Patent US3146327A successfully refreshed from Google Patents.
US4179529A
Expired / Lapsed
US
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Method of lubricating a thermoplastic resin strand for sliding contact in a reshaping device
Assignee: Roehm GmbH Darmstadt
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Filing: 1978-03-13
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Granted: 1979-12-18
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Expires: 1998-03-13
Abstract
Abstract A method is disclosed for lubricating surfaces which are in temporary frictional contact which comprises introducing between said surfaces a lubricating liquid which can be solidified by heat or radiation and, after said temporary contact is broken, then solidifying said liquid by heating said surfaces or exposing said surfaces to radiation.
Inventors
- 👤 Heinz Vetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:26
CPC Classifications
C; C10; C10M; C10M107/00; B; B21; B21C; B21C9/00; C10M2205/00; C10M2205/04; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/102; C10M2211/00; C10M2211/08; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
93 words
The method of making a formed strand of thermoplastic synthetic resin having a solidified coating thereon, which method comprises coating an extruded strand of said resin, while in a thermoplastic or thermoelastic condition, with a lubricating layer of a lubricating liquid which can be solidified by heat or radiation, bringing said lubricated synthetic resin strand into sliding contact with a solid surface, whereby form is imparted to said strand, separating the formed strand from said solid surface, and then hardening said layer of lubricating liquid to form a solid coat on said strand.
Claim 2
Independent Claim
93 words
The method of making a formed strand of thermoplastic synthetic resin having a solidified coating thereon, which method comprises coating an extruded strand of said resin, while in a thermoplastic or thermoelastic condition, with a lubricating layer of a lubricating liquid which can be solidified by heat or radiation, bringing said lubricated synthetic resin strand into sliding contact with a solid surface, whereby form is imparted to said strand, separating the formed strand from said solid surface, and then hardening said layer of lubricating liquid to form a solid coat on said strand.
Claim 3
Dependent Claim
20 words
A method as in claim 1 wherein said lubricating liquid comprises an ethylenically-unsaturated compound which is polymerizable by free radicals.
Claim 4
Dependent Claim
27 words
A method as in claim 1 wherein said lubricating liquid comprises a polymerization initiator forming free radicals when heated or irradiated with visible or ultra violet light.
Claim 5
Dependent Claim
15 words
A method as in claim 1 wherein said lubricating liquid comprises a dissolved macromolecular compound.
Claim 6
Dependent Claim
27 words
A method as in claim 1 wherein said lubricating liquid has a viscosity between 1 Pa.s and 500 Pa.s at the temperature at which it is used.
Claim 7
Dependent Claim
15 words
A method as in claim 1 wherein said lubricant liquid comprises methyl methacrylate and polymethylmethacrylate.
Claim 8
Dependent Claim
28 words
A method as in claim 1 wherein said lubricating liquid comprises at least one mono- or poly-unsaturated free radical-polymerizable monomer having a boiling point above about 150° C.
Claim 9
Dependent Claim
18 words
A method as in claim 7 wherein said lubricating liquid further comprises a dissolved saturated or unsaturated resin.
Claim 10
Dependent Claim
16 words
A method as in claim 7 wherein said lubricating liquid also comprises a photoinitiator for polymerization.
Claim 11
Dependent Claim
16 words
A method as in claim 8 wherein said lubricating liquid also comprises a photoinitiator for polymerization.
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) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |