KR20050031129A - Filter paper process using in a metalware - Google Patents

Filter paper process using in a metalware Download PDF

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Publication number
KR20050031129A
KR20050031129A KR1020030067266A KR20030067266A KR20050031129A KR 20050031129 A KR20050031129 A KR 20050031129A KR 1020030067266 A KR1020030067266 A KR 1020030067266A KR 20030067266 A KR20030067266 A KR 20030067266A KR 20050031129 A KR20050031129 A KR 20050031129A
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South Korea
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filter paper
paper
precious metal
pulp
weight
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KR1020030067266A
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Korean (ko)
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KR100502173B1 (en
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최창윤
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천양제지 주식회사
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F13/00—Making discontinuous sheets of paper, pulpboard or cardboard, or of wet web, for fibreboard production
    • D21F13/02—Making hand-made paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/14—Making cellulose wadding, filter or blotting paper
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/02—Material of vegetable origin
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/08—Filter paper

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  • Filtering Materials (AREA)

Abstract

A method for manufacturing filter paper of precious metal is provided to minimize an outflow of precious metal by forming air pores uniformly. A filter paper for precious metal is obtained by the steps of: mixing 1-10wt.% of epoxy resin with 59-89wt.% of paper mulberry and 10-31wt.% of pulp to compound raw material; forming paper out of the mixture solution, and giving motions to a net frame of a paper forming device in vertical and horizontal directions; and then compressing, drying, sorting and cutting the filter paper.

Description

귀금속 여과지의 제조방법{ FILTER PAPER PROCESS USING IN A METALWARE}Manufacturing method of precious metal filter paper {FILTER PAPER PROCESS USING IN A METALWARE}

본 발명은 금은 등의 귀금속을 세공할 때 사용하는 절삭수로 부터 귀금속 가루를 여과하여 회수할 때 사용하는 귀금속 여과지에 관한 것이다.The present invention relates to a noble metal filter paper for use in filtering and recovering noble metal powder from cutting water used for processing precious metals such as gold and silver.

귀금속의 세공이나 도금시 사용되는 용수에는 귀금속 가루가 포함되어 있기 때문에 이들 용수로 부터 귀금속을 회수하기 위해 여과지를 사용하게 된다.Since the water used for the pore or plating of the precious metal contains precious metal powder, filter paper is used to recover the precious metal from the water.

이들 귀금속 여과는 회수율을 높이기 위해 필터 대신 전용 여과지를 사용하며, 전용 여과지는 강도가 높고 구멍의 크기가 균일할 수록 양호한 여과 성능을 얻을 수 있다.These precious metal filtration uses a dedicated filter paper instead of a filter to increase the recovery rate, the higher the strength and the uniform size of the hole can obtain a good filtration performance.

일반적인 여과지는 닥과 펄프를 대략 9 : 1 의 비율로 혼합한 원료를 사용하여 일반 한지제조공정으로 제조하고 있는바, 제조된 여과지는 일반 종이 보다는투기도 및 강도에 있어서 우수한 특성을 갖는다.The general filter paper is manufactured by the general papermaking process using raw materials mixed with Doc and pulp at a ratio of about 9: 1, and thus the produced filter paper has superior characteristics in air permeability and strength than general paper.

그러나 종래의 여과지는 높은 수준의 투기도를 얻기 위하여 닥의 함량을 높게 하고, 지질을 구성하는 섬유가 한방향으로 만 형성되기 때문에 구멍의 크기가 균일하지 않고, 젖은 상태에서 강도가 약하여 한장의 여과지를 사용할 경우 그대로 통과하여 빠져나가는 비율이 높고 여과도중 또는 여과물을 수거하는 과정에서 여과지가 찢어지는 등의 문제가 발생하기 때문에 대부분의 세공업자는 여과지 2장을 겹쳐 사용하는 방법을 사용하고 있다.However, in order to obtain a high level of air permeability, the conventional filter paper has a high content of Doc, and since the fibers constituting the lipid are formed only in one direction, the size of the holes is not uniform and the strength of the sheet is weak due to weak strength in the wet state. Most of the craftsmen are using two sheets of filter paper because they have a high rate of passing out as it is, and tearing the filter paper during filtration or collecting the filtrate.

