The present invention is directed to a process for producing a non-oriented film with improved oxygen barrier property, and to such a non-oriented film. The non-oriented film comprises a polyolefin composition comprising a propylene homo- or copolymer, a hydrocarbon resin and optionally a nucleating agent. The process involves cooling of the extruded film at a certain cooling temperature which is preferably higher than the cooling temperature of a film which has the same components in the same relative amounts apart from not comprising the hydrocarbon resin. The present invention allows the application of a polypropylene based non-oriented film like a cast film (CPP) for packaging of sensitive food.

An improved method forms and employs a wax to modify throughputs and melt flow in polymers. The method includes: (a) selecting a solid polymeric material, (b) heating the solid polymeric material in an extruder to produce a molten polymeric material, (c) filtering the molten polymeric material, (d) placing the molten polymeric material through a chemical depolymerization process in a reactor to produce a depolymerized polymeric material, and (e) adding the depolymerized material to a pre-wax mixture to produce a modified polymer.

The present invention relates to improvement of blocking resistance when a water-based dispersion containing polylactic acid as a dispersoid is used as a heat sealant. Provided is an aqueous dispersion obtained by dispersing a dispersoid containing polylactic acid and carnauba wax in a water-based dispersion medium, in which 1 to 14% by mass of the carnauba wax is blended relative to a mass of the polylactic acid.

A copolymer composition including a method having a first step involving heating and submerging of LDPE into a heptane bath until the LDPE dissolves into the heptane bath resulting in a water-like solution. A second step including precipitating of the water-like solution forming a PE wax within the water-like solution. A third step involving filtering and distilling of the water-solution separating the PE wax from the heptane bath. A fourth step involving dispersing of the PE wax in a liquid carrier resulting in a combination. A fifth step involving polymerizing of the PE wax into LDPE by introducing the combination into PVA during an extrusion process resulting in a homogeneous mixture. A sixth step involving programming the water solubility of the homogeneous mixture. Resulting in the copolymer composition having programmable water solubility, shelf-life stability and quality in the presence of moisture or liquids for a predetermined length of time.

A method for coating solid granules containing a carbohydrate, gum Arabic, or protein by combining the solid granules with at least one solid coating material, and applying acoustic energy to said combination is provided as are coated solid granules prepared by the method.

An improved method forms and employs a wax to modify throughputs and melt flow in polymers. The method includes: (a) selecting a solid polymeric material, (b) heating the solid polymeric material in an extruder to produce a molten polymeric material, (c) filtering the molten polymeric material, (d) placing the molten polymeric material through a chemical depolymerization process in a reactor to produce a depolymerized polymeric material, and (e) adding the depolymerized material to a pre-wax mixture to produce a modified polymer.

Processing aid for aiding in orienting an extruded film layer including a preponderance, by weight, of a high crystalline polypropylene is a crystalline polypropylene wax.

An oriented film layer including a blend of crystalline polypropylene wax and high crystallinity polypropylene homopolymer is part of the invention.

The invention includes a method of forming an oriented film layer including a preponderance by weight of a high crystallinity polypropylene and includes the steps of blending a high crystallinity polypropylene with a crystalline polypropylene wax, directing the blend through an extruder to form a film layer and then orienting the film layer.

The invention includes a biaxially oriented, multi-layer film including a base layer and at least one skin layer. The base layer includes a blend of crystalline metallocene catalyzed polypropylene wax and a high crystallinity polypropylene.

The present disclosure provides a fully degradable Polyglycolic acid (PGA) composite packaging material comprises, by weight part, the following: PGA, polycaprolactone, poly(L-lactide--caprolactone), anti-blocking agent, slipping agent, flexibilizer, waterproofing agent, chitosan, reinforced fibers and the like. The present disclosure further provides a preparation method of the fully degradable modified polyglycolic acid composite packaging materials. The present disclosure has the following advantages. The packaging material of the present disclosure has good microbial degradation and hydrolysis. With complete biodegradation, it would result in end-products, water and carbon dioxide, which are environmentally friendly, non-toxic and pose no threat to human- and animal-health. The packaging material of the present disclosure has good mechanical properties, and can fully meet various application requirements of packaging materials. Inexpensive and environmental pollution-free fillers can be added without influence on mechanical properties. The cost can be effectively reduced. The preparation process is simple.

In one aspect, a foamable composition is disclosed, which comprises a base polymer, talc and a citrate compound blended with the base polymer. In some embodiments, the concentration of the talc in the composition is in a range of about 0.05% to about 25% by weight, e.g., in a range of about 2% to about 20%, or in a range of about 3% to about 15%, or in a range of about 5% to about 10%. Further, the concentration of the citrate compound in the composition can be, for example, in a range of about 0.05% to about 3% by weight, or in a range of about 0.02% to about 0.9% by weight, or in a range of about 0.03% to about 0.8% by weight, or in a range of about 0.04% to about 0.7% by weight, or in a range of about 0.05% to about 0.6% by weight.

An oriented polyester film containing antioxidant and modified polyolefin wax in a surface layer on at least one side thereof, wherein the oriented polyester film is such that the modified polyolefin wax contained in said layer is present in an amount that, as measured based on weight of a composition at said layer, is not less than 0.1 wt % but less than 3.0 wt %, and wherein the modified polyolefin wax is such that acid value thereof is not less than 1 mg KOH/g but less than 50 mg KOH/g, 3 wt % weight loss onset temperature thereof is not less than 300 C., weight-average molecular weight thereof is within a range that is 3,500 to 65,000, and the antioxidant is present in an amount that, as measured based on the weight of the composition, is not less than 0.02 wt % but less than 0.35 wt %.