| 摘要 |
light industry. SUBSTANCE: according to first version, button has head part with at least two fastening holes provided with festoons attached at both sides of button. According to second version, button has head part and fastener including omega-shaped loop member. Fastener is provided with metal plate of size equal to or less than that of button. Metal plate is positioned between birch bark layers, and omega-shaped member is extending through birch bark layer. In both versions head part is made of at least two birch bark layers connected with their outer surfaces. EFFECT: simplified construction, reduced labor consumption, increased efficiency in using wood-processing industry wastes and, as a result, decreased production costs. 18 cl, 16 dwg
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