Coconut yields more fruits for construction industry

The coconut tree is again proving its worth as a source not only of medicinal or therapeutic products, such as virgin coconut oil, but also of alternative construction materials, primarily lumber and leaves that can be woven into sturdy roofs and walls.

The Department of Science and Technology, however, has found another breakthrough in the construction industry from the once-lowly coconut—the “coco coir board.” Made entirely of coconut husk, the board is different from your run-of-the-mill paneling boards in the sense that it does not need synthetic chemicals, adhesives or cement as binders.

Aside from this unique aspect, the coco coir board’s production process is environment-friendly, said Dr. Dwight Eusebio, a senior researcher at the Forest Products Research and Development Institute in Los Baños, Laguna.

Although the board is recommended only for indoor paneling, it still entails a strict production process so that its binding property is achieved and maintained, Eusebio said.

“Milling and drying of fibers and hot pressing of the board are the critical processes for the technology. Coconut husks should go through a milling machine, passing a two-millimeter screen, and the fibers must pass through a dryer with a moisture content of between eight percent and 10 percent,” he said.

“Since there are not binders or other chemicals used, the production cost is cheaper, translating to cheaper selling prices. The manufactured sizes are 600 millimeter by 1,200 millimeter, or two feet by four feet, and 900 millimeter by 1,800 millimeter, or three feet by six feet,” Eusebio added.

Eusebio said the technology was also being used in different panel products, like particle boards, plywood, oriented strand boards, and medium-density fiber boards bonded with petroleum-based resins or cement.

“The technology can be transferred through outright sale, royalties, demonstration and piloting, and training. It is ready for diffusion but if commercial production is being planned, specific tests, like termite and fungi resistance of the boards on a long-term basis, should be determined,” he said.

“Also, if the boards are being planned for use as exterior panels or in rooms where humidity is high, exposure tests should be done to determine the durability of coco coir binderless boards. Since most of the equipment for the production of the coco coir board are already available, the transfer of the technology to existing particle board manufacturers is being encouraged,” Eusebio added.

The Philippine Council for Industry and Energy Research and Development, an attached agency of the Department of Science and Technology, is overseeing the project.