US5334447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam substrate-attached adhesive sheets
Assignee: Nitto Denko Corp
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Filing: 1993-12-03
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Granted: 1994-08-02
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Expires: 2013-12-03
Abstract
Abstract A foam substrate-attached adhesive sheet or tape comprising a substrate having formed thereon a layer of a pressure-sensitive adhesive, wherein the substrate is a foam elastomer having a breaking elongation of at least 800% and an apparent 800% modulus of from 1.0 to 15 kg/cm 2 in a tensile test of 23° C., and a breaking elongation of at least 400% and an apparent 400% modulus of from 2.0 to 60 kg/cm 2 in a tensile test of -30° C.
Inventors
- 👤 Yoshinao Kitamura
- 👤 Shinkiti Yamashita
- 👤 Yasuyuki Tokunaga
- 👤 Masahiko Ando
- 👤 Takeshi Yamanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:21
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/26; C08; C08L; C08L21/00; C08L23/00; C08L23/02; C08L23/16; C08L71/00; C08L71/02; C08L71/03; C08L75/00; C08L75/04; C08L83/00; C08L83/04; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249983; Y10T428/249985; Y10T428/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
A foam substrate-attached adhesive sheet or tape comprising a substrate having formed thereon a layer of a pressure-sensitive adhesive, wherein the substrate is a foam elastomer having a breaking elongation of at least 800% and an apparent 800% modulus of from 1.0 to 15 kg/cm 2 in a tensile test of 23° C., and a breaking elongation of at least 400% and an apparent 400% modulus of from 2.0 to 60 kg/cm 2 in a tensile test of -30° C.
Claim 2
Dependent Claim
80 words
A foam substrate-attached adhesive sheet or tape comprising a substrate having formed thereon a layer of a pressure-sensitive adhesive, wherein the substrate is a foam elastomer having a breaking elongation of at least 800% and an apparent 800% modulus of from 1.0 to 15 kg/cm 2 in a tensile test of 23° C., and a breaking elongation of at least 400% and an apparent 400% modulus of from 2.0 to 60 kg/cm 2 in a tensile test of -30° C.
Claim 3
Dependent Claim
56 words
The foam substrate-attached adhesive sheet or tape of claim 1, wherein the foam elastomer is at least one member selected from the group consisting of a butyl rubber, a chloroprene rubber, an ethylene-propylene copolymer, an ethylene-propylene-diene terpolymer, an ethylene-acrylic acid ester copolymer, an urethane rubber, an epichlorolydrin rubber, a silicone rubber, and a hydrogenated nitrile rubber.
Claim 4
Dependent Claim
18 words
The foam substrate-attached adhesive sheet or tape of claim 1, wherein the foam elastomer is an epichlorohydrin rubber.
Claim 5
Dependent Claim
44 words
The foam substrate-attached adhesive sheet or tape of claim 3, wherein the epichlorohydrin rubber is at least one member selected from the group consisting of an epichlorohydrin homopolymer, an epichlorohydrin-ethylene oxide copolymer, an epichlorolydrin-allyl glycidyl ether copolymer, and an epichlorohydrin-ethylene oxide-allyl glycidyl ether terpolymer.
Claim 6
Dependent Claim
29 words
The foam substrate-attached adhesive sheet or tape of claim 1, wherein the foam elestomer has a breaking elongation of at least 1,000% in a tensile test at 23° C.
Claim 7
Dependent Claim
33 words
The foam substrate-attached adhesive sheet or tape of claim 1, wherein the foam elastomer has an apparent 800% modulus of from 2.0 to 10 kg/cm 2 in a tensile test at 23° C.
Claim 8
Dependent Claim
29 words
The foam substrate-attached adhesive sheet or tape of claim 1, wherein the foam elastomer has a breaking elongation of at least 600% in a tensile test at -30° C.
Claim 9
Dependent Claim
33 words
The foam substrate-attached adhesive sheet or tape of claim 1, wherein the foam elastomer has an apparent 400% modulus of from 4.0 to 30 kg/cm 2 in a tensile test at -30° C.
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) | 1997-08-01 | 1998-01-31 | 1998-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-01 | 2002-01-31 | 2002-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-01 | 2006-01-31 | 2006-08-02 | $7700.00 | Window Closed / Lapsed |