Method for bonding fluoroplastic layer and polyester layer

A technology of fluoroplastic and polyester layer, which is applied in the bonding field of fluoroplastic layer and polyester layer, can solve problems such as long production cycle, achieve the effects of reducing environmental impact, unique conception, and shortening production time

Active Publication Date: 2010-11-10
SHANGHAI HIUV NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this technology is that it has a wide range of applications and can be used to compound plastic film, aluminum foil, and paper. However, due to the use of solvents in the production process, it has a certain impact on the environment, and the production cycle is long due to the need for a curing process.

Method used

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  • Method for bonding fluoroplastic layer and polyester layer
  • Method for bonding fluoroplastic layer and polyester layer
  • Method for bonding fluoroplastic layer and polyester layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] See figure 1 As shown, the fluoroplastic layer 1 is a PVDF layer, the adhesive layer 2 is an adhesive resin layer, and the polyester layer 3 is a PET layer. The structure is made through the following process: an extruder extrudes a film of the bilayer structure through a die, and then casts it onto the surface of the PET layer. The double-layer structure is a PVDF layer and an adhesive resin layer, and the adhesive resin layer is in contact with the surface of the PET layer. Wherein the PVDF layer is white and has a thickness of 20 μm. The adhesive resin layer was an ethylene maleic anhydride graft layer, and the thickness was 60 μm. The PET layer is a biaxially stretched PET layer with a thickness of 100 μm. According to the pulling force test, the bond strength between the bonding resin layer and the PET layer was 22 N / cm.

Embodiment 2

[0030] See figure 2As shown, the fluoroplastic layer 1 is a PVDF layer, the transition layer 4 is a mixture layer of PVDF and PMMA, the adhesive layer 2 is an adhesive resin layer, and the polyester layer 3 is a PET layer. The structure is made through the following process: an extruder extrudes a film of the three-layer structure through a die, and then casts it onto the surface of the PET layer. The three-layer structure is a PVDF layer, a mixture layer of PVDF and PMMA, and an adhesive resin layer, and the adhesive resin layer is in contact with the PET layer. Wherein the PVDF layer is white with a thickness of 5 μm. The content of PVDF in the transition layer 4 is 20%, the content of PMMA is 80%, and the thickness is 10 μm. The bonding resin layer is EMA with a thickness of 10 μm. The PET layer is a biaxially stretched PET layer with a thickness of 250 μm. According to the pulling test, the bonding strength between the bonding resin layer and the PET layer is 25 N / cm....

Embodiment 3

[0032] The fluoroplastic layer 1 is a PVDF layer, the adhesive layer 2 is an adhesive resin layer, and the polyester layer 3 is a PET layer. The structure is made by the following process: an extruder extrudes a film with a double-layer structure through a die, and then casts it onto the surface of the PET layer, which is pre-corona-treated. The double-layer structure is a PVDF layer and an adhesive resin layer, and the adhesive resin layer is in contact with the surface of the PET layer. Wherein the PVDF layer is white and has a thickness of 20 μm. The adhesive layer 2 is a mixture of EMA and PVDF, wherein the content of EMA is 95%, the content of PVDF is 5%, and the thickness is 60 μm. The PET layer is a biaxially stretched PET layer with a thickness of 100 μm. According to the pulling force test, the bond strength between the bonding resin layer and the PET layer was 25 N / cm.

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Abstract

The invention relates to a method for bonding a fluoroplastic layer and a polyester layer. The fluoroplastic layer and a bonding layer or the fluoroplastic layer, a transition layer and the bonding layer are coextruded, cast and coated on the polyester layer so that the fluoroplastic layer and the polyester layer are bonded. The fluoroplastic layer can be any fluoroplastic layer with any thickness. Preferentially, the bonding layer is a thin film layer formed from the copolymers of ethylene and polar resins, and the transition layer is a polyacrylate layer or a mixture layer formed from vinyl fluoride-containing fluoroplastic and polyacrylate plastic. All layers can contain additives, pigments or fillers. The method for bonding fluoroplastic layer and polyester layer has the advantages of unique concept, delicate design, no solvent usage, good bonding effect and short production period, thereby reducing influences on environment and improving production efficiency, and has very important significance on the production of solar battery backboards on such a basis and is suitable for large-scale generalization and application.

Description

technical field [0001] The invention relates to the technical field of multilayer plastic production, in particular to the technical field of plastic layer bonding, in particular to a bonding method for a fluoroplastic layer and a polyester layer. Background technique [0002] Multi-layer co-extrusion is a commonly used plastic film production method. It has developed rapidly in recent years and has become one of the important production methods for food packaging and pharmaceutical packaging films. At present, the common food packaging bags are basically multi-layer extrusion, such as three-layer co-extruded CPP film. It becomes a film with a multi-layer structure by melting different plastics into the same mold and extruding them at the same time, and the layers are adhered to each other. Due to the fast production speed of the multi-layer extrusion technology and the high bonding strength between the layers of the film, the films produced by this technology are increasin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/15B32B27/04B32B27/08B29C48/07B29C48/08B29C48/154B29C48/21
CPCB32B37/153B29C47/0019H01L31/0481C08J2327/16B32B7/12C08J5/128C08J2367/02H01L31/0487B29C47/025B29K2067/00B32B27/36B32B2333/08C08J2423/08B32B2367/00B29C47/0021B32B27/304B32B2250/24B29K2027/16B29C47/065Y02E10/50B32B2327/12B29K2027/12B29K2033/04H01L31/049B29C48/07B29C48/08B29C48/154B29C48/21
Inventor 李民
Owner SHANGHAI HIUV NEW MATERIALS
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