Claims
- 1. A laminate film comprising:at least one base layer; at least one inorganic laminar compound-containing layer on said at least one base layer, wherein said inorganic compound containing layer comprises, as a mixture: (a) a polyvinyl alcohol having a saponification degree of not of not less than 70% based on mole percent, and (b) an inorganic laminar compound having an aspect ratio of 200 to 3000, which has a volume ratio of inorganic laminar compound/polyvinyl alcohol in the range of 5/95 to 30/70, wherein said inorganic laminar compound is an inorganic compound having a layered crystal structure wherein unit crystal layers are mutually stacked to form said layered structure, and said inorganic laminar compound is swollen or cleft when in a solvent; and a non-oriented polypropylene film laminated onto said at least one inorganic laminar compound-containing layer.
- 2. A laminate film comprising:at least one base layer; an inorganic laminar compound-containing layer on said at least one base layer, wherein said inorganic laminar compound-containing layer comprises, as a mixture, (a) a polyvinyl alcohol having a saponification degree of not less than 70% based on mole percent, and (b) an inorganic laminar compound having an aspect ratio of 200 to 3000, which has a volume ratio of inorganic laminar compound/polyvinyl alcohol in the range of 5/95 to 30/70, wherein said inorganic laminar compound is an inorganic compound having a layered crystal structure wherein unit crystal layers are mutually stacked to form said layered structure, is swollen or cleft when in a solvent, and exhibits an oxygen permeability of not more than 0.5 cc/m2·day·atm under the condition of 30° C. and 60% relative humidity; and a non-oriented polypropylene film laminated onto said at least one inorganic laminar compound-containing layer.
- 3. The laminate film according to claim 1 or 2, wherein said non-oriented polypropylene film is dry-laminated onto the inorganic laminar compound-containing layer of said laminate film.
- 4. The laminate film according to claim 1 or 2, wherein said inorganic laminar compound-containing layer is formed by applying a coating liquid containing the mixture onto a surface of said base layer and then drying the resultant coating.
- 5. The laminate film according to claim 2, wherein said inorganic laminar compound-containing layer of said laminate film is formed and then laminated onto the base material.
- 6. The laminate film according to claim 2, wherein said base material is extrusion-laminated onto the inorganic laminar compound-containing layer of said laminate film.
- 7. The laminate film according to claim 1 or 2, wherein said polyvinyl alcohol has a degree of saponification of not less than 85% based on mole percent.
- 8. The laminate film according to claim 7, wherein the degree of saponification is not less than 98%.
- 9. The laminate film according to claim 1 or 2, wherein the polyvinyl alcohol has a degree of polymerization of 200 to 3000.
- 10. The laminate film according to claim 1 or 2, wherein the aspect ratio is not more than 2000.
- 11. The laminate film according to claim 1 or 2, wherein the volume ratio of inorganic laminar compound/polyvinyl alcohol is 7/93 to 17/83.
Priority Claims (2)
Number |
Date |
Country |
Kind |
6-006013 |
Jan 1994 |
JP |
|
6-006470 |
Jan 1994 |
JP |
|
Parent Case Info
This is a continuation of application Ser. No. 08/525,620, filed on Sep. 22, 1995 now abandoned, which is a 371 of international application PCT/JP95/00072, filed Jan. 24, 1995.
US Referenced Citations (29)
Foreign Referenced Citations (8)
Number |
Date |
Country |
1-043554 |
Feb 1989 |
JP |
A-62-148532 |
Jul 1989 |
JP |
A-01-313356 |
Dec 1989 |
JP |
3-030944 |
Feb 1991 |
JP |
A-3-93542 |
Apr 1991 |
JP |
4323244 |
Nov 1992 |
JP |
A-05-39392 |
Feb 1993 |
JP |
0128734 |
Aug 1982 |
JP |
Non-Patent Literature Citations (1)
Entry |
Chemical Abstracts, 123 (No. 6) Abstract No. 58164) (JP-A-07-041685 (Aug. 7, 1995). |
Continuations (1)
|
Number |
Date |
Country |
Parent |
08/525620 |
|
US |
Child |
08/939951 |
|
US |