Pretreatment method for coating or printing

Patent metadata

Field	Value
Publication number	US-2018154391-A1
Application number	US-201615577367-A
Country	US
Kind code	A1
Filing date	Jun 8, 2016
Priority date	Jun 8, 2015
Publication date	Jun 7, 2018
Grant date	—

Abstract

A method for treating a metal substrate surface before coating or printing thereof, the method including preheating to 40° C. or above a specific metal substrate having a thermal conductivity of 10 W/mK or higher, and thereafter performing a flame treatment on the substrate surface, prior to coating or printing of the surface of the substrate with a coating material or an ink.

First claim

1 . A method for treating a metal substrate surface before coating or printing thereof, the method comprising: preheating to 40° C. or above a metal substrate having a thermal conductivity of 10 W/mK or higher and selected from among plated steel sheet, stainless steel sheet, coated steel sheet, aluminum sheet, copper sheet and degreased ordinary steel sheet, and thereafter performing a flame treatment on the substrate surface, prior to coating or printing of the surface of the substrate with a coating material or an ink.

2 . The treatment method of claim 1 , wherein the substrate is selected from among plated steel sheet, stainless steel sheet, coated steel sheet, aluminum sheet and copper sheet.

3 . The treatment method of claim 1 , wherein the substrate is preheated to 50° C. or above.

4 . The treatment method of claim 1 , wherein the substrate is preheated to 60° C. or above.

5 . The treatment method of claim 1 , wherein preheating is carried out in such a manner that the temperature of the substrate does not exceed 300° C.

6 . The treatment method of claim 1 , wherein the substrate is subjected to the flame treatment using one or two gas burners.

7 . The treatment method of claim 1 , wherein the substrate is a coated steel sheet.

8 . The treatment method of claim 7 , wherein printing performed on the surface of the coated steel sheet is inkjet printing.

9 . The treatment method of claim 8 , wherein the inkjet printing is carried out using an actinic-ray curable ink.

10 . The treatment method of claim 1 , wherein occurrence of condensation derived from the flame of a gas burner used in the flame treatment is suppressed.

11 . A method for suppressing occurrence of condensation derived from the flame of a gas burner, the method comprising: bringing the temperature of a metal substrate during a flame treatment, which is performed by a gas burner prior to coating or printing of the surface of the metal substrate with a coating material or an ink, to 40° C. or above through preheating, the metal substrate having a thermal conductivity of 10 W/mK or higher and being selected from among plated steel sheet, stainless steel sheet, coated steel sheet, aluminum sheet, copper sheet and degreased ordinary steel sheet.

Assignees

• Nisshin Steel Co Ltd

Inventors

• Satou Masaki
• Suzuki Seiju
• Hiraku Masaru
• Sugita Shuichi

Classifications

• B05D3/08 Primary

  by flames · CPC title

• B05D7/14

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

• B05D7/24

  for applying particular liquids or other fluent materials · CPC title

• B41M5/0058

  on metals and oxidised metal surfaces · CPC title

• B41M5/0011 Primary

  Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating (after-treatment of prints B41M7/00; printers for treating or overcoating copy materials before, during or after printing B41J11/0015) · CPC title