WO2015079557A1

WO2015079557A1 - Disposable body warmer

Info

Publication number: WO2015079557A1
Application number: PCT/JP2013/082167
Authority: WO
Inventors: 剛伊賀上
Original assignee: 小林製薬株式会社
Priority date: 2013-11-29
Filing date: 2013-11-29
Publication date: 2015-06-04
Also published as: JPWO2015079557A1

Abstract

Provided is a disposable body warmer with which appearance defects do not occur during steps to manufacture the disposable body warmer. The disposable body warmer is provided with: a bag body one surface of which is breathable and in which is sealed a heat-generating composition that generates heat when contacted with air; an adhesive layer provided to the other surface of the bag body; and a release sheet provided to the other surface of the bag body in such a manner as to cover the adhesive layer. The bag body has a convex-shaped protruding section at least at one end, and from the one end to the other end on the opposite side, has a non-adhesive region which includes the end of the protruding section and to which the adhesive layer is not provided. A notch located over the non-adhesive region is provided to the release sheet. The notch is configured so that a plurality of notches are intermittently provided along the non-adhesive region, or so that a single notch is provided extending along the non-adhesive region from a position at which a space is formed at a peripheral edge of the protruding section.

Description

Disposable body warmer

The present invention relates to a disposable body warmer that is attached to clothing.

Conventionally, disposable warmers in which a heat generating composition that generates heat by contact with air is encapsulated in a flat bag body having a ventilation surface as a body warmer, and among them, for clothes, etc. On the other hand, so-called sticking-type disposable warmers that can be stuck are widely used. This type of disposable hand warmer has an adhesive layer formed on one surface of the bag, and is attached to clothing or the like via this adhesive layer. This adhesive layer is covered with the release sheet until the disposable body warmer is used.

Here, if the adhesive layer is formed on the entire surface of one side of the bag body, it is necessary to turn off the edge of the release sheet at the peripheral edge of the bag body, and it is difficult to peel off the release sheet. Therefore, in order to make it easy to peel the release sheet from the bag body, as shown in FIGS. 13 and 14, a non-adhesive region 103 that does not form the adhesive layer 102 is provided on one surface of the bag body 101, and the non-adhesive region A disposable body warmer 100 has been proposed in which a release sheet 104 is provided with a slit 105 extending from end to end so as to be positioned at 103. In this disposable body warmer 100, the end of the release sheet 104 divided into two by the slit 105 can be turned up, and the release sheet 104 can be easily peeled off from the bag body 101.

Such a disposable body warmer is manufactured as follows (see, for example, Patent Document 1). First, as shown in FIG. 15, a pair of upper heating rolls 110 </ b> A and 110 </ b> B, a pair of lower heating rolls 112 </ b> A and 112 </ b> B, and a punching device 113 are disposed in the vertical position in the vertical direction. First, the

packaging sheet materials

101A and 101B are supplied between the

upper heating rolls

110A and 110B. In the

upper heating rolls

110A and 110B, the

packaging sheet materials

101A and 101B are heat-fused into the desired shape of the bag body 101 while the heat generating composition 106 is fed between the

packaging sheet materials

101A and 101B from the feeding means (shooter) 111. To wear. Thereby, the exothermic composition 106 is enclosed in the bag body 101. Note that a release sheet 104 is attached in advance to the surface of one packaging sheet material 101B via an adhesive layer 102. Then, the

packaging sheet materials

101A and 101B are supplied to the

lower heating rolls

112A and 112B positioned below, and the

packaging sheet materials

101A and 101B on which the bag body 101 is formed by the

lower heating rolls

112A and 112B again. By heat-sealing along the shape of the bag body 101, the heat-sealing strength of the bag body 101 is increased. Thereafter, the

packaging sheet materials

101A and 101B are supplied to a punching device 113 positioned below. The punching device 113 has a packaging sheet material 101A between the cutting roll 113A having a cutting blade 114 corresponding to the outer shape of the bag body 101 (the shape of the heat fusion part of the bag body 101) on the surface, and the cutting roll 113A. A punching roll 113B for individually punching the bag body 101 from 101B, and punching the bag body 101 at a portion of the bag body 101 to which the

packaging sheet materials

101A and 101B are continuously supplied, thereby providing the packaging sheet material 101A. , 101B, the individual bags 101 are separated. The bag body 101 individually punched from the

packaging sheet materials

101A and 101B by the punching device 113 falls by its own weight on the transport conveyor 115 arranged at a lower position in the vertical direction, and is transported to the next process. In the next step, the upper surface of the bag body 101 is pressed by a roller (not shown) or the like in order to level the shape of the bag body 101 by leveling the exothermic composition 106 enclosed in the bag body 101, and the disposable body warmer. Is manufactured. The disposable body warmer manufactured in this way is enclosed in a non-breathable storage bag by hand or using a machine, and stored in an airtight state in the storage bag.

Japanese Utility Model Publication No. 6-7720

In the manufacturing process described above, the bag body 101 is manufactured so that a plurality of sheets can be picked up from the two

packaging sheet materials

101A and 101B, but the bag body 101 is transported in a direction in consideration of efficient picking up. In general, a slit 105 is provided along the direction of conveyance. In addition, as shown in FIG. 13, when the shape of the storage portion 108 of the heat generating composition 106 in the bag body 101 is vertically long, the heat generating composition is inserted between the

packaging sheet materials

101A and 101B by the charging means (shooter) 111. Considering the ease of filling when filling 106, the bag body 101 is generally transported such that the length direction of the storage portion 108 (vertical direction in FIG. 13) is the transport direction. Therefore, when the shape of the storage portion 108 of the bag body 101 as shown in FIG. 13 is vertically long and the protruding portion 107 at the end of the bag body 101 exists in the length direction of the storage portion 108, this protrusion A slit 105 of the release sheet 104 is provided in the portion 107, and the protruding portion 107 is conveyed so as to peel downward. However, in this case, when the bag body 101 falls on the transport conveyor 115 by its own weight, the protruding portion 107 hits the transport conveyor 115. At this time, since the peeling sheet 104 is not adhered to the bag body 101 at the protruding portion 107, there arises a problem that the peeling sheet 104 is easily turned up and down by the slit 105. This is a problem peculiar to the disposable body warmer. In the disposable body warmer, the weight of the heat generating composition 106 enclosed in the bag body 101 is increased by the weight of the bag body 101. There is a reason that the impact at the time of dropping on 115 is large, and therefore the release sheet 104 is easily turned over. Further, the bag body 101 is obtained by heat-sealing the two

packaging sheet materials

101A and 101B in a state where the release sheet 104 is attached in advance to the surface of one packaging sheet material 101B via the adhesive layer 102. Although formed, the adhesive layer 102 located at the heat-sealed portion at the periphery of the bag body 101 has reduced adhesiveness due to heat-sealing, so when the bag body 101 falls on the conveyor 115, the release sheet There is a reason that 104 is easier to turn. Further, in the manufacturing process of the bag body 101, the shape of the bag body 101 is not flattened because the heat generating composition 106 in the storage section 108 is biased downward. 104 is easily peeled off from the surface of the bag body 101. Therefore, there is a reason that the release sheet 104 is more likely to be turned when the bag body 101 falls on the transport conveyor 115. For this reason, when the release sheet 104 is turned over from the bag body 101 and conveyed to the next process, the surface of the bag body 101 is pressed by a roller while the release sheet 104 is turned up. A trace of turning will remain, resulting in a defective appearance of the manufactured disposable body warmer.

In addition to the disposable body warmer 100 in which the direction in the length direction of the bag body 101 and the direction in the length direction of the storage portion 108 are the same as shown in FIG. This also occurs for the disposable body warmer 100 in which the length direction of the bag body 101 and the length direction of the storage portion 108 are different. Also in the disposable body warmer 100 of FIG. 16, in the manufacturing process, the bag body 101 is preferably transported so that the length direction of the storage portion 108 (vertical direction in FIG. 16) is the transport direction. If the protruding portion 107 of the end portion of the bag body 101 exists in the longitudinal direction of the storage portion 108, the slit 105 of the release sheet 104 is provided in the protruding portion 107, and The protruding portion 107 is conveyed so as to peel downward. Therefore, when the bag body 101 falls on the transport conveyor 115 by its own weight, the protruding portion 107 abuts against the transport conveyor 115, so that the release sheet 104 is easily turned over by being opened to the left and right by the slit 105.

Moreover, depending on the manufacturing method of the disposable body warmer, both

packaging sheet materials

101A and 101B are bent at substantially right angles (substantially L-shaped) and conveyed between the

lower heating rolls

112A and 112B and the punching device 113 in FIG. The punching device 113 is arranged as described above, and the punching device 113 may separate the individual bag bodies 101 by punching the

packaging sheet materials

101A and 101B from above and below at the portion of the bag body 101. In this case, since the bag body 101 punched from the

packaging sheet materials

101A and 101B falls due to its own weight onto the transport conveyor 115 arranged at the lower position, the protruding portion 107 does not hit the transport conveyor 115. There is no possibility that the release sheet 104 is opened to the left and right by the slit 105, but there is a problem that the release sheet 104 is opened to the left and right by the slit 105 and is easily turned when sealed in a non-breathable storage bag. .

This invention was made paying attention to the subject mentioned above, and it aims at providing the disposable warmer which the defect on an external appearance does not produce in the manufacturing process of a disposable warmer.

An object of the present invention is to enclose a heat generating composition that generates heat when it comes into contact with air, one side of which has air permeability, an adhesive layer provided on the other side of the bag, and the adhesive layer A release sheet provided on the other surface of the bag body so as to cover the bag body, the bag body having a projecting protrusion at least at one end and including the tip of the protrusion There is a non-adhesive region where the adhesive layer is not provided, and the release sheet is provided with a cut located on the non-adhesive region, and a plurality of the cuts are provided intermittently along the non-adhesive region. Achieved through disposable warmers.

Further, the object of the present invention is to enclose a heat generating composition that generates heat by contact with air, one side of which has air permeability, an adhesive layer provided on the other side of the bag, A release sheet provided on the other surface of the bag body so as to cover the adhesive layer, and the bag body has a projecting protrusion at least at one end, and the tip of the protrusion is The release sheet has a non-adhesive region in which the adhesive layer is not provided, and the release sheet is provided with a cut located on the non-adhesive region, and the cut is spaced from the periphery of the protrusion. It is also achieved by a single disposable body warmer that extends from the position along the non-adhesive region.

In the disposable body warmer having the above-described configuration, the heat generating composition is charged between two packaging sheet materials in which the bag body is conveyed substantially downward in the vertical direction and the release sheet is attached to one packaging sheet material. However, after the two packaging sheet materials are heat-sealed into a predetermined shape, the bag body is punched and separated from the two packaging sheet materials along the predetermined shape, and the conveyor is disposed below It is formed by dropping by its own weight on a table such as. Note that the term “substantially downward in the vertical direction” includes not only the vertical direction but also a direction tilted to about 30 degrees from the vertical direction, and further to about 90 degrees in a broad sense.

In a preferred embodiment of the disposable body warmer configured as described above, the cut is provided from a position at least 1 mm away from the periphery of the protrusion.

In a further preferred embodiment, the bag body has the non-adhesive region from the one end to the other end on the opposite side, and the total length of the notch extends the notch from the one end to the other end. It occupies 10% or more of the length of the virtual line.

In a further preferred embodiment, a plurality of the cuts are provided in a perforated shape.

In a more preferred embodiment, the protrusion is curved in a convex shape, and the curvature of the protrusion is a circle having a diameter R from the one end of the bag body to the other end on the opposite side. It is characterized by being set to be larger than the curvature of the arc.

In a more preferred embodiment, the curvature of the projecting portion is such that the length from the one end portion of the bag body to the other end portion on the opposite side is the major axis length D1, and the minor axis is the major axis length D1. It is characterized in that it is set to be equal to or larger than the curvature of the elliptical arc in the major axis direction of the ellipse whose ratio to the length D2 is 2.

According to the disposable body warmer of the present invention, it is possible to prevent the appearance defect from occurring in the manufacturing process.

It is a bottom view of the disposable body warmer concerning one embodiment of the present invention. It is a top view of the disposable body warmer of FIG. It is sectional drawing of the disposable body warmer of FIG. It is a top view of a bag. It is explanatory drawing explaining the curvature in the front-end | tip of the protrusion part of a bag. It is explanatory drawing explaining the preferable curvature in the front-end | tip of the protrusion part of a bag. In the disposable body warmer of FIG. 2, it is explanatory drawing which shows a state when peeling a peeling sheet from a bag. In the disposable body warmer of FIG. 2, it is the top view which showed the other modification of a notch | incision. In the disposable body warmer of FIG. 2, it is the top view which showed the other modification of a notch | incision. It is explanatory drawing explaining the virtual line of a notch. It is a top view of the disposable body warmer concerning other embodiments of the present invention. It is a top view of the disposable body warmer concerning other embodiments of the present invention. It is a top view of the disposable warmer of a prior art example. It is sectional drawing of the disposable body warmer of FIG. It is explanatory drawing which shows the manufacturing process of a disposable body warmer. It is a top view of the disposable warmer of a prior art example.

Hereinafter, embodiments of the disposable body warmer according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the disposable body warmer 1 according to the present embodiment includes a bag body 3 enclosing a heat generating composition 2 having one side air-permeable and generating heat by contact with air, An adhesive layer 4 provided on the other surface of the body 3 and a release sheet 5 provided on the other surface of the bag body 3 so as to cover the adhesive layer 4 are provided. It is a disposable body warmer of the so-called sticking type that is used by sticking it to. This type of disposable body warmer 1 is stored in an airtight storage bag (not shown) before use, taken out from the storage bag, peeled off the release sheet 5 from the bag body 3, and then the bag body 3 Can be applied to various parts of the body such as limbs, waist, back, abdomen, soles of the feet, shoulders, buttocks.

The exothermic composition 2 only needs to generate heat upon contact with air. For example, an oxidizable metal, activated carbon, water retention agent (wood powder, vermiculite, diatomaceous earth, perlite, silica gel, alumina, water-absorbing resin, etc. ), Metal salts (such as sodium chloride), and water, each of which contains an appropriate content, and a known composition conventionally used for disposable warmers can be used. The oxidizable metal is a metal that generates heat of oxidation reaction, and examples thereof include one or more powders and fibers selected from iron, aluminum, zinc, manganese, magnesium, and calcium. Among these, iron powder is preferable from the viewpoints of handleability, safety, manufacturing cost, storage stability, and stability. Examples of the iron powder include one or more selected from reduced iron powder and atomized iron powder. The disposable body warmer 1 is controlled so as to have desired heat generation conditions (maximum temperature, average temperature, heat generation duration, etc.) at the time of use by adjusting the components of the exothermic composition 2 described above. For example, the blending amount of the oxidizable metal in the exothermic composition 2 is preferably 30% to 80%, more preferably 40% to 70%, and further preferably 40% to 65%. In addition, since water, which is an essential component of the exothermic composition 2, has a reduced exothermic duration when the blending ratio is small, the blending ratio of water in the exothermic composition 2 is devised.

As shown in FIGS. 1 to 4, the bag body 3 is composed of a first packaging sheet material 30 and a second packaging sheet material 31 of the same shape, front and back. The peripheral edge is joined to the entire circumference using a known adhesive, or is joined by thermal fusion (heat sealing), thereby forming a bag having an accommodating portion 34 in which the heat generating composition 2 can be enclosed. ing.

The first packaging sheet material 30 has air permeability. As long as it has air permeability, the first packaging sheet material 30 may be a porous resin film, a resin film perforated with a needle, or a nonwoven fabric or a woven fabric. Further, the first sheet packaging material 30 may have a single layer configuration such as a resin film or a non-woven fabric, or may have a multi-layer configuration in which a resin film and a non-woven fabric are laminated. As a resin film, what is conventionally used as the bag 3 of disposable warmer 1 can be used, for example, polyethylene, polypropylene, polyester, polyamide, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyurethane, polystyrene, Examples include ethylene-vinyl acetate copolymer, polycarbonate, and hydrochloric acid rubber. Non-woven fabrics are also made of artificial materials such as polypropylene, nylon, vinylon, polyester, polyethylene terephthalate, rayon, acetate, acrylic, polyethylene, and polyvinyl chloride. The thing containing natural fibers, such as a fiber, cotton, hemp, silk, etc. can be illustrated. Moreover, paper etc. can be illustrated other than a nonwoven fabric.

The second packaging sheet material 31 has air permeability and may have a single-layer configuration of a resin film or a multilayer configuration of a resin film and a nonwoven fabric. Examples of the resin film include polyethylene, polypropylene, polyester, polyamide, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyurethane, polystyrene, ethylene-vinyl acetate copolymer, polycarbonate, hydrochloric acid rubber and the like. Nonwoven fabrics can also be exemplified by artificial fibers such as polypropylene, nylon, vinylon, polyester, polyethylene terephthalate, rayon, acetate, acrylic, polyethylene, and polyvinyl chloride, and natural fibers such as cotton, hemp, and silk. Moreover, paper etc. can be illustrated other than a nonwoven fabric. The adhesive layer 4 is provided on the surface of the second packaging sheet material 31, and the adhesive layer 4 is covered with the release sheet 5 until the bag 3 is stored in a storage bag and used.

The bag body 3 has a projecting protrusion 32 at least at one end. The shape of the protrusion 32 may be any of a shape in which the tip T is convexly curved and protrudes in a convex shape, or a shape in which the tip T protrudes in a sharp triangular shape as in this embodiment. Good. Here, the convexly curved shape is, for example, a tangential continuous shape in which a straight line (or a curve) and a curved line are smoothly connected so that the direction of the tangent is the same at the connection point. The curved line may have a continuous curvature shape in which the tangent directions are the same at the connection point, and the curvature is continuous so that the curvature is continuous, or other curved shapes. In addition, the shape with a sharp tip T is, for example, a straight line (or curved line) and a straight line (or curved line) that are continuous at the connection point, but are not tangentially continuous and / or continuous in curvature. It is a shape that can be clearly recognized by the corners. Examples of the shape having the projecting portion 32 at least at one end include a rhombus shape, a polygonal shape such as a triangle and a pentagon, an elliptical shape, a tongue shape, a heart shape, and a heel shape. However, the present invention is not limited to this, and various shapes can be used. The bag body 3 of the present embodiment is formed in a shape in which the center position of one side edge (left side in FIG. 4) of the ellipse in the width direction (left and right direction in FIG. 4) is gently recessed inward. Both the bag body 3 and the storage portion 34 are vertically long (the direction of the length direction of the bag body 3 is the same as the direction of the length direction of the storage portion 34), and the length direction of the vertically long storage portion 34 (the top and bottom in FIG. 4)

Projections

32 and 33 that are curved in a convex shape of the bag body 3 are present at both ends of the direction).

