Reinforced flexible polymer material strip, method of manufacturing same and three dimensional structure made using same

A method for producing a flexible strip of a polymeric material for production of a three-dimensional cellular structure, wherein the strip comprises reinforcing elements and protrusions located on a surface of the strip, the method comprising the steps of:

• extruding a polymeric material to produce a preform,
• laying the reinforcing elements on a preform surface,
• processing the preform in rolls for forming the protrusions on the preform surface, and
• cutting the preform into strips,
• wherein, when the preform is processed in the rolls in the step of forming the protrusions, the reinforcing elements are additionally embedded into these protrusions at intersections of the protrusions and the reinforcing elements.

A three-dimensional cellular structure being comprised of flexible polymeric strips, the structure comprising:

• reinforcing elements;
• and
• protrusions located on a surface of the strip, the strips being arranged in rows connected therebetween in a staggered order along their length to form a three-dimensional cellular structure when stretched in a direction normal to their surface,
• wherein the reinforcing elements are placed so as to contact the surface of the strip and are embedded in the protrusions located on the surface of the strip at intersections of the protrusions and the reinforcing elements.