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Rtv 2 Mold Making Silicone Rubber - China

price: contact company for price

RTV-2 mold making silicone rubber

Brief description of mold making silicone rubber:

Silicone rubber for mold making 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 resistance to deformation, high-temperature, acid-alkali and expansion as well as high reproduction times, good tensile strength, tear strength and elongation.

Applications of mold making silicone rubber:

Silicone rubber for mold making is primarily intended for poly resin crafts, PU crafts, PU resin crafts , gypsum crafts , unsaturated resin crafts, lighting and candles crafts , plastic toy , stationery gifts crafts industry, a large statue Buddha, furniture, furniture decorative materials, statues Buddha, artifacts copied, building decoration materials, large-scale cement mold, artificial fossils Factory, Europe component factory, simulation landscapes, animals and plants sculpture, sandstone crafts and so on.

Brief features:

1. resistance to deformation, high-temperature

2. high reproduction times

3. good tensile strength

4. exceptional fluidity and good operability.

Model code:

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

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.

HY-7 Series includes model codes of HY-718, HY-728, HY-738 with the hardness of15-20 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.

Note: Different colors are available if requested.

Operation Instruction for mold making silicone rubber:

Step One: Take 100g of part A and add 2g of part B and mix the silicone rubber and curing agent evenly.

Notes: Moulding silicon rubber is a kind of flowing liquid and it contains two parts. Part A is a kind of white flowing liquid and part B is the curing agent. Remember to mix part A and part B evenly, otherwise the silicon rubber will be partly solidified and this will give birth to difficulties in your final operation. What’s more, the finished moulds will meet a short life. All of these will cause a waste of silicon rubber.

Step Two: vacuum pumping

Without exception, this step takes less than 10 minutes. Otherwise, it will cause cross linking reaction, and no more further steps will be available.

Step Three: Brushing cast & Perfusion Molding operation

Brushing cast:

a. Evenly brush the mixed silicon rubber on the product which is covered with mold spray with a brush or a brush pen.

b. After the cross linking reaction (about 30 minutes), brush a second coat which can increase the tension and tear strength of the mold.

c. Cover a glass cloth on it after another 30 minutes of a second cross linking reaction, and use a brush pen or a brush to avoid any interstices.

d. Cover a third coat.

(Note: if you have high requirements for the tension and the tear strength for the mold, please repeat step c and step d. Hence, the finished silicone moulds will have a good quality and a longer life, which can help you save cost and increase production efficiency.)

Perfusion moulding:

It is suitable for simple products with the smooth surface.Without any mold lines, which helps you save time and is easy for operation.Evenly and slowly perfuse the mixed silicone rubber into the square fram.After the cross linking reaction and the silicone rubber turns dry, you can take the products out.Thus, the mold has been done.

(Note:we usaully use soft silicone rubber to make molds by perfusing, which is easy for demoulding and will not damage the product in the silicone molds.)

Operations of external mold:

a. Make a square frame with four pieces of wooden boards or rubber plates, then place the product which is covered with the finished silicon rubber mould in the middle.

b. Slowly and evenly perfuse the gypsum into the square frame. Also you can brush the resin on the product which is covered with the finished silicon rubber mould with a brush or a brush pen. Repeat this process two or three time after the cross link reaction.

Frequently asked questions of mold making silicone rubber

1.Why does the silicone rubber mold have few molding times?

The silicone rubber mold has few molding times is due to follwoing reasons: adding too much silicone oil which will destroy the molecular of silicone rubber; making the mold for small and fine detailed products with higher hardness silicone rubber which is easy to break; making the mold for large products with soft silicone rubber which will reduce the tensile and tear strength of the mold, and the mold will have deformation. Thus, we should take the proper silicone rubber to make the mold for suitable products.

Further information, please feel free to contact Firleanna:

MSN: HY-Firleanna(at)hotmail(dot)com

SKYPE:HY-Firleanna

T: 86-755-85224692

M:86-13480836856

F: 86-755-89948030

Email: HY-Firleanna(at)hotmail(dot)com

Website: www(dot)szrl(dot)net

Rtv 2 Mold Making Silicone Rubber

Please see our contact information below


Company Contact:


  • Phone: 8618938867520

  • Address: Shenzhen Hong Ye Jie Technology Co., Ltd., shenzhen, China

  • Email: Email


Published date: September 7, 2012 -

  • Business Description: Shenzhen Hong Ye Jie Technology Co., Ltd. was established in 1998, is a Science and technology corporation which is engaged in production, R & D, and sales of silicone rubber. It sets up Hong Kong Hongye Ltd., Shenzhen Hongye silicone rubber Factory and other affiliated enterprises in 2005.

    Our products including 36 series in hundreds of kinds of silicone products like silicone rubber, RTV 2 molding silicone rubber, silicone rubber for manual model design,shoe sole mold silicone rubber,silicon oil, pad printing silicone rubber, encapsulant and potting compound, silicone rubber for LED display, electronic thermolysis ointment, thermal conductivity silicone, special silicone rubber for CPU, silicone tube, silicone membrane, silicone sealant , liquid silicone rubber, addition cure RTV silicone rubber, HTV silicone rubber, solid silicone rubber, gross rubber, silicone rubber sheet, hot stamping silicone plates, hot stamping silicone roller,etc. These are currently been exported to Southeast Asia, Europe, the America and other 50 countries and regions.

    To reach the internationally leading quality standard with competitive price is our permanent pursuit. We aim at supply high quality products to meet customers' satisfaction. It is our solemn commitment that any of our products with quality problems will be replaced within 3 months after purchase. We offer on site follow up service for product demonstration, free customer service to solve technical issues, free mold opening technologies, free technical training on pad printing silicon usage and rubber head making. What you need is what we pursue. We are committed to back you up in producing first class products.

    Customers and distributors from around the world are welcomed to negotiate with us for business cooperation. Let's join hands and strive for mutu al prosperity.

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