JP2005058425A - Disposable hand-warmer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable hand-warmer capable of printing a fine picture or pattern in a plurality of colors clearly and keeping a clear printed state without impairing a design performance and an advertisement performance. <P>SOLUTION: In the hand-warmer, an exothermic composition, which generates heat by oxidation under the presence of air, is enclosed inside a flat bag, and the flat bag is housed inside an airtight bag. One or both surfaces of the flat bag are made of a synthetic resin laminated film containing an aluminum vapor deposited layer or an opal synthetic resin layer and the surface of the film is printed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a disposable body warmer. More specifically, the present invention relates to a disposable body warmer that can clearly print multicolored fine patterns and patterns and can maintain a clear print state without impairing design and advertising.

  Conventionally, a disposable body warmer in which a heat generating composition that generates heat in the presence of air is contained in a breathable storage bag (inner bag) and the inner bag is packaged in a non-breathable bag (outer bag) is known. . Such warmers have been proposed for various parts of the body, such as the soles of the feet, shoulders, and buttocks, as well as those that warm the limbs and lower back. In order to warm up, an adhesive layer provided on the inner bag surface has been proposed.

  Such a disposable body warmer starts to generate heat by opening the outer bag and bringing the exothermic composition in the inner bag into contact with air, and maintains a warm state for a predetermined time. Considering the feeling of use or touch, a soft nonwoven fabric having a predetermined strength is used as the material of the inner bag (see, for example, Patent Document 1).

JP-A-9-75387

  However, although the nonwoven fabric is excellent in use feeling or touch feeling, it has a rough surface and is somewhat fluffy, so only a single color rough pattern or pattern can be printed, which is insufficient in design and advertising. It was something. In addition, when the hand or the like touches the pattern or the pattern, a part of the pattern or the pattern may be peeled off relatively easily.

  On the other hand, when a synthetic resin film is used instead of the nonwoven fabric, it is possible to clearly print a multicolored fine pattern or pattern and to maintain a clear print state. However, when a synthetic resin film is used, since the color of the exothermic composition having a black color is usually transparent, the design and advertising properties are impaired.

  In light of the above circumstances, the present invention is a disposable that can clearly print fine patterns and patterns of multiple colors and can maintain a clear printing state without impairing design and advertising properties. The purpose is to provide Cairo.

  The disposable body warmer of the present invention is a body warmer in which a heat generating composition that generates heat in the presence of air is enclosed in a flat bag, and the flat bag is housed in an airtight bag. One or both sides of the bag are made of a synthetic resin laminated film including an aluminum vapor-deposited layer or a milky white synthetic resin layer, and the surface of the film is printed.

  It is preferable that both surfaces of the flat bag are made of a synthetic resin laminated film including an aluminum vapor deposition layer or a milky white synthetic resin layer.

  Moreover, it is preferable that both surfaces of the said flat bag consist of a synthetic resin laminated film containing an aluminum vapor deposition layer.

  Furthermore, it is preferable to make fine holes in the synthetic resin laminated film.

  On the other hand, it is preferable that one side of the flat bag is composed of a synthetic resin laminated film including an aluminum vapor deposition layer or a milky white synthetic resin layer, and the other is composed of a porous synthetic resin film, an adhesive layer, and a release paper.

  Furthermore, it is preferable that one side of the flat bag is made of a synthetic resin laminated film including an aluminum vapor deposition layer.

  According to the disposable body warmer of the present invention, since one or both sides of the inner bag are made of a synthetic resin laminated film, it is possible to clearly print multicolored fine patterns and patterns, and to improve design and advertising At the same time, a clear print state can be maintained.

  Moreover, in the synthetic resin laminated film of the aluminum vapor-deposited layer or the milky white synthetic resin layer, the amount of air perforated holes (hole size) due to the shrinkage rate of each synthetic resin can be kept constant. A layer is more preferred.

  Hereinafter, the disposable body warmer of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a cross-sectional explanatory view of an embodiment of the disposable body warmer of the present invention, FIGS. 2 and 3 are cross-sectional explanatory views of a synthetic resin laminated film used for the disposable body warmer in the present invention, and FIG. 4 is a disposable body warmer of the present invention. It is a plane explanatory drawing of the inner bag, Comprising: It is a plane explanatory drawing of the lower surface in FIG.

