How does RIM molding work?

In RP molding industry, low-pressure pouring is one of the crafts. It is a new craft which is mainly used for small volume production and  rapid tooling. Two-component PU materials are mixed and then injected to the RIM mould under normal temperature and low-pressure condition, then products are made after physical and chemical processes, including material polymerization, crosslinking, solidification, etc.

Applicable mould: ABS mold (over 100 pcs);

Resin mould (over 300  pcs);

Aluminum alloy mould (over 1000 pcs).

Injection materials: Two-component PU

Normal working time: 15-30 min / pcs. The demolding temperature can be controlled under 40℃. The performance will be the best if parts are solidified for 2-4h under 80℃ after demolding.

Standard tolerance: ±0.20mm/100mm

Viewing of RIM technology

The basic guiding principle of RIM molding of RPS includes the important design consideration which help improve the manufacturability of parts.