JPH0721890U - Soundproof floor board for discarding construction - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a wooden soundproof floorboard that is directly constructed on a wooden wasteboard that is constructed on the joist of the second floor of a non-concrete house. [Structure] The thickness of the decorative sheet attached to the surface is 5-9
A soundproofing floorboard for discarding construction, in which a foamed synthetic resin sheet having convex portions formed on the front and back surfaces is attached via an adhesive to the lower surface of a wooden board in the range of mm.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is mainly applied to a wood-based floor base material such as plywood for concrete formwork or particle board that is constructed by discarding it on the joists of the second floor of a non-concrete house using wood or steel as a structural material. It is a thin wooden floorboard that is directly bonded to the floor. More specifically, living vibration or noise (lightweight floor impact sound or heavy floor impact sound) propagates to the next room or downstairs through the floor base material. The present invention relates to a wood-based soundproof floor board for abandoned construction, which has a suitable amount of sinking when walking and is excellent in walking feeling.

[0002]

[Prior art]

 Conventionally, since the second floor of wooden framed houses and steel-framed houses is joisted, the backside of the base material with a thickness of about 12 mm with a thin veneer on the surface has a thickness of about 2-4 mm. The floorboard when the soundproof floorboard that is directly adhered to the surface of the general concrete slab integrated with the floorboard, which has the foamable synthetic resin sheet with a uniform foaming ratio of about 5 to 10 times The foam sheet on the back side has cushioning properties, and the joist is also more flexible than the concrete slab with respect to the load from the floor, so not only does it have an adverse effect such as poor walking feeling, but also the joist is used. The effect of preventing noise from being transmitted downstairs could not be expected so much as compared to the case of construction on concrete slabs.

[Problems to be solved by the device]

[0003] Therefore, there is also a method in which a concrete formwork plywood, a particle board, and the like are applied as a throw-over on the joist set, and then the above soundproof floor board is further installed on the upper surface thereof, but the soundproofing effect is not achieved. Even if it was obtained, there was a problem that the amount of sinking of the floorboard increased and the thickness of the floor became thicker and the price also increased.

[0004]

[Means for Solving the Problems]

 This invention has been made to solve the above-mentioned problems, and its structure is such that a decorative sheet is adhered to the surface of a wooden substrate having a thickness of 5 to 9 mm and an adhesive agent. The present invention relates to a soundproofing floorboard for temporary disposal, in which foamed synthetic resin sheets having convex portions formed on both front and back surfaces are attached.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a cross-sectional view of a floorboard according to an embodiment of the present invention, and FIG. 2 shows a sound insulation class test result of a light wooden floor impact sound of a wooden floorboard according to a comparative example of the present invention. .

As the decorative sheet 1 attached on the wooden substrate 2, a commonly used thin decorative veneer having a thickness of about 0.2 to 0.5 mm, decorative paper, synthetic resin decorative film, or the like is used. A sheet of substantially the same material as the decorative sheet 1 attached to the front surface and having the same thickness is attached to the back surface of the substrate 2 as a temporary attachment for the purpose of preventing warpage and twisting of the decorative sheet. Sometimes.

As the wooden substrate 2, plywood, particle board, MDF, LVL or the like is used, and a thin substrate having a thickness in the range of 5 to 9 mm is used. It is better to make the wooden board 2 thinner, but if it is too thin, it will crack or corrode due to the load from the surface, causing a problem in the durability performance as a floorboard, and if it is thick, the thickness of the entire floor will increase and the indoor space will be narrowed. At the same time, since there are problems such as an increase in price, a substrate in the above range is used.

Then, a foamed synthetic resin sheet 3 having convex portions 4 and 5 formed on both sides is attached to the lower surface of the wooden substrate 2 via an adhesive. As the foamed synthetic resin sheet 3, there is used a product obtained by embossing and providing unevenness so that the contact area ratio between the substrate 2 and the floor base material is in the range of 40 to 50%.

The shapes of the protrusions 4 and 5 formed on both sides of the foamed synthetic resin sheet 3 may be the same on both sides, but the height of the protrusions 4 on the surface in contact with the wooden substrate 2 is formed on the back surface in contact with the floor base material. It is preferable that the height is lower than the height of the convex portions 5 because the sinking when a load is applied from the surface of the floorboard is reduced and the surface feels firm and the soundproofing effect is improved.

As an example of producing the foamed synthetic resin sheet 3 used in the present invention, the specific gravity is 0. A flat foamed resin sheet with a thickness of about 6 to 15 mm in the range of 0. 3 to 0. 10 is used from both sides of the sheet by using an embossed template having convex areas formed on the surface so as to be in a predetermined range. It is heated and pressed to finish the thickness of the convex portion in the range of 3 to 5 mm and the thickness of the concave portion in the range of 1 to 2 mm.

As the synthetic resin used for the foamed synthetic resin sheet 3, urethane resin can be preferably used because it has excellent properties such as adhesiveness with other materials, moldability, and elasticity. It is also possible to use a foamed synthetic resin sheet made of a synthetic resin such as polyethylene or polypropylene.

For the adhesion between the wooden substrate 2 and the foamed synthetic resin sheet 3 having the concavities and convexities 4 and 5 formed on both sides, a commonly used synthetic resin adhesive such as rubber, vinyl, melamine, or phenol resin is used.