그에 따라 여과지 한장을 사용할 때에 비하여 회수율이 높아지고, 작업도중 여과지의 찢어짐을 방지할 수 있으나 투기도가 현저히 낮아짐으로서 여과에 소요되는 시간이 길어지고, 여과지를 이중으로 사용함으로서 비용을 증대시키는 요인이 되고 있다.As a result, the recovery rate is higher than when using one sheet of filter paper, and the tearing of the filter paper can be prevented during the operation. However, the air permeability is significantly lowered, which increases the time required for filtration and increases the cost by using the filter paper twice. have.

본 발명은 이상과 같은 종래의 귀금속 여과지가 갖는 제 문제점을 해소하기 위한 것이며, 귀금속 가루의 유출을 최소화할 수 있도록 구멍의 크기를 균일하게 하고, 사용시 파열되거나 찢어지는 것을 방지할 수 있는 강도가 높은 전용 귀금속 여과지를 새로이 제시하여 여과 효율을 높이고, 여과지의 사용량을 줄여 비용을 절감시킬 수 있도록 할 목적으로 안출된 것이다. The present invention is to solve the problems of the conventional noble metal filter paper as described above, to uniform the size of the hole so as to minimize the outflow of precious metal powder, high strength to prevent rupture or tearing in use It is designed to improve the filtration efficiency and reduce the cost by reducing the amount of used filter paper by newly presenting the exclusive precious metal filter paper.

이를 위하여 본 발명은 닥과 펄프에 에폭시수지를 혼합하여 원료를 배합하되 닥 59-89 %중량, 펄프 10-31 %중량 에폭시수지 1-10 %중량의 범위로 혼합하며, 혼합액을 사용하여 초지를 형성하고, 압착, 건조, 선별, 재단 공정에 의해 제조하되 초지성형시 초지기를 구성하는 발틀을 세로방향 및 가로방향으로 2 - 4회 부여하여 초지를 형성하는 방법으로 제조하는 것을 특징으로 한다.To this end, the present invention is to mix the raw material by mixing the epoxy resin in the Doc and pulp, but mixed in the range of 59-89% by weight, 10-31% by weight epoxy resin 1-10% by weight, using a mixed solution Forming and manufacturing by pressing, drying, sorting, cutting process, but characterized in that it is produced by the method of forming a papermaking paper by applying the foot constituting the papermaking machine in the vertical and horizontal directions 2-4 times in papermaking.

본 발명은 투기도가 높고 질긴 성질을 갖는 한지와 일반 제지용 펄프를 혼합하고, 구멍을 균일하게 하고 강도를 증가시키기 위하여 기계방향의 운동 뿐만 아니라 이에 직각 방향의 운동에 의해 초지를 성형하고, 원료에 에폭시 수지를 가한 구성을 특징으로 한다.The present invention is to mix the paper and pulp of paper and pulp with high air permeability, and to form the paper by the movement of the machine direction as well as the movement of the machine direction in order to uniformize the hole and increase the strength, It is characterized by the configuration in which an epoxy resin is added thereto.

닥은 일반적인 한지의 원료로서 수확한 닥나무를 저증, 흑피, 백피, 자비,세척,표백, 고해단계를 거쳐 얻으며, 섬유질이 질기고 섬유질이 서로 엉긴 형태의 지질구조를 갖기 때문에 일반 제지에 비해 투기도가 높고 강도가 높은 특성을 발휘하여 귀금속 가루의 여과에 매우 유용한 구조이다.Dak is a raw material of traditional Korean paper, which is harvested from low-disease, black skin, white skin, mercy, washing, bleaching, and beating stages.The fiber is tough and fibrous. It has high strength and high strength, which is very useful for filtration of precious metal powder.

펄프는 일반 제지용 원료로서 펄프화 공정을 통하여 얻어지며, 닥과 혼합됨으로서 투기도를 조절하고 균일화 하는 작용을 한다.Pulp is a raw material for general papermaking, obtained through the pulping process, and mixed with Doc to control and homogenize the air permeability.

에폭시 수지는 여과지의 강도 향상을 위한 것이며, 특히 물에 젖었을 때 여과지가 풀어지거나 찢어지는 것을 방지하는 효과를 갖는다.The epoxy resin is for improving the strength of the filter paper, and particularly has an effect of preventing the filter paper from loosening or tearing when wet.

닥, 펄프 및 에폭시수지의 혼합비율은 닥 59-89 %중량, 펄프 10-31 %중량 에폭시수지 1-10 %중량의 범위이며, 닥의 비율이 낮아지면 투기도가 낮아지고, 닥의 비율이 높아지면 투기도가 증가되는 반면 구멍의 균일성이 저하되는 특징이 있다.The mixing ratio of Doc, Pulp and Epoxy resin is in the range of 59-89% by weight of Doc and 10-31% by weight of Pulp 1-10% by weight of Epoxy Resin. Increasing air permeability increases the uniformity of the hole.

