Hong Ye Jie Technology Co.Ltd was established in 1998, is a Science and technology corporation which is engaged in R & D ,production, and sales of silicon rubber. We also established the Hong Kong Hongye LTD, Shenzhen Hongye Jie rubber Factory and other affiliated enterprises in 2005.
Our products includes 36 series in hundreds kinds of silicon products like silicon rubber, RTV-2 molding silicon rubber, silicon rubber for manual mold, silicon rubber for mold making, silicon for pad printing mold, etc.
Mould making silicon rubber
Applications of mould making silicon rubber
Silicon rubber for mould making is mainly used for poly resin crafts, gypsum crafts, unsaturated resin crafts, lighting and candle crafts, plastic toys, stationary gifts crafts industry, a large statue Buddha, large-scale cement mold, aninamls and plants sculpture, relievo furniture, cultural relic product, etc.
Features of molding silicon rubber:
Silicon rubber for mold making with general hardness of 22-55 A0 after curing. Molding silicon rubber is a kind of flowing liquid which features with good resistance to deformation, good tensile and tear strength, acid-alkali as well as high reproduction times, good flowability and easy operation.
Product performance parameter of silicon rubber
Model:628
color:white
Viscosit y(cps):24000-29000
Hardness(A0):28?2
Tensil e-strength (Mpa):≥3.6
Tear-strength (KN/m):≥2.7
Elongation(%):≥420
Mixing Ratio (%):2～3
Pot life(H):0.5～1
Demould Time(H):2～5
Instruction for molding silicon rubber
If customer wants to make large products and large size molds, the mold should be made of silicon rubber with high hardness. On the contrary, if the mold with dedicate and precision patterns, it should make of silicon rubber with low hardness. The mixing ratio between the silicon rubber and the curing agent depents on the customers? requirement. If clients needs fast drying and demold, more curing agent will be added; contrarily, if molds requiring slower drying and demould, less curing agent is needed.
(Note: our company does not recommend you to add silicon oil, if a special soft silicon mold or fine or dedicate pattern products are required, 5%-10% silicon oil can be added to soften the mold for easy demould)
Frequently asked questions of mold making silicon rubber
1. Why should the silicone mold be reused only for a few times?
It can be due to the following reasons:
a. Adding too much silicone oil in to silicon rubber. Silicon oil is an additive which destroies the molecular weight of silicone rubber and reduce the tension and tear strength.
b. Using the silicon rubber with a high hardness to make molds for small sized products with delicate and intricate designs and the silicon rubber with a low hardness to makes molds for large sized products with simple designs.
(Notes: we should choose the silicon rubber specifically according to the requirements of our products to avoid this problem.)
2. Why is the appearance of the finished mold striate and unsmooth?
It is because the appearance of the product or the model itself is not perfect, and it has not been polished before the further operation. So when you make silicon molds, firstly you should polish the product, spray the mold spray evenly on the product. In this case, the problem can be avoided.
Payment Terms:L/C, T/T
Port: Shenzhen
Minimum order quantity:200kg
Supply ability:4 tons/day
Deliverly Time:within 3 days after getting bank receipt
Package:25kg/drum and 200kg/drum
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