US4507539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for continuous treatment of a cloth with the use of low-temperature plasma and an apparatus therefor
Assignee: Sando Iron Works Co Ltd
•
Filing: 1982-12-28
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Granted: 1985-03-26
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Expires: 2002-12-28
Abstract
Abstract A method for the continuous treatment of a cloth using a low-temperature plasma, wherein a cloth is dried by heating the cloth in a reduced pressure chamber, and the cloth is then transported through a low-temperature plasma atmosphere in a low-temperature plasma treating chamber without exposing the cloth to the atmosphere under ordinary pressure. An apparatus for carrying out the process is also disclosed. The cloth can further be subjected to the low-temperature plasma polymerization treatment in another reduced pressure chamber.
Inventors
- 👤 Yoshikazu Sando
- 👤 Tokuju Goto
- 👤 Itsuo Tanaka
- 👤 Hiroshi Ishidoshiro
- 👤 Matsuo Minakata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:59
CPC Classifications
D; D06; D06M; D06M10/00; D06M10/02; D06M10/025; B; B29; B29C; B29C59/00; B29C59/14; D06B; D06B23/00; D06B23/14; D06B23/16; D06M14/00; D06M14/18; B29C2059/147; B29K; B29K2313/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
79 words
A method for continuous treatment of a cloth with the use of low-temperature plasma, comprising drying a cloth to be treated by heating the cloth in a reduced pressure chamber at a pressure between 10 to 100 Torr, and directly transporting the cloth without exposing the cloth to atmospheric pressure through a low-temperature plasma atmosphere in a low-temperature plasma treating chamber at a pressure between 0.1 to 10 Torr and an electric frequency of 1 KHz to 300 MHz.
Claim 2
Independent Claim
79 words
A method for continuous treatment of a cloth with the use of low-temperature plasma, comprising drying a cloth to be treated by heating the cloth in a reduced pressure chamber at a pressure between 10 to 100 Torr, and directly transporting the cloth without exposing the cloth to atmospheric pressure through a low-temperature plasma atmosphere in a low-temperature plasma treating chamber at a pressure between 0.1 to 10 Torr and an electric frequency of 1 KHz to 300 MHz.
Claim 3
Dependent Claim
50 words
A method for continuous treatment to a cloth with the use of low-temperature plasma according to claim 1, in which the cloth transported through the low-temperature plasma treating chamber is further treated with a polymerizable monomer gas in another reduced pressure chamber for low-temperature plasma polymerization treatment of the cloth.
Claim 4
Independent Claim
97 words
An apparatus for the continuous treatment of cloth with the use of low-temperature plasma, comprising a low-temperature plasma treating reactor divided into three chambers, the first chamber being capable of heating the cloth therein at a reduced pressure between 10 to 100 Torr and in sequence, a low-temperature plasma treating chamber and thereafter a second reduced pressure chamber capable of subjecting the cloth therein to a pressure between 10 to 100 Torr, each of the three chambers being arranged so that the cloth in passing from one chamber to the next, is not exposed to atmospheric pressure.
Claim 5
Independent Claim
97 words
An apparatus for the continuous treatment of cloth with the use of low-temperature plasma, comprising a low-temperature plasma treating reactor divided into three chambers, the first chamber being capable of heating the cloth therein at a reduced pressure between 10 to 100 Torr and in sequence, a low-temperature plasma treating chamber and thereafter a second reduced pressure chamber capable of subjecting the cloth therein to a pressure between 10 to 100 Torr, each of the three chambers being arranged so that the cloth in passing from one chamber to the next, is not exposed to atmospheric pressure.
Claim 6
Dependent Claim
45 words
An apparatus for continuous treatment of a cloth with the use of low-temperature plasma according to claim 3, which further comprises a gas supply pipe and a gas exhaust pipe provided in the second reduced pressure chamber for passing a polymerizable monomer through the chamber.
References Cited (Backward Citations)
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Cited
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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) | 1988-03-25 | 1988-09-24 | 1989-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-25 | 1992-09-24 | 1993-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-25 | 1996-09-24 | 1997-03-26 | $7700.00 | Window Closed / Lapsed |