difference between the Color mold and the overmolding

A. color mold: two on the same plastic material injection molding machine, a two-molding, but the product only once a die mold. In general this is also called double injection molding process is usually done by a mold, and the need for specialized color injection molding machine. B. encapsulated mold (secondary molding): two plastic materials are not necessarily on the same injection molding machine, a two-molding; the product is removed from the mold of a mold, then put another set mold for a second injection molding. So, in general this molding process is usually done by two sets of molds, without the need for a dedicated two-color injection molding machine. Color die and overmolding Overview:

overmolding design should pay attention to locate hard plastic pieces, you need to do can be a sealed plastic and rubber parts in the anti-gradient holes to prevent pulling plastic deformation.

Color mold growing popularity on the market today, in this process can make the product look more beautiful, easy to change colors and you can not spray, but expensive, technically demanding.

1.Cavity two shapes are different, each forming one kind of product. The two shapes Core exactly the same.

2. Before the mold after mold after the center of rotation 180o, must match. This action must be done to check the design. 3. Note that the top position of the pinhole, the minimum distance 210mm. A large number of top mold shall be appropriate to increase the stick hole. Moreover, since the injection molding machine itself comes with a thimble is not long enough, so we must be designed to lengthen mold thimble, thimble grow mold base plate about 150mm.

Must be designed 2 3. After locating ring mold base plate.

4. The total thickness of the front panel plus A plate mold of not less than 170mm. Please carefully review this type of injection molding machines other reference data, for example, the maximum capacity of the mold thickness, the minimum thickness tolerance mode, the top rod hole distance.

5. The three-plate mold outlet preferably designed to be automatic ejection action. Pay particular attention to the release of soft outlet whether action *.

6. The front side SPRUE depth of not more than 65mm. On the side (large outlet) Top SPRUE distance from the center of the mold base to not less than 150mm.

7. In the second injection CAVITY design, in order to avoid CAVITY plug (or rub) injury has been forming a good product first plastic bits, you can avoid the empty part of the design. However, the intensity must be carefully considered every sealed plastic bits, namely: in injection molding, whether there will be at high injection pressure, the plastic deformation occurs, resulting in possible second injection may be generated batch front

  8. injection molding, injection molding products for the first time can be slightly larger size to make it in the second molding presses with another CAVITY tighter in order to achieve the role of sealant.

9. Note that in the second injection, the plastic flow of whether the first impulse has been forming a good product to glue bit deformed? If there is a possibility, must find ways to improve.

10. Before A, B plate clamping, pay attention to whether or Lifter front mold Slider will be reset and the crushed product? So, we must find ways to make the A, B board first mold, mold SLIDER before or after LIFET to reset.

11. The two CAVITY and CORE's carrying water arrangement as fully as possible, and the balance, the same.

12.99% of injection molded hard plastic case is the first part of the product, and then injection molded soft part of the product. Because soft deformation.

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