KR101088525B1 - Method for manufacturing paper using mulberry tree - Google Patents
Method for manufacturing paper using mulberry tree Download PDFInfo
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- KR101088525B1 KR101088525B1 KR1020100041693A KR20100041693A KR101088525B1 KR 101088525 B1 KR101088525 B1 KR 101088525B1 KR 1020100041693 A KR1020100041693 A KR 1020100041693A KR 20100041693 A KR20100041693 A KR 20100041693A KR 101088525 B1 KR101088525 B1 KR 101088525B1
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- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
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- 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
- D21C9/001—Modification of pulp properties
- D21C9/007—Modification of pulp properties by mechanical or physical means
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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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for fibres
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Abstract
본 발명은 종래에 폐기되던 뽕나무 가지를 이용하여 발묵성이 우수하고 표면이 균일하는 등 물성이 우수한 상백지를 제조할 수 있는 뽕나무를 이용한 상백지의 제조방법에 관한 것으로서, 뽕나무 가지로부터 벗겨내어 얻은 흑피를 농도가 8~10 g/L의 수산화나트륨 용액을 이용하여 12~14시간 동안 증자시키고, 20~24시간 동안 방치하여 증해하여 얻은 백피를 고해 및 초지공정을 거쳐 상백지를 제조하는 것을 특징으로 한다.The present invention relates to a method for producing white paper using mulberry, which is capable of producing white paper having excellent physical properties, such as excellent stainability and uniform surface using mulberry branches that have been disposed of in the past, and black skin obtained by peeling from mulberry branches. It is characterized by producing a white paper through the beating and papermaking process of the white skin obtained by cooking for 12 to 14 hours using a sodium hydroxide solution of 8 ~ 10 g / L concentration, and cooking for 20 to 24 hours .
Description
본 발명은 종래에 폐기되던 뽕나무 가지를 이용하여 발묵성이 우수하고 표면이 균일하는 등 물성이 우수한 상백지를 제조할 수 있는 뽕나무를 이용한 상백지의 제조방법에 관한 것이다.
The present invention relates to a method for producing white paper using mulberry, which can produce white paper having excellent physical properties such as excellent stainability and uniform surface using mulberry branches that have been disposed of in the past.
한지의 원료로 사용되고 있는 닥나무 흑피의 생산량은 매년 감소하여 대부분을 태국 등에서 수입하고 있다. 수입되는 인피섬유는 열대지방에서 자라난 관계로 수지장해를 일으킴에 따라 화선지 제조시 30% 이상을 첨가하지 못하는 실정이다.
The quantity of black mulberry, which is used as a raw material of Korean paper, decreases every year, and most of it is imported from Thailand. Imported bast fiber, because it grew in the tropics, causing resin failure, the situation can not add more than 30% in the manufacture of drawing paper.
한편 1970년대까지 우리나라 농·산촌의 주요 소득원 중 하나였던 양잠은 도시와헤 따른 농촌 인구의 감소와 화학섬유의 발달로 점차 줄어들어 1992년 전국의 뽕밭 면적과 잠견 생산량은 1985년도에 비하여 70% 이상 감소하였다. 그러나 누에고치의 가격은 천연섬유에 대한 선호에 힘입어 배 이상의 가격 상승을 가져왔고, 또한 최근에는 누에 및 오디 등의 뽕나무 관련 건강보조식품들이 크게 각광을 받고 있어 뽕나무의 재배면적이 증가하고 있는 추세이다.
Meanwhile, sheep sleep, which was one of the major sources of income in Korea's agricultural and mountain villages until the 1970s, gradually decreased due to the decrease in rural population and the development of chemical fiber. It was. However, the price of cocoon has more than doubled due to the preference for natural fiber, and recently, mulberry-related health supplements such as silkworm and mulberry have been in the spotlight. to be.
그리고 뽕나무의 경우 가지치기를 한 후 가지는 우수한 섬유자원임에도 불구하고 현재 거의 이용되지 못하고 폐기되고 있는 실정이다.And in the case of mulberry trees, although branches are excellent fiber resources, they are currently rarely used and discarded.
