JP5131731B2 - Roof insulation - Google Patents

Description

  The present invention relates to a roof heat insulating material suitable for a heat insulating material for a roof of a building constructed by, for example, an external heat insulating method.

Conventionally, for example, in the outer heat insulation method of a wooden frame, the construction of the roof foundation is performed by installing a heat insulating material 52 on a rafter 51 and then attaching a ventilation rafter 53 on the rafter 51, as shown in FIGS. A structure in which the space between the ventilation rafters 53 is made into a ventilation layer 55 by attaching a field board 54 to the top is to be constructed twice with the rafters 51 and the ventilation rafters 53 in comparison with the inner heat insulation method. It took time and effort. Thus, a technique has been proposed in which a ventilation groove is formed in the heat insulating material, thereby omitting the construction of the ventilation rafter. For example, in the technique of Patent Document 1, a technique is disclosed in which a foamed resin heat insulating material having a plurality of air passages penetrating the lower surface of the field ground material is disclosed. The technology of Document 1 is further improved, and a rafter fitting groove is formed on the lower surface of the foamed resin heat insulating material to prevent a decrease in heat insulating property due to discontinuity of the heat insulating material.
JP 2004-116191 A JP 2006-233594 A

  However, since all of the above technologies are roof panels in which a field material and a heat insulating material are integrated, when a roof panel is attached to a rafter at the site, the field material is changed from the field material to the rafter. You must drive in a metal fitting such as a screw. For this reason, a screw or the like which is longer by the thickness of the field material is selected and used, and there has been a problem that the driving operation becomes difficult due to the longer screw or the like. On the other hand, if the heat insulating material and the field ground material are separated, it is easy to fix the heat insulating material to the rafters, but when the craftsman walks on the heat insulating material until the field ground material is attached, Depending on the thickness of the heat insulating material, the strength may be insufficient and the heat insulating material may be cracked or broken.

  In general, the interval between rafters is usually 455 mm in the housing of a shank module, but there are variations in construction due to the dimensions of the wood itself used for the rafters and the deformation of the wood itself. Since the length of is not uniform, if there is an error with the rafter fitting groove formed on the lower surface (indoor side) of the heat insulating material, the rafter will come into contact with the heat insulating material part other than this rafter fitting groove There was a problem that a rafter could not be constructed in this rafter fitting groove.

  Therefore, the present invention makes it easy for craftsmen to work on site even when the heat insulating material is installed on the rafter as a roof base, even if the heat insulating material and the field ground material are separate from each other. Alternatively, it is an object of the present invention to be able to work by absorbing even if there is some variation in the spacing between the rafters due to the deformation of the rafters themselves.

In order to achieve the above object, the present invention provides a foamed polystyrene foam roof insulation material having a plurality of rafter fitting grooves on the lower surface and a plurality of ventilation grooves on the upper surface, in the vertical direction of the roof insulation material. On the intermediate surface, a reinforcing surface material made of a net material integrated with a heat insulating material by a mold molding machine is disposed, and the side wall of the rafter fitting groove is inclined in a direction in which the groove width widens downward. Face to face.

In this way, if the reinforcing surface material is integrated with the intermediate surface in the vertical direction of the heat insulating material, the necessary strength is secured even if the craftsman gets on top during the construction on site, and the work of fixing the heat insulating material to the rafter, or Work on fixed insulation can be performed easily.

Here, as a material of the heat insulating material made of foamed resin, for example, foamed polystyrene foam foam, extruded polystyrene foam, rigid urethane foam, semi-rigid urethane foam, phenol foam, foamed polyethylene foam foam, foamed polypropylene, etc. Synthetic resin foams such as foam foam are applicable,
Reinforcing surface materials include, for example, K liner paper, kraft paper, and core materials such as core paper, metal foils such as aluminum, iron, and copper, synthetic resin films and sheets, non-woven fabrics, cotton and jute Flexible face materials such as natural fiber nets such as organic fiber nets such as nylon and polyethylene can be preferably used, and these face materials may be used alone or with multiple face materials laminated. Can be used. In addition, the thickness of the reinforcing face material is preferably about 0.05 to 2.0 mm.

And as a method of integrating a reinforcing surface material with a heat insulating material, both are integrally molded with a metal mold molding machine.

Further, by making the side wall of the rafter fitting groove into a tapered surface inclined in the direction in which the groove width widens downward, the rafter dimensions are slightly different from a predetermined value, and the rafter interval is slightly different from the specified value. Even if they deviate, they can be absorbed.

  In other words, when the rafter width is narrower than the rafter fitting groove of the heat insulating material, it can be constructed without any problem, and even when the rafter width is wider than the rafter fitting groove of the heat insulating material, the taper shape can reach the predetermined fitting depth. Since the thin-walled region spreads, a part of the heat insulating material is easily crushed to a predetermined depth, so that it can be normally fitted.

In addition, in the middle surface of the up-and-down direction of the roofing insulation material, by integrating the reinforcement surface material, craftsmen Ru can be easily performed more safely work even riding on top in the field at the time, for example, the roof of the base construction .

By integrating the reinforcing surface material into the intermediate surface in the vertical direction of the heat insulating material, work on site can be performed safely and easily.

  Moreover, even if there are variations in the rafter dimensions and rafter spacing, the rafter fitting groove side walls can be tapered so that it can be efficiently constructed.

  Embodiments of the present invention will be described with reference to the accompanying drawings.

  Here, FIG. 1 is an explanatory view of a heat insulating material for a roof in which the side wall of the rafter fitting groove is a tapered surface, FIG. 2 is an explanatory view of a state in which the rafter is fitted into the rafter fitting groove, and FIG. FIG. 4 is an explanatory view of a roof heat insulating material having a lower surface reinforced, and FIG. 4 is an explanatory view of a roof heat insulating material in which a vertical intermediate surface is reinforced with a reinforcing surface material.

  For example, when the heat insulating material for a roof according to the present invention is constructed as a roof base of a building in an outer heat insulating method, the strength of the heat insulating material is improved even if the heat insulating material and the field ground material are separate. Therefore, craftsmen can work easily on site, and even if there are variations in rafter dimensions and rafter spacing, they can be absorbed and efficiently constructed.

  That is, as shown in FIG. 1, the heat insulating material 1 for roof according to the present invention has a plurality of ventilation grooves 2 extending in the vertical direction (outdoor direction) on the upper surface and the vertical direction (indoor direction) on the lower surface. Are provided with a plurality of rafter fitting grooves 3 extending into the rafter, and the rafter fitting grooves 3 are fitted to the rafters 4 as shown in FIG. By doing so, the ventilation layer 6 is formed between the base plate 5 and the heat insulating material 1.

  Here, when the material of the heat insulating material 1 is cut out from the block slab and formed into a desired shape, the foamed polystyrene foam, the rigid urethane foam, the semi-rigid urethane foam, the phenol foam, the foamed polyethylene foam, A foamed polypropylene foam or the like is applicable, and in the case of molding by a mold molding machine, an extruded polystyrene foam or the like can be applied in addition to the above materials.

  In general, the slope of the roof of the wooden frame structure is about 3 inches, but the thickness of the ventilation layer 6 for ensuring the ventilation of the roof with this gradient is required to be at least 10 mm. As long as the shape of the layer 6 can ensure about 10 mm or more in thickness, groove width etc. are arbitrary.

  Here, the side wall of the rafter fitting groove 3 formed on the lower surface of the heat insulating material 1 is a tapered surface t that is inclined downward in the direction in which the groove width increases.

  The taper surface t is for absorbing a dimensional error of the rafter 4 itself or a variation in the interval between the rafters 4 caused by deformation of the rafter 4 itself. When the rafter 4 is narrower than the rafter fitting groove 3, As shown in FIG. 2 (a), the construction can be performed as it is, and when the size of the rafter 4 is larger than a predetermined value or there is an error in the relative position between the rafter 4 and the rafter fitting groove 3, 2 (b), since the heat insulating material 1 is a synthetic resin foam, the thickness up to a predetermined fitting depth in the vicinity of the groove bottom portion of the tapered surface t is reduced, and this portion is easily crushed. Since it can be easily fitted to the fitting depth of, it is possible to construct in this case as well.

Here, Table 1 shows the result of confirming the relationship between the taper angle of the taper surface t and the rafter interval. The heat insulating material 1 is made of expanded polystyrene foam and has a density of 20 kg / m ³ , a length of 455 mm, a width of 910 mm, and a thickness of 90 mm. The rafter interval is 455 mm, and the heat insulating material 1 is placed on the rafter. It installed and confirmed on the assumption that a person with a weight of 70 kg walks on the heat insulating material 1. FIG. In addition, ◯ shown in Table 1 is a state in which the heat insulating material 1 is installed on the rafter in the same manner as before a person walks because the heat insulating material 1 is not cracked or cracked. Is a state in which the heat insulating material 1 is cracked and one end of the heat insulating material 1 is installed on the rafter without coming into contact with the rafter, and x is a crack in the heat insulating material 1 and its upper crack is also It is in a state where both ends of the heat insulating material 1 are installed on the rafter without contacting the rafter.

