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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effect of Carrying Slots on the Compressive Strength of Corrugated Board Panels) ผู้เขียน: ดร.ธัญญารัตน์ จิญกาญจน์, รองศาสตราจารย์ ,  Pattamaporn Boonchu, Sanivan Bao-Ban สื่อสิ่งพิมพ์:pdf AbstractThis research is aimed at studying effects of the carrying slots on the compressive strength of corrugated board panels. Factors of interest include shape, position and size of the carrying slots. The result reveals that corrugated board with circle shape slotting shows the smallest reduction in compressive strength compared to other slotting shapes. However, perforated style shows better performance in compressive strength than the true cut slot. Furthermore, compressive strength of the board decrease as the slot position is located away from the center of the board. Also, the smaller the slot size, the higher the compressive strength. The results of this study can be applied in structural design of the corrugated boxes for suitable service environment. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Water Resistance, Compression Strength and Dynamic Mechanical Analysis of Corrugated Board Coated with Bio-Based Materials) ผู้เขียน:ดร.ธัญญารัตน์ จิญกาญจน์, รองศาสตราจารย์, ณัฏฐพิชา ทรัพย์ประทานพร สื่อสิ่งพิมพ์:pdf AbstractWater resistance is a major concern for corrugated board and this property can be enhanced through coating with bio-based materials. This research investigated the water resistance, compression strength and dynamic mechanical properties of corrugated board coated with bio-based materials. Four types of bio-based materials were observed—namely, hydrophobic modifi ed starch, zein, stearic acid and beeswax. Low-level concentrations of all bio-based materials (1–3%, w/w) were investigated. The results showed that the water contact angles of corrugated boards coated with hydrophobic starch, stearic acid and beeswax increased signifi cantly, ranging from 3 to 9%. In the case of zein coating, the water contact angle decreased with respect to its concentration. Further testing of the compression strength of coated corrugated boards indicated a signifi cant decrease of edge crush test for most treatments, except for hydrophobic starch coating. However, the fl at crush test values remained unchanged. The results of dynamic mechanical analysis showed that the storage modulus of corrugated boards increased after coating. |
 ที่มา:การประชุมวิชาการ ครั้งที่ 47 มหาวิทยาลัยเกษตรศาสตร์หัวเรื่อง:การศึกษาพฤติกรรมยึดติดของกาวในการผลิตแผ่นกระดาษลูกฟูก |
ที่มา:การประชุมทางวิชาการของมหาวิทยาลัยเกษตรศาสตร์ ครั้งที่ 48หัวเรื่อง:อิทธิพลของการเคลือบพอลิเมอร์ชีวภาพต่อสมบัติของแผ่นกระดาษลูกฟูก |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Physicochemical Properties of Modified Cassava Flour and Starch for Corrugated Board Adhesive) ผู้เขียน:Woaathichai Narkrugsa, Emmerich Berghofer สื่อสิ่งพิมพ์:pdf AbstractCassava flour and starch were changed in their physicochemical properties after being modified by cooking extrusion or drum drying, and by adding chemical reagents (5% w/w borax and 1% w/w sodium hydroxide) to extruded and drum dried products. After extrusion and drum drying, the products had a higher water absorption index (WAI) and water solubility index (WSI) than they have had before. Regarding to capillary viscosity, the extruded flour had the lowest viscosity (10.3 sec.). Their amylograms had the starting point viscosity and did not reach maximumviscosity. When native flour and starch were mixed with their modified products at the ratio of 1:2, with or without addition of borax and sodium hydroxide, their amylograms showed already starting point viscosity at low temperature (30 degree C) and maximum viscosity were also low. Their mixtures were also reduced the capillary viscosity. After evaluating the physicochemical properties of modified products, the suitable mixtures for using as corrugated board adhesive was the mixture of extruded flour and 5% borax. |
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ที่มา:การประชุมทางวิชาการของมหาวิทยาลัยเกษตรศาสตร์ ครั้งที่ 48หัวเรื่อง:ผลของความเข้มข้นและชนิดของสารเคลือบพอลิเมอร์ชีวภาพต่อสมบัติของแผ่นกระดาษลูกฟูก |
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