JPS5898584A - Production of threshold - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 ones used as thresholds are generally made of sawn wood itself and laminated wood with decorative veneer attached to it.
Thresholds are subject to severe wear due to the friction of shoji screens, sliding doors, etc., and the friction of people coming in and out, making them one of the building materials that particularly requires wear resistance. In addition, because the surface is carved with grooves for sliding doors and shoji, there are many uneven corners and it is easy to chip.
A relatively hard and strong adhesive material is used. However, this did not solve the problems of chipped edges and rapid wear due to irregularities in the arrangement of the wood composition. In addition, in areas where waste wood or pine wood is used as a threshold, the wood is soft, so it suffers from chipping, abrasion, dirt, tar ooze, etc., and does not have a sufficient service life. In order to solve these problems, studies have been carried out by using so-called 'W, P, O veneers, which are surface decorative veneers forcibly injected with synthetic resin liquid, and some of them are commercially available. However, with this 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. Due to the color of the base material, the color is unnatural and has not been commercialized.

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, to manufacture 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. Impregnation with a synthetic resin liquid of a polyester resin composition containing 5 to 30 parts by weight, 95 to 40 parts by weight of an unsaturated polyester resin, 20 to 150 parts by weight of an unsaturated monomer, and 0.3 to 10 parts by weight of a polymerization initiator. The plain wood-like veneer is layered on the top surface of the veneer laminate using an adhesive so that the fiber direction of the veneer is parallel to the length direction of the base material, and then DAP resin, melamine resin, and unsaturated polyester resin are applied on top of this. , and mixtures thereof.

It is obtained by placing a selected resin-impregnated overlay paper cloth on a sheet having transparency in a curing machine and hot-pressing it.

Both sides may be affixed with a resin-impregnated veneer in the same manner, or may be affixed with a normal natural wood decorative veneer, which 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, a plain wood-like wood veneer is combined with a polyhydric alcohol component containing 50 mol% or more of at least one of propylene glycol, neopentyl glycol 11.3-butylene glycol, 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 10 to 50 mol% of seeds and 90 to 50 mol% of an aliphatic polybasic acid, and an aliphatic or aromatic saturated polybasic acid. 96 to 40 parts by weight of an unsaturated polyester resin obtained by reacting an aliphatic unsaturated polybasic acid component with a polyhydric alcohol component containing at least 50 moles of a side chain polyhydric alcohol or a cyclic polyhydric alcohol. 8 sheets impregnated with a resin made of a polyester resin containing 20 to 150 parts by weight of an unsaturated monomer copolymerizable with the unsaturated polyester resin and 3 to 10 parts by weight of a polymerization initiator α.

From the surface layer, Hinoki-Q, 5 pa/I, Spk X 1.
0 #'/#I X 2 pieces.

Hinoki 0.5 town/111 x 3 pieces, Subruce 1.011/'
#IX Layer 2 sheets with adhesive. At this time, a DAP resin-impregnated sheet was placed on 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 molding was performed at 140° C. for 20 minutes and 10 Vd. The plain wood-like veneers used here are cypress veneers and subluce, 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, both sides were decorated with untreated cypress veneer to obtain the threshold of the present invention.

Example 1 20 parts of saturated polyester resin (resin content 60%) 70 parts of unsaturated polyester resin (resin content 60≦) Melamine resin 3 parts Styrene monomer 10 m A resin solution mixed with 2 parts of benzoyl peroxide was mixed to a thickness of 0.4
It was coated and impregnated on 4 cypress veneers of No. 5 and 3 of Subruce veneers of 1.0. The amount of coating is 9017 shaku. In addition to this, a veneer laminate material (4) of tag glass 3゜1'll/jl x 9 ply (width 102ψ x thickness 30 flll/m x length 4000111/jll Niriki?) T, Tachi g) All preparations are made, and a resin-treated veneer is placed on the top surface of the cypress (hinoki) (
1).

Subruce (2), Subruce (3), Hinoki (4), Hinoki (
5), Hinoki (6).

Soft blue (7) is layered one after another using adhesive.

Furthermore, layer the DAP-impregnated paper (9) on top of the cypress (1), and
'O - 20 minutes - Integrate the 10th floor with tough heat and pressure adhesive, then glue the same untreated cypress veneer (8) as (1) on both sides αQ with adhesive, and finally form the groove. q◇(2) was cut into pieces to obtain a plain wood-like reinforced sill.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the invention, and FIG. 2 is a partially cutaway perspective view showing an embodiment of the invention.

Claims (2)

[Claims] (1) When manufacturing the threshold, add 5 to 30 parts by weight of saturated polyester resin to one or more plain wood-like veneers.
95-45 parts by weight of unsaturated polyester resin, 20-150 parts by weight of unsaturated monomer, and 0.3-45 parts by weight of polymerization initiator.
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 via 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.