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Production line of polaroid release film base film and preparation method of production line

A release film and production line technology, applied in optics, flat products, optical components, etc., can solve the problems of unfavorable large-scale promotion, large investment in production equipment, and difficult control of alignment angle, etc., to achieve large-scale promotion and small production investment , good control effect

Pending Publication Date: 2021-12-07
四川东方绝缘材料股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a production line of polarizer release film base film and its preparation method, which solves the problems of large investment in production equipment, difficult control of alignment angle, unfavorable large-scale promotion and failure to meet the requirements of low alignment angle

Method used

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  • Production line of polaroid release film base film and preparation method of production line
  • Production line of polaroid release film base film and preparation method of production line
  • Production line of polaroid release film base film and preparation method of production line

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Such as Figure 1-5 The production line of a polarizer release film base film shown, the production line includes a main extruder and an auxiliary extruder arranged side by side, and filters arranged in sequence after the main extruder and the auxiliary extruder , melt pipeline, die distributor, cold drum, preheating roller, infrared heating lamp, cooling roller, horizontal stretching machine and traction winding system, horizontal stretching machine includes preheating section, transverse stretching section, high temperature setting section and The heat setting cooling section, the production line also includes a transverse stretching cooling box and an S-type pressure roller, the transverse stretching cooling box is arranged between the transverse stretching section and the high-temperature setting section, and the S-type pressing roller is arranged at the exit of the horizontal stretching machine.

[0047] The transverse stretching cooling box includes a box body, a ...

Embodiment 2

[0065] The production line of the polarizer release film base film in this embodiment is the same as that in Embodiment 1, and will not be repeated here.

[0066] The preparation method of polarizer release film base film comprises the steps:

[0067] S1. Extrusion: The raw polyester chips are respectively melted and extruded by the main extruder and the auxiliary extruder at a temperature of 275°C to obtain a melt. The melt passes through a filter at a temperature of 275°C and a melt at a temperature of 270°C. Pipeline, precisely compounded and flowed out under the die distributor at a temperature of 270°C;

[0068] S2. Cast sheet: The melt flows out through the lip of the die distributor. The temperature of the die lip is 275°C. After the melt flows down 2mm at the die lip, it is attached to the cold drum at a temperature of 25°C to form a cast sheet. The width of the cast sheet A crunch of 3%;

[0069] S3. Longitudinal stretching: the cast sheet is gradually heated by the...

Embodiment 3

[0077] The production line of the polarizer release film base film in this embodiment is the same as that in Embodiment 1, and will not be repeated here.

[0078] The preparation method of polarizer release film base film comprises the steps:

[0079] S1. Extrusion: The raw polyester chips are respectively melted and extruded by the main extruder and the auxiliary extruder at a temperature of 255°C to obtain a melt. The melt passes through a filter at a temperature of 260°C and a melt at a temperature of 260°C. The pipes are precisely compounded and flowed out under the die distributor at a temperature of 260°C;

[0080] S2. Cast sheet: The melt flows out through the lip of the die distributor. The temperature of the die lip is 255°C. After the melt flows down 1mm at the die lip, it is attached to the cold drum at a temperature of 18°C ​​to form a cast sheet. The width of the cast sheet The amount of crunch is 1%;

[0081] S3. Longitudinal stretching: the casting sheet is gr...

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Abstract

The invention relates to a production line of a polaroid release film base film and a preparation method of the production line. The production line comprises a main extruder and an auxiliary extruder which are arranged in parallel as well as a filter, a melt pipeline, a die head distributor, a cold drum, a preheating roller, an infrared heating lamp, a cooling roller, a transverse stretching machine and a traction winding system which are arranged behind the main extruder and the auxiliary extruder and are sequentially arranged; the transverse stretching machine comprises a preheating section, a transverse stretching section, a high-temperature shaping section and a heat shaping cooling section; the production line further comprises a transverse stretching cooling box and an S-shaped pressing roller, the transverse stretching cooling box is arranged between the transverse stretching section and the high-temperature shaping section, and the S-shaped pressing roller is arranged at an outlet of the transverse stretching machine. Arching of the base film can be effectively inhibited, the requirement of low alignment angle is met, and the production line is small in production investment, convenient to operate, high in practicability and beneficial to large-scale popularization.

Description

technical field [0001] The invention relates to the field of preparation of a polarizer release film base film, in particular to a production line of a polarizer release film base film and a preparation method thereof. Background technique [0002] In recent years, mobile phones, tablet computers, computers, and TVs have become indispensable tools in people's lives, and the demand for liquid crystal displays has increased day by day. Polarizers, an important component supporting them, have ushered in opportunities for development. As basic materials in the production process of polarizers The release film base film has become a hot product in the industry. Many researchers in this field use different methods to solve the problem of low alignment angle of the polarizer release film base film. [0003] The polarizer release film base film is usually made of polyester as the main raw material, which is made into a thick sheet by extrusion and then stretched vertically and hori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/01B29D11/00G02B5/30
CPCB29D7/01B29D11/00788G02B5/3033
Inventor 李明勇张朔徐正杨王鑫桂
Owner 四川东方绝缘材料股份有限公司
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