JPS58208498A - Sheet-like article - Google Patents

Sheet-like article

Info

Publication number
JPS58208498A
JPS58208498A JP8892982A JP8892982A JPS58208498A JP S58208498 A JPS58208498 A JP S58208498A JP 8892982 A JP8892982 A JP 8892982A JP 8892982 A JP8892982 A JP 8892982A JP S58208498 A JPS58208498 A JP S58208498A
Authority
JP
Japan
Prior art keywords
sheet
organic
fibers
fibrils
paper
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
JP8892982A
Other languages
Japanese (ja)
Inventor
誠 吉田
川北 幸男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Roshi Kaisha Ltd
Teijin Ltd
Original Assignee
Toyo Roshi Kaisha Ltd
Teijin Ltd
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 Toyo Roshi Kaisha Ltd, Teijin Ltd filed Critical Toyo Roshi Kaisha Ltd
Priority to JP8892982A priority Critical patent/JPS58208498A/en
Publication of JPS58208498A publication Critical patent/JPS58208498A/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は湿式不織シート状物に関し、更に詳しくは地合
1強力1通気性、透水性、濾過特性に優れ、特に液体、
気体の濾過材、保温材、補強材などに用いられるシート
状物に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wet-laid nonwoven sheet material, and more specifically, the present invention relates to a wet-laid nonwoven sheet material, and more specifically, it has excellent texture, strength, air permeability, water permeability, and filtration properties, and is especially suitable for liquids,
It relates to sheet materials used as gas filtration materials, heat insulation materials, reinforcing materials, etc.

従来、液体あるいは気体の高性能濾過材は、流体中の不
純物微粒子あるいは菌体等を高効率で除去する目的のた
め繊維径の非常に小さな濾過材が必要とされ、無機質例
えばメルトブロ一方式で製造された繊維径の小さなガラ
スマイクロウールなとで構成された不織布状シート状物
が用いられて来た。
Conventionally, high-performance liquid or gas filtration materials have required filter materials with extremely small fiber diameters for the purpose of highly efficient removal of impurity particles or bacterial cells in fluids, and inorganic materials, such as those manufactured using a melt-blowing method, have been required. A non-woven sheet made of glass micro wool with a small fiber diameter has been used.

しかしながら、かかるシート状物は柔軟性が非常に乏し
い剛直なガラス繊維で構成されているために取り扱い中
に破壊しやすく、それKより捕集性能の低下、崩壊マイ
クロクールの再飛散などの問題が起こりやす<、4IK
医療関係。
However, since such sheet-like materials are made of rigid glass fibers with very little flexibility, they tend to break during handling, which causes problems such as a decrease in collection performance and re-scattering of the collapsed microcool. Likely<, 4IK
Medical related.

飲料水製造関係などで使用する場合は、濾過効率の低下
や無機質微細纜維の吸入、吸飲による人体への悪影響が
危惧されていた。又、かかる濾過材はひだ加工を必要と
する場合があるが、同様な理由から加工が難かしく加工
上のトラブルも多い。さらにこの濾過材はガラス線維で
構成されているため焼却が田無であり、特に原子力間係
で使用した後、廃棄する場合に1焼却して容積を小さく
することができないため大きな問題となっている。
When used in the production of drinking water, there were concerns that filtration efficiency would decrease and the inorganic fine fibers could be inhaled or ingested, causing negative effects on the human body. Further, such filter media may require pleating, but for the same reason, processing is difficult and there are many troubles during processing. Furthermore, since this filter material is made of glass fiber, it is difficult to incinerate it, which is a big problem because it cannot be incinerated to reduce its volume when it is disposed of, especially after being used in a nuclear power station. .

その上、これらガラスマイクロウールより濾過材t−m
造する際に、ガラスをマイクロウール化するために大量
のエネルギーを必要とし、また該マイクロウール表面が
平滑で水中での分散も悪く、単独で°は抄造が難かしく
、表面の粗面化9分散性改良のためのPH調整、バイン
ダが必゛(8742”“”it、<*<e、b・一方、
保温材、補強材としても、ガラスマイクロウールシート
状物が用いられているが、上述と同様の理由で、取扱い
性、加工性、コスト等の点に問題が侵されている。
Moreover, these glass micro wool filter media t-m
When making paper, a large amount of energy is required to turn glass into microwool, and the surface of the microwool is smooth and poorly dispersed in water, making it difficult to make paper by itself and causing surface roughness. PH adjustment to improve dispersibility, binder required (8742""it, <*<e, b・On the other hand,
Glass micro wool sheet materials are also used as heat insulators and reinforcing materials, but for the same reasons as mentioned above, there are problems in handling, processability, cost, etc.

ガラスマイクロウ−ルのこれらの欠点を改良せんとして
、近年、有機繊維状フィブリルよりなるシート状物の開
発が行なわれるようになって来た。この場合、シート状
物の製造には、素材の線維径が非常に小書な材料を精密
に均一なシート状に構成する必要があるため釦通常湿式
抄紙法が用いられる。
In an attempt to improve these drawbacks of glass micro wool, sheet-like materials made of organic fibrous fibrils have recently been developed. In this case, wet papermaking is usually used to manufacture the sheet-like product because it is necessary to precisely form a material with a very small fiber diameter into a uniform sheet.

