JPH10280623A - Roof substrate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antiskid property without degrading a waterproofing property physical strength, a nail hole water stopping property and moisture permeability by applying a resin to one side of nonwoven fabric for forming a plurality of spot type resin projections and filament type projections. SOLUTION: A resin is applied to at least one side of nonwoven fabric made by the flash spinning method using polyolefine resin, thereby providing a plurality of spot type resin projections 4 and 4 formed like scattering and made independent of each other. In this case, a plurality of rows of filament type projections 5 and 5 are preferably formed approximately in parallel with the end of the nonwoven fabric. More preferably, the resin is applied to a side different from a side having the projections 4 and 5, thereby forming a plurality of filament type projections 5 approximately in parallel with the end of the nonwoven fabric. Thus, a high antiskid property is provided without degrading a high waterproofing property, physical strength, a nail hole water stopping property and humidity permeability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roofing base material as a building material, and relates to waterproofness, moisture permeability, waterproofness in nail holes (waterproofness of nail holes), physical strength, and anti-slip property during construction. The present invention relates to a roof base material having the same.

[0002]

2. Description of the Related Art A sloped roof of a general house or the like is wiped up with a roofing material such as a tile, a slate, or a metal plate. When these toppings are installed on the top surface of the baseboard, prior to the installation of the toppings, they are referred to as undersprays mainly for waterproofing the surface of the baseboard, such as asphalt roofing, which is currently mainstream. Or, it is common practice to lay a synthetic polymer sheet as an underlaying material.

However, when this asphalt roofing or synthetic polymer sheet is laid down, especially in asphalt roofing, the weight of one roll is 20 kg because paper or non-woven fabric is impregnated and coated with asphalt.
Therefore, the handling at the time of construction is very poor. Also,
Asphalt roofing and synthetic polymer sheets do not have moisture permeability, so that when there is a large difference in humidity between indoors and outdoors, there is a problem in that dew condensation is likely to occur, and the field board laid underneath is easily damaged.

[0004] Therefore, a roof base material having a coating film of a thermoplastic resin provided on the surface of a sheet having both waterproofness and moisture permeability to improve the water blocking property of the nail hole around the nail axis, and gas over the entire surface of the same sheet Roof base materials coated with a permeable rubber-based resin, and non-woven fabrics formed by flash spinning, which are excellent in watertightness, moisture permeability and waterproofness for nail holes disclosed in JP-A-8-209867, have been proposed. ing.

[0005]

However, the above-mentioned sheet having excellent waterproofness and moisture permeability generally has a flat surface, and is used as a base material for a roof on which an operator walks on the upper surface of the underlaying material. There is a problem that the surface of the roof base material is slippery at the time of roof underlaying and roofing material.
Considering that the work is performed on a high grade surface, it can be understood that if the surface of the roof base material is slippery, there is a very high possibility of causing a fall accident of an operator and an accident due to a drop of construction tools. .

As a result of various studies on the above problems, the present inventor has found that by providing at least one surface of the above-mentioned roof base material sheet with anti-slip processing, the base material has excellent waterproof properties, physical strength, nail hole waterproofness, and permeability. The present inventors have found that it is possible to provide excellent anti-slip properties without impairing the wetness, and have completed the present invention. In the roof base material of the present invention, a resin is applied to at least one side of a nonwoven fabric by a flash spinning method using a polyolefin resin, thereby forming a plurality of independent and scattered projections.

That is, the roof base material according to the first invention of the present application is independent and scattered by applying a resin to at least one surface of the nonwoven fabric by a flash spinning method using a polyolefin resin and the nonwoven fabric. And a plurality of protrusions formed as described above. The roof base material according to the second invention of the present application is a nonwoven fabric formed by flash spinning using a polyolefin resin, and a resin is applied to at least one surface of the nonwoven fabric, and is formed so as to be dotted, and a plurality of independent convex portions are formed. And a plurality of linear projections formed substantially parallel to the end of the nonwoven fabric.

[0008] The roof base material according to the third invention of the present application is the roof base material according to the first or second invention described above,
The nonwoven fabric is characterized by comprising a plurality of linear projections formed substantially in parallel with the end of the nonwoven fabric by applying a resin to a surface different from the surface on which the projections are provided. In this way, at least one surface of the nonwoven fabric by the flash spinning method is utilized, for example, using a coating technique,
By forming a plurality of independent spot-shaped protrusions made of resin, it can be used as a roof base material to prevent slippage during construction (slip resistance), waterproof, moisture-permeable, water-resistant to nail holes, and physical It has excellent mechanical strength and is extremely easy to handle at the time of construction while remaining lightweight.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A sheet base material used for a roof base material of the present invention is a nonwoven fabric made by a flash spinning method using a polyolefin resin (for example, "Luxer (trademark)" commercially available from Asahi DuPont Flash Spun Products Co., Ltd.). )) And "Typek (trademark)". This nonwoven fabric is not only excellent in moisture permeability and waterproofness, but also excellent in waterproofing of nail holes.
It is preferable to use a nonwoven fabric having a high waterproof property against nail holes disclosed in Japanese Patent No. 867.

The physical properties of this non-woven fabric are as follows:
mmH ₂ O or more, or preferably, 1,000mmH ₂ O or more,
Gurley air permeability is 0.01 to 10 as gas permeability.
000 sec / 100 ml, preferably 0.5 to 10,000 sec / 100 ml, more preferably 10 to 500 sec / 100 ml
ml, tensile strength 5 kg / 5 cm width or more, preferably 8 kg
/ 5 cm width, more preferably 15 kg / 5 cm width or more.

[0011] The water resistance here is JIS-L109.
The water resistance test method A in Example 2 (low water pressure method) conforms to the hydrostatic pressure method. The Gurley air permeability (sec / 100ml) is J
It is the gas permeability of the sheet measured by IS-P 8117. Further, the tensile strength conforms to the JIS-L 1096 method. The basis weight is preferably 40 g / m ² or more, more preferably 50 to 200 g / m ² , and particularly preferably 60 to 120 g / m ^2.
The material of the polyolefin nonwoven fabric referred to here is preferably
Examples include polyethylene and polypropylene.

[0012] The non-woven fabric by flash spinning used as a sheet base material of the roof base material of the present invention may be subjected to a surface treatment such as corona treatment for improving the adhesiveness of a printing ink or an anti-slip agent. To enhance the fluorine system,
Use chemicals and resins such as silicone and wax-based water repellents, antistatic agents to reduce dust, UV absorbers to enhance weather resistance and durability, light stability, antioxidants, surface protective agents, etc. It may be applied to the surface or included in the raw material for flash spinning the nonwoven fabric.

Further, in order to improve the water blocking property of nail holes, a known high water-absorbing polymer such as polyacrylate or maleate, or a rubber-based resin such as butyl rubber or styrene-butadiene rubber is coated on the surface of the nonwoven fabric. It may be applied or impregnated.Furthermore, the non-woven fabric by the flash spinning method used as a sheet base material of the roof base material of the present invention and another non-woven fabric having moisture permeability, a microporous film, a rubber or the like sandwich the superabsorbent polymer. Alternatively, a three-layer structure integrated with an appropriate adhesive may be used.

[0014] The nonwoven fabric by the flash spinning method used as the sheet base material of the roof base material of the present invention has a high reflectance,
It is preferable to be colored because it tends to dazzle during construction. Examples of the coloring method include printing such as gravure printing and flexographic printing, and a method in which a raw material for flash spinning the nonwoven fabric contains a coloring pigment. Also,
In order to facilitate the laying and construction of the underlaying material of the present invention as an underlaying material, an overlap portion of the laid underlaying material, a method of construction, and the like may be displayed by printing. It is preferable to select the agent, resin, ink, etc. that does not reduce the advantageous moisture permeability of the nonwoven fabric used in the present invention, and it is preferable to apply the agent partially instead of applying the entire surface.

Further, a plurality of independent spot-shaped projections scattered on the surface of the sheet substrate made of the nonwoven fabric or projections (linear projections) continuously connected substantially in parallel to the end of the nonwoven fabric. Examples of the resin forming (a) include acrylic resins, thermoplastic resins such as rubber resins and hot melt resins, and examples thereof include ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, butyl rubber, There are a styrene-butadiene (block) copolymer and an ethylene-vinyl acetate copolymer.

