HEAT SEALABLE COATED NYLON
A heat sealable coated nylon film comprising a layer having a first and a second surface, the layer consisting essentially of nylon, and a coating on the first surface of said layer, wherein the coating is water-based and adapted for making the coated nylon film heat sealable and wherein the coating comprises a polyurethane and a polymer selected from the group consisting of polyolefin, EVA, EAA, ethylene methacrylic copolymer, and a combination thereof. A processes of forming said coated nylon film, a packaged product comprising a product and said heat sealable coated nylon film in which the product is wrapped, and a process of packaging said product.
1 . A heat sealable coated nylon film comprising: a layer having a first and a second surface, the layer consisting essentially of nylon; and a coating on the first surface of said layer, wherein the coating is water-based and adapted for making the coated nylon film heat sealable and wherein the coating comprises a polyurethane and a polymer selected from the group consisting of polyolefin, EVA, EAA, ethylene methacrylic acid copolymer, and a combination thereof.
2 . The heat sealable coated nylon film of claim 1 , wherein the polyurethane and the polymer are present in the coating at a dry weight ratio of between 90:10 and 10:90.
3 . The heat sealable coated nylon film of claim 2 , wherein the coating has a dry weight of between 0.09 g/m 2 and 1.6 g/m 2 .
4 . The heat sealable coated nylon film of claim 3 , wherein the layer consists essentially of biaxially oriented nylon 6.
5 . The heat sealable coated nylon film of claim 4 having a moisture vapor transmission rate of between 2 grams per 0.0645 m 2 per day and 36 grams per 0.0645 m 2 per day, a thickness of between 13 μm and 38 μm, and a heat seal strength of between 300 g/25 mm and 900 g/25 mm.
6 . A process of forming a heat sealable coated nylon film comprising a step of: forming a coating by mixing a polyurethane and a polymer selected from the group consisting of polyolefin, EVA, EAA, ethylene methacrylic acid copolymer, and a combination thereof, and applying the coating to the first surface of a layer having a first and second surface and consisting essentially of nylon; wherein the coating is water-based and adapted for making the coated nylon film heat sealable.
7 . The process of claim 6 , wherein the polyurethane and the polymer are present in the coating at a dry weight ratio of between 90:10 and 10:90.
8 . The process of claim 7 , wherein the coating has a dry weight of between 0.09 g/m 2 and 1.6 g/m 2 .
9 . The process of claim 8 , wherein the layer consists essentially of biaxially oriented nylon 6.
10 . The process of claim 9 , wherein the heat sealable coated nylon film has a moisture vapor transmission rate of between 2 grams per 0.0645 m 2 per day and 36 grams per 0.0645 m 2 per day, a thickness of between 13 μm and 38 μm, and a heat seal strength of between 300 g/25 mm and 900 g/25 mm.
11 . A packaged product comprising: a product and a heat sealable coated nylon film in which the product is wrapped, the heat sealable coated nylon film comprising: a layer having a first and a second surface, the layer consisting essentially of nylon; and a coating on the first surface of said layer, wherein the coating is water-based and adapted for making the coated nylon film heat sealable and wherein the coating comprises a polyurethane and a polymer selected from the group consisting of polyolefin, EVA, EAA, ethylene methacrylic acid copolymer, and a combination thereof.
12 . The packaged product of claim 11 , wherein the polyurethane and the polymer are present in the coating at a dry weight ratio of between 90:10 and 10:90.
13 . The package product of claim 12 , wherein the coating has a dry weight of between 0.09 g/m 2 and 1.6 g/m 2 .
14 . The packaged product of claim 13 , wherein the layer consists essentially of biaxially oriented nylon 6.
15 . The packaged product of claim 14 , wherein the heat sealable coated nylon film has a moisture vapor transmission rate of between 2 grams per 0.0645 m 2 per day and 36 grams per 0.0645 m 2 per day, a thickness of between 13 μm and 38 μm, and a heat seal strength of between 300 g/25 mm and 900 g/25 mm.
16 . A process of packaging a product comprising a step of wrapping the product in a heat sealable coated nylon film, the heat sealable coated nylon film comprising: a layer having a first and a second surface, the layer consisting essentially of nylon; and a coating on the first surface of said layer, wherein the coating is water-based and adapted for making the coated nylon film heat sealable and wherein the coating comprises a polyurethane and a polymer selected from the group consisting of polyolefin, EVA, EAA, ethylene methacrylic acid copolymer, and a combination thereof.