TH60904B - Multi-layer films and containers - Google Patents

Abstract

DC60 to prepare multi-layer films and containers made from multi-layer films which have excellent hermetic properties, transparency, mechanical strength and heat resistance of sterilization and can prevent leakage of additives from the film into the liquids present in the containers. In multi-layer films which include first layer (1), second layer (2), third layer (3), fourth layer (4) and fifth layer (5) stacked in this order, first layer (1) consists of random copolymer of propylene-ethylene and/or homopolymer of polypropylene, and second layer (2) and fourth layer (4) each consists of blend of random copolymer of propylene-ethylene and α-olefin elastomer, third layer (3) consists of blend of polycyclic olefin and proethylene and fifth layer (5) consists of A blend of polypropylene homopolymers and propylene-ethylene random copolymers in a weight ratio of 90:10 to 10:90. Containers are manufactured from multi-layer films having outer and inner layers of those substances, designated as first layer (1) and fifth layer (5), respectively, to provide multi-layer films and containers. The multi-layer films are produced which have excellent unsealing ability, transparency, mechanical resistance and heat resistance of sterilization and can prevent leakage of additives from the film into the liquids contained in the container. In a multi-layer film including first layer (1), second layer (2), third layer (3), fourth layer (4) and fifth layer (5) stacked in this order, the first layer (1) is composed of the copolymers of propylene random copolymers. The second (2) and fourth (4) layers shall each consist of a blend of randomly derived propylene-ethylene copolymers and an olefin elastomer. The third (3) layer shall consist of a blend of polycyclic olefins and prolyethylene. The fifth (5) layer shall consist of a blend of polypropylene homopolymers and randomly derived propylene-ethylene copolymers in a weight ratio of 90:10 to 10:90. The container shall be manufactured from a multi-layer film with an outer and an inner layer of those substances designated as the first (1) and fifth (5) layers respectively.

Claims (8)

Disclaimer (all) which will not appear on the announcement page: Revised 28 September 2017 1. Multi-layered film consisting of: first layer; 2nd floor provided on the first floor; 3rd floor provided on the 2nd floor; 4th floor provided on the third floor; And the 5th floor provided on the 4th floor; Where the first layer consists of a randomized copolymer of propylene-ethylene and / or polypropylene homopolymer; Layer 2 and Layer IV each layer comprising a mixture of randomly obtained copolymers of Propylene-ethylene And elastomers of (Sign) - olefin; The third layer consists of a mixture of polycyclolefin. And polyethylene; And the fifth layer is made up of mixtures containing polypropylene homopolymer And copolymers that It was obtained from a randomization of propylene-ethylene in the weight ratio of 90:10 to 10:90, where the copolymer obtained from a randomized propylene-ethylene The concentrates contained in layers 2 and 4 are randomly derived copolymer mixtures of propylene-ethylene with a melt flow rate of not less than. 0.5 g / 10 min and less than 5 g / 10 min as measured at 230 (symbol) C And the copolymer that It is obtained from a randomization of propylene-ethylene. The melt flow rate (g / 10 min.) Is not less than 5 g / 10 min and not more than 10 g / 10 min as measured at 230 (symbol) C ---------- EDIT 15/02/2016 1. Film with multiple layers that are composed: first layer; The second floor arranged on the first floor; The third floor provided on the second floor; The fourth floor arranged on the third floor; And the fifth floor arranged on the fourth floor; Where the first layer contains a randomized copolymer of propylene-ethylene and / or polypropylene homopolymer; The second and fourth layers each contain a mixture of random copolymers of Propylene-ethylene And Elastomers of? - Olifins; The third layer is made up of a mixture of polycycloolifins. And polyethylene; And the fifth layer is made up of a mixture with a polypropylene homopolymer. And that copolymer It was obtained from a randomization of propylene-ethylene in the weight ratio of 90:10 to 10:90, where the randomized copolymer of the propylene-ethylene contained. In the second tier And the fourth floor is Random mix of polymers of propylene-ethylene with melt flow rate. Not less than 0.5 g / 10 min and less than 5 g / 10 min as measured at 230 ° C and a randomized copolymer of propylene-ethylene. The melt flow rate (g / 10 min) of not less than 5 g / 10 min and not more than 10 g / 10 min as measured at 230? C 2. Multi-layer film as per claim. 1 where the third-layer mixtures contain 50 to 95% of polycyclolefin by weight of their total weight 3. Multi-layer film according to claim 1, where Second layer mix And the fourth floor has Elastomers of? -Olefins in the proportion of 30 to 60% by weight of the total weight of those substances. 4. Multi-layer films according to claim 1, where the thickness of the layer at 2. The thickness of the second layer is not less than 0.8 times the thickness of the fourth layer. 5. Multi-layer film according to claim 4, where the thickness of the second layer is not more than 1.2 times the thickness of the fourth layer. Layer according to claim 1, where the total thickness of the second and fourth layers is not less than 50% of the multi-layer film thickness. 7. The container is constructed of multi-layer films including First floor, second floor set on the first floor, third floor set on the second floor, fourth floor set on the third and fifth floor set on the fourth floor, Where the first layer consists of a randomized copolymer of propylene-ethylene and / or polypropylene homopolymer; The second and fourth layers each contain a mixture of randomly obtained copolymers of Propylene-ethylene And Elastomers of? - Olifins; The third layer consists of a mixture of polycyclolefin. And polyethylene; The fifth layer is made up of a mixture containing the homopolymer of polypropylene and the resulting copolymer. From the randomness of propylene-ethylene The weight ratio is 90:10 to 10:90. The first and fifth layers are the outer and inner layers of the container, respectively. Where a randomized, propylene-ethylene copolymer contained in the second layer And the fourth floor is A randomized mix of propylene-ethylene copolymer with the flow rate of the molten substance. Not less than 0.5 g / 10 min and less than 5 g / 10 min as measured at 230 ° C and a randomized propylene-ethylene copolymer. With the melt flow rate (grat / 10 min) not less than 5 g / 10 min and not more than 10 g / 10 min as measured at 230? C --------- ------------------------------- 1.Film with multiple layers Containing: the first floor; 2nd floor provided on the first floor; 3rd floor provided on the 2nd floor; 4th floor provided on the third floor; And the 5th floor provided on the 4th floor; In which the first floor consists of A randomized copolymer of propylene-ethylene and / or polypropylene homopolymer; Level 2 and Level 4 each containing Mixture of copolymer obtained from randomness of Propylene-ethylene And elastomers of (Formula) olefin; Level 3 consisting of A mixture of polycyclol olefin and polyethylene; And the fifth floor that consists of A mixture containing the homopolymer of polypropylene and the resulting copolymer. From the randomness of propylene-ethylene In the weight ratio is 90:10 to 10:90. 2.Film with multiple layers According to claim 1, where the mixture for the third layer will contain polycyclolines. Fin in proportion is 50 to 95% correct by weight relative to the total weight of those substances. 3.Film with multiple layers According to claim 1, where the ingredients for the 2nd and 4th layers contain an elastomer of (Formula) olefin In the correct proportion is 30 to 60% by weight relative to weight. All of those substances 4.Film with multiple layers According to claim 1, where a randomized propylene-ethylene copolymer contained in Layer 2 and Layer 4 is a mixture of the copolymer. Obtained from a sampling of propylene-ethylene with a molten flow rate of not less than 0.5 g / 10 min and less than 5 g / 10 min as measured at 230 ° C and Randomized polymers of propylene-ethylene with a melt flow rate (g / 10 min) not less than 5 g / 10 min and not more than 10 g / 10 minutes as measured at 230 ํ C 5.Multilayer film According to claim 1, where the thickness of the second layer is not less than 0.8 times the meaning of the 4th layer. 6. Film with multiple layers According to claim 5, where the thickness of layer 2 is not greater than 1.2 times the meaning of layer 4. 7.Multilayer film According to claim 1, where the total thickness of the 2nd and 4th layers is not less than 50% of the multi-layer film thickness. 8. Containers made of multi-layer film. Including the first floor, the second floor set on the first floor, the third floor set on the 2nd floor, the 4th floor set on the third and fifth floor set on the third floor. 4, where the first layer consists of A randomized copolymer of propylene-ethylene and / or polypropylene homopolymer; Level 2 and Level 4 each containing The mixture of copolymer T was obtained by randomization of Propylene-ethylene And elastomers of (Formula) olefin; Level 3 consisting of A mixture of polycyclol olefin and polyethylene; Level 5 consisting of A mixture containing the homopolymer of polypropylene and the resulting copolymer. From the randomness of propylene-ethylene In the weight ratio of 90:10 to 10:90, the first and fifth layers are arranged respectively as the outer layer and the inner layer of the container.