US4252853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Destructible marking film, process for its production and method for marking
Assignee: Nippon Carbide Industries Co Inc
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Filing: 1978-10-17
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Granted: 1981-02-24
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Expires: 1998-10-17
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 plasticizers, (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
2026-10-26 21:25
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/0029; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
170 words
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 comprising: (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 the alkyl group containing 1 to 3 carbon atoms and an alkyl methacrylate polymer with the alkyl group containing 4 to 10 carbon atoms, or a copolymer of an alkyl methacrylate with the alkyl group containing 1 to 3 carbon atoms and an alkyl methacrylate with the 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
170 words
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 comprising: (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 the alkyl group containing 1 to 3 carbon atoms and an alkyl methacrylate polymer with the alkyl group containing 4 to 10 carbon atoms, or a copolymer of an alkyl methacrylate with the alkyl group containing 1 to 3 carbon atoms and an alkyl methacrylate with the 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
33 words
The film of claim 1 wherein the comonomer unit of resin (A) is selected from the group consisting of ethylene, propylene, butene, vinyl acetate, alkyl acrylates, vinylidene chloride, vinyl esters and vinyl ethers.
Claim 4
Dependent Claim
28 words
The film of claim 1 which additionally contains up to 10 parts by weight of at least one additive selected from the group consisting of lubricants and stabilizers.
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) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |