TECHNIQUE FOR PRODCUTION OF PAPERBOARD BRIQUETTE FROM WASTEPAPER
Keywords:
Wastepaper, paperboard briquette, paper pulp, hydraulic compressionAbstract
The goal of this research was to study techniques for producing paperboard briquette from A4- wastepaper using no binder with 50-kN of mechanical compression. The steps of this process were classified into 3 stages: (1) a shredding process using A4-wastepaper as raw material, (2) a paper pulp produced from shredded wastepaper by mixing the shredded wastepaper with tap water, and (3) a molding process for producing the wet paperboard briquette from the paper pulp. The proximate composition and selected physical properties of the wastepaper, paper pulp, and paperboard briquette products were measured according to ASTM Standard Methods. These properties included density and tensile stress of the paperboard briquette products according to ASTM Standard Methods. Various soaking times (1, 3, 6, 12, and 24 h) and molding periods (1, 3, and 6 h) were studied to find the optimal conditions for production of the paperboard briquette. The study investigated paperboard briquette production from A4-wastepaper with 2.2 MPa hydraulic compression using no binder in the raw material. It was found that the optimal conditions for producing the paperboard briquette were 3 h of soaking time in the paper pulp process followed by a molding period of 1 h. The resulting products had 7.42% (wt/wt) moisture content on a wet basis, 15.77% (wt/wt) dry matter, 443.95 g/L density, and 1.93 MPa tensile stress at the point of failure.
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