尿醛胶是人造板工业中用量最大的合成树脂胶合剂。为了节约原料和降低成本,许多国家常常在尿醛胶中加入大量面粉或豆粉作增量剂。其用量达每吨胶料200公斤或更多。我国也有部分人造板厂用豆粉作增量剂,是不符合毛主席“广积粮”的伟大战略方针的。因此有必要另外寻找一种适宜的材料来代替面粉、豆粉等作增量剂。我们发动群众进行了用荆树皮粉作尿醛胶的增量剂小型试验,取得了较好的效果,增量 Urea-formaldehyde glue is the largest amount of wood-based panel synthetic resin adhesive industry. In order to save raw materials and reduce costs, many countries often add a lot of flour or bean flour to urea-formaldehyde glue as an extender. The amount of up to 200 kg per ton of rubber or more. Some wood-based panel mills in China also use bean flour as an extender, which is inconsistent with the great strategic principle of Chairman Mao’s “extensive grain rationing.” Therefore, it is necessary to find a suitable alternative to flour instead of flour, flour and other extenders. We mobilize the masses carried out with Jing bark powder as a urine aldehyde glue extender small experiment, and achieved good results, incremental