Apparatus for continuous extrusion of a multilayer synthetic resin web
US4695236A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1985 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Feb 14, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/495
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The apparatus for continuous extrusion of a plastic laminate has at least two extrusion screw presses, an accumulator block, a transition unit, and an output die, from which the plastic laminate product is extruded. The accumulator block has a combining channel or canal therein which is fed by the extrusion screw presses. This combining canal is connected by way of the transition unit to the output die. The combining canal preferably has a rectangular cross section with rounded corners and at its upstream end is directly connected to a first extrusion screw press by way of a connecting canal coaxial with the combining canal. Downstreamwards below the connecting canal is found at least one input metering slot connected to the combining canal at one end and through a connecting apparatus at its other end to an additional extrusion screw press, this input metering slot lying between an input plate and an adjusting bar guided in an adjusting bar recess. The input metering slot extends over a rectangular side of the rectangular cross section combining canal, is directed slantingly downstreamwards, and opens into the combining canal. The adjusting bar has an adjustable beveled portion fi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.