PLATE COATED BY METHOD OF CO-EXTRUSION WITH PARTITIONS WITHOUT TRIANGLE EFFECT Russian patent published in 2009 - IPC B29C47/20 

FIELD: technological processes.

SUBSTANCE: invention is related to method for production of wedge-free plates coated by co-extrusion with partitions and to items comprising multi-layer plate with partitions. Method for manufacture of multi-layer plate with partitions includes the main layer and at least one co-extruded layer, by means of co-extrusion, at that from flow of material forming the main layer, separate flow is tapped, which is sent directly into mold for partition and creates partitions. Tapping of separate flow is realised via extrusion head for manufacture of plate with partitions, having one hole. Hole is intended for straight supply of some material that forms the main layer, in mold for partition. Multi-layer plate coated by co-extrusion with partitions has homogeneous co-extruded coating. Invention makes it possible to avoid wedge formation, i.e. effect of triangle.

EFFECT: method is suitable for manufacture of plates with partitions equipped with both single-sided and double-sided coating.

8 cl, 5 dwg