US3618754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conformable elastic adhesive tape
Assignee: Kendall Co
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Filing: 1969-02-11
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Granted: 1971-11-09
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Expires: 1989-02-11
Abstract
Abstract A method for producing and the product thereof comprising a conformable elastic pressure-sensitive adhesive tape including a low modulus woven elastic backing weighing, when relaxed, in the range of 100 to 300 grams per square yard and incorporating distributed warp yarns with elastomeric cores in the ratio range of from 1 such warp yarn in three to one in 6 total warp yarns, which distributed warp yarns cause the major surfaces of the backing when relaxed to assume a nonplanar character including intermingled raised and depressed areas, and a layer of pressuresensitive adhesive substantially conforming with and adherent to one of the major surfaces of the backing, major surfaces of the tape becoming more nearly planar upon being stretched, specific embodiments of the tape possessing breathability, transverse hand-tearability, high strength and ready unrollability with its backing and adhesive surfaces in contact.
Inventors
- 👤 Raymond M Hoey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:36
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/02; A61F13/0273; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; C; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J2400/00; C09J2400/20; C09J2400/26; C09J2400/263
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
27 words
The tape of claim 1 wherein the relaxed corrugated surface configuration takes the form of ridges and valleys extending transversely from edge to edge of said tape.
Claim 2
Dependent Claim
69 words
The tape of claim 1, having an adhesive side and a nonadhesive side and rolled, partially relaxed, upon itself, preserving to a degree the transverse ridges and valleys thereof in the convoluted roll, substantial portions of the nonadhesive side of said tape being out of contact with the adhesive side thereof, said substantially reduced contact enhancing the unrollability of said tape and reducing the probability of deleterious adhesive delamination.
Claim 3
Dependent Claim
21 words
The tape of claim 1 wherein a fully extended length thereof is greater than 135 percent of the relaxed length thereof.
Claim 4
Dependent Claim
41 words
The tape of claim 1 wherein the woven elastic backing, before coating with adhesive, may be stretched to a length 2.2 times its relaxed length with a stretching force applied warpwise of from about 0.3 to 1.0 pounds per inch width.
Claim 5
Dependent Claim
30 words
The tape of claim 1 wherein the warp yarns of the woven elastic backing are equivalent in size to cotton 30''s and the filling yarns are equivalent to cotton 10''s.
Claim 6
Dependent Claim
18 words
The tape of claim 1 Wherein the warp yarns other than those with elastomeric cores are stretch nylon.
Claim 7
Dependent Claim
15 words
The tape of claim 1 wherein the side edges are smooth cut and ravel resistant.
Claim 8
Dependent Claim
26 words
The tape of claim 1 wherein the elastomeric warp yarns of the woven elastic backing float across a plurality of successive picks on the adhesive side.
Claim 9
Independent Claim
139 words
The method of producing a conformable elastic permanently pressure-sensitive adhesive tape comprising forming a fabric by interweaving textile filling yarns with warp yarns consisting of stretched elastomeric yarns interspersed with normally tensioned textile yarns in a weave such that the stretched elastomeric warp yarns have an average float length on at least one side of said fabric which exceeds the average float length of other warp yarns on that side, layer-coating said fabric in the fully stretched condition with a permanently tacky, pressure-sensitive adhesive to produce an adhesive tape, subjecting portions of said tape, while spacially free to retract, to temperatures which soften said adhesive, whereby retraction of said elastomeric warp yarns occurs, said retraction forming said tape surfaces into a configuration in the form of transverse ridges and valleys thereby imparting enhanced elasticity and conformability to said tape.
Claim 10
Dependent Claim
16 words
The method of claim 10 wherein the layer coating with pressure-sensitive adhesive is a calendering method.
Claim 11
Dependent Claim
18 words
The method of claim 10 wherein the elastomeric core yarns are fully stretched when the fabric is woven.
Claim 12
Dependent Claim
29 words
The method of claim 10 wherein the fabric is back coated with an interrupted coating to which the adhesive has reduced adhesion and rolling said tape into adhesive rolls.
Claim 13
Dependent Claim
25 words
The method of claim 10 wherein the elastomeric core yarns are woven with a predominance of warp yarns of the weakness of 30''s spun rayon.
Claim 14
Dependent Claim
25 words
The method of claim 10 wherein the elastomeric core yarns are woven with a predominance of warp yarns of the strength of 70/2 stretch nylon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |