POLYOLEFIN BASED FILMS SUITABLE FOR THERMOFORMING

The present invention relates to a film structure comprising an outer layer, a core and an inner layer (or sealant layer). The outer layer comprises a polyolefinic material having a Vicat softening temperature of 85° C. or greater, and a total crystallinity in the range of 25 to 45%. The core comprises a linear low density polyethylene having a density of 0.925 g/cmor less, and a melt index of 4.0 g/10 min or less. The inner layer comprises linear low density polyethylene having a density of from 0.865 to 0.926 g/cmand a melt index of less than 4.0 g/10 minutes. The films of the present invention have less than 25% of polyethylenes having a density of 0.930 g/cmor greater. Further, the films of the present invention can be characterized by the substantial absence of polyamide, polyester, ethylene vinyl acetate, ionomers, polyvinyl chloride, and/or cyclic olefin polymers. 2. The film structure of wherein the film is characterized by having a penetration of probe according to ASTM D5748 at 100° C. of at least 190 mm3. The film structure of wherein the film structure contains from 3 to 14 distinct layers.4. The film structure of wherein the film structure contains from 5 to 9 distinct layers.5. The film structure of wherein the core comprises from 1 to 12 distinct layers.6. The film structure of wherein the core comprises at least one comprising ultra low density polyethylene or mLLDPE.7. The film structure of wherein the core further comprises LLDPE and wherein the core has an overall density less than 0.912 g/cm.8. The film structure of wherein the inner layer further comprises up to 30% by weight of the inner layer of high pressure low density polyethylene.9. The film structure of wherein the film structure further comprises a barrier layer claim 3 , said barrier layer comprising EVOH.10. The film structure of further comprising tie layers on either side of the barrier layer claim 9 , said tie layers comprising maleic anhydride grafted polyethylene.11. The film ...

Polymer Film Structures and Articles Made Therefrom

A film structure comprising: a first surface layer which comprises a polymeric material selected from the group consisting of LLDPE, MDPE, and polypropylene and blends thereof, wherein the polymeric material has a melting point of at least 95° C. and a total crystallinity from 25 to 45%; a first tie layer comprising at least one component selected from the group consisting of EVA, EEA, EMA, and EBA; an internal layer which comprises a PVDC copolymer; and a second surface layer which comprises an LLDPE having a density of from 0.865 to 0.925 g/cm3 and a melt index, I, of less than 6.0 g/10 min, and wherein the internal layer represents from 6 to 25% of a total thickness of the film structure is provided. Also provided are articles made from the film structure. 1. A film structure suitable for use in thermoforming applications comprising:a first surface layer which comprises a polymeric material selected from the group consisting of LLDPE, MDPE, and polypropylene and blends thereof, wherein the polymeric material has a melting point of at least 95° C. and a total crystallinity from 25 to 45%;a first tie layer comprising at least one component selected from the group consisting of EVA, EEA, EMA, and EBA;an internal layer which comprises a PVDC copolymer; and{'sup': '3', 'sub': '2', 'a second surface layer which comprises an LLDPE having a density of from 0.865 to 0.925 g/cmand a melt index, I, of less than 6.0 g/10 min, and wherein the film structure is characterized by comprising less than or equal to 10% by weight of the film structure of total amount of components selected from the group consisting of polyamides, polyesters, ethylene vinyl acetate, ionomers, polyvinyl chloride, and cyclic olefin polymers, and wherein the internal layer represents from 6 to 25% of a total thickness of the film structure.'}2. The film structure according to claim 1 , wherein the first surface layer comprises a propylene-based plastomer or elastomer.3. The film structure according to ...

MULTILAYER STRUCTURE, A FILM MADE THEREFROM AND A PACKAGE FORMED THEREFROM

A multilayer structure including a first layer; a sealant layer formed from one or more ethylene-based polymers; and a cohesive failure layer adjacent to the sealant layer and formed from a polymer blend which comprises an elastomeric propylene based polymer and a second polymer, wherein the second polymer is selected from the group consisting of high pressure low density polyethylene, high density polyethylene, ethylene acrylic acid copolymers, ethylene(meth)acrylic acid copolymers and combinations thereof is provided. 1. A multilayer structure comprising:a first layer;a sealant layer formed from one or more ethylene-based polymers; anda cohesive failure layer adjacent to the sealant layer and formed from a polymer blend which comprises an elastomeric propylene based polymer and a second polymer, wherein the second polymer is selected from the group consisting of high pressure low density polyethylene, high density polyethylene, ethylene acrylic acid copolymers, ethylene(meth)acrylic acid copolymers and combinations thereof.2. The multilayer structure according to claim 1 , wherein the seal force does not substantially increase (will define this term in the description) with increasing sealing temperature.3. The multilayer structure according to claim 1 , wherein the sealant layer is made from one or more materials selected from the group consisting of ethylene-based polymers claim 1 , polar ethylene based copolymers claim 1 , and ionomers.4. The multilayer structure according to claim 1 , wherein the sealant layer has a thickness equal to or less than 50 microns.5. The multilayer structure according to claim 1 , wherein the multilayer structure has 3 or more layers.6. The multilayer structure according to claim 1 , wherein the sealant layer consists of low density polyethylene.7. The multilayer structure according to claim 1 , wherein the sealant layer is formed from 1 to 100 wt % one or more polymers selected from LLDPE claim 1 , olefin-based plastomers and ...

MULTILAYER STRUCTURES, MULITLAYER FILMS, AND PACKAGES FORMED THEREFROM

Embodiments relate to multilayer structures, multilayer films, and packages formed therefrom. As an example, a multilayer structure can include a multilayer structure comprising a polyolefin sealant layer, a coupling layer on the polyolefin sealant layer, where the coupling layer includes a polyolefin and a maleic anhydride grafted (MAH) polymer, where the total amount of MAH polymer is from 15 weight percent to 50 weight percent of a total weight percent of the coupling layer, where the polyolefin is selected from the group consisting of a high pressure low density polyethylene, a high density polyethylene, an ethylene acrylic acid copolymer, an ethylene(meth)acrylic acid copolymer, propylene based plastomers, ionomers or a combination thereof, and a barrier layer directly on the coupling layer. 1. A multilayer structure comprising:a polyolefin sealant layer;a coupling layer on the polyolefin sealant layer, where the coupling layer includes a polyolefin and a maleic anhydride grafted (MAH) polymer, where the total amount of MAH polymer is from 15 weight percent to 50 weight percent of a total weight percent of the coupling layer; where the polyolefin is selected from the group consisting of a high pressure low density polyethylene, a high density polyethylene, an ethylene acrylic acid copolymer, an ethylene(meth)acrylic acid copolymer, propylene based plastomers, ionomers, polybutylene, or a combination thereof; anda barrier layer directly on the coupling layer.2. The multilayer structure of claim 1 , where the coupling layer is from 1 micron to 30 microns thick or where the coupling layer is from 10 microns to 15 microns thick.3. (canceled)4. The multilayer structure of claim 1 , where the polyolefin in the coupling layer is from 50 weight percent to 85 weight percent of a total weight of the coupling layer.5. The multilayer structure of claim 4 , where the polyolefin further comprises at least two polyolefins claim 4 , where the at least two polyolefins include a ...

FILMS HAVING DESIRABLE MECHANICAL PROPERTIES AND ARTICLES MADE THEREFROM

Disclosed herein is a film comprising a layer that comprises a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I, measured according to ASTM D1238 (2.16 kg, 190 C), of from 0.5 to 10 g/10 min; a density (measured according to ASTM D792) of less than 0.935 g/cm; a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg, 190 C) of from 6.0 to 7.5; a molecular weight distribution (Mw/Mn) of from 2.8 to 3.9; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms, and a low density polyethylene. 1. A film comprising a layer comprising: [{'sub': '2', 'a. a melt index, I, measured according to ASTM D 1238 (2.16 kg, 190° C.), of from 0.5 to 10 g/10 min;'}, {'sup': '3', 'b. a density measured according to ASTM D792 of less than 0.935 g/cm;'}, {'sub': 10', '2', '10, 'c. a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg, 190° C.) of from 6.0 to 7.5;'}, {'sub': w', 'n, 'd. a molecular weight distribution (M/M) of from 2.8 to 3.9; and'}, 'e. a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms; and, '(a) 50% or more by weight or more of a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties(b) 50% or less by weight of a low density polyethylene.2. The film of claim 1 , wherein the low density polyethylene has a melt index claim 1 , 1 claim 1 , range of from 0.1-5 g/10 min.3. The film of claim 1 , wherein the film comprises from 5-30% by weight of the low density polyethylene.4. The film of claim 1 , wherein the film is a monolayer film.5. The film of claim 1 , wherein the film is a multilayer film.6. The film of claim 1 , wherein the polyethylene composition is ...

