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Preparation method and preparation device for PET multi-layer composite sheet

A technology of multi-layer composite and pulling device, applied in the field of preparation of PET multi-layer composite sheet, can solve the problems of incompatibility, non-discovery, great difference in melting point, etc., and achieve the effect of increasing the toughness of materials

Active Publication Date: 2015-06-03
上海堃元新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The PET multilayer composite material in the prior art is composed of a high-temperature material and a low-temperature material, but the melting point of the high-temperature material is 180 degrees, and the melting point of the low-temperature material is 65 degrees. Found a machine to produce this material

Method used

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  • Preparation method and preparation device for PET multi-layer composite sheet
  • Preparation method and preparation device for PET multi-layer composite sheet
  • Preparation method and preparation device for PET multi-layer composite sheet

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specific Embodiment approach

[0034] A preparation method of PET multilayer composite sheet, comprising the following steps:

[0035] (1), PET raw material and PETG raw material are processed respectively;

[0036] (2), the processed PET raw material and PETG raw material are mixed by a metering pump;

[0037] (3), two kinds of raw materials mixed by step (2) are carried out upper and lower layer distribution through a material distributor;

[0038] (4), the raw material processed by step (3) upper and lower layers is discharged through the molding die;

[0039] (5), the sheet after the step (4) is discharged is cooled by 30 degrees of water, and finalized;

[0040] (6), the sheet material after finalizing in step (5) is coated with lubricant and antistatic agent up and down through a push coating device;

[0041] (7), the sheet material that push-coats slipping agent and antistatic agent is dried in step (6);

[0042] (8), the sheet material that obtains in step (7) is cut off edge according to requir...

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Abstract

The invention discloses a preparation method of a PET multi-layer composite sheet. The preparation method comprises the following steps: (1) treating a PET raw material and a PETG raw material respectively; (2) mixing the treated PET raw material and PETG raw material by a metering pump; (3) carrying out upper-layer and lower-layer distribution for the two types of raw materials through a material distributor; (4) obtaining a sheet from the raw materials treated by upper and lower layering through a molding die head; (5) cooling and sizing the obtained sheet by water of 30 degrees; (6) coating the sheet with a lubricating agent and an antistatic agent after intermediate sizing by a push coating device; (7) drying the sheet after being coated with the lubricating agent and the antistatic agent; (8) cutting boundary materials of the obtained sheet according to required specifications; and (9) drawing out the sheet with the boundary materials being cut, and then rolling to obtain a finished product. According to the preparation method disclosed by the invention, the PET multi-layer composite sheet can be produced by the device, and the device can be used for changing physical properties of the PET multi-layer composite sheet.

Description

technical field [0001] The invention relates to a preparation method of a PET multilayer composite sheet. Background technique [0002] Thermoplastic environmental protection material, odorless and tasteless after burning, does not produce toxic gas. High transparency, no water ripples on the surface, no crystal point, no double-phase whitening: strong oil and chemical resistance: toughness and rigidity, good impact resistance (impact resistance at low temperature is also good, about 20% higher than PVC standard ). Used for blister, folding box, packaging, printing, card making, etc. Polyethylene terephthalate is the most important variety of thermoplastic polyester. The English name is Polythylene terephthalate, which is called PET or PEIT for short, commonly known as polyester resin. [0003] The PET multilayer composite material in the prior art is composed of a high-temperature material and a low-temperature material, but the melting point of the high-temperature mate...

Claims

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Application Information

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IPC IPC(8): B29C47/06B29C47/92B29C48/92
Inventor 李卫国瞿颖凡
Owner 上海堃元新材料股份有限公司