JP2002069898A - Paper for file holder and method for producing the same - Google Patents
Paper for file holder and method for producing the sameInfo
- Publication number
- JP2002069898A JP2002069898A JP2000269757A JP2000269757A JP2002069898A JP 2002069898 A JP2002069898 A JP 2002069898A JP 2000269757 A JP2000269757 A JP 2000269757A JP 2000269757 A JP2000269757 A JP 2000269757A JP 2002069898 A JP2002069898 A JP 2002069898A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- inner layer
- density
- surface layer
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 239000010410 layer Substances 0.000 claims abstract description 115
- 239000002245 particle Substances 0.000 claims abstract description 69
- 239000002344 surface layer Substances 0.000 claims abstract description 65
- 239000003094 microcapsule Substances 0.000 claims description 23
- 229920001131 Pulp (paper) Polymers 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 5
- 235000013311 vegetables Nutrition 0.000 abstract description 3
- 239000000123 paper Substances 0.000 description 169
- 239000003623 enhancer Substances 0.000 description 25
- 239000002655 kraft paper Substances 0.000 description 23
- 239000003795 chemical substances by application Substances 0.000 description 19
- 238000004513 sizing Methods 0.000 description 19
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 18
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 18
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 16
- 241000196324 Embryophyta Species 0.000 description 12
- 239000011121 hardwood Substances 0.000 description 12
- 239000013054 paper strength agent Substances 0.000 description 12
- 239000011122 softwood Substances 0.000 description 12
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 10
- 239000011229 interlayer Substances 0.000 description 10
- 238000004080 punching Methods 0.000 description 10
- 241000209094 Oryza Species 0.000 description 9
- 235000007164 Oryza sativa Nutrition 0.000 description 9
- 235000009566 rice Nutrition 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000004005 microsphere Substances 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 5
- 239000010893 paper waste Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 102200150779 rs200154873 Human genes 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 240000000797 Hibiscus cannabinus Species 0.000 description 1
- 244000273256 Phragmites communis Species 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 244000000231 Sesamum indicum Species 0.000 description 1
- 235000003434 Sesamum indicum Nutrition 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- UIUXUFNYAYAMOE-UHFFFAOYSA-N methylsilane Chemical compound [SiH3]C UIUXUFNYAYAMOE-UHFFFAOYSA-N 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Landscapes
- Sheet Holders (AREA)
- Paper (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、書類、図面、その
他文書を綴りとして保管する際に使用されるファイルホ
ルダー用紙およびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file holder sheet used for storing documents, drawings, and other documents as spelling, and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】従来より、書類、図面、その他文書を綴
りとして保管するために、ファイル・ホルダー用紙が市
場に提供されている。このファイル・ホルダー用紙は、
保管、取り扱いがし易いよう十分なコシを持たすため、
米坪250〜450g/ｍ２で、密度0.65〜0.90g/cm3で構成さ
れている。2. Description of the Related Art File holder papers have conventionally been provided on the market for spelling documents, drawings, and other documents. This file holder form
To have enough firmness for easy storage and handling,
In basis weight 250~450g / m 2, it is constituted by a density 0.65~0.90g / cm 3.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記フ
ァイル製品、ホルダー製品は、書類などを綴じる為に金
属製、プラスチック製などの治具が取り付けられてお
り、この治具がファイル・ホルダー用紙から容易には取
り外せないことから分別回収が行われにくく、古紙とし
て再利用されにくい製品となっており、使用済み後には
焼却される場合が多くなっている。However, the above-mentioned file products and holder products are provided with jigs made of metal, plastic or the like for binding documents and the like. Since it cannot be removed, it is difficult to separate and collect it, and it is difficult to reuse it as used paper. It is often incinerated after use.
【０００４】一方、昨今の地球環境問題から森林資源の
有効利用が望まれているが、ファイル用紙、ホルダー用
紙も例外ではなく、古紙100％の製品が製造されるよう
になっている。[0004] On the other hand, effective use of forest resources has been desired due to recent global environmental problems. File paper and holder paper are no exception, and products made of 100% recycled paper are being manufactured.
【０００５】以上の状況から、ファイル・ホルダー製品
は、紙原料として再利用が促進されにくいにも拘らず、
古紙100％の製品はコシを出すために、ｍ２当りの重量
を重くしており、植物繊維の使用量は増加の一途をたど
り、焼却量は年々増加する傾向にある。[0005] In view of the above situation, despite the fact that it is difficult to promote the reuse of file holder products as paper raw materials,
In order to give 100% recycled product stiffness, has heavier weight per m 2, the amount of plant fibers continues to increase, incineration tends to increase year by year.
【０００６】このような実情を配慮して焼却される量を
減らす為、使用する植物繊維の量を減らした低米坪品が
考案されているが、コシがなく書類等を保管するには、
十分な機能を満たせていない。[0006] In order to reduce the amount of incineration in consideration of such a situation, a low rice tsubo product with a reduced amount of plant fiber to be used has been devised.
Not enough functions.
【０００７】そこで本発明の主たる課題は、植物繊維の
使用量を減らしつつ、書類、図面、その他文書を綴りと
して保管する表紙として、十分なコシ、強度、風合い、
良好な打ち抜き加工適性を持つファイル及びホルダー用
紙、並びにこれらファイル・ホルダー用紙の製造方法を
提供しようとするものである。[0007] The main object of the present invention is to reduce the amount of plant fiber used, and to provide sufficient cover, strength, texture, and the like as a cover for storing documents, drawings, and other documents as spells.
An object of the present invention is to provide a file and a holder sheet having good punching suitability and a method for producing the file and holder sheet.
【０００８】[0008]
【課題を解決するための手段】本発明は、上記従来の欠
点を解決するため、鋭意検討した結果、表層部の密度を
高くしてコシを出し易い層を設け、内層部に植物繊維と
熱発泡粒子を混在させた低密度層を設けることで、植物
繊維使用量を少なくするとともに、コシ(剛度)、強度が
あり、ファイルの形に切り抜く際、打ち抜き機械加工適
性に優れたファイル及びホルダー用紙が得られることを
見出し、本発明を完成するに至った。Means for Solving the Problems In order to solve the above-mentioned conventional drawbacks, the present invention has conducted intensive studies, and as a result, provided a layer in which the density of the surface layer is increased so that stiffness is easily produced, and the plant fiber and heat are provided in the inner layer. By providing a low-density layer in which foamed particles are mixed, the amount of vegetable fiber used is reduced, and stiffness (rigidity) and strength are provided. Was obtained, and the present invention was completed.
【０００９】すなわち、本発明によれば、少なくとも表
層部と内層部とを有し、前記表層部が密度0.65〜0.90g/
cm3に、前記内層部が密度0.2〜0.5g/cm3に調整された多
層抄き用紙であって、前記内層部に熱発泡粒子を含んで
いることを特徴とするファイル・ホルダー用紙が提供さ
れる。この場合、前記内層部において、含まれる熱発泡
粒子が表層部側に多く偏在していてもよい。That is, according to the present invention, at least a surface layer portion and an inner layer portion are provided, and the surface layer portion has a density of 0.65 to 0.90 g /
in cm 3, the inner layer portion is a multilayer paper making paper is adjusted to a density 0.2-0.5 g / cm 3, the file holder sheet, characterized in that it contains a blowing particles provided to the inner portion Is done. In this case, in the inner layer portion, a large amount of the thermally expanded particles may be unevenly distributed on the surface layer side.
【００１０】また、具体的態様に係るものでは、一方の
表層部が密度0.65〜0.90g/cm3、内層部が密度0.2〜0.5g
/cm3、他方の表層部が密度0.65〜0.90g/cm3に調整され
た多層抄き用紙であって、前記内層部に熱発泡粒子を含
んでいることを特徴とするファイル・ホルダー用紙が提
供される。According to a specific embodiment, one surface layer has a density of 0.65 to 0.90 g / cm 3 , and the inner layer has a density of 0.2 to 0.5 g / cm 3 .
/ cm 3 , the other surface layer is a multi-layered paper adjusted to a density of 0.65 to 0.90 g / cm 3 , wherein the inner layer portion contains thermofoamed particles, and the file holder paper is characterized in that: Provided.
【００１１】他方、その製造方法は、木材パルプを主成
分として抄造した表層部湿紙と、木材パルプ及び発泡性
粒子を主成分として抄造した内層部湿紙とを抄合させた
後、前記発泡性粒子が加熱発泡されるとともに、前記表
層部の密度が0.65〜0.90g/cm 3に、前記内層部の密度が
0.2〜0.5g/cm3になるように加熱乾燥することを特徴と
するファイル・ホルダー用紙の製造方法が提供される。
この場合、前記内層部湿紙は、木材パルプを主成分とす
る湿紙に発泡性粒子の分散液がスプレー塗布され、前記
発泡性粒子が湿紙の厚さ方向でかつ紙層内に分布される
ことでもよい。On the other hand, the production method mainly uses wood pulp.
Surface paper wet paper, paper pulp and foaming
The inner layer was made by mixing the paper with the inner layer wet paper
Thereafter, the expandable particles are heated and expanded,
The density of the layer is 0.65 ~ 0.90g / cm ThreeIn addition, the density of the inner layer portion is
0.2-0.5g / cmThreeIt is characterized by drying by heating to become
A method for manufacturing a file holder sheet is provided.
