Polyolefins are relatively easy to extrude
, but as you go up in performance in terms of high-temperature requirements, the materials get more and more difficult to extrude
," says Dr.
Apart from being able to extrude
a diversity of compounds at higher outputs and better quality, the Transfermix extruders are also extremely compact in size.
One of the three is a Spanish injection molder that uses industrial scrap from five- and seven-layer barrier packaging film (containing PET, EVA, and LDPE) plus PET bottle flake to extrude
monofilament for brush bristles.
RPC Bebo Plastik in Bremervoerde, Germany, extrudes
its own proprietary sheet for thermoformed food containers and is making five- and seven-layer PP barrier sheet with an oxygen scavenger called Shelfplus02.
Polywood also extrudes
dock pilings using a water jacket to freeze the outside of the profile (to prevent warping) before it enters a water bath.
Their system extrudes
a thin embossed tape and inserts it into a small irrigation tube via a crosshead die.
The line extrudes
the bubble downward into a water bath, then orients it for clarity and specific tear properties so that the casing on the sausage can be cut and peeled without splitting.
Andersen first pelletizes the mix on a twin-screw compounder with a single-screw hot-melt extruder, then extrudes
the profiles on Cincinnati Milacron conical twins.
compounds and extrudes
mineral-filled elastomers into automotive carpet backing.
the polyketone tube, which bonds to the hose's TPU outer layer.
The company extrudes
convoluted tubing used to protect wiring in aircraft, buses, and trains.
This material blow molds and extrudes
easily, but is tough to injection mold--some who've tried compare it to "molding chewing gum"--and virtually impossible to rotomold.
Using water as a foaming agent, Storopack extrudes
a spongy double tube, then cuts it to 1-in.