Forming method of colored silica gel

Abstract

The invention discloses a forming method of colored silica gel. The method comprises the following steps of: A, laying a polytetrafluoroethylene sheet into a first die, and performing hot-press molding, so as to produce a colored silica gel die enabling colored silica gel to be formed, B, laying colored silica gel pigment on the colored silica gel die, and performing hot-press molding, C, removing sides of the colored silica gel subjected to hot-press molding, and then laying the colored silica gel into a jig, D, laying another polytetrafluoroethylene sheet into a second die, and performing hot-press molding, so as to produce a forming die ensuring that bottom color silica gel and colored silica gel are formed together, E, laying the colored silica gel in the jig in a preset position of the forming die, laying bottom color silica gel material in the rest positions of the forming die, and performing hot-press molding, and F, taking out pressed silica gel pieces after pressing, so as to obtain finished colored silica gel products. The method ensures that colored silica gel which easily has the problem of flash is singly subjected to hot-press molding, solves the problem of flash, improves the capacity, reduces the reject ratio of products and production cost, and is high in profit ratio.

Description

technical field

[0001] The invention relates to a molding method of colored silica gel. Background technique

[0002] Colored silicone products are mainly suitable for remote controls of various household electrical appliances. For the sake of beauty and convenience, different function buttons are often distinguished by different colors when designing and producing remote controls or keyboards.

[0003] The Chinese patent whose patent publication number is CN1990210A discloses a kind of molding method of colored silica gel. In this patent, the polytetrafluoroethylene sheet is first put into the mold for hot-pressing and shaping; then the raw material is placed on the hot-pressing and shaped polytetrafluoroethylene sheet and put into the above-mentioned mold cavity; the mold is hot-pressed for the first time, opened Mold, take out the polytetrafluoroethylene sheet; hot press the mold for the second time and vulcanize and set it to get the finished color silicone product. Th...