Abstract: The present invention relates to a non-perforated reinforced stretch film comprising: a base film which has a thickness in the range of 3 ?m to 18 ?m, and 5 to 100 reinforcing strips fixed on at least one surface of said base film, wherein the width of each reinforcing strip is, independently, in the range of 1 mm to 17 mm.

Abstract: The invention provides a thermoplastic film comprising: a base film wherein the base film comprises a stretchable polyolefin material comprising one or more layers; and a plurality of extruded fiber elements; wherein the extruded fiber elements are located on at least one surface of the base film; wherein the extruded fibers form one or more protrusions relative to the plane of the base film; wherein at the location where the fiber elements are provided on the base film, a domain of a material mixture comprising the base film material and the fiber material is present between a domain of pure base film material and a domain of pure fiber material, and wherein the average thickness of the base film is less than the average thickness of the protrusion.

Abstract: The invention provides a thermoplastic film comprising: a base film wherein the base film comprises a stretchable polyolefin material comprising one or more layers; and a plurality of extruded fibre elements; wherein the extruded fibre elements are located on at least one surface of the base film; wherein the extruded fibres form one or more protrusions relative to the plane of the base film; wherein at the location where the fibre elements are provided on the base film, a domain of a material mixture comprising the base film material and the fibre material is present between a domain of pure base film material and a domain of pure fibre material, and wherein the average thickness of the base film is less than the average thickness of the protrusion.

Abstract: The present invention relates to a non-perforated reinforced stretch film comprising: a base film which has a thickness in the range of 3 ?m to 18 ?m, and 5 to 100 reinforcing strips fixed on at least one surface of said base film, wherein the width of each reinforcing strip is, independently, in the range of 1 mm to 17 mm.

Abstract: The invention provides a polyolefin pre-stretched packaging film comprising perforations arranged in a series of columns along a longitudinal direction of the film, wherein each adjacent column of said perforations is separated by a column without perforations along the longitudinal direction, and the perforations are staggered in a transverse direction across the film, wherein said film comprises an inherent cling surface on at least one of its surfaces; wherein the perforations cover at least 25% of the total surface area of the film, and the film has an inside/inside cling property of 5 to 22 gr, and a weight of no more than 13 g/m2.

Abstract: A packaging film with a main film made of a stretchable polymer film material and having a multiplicity of holes. A first condition of the main film including that a ratio of aeration percentage over final weight is greater than or equal to 14 meters per gram. A second condition of the main film is that the width of the packaging film is reducible by less than 15% between a condition before any stretching of the packaging film and a condition when the packaging film is stretched at an elongation equal to the elongation at the NDR point. A third condition of the main film is that a ratio of an absolute value of the difference of a holding force of the packaging film minus a predetermined target holding force divided by the target holding force is less than or equal to 5%.

Abstract: The invention provides a tacky polyolefin stretch film suitable for flexible packaging comprising (i) a base film comprising a stretchable polymeric material having a multiplicity of perforations covering at least 25% of the total area of the base film and arranged in a series of columns along a longitudinal direction of the film, wherein the columns of perforations are separated by columns without perforations along the longitudinal direction of the film, and the perforations are staggered in a transverse direction across the film; and (ii) a multiplicity of strengthening elements comprising stretchable polymeric material wherein the elements are fixed on the base film parallel to the longitudinal direction and at least one element is situated in a column without perforations; wherein said tacky polyolefin stretch film has an inside/inside cling property of at least 18 gr.

Abstract: An adhesive blend is described that can include a semi-crystalline copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and at least one C4 to C20 ?-olefin, the copolymer having a weight average molecular weight (Mw) from about 15,000 to about 200,000; an melt index (MI) from about 7 dg/min to about 3000 dg/min as measured by ASTM D 1238 (B), and a (Mw/Mn) of approximately 2. Various production processes are also described. Also described are adhesive compositions and methods for making adhesive compositions having polymers or polymer blends with melt flow rates (MFRS) equal to and above 250 dg/min. at 230°C. Certain specific embodiments of the invention involve the use of a free radical initiator, e.g., a peroxide.

