JP2004218151A - Method for applying chemical liquid to fiber web and liquid application apparatus therefor - Google Patents

Method for applying chemical liquid to fiber web and liquid application apparatus therefor Download PDF

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JP2004218151A
JP2004218151A JP2003007842A JP2003007842A JP2004218151A JP 2004218151 A JP2004218151 A JP 2004218151A JP 2003007842 A JP2003007842 A JP 2003007842A JP 2003007842 A JP2003007842 A JP 2003007842A JP 2004218151 A JP2004218151 A JP 2004218151A
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fiber web
roll
chemical liquid
chemical
chemical solution
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JP3716254B2 (en
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Tamotsu Dobashi
保 土橋
Tomoaki Sano
智明 佐野
Makoto Shinoda
誠 信太
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Daio Paper Corp
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Daio Paper Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To uniformly apply a chemical liquid to a fiber web delivered from a web roll in a production process and quickly impregnate the liquid into the fiber web. <P>SOLUTION: The chemical liquid application apparatus for converting a fiber web delivered from a web roll 2 into a final product is provided with a 1st liquid applicator F<SB>1</SB>having a chemical applying roll 6 and a fiber web pressing roll 7 placed opposite to each other at different sides and a 2nd liquid applicator F<SB>2</SB>. The chemical liquid is applied to one side of the fiber web with the liquid application roll 6 of the 1st liquid applicator F<SB>1</SB>, the fiber web is impregnated with the liquid by pressing the web by the web pressing roll 7, the liquid is applied to the other face of the fiber web with the liquid applying roll 6 of the 2nd liquid applicator F<SB>2</SB>and the web is impregnated with the liquid by pressing the web by the web pressing roll 7. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、原反ロールから繰り出された繊維ウエブが製品化される工程における繊維ウエブへの薬液塗布方法および薬液塗布装置に関する。
【０００２】
【従来の技術】
ティッシュペーパーやトイレットペーパー等の家庭用薄葉紙に代表されるような繊維ウエブよりなる製品においては、吸湿性や柔軟性を付与するためにローション薬液等の薬液が塗布されたものが知られている。この繊維ウエブに薬液を塗布する方法としては、例えば繊維ウエブに薬液をスプレーしたり、繊維ウエブを薬液に浸漬したり、塗工ロールによって薬液を塗布したりする方法が採用されている。後者の塗工ロールによる方法としては、例えば下記特許文献１に示されるように、グラビア版ロールおよびオフセット塗工ロール（転写ロール）からなる塗布装置を繊維ウエブを挟んで対峙させた状態で配置した、所謂グラビア転写方式のローション薬液塗布装置により、繊維ウエブの両面にそれぞれ同時的にローション薬液を塗布する方法が記載されている。
【０００３】
また、下記特許文献２では、薬液を繊維ウエブに含浸させるに当たり、加工装置上で、ウエブに薬液をスプレーしたり、薬液中に浸漬したり、印刷機によるウエブに印刷する等の方法により含浸させ得ること、すなわちオンライン上で薬液の含浸を行い得ることが記載されている。
【０００４】
【特許文献１】
特表平１０−５０１８５３号公報
【特許文献２】
特開平５−１５６５９６号公報
【０００５】
【発明が解決しようとする課題】
しかしながら、上記特許文献１に示される方法は、原反ロールから繰り出された繊維ウエブに薬液を塗布したならば、再びロール状に巻き取るもので、所謂オフラインでの工程となる。従って、製品化ラインとは別の処理となるため、処理が煩雑であるとともに、製品化までに長時間を要する等、製品化までのコストが嵩むなどの問題があった。また、グラビア転写方式の場合は、塗布量を多くすると、転写ロール上でムラや波紋が生じ、塗布ムラが発生する。特に、７０ｍ／分以上の高速塗布になると、バウンシングが発生し、縞状のムラになるなどの問題があった。
【０００６】
一方、上記特許文献２に示される方法では、製品化工程（オンライン）において薬液の塗布を行い得ることが記載されているけれども、実際にオンライン上で薬液の塗布を行う場合には、塗布直後に、切断工程、折り工程等を経て製品化されることになるが、薬液が十分に繊維ウエブに含浸されず、薬液の塗布度合いにムラが生じる、或いはしっとり感の立ち上がりが遅いなどの問題があった。
【０００７】
そこで、本発明の主たる課題は、原反ロールから繰り出される繊維ウエブの製品化過程において、高速下であって均一に薬液を塗布することができるとともに、繊維ウエブに薬液を迅速に含浸させ、しっとり感を早期に立ち上げできる繊維ウエブへの薬液塗布方法および薬液塗布装置を提供することにある。
【０００８】
【課題を解決するための手段】
