In order to optimize designing process of corrugated fiberboard boxes for agricultural products, first of all, compositions of corrugated fiberboard boxes currently being on the market were investigated. The compression and bursting strength of each liner were experimentally evaluated on the various...
In order to optimize designing process of corrugated fiberboard boxes for agricultural products, first of all, compositions of corrugated fiberboard boxes currently being on the market were investigated. The compression and bursting strength of each liner were experimentally evaluated on the various conditions of relative humidity and distribution period, and then, analyzed by linear regression analysis. The experimentally determined parameters were further developed with Kellicutt model and bursting strength calculation, and utilized to make a computer program for the corrugated fiberboard box design. Material compositions of corrugated fiberboard boxes for domestic agricultural products varied, for example, 20 for apples, and 41 for oriental melons. Boxes for oriental melons were more expensive and heavier than boxes for apples as much as 141 Korean won/m², 0.34 kg/m², respectively. Bursting strength of oriental melon boxes was 5 to 6 kg_f/cm² higher than that of apple boxes. From the result of study about quality of liners used for making corrugated fiberboard boxes, IK, SC, and KA liners were graded "A", but SK, K₂, A, while AS were grade "C", the lowest among the liners examined. No significant changes in compression strength of each linerboard were found on the different temperature range. At the 66 percents of relative humidity, IK liner board lost little of its compression strength compared to others. At the relative humidity 93 percents, KA liner board lost its compression strength only 40 percents while SK liner board lost up to 56 percents. Without consideration of humidity effect, SK liner board performed superior in terms of quality versus unit price value among the liners, but KA liner was better both at 66 percents and 93 percents of relative humidity conditions. For corrugated mediums, S medium at 93 percents of RH lost its ring crush strength only 40 percents, but AS medium lost its strengh as much as 58 percents. The result of this study showed that KA liner board was the most cost effective with good compression strength material for liner boards, and K₂ for corrugated mediums. From the result of prediction modeling of ring crush strength in various humidity conditions, R square values were ranged from 0.59 to 0.97. At 55 percents of RH or below, R square values were relatively low, but at 66 percents of RH or higher, the values were 0.85 or higher. The significance values were lower than 0.001 at every RH condition. For the case of bursting strength, the R square values were over 0.85 at 66% RH or higher, and significance values were lower than 0.001. Level of significance of Experimented values was about 80 percents of predicted values and R square values were between 0.89 to 0.95. For box compression strength, experimented values were higher than predicted value and R square values were between 0.94 to 0.99. From the study above, the design software to calculate compression strength, bursting strength, material price, and weight of corrugated fiberboard box was developed using Visual basic 6.0 edition. This software will help farmers greatly to save their expenses by designing optimum corrugated board boxes possible.
In order to optimize designing process of corrugated fiberboard boxes for agricultural products, first of all, compositions of corrugated fiberboard boxes currently being on the market were investigated. The compression and bursting strength of each liner were experimentally evaluated on the various conditions of relative humidity and distribution period, and then, analyzed by linear regression analysis. The experimentally determined parameters were further developed with Kellicutt model and bursting strength calculation, and utilized to make a computer program for the corrugated fiberboard box design. Material compositions of corrugated fiberboard boxes for domestic agricultural products varied, for example, 20 for apples, and 41 for oriental melons. Boxes for oriental melons were more expensive and heavier than boxes for apples as much as 141 Korean won/m², 0.34 kg/m², respectively. Bursting strength of oriental melon boxes was 5 to 6 kg_f/cm² higher than that of apple boxes. From the result of study about quality of liners used for making corrugated fiberboard boxes, IK, SC, and KA liners were graded "A", but SK, K₂, A, while AS were grade "C", the lowest among the liners examined. No significant changes in compression strength of each linerboard were found on the different temperature range. At the 66 percents of relative humidity, IK liner board lost little of its compression strength compared to others. At the relative humidity 93 percents, KA liner board lost its compression strength only 40 percents while SK liner board lost up to 56 percents. Without consideration of humidity effect, SK liner board performed superior in terms of quality versus unit price value among the liners, but KA liner was better both at 66 percents and 93 percents of relative humidity conditions. For corrugated mediums, S medium at 93 percents of RH lost its ring crush strength only 40 percents, but AS medium lost its strengh as much as 58 percents. The result of this study showed that KA liner board was the most cost effective with good compression strength material for liner boards, and K₂ for corrugated mediums. From the result of prediction modeling of ring crush strength in various humidity conditions, R square values were ranged from 0.59 to 0.97. At 55 percents of RH or below, R square values were relatively low, but at 66 percents of RH or higher, the values were 0.85 or higher. The significance values were lower than 0.001 at every RH condition. For the case of bursting strength, the R square values were over 0.85 at 66% RH or higher, and significance values were lower than 0.001. Level of significance of Experimented values was about 80 percents of predicted values and R square values were between 0.89 to 0.95. For box compression strength, experimented values were higher than predicted value and R square values were between 0.94 to 0.99. From the study above, the design software to calculate compression strength, bursting strength, material price, and weight of corrugated fiberboard box was developed using Visual basic 6.0 edition. This software will help farmers greatly to save their expenses by designing optimum corrugated board boxes possible.
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