EXTRUDED PLASTICS NETTING

• US 3,744,529 A
• Filed: 04/08/1971
• Issued: 07/10/1973
• Est. Priority Date: 04/09/1970
• Status: Expired due to Term

• Current Assignee: Francisco Gutierrez (Cardedeu Espinosa, Jacinto Fort (Cardedeu Farre, Jose Mas (Cardedeu Jorda
• Original Assignee: Francisco Gutierrez (Cardedeu Espinosa, Jacinto Fort (Cardedeu Farre, Jose Mas (Cardedeu Jorda
• Inventors: Jorda, Jose Mas (Cardedeu, Farre, Jacinto Fort (Cardedeu, Espinosa, Francisco Gutierrez (Cardedeu
• Primary Examiner(s): Ansher, Harold
• Application Number:
  US05/132,432
• Time in Patent Office: 824 Days
• Field of Search: 161/70,57,143,DIG.6,109,89,58 156/167,180,175 264/DIG.8,176,210,176F,177F,21F 138/125,130,144
• US Class Current: 138/125
• CPC Class Codes: B29C 48/05 Filamentary, e.g. strands
• CPC Class Codes: B29C 48/10 flexible, e.g. blown foils
• CPC Class Codes: B29C 48/11 comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
• CPC Class Codes: B29C 48/12 Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
• CPC Class Codes: B29C 48/13 Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
• CPC Class Codes: B29C 48/30 Extrusion nozzles or dies extrusion characterised by the shape or cross-section of the extruded article B29C48/03
• CPC Class Codes: B29C 48/33 with parts rotatable relative to each other
• CPC Class Codes: B29C 48/337 the components merging at a common location
• CPC Class Codes: B29L 2028/00 Nets or the like
• CPC Class Codes: Y10T 428/24074 Strand or strand-portions

Abstract

An extruded orientated tubular plastic mesh or net for packaging purposes comprising an inner set or layer of spaced parallel orientated strands extending in a helix around the tube, an outer set or layer of similarly spaced parallel orientated strands extending in an equal angle but opposite helix around the tube, the inner and outer sets or layers of strands being unconnected at their crossing points and a third set or layer of spaced strands, more orientated and attenuated than the helical strands, interconnecting the inner and outer sets or layers of helical strands along lines of connection points parallel to the tube axis, each strand of the third set or layer having alternate connection along its length with the outer sides of the strands of the inner set and the inner set of the strands of the outer set, each third set strand extending from connection point to adjacent connection point along a looped untensioned path.

Claims

1. An extruded orientated tubular plastic mesh or net for packaging purposes comprising an inner set or layer of spaced parallel orientated strands extending in a helix around the tube, an outer set or layer of similarly spaced parallel orientated strands extending in an equal angle but opposite helix around the tube, the inner and outer sets or layers of strands being unconnected at their crossing points and a third set or layer of spaced strands, more orientated and attenuated than the helical strands, interconnecting the inner and outer sets or layers of helical strands along lines of connection points parallel to the tube axis, each strand of the third set of layer having alternate connection along its length with the outer sides of the strands of the inner set and the inner sides of the strands of the outer set, each third set strand extending from connection point to adjacent connection point along a looped untensioned path.

2. The extruded orientated tubular plastic mesh or net as claimed in claim 1 in which the junctions of the third set of strands with the strands of the inner and outer sets are positioned substantially midway between adjacent crossing points of the inner and outer sets of strands.