Liquid RTV 2 Silicone Rubber for Cake Mould

1. Description of liquid rtv 2 silicone rubber for cake mould
Addition-curing, Food grade, Translucent, Two-component mold making silicone.


2. Characteristics of liquid rtv 2 silicone rubber for cake mould
Acceptable for food contact
Outstanding release properties
Low viscosity
Easy mixing and degassing
High flowability
Odorless and Nontoxic
Enhanced durability


3. Application of fda rtv 2 silicone rubber rubber for making mould
Food Grade Related Applications
Cake mold
Chocolate moldmaking
Candy moldmaking
Baking moldmaking
Ice trays molding
Casting butters
Casting for Kitchen products

4. Datesheet of fda rtv 2 silicone rubber rubber for making mould

Model NO· XB-620 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 fda rtv 2 silicone rubber rubber for making mould
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.