MULTILAYER FILMS SUITABLE FOR USE IN THERMOFORMING APPLICATIONS

The present invention provides multilayer films. In some embodiments, multilayer films of the present invention are desirable for use in thermoforming applications. In one aspect, a multilayer film comprises a first layer comprising polypropylene, polyethylene, or blends thereof, a second layer comprising polypropylene, polyethylene, or blends thereof, and a third layer between the first layer and the second layer, the third layer comprising polypropylene, polyethylene, or blends thereof, wherein at least one of the layers further comprises a cyclic olefin copolymer and wherein the multilayer film comprises at least 1 weight percent and less than 5 weight percent cyclic olefin copolymer based on the total weight of the film. 2. The multilayer film of claim 1 , wherein the first layer comprises propylene/α-olefin copolymer claim 1 , propylene homopolymer claim 1 , or blends thereof.3. The multilayer film of claim 1 , wherein the second layer comprises propylene/α-olefin copolymer claim 1 , propylene homopolymer claim 1 , or blends thereof.4. The multilayer film of claim 1 , wherein the third layer comprises propylene/α-olefin copolymer claim 1 , propylene homopolymer claim 1 , or blends thereof.6. The multilayer film of claim 1 , wherein at least two layers further comprise cyclic olefin copolymer.7. The multilayer film of claim 1 , wherein the first layer comprises 5 to 15 weight percent cyclic olefin copolymer based on the weight of the first layer claim 1 , and wherein the second layer comprises 5 to 15 weight percent cyclic olefin copolymer based on the weight of the second polymer.8. The multilayer film of claim 1 , wherein the third layer further comprises cyclic olefin copolymer.9. The multilayer film of claim 1 , wherein the film comprises at least 5 layers.10. The multilayer film of claim 1 , wherein the two outermost layers comprise cyclic olefin copolymer.11. The multilayer film of claim 1 , wherein the film exhibits a water vapor transmission rate of 1.10 ...

POLYOLEFIN BASED LAMINATED STRUCTURES WITH ELASTIC PROPERTIES

Embodiments of laminated structures include a first film comprising a first polyolefin; an intermediate layer comprising a laminate adhesive, and a second film comprising a second polyolefin. The laminated structures exhibit excellent elastic recovery properties, ensuring that the laminated structure can adapt and hold to the shape of the packaged product. 1. A laminated structure comprising:(a) a first film comprising a first polyolefin;(b) an intermediate layer comprising a laminate adhesive; and(c) a second film comprising a second polyolefin;wherein the laminated structure exhibits an elastic recovery greater than 80% in both the cross direction and the machine direction for 15% of strain, greater than 70% in both the cross direction and the machine direction for 50% strain, and greater than 50% in both the cross direction and the machine direction for 100% strain when measured at room temperature according to ASTM D5459, and wherein the laminated structure has a delamination force greater than 300 Win when measured at 23° C. according to ASTM F904.2. The laminated structure according to claim 1 , further comprising a toner or ink image printed on said first inner film layer.3. The laminated structure according to claim 1 , wherein the laminated structure exhibits a load at initial strain of greater than 0.5 lbf and less than 10.0 lbf in both the cross direction and the machine direction for 15% strain claim 1 , 50% strain claim 1 , and 100% strain when measured at room temperature according to ASTM D5459.4. The laminated structure according to claim 1 , wherein the first film and the second film exhibit an elastic recovery greater than 80% in both the cross direction and the machine direction for 15% of strain claim 1 , greater than 70% in both the cross direction and the machine direction for 50% strain claim 1 , and greater than 65% in both the cross direction and the machine direction for 100% strain when measured at room temperature according to ASTM D5459. ...

Thermoformed film compositions with enhanced toughness after thermoforming processes

Embodiments of thermoformed monolayer or multilayer films are provided, wherein the thermoformed monolayer multilayer films comprise a first composition comprising at least one ethylene-based polymer, wherein the first composition comprises a Molecular Weighted Comonomer Distribution Index (MWCDI) value greater than 0.9, and a melt index ratio (I10/I2) that meets the following equation: I10/I2≥7.0-1.2×log (I2).

composições de filme termoformadas com tenacidade intensificada após processos de termoformação

Modalidades de filmes monocamada ou de múltiplas camadas termoformados são fornecidas, em que os filmes monocamada ou de múltiplas camadas termoformados compreendem uma primeira composição compreendendo pelo menos um polímero à base de etileno, em que a primeira composição compreende um valor de Índice de Distribuição de Comonômero Ponderado Molecular (MWCDI) maior que 0,9 e uma razão de índice de fusão (I10/I2) que atende à seguinte equação: I10/I2 = 7,0 - 1,2 x log (I2).

Thermoformed film compositions with enhanced toughness after thermoforming processes

Embodiments of thermoformed monolayer or multilayer films are provided, wherein the thermoformed monolayer multilayer films comprise a first composition comprising at least one ethylene-based polymer, wherein the first composition comprises a Molecular Weighted Comonomer Distribution Index (MWCDI) value greater than 0.9, and a melt index ratio (I10/I2) that meets the following equation: I10/I2 ≥ 7.0 - 1.2 x log (I2).

Thermoformed film compositions with enhanced toughness after thermoforming processes

Embodiments of thermoformed monolayer or multilayer films are provided, wherein the thermoformed monolayer multilayer films comprise a first composition comprising at least one ethylene-based polymer, wherein the first composition comprises a Molecular Weighted Comonomer Distribution Index (MWCDI) value greater than 0.9, and a melt index ratio (I10/I2) that meets the following equation: I10/I2≥7.0−1.2×log (I2).

Polyolefin based films suitable for thermoforming

The present invention relates to a film structure comprising an outer layer, a core and an inner layer (or sealant layer). The outer layer comprises a polyolefinic material having a Vicat softening temperature of 85° C. or greater, and a total crystallinity in the range of 25 to 45%. The core comprises a linear low density polyethylene having a density of 0.925 g/cm 3 or less, and a melt index of 4.0 g/10 min or less. The inner layer comprises linear low density polyethylene having a density of from 0.865 to 0.926 g/cm 3 and a melt index of less than 4.0 g/10 minutes. The films of the present invention have less than 25% of polyethylenes having a density of 0.930 g/cm 3 or greater. Further, the films of the present invention can be characterized by the substantial absence of polyamide, polyester, ethylene vinyl acetate, ionomers, polyvinyl chloride, and/or cyclic olefin polymers.

Partially coated films and containers formed therefrom

Una película parcialmente revestida que comprende: (a) una película que tiene dos superficies exteriores, en donde una primera superficie exterior es proporcionada por una capa de película que comprende de 70 a 100 por cien en peso de una poliolefina que tiene una densidad de 0,860 a 0,965 g/cm3; y (b) un revestimiento sobre la primera superficie exterior de la película que comprende poliuretano, en donde el revestimiento cubre menos del 25% del área superficial de la primera superficie exterior de la película y en donde la parte revestida de la película presenta un desgarro de Elmendorf en al menos una de la dirección de mecanizado o en la dirección transversal que es al menos un 20% menor que el desgarro de Elmendorf de la parte no revestida en la misma dirección, midiéndose el desgarro de Elmendorf de acuerdo con la norma ASTM D1922. A partially coated film comprising: (a) a film having two outer surfaces, wherein a first outer surface is provided by a film layer comprising 70 to 100 weight percent of a polyolefin having a density of 0.860 at 0.965 g/cm3; and (b) a coating on the first outer surface of the film comprising polyurethane, wherein the coating covers less than 25% of the surface area of the first outer surface of the film and wherein the coated portion of the film has a tear Elmendorf tear in at least one of the machine direction or in the cross direction that is at least 20% less than the Elmendorf tear of the uncoated part in the same direction, the Elmendorf tear being measured in accordance with ASTM D1922.

Films with desirable mechanical properties and articles made from them

Una película que comprende una capa que comprende: (a) un 50 % o más en peso de una composición de polietileno que comprende el producto de reacción de etileno y opcionalmente uno o más comonómeros de alfa-olefina, en donde dicha composición de polietileno se caracterizada por las siguientes propiedades: a. un índice de fluidez, I2, medido según la norma ASTM D 1238 (2,16 kg, 190°C), de desde 0,5 a 10 g/10 min; b. una densidad medida según la norma ASTM D792 de menos de 0,935 g/cm3; c. una relación de fluidez, I10/I2, en donde I10 se mide según la norma ASTM D1238 (10 kg, 190°C) de desde 6,0 a 7,5; d. una distribución de pesos moleculares (Mw/Mn) de 2,8 a 3,9; e. una insaturación de vinilo de más de 0,12 vinilos por mil átomos de carbono; y f. un peso molecular promedio z (Mz) de 380.000 a 450.000 g/mol; y (b) un 50 % o menos en peso de un polietileno de baja densidad. A film comprising a layer comprising: (a) 50% or more by weight of a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a. a melt index, I2, measured according to ASTM D 1238 (2.16 kg, 190°C), of from 0.5 to 10 g/10 min; b. a density measured according to ASTM D792 of less than 0.935 g/cm3; c. a fluidity ratio, I10/I2, where I10 is measured according to ASTM D1238 (10 kg, 190°C) of from 6.0 to 7.5; d. a molecular weight distribution (Mw/Mn) of 2.8 to 3.9; and. a vinyl unsaturation of more than 0.12 vinyls per thousand carbon atoms; and f. a z-average molecular weight (Mz) of 380,000 to 450,000 g/mol; and (b) 50% or less by weight of a low density polyethylene.

