US3873034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing synthetic pulp
Assignee: JNC Corp
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Filing: 1973-08-17
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Granted: 1975-03-25
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Expires: 1993-08-17
Abstract
Abstract An apparatus for fibrillating a synthetic resin film which includes a casing, at least two rotors in the casing, and a space between said rotors. A suitable apparatus for such fibrillation is presented. Synthetic pulp thus prepared provides a paper-like material having superior properties by blending it with e.g., wood pulp.
Inventors
- 👤 Eitaro Iwahori
- 👤 Mitsuo Kurita
- 👤 Mitsumasa Uno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:32
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
248 words
An apparatus for fibrillating synthetic resin film into synthetic pulp which comprises in combination: A. a cylindrical outer casing having a. an inlet on one side for supplying air and materials to be fibrillated, b. an outlet on the other side for discharging an air stream containing fibrillated materials, c. a plurality of linear projections disposed along the inner peripheral surface of said casing in an alignment which is substantially parallel to the center line of said casing, B. a rotary shaft extending centrally through said casing and which is capable of being revolved at high speed around the center line of said casing, C. at least two rotors affixed to said shaft a. each rotor comprising a disk fixed perpendicularly to said rotary shaft and a plurality of spaced apart vanes fixed to the outer periphery of said disk which extend radially outward to within a very short distance of the inner longitudinal edges of said plurality of linear projections, D. pairs of circular plates fixed to said rotary shaft in such a way that each of said pairs supports a rotor therebetween, E. means adjacent said inlet for sucking in air and the materials to be fibrillated and discharging the air stream containing the fibrillated materials, said means comprising a disk fixed perpendicularly to said rotary shaft, and having a plurality of vanes provided thereon, F. the circular plates of adjacent rotors being spaced apart so as to leave a substantially unobstructed space between adJacent rotors.
Claim 2
Independent Claim
248 words
An apparatus for fibrillating synthetic resin film into synthetic pulp which comprises in combination: A. a cylindrical outer casing having a. an inlet on one side for supplying air and materials to be fibrillated, b. an outlet on the other side for discharging an air stream containing fibrillated materials, c. a plurality of linear projections disposed along the inner peripheral surface of said casing in an alignment which is substantially parallel to the center line of said casing, B. a rotary shaft extending centrally through said casing and which is capable of being revolved at high speed around the center line of said casing, C. at least two rotors affixed to said shaft a. each rotor comprising a disk fixed perpendicularly to said rotary shaft and a plurality of spaced apart vanes fixed to the outer periphery of said disk which extend radially outward to within a very short distance of the inner longitudinal edges of said plurality of linear projections, D. pairs of circular plates fixed to said rotary shaft in such a way that each of said pairs supports a rotor therebetween, E. means adjacent said inlet for sucking in air and the materials to be fibrillated and discharging the air stream containing the fibrillated materials, said means comprising a disk fixed perpendicularly to said rotary shaft, and having a plurality of vanes provided thereon, F. the circular plates of adjacent rotors being spaced apart so as to leave a substantially unobstructed space between adJacent rotors.
Claim 3
Dependent Claim
19 words
An apparatus according to claim 1, wherein said rotors are revolved at a speed of 92 - 110 m/second.
Claim 4
Dependent Claim
34 words
An apparatus according to claim 1, wherein said very short distance between the tips of said vanes and said linear projections of said outer casing is in a range of 4 to 6 mm.
References Cited (Backward Citations)
US3610542A
Cited
US3622086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |