JP2002220900A - Roof base material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roof base material having non-slip property on both surfaces and superior durability, water resistance and sealing performance for pinholing. SOLUTION: This roof base material is formed by an anti-slip synthetic resin layer containing fine particles, a base material 1 layer, a modified asphalt compound layer, a base material 2 layer, and a synthetic resin film layer. The synthetic resin film layer is subjected to crepe finishing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roofing material useful as a roofing material.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 2-118177 discloses a non-woven sheet provided with a non-slip material made of a waterproof and moisture-permeable polyolefin in which at least one surface is coated with a non-slip material on an area of 10 to 80%. ing. JP-A-3-14
Japanese Unexamined Patent Publication No. 0552 discloses a roof base material characterized by semi-impregnated rubber asphalt into a nonwoven fabric subjected to surface dot processing and having a rubber asphalt layer disposed on the back surface thereof. Japanese Patent Application Laid-Open No. 4-239632 discloses a non-slip sheet comprising a non-slip thin layer formed on a plastic film. JP-A-4-250250 discloses an asphalt layer, a plastic film layer, a non-slip thin layer on the upper surface of a substrate, and an asphalt layer, a self-adhesive layer, and a release layer on the lower surface of the substrate.
Fix the roof underpowment material laminated on the base,
A roofing method characterized by fixing a roof facing material thereon is disclosed.

[0003] Japanese Patent Laid-Open No. 5-202580, made of thermoplastic resin, water resistant 200 mm ₂ O or more, Gurley ShikiToru air permeability 0.01～10,000 seconds / 100ml and tensile strength 5 kg / 5 cm width or more An architectural base material is disclosed in which an architectural base material in which a resin layer having a watertight seal around a nail axis is provided on a surface of a sheet, wherein at least one surface of the sheet is subjected to anti-slip processing. ing. Japanese Unexamined Patent Publication (Kokai) No. 6-279754 discloses a joint waterproofing tape for a base material having a non-slip property, in which a synthetic fiber non-woven fabric is used as a core material, an anti-slip coating material is applied to the surface, and an adhesive layer is laminated on the back surface. Is disclosed.

JP-A-8-53909 discloses (a)
An anti-slip synthetic resin layer containing fine particles, (b) a base layer made of a nonwoven fabric or a woven fabric, (c) an asphalt layer,
(D) an asphalt roofing felt comprising a mineral powder layer, (a) an anti-slip synthetic resin layer containing fine particles, (b) a base material layer made of a nonwoven fabric or a woven fabric, and (c) asphalt. Layer, (e) self-adhesive layer,
(F) Disclosed is an asphalt roofing felt comprising a release layer.

Japanese Patent Application Laid-Open No. 11-62125 discloses that a front sheet layer made of nonwoven fabric is laminated on the surface of a base sheet layer mainly composed of rubberized asphalt, and a back sheet layer also made of nonwoven fabric is laminated on the back surface. The ratio of unit mass ratio and elongation percentage of the front sheet layer and the back sheet layer is such that unit mass ratio: front sheet layer> back sheet layer elongation ratio: front sheet layer <back sheet layer A roof underlay waterproofing sheet is disclosed.

[0006]

The underlay waterproofing of a sloping roof of a building is performed by laying asphalt roofing, rubber-based or resin-based sheets as roof underlaying materials, and mechanically fixing them. Further, a non-slip layer may be provided to make the surface of the roof base material non-slip.

An object of the present invention is to provide a roof base material having excellent non-slip properties on both surfaces, durability, water resistance, and excellent nail hole sealing properties. Further, it is an object of the present invention to provide a roof base material having appropriate flexibility by preventing the asphalt-containing layer of the roof base material from being stained by a contact portion.

[0008]

According to the present invention, there are provided (a) an anti-slip synthetic resin layer containing fine particles, (b) a substrate (1) layer,
The present invention relates to a roof base material comprising (c) a modified asphalt compound layer, (d) a substrate (2) layer, and (e) a synthetic resin film layer, wherein the synthetic resin film layer is creped. Further, preferably, the present invention provides
The above-mentioned synthetic resin film layer is a polyethylene layer, and relates to the above-mentioned roof base material.

[0009] Preferably, the present invention relates to the above-mentioned roof base material, wherein the modified asphalt compound layer has a penetration of 25 dmm to 250 dmm.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The roof base material of the present invention comprises (a) a non-slip synthetic resin layer containing fine particles, and (b) a base material (1).
A base layer, comprising: (c) a modified asphalt compound layer; (d) a substrate (2) layer; and (e) a synthetic resin film layer, wherein the synthetic resin film layer is creped. is there.

The roof base material of the present invention comprises (a) a non-slip synthetic resin layer containing fine particles, (b) a substrate (1) layer,
(C) a modified asphalt compound layer, (d) a substrate (2) layer, (e) a synthetic resin film layer,
Roof base materials characterized in that the base (2) layer and the synthetic resin film layer are creped.

The roof base material of the present invention comprises (a) a non-slip synthetic resin layer containing fine particles, (b) a substrate (1) layer,
The roof base material includes five layers in which (c) a modified asphalt compound layer, (d) a substrate (2) layer, and (e) a synthetic resin film layer are laminated in this order. The roof base material of the present invention comprises (a) a non-slip synthetic resin layer containing fine particles, (b) a base (1) layer, (c) a modified asphalt compound layer, and (d) a base (2) layer. And (e) a laminate of five or more layers including five layers laminated in the order of the synthetic resin film layer.

In the underlaying material of the present invention, the synthetic resin film layer, preferably (d) the base (2) layer and the synthetic resin film layer are creped, so that they are excellent in slip resistance. In the roof base material of the present invention, since the synthetic resin film layer, preferably (d) the substrate (2) layer and the synthetic resin film layer are creped, wrinkling during production and construction can be prevented. This can prevent the occurrence of sagging during construction. In the base material for a roof of the present invention, the base material (2)
As the layer and the synthetic resin film layer, those obtained by performing creping after these two layers are laminated directly or via another layer can be used.

In the underlaying material of the present invention, the synthetic resin film layer, preferably (d) the base (2) layer and the synthetic resin film layer, preferably have an elongation of 5% or more, more preferably 5 to 250%. %, More preferably 20 to 2
20%, particularly preferably 50 to 200%, is preferably creped because of its excellent anti-slip properties, and is preferably used in order to prevent the occurrence of winding wrinkles during production and construction. Further, it is preferable because it is possible to prevent the occurrence of sag during construction.

(A) The anti-slip synthetic resin layer containing fine particles can be formed as a coating film on the substrate (1) layer by, for example, a method such as lamination, coating, spraying, or impregnation. As the anti-slip synthetic resin layer, a layer containing a synthetic resin paint and fine particles can be used. The anti-slip synthetic resin layer is composed of fine particles 3 to 100 parts by weight of the synthetic resin paint.
250 parts by weight, further 5-200 parts by weight, especially 10-1
It is preferable to use one containing 80 parts by weight.
It is preferable to add a water repellent, a paint, a pigment, a thickener, and the like to the anti-slip synthetic resin layer as necessary. Any amount of the anti-slip synthetic resin layer can be used, but preferably 20 to 100 g / m ² , more preferably 40 to 95 g / m ² , and particularly preferably 50 to 90 g / m ² .
It is in the range of m ^2.

As the fine particles, mineral fine powder, plastic beads, and the like can be used. As the mineral fine powder, silica, silica sand, zeolite, mica, talc, clay, alumina, calcium carbonate and the like can be used. Examples of the plastic beads include polyolefin beads such as polyethylene and polypropylene, polystyrene beads, polyamide beads such as nylon 6 and nylon 66, and beads such as pulverized thermosetting resins such as phenol resin and melamine resin. The particle diameter of the fine particles may be any as long as there is no problem in use, and is preferably 0.05 to 1 m.
m, more preferably 0.07 to 0.9 mm, particularly preferably 0.1 to 0.7 mm.

