JPH11173013A - Window sill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily stick a decorative board on a base material for a window sill and cover it therewith to improve appearance, surface hardness, weather resistance, etc., by integrally laminating decorative paper, nonwove fabric, and converted paper one after another with a thermosetting resin to form a decotative board. SOLUTION: Decoration paper 11 impregnated with a thermosetting resin chiefly containing a melamine resin, nonwoven fabric 12 impregnated with the thermosetting resin, and converted paper 13 are laminated one after another and integrally formed by hot-pressing to form a thermosetting resin decoration board 1 having 0.2-0.5 mm thickness. A base material 3 for a window sill is processed in advance to form a required shape and the base material 3 for the window sill is covered with the thermosetting resin decoration board 1 through a sticking processing while carrying out postforming (after-bending processing) of the thermosetting resin decoration board 1 by using an adhesive 2. In this way, the thermosetting resin decoration board 1 is easily stuck on the base material 3 for the window sill to coat it through a bending process and a satisfied window sill in appearance, surface hardness, weather resistance, abrasion-resistance, shock-resistance, waterproofness, etc., can be constituted and it is used as a window sill (bay window) on which flower pots or the like can be placed under a window.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a window sill covered with a decorative material having excellent surface properties.

[0002]

2. Description of the Related Art Conventionally, a window stand (bay window) for placing a flower pot or the like under a window of a building has been made of a wooden frame, a metal frame, a natural stone,
It was composed of the base material of the building itself, such as a concrete frame. However, in recent years, window stands in which the surface of a base material is covered with a decorative material for the purpose of adding decorativeness have been studied.

[0003] As window window decorative materials, there are thermoplastic resin sheets represented by vinyl chloride decorative sheets, thin leaf decorative sheets obtained by coating thin leaf printing paper with an aminoalkyd resin paint or polyurethane resin paint, or Decorative paper (patterned paper) impregnated with a thermosetting resin such as melamine resin, diallyl phthalate resin and unsaturated polyester resin is used as a base sheet such as kraft paper impregnated with the same thermosetting resin or phenol resin. It was a thermosetting resin decorative plate obtained by hot pressing with a multi-stage hot press or a continuous molding press.

[0004]

However, although each of the above-mentioned decorative materials has unique characteristics depending on the material and the manufacturing method, the appearance, surface hardness, bending workability, weather resistance, abrasion resistance, impact resistance ( Crack), stain resistance, chemical resistance,
In terms of water resistance, adhesive workability, and the like, they have not always been satisfactory as window window decorative materials.

That is, a decorative sheet made of a thermoplastic resin represented by a vinyl chloride decorative sheet has good adaptability to design, is rich in flexibility and is easy to process, but has low heat resistance, is easily damaged, and has a surface hardness. , Abrasion resistance, contamination resistance, and chemical resistance.

[0006] The thin leaf decorative sheet is low in cost and good in productivity, but when it is adhered to a substrate, irregularities and the like are apt to appear, and the surface hardness, abrasion resistance, stain resistance, chemical resistance, and water resistance are improved. Sex was low.

On the other hand, a thermosetting resin decorative board has a surface hardness,
It has excellent physical properties such as heat resistance and stain resistance, and has good appearance. However, compared to the decorative sheet, the bending resistance is poor, and when the bending workability such as V-cut bending or lapping or the thickness is reduced, the crack resistance is reduced. Sex was poor.

It is an object of the present invention to provide excellent appearance, surface hardness, bending workability, weather resistance, abrasion resistance, impact resistance, stain resistance, water resistance, and other physical properties required for a window siding decorative material. Another object of the present invention is to provide a window sill in which the decorative material is coated on a window sill base material.

[0009]

A first aspect of the present invention is that a decorative paper impregnated with a thermosetting resin, a nonwoven fabric impregnated with a thermosetting resin, and a processed paper are laminated and integrated in this order from the surface to a thickness of 0.2 to 0.1 mm. 5m
m is a window base characterized in that a window base material is post-form processed and covered with a m thermosetting resin decorative plate.

