Evaluation of the Fruit Bag Property (II) – Property of Pear Bag Paper Used for Domestic Environment

초록

In this study, physical properties of ten kinds of the conventional pear bag papers were evaluated. The paper samples showed tensile strength ranged with 1.58-4.03 kN/m (machine direction, MD) and 0.35-1.25 kN/m (cross direction, CD). Burst strength of the samples were in the range with 56.3-124.1 kPa (MD) and 79.1-156.4 kPa (CD). Air resistance (permeability) of the outside paper were divided into two groups (group A: 10-30 sec/100 mL, group B: 40-55 sec/100 mL). Air permeability of the inner side paper were also divided into two groups (group C: 10-20 sec/100 mL, group D: 30-45 sec/100 mL), exclusive of sample E (75 sec/100 mL). Meanwhile, the two samples (D, J) showed similar results of total air permeability (the outside paper + the inner side paper) with 27.2 and 26.9 sec/100 mL, respectively. However, unlike the air permeability, water vapor permeability (the outside paper + the inner side paper) of the two samples (D, J) showed different results with 2.6 and 1.4 mg/cm2/hr. From these results, It was considered that water vapor permeability characteristics of the papers were closely related to the air permeability as well as water resistance(water drop contact angle). © 2018 Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.

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