Expandable knitted net
View Patent ↗The present invention is directed to a knitted net, and more specifically to an expandable knitted net. In one form, the net comprises a plurality of fill yarns with an elastomeric performance, which allows the net to expand in the cross-direction. In another form, the present invention is directed to a netting, and more specifically to a knitted netting comprising a plurality of chain yarns with dissimilar elongation performance oriented in a first direction, and a plurality of fill yarns oriented in a second direction, wherein the yarns oriented in the second direction secure the yarns oriented in the first direction in position within the netting.
1. A method of making a knitted net with an elastomeric performance in the cross-direction comprising the steps of:
providing chain yarns orientated in a first direction;
providing fill yarns orientated in a second direction, wherein said fill yarns comprise a first elastomeric performance;
providing fill yarns orientated in a second direction, wherein said fill yarns comprise a second elastomeric performance;
arranging said fill yarns comprising a first elastomeric performance into a first zone;
arranging said fill yarns comprising a second elastomeric performance into a second zone; and
interconnecting said chain yarns and said fill yarns on a Raschel machine forming a netting, wherein said netting exhibits differential expansion in the cross-direction.
2. A method of making a knitted net with an elastomeric performance in the cross-direction as in claim 1 , wherein said net is comprised of at least thee zones.
3. A method of making a knitted net with differential elongation comprising the steps of:
providing at least three chain yarns of a first elongation performance orientated in a first direction;
providing at least three chain yarns of a second elongation performance orientated in said first direction;
providing fill yarns orientated in a second direction;
arranging said chain yarns of a said first elongation performance into two zones, wherein said zones are located proximal to the outer edges;
arranging said chain yarns of a said second elongation performance into a zone, wherein said zone is located distal to the outer edges; and
interconnecting said chain yarns and said fill yarns on a Raschel machine forming a netting, wherein said netting exhibits differential elongation.
4. A method of making a knitted net with differential elongation as in claim 3 , wherein said yarns are selected from the group consisting of polyamides, polyesters, polyolefins, polyvinyls, polyacrylics, and the combinations thereof.
5. A method of making a knitted net with differential elongation as in claim 4 , wherein said yarns are polymeric tapes, filaments, or a combination thereof.
6. A method of making a knitted net with differential elongation as in claim 3 , wherein said net is comprised of at least three zones.
7. A method of making a knitted net with differential elongation as in claim 6 , wherein said zone comprises at least three chain yarns.
8. A method of making a knitted net with differential elongation as in claim 7 , wherein said chain yarns are similar.
9. A method of making a knitted net with differential elongation as in claim 7 , wherein said chain yarns are dissimilar.
10. A method of making a knitted net with differential elongation as in claim 3 , wherein said net comprises a post-treatment.