JP2007223046A - Moisture permeating waterproof sheet for building material - Google Patents

Moisture permeating waterproof sheet for building material Download PDF

Info

Publication number
JP2007223046A
JP2007223046A JP2006043408A JP2006043408A JP2007223046A JP 2007223046 A JP2007223046 A JP 2007223046A JP 2006043408 A JP2006043408 A JP 2006043408A JP 2006043408 A JP2006043408 A JP 2006043408A JP 2007223046 A JP2007223046 A JP 2007223046A
Authority
JP
Japan
Prior art keywords
layer
nonwoven fabric
moisture
waterproof sheet
permeable waterproof
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2006043408A
Other languages
Japanese (ja)
Inventor
Takahiro Asako
Yoshihiko Hata
Masaharu Shinoda
Takeshi Suzuki
政春 信田
孝裕 浅子
良彦 畑
健 鈴木
Original Assignee
Chori Co Ltd
Fukuvi Chem Ind Co Ltd
Suminoe Textile Co Ltd
フクビ化学工業株式会社
住江織物株式会社
蝶理株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chori Co Ltd, Fukuvi Chem Ind Co Ltd, Suminoe Textile Co Ltd, フクビ化学工業株式会社, 住江織物株式会社, 蝶理株式会社 filed Critical Chori Co Ltd
Priority to JP2006043408A priority Critical patent/JP2007223046A/en
Publication of JP2007223046A publication Critical patent/JP2007223046A/en
Pending legal-status Critical Current

Links

Images

Abstract

Provided is a moisture permeable waterproof sheet for building materials that is lightweight, can maintain excellent nail hole sealing performance even under severe environmental conditions, can be sufficiently waterproofed, and has excellent moisture permeability.
A moisture-permeable waterproof sheet for building material according to the present invention includes an outer nonwoven fabric layer 2, an outer porous polyolefin film layer 3 having waterproofness and moisture permeability, bonded to the lower side of the outer nonwoven fabric layer 2, and An intermediate nonwoven fabric layer 4 having a swelling layer 8 adhered to the lower side of the film layer 3 and an inner porous polyolefin film layer having waterproofness and moisture permeability adhered to the lower side of the intermediate nonwoven fabric layer 4 5 and an inner nonwoven fabric layer 6 bonded to the lower side of the film layer 5. The swelling layer 8 preferably contains a water-absorbing polymer.
[Selection] Figure 1

Description

  The present invention relates to a moisture permeable waterproof sheet for building materials that is excellent in moisture permeability and waterproof properties used as, for example, a roof base material.

  Conventionally, fabrics impregnated with asphalt have been often used as roof base materials for houses. This asphalt-impregnated fabric is excellent in that it has waterproofness, good dimensional stability, high physical strength, and good nail hole sealing performance around the nail axis when nails are driven.

  However, since the asphalt-impregnated fabric has a weight exceeding 30 kg with a roll of about 20 m due to the inclusion of asphalt, there is a problem that handling property at the time of construction is very poor. In addition, the asphalt-impregnated fabric has almost no moisture permeability, and there is also a problem that the base plate is likely to corrode due to moisture since the moisture under the roof does not escape after construction. In addition, the asphalt-impregnated fabric is likely to be deteriorated and stretched due to the temperature difference between the temperature and the temperature after the construction. For this reason, the nail hole sealability around the nail shaft and the tucker portion was liable to deteriorate with time.

  On the other hand, as a roof base material replacing the conventional asphalt-impregnated fabric, Patent Document 1 has a resin layer having stretchability and adhesiveness laminated on the surface of the fabric, and a resin layer with less adhesiveness is further formed thereon. Laminated roof base materials have been proposed.

Further, in Patent Document 2, a nonwoven fabric having an anti-slip layer on the upper surface is bonded to the upper surface of a waterproof and moisture-permeable polyethylene film, and a swelling layer made of a superabsorbent polymer is formed on the lower surface of the polyethylene film. An architectural waterproof sheet is described in which a non-woven fabric is adhered.
JP-A-2-269277 JP 2002-316373 A

  However, in the roof base material described in the above-mentioned Patent Document 1, the resin sheet is exposed on the surface, and it is easy to be damaged, and the waterproofness that is a basic function is easily impaired. Also, the nail hole sealability when nails were laid was not sufficient. Furthermore, there is a concern that the roof may shift due to the temperature of the resin sheet on the surface rising and softening due to direct sunlight in summer.

  Further, in the architectural waterproof sheet described in Patent Document 2, good waterproofness is maintained without water see-through after 24 hours in a water permeability test in a state where nails are driven, After more severe environmental conditions such as temperature difference of temperature and temperature difference and humidity were loaded, the nail hole sealability could not always be maintained at a sufficient level. Development of a moisture-permeable waterproof sheet for building materials that can maintain hole sealing performance has been desired.

  The present invention has been made in view of such a technical background, is lightweight, can maintain excellent nail hole sealing performance even under severe environmental conditions, can be sufficiently waterproof, and has excellent moisture permeability. Providing moisture-permeable waterproof sheets for building materials.

  In order to achieve the above object, the present invention provides the following means.

[1] an outer nonwoven layer;
A waterproof and moisture permeable outer porous polyolefin film layer adhered to the underside of the outer nonwoven layer;
An intermediate nonwoven layer having a swelling layer adhered to the underside of the outer porous polyolefin film layer;
An inner porous polyolefin film layer having waterproofness and moisture permeability adhered to the lower side of the intermediate nonwoven fabric layer;
A moisture-permeable waterproof sheet for building materials, comprising: an inner nonwoven fabric layer bonded to the lower side of the inner porous polyolefin film layer.

  [2] The moisture-permeable waterproof sheet for building materials as recited in the aforementioned Item 1, wherein an anti-slip layer is laminated on the upper surface of the outer nonwoven fabric layer.

  [3] The building material moisture permeable waterproof sheet according to item 1 or 2, wherein the swelling layer is laminated on the upper surface of the intermediate nonwoven fabric layer.

  [4] The building material moisture-permeable waterproof sheet according to any one of items 1 to 3, wherein the swelling layer contains a water-absorbing polymer.

[5] The swelling layer is formed by applying a resin composition containing 5 to 50 parts by mass of a water-absorbing polymer to 10 parts by mass of the binder resin, and the applied amount of the water-absorbing polymer is 3 to 30 g / building materials for moisture-permeable waterproof sheet according to any one of the preceding 1 to 3 is m 2.

  The invention of [1] is excellent in light weight because no heavy asphalt is used. Moreover, since two layers of the outer and inner porous polyolefin film layers having waterproofness and moisture permeability are provided, sufficient waterproofness and moisture permeability can be secured as a moisture permeable waterproof sheet for building materials. Moreover, since the outer nonwoven fabric layer is laminated on the upper surface side of the outer porous polyolefin film layer, the outer porous polyolefin film layer can be sufficiently prevented from being exposed and damaged during construction, and the inner porous polyolefin film can be prevented. Since the inner nonwoven fabric layer is laminated on the lower surface side of the film layer, it is possible to sufficiently prevent the inner porous polyolefin film layer from being damaged by contact with the base plate during construction. Further, since the intermediate nonwoven fabric layer has a swelling layer, the water that has entered the lower side of the outer porous polyolefin film layer from the gap around the nail axis of the placed nail is absorbed by the swelling layer and swells. The swelling can close and seal a gap (nail hole) around the nail axis, and can secure a good nail hole sealing performance. Also, some of the water that has entered the lower side of the outer porous polyolefin film layer from the gap around the nail axis of the placed nail may reach the lower side of the swelling layer. However, the presence of the water-permeable and moisture-permeable inner porous polyolefin film layer on the lower side of the intermediate nonwoven fabric layer can surely prevent the water from escaping to the lower side of the moisture-permeable waterproof sheet for building materials. . Thus, by placing the inner porous polyolefin film layer having waterproofness and moisture permeability on the lower side of the intermediate nonwoven fabric layer having the swelling layer, a more excellent nail hole sealing property can be obtained. However, the remarkably superior preventive property can be obtained.

