• 펄프종이기술
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• 제40권5호
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• pp.70-80
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• 2008

Rebuilding an existing paper machine is often a very profitable way for papermakers to increase the cash flow created by an older paper machine. Metso Paper has placed particular emphasis in recent years on developing concepts and products specifically for rebuild needs. The outcome of this work can now be seen as a wide selection of products offering quite possibly the best coverage of all time of specific improvement targets. Different needs can be addressed through truly different solutions. Selecting the best-fit alternatives will offer great upgrade options for all paper machines and paper grades. Metso Paper's long experience with high-speed paper machines has been put to good use to create more cost-effective small and mid-sized solutions with the reliability and quality of bigger and faster paper machines. This paper has discussed some of the most interesting and latest configurations available today for paper machine and finishing area rebuilds.

• 펄프종이기술
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• 제47권4호
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• pp.168-176
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• 2015

The history of paper folding had continued before that the paper manufacturing technique was spread in the 3rd century and it was used for witchcrafts and rituals. Fold means as was used with the word Cheop and Jeopji. In the Three Kingdoms period, the conical hat with fabric spread as customs, then it was made of the paper that led the popularization of paper folding form the early Joseon Dynasty. Paper crafts and living things with paper are mostly derived from fabrics except the paper written for saint's name related God. In the period of the tribe nation, witchcrafts and rituals brought to Japan via the Korean Peninsula, as a result Kami which means God in Japanese that becomes the paper. The first folding fan was made to develop from the fan, Baekseopsun in the end of Goryeo Dynasty. It was an outstanding application of paper folding crafts. Since the early Joseon Dynasty, paper flower folding has considered as the virtue of savings and has developed one of the Korean traditional paper arts. Paper folding has also developed in the practical uses like the other Korean paper arts but paper folding that was developed as seasonal customs, playing or religious purpose showed a different trend from Korean paper arts.

• 복식문화연구
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• 제19권4호
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• pp.851-862
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• 2011

The purposes of this study were to identify the material manipulation techniques for paper garments and their characteristics. Reference books or articles were reviewed and catalogues from paper garments exhibition or show, brochures from Paper Museums, and internet sites of paper fashion designers were selected for analysis. Paper has much similarity with natural cellulose textiles in appearances and contents but has much distinct differences in their physical characteristics such as strength, durability, washability, and resilience, and could be treated as one category of textiles. Paper garments were developed with practicality and functionality for the poor and Buddist monks at first but progressed into more aesthetics later for the rich. Paper garments could be divided into 4 categories of garments made of paper, paper thread fabric or knit, modified paper with wanter, and beaten bark of mulburry bush. Paper can be manipulated by coloring & cutting, bonding, or quilting and bonding or quilting can reenforce the strength of paper but cannot increase flexibility. Paper manipulated by weaving or knitting has very similar physical properties as cotton or linen and ideal for summer textiles. Paper can be manipulated with water to make a paper paste and bodice can be moulded with paper paste or Joomchied. Also we can express beautiful patterns on the surface of paper by washouting. Konnyaku paste or lacquer can be used to make paper garments to be waterproof.

• 한국포장학회지
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• 제3권2호
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• pp.33-42
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• 1996

The portion of the recycled paper and paper board packaging material has been the highest in recycled municipal solid waste since 1960 but still the portion of the discarded paper and paper board packaging material is the highest (32.3%) in whole discarded municipal solid waste in USA. In order to reduce more the discarded paper and paper board, the common municipal solid waste treatments were compared and recycling treatment was still recommended for the the discarded paper and paper board rather than of the waste treatments, landfill, incineration, and source reduction. In this paper, the obstacled of recycling treatment of the paper and paper board in municipal solid waste and new application of recycled paper and paper board packaging material are discussed.

• 반도체디스플레이기술학회지
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• 제19권4호
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• pp.116-120
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• 2020

In this paper, we developed an electrochemical glucose sensor strip using a paper substrate. The paper glucose sensor strip is eco-friendly because it uses paper as a substrate, and it has the advantage that it can be manufactured only with four printing, drying and cutting processes. The paper glucose sensor is significantly simplified by the production process than the conventional glucose sensors because the production of only four printing on the paper substrate. In this paper, eco-friendly tracing paper was used to develop a paper glucose sensor strip, and screen-printing technology was used to form a carbon/silver electrode, insulating layer and glucose oxidase(GOD) layer. The developed paper glucose sensor strip has a flat structure with a size of 30 × 4.6 ㎟, and blood injection is a type of direct contact with the exposed enzyme layer above the strip. In this paper, the performance of paper glucose sensor strips was evaluated by analyzing the cyclic voltammetry(CV) and chronoamperometry(CA) characteristics.

