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Protective film used for producing non-adhesive double-sided flexible copper clad laminate and manufacturing method thereof

A technology of flexible copper clad laminates and manufacturing methods, applied in chemical instruments and methods, layered products, metal layered products, etc., can solve the problems of low production speed, prone to wrinkles, slow cooling speed, etc., and achieve improved production efficiency , low temperature and increased cooling speed

Inactive Publication Date: 2014-08-13
GUANGDONG SHENGYI SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production process, the protective film is a thermosetting organic polymer material. Due to its poor thermal conductivity, the heat of the high-temperature pressing roller is transferred to the polyimide film with adhesive function through the protective film to cause melting. It takes a long time, so the production speed is low, and after the five-layer composite material passes through the high-temperature pressing roller, the composite material is protected by the protective film, due to slow heat dissipation and slow cooling speed, the composite material will be separated from the protective film and copper at high temperature. Wrinkles easily when foil separates

Method used

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  • Protective film used for producing non-adhesive double-sided flexible copper clad laminate and manufacturing method thereof
  • Protective film used for producing non-adhesive double-sided flexible copper clad laminate and manufacturing method thereof
  • Protective film used for producing non-adhesive double-sided flexible copper clad laminate and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example

[0040] First add 147 parts of p-PDA to 3400 parts of DMAC while stirring, then add 68 parts of ODA, under the constant temperature control of 25°C, under the condition of nitrogen gas, gradually add 400 parts of BPDA and 73 parts of PMDA, under constant temperature control Stirring was continued for 4 hours to obtain a PAA solution, and the PAA solution was left to defoam for later use.

Embodiment

[0042] After the PAA solution prepared in the synthesis example was left to defoam, a certain thickness of coating was coated on the electrolytic copper foil with a predetermined thickness, and the DMAC was dried in a continuous oven with a temperature gradient of 120°C-150°C-160°C to obtain a single Copper foil with PAA coating on the surface, and then control the thickness on the other side of the copper foil and then apply PAA solution, and dry under the same temperature conditions to obtain a composite structure with PAA coating on both sides of the copper foil, and then pass through a continuous high-temperature oven for 180 ℃-360℃ imidization to obtain a protective film with a composite structure.

[0043] According to the production method of the adhesive-free double-sided flexible copper-clad laminate disclosed in Chinese Patent No. ZL800480039157.X, the protective film of the composite structure of the present invention is used instead of the thermosetting pure polyimi...

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Abstract

The invention relates t protective film used for producing a non-adhesive double-sided flexible copper clad laminate, which comprises a copper foil layer and two thermoset polyimide film layers coated on two faces of the copper foil layer. The protective film used for producing the non-adhesive double-sided flexible copper clad laminate has good thermal conductivity and heat dissipation. When the protective film is applied to producing the non-adhesive double-sided flexible copper clad laminate, the productive efficiency can be improved greatly. The invention also relates to a manufacturing method of the protective film used for producing the non-adhesive double-sided flexible copper clad laminate.

Description

technical field [0001] The invention relates to a protective film for the production of flexible copper-clad laminates, in particular to a protective film for the production of non-adhesive double-sided flexible copper-clad laminates and a manufacturing method thereof. Background technique [0002] In recent years, with the rapid development of smart phones, the market demand for adhesive-free double-sided flexible copper clad laminates has become stronger and stronger, and there is a great demand for cost pressure, so it is necessary to try various methods to reduce costs. Chinese patent No. ZL200480039157.X discloses a production method of a non-adhesive double-sided flexible copper clad laminate. It is made of a thermosetting protective film, copper foil, adhesive composite polyimide film, copper foil and protective film, which are continuously pressed at high temperature by double rollers. Only when the compounding speed is low can a double-sided flexible copper clad la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/08B32B15/20B32B27/28B32B37/02C08L79/08C08G73/10
Inventor 伍宏奎
Owner GUANGDONG SHENGYI SCI TECH