JPH0415444Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a flooring material using cedar.

Conventional technology In general, various materials such as aquarium, zelkova, and cypress are used for flooring, but cedar is unsuitable for flooring, so there are no plans to use it for flooring. has not been done previously.
In other words, since cedar is a soft material, it is difficult to obtain the strength required for practical use if flooring is formed in the same way as other materials, and it also has a lower moisture content than other materials. Because of the large degree of expansion and contraction involved, it also has the disadvantage of being susceptible to warping and bending.

However, cedar has the advantage of greater corrosion resistance and termite resistance than other materials, and in this respect it can be said to have sufficient value in use as a flooring material.

Therefore, in order to use cedar as flooring material, for example, as disclosed in Japanese Utility Model Application Publication No. 58-29404,
Both sides of the core made of laminated cedar wood are covered with cypress,
This product is made by attaching sliced veneer or sawn veneer of laminated wood of tree species such as aquarium or zelkova that has hardness and beauty as a surface material, thereby increasing its strength as a flooring material. It is well known that when joining floorboards, the groove process must be applied directly to the side of the cedar core material, so there is a problem that the joint strength is lower than that of flooring materials made of other materials. Moreover, since moisture can be absorbed freely through the side surfaces of the core material, depending on the location of use, the flooring material may warp or bend due to the expansion or contraction of the core material.

Problems to be solved by the invention The invention incorporates other wood materials into the core material made of cedar laminated wood to increase the joint strength against tongue and tongue joints, etc., and to minimize expansion and contraction due to moisture absorption. The objective is to reduce the amount of carbon dioxide and thereby improve its usability as a flooring material.

Means for Solving the Problems In order to solve the above problems, the present invention assembles a large number of board pieces made of cedar in the width and length directions, and at both ends of the width, The core material is laminated wood, which is made up of laminated board pieces made of We are taking measures.

Effects of the invention According to the invention, the core material made of laminated cedar wood is
Since it is constructed by laminating board pieces made of a wood material harder than cedar on both ends in the width direction, by applying a grooved finish to these board pieces, it is possible to increase the joint strength as a floor board, and at the same time, it is possible to By adhering veneers and board pieces made of other wood materials to both the front and back sides and both left and right sides of the cedar core material, the adhesive layer can securely hold the cedar core material. It is possible to substantially block the floor material from the outside air and limit its moisture absorption to only from both end faces in the length direction, thereby reliably preventing warping and bending of the floor material due to moisture absorption.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail based on the drawings. In FIG. It is made of laminated wood in which board pieces 2a, 2a made of a wood material harder than cedar are laminated in the length direction and at both ends in the width direction. The veneers 3 and 4 made of a wood material that is harder and more beautiful as a surface material are attached to each other, and the plate pieces 2 are located at both ends of the core material 1.
A tongue 5 and a groove 6 for joining are formed on a and 2a.

As the material for the board pieces 2a, 2a and the veneers 3, 4, coniferous or broad-leaved trees harder than cedar, such as cypress, water, zelkova, etc., can be used, and in that case, these board pieces 2a, 2a The veneers 3 and 4 can be made of the same or different wood species, but when they are made of the same wood species, the appearance of the flooring material is improved and the commercial value is increased.

In addition, the plate pieces 2a, 2a are jointed in the length direction because it is more effective to prevent the product from bending in the length direction and warping in width by removing internal stress as much as possible. It is preferable to use

Further, as the veneers 3 and 4, either a laminated veneer or a green veneer may be used.

As shown in FIG. 2, the flooring having the above structure is installed with the tongues 5 and grooves 6 joined together. Since the pieces 2a, 2a are subjected to the chamfering process, the joint strength is significantly higher than that in the case of directly processing the cedar wood, and the nails are also securely held when driving a nail into the joint.

Furthermore, by pasting the veneers 3 and 4 on both the front and back surfaces of the core material 1 and laminating the board pieces 2a and 2a of different wood species on both sides, the periphery of the cedar core material 1 is formed by the adhesive layer. Since it is substantially shielded from the outside air, the moisture absorption of the core material 1 is suppressed only from both end faces in the length direction, thereby preventing the floor material from warping or bending due to moisture absorption. Therefore, at least the veneers 3, 4
For attaching the plate pieces 2a, 2a, it is preferable to use an adhesive that has a moisture absorption suppressing effect, or to apply an ordinary adhesive in a large amount to produce a moisture absorption suppressing effect.

Further, the veneers 3 and 4 are coated with or impregnated with a synthetic resin for surface treatment, and this synthetic resin film also suppresses moisture absorption in the cedar core material. The moisture absorption suppressing effect of this surface treatment can be sufficiently obtained even when it is applied only to the front veneer 3, but it can be applied to both the front and back veneers 3, 4, or both veneers 3, 4 and the boards at both ends of the core material. If applied to the pieces 2a, 2a, the effect will be further enhanced.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a sectional view of the device in use. 1... core material, 2, 2a... board piece, 3, 4... veneer.

Claims (1)

[Scope of utility model registration request] A large number of board pieces made of cedar are assembled in the width and length directions, and board pieces made of a tree material harder than cedar are laminated at both ends in the width direction.The core material is laminated wood, and the front and back sides of the core material are A flooring material characterized by having veneers made of a tree material harder than cedar and beautiful as a surface material adhered to both sides.