Nova Patents
NO952998L

Method and apparatus for applying a heatable composition

Abstract

An extrudable material (1) e.g. a hot melt adhesive, a substrate (2) is applied while simultaneously irradiating with a laser beam (9). The laser energy is absorbed by the adhesive and the substrate, thereby spreading the adhesive into the fabric. When a gap (17) is applied between two substrate plates, the extrudable material forms a very strong bond. When one of the substrate materials (21) is porous, the extrudable material will penetrate the material thickness and come into contact with a lower layer (19) to form a connection. The extrudable material is applied through a nozzle and the laser beam is directed through the nozzle so that it is coaxial with the flow path (11) of the extrudable material. The coaxial arrangement facilitates movement of the nozzle and beam in complicated patterns and ensures simultaneous application of the extrudable material and the laser beam.

Term

No projected expiry on record.

  1. Priority
  2. Filed
  3. Published
  4. Today

4 paragraphs, as filed

(21) Application No. 952998 (22) Starting day 28.07.95 (24) Running day 28.01.94 (41) Aim. avail. 28.09.95 (86) Int. Entry date and application number 28.01.94, PCT / US94 / 00599 (85) Continuation day 28.07.95 (30) Priority 29.01.93, US, 10859 (71/73) Applicant / Holder (72 ) Inventor (74) Agent

AST Holdings Ltd, 19000 West Highway 72, Golden, CO 80403, US

Craig A. Neff, Golden, CO, US

Pål Gulbrandsen, Bryn &amp; Aarflot AS, Oslo (54) Designation Method and apparatus for applying a heatable composition (57) Summary <sub>E</sub>t extrudable material (1) e.g. a hot melt adhesive, a substrate (2) is applied under simultaneous irradiation with a laser beam (9). The laser energy is absorbed by the adhesive and the substrate, thereby spreading the adhesive into the fabric. When a gap (17) is applied between two substrate plates, the extrudable material forms a very strong bond. When one of the substrate materials (21) is porous, the extrudable material will penetrate through the material thickness and come into contact with a lower layer (19) to thereby form a compound. The extrudable material is applied through a nozzle and the laser beam is directed through the nozzle so that it is coaxial with the flow path (11) of the extrudable material. The coaxial arrangement facilitates movement of the nozzle and the beam in complicated patterns and ensures simultaneous application of the extrudable material and the laser beam.