前記課題を解決するための請求項１に係る発明として、原反ロールから繰り出された繊維ウエブが製品化されるライン工程において、
前記ライン中に、繊維ウエブの一方面側に配置される薬液塗工ロールと、この薬液塗工ロールに対面させた状態で繊維ウエブの他方面側に配置される繊維ウエブ押圧ロールとからなる第１の薬液塗布装置と、
繊維ウエブの他方面側に配置される薬液塗工ロールと、この薬液塗工ロールに対面させた状態で繊維ウエブの一方面側に配置される繊維ウエブ押圧ロールとからなる第２の薬液塗布装置とを備え、
前記第１の薬液塗布装置において、前記薬液塗工ロールにより繊維ウエブの一方面側に薬液を塗布すると同時に、前記繊維ウエブ押圧ロールによる加圧により前記薬液を繊維ウエブ中に含浸させ、
次いで、前記第２の薬液塗布装置において、前記薬液塗工ロールにより前記繊維ウエブの他方面側に薬液を塗布すると同時に、前記繊維ウエブ押圧ロールによる加圧により前記薬液を繊維ウエブ中に含浸させることを特徴とする繊維ウエブへの薬液塗布方法が提供される。
【０００９】
請求項２に係る発明として、原反ロールから繰り出された繊維ウエブが製品化されるライン工程において、
前記ライン中に、繊維ウエブの一方面側に配置される薬液塗工ロールと、この薬液塗工ロールの出側位置に配設されるとともに、繊維ウエブを跨いで対面状態で設けられた一対の繊維ウエブ押圧ロールとからなる第１の薬液塗布装置と、
繊維ウエブの他方面側に配置される薬液塗工ロールと、この薬液塗工ロールの出側位置に配設されるとともに、繊維ウエブを跨いで対面状態で設けられた一対の繊維ウエブ押圧ロールとからなる第２の薬液塗布装置とを備え、
前記第１の薬液塗布装置において、前記薬液塗工ロールにより繊維ウエブの一方面側に薬液を塗布した後、前記一対の繊維ウエブ押圧ロールによる加圧により前記薬液を繊維ウエブ中に含浸させ、
次いで、前記第２の薬液塗布装置において、前記薬液塗工ロールにより前記繊維ウエブの他方面側に薬液を塗布した後、前記繊維ウエブ押圧ロールによる加圧により前記薬液を繊維ウエブ中に含浸させることを特徴とする繊維ウエブへの薬液塗布方法が提供される。
【００１０】
上記請求項１および２記載の発明によれば、原反ロールから繰り出される繊維ウエブの製品化工程において、前記繊維ウエブに対して薬液塗工ロールにより薬液を塗布すると同時に、或いは塗布直後に繊維ウエブを押圧ロールによって加圧し薬液を繊維ウエブ中に含浸させるようにした。従って、その直後の製品化に際し、繊維ウエブに薬液が迅速に含浸し、早期にしっとり感が立ち上がるようになり、品質が低下することもない。また、本発明では、繊維ウエブの表裏面で塗布工程を分けるとともに、前記押圧ロールの加圧力を調整することにより、薬液の浸透性やニップ圧が制御可能となるため、高速下であっても均一に薬液を塗布することができるようになる。
【００１１】
請求項３に係る発明として、前記繊維ウエブはティッシュペーパー、トイレットペーパー等の家庭用薄葉紙であり、前記原反ロールは２組備えられ、各繊維ウエブ毎に、前記第１の薬液塗布装置および第２の薬液塗布装置を備える請求項１、２いずれかに記載の繊維ウエブへの薬液塗布方法が提供される。
【００１２】
請求項４に係る発明として、前記繊維ウエブは、クレープ率１５〜２５％である請求項１〜３いずれかに記載の繊維ウエブへの薬液塗布方法が提供される。
【００１３】
請求項５に係る発明として、前記薬液は粘度１〜５００ｃｐｓのローション薬液である請求項１〜４いずれかに記載の繊維ウエブへの薬液塗布方法が提供される。
【００１４】
請求項６に係る発明として、前記ローション薬液の塗布量は、繊維ウエブの両面で２〜２０ｇ／ｍ２とした請求項１〜５いずれかに記載の繊維ウエブへの薬液塗布方法が提供される。
【００１５】
請求項７に係る発明として、前記塗工ロールはグラビア版であるとともに、前記繊維ウエブ押圧ロールはゴム圧胴である請求項１〜６いずれかに記載の繊維ウエブへの薬液塗布方法が提供される。
【００１６】
請求項８に係る発明として、前記グラビア版のグラビア線数は１インチあたり１００〜３００線の割合で設けられている請求項７記載の繊維ウエブへの薬液塗布方法が提供される。
【００１７】
請求項９に係る発明として、前記グラビア版は、凹溝の容積が１〜１５ｍｌ／ｍ２である請求項７，８いずれかに記載の繊維ウエブへの薬液塗布方法が提供される。
【００１８】
上記請求項５〜９記載の発明によれば、前記繊維ウエブの種類およびクレープ率、前記薬液の種類、粘度および塗布量、前記グラビア版のグラビア線数および凹部の容積を具体的に規定することで、より確実に繊維ウエブに対する塗布性能が安定し、均一性を担保することができる。
【００１９】
請求項１０に係る発明として、原反ロールから繰り出された繊維ウエブが製品化されるライン設備において、
繊維ウエブの一方面側に配置される薬液塗工ロールと、この薬液塗工ロールに対面させた状態で繊維ウエブの他方面側に配置される繊維ウエブ押圧ロールとからなる第１の薬液塗布装置と、
繊維ウエブの他方面側に配置される薬液塗工ロールと、この薬液塗工ロールに対面させた状態で繊維ウエブの一方面側に配置される繊維ウエブ押圧ロールとからなる第２の薬液塗布装置とを備えたことを特徴とする繊維ウエブへの薬液塗布装置が提供される。
【００２０】
請求項１１に係る発明として、原反ロールから繰り出された繊維ウエブが製品化されるライン設備において、
繊維ウエブの一方面側に配置される薬液塗工ロールと、この薬液塗工ロールの出側位置に配設されるとともに、繊維ウエブを跨いで対面状態で設けられた一対の繊維ウエブ押圧ロールとからなる第１の薬液塗布装置と、
繊維ウエブの他方面側に配置される薬液塗工ロールと、この薬液塗工ロールの出側位置に配設されるとともに、繊維ウエブを跨いで対面状態で設けられた一対の繊維ウエブ押圧ロールとからなる第２の薬液塗布装置とを備えたことを特徴とする繊維ウエブへの薬液塗布装置が提供される。
【００２１】
【発明の実施の形態】
以下、本発明の実施の形態について図面を参照しながら詳述する。図１は本発明に係る繊維ウエブ加工装置の全体図であり、図２はその薬液塗布装置３部位の拡大図である。
【００２２】
前記繊維ウエブ加工装置は主に、この繊維ウエブ１を製品化工程に繰り出す２組の原反ロール２，２と、前記原反ロール２より繰り出された繊維ウエブ１に薬液を塗布する薬液塗布装置３と、前記薬液塗布装置３を経た繊維ウエブ１に対してエンボス加工を施すエンボスユニット４と、前記エンボスユニット４を経た繊維ウエブを一定の長さに切断する切断装置５と、折り加工装置（図示せず）とから構成されている。本装置例では前記繊維ウエブ１として、２枚１組のティッシュペーパーを対象としているため、原反ロール２が２組配置され、それぞれから繰り出される繊維ウエブ１、１の表裏面に対して夫々薬液の塗布を行うようになっている。なお、上記例ではティッシュペーパーの例であるが、これ以外にトイレットペーパー等の家庭用薄葉紙を対象とすることができる。また、前記原反ロール２、エンボスユニット４および切断装置５等については、繊維ウエブの製品化工程において一般に用いられている公知の装置を用いることができる。
【００２３】
前記薬液塗布装置３について詳述すると、図２に示されるように、各繊維ウエブ１，１に対し、繊維ウエブ１の一方面側に配置される薬液塗工ロール６と、この薬液塗工ロール６に対面させた状態で繊維ウエブ１の他方面側に配置される繊維ウエブ押圧ロール７とからなる第１の薬液塗布装置Ｆ１と、繊維ウエブ１の他方面側に配置される薬液塗工ロール６と、この薬液塗工ロール６に対面させた状態で繊維ウエブ１の一方面側に配置される繊維ウエブ押圧ロール７とからなる第２の薬液塗布装置Ｆ２とを備える。
【００２４】
前記原反ロール２から繰り出された繊維ウエブ１は、先ず上段側の第１の薬液塗布装置Ｆ１において、薬液塗工ロール６により一方面側に薬液が塗布されると同時に、この薬液塗工ロール６と対峙する繊維ウエブ押圧ロール７（以下、単に押圧ロールという。）により他方面側から押圧され、薬液が繊維ウエブ１中に含浸される。次いで、下段側の第２の薬液塗布装置Ｆ２部位において、薬液塗工ロール６により他方面側に薬液が塗布されると同時に、この薬液塗工ロール６と対峙する押圧ロール７により一方面側から押圧され、薬液が繊維ウエブ１中に含浸されるようになっている。
【００２５】
前記薬液塗布装置Ｆ１（Ｆ２）について更に図３に基づいて詳述すると、繊維ウエブ１の一方面側に配置される前記薬液塗工ロール６にはグラビア版が用いられ、繊維ウエブ１の他方面側に配置される前記押圧ロール７にはゴム圧胴が用いられ、この押圧ロール７は油圧ジャッキ８等のスライド制御手段により押圧力が調整可能になっている。前記押圧ロール７による押圧力（線圧）は、０．３〜２．２ｋｇｆ／ｃｍ、好ましくは０．８〜１．５ｋｇｆ／ｃｍの範囲になるように調整するのが望ましい。なお、前記押圧ロール７のスライド制御手段としては、前記油圧ジャッキ８等の他、ネジ作用による進退制御としてもよい。
【００２６】
前記薬液塗工ロール６のグラビア版は、周面の母線方向に沿って一定間隔で細かな凹溝が多数設けられており、この凹溝に充填された薬液が繊維ウエブ１に対して塗布されるようになっている。前記凹溝の数、すなわちグラビア線数は、１インチ当たり１００〜３００線の割合で設けるのが好ましい。３００線を超えると繊維ウエブへの薬液塗布具合が不均一となる一方、１００線未満の場合には薬液を繊維ウエブに含浸させるのに時間がかかり、品質にムラが生じる虞がある。さらに、前記グラビア線数は、繊維ウエブに薬液をより均一に塗布させるとともに、製品の品質を安定化させるために、１インチ当たり１２０〜２２５線の割合で設けるのがより好ましい。また、同様の理由から前記凹溝の容積は、１〜１５ｍｌ／ｍ３とするのが好ましく、最適には２〜５ｍｌ／ｍ３である。
【００２７】
前記薬液塗工ロール６の背面側（押圧ロール７対峙面と反対側の面）には、薬液供給管９が設けられており、前記薬液供給管９に供給された薬液がリップ部１０を経て薬液塗工ロール６に供給されるようになっている。前記薬液としては、一般的に使用されているものであればどのようなものであってもよい。具体的には、グリセリン、ジグリセリン、プロピレングリコール、１，３−ブチレングリコール、ポリエチレングリコール等の多価アルコール、ソルビトール、グルコース、キシリトール、マルトース、マルチトール、マンニトール、トレハロース等の糖類、グルコール系薬剤およびその誘導体、セタノール、ステアリルアルコール、オレイルアルコール等の高級アルコール、流動パラフィンなどの１種以上を任意の組合せで用いることができる。また、これにグリシン、アスパラギン酸、アルギニン、アラニン、シスチン、システィンなどのアミノ酸、アロエエキス、アマチャエキス、アシタバエキス、カリンエキス、キュウリエキス、スギナエキス、トマトエキス、ノバラエキス、ヘチマエキス、ユリエキス、レンゲソウエキスなどの植物抽出エキスや、オリーブ油、ホホバ油、ローズヒップ油、アーモンド油、ユーカリ油、アボカド油、ツバキ油、大豆油、サフラワー油、ゴマ油、月見草油等の植物油や、ビタミン、加水分解コラーゲン、加水分解ケラチン、加水分解シルク、キトサン、尿素、ハチミツ、ローヤルゼリー、ヒアルロン酸ナトリウム、セラミド、スクワラン、ワセリンなどを配合することができる。オンライン塗布を均一に行うためには、前記薬液の粘度は１〜５００ｃｐｓ、好ましくは５０〜３００ｃｐｓの範囲に調整するのがよい。粘度が５００ｃｐｓを超える場合には、ブレードの掻き取り制御が難しくなり、掻き取り不良を生じ易く、また粘度が高いために転移不良が起こるなどして好ましくない。なお、前記薬液の粘性は温度や湿度等の外部条件で変化するため、この外部条件に応じて前記押圧ロール７の押圧力を調整するのが望ましい。
【００２８】
一方、前記薬液塗工ロール６の下方には、前記リップ部１０と薬液塗工ロール６との間隙から落下した薬液を回収する薬液受けパン１１が設けられている。前記薬液受けパン１１によって回収された薬液は、再度前記薬液供給管９に供給されるようになっている。
【００２９】
前記薬液塗工ロール６の上方部位には、薬液掻き取り装置１２が備えられている。前記薬液掻き取り装置１２には前記薬液塗工ロールに先端が接触するドクターブレード１３が設けられ、前記薬液塗工ロール６の表面に存在する過分な薬液を掻き取るようになっている。なお、前記薬液の塗布量としては、繊維ウエブ１の両面で２〜２０ｇ／ｍ２となるように調整するのが望ましい。薬液塗布量が２ｇ／ｍ２未満ではしっとり感が不足し、２０ｇ／ｍ２を超える場合にはべた付き感が出るようになる。最適範囲は６〜１０ｇ／ｍ２である。なお、繊維ウエブ１の表裏面に対する塗布量は均等とする必要はなく、むしろ２枚１組で重ねられた状態で裏面側となる面に対する塗布量を相対的に多くすることにより、べた付き感を抑えながらしっとり感を増大させるようにするのが望ましい。
【００３０】
前記繊維ウエブ１の薬液塗布装置３において、より均一に薬液を塗布するためには、繊維ウエブのクレープ率は好ましくは１５〜２５％の家庭用薄葉紙を用いるのがよい。
【００３１】
〈第２形態例〉
さらに、前記薬液塗工ロール６および押圧ロール７の配置構成は図示の構成以外に、例えば図４に示されるように、繊維ウエブ１の一方面側に配置される薬液塗工ロール６と、この薬液塗工ロール６の出側位置に配設されるとともに、繊維ウエブ１を跨いで対面状態で設けられた一対の押圧ロール７，７とからなる第１の薬液塗布装置Ｆ１と、繊維ウエブ１の他方面側に配置される薬液塗工ロール６と、この薬液塗工ロール６の出側位置に配設されるとともに、繊維ウエブ１を跨いで対面状態で設けられた一対の押圧ロール７，７とからなる第２の薬液塗布装置Ｆ２とを備えるようにしてもよい。
【００３２】
かかる構成の場合には、原反ロール２より繰り出された繊維ウエブ１は、先ず上段側の第１の薬液塗布装置Ｆ１において、薬液塗工ロール６により一方面側に薬液が塗布された直後に、押圧ロール７、７により押圧され、薬液が繊維ウエブ１中に含浸される。次いで、下段側の第２の薬液塗布装置Ｆ２において、薬液塗工ロール６により、他方面側に薬液が塗布された直後に、押圧ロール７、７により再度押圧され、薬液が繊維ウエブ１中に含浸されることとなる。
【００３３】
【発明の効果】
以上詳説のとおり本発明によれば、原反ロールから繰り出される繊維ウエブの製品化過程において、高速下であって均一に薬液を塗布できるようになるとともに、繊維ウエブに薬液を迅速に含浸させ、しっとり感を早期に立ち上がらせることが可能となる。
【図面の簡単な説明】
【図１】本発明が適用される繊維ウエブ加工装置の全体図である。
【図２】その薬液塗布装置３部位の拡大図である。
【図３】さらにその腰部拡大図である。
【図４】薬液塗布装置３の変形例図である。
【符号の説明】
１…繊維ウエブ、２…原反ロール、３…薬液塗布装置、６…薬液塗工ロール、７…繊維ウエブ押圧ロール、８…油圧ジャッキ、９…薬液供給管、Ｆ１…第１の薬液塗布装置、Ｆ２…第２の薬液塗布装置[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method and an apparatus for applying a chemical solution to a fiber web in a process in which a fiber web unwound from a raw roll is commercialized.
[0002]
[Prior art]
2. Description of the Related Art In a product made of a fiber web typified by household thin paper such as tissue paper and toilet paper, a product coated with a chemical such as a lotion chemical to impart hygroscopicity and flexibility is known. As a method of applying a chemical solution to the fiber web, for example, a method of spraying a chemical solution on the fiber web, dipping the fiber web in the chemical solution, or applying a chemical solution by a coating roll is adopted. As the latter method using a coating roll, for example, as shown in Patent Literature 1 below, a coating device including a gravure plate roll and an offset coating roll (transfer roll) is arranged in a state of facing each other with a fiber web therebetween. A method is described in which a so-called gravure transfer type lotion chemical liquid application device simultaneously applies a lotion chemical liquid to both surfaces of a fiber web.
[0003]
Further, in Patent Document 2 below, in impregnating a fiber web with a chemical solution, a chemical solution is sprayed on the web, immersed in the chemical solution, or impregnated by a method such as printing on the web by a printing machine. It is described that the chemical solution can be impregnated online.
[0004]
[Patent Document 1]
Japanese Patent Publication No. 10-501853 [Patent Document 2]
JP-A-5-156596
[Problems to be solved by the invention]
However, in the method disclosed in Patent Document 1, if a chemical solution is applied to a fiber web fed from a raw roll, the fiber web is wound up again in a roll shape, which is a so-called off-line process. Therefore, since the process is different from the production line, the process is complicated, and it takes a long time to produce the product, and there is a problem that the cost to produce the product increases. Also, in the case of the gravure transfer method, if the amount of application is increased, unevenness or ripples will occur on the transfer roll, causing application unevenness. In particular, when the coating speed is 70 m / min or more, there is a problem that bouncing occurs and stripe-like unevenness occurs.
[0006]
On the other hand, in the method disclosed in Patent Document 2, although it is described that a chemical solution can be applied in a commercialization process (online), when the chemical solution is actually applied online, immediately after the application, However, there is a problem that the chemical liquid is not sufficiently impregnated into the fiber web, the degree of application of the chemical liquid becomes uneven, or the moist feeling is slowly delayed. Was.
[0007]
Therefore, a main problem of the present invention is that in the process of producing a fiber web fed from a raw roll, a chemical solution can be uniformly applied under a high speed, and the fiber web is quickly impregnated with the chemical solution and moistened. It is an object of the present invention to provide a method and an apparatus for applying a chemical solution to a fiber web, which can start the feeling early.
[0008]
[Means for Solving the Problems]
As an invention according to claim 1 for solving the above problem, in a line process in which a fiber web unwound from a raw roll is commercialized,
In the line, a chemical solution coating roll disposed on one surface side of the fiber web, and a fiber web pressing roll disposed on the other surface side of the fiber web in a state facing the chemical solution coating roll. 1 chemical liquid application device,
A second chemical liquid coating apparatus comprising: a chemical liquid application roll disposed on the other surface side of the fiber web; and a fiber web pressing roll disposed on one surface side of the fiber web in a state facing the chemical liquid application roll. With
In the first chemical liquid application device, the chemical liquid is applied to one surface side of the fiber web by the chemical liquid application roll, and at the same time, the chemical liquid is impregnated into the fiber web by pressurization by the fiber web pressing roll,
Next, in the second chemical liquid application device, the chemical liquid is applied to the other surface side of the fiber web by the chemical liquid application roll, and simultaneously, the chemical liquid is impregnated into the fiber web by pressurization by the fiber web pressing roll. A method for applying a chemical solution to a fiber web is provided.
[0009]
As the invention according to claim 2, in a line process in which the fiber web unwound from the raw roll is commercialized,
In the line, a chemical solution coating roll disposed on one surface side of the fiber web, and a pair of the chemical solution coating rolls disposed at the exit side of the chemical solution coating roll and provided in a facing state across the fiber web. A first chemical liquid applicator comprising a fiber web pressing roll;
A chemical solution coating roll disposed on the other surface side of the fiber web, and a pair of fiber web pressing rolls disposed at the outlet side position of the chemical solution coating roll and provided in a facing state across the fiber web, A second chemical solution application device comprising:
In the first chemical liquid applicator, after applying a chemical liquid on one surface side of the fiber web by the chemical liquid coating roll, impregnating the fiber web with the chemical liquid by pressurizing the pair of fiber web pressing rolls,
Next, in the second chemical liquid application device, the chemical liquid is applied to the other surface side of the fiber web by the chemical liquid application roll, and then the fiber liquid is impregnated into the fiber web by pressurization by the fiber web pressing roll. A method for applying a chemical solution to a fiber web is provided.
[0010]
According to the first and second aspects of the present invention, in the step of commercializing the fiber web fed from the raw fabric roll, a chemical solution is applied to the fiber web by a chemical solution coating roll, or at the same time or immediately after the application. Was pressed by a pressing roll to impregnate the chemical web into the fiber web. Therefore, upon commercialization immediately after that, the chemical web is quickly impregnated with the chemical solution, and the feeling of moistness rises quickly and the quality does not deteriorate. Further, in the present invention, the application step is divided on the front and back surfaces of the fiber web, and by adjusting the pressing force of the pressing roll, it becomes possible to control the permeability and nip pressure of the chemical solution, so that even at high speeds A chemical solution can be applied uniformly.
[0011]
As the invention according to claim 3, the fibrous web is tissue thin paper such as tissue paper, toilet paper, etc., and the raw fabric roll is provided in two sets, and the first chemical liquid applicator and the A method for applying a chemical solution to a fiber web according to any one of claims 1 and 2, further comprising the second chemical solution applying device.
[0012]
According to a fourth aspect of the present invention, there is provided the method of applying a chemical solution to a fiber web according to any one of the first to third aspects, wherein the fiber web has a crepe ratio of 15 to 25%.
[0013]
According to a fifth aspect of the present invention, there is provided the method for applying a chemical solution to a fiber web according to any one of the first to fourth aspects, wherein the chemical solution is a lotion chemical solution having a viscosity of 1 to 500 cps.
[0014]
The invention according to claim 6 provides the method for applying a chemical solution to a fiber web according to any one of claims 1 to 5, wherein the amount of the lotion chemical solution applied is 2 to 20 g / m 2 on both sides of the fiber web. .
[0015]
The invention according to claim 7, wherein the coating roll is a gravure plate, and the fiber web pressing roll is a rubber impression cylinder. The method for applying a chemical solution to a fiber web according to any one of claims 1 to 6, is provided. You.
[0016]
According to an eighth aspect of the present invention, there is provided the method for applying a chemical liquid to a fiber web according to the seventh aspect, wherein the number of gravure lines of the gravure plate is provided at a rate of 100 to 300 lines per inch.
[0017]
According to a ninth aspect of the present invention, there is provided the method for applying a chemical solution to a fiber web according to any one of the seventh and eighth aspects, wherein the gravure plate has a groove having a volume of 1 to 15 ml / m 2 .
[0018]
According to the invention as set forth in claims 5 to 9, the type and crepe rate of the fiber web, the type, viscosity and coating amount of the chemical solution, the number of gravure lines of the gravure plate, and the volume of the concave portion are specifically defined. Thus, the coating performance on the fiber web is more reliably stabilized, and uniformity can be ensured.
[0019]
As the invention according to claim 10, in a line facility in which the fiber web unwound from the raw roll is commercialized,
A first chemical liquid coating apparatus comprising: a chemical liquid coating roll disposed on one surface side of a fiber web; and a fiber web pressing roll disposed on the other surface side of the fiber web in a state facing the chemical liquid coating roll. When,
A second chemical liquid coating apparatus comprising: a chemical liquid application roll disposed on the other surface side of the fiber web; and a fiber web pressing roll disposed on one surface side of the fiber web in a state facing the chemical liquid application roll. The present invention provides an apparatus for applying a chemical solution to a fiber web, comprising:
[0020]
As the invention according to claim 11, in a line facility where the fiber web unwound from the raw roll is commercialized,
A chemical solution coating roll disposed on one side of the fiber web, and a pair of fiber web pressing rolls disposed at the outlet side position of the chemical solution coating roll and provided in a facing state across the fiber web, A first chemical liquid applicator comprising:
A chemical solution coating roll disposed on the other surface side of the fiber web, and a pair of fiber web pressing rolls disposed at the outlet side position of the chemical solution coating roll and provided in a facing state across the fiber web, And a second chemical liquid applying device comprising: a chemical liquid applying device for a fiber web.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall view of a fiber web processing apparatus according to the present invention, and FIG. 2 is an enlarged view of three portions of the chemical liquid applying apparatus.
[0022]
The fiber web processing apparatus is mainly composed of two sets of material rolls 2 and 2 for feeding the fiber web 1 to a commercialization process, and a chemical coating device for applying a chemical solution to the fiber web 1 fed from the material roll 2. 3, an embossing unit 4 for embossing the fiber web 1 having passed through the chemical liquid applicator 3, a cutting device 5 for cutting the fiber web having passed through the embossing unit 4 into a predetermined length, and a folding device ( (Not shown)). In the present example of the apparatus, two sets of raw paper rolls 2 are arranged as the fiber web 1 as a set of two tissue papers, and a chemical solution is applied to each of the front and back surfaces of the fiber webs 1 and 1 fed from each. Is applied. Although the above example is an example of tissue paper, household thin paper such as toilet paper may be used in addition to this. As the raw roll 2, the embossing unit 4, the cutting device 5, and the like, a known device generally used in a process of producing a fiber web can be used.
[0023]
The chemical coating device 3 will be described in detail. As shown in FIG. 2, a chemical coating roll 6 disposed on one side of the fiber web 1 for each of the fiber webs 1 and 1, and a chemical coating roll 6 the first chemical liquid coating device F 1 consisting of fibrous web pressing roll 7 for being placed on the other side of the web 1 in a state of being opposed to 6, chemical coating disposed on the other side of the web 1 It comprises a roll 6, the second chemical liquid coating device F 2 of fiber web pressing roll 7 for being placed on one side of the web 1 in a state of being opposed to the chemical coating roll 6.
[0024]
The fiber web 1 unwound from the material roll 2 is first coated with a chemical on one side by a chemical coating roll 6 in a first chemical coating device F1 on the upper stage, and at the same time, the chemical coating is performed. The fiber web pressing roll 7 (hereinafter, simply referred to as a pressing roll) facing the roll 6 is pressed from the other surface side, and the chemical liquid is impregnated in the fiber web 1. Then, in the second chemical liquid coating device F 2 sites of the lower side, and at the same time chemical on the other surface side by a chemical solution coating roll 6 is applied, one side by the pressing rolls 7 that confront the chemical coating roll 6 And the chemical liquid is impregnated into the fiber web 1.
[0025]
The chemical coating device F 1 (F 2 ) will be described in detail with reference to FIG. 3. A gravure plate is used for the chemical coating roll 6 disposed on one side of the fiber web 1. A rubber impression cylinder is used for the pressing roll 7 disposed on the other surface side, and the pressing force of the pressing roll 7 can be adjusted by slide control means such as a hydraulic jack 8. It is desirable that the pressing force (linear pressure) by the pressing roll 7 is adjusted to be in the range of 0.3 to 2.2 kgf / cm, preferably 0.8 to 1.5 kgf / cm. In addition, as the slide control means of the pressing roll 7, in addition to the hydraulic jack 8, etc., advance / retreat control by a screw action may be performed.
[0026]
The gravure plate of the chemical coating roll 6 is provided with a large number of fine grooves at regular intervals along the generatrix of the peripheral surface, and the chemical filled in the grooves is applied to the fiber web 1. It has become so. The number of the concave grooves, that is, the number of gravure lines is preferably provided at a rate of 100 to 300 lines per inch. If it exceeds 300 lines, the degree of application of the chemical solution to the fiber web becomes uneven, while if it is less than 100 lines, it takes time to impregnate the fiber web with the chemical solution, and there is a possibility that the quality may be uneven. Further, the number of gravure lines is more preferably set at a rate of 120 to 225 lines per inch in order to more uniformly apply the chemical solution to the fiber web and stabilize the quality of the product. For the same reason, the volume of the groove is preferably 1 to 15 ml / m 3, and most preferably 2 to 5 ml / m 3 .
[0027]
A chemical supply pipe 9 is provided on the back side of the chemical coating roll 6 (the surface opposite to the surface facing the pressing roll 7), and the chemical supplied to the chemical supply pipe 9 passes through the lip portion 10. It is supplied to the chemical coating roll 6. The chemical may be any liquid that is generally used. Specifically, polyhydric alcohols such as glycerin, diglycerin, propylene glycol, 1,3-butylene glycol, and polyethylene glycol, sorbitol, glucose, xylitol, maltose, maltitol, mannitol, saccharides such as trehalose, glycol-based drugs and One or more of its derivatives, higher alcohols such as cetanol, stearyl alcohol, and oleyl alcohol, and liquid paraffin can be used in any combination. In addition, glycine, aspartic acid, arginine, alanine, cystine, cystine, and other amino acids, aloe extract, amacha extract, ashitaba extract, carin extract, cucumber extract, horsetail extract, tomato extract, novara extract, loofah extract, lily extract, lily root extract Vegetable extracts such as olive oil, jojoba oil, rosehip oil, almond oil, eucalyptus oil, avocado oil, camellia oil, soybean oil, safflower oil, sesame oil, evening primrose oil, etc., vitamins, hydrolyzed collagen, Hydrolyzed keratin, hydrolyzed silk, chitosan, urea, honey, royal jelly, sodium hyaluronate, ceramide, squalane, petrolatum, and the like can be added. In order to perform online application uniformly, the viscosity of the chemical solution is preferably adjusted to 1 to 500 cps, preferably 50 to 300 cps. If the viscosity is more than 500 cps, it is difficult to control the scraping of the blade, it is easy to cause poor scraping, and the viscosity is high. Since the viscosity of the chemical solution changes depending on external conditions such as temperature and humidity, it is desirable to adjust the pressing force of the pressing roll 7 according to the external conditions.
[0028]
On the other hand, below the chemical coating roll 6, there is provided a chemical receiving pan 11 for collecting the chemical dropped from the gap between the lip portion 10 and the chemical coating roll 6. The chemical liquid collected by the chemical liquid receiving pan 11 is supplied to the chemical liquid supply pipe 9 again.
