US4649014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded articles of nonwoven fabric containing synthetic fiber and process for producing the same
Assignee: MIDORISHI M B Co Ltd A JAPANESE CORP
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Filing: 1985-06-03
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Granted: 1987-03-10
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Expires: 2005-06-03
Abstract
Abstract Electrically conductive molded articles obtained by heating and compressing a nonwoven fabric comprising at least one kind of synthetic fiber and an electrically conductive material blended therewith, and a process for producing an electrically conductive molded article of a desired shape by heating said nonwoven fabric at the melting or softening temperature of the synthetic fiber and then cooling it while compressing.
Inventors
- 👤 Kiyoshi Tochikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:04
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/12; B29D35/14; B29D35/142; B29B; B29B13/00; B29B13/02; B29B13/023; B29C; B29C70/00; B29C70/88; B29C70/882; D; D04; D04H; D04H1/00; D04H1/40; D04H1/413; D04H1/42; D04H1/4209; D04H1/4234; D04H1/4242; D04H1/54; D04H1/558; B29C35/00; B29C35/02; B29C35/04; B29C35/045; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/46; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0854; B29K2105/25; B29K2995/00; B29K2995/0003; B29K2995/0005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A process of making a nonwoven fabric finished material useful as a sole for footwear, consisting of the steps of (a) blending a material selected from the group consisting of polypropylene noil, acrylic noil, polyester noil, motley noil, with a conductive material selected from the group consisting of carbon fibers, metallized glass fibers, copper-surface acrylic fibers and mixtures thereof, the conductive material being blended with the noil material in a ratio of about 1% to about 10%, by weight of the entire composition to form a nonwoven workpiece having a thickness of about 13 mm; (b) placing said workpiece in a hot-air drying zone so as to pass hot air through the workpiece at a heat of about 170° C. to about 220° C. at which temperature range the workpiece is melted; (c) compressing said workpiece under pressure of about 50 to about 200 kg/cm 2 while rapidly cooling the workpiece and molding the workpiece to form a plate of a thickness of about 3 mm; and, (d) cutting the workpiece into a desired shape with a cutting die.
Claim 2
Dependent Claim
179 words
A process of making a nonwoven fabric finished material useful as a sole for footwear, consisting of the steps of (a) blending a material selected from the group consisting of polypropylene noil, acrylic noil, polyester noil, motley noil, with a conductive material selected from the group consisting of carbon fibers, metallized glass fibers, copper-surface acrylic fibers and mixtures thereof, the conductive material being blended with the noil material in a ratio of about 1% to about 10%, by weight of the entire composition to form a nonwoven workpiece having a thickness of about 13 mm; (b) placing said workpiece in a hot-air drying zone so as to pass hot air through the workpiece at a heat of about 170° C. to about 220° C. at which temperature range the workpiece is melted; (c) compressing said workpiece under pressure of about 50 to about 200 kg/cm 2 while rapidly cooling the workpiece and molding the workpiece to form a plate of a thickness of about 3 mm; and, (d) cutting the workpiece into a desired shape with a cutting die.
References Cited (Backward Citations)
US4532099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |