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A kind of manufacturing process of paper-plastic composite film for food packaging

A paper-plastic composite and food packaging technology, applied in the direction of layered products, lamination devices, lamination auxiliary operations, etc., can solve the problems of energy waste, high melting point, etc., reduce energy consumption, increase the bonding area, and the production method is simple and direct Effect

Active Publication Date: 2017-01-18
FOSHAN NANHAI DISTRICT XINYONGTAI ADHESIVE PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the commonly used food packaging heat-sealing paper-plastic composite films in the market are made of PE paper-plastic composite films. Due to the high melting point of PE, the temperature during heat-sealing is as high as 130°C-140°C. On the one hand, a high thermal sealing temperature can produce a large waste of energy, and on the other hand, a gas (acetic acid gas) that is harmful to the environment is likely to be generated under high temperature sealing. Therefore, it is necessary to study a thermal Solid-sealed packaging materials can not only save energy, but also reduce harmful gases generated during the production process

Method used

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  • A kind of manufacturing process of paper-plastic composite film for food packaging
  • A kind of manufacturing process of paper-plastic composite film for food packaging
  • A kind of manufacturing process of paper-plastic composite film for food packaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A manufacturing process of paper-plastic composite film for food packaging, comprising the following steps:

[0029] 1) Selection of raw materials:

[0030] A. The base material is double-sided high-quality coated paper, and the weight of the coated paper can be selected at 90g / m according to different products 2 , the smoothness is 600s. The coated paper (this embodiment is quantitative 90g / m2) that reaches standard through testing 2 ) is loaded on the unwinding table of laminating machine, and the appropriate unwinding tension is adjusted (the present embodiment is 30kg);

[0031] B. The resin of the bottom film is selected from low-density polyethylene (LDPE resin), and its melt index is above 6;

[0032] C. EVA resin is selected as the resin of the heat-drenched sealing film, and the vinyl acetate content of the EVA resin is lower than 5%.

[0033] 2) Coating: Laminating is carried out in two sections on the laminating machine in the double-die head division sec...

Embodiment 2

[0050] A manufacturing process of paper-plastic composite film for food packaging, comprising the following steps:

[0051] 1) Selection of raw materials:

[0052] A. The base material is double-sided high-quality coated paper, and the weight of the coated paper is selected at 120g / m 2 , the smoothness is 800s. The coated paper (this embodiment is quantitative 120g / m2) that reaches standard through testing 2 ) is loaded on the unwinding table of laminating machine, and the appropriate unwinding tension is adjusted (the present embodiment is 30kg);

[0053] B. The resin of the bottom film is selected from low-density polyethylene (LDPE resin), and its melt index is above 6;

[0054] C. EVA resin is selected as the resin of the heat-drenched sealing film, and the vinyl acetate content of the EVA resin is lower than 5%.

[0055] 2) Coating: Laminating is carried out in two sections on the laminating machine in the double-die head division section. The stretch ratio of the lam...

Embodiment 3

[0072] A manufacturing process of paper-plastic composite film for food packaging, comprising the following steps:

[0073] 1) Selection of raw materials:

[0074] A. The base material is double-sided high-quality coated paper, and the weight of the coated paper can be selected at 150g / m according to different products 2 , the smoothness is 1000s. The coated paper (this embodiment is quantitative 150g / m2) that reaches standard through testing 2 ) is loaded on the unwinding table of laminating machine, and the appropriate unwinding tension is adjusted (the present embodiment is 30kg);

[0075] B. The resin of the bottom film is selected from low-density polyethylene (LDPE resin), and its melt index is above 6;

[0076] C. EVA resin is selected as the resin of the heat-drenched sealing film, and the vinyl acetate content of the EVA resin is lower than 5%.

[0077] 2) Laminating: Laminating is performed twice on a single-sided laminating machine, and the stretch ratio of the ...

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Abstract

The invention discloses a manufacturing technology of a paper-plastic composite membrane for food packaging. The manufacturing technology comprises the following steps: (1) selecting raw materials, namely, A. adopting two-sided art paper as a base material; B. selecting low-density polyethylene (LDPE) resin for spraying a bottom membrane; C. selecting ethylene vinyl-acetate copolymer (EVA) resin for spraying a thermosetting sealing membrane; (2) spraying the membranes: namely, spraying the membranes in two times on a single-sided membrane spray machine, or spraying the membrane in two stages on the membrane spray machine at a double-die-head labor division section, wherein the concrete process comprises the following steps: (2-1) carrying out corona treatment for the first time; (2-2) spraying the bottom membrane to obtain the first composite base material; (2-3) carrying out corona treatment for the second time; (2-4) spraying the thermosetting sealing membrane to obtain the second composite base material; (3) winding the second composite base material to obtain the paper-plastic composite membrane. The paper-plastic composite membrane manufactured by the technology is high in stability, low in thermosetting sealing temperature and low in pollution.

Description

technical field [0001] The invention relates to a manufacturing process of a paper-plastic composite film, in particular to a manufacturing process of a paper-plastic composite film for food packaging. Background technique [0002] At present, the commonly used food packaging heat-sealing paper-plastic composite films in the market are made of PE paper-plastic composite films. Due to the high melting point of PE, the temperature during heat-sealing is as high as 130°C-140°C. On the one hand, a high thermal sealing temperature can produce a large waste of energy, and on the other hand, a gas (acetic acid gas) that is harmful to the environment is likely to be generated under high temperature sealing. Therefore, it is necessary to study a thermal Solid-sealed packaging materials can not only save energy, but also reduce harmful gases generated during the production process. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the object of the pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/10B32B37/06B32B38/00B32B27/10B32B27/08B32B27/32B32B27/30
CPCB32B27/08B32B27/10B32B27/30B32B27/32B32B37/06B32B37/10B32B38/0008
Inventor 朱锦佐潘大满
Owner FOSHAN NANHAI DISTRICT XINYONGTAI ADHESIVE PROD CO LTD