CN113545920B - Folding process of pull-up pants - Google Patents

Abstract

The invention relates to the field of disposable sanitary products, in particular to a folding process of pull-up pants, which comprises the following steps: firstly, manufacturing a pull-up diaper base material, manufacturing an absorption core body, compounding an elastic band or an elastic waistline on the base material, and compounding the absorption core body on the base material to form a continuous pull-up diaper body; secondly, folding to form a front piece and a rear piece of the pull-up diaper body, and supporting by using a supporting device, wherein the front piece and the rear piece form an interval to form an arc-shaped bending state; thirdly, carrying out primary rolling and secondary rolling, and arranging a folding forming device between the primary rolling and the secondary rolling to roll the outer side surfaces of the front sheet and the rear sheet to form a crease; and fourthly, welding and cutting the pull-up diaper body to form the pull-up diaper. The folding mode that the inner side face of the pull-up diaper is not rolled is provided, and the technical problem that the pull-up diaper is not suitable for being folded by the inner side face of the pull-up diaper rolled is solved.

Description

Folding process of pull-up pants

Technical Field

The invention relates to the field of disposable sanitary products, in particular to a folding process of pull-up pants.

Background

At present, in the production process of the pull-up pants, a folding process is often needed, which is a necessary process before the welding of the waist of the pull-up pants, such as the Chinese patent application number: CN201910633868.8 discloses a manufacturing process of pull-up pants, which comprises the following steps: a first step of making an absorbent core; secondly, compounding the first path of non-woven fabric and the liquid-tight film to form a bottom layer material, and bonding waistline rubber bands on the bottom layer material; thirdly, compounding the absorption core with a bottom layer material; fourthly, bonding the second path of non-woven fabric with a three-dimensional enclosure, an enclosure rubber band and a plane rubber band to form a surface layer material, and compounding the surface layer material on a complex of the absorption core and the bottom layer material; fifthly, longitudinally folding to form a front piece and a back piece of the pull-up diaper; sixthly, opening the front piece and the rear piece, enlarging the distance between the front piece and the rear piece of the folded semi-finished pull-up pants, and simultaneously carrying out rolling conveying on the front piece and the rear piece; and seventhly, welding and cutting the front piece and the rear piece of the pull-up diaper to form the pull-up diaper. It has solved the technical problem that current pull-up diaper has pincher trees situation when the finished product.

In the existing folding process of the pull-up pants, the crease of the front piece and the back piece of the pull-up pants is mostly pressed, and the crease of the pull-up pants can be formed by the method, and the crease condition can also be reduced.

However, since the types of the existing absorbent cores are many, there are many structures provided on the surface of the absorbent core, and these structures are not suitable for the rolling operation, and the rolling operation on the inner surface may cause adverse effects, such as damage to a specific structure, for example, abrasion of the inner side of the pull-up pants, and the like.

Disclosure of Invention

Therefore, in view of the above problems, the present invention provides a folding process for pull-up pants, which provides a folding method without rolling the inner side of the pull-up pants, and solves some technical problems of the pull-up pants not suitable for rolling the inner side.

In order to achieve the purpose, the invention adopts the following technical scheme: a folding process of pull-up pants comprises the following steps:

firstly, manufacturing a pull-up diaper base material, manufacturing an absorption core body, compounding an elastic band or an elastic waistline on the base material, and compounding the absorption core body on the base material to form a continuous pull-up diaper body;

secondly, folding the middle part of the pull-up diaper body along the length direction to form a front piece and a rear piece of the pull-up diaper body, and supporting the folded pull-up diaper body by using a supporting device during folding to form an interval between the front piece and the rear piece during folding and form an arc-shaped bending state between the front piece and the rear piece;

thirdly, performing primary rolling and secondary rolling on the folded pull-up diaper body, wherein a folding forming device for realizing stable crease is arranged between the primary rolling and the secondary rolling, so that the outer side surfaces of the front piece and the rear piece are rolled, and the crease is formed between the front piece and the rear piece;

and fourthly, welding and cutting the pull-up diaper body to form the pull-up diaper.

Further, in the third step, the purpose of one rolling is to clamp the folded pull-up diaper.

Further, the folding forming device comprises a separating mechanism and a roller pressing mechanism, wherein the separating mechanism comprises a plurality of separating rollers which are arranged at intervals and used for realizing the non-contact of the front piece and the rear piece, and a plurality of pressing roller groups used for realizing the stability of the crease marks, the separating rollers comprise separating roller bodies and arc-shaped end portions arranged at the front ends of the separating roller bodies, the separating rollers can rotate relative to the pull-up trousers body, the pressing roller groups comprise pressing roller bodies arranged up and down and rolling portions arranged at the front ends of the pressing roller bodies, the pressing portions are formed in a shrinkage state by the front ends of the pressing roller bodies, each pressing roller group is located between two adjacent separating rollers on the horizontal plane, and the pressing portions can rotate relative to the pull-up trousers body.

Furthermore, a first low-friction-coefficient material layer is arranged on the circumference outer side of the separation roller and/or the rolling part.

Further, the roller pressing part is detachably arranged at the front end of the roller body.

Further, a gap is formed between the free end of the rolling part and the free end of the arc-shaped end part in the vertical direction, and the size of the gap is 10-50 mm.

Furthermore, the roller pressing part is rotatable relative to the roller bodies, each roller body is driven by the roller driving device to synchronously rotate, the arc-shaped end part is rotatable relative to the separation roller bodies, and each separation roller body is driven by the separation roller driving device to synchronously rotate.

Furthermore, the roller group close to one end of the supporting device is a heating roller group, and the roller group far away from one end of the supporting device is a cooling roller group.

Furthermore, strutting arrangement includes the backing roll of a plurality of intervals settings, and the tip of each backing roll supports to lean on the mark in the middle of the folding when drawing a trouser body and folding, and each backing roll is rotatable setting relatively drawing a trouser body.

Furthermore, an arc-shaped supporting end is arranged at the end part of the supporting roller, and a second low-friction-coefficient material layer is arranged on the outer surface of the supporting roller.

Furthermore, the diameter of the supporting rollers is gradually increased from two sides to the middle, and the supporting rollers are guaranteed to be in contact with the inner side face of the pull-open body.

Further, the axes of the supporting rollers are positioned on the same horizontal plane.

By adopting the technical scheme, the invention has the beneficial effects that:

1. the technical problem that the folding of the conventional pull-up pants is solved is similar, the difference lies in that the folding of the conventional pull-up pants depends on the rolling of the inner side surface to realize the forming of a crease, and the rolling of the outer side surface is adopted to realize the forming. And support the product of folding in-process earlier through strutting arrangement, the main objective still can not be because of the folding of suddenly nature in order to guarantee the special construction of absorbing the core, and constantly twist and move and lead to being destroyed at folding in-process, through supporting, can make anter and back piece among the folding process form the interval to make anter and back piece form the arc state of buckling, thereby reduce the special construction that absorbs the core and can not impaired. When the crease forming is carried out, the special structure of the absorption core body is adapted to folding, so that the absorption core body can not be changed greatly, and a better crease forming effect can be achieved. In addition, the mode of folding and rolling the outer side surface is adopted, so that the damage to the special structure of the absorption core body can be reduced to the maximum extent.

2. The primary rolling aims at clamping the folded pull-up pants, namely the rolling pressure of the pull-up pants only needs to meet the clamping conveying requirement, the rolling pressure is not required, and even the rolling pressure is reduced to the maximum extent on the basis of keeping the clamping conveying.

3. Through separating mechanism, the cooperation of roll-in mechanism forms the folding forming device, can realize that anter and back part have open part and have the position that receives the roll-in, can realize the shaping of crease like this more effectively, the roll-in portion is formed the contraction state by the compression roller roll body front end in addition, should contract into natural transition, can form the curve shape of preferred to realize better roll-in, can effectively protect the special construction who absorbs the core. The pull-up diaper body is rotatable to the relative pull-up diaper body of separation roller, and the rotatable setting of pull-up diaper body of roll splenium can effectively guarantee can not lead to the friction because of separation roller and compression roller set in pull-up diaper transportation process.

4. And the friction can be effectively reduced by arranging the first low-friction-coefficient material layer.

5. Because the thickness of the pull-up diaper of difference is different, and different absorption cores also can lead to the difference of thickness, and different rolling thickness also can be required to different special construction, can realize comparatively accurately for making the roll-in, and for the convenience in the installation of equipment, dismantlement, locate compression roller roll body front end with roll-in portion detachably, can realize the improvement of adaptability effectively.

6. A gap is formed between the free end of the rolling part and the free end of the arc-shaped end part in the vertical direction, and the size of the gap is 10-50mm, so that the stretched part and the rolled part can be naturally transited, crease forming can be well realized, and the special structure of the absorption core body can be kept to be better stable.

7. The relative compression roller roll body of roll-in portion is rotatable, and each compression roller roll body realizes synchronous rotation by compression roller drive arrangement drive, the relative separation roll body of arc tip is rotatable, and each separation roll body realizes synchronous rotation by separation roller drive arrangement drive, realizes synchronous rotation when the compression roller roll body is realized by compression roller drive arrangement drive, and the relative compression roller roll body of roll-in portion is rotatable, can effectively realize frictional reduction like this, can guarantee moreover when causing the compression roller roll body not to rotate because of hindering, the roll-in portion still can draw the trousers rotation relatively, keeps the low friction to carry. The same is true of the arcuate end portions.

8. The roller group close to one end of the supporting device is a heating roller group, and the roller group far away from one end of the supporting device is a cooling roller group, so that the crease can be effectively fixed in the process of realizing rolling.

9. The end parts of the supporting rollers abut against the folding middle mark when the pull-up diaper body is folded, and the supporting rollers are rotatably arranged relative to the pull-up diaper body, so that the supporting can be well realized.

10. Be provided with the arc on the tip of backing roll and support the end, be provided with the low coefficient of friction material layer of second on the surface of backing roll, can be so that the supporting effect is better, and can realize the reduction of effectual frictional force.

11. The diameter of backing roll is by both sides to middle crescent, and guarantees that each backing roll all contacts with the medial surface that pulls open the body, and aim at makes this flow of folding have better stable effect to the special construction that absorbs the core like this. The axes of the support rollers are located on the same horizontal plane, so that this effect is maintained.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the fold forming apparatus;

FIG. 3 is a schematic structural view of the support device;

FIG. 4 is a schematic view of the configuration of the supporting rollers in engagement with the front and rear rows;

FIG. 5 is a schematic view of the folding and forming apparatus in a state of being engaged with the front and rear rows.

Reference numerals:

1. a pull-up diaper body; 2. a front panel; 3. a rear panel; 4. folding; 5. a support device; 51. a support roller; 52. an arc-shaped support end; 6. a fold forming device; 61. a separation roller; 62. an arcuate end portion; 63. a compression roller body; 64. a roll-pressing portion; A. a gap; 7. a primary rolling mechanism; 8. and a secondary rolling mechanism.

Detailed Description

The invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 5, the present embodiment provides a folding process of pull-up pants, comprising the following steps:

firstly, manufacturing a pull-up diaper base material, manufacturing an absorption core body, compounding an elastic band or an elastic waistline on the base material, and compounding the absorption core body on the base material to form a continuous pull-updiaper body 1;

secondly, folding the middle part of the pull-updiaper body 1 along the length direction to form afront piece 2 and arear piece 3 of the pull-updiaper body 1, and supporting the folded pull-updiaper body 1 by using a supportingdevice 5 during folding to enable thefront piece 2 and therear piece 3 to form an interval in the folding process and enable thefront piece 2 and therear piece 3 to form an arc-shaped bending state;

thirdly, performing primary rolling on the folded pull-updiaper body 1 by using aprimary rolling mechanism 7, performing secondary rolling by using asecondary rolling mechanism 8, and arranging afolding forming device 6 for realizing the stability of the fold 4 between the primary rolling and the secondary rolling to roll the outer side surfaces of thefront sheet 2 and theback sheet 3 so as to form the fold 4 between thefront sheet 2 and theback sheet 3;

and fourthly, welding and cutting the pull-updiaper body 1 to form the pull-up diaper.

In the third step, the purpose of one-time rolling is mainly to realize the clamping of the folded pull-up diaper.

Thefolding forming device 6 comprises a separating mechanism and a roller pressing mechanism, wherein the separating mechanism comprises a plurality of separatingrollers 61 which are arranged at intervals and used for realizing the non-contact of thefront sheet 2 and therear sheet 3, and a plurality of pressing roller groups used for realizing the stability of the crease 4, the separatingrollers 61 comprise separating roller bodies and arc-shapedend portions 62 arranged at the front ends of the separating roller bodies, the separatingrollers 61 can rotate relative to the pull-uptrousers body 1, the pressing roller groups comprise upper and lower arrangedpressing roller bodies 63 and rollingportions 64 arranged at the front ends of thepressing roller bodies 63, thepressing portions 64 are in a contraction state formed by the front ends of thepressing roller bodies 63, each pressing roller group is located between twoadjacent separating rollers 61 on the horizontal plane, and thepressing portions 64 can rotate relative to the pull-uptrousers body 1. The separatingroller 61 and/or theroller press 64 is provided with a first low-friction material layer on the circumferential outer side. Theroller pressing portion 64 is detachably provided at the front end of theroller body 63. A gap A is formed between the free end of the rollingpart 64 and the free end of the arc-shapedend part 62 in the vertical direction, the size of the gap A is 10-50mm, and the size can be adjusted according to actual needs. Theroller pressing part 64 can rotate relative to theroller bodies 63, eachroller body 63 is driven by the roller driving device to synchronously rotate, the arc-shapedend part 62 can rotate relative to the separation roller body, and each separation roller body is driven by theseparation roller 61 driving device to synchronously rotate. The roller set close to one end of thesupport device 5 is a heating roller set, and the roller set far away from one end of thesupport device 5 is a cooling roller set.

The shape of the rolling part can be adjusted according to actual requirements, the shape is not unique, and the dismounting mode can adopt a quick joint mode, such as a saw blade mounting and mounting mode of an electric cutting machine and a grinding wheel mounting mode of a grinding machine. The number of the heating roller groups and the number of the cooling roller groups can be adjusted according to actual needs, and in the scheme, the front three roller groups can be set to be heated, and the rear three roller groups can be set to be cooled.

The supportingdevice 5 comprises a plurality of supportingrollers 51 arranged at intervals, the end part of each supportingroller 51 is abutted against the folding middle mark when the pull-updiaper body 1 is folded, and each supportingroller 51 can be rotatably arranged relative to the pull-updiaper body 1. An arc-shaped supportingend 52 is arranged on the end part of the supportingroller 51, and a second low-friction-coefficient material layer is arranged on the outer surface of the supportingroller 51. The diameter of the supportingrollers 51 is gradually increased from two sides to the middle, and each supportingroller 51 is ensured to be in contact with the inner side surface of the pull-open body. The axes of thesupport rollers 51 are located on the same horizontal plane.

The existing absorption core body can be provided with grooves, holes, medicine core pieces, other substances and the like in a special structure.

The invention has the beneficial effects that:

1. the technical problem that the folding of the conventional pull-up pants is solved is similar, the difference lies in that the folding of the conventional pull-up pants depends on the rolling of the inner side surface to realize the forming of a crease, and the rolling of the outer side surface is adopted to realize the forming. And support the product of folding in-process earlier through strutting arrangement, the main objective still can not be because of the folding of suddenly nature in order to guarantee the special construction of absorbing the core, and constantly twist and move and lead to being destroyed at folding in-process, through supporting, can make anter and back piece among the folding process form the interval to make anter and back piece form the arc state of buckling, thereby reduce the special construction that absorbs the core and can not impaired. When the crease forming is carried out, the special structure of the absorption core body is adapted to folding, so that the absorption core body can not be changed greatly, and a better crease forming effect can be achieved. In addition, the mode of folding and rolling the outer side surface is adopted, so that the damage to the special structure of the absorption core body can be reduced to the maximum extent.

2. The primary rolling aims at clamping the folded pull-up pants, namely the rolling pressure of the pull-up pants only needs to meet the clamping conveying requirement, the rolling pressure is not required, and even the rolling pressure is reduced to the maximum extent on the basis of keeping the clamping conveying.

3. Through separating mechanism, the cooperation of roll-in mechanism forms the folding forming device, can realize that anter and back part have open part and have the position that receives the roll-in, can realize the shaping of crease like this more effectively, the roll-in portion is formed the contraction state by the compression roller roll body front end in addition, should contract into natural transition, can form the curve shape of preferred to realize better roll-in, can effectively protect the special construction who absorbs the core. The pull-up diaper body is rotatable to the relative pull-up diaper body of separation roller, and the rotatable setting of pull-up diaper body of roll splenium can effectively guarantee can not lead to the friction because of separation roller and compression roller set in pull-up diaper transportation process.

4. And the friction can be effectively reduced by arranging the first low-friction-coefficient material layer.

5. Because the thickness of the pull-up diaper of difference is different, and different absorption cores also can lead to the difference of thickness, and different rolling thickness also can be required to different special construction, can realize comparatively accurately for making the roll-in, and for the convenience in the installation of equipment, dismantlement, locate compression roller roll body front end with roll-in portion detachably, can realize the improvement of adaptability effectively.

6. A gap is formed between the free end of the rolling part and the free end of the arc-shaped end part in the vertical direction, and the size of the gap is 10-50mm, so that the stretched part and the rolled part can be naturally transited, crease forming can be well realized, and the special structure of the absorption core body can be kept to be better stable.

7. The relative compression roller roll body of roll-in portion is rotatable, and each compression roller roll body realizes synchronous rotation by compression roller drive arrangement drive, the relative separation roll body of arc tip is rotatable, and each separation roll body realizes synchronous rotation by separation roller drive arrangement drive, realizes synchronous rotation when the compression roller roll body is realized by compression roller drive arrangement drive, and the relative compression roller roll body of roll-in portion is rotatable, can effectively realize frictional reduction like this, can guarantee moreover when causing the compression roller roll body not to rotate because of hindering, the roll-in portion still can draw the trousers rotation relatively, keeps the low friction to carry. The same is true of the arcuate end portions.

8. The roller group close to one end of the supporting device is a heating roller group, and the roller group far away from one end of the supporting device is a cooling roller group, so that the crease can be effectively fixed in the process of realizing rolling.

9. The end parts of the supporting rollers abut against the folding middle mark when the pull-up diaper body is folded, and the supporting rollers are rotatably arranged relative to the pull-up diaper body, so that the supporting can be well realized.

10. Be provided with the arc on the tip of backing roll and support the end, be provided with the low coefficient of friction material layer of second on the surface of backing roll, can be so that the supporting effect is better, and can realize the reduction of effectual frictional force.

11. The diameter of backing roll is by both sides to middle crescent, and guarantees that each backing roll all contacts with the medial surface that pulls open the body, and aim at makes this flow of folding have better stable effect to the special construction that absorbs the core like this. The axes of the support rollers are located on the same horizontal plane, so that this effect is maintained.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. A folding process of pull-up pants is characterized by comprising the following steps:

firstly, manufacturing a pull-up diaper base material, manufacturing an absorption core body, compounding an elastic band or an elastic waistline on the base material, and compounding the absorption core body on the base material to form a continuous pull-up diaper body (1);

secondly, folding the middle part of the pull-up diaper body (1) along the length direction to form a front piece (2) and a rear piece (3) of the pull-up diaper body (1), and supporting the folded pull-up diaper body (1) by using a supporting device (5) during folding to enable the front piece (2) and the rear piece (3) to form an interval during folding and enable the front piece (2) and the rear piece (3) to form an arc-shaped bending state;

thirdly, performing primary rolling on the pull-up diaper body (1) after folding, performing secondary rolling, arranging a folding forming device (6) used for realizing the stability of the crease (4) between the primary rolling and the secondary rolling, wherein the folding forming device realizes the rolling of the outer side surfaces of the front sheet (2) and the rear sheet (3) so as to form the crease (4) between the front sheet (2) and the rear sheet (3), the folding forming device (6) comprises a separating mechanism and a rolling mechanism, the separating mechanism comprises a plurality of separating rollers (61) which are arranged at intervals and used for realizing the non-contact of the front sheet (2) and the rear sheet (3) and a plurality of press roller groups used for realizing the stability of the crease (4), each separating roller (61) comprises a separating roller body and an arc-shaped end part (62) arranged at the front end of the separating roller body, and the separating rollers (61) can be rotatably arranged relative to the pull-up diaper body (1), the pressing roller sets comprise pressing roller bodies (63) which are arranged up and down and pressing portions (64) which are arranged at the front ends of the pressing roller bodies (63), the pressing portions (64) are in a contraction state from the front ends of the pressing roller bodies (63), each pressing roller set is positioned between two adjacent separating rollers (61) on the horizontal plane, and the pressing portions (64) are rotatably arranged relative to the pull-up diaper body (1);

and fourthly, welding and cutting the pull-up diaper body (1) to form the pull-up diaper.

2. The process of folding a pair of pull-up pants according to claim 1, wherein: the separation roller (61) and/or the roller press section (64) is provided with a first low-friction material layer on the circumferential outer side.

3. The process of folding a pair of pull-up pants according to claim 1, wherein: the roller pressing part (64) is detachably arranged at the front end of the roller body (63) of the pressing roller.

4. The process of folding a pair of pull-up pants according to claim 1, wherein: and a gap (A) is formed between the free end of the rolling part (64) and the free end of the arc-shaped end part (62) in the vertical direction, and the size of the gap (A) is 10-50 mm.

5. The process of folding a pair of pull-up pants according to claim 1, wherein: the roller pressing part (64) can rotate relative to the roller bodies (63), each roller body (63) is driven by the roller driving device to synchronously rotate, the arc-shaped end part (62) can rotate relative to the separation roller bodies, and each separation roller body is driven by the separation roller (61) driving device to synchronously rotate.

6. The process of folding a pair of pull-up pants according to claim 1, wherein: the roller group close to one end of the supporting device (5) is a heating roller group, and the roller group far away from one end of the supporting device (5) is a cooling roller group.

7. A process of folding a pull-up pant according to any one of claims 1 to 6, characterised in that: the supporting device (5) comprises a plurality of supporting rollers (51) which are arranged at intervals, the end parts of the supporting rollers (51) abut against folding middle marks when the pull-up diaper body (1) is folded, and the supporting rollers (51) can be arranged in a rotating mode relative to the pull-up diaper body (1).

8. The process of folding a pair of pull-up pants according to claim 7, wherein: an arc-shaped supporting end (52) is arranged at the end part of the supporting roller (51), and a second low-friction-coefficient material layer is arranged on the outer surface of the supporting roller (51).

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