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Biodegradable thermal shrinkage film and preparation method thereof

A heat-shrinkable film, biological technology, used in flat products, other household appliances, applications, etc., can solve the problems of polluted environment, non-degradable materials, etc., and achieve the effect of high mechanical strength and high tensile strength

Inactive Publication Date: 2014-01-01
太仓市鸿运包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, heat shrinkable films are mainly used for outer packaging in the fields of food, electronics, machinery, etc., and in order to achieve good transparency, beautiful appearance, and high strength, non-degradable PVC, PET, PS and other materials are used, and these materials are all It cannot be degraded, which will eventually cause the adverse effects of polluting the environment

Method used

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  • Biodegradable thermal shrinkage film and preparation method thereof

Examples

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Effect test

Embodiment 1

[0019] A biodegradable heat-shrinkable film, which is mainly made of the following raw materials in parts by weight: 90 parts of poly-3-hydroxybutyrate-4-hydroxybutyrate, 1 part of HANKINS NCP-2, and 2 parts of zinc stearate , 1 part of dibutyl phthalate, 2 parts of PS-802.

[0020] The preparation method of the biodegradable heat-shrinkable film comprises the following steps: weighing the above raw materials in parts by weight; adding poly-3-hydroxybutyrate-4-hydroxybutyrate and HANKINS NCP-2 to the reaction kettle at 75°C , zinc stearate, dibutyl phthalate, PS-802 and stirred at 150rpm for 10min; the temperature in the reactor was raised to 290°C, and the pressure was lowered to below 90pa. body, and then extrude the prepared polymer melt, pelletize, and dry to obtain polyester chips; melt and extrude the above polyester chips, die casting, casting sheet winding, biaxial stretching, cooling and setting, and thickness measurement , Rewinding, slitting and rewinding, packagin...

Embodiment 2

[0023] A biodegradable heat-shrinkable film, mainly made of the following raw materials in parts by weight: 100 parts of poly-3 hydroxybutyrate, 5 parts of HANKINS NCP-2, 5 parts of ethylene bis stearamide, phthalate 3 parts of dibutyl formate, 5 parts of PS-802.

[0024] The preparation method of the biodegradable heat-shrinkable film includes the following steps: weighing the above-mentioned raw materials in parts by weight; adding poly-3 hydroxybutyrate, HANKINS NCP-2, ethylene bishard Fatty amide, dibutyl phthalate, PS-802 and stirred at 200rpm for 20min; the temperature in the reactor was raised to 300°C, and the pressure was lowered to below 90pa, and reacted under this condition for 3h to obtain a polymerized melt, and then The prepared polymer melt is extruded, pelletized, and dried to obtain polyester chips; the above-mentioned polyester chips are melt-extruded, die-cast, cast sheets wound, biaxially stretched, cooled and shaped, thickness measured, and rolled , Slit...

Embodiment 3

[0027] A biodegradable heat-shrinkable film is mainly made of the following raw materials in parts by weight: 95 parts of poly-3-hydroxybutyrate-4-hydroxybutyrate, 3 parts of HANKINS NCP-2, 3 parts of high melting point paraffin, 2 parts of dibutyl phthalate, 3 parts of PS-802.

[0028] The preparation method of the above-mentioned biodegradable heat-shrinkable film comprises the following steps: weighing the above-mentioned raw materials in parts by weight; adding poly-3-hydroxybutyrate-4-hydroxybutyrate, HANKINS NCP- 2. High melting point paraffin, dibutyl phthalate, PS-802 and stir at 180rpm for 17min; raise the temperature in the reactor to 295°C, lower the pressure to below 90pa, and react under this condition for 2h to obtain a polymer melt body, and then extrude the prepared polymer melt, pelletize, and dry to obtain polyester chips; melt and extrude the above polyester chips, die casting, casting sheet winding, biaxial stretching, cooling and setting, and thickness mea...

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Abstract

The invention discloses a biodegradable thermal shrinkage film. The biodegradable thermal shrinkage film is mainly prepared from the following raw materials in parts by weight: 90 to 100 parts of poly-3-hydroxybutyric acid-4 polyhydroxybutyrate or poly-3 polyhydroxybutyrate, 1 to 5 parts of aid, 2 to 5 parts of lubricating agent, 1 to 3 parts of plasticizer and 2 to 5 parts of antioxidant. The poly-3-hydroxybutyric acid-4 polyhydroxybutyrate or poly-3 polyhydroxybutyrate is a biodegradable macromolecular material and has the advantages of high mechanical strength, thermal formability, biocompatibility and the like, so that the thermal shrinkage film prepared by combining the poly-3-hydroxybutyric acid-4 polyhydroxybutyrate or poly-3 polyhydroxybutyrate with the acid, a toughening agent and thr like has high tensile strength, accords with the basic characteristics of the heat shrinkage film, can be biodegraded completely, and is an environment-friendly biological film.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a biodegradable heat-shrinkable film and a preparation method thereof. Background technique [0002] At present, heat shrinkable films are mainly used for outer packaging in the fields of food, electronics, machinery, etc., and in order to achieve good transparency, beautiful appearance, and high strength, non-degradable PVC, PET, PS and other materials are used, and these materials are all It cannot be degraded, which will eventually cause the adverse effects of polluting the environment. Therefore, there is an urgent need for a degradable shrink film that can meet the basic requirements of heat shrinkable films. Contents of the invention [0003] Purpose of the invention: In view of the above problems, the first purpose of the present invention is to provide a biodegradable and environmentally friendly heat shrinkable film. The second object of the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K5/098C08K5/20C08K5/01C08K5/101C08K5/12B29C47/92B29C55/12B29D7/01B29C48/92
CPCB29C48/92
Inventor 王向东
Owner 太仓市鸿运包装材料有限公司
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