A kind of thinner polyolefin shrink film and its production process

A production process and polyolefin technology, applied in the field of thinner polyolefin shrink film and its production process, can solve the problems of difficulty, low heat sealing performance, easy pleating and slitting, etc., to increase hardness, improve heat sealing performance, good transparency

Active Publication Date: 2021-08-17
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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  • A kind of thinner polyolefin shrink film and its production process
  • A kind of thinner polyolefin shrink film and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0019] The raw material and weight ratio of the middle layer are: eight-carbon linear low-density polyethylene (2045G of U.S. Dow) 44%, eight-carbon linear low-density polyethylene (2049G of U.S. Dow) 40%, metallocene LLDPE (such as Exec Mori's 1018FA) 15% and slip agent (SPOF07 smooth masterbatch of Jiangsu Jingliang Polymer Material Co., Ltd.) 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 speed is 360r / min;

[0022] 2) Plasticizing extrusion: Add the uniformly mixed inne...

Embodiment 2

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

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

[0039] Production technology is with embodiment 1.

Embodiment 3

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

[0042] The raw material and weight ratio of the middle layer are: eight-carbon linear low-density polyethylene (2045G of American Dow) 44%, eight-carbon linear low-density polyethylene (2049G of American Dow) 41%, metallocene LLDPE (such as Exec Mori's 1018FA) 14% and slip agent (the smooth masterbatch of SPOF07 of Jiangsu Jingliang Polymer Material Co., Ltd.) 1%.

[0043] Production technology is with embodiment 1.

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Abstract

The invention discloses a relatively thin polyolefin shrink film and its production process. The present invention adopts the raw materials of the inner and outer layers and the raw materials of the middle layer to be prepared through a secondary inflation process, wherein the raw materials of the inner and outer layers are: ternary random copolymer polypropylene, anti-sticking agent and smooth agent; the middle layer The raw materials are: eight-carbon linear low-density polyethylene, metallocene LLDPE and slip agent. The present invention reduces the thickness of the film through formulation and process adjustment, making it easier for the second bubbles to form bubbles, and the physical and mechanical properties of the POF film are not lower than 10 μm in all aspects, and overcome the thinner the film, the lower the heat sealing performance, and During the slitting process, it is easy to pleat and slitting is difficult.

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 a production process thereof. Background technique [0002] POF (polyolefin heat shrinkable film) is a new type of plastic packaging material developed in Italy in the 1990s, with advanced international standards. It is plasticized and extruded by three or more extruders separately for polyethylene and polypropylene, compounded by a die head, and then processed by secondary foaming. The product has the characteristics of non-toxic, odorless, environmental protection, light weight, etc., and meets the environmental quality standards of Europe and the United States. It is an updated replacement product for traditional PE, PVC and other membranes. [0003] With the development of social economy, customers pay more and more attention to cost when using packaging materials. While not affecting the appearanc...

Claims

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Application Information

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Patent Type & Authority Patents(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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