Wood panels are engineered and produced using wood adhesives.The major adhesive resins used for wood-composite panels contain phenol or urea, plus formaldehyde. There is an urgent need to research and develop next generation, green and sustainable biomass based adhesives due to various environment and energy reserve issues. Soy proteins have been developed as a substitute. However, the water resistant properties are not comparable with current adhesives and further modification will add costs. Cambond has developed a Biomass Crosslinking and Blocking Technology (BCB Technology) to use biomass such as Algae and bioethanol byproducts as the main ingredients to produce bio-adheisves which have the following advantages:
1. Sufficient resources – Algae are fast regrowing resources – algae split every 9 to 12 hours, 3 times the quantity of the biomass (300%) can be harvested after 24 hours. 365 days a year ; Bioethanol byproducts such as DDGS have been used as animal feedstock and millions of tons have been produced every year in UK alone.
2.Sustainable and low carbon: a substantially higher oil production as comparable land plants (soya, rapeseed, oil palm, maize, etc.), no waste biomass (e.g. root, stems) and no competition with agricultural crop-growing areas; the oxygen generator, whilst CO2 is required at the same time for growth. 3-4 tons of CO2 are absorbed per ton of algae mass.
3.Natural protein sources with high output comparing to soybean (15-270t/y ha vs 1.8-2.5t/y ha).
BCB adhesives include Alglue© and Diglue©. Alglue© is an adhesive derived from algae and Diglue© is derived from DDGS (distillers dried grains with solubles). Both feedstocks are available in industrial quantities at attractive prices. The production process is proprietary, simple, sustainable, scalable and non-toxic. These adhesives are being developed as a cost-effective alternative to formaldehyde/phenol based glues and as a competitor to ‘green’ alternatives such as soy based glues or MDI. BCB adhesives can be used to make various wood panels such as Plywood and Fibreboard.