Abstract: The invention provides a thermoplastic film comprising: a base film wherein the base film comprises a stretchable polyolefin material comprising one or more layers; and a plurality of extruded fibre elements; wherein the extruded fibre elements are located on at least one surface of the base film; wherein the extruded fibres form one or more protrusions relative to the plane of the base film; wherein at the location where the fibre elements are provided on the base film, a domain of a material mixture comprising the base film material and the fibre material is present between a domain of pure base film material and a domain of pure fibre material, and wherein the average thickness of the base film is less than the average thickness of the protrusion.

Abstract: The invention provides a polyolefin pre-stretched packaging film comprising perforations arranged in a series of columns along a longitudinal direction of the film, wherein each adjacent column of said perforations is separated by a column without perforations along the longitudinal direction, and the perforations are staggered in a transverse direction across the film, wherein said film comprises an inherent cling surface on at least one of its surfaces; wherein the perforations cover at least 25% of the total surface area of the film, and the film has an inside/inside cling property of 5 to 22 gr, and a weight of no more than 13 g/m2.

Abstract: A stretch film comprising a base film made of a stretchable plastic film material, a multiplicity of holes in the base film arranged in several columns along a main direction, at least one reinforcement strip made of a stretchable plastic film material. The reinforcement strip is arranged and fixed on the base film in an area between two adjacent columns of holes. The thickness of the base film is greater than or equal to the thickness of the reinforcement strip and the width (w) of the reinforcement strip is as great as possible, but is such that the reinforcement strip does not contact or overlap the holes in the adjacent columns of holes. The reinforcement strip may be fixed to the base film so as to be inseparable and indistinguishable from the base film.

Abstract: An adhesive blend is described that can include a semi-crystalline copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and at least one C4 to C20 ?-olefin, the copolymer having a weight average molecular weight (Mw) from about 15,000 to about 200,000; an melt index (MI) from about 7 dg/min to about 3000 dg/min as measured by ASTM D 1238(B), and a (Mw/Mn) of approximately 2. Various production processes are also described. Also described are adhesive compositions and methods for making adhesive compositions having polymers or polymer blends with melt flow rates (MFRs) equal to and above 250 dg/min. at 230 NC. Certain specific embodiments of the invention involve the use of a free radical initiator, e.g., a peroxide.

Abstract: An adhesive blend is described that can include a semi-crystalline copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and at least one C4 to C20 ?-olefin, the copolymer having a weight average molecular weight (Mw) from about 15,000 to about 200,000; an melt index (MI) from about 7 dg/min to about 3000 dg/min as measured by ASTM D 1238(B), and a (Mw/Mn) of approximately 2. Various production processes are also described. Also described are adhesive compositions and methods for making adhesive compositions having polymers or polymer blends with melt flow rates (MFRs) equal to and above 250 dg/min. at 230° C. Certain specific embodiments of the invention involve the use of a free radical initiator, e.g., a peroxide.

Abstract: A packaging film comprising a main film made of a stretchable polymer film material and having a multiplicity of holes on the main film includes is four conditions. A first condition means that a ratio of aeration percentage over final weight is greater than or equal to 14 meters per gram. The aeration percentage is calculated for a predetermined length of the packaging film as the total area covered by the holes over the total area of the packaging film including the area of the holes, when the packaging film is stretched to an elongation equal to the elongation at the Natural Draw Ratio point (NDR point). The final weight is the weight of the packaging film per film meter measured in grams per meter, when the packaging film is stretched at an elongation equal to the elongation at the NDR point.

Abstract: A stretch film comprising a base film made of a stretchable plastic film material, a multiplicity of holes in the base film arranged in several columns along a main direction, at least one reinforcement strip made of a stretchable plastic film material. The reinforcement strip is arranged and fixed on the base film in an area between two adjacent columns of holes. The thickness of the base film is greater than or equal to the thickness of the reinforcement strip and the width (w) of the reinforcement strip is as great as possible, but is such that the reinforcement strip does not contact or overlap the holes in the adjacent columns of holes. The reinforcement strip may be fixed to the base film so as to be inseparable and indistinguishable from the base film.