이러한 양잠의 부산물인 뽕나무 자원을 부가가치가 높은 상품으로 개발하여 잠업 농가의 새로원 소득원 개발 및 양잠업의 활성화를 가져올 수 있는 모색 방안이 대두되고 있다.
The development of mulberry resources, which are by-products of sheep slums, is being developed as a high-value-added product.
본 발명은 종래에 폐기되던 뽕나무 가지를 이용하여 발묵성이 우수하고 표면이 균일하는 등 물성이 우수한 상백지를 제조할 수 있는 뽕나무를 이용한 상백지의 제조방법을 제공함에 그 목적이 있다.
It is an object of the present invention to provide a method for producing white paper using mulberry, which can produce white paper having excellent physical properties such as excellent stainability and uniform surface using mulberry branches that have been discarded in the prior art.
이와 같은 목적을 달성하기 위한 본 발명은, 뽕나무 가지로부터 벗겨내어 얻은 흑피를 농도가 8~10 g/L의 수산화나트륨 용액을 이용하여 12~14시간 동안 증자시키고, 20~24시간 동안 방치하여 증해하여 얻은 백피를 고해 및 초지공정을 거쳐 상백지를 제조하는 것을 특징으로 하는 뽕나무를 이용한 상백지의 제조방법을 제공한다.In order to achieve the above object, the present invention, the black skin obtained by peeling off the mulberry branches, using a sodium hydroxide solution of 8 ~ 10 g / L concentration for 12 to 14 hours, and cooked by standing for 20 to 24 hours It provides a method for producing white paper using mulberry, characterized in that the white skin obtained by the step of beating and papermaking process.
그리고 상기 고해공정은 상기 백피에 대해 분산제를 투입한 상태에서 500~600rpm 속도로 20~40분간 교반하는 것이 바람직하다.And the beating step is preferably stirred for 20 to 40 minutes at a speed of 500 ~ 600rpm in the state in which the dispersant is added to the white skin.
또한, 상기 고해공정은 상기 백피에 대해 분산제를 0.02~0.04%를 투입하는 것이 좋다.
In addition, in the beating step, it is preferable to add 0.02% to 0.04% of a dispersant with respect to the white skin.
이하 본 발명의 뽕나무를 이용한 상백지의 제조방법을 상세히 설명한다.Hereinafter will be described in detail the method for producing white paper using the mulberry of the present invention.
본 발명의 뽕나무를 이용한 상백지의 제조방법은 뽕나무 가지로부터 벗겨내어 얻은 흑피를 증해하여 외피를 제거하여 백피를 얻고, 상기 백피를 고해 및 초지공정을 거쳐 상백지를 제조한다.In the method for producing white paper using the mulberry tree of the present invention, the black skin obtained by peeling off the mulberry branch is cooked to obtain the white skin by removing the skin, and the white skin is subjected to the beating and papermaking process.
상기 흑피는 뽕나무 가지를 가마에서 증기로 찐 후 껍질을 분리하여 얻는다. 뽕나무 가지는 폐자원의 재활용 측면에서 가지치기한 후 폐기되던 뽕나무 가지를 이용하는 것이 좋다.The black skin is obtained by steaming the mulberry branches with steam in a kiln to separate the bark. Mulberry branches are better to use the mulberry branches that were discarded after pruning in terms of recycling waste resources.
그리고 상기 흑피의 외피 뿐만 아니라 옹이자국을 별도의 공정을 거치지 않고 일공정에 의해 제거하기 위해 상기 흑피를 농도가 8~10 g/L의 수산화나트륨 용액을 이용하여 12~14시간 동안 증자시키고, 20~24시간 동안 방치하여 증해한다.And in order to remove not only the outer skin of the black skin but also the knotty scar by one step without using a separate process, the black skin is increased for 12 to 14 hours using a sodium hydroxide solution having a concentration of 8 ~ 10 g / L, 20 Leave for 24 hours and cook.
