Blown film containing a scavenger and method of making the same

Abstract

Provided herein is a blown film material comprising a base polymer and a scavenger capable of absorbing, interacting with, or reacting with odoriferous compounds, such as malodorous compounds, thereby reducing the odor caused by the odoriferous compounds. The resulting blown film material will have useful applications. Also provided herein are related methods of manufacture.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to U.S. Provisional Patent Application No. 63 / 622,791, filed January 19, 2024, entitled “Blown Film Containing a Cleaning Agent and Method for Preparation thereof,” the contents of which are incorporated herein by reference in their entirety, pursuant to 35 USC §119(e). Technical Field

[0003] This invention relates to blown films containing reagents for removing odorous compounds (such as malodorous compounds), and methods for preparing the same. Background Technology

[0004] There are many articles that are preferably stored, transported, and / or utilized in environments where control and / or regulation are necessary. For example, containers and / or packaging capable of removing odorous / malodorous compounds trapped therein have been recognized as desirable. Control of gaseous substances (including, but not limited to, odorous / malodorous compounds) may be desirable in medical, diagnostic, industrial chemical, laboratory, electronic, and food packaging applications.

[0005] Conventionally, desiccants, oxygen absorbers, and other surfactants in their original form, such as loose granules contained in pouches or cans, are used within packaging to control the internal environment of the packaging. For many applications, such loosely stored active substances are undesirable. To address this issue, the agents of this application have developed active entrained polymers comprising surfactants, wherein such polymers can be extruded and / or molded into desired forms, such as container liners, stoppers, film sheets, granules, and other such substances. Optionally, such active entrained polymers may include a channel-forming agent, such as polyethylene glycol (PEG), that forms a channel between the surface of the entrained polymer and its interior to transport selected materials (e.g., odorous or malodorous compounds) to the entrained surfactant (e.g., an agent for removing the odorous or malodorous compound).

[0006] Entrained polymers can be two-phase formulations (i.e., containing a base polymer and an surfactant but no channel forming agent) or three-phase formulations (i.e., containing a base polymer, an surfactant, and a channel forming agent). Three-phase entrained polymers and methods for their preparation are described, for example, in U.S. Patent Nos. 5,911,937, 6,080,350, 6,124,006, 6,130,263, 6,194,079, 6,214,255, 6,486,231, 7,005,459, and U.S. Patent Publication No. 2016 / 0039955, each of which is incorporated herein by reference as fully illustrated. These entrained polymers have been conventionally prepared as extruded products (e.g., pellets or films) or injection-molded parts (e.g., disc-shaped sheets, inserts, or liners within containers).

[0007] Film blowing technology enables the production of useful products, including sheets, films, cylinders, and tubes. This technology is particularly valuable for manufacturing bags and packaging for consumer goods. In short, the process involves softening and melting a polymer resin, then blowing the material to create a film that encloses air bubbles. Importantly, the film formed in this blowing process can be quite thin, typically on the order of 10 mils or less.

[0008] Although the process is conceptually simple, the polymer material must meet certain requirements to be suitable for use. Properties such as melting point and melt flow index will affect the success of this blown film process in forming materials with suitable properties.

[0009] There remains a need for blown film materials capable of removing odorous or foul-smelling compounds from gaseous volumes. Numerous applications can be envisioned for such materials, including, but not limited to, incorporation into packaging for storing foods and other products susceptible to sensory impairment. Summary of the Invention

[0010] Therefore, in one aspect, a blown film material is provided, comprising a base polymer and an active agent for removing one or more odorous compounds, including malodorous compounds, preferably a particulate or mineral-based active agent.

[0011] In some embodiments, the base polymer is selected from polyolefins and polyesters. In some embodiments, the base polymer includes both polyolefins and polyesters. In some embodiments, the base polymer includes block copolymers.

[0012] In some embodiments, the surfactant is an odor eliminator. In some embodiments, the odor eliminator is a malodor eliminator. In some embodiments, the odor eliminator is selected from silica gel, zeolite, and molecular sieve.

[0013] In some embodiments, the blown film material further includes a channel forming agent. In some embodiments, the channel forming agent is selected from polyglycol, glycerol polyamine, polyurethane, and polycarboxylic acid, or any combination thereof. In some embodiments, the channel forming agent is a water-insoluble polymer. In some embodiments, the channel forming agent is selected from propylene oxide polymer, propylene oxide polymer-monobutyl ether, ethylene vinyl acetate (EVA), nylon, or any combination thereof.

[0014] This article also provides a method for manufacturing a blown film material comprising a base polymer and an active agent for removing one or more odorous compounds, including malodorous compounds, the method comprising the following steps:

[0015] A suitable precursor material containing a molten mixture of polymer and odor remover is extruded in a screw extruder while being heated to form a heated material;

[0016] The heated material is passed through a tubular die.

[0017] The heated material is expanded and stretched under positive pressure to form an expanded and stretched material; and

[0018] This allows the expanded and stretched material to cool. Attached Figure Description

[0019] A full understanding of the invention can be obtained from the following description of preferred embodiments when read in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 This is a perspective view of a plug formed by an entrained polymer that can be deposited on a substrate according to a method based on the disclosed concept;

[0021] Figure 2 It is along Figure 1 The cross section taken from line 2-2;

[0022] Figure 3 Is with Figure 2 A similar cross-sectional view shows a plug formed from another embodiment of an entrained polymer according to an optional embodiment of the disclosed concept;

[0023] Figure 4 This is a schematic diagram of an entrained polymer according to an optional embodiment of the disclosed concept, wherein the activator is an odor remover;

[0024] Figure 5 It is a cross-sectional view of a sheet or film formed from an entrained polymer according to an optional embodiment of the disclosed concept, said sheet or film being adhered to a barrier sheet substrate;

[0025] Figure 6It is a cross-section of a package formed using an encapsulated polymer, according to an optional embodiment of the disclosed concept; and

[0026] Figure 7 This is a schematic diagram depicting representative equipment and related processes used to form blown film materials. Detailed Implementation

[0027] In one aspect, this article provides a blown film material comprising a base polymer and an odor remover.

[0028] In some embodiments, the base polymer is selected from polyolefins, polyamides, and polyesters. In some embodiments, the base polymer is selected from polyolefins and polyesters. In some embodiments, the base polymer is selected from polyethylene, polypropylene, polyethylene / polypropylene copolymers, and poly(lactic acid).

[0029] In some embodiments, the base polymer has the formula (-CHR-X-). n Where -X- is selected from -CH2-, -COO-, and -CONH-, and R is selected from H and nC. 1-10 Alkyl group. The subscript "n" indicates the number of monomer units in the polymer, which is unrestricted.

[0030] In some embodiments, the base polymer includes at least one block copolymer.

[0031] In some embodiments, the base polymer comprises a block copolymer containing blocks of ester monomers. In some further embodiments, the base polymer comprises a block copolymer containing blocks of poly(alkylene terephthalate) ester monomers. In some further embodiments, the alkylene group is selected from ethylene, propylene, and butylene.

[0032] In some embodiments, the base polymer comprises a block copolymer containing blocks of polyether glycol.

[0033] In some embodiments, the base polymer comprises a copolyether-ester composition, which is substantially composed of long-chain ester units having Formula I:

[0034] –OGO–C(=O)–R–C(=O)–(I)

[0035] and short-chain ester units of formula II:

[0036] –ODO–C(=O)–R–C(=O)–(II)

[0037] These units are composed of ester bonds that connect them head-to-tail;

[0038] Wherein G is a divalent group corresponding to the removal of a hydroxyl group from a poly(epoxy) glycol with a molecular weight between 400 and 6000 amu (inclusive), optionally between 400 and 4000 amu (inclusive), and D is a divalent group corresponding to the removal of a hydroxyl group from a glycol with a molecular weight less than 250 amu, and R is a divalent group corresponding to the removal of a carboxyl group from a dicarboxylic acid with a molecular weight less than about 300.

[0039] In some embodiments, short-chain ester units account for 45% to 65% (including end values) of the weight of the copolyether-ester composition.

[0040] In some embodiments, the poly(epoxide) glycol is poly(trimethylene oxide) glycol. In some embodiments, the poly(epoxide) glycol is poly(tetramethylene oxide) glycol.

[0041] In some embodiments, the diol is 1,3-propanediol. In some embodiments, the diol consists of at least 70% 1,4-butanediol. In some embodiments, the diol is 1,4-butanediol.

[0042] In some embodiments, the dicarboxylic acid is phthalic acid. In some embodiments, the dicarboxylic acid consists of at least 70% terephthalic acid. In some embodiments, the dicarboxylic acid is terephthalic acid.

[0043] In some embodiments, the base polymer further comprises poly(butylene terephthalate).

[0044] In some embodiments, the base polymer comprises a block copolymer containing both ester monomer blocks and polyether glycol blocks. In some embodiments, the base polymer comprises a HYTREL® block copolymer. In some embodiments, the base polymer comprises HYTREL® 7246.

[0045] In some embodiments, the base polymer comprises a block copolymer having a concentration of 1.1 to 1.4 g / cm³. 3 Between (including extreme values), optionally between 1.2 and 1.3 g / cm³ 3 Between (including extreme values), optionally between 1.24 and 1.28 g / cm³ 3 (Including end values), approximately 1.26 g / cm³ (optional) 3 The density.

[0046] In some embodiments, the base polymer comprises a block copolymer having a melt mass flow rate (2.16 kg and 100°C; ISO 1133) between 10 g / 10 min and 16 g / 10 min (inclusive), optionally between 11 g / 10 min and 15 g / 10 min (inclusive), optionally between 12 g / 10 min and 14 g / 10 min (inclusive), and optionally about 13 g / 10 min.

[0047] In some embodiments, the base polymer comprises a block copolymer having a density of 8 cm⁻¹ 3 / 10min to 16 cm 3 Between 10 min (inclusive), optionally at 10 cm 3 / 10 min to 14 cm 3 Between 10 min (inclusive), optionally at 11 cm 3 / 10 min to 13 cm 3 Between 10 min (including endpoints), at an arbitrary distance of approximately 12 cm 3 Melt volumetric flow rate per 10 min (2.16 kg and 100 °C; ISO 1133).

[0048] In some embodiments, the base polymer comprises a block copolymer having a nominal fracture strain (IO 527-1 / -2) between 500% and 560% (inclusive of end values), optionally between 510% and 550% (inclusive of end values), optionally between 520% ​​and 540% (inclusive of end values), and optionally about 530%.

[0049] In some embodiments, the base polymer comprises a block copolymer having a flexural modulus (ISO 178, 23°C) between 500 MPa and 600 MPa (inclusive), optionally between 520 MPa and 580 MPa (inclusive), optionally between 530 MPa and 570 MPa (inclusive), optionally between 540 MPa and 560 MPa (inclusive), and optionally about 550 MPa.

[0050] In some embodiments, the base polymer comprises an ethylene / α-olefin copolymer. In some further embodiments, the α-olefin is selected from: propylene; 1-butene; 1-pentene; 1-pentene having one or more methyl, ethyl, or propyl substituents; 1-hexene; 1-hexene having one or more methyl, ethyl, or propyl substituents; 1-heptene; 1-heptene having one or more methyl, ethyl, or propyl substituents; 1-octene; 1-octene having one or more methyl, ethyl, or propyl substituents; 1-nonene; 1-nonene having one or more methyl, ethyl, or propyl substituents; 1-decene substituted with ethyl, methyl, or dimethyl; 1-dodecene; and styrene. In some further embodiments, the α-olefin is selected from propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, and 1-dodecene.

[0051] In some embodiments, the base polymer includes ethylene-derived and one or more C3-C polymers. 20 (C3-C optional) 12 A copolymer of α-olefin comonomers. In some embodiments, the copolymer consists of 5% to 15% by mass of comonomers (inclusive). In some embodiments, the molecular weight distribution M... w / M n Between 2 and 3 (inclusive). In some embodiments, the molecular weight distribution M... z / M w Less than 2 (including the end value). In some embodiments, the density of the copolymer is less than 0.916 g / cm³. 3 .

[0052] In some embodiments, the base polymer comprises a metallocene polyolefin. In some embodiments, the base polymer comprises VLDPE.

[0053] In some embodiments, the base polymer comprises a polyolefin having a concentration of 0.880 to 0.920 g / cm³. 3 Between (inclusive) and optionally between 0.890 and 0.910 g / cm³ 3 Between (inclusive) and optionally between 0.895 and 0.905 g / cm³ 3 Between (including endpoints), optionally approximately 0.90 g / cm³ 3 The density.

[0054] In some embodiments, the base polymer comprises a polyolefin having a melt flow index (ASTM D1238) between 14 and 20 g / 10 min (inclusive), optionally between 15 and 19 g / 10 min (inclusive), optionally between 16 and 18 g / 10 min (inclusive), and optionally about 17 g / 10 min.

[0055] In some embodiments, the base polymer comprises a polyolefin having a tensile yield strength (MD, ASTM D882) between 4.9 and 5.5 MPa (inclusive), optionally between 5.0 and 5.4 MPa (inclusive), optionally between 5.1 and 5.3 MPa (inclusive), optionally between 5.15 and 5.25 MPa (inclusive), and optionally about 5.17 MPa.

[0056] In some embodiments, the base polymer comprises a polyolefin having a tensile yield strength (TD, ASTM D882) between 4.3 and 4.8 MPa (inclusive), optionally between 4.4 and 4.7 MPa (inclusive), optionally between 4.45 and 4.65 MPa (inclusive), optionally between 4.5 and 4.6 MPa (inclusive), and optionally about 4.55 MPa.

[0057] In some embodiments, the base polymer comprises a polyolefin having an elongation at break (MD, ASTM D882) between 580% and 640% (inclusive), optionally between 590% and 630% (inclusive), optionally between 600% and 620% (inclusive), and optionally about 610%.

[0058] In some embodiments, the base polymer comprises a polyolefin having an elongation at break (TD, ASTM D882) between 740% and 800% (inclusive), optionally between 750% and 790% (inclusive), optionally between 760% and 780% (inclusive), and optionally about 770%.

[0059] In some embodiments, the base polymer comprises a polyolefin having a secant modulus (MD, ASTM D882) between 0.067 GPa and 0.070 GPa (inclusive), optionally between 0.0683 GPa and 0.0693 GPa (inclusive), optionally between 0.0686 GPa and 0.0692 GPa (inclusive), optionally between 0.0688 GPa and 0.0690 GPa (inclusive), and optionally about 0.0689 GPa.

[0060] In some embodiments, the base polymer comprises a polyolefin having a secant modulus (TD, ASTM D882) between 0.750 GPa and 0.765 GPa (inclusive), optionally between 0.755 GPa and 0.761 GPa (inclusive), optionally between 0.756 GPa and 0.760 GPa (inclusive), optionally between 0.757 GPa and 0.759 GPa, and optionally about 0.758 GPa.

[0061] In some embodiments, the base polymer comprises a polyolefin having an Elmandorf tear strength (MD, ASTM D1922) of between 300 g and 360 g (inclusive), optionally between 310 g and 350 g (inclusive), optionally between 320 g and 340 g (inclusive), and optionally about 330 g.

[0062] In some embodiments, the base polymer comprises a polyolefin having an Elmandorf tear strength (TD, ASTM D1922) of between 500 g and 360 g (inclusive), optionally between 510 g and 550 g (inclusive), optionally between 520 g and 540 g (inclusive), and optionally about 530 g.

[0063] In some embodiments, the base polymer comprises a polyolefin having a peak melt temperature between 92°C and 98°C (inclusive), optionally between 93°C and 97°C (inclusive), optionally between 94°C and 96°C (inclusive), and optionally about 95°C.

[0064] In some embodiments, the base polymer comprises a polyolefin having a haze (ASTM D1003) between 0.20% and 0.40% (inclusive), optionally between 0.25% and 0.35% (inclusive), optionally between 0.28% and 0.32% (inclusive), and optionally about 0.30%.

[0065] In some embodiments, the base polymer comprises a polyolefin having a gloss level (ASTM D2457) between 90% and 96% (inclusive), optionally between 91% and 95% (inclusive), optionally between 92% and 94% (inclusive), and optionally about 93%.

[0066] In some embodiments, the base polymer comprises two block copolymers. In some further embodiments, one of the two block copolymers is an ethylene / α-olefin copolymer as disclosed herein. In some further embodiments, the base polymer comprises EXACTTM 3040. In some further embodiments, one of the two block copolymers is a block copolymer as disclosed herein, comprising both ester monomer blocks and polyether glycol blocks. In some further embodiments, the base polymer includes HYTREL® 7246. In some further embodiments, the base polymer includes EXACT. TM Both 3040 and HYTREL® 7246. In some further embodiments, the base polymer is made from EXACT. TM Composed of a mixture of 3040 and HYTREL® 7246.

[0067] In some embodiments, the base polymer comprises both polyolefins and polyesters. In some embodiments, the polyolefin comprises 10% to 40% of the total composition by weight, optionally between 15% and 30%. In some embodiments, the polyester comprises 20% to 80% of the total composition by weight, optionally between 25% and 70%, optionally between 30% and 60%. In some embodiments, the polyolefin has the formula (-CH2CHR-). n And R is selected from H and nC 1-10 Alkyl group. In some embodiments, the polyester has the formula ((-CH2) m COO-) n And m is selected from 1, 2, 3, 4, and 5. In some embodiments, the polyester has the formula (-CHRCOO-). n And R is selected from H and nC 1-10 Alkyl group. The subscript "n" indicates the number of monomer units in the polyolefin or polyester, which is unrestricted.

[0068] In some embodiments, the surfactant is an odor eliminator. In some embodiments, the odor eliminator is a malodor eliminator. In some embodiments, the odor eliminator is selected from silica gel, zeolite, and molecular sieves. In some embodiments, the odor eliminator does not contain metal oxides. In some embodiments, the odor eliminator does not contain metal carbonates. In some embodiments, the odor eliminator does not contain metal halides. In some embodiments, the odor eliminator contains an acid. In some embodiments, the odor eliminator contains a base.

[0069] In some embodiments, the zeolite is an MFI type zeolite. In some embodiments, the zeolite is ZSM-5 zeolite. In some embodiments, the zeolite is a hydrophobic zeolite. In some embodiments, the zeolite is a high-silica zeolite. In some embodiments, the Si / Al ratio is 8 or higher, optionally 9 or higher, optionally 10 or higher, optionally 20 or higher, optionally 50 or higher, optionally 100 or higher. In some embodiments, the zeolite is Zeoflar zeolite. In some embodiments, the zeolite is selected from Zeoflar 100 and Zeoflar 110.

[0070] In some embodiments, the zeolite is BLANOVA zeolite. In some embodiments, the zeolite is selected from BLANOVA DS911 and BLANOVA DS 912.

[0071] In any embodiment, the activator is preferably a microparticle, particulate, and / or mineral-based material, and optionally constitutes at least 35% to 70%, optionally 40% to 60%, or optionally 45% to 55% of the total weight of the entrained polymer.

[0072] In some embodiments, the blown film material further includes a channel forming agent. In some embodiments, the channel forming agent is selected from polyethylene glycols, such as polyethylene glycol (PEG), ethylene-vinyl alcohol (EVOH), polyvinyl alcohol (PVOH), glycerol polyamine, polyurethane, and polycarboxylic acids including polyacrylic acid or polymethacrylic acid.

[0073] In some embodiments, the channel forming agent is a water-insoluble polymer, such as a propylene oxide polymerized monobutyl ether, such as Polyglykol B01 / 240, manufactured by Clariant. In other embodiments, the channel forming agent may be a propylene oxide polymerized monobutyl ether, such as Polyglykol B01 / 20, manufactured by Clariant; a propylene oxide polymerized product, such as Polyglykol D01 / 240, manufactured by Clariant; ethylene vinyl acetate (EVA); nylon 6; nylon 66; or any combination thereof.

[0074] In some embodiments, the base polymer has a composition selected from (-CH2CHR-). n and (-CHRCOO-) n The formula, where R is selected from H and nC. 1-10 Alkyl group. The subscript "n" indicates the number of monomer units in the polyester and is not limited. In some embodiments, R is selected from H and nC. 1-10 Alkyl group. In some embodiments, R is selected from H, CH3, C2H5, n-C4H. 9、 n-C6H 13 and n-C8H 17 In some embodiments, R is selected from C2H5, n-C4H9, and n-C6H. 13 .

[0075] This document also provides a method for manufacturing a blown film material as disclosed herein for removing one or more odorous compounds, including malodorous compounds, the method comprising the following steps:

[0076] A suitable precursor material containing a molten mixture of polymer and odor remover is extruded in a screw extruder while being heated to form a heated material;

[0077] The heated material is passed through a tubular die.

[0078] The heated material is expanded and stretched under positive pressure to form an expanded and stretched material; and

[0079] This allows the expanded and stretched material to cool.

[0080] In some embodiments, extrusion is performed at temperatures between 140°C and 190°C, optionally between 145°C and 175°C, optionally between 150°C and 170°C, and optionally between 150°C and 165°C. As used herein, the term "between" includes the endpoints of the numerical range.

[0081] In some embodiments, extrusion is performed at a rotational speed of 5 rpm or greater, optionally 10 rpm or greater, optionally 15 rpm or greater, optionally 25 rpm or greater, optionally 35 rpm or greater, optionally 45 rpm or greater, optionally 55 rpm or greater.

[0082] In some embodiments, extrusion is performed at a rotational speed of 65 rpm or less, optionally 55 rpm or less, optionally 45 rpm or less, optionally 35 rpm or less, optionally 30 rpm or less, optionally 25 rpm or less, optionally 20 rpm or less.

[0083] In some embodiments, extrusion is performed at a rotational speed between 10 rpm and 75 rpm, optionally between 15 rpm and 65 rpm, optionally between 15 rpm and 60 rpm, optionally between 20 rpm and 50 rpm.

[0084] In some embodiments, extrusion is performed at a rotational speed between 5 rpm and 35 rpm, optionally between 10 rpm and 30 rpm, optionally between 10 rpm and 25 rpm, optionally between 10 rpm and 20 rpm.

[0085] In some embodiments, the tensile strength of the blown film material differs significantly from that of the equivalent cast film material. In some embodiments, the tensile strength of the blown film material is significantly greater than that of the equivalent cast film material.

[0086] In some embodiments, the dart impact strength of the blown film material differs significantly from that of the equivalent cast film material. In some embodiments, the dart impact strength of the blown film material is significantly greater than that of the equivalent cast film material.

[0087] In some embodiments, the transparency of the blown film material differs significantly from that of the equivalent cast film material. In some embodiments, the transparency of the blown film material is significantly greater than that of the equivalent cast film material.

[0088] In some embodiments, the haze of the blown film material differs significantly from that of the equivalent cast film material. In some embodiments, the haze of the blown film material is significantly greater than that of the equivalent cast film material.

[0089] In some embodiments, the brittleness of blown film materials differs significantly from that of equivalent cast film materials. In some embodiments, the brittleness of blown film materials is significantly less than that of equivalent cast film materials.

[0090] In some embodiments, the density of the blown film material differs significantly from the density of the equivalent cast film material. In some embodiments, the density of the blown film material is significantly greater than the density of the equivalent cast film material. In some embodiments, the density of the blown film material is significantly less than the density of the equivalent cast film material.

[0091] In some embodiments, the tensile strength of the blown film material in the longitudinal and / or transverse directions differs significantly from that of the equivalent cast film material. In some embodiments, the tensile strength of the blown film material in the longitudinal and / or transverse directions is significantly greater than that of the equivalent cast film material.

[0092] In some embodiments, the elongation of the blown film material in the longitudinal and / or transverse directions differs significantly from that of the equivalent cast film material. In some embodiments, the elongation of the blown film material in the longitudinal and / or transverse directions is significantly greater than that of the equivalent cast film material.

[0093] In some embodiments, the Young's modulus of the blown film material differs significantly from that of the equivalent cast film material in the longitudinal and / or transverse directions. In some embodiments, the Young's modulus of the blown film material is significantly greater than that of the equivalent cast film material in the longitudinal and / or transverse directions.

[0094] Without intending to be bound by any particular theory, the inventors have discovered that the chosen method for producing the membrane material or the manner in which the membrane material is manufactured affects the properties and / or characteristics of the resulting membrane material itself. As noted above, the method of blowing membrane material produces blown film materials that have different / distinguishable (e.g., advantageous) properties and characteristics (e.g., tensile strength, dart impact, transparency, haze, brittleness, density, elongation, and Young's modulus) from equivalent membrane material compositions produced by casting extrusion methods.

[0095] Unless otherwise stated, a difference of 10% or more in the physical properties between blown film and cast film will constitute a significant difference. Those skilled in the art will understand that some physical properties exhibit small deviations from the average. For these physical properties, a difference of less than 10% can be appropriately interpreted as a significant difference.

[0096] For comparison, suitable cast films can be prepared using methods known in the art. A polymer resin is melted and homogenized, and the resulting melt is pumped through a suitable slit die to form a flat film, which is then cast onto cooling rollers. After curing, the film is subsequently drawn on a series of rollers to provide a cast film with the same thickness as that obtained using a blown film process.

[0097] Preferably, all parameters used to form the film will be the same for both the blown film process and the cast film process, except for those parameters that are unique to only one process, including but not limited to the details of the bubble inflation for the blown film process and the details of the drawing step for the cast film process. Otherwise, the parameters will be kept as similar as possible. In some limited cases, it may be necessary to change the parameters due to the inherent differences between the two processes.

[0098] Some of the blown films disclosed herein may not be obtainable using cast film processes. More specifically, materials obtainable using blown film processes may not be obtainable using cast extrusion processes without causing significant differences in physical properties.

[0099] One or more of the above physical properties can be compared between blown film and cast film. Blown film processes require bubble formation, and not all polymer resins are suitable for bubble formation. Therefore, not all cast films can be obtained by blown film methods. Conversely, cast film processes do not require bubble formation, and this process is generally easier to achieve than the corresponding blown film processes. However, as those skilled in the art will understand, cast film processes often cannot successfully produce films as thin as those achievable by blown film processes.

[0100] It will be further understood that some of the physical properties described above will differ for blown and extruded films. Orientation properties are typically significantly different for blown and extruded films because the bubble inflation process can affect the lateral alignment. A similar effect is generally not present for extruded films. Other properties derived from orientation may differ between blown and extruded films.

