Compression Molding

Compression Molding Process

Compression molding process A manufacturing process for molding polymers such as thermosetting plastics, thermoplastics, elastomers, rubber and plastic materials, and natural rubber. For example: children's pacifiers, sealing rubber rings, power insulation parts, electrical enclosures, etc.

Compression Molding Services

Mulan MFG is a professional compression molding manufacturer, focusing on precision rubber and silicone compression molding parts manufacturing services, widely used in: automotive engines, safety protection equipment, electronic equipment sealing, and power insulation accessories and other fields. We provide a series of compression molding manufacturing solutions and technical support services, from small and medium batch parts manufacturing to large rubber components, and deliver high-precision, low-cost, defect-free compression molding parts on time.

We have a professional team of compression molds technical experts, and have rich manufacturing experience and expertise in the mold manufacturing and compression molding industries, which can meet customers' various application needs and accept difficult product development projects with complex structures.

Compression Molding Applications

Compression molding parts are suitable for almost all industries. They can not only meet the size standards of complex structures, but also apply to high-temperature components, and meet the corrosion resistance of fuel, chemical, natural gas and other industries, as well as the resistance of equipment operation and mechanical parts. Grinding performance.

Mulan MFG has focused on the R&D and manufacturing of compression molding parts for more than 10 years, and has continuously accumulated manufacturing experience and expertise. Including: daily necessities such as silicone cleaning brush, tap descaling ball, headwear and so on.

● Engine Sealing Gasket   

● Safety Protective Gear   

● Kids Toys     

● O-ring

● Electrical Insulation Accessories

● Anti-vibration Casters

● Children's Pacifier

● Medical Equipment Parts

● Dental Consumable Parts

● Automobile Manufacturing Parts (Interior, Panels, Etc.)

● Electronic Product Components

 

Excellent Compression Molds Manufacturing Technology

Usually, compression molding parts select mold steel or aluminum alloy processing to make molds according to the product structure and material. No matter which material is selected, high-quality molds from professional mold manufacturers are very important. Mulan MFG, as a highly professional mold manufacturer, Through professional knowledge and advanced manufacturing equipment to provide you with the most precise and efficient mold solutions, and provide the most economically competitive Chinese compression molding manufacturer price quote.

Advantages Of Compression Molding

Compression molding composite parts can often replace the application of metal parts, provide similar strength and mechanical properties, and have the characteristics of light weight, corrosion resistance, insulation, etc., and can reduce the complex shape created by secondary processing.

It is worth mentioning that compression molding parts can also be used to increase product inserts or ribs through insert molding, without the cost of secondary processing, and one compression part can replace multiple complex components.

● Manufacturing Of Cost-Effective Parts.

● The Mold Is Simple And The Cost Is Low.

● Multi-Cavity Molds Can Be Made To Increase Efficiency.

● There Are No Traces Of Thimble And Plastic Inlet.

● Suitable For Most Thermosetting Materials.

● Rugged Parts.

● Design Flexibility Is High.

● Less Material Waste

● Performance And Strength Can Replace Metal Parts

Industry Application
Food & Medical
Military & Aerospace
Automobile Industry
Energy & Industry

Compression Molding Material Solutions

Compression molding can choose a variety of material models of thermosetting plastics and thermoplastics, their prices and performance are different, used in different application environments and functionality.

● Bulk Molding Compound (BMC)

● Sheet Molding Compound (SMC)

● Diallyl Phthalate (DAP)

● Epoxy

● Phenolics

● Silicone

● Thermoset Polyester

● Shoddy Pad

● RUS Underbodies

● Vinylester

In addition to the structure and thickness of the parts, different materials will require different mold preheating temperature, molding temperature, molding pressure, mold holding time, cooling rate, exhaust pressure, exhaust time, and locking mold pressure.

 

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What Is Compression Molding ?

Place the thermoset plastic material in the compression molds cavity, melt the thermoset material by heating, close the mold with pressure, and the melted thermoset material will instantly fill the entire cavity under the action of pressure. In this process, it is very important to control the weight, shape, and specifications of solid materials, which will directly affect product quality.

Thermosetting materials will reach the best curing state under the control of stable high pressure and high temperature. Compression molding parts are ejected, and the remaining materials are cleaned manually or by using cutting molds.

Compression molding also has the characteristics of high productivity, but it does not have the accuracy and consistency of precision injection molded parts. It can create durable simple parts at low cost. It is often used for high-volume but low-precision product needs.

This plastic molding manufacturing process, which can be completed by heat and pressure, is one of the most popular and cost-effective manufacturing processes in the manufacturing of plastic products and components.

What Are Advantages Of Compression Molding?

●  The loss of raw materials is small and will not cause too much loss (usually 2% to 5% of the product quality).

●  The internal stress of the product is very low, and the warpage deformation is also very small, and the mechanical properties are relatively stable.

●  The wear of the mold cavity is small, and the maintenance cost of the mold is low.

●  The cost of molding equipment is low, and the mold structure is simpler, and the manufacturing cost is usually lower than that of injection molds or transfer molding molds.

●  Larger flat products can be formed. The size of the products that can be formed by molding is only determined by the clamping force of the existing molding press and the size of the template.

●  The shrinkage of the product is small and the repeatability is good.

●  A mold with a large number of cavities can be placed on a given template, and the productivity is high.

●  It can be adapted to automatic feeding and automatic removal of products.

●  High production efficiency, easy to realize specialized and automated production.

●  The product has high dimensional accuracy and good repeatability.

●  The surface is smooth and clean without secondary modification.

●  Products with complex structures can be formed at one time.

●  Mass production, relatively low price.

Why Do We Use Compression Moulding?

Mainly used as structural parts, connectors, protective parts and electrical insulation parts. It is widely used in industry, agriculture, transportation, electrical, chemical, construction, machinery and other fields. Because of the reliable quality of molded products, they have also been used in weapons, aircraft, missiles, and satellites.

What Are The Disadvantages Of Compression Moulding

●  The molding cycle in the entire production process is long, the efficiency is low, and the staff has a large physical consumption.

●  It is not suitable for molding complex products with depressions, side slopes or small holes.

●  In the production process, it is difficult to completely fill the mold, and there are certain technical requirements.

●  After the curing stage is over, different products have different stiffness, which has an impact on product performance.

●  For products with high dimensional accuracy requirements (especially for multi-cavity molds), the process is somewhat short.

●  The flash of the final product is thicker, and the workload of removing the flash is large.

●  The shortcomings of compression molding are that the mold manufacturing is complicated, the investment is relatively large, and coupled with the limitation of the press, it is most suitable for mass production of small and medium composite materials.