JP2000328690A - Heat insulation board with incision for floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heat insulation board excellent in size adaptability by providing parallel slits at the peripheral sides of the rear face of an inorganic fibrous thick heat insulation board to give breadthwise elasticity and facilitating formation of a recess engaging with a sleeper. SOLUTION: Slits 21, 22, 25 are formed at a specified depth on the rear face of a heat insulation board 1 formed to be thick and rectangular and breadthwise elasticity is given to it to absorb dimensional errors or a little fluctuation between sleepers and obviate the need for dimensional adjustment by cutting off the end even if a superfluous length generates in the breadthwise direction. When the heat insulation board is engaged with the sleeper 4, the outer side than the slits 21, 22 is peeled off in the end thereof and a part between the slits 25, 25 is peeled off at the middle part to form recesses X, Y. In this case, the left part G is made slightly thicker than the height of the sleeper so as not to generate a hollow. In this way, the board can be easily stuck closely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating board formed by solidifying an inorganic fibrous substance such as glass wool or rock wool into a plate shape, and particularly to a fiber heat insulating board used for heat insulation of a floor.

[0002]

2. Description of the Related Art As a conventional heat insulating board for a floor, there are many heat insulating boards of a foamed resin type, and a heat insulating board having a thickness of 40 mm to 50 mm is mainly used. On the other hand, in the floor structure of a conventional wooden house, the height of the joist is usually 45 mm, and the on-site construction is relatively easy by holding a foamed resin-based heat insulating board between the joists, but the non-combustibility of the house is high. As a result, the use of heat insulating boards made of inorganic fibers such as glass wool has increased.

In particular, in recent years, from the viewpoint of nonflammability and energy efficiency such as cooling and heating, the thickness of insulating boards used in wooden houses in cold regions as well as in other regions has been increasing. For example, taking the standard of floor insulation in the IV area as an example, the density of glass wool is 32 kg / m.
³ is 40 mm in the new standard of 1992,
It is 79 mm in the next-generation standard of the year. On the other hand, in the conventional floor insulation construction, as shown in FIGS. 8 and 9, the insulation board 1 is laid between a large number of joists 5 arranged on the large pulley 4, and a floor material (not shown) is placed thereon. Laying methods are widely used.

[0004]

In the above prior art, the height of the joist is usually about 42 to 90 mm, so that the thickness of the heat insulating board is limited to the same or slightly thicker than the joist. The thickness of, for example,
It cannot be about 60 to 200 mm, and cannot satisfy the above demands of the prior art. As a method for satisfying such demands, it has been proposed to insert a heat insulating board between adjacent pulleys. However, this method requires many accessories and has many steps and is practical. is not.

As a method for solving the above-mentioned problem, the thickness of the heat insulating board is made larger than the thickness of the joist (height from the pull), and a cutout or a channel-like groove is formed at a position where the heat insulating board hits the pull. Then, a method has been proposed in which a large corner or top is fitted into these cutouts or channel grooves to make the surface of the heat insulating board similar to the surface of the joist (see Japanese Patent Application Laid-Open No. Hei 5-163826). This method is an excellent method in that the thickness of the heat insulating board can be increased without changing the combination of the conventional pulling and joist. However, since the production of the heat insulating board is mass production, the depth of the notch or the groove is constant, and therefore, when the thickness (height) of the joist varies, it is necessary to cope with the variation. When the floor material is laid last, a space is generated between the surface of the heat insulating board and the back surface of the floor material, and there is a problem that the heat insulation may be reduced due to the flow of air in the space. Such insulation defects cannot be found after laying the flooring, resulting in a large energy loss in the long term.

In addition to the above-mentioned method, other conventional methods also have dimensional adaptability due to the high elasticity of the foamed resin-based heat insulating board when there is variation in the spacing between adjacent joists. By using a somewhat wider insulation board, the above variation can be absorbed.However, although the insulation board in which the inorganic fiber-based insulation material such as glass wool is solidified into a board shape has excellent elasticity in the thickness direction, The elasticity in the width direction is small, and it is difficult to compress the heat insulation board in the width direction and fit the insulation board between the joists. Accordingly, it is necessary to adjust the width of the heat insulating board to an appropriate width by shaving the end of the heat insulating board at the construction site. However, since the heat insulating board is formed thick, it is difficult to adjust the width. Further, at this time, there is a problem that fragments of the inorganic fibers are scattered and a so-called "tingling" feeling is generated, and the working environment is deteriorated. Accordingly, an object of the present invention is to provide a fiber-based heat insulating board which is excellent in workability, has no gap between itself and the back surface of the floorboard, and has excellent dimensional adaptability to joists, despite being a thick heat insulating board. It is to be.

