Apparatus and method for inflation extrusion molding of pressure-sensitive adhesive sheet
US8092204B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2010 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Jul 8, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2793/0063
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides an apparatus for inflation extrusion molding of pressure-sensitive adhesive sheet, the apparatus including: one or a plurality of extruders; a die into which one or a plurality of resin materials including at least a resin material for forming a pressure-sensitive adhesive layer and extruded respectively from the extruders are respectively introduced and which extrudes from an ejection opening the resin materials into an inflated cylindrical shape having a predetermined diameter in accordance with an inflation method; and two stabilizers facing each other at a predetermined angle so as to upwardly approach each other, and defining a space therebetween through which the cylindrically-shaped resin materials extruded from the die are passed to be deformed into a pressure-sensitive adhesive sheet in a flattened elliptical shape having a predetermined width, in which the stabilizers each have a plurality of air floating portions each of which blows air toward the resin materials; and the stabilizers rotate in one direction around the central axis of the cylindrically-shaped resin materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.