JP2016120086A - Humor-absorbing pad material and manufacturing method thereof - Google Patents

Humor-absorbing pad material and manufacturing method thereof Download PDF

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Publication number
JP2016120086A
JP2016120086A JP2014262217A JP2014262217A JP2016120086A JP 2016120086 A JP2016120086 A JP 2016120086A JP 2014262217 A JP2014262217 A JP 2014262217A JP 2014262217 A JP2014262217 A JP 2014262217A JP 2016120086 A JP2016120086 A JP 2016120086A
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Japan
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bodily fluid
fluid absorbing
absorbing pad
longitudinal direction
side
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JP2014262217A
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Japanese (ja)
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圭介 南
Keisuke Minami
圭介 南
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小林製薬株式会社
Kobayashi Pharmaceutical Co Ltd
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Priority to JP2014262217A priority Critical patent/JP2016120086A/en
Publication of JP2016120086A publication Critical patent/JP2016120086A/en
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Abstract

Disclosed is a bodily fluid-absorbing pad that is less likely to be twisted during use, and a method for producing the same. A bodily fluid absorbing padding material 1 is formed by laminating a plurality of sheets, is formed in a vertically long shape having a length in a longitudinal direction longer than a length in a width direction perpendicular to the longitudinal direction, and in a longitudinal direction. The left and right side edges 11 and 12 extending in the longitudinal direction are confined inward, and the maximum length L1 in the width direction on one side in the longitudinal direction is the width on the other side. It is longer than the maximum length L2 in the direction. [Selection] Figure 1

Description

  The present invention relates to a bodily fluid absorbing contact material for absorbing bodily fluids such as urine, menstrual blood, sweat, urine and the like, which is attached to an underwear during use, and a method for manufacturing the same.

  Conventionally, a bodily fluid absorbing pad has been used to absorb bodily fluids such as vaginal discharge, menstrual blood, sweat, and urine. The bodily fluid absorbing pad mainly includes a top sheet, a back sheet, and an absorbent sheet sandwiched between the top sheet and the back sheet. The absorbent sheet, the top sheet and the back sheet are bonded to each other by an adhesive, and the sheets are fixed to each other by crimping the outer peripheral edges of the absorbent sheet, the top sheet and the back sheet over the entire circumference. Thus, the stacked sheets are integrated.

  In addition, the bodily fluid absorbing pad is formed in a vertically long shape in accordance with the crotch part, which is the attachment site, and has a violon shape (like the violin of a violin) with the left and right side edges extending in the longitudinal direction inside. ) Is generally formed. For example, Patent Document 1 discloses a bodily fluid absorbing contact material that is bilaterally symmetric with respect to a longitudinal center line extending in the longitudinal direction and symmetric with respect to a lateral center line extending in the width direction. .

JP 2008-125851 A

  In the bodily fluid absorbing pad described in Patent Literature 1, a portion corresponding to the excretion portion of the wearer (front portion) and a portion corresponding to the buttocks (rear portion) are formed to have the same size. However, when the rear part arranged on the buttock side is formed wide in the width direction like the front part arranged on the excretory part side, when the body fluid absorbing pad is attached to the underwear and used, walking, etc. The hips tend to fluctuate greatly depending on the movement of the body, and for this reason, the body fluid absorbing pad tends to be twisted. If the twist occurs, it may cause side leakage as well as deterioration in the comfort of the bodily fluid absorbing pad. In this respect, the bodily fluid absorbing pad of Patent Document 1 leaves room for improvement. Yes.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a bodily fluid-absorbing contact material that is less likely to be twisted during use and a method for producing the same.

  The above-mentioned object of the present invention is a bodily fluid absorbing contact material formed by laminating a plurality of sheets, wherein the length in the longitudinal direction is longer than the length in the width direction orthogonal to the longitudinal direction, and It is formed in a symmetrical shape with respect to the center line extending in the longitudinal direction, the left and right side edges extending in the longitudinal direction are bounded inside, and the maximum length L1 in the width direction on one side in the longitudinal direction is the width on the other side This is achieved by a bodily fluid absorbing pad material that is longer than the maximum length L2 in the direction.

  In the bodily fluid absorbing pad having the above configuration, the difference between the maximum length L1 in the width direction on one side in the longitudinal direction and the maximum length L2 in the width direction on the other side is preferably 3 mm or more and 10 mm or less.

  Further, it is more preferable that the side edge is formed so that the constricted portion having the minimum length L3 in the width direction is located at the center in the longitudinal direction.

  More preferably, the plurality of sheets include a nonwoven fabric, and the fibers constituting the nonwoven fabric are oriented in the width direction.

  Moreover, it is more preferable that the length that is extended when the same load is applied to be pulled is smaller in the width direction than in the longitudinal direction.

  Further, it is more preferable that the portion having the maximum length L1 extends a predetermined length in the longitudinal direction.

  In addition, the above-mentioned object of the present invention is formed in a vertically long shape whose length in the longitudinal direction is longer than the length in the width direction orthogonal thereto, and is formed in a symmetrical shape with respect to the center line extending in the longitudinal direction, The manufacturing method of the bodily fluid absorbing pad material in which the left and right side edges extending in the longitudinal direction are bounded inside, and the maximum length L1 in the width direction on one side in the longitudinal direction is longer than the maximum length L2 in the width direction on the other side. The step of transporting a plurality of strip-shaped original sheets constituting the bodily fluid absorbing contact material such that the length direction is the transport direction, and the strip-shaped sheet materials are bonded to each other. And a punching step of punching out the sheet material with an outer shape of the bodily fluid absorption pad and separating the bodily fluid absorption pad from the sheet material, and In the extraction step, the longitudinal direction of the bodily fluid absorbing pad There matches the width direction of the sheet material, and said body fluid absorbing against material along the conveying direction of the sheet material is also achieved by a manufacturing method punched one after the other.

  In the method for manufacturing a bodily fluid absorbing pad having the above configuration, in the punching step, the bodily fluid absorbing pad is punched so that the portion having the maximum length L1 of the bodily fluid absorbing pad is adjacent. Is preferred.

  According to the present invention, it is possible to provide a bodily fluid absorbing contact material that is less likely to be twisted during use. Further, when manufacturing the bodily fluid absorbing pad, a plurality of bodily fluid absorbing batting materials can be punched out so that the wide portions on one side are adjacent to each other without any gap along the sheet material conveying direction. In addition, the body fluid absorbing pad can be produced from the sheet material with a high yield. In addition, since the trim, which is a waste material of the sheet material generated by punching the body fluid absorbing pad, can be integrally formed, the trim processing is easy and can be efficiently manufactured.

1 is a plan view of a bodily fluid absorbing pad according to an embodiment of the present invention. FIG. 2 is a bottom view of the bodily fluid absorbing pad in FIG. 1. It is the elements on larger scale of the bodily fluid absorption pad of FIG. It is explanatory drawing which shows the method to measure extensibility. It is explanatory drawing which shows schematic structure of the manufacturing method of the bodily fluid absorption pad of FIG. It is explanatory drawing which showed the aspect by which the bodily fluid absorption adhesive material which concerns on one Embodiment of this invention is punched out from a sheet | seat material. It is explanatory drawing which showed the aspect by which the conventional body fluid absorption pad is punched out from a sheet material. It is a top view of the bodily fluid absorbing material according to another embodiment of the present invention. It is an expanded sectional view which follows the AA line of FIG.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 and 2, the bodily fluid absorbing pad 1 has a multilayer structure including a top sheet 2, a back sheet 3, and an absorbent sheet 4 sandwiched between the top sheet 2 and the back sheet 3. It consists of The bodily fluid absorbing pad 1 of the present embodiment has a three-layer structure in which a top sheet 2, an absorbent sheet 4 and a back sheet 3 are laminated in this order. The top sheet 2, the back sheet 3, and the absorbent sheet 4 have the same size and shape, and the entire sheet is bonded to each other with an adhesive or the like. The bodily fluid absorbing patch 1 is packaged by a packaging bag (not shown) until use.

  The bodily fluid absorbing pad 1 is formed in a vertically long shape in accordance with the crotch portion that is the mounting site. That is, the bodily fluid absorbing pad 1 has a length in the longitudinal direction (longitudinal direction, left and right direction in FIG. 1) in plan view longer than the length in the lateral direction (width direction, up and down direction in FIG. 1). It is set long. Further, the bodily fluid absorbing pad 1 is formed in a symmetrical shape with respect to a center line C1 extending in the longitudinal direction, that is, a center line C1 that bisects the dimension in the width direction.

  On the surface sheet 2 side of the bodily fluid absorbing pad 1, a crimping portion 6 for fixing the sheets 2 to 4 is provided along the outer peripheral edge 10 over the entire circumference. In this embodiment, the pressure-bonding portion 6 is formed by applying heat and pressure and applying heat-compression processing (embossing) to make unevenness and denting the surface of the body fluid-absorbing pad 1 toward the back side. Is done. The sheets 2 to 4 are pressed and strongly bonded by the pressure-bonding portion 6, so that the sheets 2 to 4 are strongly fixed at the outer peripheral edge 10. Note that the crimping portion 6 is not necessarily formed by thermocompression processing (embossing), and the crimping portion 6 may be formed by simple crimping or ultrasonic crimping that applies only pressure without applying heat.

  The body fluid absorbing pad 1 is directed to the side edges 11 and 12 (hereinafter, referred to as “left side edge 11” and “right side edge 12”) on both sides in the width direction extending in the longitudinal direction, and forward and backward when in use. It has a front edge 13 and a rear edge 14 located. The front edge 13 and the rear edge 14 are connected to the left edge 11 and the right edge 12, respectively. In the present embodiment, the left side edge 11, the right side edge 12, the front end edge 13 and the rear end edge 14 of the bodily fluid absorbing pad 1 are collectively referred to as an “outer peripheral edge 10”.

  The left side edge 11 and the right side edge 12 are constricted inwardly and narrow in the middle, and have a constricted part 7 which is a portion where the length in the width direction (lateral width) is the smallest L3. In this embodiment, the left side edge 11 and the right side edge 12 are dented so as to draw a gentle curve line inward from the front end edge 13 to the rear end edge 14, and in the longitudinal direction of the bodily fluid absorbing pad 1. A constricted portion 7 is provided at the center position. The front edge 13 and the rear edge 14 are formed in a shape in which the center position is gently curved outward. Moreover, the four corners of the bodily fluid absorbing pad 1 are rounded.

