FIELD: light industry. SUBSTANCE: lengths of material are fed continuously in direction of treatment along production line and strips of adhesive are applied to them. Middle length is cut into strips which are glued with their opposite edges to external lengths. Cellular structure is obtained by selection of transparent or porous material for external lengths and lightproof material for middle length. EFFECT: efficient control of light or air supply. 18 cl, 7 dwg
Authors
Dates
1998-07-20—Published
1991-09-05—Filed