  In the invention of [2], since an anti-slip layer is laminated on the upper surface of the outer nonwoven fabric layer, for example, when used as a roof base material, even if a construction worker walks on the moisture-permeable waterproof sheet for building material, it slips. Difficult to increase work safety.

  In the invention of [3], since the swelling layer is laminated on the upper surface of the intermediate nonwoven fabric layer, more excellent nail hole sealing properties can be obtained.

  In the invention of [4], a swelling layer containing a water-absorbing polymer is used, and the water-absorbing polymer hardly releases water once absorbed, so that the nail hole sealing property can be further improved.

In the invention of [5], the swelling layer is formed by applying a resin composition containing 5 to 50 parts by mass of the water-absorbing polymer to 10 parts by mass of the binder resin, and the applied amount of the water-absorbing polymer is 3 to 3. Since it is 30 g / m 2 , the nail hole sealing property can be further improved while ensuring good moisture permeability.

  One embodiment of the moisture permeable waterproof sheet (1) for building materials according to the present invention is shown in FIG. The moisture permeable waterproof sheet for building material (1) of the present embodiment is a sheet that is particularly preferably used as a roof base material. In this moisture permeable waterproof sheet (1) for building materials, an outer porous polyolefin film layer (3) having waterproofness and moisture permeability is bonded to the lower surface of the outer nonwoven fabric layer (2), and the outer porous polyolefin film layer (3 ) Is bonded to an intermediate nonwoven fabric layer (4) having a swelling layer (8), and an inner porous polyolefin film layer (5) having waterproofness and moisture permeability is attached to the lower surface of the intermediate nonwoven fabric layer (4). It consists of a laminated sheet that is bonded and further has an inner nonwoven fabric layer (6) bonded to the lower surface of the inner porous polyolefin film layer (5).

  In this embodiment, the anti-slip layer (10) is laminated on the upper surface of the outer nonwoven fabric layer (2). Moreover, the said swelling layer (8) is arrange | positioned on the upper surface of the said intermediate nonwoven fabric layer (4). That is, the swelling layer (8) is laminated on the surface of the intermediate nonwoven fabric layer (4) on the outer porous polyolefin film layer (3) side.

  In the present invention, the outer porous polyolefin film layer (3) has waterproofness and moisture permeability, and plays a major role in expressing waterproofness and moisture permeability as the moisture permeable waterproof sheet (1) for building materials. To fulfill. Although it does not specifically limit as said outer side porous polyolefin film layer (3), It is preferable to comprise with the porous polyethylene film which has waterproofness and moisture permeability, or the porous polypropylene film which has waterproofness and moisture permeability. Among these, it is more preferable that the film is composed of a porous polyethylene film. In this case, workability is improved and moisture permeability can be further increased.

  The inner porous polyolefin film layer (5) has waterproofness and moisture permeability, and plays a major role in developing waterproofness and moisture permeability as a moisture permeable waterproof sheet for building materials (1). It is. In particular, the swelling layer (8) absorbs and swells water that has entered the lower side of the outer porous polyolefin film layer (3) from a gap (nail hole) around the nail axis when the nail is placed. Thus, the nail hole around the nail axis is sealed. At this time, a part of the water that has entered from the nail hole around the nail axis may reach the lower side of the intermediate nonwoven fabric layer (4). However, even in such a case, the presence of the inner porous polyolefin film layer (5) below the intermediate nonwoven fabric layer (4) allows the water to flow below the moisture-permeable waterproof sheet for building materials (1). It can be prevented from reaching (leaving out).

  Although it does not specifically limit as said inner side porous polyolefin film layer (5), It is preferable to comprise with the porous polyethylene film which has waterproofness and moisture permeability, or the porous polypropylene film which has waterproofness and moisture permeability. Among these, it is more preferable that the film is composed of a porous polyethylene film. In this case, workability is improved and moisture permeability can be further increased.