Multilayer structure, a film made therefrom and a package formed therefrom

A multilayer structure including a first layer; a sealant layer formed from one or more ethylene-based polymers; and a cohesive failure layer adjacent to the sealant layer and formed from a polymer blend which comprises an elastomeric propylene based polymer and a second polymer, wherein the second polymer is selected from the group consisting of high pressure low density polyethylene, high density polyethylene, ethylene acrylic acid copolymers, ethylene(meth)acrylic acid copolymers and combinations thereof is provided.

Thermoformed film compositions with enhanced toughness after thermoforming processes

Embodiments of thermoformed monolayer or multilayer films are provided, wherein the thermoformed monolayer multilayer films comprise a first composition comprising at least one ethylene-based polymer, wherein the first composition comprises a Molecular Weighted Comonomer Distribution Index (MWCDI) value greater than 0.9, and a melt index ratio (I10/I2) that meets the following equation: I10/I2 ≥ 7.0 - 1.2 x log (I2).

Películas multicapa adecuadas para usar en aplicaciones de termoformado

La presente invención proporciona películas multicapa. En algunas formas de realización, las películas multicapa de la presente invención son deseables para usar en aplicaciones de termoformado. En un aspecto, una película multicapa comprende una primera capa que comprende polipropileno, polietileno o sus mezclas, una segunda capa que comprende polipropileno, polietileno o sus mezclas y una tercera capa entre la primera capa y la segunda capa, donde la tercera capa comprende polipropileno, polietileno o sus mezclas, en donde al menos una de las capas también comprende un copolímero de olefina cíclica y en donde la película multicapa comprende al menos el 1 % en peso y menos del 5 % en peso de copolímero de olefina cíclica con base en el peso total de la película.

Peliculas multicapa adecuadas para usarse en aplicaciones de termoformado.

La presente invención proporciona películas multicapa. En algunas modalidades, las películas multicapa de la presente invención son deseables para usarse en aplicaciones de termoformado. En un aspecto. una película multicapa comprende una primera capa que comprende polipropileno. polietileno o sus mezclas, una segunda capa que comprende polipropileno. polietileno o sus mezclas y una tercera capa entre la primera capa y la segunda capa. donde la tercera capa comprende polipropileno. polietileno o sus mezclas, en donde al menos una de las capas también comprende un copolímero de olefina cíclica y en donde la película multicapa comprende al menos el 1 % en peso y menos del 5 % en peso de copolímero de olefina cíclica con base en el peso total de la película.

THERMOFORMED FILM COMPOSITIONS WITH IMPROVED HARDNESS AFTER THERMOFORMING PROCESSES

Se proporcionan formas de realización de las películas monocapa o multicapa termoformadas, en donde las películas monocapa o multicapa termoformadas comprenden una primera composición que comprende al menos un polímero a base de etileno, en donde la primera composición comprende un valor del índice de distribución de peso molecular de comonómero (MWCDI) mayor de 0,9, y una relación de índice de fusión (I₁₀/I₂) que cumple la siguiente ecuación: I₁₀/I₂ ³ 7,0 - 1,2 x log (I₂). Embodiments of thermoformed monolayer or multilayer films are provided, wherein the thermoformed monolayer or multilayer films comprise a first composition comprising at least one ethylene-based polymer, wherein the first composition comprises a weight distribution index value molecular comonomer (MWCDI) greater than 0.9, and a melting index ratio (I₁₀ / I₂) that meets the following equation: I₁₀ / I₂ ³ 7.0 - 1.2 x log (I₂).

Composiciones de pelicula termoformada con tenacidad mejorada despues de procesos de termoformado.

Se proporcionan modalidades de películas monocapa o multicapa termoformadas, en donde las películas monocapa o multicapa termoformadas comprenden una primera composición que comprende al menos un polímero a base de etileno, en donde la primera composición comprende un valor de índice de distribución de peso molecular de comonómero (MWCDI) mayor de 0.9 y una relación de índice de fusión (I10/I2) que cumple con la siguiente ecuación: I10/I2 = 7.0 - 1.2 x log (I2).

POLYMER FILM STRUCTURES AND ITEMS MADE FROM THEM

Se provee una estructura de película que comprende: una primera capa superficial que comprende un material polimérico seleccionado del grupo que consta de LLDPE, MDPE, y polipropileno y sus combinaciones, en donde el material polimérico posee un punto de fusión de al menos 95ºC y una cristalinidad total de 25 a 45%; una primera capa de unión que comprende al menos un componente seleccionado del grupo que consta de EVA, EEA, EMA, y EBA; una capa interna que comprende un copolímero de PVDC; y una segunda capa superficial que comprende un LLDPE que posee una densidad de 0,865 a 0,925 g/cm³ y un índice de fusión, I₂, inferior a 6,0 g/10 min., y en donde la capa interna representa de 6 a 25% de un espesor total de la estructura de película. También, se proveen artículos realizados a partir de la estructura de película. A film structure is provided comprising: a first surface layer comprising a polymeric material selected from the group consisting of LLDPE, MDPE, and polypropylene and combinations thereof, wherein the polymeric material has a melting point of at least 95 ° C and a total crystallinity of 25 to 45%; a first tie layer comprising at least one component selected from the group consisting of EVA, EEA, EMA, and EBA; an inner layer comprising a PVDC copolymer; and a second surface layer comprising an LLDPE having a density of 0.865 to 0.925 g / cm³ and a melt index, I₂, less than 6.0 g / 10 min., and wherein the inner layer represents 6 to 25 % of a total thickness of the film structure. Also, articles made from the film structure are provided.

Films having desirable mechanical properties and articles made therefrom

Disclosed herein is a film comprising a layer that comprises a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I 2 , measured according to ASTM D1238 (2.16 kg, 190C), of from 0.5 to 10 g/10 min; a density (measured according to ASTM D792) of less than 0.935 g/cm 3 ; a melt flow ratio, I 10 /I 2 , wherein I 10 is measured according to ASTM D1238 (10 kg, 190C) of from 6.0 to 7.5; a molecular weight distribution (Mw/Mn) of from 2.8 to 3.9; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms, and a low density polyethylene.

Films having desirable mechanical properties and articles made therefrom

Disclosed herein is a film comprising a layer that comprises a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I2, measured according to ASTM D1238 (2.16 kg, 190 C), of from 0.5 to 10 g/10 min; a density (measured according to ASTM D792) of less than 0.935 g/cm3; a melt flow ratio, I10/I2, wherein I10 is measured according to ASTM D1238 (10 kg, 190 C) of from 6.0 to 7.5; a molecular weight distribution (Mw/Mn) of from 2.8 to 3.9; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms, and a low density polyethylene.

Polyolefin based laminated structures with elastic properties

Embodiments of laminated structures include a first film comprising a first polyolefin; an intermediate layer comprising a laminate adhesive, and a second film comprising a second polyolefin. The laminated structures exhibit excellent elastic recovery properties, ensuring that the laminated structure can adapt and hold to the shape of the packaged product.

POLYOLEFINE-BASED FILMS SUITABLE FOR THERMOFORMING

La presente se refiere a una estructura de película que comprende una capa externa, un núcleo y una capa interna (o capa sellante). La capa externa comprende un material poliolefínico que tiene una temperatura de reblandecimiento Vicat de 85ºC o mayor, preferiblemente 90ºC o mayor, y una cristalinidad total en la escala de 25% a 45%. El núcleo comprende un polietileno lineal de baja densidad que tiene una densidad de 0.925 g/cm³ o menor, y un índice de fluidez en estado fundido de 4.0 g/10 min o menor. La capa interna (o capa sellante) comprende polietileno lineal de baja densidad que tiene una densidad de 0.865 a 0.926 g/cm³, y un índice de fluidez en estado fundido menor de 4.0 g/10 minutos. Las películas de la presente se caracterizan adicionalmente por tener la cantidad total de polietileno que tiene una densidad de 0.930 g/cm³ o mayor que compone la película, que es menor de 25% en peso de toda la película. Además, las películas de la presente se pueden caracterizar por la ausencia sustancial (por ejemplo, menos de 5%, preferiblemente menos de 1% en peso de la película) de poliamida, poliéster, etilenvinilacetato, ionómeros, cloruro de polivinilo, y/o polímeros de olefina cíclicos. This refers to a film structure comprising an outer layer, a core and an inner layer (or sealant layer). The outer layer comprises a polyolefin material having a Vicat softening temperature of 85 ° C or greater, preferably 90 ° C or greater, and a total crystallinity on the scale of 25% to 45%. The core comprises a linear low density polyethylene having a density of 0.925 g / cm³ or less, and a melt flow index of 4.0 g / 10 min or less. The inner layer (or sealant layer) comprises linear low density polyethylene having a density of 0.865 to 0.926 g / cm³, and a melt flow rate of less than 4.0 g / 10 minutes. The films herein are further characterized by having the total amount of polyethylene having a density of 0.930 g / cm³ or greater that composes the film, which is less than 25% ...

MULTI-PAPER STRUCTURES, MULTI-PAPER FILMS AND FORMED CONTAINERS FROM THEM

Estructuras multicapa, películas multicapa y envases formados a partir de ellas. Como un ejemplo, una estructura multicapa puede incluir una estructura multicapa que comprende una capa sellante de poliolefina, una capa de acoplamiento sobre la capa sellante de poliolefina donde la capa de acoplamiento incluye una poliolefina y un polímero injertado con anhídrido maleico (MAH), donde la cantidad total de polímero de MAH va del 15% en peso al 50% en peso de un porcentaje en peso total de la capa de acoplamiento, donde la poliolefina se selecciona del grupo que consiste en un polietileno de baja densidad de alta presión, un polietileno de alta densidad, un copolímero de etileno-ácido acrílico, un copolímero de etileno-ácido (met)acrílico, plastómeros a base de propileno, ionómeros o una de sus combinaciones y una capa de barrera directamente sobre la capa de acoplamiento. Multilayer structures, multilayer films and containers formed from them. As an example, a multilayer structure may include a multilayer structure comprising a polyolefin sealing layer, a coupling layer on the polyolefin sealing layer where the coupling layer includes a polyolefin and a maleic anhydride grafted polymer (MAH), where The total amount of MAH polymer ranges from 15% by weight to 50% by weight of a total percentage by weight of the coupling layer, where the polyolefin is selected from the group consisting of a high pressure low density polyethylene, a high density polyethylene, an ethylene-acrylic acid copolymer, an ethylene-(meth) acrylic acid copolymer, propylene-based plastomers, ionomers or one of their combinations and a barrier layer directly on the coupling layer.

film and movie structure

resumo “estrutura de filme e filme” a presente invenção se refere a uma estrutura de filme compreendendo uma camada externa, um núcleo e uma camada interna (ou camada selante). a camada externa compreende um material poliolefínico tendo uma temperatura de amolecimento vicat de 85ºc ou mais, o mais preferivelmente 90ºc ou mais e uma cristalinidade total na faixa de 25 a 45%. o núcleo compreende um polietileno linear de baixa densidade tendo uma densidade de 0,925 g/cm3 ou menos, e um índice de fusão de 4,0g/10 min ou menos. a camada interna (ou camada selante) compreende um polietileno linear de baixa densidade tendo uma densidade de 0,865 a 0,926 g/cm3, e um índice de fusão menor que 4,0g/10 min. os filmes da presente invenção são também caracterizados por ter a quantidade total de polietileno com uma densidade de 0,930 g/cm3 ou mais, o que caracteriza um filme com menos de 25% em peso do filme total. além disso, os filmes da presente invenção podem ser caracterizados pela ausência substancial (por exemplo, menor que 5%, mais preferivelmente menor que 1% em peso do filme) de poliamiada, poliéster, etileno acetato de vinila, ionômeros, cloreto de polivinila, e/ou polímeros olefínicos cíclicos. abstract "film and film structure" the present invention relates to a film structure comprising an outer layer, a core and an inner layer (or sealant layer). the outer layer comprises a polyolefinic material having a vicat softening temperature of 85°C or more, most preferably 90°C or more and a total crystallinity in the range of 25 to 45%. the core comprises a linear low density polyethylene having a density of 0.925g/cm 3 or less, and a melt index of 4.0g/10min or less. the inner layer (or sealant layer) comprises a linear low density polyethylene having a density of 0.865 to 0.926 g/cm 3 , and a melt index of less than 4.0g/10 min. the films of the present invention are also characterized by having the total amount of polyethylene with a density of 0.930 g/cm 3 or ...

Multilayer structures, multilayer films, and packages formed therefrom

Embodiments relate to multilayer structures, multilayer films, and packages formed therefrom. As an example, a multilayer structure can include a multilayer structure comprising a polyolefin sealant layer, a coupling layer on the polyolefin sealant layer, where the coupling layer includes a polyolefin and a maleic anhydride grafted (MAH) polymer, where the total amount of MAH polymer is from 15 weight percent to 50 weight percent of a total weight percent of the coupling layer, where the polyolefin is selected from the group consisting of a high pressure low density polyethylene, a high density polyethylene, an ethylene acrylic acid copolymer, an ethylene(meth)acrylic acid copolymer, propylene based plastomers, ionomers or a combination thereof, and a barrier layer directly on the coupling layer.

Films having desirable mechanical properties and articles made therefrom

Multilayer films suitable for use in thermoforming applications

The present invention provides multilayer films. In some embodiments, multilayer films of the present invention are desirable for use in thermoforming applications. In one aspect, a multilayer film comprises a first layer comprising polypropylene, polyethylene, or blends thereof, a second layer comprising polypropylene, polyethylene, or blends thereof, and a third layer between the first layer and the second layer, the third layer comprising polypropylene, polyethylene, or blends thereof, wherein at least one of the layers further comprises a cyclic olefin copolymer and wherein the multilayer film comprises at least 1 weight percent and less than 5 weight percent cyclic olefin copolymer based on the total weight of the film.

Multilayer structures, multilayer films, and packages formed therefrom

Embodiments relate to multilayer structures, multilayer films, and packages formed therefrom. As an example, a multilayer structure can include a multilayer structure comprising a polyolefin sealant layer, a coupling layer on the polyolefin sealant layer, where the coupling layer includes a polyolefin and a maleic anhydride grafted (MAH) polymer, where the total amount of MAH polymer is from 15 weight percent to 50 weight percent of a total weight percent of the coupling layer, where the polyolefin is selected from the group consisting of a high pressure low density polyethylene, a high density polyethylene, an ethylene acrylic acid copolymer, an ethylene(meth)acrylic acid copolymer, propylene based plastomers, ionomers or a combination thereof, and a barrier layer directly on the coupling layer.

Polyolefin based films suitable for thermoforming

Polyolefin based laminated structures with elastic properties.

La presente invención se refiere a estructuras laminadas que incluyen una primera película que comprende una primera poliolefina; una capa intermedia que comprende un adhesivo de laminado, y una segunda película que comprende una segunda poliolefina. Las estructuras laminadas exhiben excelentes propiedades de recuperación elástica, asegurando que la estructura laminada puede adaptarse y mantener la forma del producto envasado.

Thermoformed film compositions with enhanced toughness after thermoforming processes

Filme parcialmente revestido, laminado e embalagem

A presente invenção se refere a filmes revestidos e embalagens formadas a partir de tais filmes. Em um aspecto, um filme parcialmente revestido compreende (a) um filme que tem duas superfícies externas, em que uma primeira superfície externa é fornecida por uma camada de filme que compreende de 70 a 100 por cento em peso de uma poliolefina que tem uma densidade de 0,860 a 0,965 g/cm3; e (b) um revestimento na primeira superfície externa do filme que compreende poliuretano, em que o revestimento cobre menos de 25% da área de superfície da primeira superfície externa do filme, e em que a porção revestida do filme exibe uma ruptura Elmendorf em pelo menos uma dentre a direção de máquina ou direção cruzada que é pelo menos 20% inferior à ruptura Elmendorf da porção não revestida na mesma direção, em que a ruptura Elmendorf é medida de acordo com ASTM D1922.

Estrutura de filme de múltiplas camadas termoformado, filme monocamada termoformado e artigo

Modalidades de filmes monocamada ou de múltiplas camadas termoformados são fornecidas, em que os filmes monocamada ou de múltiplas camadas termoformados compreendem uma primeira composição compreendendo pelo menos um polímero à base de etileno, em que a primeira composição compreende um valor de Índice de Distribuição de Comonômero Ponderado Molecular (MWCDI) maior que 0,9 e uma razão de índice de fusão (I10/I2) que atende à seguinte equação: I10/I2 = 7,0 - 1,2 x log (I2).