[0029]
A chemical liquid scraping device 12 is provided above the chemical liquid coating roll 6. The chemical liquid scraping device 12 is provided with a doctor blade 13 whose tip is in contact with the chemical liquid coating roll, and is configured to scrape excess chemical liquid existing on the surface of the chemical liquid coating roll 6. In addition, it is desirable to adjust the application amount of the chemical solution to be 2 to 20 g / m 2 on both sides of the fiber web 1. When the applied amount of the chemical solution is less than 2 g / m 2 , a moist feeling is insufficient, and when the applied amount exceeds 20 g / m 2 , a sticky feeling is produced. Optimal range is 6-10 g / m 2. The amount of application on the front and back surfaces of the fiber web 1 does not need to be equal, but rather, by increasing the amount of application on the surface on the back surface side in a state where the two webs are stacked, a sticky feeling is obtained. It is desirable to increase the moist feeling while suppressing the pressure.
[0030]
In the chemical liquid applicator 3 for the fiber web 1, in order to apply the chemical liquid more uniformly, it is preferable to use household thin paper having a crepe ratio of the fiber web of preferably 15 to 25%.
[0031]
<Second embodiment>
Further, in addition to the configuration shown in the drawing, the arrangement of the chemical coating roll 6 and the pressing roll 7 is, for example, as shown in FIG. 4, a chemical coating roll 6 arranged on one side of the fiber web 1, and A first chemical liquid applicator F 1 , which is disposed at the outlet side of the chemical liquid applying roll 6 and includes a pair of pressing rolls 7, 7 provided facing each other across the fiber web 1; 1 and a pair of pressing rolls 7 disposed at the outlet side of the chemical coating roll 6 and provided in a facing state across the fiber web 1. , it may be provided with a second chemical liquid coating device F 2 consisting of 7.
[0032]
In the case of such a configuration, the raw fibrous web 1 fed out from the roll 2, first, in the first chemical solution coating apparatus F 1 of the upper side, just after the chemical has been applied on one side by a chemical solution coating roll 6 Then, the fibers are pressed by the pressing rolls 7, 7, and the chemical liquid is impregnated in the fiber web 1. Then, in the second chemical liquid coating device F 2 of the lower side, by a chemical solution coating roll 6, immediately after the chemical solution on the other surface side is applied, it is pressed again by the pressing roll 7, 7, the chemical liquid in the fiber web 1 Will be impregnated.
[0033]
【The invention's effect】
According to the present invention as described in detail above, in the process of commercializing the fiber web unwound from the raw roll, it is possible to uniformly apply the chemical solution under high speed, and to quickly impregnate the fiber web with the chemical solution, The moist feeling can be quickly raised.
[Brief description of the drawings]
FIG. 1 is an overall view of a fiber web processing apparatus to which the present invention is applied.
FIG. 2 is an enlarged view of three parts of the liquid medicine application device.
FIG. 3 is an enlarged view of the waist.
FIG. 4 is a modified example of the chemical liquid application device 3.
[Explanation of symbols]
1 ... fiber web, 2 ... original fabric roll, 3 ... liquid applying apparatus, 6 ... chemical coating roll, 7 ... fiber web pressing roll, 8 ... hydraulic jack, 9 ... chemical supply pipe, F 1 ... first liquid applying Apparatus, F 2 ... second chemical liquid application apparatus

Claims (11)

原反ロールから繰り出された繊維ウエブが製品化されるライン工程において、
前記ライン中に、繊維ウエブの一方面側に配置される薬液塗工ロールと、この薬液塗工ロールに対面させた状態で繊維ウエブの他方面側に配置される繊維ウエブ押圧ロールとからなる第１の薬液塗布装置と、
繊維ウエブの他方面側に配置される薬液塗工ロールと、この薬液塗工ロールに対面させた状態で繊維ウエブの一方面側に配置される繊維ウエブ押圧ロールとからなる第２の薬液塗布装置とを備え、
前記第１の薬液塗布装置において、前記薬液塗工ロールにより繊維ウエブの一方面側に薬液を塗布すると同時に、前記繊維ウエブ押圧ロールによる加圧により前記薬液を繊維ウエブ中に含浸させ、
次いで、前記第２の薬液塗布装置において、前記薬液塗工ロールにより前記繊維ウエブの他方面側に薬液を塗布すると同時に、前記繊維ウエブ押圧ロールによる加圧により前記薬液を繊維ウエブ中に含浸させることを特徴とする繊維ウエブへの薬液塗布方法。In the line process where the fiber web unwound from the raw roll is commercialized,
In the line, a chemical solution coating roll disposed on one surface side of the fiber web, and a fiber web pressing roll disposed on the other surface side of the fiber web in a state facing the chemical solution coating roll. 1 chemical liquid application device,
A second chemical liquid coating apparatus comprising: a chemical liquid application roll disposed on the other surface side of the fiber web; and a fiber web pressing roll disposed on one surface side of the fiber web in a state facing the chemical liquid application roll. With
In the first chemical liquid application device, the chemical liquid is applied to one surface side of the fiber web by the chemical liquid application roll, and at the same time, the chemical liquid is impregnated into the fiber web by pressurization by the fiber web pressing roll,
Next, in the second chemical liquid application device, the chemical liquid is applied to the other surface side of the fiber web by the chemical liquid application roll, and simultaneously, the chemical liquid is impregnated into the fiber web by pressurization by the fiber web pressing roll. A method for applying a chemical solution to a fiber web, comprising the steps of: 原反ロールから繰り出された繊維ウエブが製品化されるライン工程において、
前記ライン中に、繊維ウエブの一方面側に配置される薬液塗工ロールと、この薬液塗工ロールの出側位置に配設されるとともに、繊維ウエブを跨いで対面状態で設けられた一対の繊維ウエブ押圧ロールとからなる第１の薬液塗布装置と、
繊維ウエブの他方面側に配置される薬液塗工ロールと、この薬液塗工ロールの出側位置に配設されるとともに、繊維ウエブを跨いで対面状態で設けられた一対の繊維ウエブ押圧ロールとからなる第２の薬液塗布装置とを備え、
前記第１の薬液塗布装置において、前記薬液塗工ロールにより繊維ウエブの一方面側に薬液を塗布した後、前記一対の繊維ウエブ押圧ロールによる加圧により前記薬液を繊維ウエブ中に含浸させ、
次いで、前記第２の薬液塗布装置において、前記薬液塗工ロールにより前記繊維ウエブの他方面側に薬液を塗布した後、前記繊維ウエブ押圧ロールによる加圧により前記薬液を繊維ウエブ中に含浸させることを特徴とする繊維ウエブへの薬液塗布方法。In the line process where the fiber web unwound from the raw roll is commercialized,
In the line, a chemical solution coating roll disposed on one surface side of the fiber web, and a pair of the chemical solution coating rolls disposed at the exit side of the chemical solution coating roll and provided in a facing state across the fiber web. A first chemical liquid applicator comprising a fiber web pressing roll;
A chemical solution coating roll disposed on the other surface side of the fiber web, and a pair of fiber web pressing rolls disposed at the outlet side position of the chemical solution coating roll and provided in a facing state across the fiber web, A second chemical solution application device comprising:
In the first chemical liquid applicator, after applying a chemical liquid on one surface side of the fiber web by the chemical liquid coating roll, impregnating the fiber web with the chemical liquid by pressurizing the pair of fiber web pressing rolls,
Next, in the second chemical liquid application device, the chemical liquid is applied to the other surface side of the fiber web by the chemical liquid application roll, and then the fiber liquid is impregnated into the fiber web by pressurization by the fiber web pressing roll. A method for applying a chemical solution to a fiber web, comprising the steps of: 前記繊維ウエブはティッシュペーパー、トイレットペーパー等の家庭用薄葉紙であり、前記原反ロールは２組備えられ、各繊維ウエブ毎に、前記第１の薬液塗布装置および第２の薬液塗布装置を備える請求項１、２いずれかに記載の繊維ウエブへの薬液塗布方法。The fiber web is tissue paper such as tissue paper or toilet paper, and the fabric roll is provided in two sets, and each fiber web is provided with the first chemical liquid application device and the second chemical liquid application device. Item 6. The method for applying a chemical solution to a fiber web according to any one of Items 1 and 2. 前記繊維ウエブは、クレープ率１５〜２５％である請求項１〜３いずれかに記載の繊維ウエブへの薬液塗布方法。The method according to any one of claims 1 to 3, wherein the fiber web has a crepe ratio of 15 to 25%. 前記薬液は粘度１〜５００ｃｐｓのローション薬液である請求項１〜４いずれかに記載の繊維ウエブへの薬液塗布方法。The method according to claim 1, wherein the chemical is a lotion chemical having a viscosity of 1 to 500 cps. 前記ローション薬液の塗布量は、繊維ウエブの両面で２〜２０ｇ／ｍ２とした請求項１〜５いずれかに記載の繊維ウエブへの薬液塗布方法。The method for applying a chemical solution to a fiber web according to any one of claims 1 to 5, wherein an application amount of the lotion chemical solution is 2 to 20 g / m2 on both sides of the fiber web. 前記塗工ロールはグラビア版であるとともに、前記繊維ウエブ押圧ロールはゴム圧胴である請求項１〜６いずれかに記載の繊維ウエブへの薬液塗布方法。The method according to any one of claims 1 to 6, wherein the coating roll is a gravure plate, and the fiber web pressing roll is a rubber impression cylinder. 前記グラビア版のグラビア線数は１インチあたり１００〜３００線の割合で設けられている請求項７記載の繊維ウエブへの薬液塗布方法。The method of applying a chemical solution to a fiber web according to claim 7, wherein the number of gravure lines of the gravure plate is set at a rate of 100 to 300 lines per inch. 前記グラビア版は、凹溝の容積が１〜１５ｍｌ／ｍ２である請求項７，８いずれかに記載の繊維ウエブへの薬液塗布方法。The gravure plate has chemical solution application method of the fiber web according to any one of claims 7 and 8 volume of the groove is 1~15ml / m 2. 原反ロールから繰り出された繊維ウエブが製品化されるライン設備において、
繊維ウエブの一方面側に配置される薬液塗工ロールと、この薬液塗工ロールに対面させた状態で繊維ウエブの他方面側に配置される繊維ウエブ押圧ロールとからなる第１の薬液塗布装置と、
繊維ウエブの他方面側に配置される薬液塗工ロールと、この薬液塗工ロールに対面させた状態で繊維ウエブの一方面側に配置される繊維ウエブ押圧ロールとからなる第２の薬液塗布装置とを備えたことを特徴とする繊維ウエブへの薬液塗布装置。In the line equipment where the fiber web unwound from the raw roll is commercialized,
A first chemical liquid coating apparatus comprising: a chemical liquid coating roll disposed on one surface side of a fiber web; and a fiber web pressing roll disposed on the other surface side of the fiber web in a state facing the chemical liquid coating roll. When,
A second chemical liquid coating apparatus comprising: a chemical liquid application roll disposed on the other surface side of the fiber web; and a fiber web pressing roll disposed on one surface side of the fiber web in a state facing the chemical liquid application roll. An apparatus for applying a chemical solution to a fiber web, comprising: 原反ロールから繰り出された繊維ウエブが製品化されるライン設備において、
繊維ウエブの一方面側に配置される薬液塗工ロールと、この薬液塗工ロールの出側位置に配設されるとともに、繊維ウエブを跨いで対面状態で設けられた一対の繊維ウエブ押圧ロールとからなる第１の薬液塗布装置と、
繊維ウエブの他方面側に配置される薬液塗工ロールと、この薬液塗工ロールの出側位置に配設されるとともに、繊維ウエブを跨いで対面状態で設けられた一対の繊維ウエブ押圧ロールとからなる第２の薬液塗布装置とを備えたことを特徴とする繊維ウエブへの薬液塗布装置。In the line equipment where the fiber web unwound from the raw roll is commercialized,
A chemical solution coating roll disposed on one side of the fiber web, and a pair of fiber web pressing rolls disposed at the outlet side position of the chemical solution coating roll and provided in a facing state across the fiber web, A first chemical liquid applicator comprising:
A chemical solution coating roll disposed on the other surface side of the fiber web, and a pair of fiber web pressing rolls disposed at the outlet side position of the chemical solution coating roll and provided in a facing state across the fiber web, And a second chemical liquid applying device comprising: a chemical liquid applying device for a fiber web.
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