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Flexible thermoplastic film and product thereof

A thermoplastic starch, polar technology, applied in the field of composition of flexible polyolefin base film, can solve the problems of increasing production cost, reducing line speed, poor processability of renewable polymers, etc., to reduce energy input and greenhouse gas Emissions, skin comfort, effect of reducing global warming effect

Inactive Publication Date: 2010-11-17
KIMBERLY-CLARK WORLDWIDE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor processability of 100% renewable polymer also increases production cost due to reduced line speed etc.

Method used

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  • Flexible thermoplastic film and product thereof
  • Flexible thermoplastic film and product thereof
  • Flexible thermoplastic film and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0130] 17% thermoplastic starch masterbatch (BL-F, produced by Biograde, Nanjing, China), 38% linear low density polyethylene (LLDPE) (melt flow rate is 1.0 g / 10 min, density is 0.918 g / cc, grade: 118W, supplied by SABIC), 38% low-density polyethylene (LDPE) (melt flow rate: 2.8g / 10min, density: 0.925g / cc, grade: Q281, supplied by SINOPEC Shanghai, Shanghai , China) and a mixture of 7% white masterbatch (Shanghai Ngai Hing Plastic Materials Co., Ltd.) were fed to a single-screw extruder blown film machine. The screw diameter is 150 mm and the length / diameter ratio is 30 / 1. The mold gap is 1.8mm.

[0131] Other process conditions are listed in the table below:

[0132]

Embodiment 2

[0134] 37% thermoplastic starch masterbatch (BL-F, produced by Biograde, Nanjing, China), 28% linear low density polyethylene (LLDPE) (melt flow rate is 1.0 g / 10 min, density is 0.918 g / cc, grade: 118W, supplied by SABIC), 28% low-density polyethylene (LDPE) (melt flow rate: 2.8g / 10min, density: 0.925g / cc, grade: Q281, supplied by SINOPEC Shanghai, Shanghai , China) and a mixture of 7% white masterbatch (Shanghai Ngai Hing Plastic Materials Co., Ltd.) were fed to a single-screw extruder blown film machine. The screw diameter is 150 mm and the length / diameter ratio is 30 / 1. The mold gap is 1.8mm.

Embodiment 3

[0136] 57% thermoplastic starch masterbatch (BL-F, produced by Biograde, Nanjing, China), 18% linear low density polyethylene (LLDPE) (melt flow rate is 1.0 g / 10 min, density is 0.918 g / cc, grade: 118W, supplied by SABIC), 18% low-density polyethylene (LDPE) (melt flow rate: 2.8g / 10min, density: 0.925g / cc, grade: Q281, supplied by SINOPEC Shanghai, Shanghai , China) and a mixture of 7% white masterbatch (Shanghai Ngai Hing Plastic Materials Co., Ltd.) were fed to a single-screw extruder blown film machine. The screw diameter was 150 mm and the length / diameter ratio was 30 / l. The mold gap is 1.8mm.

[0137] Blow molding machine conditions:

[0138] The process conditions of the blown film extruder are as follows:

[0139]

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Abstract

The invention discloses a biodegradable polyolefin base material composition doped with thermoplastic starch granules. The material comprises 5-45% of thermoplastic starch (TSP), about 55-95% of polyolefin or polyolefin mixture and 0.5-8% of compatibilizer which has nonpolar framework and polar functional monomer or embedding section copolymer of nonpolar embedding section and polar embedding section. The invention also provides a film forming method and a packaging component prepared by the polymer material.

Description

technical field [0001] The present invention relates to compositions for flexible polyolefin-based films comprising thermoplastic starch. In particular, the present invention relates to packaging films comprising polyolefins, renewable polymers and compatibilizers, and describes a method of overcoming their material incompatibility to produce packaging films with desired physical and mechanical properties. Background technique [0002] In recent years, as petroleum resources have become more scarce or expensive, and manufacturers and consumers alike have become more aware of the need for environmental sustainability, there has been a growing demand for biodegradable materials containing renewable and / or natural polymers for various uses. and interest in renewable membranes has increased. However, currently available renewable polymers such as polylactic acid (PLA), polyhydroxyalkanoate (PHA), thermoplastic starch (TPS), etc., have deficiencies in preparing thin flexible pac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08L3/02C08L3/04C08K5/053C08L23/06C08L23/08B29C47/00
CPCC08L3/02C08L23/08C08K5/0008C08J2303/00C08J5/18C08L23/04C08J2323/04C08L23/0815C08L2203/162C08L2205/025C08L2310/00Y10T428/24355C08L2666/02C08L3/04
Inventor 王洪学P·M·克拉克管亦武王岩郝学恩张彤彤
Owner KIMBERLY-CLARK WORLDWIDE INC
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