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KR20120048175A - Manufacturing method for paper of using wood particles - Google Patents

Manufacturing method for paper of using wood particles Download PDF

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Publication number
KR20120048175A
KR20120048175A KR1020100109662A KR20100109662A KR20120048175A KR 20120048175 A KR20120048175 A KR 20120048175A KR 1020100109662 A KR1020100109662 A KR 1020100109662A KR 20100109662 A KR20100109662 A KR 20100109662A KR 20120048175 A KR20120048175 A KR 20120048175A
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South Korea
Prior art keywords
paper
wood
bleached
wood powder
pulp
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KR1020100109662A
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Korean (ko)
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KR101207845B1 (en
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황국현
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(주)지바이오텍
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Priority to KR1020100109662A priority Critical patent/KR101207845B1/en
Priority to US13/883,598 priority patent/US20130292071A1/en
Priority to JP2013537619A priority patent/JP5938837B2/en
Priority to PCT/KR2011/008430 priority patent/WO2012060672A2/en
Priority to CN2011800535063A priority patent/CN103348061A/en
Publication of KR20120048175A publication Critical patent/KR20120048175A/en
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Publication of KR101207845B1 publication Critical patent/KR101207845B1/en

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
    • D21B1/063—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods using grinding devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/20—Chemically or biochemically modified fibres

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Paper (AREA)

Abstract

PURPOSE: A paper using bleached wood and a method for fabricating the same are provided to improve dehydration property and to save energy. CONSTITUTION: A method for fabricating paper using bleached wood comprises: a step of pulverizing wood materials to prepare wood pulp and drying; a step of selecting wood which has 1.15 mm of fiber length and classifying; a step of mixing wood and water for 5 minutes and adding hydroperoxide(H_2O_2) solution and salt water; a step of bleaching the wood for 40 minutes; a step of drying the paper by steam; a step of classifying and selecting; a step of mixing 5-20 wt% of bleached wood and 80-95 wt% of natural pulp(10).

Description

표백 목분을 이용한 종이 및 그 제조방법{Manufacturing method for paper of using wood particles}Manufacturing method for paper of using wood particles}

본 발명은 표백된 목분을 천연펄프에 혼합하여 종이를 제조하도록 함으로써 탈수성을 향상시키는 한편 펄프의 사용량을 줄여 저렴하고 고품질의 종이를 제공하도록 하는 표백 목분을 이용한 종이 및 그 제조방법에 관한 것이다.The present invention relates to a paper using bleached wood powder and a method for producing the same by mixing bleached wood powder with natural pulp to produce paper by improving dehydration while reducing the amount of pulp used to provide a cheap and high quality paper.

일반적으로 종이는 천연 펄프로 제조하거나 재생펄프를 혼합하여 제조하게 되는 것으로, 천연펄프는 목재, 마, 닥나무, 볏짚, 사탕수수, 파피루스 등 다양한 재료가 이용된다.In general, the paper is produced by natural pulp or by mixing recycled pulp, the natural pulp is a variety of materials such as wood, hemp, paper mulberry, rice straw, sugar cane, papyrus.

일반적으로 제지는 원료 사용의 효율화와 초지공정의 탈수성 때문에 여러 층의 종이합지 형태로 제조되며, 제지에 사용되는 원료는 크게 천연펄프와 재생펄프로 구별되게 된다.Generally, paper is manufactured in the form of several layers of paper lamination due to the efficiency of raw material use and the dehydration of papermaking process.

상기 재생펄프는 천연펄프에 비해 미세분과 회분함량이 높아 탈수성을 저하시킬 뿐만 아니라 종이의 벌크와 강도를 감소하게 하게 되며, 특히 벌크의 하락은 제지 제조공정에서 펄프의 사용량을 증가시켜 생산원가에 악영향을 줄 뿐만 아니라 재성펄프의 경우 재사용 횟수가 증가하면서 물을 함유하는 능력이 높아져 건조에너지가 상승하게 된다.The recycled pulp has a higher content of fines and ash than natural pulp, which not only reduces dehydration, but also reduces the bulk and strength of paper. In particular, the decrease in bulk increases the amount of pulp used in the paper manufacturing process, thereby increasing the production cost. In addition to adversely affecting, the recycled pulp increases the number of reuses, thereby increasing the ability to contain water, thereby increasing drying energy.

