WO2003093131A1

WO2003093131A1 - Bag for deaeration, and material of the bag for deaeration

Info

Publication number: WO2003093131A1
Application number: PCT/JP2002/004416
Authority: WO
Inventors: Ryoichi Otsubo; Akira Ishizaki
Original assignee: Aru Corporation; Ishizaki Shizai Co., Ltd.
Priority date: 2002-05-02
Filing date: 2002-05-02
Publication date: 2003-11-13
Also published as: AU2002255304A8; AU2002255304A1; US20040074803A1

Abstract

A bag for deaeration, comprising a bag body having first and second sheets (11) and (12) with thermally fusible synthetic resin films (11a) and (12a) on the inside thereof and nonwoven cloth (15) formed with thermally fusible synthetic fibers in a permeable fiber structural body, wherein the first and second sheets (11) and (12) are closed by thermal fusing the lateral sides (a, a) and the lower side (b) thereof and the upper side thereof forms an opening part (13), the nonwoven cloth (15) is adhered or fused to the inner surface of the sheets (11) and (12), an aeration is performed from the opening part (13) in such a state that food and cloths are stored in a space part (16) between the nonwoven cloths (15) and a heat seal is performed in a width shown by dashed lines (c) and (c), at the time of deaeration, the air inside the bag body is sucked from the opening part in the direction orthogonal to the thickness direction of the nonwoven cloth (15) inside the nonwoven cloth (15), and the opening part (13) is sealed since the fiber structural body of the nonwoven cloth (15) is fused when the opening part (13) is thermally sealed. The nonwoven cloth (15) may be a woven cloth or a knitted cloth, and may not be adhered nor fused to the inner surfaces of the sheets (11) and (12).

Description

Description Deaeration bag and material for the deaeration bag

The present invention relates to a bag for deaeration and a material for the bag for deaeration, particularly, a bag for deaeration for storing food in a refrigerated / frozen state, storing bedding and clothing in a compact, and the deaeration bag. For materials for bags. Background art

Conventionally, for example, when refrigerated or frozen food such as meat and fish is stored, the food is stored in an airtight bag made of synthetic resin film, and the inside of the bag is evacuated and sealed to avoid contact with oxygen. Such degassing bags are provided. Instruments are also provided for degassing and heat sealing the bag opening.

As a deaeration bag, one described in U.S. Pat. No. Re.34,929 is known. In this deaeration bag, as shown in FIG. 8, a convex portion 2 and a concave portion 3 are formed on the entire surface of a synthetic resin film 1, and a bag is formed with the film 1. After the food is stored, the concave portion 3 is formed. Deaerate from the opening at one end of the bag as a ventilation path. After degassing, heat seal the opening at one end and seal the bag. However, the bag for deaeration has the following problems. That is, the film 1 needs to have a certain hardness and thickness to maintain the shape of the convex portion 2 and the concave portion 3, and it is necessary to use a thick polyethylene terephthalate film or a polyamide film. Due to the high cost, adhesion to the contents during degassing is not always desirable. In addition, the film 1 itself has no water absorbency, and the moisture of the contents (eg, meat juice, etc.) is absorbed through the recess 3 during degassing. In addition to the risk of inflow into the pulling device, the presence of moisture in the seal will result in poor sealing.

Accordingly, an object of the present invention is to provide a degassing bag and a material thereof which have water absorbency, have good adhesion to a container at the time of degassing, and can be manufactured at low cost. . Disclosure of the invention

In order to achieve the above object, a bag for degassing according to the present invention comprises: a bag comprising first and second sheets provided at least on the inner surface side with a synthetic resin film having heat welding property; A nonwoven fabric, a woven fabric or a knitted fabric made of a synthetic fiber having a welding property and having a breathable fiber structure, wherein the first and second sheets are closed on three sides and open on one side; The non-woven fabric, woven fabric or knitted fabric is accommodated between the first and second sheets, and when air is evacuated from the one opening, the air in the bag body is the non-woven fabric, woven fabric or When the opening is heated after being sucked in a direction perpendicular to the thickness direction inside the knitted fabric and deaerated, the fibrous structure of the nonwoven fabric, woven fabric or knitted fabric is in a molten state and the opening is opened. It is characterized by sealing.

The bag for degassing according to the present invention degass by using the space of the nonwoven fabric, woven fabric or knitted fabric fibrous structure housed in the bag body as an air passage, and the air inside the bag body. Is sucked from the surface of the nonwoven fabric, woven fabric or knitted fabric, and is sucked at the opening in a direction perpendicular to the thickness direction. Then, by heating the opening at one end of the bag after degassing, the fibrous structure of nonwoven fabric, woven fabric or knitted fabric is melted and welded to the first and second sheets, and the opening is sealed. Is done. -The bag for deaeration according to the present invention has water absorbability because a nonwoven fabric, a woven fabric or a knitted fabric is contained in the bag body, and absorbs moisture generated from the container during deaeration. The risk of flowing into the pulling device is reduced. In addition, it has a soft touch to the contents, has a buffering property, and has a longer shelf life for foods and the like. In addition, since the first and second sheets are not embossed, it is possible to use a thin, soft, and inexpensive polyethylene phenol or polyethylene terephthalate finolem. This improves the adhesion to the contents.

Further, the nonwoven fabric, woven fabric or knitted fabric is opaque before heat sealing due to irregular reflection of the fibrous structure, but after heat sealing, the fibrous structure in the heated part is melted and visible transparently. It is possible to easily identify whether or not the seal has been securely performed.

In the deaeration bag according to the present invention, the number of nonwoven fabrics, woven fabrics or knitted fabrics contained between the first and second sheets may be one or two. Further, the nonwoven fabric, woven fabric or knitted fabric may be adhered or fused to the inner surfaces of the first and second sheets, or may not be adhered or fused. If not glued or fused, food, clothing, etc. can be stored between the first or second sheet and the nonwoven, woven or knitted fabric, in which case the interior of the bag must be at least two independent It can be used as a storage unit.

On the other hand, the material for the bag for degassing according to the present invention comprises a first and second long sheets which are laminated with each other at least on the inner surface side of a synthetic resin film having heat welding property, A non-woven fabric, a woven fabric or a knitted fabric made of synthetic fiber having a property, wherein the first and second sheets are welded on both sides along a longitudinal direction, and the non-woven fabric, the woven fabric or the knitted fabric is It is housed between the first and second sheets.

In the material according to the present invention, one end of the material is sealed by heating or the like, and the material is cut into a suitable size to obtain the deaeration bag. Food, clothing, and the like are stored in the bag. As described above, deaeration and sealing are performed. The present invention Since the material according to (1) is long, the user presses it to an appropriate length and uses it. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 shows a bag for deaeration according to a first embodiment of the present invention, (A) is a front view, (B) is a partial sectional view thereof,

FIG. 2 is a partial cross-sectional view illustrating a deaeration bag according to a second embodiment of the present invention, FIG. 3 is a partial cross-sectional view illustrating a deaeration bag according to a third embodiment of the present invention, and FIG. FIG. 5 is a partial sectional view showing a bag for deaeration according to a fourth embodiment of the present invention. FIG. 5 is a perspective view showing an example of use with a deaeration / sealing device.

FIG. 6 is a cross-sectional view of a main part of FIG. 5,

FIG. 7 is a front view showing a material according to an embodiment of the present invention,

FIG. 8 is a perspective view showing a synthetic resin film constituting a conventional bag for deaeration. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment of a bag for deaeration and its material according to the present invention will be described with reference to the accompanying drawings.

(Refer to Fig. 1 for the first embodiment of the bag for deaeration)

As shown in FIGS. 1 (A) and 1 (B), a deaeration bag 1 OA according to a first embodiment of the present invention includes a nonwoven fabric 15 on the inner surface side of two sheets 11 and 12. The sides a, a and the lower side b are closed by heat welding, and the upper side is an opening 13.

The sheets 11 and 12 are laminating materials, and heat-sealable synthetic resin films 11a and 12a (for example, a polyethylene film) are disposed on the inner surface side, and are disposed on the outer surface side. Non-breathable synthetic resin films 11b and 12b (for example, polyethylene terephthalate film) are disposed. You.

'The nonwoven fabric 15 is made of a heat-synthesizable synthetic fiber and is a fiber structure having air permeability, and the force or the film 11 a, which is bonded to the inner surfaces of the sheets 11 and 12. When 12a is in a molten state, it is superposed and fused on the films 1la and 12a.

The sheets 1 1 and 1 2 and the non-woven fabrics 15 and 15 have the same size. In the welded portions a, a and b, the non-woven fabric 15 and the films 11 1 a and 12 a are heat-sealed. Welded.

In the deaeration bag 1OA having the above configuration, a device 20 (an example of which is shown in FIGS. 5 and 6) for heat-sealing one end opening 13 of the bag together with the deaeration is used. Degas and seal. That is, when food, clothes, etc. are stored in the space 16 between the nonwoven fabrics 15, 15, and one end opening 13 is degassed and sealed with the sealing device 20, the inside of the bag is opened from the opening 13. The air is sucked and deaerated, and after the deaeration is completed, heat sealing is performed at the width of the alternate long and short dash line c, c in FIG. The state of degassing and sealing using the tool 20 will be described later with reference to FIGS. 5 and 6.