  The front end edge 13 and the rear end edge 14 are L1 and L2 having the maximum length in the width direction (lateral width) on one side (front side) and the other side (rear side) in the longitudinal direction of the bodily fluid absorbing pad 1, respectively. (A wide part) 8A and 8B which become. In use, the first wide portion 8A on one side of the body fluid absorbing pad 1 is arranged to correspond to the excretion portion of the wearer, and the second wide portion 8B on the other side corresponds to the wearer's buttocks. The narrow portion 7 having a narrow width in the width direction is arranged to correspond to the wearer's crotch.

  Further, the front end edge 13 has a left side edge 11 and a right side at both ends so that the first wide portion 8A on one side having the maximum length L1 continues a predetermined length in the longitudinal direction as shown in FIG. At the boundary with the edge 12, it is formed so as to extend linearly in the longitudinal direction. For example, the length W in the longitudinal direction of the first wide portion 8A on one side is preferably 0.5 mm to 3.0 mm, for example, 1.5 mm.

  In the bodily fluid absorbing pad 1 of the present embodiment, the maximum length L1 of the first wide portion 8A on one side arranged to correspond to the excretion portion side of the wearer and the heel portion side are arranged. The maximum length L2 of the second wide portion 8B on the other side is different, and the maximum length L2 is set shorter than the maximum length L1. That is, in the bodily fluid absorbing pad 1 of the present embodiment, the second wide portion 8B on the other side is formed to have a smaller outer shape than the first wide portion 8A on the one side. As described above, the external shape of the bodily fluid absorbing pad 1 is wide on the excretory side and is thinned to the buttocks side, and is excreted on the buttocks side, similar to the shape of the portion to which the bodily fluid absorbing pad 1 of the underwear is attached. Since it is slightly narrower than the part side, the bodily fluid absorbing pad 1 moves in conjunction with the underwear. Therefore, when the bodily fluid absorbing pad 1 is attached to the underwear, the bodily fluid absorbing pad 1 is interlocked with the underwear even if the buttocks greatly fluctuate due to body movement such as walking. It is possible to suppress the occurrence of twisting in the base material 1. Therefore, it is possible to prevent the attachment comfort of the bodily fluid absorbing pad 1 or the occurrence of side leakage due to the occurrence of twisting, so that the bodily fluid absorbing pad 1 can be used comfortably. .

  In addition, as will be described in detail later, a blade having a shape corresponding to the outer shape of the bodily fluid absorbing pad 1 is used when the bodily fluid absorbing pad 1 is manufactured. A sheet (not shown) is successively punched in the conveying direction (length direction) of the sheet material 20 so that the longitudinal direction of the bodily fluid absorbing pad 1 matches the width direction of the sheet material 20. A plurality of bodily fluid absorbing pads 1 are separated from each other. At that time, even if a plurality of body fluid absorbing pads 1 are punched out so that the wide portions 8A on one side are adjacent to each other without being spaced along the conveying direction of the sheet material 20, the wide portion 8B on the other side Since there is a space between them, the trim 16 that is a waste material of the sheet material 20 generated by punching the body fluid absorbing pad 1 can be integrally formed. Therefore, the process of the trim 16 becomes easy and can be manufactured efficiently. Moreover, since the bodily fluid absorbing pad 1 can be punched out without a gap along the conveying direction of the sheet material 20, the bodily fluid absorbing pad 1 can be manufactured from the sheet material 20 with a high yield.

  Although the difference between the maximum length L1 and the maximum length L2 described above is not particularly limited, the difference in length is determined by the above-described plurality of bodily fluid absorbing pads 1 in the conveying direction of the sheet material 20. This corresponds to the distance D between the wide portions 8B on the other side when punched without a gap along the line. Therefore, the larger the difference (interval D) between the maximum length L1 and the maximum length L2, the more difficult the trim 16 is to be divided. However, the external appearance of the bodily fluid absorbing pad 1 is somewhat distorted, and the appearance impression May cause a sense of discomfort. On the other hand, if the difference (interval D) between the maximum length L1 and the maximum length L2 is too small, the trim 16 is likely to be divided when the plurality of body fluid absorbing pads 1 are punched from the sheet material 20, There is a possibility that the processing of the trim 16 becomes complicated. Therefore, the difference between the maximum length L1 and the maximum length L2 is preferably 3 mm or more and 10 mm or less, and is 5 mm in this embodiment. In addition, if the difference between the maximum length L1 and the maximum length L2 is 3 mm to 5 mm, when the wearer attaches the bodily fluid absorbing pad 1 to the underwear, the orientation is wrong, and the bodily fluid absorbing pad Even if the first wide portion 8A on one side of 1 is arranged so as to correspond to the wearer's buttocks, and the second wide portion 8B on the other side is arranged so as to correspond to the excretion portion of the wearer, Can be used without a sense of incongruity.

  Further, in the bodily fluid absorbing pad 1 of the present embodiment, the constricted portion 7 is located at the center in the longitudinal direction of the bodily fluid absorbing pad 1 so that the wearer affixes the bodily fluid absorbing pad 1 to the underwear. Even if the direction is wrong, it can be used without any further discomfort. Note that the constricted portion 7 does not necessarily need to be positioned at the center in the longitudinal direction of the bodily fluid absorbing pad 1, and may be shifted from the center position to either the front edge 13 side or the rear edge 14 side. .