  As a result, when the taper angle was 30 to 45 degrees, it was confirmed that the dimensional variation between the rafters could be absorbed up to about ± 10 mm. However, if the taper angle is too small, the heat insulation performance is adversely affected. It is considered that the degree is preferable.

  Next, in order to reinforce the strength of the heat insulating material as described above, a configuration example in the case where the reinforcing face material 7 is integrated will be described.

  Such a reinforcing surface material 7 is, for example, for ensuring safety even when a craftsman rides on the heat insulating material 1 at the work site, and does not increase in weight. In order to facilitate the work when integrating into one, for example, K liner paper, kraft paper, paper material such as core paper, metal foil such as aluminum, iron or copper, synthetic resin film or sheet Flexible surface materials such as non-woven fabrics, natural fiber nets such as cotton and jute, and organic fiber nets such as nylon and polyethylene can be preferably used. These face materials may be a laminate of a plurality of face materials.

  And if such a reinforcing surface material 7 is integrated with the lower surface of the heat insulating material 1 as shown in FIG. 3 or integrated with the intermediate surface in the vertical direction as shown in FIG. For example, even when a person rides on the heat insulating material 1, the heat insulating material 1 is less likely to be broken (here, “breakage” is a state in which the heat insulating material 1 is broken).

  In the present embodiment, not only the lower surface of the heat insulating material 1 but also both side surfaces are integrated.

Here, in order to confirm the strength when the reinforcing surface material 7 is integrated with the lower surface of the heat insulating material 1, various properties such as the material and basis weight of the reinforcing surface material 7 are changed. It is made of foam and has a density of 20 kg / m ³ , a length of 455 mm, a width of 910 mm, and a thickness of 90 mm. The reinforcing face material 7 is attached to the lower surface of the heat insulating material 1 with an adhesive, and a person weighing 70 kg Confirmed assuming walking on the top.

As a result, when the reinforcing surface material 7 is a paper surface material such as K liner paper, kraft paper, or core paper, the basis weight is 75 g / m ² or more, and the PP-based nonwoven fabric or PET-based nonwoven fabric has a basis weight of 50 g / m. If it was ² or more, it could be confirmed that the heat insulating material 1 did not cause breakage, but the basis weight was 50 g / m ² with kraft paper, and the basis weight was 40 g / m ^{2 with} PP nonwoven fabric or PET nonwoven fabric. It was found that the thermal insulation material was easily destroyed, and the basis weight of the PE nonwoven fabric was 50 g / m ² and the basis weight of the glass nonwoven fabric was 50 g / m ² and 70 g / m ^2. It has been found that the insulation is susceptible to destruction.

  In addition, when integrating the reinforcing surface material 7 with the lower surface of the heat insulating material 1, after the heat insulating material 1 is cut out from the block slab, it may be attached with an adhesive or a pressure sensitive adhesive, or integrally formed with a mold molding machine. However, when integrally molding with a mold molding machine, in particular, when the heat insulating material 1 is a foamed polystyrene foam, it is necessary to apply steam at the time of molding. It is desirable to use a breathable nonwoven fabric. In order to securely bond the reinforcing face material 7 to the heat insulating material 1 at this time, it is preferable to apply an adhesive to the nonwoven fabric in advance. An SBR rubber (styrene butadiene rubber) system having good compatibility with the foam is preferred.

  In addition, when the heat insulating material 1 is a hard or semi-rigid urethane foam, since the heat insulating material 1 itself has self-adhesiveness, there is no restriction | limiting of the material of the reinforcement surface material 7. FIG.

  Moreover, when the heat insulating material 1 is a phenol foam, since gas is generated at the time of molding, the reinforcing face material 7 is preferably a material having air permeability. However, in this case, since the heat insulating material 1 is self-adhesive, no adhesive is necessary.

  Next, as shown in FIG. 4, the case where the reinforcing surface material 7 is integrated with the intermediate surface of the heat insulating material 1 in the up-down direction will be described. In this case, it is necessary to integrally mold the two with a mold molding machine, but it is preferable to use the reinforcing face material 7 as a net material from the viewpoint of smooth filling of the molding material into the mold. Further, the phrase “integrating the reinforcing surface 7 with the intermediate surface in the vertical direction of the heat insulating material 1” here means that the reinforcing surface material is provided continuously from the end of the heat insulating material 1 to the other end. For example, as shown in FIG. 4, the reinforcing surface material 7 may be continuous from the end of the heat insulating material 1 to the other end, or may be continuous even if it is not a straight line. .

  Therefore, the strength when the reinforcing surface material 7 is integrated with the intermediate surface of the heat insulating material 7 was confirmed in relation to the net.

  Here, as the reinforcing face material 7, a natural fiber net such as cotton or jute, an organic fiber net such as nylon or polyethylene, or a net of other materials is used, and the size of the net stitch ( It confirmed using the thing of 10 * 10 mm-100 * 100 mm as a mesh. In addition, the method of knitting the net was confirmed by a raschel knitting, a double raschel knitting, a knotted knitting, an integral molding (no knitting) or the like.

  As a result, for natural fiber nets such as cotton and jute, and organic fiber nets such as nylon and polyethylene, the required strength is 15 × 15 mm to 50 × 50 mm and the melting point is 100 ° C. or higher. However, for example, a polyethylene material having a mesh size of 100 × 100 mm or a glass material having a mesh size of 15 to 15 mm is easily damaged by the heat insulating material 1 and EVA. It was found that a material having a mesh size of 25 to 25 mm is not preferable because the net is deformed when the heat insulating material 1 is molded and the heat insulating material 1 is also easily broken.

  It was confirmed that the method of knitting the net was arbitrary.

Above it or found, for example, as thermal insulation 1 as shown in FIG. 3 (a), the material of the insulation material 1 and expanded polystyrene foam, as the molding method, was cut out from the block, K liner basis weight 140 g / m ² It has been found that it is effective to attach the reinforcing face material 7 made of paper to the lower surface with an adhesive.

Also, as thermal insulation 1 as shown in FIG. 3 (b), the material of the insulation material 1 and expanded polystyrene foam, as a molding method, so as to integrally formed with the reinforcing face member 7 by die molding machine, reinforcing It has been found that it is also effective to apply a PET non-woven fabric having a basis weight of 50 g / m ² as the face material 7 and previously apply an adhesive made of SBR rubber thereto.

As an embodiment according to the present invention, as the heat insulating material 1 as shown in FIG. 4, the material of the heat insulating material 1 is foamed polystyrene, and as a forming method, it is molded integrally with the reinforcing face material 7 by a mold molding machine. Thus, the reinforcing face material 7 is a polyethylene net having a mesh size of 25 × 25 mm.

  The construction of the heat insulating material 1 as described above facilitates the construction of the roof, can further enhance the safety of craftsmen in the field work, and can absorb rafter dimensional errors and rafter spacing variations. Can work efficiently.

  The present invention is not limited to the above embodiment. What has substantially the same configuration as the matters described in the claims of the present invention and exhibits the same operational effects belongs to the technical scope of the present invention.

  In particular, when constructing the roof of a building with an external insulation method, it is possible to improve the efficiency of on-site work by absorbing the dimensional error of the rafters and the variations between the rafters, and to further enhance safety. Is expected to be used.

Explanatory drawing of insulation for roof with tapered side wall of rafter fitting groove Explanatory drawing of a state in which rafters are fitted in rafter fitting grooves Explanatory drawing of the insulation for roofs with the bottom surface reinforced with reinforcing face materials Explanatory drawing of insulation material for roof with reinforcing surface material reinforced in the vertical intermediate surface A perspective view with a part of a conventional roof base broken away Front view of conventional roof base

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Roof heat insulating material, 2 ... Ventilation groove, 3 ... Rafter fitting groove, 4 ... Rafter, 7 ... Reinforcement surface material, t ... Taper.

Claims (1)

A foamed polystyrene foam roof insulation material having a plurality of rafter fitting grooves on the lower surface and a plurality of ventilation grooves on the upper surface,
On the intermediate surface in the vertical direction of the heat insulating material for the roof, a reinforcing surface material made of a net material integrated with the heat insulating material by a mold molding machine is disposed ,
The heat insulating material for roofs, wherein the side wall of the rafter fitting groove has a tapered surface inclined downward in a direction in which the groove width increases.

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