With the creation of a mold in epoxy resin or silicone (previously issued from a master model which was developed in stereolithography), a prototype can take shape.
The imprint of the tools is then filled with polyurethane resin, with the help of a specific machine.
The lifespan of the tools can range from 30 to 100 pieces; it essentially depends on the geometry of your pieces.
Rigid: Close ABS, PP
2 to 3 weeks for tools with a production rate of 10 of 30 pieces per
Molding by the RIM process is one of the rapid prototyping technologies that Axis offers you.
RIM (Reaction in molding) molding is a fast prototyping method which enables the large scale production of pieces of large or medium sizes. To make casts, it is necessary to first create a piece (master model) in stereolithography. The prototype print is thus created in a silicone mold. Polyurethane is injected into the mold at low pressure, using a pistol. Just like with vacuum casting, our prototypists must deburr the resulting products.
Our strong points
Panel of technical resins
Overmolding or laying metallic inserts
The sub-assemblies are always developed as per your functionality criteria
Realistic surface state: glossy, satin, grained, obtained by painting finish Painting CEM
Mechanical and thermal test of large pieces
Large size pieces
Economical alternative to injection
ADVANTAGES WITH RIM
Parts made with RIM have an increased resistance to shock and friction. The pieces have a good surface appearance (close to injected parts). There is a good polyurethane paints “connection”. The prototypes are ”good material” (close to plastic injection). The necessary investment is less than that required for compression or injection.
DISADVANTAGES WITH RIM
The mechanical characteristics (Young module and tensile strength) are weak. The dimensional stability with temperature is relatively low. The cost is increased.