Product description
Mold features:
- Automotive Key part.
- Double-injection molding/double injection mold/ 2 shot mold/2k injection moulding technology/ two-color mould.
Part function: Component for Automotive Industry
Part material: ABS+TPU
Features: Double-shot injection molding can be used to bond a part of hard material with another soft material
Detailed explanation of characteristics of two-color mold
1. The two appearances of the cavity are different, forming a commodity respectively. The two appearances of the core are identical. (Note: if different, make mold cavity roller to ensure the consistency of the mold core)
2. The mold cavity must be consistent with the mold core after 180 ° rotation. This must be noted when designing the mold.
3. When designing the mold, please inquire about the main parameters of the two-color injection molding machine carefully, such as the thickness of the large capacity, the thickness of the small capacity, and the spacing between KO holes etc.
4. The water level of the three plate mold should preferably be designed as a fully automatic mold ejection position. Pay special attention to whether the mold position of the plastic material of hard part is reliable.
5. When formulating the mold for the second injection molding process, in order to prevent the mold from inserting (or scratching) the product position formed for the first time, we can design somespace. However, it is necessary to consider the compressive strength of each sealing position carefully , that is, whether the plastic will be injected when the processing pressure is high, the deformation may lead to flash during the second injection molding process?
6. During injection molding, the product specification of the first injection molding process can be slightly larger, so that other second molding can be compressed with another female mold, thus reaching the effect of plstic sealing.
7. Pay attention to whether the fluidity of plastic in the second injection molding process is unreasonable, and whether the first molded product will change the plastic? If possible, we must find ways to improve.
8. The water connection layout of the two cavities and cores shall be as sufficient as possible and the balance shall be the same.
9.Mostly, the hard material is injected first, and then the soft material is injected. Because hard material is easy to deform.
10. In order to better tighten the viscosity of the two plastics, the viscosity between the raw materials and the surface roughness of the mold surface should be considered.
Two color injection molding has professional TPU; The smoother the die surface, the tighter the adhesion..
