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자료유형
학술저널
저자정보
저널정보
한국펄프·종이공학회 펄프·종이기술 펄프·종이기술 제36권 제3호
발행연도
2004.9
수록면
52 - 59 (8page)

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The greater increase of the demand for environmental friendly materials especially for packaging industry leads to the larger interest in the reusable and recycable materials such as pulp mold Although the pulp mold has great characteristics for packaging, some deficiency compared with other packaging material like EPS(Expandable Polystyrene) need to be overcome, for example, the relative higher cost In this report, since the water dram age rate at the forming zone of a wet pulp mold process could have a great influence on the economical efficiency not only by mcreasmg machme speed but also reducing the drying energy, the optimum ways for increasing drainage were investigated The mechanism of vacuum drainage in pulp mold forming was successfully evaluated by using RDA(Retention and Darinage Analyzer) Since the conditions of stock were greatly affected by the pulping time of low consistency pulper, the optimum pulping time was investigated with considerations of all stock preparation processes The change of stock temperature and the addition of poly electrolyte could Improve the vacuum drainage rate It was founded that the wire mesh types of mold former had a little influence on the retention because of the relatively mild vacuum drainage However, the bigger size of dewatering hole showed better drainage rate and could reduce the plugging and can tamination of mold.

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