JPS62289697A - Printing paper and coated paper having multilayer structure - Google Patents
Printing paper and coated paper having multilayer structureInfo
- Publication number
- JPS62289697A JPS62289697A JP13314486A JP13314486A JPS62289697A JP S62289697 A JPS62289697 A JP S62289697A JP 13314486 A JP13314486 A JP 13314486A JP 13314486 A JP13314486 A JP 13314486A JP S62289697 A JPS62289697 A JP S62289697A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- pulp
- layer
- printing
- swelling
- 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.)
- Granted
Links
- 238000007639 printing Methods 0.000 title claims description 50
- 239000010410 layer Substances 0.000 claims description 63
- 230000008961 swelling Effects 0.000 claims description 34
- 230000002792 vascular Effects 0.000 claims description 34
- 239000002344 surface layer Substances 0.000 claims description 21
- 239000000123 paper Substances 0.000 description 92
- 238000000034 method Methods 0.000 description 20
- 238000010009 beating Methods 0.000 description 12
- 239000011121 hardwood Substances 0.000 description 10
- 229920001131 Pulp (paper) Polymers 0.000 description 9
- 239000000835 fiber Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000002023 wood Substances 0.000 description 6
- 241001070947 Fagus Species 0.000 description 5
- 235000010099 Fagus sylvatica Nutrition 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000011087 paperboard Substances 0.000 description 5
- 229920002522 Wood fibre Polymers 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002025 wood fiber Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011122 softwood Substances 0.000 description 3
- 241000894007 species Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007645 offset printing Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 244000182625 Dictamnus albus Species 0.000 description 1
- 208000010201 Exanthema Diseases 0.000 description 1
- 241000277269 Oncorhynchus masou Species 0.000 description 1
- 241001674048 Phthiraptera Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 201000005884 exanthem Diseases 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000013055 pulp slurry Substances 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
３、発明の詳細な説明
産業上の利用分野
本発明は、広葉樹から製造される化学パルプ乃至半化学
パルプのごとき通管要素を含有するパルプに起因する印
刷時の道管ムケ（ヘラセルピックと称せられる）の発生
を防止するための多層構造を有する印刷用紙及び塗工原
紙に関する。Detailed Description of the Invention 3. Detailed Description of the Invention Industrial Field of Application The present invention is directed to the prevention of problems during printing caused by pulp containing passage elements, such as chemical pulp or semi-chemical pulp manufactured from hardwood. The present invention relates to printing paper and coated base paper having a multilayer structure for preventing the occurrence of pipe swelling (referred to as heraserpic).
従来（術とその間 点
広葉樹を原料として製造される化学パルプ乃至半化学パ
ルプは、木繊維、柔細胞及び道管要素（以下道管と称す
る）を主要構成要素としており、これらの構成要素の形
態的特徴から、それから紙層構造を形成するに際して針
葉樹由来のパルプとは異なった性状を示すことが知られ
ている。因に、針葉樹由来の化学パルプはほとんど坂道
管と称せられる繊維状の構成要素から成っているもので
ある。Conventionally, chemical pulp and semi-chemical pulp manufactured using hardwood as raw materials have wood fibers, parenchyma cells, and vessel elements (hereinafter referred to as vessels) as their main constituents, and the morphology of these constituents is It is known that when forming a paper layer structure from it, it exhibits different properties from pulp derived from softwoods.Incidentally, chemical pulp derived from softwoods mostly consists of fibrous components called slope pipes. It consists of
ところで、一般に、上記道管は細胞直径が木繊維などに
比して大きく、且つ細胞壁が薄いため紙層構造の中にお
いては押し潰されて偏平状態となり易いものである。し
たがって、このような状態の通管が紙層の表面に存在し
ている場合、この紙をオフセット印刷等をする際道管ム
ケ（ヘラセルピック）を発生する原因となり、印刷工程
上太きな障害となる。そして、オフセット印刷における
道管ムケ発生の現象は道管と木繊維などの他の紙層構成
要素との結合が不十分なことに起因している。By the way, in general, the cell diameter of the vessel is larger than that of wood fibers, etc., and the cell wall is thinner, so that it is easily crushed into a flat state in the paper layer structure. Therefore, if tubes in this condition exist on the surface of the paper layer, it may cause tube swelling (heraserpic) when this paper is used for offset printing, etc., which can cause major problems in the printing process. Become. The phenomenon of vessel swelling in offset printing is caused by insufficient bonding between the vessels and other paper layer constituent elements such as wood fibers.
以上のごとく、印刷時にみられろ紙層における道管ムケ
の発生は、紙層に道管が構成要素として存在しているこ
とに因るものであるから、それを防止するには道管を含
有しないかもしくは道管含有量の少ない樹種を原料とし
たパルプを用いるとよいことになるが、しかし、近年に
おける製紙用原木資源確保の観点から広葉樹林を製紙原
料として用いることが余儀なくされその使用量も増加し
てきている。したがって、元来、道管含有量の多い広葉
樹由来のパルプからの紙の生産量の増加に伴い、上記道
管ムケ対策が重要な問題となっている。なお、広葉樹由
来のパルプに起因する道管ムケとは、印刷工程において
紙層の表面に存在する道管が印刷版面のインキのタック
により剥ぎ取られる現象といえる。As mentioned above, the occurrence of vessel swelling in the filter paper layer during printing is due to the presence of vessels as constituent elements in the paper layer, so in order to prevent this, it is necessary to contain vessels. It would be better to use pulp made from tree species that are not polluted or have a low vascular content, but in recent years, from the perspective of securing raw wood resources for papermaking, it has become necessary to use hardwood forests as raw material for papermaking, and the amount used has decreased. is also increasing. Therefore, with the increase in the production of paper from pulp derived from hardwoods, which originally has a high vascular content, countermeasures against vascular swell have become an important issue. Incidentally, vessel smear caused by hardwood-derived pulp can be said to be a phenomenon in which vessels present on the surface of the paper layer are peeled off by the tack of ink on the printing plate surface during the printing process.
