JPS593243B2 - Decorative veneer manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a decorative veneer, in which a sliced veneer of coniferous wood such as Japanese pine or Japanese toga is pressed to destroy cell membranes in the spring wood, and then impregnated with a synthetic resin or a dyeing solution. It is.

In conventional WPC (wood-plastic composite), only Yonetsuga sliced veneer among softwoods has a phenomenon in which the hue of the spring wood and summer wood is reversed [the spring wood is dark and the summer wood is light (white thread)]
However, in the WPC treatment of other coniferous sliced veneers, it was not possible to reverse the hue and grain of Yonega sliced veneers when the Yonetsu C treatment was applied.

The softwood veneers other than the Yonetsuga sliced veneers were treated with WPC to have a normal hue and grain.

(Spring wood part = light color, summer wood part = dark color) Also, there are some Yonetsuga sliced veneers that do not exhibit the reversal phenomenon (hue grain).

The present invention has been made in view of the above points, and the object of the present invention is to press a wooden veneer with a press and apply WPC treatment or dyeing treatment to break the cell membrane in the spring wood portion. To provide a method for producing a decorative veneer which can cause reverse development of hue wood grain in a spring wood part with cell membrane destruction and a summer wood part without cell membrane destruction.

The present invention will be explained in detail below with reference to Examples.

A wood veneer 1 such as Japanese pine or Yoneka sliced veneer is passed between an upper roll 2 and a lower roll 3 as shown in FIG. 1 to cause cell membrane destruction in the spring wood portion of the wood veneer 1.

At this time, the upper roll 2 is a rubber cushion roll,
Rubber hardness 40~60° and thickness 2.0~5.01! L11
It is L.

The lower opening -/I/3 is a hard roll made of iron, stainless steel, or the like.

The speed at which the wood veneer 1 is fed is 5 to 50 m10.
The pressure is a linear pressure of 1.5 to 5.0 mm to press the upper roll 2 to the lower roll 3 of 1.5 mm to 3.0 mm. It is OT.

When the wooden veneer 1 is passed between the upper roll 2 and the lower roll 3, cell membrane destruction occurs only in the soft spring wood portion, but not in the summer wood portion.

By impregnating the wooden veneer 1, which has caused cell membrane destruction partially in the spring wood part, with a thermosetting resin such as polyester resin under reduced pressure or pressurization, and heat-molding it with a hot-pressure flat press, spring material is formed. Resin impregnation becomes easy and uniform impregnation is possible by causing a phenomenon of reversal of the hue and grain of the wood and summer wood, and by destroying the cell membranes of the spring wood.

Furthermore, the wood veneer 1 whose cell membranes have been partially destroyed in the spring wood portion may be impregnated with a thermoplastic resin.

In this case, polymerization is carried out by a radiation method or a chemical polymerization method.

Producing a decorative veneer as described above has the following effects.

Reverse development of the hue wood grain occurs, and cell membrane destruction of the spring wood portion facilitates resin impregnation, allowing uniform impregnation without uneven resin impregnation and improving overall resin impregnation.

In addition, since the cell membrane of the spring wood is destroyed, the hardness can be improved compared to untreated products.

Furthermore, since the grain of the wood is reversed, it is possible to use a veneer with a large number of grains (fine grain), and the peelability can be improved.

[Brief explanation of drawings]

FIG. 1 is a schematic front view of one embodiment of the present invention, and 1 is a wooden veneer.

Claims (1)

[Claims] 1. A wooden veneer is passed between the upper roll of a rubber cushion roll and the lower roll of a hard roll and pressed to cause cell membrane destruction in the spring material, and then impregnated with a synthetic resin or dyeing solution. A method for manufacturing decorative veneer.