In particular, a hot-melt resin is preferable because the height of the convex portion is easily provided and the resin is easily dried. When the convex portion in the present invention is formed on the surface of the nonwoven fabric by flash spinning using a hot melt resin, the softening temperature of the hot melt resin is preferably 70 to 150 ° C. If the temperature is lower than 70 ° C., blocking tends to occur in summer, which is not preferable. When the hot melt resin is attached at 150 ° C. or higher, it is necessary to increase the resin heating temperature,
It is not preferable because shrinkage or holes may occur in the nonwoven fabric.
It is also possible to mix various powders with the resin.

In the roof base material of the present invention, the formation of the anti-slip projection using the above resin is performed by any of various methods such as coating and lamination. For example, the resin in the heat-melted state is lifted with a liquid engraving roll (gravure roll), scraped off with a doctor knife, and the resin remaining in the recesses is partially adhered to the nonwoven fabric sheet base material and solidified by cooling. Obtain a roof base material according to.

Alternatively, the liquid resin of the hot melt agent is lifted with an engraving roll and scraped off with a doctor knife, and the resin remaining in the recesses is adhered to a sheet substrate made of the nonwoven fabric, or a hot melt emulsion of the resin is silk-screen printed. A resin is partially adhered to the nonwoven sheet base material by using a method and dried to obtain a roof base material according to the present invention.

Further, a heated hot-melt agent such as a hot-melt gun system (for example, manufactured by Nordson Corporation) is sent to the gun body by a pump, and is pressurized by a compressor or the like to a desired size and length from the nozzle tip of the gun. The hot melt is extruded, adhered to the nonwoven fabric, and cooled and solidified to obtain the roof base material of the present invention. The application portion is not particularly limited as long as the spot-shaped convex portions are independently scattered or the linear convex portions are formed in a predetermined region at a predetermined pitch, but are not limited along the surface of the nonwoven sheet. It is preferable that the coating be performed so that the above-mentioned convex portion having a predetermined height (height) is formed. The size of the convex portion is appropriately selected depending on the type of the resin to be used, the coating method, and the like, but preferably, a circular or elliptical spot-shaped convex portion having a diameter of 3 to 40 mm, a width of 2 to 10 mm, and a length of 10 mm. ~ 100mm streak-like protrusions, pitch between adjacent protrusions 5-100mm,
The height of the protrusion (height at the highest point) is 0.5 to 4.0 mm.

The area occupied by the protrusions formed by these resins is 5 to 80%, more preferably 10 to 50%, especially 10 to 30% of the area of the nonwoven fabric sheet before coating.
It is preferred that The spot-shaped protrusions are independently scattered on the surface of the nonwoven fabric by the flash spinning method constituting the roof base material according to the present invention, so that the height of the friction coefficient of the resin for forming the protrusions, the surface of the nonwoven fabric and the protrusions are formed. Due to the discontinuity of the friction of the resin and the contact between the protrusions and the shoe bottom of the underlaying material laying work place, it is hard to cause slippage when wet as well as when dry, and it is scattered independently. It is difficult for rainwater to collect.

In the present invention, at least one side, preferably both sides, of the sheet substrate made of the nonwoven fabric is subjected to anti-slip processing. According to the present invention, excellent anti-slip properties can be imparted by the anti-slip processing without impairing the excellent waterproofness, physical strength, nail hole waterproofness and moisture permeability of the base material.
Therefore, there is no risk of slipping when the roof is laid under the sloped roof or when the topping material is laid, and there is no danger of accidents such as slipping of the feet of workers even when the surface of the base material sheet is wet in rainy weather or the like. .

Specifically, the anti-slip processing is performed on at least one surface of the nonwoven fabric sheet by the above-mentioned flash spinning method, that is, the front surface or the back surface, preferably both surfaces. Further, the anti-slip processing may be performed on the entire or partial construction surface as long as the predetermined moisture permeability required for the roof base material, particularly the roof base material sheet is not impaired. The anti-slip processing on the back side suppresses slippage between the roof base material and the ground board,
Not only does it prevent people from slipping during construction, but also prevents tearing at the tackers and nails that secure the roof base material.