As the synthetic resin paint, polyurethane, acrylic resin, ethylene-vinyl acetate copolymer, polyester, polyamide, polybutadiene, styrene-butadiene copolymer and the like can be used. It is preferable to use a synthetic resin paint having excellent weather resistance. It is preferable to use a synthetic resin paint having excellent flexibility. In particular, as the synthetic resin paint,
Methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, ethyl methacrylate, at least one polymer of a monomer selected from methacrylates such as butyl methacrylate, or at least one of the monomers A copolymer of one kind with an α-olefin such as ethylene or another vinyl monomer such as styrene is preferable.

The substrate (1) layer and the substrate (2) layer are a non-woven fabric or a woven fabric made of synthetic resin fiber or chemical fiber,
In particular, a nonwoven fabric made of synthetic fibers is preferable. The synthetic resin is not particularly limited. For example, polyesters such as aromatic polyesters such as polyethylene terephthalate, polyamides such as nylon 6 and nylon 66, polyacrylonitrile, polyethylene (including ethylene-α-olefin copolymer) and Examples thereof include polyolefins such as polypropylene. These fibers can be used alone or in combination.

The basis weight of the non-woven fabric or woven fabric used for the substrate (1) layer and the substrate (2) layer is not particularly limited, but is generally preferably in the range of 30 to 150 g / m ² . In particular, the basis weight of the nonwoven fabric or woven fabric used for the substrate (1) layer is as follows:
It is preferably in the range of 30 to 150 g / m ² , more preferably in the range of 40 to 120 g / m ² , particularly preferably in the range of 50 to 120 g / m ^2.
Range to 100 g / ^{m 2,} the basis weight of the nonwoven fabric or woven fabric used for the base material (2) layer is preferably from 50 to 100 g / ^{m 2}
, More preferably in the range of 40 to 70 g / m ² ,
Particularly preferably, the range of 30 to 50 g / m ² is preferable because of its light weight and excellent workability.

(C) The penetration of the modified asphalt compound layer is preferably in the range of 25 to 250 dmm, more preferably in the range of 50 to 200 dmm, more preferably in the range of 100 to 180 dmm, and particularly preferably in the range of 130 to 160 dmm. The range is excellent in flexibility, and when the worker works on the roof base material, the weight of the worker is applied to the roof base material, the adhesion between the roof base material and the roof is improved, and the roof base material is attached to the roof. On the other hand, it is preferable because it has excellent anti-slip properties.

(C) As a modified asphalt compound layer, 100 parts by weight of asphalt and polymer 1
A substance containing 0 to 40 parts by weight and 0 to 20 parts by weight of an inorganic filler can be used. The modified asphalt compound layer is composed of asphalt, polymer and inorganic filler.
Those prepared by heating and mixing at 0 to 200 ° C. for 1 to 5 hours are preferable because they are excellent in adhesion to a base, waterproof / moisture proof, stretchability, and the like. The modified asphalt compound layer may contain, in addition to the composition described above, an organic compounding agent generally used in rubber compounding, such as process oil, petrolatum, ceresin, and petroleum resin.

The asphalt of the modified asphalt compound layer is preferably a naturally occurring one such as natural asphalt or asphaltite, a petroleum asphalt such as straight asphalt, blown asphalt or cutback asphalt, or a mixture of these asphalts.

Examples of the polymer of the modified asphalt compound layer include natural rubber, synthetic rubber, a mixture of natural rubber and synthetic rubber, polyethylene, ethylene-vinyl acetate copolymer, ethylene-acrylic copolymer, polypropylene, polybutene-1, Poly-4-methylpentene-1, polystyrene, acrylonitrile / styrene copolymer, ABS resin, polyvinyl chloride, polyacrylonitrile, a polymer of styrene and butadiene (eg, SBS, SBR, etc.) can be used. In particular, rubbers such as SBS are suitable.

As the inorganic filler for the modified asphalt compound layer, calcium carbonate, magnesium silicate,
Calcium silicate, aluminum silicate, silicic anhydride,
A particulate inorganic filler such as clay, carbon black, talc, mica, barium sulfate, diatomaceous earth, and silica, and a fibrous inorganic filler such as asbestos and glass fiber can be used.

(E) The synthetic resin film layer includes low-density polyethylene, high-density polyethylene, polyethylene such as ethylene-α-olefin copolymer, polypropylene, polyolefin film such as poly-4-methylpentene-1, polyethylene terephthalate, and polyolefin film. A polyester film such as an aromatic polyester such as butylene terephthalate, a polyamide film such as nylon 6, and a synthetic resin film such as a halogenated vinyl polymer such as polyvinyl chloride and polyvinylidene chloride can be used. The synthetic resin film is preferably a stretched film such as uniaxially stretched or biaxially stretched, or a non-stretched film. As the synthetic resin film, a laminated film obtained by laminating two or more films can be used. As the synthetic resin film layer, low-density polyethylene and ethylene-α-olefin copolymer are preferable because of their excellent flexibility. The thickness of the synthetic resin film may be a suitable thickness that does not cause any trouble at the time of production and is not easily damaged during construction or use, preferably in the range of 3 to 100 μm, more preferably in the range of 4 to 75 μm, and particularly preferably. Is preferably in the range of 5 to 50 μm. Synthetic resin film layer, the asphalt of the modified asphalt compound layer little or no permeation of the synthetic resin film layer, in order not to stain the clothes and shoes of construction workers and building members and roof members that come into contact with the roof base material preferable.

The rigidity of the roof base material of the present invention is 200 m
m or less, more preferably 180 mm or less, further preferably 150 mm or less, particularly preferably 120 mm or less.

Coefficient of friction (longitudinal) of the roof base material of the present invention
Is 0.35 or more, further 0.37 or more, further 0.3
It is preferably at least 9, more preferably at least 0.40, particularly preferably at least 0.42.

Embodiments of the present invention will be described below in detail with reference to the drawings. The present invention is not limited only to these embodiments.

An example of a specific structure of the roof base material of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a roof base material 10 showing one embodiment of the present invention. Roof base material 10
Are a non-slip synthetic resin layer 1 containing fine particles, a base material (1) layer 2, a modified asphalt compound layer 3, a creped base material (2) layer 4, and a creped synthetic resin film layer 5 Are stacked in this order. Base material (2)
The layer 4 can be used without being creped.

FIG. 2 schematically shows a test for evaluating the watertightness of the laminate. The filter paper 12 is attached to the upper surface of the water-resistant plywood 13. Further, a dish-shaped laminate 11 with the synthetic resin film layer on the outside is placed thereon.
The filter paper 12 and the laminate 11 are brought into contact with each other on the flat bottom surface of the laminate. Stacker 14 (staples) with laminated body 11
From above, into filter paper 12 and water-resistant plywood 13. After that, the laminate 11 is filled with water. After a predetermined time, the condition of water leakage to the filter paper is observed.

[0031]

The present invention will be described below with reference to examples and comparative examples, but the present invention is not limited to only these examples.

[Measurement Method] (1) Penetration: JIS K2207 (Penetration test method)
The evaluation was performed in warm water at a temperature of 25 ° C. in accordance with. (2) Flexibility: Evaluated in a room at a temperature of 20 ° C. in accordance with JIS L1096A method (45 ° cantilever method). (3) Friction resistance: Evaluated in a room at a temperature of 20 ° C. in accordance with ASTM-D1894. The lateral direction is the same as the direction of the crepe wrinkles or waves, and the length is perpendicular to the direction of the crepe wrinkles or waves. (4) Elongation rate: The elongation rate was calculated by equation (1).

(Equation 1)

(5) Evaluation of water tightness: The water tightness of the laminate shown in FIG. 2 was evaluated. Nine tackers (water head: 10 mm) were driven into a filter paper and water-resistant plywood from above a roof base material or a laminate, and water was poured to a height of about 1 cm. One week later,
The state of water leakage to the filter paper was observed. ：: Visually, no leakage was observed at all of the nine tacker hammering locations. ×: Visually, leakage was observed at one or more hammering locations of nine tacker hammering locations.

Example 1 The anti-slip synthetic resin layer containing fine particles and the substrate (1) layer had a basis weight of 50 g / m 2.
With ² of the polyester nonwoven fabric in an acrylic resin coating material mixed with mineral particulate which was coated at 70 g / m ^2,
As a modified asphalt compound layer, a layer containing straight asphalt, bron asphalt, a styrene-butadiene-styrene polymer, a styrene-butadiene elastomer and calcium carbonate and having a thickness of 0.6 mm and a penetration of 145 dmm, a base (2) layer and A five-layer laminate having the structure shown in FIG. 1 and consisting of a creped laminate of 70% elongation obtained by laminating a polyester nonwoven fabric having a basis weight of 50 g / m ² and a low-density polyethylene film having a thickness of 15 μm as a synthetic resin film layer. Created body. The water tightness, the softness and the softness and the frictional resistance were measured for the prepared five-layered laminate, and the results are shown in Table 1.

Example 2 A five-layer laminate having the structure shown in FIG. 1 was prepared in the same manner as in Example 1, except that a polypropylene film having a thickness of 25 μm was used as the synthetic resin film layer of Example 1. The water tightness, the softness and the softness and the frictional resistance were measured for the prepared five-layered laminate, and the results are shown in Table 1.

[0036]

[Table 1]

[0037]

The roof base material of the present invention can provide a roof base material excellent in non-slip properties on both surfaces, and excellent in durability, water resistance and nail hole sealability. The roof base material of the present invention is:
Since a resin layer such as a film is provided on both sides of the asphalt-containing layer, there is no bleeding of asphalt from both surfaces, and excellent prevention of dirt on a contact portion with a roof base material. ADVANTAGE OF THE INVENTION The roof base material of this invention can prevent generation | occurrence | production of a wrinkle at the time of manufacture and construction, and can also prevent that sag arises at the time of construction.

The underlaying material of the present invention is obtained by using a modified asphalt compound layer and / or a synthetic resin film layer having a moderate flexibility, and further comprising all the layers having a moderate flexibility. When the builder works on the roofing material, the weight of the building material is applied to the roofing material, and the adhesion between the builder and the roofing material and between the roofing material and the roof are improved. Therefore, it is excellent in slip resistance.

[Brief description of the drawings]

FIG. 1 schematically shows a cross-sectional view of a roof base material showing an example of the present invention.

FIG. 2 schematically shows a test for evaluating water tightness.

[Explanation of symbols]

 1: anti-slip synthetic resin layer containing fine particles, 2: base (1) layer, 3: modified asphalt compound layer, 4: creped base (2) layer, 5: creped synthesis Resin film layer, 10: roof base material.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E04D 12/00 E04D 12/00 RF Term (Reference) 4F055 AA10 BA16 CA16 DA02 EA04 EA05 EA06 EA07 EA24 FA10 FA25 FA39 FA40 GA01 4F100 AK01A AK01E AK04E AK06 AK41 AK73 AM00C AT00B AT00D BA05 BA07 BA10A BA10E CA23A DD01E DE01A DG15 EJ17 GB90 JK16 JK16A YY00C

Claims (3)

[Claims] (A) a non-slip synthetic resin layer containing fine particles, (b) a substrate (1) layer, (c) a modified asphalt compound layer, (d) a substrate (2) layer, (e) A base material for a roof comprising a synthetic resin film layer, wherein the synthetic resin film layer is creped. 2. The roof base material according to claim 1, wherein the modified asphalt compound layer has a penetration of 25 dmm to 250 dmm. 3. The roof base material according to claim 1, wherein the synthetic resin film layer is a polyethylene layer.