KR870001578B1 - The method for preparing neutral paper - Google Patents

The method for preparing neutral paper Download PDF

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Publication number
KR870001578B1
KR870001578B1 KR1019850005354A KR850005354A KR870001578B1 KR 870001578 B1 KR870001578 B1 KR 870001578B1 KR 1019850005354 A KR1019850005354 A KR 1019850005354A KR 850005354 A KR850005354 A KR 850005354A KR 870001578 B1 KR870001578 B1 KR 870001578B1
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paper
pulp
neutral
filler
sodium bicarbonate
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KR1019850005354A
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Korean (ko)
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KR870001365A (en
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강순석
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주식회사 삼일공사
강순석
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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H3/00Paper or cardboard prepared by adding substances to the pulp or to the formed web on the paper-making machine and by applying substances to finished paper or cardboard (on the paper-making machine), also when the intention is to impregnate at least a part of the paper body

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Abstract

A manufacturing method for thin neutral paper has process such as 1) adding sodium bicarbonate to pulp for solution; 2) addmixing calcium carbonate as filler 3) adding an oil solution of alkyl succinic anhydride dispersed into positive ionic starch derivatives as waterproof agent. The waterproof agent may be replaced by the mixture of alkyl ketene dimer, denaturalized derivatives of positive ionic acrylamide, and polyacrylamide polyamine resin. According to the invention, the quaity is improved to enhance the tear and burst strength of the paper with good absorption of ink and prevent discoloration and deterioration.

Description

중성(中性)박엽지의 제조방법Manufacturing method of neutral thin paper

본 발명의 인쇄나 필기에 적합한 중성 박엽지를 제조함에 있어서, 펌프에 중탄산 나트륨을 투입하여 고해하고 이에 종이의 충전제로써 탄산칼슘을 이용하며, 내수제로써 알키릴 호박산 무수물(Alkyrl Succinic Anhydride)을 양이온 전분 유도체에 분산시킨 유액, 또는 알킬 케텐 다이머(Alkyl Keten Dimer)와 양이온 변성 아크릴 아마이드 및 폴리아미드 폴리아민 수지를 사용하여 초지함을 특징으로 한 중성 박엽지의 제조방법에 관한 것으로 이는 종이의 인열강도와 파열강도가 높고 백색도와 불투명도 및 잉크의 흡수성이 양호하여 인쇄나 필기에 적합하며 문서 보관에 있어서 영구적으로 지질의 변색변질이 없는 중성지를 얻으려는데 본 발명의 목적이 있다.In producing a neutral thin paper suitable for printing or writing of the present invention, the sodium bicarbonate is added to the pump for confession, and calcium carbonate is used as a filler of paper, and an alkyl succinic anhydride is used as a water-resistant agent for cationic starch. The present invention relates to a method for producing a neutral thin paper, which is made of paper using an emulsion dispersed in a derivative, or an alkyl keten dimer, a cation-modified acrylamide, and a polyamide polyamine resin. It is an object of the present invention to obtain a neutral paper having high whiteness, opacity and good absorbency of ink, suitable for printing or writing, and permanently free from discoloration of lipids in document storage.

종래의 일반적인 인쇄용지나 필기용지는 황산염, 또는 아황산법으로 제조된 펄프를 그대로 사용하여 제조하였으나 종이의 충전제로는 주로 활석(Talc)을 사용하였기 때문에 종이의 불투명도와 잉크의 흡수성이 양호하지 못하여 인쇄의 적성이 미흡하고, 또한 종이의 내수성을 위하여 내수제로써 송진(Rosin)을 비누화한 로진 싸이즈제를 사용하였기 때문에 이 싸이즈제의 정착을 위하여 강한 산성인 황산 알루미늄을 사용할 수 밖에 없었고 이렇게 된 종이는 자연히 강한 산성 성분이 남게 되어 pH 4.5-5.5 정도의 산성지가 되어서 얼마않가 산성분에 의하여 종이질이 변색, 변질이 심하게 되어서 각종 문헌자료의 인쇄를 하여도 영구보전이 어려운 문제점이 있었다.Conventional printing paper or writing paper is manufactured using sulphate or pulp prepared by the sulfurous acid method as it is, but since the talc is mainly used as a filler of paper, the opacity of the paper and the absorbency of the ink are not good. Due to the lack of aptitude and the use of rosin size saponified rosin as a water-resistant agent for the water resistance of the paper, strong acidic aluminum sulfate was required for the settlement of this size. The strong acidic components remained in acidic paper at pH 4.5-5.5. Soon the paper was discolored and deteriorated due to acidic components.

본 발명은 이러한 산성지의 문제점을 시정하기 위하여 화학적 펄프나 쇄목펄프를 사용하여 중성지를 제조함에 있어서, 지료의 첨가제로써 산성물질을 전적으로 배제하고 오직 중성상태로 제지함으로써 종이질의 가장 결점인 변색, 변질이 없고 종이의 인열강도가 높으며 종이의 백색도, 불투명도가 양호할 뿐 아니라 잉크의 흡수성이 양호하여 인쇄적성을 보다 향상시킬 수 있는 중성지의 제조방법을 새로히 개발한 것으로 본 발명을 상세히 설명하면 다음과 같다.The present invention, in order to correct the problem of acidic paper in the manufacture of neutral paper using chemical pulp or wood wood pulp, the additives of the paper completely excluded the acidic material and only in the neutral state of the paper, the most discoloration, deterioration In addition, the tear strength of the paper is high, and the whiteness and opacity of the paper are not only good, but also the absorbency of the ink has been newly developed a manufacturing method of a neutral paper that can further improve the printability. .

즉, 화학펄프나 쇄목펄프를 사용하여 종이를 제조함에 있어서, 펄프에 소정량의 중탄산 소다 또는 탄산 소다를 투입하여 충분히 고해하고 고해된 펄프는 섬유의 수화가 매우 커서 섬유의 길이를 길게 유지하면서 다지화되어서 초지시에 이들 섬유의 견고한 결합으로 인하여 종이의 인열강도와 파열강도가 증대하게 된다. 고해된 펄프에는 종이의 충전제로써 약알카리성인 탄산칼슘을 적량첨가 교반하며, 이는 종이의 불투명성과 백색도 및 잉크의 흡수성을 향상시키어서 인쇄적성을 높이게 된다. 충전제가 혼합된 펄프에는 다시 내수제로써 알키릴 호박산 무수물을 양이온 전분 유도체에 분산하여서 된 유액을 사용하거나, 또는 알킬케텐 다이머를 지료에 투입 교반한 다음 양이온 변성아크릴 아마이드와 폴리아크릴 아미드 포리아민을 투입하여 충분히 교반한 지료를 박엽지로 초지하여 공지의 요령으로 건조시키어서 본 발명의 중성 박엽지를 얻는다.That is, in the production of paper using chemical pulp or wood pulp, the pulp that is sufficiently beaten by adding a predetermined amount of sodium bicarbonate or soda carbonate to the pulp, and the beaten pulp is very hydrated and maintains the length of the fiber long. The hardening of these fibers during papermaking increases the tear and tear strength of the paper. The beaten pulp is appropriately stirred with a weakly alkaline calcium carbonate as a filler of paper, which improves the opacity and whiteness of the paper and the absorbency of the ink, thereby improving printability. In the pulp mixed with the filler, an emulsion made by dispersing alkyl succinic anhydride in a cationic starch derivative is used as a water-resistant agent, or an alkyl ketene dimer is added to the stock and stirred, followed by addition of cation-modified acrylamide and polyacrylamide polyamine. The paper was stirred with a thin paper and then dried with known techniques to obtain a neutral thin paper of the present invention.

본 발명에서 펄프의 고해시에 사용되는 중탄산소다는 펄프의 산도의 완충작용에 있어서 다른 알카리성 제제에 비하여 양호한 완충작용을 갖는다.Sodium bicarbonate, which is used in the high resolution of the pulp in the present invention, has a good buffering effect in comparison with other alkaline agents in buffering the acidity of the pulp.

또한 본 발명에서 충전제로 사용된 탄산칼슘은 기존의 충전제인 활석(Talc)이나 점로(Kaoline)에 비하여 알카리도, 백색도, 종이의 불투명도가 높으며 잉크의 흡수가 양호하여 인쇄 적성이 그만큼 향상되는 것이다.In addition, the calcium carbonate used as the filler in the present invention is higher in alkalinity, whiteness, paper opacity, and better absorption of ink than the conventional filler Talc or Kaoline, thereby improving printability.

특히 본 발명에서 내수제로 사용되는 알키릴 호박산 무수물은 석유화학의 생성물인 올레핀을 마레인 화하여 제조되는 것으로 이는 펄프의 섬유중 OH기와 반응을 하여 섬유의 소수성(疎水性)을 부여하게 되며 여기에 양이온 전분 유도체의 첨가에 의하여 전분 유도체의 첨가에 의하여 소수성이 보다 강하게 발전되어서 내수성을 높이게 되는 것이다.In particular, the alkyl succinic anhydride used as a water-resistant agent in the present invention is prepared by marinizing olefin, which is a product of petrochemical, which reacts with OH groups in the pulp fibers to impart hydrophobicity to the fibers. By the addition of the cationic starch derivative, the hydrophobicity is more strongly developed by the addition of the starch derivative to increase the water resistance.

또한 다른 내수재인 알킬케텐 다이머도 섬유의 OH기와 반응을 하여 소수성을 부여하며 이에 양이온 변성 아크릴 아마이드 및 폴리 아크릴 포리아민을 첨가하여 소수성 반응을 정착시켜서 종이의 내수성을 대단히 향상시키게 된다.In addition, alkylketene dimer, which is another water-resistant material, reacts with the OH group of the fiber to impart hydrophobicity, thereby adding a cation-modified acrylamide and polyacryl polyamine to fix the hydrophobic reaction, thereby greatly improving the water resistance of the paper.

이와 같이 본 발명은 펄프에 첨가되는 화학약품에 있어서 산성물질을 전적으로 배제하고 중성으로 종이를 제조할 수 있게 되므로 상기한 종이의 변질, 변색이 없고 인쇄적성이 양호하며 인열강도와 파열강도가 커서 각종 문헌자료로 인쇄하였을 때 영구적으로 보관유지가 가능하게 된다.As described above, the present invention is capable of producing paper with neutrality by completely removing acidic substances from chemicals added to pulp, so that there is no alteration or discoloration of the paper, and the printability is good, and the tear strength and burst strength are large. When printed as literature, it can be kept permanently.

[실시예]EXAMPLE

통상의 펄프를 사용하여 종이를 제조함에 있어서, 펄프 100부(중량비)에 대하여 0.5-1부의 중탄산소다를 투입하여 고해기로 고해시키고 고해된 지료에 탄산칼슘 20부를 균일하게 배합하며 이어서 종이의 내수제로써(1). 알키릴 호박산 무수물을 양이온 전분 유도체에 분산 유화시킨 유화액 0.3부를 사용하거나(2). 알킬케텐다이머 0.2부를 지료 박스에 투입하고 양이온 변성 아크릴 아마이드 0.2부, 폴리 아크릴 아마드포리아민 0.3부를 지료의 배합 말기에 첨가하여 균질로 교반하면서 초진한 다음 통상의 방법으로 건조시키어서 본 발명의 중성박엽지를 얻는다.In preparing paper using ordinary pulp, 0.5-1 part of sodium bicarbonate is added to 100 parts of pulp (weight ratio), beating with a beating machine, and uniformly blending 20 parts of calcium carbonate to the beaten material, followed by a water-resistant agent of paper (1). 0.3 parts of an emulsion obtained by dispersing and emulsifying alkyl succinic anhydride in a cationic starch derivative (2). 0.2 parts of an alkyl ketene dimer was added to a paper box, 0.2 parts of a cation-modified acrylamide and 0.3 parts of a polyacrylic amide polyamine were added at the end of the mixing of the material, followed by homogeneous stirring, followed by drying in a conventional manner to give a neutral thin leaf of the present invention. Get will

Claims (2)

화학펄프나 쇄목펄프를 사용하여 중성 박엽지를 제조함에 있어서, 펄프에 중탄산소다를 첨가하여 고해하고 충전제로써 탄산칼슘을 지료에 투입 교반한 다음 이에 아키릴 호박산 무수물과 양이온 전분 유도체를 투입하여 제조함을 특징으로 한 중성박엽지의 제조방법.In the production of neutral thin paper using chemical pulp or ground wood pulp, it is prepared by adding sodium bicarbonate to the pulp, adding calcium carbonate to the paper as a filler, stirring, and then adding acryryl succinic anhydride and a cationic starch derivative. Method for producing a neutral foil characterized in that. 상기 청구범위 1항에 있어서 종이의 내수제로 알킬케텐 다이머와 양이온 변성 아크릴 아마이드 및 폴리 아크릴 아미드 포리아민수지를 첨가함을 특징으로 하는 것.The method according to claim 1, wherein an alkyl ketene dimer, a cation-modified acrylamide, and a polyacrylamide polyamine resin are added as a water-resistant agent of paper.
KR1019850005354A 1985-07-26 1985-07-26 The method for preparing neutral paper KR870001578B1 (en)

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KR1019850005354A KR870001578B1 (en) 1985-07-26 1985-07-26 The method for preparing neutral paper

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