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Preparation method of high-transparency self-adhesive PBAT preservative film

A fresh-keeping film and transparent technology, applied in the polymer field, can solve problems such as white pollution, achieve the effect of improving anti-fogging, simplifying production process, and accelerating molding

Inactive Publication Date: 2020-07-28
ANHUI JUMEI BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a preparation method of highly transparent self-adhesive PBAT cling film, solve the above problems, and improve the white pollution problem caused by the use of cling film

Method used

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  • Preparation method of high-transparency self-adhesive PBAT preservative film

Examples

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Comparison scheme
Effect test

Embodiment 1

[0021] This embodiment discloses a method for preparing a highly transparent self-adhesive PBAT preservative film, comprising the following steps:

[0022] S1. In terms of parts by weight, add 95.5 parts of PBAT and 3 parts of ACR into the high-speed mixer, stir at 200r / min, then slowly add 0.5 parts of glycerin and stir at 200r / min for two minutes, then add 2 Parts of fatty acid esters of glycerol were stirred for 3 min at a rotating speed of 200r / min to obtain a homogeneously mixed material.

[0023] S2. Put the mixed material into a twin-screw extruder with a length-to-diameter ratio of 52:1, and obtain pellets for making plastic wrap after extrusion, stripping, cooling, and pelletizing; twin-screw extruder barrel The temperature was 150°C and the die temperature was 160°C.

[0024] S3. Put the obtained pellets into a film blowing machine, and obtain a highly transparent self-adhesive PBAT preservative film through extrusion, inflation, traction, cooling, and winding. The ...

Embodiment 2

[0028] This embodiment discloses a method for preparing a highly transparent self-adhesive PBAT preservative film, comprising the following steps:

[0029] S1. In terms of parts by weight, add 92.2 parts of PBAT and 5 parts of ACR into the high-speed mixer, stir at 200r / min, then slowly add 0.8 parts of glycerin, stir at 200r / min for 2min, then add 2 Parts of fatty acid esters of glycerol were stirred for 3 min at a rotating speed of 200r / min to obtain a homogeneously mixed material.

[0030] S2. Put the mixed material into a twin-screw extruder with a length-to-diameter ratio of 52:1, and obtain pellets for making plastic wrap after extrusion, stripping, cooling, and pelletizing; twin-screw extruder barrel The temperature was 140°C and the die temperature was 155°C.

[0031] S3. Put the obtained pellets into a film blowing machine, and obtain a highly transparent self-adhesive PBAT preservative film through extrusion, inflation, traction, cooling, and winding. The barrel tem...

Embodiment 3

[0034] This embodiment discloses a method for preparing a highly transparent self-adhesive PBAT preservative film, comprising the following steps:

[0035] S1. In terms of parts by weight, add 88 parts of PBAT and 8 parts of ACR into the high-speed mixer, stir at 200r / min, then slowly add 1 part of glycerin, stir at 200r / min for 2min, then add 3 Parts of fatty acid esters of glycerol were stirred for 3 min at a rotating speed of 200r / min to obtain a homogeneously mixed material.

[0036] S2. Put the mixed material into a twin-screw extruder with a length-to-diameter ratio of 52:1, and obtain pellets for making plastic wrap after extrusion, stripping, cooling, and pelletizing; twin-screw extruder barrel The temperature was 155°C and the die temperature was 170°C.

[0037] S3. Put the obtained pellets into a film blowing machine, and obtain a highly transparent self-adhesive PBAT preservative film through extrusion, inflation, traction, cooling, and winding. The barrel temperat...

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Abstract

The invention discloses a preparation method of a high-transparency self-adhesive PBAT preservative film. The high-transparency self-adhesive PBAT preservative film comprises the following raw materials: PBAT, ACR, glycerin and glycerin fatty acid ester. The preparation method comprises the steps of material mixing, material particle manufacturing, film blowing and film rolling. According to the invention, the ACR is added into PBAT resin, so the ductility, the retractility and the winding smoothness of the PBAT preservative film are improved; the glycerin can improve the extrusion stability,the softness and the adhesion of the PBAT preservative film; the glycerin fatty acid ester can improve the antifogging property of the PBAT preservative film; and meanwhile, the glycerin and glycerinfatty acid can achieve a synergistic effect, so the anti-fog effect of the PBAT preservative film is further enhanced. The prepared PBAT preservative film is excellent in physical property, high in transparency, high in adhesion, high in retractility, smooth in winding, free of wrinkles and good in air permeability.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a preparation method of a highly transparent self-adhesive PBAT preservative film. Background technique [0002] At present, most of the plastic wraps on the market are non-biodegradable PE and PVC plastic wraps. PVC plastic wraps contain plasticizer dioctyl adipate (DEHA). The World Wide Fund for Nature has listed the substance as a substance that may damage the human endocrine system. Some European countries, Japan, and South Korea have banned the use of PVC cling film, and my country has also begun to ban the use of PVC cling film. PE cling film has poor flexibility, poor retractability, and poor adhesion, and PE and PVC cling films will produce white pollution after being discarded, which seriously damages the ecological environment. [0003] PBAT is a thermoplastic biodegradable plastic, which is a copolymer of butylene adipate and butylene terephthalate. PBAT has good du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L67/02C08L33/04C08K5/053C08K5/103B29D7/01
CPCC08J5/18B29D7/01C08J2367/02C08J2433/04C08K5/053C08K5/103B29B7/005B29B7/10B29B9/06B29B9/16B29B9/12C08J2333/00C08J2367/08B29B7/48B29B7/826B29C2948/92209B29C48/40B29K2067/00C08J3/12C08J2333/08C08K5/10C08L33/08C08L67/02C08L2201/06C08L2201/10C08L2201/14C08L2203/16C08L2207/04
Inventor 洪若静韩路坤唐成文鲁帆
Owner ANHUI JUMEI BIOLOGICAL TECH
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