Xaloy technology minimizes pre-drying
Processors can eliminate or reduce costly pre-drying using standard injection machines, thanks to a vented barrel and screw package from Xaloy Inc. of Pulaski, Va.
Xaloy offers the technology as a retrofit kit for conversion of existing machines with standard screw length-to-diameter ratios of 20-to-1, or as an option on new equipment. Molders can avoid the extra cost and space requirements of longer, 25-1 length-to-diameter-ratio vented machines.
Unlike some vented machines, it does not require a metering device to control resin feeding, the company said.
The screw design has two stages separated by a vent zone, like other vented screws. The main difference is that its geometry avoids vent flooding by balancing throughput from the first stage to the second.
Material is prevented from escaping through the vent by screw geometry and the zero-pressure condition of the melt.
Tel. (540) 980-7560, fax (540) 980-5670.
PTI touts leak tester for PVC, HDPE bottles
Tuckahoe, N.Y.-based Packaging Technologies & Inspection said it is making the fastest Wilco leak tester ever made, for use with PVC and high density polyethylene bottles.
The Wilcomat W03-HSM can test as many as 6,000 bottles an hour. Defective containers are rejected from the production line. The high-speed equipment can test containers from 2 ounces to 1 gallon.
The device, which is on wheels, quickly can be changed over to other bottle sizes without tools. It handles round and rectangular bottles.
PTI also introduced the Wilcomat WFX-100, a semiautomatic machine that tests for leaks in two to three seconds.
Tel. (914) 337-2005, fax (914) 337-8519, e-mail [email protected] com.
DMT reveals system for PET film pinning
DMT SA, which makes biaxially oriented film production equipment, has introduced a new pinning system for oriented-PET stretch film lines.
The system uses a thin metallic band instead of the traditional wire-based designs. A circulating high-voltage current pins the melt to the chill roll. The system maintains a constant distance between the source of an electrostatic field and the chill roll.
DMT, based in le Bourget-du-Lac, France, said the DMT system retrofitted onto an existing PET film line can make the machine run as much as 40 percent faster, with improved mechanical and optical properties.
DMT said the electrostatic system also can be used on polyethylene naphthalate, polyvinylidene fluoride and polytetrafluoroethylene.
Tel. +33 (4) 79 26 1000, fax +33 (4) 79 25 2327.