CN1072643A - Foldable vessel - Google Patents

Abstract

A kind of semi rigid receptacle (1) as shown in Figure 1, it has one and forms and constitute the folded part (7) of truncated cone shape by a plurality of rhombus inserts (112).Described dummy slider (112) is all curved on direction in length and breadth with respect to truncated cone shape substrate (111), lateral extent is arranged when expanding so that folded part 7 can fold and can stop the expansion of folded state under longitudinal folding power effect from container internal pressure in the dummy slider opposing like this.This paper has also set forth dummy slider (112) shape of other various shapes.

Description

Foldable vessel

The present invention relates to a kind of container, particularly the semi-rigid Foldable vessel.The present invention be more particularly directed to store the container of aerated liquid or similar liquids, but be not limited solely to store aerated liquid.

" semi-rigid " container is meant the container made from for example that class material of polyethylene terephthalate, it can be out of shape unlike " flexibility " container or the flexibility that has to a certain degree with the content of being adorned changes shape, but it is different from " rigidity " container again." semi-rigid " speech is all used in this sense at specification sheets (comprising claims).

Aerated liquid, for example fizz and class quasi-fluid all are stored in airtight container or the similar containers under pressure, this is in order to make liquid remain on inflated condition, or is in order to reduce the escaped quantity of gas (no matter being carbon dioxide or other gas) from liquid at least.

In case open container, gas will be overflowed from liquid.Reseal container the process of discharging gas is slowed to a certain degree, yet after resealing, the space of the vessel head of can supplied gas overflowing becomes big.

As you know, if when the volume of the beverage in the container or other liquid reduces, its head space can be reduced simultaneously the time, just can reduce escaped quantity or loss amount in the gas from liquid.For this purpose, some Foldable vessels just come out one after another.Wherein some collapsible container is a ripple type, but these containers exist some shortcomings.

At first, these containers can not be used as pressure container, so they can not be used in the preceding soft drink that stores of sale.If this container is filled soft drink, cover bottle cap after, will force the container overinflation from the pressure of liquid internal.Container overinflation and form " bulging " state produces a bigger head space, and this just causes the loss of carbonification.Even slight wobble, this situation also can take place.Can not look to this container can after soft drink leaves bottling department, stand to transport with handling process in the operating mode of sternness.

Secondly, the expansion of the container of this ripple pattern and folding ability of mind mean that container part is folding or again behind the loam cake, very easily be re-inflated and produce thereupon the loss of carbonification, this is just more to be easy to generate above-mentioned situation when a head space, particularly container need be cast or sway by any way owing to the pressure from liquid forces to form in the container.Such container can not reach the application target of expection certainly.

Though some improvement of container of some ripple patterns is arranged, but still can not overcome the problems referred to above fully.They on the make to note tolerance problem and also use also not too convenient.

U.S. Patent No. 4790361(authorizes people such as Jones) attempt after container is full of, just to overcome the problem of overinflation without folding.Yet, if unfortunately come container is kept original position, in any case the container of ripple pattern can not be accomplished this point without external clip device.Such device must connect together with container, and this just makes expense increase.Though this container can partly be resisted expansion, sway the quite high pressure that the back soft drink is produced yet can't resist.When this pressure produced, the container original form of people such as Jones invention also produced expendable destruction with regard to the scope that surpasses plastic elongation to the polymeric material of making container.In fact it also is impossible selecting for use present various polyethylene terephthalates (PET) plastics to make this container.Bigger face area is arranged thereby also can increase material cost owing to this container in addition.This container also expands from folded state easily once again.

Jones waits human ridge and groove to form the ripple of container, and the plane domain that each ridge is preferably formed by quadrangle is formed and played the strand folding so that producing folding on every side along it.U.S. Patent No. 4492313(Ta Zhanai) container can not be used as pressure container.Therefore the packing before can not selling as soft drink equally.Ta Zhanai has found certain methods to overcome the expansion issues again that is produced by partially folded state really." segmentation " however drawn other problem again.This container is folding and being extruded in " jump " mode by stock in some mode, and can not match with the volume of left head space.This segmentation folding mode also can make the part stock spill.In addition, the operator sometimes after covering bottle cap (circle twist and warping folding) as accidental the container excessive compression, consequently when release next time bottle cap, the fluid in bottle can overflow.