  The porous polyolefin film layers (3) and (5) preferably have a thickness of 20 to 100 μm. When it is 20 μm or more, sufficient elasticity can be obtained to fill a gap (nail hole) generated between the nail and the film by placing the nail during construction, and sufficient nail hole sealing performance can be obtained. , 100 μm or less can ensure sufficient lightness.

The Young's modulus of the porous polyolefin film layers (3) and (5) is preferably 1 to 30 kg / mm 2 , and in this case, more excellent nail hole sealing performance can be obtained. Among them, the Young's modulus of the porous polyolefin film layers (3) and (5) is more preferably 2 to 25 kg / mm 2 .

In addition, the moisture permeability of the porous polyolefin film layers (3) and (5) is preferably 1000 g / m 2 · 24 hr or more. In this case, the moisture permeability of the moisture permeable waterproof sheet for building materials (1) is sufficient. It can be ensured and the base plate can be sufficiently prevented from corroding with moisture.

The outer nonwoven fabric layer (2) reinforces the outer porous polyolefin film layer (3) and the like, and absorbs an impact applied to the moisture permeable waterproof sheet for building material (1) to absorb the moisture permeable waterproof sheet for building material (1 ) To prevent damage. Although it does not specifically limit as said outer side nonwoven fabric layer (2), A spun bond nonwoven fabric and a needle punch nonwoven fabric are preferable. Among these, a spunbond nonwoven fabric or needle punched nonwoven fabric made of polyester or polypropylene is more preferable. The basis weight of the outer nonwoven fabric layer (2) is preferably set to 20 to 100 g / m2. By setting in such a range, it is possible to sufficiently prevent the outer porous polyolefin film layer (3) from being exposed and damaged during construction, and lightweight as a moisture permeable waterproof sheet for building materials (1), Excellent heat insulation, soundproofing and buffering properties.

  As an anti-slip agent which forms the said anti-slip layer (10), what has anti-slip property and has no adhesiveness is good, for example, resin, rubber, etc. are mentioned. Specific examples include polyamide resins, polyester resins, polyolefin resins, acrylic resins, urethane resins, epoxy resins, synthetic rubbers, and asphalts. The method for applying the anti-slip agent is not particularly limited, and examples thereof include a coating method, a gravure roll method, a relief printing method, and a screen printing method. Among these, it is preferable to form the anti-slip layer (10) by applying the anti-slip agent to which the organic or inorganic foaming agent is added to the upper surface of the outer nonwoven fabric layer (2). There is an advantage that can be further improved. The anti-slip agent may be applied to the entire upper surface of the outer nonwoven fabric layer (2) or may be partially applied as long as the anti-slip effect can be exerted as long as air permeability is not impaired. .

The inner nonwoven fabric layer (6) reinforces the inner porous polyolefin film layer (5) and the like, and absorbs an impact applied to the building material moisture permeable waterproof sheet (1) to absorb moisture applied to the building material moisture permeable waterproof sheet. It plays the role of preventing the damage of (1). Although it does not specifically limit as said inner side nonwoven fabric layer (6), A spun bond nonwoven fabric and a needle punch nonwoven fabric are preferable. Among these, a spunbond nonwoven fabric or needle punched nonwoven fabric made of polyester or polypropylene is more preferable. The basis weight of the inner nonwoven fabric layer (6) is preferably set to 20 to 100 g / m2. By setting in such a range, it is possible to sufficiently prevent the inner porous polyolefin film layer (5) from being damaged by contact with the base plate during construction, and the moisture-permeable waterproof sheet for building materials (1) As a result, it has excellent lightness, heat retention, soundproofing and buffering properties.