  The top sheet 2 is in direct contact with the crotch portion, and has liquid permeability so that body fluids such as cages, menstrual blood, and sweat can pass therethrough and penetrate into the lower absorbent sheet 4. The surface sheet 2 is not particularly limited in the material or the sheet structure, and examples of the material forming the surface sheet 2 include polyester fiber, polyamide fiber, acrylic fiber, polypropylene fiber, and polyethylene / polyester composite. Examples include fibers, synthetic fibers such as polyethylene / polypropylene composite fibers, natural fibers such as cotton, wool and hemp, semi-synthetic fibers such as rayon fibers and acetate fibers, and blended and mixed products of various fibers. In particular, synthetic fiber is preferable. The sheet structure of the surface sheet 2 is not particularly limited, and examples thereof include a woven fabric, a knitted fabric, a nonwoven fabric, and a felt. Among these, non-woven fabrics are preferable from the viewpoint of good touch, irritation to the skin, and absorbability. Moreover, the surface sheet 2 may have a porous structure such as a mesh shape in order to improve liquid permeability. Furthermore, the top sheet 2 is not limited to a single layer, and may be composed of two or three or more layers of liquid-permeable nonwoven fabric.

  The absorbent sheet 4 is not particularly limited as long as it has the ability to absorb body fluids, and is generally used for sanitary napkins, panty liners, diapers, sweat-absorbing sheets, and the like, such as water-absorbing pulp and water-absorbing polymer. Or a fiber structure composed of a woven fabric, a knitted fabric, a nonwoven fabric, a pulp product, or the like. Especially, it is preferable to use the accumulation body (for example, nonwoven fabric) which consists of a natural fiber and a synthetic fiber from the point which is comfortable and is excellent in absorptivity. Examples of natural fibers include cotton, silk, pulp, wool and hemp. Among such natural fibers, cellulose fibers such as cotton and pulp (which are not protein-based components) are preferable from the viewpoint that contact dermatitis such as allergy is unlikely to occur, rash is hardly caused, and absorption is excellent. Examples of synthetic fibers include nylon fibers, polyethylene fibers, polyester fibers, polyamide fibers, acrylic fibers, polyvinyl alcohol fibers, polypropylene fibers, polyethylene terephthalate fibers, ethylene vinyl acetate fibers, urethane fibers, and acrylic fibers. Moreover, semi-synthetic fibers such as rayon fiber, acetate fiber, and cupra, and blended products and blended products of various fibers can also be used. Of these, synthetic fibers such as ethylene vinyl acetate fiber, polypropylene fiber, polyethylene fiber, polyester fiber, and polyethylene terephthalate fiber, or composite fibers thereof are preferable from the viewpoint of dry feeling, texture, and heat sealability. Examples of the composite fiber include polyethylene / polyester (including polyethylene terephthalate) composite fiber, polyethylene / polypropylene composite fiber, and ethylene vinyl acetate / polypropylene composite fiber. These may be used alone or in combination of two or more. Examples of combinations of two or more types include combinations of cellulosic fibers and composite fibers, and the blending ratio can be, for example, 4: 6 to 8: 2.

  The back sheet 3 is a sheet (including a film) having liquid impermeability that prevents the body fluid absorbed by the absorbent sheet 4 from flowing out to the outside. In this embodiment, the back sheet 3 is composed of a liquid impervious film. . Examples of the liquid-impermeable film include films made of polyethylene, polypropylene, polyester, nylon, polyvinyl alcohol, cellophane, vinyl chloride, and the like, or multilayer films thereof. In addition, as the back sheet 3, a material having liquid impermeability and air permeability can be used, and a resin film is laminated on a liquid impermeable nonwoven fabric such as SMS, or a spunbond nonwoven fabric or a point bond nonwoven fabric. Things can also be used.

  Nonwoven fabrics mentioned above are wet papermaking, dry papermaking, spunbond, meltblown, latex resin bond, solvent bond, stitchbond, needle punch, spunlace, thermal bond, air-through, airlaid It can be manufactured by a method such as a method. Of these, methods such as the spunlace method, thermal bond method, air-through method, airlaid method, needle punch method, and spunbond method are preferable. Since these methods have a good texture and do not use an adhesive or a solvent, it is applied to the skin. The safety can be increased.

  In addition, the bodily fluid absorbing pad 1 is not necessarily limited to the above-described laminated structure. For example, between the top sheet 2 and the absorbent sheet 4, there is a liquid permeation effect, a diffusion effect, or an effect of stopping the body fluid from returning to the surface side. It is good also as a laminated structure of four or more layers, such as providing a sheet.

  The bodily fluid absorbing pad 1 of this embodiment includes a non-woven fabric in at least one of a plurality of constituting sheets. For example, the top sheet 2 is made of a nonwoven fabric. And the fiber which comprises the said nonwoven fabric has faced the width direction, ie, the orientation of the fiber has become the width direction. In addition, it is not necessary for all the fibers constituting the nonwoven fabric to face in the width direction. For example, it is sufficient that a large number of people can visually confirm that the fibers are flowing in the width direction.

