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SMC Mould

What is SMC(sheet molding compound)?

SMC is a mixture of polymer resin, inert fillers (calcium carbonate, talc or wollastonite), fibre reinforcement, catalysts, pigments, stabilizers, release agents, and thickeners. The glass reinforcement is between 10% and 60%, and the fiber length is slightly longer than that of the bulk molding compounds (BMC). SMC production method assures full integration of fibres and resins. Manufacturing of SMC is a continuous in-line process. General situation: Sheet molding compound made of resin paste impregnated fibre or chopped fibre mat covered with polyhexene film on both sides.

This moulding compound main consists of two parts: Thermoset Resins - These are rigid materials that cannot be melted or reformed once hardened. They are typically used in engineering applications where materials need to retain their shape under high stress. The most commonly used thermoset resins in SMC are epoxy (epichlorohydrin) polyurethane (PUR) and polyester (PET). Thermoplastics - These are flexible materials that can be heated and reformed many times before they start to break down. The most commonly used thermoplastic in SMC is polyphenylene sulfide (PPS).

The main advantage of SMC is that it can be easily moulded into any shape or size required. SMC also has excellent mechanical properties, such as durability, light weight, high flexural strength, stiffness, toughness, creep resistance, high fatigue strength and impact resistance.

SMC (sheet molding compound)

What Is SMC Mould?

SMC mould is high-strength, high hardness mould made of steel plates with polished surfaces to ensure the quality surface of the SMC moulded parts. Compression moulds of SMC usually use a hydraulic press machine and the cavity and core are fixed to the top and bottom platens. Once the material is placed into the open mould, the machine closes, the mould gets heated, and then the press pressure forces the SMC material to flow all over the mould. The main feature of this mould is that it is made by using a compression process in order to compress the SMC material into the final product.

SMC moulding

Key points of SMC mould design

SMC compression moulding processing

What is SMC compression moulding? SMC compression moulding is an advanced composite material moulding method. SMC moulding process is continuous, this produces high strength, complex parts in a wide variety of sizes. SMC moulding takes place in a device called a “compression moulding press,” which is usually hydraulically powered. The material charge is placed in the mould; the heated mould halves are closed, and up to 2,000psi of pressure is applied. Cycle time ranges from one to five minutes, depending on part size and thickness. Features such as ribs, bosses and inserts can be compression moulded in. As a result, constant heat and pressure are used and the SMC are spread and properly filled. Most moulding processes require that both the loading of SMC into the mould and the unloading of the finished product must be manually carried out by a skilled operator. Compression moulding can be used to create even more complex, detailed SMC parts with great accuracy.

SMC compression moulding process

The advantages of SMC finished products are as follows:

Compression moulded SMC parts are characterized by size and shape, two excellent finished surfaces, and outstanding part-to-part repeatability. Trimming and finishing costs are minimal.

SMC mould manufacturer

As a China SMC mould manufacturer, MDC has long research in this field and has successfully developed projects such as SMC bathtub mould, SMC shower tray mould, SMC wash basin mould and so on. In the meantime, with 4000T press machine investment, MDC is able to meet customers' requirements of try-out for the part dimension ranging from smaller ones to 3,500x3, 200MM. You can use our capabilities in mould design, mould making, and mould testing to meet your need. Our customers are Mercedes Benz, Audi, GM, etc.

SMC mould project

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China SMC molds project

The Application of SMC Mould in the Front Panel

SMC Door Skins Molds

SMC mold heat treatment technology

How to manufacture and produce SMC molds more prof

The application of SMC in the whole bathroom

The application of SMC mould on tractor

Do you know why the bumper of the bus is made of SMC mould?

People also ask

What is an SMC bathtub?

SMC bathtubs are made of a special type of glass-reinforced plastic called sheet moulding compound. The tub is one-piece, eliminating seams and allowing for more complex shapes.

SMC tubs tend to be more expensive than cast iron or acrylic, but they're also less likely to crack or chip. Therefore it is one of the most cost-effective options for bathroom remodeling projects and new builds.

As a professional SMC bathroom mold manufacturer in China, MDC has rich experience in SMC bathtub mold production.

What is SMC fiberglass?

SMC fiberglass is a glass reinforced with polymer resin, which makes it particularly strong and durable. It can be used in everything from aircraft parts to wind turbines, electronic equipment housings and more.

SMC consists of two layers of fiberglass cloth with epoxy adhesive sandwiched in between. The two layers are mechanically pressed together during the moulding process, which holds them together at the molecular level.

The process of making SMC fiberglass is similar to making any other type of fiberglass. The main difference is that the resins used in fiberglass contain more than one polymer molecule—usually styrene and acrylonitrile (SNAP), styrene-butadiene (SBR), or styrene ethylene butadiene (SEB).

What is an SMC manufacturing process?

The SMC manufacturing process is a method of manufacturing solid material composites using resins derived from thermoplastic polymers. The process consists of three basic steps: 1. Resin preparation 2. Fabrication 3. Curing

This plastic can be formed into the desired shape using an injection or compression moulding process.

What is SMC used for?

SMC materials are usually formed by the hot-compression process. This moulding process can be used to make a variety of products, including automotive parts, aerospace components, medical devices, and sports equipment. It can be used in a variety of applications such as:

  • Building materials
  • electronic product
  • Auto parts manufacturing
  • Medical device manufacturing
  • Automotive industry
  • Household and commercial appliance manufacturing facilities

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