The study assessed the peeling potential of rubber trees past the prime latex-producing age when the latex yields become non-economical. Fifteen 25-year-old plantation-grown trees were harvested and peeled using spindleless lathe technology. Following peeling, veneer sheets were measured and graded to determine volume and quality recoveries. Relationships between billet characteristics and recoveries or quality were examined and a recovery predictive model proposed. Most of the main causes identified for downgrading face veneers were either processing-related issues or drying-induced defects. Thus, a combination of several optimisation techniques could annihilate most of the main causes of downgrading veneer, potentially leading to a substantial proportion of higher-quality veneers typically used where surface decorative appearance is a primary consideration. The results demonstrated that rubber trees past their latex-producing prime from unthinned and unpruned stands have qualities and desirable traits to potentially produce certain high-value engineered wood products. Senile rubber trees in Laos could represent significant additional revenue to growers and a source of raw material to the industry which, theoretically, could be converted into high-value products if other factors can be overcome.

这项研究评估了当乳胶产量变得不经济时，超过主要乳胶生产年龄的橡胶树的剥离潜力。使用无主轴车床技术，收获了15棵25岁的人工林生长树木。剥离后，对单板进行测量并分级，以确定体积和质量回收率。研究了方坯特性与回收率或质量之间的关系，并提出了回收预测模型。确定降低饰面饰面等级的大多数主要原因是与加工相关的问题或干燥引起的缺陷。因此，几种优化技术的结合可以消除导致单板降级的大部分主要原因，可能会导致通常在表面装饰外观是主要考虑因素时使用的大量高质量单板。结果表明，未经稀释和未修剪的林分越过其乳胶生产主要成分的橡胶树具有可生产某些高价值工程木制品的品质和理想特性。老挝的老龄橡胶树可能为种植者带来可观的额外收入，并为该行业提供原材料，从理论上讲，如果可以克服其他因素，这种橡胶树可以转化为高价值产品。