수산화나트륨의 농도가 8 g/L 미만인 경우 외피 및 옹이자국이 효과적으로 제거되지 못하여 옹이자국을 제거하기 위한 후공정이 요구되고, 농도가 10 g/L 초과인 경우 뽕나무의 섬유가 손상되거나 용출되어 섬유의 수율이 적어지고 강도 등의 물성이 저하되는 문제가 있다.If the concentration of sodium hydroxide is less than 8 g / L, the outer skin and knots are not effectively removed, and a post-process is required to remove the knots. If the concentration is more than 10 g / L, the mulberry fibers are damaged or eluted. The yield decreases and there is a problem in that physical properties such as strength are lowered.
상기와 같이 제조된 상기 상백지는 서화용지, 상장 종이 및 벽지 등의 다양한 용도로 사용될 수 있겠으나, 반드시 이에 한정되는 것은 아니다.The white paper prepared as described above may be used for various purposes such as calligraphy paper, listed paper, and wallpaper, but is not necessarily limited thereto.
수산화나트륨 용액으로 12~14시간 동안 증자시킨 후 옹이자국이 효과적으로 제거되도록 20~24시간 동안 방치하여 후숙하는 것이 좋다.After steaming for 12 to 14 hours with sodium hydroxide solution, it is better to leave it for 20 to 24 hours to remove knot marks effectively.
다음으로 상기 증해공정을 거쳐 얻은 백피를 고해한다. Next, the white skin obtained through the cooking process is beaten.
뽕나무 섬유의 경우 섬유장이 대략 17~32mm로 길어 그 상태로 초지할 경우 표면이 거칠고, 먹물의 번짐성이 균일하지 못하는 문제가 있다.In the case of mulberry fibers, the fiber length is roughly 17 to 32 mm, and the paper is rough in the state, and there is a problem in that the spread of ink is not uniform.
표면 및 먹물의 번짐성을 균일한 상백지를 얻기 위해 상기 고해공정은 상기 백피에 대해 분산제를 투입한 상태에서 500~600rpm 속도로 20~40분간 교반하는 것이 좋다. 500rpm 미만의 속도로 교반하는 경우 섬유의 절단율이 미비하여 장섬유가 존재하여 표면 및 먹물의 번짐성이 좋지 못하고, 600rpm 초과의 속도로 교반하는 경우 섬유가 지나치게 절단되어 단섬유가 대량 발생되어 강도 등의 물성이 저하되는 문제가 있다.In order to obtain a uniform white paper on the surface and ink spreading, the beating step may be stirred for 20 to 40 minutes at a speed of 500 to 600 rpm with a dispersant added to the white skin. When stirring at a speed of less than 500rpm, the cut rate of the fiber is insufficient, the long fiber is present, the surface and ink spreading is not good, and when stirring at a speed of more than 600rpm, the fiber is excessively cut and a large amount of short fibers are generated There is a problem that physical properties such as lowering.
그리고 섬유의 분산성을 향상시키기 위해 분산제를 상기 백피에 대해 0.02~0.04%를 투입하는 것이 좋다.
And in order to improve the dispersibility of the fiber, it is good to add 0.02% to 0.04% of the dispersant to the back skin.
본 발명의 뽕나무를 이용한 상백지의 제조방법은 종래에 폐기되던 뽕나무 가지를 재활용하여 표면이 균일하고 먹물의 번짐성이 균일하고 강도 등의 물성이 우수한 상백지를 제조할 수 있는 효과가 있다.
The method for producing white paper using the mulberry tree of the present invention has the effect of recycling the mulberry branches that have been disposed of in the past to produce a white paper having a uniform surface, uniform spread of ink, and excellent physical properties such as strength.
이하, 본 발명의 뽕나무를 이용한 상백지의 제조방법을 실시예를 들어 더욱 상세히 설명하면 다음과 같고, 본 발명의 권리범위는 하기의 실시예에 한정되는 것은 아니다.
Hereinafter, the method for producing white paper using the mulberry of the present invention will be described in more detail with reference to the following Examples, the scope of the present invention is not limited to the following examples.
[실시예 1]Example 1
전북 부안군의 잠업농가로부터 얻은 뽕나무가지를 가마에 넣은 후 증자시켜 껍질을 벗겨 내어 흑피를 얻었다. 그리고 흑피를 증해조에 넣은 후 12시간 동안 증자시킨 후 24시간 방치하여 외피 및 옹이자국을 제거하여 백피를 얻었다.Mulberry branches obtained from a latent farmhouse in Buan-gun, Jeonbuk, were put in a kiln, and then cooked and peeled to obtain black skin. Then, the black skin was added to the cooking tank, and then cooked for 12 hours, and left for 24 hours to remove the skin and knots to obtain white skin.
이때 증해조에는 농도 10 g/L의 수산화나트륨 용액을 투입하여 증해하였다.At this time, it was cooked by adding 10 g / L sodium hydroxide solution.
그리고 상기 백피를 표백한 후 고해조에 투입하여 500rpm 속도로 교반시켜 해리시킨 후 환망초지기를 이용하여 초지한 후 압축 및 건조시켜 상백지를 제조하였다. 고해조에는 백피에 대해 분산제를 0.02%를 투입하였고, 분산제로서는 Polyacrylamide(PAM)을 사용하였다.
After bleaching the white skin, the mixture was put in a high algae, stirred at a speed of 500 rpm, dissociated, and then papermaking was performed using a circular net paper machine, followed by compression and drying to prepare white paper. In the algae, 0.02% of dispersant was added to the white skin, and polyacrylamide (PAM) was used as the dispersant.
[실시예 2][Example 2]
실시예 1과 달리 증해공정시 농도 8 g/L의 수산화나트륨 용액을 이용하여 증해시켜 상백지를 제조하였다.
Unlike Example 1, a white paper was prepared by cooking using a sodium hydroxide solution having a concentration of 8 g / L in the cooking process.
[실시예 3]Example 3
실시예 1과 달리 고해공정시 백피에 대해 분산제를 0.04%를 투입한 상태에서 600rpm 속도로 교반시켜 상백지를 제조하였다.
Unlike Example 1, white paper was prepared by stirring at a rate of 600 rpm with 0.04% of a dispersant added to the white skin during the beating process.
[비교예 1]Comparative Example 1
실시예 1과 달리 흑피를 농도 10 g/L의 수산화나트륨 용액을 이용하여 2시간 동안 증자시켜 증해공정을 수행하여 상백지를 제조하였다.
Unlike Example 1, black skin was cooked for 2 hours using a sodium hydroxide solution having a concentration of 10 g / L to prepare a white paper.
[실험예 1]Experimental Example 1
실시예 1 내지 3 및 비교예 1에 대하여 옹이자국 등이 증해공정시 효과적으로 제거되었는지 여부를 확인하기 위하여 각 상백지를 육안으로 평가하였고, 상백지에 잡티 등의 이물질이 전혀없는 경우 '○'로, 잡티 등의 이물질이 존재하는 경우 'Δ'로 평가하였고 그 결과는 하기의 표 1과 같다.In Examples 1 to 3 and Comparative Example 1, each white paper was visually evaluated to check whether the knotting marks and the like were effectively removed during the cooking process, and if no foreign substances such as blemishes were found on the white paper, '○', When foreign matters such as blemishes were evaluated as 'Δ' and the results are shown in Table 1 below.
육안 평가
Visual evaluation
○
○
○
○
○
○
Δ
Δ
실시예 1 내지 실시예 3의 경우 증해공정시 외피 및 옹이자국 등이 모두 효과적으로 제거되어 육안 평가시 모두 '○'으로 평가된 반면, 비교예 1의 경우 증해공정시 옹이자국 등이 전부 제거되지 않아 옹이자국 등이 드문드문 존재하여 'Δ'로 평가되었다.
