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High-transparent high-barrier and easy-taking opening sealing cover membrane and production technology thereof

A high-barrier, sealing cover technology, applied in the direction of layered products, synthetic resin layered products, lamination, etc., can solve the problems of uncontrollable sealing strength, general easy to open performance, general barrier properties, etc., to improve user experience, Solvent-free, excellent moisturizing effect

Active Publication Date: 2019-01-25
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former composite film is a non-transparent film, which is only suitable for sealing polar materials, and has high production costs and difficult processing; the latter composite film is a transparent film with general barrier properties, uncontrollable sealing strength, and general easy-to-remove performance.

Method used

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  • High-transparent high-barrier and easy-taking opening sealing cover membrane and production technology thereof
  • High-transparent high-barrier and easy-taking opening sealing cover membrane and production technology thereof
  • High-transparent high-barrier and easy-taking opening sealing cover membrane and production technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The production process of the high-transparency, high-barrier and easy-to-open cap film of the present invention comprises the following steps:

[0049] Step 1, use plasma vacuum plating technology to vapor-deposit on the PET film to form a film structure: PET film layer / aluminum oxide layer, and then use gravure printing technology to print ink on the surface of the aluminum oxide layer to form a film structure: PET film layer / Aluminum oxide layer / ink layer.

[0050] The process of plasma vacuum plating technology is as follows: first, install the roll film of PET film base material to be aluminized in the vacuum evaporation machine, use a vacuum pump to evacuate the vacuum in the evaporation chamber to 10Pa, and set the unwinding speed of PET film base material 10±2m / s, unwinding tension 380-450N, the PET film substrate moves to the plasma processor, and the power of the plasma processor is set to 2±1kW; then the PET film substrate reaches the evaporation chamber, an...

Embodiment 2

[0061] Same as Example 1, only adjustments are made on the formula of the film layer, as shown in Table 2 below:

[0062] Table 2

[0063]

Embodiment 3

[0065] Same as Example 1, only adjustments are made on the formula of the film layer, as shown in Table 2 below:

[0066] table 3

[0067]

[0068]

[0069] The properties of the high transparency, high barrier and easy-to-open lid film prepared in the above examples, traditional ethylene-vinyl acetate copolymer EVA composite film (PET / AL / EVA) and elastomer composite film (BOPA / EVOH co-extrusion film / PT1450) The comparison of technical indicators is shown in Table 4 below:

[0070] Table 4

[0071]

[0072] The comparison results of the comprehensive evaluation of the easy-to-remove performance of the high-transparency, high-barrier and easy-to-remove lid film prepared in the above examples with traditional ethylene-vinyl acetate copolymer (EVA) composite films and elastomer composite films are shown in Table 5 below:

[0073] table 5

[0074]

[0075] Compared with other cover materials, the product of the present invention has the characteristics of high trans...

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Abstract

The invention relates to a high-transparent high-barrier and easy-taking opening sealing cover membrane and a production technology thereof. The membrane layer structure of the membrane sequentially comprises a PET membrane layer, an alumina coating layer, an oil ink layer, an adhesive layer and an EVOH co-extrusion membrane layer from outside to inside; and the EVOH co-extrusion membrane layer comprises a compound layer A, a sub outer layer B, a binding layer C, a middle layer D, a binding layer E, a sub outer layer F and a hot sealing layer G. The high-transparent high-barrier and easy-taking opening sealing cover membrane is obtained through innovation on the EVOH co-extrusion membrane layer formula. The membrane product has the high transparency and low haze, can well display the packed content and attracts consumers. The alumina coating PET and the EVOH co-extrusion membrane layer jointly form a double-barrier layer, so that the membrane has the outstanding moisturizing, air barrier and fragrance preserving functions, and provides safety guarantee to food. A polybutylene easy-taking layer in the hot sealing layer G can be well sealed with various kinds of materials such as PP,PE and PS, the controllable peeling strength can be guaranteed, and the user experience of the consumers is greatly improved.

Description

technical field [0001] The invention belongs to the field of packaging film materials, and in particular relates to a high-transparency, high-barrier and easy-to-remove lid film and a production process thereof. Background technique [0002] At present, quite a lot of food on the market, such as low-temperature yogurt, jelly, cooked food, fresh fruit, etc., is packaged in the form of cups or trays. Cups or trays need to use sealing lid materials, most of which are composite films. For ease of use by consumers, most lid materials are required to have easy-peel properties. At present, the domestic easy-to-remove cup lid films all use composite films, and the sealing layer in the composite films uses films with easy-to-remove functions, such as ethylene-vinyl acetate copolymer (EVA) films, or elastomer materials. Ethylene-vinyl acetate copolymer (EVA) films are mostly combined with barrier materials such as Al (VMPET) to form composite films. The production cost is high and pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/36B32B27/30B32B37/12B32B27/06B32B27/32
CPCB32B27/08B32B27/30B32B27/32B32B27/36B32B37/12
Inventor 胡凯张和平汪学文潘安定刘学军
Owner HUANGSHAN NOVEL
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