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Environment-friendly degradable composite film for packaging and preparation method thereof

An environmentally friendly, composite film technology, applied in the field of packaging materials, can solve the problems of poor tensile strength, elongation at break, poor water resistance, limited wide application, etc., achieve good compatibility, reduce costs, and improve compatibility and interface. adhesive effect

Active Publication Date: 2019-01-18
江西中聚宏新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tensile strength, elongation at break, and water resistance of polyvinyl alcohol films are poor, which limits its wide application in the field of degradable composite films. It is necessary to modify polyvinyl alcohol to expand the scope of application.

Method used

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  • Environment-friendly degradable composite film for packaging and preparation method thereof
  • Environment-friendly degradable composite film for packaging and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] refer to figure 1 As shown, an environmentally friendly degradable composite film for packaging in this embodiment includes a first modified polyvinyl alcohol layer 1, an insulating layer 2, a titanium dioxide fireproof layer 3, and a polyethylene composite layer that are sequentially bonded from outside to inside. 4. The second modified polyvinyl alcohol layer 5 and the PET release film layer 6 .

[0038] Wherein, the insulating layer includes 40-50wt% polyesterimide and 50-60wt% polyamideimide, and its thickness is 0.5-0.8mm. The titanium dioxide fireproof layer includes the following raw materials in parts by weight: 105 parts of nano-titanium dioxide, 36 parts of hollow glass microspheres, 12 parts of maleic anhydride grafted polyethylene copolymer, 7 parts of chlorinated palm oil methyl ester; maleic anhydride grafted polyethylene The copolymer is formed by mixing 90wt% maleic anhydride and 10wt% polyethylene.

[0039] The preparation method of titanium dioxide f...

Embodiment 2

[0050] An environment-friendly degradable composite film for packaging in this embodiment includes a first modified polyvinyl alcohol layer, an insulating layer, a titanium dioxide fireproof layer, a polyethylene composite layer, a second modified polyvinyl alcohol layer, and a second modified polyvinyl alcohol layer bonded sequentially from outside to inside. Vinyl alcohol layer, PET release film layer.

[0051] Wherein, the insulating layer includes 40-50wt% polyesterimide and 50-60wt% polyamideimide, and its thickness is 0.5-0.8mm. The titanium dioxide fireproof layer includes the following raw materials in parts by weight: 112 parts of nano-titanium dioxide, 35 parts of hollow glass microspheres, 17 parts of maleic anhydride grafted polyethylene copolymer, 8 parts of chlorinated palm oil methyl ester; maleic anhydride grafted polyethylene The copolymer is formed by mixing 90wt% maleic anhydride and 10wt% polyethylene. The preparation method of the titanium dioxide firepro...

Embodiment 3

[0057] An environment-friendly degradable composite film for packaging in this embodiment includes a first modified polyvinyl alcohol layer, an insulating layer, a titanium dioxide fireproof layer, a polyethylene composite layer, a second modified polyvinyl alcohol layer, and a second modified polyvinyl alcohol layer bonded sequentially from outside to inside. Vinyl alcohol layer, PET release film layer.

[0058] Wherein, the insulating layer includes 40-50wt% polyesterimide and 50-60wt% polyamideimide, and its thickness is 0.5-0.8mm. The titanium dioxide fireproof layer includes the following raw materials in parts by weight: 117 parts of nano-titanium dioxide, 38 parts of hollow glass microspheres, 17 parts of maleic anhydride grafted polyethylene copolymer, 9 parts of chlorinated palm oil methyl ester; maleic anhydride grafted polyethylene The copolymer is formed by mixing 90wt% maleic anhydride and 10wt% polyethylene. The preparation method of the titanium dioxide firepro...

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Abstract

The invention discloses an environment-friendly degradable composite film for packaging and a preparation method thereof. The degradable composite film is of a composite structure comprising a first modified polyvinyl alcohol layer, an insulating layer, a titanium dioxide fireproof layer, a polyvinyl alcohol composite layer, a second modified polyvinyl alcohol layer and a PET release film layer. The modified polyvinyl alcohol layer is prepared from the following raw materials in parts by weight: 45-76 parts of modified polyvinyl alcohol, 6-12 parts of bamboo carbon fibers, 3-8 parts of a medical stone powder, 2-5 parts of a nano calcium carbonate powder, 1-4 parts of lignocellulose, 3-6 parts of polyethylene glycol 400 and 2-5 parts of acetyl tributyl citrate. The composite film formed byhot-pressing stretching has excellent tensile strength, elongation at break, water resistance and high-temperature resistance. The used raw materials are non-toxic and environment-friendly and high indegradation rate, and can be substantially degraded if being photo-oxidized for 45 days. The environment-friendly degradable composite film is suitable for serving as a composite film for packaging food, chemical products and pesticides.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to an environment-friendly degradable composite film for packaging and a preparation method thereof. Background technique [0002] Composite film refers to a film compounded by a variety of different polymers by co-extrusion blow molding, co-extrusion casting or co-extrusion stretching. As a plastic packaging material, this film is widely used in the fields of food, processed meat products, daily necessities, cosmetics, chemical products, and pesticides, and can realize sealed flexible packaging of products and various packaging functions such as inflating, vacuuming, and thermoforming. Excellent properties such as high moisture resistance, oxygen resistance, oil resistance, and fragrance retention in complex environments. Conventional composite plastic film products, such as plastic films made of polypropylene, polyvinyl chloride, polyethylene, etc., cannot be degraded...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L97/02C08L97/00C08K7/06C08K3/34C08K3/26C08K5/098C08L23/06C08L3/08C08K5/07B32B27/30B32B27/18B32B27/08B32B27/28B32B9/00B32B9/04B32B27/32B32B27/36B32B7/08B32B33/00B32B37/10B32B37/06B65D65/40B65D65/46
CPCB32B7/08B32B9/00B32B9/045B32B27/08B32B27/18B32B27/281B32B27/306B32B27/32B32B27/36B32B37/06B32B37/10B32B2307/54B32B2307/5825B32B2307/7265B32B2307/752B65D65/40B65D65/466C08K2003/265C08K2201/011C08L23/06C08L29/04C08L2205/025C08L2207/062C08L2207/066C08L97/02C08L97/005C08K7/06C08K3/34C08K3/26C08K5/098C08L3/08C08K5/07Y02W90/10
Inventor 不公告发明人
Owner 江西中聚宏新材料科技有限公司
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