JPS6114314B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a sill used as a general housing construction material.

Conventionally, the thresholds used as thresholds are generally made of sawn wood itself with a decorative veneer attached to laminated wood, but the thresholds wear out due to friction from shoji screens, sliding doors, etc., and friction from people coming in and out. This is one of the building materials that particularly requires wear resistance. In addition, since the surface has grooves cut into it for sliding doors and sliding doors, there are many uneven corners and it is easy to chip, so cherry wood, which is relatively hard and strong, is used. However, even this did not solve the problems of chipped edges and rapid wear due to irregularities in the arrangement of the wood composition. Furthermore, in areas where cypress or pine wood is used for thresholds, because the wood is soft, it suffers from chipping, abrasion, staining, tar ooze, etc. more than cherry wood, and does not have a sufficient service life. In order to solve these problems, studies have been conducted to use so-called WPC veneers, which are surface-decorated veneers forcibly injected with synthetic resin liquid, and some of these are commercially available. With such a method, the veneer of white wood-like pine or cypress becomes transparent due to the resin that is forcibly injected, and the original color tone of pine or cypress cannot be obtained, but instead it becomes a yellow-brown resin color or the color of the underlying base material. Due to the color, the color is unnatural, and it has not been commercialized yet.

Therefore, the present invention solves the drawbacks of conventional sills and the problem of color (plain wood-like sills) caused by resin injection by changing the composition of the injected resin. In other words, in manufacturing the sill, first, the veneer laminated material is laminated and bonded with the fiber directions of the veneers almost parallel to each other, and then cut to approximately the size of the sill, and the top surface and both sides are coated with saturated polyester resin. 5～30
parts by weight, unsaturated polyester resin 95-40 parts by weight,
20-150 parts by weight of unsaturated monomer and 0.3 parts by weight of polymerization initiator
A plain wood-like veneer impregnated with a synthetic resin liquid of a polyester resin composition containing ~10 parts by weight is attached to the top surface of the veneer laminate via an adhesive so that the veneer fiber direction is parallel to the length direction of the base material. and then DAP on top of this.
resin, melamine resin, unsaturated polyester resin,
and other known thermosetting resins such as mixtures thereof.

After curing, a resin-impregnated overlay paper fabric selected from transparent sheets is placed on top and hot-press molded.

Both sides may be pasted with resin-impregnated veneer or regular natural wood decorative veneer in the same way.
It can be selected as appropriate depending on the use.

The thus obtained sill has a plain wood-like appearance and the high abrasion resistance characteristic of resin-treated veneers, which could not be obtained with conventional sills overlaid with resin-injected veneers.

To explain the present invention in detail, the plain wood-like wood veneer is treated with at least one of propylene glycol, neopentyl glycol, and 1,3-butylene glycol.
A polyhydric alcohol component containing 50 mol% or more of seeds and at least one of isophthalic acid and terephthalic acid.
5 to 30 parts by weight of a saturated polyester resin obtained by reacting an acid component containing 50 mol% and an aliphatic polybasic acid of 90 to 50 mol%, and an aliphatic resin which may contain an aliphatic or aromatic saturated polybasic acid. 95 to 40 parts by weight of an unsaturated polyester resin obtained by reacting an unsaturated polybasic acid component with a side chain polyhydric alcohol or a polyhydric alcohol component containing at least 50 mol% of a cyclic polyhydric alcohol, and the unsaturated Unsaturated monomer 20-150 that can be copolymerized with polyester resin
8 sheets impregnated with a polyester resin containing 0.3 to 10 parts by weight of a polymerization initiator, cypress -0.5m/m from the surface layer, spruce
Layer 2 sheets of 1.0m/m, 3 sheets of cypress 0.5m/m, and 2 sheets of spruce 1.0m/m with adhesive. At this time, a DAP resin-impregnated sheet was placed on top of the surface layer of cypress, and the fiber direction of the decorative veneer was made the same in the length direction of the substrate veneer laminate, and hot pressure molded at 140°C x 20 minutes x 10 kg/cm ² . The plain wood-like veneers used here are cypress, pine, and spruce, but it is effective to arrange them so that high-quality veneers of the same type are placed in the grooves of the surface layer and sill. Next, untreated Japanese cypress veneer was decoratively pasted on both sides to obtain the threshold of the present invention.

Example 1 A resin solution mixed with 20 parts of saturated polyester resin (60% resin content), 70 parts of unsaturated polyester resin (60% of resin content), 3 parts of melamine resin, 3 parts of styrene monomer, 10 parts of benzoyl peroxide, and 2 parts of benzoyl peroxide was mixed into a 0.45-thick Japanese cypress paste. 4 veneers,
Three 1.0m/m spruce veneers were coated and impregnated. The coating amount was 90g/ ^shaku2 . Separately, we also have Taguras 3.m/m x 9ply veneer laminate material A (width 102
(m/m x thickness 30m/m x length 4000m/m) was prepared, and resin-treated veneer was placed on top of it from the surface layer: cypress 1, spruce 2, spruce 3,
Cypress 4, Cypress 5, Cypress 6, and Spruce 7 are stacked in this order using adhesive. Furthermore, DAP-impregnated paper 9 is placed on top of the Japanese cypress 1 and integrated with heat pressure adhesive at 140°C for 20 minutes at 10 kg/cm ² .Next, untreated Japanese cypress veneer 8, which is the same as 1, is attached to both sides 10 with adhesive. Heat pressure and glue, and finally groove 1
1 and 12 were cut into pieces to obtain a plain wood-like reinforced threshold.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the invention, Fig. 2 is a side view showing an embodiment of the present invention;
The figure is a partially cutaway perspective view showing an embodiment of the present invention. 1, 4, 6, 8, 10...Hinoki wood, 2, 3, 7...
...Spruce, 9...DAP impregnated paper, 11, 12
...concave groove.

Claims (1)

[Claims] 1. In producing the threshold, one or more plain wood-like veneers are mixed with 5 to 30 parts by weight of a saturated polyester resin, 95 to 45 parts by weight of an unsaturated polyester resin, and 20 to 20 parts by weight of an unsaturated monomer. 150 parts by weight, and 0.3~ polymerization initiator
1. A method for producing a sill, which comprises coating and impregnating a resin solution consisting of a polyester resin composition containing 10 parts by weight, and overlaying at least one surface layer of these veneers laminated with an adhesive with the resin. 2. The method for manufacturing a threshold according to claim 1, wherein the impregnated resin and the resin-impregnated sheet are colored.