  In FIGS. 1 and 4, reference numeral 1 denotes a flat air-permeable inner bag having a vent hole or a group of fine holes, and at least a part of the inner bag 1 is a gas-permeable surface. That is, one surface (the lower surface in FIG. 4) may be an air permeable surface, and the other surface may be a non-air permeable surface, or both surfaces may be air permeable surfaces. Furthermore, a part of one side may be a breathable surface and the rest may be a non-breathable surface.

  The magnitude | size of the inner bag 1 is not specifically limited in this invention, What is necessary is just to select suitably according to various uses. In addition, the shape is not limited to a rectangle, and other shapes such as a circle, an ellipse, a tongue piece shape, and a heart shape can also be adopted.

  The air permeability of the inner bag 1 is not particularly limited, but the size of the perforated hole may be as long as the contents do not spill, and is, for example, about 0.5 mm or less. Is within the range where heat can be generated, and is not particularly limited in the present invention.

  The disposable body warmer of the present invention is characterized in that one or both sides of the inner bag 1 is composed of a synthetic resin laminated film 6 including an aluminum vapor-deposited layer or a milky white synthetic resin layer, and the surface thereof is appropriately printed. . In the present embodiment, printing is performed on the lower surface in FIG.

  The synthetic resin laminated film is produced by laminating different types of synthetic resins. The reason why different types of synthetic resins are laminated is to improve the processing suitability during the manufacture of warmers. As the synthetic resin, for example, nylon, polyethylene, polypropylene and the like are used. Although the laminated film itself has airtightness, in this embodiment, air permeability is imparted to the film by forming minute holes. 30-200 micrometers is preferable and, as for the thickness of the whole laminated film, 50-100 micrometers is more preferable. When the thickness is less than 30 μm, the film strength is lowered, and the contents tend to spill and the contents are spilled. When the thickness exceeds 200 μm, the flexibility of the film is lowered, and when used as a warmer, the feeling of use tends to be impaired.

  The milky white synthetic resin layer is preferably milky white polyethylene in terms of cost and processability. This resin layer is laminated on the synthetic resin laminated film by a method such as extrusion lamination or dry lamination, and the thickness is preferably 5 to 100 μm, more preferably 10 to 50 μm. If the thickness is less than 5 μm, the contents tend to be seen through, and if it exceeds 100 μm, processing suitability and cost tend to be problems.

  The cross section of the synthetic resin laminated film 6 is shown in FIGS. FIG. 2 is an example in the case of including an aluminum vapor deposition layer, and represents a synthetic resin laminated film 6 including a nylon layer 7, a polypropylene or polyethylene layer 8 on which aluminum is vapor deposited, and a polyethylene layer 9. FIG. 3 shows an example of a case where a milky white synthetic resin layer is included, and shows a synthetic resin laminated film 6 comprising a nylon layer 7, a milky white polyethylene layer 10 and a polyethylene layer 9 (both FIGS. 2 and 3 show the nylon layer 7 side). The inner bag surface, the polyethylene layer 9 side shows the inside of the inner bag). In the present invention, the color of the exothermic composition 2 that usually has a black color is not transparent due to the aluminum vapor-deposited layer or the synthetic resin layer, so that the design and advertising properties are not impaired.

  The inner bag 1 can be made of a synthetic resin laminated film including an aluminum vapor-deposited layer or a milky white synthetic resin layer on both sides, but is produced with a synthetic resin laminated film containing an aluminum vapor-deposited layer or a milky white synthetic resin layer on one side. This surface can also be made of a conventionally used nonwoven fabric, a porous synthetic resin film, or the like. Further, one side can be made of a synthetic resin laminated film including an aluminum vapor-deposited layer or a milky white synthetic resin layer, and the other side can be a synthetic resin laminated film only. Especially, it is preferable that it is a synthetic resin laminated | multilayer film which both surfaces have an aluminum vapor deposition layer or a milky white synthetic resin layer at the point which can print on both surfaces, without the heat-generating composition seeping through on both surfaces.

  Moreover, in the synthetic resin laminated film of the aluminum vapor-deposited layer or the milky white synthetic resin layer, the amount of air perforated holes (hole size) due to the shrinkage rate of each synthetic resin can be kept constant. A layer is more preferred.

  A sealant layer (not shown) for fixing the inner bags 1 to each other is provided on the outer peripheral portion of the inner bag 1, and this sealant layer is made of, for example, an ethylene-vinyl acetate copolymer, EMMA, or a metallocene catalyst. It is made of polyethylene or the like polymerized or copolymerized by a single site catalyst.