[0007]

The above object is achieved by the present invention described below. That is, the present invention relates to a heat insulating board, which is laid on a floor set composed of an omission and a joist, in which an inorganic fiber-based heat insulating material is formed into a long rectangle, a slit parallel to the short side near two short sides of the board. Are provided, respectively, to provide a fiber-based heat insulating board.

[0008]

Next, the present invention will be described in more detail with reference to preferred embodiments. 1A is a perspective view showing the entire heat insulating board of the present invention, FIG. 1B is a rear view thereof, FIG. 1C is a partially omitted enlarged sectional view seen from a long side, and FIG. 1D is a short side. It is the partial omission enlarged sectional view seen from the side. As shown in FIGS. 1 a to 1 d, the heat insulating board 1 of the present invention is formed by molding an inorganic fiber-based heat insulating material such as glass wool or rock wool into a long rectangle. The slits 21 and 22 are provided.

The illustrated heat insulating board is formed by stacking inorganic fiber based heat insulating materials of an appropriate length substantially in the longitudinal direction of the horde and bonding them with a resin binder to form a board shape. Material. In the present invention, the thickness of the heat insulating board 1 is generally 20 to 200 mm, preferably a thickness substantially larger than the height of the joist (the distance from the large-scale surface to the upper surface of the joist). For example, since the height of a normal joist is 42 to 90 mm, the thickness of the board is preferably 60 to 200 mm. If the thickness is not thicker than the height of the joists, the present invention has no significance, and if the thickness exceeds 200 mm, the workability is reduced. The density of the heat insulating board is usually 16 to 96 kg / m ³ , preferably 24 to 32 kg / m ³ . Density is 16kg / m ³
When the density is less than 96 kg / m ³ , the elasticity of the board in the width direction is further reduced, and the workability is deteriorated.

The slits 21 and 22 provided on the heat insulating board mainly characterize the present invention. The slits 21 and 22 are arranged such that the distance from the short side to these slits is の of the width of the large one. Provided at substantially equal positions. In this position, since the width of the pulling is usually 90 to 100 mm, the distance of A is approximately 45 to 50 m as shown in FIG.
m, that is, at a position approximately 45 to 50 mm from the short side, preferably parallel to the short side. In addition, the depth of each slit is preferably set to a depth that leaves at least 20 mm of the thickness of the heat insulating board when there is a surface material, and at least 30 mm when there is no surface material. Therefore, when the thickness of the board having the surface material is 60 to 200 mm, the depth of the slit is 40 to 180 mm.
If the remaining thickness is less than 20 mm, the strength of the board may be reduced due to the presence of the slit. In addition, the surface material 3,
The slits 23 and 24 will be described later.

FIG. 2 is a view for explaining another embodiment of the present invention. FIG. 2a is a perspective view showing the entire heat insulating board of the present invention, and FIG. 2b is a rear view thereof. 2c is a partially omitted enlarged sectional view seen from the long side, and FIG. 2d is a partially omitted enlarged sectional view seen from the short side. The example shown in FIG. 2 is an example in which, in the example shown in FIG. 1, two more slits 25 are formed in the vicinity of the center of the longer side so as to be orthogonal to the longitudinal direction of the longer side. Same as in the case.

FIG. 3 is a diagram for explaining a method of using the heat insulating board shown in FIG. FIG. 3a is a partially omitted enlarged sectional view as viewed from the long side of the heat insulating board. First, the portion X shown in FIG. 3A is peeled off at the time of construction, and the board ends are cut off as shown in FIG. 3B. Since the heat insulating board 1 made of inorganic fibers is stacked with the length direction of the fibers substantially the same as the length direction of the board and is lightly adhered with a resin binder, the stripping of the fibers in the X portion is performed by slitting. Due to the provision of 21, the fiber is cut in its length direction, so that the required thickness can be easily stripped off with the fingertip. At this time, stripping is performed so that the thickness of the portion G that has not been stripped remains several mm thicker than the height of the joist. In this way, when the floor material is finally stretched on the heat insulating board, the floor material compresses the upper surface of the heat insulating board and fixes the floor material, and there is some variation in the height of the joist. Even if there is, it is possible to absorb the variation and prevent a gap from being generated between the front surface of the heat insulating board and the back surface of the flooring material. Therefore, for the above reason, the depth of the slit 21 needs to be equal to or greater than the above-mentioned stripping thickness H.

Next, as shown in FIG. 3C, the formed notch is brought into contact with the corner of the large pulley 4,
Both ends of the board 1 are held between the adjacent pulleys 4. FIG. 4 shows a state in which the heat insulating board 1 is held between the pulleys 4 as described above. As shown in the drawing, the thickness of the heat insulating board extends below the surface of the large pulley 4, and the entire thickness is considerably thicker than the height of the joist 5. In FIG. 4, the length of the heat insulating board is shortened for convenience of drawing.

