US4560594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming adhesive bond and a liquid crystal adhesive
Assignee: Nordson Corp
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Filing: 1982-03-12
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Granted: 1985-12-24
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Expires: 2002-03-12
Abstract
Abstract A method of forming an adhesive bond comprising heating a thermoplastic, polymeric, thermotropic nematic liquid crystalline material until the material becomes fluid, and applying this material onto a substrate. Since the liquid crystalline material exhibits excellent tensile strength, the present method can be employed not only as an adhesive but also to strap articles and band a plurality of articles together.
Inventors
- 👤 Walter H. Cobbs, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:56
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/60; C09; C09J; C09J167/00; C09J5/00; C09J5/06; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3804; C09K19/3809; C09K2323/00; C09K2323/05; C09K2323/055; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
A method of strapping one or more articles comprising heating a thermoplastic, polymeric, thermotropic, nematic liquid crystalline material at least to the C-N point of said polymeric material and applying a molten strip of said material onto the surface of said one or more articles completely around the periphery of said one or more articles to form a contnuous strip of material, applying an orienting force to said polymeric material while said material is still in a molten state.
Claim 2
Independent Claim
79 words
A method of strapping one or more articles comprising heating a thermoplastic, polymeric, thermotropic, nematic liquid crystalline material at least to the C-N point of said polymeric material and applying a molten strip of said material onto the surface of said one or more articles completely around the periphery of said one or more articles to form a contnuous strip of material, applying an orienting force to said polymeric material while said material is still in a molten state.
Claim 3
Dependent Claim
13 words
The method as claimed in claim 1 wherein said article comprises a box.
Claim 4
Dependent Claim
21 words
The method as claimed in claim 1 wherein said article comprises a plurality of articles positioned in contact with each other.
Claim 5
Dependent Claim
133 words
A method as claimed in claim 1 wherein said thermoplastic, polymeric nematic liquid crystalline material comprises a copolyester having an inherent viscosity of at least 0.4 measured at 25° C. using 0.5 gram of polymer per 100 ml of a solvent compound of 60 volumes of phenol and 40 volumes of tetrachloroethane and having less than 3 mole percent of aliphatic to aromatic oxygen linkages, the copolyester comprised of the following divalent radicals: ##STR2## wherein R 1 is a divalent aromatic radical having 6 to 16 carbon atoms with the carbonyl linkages separated by at least 3 carbon atoms; at least 90 mole percent of radical (C) is the para isomer; and the range of radical (C) is 30 to 70 mole percent based on the total moles of (A) and (C) combined.
Claim 6
Dependent Claim
10 words
An article strapped according to the method of claim 1.
Claim 7
Dependent Claim
12 words
A plurality of articles strapped according to the method of claim 3.
References Cited (Backward Citations)
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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) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |