JPS6142040B2 - - Google Patents
Info
- Publication number
- JPS6142040B2 JPS6142040B2 JP5673077A JP5673077A JPS6142040B2 JP S6142040 B2 JPS6142040 B2 JP S6142040B2 JP 5673077 A JP5673077 A JP 5673077A JP 5673077 A JP5673077 A JP 5673077A JP S6142040 B2 JPS6142040 B2 JP S6142040B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- paper
- oil
- coating
- dispersion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 229920005989 resin Polymers 0.000 claims description 25
- 239000011347 resin Substances 0.000 claims description 25
- 239000006185 dispersion Substances 0.000 claims description 21
- 239000005871 repellent Substances 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 10
- 229920003002 synthetic resin Polymers 0.000 claims description 8
- 239000000057 synthetic resin Substances 0.000 claims description 8
- 229920001169 thermoplastic Polymers 0.000 claims description 8
- 239000004416 thermosoftening plastic Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 230000002745 absorbent Effects 0.000 claims description 5
- 239000002250 absorbent Substances 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000003672 processing method Methods 0.000 claims description 4
- 239000012466 permeate Substances 0.000 claims description 2
- 239000000123 paper Substances 0.000 description 26
- 238000000576 coating method Methods 0.000 description 19
- 238000000034 method Methods 0.000 description 17
- 239000011248 coating agent Substances 0.000 description 16
- -1 polyethylene Polymers 0.000 description 12
- 230000002940 repellent Effects 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000004519 grease Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000007765 extrusion coating Methods 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229920000554 ionomer Polymers 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004034 viscosity adjusting agent Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920001986 Vinylidene chloride-vinyl chloride copolymer Polymers 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000007754 air knife coating Methods 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007763 reverse roll coating Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Paper (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Description
本発明は紙の加工法に関し、さらに詳しくは紙
等の平板状吸収性シート素材に撥水・撥油剤の水
または有機溶媒剤及びこれらの混合物を溶媒とす
る溶液またはエマルジヨンをビヒクルとして、該
溶媒中に室温で不活性な熱可塑性合成樹脂粉末を
分散させた分散混合液を塗布し、あるいはその後
直ちに塗布面を加熱しつつ反対面より吸収して撥
水、撥油剤を紙中に浸透・定着させ、粉末樹脂を
表面に分離させ溶融皮膜化させることを特徴とす
る紙の表面加工法に関するものであつて、その目
的とするところは水、油、有機薬品の浸透に対す
る良好な遮へい性と共に熱融着性（ヒート・シー
ル性）を紙等に付与することにある。
以下実施例に基づき詳細に説明する。
一般に紙等に耐水・耐油性と共に熱融着性を与
える為には従来から各種の加工法が用いられて来
た。このような方法としてはポリエチレン、ポリ
プロピレン、アイオノマー等の熱可塑性合成樹脂
を溶融・混練して一定厚のフイルム状にして紙上
に直接押出し塗工する方法、又はエチレン−酢酸
ビニル共重合体、アクリル酸エステル共重合体、
塩化ビニリデン−塩化ビニル共重合体、アイオノ
マー等のエマルジヨン又はデイスパージヨンを紙
上に塗工し皮膜化させる方法等があり、さらにま
たフツ素系、シリコーン系、クロム錯塩系等の撥
水・撥油剤で紙等を処理したのち熱融着性の樹脂
皮膜をその上に施す等の方法も用いられている。
これらの従来から知られている方法はそれぞれ多
くの利点を有するもの、押出し塗工法においては
使用出来る樹脂が限定され、また有効な耐水・耐
油性を与える為には15〜20μ、場合によつてはそ
れ以上の膜厚が要求される。また、エマルジヨ
ン、デイスパージヨンの塗工においてはピンホー
ルをさける為に２度塗り等の操作を必要とする等
の欠点を有し、完全な皮膜が得られた場合におい
ても使用時の折りまげ、傷つき等により簡単にそ
の耐水・耐油性が失なわれるといつた危険もあ
る。また、シリコーン樹脂、フツ素系樹脂で処理
した紙はその表面エネルギーの低い事からポリエ
チレン、ポリプロピレン等の熱融着性フイルムの
ラミネートがむずかしく、塩化ビニリデン共重合
体デイスパージヨンの塗工においてもその撥水性
等から均一塗工が困難である等の欠点を有する。
さらにまた、粉末状のポリエチレン、ポリプロ
ピレン等の樹脂を、水または有機溶剤等の溶媒中
に分散してデイスパージヨンとなし、ヒートシー
ル性や耐水性等を与えるコーテイング剤として使
用することは公知であり、押出し塗工法や接着剤
によるフイルムラミネート法にくらべてきわめて
軽量なコーテイング・ラミネーシヨンが可能で、
一般の塗工剤と同様に断続的なシートや不規則な
表面にもコーテイングできるといつた利点があ
る。しかしながらこの方法で加工した紙は耐油・
耐脂性等に欠け、特に折り曲げ、グリーズ加工に
よつてその耐性が極端に低下する等の問題があ
る。
本発明は上記した種々の加工法の欠点を有効に
除去すると共に、上記粉末樹脂デイスパージヨン
塗工法の利点に注目して工程数を増やさずに紙等
に有効な耐水、耐油性を与え、かつ熱融着性・熱
可塑性合成樹脂のラミネーシヨンを一挙に行なう
ことを追求し完成したものである。
すなわち、紙等の多孔質吸収性平板状素材に、
紙中に浸透・付着する撥水・撥油性物質の水また
は有機溶剤及びそれらの混合物を溶媒とする溶液
またはエマルジヨンをビヒクルとして、その中に
それらの溶媒とは室温において不活性な（溶解し
ない）熱可塑性合成樹脂粉末を分散させた分散混
合液を塗布し、その後直ちに反対面より吸引しつ
つ塗布面を熱可塑性合成樹脂の融点以上の温度で
加熱して撥水、撥油剤を紙中に浸透・定着させ、
粉末状樹脂を表面に分離させつつ溶融皮膜化させ
るのである。
本発明において用いられる紙としてはノーコー
トのクラフト紙、上質紙、板紙等それ自身は水、
油等をはじかず透気性の大きなものが望ましい。
またデイスパージヨンビヒクルとしての撥水・撥
油剤としては、パーフルオロアルキル基を側鎖に
もつ重合性モノマーと各種コモノマーとの共重合
体、及びそれらのクロム錯化合物等のフツ素系化
合物の有機溶剤または水及びこれらの混合物を溶
媒とする溶液、エマルジヨンまたポリシロキサン
及びポリシロキサンと他のモノマー、コモノマー
との共重合体等のシリコーン系化合物等が挙げら
れ、それらは使用に際してあらかじめもとめる耐
水・耐油性に対応する濃度に稀釈しておく。
上記ビヒクル中に分散すべき粉末状の熱可塑性
合成樹脂としては、ポリエチレン、ポリプロピレ
ン、エチレン−プロピレン共重合体、エチレン−
アクリル酸共重合体、エチレン−酢酸ビニル共重
合体、プロピレン−アクリル酸共重合体、アイオ
ノマー、12−ナイロン、11−ナイロン及びポリア
ミド共重合体等が挙げられ、その粉末粒径は
35Mesh以下好ましくは100Mesh以下で５μ以上
のものが良好である。粉末粒径が35Mesh以上の
場合デイスパージヨン化した場合の液の安定性及
び塗布作業性に問題があり、また５μ以下の場合
吸引時に粉末樹脂そのものが紙中に入り込んで表
面に有効な皮膜が分離形成されない。また作業上
の取り扱いがきわめて困難で浮遊粒子の補集が困
難になる等の問題がある。これら粉末樹脂はデイ
スパージヨンの安定性、流動性をはじめとする塗
布適性の点で真球に近いものが好ましいがかなら
ずしもそれに限定されない。
ビヒクルと粉末樹脂のデイスパージヨン化にお
いてその粉末樹脂は室温においてビヒクル溶媒に
溶解されず、塗工の最終段階で加熱容融を受ける
までそのままの形状を保つことが本発明では重要
な点であり、この点ではポリエチレン、ポリプロ
ピレン等のポリオレフイン系樹脂が特に望まし
い。また樹脂の溶融温度は基材としての紙の溶融
または分解温度より低い事が求められるのは言う
までもなく、皮膜形成性、熱融着性からメルトイ
ンデツクスの高いものが好ましい。
本発明におけるデイスパージヨンの調整は従来
から知られている方法で可能であり、単純な撹
拌、ボールミル等での軽度の混合操作で十分であ
る。粉末樹脂はビヒクル総量に対して10〜70重量
％添加するのが良く、10重量％以下では塗布され
る樹脂量が少く良好な皮膜が得られず十分なヒー
トシール強度は得られない。また70重量％を越え
るとデイスパージヨンの粘度上昇によつて塗布が
困難となるだけでなく、本発明で言うビヒクルと
粉末樹脂の有効な分離が得られず、紙中への撥
水、撥油剤の浸透が不十分で良好な耐性が得られ
ない。なおこの分散液中には粉末とビヒクルとの
ぬれを良くするあるいは撥水、撥油剤の浸透分離
を促進する為の活性剤、粉末の浮上又は沈降を防
止する為の粘度調整剤、塗工時の泡立ちを防止す
る為の消泡剤を加える事ができる。
上記の様にして調整された分散液は、撥水・撥
油剤が微細に分散または溶解している溶媒中に相
対的に大きな熱可塑性樹脂の粒子が浮遊している
いわゆる粗大分散系であるが上記説明の範囲で調
整したものは、従来から使われているグラビアイ
ンキ、ラツカー、塗工用ラテツクス等と同様な方
法での塗工が可能であり、塗工方法としては、グ
ラビアコート、３本ロールコート、リバースロー
ルコート、エアーナイフコート、ブレードコー
ト、カーテンフローコート等が使用可能である。
紙の表面に塗布された該分散液は、その溶媒が
本来粉末樹脂に対して不活性である為に容易に分
離しやすく塗布後直ちに多孔質で吸収性の素材に
浸透を開始するが、素材の不均一性等の影響もあ
つて浸透が一定でなくさらに加熱による表面から
の溶媒離脱効果も手伝つて十分な浸透深さが得ら
れない。この為本発明においては塗布面の反対面
から軽く吸収しつつ表面を加熱し、さらに樹脂の
融点以上の温度にまで加熱することにより、撥
水、撥油剤を樹脂と有効に分離させて紙に浸透定
着させ、同時に、基材と強固に接着した樹脂皮膜
が得られる。本発明の方法によるとビヒクル中に
樹脂粉末を基材に接着させる為のバインダーを添
加しないでも基材と強固な接着力をもつた樹脂皮
膜層が形成可能でありこの点でも有効なラミネー
シヨンと言える。
以下その具体的な一実施例を示す。
実施例
フローセンUF−80（製鉄化学工業株式会社）
40重量％
スコツチバンFC−805：IPAの30％溶液（住友ス
リーＭ株式会社） ５重量％
水 54重量％
フロラードFC−430：フツ素系界面活性剤（住友
スリーＭ株式会社） １重量％
上記組成の分散液を第１図に示す装置を用いて
未晒クラフト紙58ｇ/m2に版深60μのグラビア版
を用いて塗布した。塗布条件は塗工速度18m/mi
ｎ、吸引部圧120mmHg、最高加熱温度150℃であつ
たが、このときの塗布量は5.3ｇ/m2程度であつ
た。
上記組成においてスコツチバン−FC−805を、
IPAに、フロラードFC−430をエパン−485：非
イオン系界面活性剤（第一工業製薬株式会社）に
おきかえて吸引せず、他は同一の条件で塗布した
ところ塗布量は4.9ｇ/m2程度であつた。１および
２により得た塗布加工紙について撥水性、撥油性
およびヒートシール性を測定した結果第１表を得
た。
The present invention relates to a paper processing method, and more specifically, the present invention relates to a method for processing paper, and more specifically, a method for processing paper, in which a solution or emulsion containing water or an organic solvent as a water repellent or an organic solvent, or a mixture thereof as a vehicle, is applied to a flat absorbent sheet material such as paper. A dispersion mixture containing inert thermoplastic synthetic resin powder dispersed at room temperature is applied, or immediately after that, the applied side is heated and absorbed from the opposite side to penetrate and fix the water and oil repellent into the paper. This paper surface treatment method is characterized by separating powdered resin on the surface and forming a molten film.The purpose of this method is to provide good shielding properties against the penetration of water, oil, and organic chemicals, as well as to provide thermal protection. Its purpose is to impart fusibility (heat sealability) to paper, etc. A detailed explanation will be given below based on examples. In general, various processing methods have been used to impart water resistance, oil resistance, and thermal adhesive properties to paper and the like. Such methods include melting and kneading thermoplastic synthetic resins such as polyethylene, polypropylene, and ionomers to form a film of a certain thickness and directly extruding it onto paper, or using ethylene-vinyl acetate copolymer, acrylic acid, etc. ester copolymer,
There are methods such as coating emulsion or dispersion of vinylidene chloride-vinyl chloride copolymer, ionomer, etc. on paper to form a film, and also water/oil repellents such as fluorine-based, silicone-based, chromium complex salt-based, etc. Other methods have also been used, such as treating paper or the like with water and then applying a heat-fusible resin film thereon.
Each of these conventionally known methods has many advantages; however, in the extrusion coating method, the resins that can be used are limited, and in order to provide effective water and oil resistance, it is necessary to requires a larger film thickness. In addition, emulsion and dispersion coatings have drawbacks such as the need to apply two coats to avoid pinholes, and even if a complete film is obtained, folding during use may occur. There is also the danger that the water and oil resistance may be easily lost due to scratches, etc. In addition, paper treated with silicone resins and fluorocarbon resins has a low surface energy, making it difficult to laminate with heat-fusible films such as polyethylene and polypropylene. It has drawbacks such as difficulty in uniform coating due to its water repellency. Furthermore, it is known that powdered resins such as polyethylene and polypropylene are dispersed in a solvent such as water or an organic solvent to form a dispersion and used as a coating agent to provide heat sealability, water resistance, etc. This allows for extremely lightweight coating and lamination compared to extrusion coating methods and film lamination methods using adhesives.
It has the advantage of being able to coat intermittent sheets and irregular surfaces in the same way as general coatings. However, paper processed using this method is oil-resistant and
There is a problem that it lacks grease resistance, and its resistance is extremely reduced especially when subjected to bending and greasing. The present invention effectively eliminates the drawbacks of the various processing methods described above, and focuses on the advantages of the powder resin dispersion coating method to impart effective water and oil resistance to paper without increasing the number of steps. It was completed in the pursuit of laminating heat-fusible and thermoplastic synthetic resins all at once. That is, on a porous absorbent flat material such as paper,
A solution or emulsion of a water-repellent or oil-repellent substance that permeates and adheres to paper using water, an organic solvent, or a mixture thereof as a solvent is used as a vehicle, and the solvent is inert (does not dissolve) at room temperature. A dispersion mixture containing thermoplastic synthetic resin powder is applied, and then the applied surface is heated to a temperature above the melting point of the thermoplastic synthetic resin while immediately suctioning it from the opposite side, allowing the water and oil repellent to penetrate into the paper.・Let it settle,
The powdered resin is separated on the surface and formed into a molten film. Examples of paper used in the present invention include uncoated kraft paper, high-quality paper, paperboard, etc.
A material that does not repel oil and has high air permeability is desirable.
In addition, water and oil repellents used as dispersion vehicles include copolymers of polymerizable monomers with perfluoroalkyl groups in their side chains and various comonomers, and organic compounds of fluorine-based compounds such as their chromium complex compounds. Examples include solutions using solvents or water and mixtures thereof, emulsions, and silicone compounds such as polysiloxane and copolymers of polysiloxane and other monomers and comonomers. Dilute to the concentration appropriate for your gender. Powdered thermoplastic synthetic resins to be dispersed in the vehicle include polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-
Examples include acrylic acid copolymer, ethylene-vinyl acetate copolymer, propylene-acrylic acid copolymer, ionomer, 12-nylon, 11-nylon, and polyamide copolymer, and the powder particle size is
35Mesh or less, preferably 100Mesh or less, and 5μ or more are good. If the powder particle size is 35 Mesh or more, there will be problems with the stability of the liquid and application workability when it is made into a dispersion, and if it is less than 5 μm, the powder resin itself will enter the paper during suction and an effective film will not be formed on the surface. No separation is formed. Further, there are problems such as it is extremely difficult to handle during work and it becomes difficult to collect floating particles. These powdered resins are preferably close to true spheres in terms of dispersion stability, fluidity and other coating suitability, but are not necessarily limited thereto. In the dispersion of vehicle and powdered resin, it is important