ØA g6
ØA g6
ØB g6
ØB g6
ØA H7
M6
Dynamic Gas Venting System
CH3
ØF
Ø H
M6
SIMPLE SOLUTIONS FOR INTERNAL VENTING
EDGE
ONLY FOR SGDA-605F SGDA-607CF
+ 0.1 0
3.6
Insufficient venting is a common challenge and can be the source of major challenges in the molding process. Problems can be avoided with good mold design and the incorporation of specially designed engineered components and/or materials that enable the venting of the material. DME is the Industry leader in Venting Solutions and provides a wide selection of products to meet your specific application requirements in both small and large tooling. The Dynamic Gas Venting System can be installed with minimum machining and is designed to deliver a simple venting solution without the need to add any external vacuum. Better Part Quality with Greater Output Ideally suited for large part molding and corrosive enviromments where excessive gasses can be an issue. Incorporating the DME venting products into your tool can save a headache during the molding process. Three of the most common plastic part defects caused by gas and air are Burn Marks, Short Shots and Knitlines. Stop scrapping parts and save unnecessary down time. F or assistance selecting the proper vent for your application email DME_Mech_Eng@dme.net include the part’s CAD STEP file and resin specifications.
Top Side
Defect
Burn Mark
Good
Defect
Knitlines A knitline is where molten polymer flow fronts meet in the cavity. Incomplete adhesion occurs along a knitline and causes a weak point in the plastic part
Short Shots Missing plastic or features that are not fully formed. Missing corners or features have a smooth or rounded appearance.
Burn Marks Discoloration - usually black, brown or dark yellow/brown depending on severity. Feels rough and crunchy. Frequently accompanied by short shot in burn area
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U.S. 800-626-6653 ■ Canada 800-387-6600 ■ Mexico 52-442-713-5666 ■ dme.net ■ store.dme.net
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