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High-quality card protection membrane and preparation method thereof

A card protection film, high-quality technology, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of air bubbles, poor card protection film overmolding effect, etc.

Pending Publication Date: 2018-08-14
惠州艺都文化用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem of poor plastic effect and air bubbles of the above-mentioned card protection film, the present invention provides a high-quality card protection film with embossed surface and a preparation method thereof

Method used

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  • High-quality card protection membrane and preparation method thereof
  • High-quality card protection membrane and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0019] Implementation mode one: if figure 1 Shown, a kind of high-quality protective card film is made up of BOPET polyester film layer 1, polyethylene film layer 2 and EVA vinyl acetate copolymer film layer 3 successively, on the described EVA vinyl acetate copolymer film layer Permanent embossing is provided, and the permanent embossing is a rhombus lattice pattern 4 . The polyethylene film layer is an LDP low density polyethylene film layer. The preparation steps of the protective card film are;

[0020] A: The BOPET polyester film layer is prepared by biaxially stretching the BOPET polyester substrate;

[0021] B: The polyethylene melt flows out to the BOPET polyester film layer in step A through the mold, and is cooled by rollers, stretched and calendered to form a polyethylene film layer attached to the BOPET polyester film layer;

[0022] C: The melt of EVA vinyl acetate copolymer flows out to the polyethylene film layer in step B through the mold, and is cooled by r...

Embodiment approach 2

[0025] Embodiment 2: Different from Embodiment 1, the polyethylene melt is an LLDPE linear low-density polyethylene melt, and the polyethylene film layer is an LLDPE linear low-density polyethylene film layer.

Embodiment approach 3

[0026] Implementation mode three: if figure 2 As shown, on the basis of Embodiment 1, equidistant vertical and horizontal scale lines 5 are also provided on the card protection film. The surface of the roller in the step C is also provided with equidistant vertical and horizontal scale convex lines.

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Abstract

The invention relates to a card protection membrane sealed by plastic, in particular to a card protection membrane with better performance and high quality and a preparation method thereof. The card protection membrane is composed of a BOPET polyester membrane layer, a polyethylene membrane layer and an EVA vinyl acetate copolymer membrane layer. Constant embossing patterns are arranged on the EVAvinyl acetate copolymer membrane layer and are diamond-type lattice patterns. During laminating of several card protection membranes, air is reserved between the card protection membranes through thediamond-type lattice patterns, and during use, the membranes are easy to separate and cannot be bonded to each other; when actual plastic sealing sheet materials are coated by plastic, air between the card protection membranes is exhausted to the exterior of the plastic sealing sheet materials along the lattice patterns, and therefore bubbles cannot be sealed by plastic on the surfaces or brims of the plastic sealing sheet materials. According to the preparation method of the card protection membrane, on the basis of an original preparation process, the diamond-type convex lattice patterns are arranged on the surfaces of rollers, correlated process parameters are controlled, cooling and stretching are conducted by the rollers, rolling and combined trimming are carried out, and the processis simple and reliable without environmental pollution.

Description

technical field [0001] The invention relates to a plastic sealing card protection film, in particular to a high-quality card protection film with better performance and a preparation method thereof. Background technique [0002] Card protection film, also known as plastic sealing film, is a high-grade sheet packaging material made of plastic film as the substrate, coated with adhesive on the back of the substrate, and then specially processed. It is widely used in ID cards, cultural and historical materials, photos, etc. , Pictures, credit cards, licenses, business licenses, precious letters, securities, passports, representative cards and other sheet materials are sealed and protected. Excellent functions such as change and corrosion resistance, not only beautiful, but also improve the clarity. The processed card protection films are packed in layers. The surface of the existing card protection film is smooth. When used, the adhesion between the card protection film and th...

Claims

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Application Information

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IPC IPC(8): B32B27/36B32B27/32B32B27/08B32B27/30B32B3/30
CPCB32B3/30B32B27/08B32B27/306B32B27/32B32B27/36
Inventor 李玉成
Owner 惠州艺都文化用品有限公司
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