Hi-Rel Plastics & Molding

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Riverside, CA  |  951-354-0258

Founded in 1984, Hi-Rel Plastics & Molding, Inc. is a turn-key manufacturer who offers custom plastic injection molding and custom blow molding for a variety of industries. Our facility enables us to serve every facet of the molding process from part evaluation, 3D Printing, prototyping, tool design, tool making, sampling and production of quality finished plastic and metal parts. With more than 35 years of experience our quality products is unparalleled, processes an almost infinite variety of thermoplastic resins, our prices are competitive, our delivery is on time, and superior customer service. Value-added services include label application, assembly services, and custom packaging and shipping services. Our designers and engineers have the technical and practical knowledge as well as problem-solving expertise to develop the perfect solution for your requirements. Our company is ISO 9001:2015, AS 9100 Rev D, 13485:2016 Certified.

Rotational Molding Power Pages

Rotational Molding

Blow Molding

Rotational molding, commonly referred to as “rotomolding”, is a plastic casting technique used to produce large hollow, seamless, and double-walled parts. It is a three-stage process that involves a mold on a rotating frame, a heating chamber, and a cooling chamber. Molds for the rotomolding process are specially designed….

Blow Molding

Blow Molding

Blow molding is a type of plastic forming process for creating hollow plastic products made from thermoplastic materials. The process involves heating and inflating a plastic tube known as a parison or preform. The parison is placed between two dies that contain the desired shape of the product…

Compression Molding

Compression Molding

Molding is a manufacturing process that uses a mold – the latter being a solid container used to give shape to a piece of material. It is a forming process. The form is transferred from the mold to the material by…

Plastic Coating

Plastic Coating

Plastic coating is the application of liquid polymers or plastic on the surface of a workpiece by dipping or immersion. The result is a thick plastic finish for protective and decorative purposes. This gives the material additional resistance against…

Fiberglass Molding

Fiberglass Molding

Fiberglass molding is a method for forming complex and intricate parts using fiberglass resin. Though there are several reasons for producing parts and components from fiberglass, the most pressing reasons are the…

Polyurethane Molding

Polyurethane Molding

Polyurethane molding is the process of fabricating or manufacturing plastic parts by introducing a urethane polymer system into a tool or mold and allowing it to cure. Like any other type of plastic, the excellent processability…

Plastic Injection Molding

Plastic Injection Molding

Plastic injection molding, or commonly referred to as injection molding, is a manufacturing process used in the mass fabrication of plastic parts. It involves an injection of molten plastic material into the mold where it cools and…

Rubber Molding

Rubber Molding

Rubber molding is a process of transforming uncured rubber or an elastomer into a usable product by transferring, compressing, or injecting raw rubber material into a metal mold cavity…

Rubber Injection Molding

Rubber Injection Molding

Rubber injection molding is when uncured rubber is transformed into a usable product by injecting raw rubber material into a mold cavity made of metal. The applied pressure produces a chemical reaction like…

Plastic Molding Processes
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