US4340342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for processing elastomeric materials
Assignee: Geon Co
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Filing: 1981-01-16
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Granted: 1982-07-20
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Expires: 2001-01-16
Abstract
Abstract The processing of thermoplastic materials by working the thermoplastic materials into a hot flat sheet. The sheet material is first deformed or scored into a series of parallel strands that are interconnected by thin ribbons of the thermoplastic material thereby retaining integrity of the sheet material. The sheet material is then severed along the score line of the thin ribbons to form parallel strands which are cooled and guided to a fly cutter which cubes the strand material.
Inventors
- 👤 Heung T. Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:57
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/02; B29C53/04; B29C53/06; B26; B26D; B26D1/00; B26D1/01; B26D1/12; B26D1/25; B26D1/34; B26D1/38; B26D9/00; B29B; B29B9/00; B29B9/02; B29B9/04; B29C37/00; B29C37/0053; B29C37/0057
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
131 words
An apparatus for the cubing of thermoplastic materials having support means, a pair of rolls mounted on said support means, one of said rolls having a plurality of spaced formers cooperative with said other roll to form an undulating sheet having parallel strands interconnected by laterally extending and longitudinally extending thin web portions from a uniform thickness sheet of hot material passing therebetween, slitting means mounted on said support means and cooperative with said one roll to slit said undulating shapes along said longitudinally extending web portions into longitudinally extending strands, a cube cutter means mounted downstream of said pair of rolls for cutting said laterally extending webs of said plural strands into individual cubes, and cooling means mounted between said cube cutter and said slitting means for cooling said strands.
Claim 2
Independent Claim
131 words
An apparatus for the cubing of thermoplastic materials having support means, a pair of rolls mounted on said support means, one of said rolls having a plurality of spaced formers cooperative with said other roll to form an undulating sheet having parallel strands interconnected by laterally extending and longitudinally extending thin web portions from a uniform thickness sheet of hot material passing therebetween, slitting means mounted on said support means and cooperative with said one roll to slit said undulating shapes along said longitudinally extending web portions into longitudinally extending strands, a cube cutter means mounted downstream of said pair of rolls for cutting said laterally extending webs of said plural strands into individual cubes, and cooling means mounted between said cube cutter and said slitting means for cooling said strands.
Claim 3
Dependent Claim
47 words
An apparatus for cubing as set forth in claim 1 wherein said spaced formers comprise a plurality of axially spaced cylindrical cutting discs with clearance space therebetween, and a plurality of laterally spaced guides extending into said clearance spaces to facilitate the forming of said undulating sheet.
Claim 4
Dependent Claim
52 words
An apparatus for cubing as set forth in claim 2 wherein said one roller has a diverter cooperative therewith to facilitate said guiding of strand material from said slitting means toward said cube cutter means, and wherein take up rolls feed said strands from said slitting means to said cube cutter means.
Claim 5
Dependent Claim
58 words
An apparatus for cubing as set forth in claim 3 wherein said cooling means includes a diverter having a plurality of jet openings therein for directing a plurality of air jets downwardly onto said strands as said strands are directed to said take up rolls, and means for supplying cooling air to said jet openings for flow therethrough.
Claim 6
Independent Claim
225 words
An apparatus for the cubing of thermoplastic materials having support means, milling means mounted on said support means for masticating thermoplastic material into a hot thin sheet, a pair of rolls mounted on said support means, one of said rolls having a plurality of spaced formers cooperative with said other one of said rolls to form an undulating sheet having parallel strands interconnected by laterally extending and longitudinally extending web portions, said formers comprise a plurality of axially spaced cylinders with grooves therein, said cylinders having a small clearance space between adjacent cylinders, a plurality of laterally spaced filler members projecting into said clearance spaces between said adjacent cylinders, a slitting means having a plurality of laterally spaced knives cooperative with said one roll to slit said undulating material along said longitudinally extending web portions to form individual strands, a cube cutter means mounted downstream of said slitting means for cutting said strands along said laterally spaced webs into cubes, cooling means mounted between said cube cutter means and said slitting means for cooling said strands, said cooling means comprises a diverter located above said slitter for directing said parallel strands to said slitting means, said diverter having a plurality of jet openings therein for directing coolant downward onto said strands of material as it passes from said slitting means to said cube cutter means.
Claim 7
Independent Claim
225 words
An apparatus for the cubing of thermoplastic materials having support means, milling means mounted on said support means for masticating thermoplastic material into a hot thin sheet, a pair of rolls mounted on said support means, one of said rolls having a plurality of spaced formers cooperative with said other one of said rolls to form an undulating sheet having parallel strands interconnected by laterally extending and longitudinally extending web portions, said formers comprise a plurality of axially spaced cylinders with grooves therein, said cylinders having a small clearance space between adjacent cylinders, a plurality of laterally spaced filler members projecting into said clearance spaces between said adjacent cylinders, a slitting means having a plurality of laterally spaced knives cooperative with said one roll to slit said undulating material along said longitudinally extending web portions to form individual strands, a cube cutter means mounted downstream of said slitting means for cutting said strands along said laterally spaced webs into cubes, cooling means mounted between said cube cutter means and said slitting means for cooling said strands, said cooling means comprises a diverter located above said slitter for directing said parallel strands to said slitting means, said diverter having a plurality of jet openings therein for directing coolant downward onto said strands of material as it passes from said slitting means to said cube cutter means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-19 | 1986-01-18 | 1986-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-19 | 1990-01-18 | 1990-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-19 | 1994-01-18 | 1994-07-20 | $7700.00 | Window Closed / Lapsed |