Device for manufacturing uneven-thickness film, and method for manufacturing uneven-thickness film

Patent metadata

Field	Value
Publication number	US-10427335-B2
Application number	US-201415103512-A
Country	US
Kind code	B2
Filing date	Nov 20, 2014
Priority date	Dec 20, 2013
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

The manufacturing device is provided with a first roller and a second roller for molding an uneven-thickness film. The first roller is provided with a truncated-cone-shaped portion and a disc-shaped portion, the diameter of the disc-shaped portion is larger than the diameter of a large-diameter face of the truncated-cone-shaped portion, and the second roller is provided with a column-shaped portion. A thick part is formed in a molded body of the uneven-thickness film between the truncated-cone-shaped portion of the first roller and the column-shaped portion of the second roller, and a thin connecting part is formed in the molded body between the disc-shaped portion of the first roller and the column-shaped portion of the second roller.

First claim

The invention claimed is:

1. A device for manufacturing an uneven-thickness film comprising a first roller and a second roller for molding the uneven-thickness film, wherein:
the first roller comprises a column-shaped portion and a disc-shaped portion; the second roller comprises a truncated-cone-shaped portion and a disc-shaped small-diameter portion;
the disc-shaped small-diameter portion having a diameter the same as a smaller-diameter face side of the truncated-cone-shaped portion;
the disc-shaped small-diameter portion smoothly connects with the truncated-cone-shaped portion on the smaller-diameter face side of the truncated-cone-shaped portion; and
a circumferential surface of the disc-shaped portion opposes a circumferential surface of the disc-shaped small-diameter portion and a thickness of the disc-shaped portion is substantially the same as a thickness of the disc-shaped small-diameter portion.

2. The manufacturing device according to claim 1 , wherein:
the manufacturing device forms:
a thick part to the molded body of the uneven-thickness film between the column-shaped portion of the first roller and the truncated-cone-shaped portion of the second roller; and
a thin connecting portion to the molded body between the disc-shaped portion of the first roller and the disc-shaped small-diameter portion of the second roller.

3. The manufacturing device according to claim 1 , wherein portions where the disc-shaped portion of the first roller opposes the disc-shaped small-diameter portion of the second roller are substantially parallel.

4. The manufacturing device according to claim 1 , wherein:
the truncated-cone-shaped portion is a pair of truncated-cone-shaped portions; and
the pair of truncated-cone-shaped portions are symmetrically arranged to sandwich the disc-shaped small-diameter portion.

5. The manufacturing device according to claim 1 , wherein the column shaped portion and the disc-shaped portion of the first roller or the truncated-cone-shaped portion and the disc-shaped small-diameter portion of the second roller are integrally arranged on the same axis.

6. The manufacturing device according to claim 1 , wherein the second roller further comprises a column-shaped portion.

7. The manufacturing device according to claim 6 , wherein the column-shaped portion of the second roller is connected with the larger-diameter face of the truncated-cone-shaped portion of the second roller.

Assignees

• Mitsubishi Gas Chemical Co
• Mgc Filsheet Co Ltd

Inventors

• Akita Reiki

Classifications

• B29C2043/466

  the rollers having specific shape, e.g. non cylindrical rollers, conical rollers · CPC title

• G02B6/002

  by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces · CPC title

• B29C48/0011 Primary

  combined with compression moulding · CPC title

• B29K2995/0026

  Transparent · CPC title

• B29C48/08

  flexible, e.g. films · CPC title