따라서 제지의 벌크를 상승시키면 재생펄프의 사용량이 절감될 뿐만 아니라 건조에너지 절감에도 도움이 되므로, 종래에는 특허등록10-0898383호에 종이제지의 벌크를 향상시키는 목분을 이용하여 종이를 재생펄프에 혼합하여 종이를 제조하도록 함으로써 제지의 벌크를 향상시켜 펄프의 사용량을 줄이고 있다.Therefore, increasing the bulk of paper not only reduces the amount of recycled pulp, but also helps to reduce dry energy. Therefore, in the prior art, Patent Registration No. 10-0898383 uses wood flour to improve the bulk of paper. By making paper, the bulk of the paper is improved to reduce the amount of pulp used.

그러나, 상기 선 특허에 사용되는 목분은 목재료를 준비하여 그라인더로 분쇄한 목분을 분급하여 선택된 것을 사용하게 되는 것으로, 특히 선 특허에 사용되는 목분은 천연펄프에 혼합하여 사용하지 않고 재생펄프(고지)에 혼합하여 종이제조에 사용하는 것으로, 백색 종이에 폭넓게 사용되지 못함은 물론 재생펄프에 비하여 고가인 천연펄프의 사용량을 줄이지 못하여 종이 제조비용을 증가시키게 된다.However, the wood flour used in the above-mentioned patent is to use wood selected by classifying the wood powder pulverized with a grinder, in particular, the wood flour used in the prior patent is mixed with natural pulp without using recycled pulp (paper) It is used in paper production by mixing with), and it is not widely used in white paper, and it does not reduce the amount of expensive natural pulp compared to recycled pulp, thereby increasing the paper manufacturing cost.

국내 특허등록 10-0898383호(2009. 05. 12 등록). 한솔제지주식회사Domestic patent registration 10-0898383 (registered May 12, 2009). Hansol Paper Co., Ltd.

본 발명은 종이의 제조시 벌크를 향상시키기 위하여 목분을 사용할 때 재생펄프에 목분을 사용함으로써 천연펄프의 사용량을 감소시키지 못하고, 표백이 되지 않은 목분을 사용하는 관계로 백색종이 제조에는 활용이 어려운 문제를 해결하도록 하는 것이다.The present invention does not reduce the use of natural pulp by using wood flour in recycled pulp when wood flour is used to improve the bulk of paper, and it is difficult to utilize in producing white paper due to the use of unbleached wood flour. To solve the problem.

본 발명은 목재료를 분쇄하고 건조한 후 일정크기 이하로 분급하여 정선하는 과정을 거치고, 정선된 목분을 표백제와 함께 투입하여 일정시간 교반시킴으로써 표백이 이루어지게 하고, 표백된 목분은 연마가공과 분급 및 정선과정을 거쳐 표백 목분을 얻도록 하고, 상기 표백목분 5-20중량%는 천연펄프 80-95중량%에 혼합한 후 종이제조 과정을 거쳐 종이를 제조하도록 하는 것으로, 이미 표백이 완료된 표백 목분의 사용으로 백색종이 폭넓게 사용되는 한편 벌크의 향상으로 천연펄프의 사용량을 감소시키는 것이다.In the present invention, the wood material is pulverized, dried and classified to a predetermined size or less, and then selected, and the selected wood flour is added with a bleach to stir for a certain time, and the bleached wood flour is subjected to grinding and classification and Through the selection process to obtain bleached wood flour, 5 to 20% by weight of the bleached wood powder is mixed with 80-95% by weight of natural pulp to produce paper through the paper manufacturing process, the bleached wood powder already bleached The use of white species is widely used, while the bulk improvement reduces the use of natural pulp.

본 발명은 재생펄프와 천연펄프를 혼합하여 종이를 제조함에 있어서, 목분을 준비하여 표백을 한 후 천연펄프에 표백 목분을 혼합하여 종이를 제조하도록 함으로써 탈수성을 향상시켜 에너지를 절약하는 한편 표백목분을 천연펄프에 혼합하여 사용함으로써 천연펄프의 사용량을 줄이는 한편 백색종이의 제조에 폭넓게 사용되는 효과가 있다.In the present invention, in the manufacture of paper by mixing recycled pulp and natural pulp, wood powder is prepared and bleached, and then bleached wood powder is mixed with natural pulp to produce paper, thereby improving dehydration and saving energy while bleaching wood flour. By mixing with natural pulp to reduce the amount of natural pulp used, there is an effect that is widely used in the production of white paper.