  When any of the sheets constituting the bodily fluid absorbing base material 1 is made of a nonwoven fabric in which the orientation of the fibers is in the width direction, the bodily fluid discharged to the surface of the top sheet 2 is for absorbing bodily fluids along the direction of the fibers. It is urged in the width direction of the pad 1 and easily spreads in the width direction. When the absorbed bodily fluid spreads in the longitudinal direction of the bodily fluid absorbing patch 1, the region of the absorbent sheet 4 that has absorbed the bodily fluid comes into contact with the skin, and the wearer may feel uncomfortable. In the bodily fluid absorbing pad 1 of the present embodiment, the absorbed body fluid is expanded in the width direction as much as possible, and by suppressing the spread in the longitudinal direction, it is possible to suppress the spread of dirt in places other than the excretory part, The wearer can use it comfortably.

  Moreover, the bodily fluid absorbing pad 1 of this embodiment has a lower extensibility in the width direction than an extensibility in the longitudinal direction. That is, the length that is extended when the same load is applied and pulled is smaller in the width direction than in the longitudinal direction. The difference in extensibility between the longitudinal direction and the width direction is due to the orientation of the fibers of the nonwoven fabric constituting the bodily fluid absorbing pad 1 described above, but the extensibility of the bodily fluid absorbing pad 1 in the longitudinal direction. Because it is high, the pressure applied to the skin is reduced, the feeling of fitting and fit is improved, the uncomfortable feeling of wearing can be eased, and the repulsive force of the fiber increases because the stretchability in the width direction is low, Can reduce the twist and tear on the usage side.

  As a measuring method of this extensibility, the method according to JISL19136.3 can be illustrated. A sample obtained by cutting the bodily fluid absorbing pad 1 into a length of 120 mm and a width of 20 mm is arranged in a vertical direction, and as shown in FIG. Then, the length L of the part not sandwiched between the jigs 16 of the sample is fixed at 100 mm. Then, the sample is pulled with a force of 20 N by hanging a weight or the like, and the length of the portion L of the sample not stretched by the jig 16 is measured. As a result, the extensibility in the longitudinal direction can be calculated from the ratio of the measured length of the portion L after extension to the length of the portion L before extension. In addition, a sample obtained by cutting the bodily fluid absorbing patch 1 into a length of 50 mm and a width of 20 mm is disposed in the horizontal direction, and similarly, a portion extending from the upper end and the lower end to the length of 10 mm is sandwiched between the jigs 16 and the sample. The length L of the part L not clamped by the jig 16 of the body fluid absorbing pad 1 is fixed by fixing the length L of the part not clamped by the jig 16 at 30 mm and pulled with a force of 20 N. Measure. As a result, the extensibility in the width direction can be calculated from the ratio of the measured length of the portion L after extension to the length of the portion L before extension.

  The back sheet 3 is provided with an adhesive layer 5 for attaching the bodily fluid absorbing pad 1 to an undergarment or the like. The pressure-sensitive adhesive layer 5 is covered with a release sheet (not shown) that protects the pressure-sensitive adhesive layer 5 until the body fluid-absorbing pad 1 is used (when worn on the underwear) and can be peeled off from the pressure-sensitive adhesive layer 5 during use. . The release sheet is formed by applying a release agent to a sheet material such as a plastic film, a fiber sheet, or paper, and the release agent side is attached to the adhesive layer 5.

  The adhesive layer 5 is provided by applying an adhesive to the back sheet 3. The pressure-sensitive adhesive used for the pressure-sensitive adhesive layer 5 is not particularly limited as long as the body fluid absorbing patch 1 can be attached to the underwear. For example, a water-soluble adhesive (for example, an acrylic water-soluble adhesive) or An adhesive such as a water-insoluble adhesive (for example, rubber-based hot melt, olefin-based hot melt) can be used. Among these, a water-insoluble adhesive is preferable, and a rubber-based hot melt is more preferable from the viewpoint of superior adhesive strength to underwear compared to other pressure-sensitive adhesives.

  The adhesive layer 5 may be provided so as to cover almost all of the back sheet 3 or may be provided so as to partially cover the back sheet 3. In the present embodiment, the adhesive layer 5 is configured by a band-like adhesive region 50 extending from the left edge 11 to the right edge 12 of the bodily fluid absorbing pad 1, and the plurality of adhesive areas 50 are the bodily fluid absorbing pad 1. The stripes are arranged in parallel with a certain interval in the longitudinal direction. A band-shaped non-adhesive region 51 is provided between the adjacent adhesive regions 50.

  Next, with reference to FIG. 5, the manufacturing method of the bodily fluid absorption pad 1 of this embodiment is demonstrated. The manufacturing method of the bodily fluid absorbing pad 1 according to the present embodiment transports the strip-shaped raw sheets 17 to 19 of the sheets 2 to 4 constituting the bodily fluid absorbing pad 1 so that the length direction is the transport direction. A conveying step, a bonding step in which each of the original fabric sheets 17 to 19 are bonded to form a belt-like sheet material 20, and the sheet material 20 is punched out with the outer shape of the bodily fluid absorbing pad 1 to absorb body fluid from the sheet material 20. And a punching process for separating the application material 1. And the bonding apparatus 21, the thermocompression bonding apparatus 22, the punching apparatus 23, and the conveyance conveyor 24 are arrange | positioned along the conveyance direction in the conveyance path of each original fabric sheet 17-19.

