Polyester film, method for production of the same, and area light source, solar battery back-sheet and solar battery each comprising the same

A technology for solar cells and manufacturing methods, applied in the field of polyester films, capable of solving problems such as gas barrier properties, easy formability, mold release properties, flame retardancy, UV resistance, hydrolysis resistance, and insufficient electrical insulation, etc., Achieve excellent productivity

Inactive Publication Date: 2010-11-03
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In this regard, although aromatic polyester resins are excellent in mechanical strength, transparency (transparency), and heat resistance, they are inferior in gas barrier prope

Method used

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  • Polyester film, method for production of the same, and area light source, solar battery back-sheet and solar battery each comprising the same
  • Polyester film, method for production of the same, and area light source, solar battery back-sheet and solar battery each comprising the same
  • Polyester film, method for production of the same, and area light source, solar battery back-sheet and solar battery each comprising the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～68

[0314] The mixture of raw materials shown in Table 1 was vacuum-dried at a temperature of 140° C. for 8 hours, then supplied to an extruder, melted and extruded at a temperature of 280° C., filtered through a 30 μm cut filter, and then Imported into the T-die.

[0315] Then, it is extruded into a sheet through a T-die to form a molten single-layer sheet, and the molten single-layer sheet is attached to a drum whose surface temperature is kept at 20° C. by electrostatic application, cooled and solidified, and an unoriented (unoriented) sheet is obtained. Stretch) monolayer film. Next, this unstretched single-layer film was preheated in a roll group heated to a temperature of 90°C, and then the rolls were heated between rolls at a ratio shown in Table 2 along the longitudinal direction (longitudinal direction) using a heating roll at a temperature of 95°C. Stretching, followed by cooling in a roll set at a temperature of 25° C., thereby obtaining a monoaxially oriented (monoaxi...

Embodiment 9-2、14-2、24-2、30-2、43-2

[0319] (Examples 9-2, 14-2, 24-2, 30-2, 43-2, 49-2, 55-2, 63-2, 66-2)

[0320] The mixtures of the same raw materials as in Examples 9, 14, 24, 30, 43, 49, 55, 63, and 66 were vacuum-dried at a temperature of 140° C. for 8 hours, and then supplied to the main extruder. In addition, a sub-extruder was used separately from the main extruder, and PET (melting point TA: 255° C.) pellets were supplied to the sub-extruder. Next, on both surface layers of the component layer supplied to the main extruder, the component layers supplied to the sub-extruder are merged so that the thickness ratio is the component layer of the sub-extruder: the component of the main extruder Layer: sub-extruder composition layer = 1:8:1, that is, the thickness of W layer / the sum of the thicknesses of other layers other than W layer = 4 / 1, let them pass through the T-shaped die, and melt 3 The laminated layers are co-extruded to make a laminated sheet, which is attached to a drum whose surface temperature...

Embodiment 9-3、14-3、24-3、30-3

[0323] (Example 9-3, 14-3, 24-3, 30-3, 43-3, 49-3, 55-3, 63-3, 66-3)

[0324] The component layer supplied to the sub-extruder is merged on one surface layer of the component layer supplied to the main extruder, and the thickness ratio is set to be sub-extruder component layer:main extruder component layer=1 : 9, that is to say, the thickness of W layer / thickness of other layers other than W layer=1 / 9, through the inside of the T-shaped die, carry out the co-extrusion of the molten 2-layer laminated layer, in addition, adopt and implement respectively Example 9-2, 14-2, 24-2, 30-2, 43-2, 49-2, 55-2, 63-2, 66-2 The same method, making two kinds of biaxially oriented polymers with different thicknesses Ester film. The first is a biaxially oriented (biaxially stretched) polyester film having a polyester layer (W layer) thickness of 30 μm and an overall film thickness of 33.3 μm. The second is a biaxially oriented (biaxially stretched) polyester film having a polyester layer (W ...

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Abstract

Disclosed is a polyester film having excellent mechanical strength, ray transmittance, gas barrier properties, molding easiness, mold releasability, UV resistance, insulation properties and productivity. Specifically disclosed is a film which comprises a polyester layer (layer W) comprising an aromatic polyester resin (A) and an incompatible component (B) that is incompatible with the polyester resin (A), wherein the incompatible component (B) comprises an acid-modified polyolefin resin (b2), wherein the incompatible component (B) is dispersed in the form of a dispersant having a flatness of 10 or more in the polyester layer (layer W), and wherein the dispersant makes up not less than 3% by volume and less than 50% by volume of the total volume of the polyester layer (layer W), and wherein air bubbles make up less than 3% by volume of the total volume of the polyester layer (layer W).

Description

technical field [0001] The present invention designs improved polyester film, and more specifically, relates to mechanical strength, light transmission, gas barrier properties, easy formability, mold release properties, UV resistance (ultraviolet resistance), electrical insulation, and productivity Excellent polyester film. Background technique [0002] Aromatic polyester resins represented by polyethylene terephthalate and polybutylene terephthalate are inexpensive resins that have both heat resistance and transparency. Films can exhibit high mechanical strength, so they are used in various applications such as various industrial materials, packaging materials, and optical materials. [0003] On the other hand, in recent years, polymer alloy technology in which different types of polymers are added and mixed with a main polymer has been widely used as a method for imparting higher functions and performances to polymers. [0004] This is because, on the one hand, the prope...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L23/02C08L23/26C08L67/02
CPCC08L23/20C08L51/06C08J2367/02C08L23/12C08L67/02Y02E10/50C08L2205/03C08J5/18H01L31/048C08L23/02B32B2367/00H01L31/049Y10T428/254
Inventor 青山滋菊池朗和高桥弘造
Owner TORAY IND INC
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