JP2006008180A - Inner packaging bag for bag-in-box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inner packaging bag for a bag-in-box which is made of a double film consisting of inner and outer films, between which a flowable material is enclosed to give the inner packaging bag heat insulating property, deodrizing property, or the like. <P>SOLUTION: According to the inner packaging bag (10), the periphery (14) of the double film (13) is formed by superposing respectively an inner films (11) and outer films (12), is heat-sealed together to form a storage part (14). Then, a spout stopper, which communicates with the outside, is heat-bonded to a part of the double film (13). The flowable material (18) is enclosed in between the inner film (11) and the outer film (12). The flowable material (18) may be a material having a heat insulating effect, a material having a deodorizing effect, a material having a cooling effect, a material having a deoxidizing effect. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an interior bag for a bag-in-box, and in particular, an interior for a bag-in-box in which a fluid substance is enclosed between an inner film and an outer film to give the interior bag itself various resistances. Regarding bags.

  Recently, we have used an inner bag that is heat-sealed in a bag shape with two or three plastic films for storing liquid in the interior, and a cardboard box has been installed on the exterior to maintain strength and shape during transportation and storage. Used combination containers are distributed as bag-in-boxes.

  In this bag-in-box, for example, the heat insulation is made only by an external cardboard box, so that the contents are easily affected by changes in the outside air temperature. In addition, the cardboard box and the inner bag alone may cause changes in odor and taste in the contents due to the external environment. There was no heat retention effect to keep the refrigerated state or the frozen state.

  The present invention has been made in view of the above-described problems relating to bag-in-box, and has a heat insulating property by enclosing a fluid substance in a gap between an inner film and an outer film of a double film used for an interior bag. Another object of the present invention is to provide an interior bag for a bag-in-box that retains deodorizing properties, cold insulation properties, and oxygen scavenging properties.

  In the first aspect of the present invention, the periphery of the double film in which two inner films and two outer films are stacked is heat-sealed to form a storage portion, and the exterior and the storage portion are electrically connected to a part of the double film. An interior bag for a bag-in-box, in which an outlet plug is heat-sealed, wherein a fluid substance is sealed in a gap between the inner film and the outer film. .

  As described above, according to the first aspect of the present invention, since the fluid substance is sealed in the gap between the inner film and the outer film, the bag-in-box can be insulated by changing the material of the fluid substance. And various resistances such as deodorizing properties can be imparted.

  The invention of claim 2 is the bag-in-box interior bag according to the invention of claim 1, wherein the flowable substance is a substance having a heat insulating effect.

  Thus, according to the second aspect of the present invention, since the fluid substance is a substance having a heat insulating effect, the bag in box is provided with heat insulating properties.

  The invention of claim 3 is an interior bag for a bag-in-box according to the invention of claim 1, wherein the fluid substance is a substance having a deodorizing effect.

  Thus, according to the third aspect of the invention, since the fluid substance is a substance having a deodorizing effect, the bag-in-box is imparted with a deodorizing property.

  According to a fourth aspect of the present invention, there is provided an interior bag for a bag-in-box according to the first aspect of the invention, wherein the flowable substance is a substance having a cooling effect.

  Thus, according to the fourth aspect of the present invention, since the fluid substance is a substance having a cold-retaining effect, the bag-in-box is provided with the cold-retaining property.

  The invention of claim 5 is the interior bag for a bag-in-box according to the invention of claim 1, wherein the fluid substance is a substance having a deoxidation effect.

  Thus, according to the fifth aspect of the present invention, since the fluid substance is a substance having a deoxidizing effect, the bag-in-box is provided with the contents preservability.

  Thus, by enclosing the substance having a heat insulating effect between the inner film and the outer film of the bag-in-box interior bag of the present invention, it is possible to prevent the inner bag from being changed due to a change in the outside air temperature. Further, by enclosing a substance having a deodorizing effect between the inner film and the outer film, it is possible to prevent changes in the taste and smell of the contents. Moreover, the content is kept cold by enclosing the substance which has a cool keeping effect between an inner film and an outer film. Furthermore, the content preservation | save property improves by enclosing the substance which has a deoxidation effect between an inner film and an outer film.

The present invention will be described in detail below based on one embodiment.
The inner bag for a bag-in-box according to the present invention, for example, as shown in FIGS. 1 and 2, heats the periphery (14) of a double film (13) in which two inner films (11) and two outer films (12) are stacked. A bag-in-box interior bag (10) which is sealed to form a storage portion (15), and a spout plug (16) for electrically connecting the outside and the storage portion (15) to a part of the double film. ).

