JP2013064304A - Underlying roofing sheet material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underlying roofing sheet material which exhibits excellent moisture permeability and waterproofness, and in particular waterproofness at a wicker needle part, without alteration of a hammering device for fixing the underlying roofing sheet material such as a wicker needle or a hammer tacker, preventing reduction in construction efficiency or improving the efficiency.SOLUTION: An underlying roofing sheet material comprises a first sheet layer formed of a nonwoven fabric sheet material to constitute a layer attached to a backing board, and a second sheet layer formed of a waterproof sheet material which is laminated over the whole surface of the first sheet layer through an adhesive layer. A non-adhesive part is formed between the first sheet layer and the second sheet layer in the vicinity of at least one side edge in the longitudinal direction of the underlying roofing sheet material.

Description

  [Technical Field] The present invention relates to a roof underarm sheet material that is affixed onto a base material of a roof in order to prevent water leakage in a roof structure of a building such as a wooden house.

  As shown in FIG. 9, a roof structure 100 such as a wooden house is generally supported in a state where a large number of rafters 101 are bridged between a purlin and a floor girder at a predetermined interval. A base plate 102 made of structural plywood or the like is stretched to form the base plate 102. In the roof structure 100, the lower iron sheet material 103 is stuck on the entire surface of the base plate 102, and the ring nail 105 is driven from the lower iron sheet material 103 so that the pier 104 is spaced at a predetermined interval. Fix it. The roof structure 100 is configured by rolling tiles 106 in order from below so that each of the tiles 106 is hooked on the pier 104.

  In the roof structure 100, as the lower armor sheet material 103, an asphalt-based sheet in which straight asphalt is infiltrated into a base paper and coated on both sides, or a natural material-based sheet such as a synthetic resin-based sheet or bark is generally used. Since the lower armor sheet material 103 is stuck on the base plate 102 as described above as a secondary waterproof material that prevents leakage of rainwater or the like entering through the gaps or cracks of the tile 106 into the indoor space, reliable waterproofing is achieved. Sex is required.

  By the way, in wooden houses, etc., there are also provided moisture permeable outer wall materials that have soundproofing, heat insulating properties and waterproofness to block rainwater entering from the outside. Humidity generated in the indoor where the improvement has been achieved is efficiently discharged to the outside, and generation of mold, condensation, etc. is suppressed. In a wooden house or the like, even if the exterior is configured using such an exterior material, the roof structure 100 using the above-described asphalt-based sheet mainly composed of waterproofing or the lower sheet material 103 of the synthetic resin-based sheet is used indoors. Moisture generated in the mist has been trapped exclusively in the back of the ceiling and the like, and the generation of mold due to condensation and the squeezing of the components cannot be reliably eliminated.

  Therefore, the lower armor sheet material is required to have waterproofness and watertightness that block rainwater and the like, and moisture permeability that releases moisture generated indoors to the outside.

  In addition, since the lower sheet material is fixed by nailing after being pasted on the base plate, it is also required to have a waterproof nail hole, and it is also safe by preventing slipping of the workers' feet during roofing work, etc. Non-slip properties are also required to ensure As the lower sheet material, for example, a multi-layer lower sheet material shown in Patent Document 1 or a method for constructing the lower sheet material shown in Patent Document 2 has been proposed to solve the above-described problems.

JP 2008-190217 A JP 2002-294941 A

  However, in the affixing of the lower gutter sheet material to the base material in Patent Document 1, the watertight sealing property of the zigzag needle used for affixing the lower gutter sheet material to the base material is in an ideal state. Appears only when it is driven in, and in actual construction sites, if the underlaying material is fixed on an inclined surface with a spelling tool generally called a hammer tacker, sufficient water-tight sealability is exhibited In addition, when an operator walks on the surface of the lower covering material when fixing the lower covering material or when constructing the upper covering material, the hole of the zigzag needle becomes larger, reducing the watertight sealability. Has been a problem.

  Therefore, in order to fix without using a spell needle, a type in which an adhesive layer is provided on the back surface of the lower collar sheet material and a method of fixing the lower collar sheet material with an adhesive have been proposed. Compared to fixed, the working efficiency is remarkably reduced, which is not common. Moreover, for the lower armor sheet material having moisture permeability, the moisture permeability is lowered by the adhesive or the adhesive layer, and it is difficult to use this improvement method at present.

  In addition, as shown in Patent Document 2, a construction method has also been proposed in which a lower iron sheet material is laid so as to cover a joint surface by a spelling needle. This reduces the area in which the base material can be covered with the sheet material, which is uneconomical and leads to increased costs.