A second aspect of the present invention is the window stand according to the first aspect, wherein the thermosetting resin for impregnation used for the decorative board is a resin containing a melamine resin as a main component.

The window sill of the present invention is a window sill base material coated with a specific thin thermosetting resin decorative board by post-form processing.

The thermosetting resin constituting the thermosetting resin decorative board includes melamine resin, diallyl phthalate resin,
Examples include unsaturated polyester resins, vinyl ester resins, urethane resins, and the like. Among these, a resin containing a melamine resin as a main component is most suitable in terms of surface hardness, heat resistance, abrasion resistance, water resistance, chemical resistance and the like.

A decorative paper of a thermosetting resin-impregnated decorative paper serving as a surface layer of a decorative board is a printing paper (pattern paper) in which a pattern is printed on a papermaking paper in which a pigment (such as titanium white) is embedded in cellulose (pulp). ) And a basis weight of 50 to 150 g / m ² are most suitable.

The non-woven fabric of the thermosetting resin-impregnated non-woven fabric serving as the intermediate layer of the decorative board includes synthetic fibers such as polyester fiber (tetron, polyethylene terephthalate), polyamide fiber (nylon), vinylon fiber (polyvinyl alcohol), and cellulose. Fiber (pulp), etc., with a thickness of 5 denier or less, and a cut fiber cut to a length of 20 mm or less, is a non-woven fabric made into a sheet using poval, acrylic resin, epoxy resin, melamine resin, urea resin, etc. as a binder. What is printed if necessary is used.

Among them, polyester fibers are used in view of appearance, weather resistance, crack resistance, dimensional stability and strength.
A nonwoven fabric which is mainly composed of cut fibers having a thickness of 0.1 to 5.0 denier and a length of 2 to 20 mm and a binder having excellent water resistance such as melamine resin and acrylic resin as a binder is most suitable.

The processed paper to be the back layer of the decorative board includes parchment paper, glassine paper, resin-impregnated paper (phenol resin,
Such as paper impregnated with acrylic resin, urethane resin, rubber latex, etc.), and the strength of the paper itself (inter-paper strength), good adhesion to the resin-impregnated nonwoven fabric of the intermediate layer, and secondary Adhesives for processing (eg, urethane resin,
Reactive hommelt adhesives, chloroprene-based adhesives, vinyl acetate-based emulsions, etc.) are also used.

The method for producing the thermosetting resin decorative board having a thickness of 0.2 to 0.5 mm according to the present invention includes the decorative paper serving as the surface layer, the nonwoven fabric serving as the intermediate layer, and the back layer if necessary. The above-mentioned thermosetting resin is impregnated with the above-mentioned thermosetting resin and dried, and the thermosetting resin-impregnated decorative paper, the thermosetting resin-impregnated nonwoven fabric, and the processed paper are stacked in this order, and a multi-stage hot press machine or continuous It can be obtained by hot-press molding using a molding press.

Next, as a window base material, a material for architectural or structural use, such as medium density fiberboard (MDF), plywood, laminated wood, particle board, metal plate, etc., which is processed into a desired shape is used. To be served.

As a method for post-form coating the decorative board on the window base material, a window base material previously processed into a desired shape is coated with a urethane-based adhesive or a reactive hot-melt adhesive. In general, the decorative board is bonded while being subjected to post-form processing (post-bending processing) using the above adhesive.

Next, the present invention will be described with reference to embodiments and drawings.

1 is a sectional view showing the structure of a window sill according to the present invention. From the surface, the thermosetting resin-impregnated decorative paper 11, the thermosetting resin-impregnated nonwoven fabric 12, and the processed paper 13 are laminated and integrated in this order.
It is a window base in which a window base material 3 is post-form processed and coated via a thermosetting resin decorative board 1 of 2 to 0.5 mm and an adhesive 2.

Example 1 A paper having a basis weight of 80 g / m ² wood grain pattern printed decorative paper had a molar ratio of 1.4.
And impregnated with a melamine formaldehyde precondensate (melamine resin) having a resin content of about 65 g / m ² (resin solid content converted value) to obtain a dried prepreg as a thermosetting resin-impregnated decorative paper for a surface layer. .

A polyester fiber cut to a thickness of 1 denier and 5 mm in length is formed into a nonwoven fabric of 50 g / m ² made by povar and an acrylic resin as a binder, and the above melamine resin is added to about 100 g / m ² (resin solid content value) ) The impregnated and dried prepreg was used as a thermosetting resin-impregnated nonwoven fabric for the intermediate layer.

A parchment paper having a basis weight of 50 g / m ² was used as a processed paper for the back layer.

Next, the above is superimposed on a surface layer, an intermediate layer, and a back layer in this order, and at 160 ° C. using a continuous molding press.
Molded under heat and pressure conditions of 15 kg / cm ² for 30 seconds,
A decorative plate for Example 1 having a thickness of 0.3 mm was obtained.

Comparative Example 1 In Example 1, the basis weight was 80 instead of the nonwoven fabric of the intermediate layer.
A decorative board for Comparative Example 1 having a thickness of 0.3 mm was prepared in the same manner except that g / m ² pulp 100% paper was used.

Comparative Example 2 In Example 1, an unbleached kraft paper having a basis weight of 160 g / m ² was used in place of the nonwoven fabric of the intermediate layer and the processed paper of the back layer, and a resin content of 60% by weight at a molar ratio of 1.4. Phenol formaldehyde precondensate (phenol resin) of about 130 g /
The prepreg impregnated with m ² (resin solid content) and dried was used as a core layer (intermediate layer and back surface layer) and hot-press molded with two layers, the surface layer of Example 1. Since the core layer was uncured, the molding time required three times as long as 1 minute and 30 seconds, so that a decorative plate having a thickness of 0.3 mm for Comparative Example 2 was obtained.

As shown in FIG. 1, each of the decorative plates of Example 1, Comparative Examples 1 and 2, and having a thickness of 18 mm or an end portion of 40 mm was converted to a water-resistant M having a thickness of 36 mm, a width of 190 mm and a length of 2000 mm.
Using a DF, the surface of the window base material processed to have a corner radius of curvature of 6 mm was coated with a post foam using a urethane-based adhesive to form a window base. The performance test was measured as follows. Table 1 shows the results.

1. Warp test A specimen was left at 40 ° C. at 90% humidity for 7 days, and then left at 40 ° C. at 30% humidity for 7 days as one cycle. The converted value per 1 m of the warp before and after the test after two cycles (unit). mm).

2. Crack resistance test A cut of 3 mm in width and 30 mm in length was made in the test piece,
After leaving at 50 ° C for 1 day, leaving at -20 ° C for 1 day
Measure the presence / absence of cracks from the cut edges after 5 cycles (〇: no occurrence, ×: crack occurrence)

3. Outdoor exposure test The test specimen was allowed to stand outdoors for 30 days in the spring, and changes in appearance such as peeling and floating were observed (〇: no abnormality).

In addition, hot water resistance, heat resistance and impact resistance were measured in accordance with JIS K6902 “Test method for decorative thermosetting resin board”, but all passed and no difference was observed.

Table 1

[0033]

As is clear from Table 1, the window sill of the present invention has less warpage, excellent crack resistance, and no abnormalities are observed in an outdoor exposure test. Window post processed with a large warp,
Poor crack resistance or peeling in outdoor exposure test.

[Brief description of the drawings]

FIG. 1 is a sectional view of the configuration of a window sill according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Thermosetting resin decorative board 11 Thermosetting resin impregnated decorative paper 12 Thermosetting resin impregnated nonwoven fabric 13 Processed paper 2 Adhesive 3 Window base material

Claims (2)

[Claims] 1. A thermosetting resin decorative board having a thickness of 0.2 to 0.5 mm, which is laminated and integrated in the order of a thermosetting resin-impregnated decorative paper, a thermosetting resin-impregnated nonwoven fabric, and a processed paper from the surface, for a window stand. A window stand characterized in that a base material is coated by post-form processing. 2. The window stand according to claim 1, wherein the thermosetting resin used for the decorative board is a resin containing a melamine resin as a main component.