JPH0160120B2 - - Google Patents
Info
- Publication number
- JPH0160120B2 JPH0160120B2 JP4343286A JP4343286A JPH0160120B2 JP H0160120 B2 JPH0160120 B2 JP H0160120B2 JP 4343286 A JP4343286 A JP 4343286A JP 4343286 A JP4343286 A JP 4343286A JP H0160120 B2 JPH0160120 B2 JP H0160120B2
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- water
- paper
- alginate
- fiber
- 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.)
- Expired
Links
- 239000000835 fiber Substances 0.000 claims description 76
- 239000011230 binding agent Substances 0.000 claims description 33
- 235000010443 alginic acid Nutrition 0.000 claims description 26
- 229920000615 alginic acid Polymers 0.000 claims description 26
- 229940072056 alginate Drugs 0.000 claims description 21
- -1 alginate alkylene glycol ester Chemical class 0.000 claims description 21
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 239000000017 hydrogel Substances 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 10
- 239000002657 fibrous material Substances 0.000 claims description 10
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 10
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 229920000297 Rayon Polymers 0.000 description 18
- 239000002964 rayon Substances 0.000 description 18
- 238000010008 shearing Methods 0.000 description 6
- 238000009987 spinning Methods 0.000 description 6
- 230000015271 coagulation Effects 0.000 description 5
- 238000005345 coagulation Methods 0.000 description 5
- 239000000470 constituent Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000000783 alginic acid Substances 0.000 description 4
- 229960001126 alginic acid Drugs 0.000 description 4
- 150000004781 alginic acids Chemical class 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229920003051 synthetic elastomer Polymers 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000005061 synthetic rubber Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000002166 wet spinning Methods 0.000 description 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229920002101 Chitin Polymers 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 102000008186 Collagen Human genes 0.000 description 1
- 108010035532 Collagen Proteins 0.000 description 1
- 241000272201 Columbiformes Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- HDSBZMRLPLPFLQ-UHFFFAOYSA-N Propylene glycol alginate Chemical compound OC1C(O)C(OC)OC(C(O)=O)C1OC1C(O)C(O)C(C)C(C(=O)OCC(C)O)O1 HDSBZMRLPLPFLQ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229920001436 collagen Polymers 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000013305 flexible fiber Substances 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- WBJINCZRORDGAQ-UHFFFAOYSA-N formic acid ethyl ester Natural products CCOC=O WBJINCZRORDGAQ-UHFFFAOYSA-N 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002439 hemostatic effect Effects 0.000 description 1
- 150000003840 hydrochlorides Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 230000002175 menstrual effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000144 pharmacologic effect Effects 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 239000000770 propane-1,2-diol alginate Substances 0.000 description 1
- 235000010409 propane-1,2-diol alginate Nutrition 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
- Paper (AREA)
Description
産業上の利用分野
本発明はヒドロゲル系バインダー繊維含有シー
トに関するものである。さらに詳しくいえば、本
発明は、例えばトイレツトペーパー、紙おむつそ
の他デイスポーザブルな生理衛生製品などに好適
な、乾燥状態では高い強度を有し、かつ水中にお
いては小さいせん断力でも各構成繊維に容易に離
解しうる紙状シートに関するものである。
従来の技術
自己接着性を有しない、あるいは有していても
極めて小さいために、単独では紙状シートに抄造
することができないパルプ状物や短繊維を抄造す
る場合には、これまでバインダーとして、合成樹
脂及び合成ゴムエマルジヨン、ホツトメルト接着
剤、繊維状のものとしては、例えばポリビニルア
ルコール繊維、エチレン―酢酸ビニル共重合体繊
維、ポリエチレン繊維、ポリプロピレン繊維又は
これらの複合繊維などや粉末状のものも用いられ
ている。これらのバインダーは、合成ゴム、合成
樹脂の高分子接着性を利用したり、所要の主材と
なる短繊維に混合し、紙状体を形成させたのち、
加熱し、これらの短繊維同士を熱融着するものが
主体である。
ところで、近年水洗トイレ用のトイレツトペー
パーや生理用品の需要が増加するとともに、使用
後水中に投入したときに、速やかに繊維状に離解
される紙状シート製品への要望が高まつてきてい
る。
しかし、従来のバインダーのうち、合成ゴムや
合成樹脂系エマンジヨンやエチレン酢酸ビニル共
重合体、ポリエチレン、ポリプロピレンから成る
もは、繊維間結合剤が水に対して安定なために、
抄造したものかつ再び繊維状に離解することは非
常に困難である。また、ポリビニルアルコール繊
維も常温下では水中で膨潤するだけで、溶解しな
いので、加熱するか、化学薬品を添加するか、あ
るいはパルバーなどにより大きなせん断力を与え
るなど特別な処理を加えなければ離解することが
できない。
したがつて、これまで水洗トイレのフラツシユ
流程度のせん断力で、簡単に個々の繊維に離解し
うる、実質的に自己接着性を有しない繊維材料を
主体とした紙状シート製品は全く知られていなか
つた。
発明が解決しようとする問題点
本発明の目的は、このような事情のもとで、実
質的に自己接着性を有しない繊維材料を主体と
し、かつ乾燥状態では高い強度を有する上に、水
中においては小さいせん断力でも各構成繊維に容
易に離解しうる紙状シートを提供することにあ
る。
問題点を解決するための手段
本発明者らは、前記目的を達成するために鋭意
研究を重ねた結果、アルギン酸とアルギン酸アル
キレングリコールエステルとの混合体の非水溶性
塩から成る繊維は、乾燥状態では繊維間結合力を
有するが、湿潤状態ではヒドロゲル化して繊維間
結合力を失うことを、したがつてこのものをバイ
ンダー繊維として用いることによりその目的を達
成しうることを見出し、この知見に基づいて本発
明をなすに至つた。
すなわち、本発明は、実質的に自己接着性を有
しない繊維材料100重量部に対し、アルギン酸塩
とアルギン酸アルキレングリコールエステルとの
混合体の非水溶性ヒドロゲルから成るバインダー
繊維５〜10重量部を混合し、抄造して成るヒドロ
ゲル系バインダー繊維含有シートを提供するもの
である。
本発明で用いるバインダー繊維は、水溶性アル
ギン酸塩とアルギン酸アルキレングリコールエス
テルを含有する水系ドーブを湿式紡糸して非水溶
性塩から成る繊維を形成させたのち、乾燥するこ
とによつて得ることができる。
この際用いる水溶性アルギン酸塩の例として
は、アルギン酸のナトリウム塩、カリウム塩、ア
ンモニウム塩、マグネシウム塩などがあり、これ
らは単独で用いてもよいし、また２種以上組み合
せて用いてもよい。
他方、アルギン酸アルキレングリコールエステ
ルの例としては、アルギン酸エチレングリコール
エステル、アルギン酸プロピレングリコールエス
テル、アルギン酸ブチレングリコールエステルな
どを挙げることができる。これらは例えばアルギ
ン酸とアルキレンオキシドとの反応によつて得る
ことができる。これらは単独で用いてもよいし、
また２種以上組み合わせてもよい。
水溶性アルギン酸塩とアルギン酸アルキレング
リコールエステルとの混合割合は、重量比で95：
５ないし10：90の範囲内で選ばれる。この場合、
アルギン酸アルキレングリコールエステルの割合
が多いほど得られる繊維はヒドロゲル化しやすく
なるが、あまり多くなると紡糸時の凝固速度が低
下し、作業能率が低下する原因となるので、90重
量％が最高限度である。
紡糸用のドーブは、上記の水溶性アルギン酸塩
とアルギン酸アルキレングリコールエステルとの
混合物を、２〜10重量％の範囲の濃度で水に溶解
することによつて調製される。この際、水溶性ア
ルギン酸塩とアルギン酸アルキレングリコールエ
ステルとは、それぞれ別個に所定量を秤量して水
中に加えてもよいし、またアルギン酸アルキレン
グリコールエステルの製造時にエステル化度の低
いものを形成させ、所望の割合に対応するアルギ
ン酸塩とエステルとを含むブロツクポリマー状の
物質とし、これを水中に加えてもよい。
このようにして得られるドーブは、過して不
溶物を除き、さらに脱泡して紡糸に使用される。
紡糸は、上記のドーブを例えばギヤーポンプなど
により定量的に、多数の吐出孔を備えた紡糸口金
から、凝固浴中に押し出すことによつて行われ
る。
凝固浴としては、水溶性アルギン酸塩の陽イオ
ンと交換してこれを不溶化しうる金属イオンの水
溶塩又は有機又は無機酸を含む溶液が用いられ
る。このような水溶性塩としては、例えばカルシ
ウム、バリウム、ストロンチウム、アルミニウ
ム、亜鉛、ニツケル、コバルト、クロム、銅、マ
ンガン、鉛などの金属の塩酸塩、硫酸塩、硝酸
塩、リン酸塩、有機又は無機酸としては酢酸、プ
ロピオン酸、又は塩酸、硫酸などを挙げることが
できる。これらの水溶性塩は単独で用いてもよい
し、また２種以上組み合わせて用いてもよい。
この凝固浴には、必要に応じ、繊維表面を変性
するために、親水性の有機溶剤、例えばメタノー
ル、エタノール、アセトン、酢酸エチル、ギ酸エ
チル、酢酸アミド、ギ酸アミドや各種の界面活性
剤を添加することができる。
本発明のバインダー繊維の紡糸は、上記の水素
ドーブをノズルを通して凝固液中に導入すること
により、湿式で行われる。バインダーとしての効
果から考えるとノズル径を小さくして繊度の小さ
い繊維に紡糸する方が比表面積が大きくなるので
好ましいが、あまり繊度を小さくすると繊維強度
が不十分になるので、ノズル径としては0.01〜
0.5mmの範囲が適当である。
紡糸された繊維は引取ローラに巻き取られ、抄
造に適する長さ、すなわち1.0〜20.0mm好ましく
は2.0〜10.0に裁断されたのち、必要に応じて乾
燥する。
このようにして得られたバインダー繊維は、水
の存在下ではヒドロゲル状の繊維形態を保持し、
かつ乾燥状態では繊維間結合力を有しているの
で、実質的に自己接着性を有しない繊維材料を抄
造する際のバインダー繊維として極めて適してい
る。そして、該繊維材料とこのバインダー繊維と
を混抄して得られた紙状シートは、水中において
は、該バインダー繊維が可逆的なヒドロゲル化
し、接着作用を失うため、小さなせん断力で容易
に各繊維に離解される。
本発明で用いられる実質的に自己接着性を有し
ない繊維材料としては、例えばフラツシユパル
プ、レーヨン繊維、キユプラ繊維、キチン質繊
維、コラーゲン繊維、アクリル繊維、ポリオレフ
イン繊維ポリアミド繊維、ポリエステル繊維など
各種の化学繊維、合成繊維が挙げられる。これら
は一般的には自己接着性がないため、単独で抄造
したのではシートとすることができない。
本発明のシートは、前記の実質的に自己接着性
を有しない繊維材料100重量部に対し、該バイン
ダー繊維５〜100重量部混合し、常法に従い湿式
法により抄造することによつて得られる。このバ
インダー繊維の混合割合が５重量部未満では抄造
が困難であり、また100重量部を超えると、得ら
たシートは該繊維材料が有する本来の特性が失わ
れ、かつ水中における離解の速度が著しく遅くな
り実用的でなくなる。
このようにして得られた本発明のシートは、乾
燥状態で高い強度を有するが、水中では該バイン
ダー繊維が速やかに水を吸収してヒドロゲルとな
り、同時に接着能を失うためシートは各構成繊維
に離解しやすい状態となり、水洗トイレのフラツ
シユ流程度のせん断力でも離解しうる。さらに、
該バインダー繊維は、アルギン酸塩とアルギン酸
アルキレングリコールエステルから成るものであ
るが、これらの化合物はいずれも食品添加物とし
て公認されており、人体に触れても安全であるば
かりでなく、止血作用など望ましい薬理活性を有
しているので、本発明のシートは食品包装用とし
てもなんら制限されることがない。
実施例
次に実施例により本発明をさらに詳細に説明す
る。
製造例
バインダー繊維の製造
アルギン酸ナトリウム50重量部とアルギン酸プ
ロピレングリコールエステル50重量部の混合物を
水に対して５重量％になるように混和した。次い
で、平均孔径50μのセラミツクフイルターを過
圧3.5Kg／cm2Ｇで過して不溶性異物を除去し、
紡糸用ドーブを調製した。湿式紡糸機の原料槽に
該ドーブを供給し、アスピレータを用いて一昼夜
760mmHgの負圧に減圧して脱気した。その後、原
料供給槽の圧力を1.0Kg／cm2Ｇまで加圧し、ギア
ポンプでドーブの吐出速度を16.8ml／分に調整し
て、白金ノズル（0.10mmφ×1000H）を介して５
％塩化カルシウム水溶液から成る凝固浴中に押出
したところ、ゲル状の水不溶性繊維が形成され
た。この繊維を３つ１組のゴデツト３組を通し、
その際第１ゴデツトの回転速度を20rpm、第３ゴ
デツトの回転速度を26rpmにして延伸倍率1.3倍
で微かな引張りがかかるようにしながら連続糸と
して巻き取つた。
巻き取つた連続糸は寒天状の外観を呈するため
極めて柔軟な繊維であつた。これを切断してゴデ
ツトから取りはずし、遠心脱水機で脱水後、ギロ
チンカツターで繊維長3.0mmに切断して短繊維と
し、バインダー繊維を得た。
このバインダー繊維は水に分散させると速やか
に均一に分散し、あたかも溶解したかのような状
態となつた。しかしながら、水分散液は全く粘着
性を持たず、バインダー繊維は繊維状ヒドロゲル
として分散していた。
実施例 １
繊維長5.0mmの1.5デニールの製紙用レーヨン
100重量部に対して、製造例で得られたバインダ
ー繊維30重量部を添加して、JIS P8209に準じて
レーヨン紙を製造した。抄紙用短繊維の水分散性
は極めて良好で、良好な地合のレーヨン紙が得ら
れた。製紙時の乾燥工程において該バインダー繊
維はゲル性を失い、得られたレーヨン紙は従来の
高吸収性バインダー繊維を用いた場合に見られる
ようなべとつきはなかつた。このレーヨン紙の物
性は秤量67.7ｇ／m2、厚さ0.26mm、密度0.258ｇ／
cm3、裂断長1.89Kmであつた。
添布図面はこのレーヨン紙と定量紙（密度
0.5287ｇ／cm3）のクレム吸水度を示すグラフであ
る。このグラフから明らかなようにこのレーヨン
紙は短時間の吸水性に特に優れている。
このレーヨン紙を水中に浸し、しばらく放置
後、激しくガラス棒でかきまぜると構成繊維間結
合が切断してレーヨン繊維は離解してきた。かき
まぜ続けていると、結束繊維のないレーヨン繊維
に完全に解体された。
実施例 ２〜４
実施例１におけるバインダー繊維の量を、製紙
用レーヨン繊維100重量部に対して、それぞれ10
重量部、20重量部及び90重量部とした以外は、実
施例１と同様にしてレーヨン紙を抄造した。いず
れの場合も抄紙用短繊維の水分散性は良好で、地
合の均一なレーヨン紙が得られた。得られたレー
ヨン紙の物性は次表のとおりである。
INDUSTRIAL APPLICATION FIELD The present invention relates to a sheet containing hydrogel binder fibers. More specifically, the present invention has high strength in a dry state, and is suitable for, for example, toilet paper, disposable diapers, and other disposable menstrual hygiene products, and can easily break down into constituent fibers even with a small shearing force in water. It relates to a paper-like sheet that can be disintegrated. Conventional technology When making pulp-like materials or short fibers that cannot be made into paper-like sheets by themselves because they do not have self-adhesive properties or are extremely small in size, conventionally, binders have been used as binders. Synthetic resin and synthetic rubber emulsions, hot melt adhesives, fibrous materials such as polyvinyl alcohol fibers, ethylene-vinyl acetate copolymer fibers, polyethylene fibers, polypropylene fibers, composite fibers thereof, and powdered materials are also used. ing. These binders utilize the polymer adhesive properties of synthetic rubber and synthetic resin, or are mixed with short fibers, which are the main material, to form a paper-like material.
The main type is one that heats and heat-fuses these short fibers together. Incidentally, in recent years there has been an increase in demand for toilet paper for flush toilets and sanitary products, and there has also been an increasing demand for paper-like sheet products that quickly disintegrate into fibers when placed in water after use. . However, among conventional binders, those made of synthetic rubber, synthetic resin emundion, ethylene-vinyl acetate copolymer, polyethylene, and polypropylene have interfiber binders that are stable against water.