In this case, the inner layer wet paper mainly contains wood pulp.
Sprayed with a dispersion of expandable particles on wet paper,
Expandable particles are distributed in the thickness direction of the wet paper and in the paper layer
It may be.
【００１２】具体的態様に係るものでは、木材パルプ及
び発泡性粒子を主成分として抄造した内層部湿紙を、木
材パルプを主成分として抄造した２つの表層部湿紙によ
り挟んで抄き合せた後、前記発泡性粒子が加熱発泡され
るとともに、２つの表層部の密度が0.65〜0.95g/cm
3に、前記内層部の密度が0.2〜0.5g/cm3になるように加
熱乾燥することを特徴とするファイル・ホルダー用紙の
製造方法が提供される。In a specific embodiment, the inner layer wet paper made mainly of wood pulp and the expandable particles is sandwiched between two surface layer wet papers made mainly of wood pulp and then laminated. Thereafter, the expandable particles are heated and expanded, and the density of the two surface layers is 0.65 to 0.95 g / cm.
Third , there is provided a method for producing a file holder paper, wherein the method is heated and dried so that the density of the inner layer portion is 0.2 to 0.5 g / cm 3 .
【００１３】ここで、前記発泡性粒子としては、発泡性
マイクロカプセルを使用することが好ましい。この発泡
性マイクロカプセルとしては、平均粒径が5〜30μｍ
で、80〜200℃での加熱により直径が4〜5倍、体積が50
〜130倍に膨張するマイクロカプセルが好適で、前記内
層部湿紙の絶乾坪量換算重量に対し、1〜30重量％含有
することが望ましい。Here, as the expandable particles, it is preferable to use expandable microcapsules. This foamable microcapsule has an average particle size of 5 to 30 μm
In heating at 80-200 ° C, the diameter is 4-5 times and the volume is 50
A microcapsule which expands up to 130 times is preferable, and preferably contains 1 to 30% by weight based on the absolute dry basis weight of the inner layer wet paper.
【００１４】本発明における密度は、ファイル用紙の寸
法に仕上げ、断裁した後の用紙の密度を指し、密度は23
℃ 50％RH環境下で、JIS.P8118に従って測定したもの
である。なお、この密度は勿論ホルダー用紙についても
同様である。密度の調整は、熱発泡粒子または発泡性粒
子の配合率、製造時のプレスパート、仕上カレンダー処
理時のプレス圧力を調整することで制御できる。In the present invention, the density refers to the density of a sheet after finishing and cutting to the size of a file sheet.
Measured in accordance with JIS.P8118 under an environment of 50 ° C and 50% RH. Note that this density is also the same for holder paper. The density can be adjusted by adjusting the blending ratio of the thermally expanded particles or expandable particles, the press part at the time of production, and the press pressure at the time of finishing calendering.
【００１５】[0015]
【発明の実施の形態】本発明に係るファイル及びホルダ
ー用紙は、少なくとも表層部と内層部とを有する複層構
造の用紙であって、前記表層部は、コシを出すためファ
イル及びホルダー用紙としての通常の密度層、具体的に
は0.65〜0.90g/cm3の密度層となっており、一方前記内
層部は、熱発泡粒子を含有することで植物繊維使用量を
低減した低密度層、具体的には0.2〜0.5g/cm3の層とな
っている。BEST MODE FOR CARRYING OUT THE INVENTION A file and holder sheet according to the present invention is a sheet having a multi-layer structure having at least a surface layer and an inner layer, wherein the surface layer is used as a file and holder sheet for producing stiffness. A normal density layer, specifically, a density layer of 0.65 to 0.90 g / cm 3 , while the inner layer portion is a low density layer in which the amount of plant fiber used is reduced by containing thermally expanded particles, specifically, Typically, it is a layer of 0.2 to 0.5 g / cm 3 .
【００１６】前記ファイル及びホルダー用紙の表層部
は、密度0.65〜0.90g/cm3好ましくは0.65〜0.80g/cm3と
して仕上げられている。表層部の密度が、0.65g/cm3未
満では、内層部のコシのない部分を十分に支えることが
できず、実用上コシに問題のあるものとなり、密度が0.
90g/cm3を超えると、多層抄き紙の場合、製造工程の乾
燥過程で、内層部に含まれる水分が蒸発する際、高密度
の表層部を抜け切れず、内部に気泡となる、いわゆるふ
くれという現象が発生するようになる。The surface layer of the file and the holder paper is finished with a density of 0.65 to 0.90 g / cm 3, preferably 0.65 to 0.80 g / cm 3 . Density of the surface layer portion is less than 0.65 g / cm 3, can not support the stiffness portion without an inner layer portion sufficiently, it is assumed that a problem in practical stiffness, density 0.
Exceeds 90 g / cm 3, when the multi-made paper, in the drying process of the manufacturing process, when the moisture contained in the inner layer portion evaporates, not fully escape the high density of the surface layer portion, the voids inside, so The phenomenon of blistering occurs.
【００１７】一方、内層部は密度0.2〜0.5g/cm3、好ま
しくは0.3〜0.4g/cm３として仕上げられている。密度が
0.2g/cm3未満では、各層間の強度が著しく低下し、ファ
イル製品として使用した際、紙のめくれが短期間で発生
することがある。一方、密度が0.5g/cm3以上であると植
物繊維の使用量を減らすことができず、本発明の目的を
果たすことができない。Meanwhile, the inner layer portion has a density 0.2-0.5 g / cm 3, preferably are finished as 0.3~0.4g / cm 3. Density
If it is less than 0.2 g / cm 3 , the strength between the layers is significantly reduced, and when used as a file product, the paper may be turned over in a short period of time. On the other hand, if the density is 0.5 g / cm 3 or more, the amount of plant fiber used cannot be reduced, and the object of the present invention cannot be achieved.
【００１８】本発明のファイル・ホルダー用紙は一般に
は、表層部と、熱発泡粒子を含む内層部とで構成されて
いるが、この場合、内層部中の熱発泡粒子は層全体に均
一して分散されていてもよいが、内層部の熱発泡粒子を
相対的に表層部側に多く偏在させるようにして、抄合わ
せることもできる。こうすることによって内層部表面側
は抄合わせられた表層部の密度に近い密度となり、ファ
イル・ホルダー用紙全体のコシが強くなる。The file holder paper of the present invention is generally composed of a surface layer portion and an inner layer portion containing thermally expanded particles. In this case, the thermally expanded particles in the inner layer portion are uniformly distributed over the entire layer. Although they may be dispersed, they can be combined by distributing the thermally foamed particles in the inner layer relatively to the surface layer relatively more. By doing so, the inner layer portion surface side has a density close to the density of the combined surface layer portion, and the stiffness of the entire file holder paper is increased.
【００１９】また、本発明のファイル・ホルダー用紙
は、層全体に熱発泡粒子を均一に分散した内層部を2つ
の表層部（上部表層部、下部表層部）でサンドイッチす
るように多層抄きして得られたものであってもよい。こ
の場合において、2つの表層部はそれらが密度0.65〜0.9
0g/cm3の条件を充す範囲であれば、それぞれが異なった
密度をもって構成されていてもよい。さらに、本発明の
ファイル・ホルダー用紙は表層部、内層部がそれぞれの
密度を維持していれば、複数層の多層抄き用紙であって
もよい。Further, the file holder paper of the present invention is prepared by multilayering the inner layer portion in which the thermally foamed particles are uniformly dispersed throughout the entire layer so that the inner layer portion is sandwiched between two surface portions (upper surface portion and lower surface portion). It may be obtained by using In this case, the two superficial parts have a density of 0.65-0.9
As long as the range satisfies the condition of 0 g / cm 3 , each may have a different density. Further, the file holder paper of the present invention may be a multi-layered multi-layer paper as long as the surface layer and the inner layer maintain their respective densities.
【００２０】以上のように、本発明では、厚さ方向に密
度の違う層を設けているが、全層に熱発泡粒子を含む層
とすると、熱発泡粒子の樹脂の影響で、表層部の摩擦抵
抗が大きくなり、枚葉の用紙からファイル・ホルダーの
形態に打ち抜き加工を行う際、打ち抜き加工機械フィー
ド部での滑りが悪く、ファイル・ホルダー用紙として実
用的でないものとなる。表層部に摩擦抵抗を大きくしな
い程度に熱発泡粒子を配合することも可能であるが、前
記打ち抜き加工機械フィード部での滑り性および経済的
観点からはあまり好ましくない。As described above, in the present invention, layers having different densities are provided in the thickness direction. However, if all layers are made of layers containing thermally expanded particles, the surface layer portion is affected by the resin of the thermally expanded particles. The frictional resistance increases, and when punching a sheet of paper into the form of a file holder, slippage at the feed section of the punching machine is poor, which is not practical as a file holder paper. It is possible to mix the thermally foamed particles in the surface layer so as not to increase the frictional resistance, but it is not preferable from the viewpoint of the slipperiness at the feed portion of the punching machine and the economy.
【００２１】本発明に使用される植物繊維としては、広
葉樹晒クラフトパルプ、針葉樹晒クラフトパルプ、広葉
樹未晒クラフトパルプ、針葉樹未晒クラフトパルプ、広
葉樹亜硫酸パルプ、針葉樹亜硫酸パルプ、等木材繊維を
含む主原料として、化学的に処理されたパルプ、木材以
外の繊維原料であるケナフ、麻、葦等非木材繊維を主原
料として化学的に処理されたパルプやチップを機械的に
パルプ化したグランドパルプ、木材又はチップに化学薬
品を添加しながら機械的にパルプ化したケミグランドパ
ルプ、及びチップを柔らかくなるまで蒸解した後、レフ
ファイナー等でパルプ化したセシケミカルパルプ等のバ
ージンパルプ及びクラフトパルプ、セシケミカルパル
プ、酵素漂白パルプを含むオフィス上物古紙を脱墨、漂
白したパルプ、牛乳パック古紙上質断裁落ち古紙、コー
ト断裁落ち古紙、上白、特白、中白等未印刷の古紙から
得られる回収パルプ等があげられる。The plant fibers used in the present invention include wood fibers such as hardwood bleached kraft pulp, softwood bleached kraft pulp, hardwood unbleached kraft pulp, softwood unbleached kraft pulp, hardwood sulfite pulp, and softwood sulfite pulp. As raw materials, chemically treated pulp, fiber pulp other than wood, such as kenaf, hemp, reeds, etc. Virgin pulp and kraft pulp, such as chem ground pulp, which is mechanically pulped while adding chemicals to wood or chips, and sesame chemical pulp, which is pulped with a reffiner, etc., after the chips are softened Deinked and bleached pulp, bleached pulp, milk from office-grade waste paper including enzyme-bleached pulp Click paper quality cut-off waste paper, coat cut-off waste paper, white superior soft, Tokushiro, the recovery pulp obtained from the medium such as white unprinted waste paper and the like.
【００２２】又、上質植物繊維にポリエチレン、ポリプ
ロピレン等を原料とした、合成パルプ等を組み合わせた
ものや、合成パルプの他にもレーヨン繊維、アクリル繊
維、ポリアミド繊維等の有機繊維、ガラス繊維、炭素繊
維等の各種繊維を配合することは可能であるが、内層部
は熱発泡粒子の歩留りを考慮すると、植物繊維が50重量
%以上で構成され、特に100重量%で構成されたものが、
熱発泡粒子の歩留りが良く、発明の効果が高い。In addition, synthetic pulp or the like made of high quality plant fiber made of polyethylene, polypropylene or the like, or organic fiber such as rayon fiber, acrylic fiber, polyamide fiber, glass fiber, carbon fiber, etc. It is possible to mix various fibers such as fibers, but the inner layer is 50% by weight of plant fibers in consideration of the yield of the thermally expanded particles.
%, Especially those composed of 100% by weight,
The yield of the thermally expanded particles is good, and the effect of the invention is high.
【００２３】内層部における熱発泡粒子の配合量は、内
層部の植物繊維100重量部に対して、1〜20重量部、好ま
しくは3〜20重量部である。1重量部未満では低密度化へ
の効果が殆んどなく、20重量部を超える場合には紙層間
強度の低下があるとともに、経済性の面で劣る。The amount of the thermally expanded particles in the inner layer is 1 to 20 parts by weight, preferably 3 to 20 parts by weight, based on 100 parts by weight of the plant fiber in the inner layer. If it is less than 1 part by weight, there is almost no effect on lowering the density, and if it exceeds 20 parts by weight, the paper interlayer strength is reduced and the economic efficiency is poor.
【００２４】植物繊維中には、熱発泡粒子以外の薬品と
して、一般のファイル用紙、ホルダー用紙に使用され
る、各種の歩留り向上剤、紙力増強剤、サイズ剤、填
料、染料、顔料等が目的に応じ、適宜選択として使用さ
れる。又、ファイル・ホルダー用紙の表面強度を向上さ
せる為に使用される塗工薬品として、PVA、澱粉がある
が、これらは本発明のファイル・ホルダー用紙にも適用
される。In the plant fiber, various kinds of retention improvers, paper strength enhancers, sizing agents, fillers, dyes, pigments and the like, which are used for general file paper and holder paper, are used as chemicals other than the thermally expanded particles. It is used as an appropriate selection depending on the purpose. Further, as coating chemicals used for improving the surface strength of the file holder paper, there are PVA and starch, which are also applied to the file holder paper of the present invention.
【００２５】上記の本発明のファイル・ホルダー用紙
は、木材パルプ（植物繊維）を主成分とし、表層部を構
成するための水分率60〜80重量％の湿紙と、木材パルプ
及び発泡性粒子を主成分とし、内層部を構成するための
水分率60〜80重量％の湿紙とを抄合わせ、これを例えば
ドライヤーに密着させて発泡性粒子を発泡させるととも
に、表層部の密度を0.65〜0.90g/cm3、内層部の密度を
0.2〜0.5g/cm3になるように加熱乾燥して二層抄き用紙
を製造する。The above file holder paper of the present invention comprises a wet paper having wood pulp (vegetable fiber) as a main component and a moisture content of 60 to 80% by weight for forming a surface layer, wood pulp and expandable particles. As a main component, and a wet paper having a moisture content of 60 to 80% by weight for forming the inner layer portion is combined, and this is brought into close contact with, for example, a dryer to foam the expandable particles, and the density of the surface layer portion is set to 0.65 to 0.90 g / cm 3 , inner layer density
It is dried by heating to 0.2 to 0.5 g / cm 3 to produce a two-layer paper.
【００２６】また、この2つの紙層の抄き合わせで本発
明のファイル・ホルダー用紙を製造する場合には、水分
率60〜80重量％に調整された湿紙に、発泡性粒子の分散
液をスプレー塗布し、発泡性粒子が前記湿紙の厚さ方向
でかつ紙層内に分布された状態の発泡性粒子含有湿紙
（内層部を構成する湿紙）を作り、この内層部を構成す
る湿紙の発泡性粒子の分布が多い側を、表層部を構成す
る湿紙にあてるようにして抄き合わせ、これを例えばド
ライヤーに密着させて、発泡性粒子を加熱発泡させると
ともに、表層部の密度を0.65〜0.90g/cm3、内層部の密
度を0.2〜0.5g/cm3になるように加熱乾燥して2層抄き用
紙を製造することができる。この方法によれば、表裏両
面で密度の高いファイル・ホルダー用紙が製造できる。When the file holder paper of the present invention is manufactured by combining these two paper layers, a dispersion of the expandable particles is added to a wet paper adjusted to a water content of 60 to 80% by weight. Is spray-coated to form a foamable particle-containing wet paper (wet paper constituting the inner layer portion) in a state where the expandable particles are distributed in the thickness direction of the wet paper and in the paper layer, and the inner layer portion is formed. The side of the wet paper to which the expandable particles are distributed is applied to the wet paper constituting the surface layer so as to be applied to the wet paper, and this is brought into close contact with, for example, a drier, and the expandable particles are heated and foamed. density 0.65~0.90g / cm 3, it is possible to produce a sheet paper making dried by heating two layers so that the density of the inner layer portion to 0.2-0.5 g / cm 3. According to this method, a high density file holder paper can be manufactured on both sides.
【００２７】本発明のファイル・ホルダー用紙は、表層
部／内層部／表層部の3層構成で製造することもでき
る。この製造方法は、各湿紙を3層抄合せて行なうとい
うだけで、抄紙の方法自体は前記と同様である。ただ
し、この場合は内層部を構成する湿紙は紙層全体に発泡
性粒子が含有されていてよく、従って、この湿紙は紙料
中の発泡性粒子を分散させたものを用いることができ
る。さらに、４層以上の多層抄き紙で、本ファイル・ホ
ルダー用紙を作成してもよいことは前記のとおりであ
る。The file holder paper of the present invention can be manufactured in a three-layer structure of a surface layer / inner layer / surface layer. This manufacturing method is the same as that described above, except that each wet paper is subjected to three-layer bonding. However, in this case, the wet paper web constituting the inner layer portion may contain the expandable particles in the entire paper layer, and therefore, this wet paper can be used in which the expandable particles in the paper stock are dispersed. . Further, as described above, the file holder paper may be made of a multilayer paper having four or more layers.
【００２８】本発明に使用する発泡性粒子は、マイクロ
カプセル内に低沸点溶剤を封入した熱膨張性マイクロカ
プセルである。このカプセルは、80〜200℃の温度での
加熱により、体積が50〜100倍に膨張する平均粒径5〜30
μｍの粒子である。The expandable particles used in the present invention are heat-expandable microcapsules in which a low-boiling solvent is encapsulated in microcapsules. This capsule has an average particle size of 5 to 30 whose volume expands 50 to 100 times by heating at a temperature of 80 to 200 ° C.
μm particles.
【００２９】本発明で使用する発泡性マイクロカプセル
は、前記したように、熱可塑性合成樹脂の微細粒子外殻
内に低沸点溶剤を封入したもので、平均粒径が5〜130倍
に膨張するものである。外殻を構成する熱可塑性合成樹
脂としては、通常、塩化ビニリデン、アクリロニトリ
ル、アクリル酸エステル、メタクリル酸エステル等の共
重合体が使用され、低沸点ハロゲン化炭化水素、メチル
シラン等が使用できる。As described above, the foamable microcapsules used in the present invention are obtained by encapsulating a low-boiling solvent in the outer shell of fine particles of a thermoplastic synthetic resin, and have an average particle diameter of 5 to 130 times. Things. As the thermoplastic synthetic resin constituting the outer shell, copolymers such as vinylidene chloride, acrylonitrile, acrylates, and methacrylates are usually used, and low-boiling halogenated hydrocarbons, methylsilane, and the like can be used.
【００３０】前記発泡性マイクロカプセルは、外殻を構
成する熱可塑性合成樹脂の軟化点以上に加熱され、同時
に封入されている低沸点溶剤が気化し蒸気圧が上昇し、
外殻が膨張して独立気泡が形成する。The foamable microcapsules are heated to a temperature higher than the softening point of the thermoplastic synthetic resin constituting the outer shell, and at the same time, the enclosed low-boiling solvent evaporates and the vapor pressure increases.
The outer shell expands to form closed cells.
【００３１】発泡性マイクロカプセルとしては、松本油
脂製薬（株）のマツモトクロスフェアーF−30D、同F−3
0GS、F−20D、F−50D、F−80Dや、日本フィライト
（株）のエクスパンセルWU、同DU等が知られているが、
これに限るものではない。Examples of the effervescent microcapsules include Matsumoto Oils and Fats Co., Ltd. Matsumoto Crosssphere F-30D and F-3.
0GS, F-20D, F-50D, F-80D, and Expancel WU and Nippon Philite Co., Ltd. are known,
It is not limited to this.
【００３２】本発明の製造方法において、多層抄き紙と
する為には、円網多層抄紙機ウルトラフォーマー多層抄
紙機、ベルボンドフォーマー多層抄紙機等が使用でき
る。In the production method of the present invention, in order to produce a multilayer paper, a circular web multilayer paper machine, an ultraformer multilayer paper machine, a bell bond former multilayer paper machine and the like can be used.
【００３３】上記ワイヤーパートで表層部と内層部を重
ね合わせた原料を乾燥させる方法として、ヤンキードラ
イヤー、多筒ドライヤー、熱風ドライヤー、赤外線ドラ
イヤー等が使用できる。As a method for drying the raw material in which the surface layer portion and the inner layer portion are overlapped by the wire part, a Yankee dryer, a multi-cylinder dryer, a hot air dryer, an infrared dryer, or the like can be used.
【００３４】本発明におけるファイル・ホルダー用紙の
米坪は、100g/ｍ２〜300g/ｍ２であり、実用性、生産性
の点で好ましくは、150g/ｍ２〜250g/ｍ２である。ま
た、表層部と内層部の米坪比率は、１〜３．５：１であ
り、所望の紙厚により適宜設定される。The basis weight of the file holder sheet in the present invention is a 100g / m 2 ~300g / m 2 , practicality, in preferred terms of productivity, it is 150g / m 2 ~250g / m 2 . Further, the ratio of the surface area to the inner layer of the rice is from 1 to 3.5: 1, which is appropriately set according to the desired paper thickness.
【００３５】[0035]
【実施例】以下に実施例をあげて本発明を具体的に説明
するが、もちろん本発明はこれによって限定されるもの
ではない。なお、ここでの部は重量基準である。EXAMPLES The present invention will be described in more detail with reference to the following examples, which, of course, are not intended to limit the scope of the present invention. The parts here are based on weight.
【００３６】〔実施例1〕広葉樹晒クラフトパルプ70部
（絶乾米坪換算、以下同じ）及び針葉樹晒クラフトパル
プ30部からなるパルプに、乾燥紙力増強剤（商品名：ポ
リアクロン、ミサワセラミックス（株）製）1部、湿潤
紙力増強剤（商品名：WS525、日本PMC（株）製）0.5
部、硫酸バンド5部、ロジンサイズ剤（商品名：AL-12
2、日本PMC（株）製）0.5部を添加し、水分率を75％に
調整して表層部形成用の湿紙を調製した。Example 1 A pulp consisting of 70 parts of hardwood bleached kraft pulp (converted to absolute dry rice tsubo, the same applies hereinafter) and 30 parts of softwood bleached kraft pulp was added to a dry paper strength agent (trade names: Polyaclon, Misawa Ceramics ( Co., Ltd.) 1 part, wet paper strength agent (trade name: WS525, manufactured by Japan PMC Co., Ltd.) 0.5
Part, 5 parts of sulfuric acid band, rosin sizing agent (Product name: AL-12
2, 0.5 parts of Nippon PMC Co., Ltd.) was added, and the moisture content was adjusted to 75% to prepare a wet paper for forming a surface layer portion.
【００３７】一方、上白古紙80部及び切茶古紙20部から
なる古紙に、乾燥紙力増強剤（商品名：ポリストレロ
ン、荒川化学（株）製）1部、湿潤紙力増強剤（商品
名：WS525、日本PMC（株）製）0.5部、硫酸バンド5部、
ロジンサイズ剤（商品名：AL-122、日本PMC（株）製）
0.5部、を発泡性マイクロカプセル（商品名：マツモト
マイクロフェアー F-30、平均粒径17μｍ、外殻の軟化
温度80℃、松本油脂製薬（株）製）３部を添加し、水分
率を75％に調整して内層部形成用の発泡性粒子含有の湿
紙を調製した。On the other hand, 1 part of a dry paper strength enhancer (trade name: Poristrelon, manufactured by Arakawa Chemical Co., Ltd.) and a wet paper strength enhancer (trade name) : WS525, manufactured by Nippon PMC Co., Ltd.) 0.5 part, sulfate band 5 parts,
Rosin sizing agent (trade name: AL-122, manufactured by PMC Japan)
0.5 parts of foaming microcapsules (trade name: Matsumoto Microsphere F-30, average particle size 17 μm, outer shell softening temperature 80 ° C., manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.) are added, and the water content is reduced to 75. % To prepare a wet paper containing expandable particles for forming the inner layer portion.
【００３８】これら湿紙を用い、表層部の密度が0.90g/
cm3、内部層の密度が0.50g/cm3になるように円網多層抄
紙機で抄き合せ、米坪280g/m2の表層部−内層部からな
る2層構成のファイル用紙を得た。Using these wet papers, the density of the surface layer was 0.90 g /
cm 3 , the density of the inner layer was 0.50 g / cm 3, and it was combined with a circular mesh multi-layer paper machine to obtain a file paper having a two-layer structure consisting of a surface layer portion of 280 g / m 2 and an inner layer portion. .
【００３９】このファイル用紙の層間強度は、ミューレ
ン型破裂試験機（東洋精機製（株））で測定した結果、
0.98Mpaであり、剛度はテーパー剛度測定機（東洋精機
製（株））で測定し、測定値は32mNmであり、ファイル
用紙としての紙質を満足するものであった。また、用紙
を打ち抜き加工した結果、用紙の紙詰まり、２重送り等
もなく、加工適性上問題なく、ファイル製品の形に成型
できるものであった。これらの結果をまとめて表1に示
す。The interlaminar strength of the file paper was measured by a Mullen-type burst tester (manufactured by Toyo Seiki Co., Ltd.).
The stiffness was measured with a taper stiffness measuring device (manufactured by Toyo Seiki Co., Ltd.), and the measured value was 32 mNm, satisfying the paper quality as file paper. In addition, as a result of punching the paper, there was no paper jam, double feed, etc., and there was no problem in processing suitability, and it could be formed into a file product shape. The results are summarized in Table 1.
【００４０】〔実施例2〕広葉樹晒クラフトパルプ70部
及び針葉樹晒クラフトパルプ30部からなるパルプに、乾
燥紙力増強剤（商品名：ポリアクロン、ミサワセラミッ
クス（株）製）1部、湿潤紙力増強剤（商品名：WS525、
日本PMC（株）製）0.5部、硫酸バンド5部、ロジンサイ
ズ剤（商品名：AL-122、日本PMC（株）製）0.5部を添加
し、水分率を75％に調整して表層部形成用の湿紙を調製
した。Example 2 A pulp consisting of 70 parts of hardwood bleached kraft pulp and 30 parts of softwood bleached kraft pulp, 1 part of a dry paper strength agent (trade name: Polyaclon, manufactured by Misawa Ceramics Co., Ltd.), wet paper strength Enhancer (trade name: WS525,
Add 0.5 parts of Nippon PMC Co., Ltd., 5 parts of sulfuric acid band, 0.5 part of rosin sizing agent (trade name: AL-122, manufactured by Nippon PMC Co., Ltd.), adjust the moisture content to 75%, and adjust the surface layer A wet paper for forming was prepared.
【００４１】一方、上白古紙80部及び切茶古紙20部から
なる古紙に、乾燥紙力増強剤（商品名：ポリストレロ
ン、荒川化学（株）製）1部、湿潤紙力増強剤（商品
名：WS525、日本PMC（株）製）0.5部、硫酸バンド5部、
ロジンサイズ剤（商品名：AL-122、日本PMC（株）製）
0.5部、を発泡性マイクロカプセル（商品名：マツモト
マイクロフェアーF-30、平均粒径17μｍ、外殻の軟化温
度80℃、松本油脂製薬（株）製）10部を添加し、水分率
を75％に調整して内層部形成用の発泡性粒子含有の湿紙
を調製した。On the other hand, 1 part of a dry paper strength enhancer (trade name: Poristrelon, manufactured by Arakawa Chemical Co., Ltd.) and a wet paper strength enhancer (trade name) : WS525, manufactured by Nippon PMC Co., Ltd.) 0.5 part, sulfate band 5 parts,
Rosin sizing agent (trade name: AL-122, manufactured by PMC Japan)
0.5 parts, 10 parts of expandable microcapsules (trade name: Matsumoto Microsphere F-30, average particle size 17 μm, outer shell softening temperature 80 ° C., manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.) are added, and the water content is reduced to 75. % To prepare a wet paper containing expandable particles for forming the inner layer portion.
