L-200 Casting Latex

L-200 is a prevulcanized casting Latex. It is very useful for the production of hollow molded rubber articles, toys, hot-water bottles, rubber balls, imitation pottery, masks, puppet heads, and display articles. It is also useful for coating polystyrene, texturing, and general special effects for theater work. L-200 is especially useful in making flexible props. Using L-200 does not require any elaborate machinery or expensive metal molds. An ideal rubber for small studios.

Using L-200 consists of filling a porous plaster mold with either L-200 alone or with a mixture of L-200 and specific amounts of #64 filler. The plaster mold will absorb part of the water and deposit a wall of gelled L-200 (and/or L-200 and #64 filler mixture) on the mold surface. The excess L-200 is then poured out and collected for future use. It must be used in plaster. The curing process requires that the water be withdrawn.

The final steps include the partial drying of the deposited rubber, removing the rubber from the mold, and then drying completely in an oven.

Special Features of L-200

1. By varying the amount of 364 filler and L-200 Latex, a wide range of flexibilities in the final article can be achieved:

1 part L-200 to 1/2 part #64 filler - very flexible
1 part L-200 to 1 part #64 filler - Flexible
1 part L-200 to 1 1/2 part #64 filer - medium flexibility
1 part L-200 to 2 1/2 part #64 filler - very hard

2. Plaster of Paris molds are not expensive to produce, and new designs can be easily made.

3. L-200 is 61% solids, and based on prevulcanized Latex. No vulcanization treatment (post curing) is required.

4. L-200 has been specifically developed to have the correct stability and viscosity for easy pouring and painting. L-200 has also been designed to give the proper buildup in a plaster mold.

5. The simplicity of operation enables easy training of operators.