• Title/Summary/Keyword: 펄프몰드

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Optimization of Wet Pulp Mold Process and Reduction of Drying Energy (습식 펄프몰드 생산공정의 공정개선 및 건조에너지 절감 방안)

  • Sung Yong Joo;Ryu Jeong-Yong;Kim Hyung Jin;Kim Tae Keun;Song Bong Keun
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.36 no.3
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    • pp.83-90
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    • 2004
  • Pulp mold is one of the famous environmental friendly materials, which made from re cycled materials such as old newsprints through the environmental friendly processes. Furthermore, the used pulp mold can be easily recycled and the pulp mold itself is biodegradable. However, the higher cost and some deficiency in physical properties of pulp mold have been considered as issues to be overcome for a substitute for polymeric packaging materials such as EPS (Expandable Polystyrene). The way for the optimization of a pulp mold mill was proposed in this report. The possible reduction of drying energy was calculated by using a computer simulation method, which could Provide the detailed information about mass balance of overall process. The simulated results showed a great possible curtailment of production cost by improving the forming systems, for example, increasing the temperature and the dryness of a wet pulp mold.

The Effect of Acidic Liquid from Carbonized Rice Hull Treatments to Molded Fiber Packages on the Shelf Life of Egg (왕겨초액을 처리한 계란포장용 펄프몰드의 저장성 유지 효능 분석)

  • Min, Choon-Ki;Jo, Joong-Yeon;Shin, Joon-Sub;Lee, Se-Un;Jeon, Ki-Hong
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • 2011.10a
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    • pp.335-343
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    • 2011
  • We examined the effect of the acidic liquid from carbonized rice hull(ALCRH) treatments to molded fiber packages(MFP) on weight, Haugh unit, pH and microbial activity of egg to extend the shelf life in egg packaging. Higher concentration and surface spray treatment of the acidic liquid extended the shelf life of egg. ALCRH treatment to MFP improved the performance of the packaging for egg in terms of decreased weight loss and retarded microorganism growth of eggs during storage.

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Development of Higher Functional Coating Agents for Pulp Mold (III) Manufacture of starch derivatives for coating - (펄프몰드용 새로운 고기능 코팅제 제조기술개발(제3보) -코팅용 전분유도체 제조-)

  • Kang Jin Ha;Lim Hyun A
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.36 no.4 s.107
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    • pp.49-59
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    • 2004
  • This study was carried out to obtain the basic data for producing higher functional coating agents for pulp mold by evaluating various kinds of starch derivatives. At that time, four kinds of starch derivatives were manufactured for making coating agents respectively. Physical properties of coated paperboards were tested. Conclusions obtained from this results were as follows. The water and oil resistance of hydroxypropylated, cyanoethylated and carboxymethy­lated starch were high when degree of molar substitution(DS) of propylene oxide, acrylonitrile and sodium monochloroacetate were 0.18, 0.07 and 0.009, respectively. Also, the those of crosslinked starch were high when degree of crosslinking of epichlorohydrin was 0.02. Consequently, $8\%$ solution of carboxymethylated starch made with DS 0.009 of monochloroacetate was the best among coating agents from starch derivatives men­tioned above.

Development of Higher functional Coating Agents for Pulp Mold (I) (펄프몰드용 새로운 고기능 코팅제 제조기술개발(제1보) - 합성 및 천연코팅제의 기능 구명 -)

  • 강진하;임현아
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.34 no.4
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    • pp.37-43
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    • 2002
  • In recent years, numerous studies have been carried out to find out the possible substitution of PE-coated paperboards used in packaging of watery or oily foods. Accordingly, this study was carried out to obtain the basic data for producing higher functional coating agents for pulp mold by evaluating various kinds of synthetic and natural coating agents on the market. Physical properties of coated paperboards were tested. Conclusions obtained from this study were as follows. AKD and PVA showed higher functions than the other synthetic coating agents, while functions of CMC, Com starch and Oxidized starch were higher than those of other natural coating agents. Based on concentrations, AKD 0.5%, PVA 10%, CMC 1.5%, corn starch 6% and oxidized starch 8% were appeared as the proper concentrations. W3 consider that AKD may be suitable for the storage of higher moisture vegetables and other food, and PVA may be suitable for higher oily fried food.

Manufacturing and Characterization of Pulp Mold with Rice Husk Fiber (왕겨섬유를 포함한 펄프몰드 제조 및 특성 평가)

  • Kim, Hyung Min;Sung, Yong Joo;Park, Young Seok;Shin, Jea Chul
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.48 no.3
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    • pp.66-72
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    • 2016
  • The applicability of rice husk fiber as a raw material for eco-friendly pulp mold was evaluated in this study. The higher demand of environmental friendly packaging material resulted in the more interest for the natural fiber based pulp mold. The rice husk which is an abundant agricultural byproduct in Asia could be defiberized by an alkaline digestion process. The changes in the pulp mold making process and the properties of pulp mold by the addition of the rice husk were investigated. The addition of rice husk fiber to the pulp mold made with OCC or UBKP resulted in the increase in drainage at the pulp mold forming process. In case of UBKP pulp mold, the addition of rice husk fiber increased the drying efficiency after pulp mold forming since the structure of pulp mold became more bulkier by the addition of the rice husk fiber. Those results showed the rice husk fiber could be applied to the pulp mold manufacturing as one of the eco-friendly natural fiber resources.