Abstract: The invention relates to novel adhesive alpha-olefin inter-polymers which are largely amorphous and have a rheological behavior that makes them suitable for adhesive use, both without and with minimzed amounts of tackifying resins. Specifically, the invention poly-alpha olefin inter-polymer may be composed of A) from 60 to 94% of units derived from one alpha mono-olefin having from 3 to 6 carbon atoms and B) from 6 to 40 mol % of units derived from one or more other mono-olefins having from 4 to 10 carbon atoms and at least one carbon atom more than A); and C) optionally from 0 to 10 mol % of units derived from another copolymerizable unsaturated hydrocarbon, different from A) and B); the diad distribution of component A in the polymer as determined by 13C NMR as described herein showing a ratio of experimentally determined diad distribution over the calculated Bernoullian diad distribution of less than 1.

Abstract: An adhesive blend is described that can include a semi-crystalline copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and at least one C4 to C20 &agr;-olefin, the copolymer having a weight average molecular weight (Mw) from about 15,000 to about 200,000; an melt index (MI) from about 7 dg/min to about 3000 dg/min as measured by ASTM D 1238(B), and a (Mw/Mn) of approximately 2. Various production processes are also described. Also described are adhesive compositions and methods for making adhesive compositions having polymers or polymer blends with melt flow rates (MFRs) equal to and above 250 dg/min. at 230NC. Certain specific embodiments of the invention involve the use of a free radical initiator, e.g., a peroxide.

Abstract: An adhesive blend is described that can include a semi-crystalline copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and at least one C4 to C20 &agr;-olefin, the copolymer having a weight average molecular weight (Mw) from about 15,000 to about 200,000; an melt index (MI) from about 7 dg/min to about 3000 dg/min as measured by ASTM D 1238(B), and a (Mw/Mn) of approximately 2. Various production processes are also described. Also described are adhesive compositions and methods for making adhesive compositions having polymers or polymer blends with melt flow rates (MFRs) equal to and above 250° dg/min. at 230° C. Certain specific embodiments of the invention involve the use of a free radical initiator, e.g., a peroxide.

Abstract: The invention relates to novel adhesive alpha-olefin inter-polymers which are largely amorphous and have a rheological behavior that makes them suitable for adhesive use, both without and with minimized amounts of tackifying resins. Specifically, the invention poly-alpha olefin inter-polymer may be composed of A) from 60 to 94 mol % of units derived from one alpha mono-olefin having from 3 to 6 carbon atoms and B) from 6 to 40 mol % of units derived from one or more other mono-olefins having from 4 to 10 carbon atoms and at least one carbon atom more than A); and C) optionally from 0 to 10 mol % of units derived from another copolymerizable unsaturated hydrocarbon, different from A) and B); the diad distribution of component A in the polymer as determined by 13C NMR as described herein showing a ratio of experimentally determined diad distribution over the calculated Bernoullian diad distribution of less than 1.

Abstract: This invention relates to a process for atomizing, spiral spraying, oscillation spraying or melt blowing propylene copolymers onto a substrate comprising selecting a poly-alpha olefin inter-polymer comprising: A) from 60 to 94% of units derived from an alpha mono-olefin having from 3 to 6 carbon atoms and B) from 6 to 40 mol % of units derived from ethylene or one or more other mono-olefins having from 4 to 10 carbon atoms and at least one carbon atom more than A); and C) optionally from 0 to 10 mol % of units derived from another copolymerizable unsaturated hydrocarbon, different from A) and B); wherein the inter-polymer has: i) an Mw/Mn of 6 or less; ii) a storage modulus G′, determined upon cooling, intersecting a value of 0.3 M Pa at a temperature of less than 85° C.; iii) a G″/G′ ratio of 18 or more when G′ is 10 Pa when measured at a frequency of 1 hz; and iv) a viscosity of 5000 mPa·sec or less at 190° C.