JP2006158689A - Disposable body warmer packaging material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable body warmer packaging material which has a form that a content does not generate heat even when the packaging form of the disposable body warmer is changed from double packaging to single packaging, keeps the content wrapped with face and back resin films in particular, and comprises many micropores to the extent not to leak the content in the back film. <P>SOLUTION: The disposable body warmer packaging material is prepared by sealing the back side with the back film after filling the content such as a charcoal, iron powder or water absorbing material on the face film suitably formed to a tray shape, bag shape or the like. The face film (11) is made from a barrier film having a sealant layer on the inner face. The back film (12) is constituted of an easy peel film or the like. The disposable body warmer packaging material is configured to seal the face film on the back film by heat seal after filling the content (30), and many micropores (15) for incorporating open air are disposed on the back film. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a foldable disposable warmer wrapping material that enables single wrapping by wrapping a conventional wrapping double wrapping method.

  Conventional disposable body warmers are designed to prevent heat generation by blocking the body of the body warmed by the contents of charcoal, iron powder, water-absorbing material, etc., and the outside air, in a body packaging bag made of paper or resin fiber. It is configured with an outer bag. That is, it is known that the body of the warmer filled with the contents is distributed in a double packaging form in an outer bag.

  In the method of using the double-packed disposable body warmer, the body body is taken out from the outer bag so that oxygen in the air reacts with the contents to generate heat. In addition, by manually holding the body of the warmer in order to promote heat generation, heat is generated more quickly through the fibers of the bag of the main body that is thinly mixed with the contents.

Patent literature is described below.
JP 2002-345875 A JP 2002-360624 A Japanese Patent Application Laid-Open No. 07-194642

  However, the conventional disposable body warmer requires an outer bag for preventing heat generation of the main body, and this outer bag becomes unnecessary during use and becomes garbage. Furthermore, the double wrapping of the inner bag (the body of the warmer) and the outer bag has also caused the packaging material cost to increase.

  Therefore, the present invention has been made to solve the above-described problems, and even if the packaging form of the disposable body warmer is changed from double packaging to single packaging, the contents do not generate heat. A disposable body warmer packaging material is provided in which a large number of micropores are provided in the backside film so that the contents do not leak, and the backside is folded in two with the back side inside. is there.

  Claim 1 of the present invention is a disposable body warmer formed by filling a surface film suitably formed into a tray shape or bag shape with contents such as charcoal, iron powder, water-absorbing material, etc., and then sealing the back side with a back film. A packaging material, wherein the surface film (11) is made of a barrier film having a sealant layer on the inner surface, the back film (12) is made of an easy peel film or the like, and the contents (30) After filling, it is a disposable warmer packaging material comprising a structure in which the bottom of the surface film is sealed with a back film, and the back film is provided with a number of micropores (15) for taking in outside air.

Claim 2 is the disposable body warmer packaging material according to claim 1,
The back film (12) is slightly larger than the surface film (11) formed in a tray shape, a bag shape or the like, and is provided with blank portions (12a, 12a) around the surface film. It is.

Claim 3 is the disposable body packaging material according to claim 1 and claim 2,
Blank portions (12a, 12a) which are folded in two from the vicinity of the longitudinal center portion of the surface film (11) formed in the tray shape, bag shape, etc. with the back film (12) inside, and projecting in three directions of the back film ) The two are sealed with a heat seal.

  In the disposable warmer packaging material of the present invention, contents such as a heating element are wrapped in front and back films, and the back film is provided with many fine holes for taking in outside air. By folding the back film into two with the back film inside, and sealing the back film margins around the front film, the heating element and the like are not exposed to the outside air. In addition, when used, the seal part to which the blank portion is bonded is peeled off to open the outside air intake micropores of the back film, so that oxygen can be taken in the outside air and the contents can be heated and the heat released. It is what has. Furthermore, the conventional double wrapping of the inner bag and the outer bag is improved, and excellent effects such as a reduction in the cost of the packaging material are exhibited.

  The best mode for carrying out the invention will be described with reference to the drawings.