【００４２】これら湿紙を用い、表層部の密度が0.70g/
cm3、内部層の密度が0.35g/cm3になるように円網多層抄
紙機で抄き合せ、米坪231g/m2の表層部−内層部からな
る2層構成のファイル用紙を得た。Using these wet papers, the density of the surface layer was 0.70 g /
cm 3 , the density of the inner layer was 0.35 g / cm 3 , and the mixture was machined with a circular-mesh multilayer paper machine to obtain a file paper having a two-layer structure consisting of a surface layer portion and an inner layer portion of 231 g / m 2 in U.S.A. .
【００４３】このファイル用紙の層間強度は、0.91Mp
a、剛度は30mNmであり、ファイル用紙としての紙質を満
足するものであった。また、用紙を打ち抜き加工した結
果、加工適性上問題ないものであった。これらの結果を
まとめて表1に示す。The interlayer strength of this file paper is 0.91 Mp
a, The stiffness was 30 mNm, satisfying the paper quality as file paper. Further, as a result of punching the paper, there was no problem in processing suitability. The results are summarized in Table 1.
【００４４】〔実施例3〕広葉樹晒クラフトパルプ70部
及び針葉樹晒クラフトパルプ30部からなるパルプに、乾
燥紙力増強剤（商品名：ポリアクロン、ミサワセラミッ
クス（株）製）1部、湿潤紙力増強剤（商品名：WS525、
日本PMC（株）製）0.5部、硫酸バンド5部、ロジンサイ
ズ剤（商品名：AL-122、日本PMC（株）製）0.5部を添加
し、水分率を75％に調整して表層部形成用の湿紙を調製
した。Example 3 Pulp consisting of 70 parts of hardwood bleached kraft pulp and 30 parts of softwood bleached kraft pulp, 1 part of a dry paper strength agent (trade name: Polyaclon, manufactured by Misawa Ceramics Co., Ltd.), wet paper strength Enhancer (trade name: WS525,
Add 0.5 parts of Nippon PMC Co., Ltd., 5 parts of sulfuric acid band, 0.5 part of rosin sizing agent (trade name: AL-122, manufactured by Nippon PMC Co., Ltd.), adjust the moisture content to 75%, and adjust the surface layer A wet paper for forming was prepared.
【００４５】一方、上白古紙80部及び切茶古紙20部から
なる古紙に、乾燥紙力増強剤（商品名：ポリストレロ
ン、荒川化学（株）製）1部、湿潤紙力増強剤（商品
名：WS525、日本PMC（株）製）0.5部、硫酸バンド5部、
ロジンサイズ剤（商品名：AL-122、日本PMC（株）製）
0.5部、を発泡性マイクロカプセル（商品名：マツモト
マイクロフェアーF-30、平均粒径17μｍ、外殻の軟化温
度80℃、松本油脂製薬（株）製）20部を添加し、水分率
を60％に調整して内層部形成用の発泡性粒子含有の湿紙
を調製した。On the other hand, 1 part of a dry paper strength enhancer (trade name: Poristrelon, manufactured by Arakawa Chemical Co., Ltd.) and a wet paper strength enhancer (trade name) : WS525, manufactured by Nippon PMC Co., Ltd.) 0.5 part, sulfate band 5 parts,
Rosin sizing agent (trade name: AL-122, manufactured by PMC Japan)
Add 0.5 parts of effervescent microcapsules (trade name: Matsumoto Microsphere F-30, average particle diameter 17 μm, outer shell softening temperature 80 ° C., manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.), and adjust the water content to 60. % To prepare a wet paper containing expandable particles for forming the inner layer portion.
【００４６】これら湿紙を用い、表層部の密度が0.67g/
cm3、内部層の密度が0.21g/cm3になるように円網多層抄
紙機で抄き合せ、米坪181g/m2の表層部−内層部からな
る2層構成のファイル用紙を得た。Using these wet papers, the density of the surface layer was 0.67 g /
cm 3, the density of the inner layer is combined paper making in Enmo multilayer paper machine so that the 0.21 g / cm 3, the surface portion of the basis weight 181 g / m 2 - give the file sheet having a two-layer structure consisting of an inner layer portion .
【００４７】このファイル用紙の層間強度は、0.85Mp
a、剛度は27mNmであり、ファイル用紙としての紙質を満
足するものであった。また、用紙を打ち抜き加工した結
果、加工適性上問題ないものであった。これらの結果を
まとめて表1に示す。The interlayer strength of this file paper is 0.85 Mp
a, The stiffness was 27 mNm, satisfying the paper quality as file paper. Further, as a result of punching the paper, there was no problem in processing suitability. The results are summarized in Table 1.
【００４８】〔実施例４〕広葉樹晒クラフトパルプ70部
（絶乾米坪換算、以下同じ）及び針葉樹晒クラフトパル
プ30部からなるパルプに、乾燥紙力増強剤（商品名：ポ
リアクロン、ミサワセラミックス（株）製）1部、湿潤
紙力増強剤（商品名：WS525、日本PMC（株）製）0.5
部、硫酸バンド5部、ロジンサイズ剤（商品名：AL-12
2、日本PMC（株）製）0.5部、発泡性マイクロカプセル
（商品名：マツモトマイクロフェアー F-30、平均粒径
17μｍ、外殻の軟化温度80℃、松本油脂製薬（株）製）
1部を添加し、水分率を75％に調整して表層部形成用の
湿紙を調製した。Example 4 A pulp consisting of 70 parts of hardwood bleached kraft pulp (absolutely dry rice tsubo conversion, the same applies hereinafter) and 30 parts of softwood bleached kraft pulp was added to a dry paper strength enhancer (trade names: Polyaclon, Misawa Ceramics ( Co., Ltd.) 1 part, wet paper strength agent (trade name: WS525, manufactured by Japan PMC Co., Ltd.) 0.5
Part, 5 parts of sulfuric acid band, rosin sizing agent (Product name: AL-12
2, 0.5 parts by PMC Japan, foamable microcapsules (trade name: Matsumoto Microsphere F-30, average particle size)
17 μm, softening temperature of outer shell 80 ° C, manufactured by Matsumoto Yushi Seiyaku Co., Ltd.)
One part was added, and the moisture content was adjusted to 75% to prepare a wet paper for forming a surface layer portion.
【００４９】一方、上白古紙80部及び切茶古紙20部から
なる古紙に、乾燥紙力増強剤（商品名：ポリストレロ
ン、荒川化学（株）製）1部、湿潤紙力増強剤（商品
名：WS525、日本PMC（株）製）0.5部、硫酸バンド5部、
ロジンサイズ剤（商品名：AL-122、日本PMC（株）製）
0.5部、発泡性マイクロカプセル（商品名：マツモトマ
イクロフェアー F-30、平均粒径17μｍ、外殻の軟化温
度80℃、松本油脂製薬（株）製）10部を添加し、水分率
を75％に調整して内層部形成用の発泡性粒子含有の湿紙
を調製した。On the other hand, 1 part of a dry paper strength enhancer (trade name: Poristrelon, manufactured by Arakawa Chemical Co., Ltd.) and a wet paper strength enhancer (trade name) : WS525, manufactured by Nippon PMC Co., Ltd.) 0.5 part, sulfate band 5 parts,
Rosin sizing agent (trade name: AL-122, manufactured by PMC Japan)
0.5 parts, 10 parts of expandable microcapsules (trade name: Matsumoto Microsphere F-30, average particle size 17 μm, outer shell softening temperature 80 ° C, manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.) are added, and the water content is 75%. To prepare an wettable paper containing expandable particles for forming the inner layer.
【００５０】これら湿紙を用い、表層部の密度が0.65g/
cm3、内部層の密度が0.35g/cm3になるように円網多層抄
紙機で抄き合せ、米坪234g/m2の表層部−内層部からな
る2層構成のファイル用紙を得た。Using these wet papers, the density of the surface layer was 0.65 g /
cm 3 , the density of the inner layer was 0.35 g / cm 3 , which was then combined with a circular-mesh multilayer paper machine to obtain a file paper having a two-layer structure consisting of a surface layer portion and an inner layer portion of 234 g / m 2 in rice tsubo. .
【００５１】このファイル用紙の層間強度は、0.92Mp
a、剛度は29mNmであり、ファイル用紙としての紙質を満
足するものであった。また、表層部に配合した熱発泡粒
子の影響を受けることなく、加工適性上は問題ないもの
であった。これらの結果をまとめて表1に示す。The interlayer strength of this file paper is 0.92 Mp
a, The stiffness was 29 mNm, satisfying the paper quality as file paper. In addition, there was no problem in processability without being affected by the thermally expanded particles blended in the surface layer portion. The results are summarized in Table 1.
【００５２】[0052]
【表１】 [Table 1]
【００５３】〔比較例1〕広葉樹晒クラフトパルプ70部
（絶乾米坪換算、以下同じ）及び針葉樹晒クラフトパル
プ30部からなるパルプに、乾燥紙力増強剤（商品名：ポ
リアクロン、ミサワセラミックス（株）製）1部、湿潤
紙力増強剤（商品名：WS525、日本PMC（株）製）0.5
部、硫酸バンド5部、ロジンサイズ剤（商品名：AL-12
2、日本PMC（株）製）0.5部を添加し、水分率を75％に
調整して表層部形成用の湿紙を調製した。[Comparative Example 1] A pulp consisting of 70 parts of hardwood bleached kraft pulp (converted to absolute dry rice tsubo, the same applies hereinafter) and 30 parts of softwood bleached kraft pulp was added to a dry paper strength agent (trade names: Polyaclon, Misawa Ceramics ( Co., Ltd.) 1 part, wet paper strength agent (trade name: WS525, manufactured by Japan PMC Co., Ltd.) 0.5
Part, 5 parts of sulfuric acid band, rosin sizing agent (Product name: AL-12
2, 0.5 parts of Nippon PMC Co., Ltd.) was added, and the moisture content was adjusted to 75% to prepare a wet paper for forming a surface layer portion.
【００５４】一方、上白古紙80部及び切茶古紙20部から
なる古紙に、乾燥紙力増強剤（商品名：ポリストレロ
ン、荒川化学（株）製）1部、湿潤紙力増強剤（商品
名：WS525、日本PMC（株）製）0.5部、硫酸バンド5部、
ロジンサイズ剤（商品名：AL-122、日本PMC（株）製）
0.5部を添加し、水分率を75％に調整して内層部形成用
の湿紙を調製した。On the other hand, 1 part of a dry paper strength enhancer (trade name: Poristrelon, manufactured by Arakawa Chemical Co., Ltd.) and a wet paper strength enhancer (trade name) : WS525, manufactured by Nippon PMC Co., Ltd.) 0.5 part, sulfate band 5 parts,
Rosin sizing agent (trade name: AL-122, manufactured by PMC Japan)
0.5 parts was added, and the moisture content was adjusted to 75% to prepare a wet paper for forming an inner layer portion.
【００５５】これら湿紙を用い、表層部の密度が0.87g/
cm3、内部層の密度が0.80g/cm3になるように円網多層抄
紙機で抄き合せ、米坪383g/m2の通常市販されているフ
ァイル用紙と同等の用紙を得た。Using these wet papers, the density of the surface layer was 0.87 g /
cm 3, the density of the inner layer is combined paper making in Enmo multilayer paper machine so that the 0.80 g / cm 3, to obtain a comparable paper and file sheet are normal commercial basis weight 383 g / m 2.
【００５６】このファイル用紙の層間強度は、表2に示
すとおりの紙質、加工適性であった。The interlayer strength of the file paper was as shown in Table 2 and the paper quality and workability were appropriate.
【００５７】〔比較例2〕広葉樹晒クラフトパルプ70部
（絶乾米坪換算、以下同じ）及び針葉樹晒クラフトパル
プ30部からなるパルプに、乾燥紙力増強剤（商品名：ポ
リアクロン、ミサワセラミックス（株）製）1部、湿潤
紙力増強剤（商品名：WS525、日本PMC（株）製）0.5
部、硫酸バンド5部、ロジンサイズ剤（商品名：AL-12
2、日本PMC（株）製）0.5部を添加し、水分率を75％に
調整して表層部形成用の湿紙を調製した。Comparative Example 2 A pulp consisting of 70 parts of hardwood bleached kraft pulp (converted to absolute dry rice tsubo, the same applies hereinafter) and 30 parts of softwood bleached kraft pulp was added to a dry paper strength enhancer (trade names: Polyaclon, Misawa Ceramics ( Co., Ltd.) 1 part, wet paper strength agent (trade name: WS525, manufactured by Japan PMC Co., Ltd.) 0.5
Part, 5 parts of sulfuric acid band, rosin sizing agent (Product name: AL-12
2, 0.5 parts of Nippon PMC Co., Ltd.) was added, and the moisture content was adjusted to 75% to prepare a wet paper for forming a surface layer portion.
【００５８】一方、上白古紙80部及び切茶古紙20部から
なる古紙に、乾燥紙力増強剤（商品名：ポリストレロ
ン、荒川化学（株）製）1部、湿潤紙力増強剤（商品
名：WS525、日本PMC（株）製）0.5部、硫酸バンド5部、
ロジンサイズ剤（商品名：AL-122、日本PMC（株）製）
0.5部、を発泡性マイクロカプセル（商品名：マツモト
マイクロフェアーF-30、平均粒径17μｍ、外殻の軟化温
度80℃、松本油脂製薬（株）製）22部を添加し、水分率
を75％に調整して内層部形成用の発泡性粒子含有の湿紙
を調製した。On the other hand, 1 part of a dry paper strength enhancer (trade name: Poristrelon, manufactured by Arakawa Chemical Co., Ltd.) and a wet paper strength enhancer (trade name) : WS525, manufactured by Nippon PMC Co., Ltd.) 0.5 part, sulfate band 5 parts,
Rosin sizing agent (trade name: AL-122, manufactured by PMC Japan)
Add 0.5 parts, 22 parts of effervescent microcapsules (trade name: Matsumoto Microsphere F-30, average particle size 17 μm, outer shell softening temperature 80 ° C., manufactured by Matsumoto Yushi Seiyaku Co., Ltd.), and reduce the water content to 75. % To prepare a wet paper containing expandable particles for forming the inner layer portion.
【００５９】これら湿紙を用い、表層部の密度が0.67g/
cm3、内部層の密度が0.15g/cm3になるように円網多層抄
紙機で抄き合せ、米坪158g/m2の表層部−内層部からな
る2層構成のファイル用紙を得た。Using these wet papers, the density of the surface layer was 0.67 g /
cm 3, the density of the inner layer is combined paper making in Enmo multilayer paper machine so that the 0.15 g / cm 3, the surface portion of the basis weight 158 g / m 2 - give the file sheet having a two-layer structure consisting of an inner layer portion .
【００６０】このファイル用紙の層間強度は、表2に示
すとおり、剛度が低く、層間温度も低い用紙であり、フ
ァイル用紙には不適であった。As shown in Table 2, the interlayer strength of this file sheet was low in rigidity and low in interlayer temperature, and was unsuitable for file sheet.
【００６１】〔比較例3〕広葉樹晒クラフトパルプ70部
及び針葉樹晒クラフトパルプ30部からなるパルプに、乾
燥紙力増強剤（商品名：ポリアクロン、ミサワセラミッ
クス（株）製）1部、湿潤紙力増強剤（商品名：WS525、
日本PMC（株）製）0.5部、硫酸バンド5部、ロジンサイ
ズ剤（商品名：AL-122、日本PMC（株）製）0.5部、発泡
性マイクロカプセル（商品名：マツモトマイクロフェア
ーF-30、平均粒径17μｍ、外殻の軟化温度80℃、松本油
脂製薬（株）製）3部を添加し、水分率を75％に調整し
て表層部形成用の湿紙を調製した。Comparative Example 3 A pulp consisting of 70 parts of hardwood bleached kraft pulp and 30 parts of softwood bleached kraft pulp, 1 part of a dry paper strength agent (trade name: Polyaclon, manufactured by Misawa Ceramics Co., Ltd.), wet paper strength Enhancer (trade name: WS525,
0.5 parts of Nippon PMC Co., Ltd., 5 parts of sulfate band, rosin sizing agent (trade name: AL-122, 0.5 parts of Nippon PMC Co., Ltd.), 0.5 parts of expandable microcapsules (trade name: Matsumoto Microfair F-30) , An average particle size of 17 µm, a softening temperature of the outer shell of 80 ° C, and 3 parts of Matsumoto Yushi-Seiyaku Co., Ltd.) were added to adjust the moisture content to 75% to prepare a wet paper for forming a surface layer.
【００６２】一方、上白古紙80部及び切茶古紙20部から
なる古紙に、乾燥紙力増強剤（商品名：ポリストレロ
ン、荒川化学（株）製）1部、湿潤紙力増強剤（商品
名：WS525、日本PMC（株）製）0.5部、硫酸バンド5部、
ロジンサイズ剤（商品名：AL-122、日本PMC（株）製）
0.5部、を発泡性マイクロカプセル（商品名：マツモト
マイクロフェアーF-30、平均粒径17μｍ、外殻の軟化温
度80℃、松本油脂製薬（株）製）3部を添加し、水分率
を75％に調整して内層部形成用の発泡性粒子含有の湿紙
を調製した。On the other hand, 1 part of a dry paper strength enhancer (trade name: Poristrelon, manufactured by Arakawa Chemical Co., Ltd.) and a wet paper strength enhancer (trade name) : WS525, manufactured by Nippon PMC Co., Ltd.) 0.5 part, sulfate band 5 parts,
Rosin sizing agent (trade name: AL-122, manufactured by PMC Japan)
0.5 parts, 3 parts of expandable microcapsules (trade name: Matsumoto Microsphere F-30, average particle size 17 μm, outer shell softening temperature 80 ° C., manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.) are added, and the water content is reduced to 75. % To prepare a wet paper containing expandable particles for forming the inner layer portion.