  First, in a conveyance process, strip | belt-shaped original fabric sheets 17-19 are unwound from each original fabric roll 25-27 by well-known conveyance means (not shown), such as a conveyance roll, and a length direction turns into a conveyance direction. So that it is transported. And among the conveyed original fabric sheets 17-19, on one side of the original fabric sheets 18 and 19 for obtaining the absorption sheet 4 and the back sheet 5, the coaters 28 and 29 are used, respectively. Is applied.

  In the next bonding step, the bonding apparatus 21 is configured by a pair of heating rolls 21A and 21B. By passing between the heating rolls 21 </ b> A and 21 </ b> B in a state where the original fabric sheets 17 to 19 are laminated, the original fabric sheets 17 to 19 are bonded to each other by heat fusion, and a belt-like sheet material 20 is formed. The And the sheet | seat material 20 is supplied to the thermocompression bonding apparatus 22 located downstream.

  In the next thermocompression bonding step, the thermocompression bonding device 22 includes an emboss (not shown) corresponding to the shape of the outer peripheral edge (a predetermined portion inside the outer peripheral edge 10) of the bodily fluid absorbing pad 1 on the outer peripheral surface. The embossing roll 22 </ b> A and the backup roll 22 </ b> B disposed so as to be in contact with the embossing roll 22 </ b> A are configured. As the sheet material 20 passes between the embossing roll 22A and the backup roll 22B, the sheet material 20 is thermocompression-bonded (embossed) along the shape of the outer peripheral edge of the bodily fluid absorbing pad 1 as shown in FIG. In addition, a plurality of crimping portions 6 are formed on the sheet material 20. And the sheet | seat material 20 in which the some crimping | compression-bonding part 6 was formed is supplied to the punching apparatus 23 located downstream.

  In the next punching step, the punching device 23 includes a cutting roll 23A having a blade shape (not shown) corresponding to the shape of the outer peripheral edge 10 of the bodily fluid absorbing pad 1 on the outer peripheral surface, a cutting roll 23A, It is constituted by a backup roll 23B arranged so as to face each other. By passing between the cutting roll 23A and the backup roll roll 23B, the sheet material 20 is cut along the shape (outer shape) of the outer peripheral edge of the bodily fluid absorbing pad 1 and along the conveying direction of the sheet material 20. The bodily fluid absorbing material 1 is punched one after another. The punched individual bodily fluid absorbing material 1 is transferred to the transport conveyor 24, and is transported to the next process for individual packaging. On the other hand, the trim 16 that is the waste material of the sheet material 20 from which the bodily fluid absorbing padding material 1 is punched is wound around the cutting roll 23A and then collected along the direction of the arrow in FIG.

  In the punching process described above, the plurality of bodily fluid absorbing pads 1 are formed from the belt-like sheet material 20 with high yield, so that the longitudinal direction of the bodily fluid absorbing pad 1 is in the width direction of the sheet material 20. The bodily fluid-absorbing pad 1 is punched out in an adjacent manner along the conveying direction (length direction) of the sheet material 20.

  Here, as in the conventional bodily fluid absorbing pad 100 (shown in FIG. 7), the maximum length of the wide portion 101A on one side arranged to correspond to the excretion portion side of the wearer, and the buttocks side of the wearer In order to form the plurality of bodily fluid absorbing pads 1 from the belt-like sheet material 20 with the highest yield, the plurality of bodily fluid absorbing members have the same maximum length of the other wide portion 101B arranged to correspond to When the application material 100 is punched so that the wide portions 101 </ b> A are adjacent to each other without leaving an interval along the conveying direction of the sheet material 20, the other wide portions 101 </ b> B are adjacent to each other. Therefore, the trim 16 generated when the bodily fluid absorbing pad 100 is punched is divided into a plurality of pieces. If the trim 16 is divided, the processing of the trim 16 becomes complicated, which is not preferable in manufacturing. Therefore, when manufacturing the conventional bodily fluid absorbing pad 100, it is necessary to punch a plurality of bodily fluid absorbing pads 100 at intervals along the conveying direction of the sheet material 20, as shown in FIG. However, this has a problem that the yield is poor.

  On the other hand, when manufacturing the bodily fluid absorbing pad 1 of the present embodiment, the maximum length L1 is set without spacing the plural bodily fluid absorbing pads 1 along the conveying direction of the sheet material 20. Even if it is punched out so that the wide portions 8A on one side are adjacent to each other, the wide portions 8B on the other side having the maximum length L2 are spaced apart. Therefore, the trim 16 generated by the punching of the bodily fluid absorbing pad 1 can be integrally formed. Therefore, the process of the trim 16 becomes easy and can be manufactured efficiently. Moreover, since the bodily fluid absorbing pad 1 can be punched out without a gap along the conveying direction of the sheet material 20, the bodily fluid absorbing pad 1 can be manufactured from the sheet material 20 with a high yield.

  Moreover, when manufacturing the bodily fluid absorbing pad 1 of the present embodiment, at least one of the original fabric sheets 17 to 19 for obtaining the topsheet 3, the absorbent sheet 4 and the backsheet 5. The sheet is a strip-shaped nonwoven fabric, and a fiber in which the fibers constituting the nonwoven fabric are oriented in the length direction (fiber orientation is in the length direction) is used. Therefore, the manufactured bodily fluid absorbing pad 1 includes a non-woven fabric in at least one of a plurality of sheets, and the fibers constituting the non-woven fabric face in the width direction. Is the width direction.

