PLASTIC INJECTION MOLDING SERVICES
OVERVIEW
One of the largest benefits Sigma Seals & Gaskets can provide to its customers is a broad range of manufacturing capabilities. With other manufacturers, customers need to source parts individually. Where others fall short, Sigma Seals & Gaskets steps up. Our ability to manufacture, source, package, and ship parts on time even in an emergency makes Sigma Seals & Gaskets your one stop injection molding shop.
How it Works
Injection molding produces parts by forcing molten plastic into a mold where it cools and hardens. Granular plastic is fed by gravity from a hopper into a heated barrel. As the granules are moved forward by a screw-type plunger, the plastic is forced into a heating chamber, where it is melted. As the plunger advances further, the melted plastic is forced through a nozzle into the mold cavity. The mold remains relatively cold so the plastic solidifies almost as soon as the mold is filled. Custom steel tooling is required and adds to the initial cost but is quickly amortized.
Materials
The following materials are some of the ones commonly molded:
PEEK
Nylon
Acetal
Polycarbonate
Polystyrene
Acrylic
PTFE
ABS
PVC
The list above is not all inclusive, and we have the capability of providing you with the material you need.
Advantages
Injection molding produces parts by forcing molten plastic into a mold where it cools and hardens. Granular plastic is fed by gravity from a hopper into a heated barrel. As the granules are moved forward by a screw-type plunger, the plastic is forced into a heating chamber, where it is melted. As the plunger advances further, the melted plastic is forced through a nozzle into the mold cavity. The mold remains relatively cold so the plastic solidifies almost as soon as the mold is filled. Custom steel tooling is required and adds to the initial cost but is quickly amortized.
QUALITY GUARANTEE
Sigma Seals & Gaskets seeks to create an environment in which we strive for perfection. We always aim to ensure that our successful quality control is maintained and moreover improved. Sigma is an established, dependable, and reliable source and we are constantly pursuing efficiency and maintaining stringent quality assurance in all factors of production.
Quality is never an accident. It is always the result of intelligent effort. – John Ruskin