Patent US3770027A successfully refreshed from Google Patents.
Patent US3853595A successfully refreshed from Google Patents.
US3853595A
Expired / Lapsed
US
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Sewing tape
Assignee: 3M Co
•
Filing: 1972-09-07
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Granted: 1974-12-10
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Expires: 1992-09-07
Abstract
Abstract Sewing tape which can be adhered to fabric, stitched through without gumming the needle and thereafter easily removed from the fabric is made by coating certain polyolefin film backings with a pressure-sensitive adhesive having a loss shear modulus greater than 106 dynes/cm2. At 7% elongation in the crossweb direction, the film shows a tensile stress of 75-250 kg/cm2 and a tensile force of 200-2,000 grams/cm.
Inventors
- 👤 J Pedginski
- 👤 W Peper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:47
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/24; C09J7/241; C09J7/243; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/28
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
12 words
IS IN THE RANGE OF ABOUT 12 TO 15 MICRONS THICK AND
Claim 2
Dependent Claim
12 words
IS IN THE RANGE OF ABOUT 12 TO 15 MICRONS THICK AND
Claim 3
Dependent Claim
13 words
A TENSILE STRESS IN THE RANGE OF ABOUT 75 TO 250 KG/CM2 AND
Claim 4
Dependent Claim
13 words
A TENSILE STRESS IN THE RANGE OF ABOUT 75 TO 250 KG/CM2 AND
Claim 5
Dependent Claim
43 words
A COLORED, MATTE-FINISHED NORMALLY TACKY AND PRESSURESENSITIVE ADHESIVE TAPE PROVIDED WITH REPEATING PRINTED INDICIAAT PREDETERMINED INTERVALS AND HAVING PARTICULAR UTILITY IN SEWING PROCEDURES, COMPRISING IN COMBINATION: A. SELF-SUPPORTING MEDIUM TO HIGH DENSITY POLYETHYLENE FILM BACKING, HAVING, AT 7% ELONGATION IN THE CROSS DIRECTION,
Claim 6
Dependent Claim
43 words
A COLORED, MATTE-FINISHED NORMALLY TACKY AND PRESSURESENSITIVE ADHESIVE TAPE PROVIDED WITH REPEATING PRINTED INDICIAAT PREDETERMINED INTERVALS AND HAVING PARTICULAR UTILITY IN SEWING PROCEDURES, COMPRISING IN COMBINATION: A. SELF-SUPPORTING MEDIUM TO HIGH DENSITY POLYETHYLENE FILM BACKING, HAVING, AT 7% ELONGATION IN THE CROSS DIRECTION,
Claim 7
Dependent Claim
42 words
A THICKNESS IN THE RANGE OF ABOUT 40 TO 80 MICRONS, SUCH THAT THE TENSILE FORCE IS IN THE RANGE OF ABOUT 400-2,000 GMS/CM WIDTH; B. COATED ON ONE SURFACE OF SAID BACKING A LAYER OF NORMALLY TACKY AND PRESSURE-SENSITIVE ADHESIVE WHICH
Claim 8
Dependent Claim
42 words
A THICKNESS IN THE RANGE OF ABOUT 40 TO 80 MICRONS, SUCH THAT THE TENSILE FORCE IS IN THE RANGE OF ABOUT 400-2,000 GMS/CM WIDTH; B. COATED ON ONE SURFACE OF SAID BACKING A LAYER OF NORMALLY TACKY AND PRESSURE-SENSITIVE ADHESIVE WHICH
Claim 9
Dependent Claim
15 words
The tape of claim 1 wherein the adhesive is a 90:10 iso-octyl acrylate:acrylic acid copolymer.
Claim 10
Dependent Claim
48 words
has a loss shear modulus of more than 106 dynes/cm2, whereby the tape can be adhered firmly to fabric, stitched through rapidly using an electric sewing machine without gumming the needle, and completely and easily removed from a line of stitching which extends therethrough without loosening the stitches.
Claim 11
Dependent Claim
48 words
has a loss shear modulus of more than 106 dynes/cm2, whereby the tape can be adhered firmly to fabric, stitched through rapidly using an electric sewing machine without gumming the needle, and completely and easily removed from a line of stitching which extends therethrough without loosening the stitches.
Claim 12
Dependent Claim
42 words
a thickness in the range of about 40 to 80 microns, such that the tensile force is in the range of about 400-2,000 gms/cm width; b. coated on one surface of said backing a layer of normally tacky and pressure-sensitive adhesive which
Claim 13
Dependent Claim
42 words
a thickness in the range of about 40 to 80 microns, such that the tensile force is in the range of about 400-2,000 gms/cm width; b. coated on one surface of said backing a layer of normally tacky and pressure-sensitive adhesive which
Claim 14
Dependent Claim
48 words
HAS A LOSS SHEAR MODULUS OF MORE THAN 10**6 DYNES/CM2, WHEREBY THE TAPE CAN BE ADHERED FIRMLY TO FABRIC, STITCHED THROUGH RAPIDLY USING AN ELECTRIC SEWING MACHINE WITHOUT GUMMING THE NEEDLE, AND COMPLETELY AND EASILY REMOVED FROM A LINE OF STITCHING WHICH EXTENDS THERETHROUGH WITHOUT LOOSENING THE STITCHES.
Claim 15
Dependent Claim
48 words
HAS A LOSS SHEAR MODULUS OF MORE THAN 10**6 DYNES/CM2, WHEREBY THE TAPE CAN BE ADHERED FIRMLY TO FABRIC, STITCHED THROUGH RAPIDLY USING AN ELECTRIC SEWING MACHINE WITHOUT GUMMING THE NEEDLE, AND COMPLETELY AND EASILY REMOVED FROM A LINE OF STITCHING WHICH EXTENDS THERETHROUGH WITHOUT LOOSENING THE STITCHES.
Claim 16
Dependent Claim
13 words
The tape of claim 2 wherein the film is a medium density polyethylene.
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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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |