design a right draft for your plastic part
as for draft, actually different parts have different requirement, a tall or larger plastic part design has a smaller draft, for a special need or higher precision requirement, […]
why some plastic parts are scratched?
during ejection, why some plastic parts are scratched? In order to answer this question, I need to introduce Draft to you. […]
design a support surface for a plastic part
today you ask me some thing about support surface, ok! Let me tell you some, when we need to design a support surface for a plastic part, […]
how to arrange these ribs
thank you for your suggestions, now I want to tell you how to arrange these ribs: […]
how to add ribs to a plastic part design
but how to add ribs to a plastic part design, maybe there are something need to be considered: […]
please don’t forget ribs
hey! Every one, please don’t forget ribs, sometimes, in order to enhance the plastic part strength and stiffness, and it is impossible to increase the wall thickness of the part, what to do? Yes! ribs could help and also ribs could improve material flow conditions during molding.
the thickness of plastic part can help mold designer
sometimes, the thickness can help us to probably locate the welding mark, for example, in order to avoid leaving welding marks in the top areas. We should increase the thickness of the top areas to a reasonable value.
the homogeneous thickness around the part is very important
during the solidification and cooling process, uneven shrinkage is bad for plastic part, such as residual forces and defects and so on. So the homogeneous thickness around the part is very important.
about thermoplastic material
I want to say something about thermoplastic material when you meet thickness problem, actually thermoplastic materials are good for parts with a thin wall. The value we often use is from 1.5 mm to 4 mm. though it could be as thin as 0.6 – 0.9mm, or even 0.25 mm at time.
more details about the thickness of plastic part
before deciding a certain thickness, you need to balance something like economics, and part quality and strength, these contain the material type, part size, and molding conditions and so on.