따라서, 도금분야와 같이 미세 금속물질의 회수에는 펌프의 함량이 높게 하고, 세공분야와 같이 다소 입자가 큰 금속물질의 회수에는 닥의 함량을 높게 하는 방법을 사용한다.Therefore, a high pump content is used for the recovery of the fine metal material as in the plating field, and a high Doc content is used for the recovery of the metal material, which is somewhat large in the pore area.

에폭시 수지는 닥과 펄프를 묶어주는 바인더로서 특히 여과작업시 물에 젖었을 때의 강도를 유지시켜주는 작용을 하며, 1%중량 이하로 첨가하면 성과가 미약하고, 10% 중량 이상 배합하면 투기도가 현저히 감소됨으로 5%중량이 가장 바람직한 배합비가 된다.Epoxy resin is a binder that binds doc and pulp and maintains strength when wet with water, especially in filtration work.When it is added below 1% by weight, the result is poor. Is significantly reduced so that 5% weight is the most preferable compounding ratio.

일반적인 한지 제조시 초지성형은 기계방향(MD), 즉, 초지액을 발틀로 받아 이를 전후방향(초지액이 공급되는 방향)으로 2-4회 흔들어 줌으로서 발에 초지를 뜨게 되는데 운동방향이 한쪽으로 치우쳐지기 때문에 전후방향에서의 강도는 높으나 그와 직각을 이루는 좌우방향에서의 강도는 매우 낮은 특성이 있다.In general manufacturing of Korean paper, papermaking is made of paper in the machine direction (MD), that is, papermaking liquid is received as a foot and shakes it two to four times in the front and rear direction (the direction in which the papermaking liquid is supplied). Due to the bias, the strength in the front-rear direction is high, but the strength in the left-right direction perpendicular to it is very low.

본 발명은 기계방향 뿐만 아니라 좌우 방향으로도 2-4 회 발틀을 흔들어줌으로서 지질을 구성하는 섬유가 가로,세로로 엮어지는 결과를 얻을 수 있으며, 그에 따라 세로방향(기계방향) 뿐만 아니라 가로방향(좌우방향, 기계방향과 직각방향)의 강도가 현저히 증가되고, 구멍의 균일성이 증대된다.The present invention can achieve the result of weaving the fibers constituting the lipid in the horizontal, vertical direction by shaking the bale 2-4 times not only in the machine direction but also in the left and right directions, and thus the longitudinal direction (machine direction) as well as the horizontal direction. (The left and right directions, the machine direction and the right angle direction) is significantly increased, and the uniformity of the holes is increased.

이하 가장 양호한 실시례를 들어 본 발명의 성과를 설명하면 다음과 같다. Best Mode for Carrying Out the Invention Hereinafter, the present invention will be described with reference to the following examples.

실시례 Example

닥을 79 %중량, 펄프 16 %중량, 에폭시수지 5 % 중량을 혼합하여 원료를 배합한다.Raw materials are mixed by mixing 79% by weight, 16% by weight pulp, and 5% by weight epoxy resin.

펄프는 침엽수를 원료로 한 BUCKEYE 사의 펄프(상품명 HPZ)를 사용하고, 에폭시 수지는 한국허쿨레스 사의 제품(상품명 카이민 557)를 사용하였다.The pulp was pulp manufactured by BUCKEYE (trade name HPZ) using conifers as a raw material, and the epoxy resin was manufactured by Hercules Korea (trade name Chimine 557).

배합된 원료를 혼합 한 후 가수하여 초지원액을 얻고, 이를 전후 및 좌우 유동이 가능한 발틀이 설치된 초지기를 사용하여 발틀에 공급된 초지를 전후 3회, 좌우 3회 요동시킨 후 여액을 버리는 방법으로 초지를 성형한다.After mixing the blended raw materials, the solution is watered to obtain the initial support solution, and the paper is supplied to the bale by using a paper machine equipped with a foot, which is capable of flowing back and forth and left and right. Molding.

성형된 초지를 일반적인 한지의 제조 공정인 압착, 건조, 선별, 재단 공정을 통하여 여과지를 완성한다.The molded paper is completed by pressing, drying, sorting, and cutting processes, which are general manufacturing processes of Korean paper.

이와 같은 방법에 의해 얻어진 여과지(a)와 닥 90%w , 펄프 10%w 를 혼합하여 초지성형시 기계방향으로 만 요동을 부여한 종래의 여과지(b)를 비교하면 다음과 같은 차이가 있다.When comparing the filter paper (a) obtained by such a method and the conventional filter paper (b) which mixed only 90% w of Doc and 10% w of pulp and gave only rocking in the machine direction during papermaking, there are the following differences.

본 발명에 의한 여과지(a)와 종래 여과지(b)의 비교표 Comparison table of filter paper (a) and conventional filter paper (b) according to the present invention

항목/ 구분 Item / Category a a b b 투기도(sec) Air permeability (sec) 9 9 5.7 5.7 기공도 Porosity Max Max 69.9 69.9 73.3 73.3 Mean Mean 48.3 48.3 53.6 53.6 파열강도(㎏/㎠) Bursting Strength (㎏ / ㎠) 1.40 1.40 0.85 0.85 인장강도(㎏f) Tensile strength (㎏f) MD MD 6.36 6.36 1.88 1.88 CD CD 6.36 6.36 3.88 3.88 신축률(mm) Stretch rate (mm) MD MD 3.58 3.58 4.31 4.31 CD CD 3.78 3.78 4.35 4.35

이상에서 보인 바와 같이 본 발명은 종래 여과지에 비하여 기공도가 낮음으로서 투기도가 다소 높으나 종래 여과지의 경우 2장을 겹쳐서 사용하는 점을 고려하였을 때 전체적인 여과능률에서는 차이가 없으며, 기공도의 편차가 상대적으로 작아 보다 균일한 구멍의 크기를 갖는 것임을 알 수 있다.As can be seen from the above, the present invention has a low porosity as compared to the conventional filter paper, but the air permeability is somewhat higher. However, the present invention has no difference in overall filtration efficiency, considering that two sheets are overlapped. It can be seen that it is relatively small and has a more uniform hole size.

파열강도와 인장강도 및 신축률의 경우 종래의 여과지에 비해 매우 높고, 가로 세로에 관계 없이 균일한 강도를 가짐을 알 수 있다.It can be seen that the bursting strength, the tensile strength, and the elongation rate are much higher than those of the conventional filter paper, and have uniform strength regardless of width and length.

이상의 구성에 의한 본 발명은 파열강도 및 인장강도가 높고, 물에 젖었을 때 강도가 그대로 유지되며, 기공이 균일하게 형성됨으로서 한장의 여과지에 의해서도 귀금속의 여과를 효과적으로 수행할 수 있다. According to the present invention, the burst strength and the tensile strength are high, the strength is maintained as it is wet with water, and the pores are uniformly formed, so that the filtration of the precious metal can be effectively performed even with one sheet of filter paper.

Claims (1)

닥과 펄프에 에폭시수지를 혼합하여 원료를 배합하되 닥 59-89 %중량, 펄프 10-31 %중량 에폭시수지 1-10 %중량의 범위로 혼합하며, 혼합액을 사용하여 초지를 형성하고, 압착, 건조, 선별, 재단 공정에 의해 제조하되 초지성형시 초지기를 구성하는 발틀을 세로방향 및 가로방향으로 2 - 4회 부여하여 초지를 형성하는 것을 특징으로 하는 귀금속 여과지의 제조방법.Mix raw materials by mixing epoxy resin with Doc and pulp, but mix them in the range of 59-89% by weight, 10-31% by weight Pulp and 1-10% by weight of epoxy resin, form paper by using liquid mixture, press, A method of manufacturing a precious metal filter paper, which is manufactured by drying, sorting, and cutting processes, but forms papermaking paper by applying two to four times in the longitudinal and transverse directions to form a paper making machine.
KR10-2003-0067266A 2003-09-29 2003-09-29 Filter paper process using in a metalware KR100502173B1 (en)

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KR100502173B1 KR100502173B1 (en) 2005-07-20

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Publication number Priority date Publication date Assignee Title
KR101217235B1 (en) * 2011-02-21 2013-01-09 연세대학교 원주산학협력단 Functinoal paper with antibiotic and sterilizing property comprising natural material, and its prepation method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101217235B1 (en) * 2011-02-21 2013-01-09 연세대학교 원주산학협력단 Functinoal paper with antibiotic and sterilizing property comprising natural material, and its prepation method

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