• 한국식품저장유통학회지
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• 제6권4호
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• pp.406-410
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• 1999

기능성 MA필름을 생산하여 이를 골판지 상자의 내부에 첩합시킨 FC상자의 활용가능성을 조사하고자 골판지 상자와 기능성 MA필름대를 골판지 상자 내부의 1면당 4곳씩 첩합시킨 FC포장구와 0.03, 0.05mm 두께의 LDPE 필름(30LD, 50LD)으로 애호박을 포장하여 2$0^{\circ}C$에 저장하여 품질변화를 조사한 결과, FC 상자와 30LD와 50LD 포장구는 대조구 보다는 중량 감소율이 현저히 낮았으며 Vitamin C의 함량도 대조구 보다 FC 포장구가 26% 높게 유지되고 있고, 클로로필도 대조구 보다 16% 정도 더 높게 유지되고 있었다. 소비자 측면에서 살펴본 시장성도 FC 포장구는 대조구 보다는 2-3일, LD포장구 보다는 1-2일정도 더 시장성이 있는 것으로 나타났다.

• 펄프종이기술
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• 제39권3호
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• pp.30-35
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• 2007

Folding performance is very important in box manufacturing process using paperboard. To evaluate the folding performance of various paperboards, we measured the folding moment and folding behavior at the different folding angle and rate conditions. When linerboard with grammage of $300\;g/m^2$ was folded up to $90^{\circ}$, the compression break and delamination of sheet were observed. The maximum folding moment was little affected by folding angle, but it was increased logarithmically with folding rate. And the effect of paperboard thickness was significant. The maximum folding moment of MD sample was higher than one of CD sample by 40%.

• 한국식품영양과학회지
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• 제29권1호
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• pp.76-79
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• 2000

The effects of packaging conditions on freshness extension of squash (Cucurbita moscata) were investigated during 7-day storage at 2$0^{\circ}C$. Weight loss of squash packed with corrugated paperboard box (control) was 5.5%, and those of LDPE (low density polyethylene, Ф0.02 mm), LDPE (Ф0.04mm) film and EPS (expanded polystyrene) box were 0.9%, 0.8%, and 1.1%, respectively. Firmness of EPS was 11% higher than that of control, chlorophill content of squash packed with EPS box was 18.9% higher, and total ascorbic acid content of squash packed with EPS box was 29.4% higher than that of control. Quality of packed squash was not different between EPS packages and LDPE packages. Decay of control was 1~2 pieces per box, but was not found in the LDPE, EPS box. Preferences in overall appearences of LDPE, EPS box was better than those of control.

• 한국포장학회지
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• 제5권1호
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• pp.13-20
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• 1999

Not only is it important that the physical properties of the paperboards be appropriate for the intended end use, but the proper arrangement of the component in the built-up board is essential for attaining the optimum moment of inertia and the maximum load-carrying ability in a box. It is known to be impossible to estimate the stress distribution and deflection pattern by experiments or theoretical analysis when the corrugated fiberboard get the bending force. This study was tried theoretical and finite element analysis to analyze structural strength characteristics of corrugated fiberboards. If the linerboard and corrugating medium of every corrugated fiberboards is made from the same material, the location of neutral axis comes close to inside liner in order of DMA, DM, DMB, SW and DW, and moment of inertia of area decreases in order of DMA, DMB, DW, DM and SW. With the finite element analysis, deflection of applied loads represented SW, DM, DMA, and TW in the order of their value.

• 펄프종이기술
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• 제39권2호
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• pp.54-59
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• 2007

Cereal, computer software, wine, small appliances, and fast foods are examples of products that have switched from folding carton to microflute corrugated paperboard. Microflute corrugated paperboards have their unique wonderful packaging characteristics that are driving forces for people to use more and more. Good strength property, excellent shock absorbing ability, and beautiful outer appearance of microflute corrugated paperboards go hand and hand with their environmental advantages. It is known that physical properties of microflute corrugated paperboards depend on not only properties of base paper but corrugator operating conditions. This study was carried out to investigate on the corrugator's optimum operating conditions for making micro flute corrugated paperboards. Lab-scaled micro flute corrugator was installed and run with systematic changes of operation conditions to investigate the effects of operation conditions on physical properties of micro flute corrugated paperboards.

• 한국포장학회지
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• 제4권2호
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• pp.18-23
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• 1998

개발한 EPS 포장상자가 오이의 신선도 유지효과 기능이 있는지의 여부를 분석코자 오이를 골판지상자와 0.02와 0.04mm 두께의 LDPE필름으로 포장 $20^{\circ}C$에 저장하면서 신선도 유지효과를 비교하였다. 저장 7일후 중량감소는 대조구는 4.9%, EPS 상자는 0.8%의 중량감소가 나타났고, 경도는 대조구 보다 필름구와 EPS 포장구에서 높았으며 비타민C도 EPS 포장구가 대조구 보다 15% 높게 유지되고 있었고 클로로필 함량은 EPS 포장구가 대조구 보다 21% 높게 유지되고 있었다. 부패는 포장구간에 나타나지 않았으며 대조구에서 표면이 노랗게 변하였으나 필름구와 EPS에서는 변하지 않았다 EPS 포장상자는 신선도 유지효과가 기존의 골판지상자 보다 더 우수하였다.