In addition, in order to improve workability, a peripheral portion of the soundproof floor plate is subjected to a joining process such as a real fruit.

[0015]

[Action]

 In the present invention, it is experimentally known that the thickness of the wooden substrate 2 is set to be in the range of 5 to 9 mm, in general that the softer the surface of the decorative board that emits sound is, the softer it is, the less sound is generated. However, if the thickness of the wooden board 2 as the surface material is too thin than 5 mm, the load from the surface may cause cracking or corrugation, which may cause a problem in durability performance as a floor board, and at the same time, to facilitate construction. This is because the joining process becomes difficult.

The thickness of the synthetic resin foam sheet 3 adhered to the lower surface of the wooden substrate 2 is 40 to 50% so that the contact area ratio between the surface of the synthetic resin foam sheet 3 and the floor base material (discarded) is 40% to 50%, respectively. By performing double-sided thermocompression molding in the range of 3.0 to 5.0 mm, the amount of sinking of the expanded synthetic resin sheet 3 due to the load is reduced as much as possible, and solid propagation sound to the floor base material is prevented as much as possible. Because of that.

When the composition such as the thickness and the contact area ratio of the foamed synthetic resin sheet 3 attached to the lower surface of the wooden board 2 is specified, compared to the conventional floorboard in which a foamed sheet having no unevenness is attached to the wooden board. In addition, the soundproofing performance is improved and the amount of sinking relative to the load from the floorboard surface can be reduced. In the floorboard of the embodiment of the present invention, it was found that the result of the noise measurement test was the sound insulation class (LL) value and the lightweight floor impact sound passed L-65.

An embodiment of this invention will be shown below.

[0019]

【Example】

 Both sides of urethane foam resin sheet 3 with a specific gravity of 0.04 and a thickness of 10 mm on the back side of a 5.0 mm-thick plywood 2 in which a veneer veneer veneer 1 with a thickness of 0.3 mm is attached to the front and back sides. By hot pressing with a template, the convex portion 4 has a thickness of 4 mm, the concave portion has a thickness of 1 mm, the surface area in contact with the plywood 2 has a contact area ratio of 50%, and a floor base material (plywood having a thickness of 12 mm). ), The foam synthetic resin sheet 3 having a circular convex portion 5 having a diameter of 9 mm was attached to the back surface in a contact area ratio of 45% to obtain a required sound-absorption floorboard for construction. .

As a comparative example, a normal decorative floorboard without soundproofing was prepared in which a 12 mm-thick plywood surface was pasted with a 0.3 mm-thick veneer.

Then, these floor boards are fixed on a floor base material having a particle board with a thickness of 15 mm disposed on a 45 mm square joist set arranged at 300 mm intervals with an adhesive, and the upper surface of the floor board is tapped. Lightweight floor impact sound is added individually, and the noise for each frequency is measured using a sound level meter on the bottom surface of the joist, and the sound insulation class (LL) value and the load assuming the human heel area and weight are used. By applying a load of 80 Kg per 50 mm in diameter to the surface of a floorboard, the amount of sinking of the floorboard was determined.

As shown in FIG. 2, the test results show that the sound insulation class (LL) value of the conventional floorboard reaches 75 for the light weight floor impact sound, but it reaches 65 for the soundproof floorboard according to the embodiment of the present invention. In addition to passing the test, we obtained the result that the amount of sinking of the plate was kept relatively low in order to improve the sound insulation performance.

[0023]

[Effect of device]

 Since the soundproof floorboard of the present invention has the above-mentioned structure, the surface thereof is made of wood and the overall thickness is thinner than the conventional soundproof floorboard. In the embodiment, the floorboard is about 9 mm thick, regardless of the thickness. As the sound insulation class value (LL) can reach L-65 with a lightweight floor impact sound while maintaining the strength as above, the sound insulation performance can be easily provided without making the upper floor too thick. You can

Further, the foamed synthetic resin sheet having irregularities formed on both sides is relatively less likely to sink in comparison with the improvement of the soundproof performance against the load from the floor surface, and the discomfort during walking is eliminated. Have an effect.

[Brief description of drawings]

FIG. 1 is a side view of a floorboard according to an embodiment of the present invention.

[Fig. 2] Sound insulation class test results of a floorboard according to an example and a floorboard according to a comparative example by a lightweight floor impact test

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Decorative sheet 2 Wooden substrate 3 Foam synthetic resin sheet 4 Convex portion on front surface 5 Convex portion on back surface

Claims (2)

[Scope of utility model registration request] 1. A lower surface of a wooden substrate (2) having a thickness of 5 to 9 mm with a decorative sheet (1) attached to the surface,
A soundproofing floor board for waste-pasting construction, characterized in that a foamed synthetic resin sheet (3) having convex portions (4, 5) formed on both front and back surfaces is attached via an adhesive. 2. The foamed synthetic resin sheet (3) attached to the lower surface of the wooden substrate (2) has a contact area ratio of the front surface in contact with the wooden substrate (2) and a contact area ratio of the back surface in contact with the floor base material, respectively. The soundproof floorboard for scraping construction according to claim 1, wherein the soundproof floorboard is a foamed synthetic resin sheet (3) having convex (4,5) portions in the range of 40 to 50%.