JP3449764B2 - Water soluble net - Google Patents
Water soluble netInfo
- Publication number
- JP3449764B2 JP3449764B2 JP30152993A JP30152993A JP3449764B2 JP 3449764 B2 JP3449764 B2 JP 3449764B2 JP 30152993 A JP30152993 A JP 30152993A JP 30152993 A JP30152993 A JP 30152993A JP 3449764 B2 JP3449764 B2 JP 3449764B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- net
- soluble
- paper
- polyvinyl alcohol
- 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 - Lifetime
Links
Landscapes
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Nonwoven Fabrics (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、不要になった場合に
は溶解除去可能な補強材として特に有用な水溶性ネット
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-soluble net which is particularly useful as a reinforcing material which can be dissolved and removed when it is no longer needed.
【０００２】[0002]
【従来の技術】従来から、水不溶性の合成繊維糸(例え
ば、ポリエステル、ポリエチレンおよびナイロン等の繊
維糸)を紙と紙の間に挿入接合して成る補強紙が紙タオ
ルや包装用紙等として利用されているが、使用済のこの
種の補強紙は、資源の節約活用および環境保全等の観点
からは、再生紙として再利用することが要請されてい
る。しかしながら、従来の補強紙を再生紙化する場合に
は、紙の単繊維と補強糸の長繊維を効果的に分離するこ
とが困難なため、再生紙に合成繊維が混入し、低品質の
再生紙しか得られないという問題がある。2. Description of the Related Art Conventionally, a reinforcing paper formed by inserting and joining water-insoluble synthetic fiber threads (for example, fiber threads of polyester, polyethylene, nylon, etc.) between papers has been used as paper towels, wrapping papers, etc. However, this kind of used reinforcing paper is required to be reused as recycled paper from the viewpoint of resource saving and environmental protection. However, when converting conventional reinforcing paper into recycled paper, it is difficult to effectively separate the single fibers of the paper from the long fibers of the reinforcing yarn, so synthetic fibers are mixed into the recycled paper, and low quality recycled paper is used. There is a problem that you can only get paper.
【０００３】[0003]
【発明が解決しようとする課題】この発明は上記問題を
解決し、使用済の補強紙からの補強材の効果的な除去と
高品質再生紙の製造を可能にするためになされたもので
ある。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and to enable effective removal of a reinforcing material from used reinforcing paper and production of high quality recycled paper. .
【０００４】[0004]
【課題を解決するための手段】即ちこの発明は、水溶性
ポリビニルアルコール系繊維糸を、ケン化度７８〜８
９．５モル％および重合度３００〜１７００のポリビニ
ルアルコール並びにケン化度９７モル％以上および重合
度３００〜１７００のポリビニルアルコールの混合物か
ら成る水溶性ポリビニルアルコール系接着剤で網状に接
合して成る水溶性ネットに関する。That is, the present invention provides a water-soluble polyvinyl alcohol fiber yarn with a saponification degree of 78-8.
Polyvinyl chloride with 9.5 mol% and degree of polymerization 300-1700
Ru alcohol and saponification degree of more than 97 mol% and polymerization
Is it a mixture of polyvinyl alcohol of 300 to 1700 degrees?
The present invention relates to a water-soluble net formed by joining a water-soluble polyvinyl alcohol adhesive to form a net.
【０００５】本発明において用いる水溶性ポリビニルア
ルコール系繊維糸として特に好適なものは、ケン化度９
４モル％以上、特に９９モル％以上、就中９９．９５モ
ル％以上および重合度１０００〜３０００、特に１１０
０〜１７００のポリビニルアルコールを紡糸し、これを
延伸熱処理に付すことによって製造される溶解点６０〜
９５℃、特に７０〜９０℃、就中８０〜８５℃の水溶性
ポリビニルアルコール系繊維糸である。ここで、溶解点
とは、温水中に無緊張状態で吊した繊維が２０〜３０秒
間で溶断するときの該温水の温度をいう。また、紡糸方
法は湿式法、半溶融式法または乾式法等いずれであって
もよい。この種のポリビニルアルコール系繊維糸は、最
終的には水に溶解するが、本発明による水溶性ネットお
よび補強紙の製造工程においては、その形態を実質上保
持する。ケン化度が低過ぎると、水に過度に溶解しやす
くなって水溶性ネットの製造が困難となる。また、重合
度が低過ぎると糸強度が低下し、高過ぎると紡糸が困難
となる。さらに、溶解点が低過ぎると水溶性ネットの製
造工程中に接着剤等に溶解しやすくなって該ネットの製
造が困難となり、高過ぎると補強紙の再生紙化工程にお
いて、熱水中への溶解が困難となり、所期の目的が達成
し難くなる。The water-soluble polyvinyl alcohol fiber yarn used in the present invention is particularly suitable as a saponification degree of 9
4 mol% or more, particularly 99 mol% or more, especially 99.95 mol% or more, and a polymerization degree of 1000 to 3000, especially 110
A melt point of 60 to 1700 produced by spinning 0 to 1700 polyvinyl alcohol and subjecting it to stretching heat treatment.
It is a water-soluble polyvinyl alcohol fiber yarn at 95 ° C, particularly 70 to 90 ° C, especially 80 to 85 ° C. Here, the melting point refers to the temperature of the hot water when the fibers hung in warm water in a tension-free state melt for 20 to 30 seconds. The spinning method may be any of a wet method, a semi-melting method, a dry method and the like. Although this type of polyvinyl alcohol fiber yarn finally dissolves in water, it substantially retains its form in the process of producing the water-soluble net and the reinforcing paper according to the present invention. If the degree of saponification is too low, it will be excessively soluble in water, making it difficult to produce a water-soluble net. If the degree of polymerization is too low, the yarn strength will decrease, and if it is too high, spinning will be difficult. Further, if the melting point is too low, it easily dissolves in an adhesive or the like during the manufacturing process of the water-soluble net, which makes it difficult to manufacture the net. Dissolution becomes difficult and it becomes difficult to achieve the intended purpose.
【０００６】ネット製造時の接着性および該ネットと紙
との接着性の観点から、本発明において用いる水溶性ポ
リビニルアルコール系接着剤として特に好適なものは、
高ケン化度のものと比較的ケン化度の低いものを適宜混
合した接着剤、例えば、ケン化度９７モル％以上、特に
９８〜９９モル％および重合度３００〜１７００、特に
３００〜１５００、就中３００〜５００のポリビニルア
ルコールとケン化度７８〜８９．５モル％、特に８６．
５〜８９．５モル％、就中８７〜８９モル％および重合
度３００〜１７００、特に３００〜１５００、就中３０
０〜５００のポリビニルアルコールとの混合物である。
この場合、前者と後者の混合比は通常、３:２〜２:３で
あり、前者が多過ぎると、ネットと紙との接着力が低下
し、後者が多過ぎると、ネット製造時の接着性が低下す
る。また、上記混合接着剤において、前者のケン化度が
低過ぎると、ネットを構成する前記繊維糸間の接着力が
著しく低下し、後者のケン化度が低過ぎると水に対する
溶解性が悪くなり、均一で十分な濃度の接着剤溶液の調
製が困難となる。なお、両者の重合度が高過ぎると、粘
度が高くなり、ネットの製造が困難となり、逆に低過ぎ
ると十分な接着力が得られない。From the viewpoint of adhesiveness during net production and adhesiveness between the net and paper, the water-soluble polyvinyl alcohol-based adhesive used in the present invention is particularly preferably:
An adhesive in which a high saponification degree and a relatively low saponification degree are appropriately mixed, for example, a saponification degree of 97 mol% or more, particularly 98 to 99 mol% and a polymerization degree of 300 to 1700, particularly 300 to 1500, Especially, the polyvinyl alcohol of 300 to 500 and the saponification degree of 78 to 89.5 mol%, especially 86.
5-89.5 mol%, especially 87-89 mol% and degree of polymerization 300-1700, especially 300-1500, especially 30
It is a mixture with 0 to 500 polyvinyl alcohol.
In this case, the mixing ratio of the former and the latter is usually 3: 2 to 2: 3, and if the former is too much, the adhesive force between the net and the paper is reduced, and if the latter is too large, the adhesion during the net manufacturing. Sex decreases. Further, in the above mixed adhesive, if the saponification degree of the former is too low, the adhesive force between the fiber yarns constituting the net is significantly reduced, and if the saponification degree of the latter is too low, the solubility in water becomes poor. However, it becomes difficult to prepare an adhesive solution having a uniform and sufficient concentration. If the degree of polymerization of both is too high, the viscosity becomes high, making it difficult to manufacture the net. Conversely, if it is too low, sufficient adhesive force cannot be obtained.
