Pleated polymeric sheet having apertures
The present disclosure provides a polymeric plasticized film or sheet having one or more apertures to reduce the amount of material needed, as well as overall weight, per desired volume of material required. The polymeric plasticized film or sheet may also be capable of folding and keeping the crease for a desired amount of time. The polymeric plasticized film or sheet may be biodegradable.
1. A gas filter, comprising:
a pleated netting formed of at least one polymer and a plasticizer, the ratio of polymer to plasticizer ranging from 95:5 to 55:45 by weight;
the pleated netting having one or more diamond shaped apertures for flow of gas therethrough, and further having at least one crease to form a pleat extending across a surface of the pleated netting, and
wherein the pleated netting has a tensile modulus in the range of 1.75 to 1.35 GPa when measured in accordance with ASTM E111-97 method for determining Tensile Modulus.
2. The gas filter of claim 1 , wherein the one or more apertures comprise pores or perforations.
3. The gas filter of claim 1 , further including a plurality of pleats extending across its surface.
4. The gas filter of claim 3 , wherein the pleats are uniformly spaced across the surface of the netting.
5. The gas filter of claim 3 , wherein the pleats are non-uniformly spaced across the surface of the netting.
6. The gas filter of claim 1 , wherein the at least one polymer is a biopolymer.
7. The gas filter of claim 1 , wherein the at least one polymer is a biodegradable polymer.
8. The gas filter of claim 1 , wherein the at least one polymer is selected from the group consisting of polymers from biomass, polymers obtained by microbial production, polymers chemically synthesized using monomers obtained from agro-resources, bio-polymers whose monomers and polymers are both obtained by chemical synthesis from fossil resources, polylactic acid (PLA), poly(hydroxyalkanoates) (PHAs), polybutylene adipate terephthalate (PBAT), polybutylene succinate (Bio-PBS), polyvinyl alcohol (PVOH), ethylene vinyl alcohol (EVOH), and polycaprolactone (PCL).
9. The gas filter of claim 1 , wherein the plasticizer material is a biopolymer.
10. The gas filter of claim 1 , wherein the plasticizer material is selected from the group consisting of polymers from biomass, polymers obtained by microbial production, polymers chemically synthesized using monomers obtained from agro-resources, bio-polymers whose monomers and polymers are both obtained by chemical synthesis from fossil resources, polyethylene glycol (PEG), polybutylene adipate terephthalate (PBAT), polybutylene succinate (Bio-PBS), polycaprolactone (PCL), and triacetin.
11. The gas filter of claim 1 , wherein the ratio of polymer to plasticizer material is in the range of 90:10 to 60:40 by weight.
12. The gas filter of claim 1 , wherein the pleated netting further has a thickness in the range of 25 μm to 1.016 μm.
13. A method of manufacturing the gas filter of claim 1 , comprising:
providing at least one polymer, the polymer being biodegradable;
providing a plasticizer, the plasticizer being biodegradable;
forming a netting of polymeric plasticized material from the at least one polymer and plasticizer, the ratio of polymer to plasticizer ranging from 95:5 to 55:45 by weight;
providing the netting with one or more diamond shaped apertures; and
forming at least one pleat across a surface of the netting by cold pleating the netting without the addition of heat.
14. The method of claim 13 , wherein the at least one polymer is selected from the group consisting of polymers from biomass, polymers obtained by microbial production, polymers chemically synthesized using monomers obtained from agro-resources, bio-polymers whose monomers and polymers are both obtained by chemical synthesis from fossil resources, polylactic acid (PLA), poly(hydroxyalkanoates) (PHAs), polybutylene adipate terephthalate (PBAT), polybutylene succinate (Bio-PBS), polyvinyl alcohol (PVOH), ethylene vinyl alcohol (EVOH), and polycaprolactone (PCL).
15. The method of claim 13 , wherein the plasticizer material is selected from the group consisting of polymers from biomass, polymers obtained by microbial production, polymers chemically synthesized using monomers obtained from agro-resources, bio-polymers whose monomers and polymers are both obtained by chemical synthesis from fossil resources, polyethylene glycol (PEG), polybutylene adipate terephthalate (PBAT), polybutylene succinate (Bio-PBS), polycaprolactone (PCL), and triacetin.
16. The method of claim 13 , wherein the ratio of polymer to plasticizer material is in the range of 90:10 to 60:40 by weight.
17. The method of claim 13 , wherein a plurality of pleats are formed uniformly spaced apart across the surface of the netting.
18. The method of claim 13 , wherein a plurality of pleats are formed non-uniformly spaced apart across the surface of the netting.
19. A pleated polymeric netting, comprising:
at least one polymer and a plasticizer, the pleated polymeric netting having one or more diamond shaped apertures for flow of gas or liquid therethrough, and further having at least one pleat extending across a surface of the pleated polymeric netting;
wherein the pleated polymeric netting has a tensile modulus in the range of 1.75 to 1.35 GPa when measured in accordance with ASTM E111-97 method for determining Tensile Modulus.
20. The netting of claim 19 , wherein the ratio of polymer to plasticizer material ranges from 95:5 to 55:45 by weight.
21. The netting of claim 19 , wherein the ratio of polymer to plasticizer material is in the range of 90:10 to 60:40 by weight.
22. The netting of claim 19 , wherein the one or more apertures comprise pores or perforations.
23. The netting of claim 19 , further including a plurality of pleats extending across its surface.
24. The netting of claim 23 , wherein the pleats are uniformly spaced across the surface of the netting.
25. The netting of claim 23 , wherein the pleats are non-uniformly spaced across the surface of the netting.
26. The netting of claim 19 , wherein the at least one polymer is a biopolymer.
27. The netting of claim 19 , wherein the at least one polymer is a biodegradable polymer.
28. The netting of claim 19 , wherein the at least one polymer is selected from the group consisting of polymers from biomass, polymers obtained by microbial production, polymers chemically synthesized using monomers obtained from agro-resources, bio-polymers whose monomers and polymers are both obtained by chemical synthesis from fossil resources, polylactic acid (PLA), poly(hydroxyalkanoates) (PHAs), polybutylene adipate terephthalate (PBAT), polybutylene succinate (Bio-PBS), polyvinyl alcohol (PVOH), ethylene vinyl alcohol (EVOH), and polycaprolactone (PCL).
29. The netting of claim 19 , wherein the plasticizer material is a biopolymer.
30. The netting of claim 19 , wherein the plasticizer material is selected from the group consisting of polymers from biomass, polymers obtained by microbial production, polymers chemically synthesized using monomers obtained from agro-resources, bio-polymers whose monomers and polymers are both obtained by chemical synthesis from fossil resources, polyethylene glycol (PEG), polybutylene adipate terephthalate (PBAT), polybutylene succinate (Bio-PBS), polycaprolactone (PCL), and triacetin.
31. The netting of claim 19 , further having a thickness in the range of 25 μm to 1.016 μm.
32. The netting of claim 31 , wherein the thickness is in the range of 25 μm to 508 μm.
33. The netting of claim 31 , wherein the thickness is in the range of 38 μm to 127 μm.