従来、道管ムケの発生を防止するための対策として一最
に行われている方法としては、まず、道管ムケ発生が比
較的軽微である道管含有量の少ない樹種或は道管の形状
の小さい樹種を選択して使用することが行われている。Conventionally, the most common method to prevent the occurrence of vascular swelling is to first reduce the amount of vascular content or the shape of the ducts, which causes relatively slight vascular swelling. The practice is to select and use small tree species.
しかし、このような対策では利用可能な原木樹種が制約
されることになり、広葉樹資源の活用にならない。特に
原木資源上豊富と言われている熱帯性広葉樹（道管が大
きく、かつ含有量が多い）を製紙原料として利用するう
えでの対策にならない。However, such measures limit the types of log trees that can be used and do not make good use of hardwood resources. In particular, this is not a good measure when using tropical hardwoods (with large vessels and high content), which are said to be abundant in raw wood resources, as raw materials for papermaking.
また、上記道管ムケ発生の積極的防止対策として一最に
行われている方法は、紙屑内の道管の結合を促進するた
めの接着剤を内部添加する方法、及びサイズプレスなど
における接着剤の塗布、すなわち、表面サイズ処理法な
どが有力な方法として実用化されている。しかし、この
ような接着剤を紙層内部に添加したり、紙層表面に塗布
することにより、インキタックに対する抵抗性は強化す
る反面、それを多用すると紙質が硬（なるなどの祇本来
の性質を損なう問題がある。In addition, the most commonly used methods for proactively preventing the occurrence of pipe swelling are the internal addition of an adhesive to promote the bonding of the pipes within the waste paper, and the use of adhesives in size presses, etc. Coating, ie, surface size treatment, etc., has been put into practical use as an effective method. However, by adding such adhesives inside the paper layer or coating them on the surface of the paper layer, resistance to ink tack can be strengthened. There is a problem that damages the
上記のほかに、更に、原料パルプの叩解を強化して道管
ムケ発生を防止する方法がいくつか提案されている。例
えば、原料バルブを十分低フリーネスまでに叩解して道
管と木繊維などの紙層構成要素相互の結合を高める方法
（Ｊ、Ｃｏ１）ｅｙ、 ＪＪａｒｄ： 「７ピタｊ （
Ａｐｐｉｔａ）、益（５）、３４４ （１９７６））、
原料バルブの高濃度叩解により道管を変形、破壊し、小
型化する方法（Ｊ、Ｎ、ＭｃＧｏｖｅｒｎ ： ｒパル
プアンドペーパーＪ （Ｐｕｌｐ Ｐａｐｅｒ）、Ｄｅ
ｃｅｍｂｅｒ １９７７、ｐ、５８； その他〕が提案
されており、特に、後者の方法について、Ｂｙｒｄはさ
らに偏心形のりファイナ−を用いて行うと道管ムケ発生
防止に非常に有効であると報告している（Ｖ、Ｌ、Ｂｙ
ｒｄ、 ｅｔ ａｌ、 ： ｒペーパー トレードジャ
ーナルＪ （Ｐａｐｅｒ Ｔｒａｄｅ Ｊ、）、ユ旦（
４６） 、５５（１９６７） ： １堕（４７）、５
４（１９６９） ）。In addition to the above methods, several methods have been proposed for strengthening the beating of the raw material pulp to prevent the occurrence of ductal bloat. For example, a method of improving the bond between paper layer components such as vessels and wood fibers by beating the raw material valve to a sufficiently low freeness (J, Co1)ey, JJard: "7 pita j (
Appita), Masu (5), 344 (1976)),
A method of deforming and destroying vessel pipes and downsizing them by high-concentration beating of raw material valves (J, N, McGovern: r Pulp and Paper J (Pulp Paper), De
cember 1977, p. 58; and others], and in particular, regarding the latter method, Byrd further reported that using an eccentric glue refiner is very effective in preventing the occurrence of canal swelling. There is (V, L, By
rd, et al, : r Paper Trade Journal J (Paper Trade J,), Yudan (
46), 55 (1967): 1 fall (47), 5
4 (1969)).
しかしながら、これらの叩解による方法では、よく知ら
れているように、パルプは叩解を進めるに伴って、−１
Ｇに乾燥時のシート収縮率が増大し、湿度変化によるシ
ートの寸法変化率が大きくなる問題がみられる。特に、
高濃度叩解を採用した場合には、通常の叩解度程度の叩
解であっても低濃度叩解に比べ乾燥時のシート収縮率が
増大し、それに伴い紙の寸法安定性の劣化、嵩の低下、
不透明度の低下などの欠点がみられる。すなわち、道管
ムケ発生の防止対策としての叩解による方法には避ける
ことのできない本質的な問題点が内包されていると言え
る。However, in these beating methods, as it is well known, the pulp loses -1 as the beating progresses.
In G, there is a problem that the shrinkage rate of the sheet during drying increases and the rate of dimensional change of the sheet due to changes in humidity increases. especially,
When high-concentration beating is used, even if the beating is at a normal level of beating, the sheet shrinkage rate during drying increases compared to low-concentration beating, and as a result, the dimensional stability of the paper deteriorates, the bulk of the paper decreases,
There are drawbacks such as decreased opacity. In other words, it can be said that the method of beating as a preventive measure against the occurrence of ductal bloat involves inherent problems that cannot be avoided.
