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Color biaxially-oriented polypropylene (BOPP) film and production process thereof

A color and film technology, applied in the direction of layered products, other household appliances, synthetic resin layered products, etc., can solve the problems of high cost, single variety, time-consuming and labor-intensive, etc., to reduce processing costs, print beautifully, reduce Effects of Solvent Contamination

Inactive Publication Date: 2013-02-13
SUQIAN GETTEL PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since BOPP film is a colorless film with a single variety, in the plastic color printing industry, full color printing of BOPP is used to increase the color, which is not only time-consuming and labor-intensive, but also high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: Three-layer die head, non-corona surface layer with color masterbatch, single color.

[0019] Take 18 micron printing bags as an example:

[0020] The surface layer A is: 95% homopolymer PP or random PP + 3% color masterbatch + 2.0% anti-sticking agent;

[0021] Core layer B is: 97.5% homopolymer PP + 2% antistatic agent + 0.5% slip agent;

[0022] The surface layer C is: 97.7% homopolymer PP or random PP + 2.3% anti-sticking agent.

[0023] The thickness distribution of each layer: the surface layer A is 2 microns, the core layer B is 15 microns, and the surface layer C is 1 micron.

[0024] The above raw materials are mixed, melt-extruded, cast, longitudinally stretched, transversely stretched, drawn and trimmed, rolled, and then cut into finished products. The extrusion temperature in the melt-extruded process is 190-260°C. The temperature of the die head is 248°C; the temperature of the quenching roller and the water tank during the casting process ...

Embodiment 2

[0025] Embodiment 2: A three-layer die head, with different color masterbatches added to the two surface layers to produce different color effects.

[0026] The two surface layers have different colors, and produce different luster effects under the action of different light. Make the contents of the package more attractive. Take the 23 micron yellow-blue two-color film as an example:

[0027] Surface layer A is 95% homopolymer PP or random PP + 3% yellow masterbatch + 2.0% anti-sticking agent;

[0028] Core layer B is 97.5% homopolymer PP + 2% antistatic agent + 0.5% slip agent;

[0029] The surface layer C is 97.7 homopolymer PP or random PP + 3% blue masterbatch + 2.3% anti-sticking agent.

[0030] The thickness distribution of each layer: the surface layer A is 2 microns, the core layer B is 19 microns, and the surface layer C is 2 microns.

[0031] The above raw materials are mixed, melt-extruded, cast, longitudinally stretched, transversely stretched, drawn and trimm...

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Abstract

The invention discloses a color biaxially-oriented polypropylene (BOPP) film which comprises a layer A, a layer B and a layer C. The layer A and the layer C are surface layers, the layer B is a core layer, and the layer A comprises 92-99.0% of homopolymerization propene polymer (PP) or random PP, 0.5-5% of color concentrate and 0.5-3% of anti-adhesion agent; the layer B comprises 92-100% of homopolymerization PP, 0-5% of color concentrate and 0-3% of antistatic agent and slipping agent; the layer C comprises 92-99.0% of homopolymerization PP or random PP, 0.5-5% of color concentrate and 0.5-3% of anti-adhesion agent. The color BOPP film is produced through the steps of material mixing, melt extrusion, casting, longitudinal stretching, transverse stretching, dragging and side cutting, rolling, slitting, finished product forming and the like. Through the production process of the color BOPP film, the solvent pollution caused by film printing and pre-coating is reduced, the processing expenses and the cost are reduced, and environment-friendly effect is achieved. Simultaneously, the color of the film does not fade and is firm and more beautiful than the color of a film produced in a printing manner.

Description

technical field [0001] The invention relates to a colored BOPP film and a production process thereof, belonging to the field of colored packaging. Background technique [0002] The production of BOPP film is to first make the melt of high molecular weight polypropylene through a narrow and long die into a sheet or a thick film, and then in a special stretching machine, at a certain temperature and a set speed, simultaneously or step by step A film made by stretching in two vertical directions (longitudinal and transverse) and undergoing appropriate cooling or heat treatment or special processing (such as corona, coating, etc.). BOPP film is a very important flexible packaging material. BOPP film is colorless, odorless, tasteless, non-toxic, and has high tensile strength, impact strength, rigidity, toughness and good transparency. [0003] Since BOPP film is a colorless film with a single variety, in the plastic color printing industry, full color printing of BOPP is used to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/18B32B27/32B29C69/02B29C47/92B29C55/12B29L7/00B29C48/92
CPCB29C48/92B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 喻世华徐登赛
Owner SUQIAN GETTEL PLASTIC IND
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