PlasticsToday
PlasticsToday covers developments in injection molding, extrusion, thermoforming, blow molding, and other forms of plastics processing.
Resin Pricing recent news - Plastics Today
Oct 31, 2024 · Resin Pricing. Resin Pricing. Resin Price Report: Steep Declines Ahead for PP Contracts. PP contracts could drop an additional $0.06/lb in October, bringing the two-month decrease to $0.10/lb. by Staff.
Plastic Possibilities: Resin Pricing Outlook - Injection Molding …
Jul 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
Aug 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 ...
My customer wants me to submit to IMDS; what do I do now?
Mar 14, 2014 · There are two problems with this strategy: 1. Your suppliers are often smaller companies than yours, meaning they have even less flexibility to fulfill the IMDS requirement than you do. 2. Even if your suppliers completed their IMDS requirement, you still need to create a record for your product.
PolyOne Completes Clariant Buy, Changes Name to Avient
Jul 1, 2020 · Materials supplier PolyOne Corp. announced today that it has completed its purchase of the color masterbatch businesses of Clariant and Clariant Chemicals India Ltd. for $1.44 billion. PolyOne also announced that it has changed its name to Avient. "We proudly welcome our newest associates and valued customers from Clariant Masterbatch.
Snap-fit Design for Injection Molded Plastic Parts
Nov 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.
Medical Plastics 101: Cyclic Olefin Copolymer
Feb 2, 2021 · Cyclic olefin copolymer (COC) is a unique member of the polyolefin family, which also includes high-volume materials like polyethylene (PE) and polypropylene (PP). It was introduced a few decades ago and has become a widely used material in medical and packaging applications. The extremely high purity and unique properties of COC have made it ...
Extrusion Basics: The Taming of the Screw - Injection Molding …
Sep 19, 2021 · The screw is at the core of the extrusion process. This article summarizes how it works and details the importance of length-to-diameter ratio, channel depth, flight width, and other parameters. Planet Earth is spinning at a rate of 0.0007 rpm. Easy to calculate: One revolution per day, divided by 24 to get revs/hr and then by 60 to get revs ...
Thermoforming — The Surprising Vitality of a Mature Plastics …
Dec 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 ...