in the present invention that the powdered resin is not dissolved in the vehicle solvent at room temperature and maintains its shape until heated and melted in the final stage of coating. In this respect, polyolefin resins such as polyethylene and polypropylene are particularly desirable. It goes without saying that the melting temperature of the resin is required to be lower than the melting or decomposition temperature of the paper used as the base material, and resins with a high melt index are preferred from the viewpoint of film-forming properties and thermal fusion properties. The dispersion in the present invention can be prepared by conventionally known methods, and simple stirring or light mixing using a ball mill or the like is sufficient. The powdered resin is preferably added in an amount of 10 to 70% by weight based on the total amount of the vehicle; if it is less than 10% by weight, the amount of resin applied is too small to form a good film and sufficient heat seal strength cannot be obtained. Moreover, if it exceeds 70% by weight, not only will the viscosity of the dispersion increase, making it difficult to apply it, but also the effective separation of the vehicle and powder resin referred to in the present invention will not be achieved, and water repellency and repellency in the paper will not be achieved. Penetration of oil is insufficient and good resistance cannot be obtained. In addition, this dispersion liquid contains an activator to improve wetting of the powder and vehicle or to promote permeation and separation of water and oil repellents, a viscosity modifier to prevent the powder from floating or settling, and a viscosity modifier to prevent the powder from floating or settling. Antifoaming agents can be added to prevent foaming. The dispersion prepared as described above is a so-called coarse dispersion system in which relatively large thermoplastic resin particles are suspended in a solvent in which the water/oil repellent is finely dispersed or dissolved. Products adjusted within the range described above can be coated using the same methods as conventionally used gravure inks, lacquers, coating latexes, etc. The coating methods include gravure coating, 3-coating, etc. Roll coating, reverse roll coating, air knife coating, blade coating, curtain flow coating, etc. can be used. The dispersion applied to the paper surface is easily separated because its solvent is inherently inert to the powdered resin, and begins to penetrate into the porous and absorbent material immediately after application. Penetration is not constant due to the effects of non-uniformity, and furthermore, due to the effect of solvent removal from the surface due to heating, a sufficient penetration depth cannot be obtained. For this reason, in the present invention, the water and oil repellent is effectively separated from the resin by heating the surface while lightly absorbing it from the opposite side of the coated surface, and further heating it to a temperature above the melting point of the resin. At the same time, a resin film that firmly adheres to the base material is obtained. According to the method of the present invention, it is possible to form a resin film layer that has strong adhesion to the base material without adding a binder to the vehicle to bond the resin powder to the base material, and in this respect, it is also an effective lamination method. I can say it. A specific example will be shown below. Example Frosene UF-80 (Steel Chemical Industry Co., Ltd.)
40% by weight Scotchiban FC-805: 30% solution of IPA (Sumitomo Three M Co., Ltd.) 5% by weight Water 54% by weight Florado FC-430: Fluorine surfactant (Sumitomo Three M Co., Ltd.) 1% by weight Above composition The dispersion was applied to unbleached kraft paper at 58 g/m 2 using a gravure plate with a plate depth of 60 μm using the apparatus shown in FIG. Coating conditions are coating speed 18m/mi
The suction pressure was 120 mmHg, and the maximum heating temperature was 150° C., and the coating amount at this time was about 5.3 g/m 2 . Scottiban-FC-805 in the above composition,
When IPA was replaced with Florado FC-430 and Epan-485: a nonionic surfactant (Daiichi Kogyo Seiyaku Co., Ltd.) and applied without suction, the coating amount was 4.9 g/m 2 under the same conditions. It was moderately hot. The water repellency, oil repellency and heat sealability of the coated papers obtained in 1 and 2 were measured and Table 1 was obtained.
【表】
以上示した様に本発明によれば、実用的な耐
水・耐油を持つと同時に低PE塗布量にもかかわ
らず十分なヒートシールを持ち、特に包装として
の実用性に関係するグリーズ、折り曲げ部の耐性
低下がみられない等多大の卓越点がある。
本発明によつて加工した紙は従来の押出し塗工
法の半分以上の樹脂量であつても良好な耐水・耐
油性及び十分なヒートシール強度を示し、従来の
粉末樹脂のみのデイスパージヨン塗工では得られ
なかつた折り曲げ、グリーズ加工でもその耐性の
低下がない良好なシートが得られ、本発明により
加工された紙はその良好な耐水、耐油性と熱融着
性を合わせ持つことから、水、油等を含む食品の
包装材料を始めグリーズ等の付着した機械類の包
装ならびに水、油、有機薬品をあつかう際に使用
する作業着等にきわめて有効であり、本発明の産
業上の価値は非常に高いと言える。[Table] As shown above, according to the present invention, it has practical water resistance and oil resistance, as well as sufficient heat sealing despite the low amount of PE applied, and is particularly suitable for greases that are related to practicality as packaging. There are many outstanding points such as no decrease in durability at the bent part. Paper processed according to the present invention exhibits good water and oil resistance and sufficient heat-sealing strength even when the amount of resin is more than half of the conventional extrusion coating method, and can be applied using dispersion coating using only powdered resin. It is possible to obtain a sheet with excellent resistance to bending and grease processing, which could not be achieved with conventional methods, and the paper processed by the present invention has good water resistance, oil resistance, and thermal adhesiveness, so it is suitable for water and grease processing. The industrial value of the present invention is that it is extremely effective for food packaging materials containing oil, packaging for machinery with grease, etc., and work clothes used when handling water, oil, and organic chemicals. It can be said that it is very high.
第１図は本発明の一実施例を示すものである。
１……分散混合液、２……ナイフ、３……減圧
部、４……熱供給部、５……冷却ロール、６……
分散混合液供給ロール、７……補助ロール、８…
…給紙ロール、９……巻きとりロール。
FIG. 1 shows an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Dispersion liquid mixture, 2... Knife, 3... Pressure reduction part, 4... Heat supply part, 5... Cooling roll, 6...
Dispersion mixture supply roll, 7... Auxiliary roll, 8...
...Paper feed roll, 9...Take-up roll.
Claims (1)
に浸透・吸着し得る撥水・撥油性物質の水または
有機溶剤及びこれらの混合物を溶媒とする溶液ま
たはエマルジヨンをビヒクルとして、該ビヒクル
中にこれら溶媒とは室温において不活性な（溶解
しない）粒径５μ以上の熱可塑性合成樹脂粉末を
分散させて調整した分散混合液を塗布し、その後
直ちに反対面より吸引しつつ分配させ、塗布面を
該熱可塑性合成樹脂の融点以上の温度で加熱し、
撥水・撥油性物質を紙中に浸透・定着させ表面に
分離した粉末状樹脂を溶融皮膜化させることを特
徴とする吸収性素材の加工法。1. A porous absorbent sheet material such as paper is coated with a solution or emulsion of a water-repellent/oil-repellent substance that can permeate and adsorb into the material, using water or an organic solvent, or a mixture thereof as a solvent, in the vehicle. A dispersion mixture prepared by dispersing thermoplastic synthetic resin powder with a particle size of 5 μm or more, which is inert (does not dissolve) at room temperature with these solvents, is applied to the surface, and then immediately distributed while being sucked from the opposite side. heated at a temperature higher than the melting point of the thermoplastic synthetic resin,
A processing method for absorbent materials characterized by infiltrating and fixing water- and oil-repellent substances into paper and melting the separated powdered resin on the surface to form a film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5673077A JPS53143716A (en) | 1977-05-17 | 1977-05-17 | Processing of absorbable material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5673077A JPS53143716A (en) | 1977-05-17 | 1977-05-17 | Processing of absorbable material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53143716A JPS53143716A (en) | 1978-12-14 |
| JPS6142040B2 true JPS6142040B2 (en) | 1986-09-18 |
Family
ID=13035612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5673077A Granted JPS53143716A (en) | 1977-05-17 | 1977-05-17 | Processing of absorbable material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS53143716A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4578826A (en) * | 1983-12-28 | 1986-04-01 | Pall Corporation | Process for the manufacture of protective hand coverings |
| US4564552A (en) * | 1983-12-28 | 1986-01-14 | Pall Corporation | Gas permeable, water and oil resistant composite structure |
| FI115732B (en) * | 2003-06-05 | 2005-06-30 | Metso Paper Inc | Method and apparatus for surface sizing of paper or board |
-
1977
- 1977-05-17 JP JP5673077A patent/JPS53143716A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53143716A (en) | 1978-12-14 |
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