(international monopoly agency) disclosed a kind of container that is used to adorn as toothpaste and so on cohesive material in US Patent specification 781,103, has axial ripple along its sidewall.When wall was folding, the pressure that is added in the bottom can make cohesive material such as toothpaste move in wall, and cohesive materials such as toothpaste are extruded.In US Patent 4,865,211(Hollingworth), HOII P 294186(Metal Box), US Patent 4,456,134(Ke Po) and French Patent (FRP) 2294297(Normos) and 623181(Leisse) in disclosed the collapsible container of other kind sample, they all adopt the structure of folding wall type.Yet these containers all are not suitable for the packing of soft drink.The container of US Patent 48665211 and British patent 781,103 is not suitable for especially, because they very easily are subjected to the influence of internal pressure; Because the ripple that they adopt and the structure of pleat, this internal pressure can make its overinflation when container is full of fluid.

These containers are also expanded by folded state quite easily once again, particularly make with flexible material because of them.The container of British patent 781,103 takes place to expand especially easily again.

These containers are that the mode with the pleat of round-formed annular produces folding.This sees the most clearly in US Patent 4865211 Fig. 8.

Nigeria's patent 294186 and British patent 781,103, it is collapsible or place and wait the folding of the folding and ring wall that is not folded wherein to have mentioned wall of container itself.These walls above container are with making as the flexible material of polyethylene and so on.In British patent 781,103.Described container splendid attire be not fluid, but have the material of certain viscosity.This just when being subjected to rolling over power for wall of container provides support, because material plays a part stop to move therein.This just helps flexible wall to prop up bending when being subjected to rolling over power.

Other collapsible containers have a soft bag shape portion, and it can fold to reduce head space.The collapsible container of bag cell-type simple in structure can splendid attire as the fluid of the wine of " static " and so on, but can not splendid attire such as the wine of " foaming ", be in the beverage under the pressure.If this is because there is pressure in its inside of bag simple in structure, after folding, has the trend that expands again.Therefore in order to improve the collapsible container of this pattern, people are devoted to adopt some control setups so far, for example adopt outer container, sheathcoat or similar structures being folded state to control folding and to make folding container keep it.Described external control structure can make container increase sizable expense, because it uses with bag all the time together.The example that this class container is arranged in the patent of Ke Po and Nuo Mosi.

As for bottom with polyethylene terephthalate (PET) and other class plastics, people have proposed all design plans, wherein most popular a kind of structure is at new zealand patent 227274(Continental Pet Technologies at present, Inc.) container with " petal-shaped " bottom described in.

An object of the present invention is the method that overcomes the problems referred to above to be provided or to can be everybody at least by an embodiment at least provides a kind of useful selection.

Other purpose of the present invention will become clearer by following description.

According to an aspect of the present invention, container is a semi-rigid, its sidewall has a folded part that comprises some dummy sliders, each dummy slider at least the longitudinal axis of described container transversely be circular arc, and these dummy sliders are arranged to such an extent that make these dummy sliders can combineds action produce from folded state and expand but described folded part can be folded up under the effect of a longitudinal folding power gradually described folded part is folded in the remainder of described container into to reduce the internal capacity of described container to resist described folded part.

Other aspects of the present invention will become more obvious by description below.

Now exemplify the example of property as an illustration and the present invention is described with reference to accompanying drawing, wherein:

Fig. 1 is the lateral plan of one embodiment of the invention;

Fig. 2 is the cutaway view of the partially folded state of Fig. 1 embodiment;

Fig. 3 is the cutaway view of whole folded states of Fig. 1 embodiment;

Fig. 4 be by the X-X position among Fig. 1 cut open drawing in side sectional elevation;

Fig. 5 is the concrete structure of the folded part of another embodiment of the present invention;

Fig. 6 is the lateral plan of an alternative embodiment of the invention;

Fig. 7 is the lateral plan of another embodiment of the present invention;

Fig. 8 is the front elevation of a circular arc dummy slider of the present invention;

Fig. 9 is the rear view of the circular arc dummy slider of Fig. 8;

Figure 10 is the lateral plan of the circular arc shape dummy slider among Fig. 8 and Fig. 9;

Figure 11 is the lateral plan of control part example of the present invention;

Figure 12 be cut open along Figure 11 J-J position drawing in side sectional elevation;

Figure 13 be cut open along Figure 11 I-I position drawing in side sectional elevation;

Figure 14 is the lateral plan of the container of another possible embodiment of the present invention;

Figure 15 a, b, c are another embodiment of the present invention, illustrate respectively among the figure be do not shrink, the position when part is shunk and all shunk;

Figure 16 very roughly represents an alternative embodiment of the invention;

Figure 17 and Figure 18 very roughly represent the concrete structure of the possible bottom of containers more of the present invention;

Figure 19 a and 19b represent the present invention's form of two kinds of alternative dummy sliders in addition;

Figure 20 a, b, c very roughly illustrate the upset mode of figure drum ladle;

Embodiment shown in the figure and to get in touch the following description that these accompanying drawings do only be that usefulness is described for example, rather than to the restriction of other possible embodiment of the present invention.

Can see the example of a semi rigid receptacle among Fig. 1.Container 1 is actually a long soft drink bottle, and it at one end has an opening 2 and is equipped with screw thread 3, matches and can seal easily with a threaded cap (not drawing among the figure).This routine container 1 is made by polyethylene terephthalate (PET) material; As long as but any material with semi-rigid characteristics all can be suitable for.The sidewall 4 of container 1 has one can superimposed part 5.In this example can superimposed part between dotted line A and B.

With reference to Fig. 2 and Fig. 3 as can be seen, by container 1 being applied a longitudinally and inside convergent force, specifically, in this example this power longitudinally axis 8 apply by direction 9, container 1 makes the superimposed partially folded of sidewall 4, like this, outwardly open recess size increases, and the internal capacity of container 1 will reduce.

If continue to fold, then superimposed part 5 will move to the position of acceptingpart 12 down mutually with respect to container 1, acceptpart 12 in this example and comprise cylindrical portions may 13 andbottom 14.

Now then refer again to Fig. 1 and at length consider described folding process.Folded part in this example comprises that one causes part 6 and controlpart 7.

Initiation part 6 in this example has strong and weak graded area, and it is easier to produce folding thanadjacent control part 7 and neck 11 under the effect of the power on the direction 9.Like this, under the folding power effect of one shown in the direction 9, cause part 6 and will be created in controlled to a certain extent moving and begin foregoing folding process.

In this example of the present invention, be that two endless belt adjacent, that laterally arrange by sidewall provide beginning to cause strong and weak graded area in the part 6.The demarcation line in weak district forms the gap location of adjacent endless belt.Described demarcation line is not by polishing or similar approach attenuate material thickness but begin to cause part 6 and change angles and form described.

Control part 7 in this example comprises that some are essentially long and narrowpolygon dummy slider 112, and eachdummy slider 112 is all formed a rhombus by four edges.Everydummy slider 112 is all settled and is adjoined each other along the longitudinal axis of container and makes sidewall 4 have the shape of truncated cone basically.

To illustrate below described truncated cone shape is how to help folded part 5 on the sidewall 4 with within it self retraction holding portion 12.It is to be noted before this, other also can be used as folded part 5 as cylindrical shape and polygon etc., as long as just can with dummy slider as 112.Can influence the space that folds into of folded part and realize folding difficulty or ease yet cylinder forms polygonal shape.See also Fig. 2 and Fig. 3 now, except when the periphery atrecess 10 forms limit 100 beyond the container upset when folding, the diameter of the folded part of folded part 5 also treats that than all the other folded portions is little.Like this, after folding, folded part is had and enter the space of leavingholding portion 12.

Figure 20 will further specify this point.Ifcontainer side wall 500 is not a frustum-like shape, but be cylindrical shape for as shown in the figure substantially, container will form from roof 499 and have diameter H(and see Figure 20 b when then folding by this way) this H of flange circle must see Figure 20 a) less than container diameter G(.This will produce the axial stress that hinders upset.Keep original diameter G, just do not have and to fold into the interior space of cylindrical chamber for wall 500.This will cause producing one is not to enter folding position along corresponding transmission power sidewall, on the L direction, can not overturn along makingcylindrical wall 500 wrinkle (as 501 among Figure 20 b) under the folding power effect of P direction at one.In fact have only employing to be fixed on container in the outside frame or utilize one to insert device and force the mode of its flange to push its inside to it.Owing to still want it to reduce the therefore described flange part of diameter also fold can take place.(circumference of given length must produce distortion in order to reduce diameter on its any point).

Perhaps, if turn up (seeing Figure 20 c) will produce crack or stretching, extension (as Figure 49 8 places) in order to increase its diameter, equally also to use an outside pressing device but produce this state.

If make container by power longitudinally with regard to folding without the additional external device and there is not dummy slider structure of the present invention, then container must be the material that truncated cone shape or employing have suitable elasticity and can have swell-shrink characteristic, can not keep original size when being in new location because of it.

If not as shown in Figure 1 begin to cause part 6, even adopt frustoconical part, the upset of control be arranged, particularly steeper upset and rational sidewall length, it also will be very difficult then producing folding.Sidewall can not bear the power of top load; Container only is out of shape with regard to light and collapses fully arbitrarily.Beginning to produce the needed power of flange at any point of cliff will be widely greater than wall is produced distortion and the needed power of fold.In case a part of wall begins fold, the remainder of container then will continue this wrinkle mode corresponding to the effect of the downward pressure that exists.

Consult Fig. 1 again, Fig. 2 and Fig. 3.As we can see from the figure, the operator on direction 9 the power that folded actual can only be substantially along the direction of arrow 9, the direction of application force tend to compile to some extent from.As not eliminating or reduce the skew of folding power, when particularly folding too soon, then folded part 5 will produce the superimposed and flange of fitfull.Such irregular folding is closed, and under the effect of folding power, is not to produce progressively to fold, but causes the obstruction and the fold of sidewall 4.

In folded part 5, adoptdummy slider 112 that the folding of container carried out in the predetermined mode with quite regular.

Control part 7 adoptsdummy slider 112 can help container being subjected to the tendency that folding masterpiece time spent generation rule folded and reduced sidewall generation obstruction and fold.Consulting Fig. 4 and Fig. 5 understands this situation is easier.

Thedummy slider 112 ofcontrol part 7 is arch basically shown in end section figure.Consult Fig. 4 and can see the shape of arch, Fig. 4 is the cross sectional representation along the X-X line gained of Fig. 1.

The sort ofarch dummy slider 112 as shown in Figure 4 can be strengthened the dummy slider control action when container is folding.

In the orientation shown in Fig. 4,dummy slider 112 is not folded as yet.Many dummy sliders 112 separate it and adjacent sheet bybaffle element 90 and 101, and in this example, 90 and 101 is narrower non-arcuate parts of sidewall, form frustum-like shape substrate network 111 as shown in fig. 1; Amongbaffle element 90 and 101 s' the string figure bydotted line 23 expressions.

When described container shrinks and sidewall when progressively inwardly folding,dummy slider 112 will be out of shape (stretching) and lose the shape of its arch.Can see that from accompanying drawing its shape is a string shape, promptly the shape withstring 23 is identical basically.Because the arc length of dummy slider 112 (arch ofdummy slider 112 is long) is greater than the length of string 93, container is just folding under the effect when folding, makes the periphery of concave edge produce slight expansion.Chord length between thebaffle element 90 and 101 ofdummy slider 112 every sides will be increased to maxim, equal the arch shaped length of dummy slider 112.After this when folding process was proceeded,dummy slider 112 parts that have been folded will be returned to stretched and folds the preceding basic arcuate in shape that will be had.

The expansion of neighboring can be as can be seen from Figure 5, and its expression folding 26 is when sidewall continues downwards, and the recess neighboring that is formed by the wall 4 at 100 places, limit is how along with outside of containers (is represented) ectotropic bystraight line 24 from the normal position.

Making the neighboring produce slight expansion just makes the truncated cone part change places to in-flanges.Power is radially to transmit the periphery that makes sidewall to increase, rather than transmits downwards and produce the fold of sidewall along sidewall.This circumferential expansion of sidewall just makes the truncated cone shape sidewall sections and be located in the not space of folded part to in-flanges.Owing to have this open ended characteristics that frustoconical part had of thisdummy slider 112, as shown in Figure 5, when it when sidewall moves down, the resistance of the waveform that theperiphery 100 ofrecess 10 is produced just greatly reduces.

Moreover because the sidewall 4 of container is divided into the dummy slider that adjoins mutually 112 of the present invention, sidewall 4 also just is divided into and is folded into all parts with predetermined chord length.Therefore folding periphery forms a polygon, and it is the (see figure 4) that the string that forms when folding is combined into.The big or small formed polygon that reaches the arch that wherein comprises according to the dummy slider number that is adopted can have different numbers of sides.Therefore the periphery of folded part (among Fig. 2 100) can not be circular as above-mentioned prior art just.This polygonized structure helps to be folded part, and that draws together folded towardly, and produces the blockade effect; When folded part cross the string limit when being folded into other string limit the formation once more owing to the arch dummy slider be further strengthened.Even this blockade effect can prevent that also described folded part was returned to originally not folding position again under the situation that quite high internal pressure is arranged.Each corner of polygonized structure is quite approaching with each interior angle of folded wall portion not.Under the situation of using arch dummy slider 112, the chord length when folding is (see figure 4) variation between the arch shaped length of chord length that then gets between the arc both sides and dummy slider 112 before folding.

Because sidewall sections its chord length when being folded is controlled, the obstruction of generation sidewall and the tendency of fold greatly reduce when therefore folding.Becausedummy slider 112 is equablyfolding position 100 to be applied application force when container moves down at it, corrected when therefore the direction of the folding power that just can apply the user has departing from that any discomfort works as.

The folding effect that arch dummy slider 112 is assisted and control is produced by control part 7 of rhombus shown in the present.Stop with 90 and 101 and between the rhombus arc of dummy slider 112, stretch and the substrate 111 of formation interconnection that it resists the needed intensity that expands when being subjected to bidirection press for control part 7 is provided at.When container 4 was used to store fizz and analogue, it is flexible that the dummy slider of the simple length that former container adopts at the control part branch can make wall of container produce, and therefore can stretch when the pressure that is subjected to from stock.Thereby will make container set up head room forfeiture carbonification like this.When screwing on container cover and after inside produced pressure, the baffle element 90,101 in the rhombus dummy slider was in the both direction tensioning.Baffle element 90,101 is on the bottom or substrate 111 of a frustum-like shape.It is to be noted, shape, size and/or the degree of depth of Internet between the described dummy slider or substrate 111 be can with container should have characteristics requirement change.Folding power like this will produce motion at the both direction on the rhombus dummy slider 112.Because the power on all directions equates, so rhombus can not change.Because each dummy slider 112 has fixing size, so control part 7 just can not expand.

Yet, there is not power on the both direction in case remove container.Just after container cover is removed the user just selectively with the direction 9 of Fig. 1 exert pressure (make downwards container shrink).Because power only is by a directive effect, the rhombus ofdummy slider 112 just can be forced to lax in vertical direction, by providing otherwise be that unnecessary material can allowdummy slider 112 to begin influence periphery, thereby can obtain the circumferential expansion of foldingpart 100, control contraction (folding) in above-mentioned mode.

112 pairs of performances as the collapsible container 1 that holds the liquid with pressure of described dummy slider also play other effect.It can prevent that the part of turnover of control part is forced to return to the initial position again.If container 4 is applied application force it is expanded from contraction state, then the rhombus cambered surface that is folded ofdummy slider 112 part will expand again, and congested.For example container was once cast, and this just may be that the increase of container inner pressure causes.Describedly can not outwards be turned back by turnover part, but the cambered surface that has been folded remains on original position.Like this, even container is in the part contraction state, the integraty of the container that still can keep-up pressure.

In fact the quantity that is used for the polygonal limit of folded part can be different.Though the grid unlike rhombus of various mixing shapes has any obvious advantage, still can be adopted.Yet, can increase or reduce polygonal limit number according to different arch camber modes.Only otherwise deviate from scope of the present invention and also can adopt other geometric configuration.

Being used for the rising of dummy slider for amount, according to forming required controlling quantity, also be transformable for string, influence folds and string is formed very easily.Though in arch camber horizontal or ring Zhou Fangxiang is required substantially, and in most of the cases also arch camber longitudinally.

With reference to Figure 19 a, form by a plurality oftriangle dummy sliders 601 according to the foldedpart 600 of the container of a possible embodiment, the central authorities of arch dummy slider are high-order bit.In Figure 19 b, thedummy slider 603 of the foldedpart 602 of another embodiment is circular, and their central authorities also are peak portions.

Referring now to Fig. 1, Fig. 2 and Fig. 3, can see: theend 14, form a hole 28.Describedhole 28 is that relatively adjacent with folded part 5 neck 11 forms, and make container 1 basically fully contraction and when approximately being in upperlimit in thefolding part 100 of sidewall 4hole 28 centered on by neck 11 basically.

Like this can be as can be seen from Figure 3, the periphery of neck 11 forms a zone in this example, and this zone equals or at least more preferably greater than zone that theperiphery 30 byhole 28 is limited.In addition, shown infolding position periphery 29 parts along circumferentially outwards being provided with respect toperiphery 30, so when the inclination of container, can impel the fluid that is contained in thehole 28 to flow to neck 11 and, and can not flow in the folding part of sidewall 4 towards opening 2 diffluences.

Now see Fig. 6.This is the another kind of arrangement of folded part.In Fig. 6, foldedpart 15 comprises beginning position 16 and control part 17.Control part 17 in the present embodiment comprises somehexagon dummy sliders 22.

Beginning part 16 also has some hexagon dummy sliders 22.If required, thedummy slider 22 of forming beginning part 16 can be smaller, and its quantity equal to formcontrol part 17 dummy slider quantity and relatively the dummy slider ofcontrol part 17 setover.

