1. A process for producing an optically anisotropic film, wherein the following steps are carried out in order:
(1) a step of applying a composition for forming an optically anisotropic film, the composition comprising a liquid crystal compound and a solvent, to a substrate,
(2) a step of conveying the applied composition for forming an optically anisotropic film to a drying furnace under an environment with an air speed of 0.01 ms to 0.2 ms, and
(3) a step of removing the solvent by applying a 1 ms or higher hot air to the applied composition for forming, an optically anisotropic film in the drying furnace.
2. The process for producing an optically anisotropic film according to claim 1, wherein a time required from the application of the composition for forming an optically anisotropic film in step (1) up to the application of the hot air in step (3) is from 2 seconds to 5 minutes.
3. The process for producing an optically anisotropic film according to claim 1, wherein an orientation film is formed on a surface of the substrate.
4. The process for producing an optically anisotropic film according to claim 1, wherein the substrate has a protective film on a surface reverse to the surface on which the composition for forming an optically anisotropic film is applied.
5. The process for producing an optically anisotropic film according to claim 1, wherein the substrate is an elongated film roll.
6. An optically anisotropic film obtained by the process for producing an optically anisotropic film according to claim 1.
7. The optically anisotropic film according to claim 6, wherein the liquid crystal compound is in vertical orientation.
8. The optically anisotropic film according to claim 6 for use in an IPS (in-plane switching) liquid crystal display device.
9. A retardation film comprising the optically anisotropic film according to claim 6.
10. A polarization plate comprising the optically anisotropic film according to claim 6.
11. A display device comprising the optically anisotropic film according to claim 6.
12. The process for producing an optically anisotropic film according to claim 2, wherein an orientation film is formed on a surface of the substrate.
13. The optically anisotropic film according to claim 7 for use in an IPS (in-plane switching) liquid crystal display device.
14. A retardation film comprising the optically anisotropic film according to claim 7.
15. A polarization plate comprising the optically anisotropic film according to claim 7.
16. A display device comprising the optically anistropic film according to claim 7.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A disposable diaper comprising a liquid-pervious topsheet, a liquid-impervious backsheet and a liquid-absorbent core disposed between these two sheets so as to configure a front waist region, a rear waist region and a crotch region extending between these two waist regions in a longitudinal direction of the diaper wherein said rear waist region is formed on transversely opposite side portions thereof with wings extending outward in a circumferential direction intersecting said longitudinal direction and said wings are formed with fastener sections extending outward in said circumferential direction and provided on inner surfaces thereof with male members as components of so-called mechanical fasteners, wherein:
each of said wings has inner and outer surfaces of which at least said inner surface is defined by a nonwoven fabric; and
said nonwoven fabric is formed with a plurality of fine depressions in such a distribution that the number of said fine depressions per unit area of said wing is less in a region to be engaged with said male member than in the remining region of said wing.
2. The diaper according to claim 1, wherein said region destined to come in contact with said male member and the vicinity thereof are surrounded by said remaining region in which a relatively large number of said fine depressions are formed.
3. The diaper according to claim 1, wherein component fibers of said nonwoven fabric are fused together in said fine depressions.
4. The diaper according to claim 1, wherein the component fibers of said nonwoven fabric are more densely gathered in said fine depressions than in the regions respectively surrounding said fine depressions.
5. The diaper according to claim 1, wherein each of said wings comprises inner side nonwoven fabric defining the inner surface of said wing and outer side nonwoven fabric defining the outer surface of said wing, said inner and outer side nonwoven fabrics being bonded together at said fine depressions.