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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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This research was conduceted to investigate the feasibility of using deinked pulp of white ledger(DIP) for the manufacture of high quality premium tissue. The three types of tissues were prepared using the softener teated bleached DIP, softener treated mixed pulp of unbleached DIP and virgin pulp, and untreated mixed pulp of bleached DIP and virgin pulp, respectively, and their tensile index, softness, and brightness were measured and compared.
The bulk and surface softness increased only slightly by the addition of softener(0.2% mineral oil) into the bleached DIP. The tensile index was decreased by 1.5~30%, and the brightness was the rage of 86% to 87% ISO. The softener(0.2~0.8% mineral oil or dialkyl imidazoline) tratement of mixed pulp of unbleached DIP and virgin pulp improved the bulk and surface of tissue considerably. However, the brightness was low as 85% ISO or below. Although the softness of the tissue made from bleached DIP blended with virgin pulp was the lowest among three types of tissues evaluated, its tensile index was the highest and brightness was 87~88% ISO. Based on the results, it may be predicted that the bleached DIP blended with virgin pulp is the best raw material for the manufacture of high quality premium tissue if softener teatment is applied to mixed pulp, because the softness can be improved by the addition of softener.
In general, the softness of tissue was improved with the increase in the amount of softener. However, the tensile index inversely proportional to the amount of sftener added. Dialkyo imidazoline was more effective than mineral oil with respect to the improvement in softness, even though the loss in tensile index was severe with the treatment of dialkyo imidazoline.
The bulk and surface softness increased only slightly by the addition of softener(0.2% mineral oil) into the bleached DIP. The tensile index was decreased by 1.5~30%, and the brightness was the rage of 86% to 87% ISO. The softener(0.2~0.8% mineral oil or dialkyl imidazoline) tratement of mixed pulp of unbleached DIP and virgin pulp improved the bulk and surface of tissue considerably. However, the brightness was low as 85% ISO or below. Although the softness of the tissue made from bleached DIP blended with virgin pulp was the lowest among three types of tissues evaluated, its tensile index was the highest and brightness was 87~88% ISO. Based on the results, it may be predicted that the bleached DIP blended with virgin pulp is the best raw material for the manufacture of high quality premium tissue if softener teatment is applied to mixed pulp, because the softness can be improved by the addition of softener.
In general, the softness of tissue was improved with the increase in the amount of softener. However, the tensile index inversely proportional to the amount of sftener added. Dialkyo imidazoline was more effective than mineral oil with respect to the improvement in softness, even though the loss in tensile index was severe with the treatment of dialkyo imidazoline.
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