Printer Friendly

New ink dispensers help laser Weld Clear parts. (Keeping Up With Auxiliaries).

Laser welding of translucent parts is now feasible, thanks to a new laser-absorbent ink and specialized ink-dispensing systems from two suppliers working in partnership with the ink developer. ClearWeld, a process developed by Gentex Corp. in Carbondale, Pa., requires precise deposition of inks formulated to absorb near-infrared (NIR) laser light. Previously, laser welding required one part to be infrared-absorbing, limiting it to only black or dark-colored parts. With ClearWeld, the laser passes through the clear plastic, but stops at the joint, where it is absorbed by the ink and generates enough heat to create a weld.

The ink-dispensing equipment suppliers are Nordson Corp. of Duluth, Ga., and Xennia of Royston, Hertfordshire, U.K. They have developed, respectively, a liquid spraying system and an ink-jet printer for accurate application of Gentex's inks. "They open the way for implementing our technology," declares LP Frieder III, marketing manager at Gentex.

Nordson's Product Assembly Group offers a ClearWeld package consisting of a spray apparatus, tips, and syringes. Nordson also supplies robots and 3D motion-control tables required for precise product placement, ink dispensing, and laser manipulation in low- to medium-volume operations. For high-volume welding, Nordson offers customized tabletop work cells.

Meanwhile, Xennia's XPS 9000 industrial inkjet system is specially designed to dispense Gentex's NIR-absorbing inks. An integrated IR lamp ensures efficient ink drying after deposition. Nordson: (800) 683-2314, / productassembly; Xennia: +44 1763 24 6600,
COPYRIGHT 2002 Gardner Publications, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2002, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

Article Details
Printer friendly Cite/link Email Feedback
Comment:New ink dispensers help laser Weld Clear parts. (Keeping Up With Auxiliaries).
Publication:Plastics Technology
Article Type:Brief Article
Geographic Code:1USA
Date:Aug 1, 2002
Previous Article:Ultrasonic welder works in multiple modes. (Keeping Up With Auxiliaries).
Next Article:Optical sorter for bottle recycling. (Keeping up with Auxiliaries).

Related Articles
Plastics welding technology joins 'world-class' manufacturing.
Lost-core molding: don't count it out yet.
Welding and assembly systems.
At Polymer Conversions Inc.: a controlled environment is critical to quality.
Melt oscillation molds better parts.
Laser Marking Has a Bright Future in Plastics.
Get to know lasers and their roles in plastics.
Welding, bonding & assembly. (What to See at NPE 2003).

Terms of use | Privacy policy | Copyright © 2019 Farlex, Inc. | Feedback | For webmasters