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Thin polyolefin shrink film and production process thereof

A polyolefin and shrink film technology, applied in the field of polyolefin heat shrinkable film, can solve the problems of easy pleating and cutting, difficulty, low heat sealing performance, etc., and achieve the goal of improving heat sealing performance, increasing hardness and good heat sealing performance Effect

Active Publication Date: 2019-10-08
山东联众包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems that the thinner the film, the lower the heat sealing performance, and the difficulty in pleating and cutting during the cutting process, the invention provides a thinner polyolefin shrink film and its production process

Method used

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  • Thin polyolefin shrink film and production process thereof
  • Thin polyolefin shrink film and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The raw materials and weight ratio of the inner and outer surface layers are: ternary random copolymer polypropylene (FS6612 of Singapore TPC Company) 96.5%, anti-sticking agent (ABPOF-4 anti-sticking masterbatch of Jiangsu Jingliang Polymer Materials Co., Ltd.) 2.5%, smooth (Smoothing masterbatch of SPOF07 from Jiangsu Jingliang Polymer Material Co., Ltd.) 1%;

[0019] The raw materials and weight ratio of the intermediate layer are: octa-carbon linear low-density polyethylene (2045G of Dow, USA) 44%, octa-carbon linear low-density polyethylene (2049G of Dow, USA) 40%, metallocene LLDPE (such as Eke Sen's 1018FA) 15% and slip agent (the slip masterbatch of Jiangsu Jingliang Polymer Materials Co., Ltd. SPOF07) 1%.

[0020] Production Process:

[0021] 1) Mixing: Put the selected raw materials into the kneader according to the proportion and mix them evenly. The mixing time is 15 minutes and the rotation speed is 360r / min;

[0022] 2) Plasticizing extrusion: add the uniformly m...

Embodiment 2

[0037] The raw material and weight ratio of the inner and outer surface layers are: ternary random copolymer polypropylene (FS6612 of Singapore TPC Company) 96%, anti-sticking agent (ABPOF-4 anti-sticking masterbatch of Jiangsu Jingliang Polymer Material Co., Ltd.) 3%, smooth (Smoothing masterbatch of SPOF07 from Jiangsu Jingliang Polymer Material Co., Ltd.) 1%;

[0038] The raw materials and weight ratio of the intermediate layer are: eight-carbon linear low-density polyethylene (2045G of Dow, U.S.) 45%, eight-carbon linear low-density polyethylene (2049G of Dow, U.S.) 40%, metallocene LLDPE (such as Eck Sen's 1018FA) 14% and slip agent (the slip masterbatch of Jiangsu Jingliang Polymer Materials Co., Ltd. SPOF07) 1%.

[0039] The production process is the same as in Example 1.

Embodiment 3

[0041] The raw materials and weight ratio of the inner and outer surface layers are: ternary random copolymer polypropylene (FS6612 of Singapore TPC Company) 97%, anti-sticking agent (ABPOF-4 anti-sticking masterbatch of Jiangsu Jingliang Polymer Materials Co., Ltd.) 2%, smooth (Smoothing masterbatch of SPOF07 from Jiangsu Jingliang Polymer Material Co., Ltd.) 1%;

[0042] The raw materials and weight ratio of the intermediate layer are: octa-carbon linear low-density polyethylene (2045G of Dow, USA) 44%, octa-carbon linear low-density polyethylene (2049G of Dow, USA) 41%, metallocene LLDPE (such as Eck Sen's 1018FA) 14% and slip agent (the slip masterbatch of Jiangsu Jingliang Polymer Materials Co., Ltd. SPOF07) 1%.

[0043] The production process is the same as in Example 1.

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Abstract

The invention discloses a thin polyolefin shrink film and a production process thereof. According to the invention, raw materials of inner and outer surface layers and raw materials of an intermediatelayer are prepared by a twice blow-up process, wherein the raw materials of the inner and outer surface layers comprise a ternary random polypropylene copolymer, an anti-sticking agent and a slippingagent; and the raw materials of the intermediate layer comprise octacarbon linear low-density polyethylene, metallocene LLDPE and a slipping agent. According to the invention, through adjustment of aformula and a process, the thickness of a film is reduced, so second bubbles are easier to be formed, and physical and mechanical properties of the film is not lower than the physical and mechanicalproperties of a POF film with a thickness of 10 [mu]m or above; meanwhile, the problems like lower hot-sealing performance with lower thinness of the film and easy pleating and difficult slitting in the process of slitting are overcome.

Description

Technical field [0001] The invention relates to the technical field of polyolefin heat shrinkable film (POF), in particular to a thinner polyolefin shrinkable film (POF) and its production process. Background technique [0002] POF (Polyolefin heat shrinkable film) is a new type of plastic packaging material developed by Italy in the 1990s and has an advanced international level. It is made by plasticizing and extruding polyethylene and polypropylene separately by three or more extruders, compounded by a die, and then processed by secondary foaming. The product has the characteristics of non-toxic, tasteless, environmental protection and light weight, and meets the environmental quality standards of Europe and the United States. It is an updated replacement product of traditional PE, PVC and other films. [0003] With the development of social economy, customers pay more and more attention to cost when using packaging. While not affecting the appearance and quality of the packagi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/08B32B33/00C08L23/16C08K3/36C08K5/20C08L23/08B29C69/00B29L7/00B29L9/00
CPCB29C69/00B29L2007/00B29L2009/00B32B27/08B32B27/18B32B27/32B32B33/00B32B2250/242B32B2307/31B32B2307/412B32B2307/536B32B2307/558C08K3/36C08K5/20C08L23/0815C08L2205/025C08L2205/03C08L23/16
Inventor 李延超张华王皓
Owner 山东联众包装科技有限公司
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