CN215708382U - Composite film and packaging bag - Google Patents

Abstract

The utility model discloses a composite film, which sequentially comprises a substrate layer, an anti-tearing layer, a waterproof coating and a printing layer from inside to outside, wherein the substrate layer, the anti-tearing layer, the waterproof coating and the printing layer are manufactured in an extrusion forming mode, the substrate layer is a CPP (casting polypropylene) film layer, the anti-tearing layer is made of sisal fibers and stone paper base paper, the waterproof coating is the stone paper base paper, and the printing layer is light-weight coated paper. According to another aspect of the utility model, the packaging bag comprises an inner bag and an outer bag, wherein the inner bag is arranged in the outer bag, the outer bag is made of the composite film, a cavity is formed between the outer bag and the inner bag, nitrogen is filled in the cavity, the inner bag is made of a plastic material, and liquid drinks are placed in the inner bag.

Description

Composite film and packaging bag

Technical Field

The utility model belongs to the technical field of liquid beverage packaging, and particularly relates to a composite film and a packaging bag.

Background

Liquid beverages are usually packaged in plastic packaging bags, and food additives are added into common liquid beverages, so that the quality guarantee time of the liquid beverages is prolonged.

However, in the case of some fresh milk and plant juice, if food additives are added, the taste and flavor are affected, and therefore, such liquid beverages generally need to be stored at low temperature; when the liquid beverage is transported, the components in the liquid beverage are oxidized under the irradiation of high temperature and sunlight, and the liquid beverage is discolored and smells, so that the drinking is influenced.

Although the above-mentioned liquid beverage can reduce high temperature and sunlight irradiation to some extent after being packed in a paper pack, the effect is still not good.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems in the prior art, the present invention is directed to a composite film, and a packaging bag using the composite film.

According to one aspect of the utility model, the composite film comprises a base layer, an anti-tearing layer, a waterproof coating layer and a printing layer in sequence from inside to outside, wherein the base layer, the anti-tearing layer, the waterproof coating layer and the printing layer are manufactured through extrusion forming, the base layer is a CPP (cast polypropylene) film layer, the anti-tearing layer is made of sisal fibers and stone paper base paper, the waterproof coating layer is the stone paper base paper, and the printing layer is light-weight coated paper.

According to another aspect of the utility model, the packaging bag comprises an inner bag and an outer bag, wherein the inner bag is arranged in the outer bag, the outer bag is made of the composite film, a cavity is formed between the outer bag and the inner bag, nitrogen is filled in the cavity, the inner bag is made of a plastic material, and liquid drinks are placed in the inner bag.

In some embodiments, the inner wall of the outer bag is provided with two fixing members and four clamping members for clamping two sides of the inner bag. Therefore, two mounting and four joint spare can reduce rocking of inner bag to a certain extent, prevent to rock and influence the taste of liquid drink because of the inner bag.

In some embodiments, two of the clamping members are respectively arranged at the upper ends of the two fixing members, and the other two clamping members are respectively arranged at the lower end of the inner wall of the outer bag.

In some embodiments, an inflation device is arranged on the lower end of the outer bag, and nitrogen is filled into the cavity through the inflation device.

In some embodiments, the inflation device is a valve. Therefore, the cavity can be filled with nitrogen through the air valve, the nitrogen in the cavity cannot leak out of the air valve, and the filled nitrogen can play a role in protecting the inner bag and the liquid beverage in the inner bag. The valve may be an existing component, the valve itself may be made of a plastic material, and in addition, the function of the valve is as follows: the gas can be filled into the cavity through the inflating valve, and the gas in the cavity cannot be automatically discharged from the inflating valve, so that the nitrogen can be ensured to exist in the cavity all the time; therefore, the nitrogen can be conveniently filled into the cavity through the inflating valve.

In some embodiments, the beverage container further comprises a beverage spout, wherein the lower end of the beverage spout is communicated with the inner bag, and the upper end of the beverage spout penetrates through the outer bag. Therefore, after the mouth of the drinking spout is opened, the liquid beverage in the inner bag can be sucked.

According to the utility model, the CPP film layer is a high-temperature-resistant material and can be steamed, the sisal fibers and the stone paper base paper have the anti-tearing effect, meanwhile, the stone paper base paper has the waterproof effect, and printing can be performed on the light-weight coated paper.

The CPP film layer is a material layer which can be steamed, and the composite film has two anti-tearing protection effects under the matching of the sisal fiber and the stone paper base paper, so that the anti-tearing effect is good; the stone paper base paper for manufacturing the waterproof coating 3 in the embodiment mainly uses limestone mineral resources as a main raw material, wherein the content of calcium carbonate is 70% -80%, and uses a high molecular polymer as an auxiliary material, and adopts a polymer extrusion and blow molding process after being processed by a certain flow process by utilizing the chemical principle of a high molecular interface and the characteristic of high molecular modification; the stone paper has a waterproof function; therefore, the composite film of the utility model can be steamed without damage.

In the utility model, because the nitrogen is filled between the inner bag and the outer bag and can expand, the inner bag is protected, the inner bag can be blocked to a certain degree, the quality guarantee period of the liquid beverage in the inner bag can be prolonged, the taste of the liquid beverage is kept, and meanwhile, direct irradiation of sunlight, light and the like on the liquid beverage in the inner bag can be avoided.

Drawings

FIG. 1 is a schematic structural diagram of a composite membrane according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a packaging bag according to an embodiment of the present invention.

In the figure: 1-a substrate layer; 2-a tear-resistant layer; 3-waterproof coating; 4-printing layer; 5-inner bag; 6-outer bag; 61-a fixture; 62-a clamping piece; 7-an inflator; 8-mouth of drinking.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 schematically shows the structure of a composite membrane according to an embodiment of the present invention.

As shown in fig. 1, a composite film, from down up include stratum basale 1, anti-tear layer 2, waterproof coating 3 and printing layer 4 in proper order, stratum basale 1, anti-tear layer 2, waterproof coating 3 and printing layer 4 are made through extrusion's mode, stratum basale 1 is the CPP rete, anti-tear layer 2 is made through sisal fiber and stone paper base paper, waterproof coating is stone paper base paper, printing layer 4 is light weight coated paper.

According to the utility model, the CPP film layer is a high-temperature-resistant material and can be steamed, the sisal fibers and the stone paper base paper have the anti-tearing effect, meanwhile, the stone paper base paper has the waterproof effect, and printing can be carried out on the light-weight coated paper.

Particularly, the CPP film layer is a material layer which can be cooked, and the composite film has two anti-tearing protection effects under the matching of the sisal fiber and the stone paper base paper, so that the anti-tearing effect is good; the stone paper base paper for manufacturing the waterproof coating 3 in the embodiment mainly uses limestone mineral resources as a main raw material, wherein the content of calcium carbonate is 70% -80%, and uses a high molecular polymer as an auxiliary material, and adopts a polymer extrusion and blow molding process after being processed by a certain flow process by utilizing the chemical principle of a high molecular interface and the characteristic of high molecular modification; the stone paper has a waterproof function; therefore, the composite film of the utility model can be steamed without damage.

Fig. 2 schematically shows the structure of a packing bag according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of wrapping bag, a wrapping bag, including inner bag 5 and outer bag 6, inner bag 5 can set up in the outer bag 6, outer bag 6 can adopt foretell complex film to make, can integrated into one piece have the cavity between outer bag 6 and the inner bag 5, can fill in the cavity and be equipped with nitrogen gas, inner bag 5 adopts plastic materials to make, be used for placeeing liquid drink in the inner bag 5.

Specifically, in the present embodiment, the outer bag 6 may have a rectangular parallelepiped shape, and the inner bag 5 may be adapted to the shape of the outer bag 6. In other embodiments, the outer bag 6 may be cylindrical, and the inner bag 5 may be adapted to the shape of the outer bag 6. No matter what the shapes of the outer bag 6 and the inner bag 5 are, the outer bag 6 and the inner bag 5 can contain liquid drinks, and nitrogen in the cavity cannot leak out.

Specifically, as shown in fig. 2, in this embodiment, the inner wall of the outer bag 6 can be integrally formed with two fixing members 61 and four engaging members 62, and the two fixing members 61 and the four engaging members 62 can be used to lock two sides of the inner bag 5, so that the two fixing members 61 and the four engaging members 62 can reduce the shaking of the inner bag 5 to a certain extent, and prevent the taste of the liquid beverage from being influenced by the shaking.

As shown in fig. 2, in this embodiment, the two upper snap-in members 62 are respectively disposed at the upper ends of the two fixing members 61, that is, the left snap-in member 62 on the upper side abuts against the left side of the upper end of the inner bag 5, the right snap-in member 62 on the upper side abuts against the right side of the upper end of the inner bag 5, the two lower snap-in members 62 are respectively disposed at the lower end of the inner wall of the outer bag 6, the two lower snap-in members 62 can abut against the two sides of the lower end of the inner bag 5, and the fixing members 61 can abut against the two sides of the inner bag 5. In other embodiments, there may be two fixing members 61 and six snap members 62, no matter how the snap members 62 and the fixing members 61 are arranged, as long as the snap members 62 and the fixing members 61 can fix the inner bag 5.

In this embodiment, as shown in fig. 2, an inflator 7 may be installed at the lower end of the outer bag 6, and nitrogen gas is filled into the cavity through the inflator 7. Of course, in other embodiments, the cavity may be directly filled with nitrogen during production, and the inflator 7 is not required.

In this embodiment, the inflating device 7 is preferably an air valve, and nitrogen can be filled into the cavity through the air valve, and the nitrogen can play a role in protecting the inner bag 5 and the liquid beverage in the inner bag 5. The valve in this embodiment may be an existing component, the valve itself may be made of a plastic material, and in addition, the function of the valve is as follows: the gas can be filled into the cavity through the inflating valve, and the gas in the cavity cannot be automatically discharged from the inflating valve, so that the nitrogen can be ensured to exist in the cavity all the time; therefore, the nitrogen can be conveniently filled into the cavity through the inflating valve.

In this embodiment, the present invention may further include a spout 8, a lower end of the spout 8 is communicated with the inner bag 5, an upper end of the spout 8 passes through the outer bag 6, and after the spout 8 is opened, the liquid beverage in the inner bag 5 may be sucked. In other embodiments, the spout 8 may be directly and integrally formed on the inner bag 5, and the specific structure of the spout 8 may be completely the same as that of the jelly drink in the prior art, and therefore, the structure thereof will not be described again.

According to the utility model, nitrogen can be filled into the cavity between the inner bag 5 and the outer bag 6 through the inflating valve, and the nitrogen can be expanded, so that the inner bag 5 and the outer bag 6 cannot be attached together, the inner bag 5 can be protected, the inner bag 5 can be blocked to a certain degree, and when sunlight or light irradiates on the outer bag 6, the quality guarantee period of the liquid beverage in the inner bag 5 can be prolonged and the taste of the liquid beverage can be maintained because the inner bag 5 and the outer bag 6 cannot be attached together.

The utility model is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.

Claims (7)

1. A composite membrane, characterized by: from inside to outside in proper order including stratum basale (1), tear-resistant layer (2), waterproof coating (3) and printing layer (4), stratum basale (1), tear-resistant layer (2), waterproof coating (3) and printing layer (4) make the complex film through the mode of extrusion, stratum basale (1) is the CPP rete, tear-resistant layer (2) are made through sisal fiber and stone paper base paper, waterproof coating is stone paper base paper, printing layer (4) are light weight coated paper.

2. A kind of wrapping bag, its characterized in that: the beverage filling device comprises an inner bag (5) and an outer bag (6), wherein the inner bag (5) is arranged in the outer bag (6), the outer bag (6) is made of the composite film according to claim 1, a cavity is formed between the outer bag (6) and the inner bag (5), nitrogen is filled in the cavity, the inner bag (5) is made of a plastic material, and the inner bag (5) is used for placing liquid beverages.

3. The package of claim 2, wherein: be equipped with two mounting (61) and four joint spare (62) on the inner wall of outer bag (6), two mounting (61) and four joint spare (62) are used for blocking the both sides of inner bag (5).

4. The package of claim 3, wherein: wherein two joint spare (62) are established respectively in the upper end of two mounting (61), and two other joint spare (62) are established respectively at the inner wall lower extreme of outer bag (6).

5. The package of claim 4, wherein: an air charging device (7) is arranged at the lower end of the outer bag (6), and nitrogen is charged into the cavity through the air charging device (7).

6. The package of claim 5, wherein: the inflating device (7) is an air valve.

7. The package of claim 6, wherein: the inner bag is characterized by further comprising a drinking nozzle opening (8), the lower end of the drinking nozzle opening (8) is communicated with the inner bag (5), and the upper end of the drinking nozzle opening (8) penetrates through the outer bag (6).

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