Conventionally, it has been known that the nonwoven fabric 15 is allowed to ventilate in the thickness direction through gaps in the fibrous structure. However, in the present invention, in the opening 13, the air is ventilated in the direction perpendicular to the thickness direction through the gap of the fibrous structure. Further, the nonwoven fabric 15 is heated after being degassed, so that the fibrous structure is in a molten state, and the opening 13 is sealed.

In such a bag for deaeration 10 A, the nonwoven fabric 15 functions as a deaeration passage and has water absorption, so that moisture generated from the stored material during deaeration is deaerated and sealed. The risk of flowing into the instrument is greatly reduced. Further, the nonwoven fabric 15 has a soft contact with the contents, has a gentle impact, and has a good durability such as food. In addition, embossing etc. is applied to sheets 11 and 12. Since it is not applied, a thin, soft and inexpensive polyethylene film or polyethylene terephthalate film can be used, and the softness improves the adhesion to the container.

Furthermore, the nonwoven fabric 15 is opaque before heat sealing due to irregular reflection of the fibrous structure, but after heat sealing, the fibrous structure in the heated portion is melted and visually observed, and the seal is It can be easily identified whether the operation has been performed reliably.

Further, even after the sealing portion is cut and opened, the bag can be degassed again from the new opening and heat sealed, and the bag 1OA can be reused.

(Refer to Fig. 2 of the second embodiment of the bag for deaeration)

As shown in FIG. 2, the deaeration bag 10B according to the second embodiment of the present invention has a single nonwoven fabric 15 sandwiched between sheets 11 and 12. The cloth 15 is adhered or fused to the inner surface of the sheet 12, and is not adhered or fused to the inner surface of the sheet 11. In the deaeration bag 10B, articles are stored in the space 16 formed between the sheet 11 and the nonwoven fabric 15.

Note that, in the deaeration bag 10B, the configuration of the sheets 11 and 12 and the planar configuration of the bag itself are the same as in FIG. 1, and the operation and effect are as described in the first embodiment. It is. In particular, in the second embodiment, the articles housed in the space 16 can be viewed well through the transparent sheet 11.

(Refer to Fig. 3 of the third embodiment of the deaeration bag.)

As shown in FIG. 3, a deaeration bag 10 C according to a third embodiment of the present invention has a single nonwoven fabric 15 sandwiched between sheets 11 and 12. The cloth 15 is not bonded or fused to the inner surfaces of the sheets 11 and 12. Follow Thus, two spaces 16 and 16 are formed between the sheets 11 and 12 and the nonwoven fabric 15, and the articles are accommodated in the spaces 16 and 16.

Note that, in the deaeration bag 10C, the configuration of the sheets 11 and 12 and the planar configuration of the bag itself are the same as in FIG. 1, and the operation and effect thereof will be described in the first and second embodiments. As you did. In particular, in the third embodiment, since there are two space portions 16 and 16, different types of foods and the like can be accommodated separately. Alternatively, food can be stored in one space 16 and a preservative, oxygen scavenger, hygroscopic agent, and the like can be stored in the other space 16.

(Refer to Fig. 4 of the fourth embodiment of the deaeration bag.)

As shown in FIG. 4, a degassing bag 1 OD according to a fourth embodiment of the present invention has two nonwoven fabrics 15 and 15 sandwiched between sheets 11 and 12. The nonwoven fabrics 15 and 15 are not bonded or fused to the inner surfaces of the sheets 11 and 12. Therefore, three spaces 16, 16, 16 are formed between the sheets 11, 12 and the nonwoven fabrics 15, 15, and the article is formed in these spaces 16, 16, 16. Will be housed in

Note that, in the deaeration bag 10D, the configuration of the sheets 11 and 12 and the planar configuration of the bag itself are the same as in FIG. 1, and the operation and effect thereof are as described in the first, second, and third embodiments. As described in the embodiment. In particular, in the fourth embodiment, since there are three space portions 16, 16, 16, different types of foods and the like can be stored separately, a preservative, an oxygen absorber, a moisture absorbent, etc. It is also possible to house different types of objects with different functions and purposes.

(Refer to Fig. 5 and Fig. 6)

Here, an example of the degassing / sealing device for the degassing bag 10 # to 10D and the method of using the same are shown in FIGS. The deaeration bag will be described by taking the example shown in the second embodiment as an example. This degassing / sealing device 20 has a suction box 22 and a heat sealing member 25 provided on a base plate 21, and a suction pump 29 attached to the rear of the suction box 22.

The suction box 22 includes a lower housing 22a and an upper housing 22b. The lower housing 22 a is fixed on the base plate 21, and the upper housing 22 b can be opened and closed with respect to the lower housing 22 a using the support shaft 23 as a fulcrum. Thus, the inside of the suction box 22 is kept airtight. Rubber materials 24a and 24b (see Fig. 6) are attached to the openings of the housings 22a and 22b. The opening 13 is sandwiched therebetween.

The heat sealing member 25 includes a receiving stand 26 and a heating bar 27. The receiving stand 26 is fixed on the base plate 21 via the cushion material 26a, and the heating bar 27 can move up and down integrally with the upper housing 22b. Has a heat chip 27a which is heated by a heater (not shown).

A case will be described in which, for example, the degassing bag 10B containing the article 30 is degassed and sealed using the appliance 20 having the above configuration.

First, with the suction box 22 and the heat sealing member 25 open, the opening 13 of the bag 10B is placed on the rubber material 24a and the receiving stand 26. Then, when the suction box 22 and the heat seal member 25 are closed and a degassing switch (not shown) is turned on, the suction pump 29 is operated to degas the inside of the bag 10B. During this deaeration, the openings 13 are squeezed at a pressure that does not close the gap between the fibrous structures of the nonwoven fabric 15, and air is sucked through the gaps between the fibrous structures. During this deaeration, the nonwoven fabric 15 functions as a suction passage for the internal air, the air in the bag 10B is sucked from the surface of the nonwoven fabric 15, and the opening 13 has a thickness in the direction of its thickness. Suction is performed in the direction perpendicular to the direction (see the arrow A direction in Fig. 6).

After the completion of the deaeration, when a heat seal switch (not shown) is turned on, Electricity is supplied to the heat chip 27a of the heating par 27, and the opening 13 is heat-sealed. That is, the fibrous structure of the nonwoven fabric 15 is brought into a molten state by heating, and is fused together with the heat-welding films 11a and 12a, whereby the opening 13 is sealed.

(One embodiment of the material, see Fig. 7)

One embodiment of the material for a deaeration bag according to the present invention is shown in FIG. This material 10 ′ is obtained by laminating the sheet 11, the nonwoven fabric 15, and the sheet 12 into a long body, and heat-welding the both sides b.

This material 10 ′ can be made into a bag by heat-sealing the lower side b using the heat-sealing member 25 of the degassing ′ sealing device 20 and cutting it to an appropriate size. In the same manner as the deaeration bags 10A, 10B, IOC, and 10D, foods, clothes, and the like are stored and deaerated and sealed as described above. The material 10 ′ is provided to the user as a roll wound in a predetermined length. Users will cut and use the appropriate length for the items to be stored.

The cross-sectional structure of the material 10 ′ is one of those shown in FIG. 1 (B), FIG. 2, FIG. 3 or FIG. 4, and other cross-sectional structures may be used. (Other embodiments)

In addition, the bag for deaeration and the material thereof according to the present invention are not limited to the above embodiments, and can be variously changed within the scope of the gist. In particular, the sheets 11 and 12 can use various films other than polyethylene and polyethylene terephthalate, and need not necessarily be a laminate material, and may be a single film.

Also, in place of the non-woven fabric 15, a woven or knitted fabric made of a synthetic fiber having heat welding properties can be used to obtain the same function and effect as described above.

Fig. 5 and Fig. 6 show the outline of the deaeration / sealing device. It goes without saying that instruments having various configurations other than the above can be used. Industrial applicability

As described above, the degassed bag and its material according to the present invention prevent oxidation and deterioration in food and are useful for long-term storage, and are compact and compact in clothing and the like. Useful for

Claims

. The scope of the claims

1. a bag made of first and second sheets provided with a synthetic resin film at least on the inner surface side;

A nonwoven fabric, a woven fabric or a knitted fabric made of a synthetic fiber having heat welding property and having a breathable fiber structure.

The first and second sheets are closed on three sides and open on one side, and the nonwoven fabric, woven fabric or knitted fabric is accommodated between the first and second sheets;

When deaerated from the one opening, the air in the bag body is sucked in the non-woven fabric, woven fabric or knitted fabric in a direction orthogonal to the thickness direction, and when the opening is heated after deaeration, The nonwoven fabric, woven or knitted fabric fiber structure is in a molten state to seal the opening,

A bag for deaeration characterized by the following.

2. Long first and second sheets that are laminated on each other with at least an inner surface side of a synthetic resin film having heat welding property,

The first and second sheets are welded on both sides along the longitudinal direction,

The nonwoven fabric, woven fabric or knitted fabric is accommodated between the first and second sheets;

2. The material for a bag for degassing according to claim 1, wherein: