Patent US3632282A successfully refreshed from Google Patents.
US3632282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing filamentary or sheetlike material of plural components
Assignee: Individual
•
Filing: 1969-12-09
•
Granted: 1972-01-04
•
Expires: 1989-12-09
Abstract
Abstract An extrusion apparatus for producing synthetic sheet material in which a plurality of extrudable synthetic materials are extruded as interspersed streams through alternating groups of extrusion orifices arranged in a row and collected into a coherent assembly within a collecting chamber having an outlet orifice slot therein for removal of the thus formed coherent assembly, combing means being provided to draw out threads of the materials from the interspersed streams thereof on at least certain surfaces of the coherent assembly. Preferably an array of spaced-apart wedgeshaped elements are arranged in gridlike manner between the row of orifices and the collecting chamber and a relative movement generally transverse to the extrusion direction is imparted to such an array in order to subdivide the interspersed streams into thin lamellae of the extrudable materials. One ore more of the edges of such wedge-shaped elements can be serrated in order to draw out threads from the lamellae passing in contact therewith and the relative movement of the array serves to interconnect the thus drawn out threads and bond the lamellae together.
Inventors
- 👤 Ole-Bendt Rasmussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:27
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/253; D01D5/42; D01D5/423; D04; D04H; D04H13/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
149 words
An apparatus for the manufacture of a synthetic sheet material by extrusion comprising a multiplicity of extrusion orifices arranged in a row, means for supplying a first extrudable material to a first set of said orifices, means for supplying a second extrudable material to a second set of said orifices alternating with the first set of orifices, a collecting chamber for combining interspersed streams of said materials extruded through said orifices into a coherent assembly of a multiplicity of lamellae extending through a substantial extent of the thickness of said assembly, said collecting chamber including an outlet slot generally coextensive in length with said row of orifices for removing said coherent assembly from said chamber, and combing means contacting the extrudable materials after extrusion from said orifices but before removal of the coherent assembly from the chamber for drawing out threads from said lamellae to bond said lamellae together.
Claim 2
Independent Claim
149 words
An apparatus for the manufacture of a synthetic sheet material by extrusion comprising a multiplicity of extrusion orifices arranged in a row, means for supplying a first extrudable material to a first set of said orifices, means for supplying a second extrudable material to a second set of said orifices alternating with the first set of orifices, a collecting chamber for combining interspersed streams of said materials extruded through said orifices into a coherent assembly of a multiplicity of lamellae extending through a substantial extent of the thickness of said assembly, said collecting chamber including an outlet slot generally coextensive in length with said row of orifices for removing said coherent assembly from said chamber, and combing means contacting the extrudable materials after extrusion from said orifices but before removal of the coherent assembly from the chamber for drawing out threads from said lamellae to bond said lamellae together.
Claim 3
Dependent Claim
58 words
The apparatus of claim 1 including an array of wedge-shaped elements disposed in spaced-apart relation generally transversely of the extrusion direction intermediate said row of orificEs and said collecting chamber with the apexes of said elements lying nearest said orifices, each of said wedge-shaped elements having at least one edge thereof serrated to act as said combing means.
Claim 4
Dependent Claim
14 words
The apparatus of claim 2 wherein the apex of each wedge-shaped element is serrated.
Claim 5
Dependent Claim
20 words
The apparatus of claim 2 wherein the mutually facing edges of each adjacent pair of said wedge-shaped elements are serrated.
Claim 6
Dependent Claim
23 words
The apparatus of claim 2 wherein said wedge-shaped elements are diamond- or double-wedge-shaped and the edges thereof remote from said orifices is serrated.
Claim 7
Dependent Claim
49 words
The apparatus of claim 2 wherein said array of wedge-shaped elements is mounted for movement in a direction generally transverse of the extrusion direction relative to said row of extrusion orifices and said collecting chamber and including means for imparting relative movement to said array in said transverse direction.
Claim 8
Dependent Claim
28 words
The apparatus of claim 1 wherein said collecting chamber includes on at least one side thereof a row of teeth adjacent and parallel to the outlet slot therefrom.
Claim 9
Dependent Claim
21 words
The apparatus of claim 7 wherein said outlet slot is formed with a restriction therein downstream of said row of teeth.
Claim 10
Dependent Claim
45 words
The apparatus of claim 7 wherein said collecting chamber is mounted for movement in a direction generally transverse of the extrusion direction relative to the row of extrusion orifices and including means for imparting said relative movement to said collecting chamber in said transverse direction.
Claim 11
Dependent Claim
46 words
The apparatus of claim 1 including a row of closely spaced reciprocable needles arranged generally parallel to the row of orifices and adapted to penetrate said interspersed streams of extrudable materials in a direction generally parallel to the extrusion direction and means for reciprocating said needles.
References Cited (Backward Citations)
US2573050A
Cited
US3511742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |