JPH01260057A - Moisture-permeable and waterproof sheet - Google Patents
Moisture-permeable and waterproof sheetInfo
- Publication number
- JPH01260057A JPH01260057A JP8532788A JP8532788A JPH01260057A JP H01260057 A JPH01260057 A JP H01260057A JP 8532788 A JP8532788 A JP 8532788A JP 8532788 A JP8532788 A JP 8532788A JP H01260057 A JPH01260057 A JP H01260057A
- Authority
- JP
- Japan
- Prior art keywords
- asphalt
- sheet
- moisture
- permeable
- waterproof sheet
- 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
Links
- 239000010426 asphalt Substances 0.000 claims abstract description 33
- 229920000728 polyester Polymers 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims description 7
- 230000035699 permeability Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 10
- 238000005470 impregnation Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、透湿・防水性を有するシートに関する。詳し
くは、建築物の壁下地材などの隔壁材に用いられる透湿
・防水性シートに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a sheet having moisture permeability and waterproof properties. Specifically, the present invention relates to a moisture-permeable and waterproof sheet used for partition wall materials such as wall base materials of buildings.
（従来の技術） 従来、建築物の壁下地材（以下、ハウスラップと称す。(Conventional technology) Conventionally, wall base materials for buildings (hereinafter referred to as house wrap) have been used.
）建築の防水工事材などには、アスファルトフェルトが
その優れた防水性を生がして使われていた。しかし、近
年、建築物の壁部の構造は、外壁の壁体内部結露を防止
するための構法（例えば、木造住宅に於ける外壁通気構
法等）が普及してきた。これによって、従来、ハウスラ
ップに使われてきたアスファルトフェルトに防水性だけ
でなく、内部結露を防止するため室内側から洩れてくる
湿気を通す透湿性を有することが要望されるようになっ
た。) Asphalt felt was used as a material for waterproofing construction, taking advantage of its excellent waterproof properties. However, in recent years, construction methods for preventing dew condensation inside the outer walls of buildings have become popular (for example, outer wall ventilation construction methods for wooden houses). As a result, asphalt felt, which has traditionally been used for house wrap, is required not only to be waterproof, but also to have moisture permeability that allows moisture to leak from the indoor side to prevent internal condensation.
しかしながら、従来のアスファルトフェルトは、古紙や
石綿を主材とした原紙にアスファルトを十分に含浸して
いるため、防水性は優れるものの、透湿性が極めて低い
。又、原紙の湿潤時の強力低下によって耐久性が悪いな
どの欠点を有している。However, conventional asphalt felt has excellent waterproofness but extremely low moisture permeability because it is made of base paper made mainly of waste paper or asbestos that is sufficiently impregnated with asphalt. Additionally, it has drawbacks such as poor durability due to a decrease in strength when the base paper is wet.
又、ポリエステル不織布とアスファルト複合の防水シー
トは公知である。透湿性を加味したものはない。Also, waterproof sheets made of polyester nonwoven fabric and asphalt composite are known. There is no one that takes moisture permeability into consideration.
（発明が解決しようとする問題点）
本発明は、上記、従来技術の問題点からアスファルトフ
ェルトの理想的な特性を追求することにより、（１）透
湿性、（２）湿潤時の強力保持特性、（３）防水性、（
４）経済性（安価である）等の特性のバランスに優れた
ハウスラップの提供を目的に鋭意検討の結果、本発明を
完成するに至ったものである。(Problems to be Solved by the Invention) The present invention pursues the ideal properties of asphalt felt from the above-mentioned problems of the prior art. , (3) waterproofness, (
4) The present invention has been completed as a result of intensive studies aimed at providing housewrap with an excellent balance of characteristics such as economic efficiency (inexpensive).
（問題点を解決するための手段）
本発明は、上記問題点を解決するにあたり、アスファル
トを含浸する基材について、鋭意検討した結果、基材に
ある特定の不織シートを用いることによって本発明に到
達した。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention was developed as a result of intensive studies on the base material impregnated with asphalt. reached.
即ち、本発明は、目付３０〜８０ｇ／ｒｄ、空孔率６０
〜９０％のポリエステル長繊維から成る不織シートにア
スファルトを１００〜２５０ｗｔ％含浸してなる透湿・
防水性シートである。That is, the present invention has a basis weight of 30 to 80 g/rd, a porosity of 60
A moisture permeable sheet made by impregnating 100 to 250 wt% of asphalt into a nonwoven sheet made of ~90% polyester long fibers.
It is a waterproof sheet.
本発明に於けるある特定の不織シートとは、目付３０〜
Ｂｏｇ／ｒｄ、好ましくは４０〜６０ｇ／ｎ？、空孔率
６０〜９０％、好ましくは７０〜８５％のポリエステル
長繊維から成る不織シートである。A specific nonwoven sheet in the present invention has a basis weight of 30 to
Bog/rd, preferably 40-60g/n? , a nonwoven sheet made of polyester long fibers with a porosity of 60 to 90%, preferably 70 to 85%.