  FIG. 1 is an explanatory cross-sectional view showing a disposable body packaging material according to an embodiment of the present invention. FIG. 2 is a disposable body warmer packaging material viewed from above in the present invention, where (A) is a plan explanatory view showing blank portions of a front film and a back film, and (B) is a back film provided with fine holes. FIG. FIG. 3 is an explanatory view showing a shape state of the disposable body packaging material filled with the contents of the present invention.

                                                                    As shown in FIG. 1, the disposable warmer wrapping material in the present invention has a surface film (11) appropriately formed in a tray shape or a bag shape and the like, which is a heating element such as charcoal, iron powder, and a water absorbent material. After filling, this is a warmer packaging material (10) whose back side is sealed with a back film (12). Further, the front film (11) is made of a barrier film having a sealant layer on the inner surface, and the back film (12) is made of an easy peel film or the like, and is formed in a tray shape or a bag shape. After the surface film is filled with the contents (30), the surface film is sealed on the back film by heat sealing. The back film (12) has a large number of pinhole-shaped micropores ( 15).

  Next, as shown in FIG. 2 (A), the back film (12) has a margin (appropriately sized) that protrudes around the surface film (11) formed in a tray shape or bag shape. 12a, 12a). Further, as shown in FIG. 2B, the back film (12) is provided with a large number of fine holes (15) for taking in outside air, and these pinhole-shaped fine holes are the heat generating material of the contents. There is no particular limitation as long as certain carbon powder, iron powder, etc. are not leaked.

  Next, as shown in FIG. 3, the state of the finished product of the disposable body packaging material (10) is shown, and the contents are filled in the surface film (11) formed in a tray shape or a bag shape. After sealing with the back film, the front film is vertically folded in two with the back film (12) inside from the vicinity of the center. At this time, the three blanks (12a, 12a) of the back film protruding from the front film are sealed by heat sealing so that the outside air intake micropores (15) provided in the back film do not touch the outside air. It will be sealed in a state.

That is, the front film is sealed with a back film provided with fine holes (15) and folded in two, so that only the margins (12a, 12a) protruding in three directions are overlapped and heat-sealed. As a result, the fine holes formed in the back film are blocked from the outside air, and the airtightness is maintained and heat generation is prevented. At the time of use, the sealed blank portion is peeled off, the fine holes for taking in outside air provided in the back film are opened, and air is taken in to generate heat.

  Next, the details of the surface film (11) are preferably those having a sealant layer on the inner surface based on a barrier film. In consideration of the case where the heat is generated by the warmer, it is desirable that the sealant has a melting point higher than this heating temperature. However, if there is no low temperature sealing property, the filling machine speed is limited, so the melting point is about 70 ° C to 160 ° C. Is desirable. As the barrier film, an aluminum foil, a barrier vapor deposition film, or a polyvinylidene chloride coated film can be used. Further, a concealing layer or aluminum vapor deposition film by printing or the like may be used so that the contents (contents) cannot be seen outside the sealant layer.

Next, the back film (12) is basically the same structure as the surface film, but the difference from the surface film is that
-Provide air holes (fine holes) for taking in oxygen in the air at the start of heat generation.

    -The outermost layers can be bonded to each other, and the material that can be peeled off (peelable) is used in an important case.

    -The outermost layer material is not particularly limited, but an existing easy peel film or the like can be used. Or it is also possible to insert a film that is pseudo-adhered with the outermost layer of the back film and seal the edge (margin part seal). A film without barrier properties may be used.

  In addition, the air hole drilling process for taking in oxygen in the air should use a method in which holes smaller than the contents are physically drilled with a fine needle, etc., or burned with a discharge or laser. Can do.

  A specific example will be given and comparatively evaluated.

  In Example 1, 20 μm-thick vinylidene chloride-coated nylon (KNy) and vapor-deposited linear low-density polyethylene (VMLLDPE) are dry-laminated as a surface film, and the linear low-density polyethylene is deposited on the polyethylene (PE) surface of the vapor-deposited linear low-density polyethylene. Perform 30 μm extruder lamination.

  The back film is dry laminated with 20 μm nylon (Ny) and 20 μm vapor-deposited linear low density polyethylene (VMLLDPE), and the linear low-density polyethylene is 30 μm on the polyethylene (PE) surface of the vapor-deposited linear low-density polyethylene in the same manner as the above surface film. Do the extruder lami. Furthermore, dry lamination of polyethylene-based easy peel film is performed on the nylon surface. Then, the pinhole (micropore) of the grade which the content does not spill is made, and it is set as a back film.