When the protrusion 32 has a sharp shape with a sharp tip T, or when the tip T has a curved shape, the protrusion 32 has a sharp curve with a large curvature (degree of bending). The effect by invention is especially exhibited. As a preferable curvature of the projecting portion 32 curved in a convex shape, the length from one end portion of the bag body 3 (tip T of the projecting portion 32) to the other end portion on the opposite side as shown in FIG. The curvature is set to be larger than the curvature of the arc of the circle (virtual circle) C1. Here, the other end opposite to one end of the bag 3 (the tip T of the protruding portion 32) is that the perpendicular perpendicular to the tangent L at the tip T of the protruding portion 32 is the tip T of the protruding portion 32. The point which cross | intersects the bag body 3 on the opposite side is pointed out, and the front-end | tip T of the protrusion part 33 is the other end part of the bag body 3 in this embodiment. Moreover, as a more preferable curvature of the projecting portion 32 that curves in a convex shape, as shown in FIG. 6, the other end portion (the projecting portion 33 of the projecting portion 33) on the opposite side from one end portion (tip T of the projecting portion 32) of the bag body 3. The length to the tip T) is the length D1 of the major axis, and the major axis direction protrudes in a convex shape of an ellipse (virtual ellipse) C2 whose ratio of the major axis length D1 to the minor axis length D2 is 2. Is set to a curvature equal to or greater than the curvature of the elliptical arc (tip T1). The curvature of the projecting portion 32 that curves in a convex shape refers to the degree of curvature of the curve at the tip T that is the most protruding point in the projecting portion 32, and the curve extending from the tip T to the left and right is the virtual circle described above. It is preferably a steeper curve or a curve of the same degree as the arc of C1 or the ellipse arc at a predetermined position of the virtual ellipse C2.

As shown in FIGS. 2 to 4, the adhesive layer 4 is made of an acrylic adhesive having an adhesive action on the skin and clothes, a urethane adhesive, a silicone adhesive, a rubber adhesive, a pine resin, or the like. It is formed by applying to the surface of the sheet material 31. The pressure-sensitive adhesive is preferably applied so that the thickness of the pressure-sensitive adhesive layer 4 is about 10 μm to 300 μm. The adhesive layer 4 is provided on both side edges in the width direction of the bag 3 so that the non-adhesive region 6 is provided therebetween. The non-adhesive region 6 is formed by, for example, not applying an adhesive only to the portion of the surface of the second sheet material 31, or after forming the adhesive layer 4 once, a non-adhesive substance is applied to the adhesive layer. It can be formed by coating on 4. The non-adhesive region 6 is provided at the center position in the width direction of the bag 3 and includes the other end (projecting) on the opposite side from one end (projecting 32) of the bag 3 so as to include the tips T of the projecting

portions

32 and 33. Part 33). By providing the non-adhesive region 6 in this manner, the release sheet 5 can be easily peeled from the bag body 3 from the non-adhesive region 6. The length (lateral width) of the non-adhesive region 6 in the width direction is preferably about 3 mm to 100 mm.

The release sheet 5 can be formed, for example, by laminating paper, polyethylene terephthalate, polyethylene or the like alone or in combination, and applying silicon processing to the surface that covers these adhesive layers 4. As shown in FIGS. 2 to 4, the release sheet 5 is formed in the same shape as the second packaging sheet material 31 so as to cover the entire surface of the second packaging sheet material 31.

The release sheet 5 is provided with one or a plurality of cuts 7 which are located on the non-adhesive region 6 and extend along the non-adhesive region 6. In the present embodiment, the plurality of cuts 7 are provided on the opposite side from the one end of the release sheet 5 (the portion covering the protruding portion 32 of the bag 3) (the portion covering the protruding portion 33 of the bag 3). Is provided intermittently along the non-adhesive region 6, and the position of the cut 7 in the width direction (left-right direction in FIG. 4) in the release sheet 5 is the width in the bag 3 at the tip T of the

protrusions

32, 33. It coincides with the position in the direction (left-right direction in FIG. 4). When the release sheet 5 is provided with the cuts 7, as shown in FIG. 7, the release sheet 5 can be divided into two by separating the release sheet 5 left and right by the cuts 7. Then, when the release sheet 5 is divided into two, the side edges facing each other of the release sheet 5 divided into two are not adhered to the bag body 3 by the non-adhesive region 6. The release sheet 5 divided into two can be easily turned up from the bag body 3 at the side edge, and can be peeled off from the bag body 3 separately. In addition, the some notch 7 provided in the peeling sheet 5 can divide the peeling sheet 5 easily by setting it as the perforation shape which shortened the space | interval between the adjacent notches 7 like this embodiment. . However, the plurality of cuts 7 do not have to have the same length, and a long cut 7 or a short cut 7 may be mixed.

