Method for forming parting line

Patent metadata

Field	Value
Publication number	US-11878313-B2
Application number	US-202217945217-A
Country	US
Kind code	B2
Filing date	Sep 15, 2022
Priority date	Sep 28, 2021
Publication date	Jan 23, 2024
Grant date	Jan 23, 2024

Abstract

A method for forming a parting line in a coating using an easily peelable coating material comprising (i) attaching a masking tape to a part not to be coated on a boundary between a part to be coated and the part not to be coated along the boundary; (ii) performing a process to improve an adhesiveness with an easily peelable coating material on surfaces of a part in contact with the boundary of the part to be coated and/or a part in contact with the boundary of the masking tape; (iii) applying the easily peelable coating material over surfaces of the part to be coated and the part in contact with the boundary of the masking tape; and (iv) peeling off the masking tape.

First claim

What is claimed is:

1. A method for forming a parting line in a coating using an peelable coating material, the method comprising:
(i) attaching a masking tape on a part not to be coated on a boundary between a part to be coated and the part not to be coated, along the boundary;
(ii) performing a process to improve an adhesiveness with the peelable coating material on a surface of a part in contact with the boundary of the part to be coated and/or a part in contact with the boundary of the masking tape;
(iii) applying the peelable coating material over surfaces of the part to be coated and the part in contact with the boundary of the masking tape; and
(iv) peeling off the masking tape, wherein
the process of improving the adhesiveness with the peelable coating material is a roughening process performed on only the surface, of the part, in contact with the boundary of the masking tape.

2. The method according to claim 1 ,
wherein the step (iii) includes half-hardening or hardening the peelable coating material and cooling the peelable coating material.

3. The method according to claim 1 ,
wherein in the step (iv), the masking tape is peeled off along the parting line in a pull direction of from 160° to 200° with a pull angle of from 160° to 180°.

4. The method according to claim 1 , wherein
the part in contact with the boundary of the masking tape is formed by the masking tape.

Assignees

• Toyota Motor Co Ltd

Inventors

• Yamamoto Junya
• Kimura Tsuyoshi
• Kizaki Kentaro

Classifications

• B05B12/24 Primary

  made at least partly of flexible material, e.g. sheets of paper or fabric · CPC title

• B05D1/325

  Masking layer made of peelable film · CPC title

• B05D3/12

  by mechanical means · CPC title

• B05D7/14

  to metal, e.g. car bodies (involving a chemical reaction between the metal and the coating C23) · CPC title

• B05D7/16

  using synthetic lacquers or varnishes · CPC title