  Using this surface film / back surface film, the contents of warmers such as “charcoal, iron powder, water-absorbing material” are filled and the four corners are sealed (size: 50 × 80 mm square). Thereafter, the back film (the one with the fine holes) was turned inside, and the three easy peel surfaces (blank portions) were sealed to obtain a warmer packaging material.

  The surface film in Example 2 is the same as the surface film of Example 1, and the back film is the same as the surface film of Example 1 (same as the surface film of Example 2). Thereafter, a pinhole (fine hole) is formed so that the contents do not spill, and the back film is formed. Using this surface film / back surface film, the contents of the body (heating element) such as “charcoal, iron powder, water-absorbing material” are filled and the four corners are sealed (size: 50 × 80 mm square). After that, the easy-open easy peel film is sandwiched between nylon (Ny), the outermost layer of the backside film (50x40mm), which is half the size of the warmer, and the three blanks are sealed to make the disposable warmer packaging material Obtained.

  A third embodiment will be described. As a surface film (inner bag), 15 μm nylon (Ny) is vapor-deposited with 20 μm of vapor-deposited linear low-density polyethylene (VMLLDPE), and 30 μm of linear low-density polyethylene is laminated on the polyethylene (PE) surface of the vapor-deposited linear low-density polyethylene. Do.

  Further, as the back film (inner bag), a pin film (fine hole) is formed in the same component as the inner bag surface film so that the contents do not spill, thereby forming the back film. Using this surface film / back surface film, the contents of warmers such as “charcoal, iron powder, water-absorbing material” are filled and the four corners are sealed (size: 50 × 80 mm square).

  Further, the outer bag is further packaged with a vinylidene chloride coat 0PP (KOP) having a thickness of 20 μm / an ethylene vinyl acetate copolymer having a vinyl alcohol (VA) content of 10% having a thickness of 30 μm.

  The comparative evaluation of Example 1, Example 2, and Example 3 (comparative product) is shown in Table 1 below.

結果は、外袋を使用した従来品同様の使い捨てカイロの包装材は、従来設備で生産可能で優れているが、内袋と外袋の二重包装となり問題点が多く見られた。

As a result, the packaging material for disposable warmers similar to the conventional products using the outer bag can be produced with the conventional equipment.

  The warmer packaging material of the present invention can be used for all disposable warmers that are double-wrapped. Further, it can be used for packaging materials such as a poultice material for cooling and heating.

It is sectional explanatory drawing which shows the disposable body packaging material in one Example of this invention. In the disposable warmer packaging material viewed from above in the present invention, (A) is a plane explanatory view showing the blank portion of the front film and the back film, and (B) is a plane explanatory view of the back film provided with fine holes. It is. It is explanatory drawing which shows the shape state of the disposable body packaging material with which the content in this invention was filled.

Explanation of symbols

10 …… Packaging material for disposable body warmers 11 …… Surface film 12 …… Back film 12a …… Margin part of back film 15 …… Small hole (pinhole)
30 …… Contents

Claims (3)

  It is a disposable warmer packaging material in which the surface film formed in a tray shape or bag shape as appropriate is filled with contents such as charcoal, iron powder, water-absorbing material, etc., and then the back side is sealed with a back film. The film (11) is composed of a barrier film having a sealant layer on the inner surface, and the back film (12) is composed of an easy peel film or the like and is filled with the contents (30), and then the surface is covered with the back film. A disposable warmer packaging material comprising a structure in which the bottom of the film is sealed, and the back film is provided with a large number of fine holes (15) for taking in outside air.   The back film (12) is slightly larger than the surface film (11) formed in a tray shape, a bag shape or the like, and is provided with blank portions (12a, 12a) around the surface film. Item 10. A disposable warmer packaging material according to item 1.   The front film (11) formed in the tray shape, bag shape, or the like is folded in two from the vicinity of the longitudinal center portion with the back film (12) inside, and the blank areas (12a, 12a) on the three sides of the back film are 3. The disposable body warmer packaging material according to claim 1 or 2, wherein the bag is sealed with a heat seal.

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