FIG. 5 is a diagram for explaining a method of using the heat insulating board shown in FIG. FIG. 5a is a partially omitted enlarged cross-sectional view as viewed from the long side of the heat insulating board. First, the X and Y portions shown in FIG. 5A are peeled off at the time of construction, and the ends and the center of the board are partially cut off as shown in FIG. 5B. Stripping of the X and Y portions is the same as that described with reference to FIG. Next, as shown in FIG. 5C, the formed notches at the ends and the center are brought into contact with the corners of the large pulleys 4 on both sides, and the above-described central cutouts are fitted into the large pulleys 4 at the center. The two ends and the center of the board 1 are held by three large pulls 4. FIG. 6 shows a state where the heat insulating board 1 is held by the three large pulleys 4 as described above. As shown in the figure, the thickness of the heat insulating board extends below the surface of the large pulley 4, and the entire thickness is considerably thicker than the height of the joist 5. In FIG. 5, for convenience of drawing,
The length of the insulation board is shortened. Each of the slits 21, 22, and 25 in the above description may be, for example, a simple cut by a cutter or the like, and the width of the slit is not particularly limited.

Next, the slits 23 and 24 shown in FIGS. 1 and 2 will be described. As described above, the heat insulating board 1 is stretched between the pulleys 4 and one or a plurality of boards are laid between adjacent joists, but the interval between the joists is not always constant, and many There are some variations in the case. For this purpose, the board is usually formed to be somewhat wide, and it is necessary to prevent a gap from being formed at the contact portion between the joist and the boat and the contact portion between the board ends. However, although the insulation board made of inorganic fiber has elasticity in the thickness direction, it has little elasticity in the width direction, so when installing the board, it is necessary to cut off the excess width board and adjust the board width In addition, there are many problems both in the process and in the working environment. The slits 23 and 24 shown in FIGS. 1 and 2 solve such a problem.

In the preferred embodiment shown in FIGS. 1 and 2,
At least one slit parallel to the long side is formed near the long side of the board. By forming such slits, elasticity in the width direction (mainly in the direction of contraction) is imparted to the board, and a slight variation between the joists is absorbed, and the gap between the joists and the board ends and between the board ends is reduced. No voids are formed in In the examples shown in FIGS. 1, 2 and 7, a pair of slits 23 and 24 are provided on both sides near the long side in parallel with the long side, but this is a preferable example, and The number of parallel slits in the longitudinal direction of the board may be at least one, and the present invention is not limited to the illustrated example.

Referring to FIG. 7, when the board 1 is laid between the joists 5, if the board has a considerable width, as shown in FIG. And adjust the width of the board.
At this time, even if the board is thick, the portion having the slit 231 is thin, so that cutting is easy. When the board whose end is cut and the width is adjusted is pressed against the joist 5 as shown in FIG.
The presence of the slits 232 allows the board to be elastically reduced in the width direction, so that no gap is generated between the joist 5 and the board 1. The relationship between the joist 5 and the board 1 is the same when the boards are in contact with each other. The above is an example in which the board edge is cut at the position of the slit 231. However, this cut is not essential. If the board width can be adjusted by the presence of the slits 231 and 232, the above cut is unnecessary.

The slits 231 and 2 thus formed
The depth of the slit 32 is the same as that of the slits 21, 22, and 23, but the slit width is preferably about 0.5 to 10 mm, more preferably 5 to 10 mm in order to give the board an appropriate elasticity in the width direction. 8 mm. When only one of the slits 231 and 232 is provided,
The distance of the slit from the end of the board is preferably about 5 to 20 mm. In the case where two slits are provided as shown in the figure, the slit 231 is suitably at a position of 5 to 20 mm from the end, and the slit 232 is suitably at a position of about 15 to 40 mm from the end. The same applies to the slit 24 shown in the figure.

In the example shown in the drawings, the surface material 3 is provided on one side of the board. However, this surface material is not essential in the present invention, and the surface material may be omitted. A surface material may be provided on both sides. However,
In order to reduce the flexibility of the board, the moisture resistance of the board,
The surface material is preferably provided on at least one surface of the board in order to prevent deterioration of the working environment due to scattering of fiber fragments. As the surface material, for example, a plastic film, an aluminum foil, an aluminum vapor-deposited plastic film, or the like can be used.

[0020]

EXAMPLES Next, examples will be described. Example 1 A heat insulating board made of fine fiber glass wool having a density of 24 kg / m ^{3 and} having a size of 420 mm × 1820 × 80 mm and having slits 21 and 22 as shown in FIG. , 23 and 2
4 was formed. In FIG. 1c, A is 45 mm and B is 45 mm.
mm, the slit groove width was 3 mm, B in FIG. 1d was 45 mm, D was 20 mm, E was 40 mm, and the groove width of each slit was 5 mm to obtain a heat insulating board of the present invention. Using this heat insulating board, the X portion shown in FIG.
mm was peeled off, and cutouts were formed at both ends of the board. The thickness (G) of the remaining notch is about 55 mm. This heat insulating board is provided with a core-core spacing of 1820 mm and a side of 90 m.
m and a core-to-core spacing of 303 mm, laid on a floor group consisting of joists with 45 mm on each side, the width of the heat insulating board was somewhat extra, but the elasticity due to the slits 23 and 24 provided near the long side As a result, the insulation board was laid accurately and without gaps between the joists. In the state where the heat insulation board is laid, the surface of the heat insulation board is about 10 mm higher than the surface of the joist, but in this state, the floor material is fixed to the joist, so that the back surface of the floor material and the board surface below it are in close contact, and the gap There was no room for

Example 2 A heat insulating board made of glass wool having a density of 32 kg / m ^{3 and} having an 18 μm polyethylene film laminated on the upper surface thereof,
On a board of size 263mm x 1820 x 75mm,
In FIG. 2, the slits 23 and 24 were not formed, and the other slits 21, 22 and 25 were formed as shown in FIG. In FIG. 2c, A was 45 mm, B was 33 mm, the slit groove width was 3 mm, and F was 90 mm. Using this heat insulating board, the X part and the Y part shown in FIG. 5A were peeled off by 30 mm in thickness (H) to form two notches at the end and one notch at the center. The thickness (G) of the remaining portion of the notch is about 45 mm. This heat insulation board was provided with a core-core spacing of 1820 mm, a side of 90 mm, a core-core spacing of 303 mm, and a side of 43 mm.
When the board was laid with the width of the board matched to a floor set consisting of a joist of mm, the heat insulating board was laid accurately and without gaps between the joists. With the insulation board laid,
Although the surface of the heat insulating board was about 2 mm higher than the surface of the joist, the floor material was fixed to the joist in this state, so that the back surface of the floor material and the surface of the board under the floor material adhered to each other, leaving no room for voids.

[0022]

As described above, according to the present invention, despite the fact that it is a thick heat-insulating board, the workability is good, no gap is generated between the board surface and the back of the floorboard, and the dimensional adaptability to the joist is further improved. It is possible to provide a fibrous heat insulating board which is excellent in the heat resistance and can easily bring the contact portion between the end portion of the heat insulating board and the joist and the contact portion between the heat insulating board ends into close contact.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of an example of a heat insulating board of the present invention.

FIG. 2 is a diagram illustrating a configuration of a heat insulating board according to another example of the present invention.

FIG. 3 is a diagram illustrating the construction of a heat insulating board according to an example of the present invention.

FIG. 4 is a view for explaining the construction of an example of a heat insulating board of the present invention.

FIG. 5 is a view for explaining the construction of a heat insulating board according to another example of the present invention.

FIG. 6 is a diagram illustrating the construction of a heat insulating board according to another example of the present invention.

FIG. 7 is a diagram illustrating a relationship between a heat insulating board and a joist.

FIG. 8 is a view for explaining the construction of a heat insulating board of a conventional example.

FIG. 9 is a view for explaining the construction of a conventional heat insulating board.

[Explanation of symbols]

 1: Insulation board 2: Slit 3: Surface material 4: Oiki 5: Jota

Claims (8)

[Claims] (1) laying on a floor set composed of a daiki and a joist;
A fiber heat insulating board characterized in that a slit parallel to the short side is provided near two short sides of the board in a heat insulating board formed of an inorganic fiber based heat insulating material into a long rectangle. 2. The fibrous heat-insulating board according to claim 1, wherein the distance from the short side to the slit is substantially equal to 幅 of the width of the drawing. 3. The fibrous heat insulating board according to claim 1, wherein two slits are formed near the center of the long side at right angles to the longitudinal direction of the long side. 4. The fibrous heat insulating board according to claim 3, wherein the interval between the two slits near the center is substantially equal to the width of the large slit. 5. The method according to claim 1, wherein at least one slit parallel to the long side is formed near the long side.
Item 15. The fiber-based heat insulating board according to the above item. 6. The depth of each slit is a depth that leaves at least 20 mm of the thickness of the heat insulating board.
6. The fibrous heat insulating board according to any one of the above items 5. 7. The groove width of the slit parallel to the long side is 0.5 to
The fiber-based heat insulating board according to claim 5, which is 10 mm. 8. A heat insulating board having a thickness of 20 to 200 mm and a density of 16 to 96 kg / m ^3.
The fiber insulation board according to any one of the above.