  The contents of the printing include all kinds of designs including various animals and characters, patterns, product names, company names, house marks, usage instructions, and the like, and are not particularly limited in the present invention. Moreover, a conventionally well-known method is employable as a printing method to a synthetic resin laminated film. In the present invention, since printing is performed on the synthetic resin laminated film, it is possible to realize fine patterns and patterns almost the same as printing on ordinary paper, and it is also possible to easily realize multicolor printing as well as single color. . For this reason, it is possible to obtain a warmer that is excellent in design and advertisement.

  Inside the inner bag 1, a heat generating composition 2 that oxidizes and generates heat in the presence of air is enclosed, and the inner bag 1 is housed in an airtight outer bag 3.

  Examples of the exothermic composition 2 enclosed in the inner bag 1 include metal powder such as iron powder, activated carbon, water, water retention agent (wood powder, vermiculite, diatomaceous earth, perlite, silica gel, alumina, water-absorbing resin, etc.), salt Although what consists of etc. can be used, it is not limited to these.

  The outer bag 3 is made of a nonporous film such as polyethylene or polypropylene.

  Further, in this embodiment, in order to make it easier and simpler to attach the body warmer to the human body, normal adhesiveness is applied to one surface (upper surface in FIG. 1) of the inner bag 1 made of the porous synthetic resin film. A pressure-sensitive adhesive layer 4 made of a substance is formed, and a release paper 5 is provided on the pressure-sensitive adhesive layer 4. The pressure-sensitive adhesive layer 4 may be provided on one entire surface of the inner bag 1 or may be partially provided so as to form an appropriate pattern such as a striped pattern, a lattice pattern, or a polka dot pattern.

  The disposable warmer of the present invention may be a so-called sticking type warmer having a pressure-sensitive adhesive layer, or may be a type of warmer that does not have a pressure-sensitive adhesive layer and can be used by hand. .

  As a preferred form of the warmer, one surface of the inner bag is made of a nylon film having a thickness of 15 μm and an aluminum-deposited polypropylene layer having a thickness of 20 μm, and the other is made of a porous film made of polyethylene having a thickness of 30 μm. ing. Furthermore, the latter is provided with a 0.1 mm thick adhesive layer and release paper made of a rubber-based adhesive substance. In this inner bag, iron powder, activated carbon, sodium chloride, a polymer absorbent, and water are enclosed as a heat generating composition, and the outer bag is made of a non-breathable film having a thickness of about 50 μm.

It is sectional explanatory drawing of one Embodiment of the disposable body warmer of this invention. It is a section explanatory view of a synthetic resin lamination film containing an aluminum vapor deposition layer. It is a section explanatory view of a synthetic resin lamination film containing a milky white synthetic resin layer. It is plane explanatory drawing of the inner bag of the disposable body warmer of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inner bag 2 Exothermic composition 3 Outer bag 4 Adhesive layer 5 Release paper 6 Synthetic resin laminated film 7 Nylon layer 8 Polypropylene or polyethylene layer which vapor-deposited aluminum 9 Polyethylene layer 10 Milky white polyethylene layer

Claims (6)

A heat generating composition that oxidizes and heats in the presence of air is enclosed in a flat bag, and the flat bag is stored in an airtight bag, wherein one or both sides of the flat bag are A disposable body warmer comprising a synthetic resin laminated film including an aluminum vapor deposition layer or a milky white synthetic resin layer, and the surface of the film is printed. The disposable body warmer of Claim 1 which consists of a synthetic resin laminated film in which both surfaces of the said flat bag contain an aluminum vapor deposition layer or a milky white synthetic resin layer. The disposable body warmer according to claim 1 or 2, wherein both surfaces of the flat bag are made of a synthetic resin laminated film including an aluminum vapor deposition layer. The disposable body warmer according to claim 1, 2, or 3, wherein fine holes are formed in the synthetic resin laminated film. The disposable body warmer according to claim 1, wherein one side of the flat bag is made of a synthetic resin laminated film including an aluminum vapor-deposited layer or a milky white synthetic resin layer, and the other side is made of a porous synthetic resin film, an adhesive layer, and release paper. The disposable body warmer according to claim 5, wherein one side of the flat bag is made of a synthetic resin laminated film including an aluminum vapor deposition layer.

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