Patent US4584814A successfully refreshed from Google Patents.
Patent US5281474A successfully refreshed from Google Patents.
US5281474A
Expired / Lapsed
US
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Heat-sensitive adhesive sheet and information recorded material using the same
Assignee: Nippon Paper Industries Co Ltd
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Filing: 1991-09-13
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Granted: 1994-01-25
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Expires: 2011-09-13
Abstract
Abstract A heat-sensitive adhesive sheet for bonding a pair of information-recorded faces, belonging to the same sheet or two different sheets of recording material, together by application of heat thereto, which comprises three or more layers, including a support and a synthetic resin layer coated on either side of the support, having a peeling resistance ranging from 10 to 150 g/50 mm between the support and each synthetic resin layer in the T-peel test performed at a peeling speed of 300 mm/min. in the atmosphere of 20° C. and 65% RH, and a peeling resistance greater than 300 g/50 mm, measured under the same conditions as described above, between each synthetic resin layer and the information-recorded face when heated in a condition wherein the adhesive sheet is sandwiched in between a pair of information-recorded faces of the recording material, and an information-recorded material, preferably of postcard size which is made by inserting the foregoing heat-sensitive adhesive sheet between each pair of information-recorded faces belonging to one sheet or two or more sheets of recording material, wherein at least two information-recorded faces are present, and then by heating them at a temperature of 100° C. or lower to unite them together through heat-sensitive adhesion.
Inventors
- 👤 Morio Matsuzaki
- 👤 Nobuhiro Hatoh
- 👤 Hisashi Mino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:59
CPC Classifications
B; B42; B42D; B42D15/00; B42D15/02; B42D15/025; C; C09; C09J; C09J7/00; C09J7/30; C09J7/35; C09J2301/00; C09J2301/10; C09J2301/12; C09J2301/124; C09J2301/30; C09J2301/304; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10S428/915; Y10S428/916; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
176 words
A heat-sensitive adhesive sheet for bonding a pair of information-recorded faces of one or two sheets of recording material together by application of heat thereto, said adhesive sheet comprising: an opaque support layer having two sides, a synthetic resin layer coated on one side of said opaque support layer, and another synthetic resin layer coated on the other side of said opaque support layer, each of said synthetic resin layers having a peeling resistance of 10-150 g/50 mm between said opaque support layer and each of said synthetic resin layers in a T-peel test performed at a peeling speed of 300 mm/min. in an atmosphere of 20° C. and 65% RH, said synthetic resin layers capable of exhibiting peeling resistance greater than 300 g/50 mm, measured under the same conditions as said T-peel test, between each of said synthetic resin layers and an information-recorded face of a recording material, and each of said synthetic resin layers having a glass transition temperature of at least 25° C. and a Vicat softening temperature of at least 45° C.
Claim 2
Dependent Claim
176 words
A heat-sensitive adhesive sheet for bonding a pair of information-recorded faces of one or two sheets of recording material together by application of heat thereto, said adhesive sheet comprising: an opaque support layer having two sides, a synthetic resin layer coated on one side of said opaque support layer, and another synthetic resin layer coated on the other side of said opaque support layer, each of said synthetic resin layers having a peeling resistance of 10-150 g/50 mm between said opaque support layer and each of said synthetic resin layers in a T-peel test performed at a peeling speed of 300 mm/min. in an atmosphere of 20° C. and 65% RH, said synthetic resin layers capable of exhibiting peeling resistance greater than 300 g/50 mm, measured under the same conditions as said T-peel test, between each of said synthetic resin layers and an information-recorded face of a recording material, and each of said synthetic resin layers having a glass transition temperature of at least 25° C. and a Vicat softening temperature of at least 45° C.
Claim 3
Dependent Claim
22 words
A heat-sensitive adhesive sheet of claim 1, wherein said support layer is a light-absorbing sheet containing a dye, a pigment, or both.
Claim 4
Dependent Claim
22 words
A heat-sensitive adhesive sheet of claim 1, wherein each of said synthetic resin layers has a thickness of at most 20 μm.
Claim 5
Dependent Claim
48 words
A heat-sensitive adhesive sheet of claim 1, wherein each of said synthetic resin layers contains a resin selected from the group consisting of acryl resins, vinyl chloride-vinyl acetate copolymerized resins, polyester resins, vinyl chloride-vinyl propionate copolymerized resins, polyvinyl formal resins, polyvinyl butyral resins, polyolefin resins, and mixtures thereof.
Claim 6
Dependent Claim
37 words
A heat-sensitive adhesive sheet of claim 1, wherein each of said synthetic resin layers contains a dispersion of an ethylenic olefin-copolymerized resin, a low density polyolefin, a vinyl acetate-olefin copolymerized resin, an ionomer resin, or mixtures thereof.
Claim 7
Dependent Claim
64 words
A heat-sensitive adhesive sheet of claim 1, wherein each of said synthetic resin layers is a mixed resin layer formed by coating and drying a composition prepared by mixing a resin dispersion selected from the group consisting of olefin-copolymerized resin dispersions, low density polyolefin dispersions, and ionomer resin dispersions, with an emulsified polyolefin resin in a mixing ratio of 95:5-5:95 on a solids basis.
Claim 8
Dependent Claim
20 words
A heat-sensitive adhesive sheet of claim 1, wherein said adhesive sheet consists of said support and said synthetic resin layers.
Claim 9
Dependent Claim
17 words
A heat-sensitive adhesive sheet of claim 1, wherein said support layer is a plastic laminated paper sheet.
Claim 10
Dependent Claim
31 words
A heat-sensitive adhesive sheet of claim 1, wherein said support layer is a synthetic resin film selected from the group consisting of polyethylene film, polypropylene film, polyester film, and polyamide film.
Claim 11
Dependent Claim
23 words
A heat-sensitive adhesive sheet of claim 3, wherein each of said synthetic resin layers has a thickness of at most about 10 microns.
Claim 12
Dependent Claim
20 words
A heat-sensitive adhesive sheet according to claim 1, wherein said synthetic resin layers are both made of the same material.
Claim 13
Dependent Claim
17 words
A heat-sensitive adhesive sheet of claim 6, wherein the resin dispersion is vinyl acetate-olefin copolymerized resin dispersion.
Claim 14
Dependent Claim
16 words
A heat-sensitive adhesive sheet of claim 1, wherein said support layer is a cellulose triacetate film.
Claim 15
Dependent Claim
15 words
A heat-sensitive adhesive sheet of claims 1, wherein said support layer is a polycarbonate film.
Claim 16
Dependent Claim
54 words
An information-recorded material comprising: at least one heat-sensitive adhesive sheet of claim 1, which is inserted between a pair of information-recorded faces of at least one sheet of recording material, wherein said adhesive sheet and pair of information-recorded faces are bonded together by heat-sensitive adhesion at a temperature of not more than 100° C.
Claim 17
Dependent Claim
22 words
An information-recorded material according to claim 15, wherein each of said synthetic resin layers has a thickness of at most 20 microns.
Claim 18
Dependent Claim
19 words
An information-recorded material according to claim 15, wherein said synthetic resin layers are both made of the same material.
Claim 19
Dependent Claim
48 words
An information-recorded material according to claim 15, wherein a single sheet of recorded material is folded to provide two pairs of opposed information-recorded faces and said information-recorded material contains two of said adhesive sheets, each of said adhesive sheets being inserted between a pair of opposed information-recorded faces.
Claim 20
Dependent Claim
12 words
An information-recorded material of claim 15, wherein said material is a postcard.
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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) | 1997-01-24 | 1997-07-26 | 1998-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-24 | 2001-07-26 | 2002-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-24 | 2005-07-26 | 2006-01-25 | $7700.00 | Window Closed / Lapsed |