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Opening mold action of various molds2011-11-9 15:46:53
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The main technical parameters of the extrusion mold2011-9-23 11:17:24
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Good Reasons to Make a Short Shot, And How to Do It Right2010-3-4 13:49:44
Making a proper short shot is an important aspect of practicing “scientific molding.” Upon startup of almost any mold, the first step is to make a short shot. Why? The list of reasons is longer than you might think: For your own safety. To prevent damage to the mold from overpacking if you set shot size incorrectly. To confirm that the cutoff or switchover position from firs
The Whys & Hows (& Ifs) of Vented Extruders2010-1-13 8:54:15
Vented or two-stage screws only make sense when volatiles must be removed in order to make a satisfactory product. These screws have a number of disadvantages that are offset only if volatile removal is essential to proper operation. First and foremost is the problem of vent leakage. Second is a loss of output due to the need to design the screw to accommodate an open vent. Third, there is always
Multi-Shot Tooling Approaches Eliminate Part Welding2010-1-12 8:49:39
Three new multi-shot tooling concepts that involve stationary cavities and indexing cores use injection overmolding to eliminate post-mold welding operations and improve part quality and productivity while reducing scrap. One approach brings part assembly into the press. Another produces thick-wall parts in less time by building up the part in the mold from successive layers of material. And a thi
Why Aluminum Tooling Makes Sense For High-Volume Automotive Parts2010-1-11 10:14:27
There’s increasing interest in the benefits of aluminum tooling for higher volume injection molded applications, especially in automotive. Our firm has been involved with aluminum tooling for prototype and production applications since the early 1990s, and more recently we began to apply that knowledge to the automotive industry.Just over five years ago, our company, and later some others, b
Mold Plaques Save Engineering Department Time/Money2009-12-25 9:20:19
Full-color mold plaques have been developed for the North American tooling and plastics industries that identify a mold or die’s parts quickly and easily—saving engineering time and money.The plaques—introduced by mold component supplier DMS (Oldcastle, ON) in conjunction with ICS Laser Technologies (Windsor, ON)—feature thermal set graphics. According to DMS North American

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