Antistatic films and methods to manufacture the same
View Patent ↗In embodiments herein, the invention relates to a multilayer printable polymeric film including: (a) at least one layer A including one or more polyolefins and having a first side and a second side; (b) a layer B including one or more polyolefins and having a first side and a second side, where the first side of layer B is located on the second side of layer A; and (c) a printable coating located on the first side of layer A; wherein at least one of layer A or B comprises 0.01 to 50.0 wt. % of at least one polyether-polyolefin block copolymer, based on the weight of the polymers comprising the layer; and wherein the multilayer printable polymeric film has a kinetic coefficient of friction less than 0.65; and a surface tension of greater than about 35 mN/m; on one or both sides of the film.
1. A multilayer printable polymeric film comprising:
(a) at least one layer A, comprising one or more polyolefins, having a first side and a second side;
(b) a layer B, comprising one or more polyolefins, having a first side and a second side, where the first side of B is located on the second side of the at least one layer A,
(c) a printable coating located on the first side of the at least one layer A; and
(d) an inner skin layer located adjacent to the second side of the layer B;
wherein at least one layer of the at least one layer A or the layer B comprises 5.0 to 50 wt. % of at least one polyether-polyolefin block copolymer, based a weight of polymers comprising the at least one layer, and a remaining wt. % of the polymers in the at least one layer are propylene-based polymers;
wherein the polyether-polyolefin block copolymer is a non-migratory antistatic agent; and
wherein the multilayer printable polymeric film has a kinetic coefficient of friction less than about 0.65 and a surface tension of greater than about 35 mN/m on at least one side of the multilayer printable polymeric film.
2. The multilayer printable polymeric film of claim 1 , having a surface resistivity in a range of from about 10 6 to about 10 12 ohms/square, measured at 47% RH and 21.5° C.
3. The multilayer printable polymeric film of claim 1 , wherein the at least one layer A and/or the layer B is propylene-based.
4. The multilayer printable polymeric film of claim 1 , further comprising an adhesive primer.
5. The multilayer printable polymeric film of claim 1 , wherein the film is printed.
6. The multilayer printable polymeric film of claim 1 , wherein a whiteness of the multilayer printable polymeric film is greater than 70%.
7. A printable article comprising a multilayer polymeric film having:
(a) at least one layer A, comprising one or more polyolefins, having a first side and a second side, and also comprising from 5.0 to 50 wt. % of at least one polyether-polyolefin block copolymer, based on a weight of polymers comprising the at least one layer A, and a remaining wt. % of the polymers in the at least one layer A are propylene-based polymers, wherein the polyether-polyolefin block copolymer is a non-migratory antistatic agent;
(b) a layer B, comprising one or more polypropylene homopolymers, having a first side and a second side, where the first side of layer B is located on the second side of the at least one layer A;
(c) a printable coating located on the first side of the at least one layer A; and
(d) an inner skin layer located adjacent to the second side of layer B comprising an ethylene-propylene copolymer or ethylene-propylene-butene terpolymer;
wherein the multilayer polymeric film has a kinetic coefficient of friction less than 0.65 and a surface tension of greater than about 35 mN/m on at least one side of the multilayer polymeric film.
8. The printable article of claim 7 , wherein the printable coating is printed.
9. The printable article of claim 7 , wherein the article is a label.
10. The printable article of claim 7 , wherein there is at least one tie-layer between the at least one layer A and the layer B.
11. The printable article of claim 10 , wherein the at least one tie-layer comprises polypropylene homopolymer.
12. The printable article of claim 7 , wherein the layer B also comprises at least one cavitating agent.
13. The printable article of claim 10 , wherein the at least one tie-layer also comprises at least one pigment.
14. The printable article of claim 10 , wherein the at least one layer A comprises from 5.0 to 35 wt. % of the at least one polyether-polyolefin block copolymer.
15. The printable article of claim 1 , wherein the at least one layer A comprises from 5.0 to 35 wt. % of at least one polyether-polyolefin block copolymer.