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WEBPlasticsToday Events. The transformation encompasses the current slate of Informa Markets Engineering advanced manufacturing events. PlasticsToday covers developments in injection molding, extrusion, thermoforming, …
Resin Pricing recent news - Plastics Today
WEBResin Pricing. Resin Pricing. Resin Price Report: Prices Drop Amid Relatively Mild Hurricane Season. PE commodity resins drop by as much as a penny, while PP resins are down one to two cents. by Staff. Sep 18, 2024.
Thermoforming — The Surprising Vitality of a Mature Plastics …
WEBDec 5, 2023 · A thermoforming primer. First, some basics: The process takes the form of either vacuum or pressure forming. In the former, a heated, pliable plastic sheet is pulled against the contours of the mold by vacuum pressure. “Since pressure is only applied to one side of the sheet,” explains Formed Plastics Inc., “vacuum forming is typically ...
Plastic Possibilities: Resin Pricing Outlook - Injection Molding …
WEBJul 22, 2022 · It’s not exactly breaking news that polyethylene terephthalate (PET) resin prices have been soaring, but buyers might find some relief in that market, as well. “It seems like PET prices have gone up all the time,” noted Pafford. “But we may have hit a peak there, [and prices] will slowly tamp down through the rest of this year.”.
About the Author - Injection Molding Magazine
WEBAug 13, 2016 · Three-zone principle. The screw starts with a feed zone: Constant depth, takes up 15 to 30% of length. In the middle is the compression zone, walls close in on the melt/pellet mix, drive air backward and make up for slipping and rolling of pellets in the feed zone. This zone contains the “barrier” of barrier screws: A long double-channel ...
Snap-fit Design for Injection Molded Plastic Parts
WEBNov 15, 2019 · The equilateral and half-round profiles enable snapping on or off two parts simply by pressing them together or pulling them apart. We will examine the design considerations associated with each of these snap options based on the previous list of parameters. Deflect within the strength limits of the plastic.
Heat-Staking Tech Solves Complex Plastics-Joining Applications
WEBOct 5, 2020 · This has led to an increase in challenging heat-staking applications involving parts with more complex 3D geometries, closely aligned features, and fragile or heat-sensitive components, such as soldered components or sensors. A greater number of blended, glass-reinforced, chromed, and metalized plastics also are being used.
Injection molding design: 10 critical quality design considerations
WEBAug 4, 2019 · 5. Gate location. Gate location ideally should be specified by a designer, molder and tool maker. Gate location is critical to virtually every attribute of an injection molded part. It affects appearance, warpage, tolerances, surface finish, wall thickness, molded in stresses and physical properties, to name a few.
The Materials Analyst, Part 23:Stress cracking: How to avoid this ...
WEBAug 14, 1999 · Once the stress is relieved by the initiation of the crack, the material does not undergo any further chemical attack. Two solutions were posed to this problem. The first option was to change to a filled polypropylene. Polypropylene is semicrystalline and therefore has much better chemical resistance than polystyrene.
Everything you ever wanted to know about extrusion
WEBJuly 10, 2017. 9 Min Read. You’ve got questions about extrusion, and Allan Griff has the answers. But what he didn’t have during a recent webinar on the key principles of extrusion hosted by PlasticsToday was time. Dozens of questions flooded in from attendees and he could only respond to a handful during the allotted time for the live Q&A.