When the release sheet 5 is provided with a plurality of cuts 7, the

cuts

7A and 7B on both sides of the plurality of cuts 7 are the peripheral edges of the

protrusions

32 and 33 of the bag 3 (the tip T in this embodiment). ) May be provided so as to extend from the position of (), but preferably provided so as to extend from a position spaced from the position of the tip T. When the bag body 3 has a shape having the protruding

portions

32 and 33 as in the present embodiment, and the protruding

portions

32 and 33 are present at the tip of the longitudinal storage portion 34 in the length direction, the related art As described in, when the disposable body warmer 1 is manufactured, when the bag body 3 is transported so as to fall on the transport conveyor, the projecting portion on the lower side in the transport direction of the bag body 3 (projecting in this embodiment) The tip T of the portion 32 is abutted against the conveyor. At this time, the cut 7A of the release sheet 5 is provided at a distance from the position of the tip T of the protrusion 32 of the bag body 3, and the cut 7A is cut at the tip of the release sheet 5 covering the tip T of the protrusion 32. If there is not, it is prevented that the front end portion of the release sheet 5 is opened to the left and right by the cut 7A and is easily turned over. Therefore, the appearance of the bag body 3 that falls on the transport conveyor and is transported to the next process can be improved, and the bag 3 is manufactured even if the surface of the bag body 3 is pressed by a roller in the next process. It is possible to prevent appearance defects from occurring in the disposable body warmer 1. In this case, as shown in FIG. 2, the cut 7A is at least 1 mm away from the position of the tip T of the projecting portion 32 of the bag body 3 and a position separated in the length direction of the cut 7 (vertical direction in FIG. 4). If it is provided so as to extend from the above, it is preferable because the above-described peeling of the release sheet 5 can be effectively prevented. The

cuts

7A and 7B do not necessarily need to be provided at a distance from the positions of the tips T of the two projecting

portions

32 and 33 of the bag body 3, and either one (below the bag body 3 in the transport direction). If the notch 7A is provided at a distance from the position of the tip T of the protrusion 32, the notch 7B is provided so as to extend from the position of the tip T with respect to the tip T of the other protrusion 33. May be. In addition, when the bag body 3 is provided with only one protrusion 32, a plurality of protrusions 32 are extended along the non-adhesive region 6 from a position spaced from the position of the tip T of the protrusion 32. A notch 7 is provided.

Further, among the plurality of cuts 7 of the release sheet 5, as shown in FIG. 8, the

cuts

7A and 7B on both sides are provided so as to extend from the positions of the tips T of the protruding

portions

32 and 33 of the bag body 3. In this case, it is preferable that the length d2 of the

cuts

7A and 7B is 10 mm or less. If the lengths d2 of the

cuts

7A and 7B are 10 mm or less, as described above, the bag body 3 falls on the transport conveyor when the disposable body warmer 1 is manufactured, and the tips T of the protruding

portions

32 and 33 of the bag body 3 Even if it hits the conveyor, the leading edge of the release sheet 5 is not greatly opened to the left and right by the

cuts

7A and 7B, and therefore the folded state is maintained because a crease is formed on the release sheet 5. It is prevented. Therefore, the appearance of the bag 3 that falls on the conveyor and is transported to the next process can be improved.

In addition, the cut | notch 7 does not need to be provided with two or more in the peeling sheet 5, and as shown in FIG. 9, only one may be provided. In this case, at least one of the two

protrusions

32 and 33 of the bag body 3 (from the lower side of the bag body 3 in the transport direction) is spaced from the position of the tip T of the protrusion 32. It is provided so as to extend along the non-adhesive region 6. Similarly, the distance d1 from the position of the tip T of the protruding portion 32 of the bag 3 of the notch 7 may be at least 1 mm or more. Regarding the other protrusion 33 of the bag body 3, the cut 7 may be spaced from the position of the tip T or may extend from the position of the tip T. Further, when only one protrusion 32 is provided on the bag body 3, the protrusion 3 extends along the non-adhesive region 6 from a position spaced from the position of the tip T of the protrusion 32. A notch 7 is provided.

One or a plurality of cuts 7 have a total length (when there are a plurality of cuts 7, the total length of the plurality of cuts 7), as shown in FIG. An imaginary line L extending from the projecting portion 32 of the bag body 3 to the other end portion (projecting portion 33 of the bag body 3), that is, one end portion of the release sheet 5 (the projecting portion 32 of the bag body 3) to the other end portion. It is preferably provided so as to occupy 10% or more of the length of the imaginary line L formed up to (projecting portion 33 of bag 3), and more preferably provided so as to occupy 10% or more and 99% or less. The release sheet 5 can be divided into two by the notch 7 by setting the entire length of the notch 7 to 10% or more of the length of the imaginary line and providing the release sheet 5 with a cut portion by the notch 7 to some extent. Can be easily peeled off from the bag 3. Further, when the release sheet 5 is attached to the second packaging sheet material 31 of the bag body 3, the air mixed between the release sheet 5 and the second packaging sheet material 31 is effectively discharged from the cut 7. Can do. Therefore, since it can affix neatly to the 2nd packaging sheet material 31 without producing wrinkles etc. in the peeling sheet 5, the external appearance of the bag body 3 can be made favorable. Moreover, the peeling which may arise at the time of manufacture of the disposable warmer 1 mentioned above by making the full length of the notch 7 into 99% or less of the length of the virtual line L, and providing the non-cut | disconnecting part in which the notch 7 is not provided in the peeling sheet 5 to some extent. The turning of the sheet 5 can be effectively suppressed. In addition, when the above-described disposable body warmer 1 is manufactured, a certain load is applied to the release sheet 5 so that the cut 7 is enlarged, and even the non-cut portion of the release sheet 5 is cut so that the release sheet 5 is completely cut. Can be prevented.

