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| ORE7203 | Problems in Plywood Production Line | 3+0+0 | ECTS:7.5 | | Year / Semester | Spring Semester | | Level of Course | Third Cycle | | Status | Elective | | Department | DEPARTMENT of FOREST INDUSTRY ENGINEERING | | Prerequisites and co-requisites | None | | Mode of Delivery | | | Contact Hours | 14 weeks - 3 hours of lectures per week | | Lecturer | Prof. Dr. Semra ÇOLAK | | Co-Lecturer | None | | Language of instruction | Turkish | | Professional practise ( internship ) | None | | | | The aim of the course: | | The course aim to determine the probable problems in plywood production line and to propose solutions for these problems. |
| Programme Outcomes | CTPO | TOA | | Upon successful completion of the course, the students will be able to : | | | | PO - 1 : | define and explain probable problems in plywood production line | 2,3,5 | 1, | | PO - 2 : | determine the problems arise from wood steaming | 2,3,5 | 1, | | PO - 3 : | analyze the flow diagram of manufacturing plywood | 2,3,5 | 1,3, | | PO - 4 : | apply different production condition to determine their effects on the panel quality. | 2,3,5 | 4, | | PO - 5 : | interpret and pinpoint the probable problems in plywood production line | 2,3,5 | 6, | | CTPO : Contribution to programme outcomes, TOA :Type of assessment (1: written exam, 2: Oral exam, 3: Homework assignment, 4: Laboratory exercise/exam, 5: Seminar / presentation, 6: Term paper), PO : Learning Outcome | | |
| Log defects and their effects on the plywood production. Problems from log heating and steaming. Veneer peeling defects. Matters taken into consideration during the veneer drying, gluing, and pressing. The reasons of delamination after pressing. Storage, storage defects and precautions. |
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| Course Syllabus | | Week | Subject | Related Notes / Files | | Week 1 | A general view to recent trends in plywood production sector, Financial position of the ındustry, problems of rawmaterials, manufacture, infrastructural, and marketing. | | | Week 2 | Raw material problems, Log storage yards, storage conditions and problems orginated from storage and solution suggestions | | | Week 3 | Log heating and steaming, steaming yards and problems appear during to steaming, relations among the log diameter, density and heating time, temperature and these efeccets on the veneer quality | | | Week 4 | Determination of true center of the logs so as to maximize the yield, charging systems, yield maximization problems, determination of students homework subjects | | | Week 5 | Veneer cutting equipment, peeling lathe, knife,pressure bar, bolts, and back up rolls systems, undesirable movement of wood and machine parts and these effects on veneer production, heat distorsion of lathe and related problems to this. | | | Week 6 | Knife and pressure bar setting on peeling lathe, relation fixed setting and veneer quality | | | Week 7 | Veneer defects orginated from peeling lathe setting; Surface roughness,furry or wooly veneeer, bucled veneer,raised or lifted grain, torn grain, knife markes thickness variation, veneer cracks | | | Week 8 | Dryers and veneer drying, veneer and dryer properties affecting veneer quality after drying, control of final moisture content, splits, gluability properties, color and dimentional shrinkage in dried veneers, undesirable situations and solution techniques, emission problems from drying | | | Week 9 | Mid-term exam | | | Week 10 | Veneer gluing, problems related to preparation of glu mixture and gluing machines, machine cleaning, gluing and workers health problems | | | Week 11 | Pressing, problems run into pressing, plywood defects appear after pressing (delamination), press conditions and effects of workers healt | | | Week 12 | Review the former courses | | | Week 13 | Sanding, sanding defects and reasons, wood dust emissions and effects on workers healt, plywood storage and problem in storage | | | Week 14 | Product standardization, unstandardized products, problems run into standardization | | | Week 15 | Product standardization, unstandardized products, problems run into standardization | | | Week 16 | End-of-term exam | | | |
| 1 | Baldwin, R. F. 1995; Plywood And Veneer Based Products : Manufacturing Practices, Miller Freeman Inc., California 94107, USA. | | | 2 | Baldwin, R.F. 1981; Plywood Manufacturing Practices, Revised 2 nd Edition, Miller and Freeman Inc. USA. | | | 3 | Sen, B.K. 1995; Problems and Prospects of Plywood Industry, Mıttal Publications, New Delhi, India | | | |
| 1 | Lutz, J.F. 1977; Wood veneer; Log selection, Cutting and Drying, U.S. Dep. Agric., Tech. Bull. No:1575, Madison, 1977. | | | 2 | Feihl, O., Godin, V. 1970; Peeling defect in veneer their causes and control, Department of Fisheries and Forestry Canadian Forestry Service Publication No.1280 | | | |
| Method of Assessment | | Type of assessment | Week No | Date | Duration (hours) | Weight (%) | | Mid-term exam | 9 | | 1,5 | 30 | | Presentation | 12 | | 1 | 20 | | End-of-term exam | 16 | | 1,5 | 50 | | |
| Student Work Load and its Distribution | | Type of work | Duration (hours pw) | No of weeks / Number of activity | Hours in total per term | | Yüz yüze eğitim | 3 | 14 | 42 | | Sınıf dışı çalışma | 3 | 14 | 42 | | Laboratuar çalışması | 1 | 7 | 7 | | Arasınav için hazırlık | 3 | 8 | 24 | | Arasınav | 1.5 | 1 | 1.5 | | Uygulama | 0 | 0 | 0 | | Klinik Uygulama | 0 | 0 | 0 | | Ödev | 3 | 12 | 36 | | Proje | 0 | 0 | 0 | | Kısa sınav | 0 | 0 | 0 | | Dönem sonu sınavı için hazırlık | 5 | 5 | 25 | | Dönem sonu sınavı | 1.5 | 1 | 1.5 | | Diğer 1 | 0 | 0 | 0 | | Diğer 2 | 0 | 0 | 0 | | Total work load | | | 179 |
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