Polyester film

A technology of polyester film and polyester thick sheet, which is applied in the field of polyester film, can solve the problems that the reel cannot be added automatically, the polyester film is uniformly rewound, and the efficiency is reduced, so as to achieve low shrinkage and uniform thickness , the effect of improving efficiency

Active Publication Date: 2022-05-27
QUANZHOU LICHANG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the process of preparing polyester film, it is not possible to conveniently and automatically wind the polyester film evenly on the winding drum, and then automatically complete the stripping and conveying according to the needs of winding, and in the process of winding The winding reel for winding cannot be added automatically, which makes the polyester film preparation and winding process time-consuming and labor-intensive and reduces efficiency, so a device is needed to solve the above-mentioned problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A polyester film such as figure 1 As shown, its preparation process includes the following:

[0051] S1. Pre-mixing and drying: The raw materials of the polyester film are placed in a vacuum drum, pre-mixed for 30 minutes at a rotational speed of 5r / min, and then dried for 3 hours, and the drying temperature is 110°C;

[0052] S2. Melt extrusion: send the dried raw material into the extruder to melt, extrude polyester thick sheet through the melt tube, coarse and fine filter and die, and control the temperature of the die when extruding the thick sheet At 275°C, the linear speed of polyester thick sheet extrusion is controlled at 0.3m / s;

[0053] S3, lower pressure stretching: the polyester thick sheet in step S2 is sequentially stretched longitudinally and transversely by stretching equipment until the thickness of the polyester film is stretched to 0.05mm;

[0054] S4, corona treatment: cut the excess parts on the front and rear sides of the polyester film conveyed ...

Embodiment 2

[0058] A polyester film such as figure 1 As shown, its preparation process includes the following:

[0059] S1. Pre-mixing and drying: The raw materials of the polyester film are placed in a vacuum drum, pre-mixed for 40 minutes at a rotational speed of 57 r / min, and then dried for 2 hours, and the drying temperature is 130 °C;

[0060] S2. Melt extrusion: send the dried raw material into the extruder to melt, extrude polyester thick sheet through the melt tube, coarse and fine filter and die, and control the temperature of the die when extruding the thick sheet At 280°C, the linear speed of the polyester thick sheet extrusion is controlled at 0.4m / s;

[0061] S3, lower pressure stretching: the polyester thick sheet in step S2 is longitudinally stretched and transversely stretched in turn by stretching equipment, until the thickness of the polyester film is stretched to 0.1mm;

[0062] S4, corona treatment: cut the excess parts on the front and rear sides of the polyester fi...

Embodiment 3

[0066] A polyester film such as figure 1 As shown, its preparation process includes the following:

[0067] S1. Pre-mixing and drying: The raw materials of the polyester film are placed in a vacuum drum, pre-mixed for 30 minutes at a rotational speed of 10 r / min, and then dried for 1 hour, and the drying temperature is 160 °C;

[0068] S2. Melt extrusion: send the dried raw material into the extruder to melt, extrude polyester thick sheet through the melt tube, coarse and fine filter and die, and control the temperature of the die when extruding the thick sheet At 290℃, the linear speed of polyester thick sheet extrusion is controlled at 0.5m / s;

[0069] S3, lower pressure stretching: the polyester thick sheet in step S2 is sequentially stretched longitudinally and transversely by stretching equipment until the thickness of the polyester film is stretched to 0.2 mm;

[0070] S4, corona treatment: cut the excess parts on the front and rear sides of the polyester film conveyed...

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Abstract

The invention relates to the technical field of polyester film preparation, and discloses a polyester film, a preparation process comprises the following steps: S1, premixing and drying; s2, melt extrusion; s3, pressing and stretching; s4, corona treatment; s5, rolling and slitting; the polyester film is prepared from the following raw materials in parts by weight: 110 to 130 parts of terephthalic acid, 145 to 185 parts of ethylene glycol, 2 to 5 parts of aluminum hydroxy distearate, 6 to 9 parts of decamethylene diamine, 1.3 to 1.8 parts of nano silicon dioxide and 0.1 to 0.2 part of triethyl phosphate.

Description

technical field [0001] The invention relates to the technical field of polyester film preparation, in particular to a polyester film. Background technique [0002] Polyester film is made of polyethylene terephthalate as raw material, made into thick sheet by extrusion method, and then stretched to make film material. Polyester film, environmental protection film, PET film, milky white film and other printing and packaging consumables are widely used in the glass fiber reinforced plastic industry, building materials industry, printing industry, medicine and health. [0003] According to a rewinding machine based on PET polyester film processing with the patent number of CN202110735066.5, the invention provides a rewinding machine based on PET polyester film processing, which belongs to the technical field of polyester film processing, and solves the problem of existing rewinding machines. When the rewinding roller on the reeling machine is disassembled, it is necessary to lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/01C08J5/18C08L67/02C08K5/17C08K7/26C08K5/521B65H18/02B65H18/10
CPCB29D7/01C08J5/18B65H18/02B65H18/10C08J2367/02C08K5/17C08K7/26C08K5/521C08K2201/011
Inventor 吕水抽
Owner QUANZHOU LICHANG PLASTIC
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