JPS634755Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a flooring material using paper core that is laid under tatami mats as a flooring material.

Traditionally, when building a Japanese-style room, the flooring material placed under the tatami mats was used by nailing regular wooden boards onto a lattice-like framework made of square lumber, or by using styrofoam boards on a concrete floor. A carpet lined with was used.

However, the former type of flooring material has been used for a long time and requires a certain degree of strength and shear strength, so it uses thicker wood, which has the disadvantage of increasing costs due to soaring lumber prices. can be,
Although the latter flooring material is inexpensive, it has poor sound insulation effect.
The shear strength was also low, and when someone jumped on the tatami mats, it would make a lot of noise, which could easily be transmitted to rooms on the floor below.

This idea was made in order to eliminate the above-mentioned drawbacks.The paper core flooring has a high sound insulation effect, good moisture absorption and air permeability that wood has, and is relatively lightweight and inexpensive to manufacture. The purpose is to provide materials. To this end, the present invention involves press-fitting sawdust mixed with adhesive into the inside of a honeycomb-shaped paper core impregnated with thermosetting resin and having a large number of continuous through holes, and sandwiching this sawdust-filled paper core between plywood sheets. A concave or convex frame material is attached to the four side edges of this panel so that the frame materials on the adjacent side edges become frames of the same shape to form a flooring material. It is something.

Hereinafter, embodiments of this invention will be described based on the drawings.

FIG. 1 is a perspective view of a flooring material containing a paper core 1 therein, and FIG. 2 is an enlarged sectional view taken along line A-A. To explain the paper core 1 inserted inside the flooring material, this paper core 1 is made by cutting a base paper impregnated with a thermosetting resin into a predetermined size at the time of paper making, and pasting lines at regular intervals on the top surface of the base paper. A large number of glued base papers are stacked and pasted with the glue lines alternately shifted, and the stacked laminated papers pasted in this way are cut to size horizontally, and then
It is manufactured by expanding it to a predetermined size to form a honeycomb-shaped panel and subjecting it to a heat curing treatment. The paper core manufactured in this manner has predetermined water resistance, humidity resistance, heat resistance, and standardized compressive strength and shear strength, and is used as a core material for doors and the like.

2 and 3 are convex frame members that form adjacent sides of the flooring, and have protrusions 2a and 3a formed in the longitudinal direction with a step at the bottom, so that when the flooring is laid down, is formed to fit into the concave frame of the adjacent flooring. In addition, 4 and 5 are concave frame members forming adjacent sides on the opposite side, and have a concave part 5a extending in the longitudinal direction with a step at the bottom. The convex frame members 2 and 3 and the concave frame members 4 and 5 form the side portions of the floor member.

When manufacturing flooring, first, water-resistant and relatively thin plywood is cut into a predetermined size to form the lower plywood 6, and the four side edges of the lower plywood 6 are fitted with convex frame members 2 and 3. The concave frame materials 4 and 5 are pasted so that frame materials of the same shape are arranged on adjacent sides, and the paper core 1 having the above structure is attached to the entire inside of the lower plywood 6.
is inserted and pasted. At this time, the height of the paper core 1 and the height of the surrounding frame material are set to be the same. Next, sawdust 8 mixed with adhesive is put into the paper core 1, and a sufficient amount of sawdust is pressed into the paper core 1 using a roller.Finally,
The upper plywood 1, which is the same in quality and shape as the lower plywood 6, is placed over and adhered to the frame material and paper core 1 to complete the flooring.

The flooring material formed in this way is laid by fitting the convex frame members 2 and 3 and the concave frame material onto a concrete base for a Japanese-style room, etc., and prevents squeaks due to misalignment of each flooring material. To prevent this from occurring, the fitting portions of each frame member are nailed and connected and fixed. It should be noted that the moisture emitted from the concrete base etc. is absorbed by the sawdust 8 inside the paper core 1, and the sound insulation effect on the sound generated on the tatami mat is good regardless of the lightweight flooring material.

As mentioned above, the flooring material of this invention uses a paper core as the core material and is formed by press-fitting sawdust mixed with adhesive into the paper core, so it is lighter and can be produced at a much lower cost than wood boards. It also has good hygroscopicity. In addition, compared to styrofoam flooring, the sound generated when people jump on tatami mats is lower, and there is less sound propagation to rooms on the lower floor, making it a good sound insulator. It is. Furthermore, since the paper core is made from base paper impregnated with thermosetting resin during papermaking and subjected to thermosetting treatment, a sufficient amount of resin is uniformly impregnated throughout the paper core compared to immersion impregnation, resulting in greater compression. Since it has strength, the strength of the flooring material can be increased.

[Brief explanation of the drawing]

The figures show an embodiment of this invention; FIG. 1 is a perspective view of a floorboard, and FIG. 2 is an enlarged sectional view taken along the line A--A in FIG. 1. 1... Paper core, 2, 3... Convex frame material, 4,
5... Concave frame material, 6, 7... Plywood, 8... Sawdust.

Claims (1)

[Scope of utility model registration request] This is a flooring material in which a honeycomb-shaped paper core with a large number of continuous through-holes is sandwiched between upper and lower plywood panels and is pasted. Sawdust mixed with adhesive is press-fitted into the inside of the paper core, and concave or convex frame members of the same shape are attached to two adjacent side edges of the plywood that sandwich the paper core from above and below. A flooring material that uses a paper core that is characterized by a fixed fit.