Laminated waterproof circuit board and manufacturing method thereof
A waterproof circuit board and waterproof circuit technology, which is applied in the directions of lamination, lamination device, lamination auxiliary operation, etc., can solve the problems of short product life, internal cracking and water entry, and high cost, and achieves low production cost and simple production. Convenience and small size
Active Publication Date: 2015-05-27
广东索伦光电股份有限公司
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- Description
- Claims
- Application Information
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Problems solved by technology
[0002] Existing waterproof circuit boards are usually filled with resin glue or other silica gel in the control box of the circuit board. This structure is bulky and expensive.
And long-term use of resin or other silica gel is easy to deteriorate and crack in the water, and the product life is not long
Method used
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Embodiment Construction
[0025] A further detailed description will be made below in conjunction with the accompanying drawings and embodiments of the present invention:
[0026] As shown in the figure, a laminated waterproof circuit board includes a SMD circuit board 1, an EVA film layer 2 is laid on the surface of the SMD circuit board 1, and PET is laid on both sides of the SMD circuit board 1. The film layer 3, the EVA film layer 2 and the PET film layer 3 are heated and melted to seal the SMD circuit board 1 inside and achieve a waterproof effect. The EVA film layer 2 is a thermoplastic sheet-shaped flexible material obtained by extrusion-casting with ethylene-vinyl acetate (English name: ethylene vinyl acetate, EVA for short) as the main raw material, after adding modification additives. It is a thermosetting adhesive film with good flexibility and elasticity. Long service life and good effect. PET film is also known as high temperature resistant polyester film. It has excellent physical prop...
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The invention relates to a laminated waterproof circuit board. The laminated waterproof circuit board comprises a paster circuit board, wherein an EVA film layer is paved on the surface of the paster circuit board; PET film layers are paved on front and back surfaces of the paster circuit board; the paster circuit board is sealed inside by the EVA film layer and the PET film layers. The invention further relates to a manufacturing method for the laminated waterproof circuit board, wherein the manufacturing method comprises the following steps: paving the EVA films and attaching the EVA films on one surface or front and back surfaces of the paster circuit board so as to cover the paster circuit board by the EVA films; paving the PET films on the front and the back surfaces of the paster circuit board respectively so as to cover the two surfaces of the paster circuit board by the PET films; fusing and sealing, putting the paster circuit board into a laminating machine, heating a chamber of the laminating machine to a constant temperature of 120-130 DEG C, melting the EVA films, tightly adhering the EVA films on the surfaces of the paster circuit board, and fusing and sealing the EVA films together with the PET films; curing and cooling for curing the EVA film and the PET films.
Description
[technical field] [0001] The invention relates to a laminated waterproof circuit board and a manufacturing method thereof. [Background technique] [0002] The existing waterproof circuit board is usually filled with resin glue or other silica gel in the control box of the circuit board. This structure has a large volume and high cost. Moreover, if resin or other silica gel is used for a long time, it is easy to deteriorate and crack and enter water, so the product life is not long. [0003] Therefore, it is necessary to solve the above problems. [Content of the invention] [0004] The invention overcomes the disadvantages of the above technologies, and provides a laminated waterproof circuit board with good waterproof effect, small volume, thin thickness and long service life. [0005] Another object of the present invention is to provide a method for manufacturing a laminated waterproof circuit board with good waterproof effect, small size, thin thickness and long life....
Claims
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IPC IPC(8): B32B27/06B32B27/08B32B27/30B32B27/36
CPCB32B27/06B32B27/08B32B27/306B32B27/36B32B37/06B32B37/10B32B38/164B32B2307/73B32B2457/08
Inventor 张磊
Owner 广东索伦光电股份有限公司