Tank manufacturing method and tank

Patent metadata

Field	Value
Publication number	US-10632836-B2
Application number	US-201815915463-A
Country	US
Kind code	B2
Filing date	Mar 8, 2018
Priority date	Apr 7, 2017
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

A tank manufacturing method includes the steps of (a) forming a reinforcing layer before hardening, (b) embedding at least a part of a label into the reinforcing layer before hardening, and (c) winding glass fiber with thermosetting resin before hardening impregnated so as to cover the label to form a surface layer before hardening. The step (a) includes (a1) forming an inner layer before hardening, and (a2) forming an outer layer before hardening having a cover rate lower than the inner layer before hardening and lower than 100%, the outer layer before hardening being arranged on the inner layer before hardening.

First claim

What is claimed is:

1. A tank manufacturing method, comprising:
(a) winding fiber impregnated with a thermosetting resin on a liner to form a reinforcing layer before hardening;
(b) embedding at least a part of a label into the reinforcing layer before hardening;
(c) winding glass fiber impregnated with a thermosetting resin before hardening so as to cover the label to form a surface layer before hardening, wherein
(a) comprises:
(a1) forming an inner layer before hardening, and
(a2) forming an outer layer before hardening that has a cover rate lower than the inner layer before hardening and lower than 100%, the cover rate being a percentage of a volume occupied by the fiber impregnated with the thermosetting resin in a space of the reinforcing layer before hardening, and that is arranged on the inner layer before hardening, and
(b) comprises:
(b1) arranging the label on the reinforcing layer before hardening, and
(b2) embedding at least a part of the label into the reinforcing layer before hardening with the glass fiber wound on the label at (c), wherein
(b2) comprises making tension added to the glass fiber when the glass fiber is wound on the label higher than tension added to the glass fiber when the glass fiber is wound on another part different from the label.

2. The tank manufacturing method in accordance with claim 1 , wherein a thickness of the outer layer before hardening formed in (a2) is larger than a thickness of the label.

3. The tank manufacturing method in accordance with claim 1 , wherein
(b) is embedding the label into the reinforcing layer before hardening until a surface of the label is positioned on a substantially same surface as a surface of a surrounding reinforcing layer before hardening positioned around the label embedded in the reinforcing layer before hardening.

4. The tank manufacturing method in accordance with claim 1 , wherein the label embedded in the reinforcing layer before hardening by (b) is formed of metal.

5. The tank manufacturing method in accordance with claim 1 , wherein the outer layer before hardening is formed by a combination of helical winding and hoop winding.

Assignees

• Toyota Motor Co Ltd

Inventors

• Ueda Naoki

Classifications

• F17C2203/0604

  Liners · CPC title

• B60K2015/03032

  Manufacturing of fuel tanks · CPC title

• B29C53/005

  characterised by the choice of material (B29C53/36 and B29C53/56 take precedence) · CPC title

• F17C2203/012

  on or in the wall, e.g. ribs · CPC title

• B60K2015/03046

  made from more than one layer · CPC title