When being used for the gas filed beverage of non-carbonic acid and will satisfying heat especially and fill the beverage requirement, need to adopt to produce the organization plan that suitably shrinks after being full of container.

Utilize to change and should be 111 mutually among Fig. 1 as 599(among the figure) shown in the shape of dummy slider binding separation net, just may eliminate the ability (just can not need when non-carbonic acid fizz will be transformed to contractility for example being used for) that control part bears pressure.An example that how to reach this purpose is to removehorizontal linking portion 598 and in vertical mode each hexagon binding is formed an arch together from separation net.As not exceeding scope of the present invention, then also can adopt many versions, as seeing from above-mentioned, the entire infrastructure form can fold by polygon.In any other embodiment of the present invention described herein, all can adopt this remove orconversion dummy slider 22 between laterally or the mode of other linking portion.

Be understood that in other embodiments of the invention, can on folded part, be provided for beginning and controlling folding suitable structure setting.For example, of the present invention at least one have among other embodiment of dummy slider, single dummy slider can extend through control part and beginning part, and connects the whole folded part of container basically.The object lesson of the embodiment of this pattern as shown in Figure 7.

Know clearly and see that Fig. 7,container 200 can be considered foldedpart 202 and the holdingportion 203 that comprises that aneck 201, curve G and H are limited.

The zone that closely is adjacent to the crossing place ofneck 201 and foldedpart 202 is provided withrecess 204, to help to usecontainer 200.

Foldedpart 202 haspart 205 and controlpart 206 at thebeginning.Holding portion 203 comprisestrunk portion 207 andbottom 208.

As can be seen, foldedpart 202 has severalrhombus dummy sliders 209, described dummy slider is plowed along laterally being at least, the longitudinal centerline of each dummy slider and the longitudinal axis of container be parallel alignment and be adjacent to each other, so just form the foldedpart 202 of frustum-like shape basically.

In this example of the present invention, thedummy slider 199 in describedneck 201 and holdingportion 203 has different effects.Though thesedummy sliders 199 can not help to fold, strengthenneck 201 and holdingportion 203, and helped above-mentioned two parts, be subjected under the axially folding power effect opposing fold or the distortion that not so can produce.With respect to thedummy slider 209 of arch,neck 201 and holdingportion 203 radians are very little.

Other change form of the present invention can adopt little arch dummy slider around recess 204.Any creep of plastics that these dummy sliders can help the recess opposing to produce at material internal when being subjected to very high pressure, this is because two shaft alignments of work in-process cause the strong cause of the intensity of this recess area not as all the other sidewalls of container.Also can adopt other method, not deviate from scope of the present invention, for example can keep circle in the strong outside thatrecess 204 placed around one usefulness suitable material is made to help to strengthenrecess 204.

Further purpose of the present invention provides the bottom of a kind of improvement that is used for drinking container.

Because adopt the diaxon locate mode when making bottle, the top of bottle and the polymer molecule of bottom are less, so these zones will do thicklyer, but the required material minimum (owing to their bearing capacity preferably) in the bottom of usual circle.The bottle that has this rounded bottom can not be upright, thereby just need a kind of cup (base " cup ") at the bottom of the flat bottomed that have.This can adopt pet material (PET) or highdensity polypropylene material more commonly used to produce by injection moulding.

Particularly many imaginations about bottom construction have been proposed in the U.S., this structure can not need a single cup and continent drinking container Co., Ltd has proposed a kind of end through 4 or 5 extruding (deep-draw) moulding, and can stand several pin on it of bottle are wherein arranged.As aforementioned, this structure is commonly referred to " petal " end, and its shortcoming is to need with more material, and, blowing pressure that blow moulding machine is had relatively high expectations and mold cramping pressure.

Another shortcoming is that the zone of many different materials thickness distributes round the bottom, because these thickness differences will produce quite complicated distribution of stress mode.

The another one shortcoming is that this thicker middle section that does not stretch becomes the main place that will rupture under pressure, and the zone of bottom break takes place.This be because and, should become strong pressure " to tear " surface as herein described in the zone just, and with this surface to extrapolation.

The another shortcoming of this bottom structure is that container can not be stablized and stands upright on the grid-like surface that is most commonly in the fridge equipment.Make all this containers of inconvenience use of shop-assistant and client like this.

A purpose of the embodiments of the invention is exactly will overcome several in above-mentioned these problems or a kind of suitable selection scheme is provided at least.