従って、従来の無機質高性能濾過材の欠点を解消しうる
有機質高性能濾過材を得るには、まず有機質の微細密雄
状フィブリルを得ることが必要不可欠な条件となる。従
来これら有機繊維状フィブリルを得る方法としては、 イ)合成高分子溶液を該高分子の貧溶媒中に剪断力をか
けながら流下させ、繊維状フィブリルを沈殿させる方法
(フィブリッド法;特公昭35−11851号等)。
Therefore, in order to obtain an organic high-performance filter material that can overcome the drawbacks of conventional inorganic high-performance filter materials, it is essential to first obtain organic fine dense male-like fibrils. Conventionally, methods for obtaining these organic fibrous fibrils include a) a method in which a synthetic polymer solution is allowed to flow down into a poor solvent for the polymer while applying a shearing force to precipitate the fibrous fibrils (fibrid method; Japanese Patent Publication No. 1973- 11851 etc.).

口)合成モノマーを重合させながら剪断をかけ、繊維状
フィブリルを析出させる方法(重合剪断法;特公昭47
−21898号等)。
(1) A method in which fibrous fibrils are precipitated by applying shear while polymerizing synthetic monomers (polymerization shear method; Japanese Patent Publication No. 47
-21898 etc.).

ハ)二1以上の非相溶性合成高分子を渭合し、溶融押出
しくまたは紡糸し)、・切断後毒械的な手段で線維状に
フィブリル化する方法(スプリット法:%!X公昭35
−9651号等)。
c) A method of combining 21 or more incompatible synthetic polymers and melt-extruding or spinning), - A method of fibrillating into fibers by toxic means after cutting (split method: %!X Kosho 35
-9651 etc.).

二)二種以上の非相溶性合成高分子を混合し、溶−押出
しく′!たは紡糸し)、切断後溶剤に浸漬して、一方の
高分子を溶解し、#雄状にフィブリル化する方法(ポリ
マーブレンド溶解法;米国特許第3,382,305号
等)。
2) Mix two or more types of immiscible synthetic polymers and melt-extrude them! A method in which one of the polymers is dissolved and fibrillated into a male shape by cutting and dipping in a solvent (polymer blend dissolution method; US Pat. No. 3,382,305, etc.).

ホ)合成高分子をその溶媒の沸点以上でかつ高圧側から
低圧側へ爆発的に噴出させたのち、線維状にフィブリル
化する方法(フラッシュ紡糸法;特公昭36−1646
0号等)。
e) A method in which the synthetic polymer is explosively ejected from the high-pressure side to the low-pressure side at a temperature higher than the boiling point of the solvent, and then fibrillated into fibers (flash spinning method; Japanese Patent Publication No. 36-1646
0 etc.).

へ)ポリエステル系高分子に該ポリエステルに非相溶の
アルカリ溶液可溶成分をブレンドし、成型後アルカリに
より減量加工後叩解し、繊維状にフィブリル化する方法
(アルカリ減量叩解法;特開昭56−315号等)。
f) A method in which a polyester-based polymer is blended with an alkaline solution-soluble component that is incompatible with the polyester, and after molding, it is subjected to a weight loss treatment with an alkali, and then beaten to fibrillate into a fibrous form (alkali weight loss beating method; JP-A-1983-1986) -315 etc.).

などがある。and so on.

これらのうちで、得られた嗜雄状フィブリル化ノ(ルプ
を抄造し、シート化した不繊布の濾過性能、愼温性能は
製造方法をiP!折すれば+(°れたものが得られる可
卵性がある。しかし、これらの線維状フィブリル化パル
プはいずわも水中での分散性が悪いもの、湿紙のワイヤ
剥離性のわるいもの、不織布のムラが著シ、〈悪いもの
、不織布を高空@本化しにくいもの、濾過性能の悪い本
の、あるいFi熱寸法安定−性、湿−寸法安定性などの
物性に問題があるもの等それぞれに短所−を有しており
、湿式抄紙適性のすぐれた高性能p過材、保温材、補強
材としての有機材料は未だに工業化されていない。
Among these, the filtration performance and the temperature performance of the nonwoven fabric made from the resulting fibrillated fibers can be obtained by changing the manufacturing method to iP! However, these fibrous fibrillated pulps have poor dispersibility in water, poor wire removability of wet paper, and marked unevenness of nonwoven fabrics. Each paper has its own disadvantages, such as those that are difficult to make into paper sheets at high altitudes, those that have poor filtration performance, or those that have problems with physical properties such as Fi thermal dimensional stability and wet dimensional stability. Organic materials that are highly suitable for use as high performance protective materials, heat insulating materials, and reinforcing materials have not yet been industrialized.

本発明者らは、かかる従来のシート状物の欠点を解消し
、抄紙適性にすぐれ、柔軟性があり。
The present inventors have solved the drawbacks of such conventional sheet-like products, and have excellent paper-making suitability and flexibility.

