# US 2026/0098147 A1 · Polymer blend for the production of a bioriented polymer film > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0098147 A1 - Document ID: US20260098147A1 - Status: Published application - Kind: A1 - Application number: 19/116,081 - Filed: 2023-09-29 - Published: 2026-04-09 - Earliest claimed: 2022-09-30 - Assignees: Basell Polyolefine GmbH - Applicants: Basell Polyolefine GmbH - Inventors: Gianni Perdomi; Morica Galvan - Web page: https://patentgrep.com/patent/US20260098147A1 ## CPC - C08L 23/06: Polyethylene - C08J 5/18: Manufacture of films or sheets - B29C 55/14: successively - B29K 2023/06: {PE, i.e. polyethylene} - B29K 2995/0053: bi-axially - C08J 2323/06: Polyethene - C08J 2423/06: Polyethene - C08L 2201/10: Transparent films; Clear coatings; Transparent materials - C08L 2203/16: used for films - C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure - C08L 2205/03: containing three or more polymers in a blend - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS ## Abstract A polymer blend made from or containing: A) from 65 to 98 wt. % of a first polyethylene component, having a density from 0.948 to 0.960 g/cm3, a Melt Index MIF from 30 to 100 g/10 min, and a Melt Flow Ratio MIF/MIP from 15 to 30; and B) from 2 to 35 wt. % of a second polyethylene component, having a density from 0.910 to 0.945 g/cm3 and a Melt Index MIE of 0.1 to 3 g/10 min. ## Claims ### Claim 1 A polymer blend comprising: A) from 65 to 98 wt. % of a first polyethylene component, having a density from 0.948 to 0.960 g/cm3, a Melt Index MIF from 30 to 100 g/10 min, and a Melt Flow Ratio MIF/MIP from 15 to 30; and B) from 2 to 35 wt. % of a second polyethylene component, having a density from 0.910 to 0.945 g/cm3 and a Melt Index MIE from 0.1 to 3 g/10 min, the wt. % of the first polyethylene component and of second polyethylene component being with respect to the overall weight of the first polyethylene component and of second polyethylene component. ### Claim 2 (depends on 1) The polymer blend according to claim 1, wherein the first polyethylene component has a tensile modulus of at least 650 MPa. ### Claim 3 (depends on 1) The polymer blend according to claim 1, wherein the second polyethylene component has a tensile modulus of at least 100 MPa. ### Claim 4 (depends on 1) The polymer blend according to claim 1, wherein (i) the first polyethylene component has a Mw higher than 175000 g/mol and a Mw/Mn higher than 22 and (ii) the second polyethylene component has a Mw lower than 170000 g/mol and a Mw/Mn lower than 22. ### Claim 5 (depends on 1) The polymer blend according to claim 1, wherein (i) the first polyethylene component has a density of at least 0.950 g/cm3; and (ii) the second polyethylene component has a density of 0.915 to 0.940 g/cm3. ### Claim 6 (depends on 1) The polymer blend according to claim 1, wherein (i) the first polyethylene component has a Melt Index MIF of 45 to 80 g/10 min and (ii) the second polyethylene component having a Melt Index MIE of 0.6 to 2 g/10 min. ### Claim 7 (depends on 1) The polymer blend according to claim 1, comprising A) from 67 to 95 wt. % of the first polyethylene component, having a Melt Index MIP of 0.5 to 15 g/10 min; and B) from 5% to 33% wt. % of the second polyethylene component, the wt. % of the first polyethylene component and of second polyethylene component being with respect to the overall weight of the first polyethylene component and of second polyethylene component. ### Claim 8 (depends on 1) The polymer blend according to claim 1, comprising: from 65 to 98 wt. % of the first polyethylene component; from 2 to 33 wt. % of the second polyethylene component, having a tensile modulus of up to 350 MPa; and from 1 to 33 wt. % of a third polyethylene component, having a density from 0.920 to 0.950 g/cm3, a Melt Index MIE of 0.1 to 3 g/10 min, and a tensile modulus of at least 400 MPa; with the wt. % being with respect to the overall weight of the first polyethylene component, of the second polyethylene component, and the third polyethylene component. ### Claim 9 (depends on 1) The polymer blend according to claim 1, comprising: from 65 to 98 wt. % of the first polyethylene component; from 2 to 33 wt. % of the second polyethylene component, having a Mw lower than 130000 g/mol and a Mw/Mn lower than 10; from 1 to 33 wt. % of a third polyethylene component, having a density from 0.920 to 0.950 g/cm3, a Melt Index MIE of 0.1 to 3 g/10 min, a Mw lower than 170000 g/mol and higher than 135000, and a Mw/Mn lower than 22 and higher than 11; wherein the wt. % being with respect to the overall weight of the first polyethylene component, the second polyethylene component, and the third polyethylene component and the sum of the weights of the second polyethylene component and the third polyethylene component is from 3 to 35 wt. %, with respect to the overall weight of the first polyethylene component, the second polyethylene component, and the third polyethylene component. ### Claim 10 (depends on 8) The polymer blend according to claim 8, wherein the wt. % of the second polyethylene component is equal or higher than the wt. % of the third polyethylene component; and the wt. % of the third polyethylene component and of the second polyethylene component being with respect to the overall weight of the first polyethylene component, the second polyethylene component and the third polyethylene component. ### Claim 11 (canceled) ### Claim 12 (canceled) ### Claim 13 (depends on 1) A process for producing a bioriented polymer film comprising: a stretching step, during which a primary film of the polymer blend according to claim 1 is stretched in a first direction and a second direction crosswise to each other, thereby providing the bioriented polymer film. ### Claim 14 (depends on 13) The method according to claim 13, wherein the primary film has a thickness of at least 0.3 mm, and the bioriented polymer film has a thickness of less than 250 μm. ### Claim 15 (depends on 1) A bioriented polymer film comprising a polymer blend according to claim 1. ### Claim 16 (depends on 15) The bioriented polymer film according to claim 15, having a thickness of less than 250 μm.