Background technology
Bandage is used to fixing breathing mask in the appropriate location of user face, therefore, when bandage should make face shield and facial contact, reach enough sealing effectiveness and prevent gas leakage, keep again certain fastening force at face, relative displacement to occur to prevent user face shield in sleep procedure.In addition, a bandage is also answered safety and comfort, veneer softness, and functional design is reliable, and has certain stretching aperture and resilience.For meeting above-mentioned requirements, a bandage generally uses compound fabric to make.
Known ground, a bandage need to have one or more belt, when connecting breathing mask, be suitably around being worn on patient's head or above-head, make breathing mask be fixed on the specific position of patient's face.Because needs of patients is within a period of time, especially, in night sleep, wear breathing mask, therefore, a bandage can keep that long-time comfortable stably face shield to be fixed on to the position that patient's face requires extremely important.
Traditional respiratory surface capouch bandage is directly to cut off molding by the sharp cutter of required form.A bandage of making in this way exists following technical problem: Fig. 1 to show the disconnected tangent plane of this bandage fabric, can find out so not edge sealing of a bandage, and edge 61 is exposed, easily produces overlap or burr, is easy to hide dirt and causes bacteria breed; In washing dry in the sun process, middle spongy layer 403 is exposed under the condition of detergent, water, sunlight completely, adds kinetic head bandage aging; Appearance function fabric layer 312, following table contact skin tissue layer 313 is easily subject to environment and External Force Acting and peels off, and a bandage life-span is reduced.
After be improved to a bandage that utilizes the die-cut edge sealing principle of ultrasound wave to make, this is the three-dimensional bandage of a kind of edge sealing being formed by connecting by multiple parts, its structure as shown in Figure 4, comprise the main bandage 210 of ring-type of lower ending opening, connect the main bandage connecting portion 240 of main bandage open end, both sides, main bandage upper and lower part connect respectively each two of bandage 220 and lower bandage 230, the each butt hook surface fastener 40 of end of upper bandage, lower bandage, links together by welding, stitching or any suitable connected mode between upper bandage, lower bandage and main bandage.The problem of this bandage existence is: the sealing the margin of a bandage is (referring to Fig. 2 by welding protuberance 62, also with by appearance function fabric layer 312, middle spongy layer 403 contact three layers of compound fabric that skin tissue layer 313 forms with following table be example) formation, because this welding protuberance is additionally to have more at the width of a bandage of fixed width, and the right and left respectively has more the width of about 0.5mm, therefore can add the dimensional discrepancy of major part bandage, welding protuberance is coarse, this makes to wear for a long time friction user skin, produce discomfort, referring to the disconnected tangent plane of the die-cut edge sealing fabric of the ultrasound wave showing in Fig. 2, and the physical property such as drawing recovery and hardness of welding protuberance is different with fabric, after repeatedly stretching, welding protuberance easily breaks or is bending, on the other hand, the die-cut edge sealing of ultrasound wave has very large limitation to processed fabric size, can not time processing in the process of the main bandage of die-cut edge sealing, but die-cut edge sealing several times, can cause so main bandage 210 to have the phenomenon of misalignment (shown in the circle of Fig. 8 middle part), with the skin of face contact friction of user, cause to leave trace at face after uncomfortable or long-time use and print.
Utility model content
In order to overcome the defect of above-mentioned existing respiratory surface capouch bandage, what this utility model object was to provide a kind of edge seal and smooth, long service life utilizes the three-dimensional bandage of the molten edge sealing that is applicable to medical ventilator face shield of cutting of high frequency waves.
The three-dimensional bandage of high frequency waves edge sealing breathing mask that this utility model provides, comprise by main bandage, connect the main bandage connecting portion of main bandage end, correspondence is distributed in each two bandage main elements that upper bandage, lower bandage form of both sides, main bandage upper and lower part, all border seals of high frequency waves welding that pass through of described bandage main element, and edge is smooth, weldless protuberance staggered edge free.
Described main bandage is to meet the avette and lower ending opening of the solid of back of head shape in the form of a ring.
Described upper bandage, lower bandage all extend to the same side of described main bandage place plane.
Described upper bandage, lower bandage are greater than the width away from one section of described main bandage near the width of one section of described main bandage.
The end of described upper bandage, lower bandage is connected with the fixed part for regulating described breathing mask tightness.
Described fixed part is hook surface fastener.
Described main bandage, main bandage connecting portion, upper bandage all adopt by appearance function fabric layer, middle spongy layer and contact the compound fabric that skin tissue layer forms with following table with lower bandage.
In the middle of described, spongy layer is sealed in appearance function fabric layer, following table contact skin tissue layer and described edge completely.
Described main bandage and described main bandage connecting portion and described upper bandage, lower bandage, described upper bandage, lower bandage are all connected by laminating, hot melt, ultra-sonic welded, high-frequency welding or sewing with described fixed part.
The all edges of the three-dimensional bandage of above-mentioned high frequency waves edge sealing breathing mask all seal, edge flexible smooth, there is no welding protuberance (comparing the die-cut welding protuberance 62 of the ultrasound wave shown in Fig. 2), inner textile layer material is sealed in fabric two extexines and edge completely, and this edge can not cause the dimensional tolerance range of product or each parts to strengthen; The more important thing is, under external force stretching action, edge can not produce deformation and fracture; And edge washing fastness is strong.In use, this edge is approximately positioned at the middle part of compound fabric thickness direction, and it is highly approximately less than 0.5mm, can be less than 0.1mm(much smaller than the die-cut edge 61 of the machinery shown in Fig. 1 in actual production), such edge does not contact user face, reduces face stimulation and avoids producing facial impression.Each parts of the three-dimensional bandage of this edge sealing can utilize high-frequency apparatus one-step punching out, there is no misalignment phenomenon, simplify working process, and reduce leftover pieces, reduce costs, and have broad application prospects.
Detailed description of the invention
The explanation providing below relates to several embodiments with common feature and feature.The one or more features that are interpreted as an embodiment all can with one or more characteristics combination of other embodiment.In addition, any single feature in any embodiment or the combination of feature can form other embodiment.
The three-dimensional bandage of high frequency waves edge sealing breathing mask that this utility model provides, its design principle and thinking are: high frequency waves equipment produces electromagnetic field of high frequency by electron tube self-excited oscillator, polarized and the mutual vigorous exercise friction of medium interior molecules in upper and lower interelectrode electromagnetic field of high frequency and self produce heat energy, and can be to making medium itself be tending towards melting.According to all parts of the method design 3 D stereo head bandage of three-dimensional cutting, the one or more sharp cutting die 5003 of required form is installed on the high frequency wave emitter of high frequency waves equipment, this cutting die is that high frequency waves are sent out wave electrode simultaneously and mechanical die-cut cutlery (being called for short " electrode cutting die "), under high frequency waves effect, make to be laid in " fabric " as medium on bottom crown 5004 in the progressively melting of electrode cutting die cutting edge place, in melting, the fabric in cutting edge region is upper, lower top layer fabric is welded to sealing, and then electrode cutting die is exerted pressure, punch out with a bandage main body of electrode cutting die congruent figures or form its each parts, this technical process is embodied by Fig. 6-7, form a three-dimensional solid bandage by the each parts of splicing afterwards.
This utility model is a solid bandage 2 that utilizes high frequency waves principle edge sealing, concrete structure is referring to Fig. 4, its thickness distribution is even, comprise the main bandage 210 of ring-type of the lower ending opening avette by solid, connect the main bandage connecting portion 240 of main bandage end, be distributed in two of both sides, main bandage top upper bandages 220 and be distributed in the bandage main element that two lower bandages 230 of both sides, main bandage bottom form, also comprise and be connected in bandage in addition, four hook surface fasteners 40 of lower bandage end, the edge 60(that all border seals of bandage main element form sealing is referring to Fig. 3).Wherein, main bandage 210 ends and main bandage connecting portion 240 are connected to form the avette ring-type of solid that meets head basic configuration, laminating back of head occipital bone; The strip that main bandage connecting portion 240 is elongated or edge is arc; Two upper bandages 220 lay respectively at the left and right sides, the avette top of main bandage 210; Two lower bandages 230 lay respectively at the left and right sides, the avette bottom of main bandage 210, and upper bandage 220 and lower bandage 230 all extend to the same side of main bandage 210 place planes, jointly form 3 D stereo head bandage with main bandage and main bandage connecting portion thereof.Upper bandage 220 and lower bandage 230 are regular geometric shapes, are preferably the belt of class rectangle, and are greater than the width near one section of hook surface fastener near one section of width of main bandage 210, to alleviate bandage to user head and facial pressure; Four hook surface fasteners 40 lay respectively at the end of bandage, lower bandage.The three-dimensional bandage of edge sealing shown in Fig. 4 is interpreted as prominent example, and therefore this utility model is understood to include a solid bandage of all edge sealing similar to specific embodiments.
Main bandage 210, main bandage connecting portion 240, upper bandage 220 and lower bandage 230 can be made up of thickness, the identical or different compound fabric of material.This compound fabric can be more than three layers or three layers composite.Preferably, this compound fabric has three-decker: be followed successively by following table contact skin tissue layer 313, middle spongy layer 403 and appearance function fabric layer 312, as shown in Figure 3.Following table contact skin tissue layer can be any to the soft comfortable fabric of skin, preferably chemical & blended fabric, following table contact skin tissue layer 313 be positioned at a bandage in surface, can directly contact with head with user face, should there is suitable tensile elasticity and breathability, comfortable with contact skin softness, and frictional force between skin is little.Appearance function fabric layer is positioned at the outer surface of a bandage,, with user facial contact, does not have suitable tensile elasticity and breathability; Appearance function fabric layer comprises outward surface 314, and outward surface 314 is preferably containing the hair side functional fabric of fibrae circulares, can provide regular fibrous annular structures for time engage with the hook face of the hook surface fastener of turning back.Hook surface fastener can be fixed on following table contact skin tissue layer or appearance function fabric layer surface, is preferably fixed on following table contact skin fabric layer surface, and the bonding plane of hook surface fastener is towards the outer surface of a bandage.Middle spongy layer 403, between following table contact skin tissue layer 313 and appearance function fabric layer 312, can be the sponge of any suitable density and hardness, preferably, is polyurethane sponge; Middle spongy layer 403 is soft and has suitable tensile elasticity, cushion cushioning effect is provided; There is breathability, help moisture/perspiration by during capillary tube is from cutaneous metastatic to external environment; Sponge density and thickness distribution are even; Sponge can be porous.Preferably, sponge is high-density sponge.
This compound fabric be by above raw material by flame fit, viscose glue laminating or the combination of any suitable laminating type obtain.This compound fabric melts and cuts in edge sealing process at high frequency waves, the melted edge of following table contact skin tissue layer 313, middle spongy layer 403 and appearance function fabric layer 312 engages the edge 60 that has formed sealing, middle spongy layer 403 is completely sealed in the edge of following table contact skin tissue layer, appearance function fabric layer and sealing, referring to Fig. 3.
The processing technology of the three-dimensional bandage of this utility model: main bandage, main bandage connecting portion, upper bandage and lower bandage are the sharp cutting dies by required form is installed on the high frequency wave emitter at high frequency waves equipment, this cutting die is that high frequency waves are sent out wave electrode simultaneously and mechanical die-cut cutlery, utilize at high frequency waves and send out the compound fabric making to be laid under ripple effect on negative plate as medium in the progressively melting of cutting die cutting edge place, in melting, the fabric in cutting edge region is upper, lower top layer fabric is welded to sealing, and then electrode cutting die is exerted pressure, punch out with a bandage main body of electrode cutting die congruent figures or form its each parts.
Alternatively, main bandage end can be connected by modes such as laminating, hot melt, ultra-sonic welded, high-frequency welding, sewings with main bandage connecting portion, forms the avette ring-type of solid that meets the design of head basic configuration, the user back of head occipital bone of fitting when use; Alternatively, upper bandage can be connected with main bandage by modes such as laminating, hot melt, ultra-sonic welded, high-frequency welding, sewings with lower bandage; Alternatively, hook surface fastener is connected with upper bandage, lower bandage end by modes such as laminating, hot melt, ultra-sonic welded, sewings; Preferably, hook surface fastener is connected with upper bandage, lower bandage end by ultra-sonic welded mode; Can obtain the three-dimensional bandage of complete edge sealing.
These solid all edges of bandage main element that utilize high frequency waves principle edge sealing are all sealing (compared with the edge 61 of Fig. 1) and soft smooth, here smooth refers to that edge does not have welding protuberance (comparing the welding protuberance 62 of ultrasound wave edge sealing in Fig. 2) and staggered edge free, upper and lower top layer connects by level and smooth continuous arc shaped edge, and middle spongy layer is sealed in wherein completely, therefore such edge can not cause the dimensional discrepancy of product or each parts.The more important thing is, under external force stretching action, edge can not produce deformation and fracture; And washing fastness is strong.In use, this edge is approximately positioned at the middle part of compound fabric thickness direction, it is highly approximately less than 0.5mm, in actual production, can be less than 0.1mm(much smaller than the die-cut edge 61 of the machinery shown in Fig. 1), do not contact user face, each parts are all that one-step punching edge sealing completes, and there is no misalignment, reduce face stimulation and avoid producing facial impression.And compared with utilizing ultrasonic wave principle edge sealing head bandage, the welding protuberance 62(producing while not existing fabric welding to solidify as shown in Figure 2), thereby there is not the dimensional discrepancy of product, owing to can longer belt body once being completed to the molten edge sealing of cutting with high frequency waves, thereby do not exist yet in the middle of misalignment, thereby smooth when this utility model edge sealing edge, avoid causing discomfort or leave red trace at face after long-time use with the skin of face contact friction of user printing.
The using method of the three-dimensional bandage 2 of this utility model edge sealing: upper bandage 220, lower bandage 230 ends are through breathing mask 1 locating hole, paste in corresponding upper bandage, lower bandage appearance function fabric layer outward surface by hook surface fastener 40, be regular geometric shapes face shield is fixed on to user face.When use, upper bandage, lower bandage are with facial contact but do not contact ear, and upper bandage is positioned at ear top, and lower bandage is positioned at ear below, the fit back of head of user of the avette ring-type of solid that main bandage 210 and main bandage connecting portion 240 form; Bandage is detachably connected on face shield, can pass through the relative position of adjustable hook surface fastener and upper bandage, lower bandage, regulate the degree of tightness relation of face shield and user face, reach and use the comfortable and gastight effect of face shield, Fig. 5 is the design sketch that user has been worn this utility model head bandage; The avette loop design that main bandage meets head dummy can prevent that user bandage in sleep procedure from sliding up and down and causing face shield and face to relatively move, thereby keeps air-tightness and the safety of face shield.
The three-dimensional bandage of edge sealing of the present utility model is easy to use, 3-D solid structure and contouring head are fitted more, wear more comfortable, the stability of a bandage and safety also significantly strengthen, thereby improve breathing mask at facial steadiness, kept air-tightness and the safety of face shield.Each parts of the three-dimensional bandage of this edge sealing can be according to necessarily regularly arranged, and fabric effective area is maximized, and recycling high-frequency apparatus one-step punching out, is simplified working process, and reduces leftover pieces, reduces costs, and has broad application prospects.
Experimental section: following experiment has provided respectively this utility model head bandage and utilized experimentation and the result of stretch-proof intensity, washing fastness and the dimensional discrepancy of a bandage of ultrasonic wave principle edge sealing.