口が”しようとする課！
本発明は、上述したごとき状況に鑑みなされたものであ
って、広葉樹由来の化学パルプ乃至生化学パルプのごと
き道管を有していてパルプに起因する道管ムケの発生を
、パルプを製造するための原木樹種の制約やパルプの叩
解による紙質の低下等の問題を伴うことなく、有効に防
止するための多層構造を有する印刷用紙及び塗工原紙を
提供することを課題とする。The present invention has been developed in view of the above-mentioned situation, and is designed to prevent vascular swelling caused by pulp containing chemical pulp or biochemical pulp derived from hardwoods. To provide a printing paper and a coated base paper having a multilayer structure for effectively preventing the occurrence of the above problems, such as restrictions on the species of logs used to manufacture pulp and deterioration of paper quality due to pulp beating. The task is to
本発明者らは、印刷時における道管ムケ発生の機構を調
べる目的で、印刷版と接する紙の表面構造を走査型電子
顕微鏡で詳細に観察した結果、紙の表面付近に存在する
道管を被覆する繊維の本数が多いほど道管ムケが起きに
くくなる傾向があることを見出し、道管ムケを起こし易
いパルプ層の上に道管ムケを起こさないパルプ層を被覆
すると道管ムケの発生を完全に防止し得ることを見出し
、本発明をなすに至った。The present inventors used a scanning electron microscope to closely observe the surface structure of the paper in contact with the printing plate in order to investigate the mechanism of the occurrence of vessel blemishes during printing. We found that the greater the number of coated fibers, the less likely it is that vascular swollenness will occur, and we found that coating a pulp layer that does not cause vascular swelling on top of a pulp layer that easily causes vascular swelling will reduce the occurrence of vascular swelling. We have discovered that this can be completely prevented, and have come up with the present invention.
すなわち、本発明は、道管ムケを起こし易い程度に道管
を含有しているパルプ層の上に、道管を含有しないか、
もしくは道管が存在するとしても道管ムケを起こさない
程度にしか存在しないパルプ層を被覆した少な（とも２
層から成る多層構造に紙を形成することにより、上記課
題を解決することに成功した。That is, in the present invention, on a pulp layer that contains vascular vessels to an extent that easily causes vascular swelling, a pulp layer that does not contain vascular vessels or
Or, even if vessels exist, they are coated with a pulp layer that is present only to the extent that they do not cause vessel swelling.
The above problems were successfully solved by forming the paper into a multilayer structure consisting of layers.
以下本発明の詳細な説明する。The present invention will be explained in detail below.
又里坐盪底
本発明の構成上の特徴は、道管を含有していて印刷に際
して道管ムケを起すパルプから成る層の上に、道管を有
しないか、もしくは印刷に際して実質上道管ムケを起さ
ないパルプから成る印刷面としての表層を被覆して形成
して成る構造を有する印刷用紙及び塗工原紙にある。The structural feature of the present invention is that on the layer of pulp that contains vessels and causes vascular smearing during printing, the layer does not have vascular ducts or substantially swells during printing. The present invention relates to printing paper and coated base paper having a structure in which a surface layer serving as a printing surface is coated with pulp that does not cause oxidation.
ここでいう“印刷に際して実質上道管ムケを起さないパ
ルプとは、道管を含有していてもその量が僅少かもしく
はその形状が小形であることに因り、実際の印刷上に支
障をきたすような道管ムケを起さないパルプを意味する
。As used herein, "pulp that does not substantially cause vascular swelling during printing" means that even if it contains vascular vessels, the amount of vascular vessels is small or their shape is small, so that they do not interfere with actual printing. Refers to pulp that does not cause duct swelling.
また、本発明が対象とする印刷用紙は、従来の多層構造
を有する板紙と区別されるべきものである。すなわち、
上記印刷用紙では印刷面となるパルプの被覆層の厚さは
Ｉｇ／ ｔｒｉ乃至約２０ｇ／ｍであって、特に該被覆
層の厚さが１〜２ｇ／ｎ？という極めて薄い層であって
も、印刷時にその下に位置する道管ムケ発生バルブ層に
起因する道管ムケの発生がみられず、印刷し得る特性を
発揮し得るものである。これに対し、従来の板紙では品
質の劣るパルプ層からなる下層を被覆するための表層の
パルプ（漂白パルプ）層の厚さを非常に大きくする必要
があり、一般に５５〜７０ｇ／ｒｄ程度の厚さにする必
要がある（紙業タイムス社発行「白板紙・紙器Ｊ １９
７９、ｐ、５３参照）。Further, the printing paper to which the present invention is directed should be distinguished from conventional paperboard having a multilayer structure. That is,
In the above-mentioned printing paper, the thickness of the pulp coating layer serving as the printing surface is Ig/tri to about 20 g/m, and in particular, the thickness of the coating layer is 1 to 2 g/n? Even with such an extremely thin layer, during printing, the occurrence of vascular smear caused by the vascular smear-producing valve layer located below is not observed, and printable properties can be exhibited. In contrast, with conventional paperboard, it is necessary to make the surface pulp (bleached pulp) layer very thick to cover the lower layer, which is made of a pulp layer of inferior quality, and the thickness is generally about 55 to 70 g/rd. (White Paperboard/Paper Carton J 19 published by Paper Industry Times)
79, p. 53).
課 を”するための
本発明に係る多層構造を有する印刷用紙及び塗工原紙に
おいて、印刷面である表層（被覆層）を形成するパルプ
には、前述のように道管ムケを起さない良質のパルプ、
すなわち、道管を含有しないか、もしくは道管を含有す
るとしても実際の印刷に当って支障を与えない、実質上
の道管ムケを起さないパルプを用いるものであって、こ
のようなパルプとしては通常１、道管を有しない針葉樹
パルプの使用が好ましいが、道管の形状が比較的小さい
ために道管ムケを起しにくいブナパルプ（ブナＢＫＰ）
等を用いることもできる。一方、下層を形成する道管ム
ケを起すパルプには広範囲な種類の広葉樹由来パルプ、
例えばラワン材由来のパルプを用い得る。In the printing paper and coated base paper having a multilayer structure according to the present invention for "section", the pulp that forms the surface layer (coating layer) that is the printing surface is made of high quality pulp that does not cause vascular sagging as described above. pulp,
In other words, pulp that does not contain vessels, or even if it does contain vessels, does not pose a problem during actual printing and does not substantially cause vessel swelling, is used. Generally speaking, it is preferable to use softwood pulp that does not have vessels, but beech pulp (Buna BKP), which does not easily cause vessel swelling due to its relatively small vessel shape, is preferable.
etc. can also be used. On the other hand, the pulp that forms the lower layer and causes ductal swelling includes a wide variety of hardwood-derived pulps,
For example, pulp derived from lauan wood can be used.
なお、道管の多い広葉樹から製造した化学パルプ中の道
管を液体サイクロンを用いて濃縮分離して、道管含有率
を減少させたパルプ分画部分を上記表面層に、道管含有
率を増大させたパルプ分画部分を下層に用いることも、
道管ムケの発生を完全に防止する必要のない印刷紙の場
合には可能である。In addition, the vessels in the chemical pulp produced from hardwoods with many vessels are concentrated and separated using a liquid cyclone, and the pulp fraction with a reduced vessel content is used as the surface layer, and the vessel content is reduced. It is also possible to use the increased pulp fraction in the lower layer.
This is possible in the case of printing paper for which it is not necessary to completely prevent the occurrence of vascular blemishes.
上記道管ムケを起し易いパルプ層の上に被覆させる上記
良質パルプの厚さはＩｇ／ｎ？以上であれば下層のパル
プ層に起因する道管ムケの発生を著しく減少させるこき
ができ（凡そ１層４程度までに減少し得る）、２〜ｓｇ
／ｍの厚さにすると、上記道管ムケは実質上はとんど防
止し得る。Is the thickness of the above-mentioned high-quality pulp to be coated on the above-mentioned pulp layer that is likely to cause vascular swelling Ig/n? If it is above, it is possible to significantly reduce the occurrence of duct swelling caused by the lower pulp layer (it can be reduced to about 4 per layer), and 2 to sg
/m thick, the above-mentioned canal swelling can be virtually prevented.
この点に関し、本発明者らが道管ムケを起し易いパルプ
として無染色のラワン材から調製した晒クラフトパルプ
（以下ＢＫＰと略す）を下層とし、その上に表層として
、染色した道管ムケをほとんど起さないブナのＢＫＰを
１〜２０ｇ／ｎ（の範囲の各厚さにしたものをそれぞれ
被覆させた場合における下層のラワンＢＫＰ中の道管が
、表層のブナＢＫＰの繊維で被覆される様子を光学顕微
鏡で観察した結果を第１表に示す。Regarding this point, the present inventors used bleached kraft pulp (hereinafter abbreviated as BKP) prepared from undyed lauan wood as a pulp that easily causes vascular swollen as a lower layer, and on top of that as a surface layer, dyed vascular smear was prepared. When coated with beech BKP that hardly causes oxidation, the vessels in the lower layer of lauan BKP are coated with the fibers of the surface layer of beech BKP. Table 1 shows the results of observing the process using an optical microscope.
上記表にみられるとおり、表層パルプの厚さがＩｇ／
ｒｄではその１〜５本の繊維が下層パルプ中の道管上に
乗っているにすぎないけれども、道管ムケの発生は１／
４程度にまで減少すること、また、表層パルプの厚さが
２ｇ／ｒ！？でもその繊維の４〜７木が下層パルプ上に
乗っている程度で下層が十分に透けて見える状態なのに
道管ムケの発生がほとんどみられないことは極めて驚く
べきことであると言える。As seen in the table above, the thickness of the surface pulp is Ig/
In RD, only 1 to 5 fibers are placed on the vessels in the lower pulp, but the occurrence of vessel swelling is 1/2.
4, and the thickness of the surface pulp is 2g/r! ? However, it can be said that it is extremely surprising that even though the lower layer is sufficiently transparent with only 4 to 7 fibers resting on the lower pulp, there is almost no occurrence of vascular swelling.
次に、本発明に係る多層構造を有する印刷用紙、すなわ
ち、下層のパルプ層の上に印刷面となる表層のパルプを
被覆した構造の紙を形成するには、下に示すごとき抄紙
機を組合わせて用いる多層抄紙技術を利用して行い得る
。従来、紙層の非常に厚い板紙製造の分野では、円網抄
き合わせ抄紙機や多重長網抄紙機などを用いてフェルト
上で湿紙を重ね合わせるか、或はワイヤ上で既に形成さ
れている湿紙層の上に次々と新たな紙層を噴霧形成させ
ていくという、抄き合わせ技術として発達してきた。し
かし、最近、印刷用紙やティッシュ−のような薄物の紙
製造分野でも、多層抄紙用に開発されたヘッドボックス
とツインワイヤ抄紙機或は長網抄紙機とを組合わせるこ
とで、抄き合わせ技術によらずに一工程で多層構造を有
する紙を抄くことが可能となってきた。Next, in order to form a printing paper having a multilayer structure according to the present invention, that is, a paper having a structure in which a surface layer of pulp, which becomes a printing surface, is coated on a lower pulp layer, a paper machine as shown below is assembled. This can be done by using a multi-layer papermaking technique. Traditionally, in the field of paperboard manufacturing with very thick paper layers, wet paper sheets are layered on felt using a circular mesh paper machine, multiple fourdrinier paper machine, etc., or paper sheets already formed on wire are used. It has been developed as a papermaking technology that involves spraying and forming new paper layers one after another on top of existing wet paper layers. However, recently, even in the field of thin paper manufacturing such as printing paper and tissue paper, paper making technology has been developed by combining a head box developed for multilayer paper making with a twin wire paper machine or a Fourdrinier paper machine. It has become possible to make paper with a multilayer structure in one step without relying on paper.