【０００７】本発明による水溶性ネットの製造法は特に
限定的ではないが、一般的には、前記の水溶性ポリビニ
ルアルコール系繊維糸をほぼ平行に適当な間隔(通常は
０.５〜４本／cm)で配列した緯糸群を上記接着剤水溶液
中へ誘導して浸漬した後、押えロールへ導き、一方、前
記の水溶性ポリビニルアルコール系繊維糸をほぼ平行に
適当な間隔(通常は０.５〜８本／cm)で配列した経糸群
を該押えロールへ誘導して接着剤含浸緯糸群の片面また
は両面に網状に積層させ、得られたネットを加熱シリン
ダーに導いて乾燥させた後、巻取ロールへ誘導する。こ
の場合、接着剤の濃度は通常１５〜３０重量％であり、
また、乾燥温度は通常８５〜１００℃である。このよう
な製造条件下では、ポリビニルアルコール系繊維糸はそ
の形態を著しく損なうことはなく、紙の補強をするため
に十分な引張り強力を保持し、また、ポリビニル系接着
剤はポリビニルアルコール系繊維糸の著しい形態変化を
もたらすことなく該繊維糸を接合させると共に、熱圧着
によって紙と接着するのに十分な潜在的接着力を保有す
る。The method for producing the water-soluble net according to the present invention is not particularly limited, but in general, the above-mentioned water-soluble polyvinyl alcohol fiber yarns are generally parallel to each other at appropriate intervals (usually 0.5 to 4). / Cm) weft groups are guided into the aqueous adhesive solution and dipped in the solution, and then guided to a press roll, while the water-soluble polyvinyl alcohol fiber yarns are approximately parallel to each other at appropriate intervals (usually 0. 5-8 yarns / cm) are arranged on one side or both sides of the adhesive-impregnated weft yarn group by guiding the warp yarn group to the pressing roll, and the obtained net is introduced into a heating cylinder and dried, Guide to the take-up roll. In this case, the concentration of the adhesive is usually 15 to 30% by weight,
The drying temperature is usually 85 to 100 ° C. Under such manufacturing conditions, the polyvinyl alcohol fiber yarn does not significantly impair its shape and retains sufficient tensile strength to reinforce the paper, and the polyvinyl adhesive is a polyvinyl alcohol fiber yarn. The fiber yarn is bonded without causing a significant change in the shape of the fiber and has sufficient potential adhesive force to bond with the paper by thermocompression bonding.
【０００８】上記のようにして得られる水溶性ネットの
片面または両面に紙を熱圧着によって貼付することによ
って、本発明による補強紙を製造することができる。熱
圧着条件は通常、１２０〜１７０℃で、０.２〜０.６kg
／cm2である。該補強紙は、補強ネットが熱水で溶解す
るために、使用後は、再生紙用原料として有効に再利用
できる。The reinforcing paper according to the present invention can be manufactured by pasting paper on one or both sides of the water-soluble net obtained as described above by thermocompression bonding. The thermocompression bonding conditions are usually 120 to 170 ° C and 0.2 to 0.6 kg.
/ Cm 2 . Since the reinforcing net dissolves in hot water, the reinforcing paper can be effectively reused as a raw material for recycled paper after use.
【０００９】[0009]
【実施例】以下、本発明を実施例によって説明する。実施例１
ポリビニルアルコール(重合度: １１５０、ケン化度:
９９．９５モル％)を紡糸して得られた市販の繊維糸(株
式会社ニチビ製; 溶解点: ８３．５℃、引張強度: ３．
０g／d、繊度: ２５０d／６０f)を経糸としてクリール
スタンドから上下２層に引出し、各層とも０．５本／cm
の状態で配列した後、押えロールに導いた。一方、上記
の繊維糸を緯糸として回転アームを通して緯糸支持部材
に巻き付け、該支持部材の回転によって緯糸を１本／cm
の状態で配列した後、接着剤付与ロールと接触させ、次
いで上記の押えロールに導いた。接着剤付与ロールに
は、ポリビニルアルコール「ＰＶＡ４０３」(株式会社ク
ラレ製; ケン化度: ８７〜８９モル％、重合度: ３０
０)と「ＰＶＡ１０５」(株式会社クラレ製; ケン化度: ９
８〜９９モル％、重合度: ５００)とを６:４の割合で混
合した接着剤を供給した。上記の押えロールにおいて経
糸と緯糸を合体させて得られた水溶性ネットは、９０
℃、１００℃および８５℃に加熱したシリンダーと順次
接触させて乾燥させた後、巻取ロールに巻取った。EXAMPLES The present invention will be described below with reference to examples. Example 1 Polyvinyl alcohol (degree of polymerization: 1150, degree of saponification:
99.95 mol%) of commercially available fiber yarn (manufactured by Nichibi Co., Ltd .; melting point: 83.5 ° C., tensile strength: 3.
0 g / d, fineness: 250 d / 60 f) is drawn out from the creel stand into two layers, 0.5 layer / cm for each layer.
After arranging in the state of, it was led to the press roll. On the other hand, the above fiber yarn is wound around a weft supporting member as a weft through a rotating arm, and the weft is rotated by 1 / cm by rotating the supporting member.
After arranging in this state, it was brought into contact with the adhesive-applied roll and then led to the above-mentioned pressing roll. Polyvinyl alcohol “PVA403” (manufactured by Kuraray Co., Ltd .; saponification degree: 87 to 89 mol%, polymerization degree: 30)
0) and "PVA105" (Kuraray Co., Ltd .; degree of saponification: 9
An adhesive was prepared by mixing 8 to 99 mol% and a polymerization degree of 500) in a ratio of 6: 4. The water-soluble net obtained by combining the warp yarn and the weft yarn in the above press roll is 90
After being brought into contact with a cylinder heated to ℃, 100 ℃ and 85 ℃ in order and dried, it was wound on a winding roll.
【００１０】実施例２
実施例１で得られた水溶性ネットの表裏面に普通紙を重
ねた後、１５０℃で０．３kg／cm2の条件下での熱圧着
処理に付すことによって補強紙を調製した。 Example 2 A plain paper was placed on the front and back surfaces of the water-soluble net obtained in Example 1 and then subjected to thermocompression bonding at 150 ° C. under a condition of 0.3 kg / cm 2 to form a reinforcing paper. Was prepared.
【００１１】実施例３
経糸および緯糸として、ポリビニルアルコール(重合度:
１７００、ケン化度:９９．５モル％)を紡糸して得ら
れた市販の繊維糸(株式会社ニチビ製; 溶解点：８５
℃、引張強度： ３．５g／d、繊度: ２５０d／６０f)
を使用し、また。経糸間隔と緯糸間隔をそれぞれ１本／
cmおよび０.５本／cmとする以外は実施例１と同様にし
て水溶性ネットを調製した。 Example 3 As warp and weft, polyvinyl alcohol (degree of polymerization:
Commercially available fiber yarn (manufactured by Nichibi Co., Ltd .; melting point: 85) obtained by spinning 1700, saponification degree: 99.5 mol%)
℃, tensile strength: 3.5g / d, fineness: 250d / 60f)
Also used. 1 warp space and 1 weft space
A water-soluble net was prepared in the same manner as in Example 1 except that the number was cm and 0.5 / cm.
【００１２】実施例４
実施例３で得られた水溶性ネットを使用する以外は実施
例２と同様にして補強紙を調製した。 Example 4 A reinforcing paper was prepared in the same manner as in Example 2 except that the water-soluble net obtained in Example 3 was used.
【００１３】比較例１
経糸および緯糸として市販のポリエステル繊維糸(帝人
株式会社製)を使用する以外は実施例１と同様にしてネ
ットを調製した。 Comparative Example 1 A net was prepared in the same manner as in Example 1 except that commercially available polyester fiber yarn (manufactured by Teijin Ltd.) was used as the warp and the weft.
【００１４】比較例２
比較例１で得られたネットを使用する以外は実施例２と
同様にして補強紙を調製した。 Comparative Example 2 A reinforcing paper was prepared in the same manner as in Example 2 except that the net obtained in Comparative Example 1 was used.
【００１５】実施例２および４並びに比較例２において
調製した補強紙を１cm×１cmの大きさに切断し、それぞ
れ約２５枚の切断片を８５℃の熱水の入った別々のビー
カー内に投入して５分間撹拌したところ、実施例２およ
び４で調製した補強紙の場合には、繊維糸は全く認めら
れなかったが、比較例２で調製した補強紙の場合には繊
維糸が残存した。The reinforcing papers prepared in Examples 2 and 4 and Comparative Example 2 were cut into a size of 1 cm × 1 cm, and about 25 cut pieces were placed in separate beakers containing hot water at 85 ° C. After stirring for 5 minutes, no fiber thread was observed in the case of the reinforced papers prepared in Examples 2 and 4, but fiber threads remained in the case of the reinforced paper prepared in Comparative Example 2. .
【００１６】[0016]
【発明の効果】水溶性の繊維糸と接着剤から構成される
本発明による水溶性ネットは特に紙の補強用ネットとし
て有用なものであって、原料繊維糸の形態を実質上損な
うことなく製造できるだけでなく、付加的な接着剤を使
用することなく紙に付着させてこれを補強することがで
きる。本発明による水溶性ネットは紙タオル、紙ナプキ
ン、植生用紙、包装用紙、紙封筒および紙製カバー等の
補強材として特に有効である。本発明による水溶性ネッ
トで補強した紙は、該ネットが熱水で溶解するために、
使用後は、再生紙用原料として有効に再利用できる。INDUSTRIAL APPLICABILITY The water-soluble net according to the present invention composed of a water-soluble fiber yarn and an adhesive is particularly useful as a reinforcing net for paper, and is manufactured without substantially impairing the morphology of the raw fiber yarn. Not only can it be attached to the paper to reinforce it without the use of additional adhesives. The water-soluble net according to the present invention is particularly effective as a reinforcing material for paper towels, paper napkins, vegetation paper, wrapping paper, paper envelopes, paper covers and the like. The paper reinforced with the water-soluble net according to the present invention has the advantage that the net dissolves in hot water,
After use, it can be effectively reused as a raw material for recycled paper.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｄ０４Ｈ 3/12 Ｄ０４Ｈ 3/12 (56)参考文献 特開 昭51−75181（ＪＰ，Ａ) 特開 昭60−162850（ＪＰ，Ａ) 特開 昭58−98464（ＪＰ，Ａ) 特開 昭60−119251（ＪＰ，Ａ) 特公 昭50−15902（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) D04H 1/00 - 18/00 D21H 11/00 - 27/42 B32B 1/00 - 35/00 C09J 1/00 - 201/10 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification symbol FI D04H 3/12 D04H 3/12 (56) References JP-A-51-75181 (JP, A) JP-A-60-162850 (JP , A) JP 58-98464 (JP, A) JP 60-119251 (JP, A) JP 50-15902 (JP, B1) (58) Fields investigated (Int.Cl. 7 , DB) Name) D04H 1/00-18/00 D21H 11/00-27/42 B32B 1/00-35/00 C09J 1/00-201/10
Claims (3)
を、ケン化度７８〜８９．５モル％および重合度３００
〜１７００のポリビニルアルコール並びにケン化度９７
モル％以上および重合度３００〜１７００のポリビニル
アルコールの混合物から成る水溶性ポリビニルアルコー
ル系接着剤で網状に接合して成る水溶性ネット。1. A water-soluble polyvinyl alcohol fiber yarn having a saponification degree of 78 to 89.5 mol% and a polymerization degree of 300.
˜1700 polyvinyl alcohol and saponification degree 97
Polyvinyl with a mol% or more and a degree of polymerization of 300 to 1700
A water-soluble net made of a water-soluble polyvinyl alcohol-based adhesive composed of a mixture of alcohols and joined in a net shape.
が、ケン化度９４モル％以上、重合度１０００〜３００
０および溶解点６０〜９０℃のポリビニルアルコール系
繊維糸である請求項１記載の水溶性ネット。2. The water-soluble polyvinyl alcohol fiber yarn has a saponification degree of 94 mol% or more and a polymerization degree of 1000 to 300.
The water-soluble net according to claim 1, which is a polyvinyl alcohol fiber yarn having a melting point of 0 and a melting point of 60 to 90 ° C.
片面または両面に紙を貼付して成る補強紙。3. Reinforcement paper obtained by attaching paper to one or both sides of the water-soluble net according to claim 1 or 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30152993A JP3449764B2 (en) | 1993-12-01 | 1993-12-01 | Water soluble net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30152993A JP3449764B2 (en) | 1993-12-01 | 1993-12-01 | Water soluble net |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07150457A JPH07150457A (en) | 1995-06-13 |
| JP3449764B2 true JP3449764B2 (en) | 2003-09-22 |
Family
ID=17898035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30152993A Expired - Lifetime JP3449764B2 (en) | 1993-12-01 | 1993-12-01 | Water soluble net |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3449764B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5924283B2 (en) * | 2013-02-08 | 2016-05-25 | 大王加工紙工業株式会社 | Threaded paper sheet |
| FR3122439B1 (en) * | 2021-04-30 | 2023-05-19 | Porcher Ind | Recyclable textile grid and papermaker composite incorporating it |
-
1993
- 1993-12-01 JP JP30152993A patent/JP3449764B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07150457A (en) | 1995-06-13 |
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