Treated film strips
The present invention relates to treated strips or films such that the surfaces of the strips have little or no adhesion to its outer packaging. Specifically, the present invention relates to treated strips providing a strip or film layer comprising a water-insoluble particle coating on at least one surface of the strip or film layer.
1 . A treated film composition comprising:
a.) a film having opposing surfaces, comprising;
i. at least one film forming polymer; and
ii. at least one water insoluble particle coated on at least one opposing surface of the film; and
b.) a package for the film
wherein the coated film surface exhibits substantially no adhesion to the package upon insertion therein.
2 . The treated film according to claim 1 , wherein the film forming polymer is selected from the group consisting of water soluble polymers, water insoluble polymers and mixtures thereof.
3 . The treated film according to claim 2 , wherein the water soluble polymer is selected from the group consisting of pullulan, hydroxypropylmethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, polyvinyl pyrrolidone, carboxymethyl cellulose, polyvinyl alcohol, sodium alginate, polyethylene glycol, xanthan gum, tragacanth gum, guar gum, acacia gum, arabic gum, polyacrylic acid, methylmethacrylate copolymer, carboxyvinyl polymer, amylose, high amylose starch, hydroxypropylated high amylose starch, dextrin, pectin, chitin, chitosan, levan, elsinan, collagen, gelatin, zein, gluten, soy protein isolate, whey protein isolate, casein and mixtures thereof.
4 . The treated film according to claim 3 , wherein the water soluble polymer is a mixture of water soluble polymers.
5 . The treated film according to claim 2 , wherein the water insoluble polymer is selected from the group consisting of hydrogenated vegetable oils; natural rosins such as wood rosins and gum rosins; vegetable proteins such as corn protein, pea protein or soy protein; hydrogenated caster oil; polyvinyl chloride; shellac; polyurethane; cellulose, cellulose derivatives; waxes; methacrylic acid copolymers, silicone or a mixture thereof.
6 . The treated film according to claim 5 , wherein the water insoluble particle is selected from the group consisting of inorganic particles, organic particles or mixtures thereof.
7 . The treated film according to claim 6 , wherein the water insoluble particle is selected is an inorganic particle selected from the group consisting of alumina, talc, magnesium stearate, titanium dioxide, barium titanate, magnesium titanate, calcium titanate, strontium titanate, zinc oxide, silica sand, clay, mica, tabular spar, diatomaceous earth, various inorganic oxide pigments, chromium oxide, cerium oxide, iron red, antimony trioxide, magnesium oxide, zirconium oxide, barium sulfate, barium carbonate, calcium carbonate, silica (colloidal or fumed), silicon carbide, silicon nitride, boron carbide, tungsten carbide, calcium hydroxyl apatite, titanium carbide, carbon black and mixtures thereof.
8 . The treated film according to claim 7 , wherein the water insoluble particle is silica.
9 . The treated film according to claim 6 , wherein the water insoluble particle is selected is an organic particle selected from the group consisting of cross-linked and non-cross-linked polymer powders, organic pigments, charge controlling agents, waxes and mixtures thereof.
10 . A treated film composition comprising:
a.) a film having opposing surfaces, comprising;
i. at least one water insoluble film forming polymer; and
ii. at least one water insoluble particle coated on at least one opposing surface of the film; and
b.) a package for the film
wherein the coated film surface exhibits substantially no adhesion to the package upon insertion therein.
11 . A treated film composition comprising:
a.) a film having opposing surfaces, comprising;
i. at least one water soluble film forming polymer; and
ii. at least one water insoluble particle coated on at least one opposing surface of the film; and
b.) a package for the film
wherein the coated film surface exhibits substantially no adhesion to the package upon insertion therein.
12 . A film composition having at least one surface having a surface area, comprising;
a) at least one film forming polymer; and
b) at least one water insoluble particle coated on at least one surface of the film;
wherein at least about 15% of the surface area of the coated surface of the film is covered by the water insoluble particle.
13 . A method of preventing or reducing the adhesion of a stand alone films or strips to packaging, comprising the steps of:
a.) providing a film or strip having opposing surfaces; and
b.) treating the film or strip by coating at least one of the opposing surfaces with a water insoluble particle.
14 . The method of claim 13 , wherein the treated film or strip is placed in contact with the inner surfaces of a packaging container for the film or strip.