US4654252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Good machineability film structure
Assignee: Mobil Oil AS
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Filing: 1986-03-03
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Granted: 1987-03-31
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Expires: 2006-03-03
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 optionally 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 18:51
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
109 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 (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
109 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 (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
23 words
The structure of claim 1 wherein the base layer also includes a slip improving proportion of a C 12 -C 24 fatty amide.
Claim 4
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 5
Dependent Claim
21 words
The structure of claim 3 wherein the thermoplastic resin of the base layer and of the surface layer is a polyolefin.
Claim 6
Dependent Claim
13 words
The structure of claim 4 wherein the polyolefin of said layers is polypropylene.
Claim 7
Dependent Claim
15 words
The composition of claim 5 wherein R is stearyl or a coco or tallow derivative.
Claim 8
Dependent Claim
11 words
The structure of claim 6 wherein said monoester is glycerol monostearate.
Claim 9
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 10
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 11
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 12
Dependent Claim
34 words
The structure of claim 10 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 13
Dependent Claim
13 words
The structure of claim 11 wherein said inorganic material is a sodium-aluminum silicate.
Claim 14
Dependent Claim
47 words
The structure of claim 2 wherein said thermoplastic resin is polypropylene (a) is N,N'-bis-(2-hydroxyethyl) stearyl amine, (b) is glycerol monostearate, and said fatty amide 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 15
Dependent Claim
9 words
The structure of claim 1 laminated to another film.
Claim 16
Dependent Claim
10 words
The structure of claim 1 laminated to a glassine film.
Claim 17
Dependent Claim
22 words
The structure of claim 15 wherein said glassine paper is laminated to the structure of claim 1 by way of an adhesive.
Claim 18
Dependent Claim
10 words
The structure of claim 13 laminated to a glassine film.
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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |