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System and method for manufacturing heat shrinkable film

A manufacturing system and technology of heat shrinkable film, applied in the direction of flat products, household appliances, other household appliances, etc., can solve the problems of unavoidable agglomeration, unstable performance of film-forming products, large specific surface area, etc. Excellent transparency, light transmittance and high effect of unidirectional thermal shrinkage

Active Publication Date: 2022-01-11
JIANGSU SHUANGXING COLOR PLASTIC NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inorganic anti-blocking agent of the three-layer polyester film of the prior art is dispersed by ethylene glycol, the specific surface area of ​​the nano-sized inorganic anti-blocking agent is too large, it is difficult to avoid agglomeration in the common ethylene glycol dispersion process, and the film-forming product The performance is not very stable

Method used

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  • System and method for manufacturing heat shrinkable film
  • System and method for manufacturing heat shrinkable film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Add 5.0kg of terephthalic acid, 2.2kg of ethylene glycol, and 1.10g of germanium dioxide into a 20L general-purpose polymerization reactor, and carry out esterification reaction at 230-265°C and 0.2-0.3Mpa (gauge pressure). After reaching the theoretical value, the system pressure was released to normal pressure. To react under these conditions, add 1.025g of triethyl phosphate, stir at normal pressure for 10 minutes, raise the temperature and lower the pressure to 280°C and below 100Pa, carry out the reaction for 3 hours under these conditions, and finally extrude through polymerized melt, pelletize, After drying, PET polyester chips for films with an intrinsic viscosity of 0.75 dl / g were obtained.

[0046] Dry 60 parts by weight of airgel particles with a particle size of 0.5 μm at 120 ° C for 4 hours; dry 10 parts by weight of polylactic acid particles with a particle size of 0.5 mm or less at 110 ° C for 4 hours; Polystyrene particles below mm and 5 parts by weight...

Embodiment 2

[0050] Add 5.0kg of terephthalic acid, 2.2kg of ethylene glycol, and 1.10g of germanium dioxide into a 20L general-purpose polymerization reactor, and carry out esterification reaction at 230-265°C and 0.2-0.3Mpa (gauge pressure). After reaching the theoretical value, the system pressure was released to normal pressure. To react under these conditions, add 1.025g of triethyl phosphate, stir at normal pressure for 10 minutes, raise the temperature and lower the pressure to 280°C and below 100Pa, carry out the reaction for 3 hours under these conditions, and finally extrude through polymerized melt, pelletize, After drying, PET polyester chips for films with an intrinsic viscosity of 0.75 dl / g were obtained.

[0051] Dry 70 parts by weight of airgel particles with a particle diameter of 10 μm at 120 ° C for 4 hours; dry 15 parts by weight of polylactic acid particles with a particle size of 0.5 mm or less at 110 ° C for 4 hours; The following polystyrene pellets were dried at 1...

Embodiment 3

[0055] Add 5.0kg of purified terephthalic acid, 2.4kg of ethylene glycol, 1.6kg of 1,4-cyclohexanedimethanol (CHDM), 0.1g of tetrabutyl titanate catalyst, and 120g of calcium acetate anti-sticking agent into a 20L general-purpose reactor Binder, 20g nano-scale calcium acetate additive, carry out esterification reaction under the conditions of 230-250°C and 0.2-0.3Mpa, and release the system pressure to normal pressure after the water output reaches the theoretical value. React under these conditions, add 0.03g triethyl phosphate stabilizer, stir at normal pressure for 6min, after vacuuming, raise the temperature inside the reactor to 285°C, and drop the pressure below 100Pa, react under these conditions for 3h, and finally PETG polyester chips for films with an intrinsic viscosity of 0.80 dl / g were obtained through polymerization melt extrusion, pelletizing and drying.

[0056] Dry 65 parts by weight of airgel particles with a particle size of 5 μm at 120 ° C for 4 hours; dry ...

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Abstract

The present application discloses a manufacturing system for heat-shrinkable films, including a polyester film preparation mechanism, a functional material preparation mechanism and a film preparation mechanism. In addition, the application also discloses a method for manufacturing a heat shrinkable film with a three-layer structure by using the manufacturing system. Based on the existing polyester film preparation mechanism and film preparation mechanism, the heat shrinkable film manufacturing system of the present application integrates the functional material preparation mechanism and supporting equipment such as extrusion, slicing, drying and connecting pipelines, and can be used for Continuously and efficiently produce the heat shrinkable film of the present application. The heat shrinkable film obtained by the manufacturing system and method of the present application has excellent processability, good tensile strength, light transmittance and flame retardancy.

Description

technical field [0001] The present application relates to a manufacturing system and a manufacturing method of a heat-shrinkable film with a three-layer structure. The heat-shrinkable film can be used in the fields of food, medicine, catering, daily necessities, printing, labels, electronics, etc. Outer packing material. Background technique [0002] Heat shrinkable film is widely used in food, medicine, disinfection tableware, stationery, craft gifts, printed matter, metal and plastic products, telephones, electronic appliances and other products, especially in the combination of irregular shaped items or commodities In terms of packaging, it can not only meet the functions of moisture-proof and dust-proof, anti-touch and stealing, transparent display and other functions of the product, but also increase the attractiveness of the product appearance. [0003] Commonly used heat shrinkable films usually include polyvinyl chloride film, polyester film, polystyrene film, etc. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D7/01
CPCB29D7/01
Inventor 吴培服丁炎森吴迪池卫
Owner JIANGSU SHUANGXING COLOR PLASTIC NEW MATERIALS
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