Manufacturing process of demolding diaphragm lining layer of mold for manufacturing glass fiber reinforced plastic

Abstract

The invention discloses a manufacturing process of a demolding diaphragm lining layer of a mold for manufacturing glass fiber reinforced plastic. The demolding diaphragm lining layer is a demolding diaphragm lining layer with solid and liquid phases. The manufacturing process comprises the following steps: flattening and repairing the inner wall of the mold, and cleaning dust on the inner wall; spraying or brushing a layer of adsorbent on the inner wall surface of the mold uniformly; laying a high polymer plastic film layer on the inner wall surface of the mold, and repeatedly rolling an elastic roller on the high polymer plastic film layer from inside to outside until no redundant adsorbent and bubbles exist, so that the high polymer plastic film layer is tightly attached to the inner wall surface of the mold; selecting a plurality of points around the high polymer plastic film layer, and bonding and fixing the high polymer plastic film layer on the inner wall surface of the mold withinstant glue to complete manufacturing of the demolding diaphragm lining layer of the mold, and then manufacturing the glass fiber reinforced plastic on the demolding diaphragm lining layer of the mold. The manufacturing process combines conventional solid or liquid single-phase surface demolding layers, so that the inner wall surface of the mold is provided with the demolding diaphragm lining layer with the solid and liquid phases. The glass fiber reinforced plastic is manufactured on the surface of the demolding diaphragm lining layer, and a finished product is demolded on the liquid phasesurface layer; and finally the diaphragm attached to the product surface torn off.

Description

[technical field] [0001] The invention relates to a process for making glass fiber reinforced plastic and its demoulding, and belongs to the technical field of mold making, in particular to a process for making a mold release diaphragm lining layer of glass steel. [Background technique] [0002] For molds for molding FRP products, in order to facilitate the demoulding of the finished products, the inner wall of the mold must be made into a low-energy surface layer. There are often two forms of solid or liquid, such as a solid form coated with solid wax, silicone rubber, etc., or a liquid form composed of various mineral oils, animal and vegetable oils (release agents), etc. combined with linoleum cloth. [0003] However, the production process of solid surface is complicated, long time and high cost; products made of liquid surface must be polished and cleaned before the surface can be modified with putty and coated due to the release agent adsorbed on the surface. This proc...

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