  A fluid substance (18) is sealed in the gap (17) between the inner film (11) and the outer film (12).

  The inner film (11) and the outer film (12) are, for example, low-density polyethylene film (LDPE), high-density polyethylene film (HDPE), and ethylene / vinyl acetate of commonly used bag-in-box interior bags. Copolymer film (EVA), LDPE / HDPE / LDPE, LDPE / EVA, LDPE / stretched nylon film (ONy), LDPE / polyethylene terephthalate film (PET), inorganic compounds such as aluminum oxide and silicon oxide on LDPE / PET Inorganic compound vapor-deposited PET (VM-PET), LDPE / VM-PET / LDPE, LDPE / ethylene-vinyl alcohol copolymer having a thickness of 20 to 100 nm formed by a vapor deposition method such as physical vapor deposition or chemical vapor deposition (EVOH) / LDP Inorganic compound vapor deposition in which a thin film of an inorganic compound such as aluminum oxide or silicon oxide is provided on a linear low density polyethylene (L-LDPE) / ONy to a thickness of about 20 to 100 nm by a vapor deposition method such as physical vapor deposition or chemical vapor deposition. ONy, a single layer film such as a composite plastic film laminated with an aluminum foil having a thickness of 7 to 20 μm or a composite film can be appropriately selected and used depending on the contents to be stored.

  The spout stopper (16) is generally an annular spout attached to the opening hole of the double film (13) by a heat fusion method, and a cap portion fitted or screwed into the opening of the annular spout. And is formed from. The annular spout is made of a semi-rigid plastic resin such as polyethylene, and the cap part is made of a flexible material such as polyester, polypropylene, or synthetic rubber.

  The flowable substance (18) enclosed in the gap (17) between the inner film (11) and the outer film (12) varies depending on the properties to be applied to the inner bag. For example, a fibrous material such as granular or small piece foamed plastic or pulp foamed beads can be preferably used.

  In addition, when imparting a deodorizing effect, a substance such as granular or powdery zeolite or activated carbon can be suitably used, and a liquid chemical deodorant may be used.

  Moreover, when giving a cold-retaining effect, substances, such as a water absorbing resin which absorbed water, can be used conveniently.

  Furthermore, when giving a deoxidation effect, substances, such as an iron powder type and an ascorbic acid type, can be used conveniently.

  The spout stopper (16) may be attached to the double film (13) by heat-sealing on one side of the inner bag in the same manner as the inner bag of a normal bag-in-box. And may be heat-sealed by sandwiching between two films.

  For example, the flowable material (18) is sealed in the gap (17) between the inner film (11) and the outer film (12). For example, the three-side periphery (14) of the double film is first placed on the inner film (11). And heat-sealed in the state of a double film (13) in which the outer film (12) is overlaid to form a three-side sealed bag (see FIG. 3 (a)), and then the inner film (11) on the other side. After storing the fluid substance (18) in the gap (17) between the outer film (12) and the outer film (12) (see FIG. 3B), the double film is heat-sealed (14) to complete the encapsulation (see FIG. (Refer FIG.3 (c)). The fluid substance (18) is stored on the double film (13) on both sides.

  Finally, the remaining double-side film is heat-sealed to produce an interior bag (10) in which the four sides are heat-sealed (see FIG. 3D).

It is plane explanatory drawing which shows one Example of the interior bag for bag-in-boxes of this invention. It is a section explanatory view showing one example of a bag-in-box interior bag of the present invention. (A)-(d) is explanatory drawing which shows typically the state which encloses a fluid substance in the gap | interval part of the inner film and outer film of a double film, and makes it the interior bag for bag-in-boxes of this invention. .

Explanation of symbols

10. Internal bag for bag-in-box 11 Inner film 12 Outer film 13 Double film 14 Periphery, heat-sealed part 15 Storage part 16 Outlet plug 17 Gap 18 .. Fluid substances

Claims (5)

A bag-in in which a peripheral part of a double film in which two inner films and two outer films are stacked is heat-sealed to form a storage part, and a spout plug that connects the external part and the storage part to a part of the double film is heat-sealed. In the box interior bag,
A bag-in-box interior bag, wherein a fluid substance is sealed in a gap between the inner film and the outer film.   2. The bag-in-box interior bag according to claim 1, wherein the fluid substance is a substance having a heat insulating effect.   The interior bag for a bag-in-box according to claim 1, wherein the fluid substance is a substance having a deodorizing effect.   The interior bag for a bag-in-box according to claim 1, wherein the fluid substance is a substance having a cooling effect.   The interior bag for a bag-in-box according to claim 1, wherein the fluid substance is a substance having a deoxygenating effect.

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