繊度としては０．５ｄ−１０ｄが好ましく、不織シート
の融着面積は４〜２０％のものが好ましい。The fineness is preferably 0.5 d to 10 d, and the fused area of the nonwoven sheet is preferably 4 to 20%.
本発明のアスファルト含浸シートは、透湿性（透湿度）
、防水性（耐水圧）のバランスの良好なものである。即
ち、透湿度７００〜３５００ ｇ ／ ｒｄ・２４ｈ耐
水圧１５０〜３５０ｍｎ＋ＨｚＯを有する透湿・防水性
シートとなる。目付、空孔率が範囲外では、透湿・防水
性シートが上述の範囲外になる又、強度、経済性の面か
ら好ましくない。The asphalt-impregnated sheet of the present invention has moisture permeability (moisture permeability)
, with a good balance of waterproofness (water pressure resistance). That is, it becomes a moisture permeable/waterproof sheet having a moisture permeability of 700 to 3500 g/rd/24h and a water pressure resistance of 150 to 350 mn+HzO. If the basis weight and porosity are outside the range, the moisture-permeable/waterproof sheet will be outside the above-mentioned range, and it is also unfavorable from the viewpoint of strength and economy.
次いで、不織シートの素材は、透湿・防水性シートの強
度及び、湿潤時の強力保持性、寸法安定性さらに加工時
の耐熱性等の点からポリエステル長繊維が適する。Next, as the material for the nonwoven sheet, polyester long fibers are suitable from the viewpoints of the strength of the moisture permeable/waterproof sheet, strong wet retention, dimensional stability, and heat resistance during processing.
又、不織シートの製造法としては、スパンボンド法が挙
げられ、ウェブ製造後の接着あるいは接合方法は、熱カ
レンダーによる熱圧着した（熱エンボス）不織シートが
好ましく、熱圧着による融着面積が２０％以下のものが
アスファルト含浸時の付着むらがおこりにくい。融着面
積が４％未満では原形を保持することが出来ない。In addition, as a manufacturing method for a non-woven sheet, a spunbond method can be mentioned, and as a method of adhesion or joining after web production, a non-woven sheet that is thermo-pressed (thermo-embossed) using a thermal calendar is preferable, and the fused area by thermo-compression bonding is preferable. If it is less than 20%, uneven adhesion is less likely to occur during asphalt impregnation. If the fused area is less than 4%, the original shape cannot be maintained.
本発明の第一の特徴は、不織シートの構成単繊維から形
成される空隙が、石油アスファルトによって全面層われ
ることなく、微細孔を残して含浸されたため、得られた
透湿・防水性シートは、石油アスファルトの防水性を保
持したまま透湿性を得ることができたことである。その
ためアスファルトの含浸率は１００〜２５０ｗｔ％にす
る必要がある。含浸率１００ｗｔ％未満では含浸シート
の空隙率が大きく、十分な防水が得られない。含浸率が
２５０％１ｔ％以上ではアスファルトの連続層ができ、
透湿性に劣る。尚、アスファルトの含浸率は不織シート
の融着面積が大きい場合は小さくなる。The first feature of the present invention is that the voids formed from the single fibers constituting the nonwoven sheet are impregnated with petroleum asphalt, leaving micropores, without being completely covered with petroleum asphalt, resulting in a moisture-permeable and waterproof sheet. The key is that it was able to achieve moisture permeability while retaining the waterproof properties of petroleum asphalt. Therefore, the asphalt impregnation rate needs to be 100 to 250 wt%. If the impregnation rate is less than 100 wt%, the porosity of the impregnated sheet will be large and sufficient waterproofing will not be obtained. When the impregnation rate is 250% or more than 1t%, a continuous layer of asphalt is formed.
Poor moisture permeability. Note that the asphalt impregnation rate becomes smaller when the fused area of the nonwoven sheet is large.
例えば、融着面積１１％でｉａｏ〜２５０％、２０％で
１００〜１３０％が最適である。For example, the optimum range is iao to 250% for a fused area of 11%, and 100 to 130% for a fused area of 20%.
アスファルトの含浸率は次式で定義される。The asphalt impregnation rate is defined by the following formula.
本発明の第二の特徴は、基材がポリエステル長繊維であ
ることによって従来のアスファルトフェルトの欠点であ
った湿潤時の強力保持性が改善できたことである。The second feature of the present invention is that the base material is polyester long fibers, which improves the strong retention property when wet, which was a drawback of conventional asphalt felt.
本発明の第三の特徴は、含浸する物質にアスファルトを
用いたことにより安価な透湿・防水性シートができたこ
とである。The third feature of the present invention is that an inexpensive moisture-permeable and waterproof sheet can be produced by using asphalt as the impregnating substance.
本発明でいう、アスファルトとは、ストレートアスファ
ルト、ブローンアスファルトのどちらでもよく特に限定
しない。The asphalt referred to in the present invention may be either straight asphalt or blown asphalt, and is not particularly limited.
アスファルトを含浸する条件は、従来のアスファルトフ
ェルトを製造条件と同じでよく特に限定しない。The conditions for impregnating asphalt may be the same as those for manufacturing conventional asphalt felt, and are not particularly limited.
具体的には、ポリエステルの溶融温度以下にアスファル
トを溶融し、不織シートとデツピングする方法、あるい
はアスファルト乳剤、カットバツクアスフラル等で含浸
することが出来る。Specifically, it is possible to melt asphalt at a temperature below the melting temperature of polyester and to dip it with a nonwoven sheet, or to impregnate it with asphalt emulsion, cutback asphalt, or the like.
以下、本発明を実施例にて詳細に説明する。Hereinafter, the present invention will be explained in detail with reference to Examples.
実施例１
スパンボンド法により得られたポリエステル長繊維ウェ
ブ（単糸２ｄ）をいずれも２３０℃に加熱されたパター
ンを有する凹凸ロール（エンボス深さ０．４ｍ）と表面
フラットな金属ロールとの間で処理し、融着面積１１％
に部分的熱圧着された目付５０ ｇ／ｎｒ、空孔率８１
．５％の不織シートを得た。この不織シートを基材とし
て、これにブローンアスファルトを含浸させることによ
って透湿・防水性シートを得た。このシートの物性を第
１表に示す。比較例として、現在市販されているアスフ
ァルトフェルト１７ｋｇ品（比較例−１）、２２ｋｇ品
（比較例−２）を用いた。第１表のごと（、本発明の透
湿・防水性シート（実施例１）は、市販アスファルトフ
ェルトに比べ、透湿度と耐水圧のバランスが良好でしか
も、湿潤時の強力保持もまさっている。Example 1 A polyester long fiber web (single yarn 2d) obtained by a spunbond method was heated to 230°C between a patterned uneven roll (emboss depth 0.4 m) and a metal roll with a flat surface. fused area of 11%
Area weight 50 g/nr, porosity 81
．． A 5% nonwoven sheet was obtained. Using this nonwoven sheet as a base material, a moisture permeable/waterproof sheet was obtained by impregnating it with blown asphalt. The physical properties of this sheet are shown in Table 1. As comparative examples, currently commercially available asphalt felt products weighing 17 kg (Comparative Example-1) and 22 kg (Comparative Example-2) were used. As shown in Table 1, the moisture-permeable and waterproof sheet of the present invention (Example 1) has a better balance of moisture permeability and water pressure resistance than commercially available asphalt felt, and also has better retention when wet. .
実施例２〜５
実施例１において、目付が２０．３０．８０．１００ｇ
／耐の不織シートを基材として、これにストレートアス
ファルトを含浸させることによって透湿・防水性シート
を得た。このシートの物性を第１表に示した。Examples 2 to 5 In Example 1, the basis weight is 20.30.80.100g
A moisture-permeable/waterproof sheet was obtained by impregnating straight asphalt into a non-woven sheet of 100% water resistance as a base material. The physical properties of this sheet are shown in Table 1.
第１表のごとく、目付が３０〜８０ ｇ ／ ｎ（の範
囲が有効であることがわかった。As shown in Table 1, it was found that a range of basis weight of 30 to 80 g/n is effective.
以下余白
〈発明の効果〉
本発明によって得られた、透湿・防水性シートは、建築
物の壁下材、建築、土木工事用の養生シートなどに使用
するに当たり、透湿度と耐水圧のバランスが良く、しか
も、湿潤時の強力低下による耐久性が劣ることない、透
湿・防水性シートとなる。The following margins <Effects of the Invention> The moisture permeable and waterproof sheet obtained by the present invention has a good balance between moisture permeability and water pressure resistance when used as wall sub-materials for buildings, curing sheets for construction and civil engineering work, etc. It is a moisture-permeable and waterproof sheet that has good durability and does not suffer from deterioration in durability due to a decrease in strength when wet.
特許出願人 旭化成工業株式会社Patent applicant: Asahi Kasei Industries, Ltd.
Claims (1)
エステル長繊維から成る不織シートにアスファルトを１
００〜２５０ｗｔ％含浸してなる透湿・防水性シートAsphalt is applied to a nonwoven sheet made of polyester long fibers with a basis weight of 30 to 80 g/m^2 and a porosity of 60 to 90%.
Moisture permeable/waterproof sheet impregnated with 00~250wt%
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8532788A JPH01260057A (en) | 1988-04-08 | 1988-04-08 | Moisture-permeable and waterproof sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8532788A JPH01260057A (en) | 1988-04-08 | 1988-04-08 | Moisture-permeable and waterproof sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01260057A true JPH01260057A (en) | 1989-10-17 |
Family
ID=13855537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8532788A Pending JPH01260057A (en) | 1988-04-08 | 1988-04-08 | Moisture-permeable and waterproof sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01260057A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0453968A2 (en) * | 1990-04-21 | 1991-10-30 | Hoechst Aktiengesellschaft | Casing sheet |
-
1988
- 1988-04-08 JP JP8532788A patent/JPH01260057A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0453968A2 (en) * | 1990-04-21 | 1991-10-30 | Hoechst Aktiengesellschaft | Casing sheet |
| EP0453968A3 (en) * | 1990-04-21 | 1993-02-17 | Hoechst Aktiengesellschaft | Casing sheet |
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