in generally this gate used in thin and flat requirement, like flat mobile phone cap, ipod cap and others. but sometimes this gate is not likely going to have a flat flow front, the make flow material more stable and flat, make temperature molds more higher than usual, but cycle time will also higher.
here is film gate from top view
Dimension
recommended dimension is approximately 0.2 mm to 0.6 mm in thick, the land area (parallel runner) is also be kept small approximately 0.6 mm - 1 mm depend the large and weight of product.
Other Design
picture below shown other design of film gate, with more reliable and easy in process.
look the different model of film gate, and different design of parallel runner.
picture below shown simulation of plastic flow from those design
and the last picture shown time that needed to cooling the melt plastic in mold
from the picture above we can choose the right place to make cooling pipe, the red color marks mean need more time to cool the product.
3 comments:
It is a very informative and useful post thanks it is good material to read this post increases my knowledge. Plastic Moulding
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