SMC Mold

The full name of SMC is Sheet Molding Compound. SMC is made of resin paste impregnated fiber or chopped fiber mat and covered with the polyethylene film on both sides. SMC belongs to the range of prepreg felt and is one of the most widely used molding materials in the world.
The SMC molding process is an advanced composite molding method, and the SMC mold is the basis of the molding process. Good product quality is guaranteed by reliable molds. Therefore, the design of the mold is particularly important in the entire SMC mold production work.
In the SMC mold design process, the mold cavity should be designed according to the specific dimensions of the product. In addition to this, it is necessary to select the appropriate material according to the surface quality requirements of the product and the size of the demand. In order to ensure product quality and process feasibility, the cutting edge and the ejection system of the mold should be designed reasonably. In order to make the product easy to demold, ensure product accuracy, strength and facilitate mold processing and other factors, the selection of parting surface should consider the following principles:
① In order to make the product easy to launch and simplify the ejection mechanism, the position of the parting surface should be such that the product can be left in the lower mold as much as possible after opening the mold;
② Minimize the damage of the flash to the appearance of the product, and at the same time, it should be easy to remove the residual flash;
③ It is convenient for mold manufacturing and mold parts processing;
④For products with high requirements for radial dimensional accuracy, the influence of flash thickness on product accuracy should be considered, and the vertical parting surface can be taken to ensure the product radial accuracy;
⑤Ensure the strength of the product and avoid sharp corners and thin walls.

China SMC mould manufacturer

As a professional SMC Mould manufacturer in china, MDC mould can provide SMC mould and low volume quantities of SMC molding service with our customers.

SMC Mould process produces high strength, complex parts in a wide variety of sizes. The SMC material charge is manually or robotically placed in SMC mould; the heated mold halves are closed, pressure can be available applied from 500T till 4000T at MDC workshop, cycle time ranges from one to five minutes, depending on part size and thickness. Features such as ribs, bosses and inserts can be molded in.

In-mold coating(IMC) and vacuum system in SMC mould are available to improve surface paint ability, eliminating the need for primer. Color compounds can be customized.

if anybody has urgent SMC mold or SMC Molding projects or delivery time pressure, MDC team will give them support, as all of our milling machines are working at 24 hours with 2 shifts.
Please don’t forget that we’re a professional compression mold maker and foaming tool maker. We will stay at your disposal. Please keep us informed, when any questions or requirements.

What is compression mold

Compression molding, used for compression mold, is a molding method according to the characteristics of each stage in plastic curing reaction, and often used to produce high-quality composite parts. Compression molding materials are usually powder, granular or fibrous plastic, such as thermoplastic(LFT, GMT,LWRT), rubber and thermosetting plastic(SMC, BMC), Or new composites(SymaLITE,carbon fiber).

What is compression molding process?
Firstly, plastic is put into the cavity at the molding temperature, then close the mold, the material inside the cavity becomes a molten state under the high heat and high pressure, and then fills in the whole cavity. After curing, the product is ejected by ejector, repairing the flash. For compression molding, material, shape, compression, temperature, part thickness, cycle time must be considered. You must analyze the characteristics of the materials to ensure the product perfectly. Molding cycle time is something with material, part feature, mold design, temperature, pressure, etc.

What are the advantages and disadvantages of compression mold?
Advantages of compression mold:
(1)The loss of raw materials, the wear of the mold cavity is small, and the maintenance cost of the mold is low.
(2)It can be used to form large flat products. High dimensional accuracy, small shrinkage, low internal stress, the mechanical properties are relatively stable. The surface is smooth without secondary modification.
(3)The cost of the molding machine is lower, the mold structure is simpler, multiple cavities can be produced at lower cost, and the manufacturing cost is usually lower than that of the injection mold.

Disadvantages of compression mold:
(1)At present, it is not suitable for molding complex products with depressions, side slopes or small holes.
(2)Burrs must be trimmed manually
(3)For thermosetting plastics, when the molded products have slight defects, they are often unable to be recycled.

What is compression molding used for?
Compression molding is widely used in industry, agriculture, automotive industry, electricity, chemical industry, construction and other fields. MDC has developed compression molds such as spoiler templates, fenders, bumpers, front panel on trucks, engine covers, doors, bottom fenders, car ceilings, seat backs, electric boxes and bathroom door panel basin, etc.