  Therefore, the present invention does not change the driving tool such as a spelling needle and hammer tacker used for fixing the lower arm sheet material, and exhibits excellent moisture permeability and waterproofness, in particular, a watertight sealability of the spelling needle part, And it aims at providing the roof underarm sheet material which does not reduce or improve the efficiency of construction.

In order to solve the above-mentioned problems, the present inventors have intensively studied and have completed the present invention.
That is, the present invention provides a first sheet layer made of a non-woven sheet material that constitutes an adhesive layer on the base plate, and a waterproof layer that is laminated over the entire surface of the first sheet layer via an adhesive layer. It has the 2nd sheet layer which consists of sheet materials, and makes the non-adhesive part between the 1st sheet layer and the 2nd sheet layer near the side edge side of at least one side of the longitudinal direction of this roof underarm sheet material It is the under roof sheet material.

  In addition, a notch part may be provided in the longitudinal direction center part of the 2nd sheet layer which consists of the said waterproof sheet material, and a non-adhesion part may be provided in the opposing surface with the 1st sheet layer of this notch part vicinity.

  Alternatively, a low pressure-sensitive adhesive may be applied to a position facing the non-adhesive portion of the second sheet layer so that the waterproof sheet material in the non-adhesive portion is repeatedly temporarily bonded to the nonwoven fabric sheet material.

  The present invention includes a first sheet layer made of a non-woven sheet material constituting an adhesive layer on the base plate, and a low pressure-sensitive adhesive layer made of a low pressure-sensitive adhesive over the entire surface of the first sheet layer. It is good also as an underfloor sheet material which has the 2nd sheet layer which consists of a waterproof sheet material laminated | stacked, and joining of a nonwoven fabric sheet material and a waterproof sheet material may be based on temporary joining over the whole surface.

  According to the roof underarm sheet material according to the present invention, in pasting to the base plate, after laying the roof under arm sheet material on the base plate such as a field plate, the non-adhesive portion of the waterproof sheet material is bent, The surface of the non-woven sheet material is faced, and a needle is driven from the surface of the non-woven sheet material with a hammer tucker or the like to join the base plate.

  Thereafter, the waterproof sheet material is returned to its original position, and the surface of the needle is covered with this waterproof sheet material.

  By covering the surface of the needle with the waterproof sheet material in this way, it is possible to close the hole generated by the needle, so for example, a hole generated by the needle is generated by the driving of the needle and the load during construction. Even so, it is possible to completely ensure the watertight sealability as the lower armor sheet material.

It is a perspective view which shows the roof underarm sheet material which concerns on this invention. It is a principal part expanded sectional view of the roof underarm sheet material which concerns on this invention. It is a principal part expanded sectional view which shows the state which fixed the said roof underarm sheet material to the base material with the spelling needle | hook etc. FIG. It is a perspective view which shows the 1st modification of the roof underarm sheet material which concerns on this invention. It is a perspective view which shows the 2nd modification of the underfloor sheet material which concerns on this invention. It is a principal part expanded sectional view which shows the 3rd modification of the roof underarm sheet material which concerns on this invention. It is a principal part expanded sectional view which shows the 4th modification of the roof underarm sheet material which concerns on this invention. It is a perspective view which shows the 4th modification of the roof underarm sheet material which concerns on this invention. It is a side view which shows the structure of the roof which laid the roof underarm sheet material.

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

  Here, the roof underlay sheet material (hereinafter, abbreviated as the underarm sheet material) 1 shown as an embodiment is also configured by stretching a field board on a rafter 101 having a predetermined interval, although details are omitted. The base plate 102 is sequentially pasted from the eaves side over the entire surface.

  The lower armor sheet material 1 is formed in a structure to be described later, so that rainwater or the like that penetrates from the gap of the roof tile 106 or the like and penetrates from the nail hole of the nail that is driven to fix the lower armor sheet material 1 is surely obtained. It has a good waterproof function for blocking, and a highly moisture permeable function for releasing moisture generated indoors from the roof to the outside. In addition, the lower roof sheet material 1 prevents the worker's feet from slipping during a tile work or the like so as to ensure safety.

  As shown in FIGS. 1 and 2, the lower armor sheet material 1 according to the present invention includes a first sheet layer 2 made of a non-woven sheet material that constitutes a bonding layer on the base plate 102, and the first sheet layer 1. The sheet body is configured as a sheet body having at least a three-layer structure having a second sheet layer 4 made of a waterproof sheet material laminated over the entire surface of the sheet layer 2 with an adhesive layer 3 interposed therebetween.

