Die casting plastic packa

How often is the plastic covering?
The plastic encapsulation is actually a secondary ** molding process. The product generally includes a main (rubber) section and an outer (soft) section. During the manufacturing of the mold, the hard plastic main body is first manufactured, and the main hard plastic mold design is outsourced according to a normal design procedure. (Soft glue) mold design should be hard plastic products as a reference, no need to put water shrink, the rear mold part, the same with the hard plastic main body, the front mold is different from the plastic shape, in the production of the hard plastic body , And then put the hard plastic body into the outer mold, and outsourcing the soft plastic ** molding production.
Plastic features
1) Calculate the shrinkage of the main hard plastic part of the mold design
2) There are usually two independent sets of molds
3) After the soft mold, the mold part is the same as the hard glue of the main body, there is a small amount of space to **oid, and the glue part must use the main body of the hard glue to h**e no virtual position.It should be noted that the TPU material itself is more easily glued, if the product can do sand surface as much as possible, so easy to mold!TPU materials h**e a slower flow and a longer cooling cycle. As long as you pay attention to the production process, there will be no big problems!