Argotec, Huntsman craft PU foam sheet
Argotec Inc. is offering a new foamed, thermoplastic polyurethane sheet for specialty applications.
The film extruder developed the sheet in conjunction with Huntsman Polyurethanes, which supplies special grades of Irolite TPU resin to Argotec of Greenfield, Mass. The new Irolite grades allow lighter-weight, stronger sheet than standard TPU resins, the firms claim.
Argotec said its sheet is highly resistant to abrasion, temperature and chemicals and its closed-cell structure suits it to marine and flotation applications and liquid barriers. Good compression set suggests seating uses. Available in sheet up to 60 inches wide and in thicknesses of 30-80 mils, the product represents a new form of foamed TPU for engineers and designers, Argotec said.
Tel. (413) 772-2564, fax (413) 772-2565, e-mail customerservice @argotecinc.com.
Lead-free stabilizers target wire & cable
Ferro Corp. debuted two nonlead, mixed-metal heat stabilizers for wire and cable applications.
Designed as environmentally friendly alternatives, the products also can reduce formulation costs on a volume basis, the firm's Polymer Additives Division claims. Therm-Chek RC376P and Therm-Chek RC377P are calcium-zinc powder stabilizers that replace lead sulfate on a part-for-part basis, according to the Independence, Ohio-based unit.
The new addditives offer wider processing windows in most general-purpose extrusion uses. As well, their specific gravities are less than a third that of lead sulfate, providing a lower cost per unit volume. While Therm-Chek RC376P has color-hold properties equal to or better than lead sulfate, RC377P is a lower-cost product suited for uses where color hold is not critical.
Tel. (216) 641-8580, fax (216) 750-1416.
THK America makes damping ball screw
THK America Inc. has developed a damping ball screw, which incorporates a vibration damper inside the hollow ball screw shaft.
THK of Schaumburg, Ill., supplies ball screws and linear motion guides to plastics machinery manufacturers. Ball screws are used in all-electric injection molding machines.
Advantages of the damping ball screw include improved positioning accuracy, low noise and higher speed capability. In a test study using an impulse hammer, the THK damping ball screw performed with less vibration time than a conventional ball screw.
THK also has introduced an extra-large line of its linear motion guides and ball screws. The Type SNS300 linear guide is the company's largest with its Caged Ball technology. The Heavy Load Ball Screw, Type HBN, has an extremely large load capacity.
THK showed the products at the International Manufacturing Technology Show, held Sept. 8-15 in Chicago.
Tel. (800) 763-5459 or (847) 310-1111, fax (847) 310-1182, e-mail [email protected]
Kurz taking new foils for plastic to K show
Leonhard Kurz GmbH & Co. KG has expanded its range of brushed and metalized foils for decorating plastic surfaces.
The new wrapping foil is designed to wrap profiles with cross-section dimensions that do not allow coating with hot-stamping foil. Instead of being stamped, the wrapping foil is applied using hot-melt adhesives.
Kurz said processors can use all commonly available wrapping and laminating machines to apply the decoration.
The colors and structure effects are the same as those found on Kurz's existing line of hot-stamping and laminating foils.
Kurz also has developed a brushed-look hot-stamping foil with a high level of surface durability.
In other news, the company in Fuerth, Germany, recently developed a process to produce partially metalized heat transfers using silk-screen printing, instead of the more traditional rotogravure printing. Silk screening means Kurz offers customers economical designs with metalized features, even in small batches.
For cosmetics packaging, Kurz has extended its line to include metalized hot-stamping foils in matte colors. The standard line now includes shiny, silver-colored and matt foils, all developed specifically for plastic surfaces.
At K 2004 in October, Kurz will demonstrate the combined application of in-mold decoration and hot stamping for the first time. An automated work cell will mold a cellular-phone lens, then decorate the part on a vertical PE-5000 stamping machine.
Tel. +49 (911) 71-410, fax +49 (911) 71-41357.
Guill Tool upgrades die for plastic wood
Guill Tool & Engineering Co. Inc. introduced its EquaFlow II, the second generation of its tooling that allows the simultaneous extrusion of plastic and wood composites.
Guill Tool said the die offers improved accuracy and a more-consistent product flow. Material distribution and consistency are enhanced by a specially designed, combined die and reservoir system, which the company said is a first in the industry.
Guill is based in West Warwick, R.I.
Tel. (401) 828-7600, fax (401) 823-5310, e-mail [email protected]
Thai company offers lab machines in U.S.
Labtech Engineering Co. Ltd., of Bangkok, Thailand, has introduced to the U.S. market a line of laboratory machines for making blown and cast film and sheet and for compounding.
Labtech offers single-screw extruders in screw diameters of 20, 25 and 30 millimeters, all with length-to-diameter ratios of 30-1.
Twin-screw extruders have a split barrel and come in 16-, 20- and 26-millimeter sizes, with length-to-diameter ratios of 32-1 and 40-1. Twin-screw units also are available with side feeders.
Downstream equipment includes pelletizers and take-offs for film.
Quick changeovers come from split clamps between the extruder and die and the downstream equipment, which is mounted on casters.
Options include a melt pump and dies to make blown and cast film with as many as five layers.
Labtech's product line also includes two-roll mills for plastics and rubber, hydraulic presses and mixers.
The company was established in 1982 in Thailand.
XtruTec Engineering/A.W. Enterprises of Denville, N.J., represents Labtech Engineering in the United States.
Tel. (800) 294-5701 or (973) 627-6201, fax (973) 627-6398, e-mail [email protected]
Nylon sheet stock can be thermformed
Ensinger/Penn Fibre has added thermoformable nylon sheet to its expanded range of stock products.
The company claims its offering is the first commercially available thermoformable nylon sheet. Pennite 4508 is a 15 percent glass-reinforced nylon 6 that is heat-stabilized and impact-modified.
Emerging applications such as automotive air dams and radiator shrouds have boosted demand to the point where Ensinger/Penn Fibre decided to make the sheet a stock offering in thicknesses up to 0.25 inch. Standard dimensions go up to 48 inches by 96 inches.
The Bensalem, Pa., company added two other stock sheets to inventory.
Polyvinylidene difluoride sheet in thicknesses of 0.031-0.25 inch now is available off the shelf. The standard sheets come in 24-inch-by-48-inch sizes. Optional fabric backings are available. Also in stock is PVDF welding rod.
Ensinger/Penn Fibre has added Ultem 1000 natural polyetherimide sheet in 24-inch-by-48-inch sizes to stock. Standard thicknesses are 0.04-0.125 inch. The sheet is based on GE Plastics' Ultem polymers.
Tel. (800) 662-7366, fax (215) 702-9552, e-mail [email protected]