Consult Fig. 7 again, the base 208 that exemplifies is to makehole 211 shapes (this is substantially similar to the shape of describing already in Fig. 1, Fig. 2 and Fig. 3), and it helps the residue beverage gathering of container and is sent to opening 210.For helping theend 208 to bear the internal pressure of representative type fizz, container uses polyethylene terephthalate (PET) or similar material to make dark cave (Punt) 211 especially, and described " Punt " is that the bottle bottom is spilt the void shape of bottle bottom especially as champagne for convenience of description.

The improvement at theend 208 that exemplifies here compared with the example of former recommendation is one for the fat type annulus that supports bottle usefulness, rather than pin (at the bottom of petal-shaped).This contact ring is in that container is placed also can be more stable on the imperfect surface that have usually such as fridge equipment, as grid.

With reference to Fig. 8 to Figure 13, several examples of existing explanation in more detail rhombus dummy slider (209) as shown in Figure 7.

Can see: dummy slider 301,302,303 can form one to the gradually thincombination dummy slider 300 of an end.Shown in the partial view and drawing in side sectional elevation of Fig. 9 and Figure 10,dummy slider 301 to 303 vertically all overarches horizontal reaching, therefore can the foregoing folding process of fine control.Can see that in Figure 11 to 13 therhombus sheet 305 of control part 304 is that also forming of dome-shaped produces folding required truncated cone.

Referring now to Figure 14, total represents another embodiment of the present invention with arrow 478.The rhombus dummy slider that shows previous embodiment among the figure now replaces with severalhexagon dummy sliders 475, forms folded part 472.Have several concentric flexible cords on thegraphic beginning part 476, be accompanied by each angle that changes trend neck 477.The internal diameter at theend 474 is equal to or less than the internal diameter at the edge of neck 477.Graphic all hexagon dummy sliders are that the longitudinal axis that is parallel tocontainer 478 is arranged.Everydummy slider 475 face that overarches at least in the horizontal makes container produce axially foldingly being subjected to the folding masterpiece time spent, but can resist because the circumferential expansion that internal pressure produces.

Existing 15a with the aid of pictures, 15b, 15c.Total in the drawings represents another embodiment with arrow 492.See that from figure a downward frustum-like shape folded part 488 is arranged, it is made up of the network of all rhombus dummy sliders 420.And control part 488 is upwards folded into, and like this, is that container can more fully be turned when folding.Because normally " upright mode " therefore may not retain air in the wall that is folded.The network opposing swelling force of all arc dummy sliders 420 also is held in place folded part 488.Certainly, the size of these dummy sliders 420 can be different.On some containers it the dummy slider broad of comparable other container a little, even on single container also desirable different size.Described network 488 no longer is under the pressure of beverage after taking off bottle cap.This power attempt usually is mobile to all producing along the vertical and level of each dummy slider 420 of network 488.When covering bottle cap, the power on each direction equates, so rhombus dummy slider network 488 can not move.Yet, on all directions, there is not power in case remove bottle cap.The user just can choose a direction (as shown in Figure 15 (b), downwards the direction of Foldable container) wantonly and exerts pressure after bottle cap is removed.Owing to only apply power in a direction, the rhombus dummy slider 420 of network just is forced to vertically lax, and makes arch dummy slider 420 owing to dedicate to otherwise be unnecessary material, and beginning is because too much material influence periphery 487.Move when crossing the end 490 when folding periphery like this, it is expanded, so can above-cited mode control folding of container.

According to this and other embodiment, alternate manner of the present invention also can adopt more than one folding control part.

See also Figure 16, the container 800 of present embodiment has a folded part 802 that has an arc dummy slider 800 of rhombus, forms upwards gradually thin truncated cone, rather than the downward gradually thin truncated cone shown in Figure 15 as the front.

Return the formation of the bottom of container of the present invention now, another improvement of bottom is distributing more uniformly of whole base material.In the bottom shown in Figure 17 483 inwards thesurface 480 of indentation byaround center mast 481 rotations that form by the material that does not stretch around thehole 479, relatively and recessed inwards after form.Because non-elastic material is placed such shape, therefore it self just can also can prevent fracture by bearing pressure effectively.Not only it self can bearing pressure, and outside can not pushing container bottom to down; And under pressure, almost can not make container bottom downwards, the sort of shortcoming of existence usually when outwards protruding dome-shaped inside face is for example adopted simultaneously in outstanding bottom just as the champagne formula made from this thin material.

