US4282286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making destructible marking film and method for marking
Assignee: Nippon Carbide Industries Co Inc
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Filing: 1979-12-03
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Granted: 1981-08-04
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Expires: 1999-12-03
Abstract
Abstract A destructible marking film having a thickness of about 30 to about 60 microns and a destructibility of not more than 60 kg.cm/mm, said film being composed of a resin composition consisting essentially of (A) 100 parts by weight of a vinyl chloride resin having a degree of polymerization of about 600 to about 2000 and containing 0 to about 5% by weight of a comonomer unit, (B) about 5 to about 20 parts by weight of an alkyl methacrylate resin, (C) about 5 to about 30 parts by weight of a liquid plasticizer, (D) about 10 to about 150 parts by weight of a pigment, and (E) 0 to about 10 parts by weight of at least one additive selected from the group consisting of lubricants and stabilizers. The film can be prepared by shaping the above-defined resin composition by calendering.
Inventors
- 👤 Masao Sahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:21
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/0029; Y; Y10; Y10S; Y10S264/00; Y10S264/73; Y10T; Y10T428/00; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
179 words
A process for preparing a destructible marking film having a thickness of about 30 to about 60 microns and a destructibility of not more than 60 kg.cm/mm, which comprises shaping a resin composition by calendering, said resin composition consisting essentially of (A) 100 parts by weight of a vinyl chloride resin having a degree of polymerization of about 600 to about 2000 and containing 0 to about 5% by weight of a comonomer unit, (B) about 5 to about 20 parts by weight of an alkyl methacrylate resin, which is a blend of an alkyl methacrylate polymer with an alkyl group containing 1 to 3 carbon atoms and an alkyl methacrylate polymer with an alkyl group containing 4 to 10 carbon atoms, or a copolymer of an alkyl methacrylate with an alkyl group containing 1 to 3 carbon atoms and an alkyl methacrylate with an alkyl group containing 4 to 10 carbon atoms, (C) about 5 to about 30 parts by weight of a liquid plasticizer, and (D) about 10 to about 150 parts by weight of a pigment.
Claim 2
Dependent Claim
179 words
A process for preparing a destructible marking film having a thickness of about 30 to about 60 microns and a destructibility of not more than 60 kg.cm/mm, which comprises shaping a resin composition by calendering, said resin composition consisting essentially of (A) 100 parts by weight of a vinyl chloride resin having a degree of polymerization of about 600 to about 2000 and containing 0 to about 5% by weight of a comonomer unit, (B) about 5 to about 20 parts by weight of an alkyl methacrylate resin, which is a blend of an alkyl methacrylate polymer with an alkyl group containing 1 to 3 carbon atoms and an alkyl methacrylate polymer with an alkyl group containing 4 to 10 carbon atoms, or a copolymer of an alkyl methacrylate with an alkyl group containing 1 to 3 carbon atoms and an alkyl methacrylate with an alkyl group containing 4 to 10 carbon atoms, (C) about 5 to about 30 parts by weight of a liquid plasticizer, and (D) about 10 to about 150 parts by weight of a pigment.
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein the as-formed film is quenched by a gaseous coolant having a temperature of not more than about 30° C.
Claim 4
Dependent Claim
43 words
The process of claim 1 wherein the as-formed film is stretched at a stretch ratio of 0 to about 50% expressed by the percentage of the surface linear speed of film take-up rolls based on the surface linear speed of film delivery rolls.
Claim 5
Independent Claim
178 words
A method for marking, which comprises applying to the surface of a substrate a destructible film having a thickness of about 30 to about 60 microns and a destructibility of not more than 60 kg.cm/mm, said film consisting essentially of (A) 100 parts by weight of a vinyl chloride resin having a degree of polymerization of about 600 to about 2000 and containing 0 to about 5% by weight of a comonomer unit, (B) about 5 to about 20 parts by weight of an alkyl methacrylate resin, which is a blend of an alkyl methacrylate polymer with an alkyl group containing 1 to 3 carbon atoms and an alkyl methacrylate polymer with an alkyl group containing 4 to 10 carbon atoms, or a copolymer of an alkyl methacrylate with an alkyl group containing 1 to 3 carbon atoms and an alkyl methacrylate with an alkyl group containing 4 to 10 carbon atoms, (C) about 5 to about 30 parts by weight of a liquid stabilizer, and (D) about 10 to about 150 parts by weight of a pigment.
Claim 6
Independent Claim
178 words
A method for marking, which comprises applying to the surface of a substrate a destructible film having a thickness of about 30 to about 60 microns and a destructibility of not more than 60 kg.cm/mm, said film consisting essentially of (A) 100 parts by weight of a vinyl chloride resin having a degree of polymerization of about 600 to about 2000 and containing 0 to about 5% by weight of a comonomer unit, (B) about 5 to about 20 parts by weight of an alkyl methacrylate resin, which is a blend of an alkyl methacrylate polymer with an alkyl group containing 1 to 3 carbon atoms and an alkyl methacrylate polymer with an alkyl group containing 4 to 10 carbon atoms, or a copolymer of an alkyl methacrylate with an alkyl group containing 1 to 3 carbon atoms and an alkyl methacrylate with an alkyl group containing 4 to 10 carbon atoms, (C) about 5 to about 30 parts by weight of a liquid stabilizer, and (D) about 10 to about 150 parts by weight of a pigment.
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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) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |