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US3773586A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of processing synthetic plastic materials for subsequent extrusion and regeneration

Assignee: Individual
•
Filing: 1971-03-04
•
Granted: 1973-11-20
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Expires: 1991-03-04
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Abstract

Abstract A method of treating foil webs and strips of synthetic material preparatory to feeding the same to an extruder for regeneration, according to which the foil web or strip is in a continuous manner wound upon a grate roller and with increasing thickness on said roller is, while being subjected to pressure from the outside, cut into individual sections while simultaneously said layers are at their cut edges fused to each other layer by layer, said layers being pressed through between the grate bars of said grate roller into the interior of said grate roller, thereby to form strands and the thus formed strands being withdrawn by conveying means and cut into multi-layer pieces and being subsequently conveyed to a supply station or station for further processing the thus obtained material.

Inventors

  • 👤 H Koch
  • 👤 H Staneck

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 22:50
CPC Classifications
B; B29; B29B; B29B17/00; B29B17/0026; B29B17/0042; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 110 words
A method of processing of synthetic plastic materials to prepare the same for subsequent extrusion for recycling and regeneration into new foil webs and foil strips of synthetic material, which includes the steps of: winding the material to be processed in a continuous manner into a multi-layer coil of increasing magnitude, cutting the superimposed coils into strips to form strands having cut edges by use of a heated separating means and fusing them under pressure layer for layer to each other at the cut Edges, cutting the thus formed strands into multi-layer pieces, and feeding the thus cut pieces into conveying means for conveying the material to a desired station.
Claim 2
Independent Claim 110 words
A method of processing of synthetic plastic materials to prepare the same for subsequent extrusion for recycling and regeneration into new foil webs and foil strips of synthetic material, which includes the steps of: winding the material to be processed in a continuous manner into a multi-layer coil of increasing magnitude, cutting the superimposed coils into strips to form strands having cut edges by use of a heated separating means and fusing them under pressure layer for layer to each other at the cut Edges, cutting the thus formed strands into multi-layer pieces, and feeding the thus cut pieces into conveying means for conveying the material to a desired station.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-11-19 1977-05-21 1977-11-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-11-19 1981-05-21 1981-11-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-11-19 1985-05-21 1985-11-20 $7700.00 Window Closed / Lapsed

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