JPH0351473A - Floor material - Google Patents

Abstract

PURPOSE:To maintain the sound insulating property sufficiently even at the connection parts by forming a connecting projection and a connecting recess to a sound insulating layer laminated through a sound insulating sheet to the rear surface of a hard base where numerous cut grooves are formed. CONSTITUTION:Numerous cut grooves 3... are formed at the rear surface side of a hard base 1, and a sound insulating sheet 4 is laminated along the whole surface of the rear side. Furthermore, at the rear side of the sheet 4, a sound insulating connection layer 12 which has a sound insulating property and a combining function is laminated. Then, a connecting projection 13 is formed by projecting one side end of the sound insulating connection layer 12 from the side end of the hard base 1, and a connecting recess 14 is formed by drawing back the other side end from the side end of the hard base 1. And the neighboring floor materials are connected by combining the connecting projection 13 and the connecting recess 14. Consequently, not only a high sound insulating property is given to the floor material, but also the reduction of the sound insulating property can be prevented even at the connecting position.

Description

[Detailed Description of the Invention] E-Industrial Application Field 1 The present invention mainly relates to wood-based flooring materials, and more specifically, the present invention relates to wood-based flooring materials that are hard like wood-based materials, but which suppress warpage and greatly reduce rigidity. , provides flexibility and improves sound insulation,
The invention also relates to a technology that attempts to ensure sound insulation at the connection location.

[Jumei's technology] In recent years, concrete-based housing complexes such as condominiums have been transitioning from carpet to wood-based flooring materials as floor finishing materials. This is thought to be due to reasons such as hygienic and health problems such as the growth of dust mites on carpets, troublesome maintenance such as cleaning, and people's admiration for wood. demand is increasing.

Wood flooring tends to warp, and
There were problems such as high rigidity, which made it easy for sound to be conducted.

To solve this problem, Japanese Patent Application No. 1-13196
We proposed No. 7 in which a large number of grooves are formed on the back surface of the flooring substrate to suppress warping, greatly reduce rigidity, and provide flexibility.

[Issue III to be solved by the invention By the way, with such a structure, the problem of hard wood flooring can be solved, but the impact sound generated on the surface of the hard flooring material can easily propagate. There is a problem in that noise is easily transmitted to downstairs etc., and the sound insulation function is greatly reduced at the connection points between the flooring materials.

The present invention was made in view of such problems,
The purpose of this is to suppress warping, greatly reduce rigidity, and improve flexibility even though it is hard like wood, and also to eliminate noise problems at connection points. Our goal is to provide a flooring material that can solve these problems.

[Hands for solving the problem Pi1 The flooring material of the present invention has a large number of grooves 3 on the back side of the hard substrate 1.
is formed, a sound insulating sheet 4 is laminated on the entire back surface of the hard substrate 1, a sound insulating bonding layer 12 having a sound insulating and bonding function is laminated on the back surface of the sound insulating sheet 4, and the side edges of this sound insulating bond N12 are laminated. protrudes from the side edge of the hard substrate 1 to form a coupling protrusion 13, thereby forming a sound-insulating coupling If! The other end of I12 is recessed from the other end of the hard substrate 1 to form a coupling recess 14 to which the coupling protrusion 13 is coupled.
It is characterized by the formation of

[Function] In this way, by forming a large number of grooves 3 on the back side of the hard substrate 1, the warping of the hard wooden substrate 1 is prevented by the many grooves 3, and the hard substrate 1 is prevented from warping. The rigidity of the substrate 1 is eliminated, but rather the rigid substrate 1 is given flexibility, and the sound insulation sheet 4 is laminated on the entire back surface of the rigid substrate 1, and the back surface of the continuous sound sheet 4 has a sound insulation and coupling function. By laminating the sound insulating bond/I12, double sound insulation between the sound insulating sheet 4 and the sound insulating bonding layer 12 can be achieved, and it is possible to prevent the kerf 3 from being opened in the sound insulating sheet 4 and the sound insulating bonding layer 12. Suppress, kerf 3
In particular, the side ends of the sound-insulating joint scraps 12 are made to protrude from the side ends of the hard substrate 1 to form joint protrusions 13, and the sound-insulating joint Ir41.
2 is retracted from the other end of the hard substrate 1 to form a coupling recess 14 to which the coupling protrusion 13 is coupled, thereby coupling the coupling protrusion 13 at the end of the sound insulating coupling layer 12. By joining to the recess 14, sufficient sound insulation is achieved even at the joints between the flooring materials.

[Example] Embodiments of the present invention will be described in detail below based on the drawings.

A wooden decorative board 2, such as a veneer made by thinly slicing wood and having wood grains (S-3-1 rice veneer), is attached to the surface layer of the hard substrate 1 with a soft damping sheet 5 interposed therein that absorbs vibrations. Laminated. The hard substrate 1 is made of plywood, and the plywood used is 3-ply, 5-ply, or 7-ply. The thickness of such a hard board 1 made of plywood is 5IIll ~
It has a thickness of about 20 mm, and sizes such as 5 x 3 shaku, 1 x 3 shaku, and 1 x 6 shaku can be used. Cut grooves 3 are arranged substantially parallel to each other on the back side of the hard substrate 1 using saw blades, thereby imparting sufficient flexibility to the hard substrate 1. Cut groove 3
may be formed vertically and horizontally. Cut groove 3 is 1.6 questions to 3
．． 2InlI is about 1 width, and the spacing between the grooves 3 is 5.
0IIllI1 to 30a+m. The most preferable number is 101 to 15 questions. A sound insulation sheet 4 having a high sound insulation function is laminated on such a hard substrate 1,
This sound insulation sheet 4 suppresses the kerf 3 from widening. The sound insulating sheet 4 is preferably a bare sheet or a low foam sheet with a rubber hardness of about 10° to 95°. It is preferable that the sheet be made of hard rubber, and the sound insulation sheet 4 should be one that does not elongate under tension. And sound insulation sheet 4 is 1.0LGII
A thickness of about 1 is sufficient.

A sound insulating bond 112 having a sound insulating and bonding function is laminated on the back surface of such a sound insulating sheet 4. This sound insulation combination I@
12 is a compressed fiber sheet-like material such as nonwoven fabric or felt, and has a thickness of about 5.0 to 20.0 mm. By laminating the sound insulation bonding layer 12 of the sound insulation sheet 4,
Double sound insulation is achieved by the sound insulation sheet 4 and the sound insulation bonding layer 12. Sound sheet 4 and sound insulation combination, lill2
This prevents the cut grooves 3 from being opened, and because the cut grooves 3 are formed, the flooring material is prevented from being deformed by the load.

A side end portion of the sound-insulating bonding layer 12 projects from a side edge of the hard substrate 1 to form a coupling protrusion 13 . The other end of the sound-insulating coupling scrap 12 is retracted from the other end of the hard substrate 1 to form a coupling recess 14 to which the coupling protrusion 13 is coupled. By coupling the coupling protrusion 13 at the end of the sound-insulating bonding layer 12 to the coupling recess 14, sufficient sound insulation is achieved even at the joints between the flooring materials. A fitting convex portion 15 and a fitting concave portion 16 are also formed on the hard substrate 1, and by fitting these concave and convex portions,
The bonding strength between floor materials A and A is increased. The coupling protrusions 13 and the fitting protrusions 15 are formed on two sides of the floor material A, and the coupling recesses 14 and the fitting recesses 16 are formed on the remaining two sides. The coupling protrusion 13 and the coupling recess 14 may be formed on each side. The protrusion length l of the coupling protrusion 13 is 20
It is about 30 mm.

By the way, the sound insulation sheet 4 is a mixed sheet in which a high specific gravity substance such as valum sulfate, lucium bicarbonate, lead powder, copper powder, etc. is mixed into a base material such as polyethylene, EVA, urethane, natural rubber, etc. It is desirable that the specific gravity is 1.0 or more, that is, a specific gravity of about 1.5 to 3.0 is used.

The floor material A is laid directly on a concrete slab or the like without nailing or adhesive.

[Effects of the Invention] In summary, the present invention has a large number of kerfs formed on the back side of a hard substrate. The rigidity of the substrate 1 can be eliminated, rather flexibility can be imparted to the rigid substrate 1, and a sound insulation sheet is laminated on the entire back surface of the hard substrate, and a sound insulation bonding layer having sound insulation and bonding functions is laminated on the back surface of the sound insulation sheet. The sound insulation sheet and the sound insulation bonding layer provide double sound insulation, and the sound insulation sheet and the sound insulation bonding layer prevent the kerf from opening, and because the kerf is formed, the flooring material is prevented from being deformed by the load. In particular, the side end of the sound insulating bonding layer protrudes from the side end of the hard substrate to form a bonding protrusion, and the other end of the sound insulating bonding layer retires from the other end of the hard substrate to form a bonding protrusion. Since a joint recess is formed in which the sound insulating joint layer is joined, an advantage is that sufficient sound insulation can be achieved even at the joints between flooring materials by joining the joint protrusion at the end of the sound insulating joint layer to the joint recess. be.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of an embodiment of the present invention in the transverse direction, Fig. 2 is a cross-sectional view of the same in the arm direction, Fig. 3 is a perspective view of the same, and Fig. 4 is a cross-section of the same in the construction state. In the diagram -'? - 1 is a hard substrate, 3 is a cut groove, 4 is a sound insulating sheet, 12 is a sound insulating bonding layer, 13 is a coupling protrusion, and 14 is a coupling recess.

Claims (1)

[Claims] (1) A large number of grooves are formed on the back side of the hard substrate, a sound insulation sheet is laminated on the entire back surface of the hard substrate, and a sound insulation bonding layer having sound insulation and bonding functions is laminated on the back side of the sound insulation sheet. The side end of the bonding layer protrudes from the side edge of the hard substrate to form a coupling protrusion, and the other end of the sound-insulating bonding layer is recessed from the other end of the hard substrate to form a coupling recess into which the coupling protrusion is coupled. A flooring material characterized by being formed.