In other change form of the present invention, described bottom can adopt the arc dummy slider to be used for resisting the folding application force of the example of the present invention among above-mentioned Figure 17.This part has added to have improved after the arc dummy slider bears stress level.Can help material folding in one direction just because of the arc dummy slider, if therefore dummy slider is oppositely arranged, dummy slider just can stop any folding trend.As near these dummy sliders of the employing center column in Figure 17 481, to pressing down, Zhe phenomenon just obviously reduces outwardly under the pressure lower bottom part.

Figure 18 represents the bottom 483 of another example, and it has adoptedarc dummy slider 486 to improve the maximum force value of bearing around bottom hollow cylinder 485.Certainly also can adopt other dummy slider arrangement within the scope of the invention.

Another kind of form of the present invention can also adopt to turn up to fold and replace the folded process of interior turnover.

Another container of the present invention also can one has the folded part of start-up portion that turns up and the control part that turns up.The rhombus of arcuation in these embodiments or the dummy slider of other shape can be to protrude into inwardly, rather than protrude outwardly.

Can see the present invention, adopting to provide when multi-form different containers to have a kind of container can have different piece adapting to different loads, and the contraction of container is to obtain by folding of interlude, rather than inwardly pushes from an end and to realize.

As can be seen from the foregoing description, the invention provides a kind of improved container, wherein the sidewall of container progressively folding can controlledly carry out and in preferred embodiment, the bottom is also designed to such an extent that can bear bigger pressure and can be provided advantages of higher stability for container.

Several in the description in front is that the concrete parts of mentioning have known equivalent unit, and this equivalence part also will be in conjunction with using in the present invention, but just do not need to have been set forth one by one at this.

Though above the present invention is set forth with reference to several possible embodiment of the present invention with way of example, but should be appreciated that, under the situation of the scope that does not break away from the claims to be set forth and the spirit of design, those skilled in the art person might make many variations and improved fully.

Claims (14)

1, a kind of semi-rigid container, its sidewall has a folded part that comprises some dummy sliders, each dummy slider transversely is an arc with respect to the longitudinal axis of described container at least, and these dummy sliders are arranged to such an extent that described dummy slider can one be worked resist the expansion of described folded part from folded state, but it is folding gradually described folded part is folded in the remainder of described container that described folded part is produced under the effect of a longitudinal folding power, reduces the internal capacity of described container simultaneously.

2, a kind of semi rigid receptacle as claimed in claim 1, it is characterized in that, described folded part has truncated cone basically, and described dummy slider also is circular arc on the y direction of container, can resist the expansion of the described folded part that is caused by container internal pressure.

3, a kind of semi rigid receptacle as claimed in claim 1 is characterized in that, described each inserts is to have polygonal shape and basically along the direction parallel with the longitudinal axis of the container arrangement of aliging.

4, a kind of semi rigid receptacle as claimed in claim 3 is characterized in that, described each dummy slider all is a rhombus and basically along the arrangement of aliging with the direction of the diamond major axis line of the longitudinal axis almost parallel of container.

5, a kind of semi rigid receptacle as claimed in claim 1 is characterized in that the neck of described folded part and described container and bottom all are to leave certain distance.

6, semi rigid receptacle as claimed in claim 2 is characterized in that, described truncated cone shape is that the neck towards container inwardly attenuates gradually and makes container under described folding power effect, and described neck can move towards the bottom of container.

7, a kind of semi rigid receptacle as claimed in claim 5 is characterized in that, the internal diameter of described neck is equal to or greater than the internal diameter of described bottom substantially, and like this, when folded state, the residual stream physical efficiency of bottom flows into described neck.

8, a kind of semi rigid receptacle as claimed in claim 2 is characterized in that, described truncated cone shape inwardly attenuates gradually towards the bottom of described container, and when container was folding, described bottom can move to towards the neck of container in the described folded part like this.

9, a kind of semi rigid receptacle as claimed in claim 1, it is characterized in that described folded part comprises causes part at the beginning, it have one or several help the zone that folds.

10, a kind of semi rigid receptacle as claimed in claim 7 is characterized in that, has described dummy slider in the described beginning part.

11, a kind of semi rigid receptacle as claimed in claim 4 is characterized in that, described rhombus is made up of a pair of triangle dummy slider that puts together.

12, a kind of semi rigid receptacle as claimed in claim 7 is characterized in that, each dummy slider is rounded basically.

13, a kind of semi rigid receptacle as claimed in claim 1, it comprises that one has the part of central deep space part and the circle around it with thinking that container provides a stable area supported.

14, a kind of semi rigid receptacle as claimed in claim 10 is characterized in that, described deep space partly is included in a plurality of circular arc dummy sliders around it, and is folding to produce under the effect that stops the internal pressure that described base material produces in container.

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