• 한국포장학회지
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• 제4권2호
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• pp.12-17
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• 1998

개발한 EPS 포장상자가 농산물의 신선도 유지효과 기능이 있는지의 여부를 분석코자 배를 포장하여 $20^{\circ}C$에 저장하면서 골판지상자와 0.02와 0.04mm 두께의 LDPE필름으로 포장한 것들과 신선도 유지효과를 비교하였다. 저장 50일 후 중량 감소는 대조구는 4.4%, EPS 상자는 0.7%의 중량감소가 나타났고, 비타민C도 2.12와 2.63 mg%로 EPS 포장구가 20% 높게 유지되고 있었다. 당도와 산도는 포장구간에 큰 차이가 있었으며 부패는 대조구는 상자당 1-2개과가 발생했으나 EPS 포장구는 발생하지 않아 개발한 EPS 포장구를 신선도 유지를 위한 유통용 상자로 활용가능성이 확인되었다.

• Journal of Biosystems Engineering
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• 제27권6호
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• pp.557-564
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• 2002

Corrugated board is an efficient low-cost structure material fur the boxes that are widely used for transporting, storing and distributing goods. Corrugated board is also considered as an orthotropic because the principal material directions are the same as in paperboard. The purpose of this study was to elucidate the principal design parameters of ventilating box through the FEA on the various types of ventilating hole. From the viewpoint of the stress distribution and stress level, the optimum pattern and location of the ventilating hole were vertically oblong, and symmetry position with a short distance to the right and left from the center of front and rear panel. And, the optimum location and pattern of hand hole were a short distance to the top from the center of both side panels, and modified shape to increase the radius of curvature of both side in horizontal oblong. In general, the optimum pattern and location of both the ventilating hole and hand hole based on the FEM analysis were well verified by experimental investigation. It is suggested that decrease in compressive strength of the box could be minimized in the same ventilating hole area under the condition of the length of major axis of ventilating hole is less than 1/4 of box length, the ratio of minor axis/major axis is 113.5∼l/2.5, and number of the ventilating holes is even and symmetrical.

• 한국식품저장유통학회지
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• 제8권4호
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• pp.345-350
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• 2001

개발한 EPS 포장상자가 사과의 신선도 유지효과 기능이 있는지의 여부를 조사코자 사과를 포장하여 2$0^{\circ}C$에 저장하면서 골판지상자와 0.02와 0.04mm 두께의 LDPE필름, 기능성 MA필름과 50배로 발로시킨 EPS 상자에 사과를 15kg씩 포장하며 포장재간의 신선도 유지 효과를 비교하였다. 저장 40일 후 중량감소는 대조구는 5.7 %, EPS 상자는 0.5%의 중량감소가 나타났고, 비타민C도 2.06과 2.31mg%로 EPS 포장구가 높게 유지되고 있었다. 당도와 산도는 포장구간에 큰 차이가 없었으며 부패의 경우 대조구는 상자당 3-5개과가 발생했으나 EPS포장구는 발생하지 않았으며 외관도 양호한 것으로 나타났다.

• 한국포장학회지
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• 제7권1호
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• pp.9-15
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• 2001

Top-to-bottom compression strength of corrugated fiberboard boxes is partly dependent on the load-carrying ability of the central panel areas. The ability of these central areas to resist bending under load will increase the stacking strength of the box. The difference of box compression strengths, among boxes which are made with identical dimensions and fabricated with same components but different flute sizes, is primarily due to difference of the flexural stiffness of the box panels. Top-to-bottom compression strength of a box is accurately predicted by flexural stiffness measurements and the edge crush test of the combined boards. This study was carried out to analyze the flexural stiffness, maximum bending force and maximum deflection for various corrugated fiberboards by experimental investigation. There were significant differences between the machine direction (MD) and the cross-machine direction (CD) of corrugated fiberboards tested. It was about 50% in SW and DW, and $62%{\sim}74%$ in dual-medium corrugated fiberboards(e.g. DM, DMA and DMB), respectively. There were no significant differences of maximum deflection in machine direction among the tested fiberboards but, in cross direction, DM showed the highest value and followed by SW, DMA, DMB and DW in order. For the corrugated fiberboards tested, flexural stiffness in machine direction is about $29%{\sim}48%$ larger than cross direction, and difference of flexural stiffness between the two direction is the lowest in DMA and DMB.