• 한국잠사곤충학회지
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• 제41권3호
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• pp.201-204
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• 1999

The silk/paper mulberry paper was prepared by recycling of the hard twisted silk waste and its mechanical properties was investigated. The silk waste was pretreated with sodium hydroxide(0.5%) and sodium carbonate(4%) to make it easy for beating and fibrillation. The silk/paper mulberry hand sheet paper has better mechanical properties of tearing strength and air permeability compared with the traditional and modified traditional paper. Treating with alkaline solution, the hard twisted silk waste could be used for an novel composite material.

• 한국건축시공학회지
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• 제2권3호
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• pp.115-121
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• 2002

The purpose of this study is investigating characteristics of paper-ash mortar according to partial replacement of fine aggregate by Paper-ash. For this purpose, selected test variables were mixing ratio with two levels of mortar(1:2, 1:3), and 3 types of paper-ash(A, B, C), and paper-ash content with four levels(5%,, 10%, 15%, 20%). As a result of this study, in all mixes with partial replacement of fine aggregate by Paper-ash generally Produced Paper-ash mortar with decreased compressive strength at ail age as compared to ordinary mixes. The mixing rate 1:2 was the higher increasing rate of strength than the mixing rate 1:3. The flow value and unit weight of paper-ash mortar were decreased with increasing of the paper-ash content. And the thermal conductivity of the thermal conductivity of the paper-ash mortar was lower than normal mixing without paper-ash.

• 펄프종이기술
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• 제33권3호
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• pp.52-58
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• 2001

The aim of using grape-bagging paper is preventing damages by light and harmful insects during grape growth. The number of using grape-bagging paper has been increasing because advantages of using it have been confirmed. A technology to produce it has not been fully developed yet. In this study properties of the grape-bagging paper were analyzed. Results showed that air-permeability and transmitted light of grape-bagging paper were important. It was tried to see the influence of paper structure on air-permeability, transmitted light and the grapes saccharinity. For making different structure of grape-bagging paper, papers were produced with different freeness levels at several pressure conditions. Coloration time of Campbell grape with new bagging paper started about 5 days earlier than that with usual bagging paper, It was also possible to improve the saccharinity about 0.1-N0.8 Brix. Because new bagging paper has a low apparent density, it affected the saccharinity and coloration time of grape.

• 한국포장학회지
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• 제5권2호
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• pp.38-41
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• 1999

This study was carried out to investigate improvement of kraft paper sack mixed with recycled paper for sugars and assorted feeds. Four Plies of kraft paper mixed with recycled paper(basis weight : $80g/m^2$) were taken place of two plies of kraft paper made from all pulp(basis weight : $98g/m^2$) and one ply of kraft paper mixed with recycled paper(basis weight : $80g/m^2$) for sugar 30kg. Three Plies of kraft paper mixed with recycled paper(basis weight : $80g/m^2$) were taken place of two plies of kraft paper made from all pulp(basis weight $98g/m^2$) for sugar 15kg and assorted feed 25kg. Physical properties, tensile strength, internal tearing strength and bursting strength, were improved by exchanging kraft paper mixed with recycled paper for kraft paper from all pulp and so kraft paper sacks made from all pulp were no damage in handling. They had so high friction coefficient that there was no danger of collapse on pallet by slipperiness in transportation and handling. And they had high printability so disappearance of printing by the contact with other paper sack in transportation was not found.

• 한국가구학회지
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• 제18권3호
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• pp.177-187
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• 2007

Since the 1960s when paper began to use as a structural material in furniture, design, the way of using paper was dramatically changed. Before the 1960s, paper was used mostly in decorative purposes like paper $mach\acute{e}$. The development of consumer culture in the 1960s created a new trend for paper in design. Paper became a material for dresses and chairs. Also, the types of paper that adapted on furniture varies from cardboard, paper tubes, glassine paper, honeycomb, etc. The variation of the material results to make possible to create a new form. Moreover, paperboard was broadly used in current society in such area that mostly structural based as architecture. Paper gives great opportunity not only to consumers to buy furniture in inexpensive price also to manufacturers to produce furniture and to test market easily, Moreover, paper furniture is mostly fun. Therefore, the creation of paper furniture becomes diverse in terms of design concept. This study explored the characteristics of paper furniture responding to social backgrounds by decade. Relation between types of paper and the characteristics is one of main points in this research. This study covers furniture design from the 1960s to present and mostly focuses on seating furniture where paper used as structural material. Researching on patent records and contemporary periodicals gave me helpful information on details of design process and consumer culture.