Since the manufacturing method of the disposable body warmer 1 having the above-described configuration is the same as the manufacturing method of the conventional disposable body warmer 100 shown in FIG. 15, detailed description is omitted here, but the surface of the second packaging sheet material 32 is previously provided. The release sheet 5 attached via the adhesive layer 4 is provided with one or a plurality of cuts 7. Between two first and second

packaging sheet materials

30 and 31 conveyed between a pair of upper heating rolls 110A and 110B (shown in FIG. 15), charging means (shooter) 111 (shown in FIG. 15) The heat generating composition 2 is enclosed in the bag body 3 by heat-sealing the

packaging sheet materials

30 and 31 into the desired shape of the bag body 3 while the heat generating composition 2 is being introduced. Thereafter, the

packaging sheet materials

30 and 31 are supplied to lower heating rolls 112A and 112B (shown in FIG. 15) positioned below, and the bag body 3 is again applied to the

packaging sheet materials

30 and 31 by the lower heating rolls 112A and 112B. After increasing the heat-sealing strength of the bag 3 by heat-sealing along the shape, the

packaging sheet materials

30, 31 are supplied to a punching device 113 (shown in FIG. 15) positioned below, The bag body 3 is separated from the

packaging sheet materials

30 and 31 by individually punching the bag body 3 from the

packaging sheet materials

30 and 31. The bag body 3 separated from the

packaging sheet materials

30 and 31 falls on the transport conveyor 115 (shown in FIG. 15) and is transported to the next process. In the next step, the upper surface of the bag body 3 is pressed with a roller (not shown) or the like in order to smooth the exothermic composition 2 enclosed in the bag body 3, whereby the disposable body warmer 1 is manufactured. The disposable body warmer manufactured in this way is enclosed in a non-breathable storage bag by hand or using a machine, and stored in an airtight state in the storage bag.

According to the disposable body warmer 1 having the above-described configuration, in the above-described manufacturing process, the bag body 3 has the protruding portion 32 at least at one end, and the protruding portion 32 is on the lower side in the transport direction of the bag body 3. When the bag body 3 is transported, when the bag body 3 falls on the transport conveyor, the tip T of the protruding portion 32 hits the transport conveyor. At this time, the front end portion covering the front end T of the protruding portion 32 of the release sheet 5 is not adhered to the bag body 3, but the cut 7 is not provided or even if the cut 7 is provided, it is slightly long. Therefore, it can prevent that the front-end | tip part of the peeling sheet 5 opens right and left and turns up easily. Therefore, in the next step, even if the surface of the bag body 3 is pressed with a roller in order to smooth the exothermic composition 2, the release sheet 5 is bonded to the bag body 3 without leaving a turn-up mark. There is no appearance defect in the disposable warmer 1.

Further, the total length of the cut 7 of the release sheet 5 is set so as to occupy 10% or more of the length of the imaginary line L obtained by extending the cut 7 from one end portion (tip portion) of the release sheet to the other end portion. Thus, when the release sheet 5 is attached to the second packaging sheet material 31 of the bag body 3, the air mixed between the release sheet 5 and the second packaging sheet material 32 is effectively discharged from the cut 7. can do. Therefore, since it can be neatly attached to the second packaging sheet material 32 without causing wrinkles or the like on the release sheet 5, the appearance of the bag body 3 can be improved.

Further, by providing the release sheet 5 with a plurality of cuts 7 in a perforated shape, the release sheet 5 can be easily divided into two on the right and left sides by the plurality of cuts 7. Therefore, the peeling sheet 5 divided into two can be easily peeled off from the bag body 3 by turning it up from the bag body 3 in the non-adhesive region 6 of the bag body 3.

As mentioned above, although 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 of this invention. For example, in the above embodiment, the non-adhesive region 6 extends from one end portion of the bag body 3 to the other end portion, but does not necessarily extend to the other end portion.

