US4386041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the manufacture of a cushioning material which comprises compressing synthetic filaments, applying adhesive and heating, and pressing the resultant material in the presence of steam
Assignee: Individual
•
Filing: 1981-06-19
•
Granted: 1983-05-31
•
Expires: 2001-06-19
Abstract
Abstract A method for the manufacture of a cushioning material comprising the steps of compressing three-dimensionally crimped short synthetic filaments to form a shaped mass of filaments, applying an adhesive agent to the resultant shaped mass of filaments, then heating the shaped mass thereby drying the adhesive agent adhering to said short filaments and uniting adjacent filaments at the points of their mutual contact, and pressing the resultant crude cushioning material in the presence of steam thereby compressing the crude cushioning material.
Inventors
- 👤 Sadaaki Takagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:11
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; B; B68; B68G; B68G3/00; D04H1/64; D04H1/02; D04H1/42; D04H1/4391; D04H1/44; D04H1/46; D04H1/48; D04H1/488
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
81 words
A method for the manufacture of a cushioning material, comprising the steps of compressing three-dimensionally crimped short synthetic filaments to form a shaped mass of filaments, applying an adhesive agent to the resultant shaped mass of filaments, then heating the shaped mass thereby drying the adhesive agent adhering to said short filaments and uniting adjacent filaments at the points of their mutual contact, and pressing the resultant crude cushioning material in the presence of steam thereby compressing the crude cushioning material.
Claim 2
Independent Claim
81 words
A method for the manufacture of a cushioning material, comprising the steps of compressing three-dimensionally crimped short synthetic filaments to form a shaped mass of filaments, applying an adhesive agent to the resultant shaped mass of filaments, then heating the shaped mass thereby drying the adhesive agent adhering to said short filaments and uniting adjacent filaments at the points of their mutual contact, and pressing the resultant crude cushioning material in the presence of steam thereby compressing the crude cushioning material.
Claim 3
Independent Claim
24 words
A method according to claims 1, wherein the synthetic filaments are monofilaments having a thickness within the range of from 30 to 2,000 denier.
Claim 4
Independent Claim
17 words
A method according to claims 1, wherein the synthetic filaments comprise an aggregate of three-directionally crimped filaments.
Claim 5
Independent Claim
25 words
A method according to claims 1, wherein the crude cushioning has a bulk density within the range of from 0.01 to 0.5 g/cm 3 .
Claim 6
Independent Claim
32 words
A method according to claims 1, wherein the adhesive agent is used in an amount within the range of from 10 to 300 g as solids content per 100 g of filaments.
Claim 7
Independent Claim
30 words
A method according to claims 1, wherein the compression is effected to a level within the range of from 5 to 40% under pressure applied in the presence of steam.
Claim 8
Dependent Claim
49 words
A method according to claim 1, wherein the synthetic filaments are monofilaments having a thickness within the range of from 30 to 2,000 denier, and wherein the compression is effected to a level within the range of from 10 to 30% under pressure applied in the presence of steam.
Claim 9
Dependent Claim
30 words
A method according to claim 1, which further comprises additionally applying an adhesive agent to the cushioning material and heating to dry the cushioning material wet with the adhesive agent.
Claim 10
Dependent Claim
23 words
A method of claim 1, in which a needling step is interposed between the compressing step and the application of the adhesive agent.
References Cited (Backward Citations)
US4154051A
Cited
US4172174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |