US3874958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making burned-out fabric
Assignee: PLAUENER SPRITZE VEB
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Filing: 1973-07-23
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Granted: 1975-04-01
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Expires: 1993-07-23
Abstract
Abstract A method of making burned-out or etched patterned fabric, whereby fabrics or filaments of a destructible material forming a fabric with indestructible fibers or filaments, is removed by the patterned application of an etching agent and the subsequent activation thereof by heating. The improvement resides in providing the removable filaments as mats of unspun filaments incorporated into a mesh of the nonremovable filaments.
Inventors
- 👤 Walter Scholtis
- 👤 Hans Wallisch
- 👤 Wolfgang Stuber
- 👤 Sabine Fentos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:59
CPC Classifications
D; D06; D06Q; D06Q1/00; D06Q1/02; D04; D04B; D04B1/00; D04B1/10; D04B1/12; D04B1/123; D04B21/00; D04B21/14; D04B21/16; D04B21/165; D10; D10B; D10B2403/00; D10B2403/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24736; Y10T428/8305
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
63 words
A METHOD OF MAKING A PATTERNED FABRIC COMPRISING THE STEPS OF: COMBINING A BODY OF UNSPUN FIBERS CAPABLE OF BEING DISSOLVED BY AN ETCHANT WITH AT LEAST ONE FILAMENT NOT DISSOLVABLE BY SAID ETCHANT INTO A FABRIC , LOCALLY PRINTING SAID FABRIC WITH A PASTE OF SAID ETCHANT ACCORDING TO A PATTERN, HEATING THE PRINTED FABRIC TO ETCH AWAY SAID FIBERS IN THE
Claim 2
Independent Claim
63 words
A METHOD OF MAKING A PATTERNED FABRIC COMPRISING THE STEPS OF: COMBINING A BODY OF UNSPUN FIBERS CAPABLE OF BEING DISSOLVED BY AN ETCHANT WITH AT LEAST ONE FILAMENT NOT DISSOLVABLE BY SAID ETCHANT INTO A FABRIC , LOCALLY PRINTING SAID FABRIC WITH A PASTE OF SAID ETCHANT ACCORDING TO A PATTERN, HEATING THE PRINTED FABRIC TO ETCH AWAY SAID FIBERS IN THE
Claim 3
Dependent Claim
22 words
The method defined in claim 1, further comprising the step of mixing with the etchant-dissolvable fibers fibers which are not etchant dissolvable.
Claim 4
Dependent Claim
20 words
The method defined in claim 1 wherein two differently etchable fibers are used and two different etching pastes are used.
Claim 5
Dependent Claim
12 words
the method defined in claim 1 wherein said fibers are viscose fibers.
Claim 6
Dependent Claim
15 words
The method defined in claim 4 wherein said etching paste is an aluminum sulfate compound.
Claim 7
Independent Claim
125 words
A method of making a patterned fabric comprising the steps of: combining a body of unspun fibers capable of being dissolved by an etchant with at least one filament not dissolvable by said etchant into a fabric; locally printing said fabric with a paste of said etchant according to a pattern; and heating the printed fabric to etch away said fibers in the regions covered by said paste, said body of unspun fibers being stitched through with rows of stitching and the rows of stitching being provided in 15 to 30 stitch rows per 25 mm of transverse width, the stitch length of the stitches of each row being 0.5 to 1 mm and said unspun fibers having a length of at least 100 mm.
Claim 8
Independent Claim
125 words
A method of making a patterned fabric comprising the steps of: combining a body of unspun fibers capable of being dissolved by an etchant with at least one filament not dissolvable by said etchant into a fabric; locally printing said fabric with a paste of said etchant according to a pattern; and heating the printed fabric to etch away said fibers in the regions covered by said paste, said body of unspun fibers being stitched through with rows of stitching and the rows of stitching being provided in 15 to 30 stitch rows per 25 mm of transverse width, the stitch length of the stitches of each row being 0.5 to 1 mm and said unspun fibers having a length of at least 100 mm.
Claim 9
Dependent Claim
40 words
The method defined in claim 6 wherein said filament is composed of a thermally fixable synthetic resin and said paste is thermally activatable said fabric being heated to a temperature sufficient to activate said paste and thermally fix said filament.
Claim 10
Dependent Claim
19 words
The method defined in claim 7 wherein said body of unspun fibers is provided in least two superimposed layers.
Claim 11
Dependent Claim
22 words
The method defiNed in claim 7 wherein said body of unspun fibers contains a minor proportion of fibers unaffected by said etchant.
References Cited (Backward Citations)
US2317466A
Cited
US2901373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |