USES OF ALTERNATIVE EXTENDERS FOR PLYWOOD MANUFACTURING

Authors

  • Setsuo Iwakiri UFSM
  • Alexsandro B. Cunha
  • Carlos Eduardo C. Alburquerque
  • Elianice Gorniak
  • Lourival Marin Mendes

DOI:

https://doi.org/10.5902/19805098396

Keywords:

Extender, urea-formaldheyde resin, plywood, Eucalyptus cloeziana.

Abstract

This research was developed aiming to evaluate the potentiality of  soy bean, rice flour, maize flour, oatmeal and manioc flour, as alternative extenders to wheatmeal for plywood manufaturing. Twenty one boards were produced  using  Eucalyptus cloeziana venner, being three boards per treatment according to the following formulation in parts per wheight: urea-formaldheyde resin – 100, extender – 75, water – 80 and catalyst – 7. The average values of shear bonding tests (dry and wet), showed that the ricemeal and oatmeal could be used as an alternative extender to the wheatmeal.

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References

ALBA QUÍMICA. Boletim técnico: Ref: 15-09. 1990.

AMERICAN SOCIETY FOR TESTING AND MATERIALS. Testing venner, plywood and other glued veneer constructions. Philladelphia, 1982. (Annual Book of ASTM Standards, ASTM D-805)

BALDWIN, R.F. Plywood manufacturing practices. San Francisco: Miller Freeman, 1995. 388p.

COMMERCIAL STANDARD C.S. 35-61. Hardwood plywood. 1968.

MARRA, A. A. Technology of wood bonding: principles in practice. New York: Van Nostrand Reinhold, 1992. 453p.

MOREIRA, W.S. Extensores alternativos para produção de compensados com resina uréia-formaldeído. Curitiba: UFPR, 1985. 81p. Dissertação (Mestrado) – Universidade Federal do Paraná, 1985.

PIO, N.S. Avaliação da madeira de Eucalyptus scabra (Dum-Cours) e Eucalyptus robusta (Smith) na produção de painéis compensados. Curitiba: UFPR, 1996. 101p. Dissertação (Mestrado) – Universidade Federal do Paraná, 1996.

SELLERS JR., T. Plywood and adhesive technology. New York: Marcel Dekker, 1985. 661p.

U.S. PRODUCT STANDARD PS 1-74 – For Constructions & industrial plywood with typical APA grade-trade marks, Product Standards Section, National Bureau of Standard, 1974. 33p.

Published

2000-03-30

How to Cite

Iwakiri, S., Cunha, A. B., Alburquerque, C. E. C., Gorniak, E., & Mendes, L. M. (2000). USES OF ALTERNATIVE EXTENDERS FOR PLYWOOD MANUFACTURING. Ciência Florestal, 10(1), 77–83. https://doi.org/10.5902/19805098396

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