すなわち、多層抄紙用ヘッドボックスとして、Ｂｅｌｏ
ｉｔ社のＣｏｎｖｅｒｆｌｏ ５ｔｒａｔａ−Ｆｌｏ
、 ＫＭＷ社のＨＴＢ−３Ｌ、 Ｅｓｃｈｅｒ Ｗｙｓ
ｓ社のＳｔｅｐｆｌｏｗ Ｍ、、Ｔａ＋ｍｐｅｌｌａ社
のＣｏｎｔｒａ−Ｆｌｏｗなどを用いて、各層の紙料を
ストックインレットから平行に流出させて層状の紙層を
形成するものである。これらの単一ヘッドボックスによ
る多層抄紙では、各紙層の境界面で原料パルプが適度に
混合するため、従来の抄き合わせに比べＺ方向の強度が
大きく、層間７１）離が生じに（い紙を抄（ことができ
る長所がある。In other words, as a head box for multilayer papermaking, Belo
It company's Convertflo 5trata-Flo
, KMW HTB-3L, Escher Wys
Using Stepflow M manufactured by S Company, Contra-Flow manufactured by Ta+Mpella Company, etc., each layer of paper stock is flowed out in parallel from a stock inlet to form a layered paper layer. In multi-layer paper making using a single headbox, the raw material pulp is mixed appropriately at the interface between each paper layer, so the strength in the Z direction is greater than in conventional paper making, and separation between layers (71) occurs, resulting in paper It has the advantage of being able to extract.
なお、紙製造に多層抄紙技術を通用することによる利点
として、板紙の場合と同様に表層に良質ノハルプを、内
層に安価なパルプを用いて、１００％良質のパルプを用
いたのと外見上同様な紙を得ることができること、及び
紙層構造に依存する紙の品質の設計が可能になること等
が挙げられる。因に、印刷用紙に上記多層抄紙技術を利
用する場合、表層を短繊維、内層を長繊維とすること、
表層を機械パルプ、内層を化学パルプに形成することに
より、紙の平滑性やインキ吸収性が向上し、かつ嵩高で
圧縮性の良い印刷用紙を製造し得ることが報告されてい
る（Ｊ、 １．Ｂｅｒｇｓｔｒｏｍ、「ノルスクスコギ
インダストリーＪ （Ｎｏｒｓｋ Ｓｋｏｇｉｎｄ、）
、虱、１３３（１９７７）及びＪ、Ａ、Ｂｒ１ｓｔｏｎ
ｅｔ ａｌ、 、ｒスベンスクペーバステイドウング
（Ｓｖｅｎｓｋ Ｐａｐｐｅｒｓｔｉｄｎ、）、８６、
Ｒ１６４（１９８３） ） 。An advantage of applying multilayer papermaking technology to paper manufacturing is that, like in the case of paperboard, high-quality Noharp is used for the surface layer and inexpensive pulp is used for the inner layer, which is similar in appearance to using 100% high-quality pulp. Examples include being able to obtain paper with a high quality, and making it possible to design paper quality that depends on the paper layer structure. Incidentally, when using the above multilayer papermaking technology for printing paper, the surface layer should be made of short fibers and the inner layer should be made of long fibers.
It has been reported that by forming the surface layer with mechanical pulp and the inner layer with chemical pulp, it is possible to improve the smoothness and ink absorption of the paper, and to produce printing paper that is bulky and has good compressibility (J, 1). .Bergstrom, “Norsk Skogind.
, Lice, 133 (1977) and J. A. Brstone.
et al., Svensk Paperstidung, 86.
R164 (1983)).
以下に実施例により、本発明及びその効果を具体的に説
明する。EXAMPLES The present invention and its effects will be specifically explained below with reference to Examples.
実施例１
ＴＡＰＰＩ型標準手抄き装置を改造し、単一ヘッドボッ
クスによる多層抄紙をシミュレートできる、すなわち連
続的に異なる種類のパルプスラリーを供給しつつ濾過脱
水できる多層シート手抄き装置を使用して表層と下層の
パルプ種類が異なり、かつ表層のパルプ層の厚さの異な
る手抄き２層シートを作製した。この手抄き２層シート
をＩＧＴユニバーサル型印刷試験機による印刷試験に供
し、道管ムケとの関係を調べた。Example 1 A TAPPI type standard hand-sheet machine was modified to use a multi-layer sheet hand-paper machine that can simulate multi-layer paper making with a single headbox, that is, it can continuously supply different types of pulp slurry while filtration and dewatering. A handmade two-layer sheet was prepared in which the surface layer and the bottom layer had different types of pulp, and the thickness of the surface pulp layer was different. This handmade two-layer sheet was subjected to a printing test using an IGT universal printing tester to investigate the relationship with canal swelling.
表層パルプとして広葉樹ではあるが道管が比較的小さい
ため道管ムケを起こしにくいブナＢＫＰ（パルプ濃度１
０％でＰＦＩミル叩解した。フリーネス３７５ｍ ｌ！
）を用いた。また、下層パルプとして大形の道管をも
ち道管ムケを起こしやすい南洋材ラワンＢＫＰ（フリー
ネス４００ｍ ｌ！ ）を用いた。これらの２種類のパ
ルプを用いて作製した表層厚さが異なり、かつ全坪量６
０ｇ／ｒ＋？の手抄きシートを、温度２０℃、相対湿度
６５％の恒温恒温室内で、ＩＰｌインク隆３を使用し、
印刷速度１．７５ｍ／ｓｅｃ、印刷線圧１８．７５ｋｇ
ｆ／ｃ−の条件で印刷して、道管ムケの数を測定した。Beech BKP (pulp density: 1
PFI mill beating at 0%. Freeness 375ml!
) was used. In addition, as the lower pulp, lauan BKP (freeness: 400 ml!), a tropical wood with large vessels and prone to causing tube swelling, was used. The surface layer thicknesses produced using these two types of pulp are different, and the total basis weight is 6.
0g/r+? The handmade sheets were heated in a thermostatic chamber at a temperature of 20°C and a relative humidity of 65% using an IPl Ink Ryu 3.
Printing speed 1.75m/sec, printing linear pressure 18.75kg
Printing was carried out under f/c- conditions, and the number of vessel blemishes was measured.
これらの結果を第２表に示す。These results are shown in Table 2.
第２表
第２表から明らかなように、表層パルプの厚さの増加に
伴い、道管ムケ数は急激に減少する０表層厚さがわずか
Ｉｇ／ｒｒ？では、表層パルプがない場合、すなわち下
層ラワンパルプが完全に露出していする状態に比べ、わ
ずか４分の１以下にまで減少し、明らかに道管ムケ発生
の防止効果が発現される。また、さらに表層パルプ厚み
が２ｇ／ｇ以上では道管ムケ数がラワンＢＫＰに比べて
２０分の１以下に低下し、実質的に道管ムケの発生を防
止し得る。Table 2 As is clear from Table 2, as the thickness of the surface pulp increases, the number of canal tubes decreases rapidly.0 The surface layer thickness is only Ig/rr? In this case, compared to the case where there is no surface pulp, that is, the lower layer lauan pulp is completely exposed, the amount is reduced to less than one-fourth, and the effect of preventing the occurrence of ductal swelling is clearly exhibited. Further, when the surface pulp thickness is 2 g/g or more, the number of vascular swells is reduced to 1/20 or less compared to lauan BKP, and the occurrence of vascular swells can be substantially prevented.
実施例２
実施例１と同様にして道管をもたない針葉樹パルプ（Ｎ
ＢＫＰと略す、フリーネス５２０１ｍ ｌ ）を表層と
し、道管ムケを起こしやすいラワンＢＫＰ（フリーネス
４０５ｍ ｊ！ ）下層とする手抄きシートを作製し、
実施例１と同様の条件で印刷試験に供した。得られた結
果を第３表に示す。Example 2 Coniferous pulp without vessels (N
A handmade sheet was prepared with a surface layer of BKP (abbreviated as freeness 5201ml) and a lower layer of lauan BKP (freeness 405mj!), which tends to cause vascular swelling,
A printing test was conducted under the same conditions as in Example 1. The results obtained are shown in Table 3.
第３表
第３表から明らかなように、表層パルプの種類が異なっ
ても道管ムケを起さないパルプを用いれば、表層厚さが
わずか１８／ｄで、表層パルプがない場合、すなわち下
層ラワンパルプが完全に露出している状態に比べ、わず
か４分の１以下にまで減少し、明らかに道管ムケ発生の
防止効果が発現される。また、さらに表層パルプ厚みが
２ｇ／＋ｙｆ以上では道管ムケ数がラワンＢＫＰに比べ
て１０分の１以下に低下し、実質的に道管ムケの発生を
防止し得る。Table 3 As is clear from Table 3, if a pulp that does not cause vascular swelling is used even if the surface pulp is of different types, the surface layer thickness is only 18/d and if there is no surface pulp, that is, the lower layer Compared to the state where the lauan pulp is completely exposed, the amount is reduced to less than one-fourth, which clearly shows the effect of preventing the occurrence of ductal swelling. Further, when the surface pulp thickness is 2 g/+yf or more, the number of vascular swells is reduced to one-tenth or less compared to lauan BKP, and the occurrence of vascular swells can be substantially prevented.
実施例３
未叩解のラワンを液体サイクロン（セントリクリーナー
６００型）を用いて道管含有率を減少させた部分（アク
セプト側パルプ）と増大させた部分（リジェクト側パル
プ）とに分画した０分画処理の条件は、パルプ濃度０．
２５％、入口ゲージ圧３．０ ｋｇｆ／ｃｊ、リジェク
ト率３０．７％とした。パルプ中の道管の数および平均
面積は、それぞれ未処理の未叩解パルプで８８個／ｍｇ
、０．０７１６ｓ＋ｓｔ”７個、アクセプト側バルブで
６８個／−ｇ、０．０５３１菖−ｔ／個、リジェクト側
パルプで２１）個／ｌ１ｇ、０．０８７９ｉＩｍ”７個
であった。Example 3 Unbeaten lauan was fractionated using a liquid cyclone (Sentry Cleaner 600 model) into a part with reduced vessel content (accept side pulp) and a part with increased vessel content (reject side pulp). The image processing conditions were a pulp density of 0.
25%, inlet gauge pressure 3.0 kgf/cj, and rejection rate 30.7%. The number and average area of vessels in the pulp are 88/mg in untreated unbeaten pulp, respectively.
, 0.0716s+st" 7 pieces, 68 pieces/-g, 0.0531 iris-t/piece on the accept side valve, 21) pieces/l1g, 0.0879iIm" 7 pieces on the reject side pulp.
実施例１と同様の方法で、これらの分画処理をしたパル
プのうち道管含有率を減少させたアクセプト側バルブ（
フリーネス３１５ｔａ ｌ ）を表層とし、道管含有率
を増大させたりジェクト側パルプ（フリーネス４００ｍ
ｊ！ ）を下層とする手抄きシートを作製し、実施例
１と同じ条件で印刷試験を行った。In the same manner as in Example 1, the acceptance side valve (
Freeness 315 tal) is used as the surface layer to increase the vessel content, and eject side pulp (freeness 400 tal) is used as the surface layer.
j! ) was prepared as a lower layer, and a printing test was conducted under the same conditions as in Example 1.
得られた結果を第４表に示す。The results obtained are shown in Table 4.
