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We are the professional SMC materials maker selling various SMC products, and we have a high reputation in the world.

First of all, let me introduce my factory, my factory is in Dalian, we have the most advanced equipment, we have the strict process of production, making sure that every link of the production is perfect. My factory is 20000 square meters with 200 workers, so the work capability is wonderful .And the core competing power is customization, we can customize different products for you. Ranging from sink, basin, tank ,to spare parts for electric use, anything that is made of SMC, as long as you give us the samples ,we can make perfect one for you with the reasonable and extremely low price, in a word, we can make anything made of SMC with the inexpensive price and super good quality.

Then let me write something about SMC.SMC is short for sheet molding compound. The advantages of SMC are: no harm to the environment ,flame retardant, anti-corruption, super long service life, lighter (comparing to the equal material), waterproof, insulated, and due to the production craft, we can make any shape, any color for different products, they are more beautiful and more choices to show the products.

And this craft has been used in many fields, such as automobile industry, electricity, and so many little parts.

With the development of the society, the demands for new products with no harm to the environment, lighter, longer service life, are pressing, people need the more safe products with the best quality. So SMC coming out, it is his responsibility to bear the burden, and to change the landscape of the current industry.

In the automobile industry, there are challenge and opportunity at the same time. SMC now is showing up, the one can make the better products with the better craft will win this technique battle.

Freedom CAR and Vehicle Technologies Program in USA has pronounced that, the cars in 2015 will be much lighter than the ones now. More energy saving, no harm to the environment, more lighter, more convenient, the price will be affordable to the public even the poor people, the weight will be half of now, more recyclable, better quality and durability with the same or the better performance.

So is other fields, the SMC is need in so many other fields.

Next, I’ll introduce the SMC, different ones with the similar character, BMC and SMC, both the new advanced materials.

Bulk Molding Compound (BMC) is a thermoset plastic resin blend of various inert fillers, fiber reinforcement, catalysts, stabilizers, and pigments that form a viscous, 'puttylike' injection molding compound. Bulk Molding Compound (BMC) is highly filled and reinforced with short fibers. Glass reinforcement represents between 10% and 30%, with glass length typically between 1/32-inch and 1/2-inch (12.5mm). Depending on the end-use application, bulk molding compounds are formulated to achieve close dimensional control, flame and track resistance, electrical insulation, corrosion and stain resistance, superior mechanical properties, low shrink, and color stability. Its excellent flow characteristics, dielectric properties, and flame resistance make this thermoset material well-suited to a wide variety of applications requiring precision in detail and dimensions as well as high performance. The material is available in a broad selection of colors, and can tolerate powder-coat or water-based paint.

Sheet Molding Compound (SMC) is a compression molding compound often used for larger parts where higher mechanical strength is needed. SMC is a fiber reinforced thermoset material. Glass reinforcement is between 10% and 60%, and glass length is slightly longer than Bulk Molding Compound (BMC) - between 1/2-inch and 1-inch (25mm). As with BMC, thermoset Sheet Molding Compound (SMC) is a mixture of polymer resin, inert fillers, fiber reinforcement, catalysts, pigments and stabilizers, release agents, and thickeners and possesses strong dielectric properties. Manufacture of sheet molding compounds is a continuous in-line process. The material is sheathed both top and bottom with a polyethylene or nylon plastic film to prevent auto-adhesion. The paste is spread uniformly onto the bottom film. Chopped glass fibers are randomly deposited onto the paste. The top film is introduced and the sandwich is rolled into a pre-determined thickness. The sheet is allowed to mature for 48 hours. Sheet molding compounds can be molded into complex shapes. Superior mechanical properties and surface appearance, plus excellent electrical insulation make this thermoset material ideal for automotive Class A body panels, high-strength electrical parts, business equipment cabinets, personal watercraft, and various structural components.

Sheet molding compound (SMC) is a ready-to-use, glass reinforced thermoset polymer resin in sheet form commonly found in compression molding processes. The product is manufactured by extruding a layer of resin compound onto a plastic sheet and applying chopped glass fiber rovings to its surface. Once the fiber strands have penetrated the resin, a top layer of plastic is applied and the completed resin sheet is rolled up and left to mature. When the resin has matured, the sheet may be cut to size and placed in the mold where heat and pressure completes the curing process. The SMC process is desirable because it may be used to mold complex shapes with little waste, requires minimal labor, and makes high production volumes possible.

Ready-to-use thermoset resins are widely used in the injection and compression molding industries and are presented in two basic formats: bulk molding compound and sheet molding compound. SMC is often the preferred choice for compression molding processes and consists of flat sheets of matured, glass fiber impregnated resin. The sheets are available in rolls weighing up to 880 lbs. (400 kg) which are cut to size prior to molding. These resin rolls are typically interleaved with plastic sheets to prevent the layers from adhering to each other.

Typical sheet molding compound production involves dispensing a layer of compound consisting of resin, catalyst, fillers, coloring, mold release, and maturation agents onto a sheet of plastic. Glass fiber rovings are then chopped into strands approximately 1 inch (25.4 mm) long and distributed onto the surface of the resin layer. These strands penetrate the layer evenly to form a reinforcing matrix at which point a second sheet of plastic is placed on top. The completed composite sheet is then rolled up and removed to a storage area where it is left to mature for approximately 48 hours. Once exposed to heat and pressure in the mold, the sheet molding compound cures completely and the finished product may be removed.

Products manufactured from sheet molding compound stock exhibit excellent mechanical strength, good surface appearance, and outstanding electrical insulation properties. These characteristics make SMC products ideal for the production of boat hulls, high demand electrical components, class A automobile body parts, and sanitary ware. Processes utilizing sheet molding compound stocks are also attractive because minimal labor is required, high production volumes and complex shapes are possible, and very little scrap is generated.

Next let’s talk about my factory’s process of making the SMC. Raw materials are ready, including resin, after inspection mix them in the blender, next will be put into the machine with fiber, to get the semi-finished materials, after the inspection, the material will be put into the mold, after the pressing, the products are coming out, then do some little things to make the products smooth with good look.

After the products are ready, they will be sent to the assembling shop to be assembled, finally the whole products are finished. We have 50 persons to do the assembling work, and there are inspectors doing the inspection randomly, making sure that, all the processes and products are perfect.

Above is the general process of SMC, let me say something about the details about the raw materials, consist of four dry ingredients – filler, fire retardant, thickener, and internal mold release –which are mixed together. The dry items are then mixed with liquid resin and a catalyst, which form a thick paste. The paste is then spread evenly over a sheet of polyethylene and sprinkled evenly with one-inch chopped glass fibers, which in turn is covered by another sheet of polyethylene. The sheet is then kneaded with heavy steel rollers until all fibers are covered with paste. The kneaded sheets are then layered and left to mature in bins for three days. The polyethylene sheets are then removed and the SMC is no longer a paste but something comparable to wet leather. It is at this point that the sheet goes into a mold under extreme heat and pressure and a desired mold is achieved