Experiment one:
I. experiment purpose: contrast this utility model head bandage and the stretch-proof intensity at edge of a bandage of utilizing ultrasonic wave principle edge sealing;
II. sampling: use same model, batch three layers of compound fabric material, process that this utility model utilizes high frequency waves principle edge sealing with the cuboid head bandage belt body that utilizes ultrasonic wave principle edge sealing, be of a size of 300mm(long) × 10mm(is wide) × 4.5mm(is thick), product length and width size tolerance requirements is within the scope of ± 0.2mm, processing mold length and width tolerance require be ± 0.01mm, and edge is intact to be fallen into; Randomization quantity is 10, and sample is called after high frequency edge sealing headband, ultrasonic edge sealing headband respectively, serial number separately;
III. survey tool: electronic tension meter, within effective metering verification phase;
IV. test event and method: under 20 ± 1 DEG C of constant humidity 65% ± 2% conditions of constant temperature, the stretch-proof intensity at the edge of test headband.Sample is laid on horizontal checkout platform, estimate the whether smooth nothing distortion in its edge and have or not breach, then sample two ends are separately fixed on the upper lower clamp of strain gauge, on go up fixture make sample naturally stretching under without External Force Acting state length be 250mm, start strain gauge, be stretched to when product deformation ratio reaches 20% and stop stretching, keep after 10 seconds, strain gauge fixture resets, test repeats after 10 times, sample is laid on horizontal bed again, estimates whether its edge is smooth has or not distortion and have or not breach.
Test a test result as shown in table 1 below.
Table 1: the stretch-proof strength test result at edge
Experiment two:
I. experiment purpose: contrast this utility model head bandage and the washing fastness at edge of a bandage that utilizes ultrasonic wave principle edge sealing;
II. sampling: use same model, batch three layers of compound fabric material, process this utility model and utilize cuboid head bandage belt body high frequency waves principle edge sealing and ultrasonic wave principle edge sealing, be of a size of 300mm(long) × 10mm(is wide) × 4.5mm(is thick), product length and width size tolerance requirements is within the scope of ± 0.2mm, and processing mold length and width tolerance require to be 0.01mm; Randomization quantity is 10, and sample is called after high frequency edge sealing headband, ultrasonic edge sealing headband respectively, serial number separately;
III. survey tool: Whirlpool automatic washing machine, AATCC1993 standard wash agent (consumption: 66.0 ± 1g), increment of load setoff fabric (50/50 wash/cotton bleaching plain, weight: 1.8 ± 0.1kg);
IV. measure the item and method: carry out tubular test with reference to international standard AATCC135, washing machine running program arranges: soft fabric (Gentle), the washing dehydration time: 8min/4min, water level: 18 ± 1gal (middle water level), wash temperature: III41 ± 3 DEG C (105 ± 5F), drying mode: stand is dry.Above-mentioned washing/dehydrating/dry run number of repetition is 24 times.
Test two test results as shown in table 2 below.
Table 2: the washing fastness test result at edge
Experiment three:
I. experiment purpose: the dimensional discrepancy of a bandage of contrast this utility model head bandage and existing ultrasonic wave principle edge sealing;
II. sampling: use same model, batch three layers of compound fabric material, process this utility model and utilize cuboid head bandage belt body high frequency waves principle edge sealing and ultrasonic wave principle edge sealing, be of a size of 300mm(long) × 10mm(is wide) × 4.5mm(is high), product length and width size tolerance requirements is within the scope of ± 0.2mm, and processing mold length and width tolerance require be ± 0.01mm; Randomization quantity is 10, and sample is called after high frequency edge sealing headband, ultrasonic edge sealing headband respectively, serial number separately;
III. survey tool: slide gauge, ruler;
IV. measure the item and method: under 20 ± 1 DEG C of constant humidity 65% ± 2% conditions of constant temperature, use the rear product width of vernier caliper measurement processing, contrast respectively and with processing dimension standard; Survey tool is all within effective metering verification phase.
Test three test results as shown in table 3 below.
Table 3: product width dimensional discrepancy test result
Above-mentioned experimental result can find out, the edge of high frequency waves edge sealing respiratory surface capouch bandage can not cause the dimensional tolerance range of product or each parts to strengthen; The more important thing is, under external force stretching action, edge can not produce deformation and fracture; And edge washing fastness is strong.
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; do not departing under the prerequisite of this utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.