US5080957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape having partially embedded ribs
Assignee: 3M Co
•
Filing: 1989-08-01
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Granted: 1992-01-14
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Expires: 2009-08-01
Abstract
Abstract Tape comprising a backing bearing on at least one major surface thereof a plurality of ribs disposed substantially longitudinally thereon, and further bearing on at least one major surface thereof a layer of adhesive. The ribs are joined to the backing such that there exists a notch-like separation between each end of the rib and the surface of the backing. No more than 50% of the cross-section of the ribs should project from the rib-bearing surface of the tape. It is preferred that the adhesive be a pressure-sensitive adhesive. The tape of this invention can be prepared by means of coextrusion techniques.
Inventors
- 👤 Ronald P. Leseman
- 👤 Thomas L. Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:02
CPC Classifications
B; B32; B32B; B32B37/00; B32B37/14; B32B37/15; B32B37/153; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/16; C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; B29C48/001; B29C48/0022; B29C48/05; C09J2301/00; C09J2301/10; C09J2301/18; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10S428/91; Y10T; Y10T428/00; Y10T428/14; Y10T428/1452; Y10T428/1462; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24132; Y10T428/24479; Y10T428/24488; Y10T428/24521; Y10T428/24537; Y10T428/24554; Y10T428/2457; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249947; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2839; Y10T428/2848; Y10T428/2852; Y10T428/2857; Y10T428/2878; Y10T428/2883; Y10T428/2891; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
136 words
A tape comprising a backing formed from an extrudable polymeric material, said backing having fused thereto a plurality of ribs disposed longitudinally on at least one major surface thereof, said ribs having been formed from an extrudable polymeric material, said ribs being at least partially embedded in recesses in the surface of said backing such that no more than about 50% of any rib protrudes beyond the surface of said backing, the cross section of each rib that is perpendicular to the longitudinal direction of said tape having two ends, each end of each rib separated from the surface of said backing by a notch such that said each end of each rib is not in contact with said backing, said tape being oriented in the machine direction after said ribs are fused to said backing.
Claim 2
Dependent Claim
136 words
A tape comprising a backing formed from an extrudable polymeric material, said backing having fused thereto a plurality of ribs disposed longitudinally on at least one major surface thereof, said ribs having been formed from an extrudable polymeric material, said ribs being at least partially embedded in recesses in the surface of said backing such that no more than about 50% of any rib protrudes beyond the surface of said backing, the cross section of each rib that is perpendicular to the longitudinal direction of said tape having two ends, each end of each rib separated from the surface of said backing by a notch such that said each end of each rib is not in contact with said backing, said tape being oriented in the machine direction after said ribs are fused to said backing.
Claim 3
Dependent Claim
21 words
The tape of claim 1 wherein no more than about 25% of any rib protrudes beyond the surface of said backing.
Claim 4
Dependent Claim
21 words
The tape of claim 1 wherein no more than about 10% of any rib protrudes beyond the surface of said backing.
Claim 5
Dependent Claim
20 words
The tape of claim 1 wherein at least one major surface of said backing bears a layer of adhesive thereon.
Claim 6
Dependent Claim
25 words
The tape of claim 4 further including a low adhesion backsize layer on the major surface of the backing opposite the surface bearing the adhesive.
Claim 7
Dependent Claim
12 words
The tape of claim 4 wherein said adhesive is a pressure-sensitive adhesive.
Claim 8
Dependent Claim
26 words
The tape of claim 6 wherein said adhesive is a member selected from the group consisting of acrylates, resin-tackified natural rubber adhesives, and tackified block copolymers.
Claim 9
Dependent Claim
11 words
The tape claim 1 wherein the ribs are formed from polypropylene.
Claim 10
Dependent Claim
13 words
The tape of claim 1 wherein the ribs are formed from polyvinyl alcohol.
Claim 11
Dependent Claim
17 words
The tape of claim 1 wherein there are at least 10 ribs per inch width of backing.
Claim 12
Dependent Claim
17 words
The tape of claim 1 wherein there are at least 20 ribs per inch width of backing.
Claim 13
Dependent Claim
17 words
The tape of claim 1 wherein there are at least 25 ribs per inch width of backing.
Claim 14
Dependent Claim
14 words
The tape of claim 1 wherein cross-direction tear resistance is at least 3 lbs.
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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) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |