JP2016199892A - Roof material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the heat insulating effect, aged deterioration resistance and sound insulation performance of a roof material.SOLUTION: A roof material 1 includes a roof body part 2 that is formed by bending metal steel plate, and a heat insulation material 3 that includes glass fibers arranged on the backside of the roof body part 2. Preferably, the heat insulation material 3 includes the glass fibers and polyolefin fibers. More preferably, the heat insulation material 3 is formed by providing heating treatment in the state of impregnation with a non-hydrophilic resin binder in addition to mixture of the glass fibers and the polyolefin fibers.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a roofing material having a heat insulating material.

  As a roof material having heat insulating properties, a roof material in which a heat insulating material made of a resin foam such as polyethylene, polystyrene, or polyurethane is interposed between a surface material made of steel and a back surface material is known (for example, Patent Document 1). ).

JP 2002-38658 A

  Conventional roofing materials tend to have a heat insulation property that gradually deteriorates due to aging deterioration and heat shrinkage of the resin foam constituting the heat insulating material. In particular, the resin foam shrinks due to the passage of air over time. The surface material of the roofing material and the surface material are guaranteed to have a useful life of about 15 years, but the heat insulating material deteriorates during this useful life. Moreover, although the roofing material provided with the heat insulating material is more excellent in the sound insulation performance of rain sound than the roofing material made only of steel, further sound insulation performance is required.

  In view of the above circumstances, an object of the present invention is to improve the heat insulating effect, aging resistance, and sound insulation performance of a roofing material.

  Then, the roofing material of this invention is equipped with the heat insulating material which contains the glass fiber arrange | positioned on the back surface of a roof main-body part and this roof main-body part.

  According to the present invention, the heat insulating effect, aging resistance and sound insulation performance of the roofing material are improved.

(A) is a perspective view of the roofing material in embodiment of invention, (b) is a side view of the vertical side edge part of the roofing material. The back side perspective view of the roofing material of the embodiment. The perspective view explaining the installation procedure of the roof material of the embodiment. The perspective view explaining the installation procedure of the roof material of the embodiment. Sectional drawing of the eaves vicinity where the roofing material of the embodiment was constructed. The characteristic view which showed the rain sound test result of the roof material of the Example and Comparative Examples 5 and 12. The characteristic view which showed the rain sound test result of the roof material of the Example and Comparative Examples 6 and 7. The characteristic view which showed the rain sound test result of the roof material of the Example and Comparative Examples 8 and 9. The characteristic view which showed the rain sound test result of the roof material of the Example and Comparative Examples 10 and 11.

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

  The roof material 1 of Embodiment 1 illustrated in FIG. 1 includes a roof main body 2 formed by bending a metal steel plate exemplified by a stainless steel plate, a copper steel plate, an aluminum steel plate, a galvalume steel plate, and the roof main body portion 2. And a heat insulating material 3 arranged and fixed on the back surface of the.

  On the back surface side of the eaves side edge of the roof main body 2, a fitting portion 21 that fits with the fitted portion 22 of the other roof material 1 when the roof material 1 is installed in the longitudinal direction of the roof main body 2. Along with this, the roof main body 2 is integrally formed. The fitting part 21 has the insertion part 211 inserted in the insertion groove 221 in the to-be-fitted part 22 of the other roof material 1 at the time of the said installation.

  On the other hand, in the vicinity of the ridge side edge of the roof main body 2, a fitted portion 22 that fits with a fitting portion 21 of another roof material 1 when the roof material 1 is installed is roofed along the longitudinal direction. It is formed integrally with the main body 2. An insertion groove 221 into which the insertion portion 211 in the fitting portion 21 of the other roof material 1 is inserted is formed in the fitted portion 22 by the process of fold-folding the roof main body portion 2.

  Further, at the ridge side edge of the fitted portion 22, a fixing portion 23 to which the fixing tool 5 is driven when the roofing material 1 is fixed to the field board 4 as shown in FIG. 5 extends in the longitudinal direction. Along with this, the roof main body 2 is integrally formed.

  Further, at one short edge portion of the roof material 1, an engagement portion 24 inserted into the engagement groove 25 in the short edge portion of the other roof material 1 when the roof material 1 is installed is the edge portion. Are formed integrally with the roof body 2. On the other hand, in the vicinity of the other short edge portion of the roof material 1, an engagement groove 25 into which the engagement portion 24 of the other roof material 1 is inserted at the time of the installation is formed along the edge portion. .