For the anti-slipping processing of the back surface, a non-slipping method other than the method of providing the independent spot-shaped projections of the present invention may be used. For example, any of a method of bonding aggregates, foam materials, various powders and the like using a binder, a method of hot-melting a hot melt agent or the like that exhibits adhesiveness in a dot-like or streak-like manner, etc. May be used. At this time, mineral particles such as sand are used as the aggregate, and n-
It contains low-boiling hydrocarbons such as butane, i-butane, pentane, and neopentane, and contains, as a main component, an aromatic vinyl compound such as vinylidene chloride, acrylonitrile, (meth) acrylate such as methyl methacrylate, and styrene. Foamable microcapsules using a thermoplastic resin as a wall film material, and synthetic resin particles, metal powder, glass beads, plastic beads and the like can be used as the powder. As the binder to be adhered, any of acrylic, urethane, styrene / butadiene, ethylene / vinyl acetate, and vinylidene chloride can be used. As the bonding method, various coating methods and printing methods such as a knife coater, a gravure coater, a kiss coater, and a bar coater can be used, but when the binder is coated on the entire nonwoven sheet used in the present invention, the original transparency of the sheet is obtained. Since the wettability is impaired, it is particularly preferable to coat the binder in a dot shape or a streak shape. In addition, as a hot melt agent, polyethylene,
It is necessary to use a hot melt agent whose melting point is lower than the melting point of the nonwoven fabric sheet among ethylene / vinyl acetate, polyester, polyamide and the like. If the melting point of the hot melt agent is equal to or higher than the melting point of the non-woven fabric sheet obtained by the flash spinning method used in the present invention, the non-woven fabric sheet is melted and finally perforated depending on the temperature at the time of melting.
Specifically, a method of spraying and hot-pressing a powdery hot-melt agent, a method of melting the hot-melt agent into a liquid state and coating it in a dot shape or a stripe shape may be used.

It is desirable to apply the roof base material of the present invention as shown in FIG. In FIG. 1, a roof base material 2 according to the present invention is provided on an upper surface of a sloped roof base plate 1 of a general house or the like.
(a) and (b) are laid so that a part thereof has the overlapping portion 3. The spot-shaped projections 4 are formed on the surfaces of the roof base materials 2 (a) and 2 (b). In FIG. 2, which is a schematic view for explaining the laying state of the roof base materials 2 (a) and 2 (b) in the overlapping portion 3 of FIG. 1, the roof base material 2 (b )
A plurality of linear projections 5 are formed at the end of the roof base material 2 (a) located on the side of the baseboard with respect to the roof base material 2 (b). A plurality of linear projections 5 are formed in a portion corresponding to the overlapping portion 3 in (b). In the roof base material of the present invention, it is preferable to provide a plurality of linear projections substantially parallel to the end of the nonwoven fabric sheet used.

As described above, the roof base material according to the present invention is used as an underlaying material, and a plurality of the base materials are laid so that the respective ends thereof partially overlap each other. It is preferable that there are no independent spot-shaped protrusions so that no overlapping occurs.Moreover, since at least a gap is formed in the overlapping portion, a flash spinning method according to the present invention is used as a water stopping portion for infiltrating water such as rainwater entering from the gap. Roof base material 2 (a), 2 (b) using non-woven fabric
It is necessary to provide a linear convex portion 5 formed continuously and substantially in parallel at the end portion.

More preferably, said roof base material 2 (a),
2 (b) also has a plurality of linear protrusions 5 substantially parallel to the end on a surface (hereinafter referred to as a back surface) different from the surface having a plurality of spot-shaped protrusions 4 formed independently. It is. That is,
As shown in FIG.
Exists in the overlapping part 3 of the two sheets of the roof base materials 2 (a) and 2 (b). As a result, the overlapping part can be reduced.
It is cost effective.

As for the above-mentioned linear projections, a method and a resin for producing spot-shaped projections which are independently scattered can be used. In particular, a resin material that exhibits heat-melting properties such as a hot melt agent having a softening temperature of 70 to 13 ° C. and exhibits adhesiveness is preferred. This is achieved by providing an overlapping portion 3 of the roof base materials 2 (a) and 2 (b) as shown in FIG. be able to.

[0028]

[Examples] The roof base material of the present invention will be specifically described with reference to the following examples. In addition, each physical property in an Example was measured by the following method. (1) Tensile strength According to the JIS-L-1096 tensile strength and elongation rate test method, a sample having a width of 3 cm and a length of 20 cm was gripped with a constant-speed extension type Tensilon tensile tester at a grip interval of 10 cm and a tensile speed of 20 cm / Measure under min conditions. The measurement was performed at n = 5 in each of the vertical and horizontal directions, and an average value was obtained. The average value was expressed as the average of both (kgf / 3 cm).

(2) Water Resistance Based on JIS-L-1092 water resistance test method, (low water pressure method) hydrostatic pressure method, measured at n = 5 and averaged (mmH ₂ O)
Expressed by (3) Moisture Permeability JIS-L-1099 moisture permeability test method, based on the A-1 method (calcium chloride method), measured at n = 3, represented by the average ^{(g / m 2 / 24hr)} . The moisture permeability may be at 1000g / m ² / 24hr or more in the present invention.

(4) Sliding property Assuming a sloping roof such as a general house, the height is 182 cm and the width is 91.
A water-resistant plywood having a thickness of 12 cm and a thickness of 12 mm was installed at a gradient of 45 °, and a construction test of each test sample was performed. Each sample was fixed using a tucker and a spiral-shaped slate nail. Thereafter, three testers climbed on the sample, walked and evaluated for slippage. In addition, slippage when the surface was wetted with water was also evaluated. The determination was made based on whether nailing work was possible on the sheet. The judgment results are as follows. Nailing work possible ...

(5) Waterproofing of nail hole The sample was placed on a 12 mm thick plywood, and a nail for colonial roof tiles (length 30 mm, maximum diameter 3.3 mm, minimum diameter 2.9 mm,
The distance between the maximum diameter (minimum diameter) and the maximum diameter (minimum diameter) is 1.3 mm. On this, a PVC pipe whose bottom is sealed with a sealing agent is set up. Pour water into this to a height of 25 mm, and reduce water after 24 hours (mm)
Calculate the amount of water reduction (ml) from Measured at n = 10, 1.
Those having a volume of 0 ml or less are designated as plywood and expressed in the pass rate (%).

(6) Tear Strength Based on the tear strength test (Elmendorf method) according to JIS-P-8117, each was measured at n = 5 in the longitudinal and transverse directions, and the average (kg)
f). (7) Weight The test sample was cut into 1 mx 1 m, and its weight was measured and represented by the value (g / m ² ).

(Example 1) As a sheet base material for the roof base material 2 shown in FIG.
Using a nonwoven fabric “Luxar (registered trademark) H4080ZZ (basis weight: 105 g / m ² , thickness: 0.31 mm)” commercially available from Products Co., Ltd., a plurality of gravure rolls using a hot melt resin as shown below are used. Independent projections 3 are provided with a predetermined pattern and height, and continuous projections of 3 mm in width and 1 mm in height are provided in parallel from the end. A silica powder having a particle diameter of 100 microns and an emulsion-based acryl-styrene resin as a binder were mixed, and then dispersed almost uniformly by a spray method to obtain 30 g / m ² (silica: about 20 g /
m ² , binder: about 10 g / m ² ) was applied and dried to obtain a roof base material of the present invention.

(Pattern) Circular pitch of 13 mm in diameter 14 mm Height 1.1 mm Area ratio occupied by projections 25% Adhesion amount Approx. 60 g / m ² (Only pattern portion) (Hot melt agent) Fine Tac E-3C ( Main component: Acrylic copolymer / hydrogenated petroleum resin / wax Softening point: about 120 ° C

Example 2 As a sheet base material for the roof base material 2 shown in FIG. 1, a nonwoven fabric “Luxar (registered trademark)” manufactured by Asahi Dupont Flashspun Products Co., Ltd.
H 4080ZZ (basis weight: 105 g / m ² , thickness: 0.31 m
m) using yellow-green dots (circular, area ratio 15%)
After being colored by flexographic printing, a hot melt resin is applied to a hot melt gun and a hot melt applicator (MX4000series) of Nordson as shown below.
, A plurality of independent projections 3 are formed in a predetermined pattern and height, and at the same time, the width is 5 mm and the height is 1.
A 5 mm continuously connected linear projection 4 is provided, and a water-soluble heating type foaming ink (AQ foam: ethylene-vinyl acetate copolymer, resin emulsion) is dot-shaped (area ratio) by a gravure printing machine on the back surface. Approximately 10%, solid content adhesion amount: 10 g /
m ² ) to obtain a roof base material of the present invention.

(Pattern) 20 mm in length, 5 mm in width Linear length 20 mm, width 30 mm, height 1.5 mm Adhesion amount about 70 g / m ² (pattern part only) (Hot melt agent) Finetac E-3C (Yamabun Yuka)

Comparative Example 1 A commercially available 22 kg asphalt roofing was used. (Comparative Example 2) A flash-spun nonwoven fabric “TYPEC (registered trademark) 1060B” commercially available from Asahi Dupont Flash Span Products Co., Ltd. is used, and a non-slip non-woven fabric of the present invention is used as Comparative Example 2,
Table 1 shows the evaluation results of Examples 1 and 2 and Comparative Examples 1 and 2. As can be seen from Table 1, as compared with the conventional product (Comparative Example 1), the weight per unit area is good, the workability is good, and the tear strength is excellent. . In addition, when compared with the case where the non-slip-resistant nonwoven fabric of the present invention is used as a roof base material without applying the anti-slip treatment of the present invention (Comparative Example 2), a decrease in moisture permeability is minimized.
It can be seen that the nail hole waterproofness and the slipperiness are improved.

[0038]

[Table 1]

Next, with the roof base material of Example 2 laid down to have the overlapping portion 3 shown in FIG.
The test was conducted under the following conditions, assuming a 0 ° sloped roof. - thickness of 12 in the roof base material Tucker Hariyaku 40 places / m ²
mm, and the length of the overlapping portion 3 was 15 cm. -No. 3 spelling needle specified by JIS-S6036 was used as the tucker needle. -A shower test was performed on this roof model (without tiles). Precipitation: 30 mm / m ² / hr Test time: 1 hr Wind: Wind speed: 20 m / s along an upward slope After a shower test, visually check whether the water-resistant plywood is wet due to water leakage from the tucker and intrusion from the overlap. As a result, no wetting of the water-resistant plywood was observed. As a result,
It can be seen that the roof base material of the present invention is also excellent in waterproofness of the tacker needle, and is also effective against intrusion water from the overlapping portion.

[0040]

The roof base material of the present invention has excellent waterproofness, physical strength, and nail holes while being subjected to anti-slip processing on at least one surface of a roof base material made of a flash-spun polyolefin nonwoven fabric sheet. It is possible to provide excellent anti-slip properties without impairing water and moisture permeability. As described above, in order to remarkably improve the anti-slip property (slip-prevention property) at the time of construction as a roof base material by forming a plurality of scattered projections which are independent from each other on the surface of the nonwoven fabric by the flash prevention method. It has a great effect of preventing workers from falling down and accidents caused by dropping of construction tools when underlaying under sloped roofs or when installing overtopping materials. Become. Furthermore, by providing a plurality of convex portions formed continuously at least on one side substantially parallel to the end as a water stopping portion of the intruding water from the overlapping portion, the problem of the intruding water is eliminated, and the overlapping portion is eliminated. Can be reduced, and the construction cost is also advantageous.

[Brief description of the drawings]

FIG. 1 is a schematic diagram for explaining underlaying material construction using a roof base material of the present invention.

FIG. 2 is a schematic diagram for explaining a state of an overlapping portion of the roof base material when the underlaying material is laid using the roof base material according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Field board 2 Roof base material of this invention 3 Overlap part of laid roof base material 4 Spot-shaped convex part 5 Linear convex part

Claims (3)

[Claims] 1. A non-woven fabric formed by a flash spinning method using a polyolefin resin, and a plurality of projections formed independently and scattered by applying a resin to at least one surface of the non-woven fabric. A base material for a roof characterized by being made. 2. A nonwoven fabric formed by a flash spinning method using a polyolefin resin, a resin applied to at least one surface of the nonwoven fabric, formed so as to be scattered, each having a plurality of independent convex portions and an end portion of the nonwoven fabric. A roof base material comprising a plurality of linear projections formed substantially in parallel to the base material. 3. The roof base material according to claim 1, wherein a resin is applied to a surface of the nonwoven fabric that is different from the surface on which the protrusions are provided, so that the nonwoven fabric is substantially parallel to an end of the nonwoven fabric. A roof base material comprising a plurality of formed linear projections.