取扱性がよく、加工性に優れ、かつ強力濾過性能に優れ
たシート状物に関し鋭意検討の結果本発明に到達したも
のである。
The present invention was arrived at as a result of extensive research into a sheet-like material that is easy to handle, has excellent processability, and has excellent strong filtration performance.

すなわち本発明は、平均−維径が0.05〜5− であ
る有!9−維状フイブリル40〜80重量チと、平均−
維径が3〜25pmTある有機繊維60〜20重量%と
を混合抄造したシート状物であって、空隙率0.87〜
0.96における通気抵抗係数が6 X 10’〜4.
5 X 10’ dyn−mae/cm’であることを
特徴とするシート状物である。
That is, the present invention has an average fiber diameter of 0.05 to 5. 9-Fibrillar fibrils 40-80% by weight, average-
A sheet-like material mixed with 60 to 20% by weight of organic fibers having a fiber diameter of 3 to 25 pmT, and having a porosity of 0.87 to 0.87.
The ventilation resistance coefficient at 0.96 is 6 x 10' to 4.
It is a sheet-like material characterized by having a size of 5 x 10'dyn-mae/cm'.

本発明忙おいて使用する有機唯雄状フィブリルの平均繊
維径は0.05〜5μmであることが必要であり特に0
.10〜4μmであることが好ましい。
The average fiber diameter of the organic male fibrils used in the present invention must be 0.05 to 5 μm, and especially 0.05 μm to 5 μm.
.. It is preferable that it is 10-4 micrometers.

平均繊維径が太すぎると、抄紙の際、湿紙がワイヤメツ
シュから剥離しに〈〈な!l1通気抵抗係数も低くなっ
て、微粉塵を捕集する勤王が低下してしまう。
If the average fiber diameter is too thick, the wet paper will peel off from the wire mesh during paper making. The l1 ventilation resistance coefficient also becomes low, and the ability to collect fine dust decreases.

また平均繊維径か細すぎると不織布の空隙率が小さくな
り、通気抵抗係数が大きくなってp□通過材圧力損失が
大きくなり、更には抄紙時の湿紙のワイヤメツシュから
の剥離が著しく悪く1   。、!m、t’o ) 5
7’に、やあ、。、工おい。
On the other hand, if the average fiber diameter is too small, the porosity of the nonwoven fabric will be small, the ventilation resistance coefficient will be large, the pressure loss of the P□ passage material will be large, and furthermore, the peeling of the wet paper from the wire mesh during paper making will be extremely poor1. ,! m, t'o) 5
Hello to 7'. , Koi.

一方、有機繊維の半jlIF鑞住に3〜2apmとTる
ことか必要で特に微粉塵の捕集効率のうえから4.5〜
20μmであることが更に好ましい。また有機繊維の平
均繊維長は1〜15鴫であることが水中での分散性、得
られた不織布の強力及び短繊維に切断するに要するコス
トの点で好ましく、2〜10+mであることが更に望ま
しい。
On the other hand, it is necessary to use 3 to 2 apm for organic fiber half-jlIF Zuisumi, and especially from the viewpoint of fine dust collection efficiency, it is necessary to use 4.5 to 4.5 apm.
More preferably, the thickness is 20 μm. The average fiber length of the organic fibers is preferably 1 to 15 m in terms of dispersibility in water, the strength of the obtained nonwoven fabric, and the cost required to cut into short fibers, and more preferably 2 to 10+ m. desirable.

有機繊維の断面形状は任意であるが、断面の長径と短径
の比(長径/@径)が4以下、特に2堤下である偏平断
面繊維を用いると濾過性能か向上するので好ましい。
Although the cross-sectional shape of the organic fibers is arbitrary, it is preferable to use flat cross-section fibers in which the ratio of the major axis to the minor axis (major axis/@diameter) of the cross section is 4 or less, particularly less than 2 banks, since the filtration performance will be improved.

本発明のシート状物において有機繊維状フィブリルの混
入率は40〜so**%、好ましくは50〜75重量%
、また有機繊維の混入率は60〜20i&fi%% 好
it、<ハ50〜25重量%である。
In the sheet material of the present invention, the mixing rate of organic fibrous fibrils is 40 to so**%, preferably 50 to 75% by weight.
Also, the mixing rate of organic fibers is 60 to 20% by weight, preferably 50 to 25% by weight.

有機+1維状フイブリルの混入率が401量係未満にな
ると抄紙時のワイヤメツシュからの剥離性が悪くなると
ともに、流体からの不純物微粒子の除去性能が著しく悪
くなる。一方混入率が80重量%を超えると湿紙のワイ
ヤメツシュからの剥離が悪くなるととも忙シート状物の
斑が多く、また得られた乾紙強力も低く所定の物性を発
現するために大量のバインダを必要とし、v5過性能(
圧力損失+(対する捕集効率の関係)も悪くなる。
When the mixing ratio of organic +1 fibrous fibrils is less than 401% by weight, the peelability from the wire mesh during papermaking becomes poor, and the ability to remove impurity particles from the fluid becomes significantly poor. On the other hand, if the mixing ratio exceeds 80% by weight, the peeling of the wet paper paper from the wire mesh becomes difficult, and there are many spots in the wet paper sheet, and the strength of the dry paper obtained is low, and a large amount of binder is required to achieve the desired physical properties. and v5 overperformance (
Pressure loss + (relationship between collection efficiency) also deteriorates.