Moreover, in the said embodiment, the position of the width direction (left-right direction of FIG. 4) in the peeling sheet 5 of the notch 7 is the width direction (left-right direction of FIG. 4) in the bag body 3 of the front-end | tip T of the

protrusion parts

32 and 33. Although it coincided with the position, the position of the notch 7 and the position of the tip T of the

protrusions

32 and 33 may be shifted. That is, one or a plurality of cuts 7 may be provided along the non-adhesive region 6 at a position shifted left and right from the position of the tip T of the

protrusions

32 and 33. In this case, the distance d1 is the distance from the position of the periphery of the notch 7A (shown in FIG. 2) or the notch 7 (shown in FIG. 9) shifted from the tip T of the protrusion 32 of the bag body 3 to the left and right. Become. Even in this case, the same effect as the above embodiment is achieved, and even when the disposable body warmer 1 is manufactured, even if the bag body 3 falls on the transport conveyor and the tip T of the protruding portion 32 hits the transport conveyor, the peeling is performed. It can prevent that the front-end | tip part of the sheet | seat 5 opens right and left and turns up easily. Therefore, in the next step, even if the surface of the bag body 3 is pressed with a roller in order to smooth the exothermic composition 2, the release sheet 5 is bonded to the bag body 3 without leaving a turn-up mark. There is no appearance defect in the disposable warmer 1.

Moreover, in the said embodiment, although the bag body 3 is provided with only one storage part 34 of the heat-generating composition 2, the bag body 3 may be provided with two or more storage parts 34 partitioned from each other. . For example, as shown in FIG. 11, a plurality (two in the illustrated example) of the vertically long storage portions 34 may be provided side by side in the width direction of the bag 3 with respect to the vertically long bag 3. Further, as shown in FIG. 12, a plurality (four in the illustrated example) of vertically long storage portions 34 may be provided side by side in the width direction of the bag 3 with respect to the horizontally long bag 3. The disposable body warmer 1 of FIG. 12 is different from the disposable body warmer 1 shown in FIGS. 1 and 11 in which the length direction of the bag body 3 and the length direction of the storage portion 34 are the same. The direction in the length direction of the body 3 is different from the direction in the length direction of the storage portion 34. Also in the disposable body warmer 1 of FIG. 12, in the manufacturing process, the bag 3 is transported such that the length direction of the storage portion 34 (vertical direction in FIG. 12) is the transport direction. Therefore, when the shape of the storage portion 34 is vertically long and the protruding portion 32 at the end of the bag body 3 exists in the longitudinal direction of the storage portion 34, the protruding portion 32 is conveyed so as to peel downward. Therefore, when the bag body 3 falls on the transport conveyor, the tip T of the protrusion 32 hits the transport conveyor. However, by providing the cut 7 in the release sheet 5 in the same manner as in the above embodiment, it is possible to prevent the front end of the release sheet 5 from opening left and right and turning up easily.

DESCRIPTION OF SYMBOLS 1 Disposable body warmer 2 Exothermic composition 3 Bag body 4 Adhesive layer 5 Release sheet 6 Non-adhesive area 7

Notch

32,33 Projection part L Virtual line T Tip

Claims

A heat generating composition that generates heat by contact with air is enclosed, and one side has a breathable bag,
An adhesive layer provided on the other side of the bag,
A release sheet provided on the other surface of the bag so as to cover the adhesive layer,
The bag body has a non-adhesive region in which the adhesive layer is not provided so as to include a convex protrusion at least at one end and include the tip of the protrusion,
The release sheet is provided with a cut located on the non-adhesive region,
A disposable body warmer provided with a plurality of the cuts intermittently along the non-adhesive region.
A heat generating composition that generates heat by contact with air is enclosed, and one side has a breathable bag,
An adhesive layer provided on the other side of the bag,
A release sheet provided on the other surface of the bag so as to cover the adhesive layer,
The bag body has a non-adhesive region in which at least one end has a convex protrusion and the adhesive layer is not provided so as to include the tip of the protrusion,
The release sheet is provided with a cut located on the non-adhesive region,
One of the notches is a disposable body warmer provided so as to extend along the non-adhesive region from a position spaced from the periphery of the protrusion.
The disposable body warmer according to claim 1 or 2, wherein the cut is provided from a position at least 1 mm away from a peripheral edge of the protrusion.
The bag body has the non-adhesive region from the one end to the other end on the opposite side,
The disposable body warmer according to any one of claims 1 to 3, wherein a total length of the cut occupies 10% or more of a length of an imaginary line obtained by extending the cut from the one end to the other end.
The disposable body warmer according to any one of claims 1 to 4, wherein a plurality of the cuts are provided in a perforated shape.
The protrusion is curved in a convex shape,
The curvature of the protrusion is set to be larger than the curvature of a circular arc of a circle having a diameter R from the one end of the bag body to the other end on the opposite side. Disposable body warmer in any one.
The curvature of the projecting portion is defined by the length from the one end portion of the bag body to the other end portion on the opposite side as the major axis length D1, and the ratio of the major axis length D1 to the minor axis length D2. The disposable body warmer according to claim 6, wherein the disposable body warmer is set to be equal to or larger than the curvature of the elliptical arc in the major axis direction of the ellipse being 2.