  According to the bodily fluid absorbing pad 1 according to the present invention described above, the maximum length L2 of the second wide portion 8B on the other side arranged to correspond to the wearer's buttocks side corresponds to the excretion portion side. When the body fluid absorbing padding material 1 is attached to the underwear and used, the body movement such as walking, etc., is formed shorter than the maximum length L2 of the first wide portion 8A on the one side. Even if the buttocks fluctuate greatly, it is possible to suppress the occurrence of twisting in the bodily fluid absorbing pad 1. Therefore, it is possible to prevent the attachment comfort of the bodily fluid absorbing pad 1 or the occurrence of side leakage due to the occurrence of twisting, so that the bodily fluid absorbing pad 1 can be used comfortably. .

  Further, when manufacturing the bodily fluid absorbing pad 1, a plurality of bodily fluid absorbing batting materials 1 are punched out so that the wide portions 8 </ b> A on one side are adjacent to each other without a gap along the conveying direction of the sheet material 20. Therefore, the bodily fluid absorbing material 1 can be produced from the sheet material 20 with a high yield. In addition, since the trim 16 which is a waste material of the sheet material 20 generated by punching the bodily fluid absorbing padding material 1 can be integrally formed, the treatment of the trim 16 is easy and can be efficiently manufactured. .

  Further, the first wide portion 8A on one side where the maximum length of the bodily fluid absorbing pad 1 is L1 is adjacent to the first wide portion 8A on one side of the adjacent bodily fluid absorbing pad 1 at the time of manufacture. The sheet material 20 is punched out like this. Therefore, also about the blade die (not shown) of the cutting roll 23A for punching the bodily fluid absorbing batting material 1 from the sheet material 20, the portion corresponding to the first wide portion 8A on one side of the bodily fluid absorbing batting material 1 The cutting roll 23A is provided so as to be adjacent to the portion of the adjacent blade mold (not shown). Here, when the outline of the first wide portion 8A on one side of the bodily fluid absorbing pad 1 is not linear, the blade die (not shown) is in contact with the adjacent blade die (not shown) only by the contact ( Although it will be provided on the cutting roll 23A in a state of point contact, in this case, the blade mold (not shown) is likely to be damaged, and the durability of the blade mold (not shown) is inferior. . On the other hand, when the outline of the first wide portion 8A on one side of the bodily fluid absorbing pad 1 is linear as in this embodiment, the blade type (not shown) is adjacent to the blade type (not shown). Since it is provided on the cutting roll 23A in a state of being in line contact with the unillustrated), it is difficult to break, and the durability of the blade mold (not illustrated) can be improved.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning. For example, in the said embodiment, although the crimping | compression-bonding part 6 is provided in the outer periphery 10 of the bodily fluid absorption base material 1, as shown in FIG.8 and FIG.9, from the outer periphery 10 of the bodily fluid absorption base material 1 May be provided along the outer peripheral edge 10 over the entire circumference. Moreover, in FIG. 8, the crimping | compression-bonding part 6 is formed in the shape different from the shape of the outer periphery 10 of the bodily fluid absorption base material 1, and is formed in the arabesque pattern which designed the mode that the vine was intertwined. Thereby, the design property of the bodily fluid absorbing pad 1 is enhanced, and an excellent design effect can be imparted to the bodily fluid absorbing pad 1, so that the user's willingness to purchase can be enhanced. However, in FIG. 8, you may form the crimping | compression-bonding part 6 in the cyclic | annular pattern which followed the shape of the outer periphery 10 of the bodily fluid absorption base material 1. FIG. In the embodiment of FIG. 8, the crimping portion 6 is provided inside the outer peripheral edge 10 of the bodily fluid absorbing pad 1, and the outer peripheral edge 10 is not crimped, so the outer peripheral edge 10 of the bodily fluid absorbing pad 1. The texture of can be softened. Therefore, since the touch at the time of use can be made comfortable, a user does not feel uncomfortable. In addition, a plurality of pressure-bonding portions are further provided at intervals on the outer peripheral edge 10 of the bodily fluid absorbing pad 1 and the sheets 2 to 4 are locally fixed to each other at the outer peripheral edge 10, whereby each of the sheets 2 to 4 is provided. It is possible to prevent the body fluid from being rolled up and to improve the feeling of wearing of the bodily fluid absorbing pad 1.

  Moreover, in the said embodiment, the surface sheet 2, the back sheet 3, and the absorption sheet 4 are the same magnitude | sizes and shapes, and the crimping | compression-bonding part 6 is the state which pinched | interposed the absorption sheet 4 between the surface sheet 2 and the back sheet 3 However, the absorbent sheet 4 is formed to be slightly smaller than the top sheet 2 and the back sheet 3 without sandwiching the absorbent sheet 4, and the top sheet 2 and the back sheet 3. May be formed by thermocompression bonding (embossing).

  Also, in order to improve the feeling of contact with the skin and promote the diffusion of absorbed body fluid, a plurality of concave portions are formed on the surface sheet 2 side (surface side) of the body fluid absorbing pad 1 by thermocompression bonding (embossing) or the like. May be formed.