第４表
第４表から明らかなように、道管含有率が太きく、また
、道管平均面積も大きいラワンリジェクト側パルプの露
出しな祇（試験番号１）では、非常に道管ムケの数が多
いが、この場合に比べ、表層ラワンアクセプト側パルプ
の厚さがＩｇ／ ｒｄでは道管ムケ数は約３分の１まで
減少し、１．５８／ ｎ７以上ではおよそ５分の１以下
、すなわち表層パルプそのものの道管ムケ数のレベルに
達する。Table 4 As is clear from Table 4, the exposed pulp of the lauan reject side (Test No. 1), which has a thicker vessel content and a larger average area of vessels, has a very large vessel swell. Although the number is large, compared to this case, when the thickness of the pulp on the surface lauan acceptance side is Ig/rd, the number of canal tubes decreases to about one-third, and when it is 1.58/n7 or more, it decreases to about one-fifth or less. In other words, it reaches the level of the number of canals in the surface pulp itself.
道管ムケを完全に防止する必要がなく、一定レベル以下
にとどめるのみでよい場合は、この例の様に単独で用い
た場合その条件を満たすパルプをＩｇ／ ｒｒ？以上表
層に用いることで目的にあった印刷用紙が得られる。If it is not necessary to completely prevent canal swelling and it is only necessary to keep it below a certain level, use Ig/rr? By using the above for the surface layer, a printing paper suitable for the purpose can be obtained.
実施例４
表層パルプとしてブナＢＫＰ （パルプ濃度５％でＰＦ
Ｉミル叩解した。フリーネス３９５ＩＩＩり、下層パル
プとしてラワンＢ Ｋ Ｐ （５％濃度叩解、フリーネ
ス３７５ｍ ｌ ）を用いて、従来から実験室的に行わ
れている手抄き装置を使用する抄き合わせ法により２層
シートを作製した。すなわち、まず初めに標準的な手抄
き操作によってワイヤ上に下層となるラワンＢＫＰの湿
紙を形成させ、抄き取り濾紙を重ねてフーチングしたあ
と、抄き上げた０次いで、表層となるブナＢＫＰの湿紙
をワイヤ上に形成させラワンＢＫＰの湿紙の付着した濾
紙をその上に重ねてフーチングし、２層となった湿紙を
抄き上げた。常法に従ってプレスし、乾燥したのち、印
刷試験に供した。印刷条件は印刷速度が１ 、２５＋＋
＋ ／ ｓｅｃであることの他は、実施例１と同じであ
る。得られた結果を第５表に示す。Example 4 Buna BKP was used as the surface pulp (PF at a pulp concentration of 5%).
I-mill beaten. Freeness 395III, using lauan B K P (5% concentration beaten, freeness 375ml) as the lower layer pulp, a two-layer sheet is made by a method of combining paper using a hand-sheeting device that has been conventionally carried out in the laboratory. was created. That is, first, a wet paper of lauan BKP as the lower layer is formed on the wire by standard hand-sheeting operation, and after stacking and footing with a filter paper to remove the paper, the wet paper of lauan BKP as the surface layer is formed on the wire. A wet paper of BKP was formed on a wire, a filter paper to which the wet paper of Lauan BKP was attached was stacked on top of it, and a footing was made to form a two-layered wet paper. After pressing and drying according to a conventional method, it was subjected to a printing test. Printing conditions are printing speed 1, 25++
It is the same as Example 1 except that +/sec. The results obtained are shown in Table 5.
第５表
第５表から明らかなように、実施例１〜３と異なる従来
法の抄き合わせ法によっても、表層パルプ厚さがＩｇ／
ｃｄでは道管ムケ数は約５分の１まで減少し、２ｇ／
ｎｌでは２５分の１に低下した。Table 5 As is clear from Table 5, the surface pulp thickness was Ig/
In CD, the number of canal rashes decreased to about one-fifth, and 2 g/
In nl, it decreased to 1/25.
抄紙方法が異なっても紙層構造を実施例１〜３と同様に
することで実質的に道管ムケを防止することができる。Even if the paper making method is different, by making the paper layer structure similar to Examples 1 to 3, vessel swelling can be substantially prevented.
ただし、この抄紙方法では抄き合わせ面での繊維の絡み
合いがないため印刷速度を上げることなどで印刷条件を
苛酷にすると眉間剥離が起きやすいという欠点が認めら
れた。However, with this papermaking method, there is no entanglement of fibers on the papermaking surface, so if the printing conditions are made harsher by increasing the printing speed, it is easy to cause glabella peeling.
実施例５
手抄き装置を使用してワイヤ上に下層となるラワンＢＫ
Ｐ（１０％濃度叩解、フリーネス４００ｗＩＩ！ ）の
湿紙を形成させ、抄き取り濾紙を重ねてフーチングした
あと、抄き上げた０次いで、ラワンＢＫＰの湿紙の付着
した濾紙をプフナー濾斗に乗せ、アスピレータ−で減圧
し吸引しながらブナＢＫＰ（１０％濃度叩解、フリーネ
ス３１５ｍ ｌ！ ）の希薄サスペンションを吹き付け
て表層部分を形成させた。Example 5 Lauan BK as the lower layer on the wire using a hand-sheeting device
P (10% concentration beaten, freeness 400wII!) wet paper was formed, and the filter paper was piled up and footed, and then the filter paper with the wet paper of Lauan BKP attached was placed in a Puchner funnel. A dilute suspension of Buna BKP (beaten at 10% concentration, freeness 315 ml!) was sprayed on the surface while vacuuming and suctioning with an aspirator to form a surface layer.
この２層構造をもつ湿紙を常法に従ってプレスし乾燥し
たのち、実施例４と同じ条件で印刷試験に供した。得ら
れた結果を第６表に示す。This two-layered wet paper was pressed and dried according to a conventional method, and then subjected to a printing test under the same conditions as in Example 4. The results obtained are shown in Table 6.
第６表
第６表から明らかなように、実施例１〜３（多層抄き）
および実施例４ （抄き合わせ）と異なる、多層構造を
もつ手抄きシートの調製法によっても、表層バルブ厚さ
が２８／ｒｒｌでは道管ムケの数は１０分の１以下に低
下した。Table 6 As is clear from Table 6, Examples 1 to 3 (multilayer papermaking)
Even when a method for preparing a handmade sheet with a multilayer structure different from that in Example 4 (combined paper) was used, the number of ductal flakes was reduced to one-tenth or less when the surface bulb thickness was 28/rrl.
抄紙方法が異なっても紙の構造を実施例１〜４と同様に
することで実質的に道管ムケを防止することができる。Even if the paper making method is different, by making the paper structure similar to Examples 1 to 4, vessel swelling can be substantially prevented.
ただし、この抄紙方法では実施例４と同様に眉間剥離が
起きやすいという欠点が認められた。However, similar to Example 4, this papermaking method had a drawback in that peeling between the eyebrows was likely to occur.
出願人 株式会社日本紙パルプ研究所
代理人 宮 １） 広 豊
手続補正書 ８
昭和６１年８月１）日
２、発明の名称 多層構造を有する印刷用紙及び塗工
原紙３、補正をする者
事件との関係 特許出願人
名 称 株式会社日本紙バルブ研究所４、代理人
住 所 東京都港区東新橋２丁目７番７号新橋国際ビル
５、補正命令の日付 自発
６、補正により増加する発明の数
。補正の内容
明細書を下記のとおり補正する。Applicant: Japan Paper and Pulp Research Institute Co., Ltd. Agent Miya 1) Hirototaka Procedural Amendment 8 August 1985 1) Day 2 Title of invention Printing paper and coated base paper having a multilayer structure 3 Case made by the person making the amendment Relationship with Patent applicant Name: Nippon Paper Valve Research Institute 4, Agent address: 5 Shinbashi Kokusai Building, 2-7-7 Higashi-Shinbashi, Minato-ku, Tokyo, Date of amendment order: Voluntary action 6, Invention increase due to amendment number. The statement of contents of the amendment will be amended as follows.
（１）第３頁第１）行目に「広葉樹林」とあるを「広葉
樹材」と補正する。(1) On page 3, line 1), the phrase "broad-leaved forest" is corrected to read "broad-leaved wood."
（２）第５頁第１０行に「ペーパー」とあるを「ペーパ
ー」と補正する。(2) In the 10th line of page 5, the word "paper" is corrected to "paper."
（３） 第１２頁表１における試験番号６の欄に「ぶ
な」とあるを「ブナ」と補正する。(3) In the column of test number 6 in Table 1 on page 12, the word "beech" should be corrected to "beech".
（４） 第１８頁第９行に「（フリーネス４０５ｍ
ｌ ）下層」とあるを「（フリーネス４０５ｍ ｌ！
）を下層」と補正する。(4) On page 18, line 9, “(Freeness 405m
l) Lower layer” is replaced with “(freeness 405ml l!
) is corrected as "lower layer".
（５）第２１頁表４の中欄の説明に「厚さ厚さ」とある
を「厚さ」と補正する。(5) In the explanation in the middle column of Table 4 on page 21, the phrase "thickness" is corrected to "thickness."
Claims (2)
起すパルプからなる層の上に、道管要素を有しないか、
もしくは印刷に際して実質上道管ムケを起さないパルプ
からなる印刷面としての表層を被覆して形成して成る構
造を有することを特徴とする多層構造を有する印刷用紙
及び塗工原紙。(1) Does not contain vessel elements on a layer made of pulp that contains vessel elements and causes vessel swelling during printing;
Alternatively, printing paper and coated base paper having a multilayer structure are characterized in that they are formed by covering a surface layer as a printing surface made of pulp that does not substantially cause vascular swollen during printing.
さに被覆する特許請求の範囲第（１）項記載の印刷用紙
及び塗工原紙。(2) The printing paper and coated base paper according to claim (1), wherein the surface layer which becomes the printing surface is coated with a thickness of at least about 1 g/m^2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13314486A JPS62289697A (en) | 1986-06-09 | 1986-06-09 | Printing paper and coated paper having multilayer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13314486A JPS62289697A (en) | 1986-06-09 | 1986-06-09 | Printing paper and coated paper having multilayer structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62289697A true JPS62289697A (en) | 1987-12-16 |
| JPH0246720B2 JPH0246720B2 (en) | 1990-10-17 |
Family
ID=15097762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13314486A Granted JPS62289697A (en) | 1986-06-09 | 1986-06-09 | Printing paper and coated paper having multilayer structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62289697A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03180599A (en) * | 1989-12-07 | 1991-08-06 | Jujo Paper Co Ltd | Recording paper composed of plural layers |
| US6335102B1 (en) * | 1997-02-20 | 2002-01-01 | Mitsubishi Paper Mills Ltd. | Support for imaging material |
| JP2010502853A (en) * | 2006-09-11 | 2010-01-28 | アムーレアル オサケ ユキチュア ユルキネン | Method for manufacturing a textile product |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58156095A (en) * | 1982-02-23 | 1983-09-16 | ファルメット ペーパー マシーナリー インコーポレーテッド | Production of multilayered paper |
| JPS58208486A (en) * | 1982-05-25 | 1983-12-05 | 澤田 多茂治 | Wallpaper |
-
1986
- 1986-06-09 JP JP13314486A patent/JPS62289697A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58156095A (en) * | 1982-02-23 | 1983-09-16 | ファルメット ペーパー マシーナリー インコーポレーテッド | Production of multilayered paper |
| JPS58208486A (en) * | 1982-05-25 | 1983-12-05 | 澤田 多茂治 | Wallpaper |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03180599A (en) * | 1989-12-07 | 1991-08-06 | Jujo Paper Co Ltd | Recording paper composed of plural layers |
| US6335102B1 (en) * | 1997-02-20 | 2002-01-01 | Mitsubishi Paper Mills Ltd. | Support for imaging material |
| JP2010502853A (en) * | 2006-09-11 | 2010-01-28 | アムーレアル オサケ ユキチュア ユルキネン | Method for manufacturing a textile product |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0246720B2 (en) | 1990-10-17 |
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| Date | Code | Title | Description |
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| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
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