  And the heat insulating material 3 is arrange | positioned and fixed to the back surface of the roofing material 1 with the adhesive agent as shown in FIG. 1, FIG. The heat insulating material 3 comprises glass fiber. Glass wool is applied as the glass fiber.

  Specifically, the heat insulating material 3 includes glass fibers and polyolefin fibers. More specifically, a molding obtained by heat-treating a resin binder impregnated in addition to a blend of glass fiber and polyolefin fiber, and heating and cooling and then heating and cooling the laminate of the heat-treated product. It is formed by trimming the body into a predetermined shape.

  More specifically, non-hydrophilic resin fibers exemplified as polyolefin fibers are added as a resin binder, glass wool and polypropylene fibers are mixed and heat-treated, and the laminate of the heat-treated product is heated and pressurized. The heat insulating material 3 is obtained by trimming the molded body obtained by cooling and heating later to a mat shape. Then, a resin film obtained by alloying polyethylene and polyamide fibers is coated on the decorative surface of the heat insulating material 3.

  An example of the installation procedure of the roofing material 1 will be described with reference to FIGS.

  First, as shown in FIG. 3, the second roof material 1 engaging portion 24 is inserted into the first roof material 1 engaging groove 25 fixed to the base plate 4. Slide the roofing material 1 from the eave side to the ridge side. And when the one end side part of the to-be-fitted part 22 of this 1st roofing material 1 and the one end side part of the to-be-fitted part 22 of the 2nd roofing material 1 overlap, these both roofing materials 1 will be the longitudinal direction. It will be in the state engaged in the direction. Thereafter, as shown in FIG. 5, the second roofing material 1 is fixed to the field board 4 by hitting the fixing member 5 to the fixing portion 23. By repeating the above steps, as shown in FIG. 4, the plurality of roofing materials 1 are fixed to the base plate 4 in a state of being continuously engaged in the longitudinal direction.

  When installing the second roof material 1 on the ridge side, first, as shown in FIG. 4, the first roof material 1 insertion portion with respect to the insertion groove 221 of the arbitrary roof material 1 in the first step. 211 is inserted. Next, as shown in FIG. 3, when the second roofing material 1 is slid from the eaves side to the ridge side, the first roofing material 1 and the second roofing material 1 are engaged in the longitudinal direction. It becomes. The first roofing material 1 and the second roofing material 1 in the second ridge side are fixed to the base plate 4 by hitting a fixing tool 5 against the fixing portion 23. By repeating the above steps, the roof material 1 is fixed to the base plate 4 in a state in which the plurality of roof materials 1 are continuously engaged in the longitudinal direction in the second step on the ridge side.

  Then, the roof material 1 is installed on the base plate 4 of the building by repeating the above steps after the third eave side.

  Examples of the roofing material 1 will be described below.

  Table 1 shows the heat resistance test results of the heat insulating materials of Examples and Comparative Examples 1 to 4.

  The heat insulating material of an Example is a molded object whose compounding ratio of glass fiber (GF) and polypropylene fiber (PP) is GF / PP = 80/20.

The heat insulating materials of Comparative Examples 1 to 4 are heat insulating materials made of conventional materials.
The heat insulating material of Comparative Example 1 is a molded body of polystyrene foam.
The heat insulating material of Comparative Example 2 is a urethane molded body (paper is pasted on the surface).
The heat insulating material of Comparative Example 3 is a urethane molded body (paper is not attached to the surface).
The heat insulating material of Comparative Example 4 is a foamed polyethylene molded body.

  In the heat resistance test, the test products (the heat insulating materials of Examples and Comparative Examples) were heat-treated for a predetermined period of 1 day, 2 days, 3 days and 7 days in an atmosphere of 85 ° C., and then an atmosphere at room temperature (23 ° C.). The dimensional change rate of the test product after standing for 1 hour was measured.

  As is clear from the results of the dimensional change rate of each test product shown in Table 1, the heat insulating material of the example has a significantly lower dimensional change rate absolute value than the absolute value of the dimensional change rate of the comparative example. Thus, it was confirmed that the heat insulation was less than that of the conventional heat insulating material and the heat insulating performance could be maintained without thermal deterioration.

  Table 2 shows the rain sound test results of the roof materials of Examples and Comparative Examples 5 to 12.

  In the roof material of the example, a molded body having a blending ratio of glass fiber (GF) and polypropylene fiber (PP) as a heat insulating material of GF / PP = 80/20 is fixed to the back surface of the roof main body portion made of galvalume steel plate. Become.

The roofing materials of Comparative Examples 5 to 12 are conventional roofing materials.
The roofing material of Comparative Example 5 is formed by fixing a formed body of asbestos slate as a heat insulating material to the back surface of a roof main body portion made of a galvalume steel plate.
The roof material of the comparative example 6 consists only of the roof main-body part which consists of a galvalume steel plate.
The roof material of Comparative Example 7 is formed by fixing a polyethylene molded body as a heat insulating material to the back surface of a roof main body portion made of a galvalume steel plate.
The roof material of Comparative Example 8 is formed by fixing a molded body of polyvinyl chloride as a heat insulating material on the back surface of a roof main body portion made of a galvalume steel plate.
The roof material of Comparative Example 9 is formed by fixing a molded body of PET (polyethylene terephthalate) nonwoven fabric as a heat insulating material to the back surface of a roof main body portion made of a galbarium steel plate.
The roof material of Comparative Example 10 is formed by fixing a foamed urethane foam as a heat insulating material on the back surface of a roof main body portion made of a galvalume steel plate.
The roof material of Comparative Example 11 is formed by fixing a hard urethane molded body as a heat insulating material to the back surface of a roof main body portion made of a galvalume steel plate.
The roofing material of Comparative Example 12 is clay tile.

  In the rain sound test, the volume when a 1 g iron ball is dropped from a test piece (the roof material of the example and comparative example) from a height of 200 mm and collides with the test piece is measured at a position 70 mm below the test piece. did.

  As is clear from the results of the rain sound test in Table 2 and the relationship between the frequency and volume of the example and the comparative example shown in FIGS. 6 to 9, the roof material of the example is compared with the roof material of the comparative example. Thus, it was confirmed that a rain noise reduction effect of about 10 dB was obtained in the 300 to 3000 Hz band which is important for daily life.

  In particular, since it is said that the rain sound is in the 500-2500 Hz band, the roofing material of the example is significantly superior in sound insulation effect in this frequency band as compared with the roofing material of Comparative Examples 5-12. It can be confirmed from the characteristic diagrams of FIGS.

  Like the performance test result of the above Example, the roof material of this invention has implement | achieved the heat insulation effect, aged deterioration, and the improvement of the sound-insulation performance.

  Specifically, a comfortable indoor environment is maintained even in summer due to the high heat insulation performance (0.03 W / m · K) of the glass fiber constituting the heat insulating material of the present invention.

In addition, this heat insulating material can reduce rain noise due to the vibration-damping effect of the glass fiber with high sound absorption performance. The crushedness peculiar to the shape of the can be eliminated, and the beauty of the roofing material can be maintained.

  And since many of the structural components of this heat insulating material are inorganic substances, compared with conventional heat insulating materials such as polyethylene, urethane, styrene and the like, there is almost no thermal deterioration and deterioration over time in the natural environment.

  Further, since the resin binder impregnated in this heat insulating material is non-hydrophilic, the moldability and strength are enhanced, and there is almost no contamination or deterioration due to water at the time of dew condensation on the steel plate or the construction bolt.

  In addition, this heat insulating material is heat-bonded by heat treatment with a resin binder impregnated with a blend of glass fiber and polyolefin fiber, so it has better moldability and strength than conventional glass fiber heat insulating material. Further, non-itching property and weather resistance are improved.

DESCRIPTION OF SYMBOLS 1 ... Roof material 2 ... Roof main-body part 3 ... Thermal insulation

Claims (3)

The roof body,
The roofing material provided with the heat insulating material containing the glass fiber arrange | positioned at the back surface of this roof main-body part.   The roofing material according to claim 1, wherein the heat insulating material includes the glass fiber and a polyolefin-based fiber.   The said heat insulating material is a roofing material of Claim 2 formed by impregnating a non-hydrophilic resin binder in addition to the mixing | blending of the said glass fiber and the said polyolefin fiber, and heat-processing.

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