DESCRIPTION OF SYMBOLS 1 Body fluid absorbing material 2 Surface sheet 3 Back sheet 4 Absorption sheet 7 Constricted part 8A, 8B Wide part

Claims (8)

  1. A bodily fluid absorbing patch made by laminating a plurality of sheets,
    The length in the longitudinal direction is formed in a vertically long shape longer than the length in the width direction orthogonal thereto, and is formed in a symmetrical shape with respect to the center line extending in the longitudinal direction,
    The left and right side edges extending in the longitudinal direction are bound inside,
    A bodily fluid absorbing contact material in which the maximum length L1 in the width direction on one side in the longitudinal direction is longer than the maximum length L2 in the width direction on the other side.
  2.   The bodily fluid absorbing pad according to claim 1, wherein the difference between the maximum length L1 in the width direction on one side in the longitudinal direction and the maximum length L2 in the width direction on the other side is 3 mm or more and 10 mm or less.
  3.   3. The bodily fluid absorbing pad according to claim 1, wherein the side edge is formed such that a constricted portion having a minimum length L <b> 3 in the width direction is located in the center in the longitudinal direction.
  4. Non-woven fabric is included in the plurality of sheets,
    The body fluid absorbing pad according to any one of claims 1 to 3, wherein fibers constituting the nonwoven fabric are oriented in the width direction.
  5.   The bodily fluid absorbing pad according to any one of claims 1 to 4, wherein a length that extends when pulled by applying the same load is smaller in the width direction than in the longitudinal direction.
  6.   The body fluid absorbing pad according to any one of claims 1 to 5, wherein the portion having the maximum length L1 extends a predetermined length in the longitudinal direction.
  7. The length in the longitudinal direction is longer than the length in the width direction perpendicular to the length, and the outer shape is formed in a symmetrical shape with respect to the center line extending in the longitudinal direction. A method for producing a bodily fluid absorbing adhesive material that is bound inside and whose maximum length L1 in the width direction on one side in the longitudinal direction is longer than the maximum length L2 in the width direction on the other side,
    Transporting a plurality of strip-shaped raw fabric sheets constituting the bodily fluid absorbing patch, such that the length direction is the transport direction;
    A pasting step of pasting each of the original fabric sheets into a strip-shaped sheet material,
    Punching out the sheet material with the outer shape of the bodily fluid absorption pad, and separating the bodily fluid absorption pad from the sheet material, and at least,
    In the punching step, a manufacturing method in which the longitudinal direction of the bodily fluid absorbing pad is aligned with the width direction of the sheet material, and the bodily fluid absorbing pad is successively punched along the conveying direction of the sheet material .
  8.   The manufacturing method according to claim 7, wherein in the punching step, the bodily fluid absorbing pad is punched so that a portion having the maximum length L1 of the bodily fluid absorbing pad is adjacent.
JP2014262217A 2014-12-25 2014-12-25 Humor-absorbing pad material and manufacturing method thereof Pending JP2016120086A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06502108A (en) * 1991-07-23 1994-03-10
JPH07138865A (en) * 1993-04-28 1995-05-30 Johnson & Johnson Inc Non-woven panty liner and method and device for producing the same
JPH09322909A (en) * 1996-06-06 1997-12-16 Toa Kiko Kk Multi-column type production facilities for sanitary product
JP2001522695A (en) * 1997-11-19 2001-11-20 エスシーエー・ハイジーン・プロダクツ・アーベー Sanitary napkin, incontinence protector, panty liner or absorbent article such as those of similar goods
JP2006297073A (en) * 2005-03-23 2006-11-02 Kao Corp The absorbent article
JP2007097643A (en) * 2005-09-30 2007-04-19 Daio Paper Corp Absorbent article
JP2008023248A (en) * 2006-07-25 2008-02-07 Uni Charm Corp Auxiliary pad and absorbent article with it
JP2012157402A (en) * 2011-01-28 2012-08-23 Unicharm Corp Absorbent article
JP2014198074A (en) * 2013-03-29 2014-10-23 日本製紙クレシア株式会社 Absorbent article having flap

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06502108A (en) * 1991-07-23 1994-03-10
JPH07138865A (en) * 1993-04-28 1995-05-30 Johnson & Johnson Inc Non-woven panty liner and method and device for producing the same
JPH09322909A (en) * 1996-06-06 1997-12-16 Toa Kiko Kk Multi-column type production facilities for sanitary product
JP2001522695A (en) * 1997-11-19 2001-11-20 エスシーエー・ハイジーン・プロダクツ・アーベー Sanitary napkin, incontinence protector, panty liner or absorbent article such as those of similar goods
JP2006297073A (en) * 2005-03-23 2006-11-02 Kao Corp The absorbent article
JP2007097643A (en) * 2005-09-30 2007-04-19 Daio Paper Corp Absorbent article
JP2008023248A (en) * 2006-07-25 2008-02-07 Uni Charm Corp Auxiliary pad and absorbent article with it
JP2012157402A (en) * 2011-01-28 2012-08-23 Unicharm Corp Absorbent article
JP2014198074A (en) * 2013-03-29 2014-10-23 日本製紙クレシア株式会社 Absorbent article having flap

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