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Degradable thermal shrinkage film, degradable thermal shrinkage multilayer film and preparation method of degradable thermal shrinkage multilayer film

A heat-shrinkable film and multi-layer film technology, applied in chemical instruments and methods, sustainable manufacturing/processing, lamination, etc., can solve the problem of heat shrinkability of degradable polyester film, insufficient melt strength and water vapor barrier properties, etc. Problems, achieve good fullness, improve barrier properties, and increase the effect of water vapor penetration paths

Active Publication Date: 2022-07-12
JIANGSU JINGHONG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the current degradable polyester film has insufficient performance in heat shrinkability, melt strength, water vapor barrier, etc.

Method used

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  • Degradable thermal shrinkage film, degradable thermal shrinkage multilayer film and preparation method of degradable thermal shrinkage multilayer film
  • Degradable thermal shrinkage film, degradable thermal shrinkage multilayer film and preparation method of degradable thermal shrinkage multilayer film

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Embodiment 1

[0038] The degradable heat-shrinkable multilayer film of this embodiment is composed of a first outer layer, a second outer layer, and an inner layer disposed between the first outer layer and the second outer layer.

[0039] Wherein, the first outer layer and the second outer layer are prepared from the raw materials comprising the following parts by weight: 40 parts of PLA, 30 parts of PBAT, 30 parts of functional adjustment degradable masterbatch, 10 parts of compatibilizer, 6 parts of plasticizer, 1 part of slip agent, and 0.5 part of anti-aging agent;

[0040] The inner layer is prepared from the raw materials comprising the following components and their contents in parts by weight: 40 parts of PLA, 60 parts of PBAT, 10 parts of compatibilizer, 15 parts of soybean powder modified bamboo fiber, 2 parts of chain extender, plasticizer 5 parts, and 3 parts of slip.

[0041] In this embodiment, the used compatibilizer is glycidyl methacrylate grafted PLA, the melt index is abo...

Embodiment 2

[0047] The degradable heat-shrinkable multilayer film of this embodiment is composed of a first outer layer, a second outer layer, and an inner layer disposed between the first outer layer and the second outer layer.

[0048] Wherein, the first outer layer and the second outer layer are prepared from raw materials comprising the following parts by weight: 42 parts of PLA, 40 parts of PBAT, 18 parts of degradable master batches for function adjustment, 10 parts of compatibilizer, 8 parts of plasticizer, 1 part of slip agent, and 0.5 part of anti-aging agent;

[0049] The inner layer is prepared from the raw materials comprising the following components and their contents in parts by weight: 43 parts of PLA, 57 parts of PBAT, 8 parts of compatibilizer, 20 parts of soybean powder modified bamboo fiber, 2 parts of chain extender, plasticizer 6 parts, and 4 parts of slip.

[0050] In this embodiment, the used compatibilizer is glycidyl methacrylate grafted PLA, the melt index is a...

Embodiment 3

[0056] The degradable heat-shrinkable multilayer film of this embodiment is composed of a first outer layer, a second outer layer, and an inner layer disposed between the first outer layer and the second outer layer.

[0057] Wherein, the first outer layer and the second outer layer are prepared from the raw materials comprising the following parts by weight: 45 parts of PLA, 30 parts of PBAT, 25 parts of degradable master batches for function adjustment, 8 parts of compatibilizer, 10 parts of plasticizer, 2 parts of slip agent, and 0.7 part of anti-aging agent;

[0058] The inner layer is prepared from the raw materials comprising the following components and their contents in parts by weight: 46 parts of PLA, 54 parts of PBAT, 7 parts of compatibilizer, 23 parts of soybean powder modified bamboo fiber, 4 parts of chain extender, plasticizer 6 parts, and 5 parts of slip.

[0059] In this embodiment, the used compatibilizer is glycidyl methacrylate grafted PLA, the melt index...

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Abstract

The invention discloses a degradable heat-shrinkable film, a degradable heat-shrinkable multilayer film and a preparation method thereof. The degradable heat-shrinkable film is prepared from the following raw materials in parts by weight: 40-50 parts of PLA, 50-60 parts of PBAT, 5-10 parts of a compatilizer, 15-30 parts of soybean meal modified bamboo fibers, 2-5 parts of a chain extender, 5-10 parts of a plasticizer and 3-5 parts of a slipping agent. The bamboo fibers modified by the soybean meal are uniformly dispersed in the base material resin, so that the bamboo fibers can be effectively prevented from being agglomerated and separated out from the base material, the water vapor permeation path can be effectively increased, and the water vapor barrier property of the degradable heat shrinkage film is further remarkably improved; and the soybean meal modified bamboo fiber is also beneficial to absorption and elimination of internal stress released in the shrinkage process of the base material after being heated, is beneficial to avoiding the phenomenon that the film is easy to crack and even crack due to sudden release of the internal stress in the thermal shrinkage process, and can improve the thermal shrinkage of the film.

Description

Technical field [0001] The invention relates to the technical field of degradable polyester films, and in particular to a degradable heat shrinkable film, a degradable heat shrinkable multilayer film and a preparation method thereof. Background technique [0002] In the field of film material application, degradable heat-shrinkable multi-layer film is the base film for shrink sleeve labels of container beverages, food and other commodities. It can give bottled beverages, food and other commodities packaging 360° label design, by printing exquisite patterns And brilliant colors, after shrinking, labeling and packaging, form a strong visual impact, highlight the perfect image and attractiveness of the products on supermarket shelves, and facilitate brand differentiation design and product marketing. At present, the materials used to prepare degradable heat-shrinkable multi-layer films are usually petrochemical materials, such as PVC (polyvinyl chloride), PS (polystyrene), PETG...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08L87/00C08L51/08C08G81/00C08J5/18B32B27/36B32B27/06B32B27/18B32B27/20B32B38/00
CPCC08J5/18C08G81/00B32B27/36B32B27/08B32B27/18B32B27/20B32B38/0008B32B38/0012C08J2367/02C08J2467/04C08J2487/00C08J2451/08C08J2367/04C08J2467/02B32B2038/0028B32B2250/244B32B2262/065B32B2307/7246B32B2307/552B32B2307/7163B32B2553/00B32B2307/7244Y02W90/10
Inventor 陆银秋吴迪孙大伟黄亚琴吴培龙吴松朱书文徐学凯
Owner JIANGSU JINGHONG NEW MATERIAL TECH
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