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Laminate containing coated polyester film

A laminated material, polyester film technology, applied in the field of laminated material, polyester film, coated polyester film

Inactive Publication Date: 2014-11-19
MITSUBISHI POLYESTER FILM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, problems were encountered in achieving a strong and hydrolytically stable adhesive bond between the polyester film and the ethylene-vinyl acetate copolymer layer

Method used

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  • Laminate containing coated polyester film
  • Laminate containing coated polyester film
  • Laminate containing coated polyester film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] PET pellets filled with 18% barium sulfate were introduced into a single screw extruder where they were heated and compressed into a molten state. The melt was extruded through a slot die and cast on casting rolls maintained at about 20°C where it solidified into an amorphous preparation film. The preliminary film was stretched longitudinally at 95° C. at a stretch ratio of 3.6:1. The stretched film was passed under a corona treater (Enercon Industries) at 1.5 W / ft 2 .min for corona treatment. Subsequently, an aqueous dispersion containing 20% ​​by weight solids (based on dry coating, which contained 50% by weight of Michem Prime 4983R (Michelman) ethylene-acrylic acid copolymer dispersion and 50% by weight of EPOCROS WS700 (Nippon Shokubai, Japan) oxazoline crosslinker) to coat the longitudinally stretched film over a reverse gravure roll. The longitudinally dried film was then dried at about 100° C. and then stretched transversely at a stretch ratio of 4.3:1 to obt...

Embodiment 2

[0086] PET pellets filled with 18% barium sulfate were introduced into a single screw extruder where they were heated and compressed into a molten state. The melt was extruded through a slot die and cast on casting rolls maintained at about 20°C where it solidified into an amorphous preparation film. The preliminary film was stretched longitudinally at 95° C. at a stretch ratio of 3.6:1. The stretched film was passed under a corona treater (Enercon Industries) at 1.5 W / ft 2 .min for corona treatment. Subsequently, an aqueous dispersion containing 20% ​​by weight solids (based on dry coating, which contained 50% by weight of Michem Prime 4983R (Michelman) ethylene-acrylic acid copolymer dispersion and 50% by weight of EPOCROS WS700 (Nippon Shokubai, Japan) oxazoline crosslinker) to coat the longitudinally stretched film over a reverse gravure roll. The longitudinally dried film was then dried at about 100° C. and then stretched transversely at a stretch ratio of 4.3:1 to obt...

Embodiment 3

[0089] PET pellets filled with 18% barium sulfate were introduced into a single screw extruder where they were heated and compressed into a molten state. The melt was extruded through a slot die and cast on casting rolls maintained at about 20°C where it solidified into an amorphous preparation film. The preliminary film was stretched longitudinally at 95° C. at a stretch ratio of 3.6:1. The stretched film was passed under a corona treater (Enercon Industries) at 1.5 W / ft 2 .min for corona treatment. Subsequently, an aqueous dispersion containing 22% by weight solids (based on the dry coating containing 15% by weight of PKHW-38 phenoxy resin (InChem Corp.) copolymer dispersion and 85% by weight of EPOCROS WS700 (Nippon Shokubai, Japan) oxazoline crosslinker) to coat the longitudinally stretched film via reverse gravure rolls. The longitudinally dried film was then dried at about 100° C. and then stretched transversely at a stretch ratio of 4.3:1 to obtain a bidirectionally ...

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Abstract

A bonding material is described that is well suited to bonding polymer films, such as polyester films, to other substrates. In one embodiment, for instance, the bonding material can be used to bond a polyester film to a layer containing an ethylene-vinyl acetate copolymer to form a backing material for a photovoltaic device. The bonding material generally comprises a polymer component combined with a cross-linking agent. The polymer component may comprise an alkylene carboxylic acid copolymer, such as an ethylene acrylic acid copolymer or an ethylene methacrylic acid copolymer. In an alternative embodiment, the polymer component may comprise a phenoxy resin. The cross-linking agent, on the other hand may comprise an oxazoline polymer.

Description

[0001] related application [0002] This application is based on and claims priority from US Patent Application Serial No. 61 / 547,286, filed October 14, 2011, which is incorporated herein by reference. Background technique [0003] Photovoltaic devices convert light energy, such as sunlight, into electricity. Photovoltaic devices typically include one or more solar cells comprising semiconductor materials. The semiconductor material may include, for example, silicon or any other suitable material. When light energy shines on a solar cell, the semiconductor material can generate an electric current if it is connected to a circuit. A plurality of solar cells electrically connected to each other and mounted in a support structure is often referred to as a photovoltaic module. On the other hand, a photovoltaic array can include multiple modules. [0004] Solar cells are usually placed behind a transparent material such as a sheet of glass. These electronic components are typ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/00B32B27/08B32B27/16B32B27/26B32B27/28B32B27/30B32B27/32B32B27/36C08J7/04C09D4/00C08J7/043
CPCB32B27/16C09D4/00B32B27/30B32B27/32C08J2433/00B32B27/36B32B27/08B32B27/00C08J2367/02C08J7/047H01L31/0487B32B27/26C09D5/00B32B27/28B32B7/12B32B27/20B32B2255/10B32B2255/26B32B2307/518Y10T428/24967Y10T428/265Y10T428/31797Y10T428/31786C08J7/0427C08J7/043Y02E10/50
Inventor M·D·格拉
Owner MITSUBISHI POLYESTER FILM
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