  The non-adhesive portion 5 is not interposed between the first sheet layer 2 and the second sheet layer 4 in the vicinity of at least one side edge in the longitudinal direction of the lower heel sheet material 1 without interposing the adhesive layer 3. It becomes as.

  This lower iron sheet material 1 is a long sheet body having a predetermined width, and is provided in a roll shape.

  Since the lower iron sheet material 1 is formed of a material to be described later, it can be attached on the base plate 102 in an on-site manner and an excess portion or the like can be easily cut with a cutter or the like.

  The first sheet layer 2 constituting the lower armor sheet material 1 is formed by using a non-woven sheet material having air permeability made of, for example, polypropylene fiber, polyester fiber, PET (polyethylene terephthalate) fiber or natural fiber. Has been.

  The first sheet layer 2 is made of such a non-woven sheet material, so that even when the lower glazing sheet material 1 is affixed on a base plate having a relatively large gradient, it is possible to reduce slipping in the middle and work efficiency. In addition, the film is held while being adhered to the surface of the base plate so as to maintain the close contact state and pasting is performed.

  The first sheet layer 2 is formed using the above-described nonwoven fabric sheet material as a raw material, and thus has a good moisture permeability property that releases moisture or the like that is generated indoors and transmitted through the base plate 102 to the outside.

  Needless to say, the first sheet layer 2 is not limited to using the above-described nonwoven sheet material. The first sheet layer 2 has a thickness that does not significantly increase the cost of the lower sheet material 1 or reduce the handleability as long as the nonwoven sheet material has a predetermined mechanical strength. You may use a big thing.

  In the present embodiment, the first sheet layer 2 is described as having a single-layer structure. However, as shown in the above-described conventional Patent Document 1, the first sheet layer 2 may have a multilayer structure.

  By using the first sheet layer 2 having such a multi-layer structure, the first sheet layer 2 itself may have good waterproofness and moisture permeability beforehand.

  Furthermore, although not shown in the drawing, an adhesive layer for temporary fixing may be provided on the surface facing the roof base plate 102 which is the lower surface of the first sheet layer 2.

Next, the lower sheet material 1 is formed using the waterproof sheet material constituting the second sheet layer 4 using, for example, the above-described asphalt-based sheet mainly composed of waterproofness, other synthetic resin-based sheets, and the like. The Also, waterproof paper such as waterproof paper may be used.
The synthetic resin-based sheet may be made of, for example, polypropylene fiber, polyester fiber, or PET fiber, which is the same as the non-woven sheet material constituting the first sheet layer 2.

  Also, the second sheet layer 4 may have a multi-layer structure like the first sheet layer 2 described above, and the second sheet layer 4 itself may have good waterproof properties in advance.

  The lower glazing sheet material 1 is a hot melt in which the adhesive layer 3 that joins the first sheet layer 2 and the second sheet layer 4 is generally used as an adhesive, a pressure-sensitive adhesive, or a sealant that joins objects together. An agent is used, and the first sheet layer 2 is laminated with a predetermined thickness over the entire surface except for the vicinity of one side edge in the longitudinal direction.

  As is well known, this hot melt agent is an adhesive in a solid phase at room temperature in which a synthetic resin is mixed with a thermoplastic resin such as a polyolefin as a main component, and the thermoplastic resin component is melted by heating. After applying between the objects, the object is firmly bonded or sealed between the objects by cooling while pressing and curing the thermoplastic resin component. A hot melt agent exhibits a good waterproof function by being formed with a certain thickness due to its material properties.

  The adhesive layer 3 is cured by supplying a predetermined amount of hot melt agent onto the first sheet layer 2 and then laminating the second sheet layer 4, followed by heating, pressure bonding, and cooling. Thus, the second sheet layer 4 laminated on the first sheet layer 2 is bonded. In the adhesive layer 3, a part of the hot melt agent is infiltrated into the inside of the non-woven sheet material constituting the first sheet layer 2 and the second sheet layer 4 and is entangled with the fiber and cured.

  The adhesive layer 3 is coated with the first sheet layer 2 by the hot melt agent having the above-described properties to provide waterproofness, and in the first sheet layer 2 entangles with the fibers of the nonwoven sheet material to provide moisture permeability. Have. The adhesive layer 3 is coated with the second sheet layer 4 to provide waterproofness, and also in the second sheet layer 4 is entangled with the fibers of the sheet material and has moisture permeability. The adhesive layer 3 is integrated with the first sheet layer 2 and the second sheet layer 4 to improve the mechanical strength of the lower sheet material 1 as a whole.

  The present invention relates to the lower sheet material 1 having the three layers as described above, and the first sheet layer 2 and the second sheet layer 4 in the vicinity of at least one side edge in the longitudinal direction A of the lower sheet material 1. The non-bonding part 5 is formed between the two.

  The non-bonded portion 5 has a width of about 5 cm to 15 cm with respect to a length 1 m in the width direction of the lower heel sheet material 1 and is formed along the side edge.

  Therefore, the second sheet layer 4 of the lower armor sheet material 1 is not bonded to the first sheet layer 2 at one side edge, and is folded back at a width of about 5 cm to 15 cm from the side edge. The surface of 2 can be faced.

  In addition, in order to display the position of the non-adhesive portion 5 on the upper surface of the second sheet layer 4 which is the upper surface of the lower sheet material 1, the upper surface of the portion corresponding to the non-adhesive portion 5 is colored or non-adhered. A line drawing display of the folding line 7 (indicated by a dotted line in FIG. 1) may be performed at a position corresponding to the boundary line between the part 5 and the adhesive layer 3.

  In the underlay sheet material 1 configured as described above, the attachment to the roof base plate 102 is performed according to the following procedure.

  First, the lower iron sheet material 1 is laid in the lateral direction from the eaves side of the base plate 102 to the ridge side. At this time, the non-bonding part 5 side of the lower heel sheet material 1 is positioned on the ridge side.

  And the non-adhesion part 5 of the 2nd sheet layer 4 is bent along the fold line 7 from the edge part side, and the upper surface 2a of the 1st sheet layer 2 is made to face.

  The needle 6 is driven from the upper surface 2a of the first sheet layer 2 with a hammer tacker or the like, and the lower iron sheet material 1 and the base plate 102 are joined.

  At this time, the display unit 8 for displaying the driving position of the zigzag needle 6 on the upper surface 2a of the first sheet layer 2 is described in advance at a predetermined interval, and the zigzag needle 6 may be driven in accordance with this display. .

  As the spelling needle 6 used here, a general industrial staple, a stapler spelling needle or the like can be used, and the shape and material thereof are not particularly limited.

  In addition, as a driving tool used for fixing using the zigzag needle 6, a hammer tucker or a gun tucker corresponding to each zigzag needle 6, an air tucker for driving with compressed air, or the like can be used.

  Thereafter, the second sheet layer 4 is returned to its original position, and the surface of the needle 6 is covered with the second sheet layer 4 as shown in FIG.

  In this way, the surface of the spell needle 6 is covered with the second sheet layer 4 so that the needle needle 6 is concealed. For example, a hole may be formed between the needle needle 6 in the first sheet layer 2. Moreover, the said hole can be block | closed with the said 2nd sheet | seat layer 4, and a watertight sealing property can be ensured completely.

  Next, FIG. 4 shows a first modification of the underfloor sheet material according to the present invention. The lower heel sheet material 10 shown in FIG. 4 is provided with the non-adhesive portions 11 and 12 on both side edges in the longitudinal direction of the lower heel sheet material 10.

  The non-bonded portions 11 and 12 have a width of about 5 cm to 15 cm, respectively, with respect to 1 m in the width direction of the lower heel sheet material 10 and are formed along the side edges.

  Furthermore, FIG. 5 shows the 2nd modification of the underfloor sheet material concerning this invention. The lower heel sheet material 20 shown in FIG. 5 is provided with the non-adhesive portions 21 and 22 on both side edges of the lower heel sheet material 20 in the longitudinal direction. A cut portion 23 is provided in the second sheet layer 4 constituting the surface side of the lower heel sheet 20 along the longitudinal direction A, and the first sheet layer 2 and the second sheet are also formed on both sides of the cut portion 23. A non-adhesive portion 24 is provided between the sheet layer 4 and the sheet layer 4.

  Thus, by providing the joint part with the field board by the zigzag needle 6 in the center part of the lower collar sheet material 20, the lower collar sheet material 20 can be more firmly joined to the field board.

  In order to prevent rainwater or the like from entering the non-bonded portion 24 from the cut portion 23, the overlapping portions 25 are provided by extending pieces on both sides of the second sheet layer 4 in the cut portion 23, The side piece 23a may be the upper side and the eave side piece 23b may be the lower side.

  As shown in the first modification and the second modification, the number of non-bonded portions 11, 12, 21, 22, and 24 can be increased to increase the driving position by the zigzag needle 6, and eventually Even at the position where the needle is driven, the needle 6 is covered with the waterproof second sheet layer 4, and the hole formed in the first sheet layer 2 can be closed by the needle 6, ensuring a watertight seal. can do.

  FIG. 6 is an enlarged cross-sectional view of a main part showing a third modification of the underfloor sheet material according to the present invention. The lower brace sheet material 30 shown in FIG. 6 has a low adhesion at a position in the second sheet layer 32 that faces the non-adhered portion that is not bonded to the first sheet layer 31 with the adhesive layer 33. The agent 34 is applied.

  As the low pressure-sensitive adhesive 34 used here, for example, a silicon-based pressure-sensitive adhesive, a urethane-based pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, or the like can be used.

  Thus, the waterproof sheet material which comprises the 2nd sheet layer 32 in a non-adhesion part applies the low adhesive 34 in the position facing the non-adhesion part of the said 2nd sheet layer 32, and is a 1st sheet | seat. By repeatedly temporarily joining the nonwoven fabric sheet material constituting the layer 31, the water-tight sealability at the non-bonded portion can be further enhanced.

  It should be noted that the fact that the non-adhesive portion can be opened and closed by temporary bonding using a low pressure-sensitive adhesive means that the non-adhesive portion may be used for the lower glazing sheet materials 1, 10, and 20 described in the above embodiments and modifications. Not too long.

  Furthermore, FIG.7 and FIG.8 shows the 4th modification of the roof underarm sheet material which concerns on this invention.

  7 and 8 includes a first sheet layer 41 made of a non-woven sheet material that constitutes an adhesive layer on the base plate, and an entire surface on the first sheet layer 41. It has the 2nd sheet | seat layer 43 which consists of a waterproof sheet material laminated | stacked through the low adhesive layer 42 which consists of low adhesives over it.

  Here, both the first sheet layer 41 and the second sheet layer 43 are waterproofed.

  As described above, if the first sheet layer 41 and the second sheet layer 43 are temporarily joined by the low-adhesion layer 42 made of the low-adhesive agent, the first sheet layer 41 and the second sheet layer 43 are appropriately attached within the necessary range. Then, the upper surface of the first sheet layer 41 is exposed to expose the zigzag needle 6, and then the second sheet layer 42 is returned to the original position so that the upper surface of the zigzag needle 6 is second. The sheet layer 42 can be covered.

  Therefore, also in the lower iron sheet material 40 according to the fourth modification, the zigzag needle 6 can be hidden from the surface of the lower iron sheet material by the second sheet layer 42 at the time of laying construction on the base plate. The holes generated in the first sheet layer 41 by the driving of the spell needle 6 can be reliably closed.

DESCRIPTION OF SYMBOLS 1 Lower lower sheet material, 2 1st sheet layer, 3 Adhesive layer, 4 2nd sheet layer, 5 Non-adhesion part, 6 Spiral needle, 34 Low adhesive

In addition, since the lower sheet material is fixed by nailing after being pasted on the base plate, it is also required to have a waterproof nail hole, and it is also safe by preventing slipping of the workers' feet during roofing work, etc. Non-slip properties are also required to ensure The lower葺sheet over preparative material, To solve the above problems, for example, the construction method of the lower葺sheet material shown below葺sheet and Patent Document 2 multilayer shown in Patent Document 1 has been proposed.

Claims (4)

A first sheet layer made of a non-woven sheet material that constitutes an adhesive layer on the base plate;
It has a second sheet layer made of a waterproof sheet material laminated via an adhesive layer over the entire surface of the first sheet layer,
A roof underarm sheet material having a non-adhesive portion between the first sheet layer and the second sheet layer in the vicinity of at least one side edge in the longitudinal direction of the roof underarm sheet material.   The roof according to claim 1, wherein a cut portion is provided at a longitudinal center portion of the second sheet layer made of the waterproof sheet material, and a non-adhesive portion is provided on a surface facing the first sheet layer near the cut portion. Shimojo sheet material.   The roof underarm sheet material according to claim 1 or 2, wherein a low pressure-sensitive adhesive is applied to a position facing the non-bonded portion of the second sheet layer. A first sheet layer made of a non-woven sheet material that constitutes an adhesive layer on the base plate;
An underfloor sheet material having a second sheet layer made of a waterproof sheet material laminated through a low adhesive layer made of a low adhesive over the entire surface of the first sheet layer.

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