Recognized as the simplest form of thermal set molding, compression molding produces rubber molds that vary in size and complexity. Uncured rubber is shaped to the correct size and specification and is then placed on one of the many mold cavities before closure. Compression molds are ideal for low to medium production volume projects and prototyping. Most common products made by compression molds are o-rings, seals and gaskets.
Unlike compression molding, transfer molding does not place uncured rubber directly into the mold. Instead, it is kept in a transfer pot, which is positioned above the cavity area. When ready, the mold is transferred into the cavity by a piston through a runner, sprue and gate system. By utilizing heat and pressure, the rubber becomes vulcanized or cured.
Many rubber product manufacturers consider custom rubber transfer molding more accurate than compression molding. Its accuracy reduces reject rates on small to medium runs of precision custom rubber parts or components. Additional advantages include shorter cure times and reduced mold making labor.
Similar to custom rubber transfer molding, injection molding injects rubber material into the cavity after the mold is closed. Rubber material is heated and forced into the mold through an injection nozzle. Kingson Mold produces a virtual flash-free finish, which eliminates the need for additional trim work. Injection molding is utilized when high quality must match high volume.
LSR molds can require much more precision and expertise than molds for thermoplastics. LSR molding is a process to produce pliable, durable parts and ideal for high production molding, faster cycle times, and little to no flash but can have very complex geometries. The major difference between them is the requirements for fitment between cavity inserts. Many thermoplastic materials can be molded with limited flash using fits between inserts of up to 0.002 in. But many LSRs will flash even with fits as tight as 0.0001 in. or less. This fit requirement necessitates a different level of engineering, machining, and precision. Liquid Silicone Injection uses conventional hot runner or cold runner designs.
We highly recommend heated platens when running your liquid silicone injection mold machine, the benefits of heated platens are:
We manufacture high quality plastic injection molds from a simple single cavity prototype to a high cavitation class 101 production mold.
With our plastic injection molds we offer a complete in house mold design with 2D and 3D drawings/ models. Our high precision department has the ability to work on close tolerance cavity demands.
Along with our LSR and Plastic injection molds, we also have the capability of manufacturing die cast molds and other types of tooling. we produce many custom fixtures and gages foe the aerospace industry.
Ideal for high production molding, faster cycle times, and little to no flash.
Cold runner systems are designed to save on material waste and reduce cycle time. Cold runner systems enhance automation capabilities, eliminate second operations, and decrease processing time. Two Cold Deck Systems are available:
– Up to 64 cold drops on a single system
– Maintenance free design
– Economically priced
– Excellent versatility
– Enhanced control capabilities with sequential valve gated control
– Excellent gate vestige
– Optimal Part Quality
– Design Flexibility Up to 16 drops on a single system