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Water coating

A water-based coating and water-based composition technology, applied in coatings, polyurea/polyurethane coatings, building materials, etc., can solve the problem of casting resistance, low scratch resistance, increased thermal expansion or shrinkage, and warped floor materials. problem, to achieve the effect of excellent adhesion

Active Publication Date: 2012-08-01
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when the decorative material for flooring materials having the above-mentioned synthetic resin layer is laminated on wood to form the flooring material, since there must be a difference between the thermal expansion coefficients of the synthetic resin layer and the laminated wood, the synthetic resin The thermal expansion or contraction of one side of the layer and the wood increases, and the other side cannot follow, and the floor material warps
In order to reduce the difference in thermal expansion, it is conceivable to reduce the thickness of the synthetic resin layer, but if the synthetic resin layer is thinned, there will be problems such as poor casting resistance and scratch resistance.

Method used

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  • Water coating
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Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0115] Preparation of water-based paint

[0116] The components are compounded and mixed so that each component is an acrylic urethane resin (product name "boncoat CG-5000" Nippon Ink Chemical Industry, urethane / acrylic composite latex) and (product name "W- SF "Showa Ink Industry Co., Ltd.) about 30 parts by weight (resin component), coloring pigment about 9 weight%, extender pigment (silica) about 6 weight%, silicon 2 weight%, isopropyl alcohol 4 weight%, and water 49 weight %. In addition, isocyanate-based polyisocyanate was mixed with water at 1:1 (weight ratio) as a hardening agent, and 20 parts by weight were mixed with respect to 100 parts by weight of the aforementioned mixture. In this way, a water-based colored paint composed of water-based latex is obtained.

manufacture example 2

[0118] Manufacture of flooring materials

[0119] Originally manufactured decorative veneers.

[0120] (1) Making decorative sheets

[0121] Utilize the gravure coating method to coat the urethane cellulose resin (the mixture 100 weight parts of carbamate and digestive cotton adds the product that 5 weight parts of hexamethylene diisocyanate obtains) on the 60 μ m after corona discharge treatment on both sides. Thickness of one side of the colored polypropylene film, so that the solid content is 2g / m 2 , forming an inner primer layer. On the other side, acrylic urethane-based resin (a product obtained by adding 5 parts by weight of hexamethylene diisocyanate to 100 parts by weight of acrylic polyol) was applied by gravure coating to make the solid content 2g / m 2 , forming a primer layer for printing.

[0122] Then, an acrylic urethane resin (obtained by adding 5 parts by weight of hexamethylene diisocyanate to 100 parts by weight of acrylic polyol) was used as an adhesive...

Embodiment 1

[0134] Using the water-based paint obtained in Production Example 1, apply it to the entire surface of the V-shaped grooves and chamfers of the floor material in Production Example 2, and perform degaussing treatment at the same time, thereby forming a coating on the grooves and chamfers. layer.

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Abstract

The invention provides a coating effective for woody materials as well as synthetic resins. In particular, the invention provides a water-based coating for protecting at least the surface exposing both of a synthetic resin and a woody material in a laminate produced by laminating at least the synthetic resin and the woody material is composed of a water-based composition containing an acrylic urethane resin.

Description

technical field [0001] The present invention relates to a water-based paint used for imparting water resistance to floor materials such as houses. Background technique [0002] Known existing floor materials include those formed by gluing a wooden decorative veneer on a plywood for finishing, and those made by gluing a wooden decorative veneer on a plywood and laminating a medium-density fiberboard (MDF) The surface of the above-mentioned medium density fiberboard is painted and formed. In addition, groove processing and chamfering are performed from the side of the wooden decorative veneer to the depth of the plywood or medium density fiberboard (MDF), and grooves and chamfers are provided to improve appearance. [0003] However, the wooden decorative veneer obtained by slicing solid natural wood into thin boards has become expensive due to the depletion of wood resources or the promotion of global resource conservation movements, and at the same time, its quality is also ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/02C09D175/04E04C2/10C09D175/06B32B33/00
CPCB32B27/40B32B33/00C09D5/00C09D5/022C09D175/14
Inventor 松川康宏增田洋史土井孝志竹本正孝
Owner DAI NIPPON PRINTING CO LTD