Skip to main content
Journal of Wood Science

Official Journal of the Japan Wood Research Society

Download PDF
  • Original Article
  • Published:

Design and pilot production of a “spiral-winder” for the manufacture of cylindrical laminated veneer lumber

Journal of Wood Science volume 47, pages 115–123 (2001)Cite this article

Abstract

A new spiral-winder was developed for continuous manufacturing of cylindrical laminated veneer lumber (LVL), and a suitable resin adhesive for this cylindrical LVL manufacturing system was investigated. This phase was followed by trial manufacturing and evaluation of cylindrical LVL with the optimum resin adhesive identified. The results are summarized as follows. (1) The shortest gelation time was recorded with a mixture of two commercial resorcinol based resins (DF-1000 and D-33) at a weight ratio of 25∶75. (2) Bath temperature had a remarkable effect on the gelation time of the adhesive mix. (3) High bonding strength was recorded by 25∶75 DF-1000/D-33 adhesive mix at a high press temperature despite a short pressing duration. Based on the results of items (1) to (3), 25∶75 DF-1000/ D-33 is recommended for use in the new spiral-winder. (4) The mechanical properties of cylindrical LVL could be improved by using 25∶75 DF-1000/D-33 with wider veneer width and longer pressing time. (5) The mechanical properties, especially the modulus of rupture, of the cylindrical LVL manufactured require further improvement for practical structural application.

References

  1. Gibson LJ, Ashby MF (1987) Cellular solid: structure and properties. Pergamon, Oxford, pp 278–325

    Google Scholar 

  2. Furuno T, Sawabe O (1994) Wood science course. II. Structure and properties of wood. Kaisei-sya, pp 95–98

  3. Rosato DV, Grove CS Jr (1964) Filament winding: its development, manufacture, applications, and design. Interscience, New York, p 14

    Google Scholar 

  4. Japan Wood Processing Technology Association (1992) Basic wood science (in Japanese) Kaisei-sya, p 31

  5. Yamauchi H, Miura I, Hata T, Tamura Y, Kawai S, Sasaki H (1999) Manufacture of cylindrical LVL by spiral-winding method. II. Fast-setting adhesives for cylindrical LVL manufacture (in Japanese). Mokuzai Gakkaishi 45:149–156

    Google Scholar 

  6. Yamauchi H, Shoho S, Sasaki T, Ping Y, Kawai S, Sasaki H (1997) Manufacture of cylindrical LVL by spiral-winding method. I. Effect of interlocked-plies on the tensile Young's modulus (in Japanese). Mokuzai Gakkaishi 43:747–753

    CAS  Google Scholar 

  7. Anonymous (1995) Japan industrial standard: phenolic resin adhesives for wood. JIS K6802 1995. Japan Standards Association 8. Anonymous Japan industrial standard: testing method for tensile shear strength of wood-to-wood adhesive bonds. JIS K6851 1994. Japan Standards Association

  8. Uemura T (1994) Encyclopedia of wood for practical use. Sangyou Chousakai, Tokyo, p 118

  9. Tochigi T, Kawasaki H, Hayashi D (1981) Studies of the construction material using a rotary-peeled veneer: a rolled-veneer column (RVC). I. Patterns of the gluing pressure system in the RVC processing machine (in Japanese). Mokuzai Gakkaishi 27:556–565

    Google Scholar 

  10. Japan Wood Processing Technology Association (1996) Wood adhesion and adhesives (in Japanese). Sanchou-shuppan, pp 33–75

  11. Subiyanto B, Kawai S, Sasaki H, Kahar N, Ishihara S (1988) Studies on curing condition of particleboard adhesive. I. Effect of environmental temperature and adhesive temperature on gelation time (in Japanese). Mokuzai Gakkaishi 34:333–336

    CAS  Google Scholar 

  12. Wangaad FF (1964) Elastic deflection of wood-fiberglass compos- ite beams. For Prod J 14(6):256

    Google Scholar 

  13. Biblis EJ (1965) Analysis of wood-fiberglass composite beams within and beyond the elastic region. For Prod J 15(2):81

    Google Scholar 

  14. Biblis EJ (1969) Flexural rigidity of southern pine plywood. For Prod J 19(6):47

    Google Scholar 

  15. Ebihara T (1981) Shear properties of laminated-veneer lumber (LVL) (in Japanese). Mokuzai Gakkaishi 27:788–794

    Google Scholar 

  16. Hioki K (1970) Structural mechanics. I. (in Japanese). Asakurashoten, p 131

  17. Yamauchi H, Miura I, Sasaki T, Koizumi A, Kawai S, Sasaki H (1998) Manufacturing condition and mechanical properties of cylindrical LVL manufactured by spiral-winding method (in Japanese). Zairyou Gakkaishi 47:350–355

    CAS  Google Scholar 

  18. Bohlen JC (1972) LVL laminated veneer lumber development and economics. For Prod J 22(1):18–26

    Google Scholar 

  19. Laufenberg TL (1983) Parallel-laminated veneer: processing and performance research review. For Prod J 33(9):21–28

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Wood Research Institute, Kyoto University, Gokasho, Uji, 611-0011, Kyoto, Japan

    Toshihiro Hata, Kenji Umemura & Shuichi Kawai

  2. Institute of Wood Technology, Akita Prefectural University, 016-0876, Noshiro, Japan

    Hidefumi Yamauchi & Hikaru Sasaki

  3. Showa Marutsutsu Co., 8-1 Sakura-Cho, Higashi-Osaka, 579-8047, Osaka, Japan

    Akihiro Nakayama

Authors
  1. Toshihiro Hata
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Kenji Umemura
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Hidefumi Yamauchi
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Akihiro Nakayama
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Shuichi Kawai
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Hikaru Sasaki
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Toshihiro Hata.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Hata, T., Umemura, K., Yamauchi, H. et al. Design and pilot production of a “spiral-winder” for the manufacture of cylindrical laminated veneer lumber. J Wood Sci 47, 115–123 (2001). https://doi.org/10.1007/BF00780559

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00780559

Key words