도 1은 본 발명의 종이 제조 흐름도1 is a paper manufacturing flow chart of the present invention

본 발명은 종이의 제조에 있어서, 목분을 재생펄프에 혼합하여 사용하는 방식을 탈피하여 목분을 표백시킨 후 천연펄프에 혼합하여 종이를 제조하도록 함으로써 천연펄프의 사용을 줄이는 한편 벌크의 향상으로 탈수성을 증가시켜 에너지를 절약하는 것이다.The present invention, in the production of paper, by avoiding the method of mixing and using wood powder in recycled pulp to bleach the wood powder and then mixed with natural pulp to produce paper by reducing the use of natural pulp while improving the bulk dehydration To save energy.

이러한 본 발명은 목분을 표백시키는 과정과, 표백된 목분을 이용하여 종이를 제조하는 과정에 대하여 설명한다.The present invention describes a process of bleaching wood powder and a process of manufacturing paper using bleached wood powder.

먼저 목분을 표백시키는 과정에 대하여 살펴본다.First, the process of bleaching wood powder.

목재료를 분쇄기로 분쇄하여 우드 펄프(wood pulp)화 한 후 우드펄프를 수분함량 1-2중량%를 유지하도록 건조한다.Wood pulp is pulverized with a wood grinder and wood pulp is dried to maintain 1-2% by weight of water.

건조된 우드펄프는 섬유장이 1.15mm 이하의 목분으로 정선하는 한편 분급이 이루어지도록 한다.Dried woodpulp allows the fiber length to be sorted with wood flour up to 1.15 mm or less.

분급 및 정선이 이루어진 목분은 표백설비에 투입한 후 일정량의 물을 투입한 후 5분이 경과하면 H2O2(과산화수소)수용액과 소금물을 혼합하여 첨가하고, 표백설비를 작동시켜 40분 정도 교반하며 표백이 이루어지도록 한다.After classifying and selecting wood powder, put it into the bleaching equipment, add a certain amount of water, and after 5 minutes, mix and add H 2 O 2 (hydrogen peroxide) solution and brine, operate the bleaching equipment and stir for about 40 minutes. Allow bleaching.

표백설비에서 표백이 이루어지면 스팀을 이용하여 표백목분을 건조시키되 목분 1톤 당 1시간 정도의 건조과정을 거치도록 한다.When bleaching is performed in the bleaching facility, the bleached wood powder is dried using steam, but the drying process is performed for about 1 hour per ton of wood powder.

건조과정에서 건조된 표백목분을 연마 가공한 후 분급 및 정선 과정을 거쳐 종이의 제조에 사용되는 표백목분을 제조하게 된다.Bleached wood flour used in the manufacture of paper is prepared by grinding and bleaching the dried bleached wood powder during the drying process.

한편 상기 된 과정을 거쳐 표백목분이 제조되면 표백목분 분산, 투입(10)과정을 통하여 표백목분 5-20중량%와 천연펄프 80-95중량%를 혼합하여 초지기에 투입하여 통상의 방법으로 종이를 제조하도록 한다.On the other hand, when the bleached wood powder is produced through the above process, the bleached wood powder is mixed with 5-20% by weight of bleached wood powder and 80-95% by weight of natural pulp through the process of dispersing and adding (10), and then put the paper into a paper machine by a conventional method. To manufacture.

즉, 본 발명은 천연펄프 만으로 종이를 제조하지 않고 천연펄프에 일정량의 표백목분을 혼합하여 사용함으로써, 표백목분의 벌크 향상으로 천연펄프의 사용량을 감소시키게 되고, 탈수성을 향상시켜 종이 제조에 따른 에너지를 줄이도록 하는 것이다.That is, the present invention does not manufacture paper using only natural pulp, but by mixing a certain amount of bleached wood powder with natural pulp, thereby reducing the amount of natural pulp by improving the bulk of bleached wood powder, and improving the dehydration properties according to paper production. It is to reduce energy.

그리고 본 발명은 목분을 그대로 사용하는 기존 방식과 달리 목분을 표백한 후 사용하게 되므로, 상기 된 이점 이외에 백색종이의 제조에 폭넓게 사용될 수 있는 것이다.And because the present invention is used after bleaching the wood powder, unlike the existing method using the wood powder as it is, it can be widely used in the production of white paper in addition to the above advantages.

이러한 본 발명에서 표백목분을 제조하는 과정에 대하여 상세히 살펴본 후 상기 표백목분을 이용하여 종이를 제조하는 방법에 대하여 살펴보기로 한다.In the present invention, a process of manufacturing bleached wood powder will be described in detail, and then a method of manufacturing paper using the bleached wood powder will be described.

본 발명은 종이를 제조할 때 사용하기 위한 목재료를 준비한 후 준비된 목재료를 분쇄기로 투입하여 우드펄프로 분쇄하도록 하고, 분쇄기에서 분쇄된 우드펄프는 건조과정을 거쳐 수분함량 1-2중량%를 유지하도록 건조를 시킨다.In the present invention, after preparing a wood material for use in the manufacture of paper, the prepared wood material is put into a grinder to be pulverized into wood pulp, the wood pulp pulverized in the grinder is a water content 1-2% by weight through the drying process Dry to maintain.

즉, 목재료를 분쇄하여 우드펄프로 만든 후 이를 건조하여 우드펄프의 수분함량이 1-2중량%가 되도록 충분한 건조가 이루어지도록 한다.In other words, the wood material is pulverized into wood pulp and dried to allow sufficient drying to allow the water content of the wood pulp to be 1-2% by weight.

상기 분쇄 및 건조 과정을 거친 우드펄프는 섬유장이 1.15mm 이하가 되도록 분급하는 한편 정선이 이루어지도록 하고, 위와 같은 조건의 섬유장을 맞추어주기 위하여 분쇄기를 사용하되 분급 과정에서 조건을 넘는 목분은 다시 분쇄기로 이동시켜 분쇄과정을 거치도록 함으로써 종이를 만들 때 사용할 수 있는 섬유장을 갖도록 한다.The wood pulp, which has been pulverized and dried, is classified to have a fiber length of 1.15 mm or less and is made to be selected. They have to go through the grinding process to have fiber sheets that can be used to make paper.

위와 같이 분급 및 정선과정을 거쳐 섬유장 1.15mm 이하가 되는 목분은 통상의 표백설비에 일정량의 물과 함께 투입한 후 5분이 경과할 때까지 기다려 수분이 목분에 충분히 함유될 수 있도록 하며, 목분에 수분을 함유시키는 이유는 표백이 원활히 이루어지도록 하기 위함이다.After the classification and selection process as described above, wood flour with a fiber length of 1.15 mm or less is added to a regular bleaching facility with a certain amount of water, and then waited for 5 minutes to allow sufficient moisture to be contained in the wood flour. The reason for containing moisture is to make the bleaching process smooth.

표백설비에 목분과 함께 물을 투입한 후 5분이 경과하여 수분이 목분에 침투하면 H2O2(과산화수소)수용액과 소금물을 표백설비에 혼합하여 첨가하도록 하고, 위와 같이 과산화수소와 소금물을 물에 불린 목분에 투입된 표백설비에 넣은 후 표백설비를 40분 정도 작동시켜 교반이 이루어지게 함으로써 목분의 표백이 이루어지도록 한다.After 5 minutes of adding water with wood powder to the bleaching equipment, if water penetrates into the wood powder, add H 2 O 2 (hydrogen peroxide) solution and brine to the bleaching equipment, add hydrogen peroxide and salt water After putting in the bleaching equipment put into the wood powder, the bleaching equipment is operated for about 40 minutes so that the agitation is made to bleach the wood powder.

위와 같이 표백설비를 거치면서 목분을 표백시킨 후에는 스팀을 표백설비에서 스팀설비로 이동시켜 스팀으로 표백목분을 건조시키도록 하되 목분 1톤 당 1시간 정도의 건조과정을 거치도록 한다.After bleaching the wood powder through the bleaching equipment as described above, the steam is moved from the bleaching equipment to the steam equipment to dry the bleached wood powder with steam, but the drying process takes about 1 hour per ton of wood powder.

상기 된 건조과정을 거치면서 스팀으로 건조가 이루어진 표백목분은 다시 연마 가공 과정을 거친 후 전술 된 분급 및 정선 과정을 거쳐 종이의 제조에 사용되는 표백목분을 제조하게 된다.The bleached wood powder dried by steam while the above-mentioned drying process is subjected to the polishing process and then to produce the bleached wood powder used for the manufacture of paper through the above-described classification and selection process.

위와 같은 방식으로 표백목분이 제조되면 이를 이용하여 종이를 제조하게 된다.When bleached wood flour is produced in the same manner as above, it is used to manufacture paper.

종이제조를 위해서는 전술된 방식으로 준비된 표백목분 5-20중량%와 천연펄프 80-95중량%를 혼합한 후 초지기에 투입함으로써 종이를 제조하도록 하고, 초지기에 투입된 표백목분과 천연펄프를 혼합한 재료를 이용하여 종이를 제조하는 과정은 일반적인 방식에 따르는 것이므로, 본 발명에서는 상세 기술을 생략한다.For paper production, 5-20% by weight of bleached wood flour prepared in the above-described manner and 80-95% by weight of natural pulp are mixed and then put into a paper machine to produce paper, and a material of bleached wood powder and natural pulp that is added to a paper machine Since the process of manufacturing paper using the conventional method, detailed description is omitted in the present invention.

즉, 본 발명은 천연펄프를 이용하여 통상의 방법으로 종이를 제조함에 있어서, 천연펄프와 함께 표백목분을 혼합하여 종이를 제조하도록 함으로써, 표백목분의 투입량만큼 백색종이의 제조에 소요되는 천연펄프의 사용량을 줄이게 된다.That is, the present invention is to prepare a paper by a conventional method using natural pulp, by mixing bleached wood powder with natural pulp to produce a paper, the amount of natural pulp required for the production of white paper by the amount of bleached wood powder This reduces usage.

이와 같이 본 발명은 천연펄프에 일정량의 표백목분을 혼합하여 사용함으로써, 표백목분의 벌크 향상으로 천연펄프의 사용량을 감소시키게 되고, 탈수성을 향상시켜 종이 제조에 따른 에너지를 줄이는 것이다.As described above, the present invention mixes a certain amount of bleached wood flour with natural pulp, thereby reducing the amount of natural pulp used by improving the bulk of bleached wood flour, improving dehydration and reducing energy due to paper production.

10 : 표백목분 분산,투입10: Bleached wood powder dispersion, input

Claims (2)

목재료를 분쇄기로 분쇄하여 우드펄프로 만든 후 수분함량 1-2중량%로 건조시키는 과정을 수행하고,
건조과정에서 건조된 우드펄프를 섬유장이 1.15mm 이하의 목분으로 정선하고 분급하는 과정을 수행하며,
분급 및 정선이 이루어진 목분은 표백설비에 투입하여 일정량의 물을 투입한 후 5분이 경과하면 H2O2(과산화수소)수용액과 소금물을 혼합하여 첨가하고, 표백설비를 작동시켜 40분 정도 교반하며 표백하는 과정을 수행하고,
표백설비에서 표백이 이루어지면 스팀을 이용하여 표백목분을 건조시키는 과정을 수행한 후 분급 및 정선과정을 거쳐 표백목분을 제조하는 과정을 수행하며,
상기 표백목분 5-20중량%와 천연펄프 80-95중량%를 혼합하여 초지기에 투입하여 통상의 방법으로 종이를 제조하는 과정을 수행하는 것을 특징으로 하는 표백 목분을 이용한 종이 제조방법.The wood material is pulverized with a pulverizer to make wood pulp and dried to a moisture content of 1-2% by weight.
The wood pulp dried in the drying process is selected and classified into wood flour having a fiber length of 1.15 mm or less.
After classifying and selecting wood powder, put it into the bleaching equipment, add a certain amount of water, and after 5 minutes, mix and add H 2 O 2 (hydrogen peroxide) solution and brine, and operate the bleaching equipment and stir for about 40 minutes. The process of doing
When bleaching is performed in the bleaching equipment, the process of drying the bleached wood powder using steam is performed, followed by the process of manufacturing the bleached wood powder through the classification and selection process.
5-20% by weight of the bleached wood powder and 80-95% by weight of natural pulp, the paper manufacturing method using a bleached wood powder, characterized in that the paper manufacturing process by performing a process by adding a paper to a paper machine. 제1항에 기재된 방법에 의하여 제조되는 표백 목분을 이용한 종이. Paper using bleached wood flour produced by the method according to claim 1.
KR1020100109662A 2010-11-05 2010-11-05 Wood Particles, Manufacturing Method for paper of using the Same KR101207845B1 (en)

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PCT/KR2011/008430 WO2012060672A2 (en) 2010-11-05 2011-11-07 Bleached wood powder, a production method for bleached wood powder, paper which uses the same and a production method for the same
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