US4618527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Good machineability film structure
Assignee: Mobil Oil AS
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Filing: 1985-12-06
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Granted: 1986-10-21
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Expires: 2005-12-06
Abstract
Abstract A biaxially oriented film structure comprising (I) a comparatively thick base layer of a thermoplastic resin containing: an antistatic combination of (a) a compound of the formula RN(R1)2 wherein R is a C6-C24 alkyl group; R1 is H (OCH2CH2)n; n=1-25; and (b) a monoester of an aliphatic C2-C8 polyhydric alcohol and a C12-C24 fatty acid; and a slip improving proportion of (c) a C12-C24 fatty amide; and (II) a comparatively thin surface layer on at least one surface of (I), said surface layer comprising a thermoplastic resin containing an anti-block and COF reducing proportion of a finely divided inorganic material. This structure can be laminated to another film such as a polymeric film or a paper film such as glassine.
Inventors
- 👤 Rene H. Doyen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:50
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B2307/00; B32B2307/40; B32B2307/412; B32B2307/50; B32B2307/514; B32B2307/518; B32B2307/70; B32B2307/746; B32B2307/75; B32B2439/00; B32B2439/70; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31888; Y10T428/31891; Y10T428/31909; Y10T428/31913; Y10T428/31928
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
123 words
A biaxially oriented film structure comprising: (I) a comparatively thick base layer of a thermoplastic resin containing: an anti-static combination of (a) a compound of the formula RN(R 1 ) 2 , wherein R is a C 6 -C 24 alkyl group; R 1 is H (OCH 2 CH 2 ) n ; n=1-25; and (b) a monoester of an aliphatic C 2 -C 8 polyhydric alcohol and a C 12 -C 24 fatty acid; and a slip improving proportion of (c) a C 12 -C 24 fatty amide; and (II) a comparatively thin surface layer on at least one surface of (I), said surface layer comprising a thermoplastic resin containing an anti-block and COF reducing proportion of a finely divided inorganic material.
Claim 2
Dependent Claim
123 words
A biaxially oriented film structure comprising: (I) a comparatively thick base layer of a thermoplastic resin containing: an anti-static combination of (a) a compound of the formula RN(R 1 ) 2 , wherein R is a C 6 -C 24 alkyl group; R 1 is H (OCH 2 CH 2 ) n ; n=1-25; and (b) a monoester of an aliphatic C 2 -C 8 polyhydric alcohol and a C 12 -C 24 fatty acid; and a slip improving proportion of (c) a C 12 -C 24 fatty amide; and (II) a comparatively thin surface layer on at least one surface of (I), said surface layer comprising a thermoplastic resin containing an anti-block and COF reducing proportion of a finely divided inorganic material.
Claim 3
Dependent Claim
29 words
The structure of claim 1 wherein the combined anti-static effect of (a) and (b) is greater than that resulting from an equivalent weight of either (a) or (b) individually.
Claim 4
Dependent Claim
21 words
The structure of claim 2 wherein the thermoplastic resin of the base layer and of the surface layer is a polyolefin.
Claim 5
Dependent Claim
13 words
The structure of claim 3 wherein the polyolefin of said layers is polypropylene.
Claim 6
Dependent Claim
15 words
The composition of claim 4 wherein R is stearyl or a coco or tallow derivative.
Claim 7
Dependent Claim
11 words
The structure of claim 5 wherein said monoester is glycerol monostearate.
Claim 8
Dependent Claim
22 words
The structure of claim 1 wherein the inorganic material has a mean particle size of from about 0.2 to about 5.0 microns.
Claim 9
Dependent Claim
20 words
The structure of claim 7 wherein the thermoplastic resin of the base layer and of the surface layer are different.
Claim 10
Dependent Claim
24 words
The structure of claim 7 wherein the inorganic material is a member selected from the group consisting of an aluminum silicate; and mixtures thereof.
Claim 11
Dependent Claim
34 words
The structure of claim 9 wherein the surface layer of the oriented structure is in a thickness ranging from the thinnest continuous film possible to about 10% of the thickness of the overall structure.
Claim 12
Dependent Claim
13 words
The structure of claim 10 wherein said inorganic material is a sodium-aluminum silicate.
Claim 13
Dependent Claim
44 words
The structure of claim 1 wherein said thermoplastic resin is polypropylene (a) is N,N'-bis-(2-hydroxyethyl) stearyl amine, (b) is glycerol monostearate (c) is stearamide and said surface layer contains a member selected from the group consisting of an aluminum silicate, sodium-aluminum silicate and mixtures thereof.
Claim 14
Dependent Claim
9 words
The structure of claim 1 laminated to another film.
Claim 15
Dependent Claim
10 words
The structure of claim 1 laminated to a glassine film.
Claim 16
Dependent Claim
19 words
The structure of claim 14 wherein said glassine film is laminated to the structure by way of an adhesive.
Claim 17
Dependent Claim
10 words
The structure of claim 12 laminated to a glassine film.
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) | 1989-10-20 | 1990-04-21 | 1990-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-20 | 1994-04-21 | 1994-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-20 | 1998-04-21 | 1998-10-21 | $7700.00 | Window Closed / Lapsed |