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Production method for universal anti-ultraviolet unoriented polypropylene film

A stretched polypropylene and production method technology, applied in the production field of general UV-resistant unstretched polypropylene film, can solve the problems of short service life, low impact strength and low rigidity of the film, achieve good compatibility, Good resistance to stress cracking and good strength

Inactive Publication Date: 2015-11-11
TONGCHENG FURUN PACKAGING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Unstretched polypropylene film is an unstretched polypropylene film made by casting method. This product has the characteristics of light weight, high transparency, strong mechanical adaptability, moisture resistance and heat resistance, and is widely used in In bread, fiber fabrics and composite packaging materials, unstretched polypropylene film is mainly used as a base material in composite packaging materials, and can be combined with other films. Because of its good heat resistance, it is mostly used for cooking food packaging. The film produced by the unstretched polypropylene film production process on the market is of high quality, low impact strength, low rigidity, and oxidation reaction caused by ultraviolet light, which makes the service life of the film short

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] To produce a film with a thickness of 25 μm, the following steps are used:

[0027] a) Weigh corona layer: 15 parts of PP of F800EDF, core layer: 65 parts of PP of F8001, heat sealing layer: 19.27 parts of PP of FL7623L, 0.64 parts of slip agent, 0.08 parts of antistatic agent, ultraviolet absorber UV -5310.01 parts; mixed in a high-speed mixer for 3 minutes;

[0028] b) Heat and melt the uniformly mixed material in the extruder, the temperature of the die head of the extruder is 245°C, and the temperature of the die lip is 247°C;

[0029] c) The melt extruded from the die lip is attached to the chilled roll at 30-35°C by a high-pressure air knife and chilled in a water bath at 30-35°C to form a cast sheet;

[0030] d) Forming, the temperature of the shaping roller is 40°C, and the temperature of the shaping roller is 25°C in the traditional process. Increase the temperature of the shaping roller to obtain good rigidity and achieve a balance between optical properties ...

Embodiment 2

[0034] To produce a film with a thickness of 30 μm, the following steps are used:

[0035] a) Weigh corona layer: 15 parts of PP of F800EDF; core layer: 65 parts of PP of F8001, heat sealing layer: 19.26 parts of PP of FL7623L, 0.6 parts of slip agent, 0.12 parts of antistatic agent, ultraviolet absorber UV -5310.02 parts, respectively mixed in a high-speed mixer for 3 minutes;

[0036] b) Heat and melt the uniformly mixed material in the extruder, the temperature of the die head of the extruder is 245°C, and the temperature of the die lip is 247°C;

[0037] c) The melt extruded from the die lip is attached to the chilled roll at 30-35°C by a high-pressure air knife and chilled in a water bath at 30-35°C to form a cast sheet;

[0038] d) Forming, the temperature of the shaping roller is 40°C, and the temperature of the shaping roller is 25°C in the traditional process. Increase the temperature of the shaping roller to obtain good rigidity and achieve a balance between optical...

Embodiment 3

[0042] To produce a film with a thickness of 35 μm, the following steps are used:

[0043] a) Weigh corona layer: 15 parts of PP of F800EDF; core layer: 65 parts of PP of F8001, heat sealing layer: 19.25 parts of PP of FL7623L, 0.5 parts of slip agent, 0.22 parts of antistatic agent, ultraviolet absorber UV -5310.03 parts, mixed in a high-speed mixer for 3 minutes;

[0044] b) Heat and melt the uniformly mixed material in the extruder, the temperature of the die head of the extruder is 245°C, and the temperature of the die lip is 247°C;

[0045] c) The melt extruded from the die lip is attached to the chilled roll at 30-35°C by a high-pressure air knife and chilled in a water bath at 30-35°C to form a cast sheet;

[0046] d) Forming, the temperature of the shaping roller is 40°C, and the temperature of the shaping roller is 25°C in the traditional process. Increase the temperature of the shaping roller to obtain good rigidity and achieve a balance between optical properties a...

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Abstract

The invention discloses a production method for a universal anti-ultraviolet unoriented polypropylene film. The production method comprises the following steps: preparing a material which comprises a corona layer, a core layer and a heat sealing layer, forming a cast sheet through proportioning, stirring, heating and melting, and chilling, shaping, measuring a thickness and feeding back the thickness, carrying out corona treatment by using a corona rod, winding, curing, and forming the film by compression moulding. According to the production method disclosed by the invention, ultraviolet rays with wavelengths of 270-330nm can be strongly absorbed by adding an ultraviolet absorbent UV531, and the anti-ultraviolet and anti-oxidative performances of the film can be enhanced; the product subjected to compression moulding of the production method disclosed by the invention is light in mass, high in strength, long in life, high in transparency, wear-resistant, anti-impact, good in stress cracking resistance, and excellent in chemical stability and insulativity, and achieves a balance between optical performances and mechanical performances; the product subjected to compression moulding of the production method disclosed by the invention is light in mass, high in strength, long in life, high in transparency, wear-resistant, anti-impact, good in stress cracking resistance, and excellent in chemical stability and insulativity, and achieves a balance between optical performances and mechanical performances.

Description

technical field [0001] The invention belongs to the field of packaging material production, in particular to a production method of a general anti-ultraviolet unstretched polypropylene film. Background technique [0002] Unstretched polypropylene film is an unstretched polypropylene film made by casting method. This product has the characteristics of light weight, high transparency, strong mechanical adaptability, moisture resistance and heat resistance, and is widely used in In bread, fiber fabrics and composite packaging materials, unstretched polypropylene film is mainly used as a base material in composite packaging materials, and can be combined with other films. Because of its good heat resistance, it is mostly used for cooking food packaging. The film produced by the unstretched polypropylene film production process on the market has high quality, low impact strength, low rigidity, and oxidation reaction caused by ultraviolet light, which makes the service life of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/06B29C47/92B29L7/00B29L9/00C08L23/12B29C48/92
CPCB29C48/18B29C48/92B29L2007/002B29L2009/00C08L23/12C08L2205/025
Inventor 杨峰
Owner TONGCHENG FURUN PACKAGING MATERIAL
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