The intermediate nonwoven fabric layer (4) reinforces the outer porous polyolefin film layer (3) and the inner porous polyolefin film layer (5) and is added to the moisture permeable waterproof sheet (1) for building materials. It plays a role of absorbing the impact and preventing the moisture-permeable waterproof sheet for building material (1) from being damaged. Although it does not specifically limit as said intermediate nonwoven fabric layer (4), A spun bond nonwoven fabric and a needle punch nonwoven fabric are preferable. Among these, a spunbond nonwoven fabric or needle punched nonwoven fabric made of polyester or polypropylene is more preferable. Also, the basis weight of the intermediate non-woven fabric layer (4) is preferably set to 10 to 100 g / m 2.

  In this invention, the said intermediate nonwoven fabric layer (4) has a swelling layer (8). In this embodiment, the swelling layer (8) is laminated on the upper surface of the intermediate nonwoven fabric layer (4), but is not particularly limited to such an embodiment, for example, the intermediate nonwoven fabric layer (4) You may laminate | stack on the lower surface, or may laminate | stack on the center area | region of the thickness direction of an intermediate | middle nonwoven fabric layer (4). However, from the viewpoint of ensuring better nail hole sealing properties, the swelling layer (8) is preferably laminated on the upper surface of the intermediate nonwoven fabric layer (4).

  The swelling agent for forming the swelling layer (8) is not particularly limited as long as it has a function of absorbing water and swelling, and examples thereof include a water-absorbing polymer. Examples of the water-absorbing polymer include polyacrylate cross-linked products, starch-polyacrylate, polyvinyl alcohol-polyacrylate, isobutylene-maleate, and the like. May be.

  The swelling agent is usually fixed to the intermediate nonwoven fabric layer (4) with a binder resin. The binder resin is not particularly limited, and examples thereof include vinyl resins, urethane resins, silicon resins, acrylic resins, epoxy resins, and ester resins. Among these, acrylic resins are preferably used from the viewpoint of good handleability during processing and cost. The mixing ratio of the water-absorbing polymer and the binder resin (mixing ratio in solid content) is preferably 5 to 50 parts by mass with respect to 10 parts by mass of the binder resin.

The adhesion amount of the water-absorbing polymer is preferably set to 3 to 30 g / m2. When it is 3 g / m 2 or more, a sufficient nail hole sealing property is obtained, and when it is 30 g / m 2 or less, good moisture permeability is obtained. Especially, it is more preferable that the adhesion amount of the water-absorbing polymer is set to 5 to 20 g / m 2 , and particularly preferably 7 to 15 g / m 2 .

  The method for applying the swelling agent for forming the swelling layer (8) to the intermediate nonwoven fabric layer (4) is not particularly limited, and examples thereof include a coating method, a gravure roll method, a relief printing method, and a screen printing method. Is mentioned. Among them, the gravure roll method can be applied to the entire surface, or can be applied in a lattice shape, so that the process according to the form of the intermediate nonwoven fabric layer (4) and the material can be performed so that the air permeability is not impaired, Preferably employed.

  The adhesion method between the layers is not particularly limited as long as it can adhere while ensuring air permeability. For example, various adhesion methods such as a dry lamination method, a wet lamination method, and a thermal lamination method are used. The type of adhesive is not particularly limited.

  Next, specific examples of the present invention will be described, but the present invention is not particularly limited to these examples.

<Example 1>
An outer non-woven fabric having an anti-slip layer (10) by applying an acrylic resin to the entire surface of one side of an outer non-woven fabric (2) made of a polyester non-woven fabric with a basis weight of 30 g / m 2 by a coating method in a solid content of 40 g / m 2 (2) was obtained. Moreover, the resin composition which consists of 50 mass parts of starch-polyacrylate (superabsorbent polymer) and acrylic binder resin 50 mass parts on the single side | surface of the intermediate nonwoven fabric (4) which consists of a polyester nonwoven fabric of 15 g / m < 2 > of fabric weight. By applying 10 g / m 2 with a gravure roll, an intermediate nonwoven fabric (4) having a swelling layer (8) on one side was obtained.

Next, the outer nonwoven fabric (2), a water-permeable and moisture-permeable outer porous polyethylene film (3) having a moisture permeability of 7000 g / m 2 · 24 hr, and a swelling layer (8) An intermediate nonwoven fabric (4) having a moisture permeability of 7000 g / m 2 · 24 hr, a 30 μm thick inner porous polyethylene film (5) having a water permeability and a moisture permeability, and a polyester nonwoven fabric having a basis weight of 30 g / m 2 The respective layers were bonded and integrated by a dry laminating method so that the inner nonwoven fabric (6) to be laminated in this order, and the moisture permeable waterproof sheet for building material (1) shown in FIG. 1 was obtained. At this time, lamination was performed so that the anti-slip layer (10) became the outermost layer and the swelling layer (8) was disposed on the outer porous polyethylene film (3) side of the intermediate nonwoven fabric (4) (see FIG. 1). ).

<Example 2>
Examples were used except that the outer porous polyethylene film (3) and the inner porous polyethylene film (5) were waterproof and moisture-permeable porous polyethylene films having a moisture permeability of 15000 g / m 2 · 24 hr. In the same manner as in Example 1, a moisture permeable waterproof sheet for building materials was obtained.

<Example 3>
A moisture-permeable waterproof sheet for building materials was obtained in the same manner as in Example 1 except that the coating amount of the resin composition was adjusted so that the amount of starch-polyacrylate (superabsorbent polymer) adhered was 20 g / m 2. It was.

<Example 4>
A moisture-permeable waterproof sheet for building materials was obtained in the same manner as in Example 1 except that the coating amount of the resin composition was adjusted so that the amount of starch-polyacrylate (superabsorbent polymer) adhered was 30 g / m 2. It was.

<Example 5>
A moisture permeable waterproof sheet for building materials was prepared in the same manner as in Example 1 except that the coating amount of the resin composition was adjusted so that the adhesion amount of starch-polyacrylate (superabsorbent polymer) was 2 g / m 2. Obtained.

<Example 6>
A moisture permeable waterproof sheet for building materials was prepared in the same manner as in Example 1 except that the coating amount of the resin composition was adjusted so that the adhesion amount of starch-polyacrylate (superabsorbent polymer) was 50 g / m 2. Obtained.

<Comparative Example 1>
An outer nonwoven fabric having an anti-slip layer was obtained by applying an acrylic resin on the entire surface of one side of a polyester nonwoven fabric having a basis weight of 30 g / m 2 to a solid content of 40 g / m 2 by a coating method and drying. Further, a resin composition comprising 50 parts by mass of starch-polyacrylate (superabsorbent polymer) and 50 parts by mass of an acrylic binder resin on one side of a polyester nonwoven fabric having a basis weight of 15 g / m 2 is 10 g / m by gravure roll. The inner nonwoven fabric having a swelling layer on one side was obtained by applying two .

Next, the outer nonwoven fabric, a waterproof and moisture-permeable porous polyethylene film having a moisture permeability of 7000 g / m 2 · 24 hr, and the inner nonwoven fabric having the swelling layer are overlapped in this order. As described above, each layer was bonded and integrated by a dry laminating method to obtain a moisture permeable waterproof sheet for building materials. At this time, lamination was performed so that the anti-slip layer was the outermost layer and the swelling layer was disposed on the porous polyethylene film side of the inner nonwoven fabric.

  Each moisture permeable waterproof sheet for building materials obtained as described above was evaluated based on the following test method. These results are shown in Table 1.

<Waterproofness evaluation method>
The waterproofness of each moisture permeable waterproof sheet for building materials was evaluated based on JIS L1092 5.1.1 method B (waterproofing test method for textile products).

<Moisture permeability evaluation method>
The moisture permeability (g / m 2 · 24 hr) of each moisture permeable waterproof sheet for building materials was determined according to JIS L1099 4.1 Method A (moisture permeability test method for textile products).

<Nail hole sealability evaluation method>
The moisture permeable waterproof sheet for building materials is 80 ° C. × 20% RH × 15.5 hours, −40 ° C. × 0% RH × 7.5 hours, 80 ° C. × 95% RH × 15.5 hours, −40 ° C. × 0. The process of placing each in order under each environmental condition of% RH × 7.5 hours is defined as 1 cycle, and this is repeated 5 cycles.

  Next, the moisture-permeable waterproof sheet for building materials after the above 5 cycles is placed on a 12 mm-thick plywood with the anti-slip layer facing up, and a nail for a colonial roof tile (length 30 mm, maximum diameter 3.3 mm) The minimum diameter is 2.9 mm, the distance between the maximum diameter and the maximum diameter is 1.3 mm), a vinyl chloride pipe is erected on this, and the bottom is sealed in a watertight state with a sealing agent. The top end opening was sealed with a rubber stopper and left standing with a water head pressure of 150 mm, and the reduction amount (mL) of water in the pipe after 24 hours was measured. The thing whose water reduction amount is 1.0 mL or less was set as "pass". In addition, each sample and the comparative example were tested for 10 samples, respectively, and the pass rates are shown in Table 1. For example, what is described as “10/10” in the table indicates that the nail hole sealability test was passed for all 10 samples.

  As is clear from the table, the moisture permeable waterproof sheets for building materials of Examples 1 to 6 of the present invention have good moisture permeability, good waterproof properties, and nail hole seals even after more severe environmental conditions. The property was good. In particular, the moisture permeable waterproof sheets for building materials of Examples 1 to 4 were more excellent in both moisture permeability and nail hole sealing properties.

  On the other hand, the moisture-permeable waterproof sheet for building material of Comparative Example 1 according to the conventional configuration was insufficient in nail hole sealability after passing through more severe environmental conditions.

  The moisture permeable waterproof sheet for building material of the present invention is used, for example, as a building base material, and particularly preferably used as a roof base material.

It is a typical sectional view showing one embodiment of a moisture-permeable waterproof sheet for building materials concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Moisture-permeable waterproof sheet for building materials 2 ... Outer nonwoven fabric layer 3 ... Outer porous polyolefin film layer 4 ... Intermediate nonwoven fabric layer 5 ... Inner porous polyolefin film layer 6 ... Inner nonwoven fabric layer 8 ... Swelling layer 10 ... Anti-slip layer

Claims (5)

  1. An outer nonwoven layer;
    A waterproof and moisture permeable outer porous polyolefin film layer adhered to the underside of the outer nonwoven layer;
    An intermediate nonwoven layer having a swelling layer adhered to the underside of the outer porous polyolefin film layer;
    An inner porous polyolefin film layer having waterproofness and moisture permeability adhered to the lower side of the intermediate nonwoven fabric layer;
    A moisture-permeable waterproof sheet for building materials, comprising: an inner nonwoven fabric layer bonded to the lower side of the inner porous polyolefin film layer.
  2.   The moisture-permeable waterproof sheet for building materials according to claim 1, wherein an anti-slip layer is laminated on the upper surface of the outer nonwoven fabric layer.
  3.   The moisture-permeable waterproof sheet for building materials according to claim 1 or 2, wherein the swelling layer is laminated on an upper surface of the intermediate nonwoven fabric layer.
  4.   The moisture-permeable waterproof sheet for building materials according to any one of claims 1 to 3, wherein the swelling layer contains a water-absorbing polymer.
  5. The swelling layer is formed by applying a resin composition containing 5 to 50 parts by mass of a water-absorbing polymer to 10 parts by mass of the binder resin, and the applied amount of the water-absorbing polymer is 3 to 30 g / m 2 . The moisture-permeable waterproof sheet for building materials according to any one of claims 1 to 3.
JP2006043408A 2006-02-21 2006-02-21 Moisture permeating waterproof sheet for building material Pending JP2007223046A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006043408A JP2007223046A (en) 2006-02-21 2006-02-21 Moisture permeating waterproof sheet for building material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006043408A JP2007223046A (en) 2006-02-21 2006-02-21 Moisture permeating waterproof sheet for building material

Publications (1)

Publication Number Publication Date
JP2007223046A true JP2007223046A (en) 2007-09-06

Family

ID=38545308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006043408A Pending JP2007223046A (en) 2006-02-21 2006-02-21 Moisture permeating waterproof sheet for building material

Country Status (1)

Country Link
JP (1) JP2007223046A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009180032A (en) * 2008-01-31 2009-08-13 Sumitomo Forestry Co Ltd Exterior wall waterproof structure
JP2010201811A (en) * 2009-03-04 2010-09-16 Teijin Fibers Ltd Moisture-permeable waterproof cloth and fiber product
WO2012026532A1 (en) * 2010-08-25 2012-03-01 セーレン株式会社 Roof backing sheet and production method for same
JP2013083148A (en) * 2011-09-29 2013-05-09 Seiren Co Ltd Roofing material and manufacturing method for the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11115105A (en) * 1997-08-11 1999-04-27 Asahi Du Pont Flash Span Products Kk Moisture permeable and waterproof laminated sheet
JP2002128929A (en) * 2000-10-30 2002-05-09 Sekisui Chem Co Ltd Microporous film
JP2002316373A (en) * 2001-02-14 2002-10-29 Seiren Co Ltd Waterproof sheet for construction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11115105A (en) * 1997-08-11 1999-04-27 Asahi Du Pont Flash Span Products Kk Moisture permeable and waterproof laminated sheet
JP2002128929A (en) * 2000-10-30 2002-05-09 Sekisui Chem Co Ltd Microporous film
JP2002316373A (en) * 2001-02-14 2002-10-29 Seiren Co Ltd Waterproof sheet for construction

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009180032A (en) * 2008-01-31 2009-08-13 Sumitomo Forestry Co Ltd Exterior wall waterproof structure
JP2010201811A (en) * 2009-03-04 2010-09-16 Teijin Fibers Ltd Moisture-permeable waterproof cloth and fiber product
WO2012026532A1 (en) * 2010-08-25 2012-03-01 セーレン株式会社 Roof backing sheet and production method for same
JP2013083148A (en) * 2011-09-29 2013-05-09 Seiren Co Ltd Roofing material and manufacturing method for the same

Similar Documents

Publication Publication Date Title
US6924015B2 (en) Modified bitumen roofing membrane with enhanced sealability
EP0178353B1 (en) Improvements in roofing
US7721506B2 (en) Panelized roofing system and method
US6584746B1 (en) Masonry flashing system
US6936329B2 (en) Fastener-free composite roofing product
US20150259900A1 (en) Peel and stick waterproofing material
US4442148A (en) Waterproofing laminate
JP4716981B2 (en) Improved thermoplastic single layer protective coating
ES2345582T3 (en) Sealing sheet assembly for construction surfaces and manufacturing and application procedures of the same.
CA2576771C (en) Methods of providing water protection to roof structures and roof structures formed by the same
CA1174024A (en) Method of waterproofing roofs and the like
US20130318911A1 (en) Insulated Sheathing Panel and Methods for Use and Manufacture Thereof
KR100872127B1 (en) Root isolation sheet, complex waterproof and root isolation layer structure constructing method thereof
US7146771B2 (en) Cap sheet, roofing installation, and method
EP2268753B1 (en) Adhesive membrane
US20070044397A1 (en) Skid resistant surfaces
KR100971254B1 (en) waterproof layer and waterproof method using a self-adhesion type composite sheet
US20050118446A1 (en) Waterproofing air and vapor barrier membrane
US7698858B2 (en) Membrane for the protection of buildings
TWI485068B (en) Waterproof sheets for building materials
DK2193022T3 (en) Film material for the building sector and composition foli material events
SE462221B (en) Laminated, bituminoest taktaeckningsmembran
JP2004534164A (en) Use of ionomers to seal insulation
KR101005542B1 (en) Multi functional composite sheet for building and waterproofing structure using the same
EP0169308B1 (en) Synthetic underroof membrane

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090219

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110303

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110322

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20110719