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A kind of BOPP pre-coating film with high peeling strength and preparation method thereof

A pre-coated film and high-peeling technology, which is applied to chemical instruments and methods, flat products, and other household appliances, etc., to achieve high peeling strength, save manpower, and reduce the effects of human health and atmospheric environment damage

Active Publication Date: 2018-10-12
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a BOPP precoat film with high peel strength and its preparation method, thereby solving the problem of delamination between the composite layer and the substrate layer

Method used

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  • A kind of BOPP pre-coating film with high peeling strength and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0040] 1) According to the following formula, the materials of each layer are mixed evenly, after dust removal and dehumidification, they are heated and melted by 4 extruders, and then merged into the four-layer structure die head in the order of the upper surface layer, middle layer, core layer and functional layer at 260 After extrusion at 22°C, it is cooled by 22°C water to form a cast sheet; the heating and melting temperature of the upper surface layer raw material is 120°C, the heating and melting temperature of the middle layer raw material is 110°C, and the heating and melting temperature of the core layer raw material is 120°C. The heating and melting temperature of the layered layer raw material is 105°C;

[0041] Upper Skin: 96% Homopolypropylene

[0042] 4% Antiblock Polypropylene Masterbatch

[0043] Middle layer: 96% homopolymer polypropylene

[0044] 4% antistatic agent

[0045] Core: 100% Polypropylene homopolymer

[0046] Functional layer: 98% terpolymeriz...

Embodiment 2

[0052]1) According to the following formula, the materials of each layer are mixed evenly and after dedusting and dehumidification, they are heated and melted by 4 extruders respectively, and then merged into the four-layer structure die head in the order of the upper surface layer, middle layer, core layer and functional layer at 245 After extrusion at 25°C, it is cooled by 25°C water to form a cast sheet; the heating and melting temperature of the upper surface layer raw material is 260°C, the heating and melting temperature of the middle layer raw material is 250°C, and the heating and melting temperature of the core layer raw material is 260°C. The heating and melting temperature of the layered layer raw material is 240°C;

[0053] Upper Surface: 97% Homopolypropylene

[0054] 3% Antiblock Polypropylene Masterbatch

[0055] Middle layer: 97% homopolymer polypropylene

[0056] 3% antistatic agent

[0057] Core: 100% Polypropylene homopolymer

[0058] Functional layer: 9...

Embodiment 3

[0064] 1) According to the following formula, the materials of each layer are mixed evenly, after dust removal and dehumidification, they are heated and melted by 4 extruders, and then merged into the four-layer structure die head in the order of the upper surface layer, middle layer, core layer and functional layer at 260 After extrusion at 27°C, the cast sheet is formed by cooling at 27°C; the heating and melting temperature of the upper surface layer is 200°C, the heating and melting temperature of the middle layer is 190°C, and the heating and melting temperature of the core layer is 190°C. The heating and melting temperature of the layered layer raw material is 200°C;

[0065] Upper Surface: 97% Homopolypropylene

[0066] 3% Antiblock Polypropylene Masterbatch

[0067] Middle layer: 96% homopolymer polypropylene

[0068] 4% antistatic agent

[0069] Core: 100% Polypropylene homopolymer

[0070] Functional layer: 98% terpolymerized polypropylene

[0071] 2% Antiblock ...

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Abstract

The invention provides a BOPP pre-coating film with high peel strength and a preparation method of the BOPP pre-coating film. The BOPP pre-coating film is prepared by laminating a BOPP thin film base material and a compound layer, wherein the BOPP thin film base material is of a four-layer structure sequentially consisting of an upper surface layer, a middle layer, a core layer and a functional layer from top to bottom; the upper surface layer is prepared from homo-polypropylene and an anti-sticking polypropylene master batch, and the middle layer is an antistatic agent adding layer and is prepared from homo-polypropylene and an antistatic agent; the core layer is prepared from homo-polypropylene; the functional layer is prepared from ternary co-polypropylene and the anti-sticking polypropylene master batch; and the compound layer is prepared from an ethylene-vinyl acetate polymer. The BOPP pre-coating film prepared by virtue of the preparation method has high peel strength, is relatively environmentally friendly and does not turn yellow along with time, and the holding periods of the appearance and the quality are relatively long.

Description

technical field [0001] The invention relates to the field of flexible packaging materials, in particular to a BOPP (biaxially oriented polypropylene) precoat film with high peel strength and a preparation method thereof. technical background [0002] The pre-coating film technology was born in the late 1980s. Because of its long service life, high composite fastness, simple process, and environmental protection, it has gradually replaced the ready-to-coat technology on a global scale. [0003] The production process of pre-coating film is divided into primer-coating process and primer-free process. As the name implies, the primer-coating process means that the primer is applied during the production process; the primer-free process means that no primer is used during the production process. Among them, the pre-coating film produced by the primer process is yellowed due to the yellowing of the primer, which limits its application range, so the current primer-free process has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/08B32B27/30B29D7/01
CPCB29D7/01B32B27/08B32B27/18B32B27/306B32B27/32
Inventor 张娜娜刘昌民
Owner ANHUI GUOFENG PLASTIC