In the case of Examples 1 to 3, the outer shell and the knotting marks were effectively removed during the cooking process, and all of them were evaluated as '○' during the visual evaluation. Knots, etc. were sparse and evaluated as 'Δ'.
[실험예 2] 상백지의 강도적 특성Experimental Example 2 Strength Characteristics of Morphine Paper
실시예 1 내지 3 및 비교예 1의 상백지의 강도를 측정하였고, 그 결과는 표 2와 같다.The strength of the white paper of Examples 1 to 3 and Comparative Example 1 was measured, and the results are shown in Table 2.
강도
(mN·m2/g)
burglar
(mNm 2 / g)
MD
MD
24.7
24.7
24.9
24.9
24.8
24.8
23.3
23.3
CD
CD
22.3
22.3
22.5
22.5
22.7
22.7
21.6
21.6
표 2와 같이 실시예 1 내지 실시예 3의 경우 비교예 1에 비하여 MD(Machine direction) 및 CD(Cross directon)가 24.7mN·m2/g, 22.3mN·m2/g 이상으로 모두 우수하였다.
As shown in Table 2, the MD (Machine direction) and the CD (Cross Directon) were 24.7 mN · m 2 / g and 22.3 mN · m 2 / g or more, compared to Comparative Example 1, as compared to Comparative Example 1. .
[실험예 3] 상백지의 발묵성[Experimental Example 3] The inkability of the white paper
실시예 1 내지 3 및 비교예 1의 각 상백지에 대한 발묵성을 평가하기 위하여 먹물농도의 변화를 Spectrophotometer(NF 333, NIPPON DENSHOKU IND. Co., LTD)를 사용하여 측정하였고, 먹물반점의 면적을 화상분석기(Image Analyzer)를 사용하여 측정하였다. 그 결과는 표 3과 같다.The change of ink concentration was measured using Spectrophotometer (NF 333, NIPPON DENSHOKU IND. Co., LTD.) In order to evaluate the ink repellency of each white paper of Examples 1 to 3 and Comparative Example 1. Was measured using an Image Analyzer. The results are shown in Table 3.
Ink Density
(I.D)
Ink Density
(ID)
1.475
1.475
1.453
1.453
1.467
1.467
1.349
1.349
Area of blot
(mm2)
Area of blot
(mm 2 )
0.0130
0.0130
0.0128
0.0128
0.0135
0.0135
0.0129
0.0129
표 3과 같이 실시예 1 내지 3의 경우 먹물의 농도가 1.453으로 높게 나타났으며, 먹물의 면적이 0.0128 mm2 이상으로 먹물의 퍼짐이 시판중인 상백지와 비슷하였다.As shown in Table 3, in the case of Examples 1 to 3, the concentration of the ink was found to be 1.453, and the spread of the ink was larger than that of commercially available plain paper with an area of the ink of 0.0128 mm 2 or more.
Claims (3)
Peeled black mulberry peeled from the mulberry branches with a concentration of 8 ~ 10 g / L sodium hydroxide solution for 12 to 14 hours, left for 20 to 24 hours to cook the white skin obtained through the beating and papermaking process Method of producing white paper using mulberry, characterized in that to produce paper.
상기 고해공정은 상기 백피에 대해 분산제를 투입한 상태에서 500~600rpm 속도로 20~40분간 교반하는 것을 특징으로 하는 뽕나무를 이용한 상백지의 제조방법.
The method of claim 1,
The beating process is a method for producing white paper using mulberry, characterized in that for 20 to 40 minutes stirring at a speed of 500 ~ 600rpm in the state in which the dispersant is added to the white skin.
상기 고해공정은 상기 백피에 대해 분산제를 0.02~0.04%를 투입하는 것을 특징으로 하는 뽕나무를 이용한 상백지의 제조방법.The method of claim 2,
The beating step is a method for producing white paper using mulberry, characterized in that the dispersant is added 0.02 ~ 0.04% with respect to the white skin.
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