Manufacture and performance of new structural shet material LVB made from small sized veneers

小规格单板新型结构板材LVB的制备及性能

• 批准号: 61560182
• 负责人: OKUMA Motoaki
• 金额: $ 1.28万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61560182/
• 关键词: Plywood; Domestic grown plantation tree; Thinnings; Veneer construction; 単板構成; LVL; 国産材; ヒノキ; スギ; ラワン合板; 縦つぎ

In Japan, it is required to produce some new structural sheet materials from low grade components of the domestic plantation timbers. LVB (laminated veneer board) which is composed of small sized veneers such as 45-90cm both in length and width has been considered as one of the substitutes for lauan plywood.The strength properties of HINOKI (Japanese cypress) and SUGI (Cryptomeria) LVB were investigated. Tests results are summarized as follows;1 The MOE of LVB is almost the same as that of lauan plywood.2 There is no effecto of the end joints of the veneers on the MOE of the products.3 Both the MOE and the MOR of HINOKI LVB are larger than those of SUGI LVB.4 HINOKI LVB 13.7mm thick is not at all inferior to 12.5mm lauan plywood, and is for better than 15mm particleboard in bending performance under a concentrated load.It is possible to fully automate the processing line by fitting it with robots for arranging the small veneers.Generally, LVB can be manufactured from the domestic grown soft-woods efficiently and was found to have sufficient strength.

在日本，要求用国产种植园木材的低等级构件生产一些新型结构板材。LVB（laminated veneer board）是由长宽均为45- 90 cm的小规格单板组成的胶合板，被认为是柳胶合板的替代品之一。试验结果总结如下：1胶合板的抗弯弹性模量（莫伊）与柳胶胶合板的抗弯弹性模量（MOE）基本相同。2单板端接对胶合板的抗弯弹性模量（MoE）没有影响。3 HINOKI胶合板的抗弯弹性模量（莫伊）和抗弯强度（莫尔）均大于SUGI胶合板。4 HINOKI胶合板13.7mm厚的抗弯弹性模量（MOE）与12.5mm厚的柳胶胶合板的抗弯弹性模量（MOR）相差不大。在集中载荷下的弯曲性能优于15 mm刨花板。通过配备机器人来排列小单板，可以实现生产线的完全自动化。通常，LVB可以有效地从国内生长的软木中生产，并且被发现具有足够的强度。

项目成果

李銓斉,大熊幹章: 木材学会誌. 33. (1987)

李建奇，大隈干章：《木材科学学会杂志》33。（1987）

大熊幹章: 木材工業. 41. 4-8 (1986)

大隈干明：木材工业。41. 4-8 (1986)

中村昇,大熊幹章: 木材学会誌. 32. 685-690 (1986)

Noboru Nakamura，Mikiaki Okuma：日本木材科学学会杂志 32. 685-690 (1986)。