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Mold Making Silicone Rubber

Posted at: Offers to Sell and Export | Posted on: Thu 11 Mar, 2010 9:33 am |
mold silicone rubber
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mold making silicone rubber

Product Description

Mold making silicone rubber is white or red flowing

liquid with general hardness of 22-50A°after curing. Molding silicon rubber is a kind elastic silicon rubber mold which features with easy operation, non-deformation, high-temperature resistance, acid-alkali resistance and expansion as well as high reproduction times, good tensile strength, tear strength and elongation.

Product Feature

1. Good characteristics of easy-operation

2. Light viscosity and good fluidity

3. Low shrinkage

4. Favorable tension

5. No deformation

6. Favorable hardness7. High temperature resistance, acid and alkali-resistance and ageing resistanc

Product Specification/Models

According to the different materials, two series of mould making silicon rubber are divided, which are HY-6 and HY-7.

a. HY-6 Series includes model codes of HY-620, HY-640, HY-628, HY-638 with the hardness of 18-22 shore A, 38-42 shore A, 25-30 shore A and 35-40 shore A respectively.

HY-620 and HY-640 are particularly suitable for pouring mould.

HY-620 is for small crafts mould making, while HY-640 is for large crafts mould making. Common features of HY-620 and HY-640: light viscosity, pourable effort, good fluidity, easy-operation, good tension and high tear strength.

HY-628 and HY-638 are particularly suitable for brushing mould making.

Common features of HY-628 and HY-638: moderate viscosity, easy-operation. Agents are available if requested. It won’t affect the quality of silicon rubber but to make the operation much easier.

b. HY-7 Series includes model codes of HY-718, HY-728, HY-738 with the hardness of

15-20 shore A, 25-30 shore A and 35-38 shore A respectively.

HY-718 is a kind of soft silicon rubber and suitable for pouring mould making of small crafts.

HY7-28 with moderate viscosity is suitable for pouring mould and collapsible mould making of crafts in medium size.

HY-738 with high hardness is suitable for to collapsible mould making of crafts in large size.


mold making silicone rubber is primarily intended for poly resin crafts, PU crafts, PU resin crafts, gypsum crafts, unsaturated resin crafts, lighting and candles Buddha, furniture, furniture decorative materials, statues Buddha, artifacts copied, building decorationmold, artificial fossils Factory, Europe component factory, simulation landscapes, animals and plants sculpture, sandstone crafts and so on.。

Other Information

FAQ of moulding silicone rubber:

1. Why could 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.

2. Why does the silicone mold get burnt out?

This consequence happens only because you have left out the important notes when using unsaturated resin materials to produce your products. The unsaturated resin produces great heat when added the curing agent. So you must demould the product within 3 minutes to avoid this problem.

3. Why does the silicone mould appear to be dry outside but wet inside?

Because molding silicone rubber is a kind of condensation silicone rubber, which get solidified after absorbing moisture from the air. In order to provide a significant shelf-life for the silicon rubber, we will dry out the water in the silicon rubber.

Solution: Add 0.05% water into the silicon rubber and Stir over a low speed briefly when you use it.

4. Why is the tear strength of the silicone mold weak?

In order to reduce the viscosity of silicone rubber and pursue a good quality, you may add a lot of silicone oil into the silicon rubber when making molds. In fact, it might have just the opposite effect. The tension and the tear strength will be reduced badly with the addition of silicon oil. And the silicon molds will be in a weak and flimsy manner.

5. Why is the silicon mold oily?

The molding silicone rubber itself doesn’t contain any oil, so it won’t be oily. If the mold is oily, it may be because you add the compound silicone oil( the compound of silicon oil and white oil). The white oil is not silicon oil but a kind of pe6. Why isn’t the silicon mold acid - alkali and aging resistant?

It is due to the addition of the silicon oil. Normally we do not advise our customers to add any silicon oil into the silicon rubber. If it is necessary, the ratio must be 5%-10%.

7.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

Company Contact:

sellsilicone photo
Contact Name: Zhengxiaoqing
Company Name: Shenzhen Hongye Jie Technology Co., Ltd.
Email: Email
Tel: 0755-89948019
Fax: 0755-89948030
Street Address: Liulian Shibi
Industrial Zone, Pingdi Town,
Long Gang District, Shenzhen,
China 518117
Website: http://www.szrl.net
Member name: sellsilicone
Country: China-CN China
Member Since: 11 March 2010
Total Leads: 8 sellsilicone Import Export Business Leads
Business focus: Silicone Rubber, Silicone, Moulding Silicone Rubber, Pad Print Silicone Rubber
Verify: Safe Import Export Tips

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