A new constant-shear manifold for film and sheet balances the flow of virtually any polymer or blend, regardless of viscosity, for dies up to 36 in. wide, according to Premier Dies Corp., Chippewa Falls, Wis.
The first extruder in this country to have the new eight-screw devolatilizing section from Gneuss, Inc., Matthews, N.C., was delivered last September to a processor in Florida.
Plaskolite Inc., Columbus, Ohio, is now offering thermoformable sheet of Eastman Chemical’s new proprietary Tritan copolyester for signage.
Compression Roll Drawing (CRD), a patented machine-direction orientation (MDO) technique used for years to make tough plastic strapping, can add cold impact strength to PP sheet as well.
A novel thermoforming process developed by LRM Industrial LLC, Rockledge, Fla., a joint venture of Nova Chemicals and Envirokare Tech Inc., makes large parts in one step without roll stock or cut sheet.
A five-layer cast and blown film line for lab or small-scale production was recently built by Macro Engineering & Technology Inc., Mississauga, Ont.
Plastic Flow LLC, Houghton, Mich., a spin-off from Michigan Tech University, released polyXtrue software last summer to simulate monolayer die flow.
A six-roll stack custom-built late last year by Taylor’s HPM in Mt.
Until now, visual surface inspection for doctor-blade stripes or other coating defects on sheet or film had to be performed at the end of the line after the coating had cooled or dried and was no longer shiny, reflecting too much light to be easily ...