【００６３】これら湿紙を用い、表層部の密度が0.52g/
cm3、内部層の密度が0.51g/cm3になるように円網多層抄
紙機で抄き合せ、米坪304g/m2の表層部−内層部からな
る2層構成のファイル用紙を得た。Using these wet papers, the density of the surface layer was 0.52 g /
cm 3, the density of the inner layer is combined paper making in Enmo multilayer paper machine so that the 0.51 g / cm 3, the surface portion of the basis weight 304g / m 2 - to give a two-layer structure of a file sheet comprising an inner layer portion .
【００６４】このファイル用紙の層間強度は、表2に示
すとおりの紙質、加工適性であり、ファイル用紙には不
適な用紙であった。The interlayer strength of the file sheet was as shown in Table 2 and the sheet quality and workability were suitable, and the sheet was unsuitable for the file sheet.
【００６５】[0065]
【表２】 [Table 2]
【００６６】〈その他の実施例〉 〔実施例5〕広葉樹晒クラフトパルプ70部（絶乾米坪換
算、以下同じ）及び針葉樹晒クラフトパルプ30部からな
るパルプに、乾燥紙力増強剤（商品名：ポリアクロン、
ミサワセラミックス（株）製）1部、湿潤紙力増強剤
（商品名：WS525、日本PMC（株）製）0.5部、硫酸バン
ド5部、ロジンサイズ剤（商品名：AL-122、日本PMC
（株）製）0.5部を添加し、水分率を75％に調整して表
層部形成用の湿紙を調製した。<Other Examples> [Example 5] A pulp comprising 70 parts of hardwood bleached kraft pulp (converted to absolute dry rice tsubo, the same applies hereinafter) and 30 parts of softwood bleached kraft pulp was added to a dry paper strength enhancer (trade name) : Polyaclon,
1 part of Misawa Ceramics Co., Ltd., 0.5 parts of wet paper strength agent (trade name: WS525, manufactured by Nippon PMC Co., Ltd.), 5 parts of sulfuric acid band, rosin sizing agent (trade name: AL-122, PMC of Japan PMC)
0.5 part was added to adjust the moisture content to 75% to prepare a wet paper for forming a surface layer portion.
【００６７】一方、上白古紙80部及び切茶古紙20部から
なる古紙に、乾燥紙力増強剤（商品名：ポリストレロ
ン、荒川化学（株）製）1部、湿潤紙力増強剤（商品
名：WS525、日本PMC（株）製）0.5部、硫酸バンド5部、
ロジンサイズ剤（商品名：AL-122、日本PMC（株）製）
0.5部を添加し、水分量82％の湿紙をつくり、これに発
泡性マイクロカプセル分散液（100部の水に発泡性マイ
クロカプセル（商品名：マツモトマイクロフェアーF-3
0、平均粒径17μｍ、外殻の軟化温度80℃、松本油脂製
薬（株）製）15部をスプレー外添した後、水分率を75％
に調製して内層部形成用の発泡粒子含有湿紙を調製し
た。On the other hand, 1 part of a dry paper strength enhancer (trade name: Poristrelon, manufactured by Arakawa Chemical Co., Ltd.) and a wet paper strength enhancer (trade name) : WS525, manufactured by Nippon PMC Co., Ltd.) 0.5 part, sulfate band 5 parts,
Rosin sizing agent (trade name: AL-122, manufactured by PMC Japan)
Add 0.5 part to make a wet paper with a moisture content of 82%, and add it to a foaming microcapsule dispersion (100 parts water in foaming microcapsules (trade name: Matsumoto Microfair F-3)
0, an average particle size of 17 μm, a shell softening temperature of 80 ° C., 15 parts of Matsumoto Yushi Seiyaku Co., Ltd.
To prepare an expanded particle-containing wet paper for forming the inner layer portion.
【００６８】続いて、表層部湿紙に内層部湿紙の発泡性
マイクロカプセル塗布側をあてがうように、かつ、表層
部の密度が0.90g/cm3、内層部の密度が0.50g/cm3になる
ように、円網多層抄紙機で抄き合わせ、米坪280g/m2の
表層部−内層部からなる2層構成のファイル用紙を得
た。Subsequently, the foamed microcapsule coating side of the inner layer wet paper was applied to the surface layer wet paper, and the density of the surface layer was 0.90 g / cm 3 and the density of the inner layer was 0.50 g / cm 3. To obtain a two-layer file paper having a surface layer portion and an inner layer portion of 280 g / m 2 in U.S. meter.
【００６９】このファイル用紙は、内層部湿紙におい
て、含まれる熱発泡粒子が表層部側に多く偏在している
ものであるが、全紙厚：451μｍ、剛度29mNm、層間強度
0.80Mpaであり、打ち抜き加工適性は良好であった。In this file paper, the heat-expanded particles contained in the inner layer wet paper are unevenly distributed on the surface side, but the total paper thickness is 451 μm, the rigidity is 29 mNm, and the interlayer strength is high.
It was 0.80 Mpa, and the suitability for punching was good.
【００７０】〔実施例6〕広葉樹晒クラフトパルプ70部
（絶乾米坪換算、以下同じ）及び針葉樹晒クラフトパル
プ30部からなるパルプに、乾燥紙力増強剤（商品名：ポ
リアクロン、ミサワセラミックス（株）製）1部、湿潤
紙力増強剤（商品名：WS525、日本PMC（株）製）0.5
部、硫酸バンド5部、ロジンサイズ剤（商品名：AL-12
2、日本PMC（株）製）0.5部を添加し、水分率を75％に
調整して表層部（上部表層部、下部表層部）形成用の湿
紙を調製した。Example 6 A pulp consisting of 70 parts of hardwood bleached kraft pulp (converted to absolute dry rice tsubo, the same applies hereinafter) and 30 parts of softwood bleached kraft pulp was treated with a dry paper strength agent (trade names: Polyaclon, Misawa Ceramics ( Co., Ltd.) 1 part, wet paper strength agent (trade name: WS525, manufactured by Japan PMC Co., Ltd.) 0.5
Part, 5 parts of sulfuric acid band, rosin sizing agent (Product name: AL-12
2. 0.5 parts of PMC (Nippon PMC) was added to adjust the moisture content to 75% to prepare wet paper for forming a surface layer (upper surface layer, lower surface layer).
【００７１】一方、上白古紙80部及び切茶古紙20部から
なる古紙に、乾燥紙力増強剤（商品名：ポリストレロ
ン、荒川化学（株）製）1部、湿潤紙力増強剤（商品
名：WS525、日本PMC（株）製）0.5部、硫酸バンド5部、
ロジンサイズ剤（商品名：AL-122、日本PMC（株）製）
0.5部、発泡性マイクロカプセル（商品名：マツモトマ
イクロフェアー F-30、平均粒径17μｍ、外殻の軟化温
度80℃、松本油脂製薬（株）製）15部を添加し、水分率
を75％に調整して内層部形成用の発泡性粒子含有の湿紙
を調製した。On the other hand, 1 part of a dry paper strength enhancer (trade name: Poristrelon, manufactured by Arakawa Chemical Co., Ltd.) and a wet paper strength enhancer (trade name) : WS525, manufactured by Nippon PMC Co., Ltd.) 0.5 part, sulfate band 5 parts,
Rosin sizing agent (trade name: AL-122, manufactured by PMC Japan)
0.5 parts, 15 parts of expandable microcapsules (trade name: Matsumoto Microsphere F-30, average particle diameter 17 μm, outer shell softening temperature 80 ° C, manufactured by Matsumoto Yushi Seiyaku Co., Ltd.) are added, and the water content is reduced to 75%. To prepare an wettable paper containing expandable particles for forming the inner layer.
【００７２】これら湿紙を用い、上部表層部および下部
表層部のそれぞれの密度が0.90g/cm 3、内部層の密度が
0.50g/cm3になるように円網多層抄紙機で抄き合せ、米
坪270g/m2の上部表層部−内層部−下部表層部からなる3
層構成のファイル用紙を得た。Using these wet papers, the upper surface layer and the lower
Each density of the surface layer is 0.90 g / cm Three, The density of the inner layer
0.50g / cmThreeWith a circular web multi-layer paper machine so that
Tsubo 270g / mTwo3 consisting of upper surface layer-inner layer-lower surface layer
A layered file paper was obtained.
【００７３】このファイル用紙の全紙厚は451μｍであ
り、層間強度は0.98Mpa、剛度は32mNmであり、ファイル
用紙としての紙質を満足するものであった。また、用紙
を打ち抜き加工した結果、用紙の紙詰まり、2重送り等
もなく、加工適性上問題はなく、ファイル製品の形に成
型できるものであった。The total thickness of this file paper was 451 μm, the interlayer strength was 0.98 Mpa, and the stiffness was 32 mNm, satisfying the paper quality as file paper. In addition, as a result of punching out the paper, there was no paper jam, double feed, etc., there was no problem in processing suitability, and it could be molded into a file product form.
【００７４】[0074]
【発明の効果】本発明によれば、以下に記載するような
効果を奏する。 （１）植物繊維の使用量を減らした低米坪品であるにも
かかわらず、十分なコシ、強度、風合い、良好な打ち抜
き加工適性を有するファイル・ホルダー用紙が得られ
る。 （２）古紙の有効な再利用が行なえるため、資源保護に
も役立つ。According to the present invention, the following effects can be obtained. (1) File holder paper having sufficient stiffness, strength, texture, and good punching suitability can be obtained despite being a low-priced product with a reduced amount of plant fiber used. (2) Effective reuse of waste paper can be performed, which also contributes to resource conservation.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｄ２１Ｈ 27/18 Ｄ２１Ｈ 27/18 (72)発明者 大塚 清秋 愛媛県伊予三島市紙屋町５番１号 大王製 紙株式会社内 (72)発明者 本間 雅仁 愛媛県伊予三島市紙屋町５番１号 大王製 紙株式会社内 Ｆターム(参考） 2C017 QB01 QH01 4L055 AA02 AA03 AA11 AC06 AG56 AG94 AH01 AJ08 BD03 BD11 BD17 EA08 EA16 FA11 FA13 FA20 GA50 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) D21H 27/18 D21H 27/18 (72) Inventor Kiyoaki Otsuka 5-1 Kamiyacho, Iyo Mishima City, Ehime Prefecture Daio Inside Paper Manufacturing Co., Ltd. (72) Inventor Masahito Honma 5-1 Kamiyacho, Iyo Mishima City, Ehime Prefecture Dai-Oh Paper Manufacturing Co., Ltd. EA16 FA11 FA13 FA20 GA50
Claims (8)
表層部が密度0.65〜0.90g/cm3に、前記内層部が密度0.2
〜0.5g/cm3に調整された多層抄き用紙であって、前記内
層部に熱発泡粒子を含んでいることを特徴とするファイ
ル・ホルダー用紙。An article having at least a surface layer and an inner layer, wherein the surface layer has a density of 0.65 to 0.90 g / cm 3 and the inner layer has a density of 0.2
A multi-layer paper sheet adjusted to 0.5 g / cm 3 , wherein the inner layer portion contains thermally expanded particles.
が表層部側に多く偏在している請求項１記載のファイル
・ホルダー用紙。2. The file holder sheet according to claim 1, wherein a large amount of the thermally expanded particles contained in the inner layer portion are unevenly distributed on the surface layer side.
層部が密度0.2〜0.5g/cm3、他方の表層部が密度0.65〜
0.90g/cm3に調整された多層抄き用紙であって、前記内
層部に熱発泡粒子を含んでいることを特徴とするファイ
ル・ホルダー用紙。3. One of the surface layers has a density of 0.65 to 0.90 g / cm 3 , the inner layer has a density of 0.2 to 0.5 g / cm 3 , and the other has a density of 0.65 to 0.5 g / cm 3 .
File holder paper adjusted to 0.90 g / cm 3 , wherein the inner layer portion contains thermally expanded particles.
湿紙と、木材パルプ及び発泡性粒子を主成分として抄造
した内層部湿紙とを抄合させた後、前記発泡性粒子が加
熱発泡されるとともに、前記表層部の密度が0.65〜0.90
g/cm3に、前記内層部の密度が0.2〜0.5g/cm3になるよう
に加熱乾燥することを特徴とするファイル・ホルダー用
紙の製造方法。4. After the surface layer wet paper made mainly of wood pulp and the inner layer wet paper made mainly of wood pulp and expandable particles are mixed, the expandable particles are heated and expanded. And the density of the surface layer is 0.65 to 0.90
in g / cm 3, the manufacturing method of the file holder sheet density of the inner layer portion is characterized by heating and drying so as to 0.2-0.5 g / cm 3.
する湿紙に発泡性粒子の分散液がスプレー塗布され、前
記発泡性粒子が湿紙の厚さ方向でかつ紙層内に分布され
ている請求項４記載のファイル・ホルダー用紙の製造方
法。5. The inner layer wet paper is formed by spray-coating a dispersion of expandable particles on a wet paper mainly composed of wood pulp, and the expandable particles are deposited in the thickness direction of the wet paper and in the paper layer. The method for producing file holder paper according to claim 4, which is distributed.
抄造した内層部湿紙を、木材パルプを主成分として抄造
した２つの表層部湿紙により挟んで抄き合せた後、前記
発泡性粒子が加熱発泡されるとともに、２つの表層部の
密度が0.65〜0.95g/cm3に、前記内層部の密度が0.2〜0.
5g/cm3になるように加熱乾燥することを特徴とするファ
イル・ホルダー用紙の製造方法。6. An inner layer wet paper made mainly of wood pulp and expandable particles is sandwiched between two surface layer wet papers made mainly of wood pulp, and then mixed together. There while being heated foam, the density of the two surface layer portion in 0.65~0.95g / cm 3, the density of the inner layer portion is 0.2 to 0.
A method for producing file holder paper, characterized by heating and drying to 5 g / cm 3 .
であることを特徴とする請求項４〜６のいずれかに記載
のファイル・ホルダー用紙の製造方法。7. The method for producing a file holder sheet according to claim 4, wherein said expandable particles are expandable microcapsules.
が5〜30μｍで、80〜200℃での加熱により直径が4〜5
倍、体積が50〜130倍に膨張するマイクロカプセルであ
り、前記内層部湿紙の絶乾坪量換算重量に対し、1〜30
重量％含有することを特徴とする請求項７記載のファイ
ル・ホルダー用紙の製造方法。8. The foamable microcapsule has an average particle size of 5 to 30 μm, and has a diameter of 4 to 5 μm when heated at 80 to 200 ° C.
Times, the volume of the microcapsules expands 50 to 130 times, 1 to 30 with respect to the absolute dry weight of the inner layer wet paper.
The method for producing a file holder sheet according to claim 7, wherein the content is contained by weight%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000269757A JP2002069898A (en) | 2000-09-06 | 2000-09-06 | Paper for file holder and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000269757A JP2002069898A (en) | 2000-09-06 | 2000-09-06 | Paper for file holder and method for producing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002069898A true JP2002069898A (en) | 2002-03-08 |
Family
ID=18756308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000269757A Pending JP2002069898A (en) | 2000-09-06 | 2000-09-06 | Paper for file holder and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002069898A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002266295A (en) * | 2001-03-12 | 2002-09-18 | Daio Paper Corp | Cushion paper and manufacturing method thereof |
| WO2006132423A1 (en) * | 2005-06-07 | 2006-12-14 | K-Plasheet Corporation | Web, stampable sheet, expansion-molded stampable sheet, and process for producing these |
| JP2008050724A (en) * | 2006-08-25 | 2008-03-06 | Hokuetsu Paper Mills Ltd | Deep drawn moldable paper and method for producing the same |
| JP2008075206A (en) * | 2006-09-21 | 2008-04-03 | Hokuetsu Paper Mills Ltd | Deep drawing moldable sheet and method for producing the same |
| JP2010144286A (en) * | 2008-12-19 | 2010-07-01 | Oji Paper Co Ltd | Paper base material for liquid container |
| JP2010150691A (en) * | 2008-12-25 | 2010-07-08 | Keio Seishi Kk | Kraft paper having fibrous pattern |
| JP2017002433A (en) * | 2015-06-11 | 2017-01-05 | 王子ホールディングス株式会社 | Paper base material |
| US9743190B2 (en) | 2015-03-31 | 2017-08-22 | Bose Corporation | Acoustic diaphragm |
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2000
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002266295A (en) * | 2001-03-12 | 2002-09-18 | Daio Paper Corp | Cushion paper and manufacturing method thereof |
| US8491754B2 (en) | 2005-06-07 | 2013-07-23 | K-Plasheet Corporation | Web, stampable sheet and stampable sheet expanded product as well as method of producing the same |
| WO2006132423A1 (en) * | 2005-06-07 | 2006-12-14 | K-Plasheet Corporation | Web, stampable sheet, expansion-molded stampable sheet, and process for producing these |
| JP2006342437A (en) * | 2005-06-07 | 2006-12-21 | Keepura Sheet Kk | WEB, STAMPABLE SHEET, STAMPABLE SHEET EXPANSION MOLDED PRODUCT, AND METHOD FOR PRODUCING THEM |
| US8815056B2 (en) | 2005-06-07 | 2014-08-26 | K-Plasheet Corporation | Web on stampable sheet and method of making |
| US20090223644A1 (en) * | 2005-06-07 | 2009-09-10 | K-Plasheet Corporation | Web, stampable sheet and stampable sheet expanded product as well as method of producing the same |
| JP2008050724A (en) * | 2006-08-25 | 2008-03-06 | Hokuetsu Paper Mills Ltd | Deep drawn moldable paper and method for producing the same |
| JP2008075206A (en) * | 2006-09-21 | 2008-04-03 | Hokuetsu Paper Mills Ltd | Deep drawing moldable sheet and method for producing the same |
| JP2010144286A (en) * | 2008-12-19 | 2010-07-01 | Oji Paper Co Ltd | Paper base material for liquid container |
| JP2010150691A (en) * | 2008-12-25 | 2010-07-08 | Keio Seishi Kk | Kraft paper having fibrous pattern |
| US9743190B2 (en) | 2015-03-31 | 2017-08-22 | Bose Corporation | Acoustic diaphragm |
| US9769570B2 (en) | 2015-03-31 | 2017-09-19 | Bose Corporation | Acoustic diaphragm |
| JP2017002433A (en) * | 2015-06-11 | 2017-01-05 | 王子ホールディングス株式会社 | Paper base material |
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