Pretreatment methods for painting or printing
A treatment method, a technology of flame treatment, applied in the direction of pre-treatment surface, printing, copying/marking method, etc., which can solve the problems of poor productivity, etc.
Inactive Publication Date: 2021-04-06
NISSHIN STEEL CO LTD
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Problems solved by technology
[0008] In addition, the coating surface of a coated steel plate such as a hot-dip Zn-55% Al alloy steel plate is clean immediately after coating, so the paint or printing ink can be sufficiently adhered, but there is the following problem: After a few hours to a few days, the extremely fine organic waste in the air will adhere to the metal surface, so that the paint or printing ink will not adhere sufficiently
Poor productivity when manufacturing or handling metal-based substrates such as building materials in a batch manner
Method used
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Embodiment
[0108] Examples and test examples are given below to describe the present invention more specifically, but the present invention is not limited thereto.
[0109] As metal-based substrates, austenitic stainless steel sheets, painted steel sheets, ferritic stainless steel sheets, hot-dip Zn-55%Al alloy-plated steel sheets, and aluminum alloy sheets were used. As a reference substrate, acrylic sheets were used.
[0110] 1. Preparation of various substrates
[0111] (1) Austenitic stainless steel plate
[0112] SUS304BA with a plate thickness of 0.5 mm manufactured by Nisshin Steel Works was cut into A4 size and used.
[0113] (2) Coated steel plate
[0114] The thickness of the plate is 0.5mm, and the amount of coating on each side of A4 size is 90g / m 2 Hot-dipped Zn-55% Al alloy steel plate. Alkaline degreasing is carried out to this plated steel plate, then, the mode that with dry film thickness is 5 μ m is coated with coating type chromate (NRC300NS: Nippon Paint Co., Ltd....
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Abstract
The problem of the present invention is to find a treatment to suppress the generation of dew condensation when the surface of a specific metal-based substrate having a thermal conductivity of 10 W / mK or more is flame-treated, and to perform the treatment and the flame treatment continuously. In order to solve the above problems, the present invention provides a treatment method before coating or printing the surface of the metal-based substrate, which includes: using paint or ink on a specific metal-based substrate with a thermal conductivity of 10 W / mK or more Before the surface is painted or printed, after the substrate is preheated to above 40°C, the surface of the substrate is continuously flame-treated.
Description
technical field [0001] The present invention relates to a pretreatment method for coating or printing the surface of a metal-based base material (with a thermal conductivity of 10 W / mK or more) having specific characteristics with resin-containing paint or ink. Background technique [0002] Conventionally, it has been done to increase added value by improving functionality and design by using resin-containing coatings or inks on metal-based substrates. With the technological development in recent years, higher functionality and design diversity are required, and high-precision painting and printing technologies are required. [0003] Before coating or printing on the surface of the substrate, when there is foreign matter such as dirt and dust on the surface of the substrate, the adhesion and wettability of the paint or ink to the substrate will decrease, and satisfactory coating cannot be performed. packaging or printing. [0004] In Patent Document 1, a method for acceler...
Claims
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IPC IPC(8): B05D3/08B05D7/14B05D7/24C23C26/00B05C9/14
CPCB05D7/14B05D7/24B05C9/14C23C26/00B41M5/0011B41M5/0047B41M5/0058B41M5/52B41M5/5272B05D3/08B05D3/06B41J2/01C09D11/30C09D11/101B05D2202/15B05D2202/25B05D3/0218B05D7/144
Inventor 佐藤正树铃木成寿平工大杉田修一
Owner NISSHIN STEEL CO LTD