会议名称：2023世界木材日研讨会暨第五届国际林联（IUFRO）林产品文化研究组讨论会
会议时间：2023年3月22日

报告嘉宾：Julius T. Pelegrina
嘉宾简介：菲律宾科学与技术部林产品研究与发展研究所 科研分析员

摘要：

Botanically known as Broussonetia papyrifera L’ Herit ex Vent, paper mulberry was introduced in the Philippines in 1935 specifically, in the College of Forestry and Natural Resources, Los Banos, Laguna. Due to its invasive characteristics, Lapnis, its local name, is now considered “pest” as it uncontrollably invades disturbed and abandoned lands. To address the problem, the basic characteristics and properties of paper mulberry were identified to establish its potential uses in furniture making, handmade paper production and charcoal/briquette production.

Based on the physico-mechanical properties, paper mulberry falls under Class V (low strength group) and is suitable for pulp and paper, toys, match sticks, popsicle sticks, wooden boxes, and etc. where strength, hardness, and durability are not critical requirement. Using the FPRDI horizontal bandmill (Wood-Mizer LT28), lumbers were produced and lumber recovery where calculated. Its wood is easy to saw with lumber recovery of 48.82% and 32.76% for live-sawing and sawing-around method, respectively. Using FPRDI’s portable solar-powered dryer with auxiliary biomass heater, paper mulberry was found out to be easy to dry as after 10 days, 50mm thick lumber attained 12% final moisture content (MC) from the initial MC of 54.93%. Prototype sample products like lectern and ottoman chair were fabricated.

For the handmade paper production, fifteen (15) sheets of 26’ x 26’ handmade papers can be produced from one (1) kilogram of pulp bast fibers. And for the charcoaling experiment, the proximate chemical analysis showed that paper mulberry charcoal has 5.81% ash content, heating value of 5,291.87 cal/g, 9.64% volatile combustible matter and fixed carbon amounting to 84.545%。

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