CN201144043Y - Environmentally friendly food packaging materials - Google Patents

Abstract

The utility model discloses an environment-friendly food packaging material, which is composed of paper as a substrate, a PVDC layer, an ink layer, an aluminized layer, an adhesive layer and a co-extruded MPE layer. The paper is food-grade paper; the ink layer is ink Alcohol-soluble or water-soluble environmentally friendly inks are used, and there is no need to worry about odors after long-term use; the PVDC layer as a paper coating has high barrier properties, and has excellent moisture and oxygen barrier properties; the aluminum coating is direct-type vacuum aluminum plating or PET Vacuum aluminum plating to enhance the barrier performance and anti-ultraviolet penetration; the adhesive layer adopts water-based adhesive, which does not pollute the environment; the co-extruded MPE layer is composed of 3 to 7 layers of metallocene PE film co-extruded and compounded, with excellent heat sealing performance . The utility model uses food-grade paper as the base body, the printing is beautiful and generous, the grade and visual sense of the packaging are improved, the paper has good stiffness, and has a good shelf display effect; it saves resources and is easy to recycle and reuse; it reduces the cost of materials and is beneficial to industrial production .

Description

Environmentally friendly food packaging materials

Technical field:

The utility model relates to a packaging structure for articles, in particular to a composite food flexible packaging structure.

Background technique:

Usually used plastic packaging material preparation process is as follows: After BOPP or PET printing, compound VMPET or AL or PET or NY, and then compound a layer of multi-layer co-extruded polyethylene film. The printing uses benzene-soluble ink in the gravure, and the solvents are toluene, ethyl ester and butanone; the compound uses polyurethane two-component adhesive, and the solvent is ethyl ester. However, ink solvents are likely to pollute people’s bodies and the environment because they contain benzene; polyurethane adhesives are mostly used as adhesives, and the solvent is ethyl ester. , AL is not easy to recycle and it is easy to cause plastic waste and pollute the environment. The applicant is Qingdao People's Printing Co., Ltd.'s two patents "a paper-based aluminum-plastic composite material for flexible packaging of liquid food" and "multiple paper-based aluminum-plastic composite material for liquid food aseptic packaging". It is composited with a total of seven layers of materials such as aluminum foil, and has the characteristics of non-toxic, odorless and high barrier performance. The latter achieves better adhesion by adding a bonding resin layer and a modified LDPE layer, but there are narrow application ranges. problem, and the use of aluminum foil increases costs.

Utility model content:

The technical problem to be solved by the utility model is to provide an environment-friendly food packaging material for the above deficiencies. It is beneficial to industrialized production, scientific environmental protection and other characteristics.

The technical scheme that the utility model takes is:

An environment-friendly food packaging material, which is made of paper as the substrate, plus PVDC layer, ink layer, aluminum layer, adhesive layer and co-extruded MPE layer, wherein: the paper is food-grade paper, which is a green material, and It has excellent printing color and strong stiffness.

The ink layer ink adopts alcohol-soluble or water-soluble environmentally friendly ink, so you don't have to worry about odor after long-term use.

As a coating of paper, the PVDC layer has high barrier properties and excellent moisture and oxygen barrier properties.

The aluminized layer is direct-type vacuum aluminized or PET vacuum aluminized to enhance barrier performance and resist UV penetration.

The thickness of the aluminum plating layer is 0.001-0.1 micron.

The adhesive layer adopts water-based adhesive, and the solvent is water, so there is no solvent consumption and solvent emission, and no environmental pollution.

The co-extruded MPE layer is composed of 3-7 layers of metallocene PE film co-extruded and compounded, with excellent heat sealing performance.

The beneficial effect that the utility model can reach is:

1. The utility model uses food-grade paper as the substrate to print beautifully, improve the grade and visual sense of packaging, have good paper stiffness, and have a good shelf display effect; it can be used instead of chemical raw materials such as polyester and nylon, saving resources and easy to recycle Reuse; reduce the cost of materials, which is beneficial to industrial production.

2. The utility model adopts alcohol-soluble or water-soluble ink as the ink layer, the solvent is alcohol or water, and there is no environmental pollution.

3. The adhesive of the utility model adopts water-based adhesive, and the solvent is water, so there is no solvent consumption and solvent emission, and no environmental pollution.

4. The co-extruded MPE layer material of the utility model is anti-pollution, has a wide range of heat-sealing temperature and low sealing temperature.

5. The practical production process has no solvents that pollute the staff and the production environment, and the structure is scientific and environmentally friendly.

Description of drawings:

Fig. 1 is a schematic structural view of Embodiment 1 of the present utility model.

Fig. 2 is a schematic structural view of Embodiment 2 of the present utility model.

Detailed ways:

Below in conjunction with accompanying drawing, the utility model is further described:

Embodiment 1: As shown in Figure 1, this environment-friendly food packaging material, with food paper 3 as substrate, at first direct-type vacuum aluminized compound is with 0.01 micron aluminized layer 4, the non-aluminized surface of food paper 3 After printing a layer of alcohol-soluble ink on the gravure color printing rotary machine, the upper ink layer 2 is compounded, and then a layer of PVDC layer 1 is coated on the tape casting machine, and finally the water-soluble adhesive layer is coated on the aluminum layer 4 by a dry compound machine 5. Composite with the co-extruded MPE layer 6 that is extruded with four layers of metallocene PE, and then cut or bagged to make film rolls or packaging bags required by customers.

Embodiment 2: As shown in Figure 2, this environment-friendly food packaging material is based on food paper 3. First, after printing a layer of water-soluble ink on the gravure color printing rotary machine, the upper ink layer 2 is composited, and the non-printing surface passes through A layer of PVDC layer 1 is coated on the tape casting machine and the aluminum-coated layer 4 of the PET substrate is cast and compounded. Finally, a water-soluble adhesive layer 5 is coated on the aluminum-coated layer 4 through a dry compound machine, and extruded with six layers of metallocene PE. The co-extruded MPE layers 6 are compounded, and then cut or bagged to make film rolls or packaging bags required by customers.

Claims (7)

1. An environment-friendly food packaging material, with paper (3) as the substrate, PVDC layer (1), ink layer (2), aluminized layer (4), adhesive layer (5) and co-extruded MPE layer (6) Composite, characterized in that the paper (3) is food-grade paper. 2. The environment-friendly food packaging material as claimed in claim 1, characterized in that: the ink of the ink layer (2) adopts alcohol-soluble or water-soluble environment-friendly ink. 3. The environment-friendly food packaging material according to claim 1, characterized in that: the PVDC layer is used as a coating directly compounded with the food-grade paper (3). 4. The environment-friendly food packaging material according to claim 1, characterized in that: the aluminized layer (4) is direct-ray vacuum aluminized or PET vacuum aluminized. 5. The environment-friendly food packaging material according to claim 4, characterized in that the thickness of the aluminum-coated layer (4) is 0.001-0.1 microns. 6. The environment-friendly food packaging material according to claim 1, characterized in that: the adhesive layer (5) adopts water-based adhesive. 7. The environment-friendly food packaging material according to claim 1, characterized in that the co-extruded MPE layer (6) is formed by co-extruding 3-7 layers of metallocene PE film.

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