JP2012246662A - Sub-floor material and floor material structure using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sub-floor material suitable for remodeling of a directly-stuck floor of a condominium and the like, and a floor material structure using the same.SOLUTION: When a new floor material 3 is overlaid and stuck on an existing floor material 1, a sub-floor material 2 is interposed between the existing floor material 1 and the new floor material 3. The sub-floor material 2 is characterized in that a first wood base material 11, a synthetic resin foam 12, and a second wood base material 13 are stacked in order and joined together. A floor material structure uses the sub-floor material.

Description

  The present invention relates to a floor base material used at the time of renovation of a building and a floor material structure using the floor base material, and more particularly to a floor base material suitable for renovating a directly pasted floor in an apartment or the like and a floor material structure using the floor base material.

  In general housing, when renovating the interior floor, a method of pasting a new flooring after removing the existing flooring and a method of pasting a new flooring on the existing flooring There are two methods.

  In the former method, it takes a lot of time and labor to remove the existing flooring material, and in addition, there is a problem that a large amount of waste material is generated in the removal method. There is an advantage that can be solved.

  Patent Document 1 discloses a wooden floor material in which a new floor material is fixed on an existing floor material with nails such as staples, a manufacturing method thereof, and a floor material construction method.

JP 2002-155617 A

  The wooden floor material disclosed in Patent Document 1 is a floor material having a special shape composed of an upper plate material and a lower plate material bonded with an adhesive or double-sided tape, and the lower plate material side is attached to an existing floor material by nails such as staples. It is fixed.

  Since the above-mentioned method has been conceived exclusively for pasting on existing flooring materials, it requires learning of construction techniques that are different from ordinary flooring materials. Furthermore, since the wooden flooring itself has a special thin shape, there is a problem that processing is very difficult. Therefore, there is a demand for a method of using a normal floor material as it is for top bonding.

  Then, an object of this invention is to propose the flooring structure for renovation which can paste a normal flooring material as it is, and the floor base material used for it.

  As a result of studying a method for pasting a normal directly pasted floor, the present inventor has obtained the following knowledge.

  (A) In order to give soundproofing performance to floor materials such as ordinary direct-bonded floors in apartments, a cushion material made of foamed resin or nonwoven fabric is pasted on the back surface of the wooden base material. Therefore, when a new floor material having cushioning properties is further pasted on the existing floor material having cushioning properties, the feeling of walking is deteriorated. Moreover, the problem of unevenness and unevenness occurs during long-term use.

  (B) Since the floor surface rigidity is reinforced by interposing the floor base material between the existing floor material and the new floor material, the new floor material having cushioning properties is added to the existing floor material having cushioning properties. The feeling of walking when the top is pasted is improved.

  As a result of further investigation and intensive research on the floor base material interposed between the existing floor material and the new floor material, the present inventors have obtained the following knowledge.

  (C) Since the floor base material is used for the purpose of strengthening the surface rigidity of the floor, a certain degree of rigidity is required. However, if the material is too rigid, the floor base material is used for floor construction. It becomes necessary to cut with a circular saw or the like in accordance with the shape of this, which not only causes noise and dust, but also reduces work efficiency. Therefore, it is desirable that the floor base material is made of a material that can be cut with a cutter while having a certain degree of rigidity.

  (D) The floor base material is desired to be lightweight from the viewpoint of improving work efficiency.

  This invention is made | formed based on such knowledge, and makes a summary the floor base material shown to following (1), and the flooring structure for renovation shown to (2)-(4).

(1) When a new flooring is pasted on an existing flooring, a floor base material interposed between the existing flooring and the new flooring,
A floor base material comprising a first wood base material, a synthetic resin foam and a second wood base material, which are laminated and joined in order.

(2) When a new flooring is pasted on an existing flooring, a flooring structure for renovation in which a floor base material is interposed between the existing flooring and the new flooring,
A floor covering structure for reforming, wherein the floor base material described in (1) is used.

  (3) The flooring structure for reforming as described in (2) above, wherein the existing flooring and the new flooring are flooring having cushioning properties.

  (4) The flooring structure for reforming as described in (2) or (3) above, wherein the existing flooring and the new flooring are flooring having soundproof performance.

  According to the present invention, it is possible to obtain a flooring structure that has a good walking feeling and is less likely to cause unevenness or unevenness. If the flooring structure of the present invention is applied to the floor of a general house, it is not necessary to remove the existing flooring, so the construction period can be shortened and the generation of waste material can be reduced. Furthermore, the floor base material of the present invention can be cut with a cutter, and is lightweight and easy to carry, so that the work efficiency at the site can be improved. Therefore, the flooring structure of the present invention and the floor base material used therefor are optimal when renovating an apartment or the like.

It is a perspective view which shows an example of the state in the middle of construction by the flooring structure of this invention. It is the figure which showed typically the cross section of the floor base material of this invention.

  FIG. 1 is a perspective view showing an example of a state in the middle of construction by the flooring structure of the present invention. The floor material structure of the present invention includes an existing floor material 1, a floor base material 2, and a new floor material 3. Details of each component will be described below.

1. Existing floor material Although there is no restriction | limiting in particular about the existing floor material 1 which constructs the floor material structure of this invention, As a suitable existing floor material, for example, the directly pasted soundproof floor (lightweight floor which consists of a decorative material, a wooden base material, and a cushion material) Examples of the flooring material having cushioning properties such as impact sound and LL-60 or better than that, that is, a material having soundproofing performance equal to or higher than LL-60) or a plastic sheet flooring such as cushion floor. .

2. Floor base material By interposing the floor base material 2 between the existing floor material 1 and a new floor material 3 to be described later, the floor rigidity of the floor can be enhanced and the walking feeling can be improved.

  FIG. 2 is a view schematically showing a cross section of the flooring structure of the present invention. The floor base material 2 of the present invention is characterized in that a first wooden substrate 11, a synthetic resin foam 12, and a second wooden substrate 13 are laminated in order and joined.

  About a 1st wood base material and a 2nd wood base material, a plywood, a wood fiber material, a particle board, a laminated material etc. can be used, for example. From the viewpoint that cutting with a cutter is easy, it is preferable to use a softwood material having a specific gravity of 0.5 or less as a material used for the above-mentioned wood base material. However, when softwood plywood or softwood laminated timber is used, it is limited to a smooth material with no gaps on the surface in consideration of adhesion to other flooring materials.

  As for the synthetic resin foam, for example, a synthetic resin foam such as styrene, urethane, polypropylene, or polyethylene can be used. Among them, it is most preferable to use foamed styrene having excellent heat insulation.

  Although there is no restriction | limiting in particular about the expansion ratio of a synthetic resin foam, In order to ensure compressive strength, it is preferable that it is 20 times or less, and it is more preferable that it is 15 times or less. On the other hand, if the expansion ratio is too low, cutting with a cutter becomes difficult and the weight increases, and therefore it is preferably 5 times or more.

  As a method for joining the three layers of the first wooden base material, the synthetic resin foam and the second wooden base material, for example, an adhesive or a double-sided tape can be used.

  Although there is no restriction | limiting in particular about the thickness of a floor base material, In order to cut | disconnect easily with a cutter, it is preferable that it is 20 mm or less, and it is more preferable that it is 10 mm or less. On the other hand, in order to ensure the surface rigidity of the floor, the thickness of the floor base material is preferably 5 mm or more.

  The ratio of the thickness of the synthetic resin foam to the total thickness of the floor base material is not particularly limited, but is preferably 40 to 80%. If the proportion of the thickness of the synthetic resin foam having a low specific gravity is less than 40%, the weight of the entire floor base material increases, and cutting with a cutter becomes difficult. On the other hand, when the proportion of the thickness of the synthetic resin foam exceeds 80%, the floor base material has poor rigidity.

  Further, regarding the size, if the surface is too small, the surface rigidity becomes small, and if the size is too large, it may be difficult to perform the construction. For example, it is preferable to use one having a width of 900 mm and a length of 900 mm, or a width of 900 mm and a length of 1800 mm.

  By adopting the configuration as described above, it is possible to realize a lightweight floor base material that can secure rigidity and can be cut with a cutter. For example, a total thickness of 10 mm using a first wood base material and a second wood base material having a thickness of 2.5 mm and a specific gravity of 0.5, and a synthetic resin foam having a thickness of 5 mm and a specific gravity of 0.1. The floor base material according to the present invention can reduce the mass by 40% as compared with a floor base material made of only a wood base material having a thickness of 10 mm and a specific gravity of 0.5.

  Adjacent floor base materials are preferably fitted together. In actual fitting, the contact surface between adjacent floor base materials is used as an actual processing convex part and an actual processing concave part, and the actual part that inserts the convex part into the concave part and joins them together or both are used as the actual processing concave part. Alternatively, it is also possible to use an employment fact in which a thin plate is inserted into the recess to join the two together.

  Affixing to the existing flooring 1 can be appropriately performed using an adhesive, a double-sided tape, screws, staples, or a combination thereof. If screws are used and the existing flooring is a directly-adhesive soundproof floor consisting of a decorative material, a woody base material and a cushioning material, the effect of fixing will weaken once the screw reaches the cushioning material. Is preferably adjusted to a length that stops at the wooden base portion of the soundproof floor.

3. New floor material There is no restriction | limiting in particular about the new floor material 3, The floor material of a general wooden base material can be used. The new flooring preferably has cushioning properties. Examples of the flooring material having cushioning properties include a directly attached floor in which a decorative material, a wooden base material, and a cushioning material are combined, and a plastic sheet flooring composed of a single resin such as a cushion floor.

  Examples of the decorative material used for the directly attached floor include a veneer, a resin sheet, a resin-impregnated paper, and a printing paper. Moreover, as a wooden base material, a plywood, a wooden fiber material, a solid material, a laminated material, or these combination can be used suitably. As the cushion material, for example, a foamed resin or a nonwoven fabric can be used.

  Moreover, it is preferable that the new flooring has a soundproofing performance. Having soundproofing performance means that it is LL-60 or more in lightweight floor impact sound. A preferable soundproof performance is LL-50 or higher, a more preferable soundproof performance is LL-45 or higher, and a more preferable soundproof performance is LL-40 or higher.

  The top bonding to the floor base material 2 can be performed with an adhesive or a double-sided tape.

  According to the present invention, it is possible to obtain a flooring structure that has a good walking feeling and is less likely to cause unevenness or unevenness. If the flooring structure of the present invention is applied to the floor of a general house, it is not necessary to remove the existing flooring, so the construction period can be shortened and the generation of waste material can be reduced. Furthermore, the floor base material of the present invention can be cut with a cutter, and is lightweight and easy to carry, so that the work efficiency at the site can be improved. Therefore, the flooring structure of the present invention and the floor base material used therefor are optimal when renovating an apartment or the like.

1. Existing flooring2. Floor base material3. New flooring4. Concrete slab11. First wood base 12. Synthetic resin foam 13. Second wood substrate

Claims (4)

When pasting a new flooring on the existing flooring, it is a floor base material interposed between the existing flooring and the new flooring,
A floor base material comprising a first wood base material, a synthetic resin foam and a second wood base material, which are laminated and joined in order. When pasting a new flooring on an existing flooring, it is a flooring structure for renovation in which a floor base material is interposed between the existing flooring and the new flooring,
A floor structure for reforming, wherein the floor base material according to claim 1 is used.   The floor structure for renovation according to claim 2, wherein the existing floor material and the new floor material are floor materials having cushioning properties.   The floor structure for renovation according to claim 2 or 3, wherein the existing floor material and the new floor material are floor materials having soundproof performance.

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