Temperature-resistant shallow stretch film and production method thereof

A production method and technology of stretching film, which are applied in chemical instruments and methods, layered products, other household appliances, etc., can solve the problems of easy distortion of appearance, small stretchability, poor temperature resistance, etc., to solve wrinkling, improve Good stiffness and temperature resistance

Active Publication Date: 2018-04-10
湖北慧狮塑业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a temperature-resistant shallow stretch film and its production method, which are used to solve the existing technical problems of poor temperature resistance, small stretchability, easily distorted appearance, and high cost.

Method used

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  • Temperature-resistant shallow stretch film and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The production method of the temperature-resistant shallow stretch film includes the following steps: (1) Adding materials, the lower layer is composed of 100% homopolymerized PP, the inner layer is composed of 97.1 parts by weight of homopolymerized PP, and 0.1 parts by weight of β crystal nucleation agent (TMB-5), 0.8 parts by weight of slip agent (GL5068PPR) and 2 parts by weight of ema plastic (1820AC), the surface layer is composed of 95.1 parts by weight of homopolymer PP, 0.1 parts by weight of β crystal nucleating agent ( TMB-5), 1 part by weight of PPR organic release agent (AB6064), 1 part by weight of silicone, 1 part by weight of poly-4-methyl-1-pentene (MX002), 1.5 parts by weight of cyclic poly Olefin (790R), 0.3 parts by weight of ethylene-α-octene copolymer; the materials of the mixed lower layer, inner layer and surface layer are respectively added to the three barrels of the co-extruder;

[0015] (2) Heating. The materials in the three barrels of the c...

Embodiment 2

[0020] The production method of the temperature-resistant shallow stretch film includes the following steps: (1) Adding materials, the lower layer is composed of 100% homopolymerized PP, the inner layer is composed of 93.2 parts by weight of homopolymerized PP, and 0.3 parts by weight of β crystal nucleation agent (TMB-5), 1.5 parts by weight of slip agent (GL5068PPR) and 5 parts by weight of ema plastic (1820AC), the surface layer is composed of 85.5 parts by weight of homopolymerized PP, 0.3 parts by weight of β crystal nucleating agent ( TMB-5), 5 parts by weight of PPR organic release agent (AB6064), 3 parts by weight of silicone, 2.3 parts by weight of poly-4-methyl-1-pentene (MX002), 2.9 parts by weight of cyclic poly Olefin (790R), 1 weight part of ethylene-α-octene copolymer; add the mixed lower layer, inner layer and surface layer materials into the three barrels of the co-extruder respectively;

[0021] (2) Heating. The materials in the three barrels of the co-extrud...

Embodiment 3

[0026] The production method of the temperature-resistant shallow stretch film includes the following steps: (1) Adding materials, the lower layer is composed of 100% homopolymerized PP, the inner layer is composed of 95.8 parts by weight of homopolymerized PP, and 0.2 parts by weight of β crystal nucleation agent (TMB-5), 1.0 parts by weight of slip agent (GL5068PPR) and 3 parts by weight of ema plastic (1820AC), the surface layer is composed of 90.5 parts by weight of homopolymer PP, 0.2 parts by weight of β crystal nucleating agent ( TMB-5), 3 parts by weight of PPR organic release agent (AB6064), 2 parts by weight of silicone, 1.5 parts by weight of poly-4-methyl-1-pentene (MX002), 2.0 parts by weight of cyclic poly Olefin (790R), 0.8 parts by weight of ethylene-α-octene copolymer; the materials of the mixed lower layer, inner layer and surface layer are respectively added to the three barrels of the co-extruder;

[0027] (2) Heating. The materials in the three barrels of ...

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Abstract

Provided are a temperature-resisting shallow-stretching film and a production method thereof. The temperature-resisting shallow-stretching film comprises a thin film, the thin film is composed of a lower layer, an inner layer and a surface layer, the inner layer is located between the lower layer and the surface layer, the lower layer is prepared from, by weight, 100 parts of homopolymerized PP, the inner layer is prepared from, by weight, 88.2-95.1 parts of homopolymerized PP, 0.1-0.3 part of beta crystal form nucleating agent, 0.8-1.5 parts of slipping agent, 2-5 parts of ethylene-octylene copolymer and 2-5 parts of EMA plastic, and the surface layer is prepared from, by weight, 86.5-95.4 parts of homopolymerized PP, 0.1-0.3 part of beta crystal form nucleating agent, 1-5 parts of organic anti-sticking agent, 1-3 parts of organosilicone, 1-2.3 parts of poly(4-methyl-1-amylene) and 1.5-2.9 parts of cyclic polyolefin. The temperature-resisting shallow-stretching film has the advantages of being good in temperature reistance, bright and smooth in appearance, high in stretchability, high in impact resisting strength and piercing strength, capable of being stewed and the like. The temperature-resisting shallow-stretching film is produced in a three-layer co-extrusion curtain coating mode, labor is greatly reduced, and efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the field of new food packaging materials, in particular to a temperature-resistant shallow stretch film and a production method thereof. Background technique [0002] With the development of society, people put forward more and more requirements for the quickness and convenience of life; among them, food is an indispensable item in life, and its changes are changing with each passing day, and more kinds of cooked food come into life. In order to ensure the hygiene and convenience of these cooked foods, various requirements have also been put forward for the packaging of these cooked foods. [0003] In the "Twelfth Five-Year Plan Development Guidance for Technological Progress of the Plastic Processing Industry" issued by the China Plastics Association, it is also clearly pointed out that the development direction of the plastic processing industry is functionalization, lightweight and micro-molding. [0004] At present, the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/18B32B27/32B29D7/01B32B27/16B32B38/18
CPCB29D7/01B29D2009/00B32B27/06B32B27/16B32B27/18B32B27/32B32B38/18B32B2250/03B32B2250/242B32B2307/306B32B2307/406B32B2307/54B32B2307/558B32B2439/70
Inventor 王焕清罗建民刘世超
Owner 湖北慧狮塑业股份有限公司
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