本発明のシート状物は空隙率(6)を0.87〜0.9
6好IL<Ho、ss 〜0.94とすることが必要で
このときの通気抵抗係数には、6Xl♂〜4.5X10
’好ましく d 3.5 X 10’ 〜5 X 10
’dyn°aec/z’  であることが必要である。
The sheet material of the present invention has a porosity (6) of 0.87 to 0.9.
It is necessary to set 6 good IL < Ho, ss to 0.94, and the ventilation resistance coefficient at this time is 6Xl♂ to 4.5X10
'Preferably d 3.5 X 10' ~5 X 10
'dyn°aec/z' is required.

即ち空隙率が小さすきると濾過性能の低下が著しくなり
、lた空隙率が大きすぎると抄造の条件が厳しくなって
生産性が著しく悪くなり、更には得られたシート状物の
強力9寸法安定性が著しく悪くなる。また通気抵抗係数
が大きすぎると圧力情夫が著しく高くなり濾過材として
不適となり、小さすぎると圧力損失は低くなるが、流体
中の微粒子の捕集効率が著しく悪くなる。
In other words, if the porosity is too small, the filtration performance will drop significantly, and if the porosity is too large, the conditions for papermaking will become severe, resulting in a marked decrease in productivity, and furthermore, the resulting sheet will have poor strength and dimensional stability. sex becomes significantly worse. On the other hand, if the ventilation resistance coefficient is too large, the pressure resistance will be extremely high, making it unsuitable as a filter material, and if it is too small, the pressure loss will be low, but the efficiency of collecting fine particles in the fluid will be significantly reduced.

本発明において、有機fIi維状フィブリルはメルトプ
ロー法、スプリット法、フラッシュ紡糸法、ポリマーブ
レンド−溶解法、アルカリ減量叩解法などによって製造
されるが、このうちアルカリ減量叩解法によれば、抄紙
適性、熱的安定性、濾過特性9強力〜に優れた有機繊維
状フィブリルが得られるので好ましい。
In the present invention, organic fIi fibrous fibrils are produced by a melt blow method, a split method, a flash spinning method, a polymer blend-dissolution method, an alkali weight loss beating method, etc. Among these, according to the alkali weight loss beating method, papermaking suitability, This method is preferable because organic fibrous fibrils having excellent thermal stability and filtration properties of 9 to 90% strength can be obtained.

アルカリ減ii曲解伝によって有機線維状フィブリルを
製造するには、脈状芳香族ポリエステルと該ポリエステ
ルに相i江がなく、アルカリ性梧液に可俗の有機化合物
2例えば有機スルホン酸餐属塩、ポリアルキレングリコ
ール等トの混合物を浴融紡糸、延伸し、得られた繊維を
適当な繊維長に切断後、アルカリ性浴液で減量処理し、
次いで叩解してフィブリル化する方法が好適である。
In order to produce organic fibrous fibrils by alkali reduction, it is necessary to add organic compounds 2, such as organic sulfonic acid salts, polyesters, etc. A mixture of alkylene glycol, etc. is bath-melt spun and drawn, the resulting fibers are cut into appropriate fiber lengths, and the weight is treated with an alkaline bath solution.
A method in which the material is then beaten and fibrillated is preferred.

かかる機状芳香族ポリエステルとしては具体的には、ポ
リエチレンテレフタレート、ポリエチレンテレ7タレー
ト/インフタレート、ポリエチレンテレフタレート/ヘ
キサヒドロテレフタレート、ポリエチレンテレフタレー
ト15−(ナトリウムスルホ)インフタレート、ポリ(
p−へキサヒドロキシリレン・テレフタレート)、ポリ
(ジフェニロール・プロパンイソ7タレート)及びポリ
エチレンナフタレ/ジカルボキシレート類(特に2,6
および2,7異性体誘導体ならびにヘキサメテレンピベ
ンゾエト)等があるが、このうちでもテレフタル酸、イ
ン7タル酸、ナフタリンシカ々ポ/酸、ジフェニルジカ
ルホン酸など二官能性芳香族カルホン酸を鎖成分とし、
エチレングリコール、トリメチレングリコール、テトラ
メチレングリコール、ヘキサメチレングリコールなどグ
リコールをグリコール成分とする、0状芳香族ポリエス
テルが好首しくとくに一般式 %式%) 〔nは2〜6の整むを示す〕 で示−れる−り返し単位を主たる構成成分とす11  
    るポリエステルが用い゛られ、その酸成分、グ
リ1 コール成分の一部をそれぞれ他の三官能カルボン酸、 
イj+のグリコール成分で置きかオ、でもよいことは営
うまでもない。これらのポリエステルは、所望ならばつ
や消し剤、増粘剤、響料等の添加剤を含んでいてもよい
Specifically, such functional aromatic polyesters include polyethylene terephthalate, polyethylene terephthalate/inphthalate, polyethylene terephthalate/hexahydroterephthalate, polyethylene terephthalate 15-(sodium sulfo)inphthalate, poly(
p-hexahydroxylylene terephthalate), poly(diphenylol propane isohetalate) and polyethylene naphthalene/dicarboxylates (especially 2,6
and 2,7 isomer derivatives and hexamethelenepibenzoate), among which difunctional aromatic carbonic acids such as terephthalic acid, in-7thalic acid, naphthalene sica polyacid/diphenyldicarphonic acid, etc. As a chain component,
O-type aromatic polyesters containing glycol as a glycol component, such as ethylene glycol, trimethylene glycol, tetramethylene glycol, hexamethylene glycol, etc., are particularly preferred (general formula %) [n indicates an order of 2 to 6] The main component is the repeating unit shown in 11
Polyester is used, and part of its acid component and glycol component are replaced with other trifunctional carboxylic acids,
It's okay to leave it with the glycol component of Ij+, but there's no need to do anything good. These polyesters may contain additives such as matting agents, thickeners, and sounding agents, if desired.

また有機繊維としては、任意の大然侮維、化字縮維1合
成ik#Ikを用いることができるが、特にホリアミド
醗##、ポリエステル繊維、ポリプロピレン麹#l:%
の熱可塑性合成繊維が抄紙時における湿紙のワイヤメツ
シュからの剥◆性を向上させ、シート状物の強力を次4
めるうえで好筐しく、なかで本壱機轍雄状フイフリル忙
用いたのと同様の線状芳香族ポリエステルか最適である
In addition, as the organic fiber, any Daizen fiber, Kaji fiber 1 synthetic ik#Ik can be used, but in particular, holamide fiber ##, polyester fiber, polypropylene koji #l:%
The thermoplastic synthetic fibers improve the peelability of wet paper from wire mesh during paper making, and increase the strength of sheet materials.
Among these, a linear aromatic polyester similar to that used in this machine's rutted-shaped fifrills is most suitable.

本発明のシート状物は、前記有機!&給状状フィブリル
バルブ前V有機繊維を短かく切断したものを所定のi・
台で混合し、湿式抄紙法により抄造することによって得
ることができる。抄紙に圃、し1、製紙4E+性を11
め、製品強力を廃めるための湿潤紙力増強剤、乾燥紙力
増強剤、内添バインタウ外添バインタなどを使用するこ
とは好ましい実施態様である。
The sheet-like material of the present invention is made of the above-mentioned organic material! & In front of the feed-like fibril valve, cut the V organic fiber into short pieces and
It can be obtained by mixing on a table and making paper using a wet paper making method. Field for paper making, 1, paper making 4E + property 11
Therefore, it is a preferred embodiment to use a wet paper strength enhancer, a dry paper strength enhancer, internally added binda, externally added binder, etc. to eliminate product strength.

本発明のシート状物は抄紙時において、−湿紙がワイヤ
メツシュから容4に剥離し、円滑に抄紙することができ
、流体の通盪抵抗が小さく、不紳物の捕弊性能がすぐれ
、し、かも柔軟性をもつため取扱い75−容易で、有機
物が主体であるたぬに威勢性も良好であり、しかも強力
が大きく耐久性にfわ、かつ保温性が良好でを・す、ま
た使用後の焼却減容も極めて容易である。このためこの
FN材はエアロゾル等の空気中の微小粉じん、雛酌、あ
るいは湿式の液体中の不純物除去の用達、更には各種保
温刷、補強剤に!)I適である。
During paper making, the sheet-like material of the present invention allows the wet paper to be peeled off from the wire mesh in a voluminous manner, allowing for smooth paper making, low resistance to fluid passage, excellent ability to catch undesirable materials, and It is easy to handle due to its flexibility, and has good strength even though it is mainly made of organic matter.It is also strong, durable, and has good heat retention, and can be used. Subsequent volume reduction by incineration is also extremely easy. Therefore, this FN material can be used to remove fine dust in the air such as aerosols, dust particles, or impurities in wet liquids, and can also be used as a reinforcing agent for various thermal printing plates! )I is suitable.

以下実施例において本発明を具体的に説明するが、本発
明は坩下の実施例に拘束されるものではない。
EXAMPLES The present invention will be specifically explained in Examples below, but the present invention is not limited to the Examples below.

なお、実施例においてシート状物の特性は、下記の方法
によって測定し、たものである。
In the Examples, the properties of the sheet-like materials were measured by the following method.

平均使維径(μm):#絹状フィブリル、有機繊維を単
独で抄紙し、任意の位置を走査型を子顕微ψで撮影しく
IIL維状雄状ブリル竜倍率2000倍、有機繊維2.
00倍)、ランタームに抽出した鍮維径を1枚当り10
点。
Average fiber diameter (μm): # Silk-like fibrils and organic fibers are individually made into paper, and a scanning type image of an arbitrary position is photographed using a microscope ψ.
00 times), the diameter of brass fibers extracted at random is 10 times per piece.
point.

計100点読み取り算術平均(Cより求めた。A total of 100 points were read and the arithmetic mean (obtained from C).

充填率(α) : JIS L−1079に基づきシー
ト状物の目付1’/m’)及び10f/c+4の荷重下
での厚さt (car )を求め次式により算出した。
Filling rate (α): Based on JIS L-1079, the weight 1'/m') of the sheet-like material and the thickness t (car) under a load of 10 f/c+4 were determined and calculated using the following formula.

尚シート状物の補正比重は次式により求める。The corrected specific gravity of the sheet-like material is determined by the following formula.

ソート状物の補正比重=〔有機線維状フィブリルの真比
重×混合率(重量%)十有機噴維の真比重X混合率(重
tチ)”IX−− 00 空隙率ε;次式により求める。
Corrected specific gravity of sorted material = [True specific gravity of organic fibrous fibrils x Mixing ratio (weight%) 10 True specific gravity of organic fibrils .

ε = 1− α 圧力損失tJ’ (tm烏0);濾過材間空気を紋速4
.75Cm /S e eで通気さセた時の通気抵抗を
水柱マ/!メータにより求めた。
ε = 1- α Pressure loss tJ' (tm Karasu 0);
.. The ventilation resistance when vented at 75Cm/S e e is the water column ma/! Obtained using a meter.

透過率η(Co/Ci ) ;平均粒径0.3μmのジ
オクチルフタレー) (DOP)粒子を発生させ、線速
4 、75 tln /leeでシート状物を通過場せ
、その前後での空気の一部を株数し、それぞれのDOP
 IQ子の111k (CI+ + CI )をメー7
科学■51i!41uo型マルチダスト刀ウンタにより
測躍し次式により算出した。
Transmittance η (Co/Ci); dioctyl phthalate (DOP) particles with an average particle size of 0.3 μm are generated and passed through a sheet at a linear velocity of 4.75 tln/lee, and the air before and after it is generated. The number of shares is determined by the DOP of each
IQ child's 111k (CI+ + CI) is 7
Science■51i! The jump was measured using a 41uo multi-dust sword counter and calculated using the following formula.

通気抵抗係d k (dyn’see/cfl+’ )
 1次式によって求めらiLる。
Ventilation resistance factor d k (dyn'see/cfl+')
It is determined by a linear equation.

ανt ここでtはシート状物の厚さく鋸)、αは充横イ・、ν
HFt気度(CC101!//IIeC)であってJI
S L1079にもとづきフラジール型試験機を用いて
1定したものでチ、る。
ανt Here, t is the thickness of the sheet material), α is the width of the sheet, ν
HFt air temperature (CC101!//IIeC) and JI
Tested based on SL1079 using a Frazier type tester.

シート?;S 吻%力(Ky ) ; JIS F’8
113に従い測定1    61・ ;S当りらぞ・糾効i P、 : ASTMS1518
に記述されている方法によりハ抵抗値c (c 1 o
/2m)を求め、シート状物の嵩b(cd/?)とKよ
り次式から求める。
Seat? ;S proboscis % force (Ky); JIS F'8
Measurement 1 according to 113 61.;
The resistance value c (c 1 o
/2m), and from the following equation from the volume b (cd/?) of the sheet-like material and K.

R= c X b  (X 100−3C1o−”/f
 )尚、b=t/充増51f、 e Xシート状物の禰
正比重実#例 常fl Kよって得られたポリエチレンテレフタレート
(35℃のO−クロロフェノール浴液でdilli定し
た4!i限粘す。、s s )を295℃で溶融し、ギ
ヤポンプで計量した後285cで加熱された混線スクリ
ューに供給し次。
R= c X b (X 100-3C1o-”/f
) In addition, b = t / full increase 51f, e , s s ) was melted at 295°C, metered with a gear pump, and then fed to a mixed screw heated at 285°C.

一方、炭素数8〜20で干乾炭素数が14であるアルキ
ルスルホン酸ソーダ混合物を150℃でギヤポンプで計
量した後285℃に加温された前記混練スラリ。ニーに
供給した。アルキルヌルホン酸ソーダのポリエチレンテ
レフタレートに対する温合率は41′tチである。混線
スクリューで混合したブレンドポリマーを押し出しFt
型してチップ枦の成型物を得たG この得られたチップを乾燥後環状スリットの一部が開口
した馬蹄形の開口部を持つノズルを有するものを使手し
吐出し、常法に従って溶融紡糸し、中空糸を得た。これ
らの原糸を合糸。
On the other hand, the kneaded slurry was prepared by measuring a sodium alkyl sulfonate mixture having 8 to 20 carbon atoms and a dry carbon number of 14 at 150°C using a gear pump, and then heating the mixture to 285°C. supplied to the knee. The heating rate of sodium alkyl sulfonate to polyethylene terephthalate is 41't. Extrude the blended polymer with a mixed screw
After molding and obtaining a molded chip shape, the obtained chips were dried and discharged using a nozzle having a horseshoe-shaped opening in which a part of the annular slit was opened, and melt-spun according to a conventional method. A hollow fiber was obtained. Combine these raw threads.

延伸、熱セットし、17万d・のトウ(単繊維デニール
1.5)を得た。
It was stretched and heat set to obtain a tow of 170,000 d· (single fiber denier 1.5).

このトウをギロチンカッターで3mの長さに+′TIF
frシ5た優、浴比1:100で98±1℃に保ったカ
セイノーダ水溶液(aof/l)に投入し撹拌しながら
所定時間処理し、水洗、乾燥した慢、水に分散し、濃度
1チのスラリーとして能谷埋慎@製デメスク・リイファ
イナで叩解し脩雄状フィブリルのパルプを得た。
Cut this tow into a length of 3m using a guillotine cutter +'TIF
It was poured into a caseinoda aqueous solution (aof/l) maintained at 98 ± 1°C at a bath ratio of 1:100, treated for a specified time with stirring, washed with water, dried, dispersed in water, and prepared with a concentration of 1. The slurry was beaten with a Demesque Refiner manufactured by Noya Umeshin @ to obtain a pulp with osmotic fibrils.

一方、断面形状、−維径、繊錐長を裡々変更したポリエ
チレンテレフタレート短繊維を用意し、この短−献を前
記パルプに所定の混合率になるように混合し、混合され
たスラリーにノζルプ1會に対して1重1にチのPVA
 11維状バインダ(#クラレ製)を添加し、さらにパ
ルプ濃度と1.5 t / 7.9 tとなるように濃
度調整し、東洋f−磯■製タツビ式スタンダードシート
マシンで抄造し、軽い希荷重(s o o t )のコ
ーチロールにより脱水し、ワイヤメツシュより剥離した
On the other hand, polyethylene terephthalate short fibers with various cross-sectional shapes, fiber diameters, and fiber lengths are prepared, and the short fibers are mixed with the pulp at a predetermined mixing ratio, and then added to the mixed slurry. ζ PVA for 1 meeting
11 fibrous binder (manufactured by #Kuraray) was added, and the density was further adjusted to match the pulp density of 1.5 t/7.9 t, and the paper was made using a Tatsubi type standard sheet machine manufactured by Toyo F-Iso. It was dehydrated using a coach roll with a dilute load (so t ) and peeled off from the wire mesh.

尚比較用として416のみJTSP8209の方法に従
って抄祇した。その乾燥された不懺布を所定のメラミン
水溶/l!に浸漬し、常法により乾燥。
For comparison, only 416 samples were extracted according to the method of JTSP8209. The dried unprinted fabric is dissolved in melamine/l! Soaked in water and dried using conventional methods.

熱処理を行ないシート状物を得た。A sheet-like product was obtained by heat treatment.

実験条件−および結果を次表に示す。The experimental conditions and results are shown in the table below.

通気抵抗係数6×1♂dyn−s・c/cm’ より大
きい扁5,7,13,15.16は圧力損失が大きく濾
過材として用いるには不適当であった。
Platelets 5, 7, 13, and 15.16 having a ventilation resistance coefficient of 6×1♂dyn-s·c/cm' had a large pressure loss and were unsuitable for use as filter media.

一方、通気抵抗係数が4 + 5 X 10’ dyn
・see /crR’より小さい41,6.11は圧力
損失が低いが0 、3 pm DOP粒子の捕集効率が
著しく悪<、濾過用シート状物としては不適当であった
On the other hand, the ventilation resistance coefficient is 4 + 5 x 10' dyn
41,6.11, which is smaller than see /crR', has a low pressure loss, but the collection efficiency of 0.3 pm DOP particles is extremely poor, making it unsuitable as a sheet material for filtration.

一方、有機禮雄状フィブリルの平均径が0.05μm 
未満の扁5はパルプのワイヤメツシュへの食い込みのた
め湿紙のワイヤフッシュからの剥離が著しく悪い。一方
平均径が5μtn″ft超えるA 6 Fi湿紙のNk
闇剥離のためワイヤからの剥離が悪<、DOP八子へ捕
集効tも著しく悪い。また有機畷雄状フイフリルの混入
率が40チより低いものI復ワイキメッシュからの剥離
性が悪く、DOP粒子の捕集5ejJ率も悪い(41,
17,18)一方混入率75:80%を超えるとパルプ
のワイヤメツシュへの食い込みが多く、剥離性が悪く、
シート状物の空隙率も低い。また濾過性能(圧力璃失に
対する0、3μtn DOP粒子の捕集効率)も悪い(
Al 5 )。
On the other hand, the average diameter of organic male fibrils is 0.05 μm.
If the thickness is less than 5, the peeling of the wet paper from the wire mesh is extremely difficult because the pulp bites into the wire mesh. On the other hand, Nk of A 6 Fi wet paper whose average diameter exceeds 5μtn″ft
Due to the dark peeling, the peeling from the wire is poor, and the collection effect on the DOP Yako is also extremely poor. In addition, when the mixing rate of organic ridged fifuryls is lower than 40 cm, the peelability from the I-reduced mesh is poor, and the collection rate of DOP particles is also poor (41,
17, 18) On the other hand, if the mixing ratio exceeds 75:80%, the pulp will dig into the wire mesh a lot, resulting in poor peelability.
The porosity of the sheet material is also low. In addition, the filtration performance (collection efficiency of 0.3μtn DOP particles against pressure loss) is also poor (
Al5).

一方、有機繊維の平均m線径が3μm未満のム7#−i
ワ・イヤーメツシュからの剥離性が悪く、シート状物の
空隙寛も低い6また濾過性能も悪い。
On the other hand, M7#-i in which the average m-line diameter of organic fibers is less than 3 μm
The releasability from the wire ear mesh is poor, and the porosity of the sheet-like material is low6, and the filtration performance is also poor.

また平均繊維径か25μmを超えるAllは湿紙のワイ
ヤメツシュからの剥離が悪く、シート状物にポーラスな
斑がみられ、rloPの捕集効率が著しく悪い。
In addition, All with an average fiber diameter of more than 25 μm has poor peeling from the wet paper wire mesh, and porous spots are observed on the sheet-like material, resulting in extremely poor rloP collection efficiency.

またプレス操作により空雨犀を0.87以下としたA1
6はp過性能が著しく悪い。
In addition, A1 with a sky rain rhinoceros lower than 0.87 by press operation.
No. 6 has extremely poor p-overperformance.

これに対して、本発明のシート状物は、抄紙性、通気性
、濾過特性に優些ており、762〜4゜ム8〜10のシ
ート状物は@置所熱特性としての重量当9熱絶縁効率が
7×10 αO・?4ン′を以上あり、保氾性YK4優
れている。
On the other hand, the sheet-like material of the present invention has excellent paper-making properties, air permeability, and filtration properties, and the sheet-like material with a diameter of 762 to 4 mm and 8 to 10 mm has a thermal property of 9 Thermal insulation efficiency is 7×10 αO・? It has more than 4 inches and has excellent flood retention.

峙許出恥人 帝人株式会1社 東洋4紙株式会ヒ 代理人 升理士  前  1) 細  博 i−二。Disgraced person Teijin Ltd. 1 Toyo 4 Shimbun Co., Ltd. Agent Masu Rishi 1) Hiroshi Hiroshi I-2.

Claims (1)

【特許請求の範囲】 1、 平均線維径が0.05〜5μmである有機線維状
フィブリル40〜80重量%と、平均繊維径が3〜25
μmである有機繊維60〜20重量%とを混合抄造した
シート状物であって、空llJ率0.87〜0.96−
における通気抵抗係数が6 X 10’ 〜4.5 X
 10’ dyn−sec/cy’ であること1に特
徴とするシート状物。 2、 M機繊維の平均繊維長が1〜15−である特許請
求の範囲第1項記載のシート状物。 1 有機線維が断面偏平度4以下の偏平断面繊維である
特許請求の範囲第1項又は第2項記載のシート状物。 t 有機繊維状フィブリルが一般式 %式% ) で表わさる繰り返し本位を主とするポリエステルにより
構成されている特許請求の範囲第1項乃至第3項のうち
いずれか1項記載のシート状物。
[Scope of Claims] 1. 40 to 80% by weight of organic fibrous fibrils having an average fiber diameter of 0.05 to 5 μm and 3 to 25% by weight of organic fibrous fibrils having an average fiber diameter of 3 to 25 μm.
A sheet-like material made by mixing 60 to 20% by weight of organic fibers with a void size of 0.87 to 0.96%.
The ventilation resistance coefficient is 6 x 10' to 4.5 x
1. A sheet-like article characterized in 1. that it is 10'dyn-sec/cy'. 2. The sheet-like article according to claim 1, wherein the average fiber length of the M machine fibers is 1 to 15. 1. The sheet-like article according to claim 1 or 2, wherein the organic fibers are flat cross-section fibers with a cross-sectional flatness of 4 or less. t. The sheet-like article according to any one of claims 1 to 3, wherein the organic fibrous fibrils are composed of a polyester mainly consisting of repeating particles represented by the general formula %.
JP8892982A 1982-05-27 1982-05-27 Sheet-like article Pending JPS58208498A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8892982A JPS58208498A (en) 1982-05-27 1982-05-27 Sheet-like article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8892982A JPS58208498A (en) 1982-05-27 1982-05-27 Sheet-like article

Publications (1)

Publication Number Publication Date
JPS58208498A true JPS58208498A (en) 1983-12-05

Family

ID=13956587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8892982A Pending JPS58208498A (en) 1982-05-27 1982-05-27 Sheet-like article

Country Status (1)

Country Link
JP (1) JPS58208498A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6195416U (en) * 1984-11-28 1986-06-19
JPS63232814A (en) * 1987-03-20 1988-09-28 Daicel Chem Ind Ltd Precision filter paper
JPS63236512A (en) * 1987-03-23 1988-10-03 Oshidari Kenkyusho:Kk Air filter filtering medium
JP2011045825A (en) * 2009-08-26 2011-03-10 Denso Corp Filter medium for fuel filter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6195416U (en) * 1984-11-28 1986-06-19
JPH0326902Y2 (en) * 1984-11-28 1991-06-11
JPS63232814A (en) * 1987-03-20 1988-09-28 Daicel Chem Ind Ltd Precision filter paper
JPS63236512A (en) * 1987-03-23 1988-10-03 Oshidari Kenkyusho:Kk Air filter filtering medium
JP2011045825A (en) * 2009-08-26 2011-03-10 Denso Corp Filter medium for fuel filter

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