Compression mould

compression moldcompression mold

What’s LWRT Mold?

As a leading LWRT Mold maker, we’re pleased to introduce new technology named LWRT for somebody else.

LWRT means Low weight reinforced thermoplastics. This type of material has been widely used in underbody shield of Automotive industry. both for Interior and exterior parts.

LWRT composite sheets are typically thermoformed into parts with a desired geometry.
Thermoforming is a stretch-forming process resulting in a reduction of the sheet’s original thickness. The deeper the cavity of the geometry is designed, the thinner the wall thickness of the final part will be.
The formability of the sheet material is its ability to form into parts with desired geometry without failure. The geometry of the parts varies according to different applications, and some
applications have a very complex geometric design. A good example of such applications is trunk trim, which has a deep-drawn, multi-cavity geometry.

The advantage of LWRT material would be:

1.weight reduction of at least 25% compared to traditional technologies

2.acoustic performance satisfaction without need for additional sound-absorbing elements to be welded or over-molded per piece.

MDC Mould, as a professional LWRT Mold maker, has produced many molds for our customers, such as Audi, BMW, Daimler, Jaguar, etc.

Please keep us in touch as below info, if you required.

Taizhou Huangyan MDC Mould&Plastic Co.,ltd

No.35-1 Qingfeng Rd, Huangyan North Industrial estate, Taizhou, Zhejiang, china 318020

E-mail:mater@zjmdc.com;

What are the advantages of parting surface design?

In order to make the product easy to eject and simplify the ejection system, the position of the parting surface should make the product leave the bottom mold after the mold is opened;

  1. Reduce the damage of flash to the appearance of the product, and at the same time facilitate the removal of flash;
  2. Facilitate mold manufacturing and mold parts processing;
  3. For products with high requirements for radial dimensional accuracy, the effect of flanging thickness on the product accuracy should be considered, and the vertical parting surface should be taken to ensure the radial accuracy of products;
  4. Ensure the strength of the product and avoid sharp angle and weak walls.

It is very important to design the parting surface. The parting design should be carried out at the initial stage of mold design to draw the parting design drawing, so as to ensure the smooth demoulding of the product and facilitate production.

Please keep in touch with us, when any doubts on GMT Mould.

Taizhou Huangyan MDC Mould&Plastic Co.,ltd

Add: No.35-1 Qingfeng Rd, Huangyan North industrial estate, Taizhou City, ZheJiang, China, 318020

E-mail:master@zjmdc.com

MDC mould, Compression mould
Tel:+86-576-84616076

MDC in JEC World 2019

2019 JEC world was taken place on 12-14 March as scheduled. As the leading SMC/GMT mould manufacturer in China, MDC Mould always pay close attention to the changed and development of composites Industry.

In regards this composite exhibition, too many experts who have experienced in composite industry focus on the most advanced technology for Aero&Space, Auto&Transport, Construction&Energy, and introduce the discovery for the latest trends per industry. MDC keep to collect the information and growing up year by year

Please keep in touch with us, when any doubts on SMC/GMT Mould.

Taizhou Huangyan MDC Mould&Plastic Co.,ltd

Add: No.35-1 Qingfeng Rd, Huangyan North industrial estate, Taizhou City, ZheJiang, China, 318020

E-mail:master@zjmdc.com;

Tel:+86-576-84616076

MDC mould, SMC mould, BMC mould, GMT mould, Compression mould

What’s BMC Mould?

BMC mold is used a thermo plastic made up of a polymer resin, various inert fillers, fiber reinforcement, catalysts, stabilizers, and pigments that form a viscous. It is highly filled and reinforced with short fibers.

Depending on the end-use application, compounds are formulated to achieve tight dimensional control, flame resistance, high dielectric strength, corrosion and stain resistance and color stability. Its excellent flow characteristics make BMC mold well suited to a wide variety of applications requiring precision in detail and dimensions. The material is available in a wide variety of colors.

In addition, BMC mold is suitable for either compression molding or injection molding. BMC compressing molding is used to produce complex components such as electrical equipment, car components, housings for electrical appliances and tools, in large industrial volumes.

