RTV 2 addition cure silicone rubber for food grade molds making
RTV 2 addition cure silicone rubber for food grade molds making
1. Description of RTV 2 addition cure silicone rubber for food grade molds making
Addition-curing, Food grade, Translucent, Two-component mold making silicone.
2. Characteristics of RTV 2 addition cure silicone rubber for food grade molds making
Acceptable for food contact
Outstanding release properties
Low viscosity
Easy mixing and degassing
High flowability
Odorless and Nontoxic
Enhanced durability
3. Application of Casting Resin Mold Making Liquid Silicone Raw Material
resin/PU/bronze mold making
Artificial rock molds making
Gypsum moulds making
Cake mold
Chocolate moldmaking
Candy moldmaking
Baking moldmaking
Ice trays molding
Casting butters
Casting for Kitchen products
4. Datesheet of Casting Resin Mold Making Liquid Silicone Raw Material
| Model NO· | XB-730 | XB-640 | XB-650 | XB-660 |
| Mixing Ratio (by weight) | 1:1 | 1:1 | 1:1 | 1:1 |
| Appearance/Color | Translucent | Translucent | Translucent | Translucent |
| Hardness (Shore A) | 20±2 | 40±2 | 50±2 | 60±2 |
| Mixed viscosity(mPa·s) | 2000±500 | 6000±500 | 800±5000 | 10000±500 |
| Working Time(at 23℃/75℉, MINS) | 30~40 | 30~40 | 30~40 | 30~40 |
| Curing Time(at 23℃/75℉, HRS) | 3~5 | 3~5 | 3~5 | 3~5 |
| Tensile strength, Mpa | ≥5.1 | ≥5.8 | ≥6.0 | ≥4.8 |
| Tear strength, KN/m | ≥21.5 | ≥19.8 | ≥13.6 | ≥12.8 |
| Shrinkage, % | <0.1 | <0.1 | <0.1 | <0.1 |
| Elongation at break,% | ≥700 | ≥300 | ≥250 | ≥100 |
5. Using instructions of RTV 2 addition cure silicone rubber for food grade molds making
Step 1: Prepare and clean the prototype.
You must make sure your original molds perfect, fix the original mold on a board, then using some assistant material (like cardboard) to make a frame for to surround the prototype. The frame is no need, if we make the mold by brushing way.
Step 2: Take the silicone and catalyst as the ratio 1:1 by weight, mix the silicone rubber and catalyst evenly.
Notes: rtv silicone rubber is a kind of flowing liquid and it contains two parts. Part A is a kind of flowing liquid and part B is the curing agent. Remember to mix part A and part B evenly, otherwise the silicone rubber will be partly solidified and this will bring troubles for your final operation. What's more, the finishes molds will have a short life. All of these will cause a waste of silicone rubber.
Step 3: Vacuum pumping.
After mixed the silicone evenly, it is better to release the bubble by vacuum pumping.
Step 4: Pouring cast or brushing cast.
After released the bubble, we can pour/brush the silicone rubber on the prototype.
Notes: Please finishes all the steps within the operation time. If not, it will cause cross linking reaction, and no more further steps will be available. So, we have to pay attention to the pot life and curing time.
https://www.alibaba.com/product-detail/Free-Sample-RTV2-Silicone-Rubber-Good_60711301846.html?spm=a271v.8028082.0.0.6e28d73bnOHG5o
We have own lab with the experienced&professional R&D and production team as well as advanced devices. Here show only parts of the whole testing.
Packaging
Gernerally, Sibetter Silicone provide the silicone rubber with 20kg/25kg per pail.
SIBETTER SERVICE
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2. After-sale services:
Provide considerate services to minimize your worries.
(1) you would get the specific using instruction if you don’t know how to make the mould or products
(2) If you met any problem, reply would be got in 24 hours
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If you need any further information about the liquid silicone rubber, pls feel free to contact Vicky:
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SKype: vicky(at)sibetter(dot)com
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