It is very difficult to disintegrate the paper into fibers again. In addition, polyvinyl alcohol fibers only swell in water at room temperature and do not dissolve, so they will disintegrate unless special treatment is applied, such as heating, adding chemicals, or applying large shearing force with a pulper. I can't. Therefore, up until now, there have been no known paper-like sheet products based on fibrous materials that can be easily disintegrated into individual fibers with a shearing force comparable to the flush flow of a flush toilet, and that have virtually no self-adhesive properties. I wasn't there. Problems to be Solved by the Invention Under these circumstances, the object of the present invention is to use a fiber material that is mainly made of a fiber material that does not substantially have self-adhesive properties, has high strength in a dry state, and has high strength in a dry state. The object of the present invention is to provide a paper-like sheet that can be easily disintegrated into constituent fibers even with a small shearing force. Means for Solving the Problems As a result of intensive research to achieve the above object, the present inventors have found that fibers made of a water-insoluble salt of a mixture of alginic acid and alkylene glycol ester of alginic acid are produced in a dry state. It has been found that this material has interfiber bonding strength, but in a wet state it becomes a hydrogel and loses its interfiber bonding strength.Therefore, it was discovered that the purpose could be achieved by using this material as a binder fiber, and based on this knowledge, As a result, the present invention was completed. That is, in the present invention, 5 to 10 parts by weight of binder fibers made of a water-insoluble hydrogel of a mixture of alginate and alginate alkylene glycol ester are mixed with 100 parts by weight of a fibrous material that does not substantially have self-adhesive properties. The present invention provides a hydrogel-based binder fiber-containing sheet produced by paper-making. The binder fiber used in the present invention can be obtained by wet-spinning an aqueous dove containing a water-soluble alginate and an alkylene glycol ester to form a fiber made of a water-insoluble salt, and then drying the fiber. . Examples of water-soluble alginates used in this case include sodium salts, potassium salts, ammonium salts, and magnesium salts of alginic acid, which may be used alone or in combination of two or more. On the other hand, examples of alginate alkylene glycol esters include alginate ethylene glycol ester, alginate propylene glycol ester, alginate butylene glycol ester, and the like. These can be obtained, for example, by reacting alginic acid with alkylene oxide. These may be used alone or
Moreover, two or more types may be combined. The mixing ratio of water-soluble alginate and alginate alkylene glycol ester is 95:
Selected within the range of 5 to 10:90. in this case,
The higher the proportion of alginate alkylene glycol ester, the easier it is for the resulting fiber to hydrogel, but if the proportion is too large, the coagulation rate during spinning will decrease, causing a decrease in work efficiency, so 90% by weight is the highest limit. Doves for spinning are prepared by dissolving a mixture of the water-soluble alginate and alginate alkylene glycol ester described above in water at a concentration ranging from 2 to 10% by weight. At this time, the water-soluble alginate and the alginate alkylene glycol ester may be separately weighed in predetermined amounts and added to water, or they may be formed with a low degree of esterification during the production of the alginate alkylene glycol ester, A block polymer-like substance containing alginate and ester in the desired proportions may be prepared and added to water. The dove thus obtained is used for spinning after removing insoluble matter and defoaming.
Spinning is carried out by quantitatively extruding the above-mentioned dove using, for example, a gear pump through a spinneret equipped with a large number of discharge holes into a coagulation bath. As the coagulation bath, a solution containing a water-soluble salt of a metal ion or an organic or inorganic acid capable of exchanging with and insolubilizing the cations of the water-soluble alginate is used. Such water-soluble salts include, for example, hydrochlorides, sulfates, nitrates, phosphates, organic or inorganic metals such as calcium, barium, strontium, aluminum, zinc, nickel, cobalt, chromium, copper, manganese, and lead. Examples of acids include acetic acid, propionic acid, hydrochloric acid, and sulfuric acid. These water-soluble salts may be used alone or in combination of two or more. Hydrophilic organic solvents such as methanol, ethanol, acetone, ethyl acetate, ethyl formate, acetate amide, formate amide, and various surfactants are added to this coagulation bath as necessary to modify the fiber surface. can do. The spinning of the binder fiber of the present invention is carried out in a wet manner by introducing the hydrogen dope described above into the coagulating liquid through a nozzle. Considering the effect as a binder, it is preferable to reduce the nozzle diameter and spin into fibers with a small fineness because the specific surface area increases, but if the fineness is too small, the fiber strength will be insufficient, so the nozzle diameter should be 0.01 ~
A range of 0.5mm is appropriate. The spun fibers are wound around a take-up roller, cut into lengths suitable for papermaking, ie, 1.0 to 20.0 mm, preferably 2.0 to 10.0 mm, and then dried as necessary. The binder fiber thus obtained retains a hydrogel-like fiber morphology in the presence of water,
In addition, since it has interfiber bonding strength in a dry state, it is extremely suitable as a binder fiber when paper-making a fibrous material that does not substantially have self-adhesive properties. In the paper-like sheet obtained by mixing the fiber material and the binder fiber, the binder fiber turns into a reversible hydrogel in water and loses its adhesive action, so that each fiber can be easily separated by a small shearing force. It is disintegrated. Examples of the fibrous materials that are substantially non-self-adhesive to be used in the present invention include various types of fibers such as flat pulp, rayon fibers, kyupra fibers, chitin fibers, collagen fibers, acrylic fibers, polyolefin fibers, polyamide fibers, and polyester fibers. Examples include chemical fibers and synthetic fibers. Since these generally do not have self-adhesive properties, they cannot be made into a sheet if made alone. The sheet of the present invention is obtained by mixing 5 to 100 parts by weight of the binder fiber with 100 parts by weight of the above-mentioned substantially non-self-adhesive fiber material, and forming the sheet by a wet method according to a conventional method. . If the blending ratio of the binder fibers is less than 5 parts by weight, paper making will be difficult, and if it exceeds 100 parts by weight, the resulting sheet will lose its original properties and the speed of disintegration in water will be reduced. It becomes extremely slow and impractical. The sheet of the present invention obtained in this way has high strength in a dry state, but in water, the binder fibers quickly absorb water and become a hydrogel, and at the same time lose adhesive ability, so the sheet does not adhere to each constituent fiber. It is in a state where it is easy to disintegrate, and it can be disintegrated even with a shearing force equivalent to the flush flow of a flush toilet. moreover,
The binder fibers are made of alginate and alginate alkylene glycol ester, and both of these compounds are officially approved as food additives, and are not only safe even when they come into contact with the human body, but also have desirable hemostatic effects. Since it has pharmacological activity, the sheet of the present invention is not limited in any way to its use in food packaging. Examples Next, the present invention will be explained in more detail with reference to Examples. Production Example Production of Binder Fiber A mixture of 50 parts by weight of sodium alginate and 50 parts by weight of propylene glycol alginate was mixed with water at a concentration of 5% by weight. Next, insoluble foreign substances were removed by passing through a ceramic filter with an average pore size of 50μ at an overpressure of 3.5Kg/cm 2 G.
A spinning dove was prepared. The dove is supplied to the raw material tank of a wet spinning machine, and is kept overnight using an aspirator.
The pressure was reduced to 760 mmHg and degassed. After that, the pressure of the raw material supply tank was increased to 1.0 Kg/cm 2 G, the discharge speed of the dove was adjusted to 16.8 ml/min with a gear pump, and 5.
When extruded into a coagulation bath consisting of an aqueous solution of % calcium chloride, gel-like water-insoluble fibers were formed. Pass this fiber through 3 sets of 3 godets,
At this time, the rotational speed of the first godet was set to 20 rpm, and the rotational speed of the third godet was set to 26 rpm, and the yarn was wound as a continuous yarn while applying slight tension at a draw ratio of 1.3 times. The continuous yarn wound up had an agar-like appearance and was an extremely flexible fiber. This was cut and removed from the godet, dehydrated using a centrifugal dehydrator, and then cut into short fibers with a fiber length of 3.0 mm using a guillotine cutter to obtain binder fibers. When this binder fiber was dispersed in water, it was quickly and uniformly dispersed, and the binder fiber appeared to be in a state as if it had been dissolved. However, the aqueous dispersion had no tackiness and the binder fibers were dispersed as a fibrous hydrogel. Example 1 1.5 denier papermaking rayon with fiber length 5.0 mm
Rayon paper was produced according to JIS P8209 by adding 30 parts by weight of the binder fiber obtained in the production example to 100 parts by weight. The water dispersibility of the short fibers for paper making was extremely good, and rayon paper with good formation was obtained. During the drying process during paper manufacturing, the binder fibers lost their gel properties, and the resulting rayon paper did not have the stickiness that is seen when conventional superabsorbent binder fibers are used. The physical properties of this rayon paper are: weight 67.7g/m 2 , thickness 0.26mm, density 0.258g/m 2
cm 3 , and the fracture length was 1.89 km. The attached drawing shows this rayon paper and quantitative paper (density
0.5287g/cm 3 ) is a graph showing Krem water absorption. As is clear from this graph, this rayon paper is particularly excellent in short-term water absorption. When this rayon paper was soaked in water, left for a while, and then stirred vigorously with a glass rod, the bonds between the constituent fibers were broken and the rayon fibers disintegrated. As the stirring continued, the rayon fibers were completely broken down into rayon fibers without binding fibers. Examples 2 to 4 The amount of binder fiber in Example 1 was adjusted to 10 parts by weight for each 100 parts by weight of papermaking rayon fiber.
Rayon paper was made in the same manner as in Example 1 except that the parts by weight were changed to 20 parts by weight and 90 parts by weight. In all cases, the short fibers for papermaking had good water dispersibility, and rayon paper with a uniform texture was obtained. The physical properties of the obtained rayon paper are shown in the table below.
【表】【table】
【表】
ない。
各レーヨン紙を水中に侵した場合、バインダー
繊維量が多い程、離解の速度は遅かつたが、いず
れも激しくガラス棒でかきまぜる程度で繊維の結
束がなくなつた。
発明の効果
本発明のヒドロゲル系バインダー繊維含有シー
トは、乾燥状態では高い強度を有し、かつ水中に
おいては、水洗トイレのフラツシユ流程度の小さ
なせん断力でも各構成繊維に容易に離解しうるの
で、例えばトイレツトペーパー、紙おむつその他
デイスポーザブルは生理衛生製品などに好適に用
いられる。[Table] None.
When each type of rayon paper was immersed in water, the rate of disintegration was slower as the amount of binder fibers increased, but in all cases, the fibers became loose even by stirring vigorously with a glass rod. Effects of the Invention The hydrogel-based binder fiber-containing sheet of the present invention has high strength in a dry state, and can be easily disintegrated into constituent fibers in water even with a small shear force equivalent to the flush flow of a flush toilet. For example, toilet paper, disposable diapers, and other disposables are suitably used as sanitary hygiene products.
図面は本発明のヒドロゲル系バインダー繊維含
有レーヨン紙と定量紙のクレム吸水度を示すグ
ラフである。
The drawing is a graph showing the Klemm's water absorption of rayon paper containing hydrogel binder fibers of the present invention and quantitative paper.
Claims (1)
重量部に対し、アルギン酸塩とアルギン酸アルキ
レングリコールエステルとの混合体の非水溶性ヒ
ドロゲルから成るバインダー繊維５〜100重量部
を混合し、抄造して成るヒドロゲル系バインダー
繊維含有シート。1 Fiber material 100 that does not have substantially self-adhesive properties
A sheet containing hydrogel-based binder fibers is prepared by mixing 5 to 100 parts by weight of binder fibers made of a water-insoluble hydrogel of a mixture of alginate and alginate alkylene glycol ester, and forming a sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4343286A JPS62141199A (en) | 1986-02-27 | 1986-02-27 | Sheet containing hydrogel binder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4343286A JPS62141199A (en) | 1986-02-27 | 1986-02-27 | Sheet containing hydrogel binder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62141199A JPS62141199A (en) | 1987-06-24 |
| JPH0160120B2 true JPH0160120B2 (en) | 1989-12-21 |
Family
ID=12663535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4343286A Granted JPS62141199A (en) | 1986-02-27 | 1986-02-27 | Sheet containing hydrogel binder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62141199A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4002083A1 (en) * | 1990-01-25 | 1991-08-01 | Hoechst Ag | AREA OR TUBULAR FILM BASED ON CELLULOSEHYDRATE |
| DE4005794C2 (en) * | 1990-02-23 | 2003-03-27 | Hoechst Ag | Wet-strength paper based on hemp fibers and its use |
-
1986
- 1986-02-27 JP JP4343286A patent/JPS62141199A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62141199A (en) | 1987-06-24 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |