PlasticsToday
网页PlasticsToday Events. The transformation encompasses the current slate of Informa Markets Engineering advanced manufacturing events. PlasticsToday covers developments in injection molding, extrusion, thermoforming, blow molding, and other forms of …
Resin Pricing recent news - Plastics Today
网页Resin 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.
Snap-fit Design for Injection Molded Plastic Parts
网页2019年11月15日 · 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.
First time correct, Part 2: Machine, method, material, man
网页2009年7月31日 · Part 2 offers more details on some of these, broken down again by the four main categories: machine, method, material, and man.MACHINEMolding machines. Mike Miller. July 31, 2009. 14 Min Read. Part 1 of this two-part series introduced a fishbone diagram showing many of the parameters requiring control to successfully make injection …
The Materials Analyst, Part 30: How usable is your regrind?
网页2000年2月29日 · Michael Sepe is our analyst and author. He is the technical director at Dickten & Masch Mfg., a molder of thermoset and thermoplastic materials in Nashotah, WI. Mike has provided analytical services to material suppliers, molders, and end users for the last 12 years. He can be reached at (414) 369-5555, ext. 572.
About the Author - Injection Molding Magazine
网页2016年8月13日 · 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 ...
Extrusion basics: How to choose screens - Injection Molding …
网页2015年7月16日 · 3 Min Read. Choosing appropriate screens for an extrusion process involves striking a balance between filtration needs (removing more contaminants) and overheating. Finer screens get more contaminants out, but they also raise back-pressure in the extruder, which requires more power from the motor and, thus, creates more frictional …
The Troubleshooter: Setting Up Your Injection Molding Process for …
网页2024年5月2日 · Pressure is also one of the primary factors in a plastic injection process. Hold pressure is a key setpoint, and peak pressure is a key process monitoring variable. If the pressure is too high, it can lead to flash, overpacking, and voids. Pressure that is too low can cause shorts, sinks, and other under pack conditions.
It’s Microplastics All the Way Down - plasticstoday.com
网页2024年6月24日 · The role of intentionality. Microplastics are often broken down into two categories — primary and secondary. Primary microplastics are plastics that start out as microplastics, such as the microbeads added to many cosmetic products. They are intentionally made as microplastics. In contrast, secondary microplastics start out as …
The Materials Analyst, Part 23:Stress cracking: How to avoid this ...
网页1999年8月14日 · 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.