JP2005120585A - Water resistant plastic floor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decoration material capable of being simply applied with a waterproofing process by applying a water repellent coat layer and a hydrophilic coat layer when laminating a thermoplastic plastic decoration seat, and having concurrently an excellent design and recyclability, in an architectural interior material such as floor materials, wall materials, ceiling materials, etc. <P>SOLUTION: After wood flour has been at least added to a thermoplastic synthetic resin and molded, the fitting part where the thermoplastic synthetic resin decoration seat is laminated has a four sided shiplap type. In the resin base material 11 in which a return is provided at the shiplap end, a water repellent coat layer 18 in which the contact angle of water at the abutting part of the four sided shiplap part is at least 100 degree is provided. A hydrophilic coat layer 19 in which the contact angle of water is not more than 85 degree is provided. The water repellant layer 18 comprises two liquid type curable silicone modified resin. The water repellent layer 18 and the hydrophilic coat layer 19 is coated when lapping the decoration sheet 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  In building interior materials such as floor materials, wall materials, and ceiling materials, water-repellent coating layer and hydrophilic coating layer can be applied easily when waterproofing a thermoplastic resin decorative sheet, and it can be easily waterproofed. The present invention relates to a decorative material having both design and recyclability.

  Conventionally, water around the house such as kitchens, washrooms, dressing rooms, etc. is always exposed to a moist environment, and it is splashed with water. The flooring was difficult to use.

  For this reason, many homes use cushion floors around the water.

  However, with increasing consumer awareness of interior decoration in recent years and the appearance of dining integrated with the kitchen, flooring tends to be required.

  For this reason, water resistance is also required for flooring, and a water-resistant floor in which a resin-based decorative sheet is stuck on a plywood has been put to practical use.

  However, the above water-resistant floor is less likely to cause blisters and stains due to water absorption from the surface and the end of the floor compared to the normal flooring, but the grooves and fitting parts made by post-processing have plywood on the surface, and water resistance is sufficient I couldn't say that.

  Therefore, resin-based flooring using wood powder-containing polypropylene resin as the base material and laminated with a thermoplastic resin decorative sheet has come out, but it is under the resin-based flooring due to water soaking from the fitting part. The wood base and joists of the underlay could be rotted.

Prior art document information.
JP 2003-97011 A

  In building interior materials such as floor materials, wall materials, and ceiling materials, water-repellent coating layer and hydrophilic coating layer can be applied easily when waterproofing a thermoplastic resin decorative sheet, and it can be easily waterproofed. Provide cosmetic materials that have both design and recyclability.

  At least after adding wood powder to a thermoplastic synthetic resin and molding it, the fitting part formed by laminating the thermoplastic resin decorative sheet is a four-sided phase-out shape, and a barb is provided at the end of the phase-out A waterproof resin floor characterized in that a water-repellent coating layer having a water contact angle of 100 degrees or more is provided at the abutting portion of the four-way interphase portion in the resin-based substrate.

  A waterproof resin floor comprising a hydrophilic coat layer having a contact angle of 85 degrees or less adjacent to the water repellent coat layer.

  The waterproof resin floor, wherein the water repellent coating layer is a two-component curable silicone modified resin.

  A waterproof resin floor, wherein the water-repellent coating layer and the hydrophilic coating layer are coated when a decorative sheet is wrapped.

  According to the present invention, when a wood-powder-added thermoplastic resin is formed into a plate shape having a phased fit, and a decorative sheet is laminated by lapping, the contact angle of water is 100 at the abutting portion of the four-way phase contact portion. Applying a water-repellent coating layer that is at least 80 ° C, and further providing a hydrophilic coating layer with a contact angle of 85 ° or less around it is equivalent to a normal flooring. It was possible to obtain a flooring material having a design property and having water resistance from the base material.

  In this resin decorative member, not only the base material itself is water resistant, but also the fitting part between the base materials is closely fitted and fitted with an inverted gap with an arbitrary gap, and The water repellent coating layer repels water, and the hydrophilic coating layer moves water from the fitting portion around the water repellent coating layer, so that it is possible to provide waterproof performance as a surface after construction.

  There is no particular limitation on the molding method of the resin base material, and any three-dimensional molding method such as injection molding, dysmorphic molding, and rotational molding is possible. However, there is a dysmorphic molding method that is suitable for long molding and can be produced continuously. Is preferred.

  With the dysmorphic method, it is possible to create an unlimited number of members in theory, and it is possible to eliminate the top-and-bottom fitting that was necessary in the past, and the fitting that is the main route through which water penetrates the substrate The number of parts can be reduced without limit.

  The resin base material is adjusted so that an arbitrary gap is formed between the base materials when the base materials are fitted to each other.

  The gap between the substrates prevents the fitting from being hindered by the thickness of the decorative sheet, and further adjusts the hardness of the fitting.

  The material used for the decorative sheet is not particularly limited as long as it has water resistance, but from the viewpoint of recycling, it is desirable that the material is printed on the same resin film as the resin base material.

  In the conventional wooden flooring, the processing of the sash for fitting the flooring materials is performed by cutting with a tenoner. For this reason, the fitting shape which provided the return | turnback in the sun was not made.

  Since the wood-based resin decorative member of the present invention is an extrusion profile molding, it is possible to provide a barb having a shape that could not be achieved conventionally.

  A wood powder mixed resin pellet was prepared by mixing and pelletizing 90 parts by weight of a homopolypropylene resin and 10 parts by weight of a maleic acid-modified polypropylene with 40 parts by weight of a wood additive using a twin-screw extrusion kneader.

  This wood powder mixed resin pellet was extruded into a floor material shape having a cross section of 5 mm × 157 mm and having a phased fitting portion by a profile extrusion molding method.

At the same time as or after laying an olefin-based decorative sheet having a thickness of 0.25 mm on this resin base material by a lapping method using a one-component moisture-curing urethane resin-based hot melt adhesive, 30 parts by weight of a two-part curable silicone modified resin (main agent full shade U-311: curing agent full shade U311NL = 100: 17 manufactured by Toyo Ink Manufacturing Co., Ltd.) is added to 100 parts by weight of an ultraviolet curable resin as a coating layer and dried. After a subsequent coating amount of 6 g / m ^{2 was} applied, the film was cured by irradiating ultraviolet rays with a mercury lamp.

Further, a known titanium oxide photocatalyst was applied at a peripheral portion of the water-repellent coating layer on the surface of the substrate, and a coating amount after drying of 3 g / m ^{2 was} applied and dried.

  Next, an EVA-based (ethylene-vinyl acetate copolymer resin) cushion material having a thickness of 2 mm was laminated on the back surface to obtain a waterproof resin floor.

<Comparative example>
Example 1 is the same as Example 1 except that there is no water repellency and hydrophilic coating.

<Test results>

Water permeability test at 20 ° C (fitting part)
Example 1 ○
Comparative Example 1 ×
-The water permeability test conforms to JIS A 6909.

  ○: Decrease in water head is 5 mm or less.

  (Triangle | delta): The fall amount of a water head is 5 mm or more and 150 mm or less.

  X: The drop amount of the water head is 150 mm or more.

The schematic cross section of the waterproof resin floor of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waterproof resin floor 11 Resin base material 12 Decorative sheet 13 Phase notch 14 Return 15 Clearance 16 Rubber elastic body 17 Rubber elastic body 18 Water repellent coating layer 19 Hydrophilic coating layer 2 Base material

Claims (4)

  At least after adding wood powder to a thermoplastic synthetic resin and molding it, the fitting part formed by laminating the thermoplastic resin decorative sheet is a four-sided phase-out shape, and a barb is provided at the end of the phase-out A waterproof resin floor characterized in that a water-repellent coating layer having a water contact angle of 100 degrees or more is provided at the abutting portion of the four-way interphase portion in the resin-based substrate.   The waterproof resin floor according to claim 1, wherein a hydrophilic coat layer having a contact angle of 85 degrees or less is provided next to the water repellent coat layer.   3. The waterproof resin floor according to claim 1, wherein the water repellent coating layer is a two-component curable silicone modified resin.   4. The waterproof resin floor according to claim 1, wherein the water-repellent coating layer and the hydrophilic coating layer are coated when the decorative sheet is wrapped.

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