What is reaction injection molding?
Reaction Injection Molding (RIM), also known as low-pressure reaction injection molding,is a new manufacturing process applied to rapid molds.RIM mainly mixes two-component polyurethane materials and injects them into rapid molds at normal temperature and low pressure. Chemical and physical processes such as polymerization,cross-linking,and curing form products. It has the advantages of high efficiency, short production cycle and low cost. It is suitable for small batch trial production in the product development process, as well as the production of small batch production of covering parts with relatively simple structures and large thick-walled and uneven-walled products.
How reaction injection molding work?
The RIM process is as follows:the monomer or prepolymer enters the mixing head in a certain ratio through a metering pump in a liquid state for mixing.After the mixture is injected into the mold, it reacts quickly and cross-links and solidifies in the mold,and the RIM product is formed after demoulding. This process can be simplified as: storage → metering → mixing → filling → curing → demoulding → post-processing.
The advantages of reaction injection molding.
- High efficiency,short production cycle, simple process and low cost,and can be made into parts with different densities,hardness and elasticity.
- Compared with the vacuum casting or injection molding process, the size of the formed product is larger,suitable for forming products with large wall thickness and no sink marks on the surface.
- The molded product has a good packaging effect,which can meet the purposes of appearance design verification, structural testing, etc.
- Compared with the traditional mold technology and process, the cost and cycle are greatly reduced.
How to choose reaction injection molding(RIM) manufacturer in China.
It is not easy to choose a strong RIM manufacturer in China.If customers cannot identify,they can consider using the number of devices as a rigid indicator.Because this not only affects the delivery date, but also the standard for identifying small workshops. Generally speaking, small workshops only have two or three pieces of equipment, and the delivery time is often affected due to the low machine configuration and batch processing.Too many quantities need to be outsourced to affect the quality.At Jevny(www.jevny.com),we have enough RIM equipments to support your project.Why choose us:
1.More than 16 years in RIM manufacturing in China,focus on all kinds of large size parts.
2.Various surface treatment services support your project.
3.Full set of testing equipments to make sure all high quality parts before shipment.
Any RFQ for RIM parts,drop mail to freequote@jevny.com,we would like to reply and quote within 2 hours.
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