Furnish characteristic and its relation with the quality of multi-ply board | |
| Author | Jarusak Somsiri |
| Call Number | AIT RSPR no. PP-03-05 |
| Subject(s) | Pulping Fibers--Separation |
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Science. |
| Publisher | Asian Institute of Technology |
| Abstract | Objective of this research study is to highlight pulp fractionation techniques in order to improve strength and print quality of OCC pulp. OCC pulp was collected directly from the local mill and was then fractionated into long and short fiber fractions using laboratory pressure screen with slotted screen basket. Fiber length of each fraction, freeness and fine content were measured using Kajaani (FS-200) fiber analyzer, the Canadian Standard Freeness (CSF) tester and Bauer McNett Classifier respectively. Reject fractions (long fiber) were refined at different CSF level by using PFI laboratory refiner. Refined reject fractions were used as base ply and accept fractions (short fiber) as top ply to make twolayered sheets. Each layer was adhered by using starch spray. Also the consistency of standard handsheet former was increased from 0.017% to 0.4% to explore the flocculation effect on strength properties. Handsheets were tested to evaluate the fractionation and refining effect. Results were compared with strength properties and print quality. It was observed that the strength prope1ties and smoothness of two layered sheet were clearly improved by increased refining of long fiber fraction, except tear strength properties. Using starch as binder for two-layered sheet, only positive improvement could be seen in Scott Bond. Over all strength properties and smoothness were reduced when using high consistency handsheet former. |
| Year | 2003 |
| Type | Research Study Project Report (RSPR) |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Pulp and Paper Technology (PP) |
| Chairperson(s) | Viljakainen, Esa |
| Examination Committee(s) | Nazhad, Mousa M.;Malinen, Raimo |
| Scholarship Donor(s) | Government of Finland I RTG Fellowship |
| Degree | Research Studies Project Report (M.Eng.) - Asian Institute of Technology, 2003 |