| 摘要 |
FIELD: production of material usable for window curtains. SUBSTANCE: sheets of material are continuously fed for processing according to preset succession of operations, and strips of glue are applied to them, middle sheet is cut into strips which are glued by opposite edges to outside sheets. By selecting transparent or porous material for outer sheets, and light-proof material for middle, sheet it is possible to produce cellular structure to regulate incoming of light or air. EFFECT: high efficiency. |
