Reaction Injection Moulding
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Reaction Injection Moulding as the name suggests (RIM)is similar to injection moulding except that in RIM thermosetting polymers are in the liquid form and are used in place of thermoplastic, which get cured in the mould by virtue of a reaction which occurs between the ingredients injected.
In RIM process, the two halves of the mould, clamped to the press platens are first closed with the help of press and then highly reactive mixture of raw materials is injected in the mould under high pressure. Mixture is then given time enough to expand and cure to the shape of the mould.
Reaction injection moulding has many advantages over other processes. It produces light weight, flexible yet very high impact strength products with cycle times as low as 3-4 minutes. The ingredients used in RIM process has very low viscosities unlike molten thermoplastics and at par with water which makes it most suitable process for manufacture of large, light weight and thin walled products, of intricate shapes and profiles.
NTF has two types for RIM technologies:
HS-RRIM – High Speed Reinforced Reaction Injection Molding
SRIM – Structural reinforced reaction Injection molding
Production
The products manufactured under Reaction Injection Moulding are exterior body parts of a car such as:
Front & Rear Bumpers
Adaptors
Side Skirts
Rear Spoilers
Fenders
Wheel Arches
Side Body Claddings
Dashboard
Grills
Rear Spoilers
Roof Ornaments
Car Styling Kits
Aero Parts
Tractor Fenders
Bonnet Bends
Bus Parts – Front and Rear Bumpers
Truck Parts - Front and Rear Bumpers
...more