MDC Mould, as a professional BMC mold maker, is able to make BMC compression mold, as well as BMC injection mold with gate cutting.

If you’re interesting, please contact us as follows:

Taizhou Huangyan MDC Mould&Plastic Co.,ltd

No.35-1 Qingfeng Rd, Huangyan North industrial estate, Taizhou City, ZheJiang Province, china 318020

E-mail:master@zjmdc.com

BMC mould, Compression mould

What is GMT MOULD?

MDC specialized in compression mould, GMT mould is one kind of them .

so what is GMT ?

GMT is Glass Mat Reinforced Thermoplasitcs, a kind of sheet molding compound with fiber reinforced thermoplastic. It is produced on huge laminators, using a thermoplastic resin and one or more forms of reinforcement. The process yields a lightweight, partially consolidated, semifinished composite in sheet form. Most forms are produced to 1,300 mm to 1,400 mm widths. However, some newer forms are made to greater but proprietary widths. The sheet stock may be cut to size to suit placement in the tool for a specific application and also can incorporate a decorative or functional surface laminated to one side. GMT mould makes possible the production of large parts with low tooling costs and fast cycle times via compression molding. The potential for parts consolidation presents the opportunity to further reduce weight and cost.

What’s the advantage of GMT mould?

Utilization of regenerated; Low forming pressure; Long storage period; Short shaping cycle; High production efficiency

What’s the mostly application of GMT mold?

GMT mold is mostly used in Automotive and building&construction, chemical industry, packaging, sport equipment, etc.

Please keep in touch with us, when any doubts on GMT Mould.

Taizhou Huangyan MDC Mould&Plastic Co.,ltd

Add: No.35-1 Qingfeng Rd, Huangyan North industrial estate, Taizhou City, ZheJiang, China, 318020

E-mail:master@zjmdc.com

Tel:+86-576-84616076

GMT mould, Compression mould

GMT mold

Molding temperature of compression mould

The molding temperature depends on the curing system of the resin paste, the thickness of the product, the production efficiency, and the complexity of the structure of the product. The molding temperature must ensure the initiation of the curing system, the smooth progress of the crosslinking reaction, and complete curing.

In general, part having a large thickness should have a lower molding temperature than a thin-walled part, which prevents excessive heat produce heat build-up inside the thick part. If the thickness of the product is 25-32 mm, the molding temperature is 135-145 °C. Thinner part can be formed at 171 °C.

The increase of the molding temperature can shorten the corresponding curing time; conversely, when the molding temperature is lowered, the corresponding curing time needs to be extended. The molding temperature should be chosen between the fastest cure speed and the optimum molding conditions. It is generally believed that the SMC molding temperature is between 120 and 155 °C.

Mold detail about the compression mould, please don’t hesitate to keep us informed as below:

Taizhou HuangYan MDC Mould&Plastic Co.,ltd

Add:No.35-1 Qingfeng Rd, Huangyan north industrial estate, Taizhou city, ZheJiang Province, China,

T:+86-576-84616076;

F:+86-576-84616079

E-mail:master@zjmdc.com;

Compression mould

SMC production technology

Sheet molding compound (SMC) is a kind of sheet molding compound made by impregnating fiber or chopped fiber felt with resin paste and covering polyethylene films on both sides, which belongs to the range of prepreg felt. It is one of the most widely used molding materials in the world.

SMC, as a new type of molding compound with rapid development, has many characteristics: (1). It has good reproducibility and is not affected by operators and external conditions; (2). convenient operation and treatment; (3) the operating environment is clean and sanitary, improving working conditions; (4) has good fluidity and can form special-shaped products. Good quality uniformity, suitable for pressing large thin-walled products with little change in cross section; (5)? The surface finish of the obtained product is high, (6) the production efficiency is high, and the forming period is short.

Taizhou HuangYan MDC Mould & Plastic Co.,LTD
Add:No 35-1 QingFeng Road, North Industrial Estate, Huangyan, Zhejiang,China. (Zip code:318020)
Tel: +86 576 84616076
Fax:+86 576 84616079
Email:master@zjmdc.com
MDC mould, SMC mould