[0101] This document also provides a container comprising a blown film encapsulated polymer as disclosed herein and an internal space suitable for product storage. Such products may include, for example, food, pharmaceuticals, medical devices, or drug delivery devices. In some embodiments, the container includes at least one article of material comprising the blown film encapsulated polymer as disclosed herein, located within the internal space. In some embodiments, including the product within the container creates a top space formed by the internal space not occupied by the product. In some embodiments, the container includes a bottom surface, a top opening, and one or more sidewalls extending vertically from the bottom surface to the top opening. In some embodiments, the container further includes a lid for closing and / or sealing the container.

[0102] This article also provides a method for reducing or eliminating odors caused by a product, the method comprising storing the product in a container as disclosed herein.

[0103] definition

[0104] As used herein, the term "active" is defined as the ability to act on, interact with, or react with a selected or target material (e.g., an odorous compound, such as a malodorous compound) according to the invention. Examples of such actions or interactions may include the absorption, adsorption, or release of the selected material.

[0105] As used herein, the term "activator" is defined as a material that: (1) is immiscible with the base polymer and will not melt when mixed with the base polymer and the channel forming agent and heated, i.e., has a melting point higher than that of the base polymer or the channel forming agent; and (2) acts on, interacts with, or reacts with the selected material. The term "activator" may include, but is not limited to, materials that absorb, adsorb, or release the selected material. Activators according to the invention may be in particulate form, preferably minerals, but the invention should not generally be considered limited to particulate activators (unless otherwise stated in the corresponding claims).

[0106] As used herein, the term "odor remover" refers to an active agent capable of reducing the concentration of odorous compounds in a gaseous environment. Odor removers can adsorb or absorb odorous compounds from the gaseous environment. Alternatively, odor removers can chemically react with malodorous compounds. In some embodiments, the odorous compound becomes less volatile after reacting with the odor remover, thus dispersing less into the gaseous environment. In some embodiments, the odor of the odorous compound may become less noticeable or less unpleasant after reacting with the odor remover.

[0107] The term "odor remover" may be used in this document to refer to odor removers that can reduce the concentration of odorous compounds in a gaseous environment.

[0108] As used herein, the term "alkyl" refers to an acyclic group consisting only of carbon and hydrogen. Alkyl groups can be saturated or unsaturated. Alkyl groups can be unbranched or branched. Unbranched alkyl groups may be referred to as "n-alkyl" groups and may be indicated by the prefix "n". Therefore, the term "nC"... 1-10 "Alkyl" refers to a non-branched alkyl group having at least one carbon atom and at most ten carbon atoms.

[0109] As used herein, the term "polyolefin" refers to a polyolefin having the formula (-CH2CHR-). n The polymer wherein R is selected from H, alkyl, chlorine, aryl, hydroxyl, acyloxy, acetoxy, carboxyl, and alkoxycarbonyl. In some embodiments, R is selected from H, alkyl, and phenyl. In some embodiments, R is selected from H and C. 1-10 Alkyl group. In some embodiments, R is selected from H and nC. 1-10 Alkyl group. In some embodiments, R is selected from H and CH3. In some embodiments, the polyolefin is selected from polyethylene, low-density polyethylene (“LDPE”), linear low-density polyethylene (LLDPE), very low-density polyethylene (VLDPE), ultra-low-density polyethylene (ULDPE), and medium-density polyethylene (MDPE).

[0110] As used herein, the term "polyester" refers to a product having the formula (-X-COO-). n The polymer, wherein X is a divalent organic moiety. In some embodiments, the polyester has the formula (-CHRCOO-). n R is selected from H and nC 1-10 Alkyl group. In some embodiments, the polyester has the formula ((-CH2) m COO-) n , where m is selected from 1, 2, 3, 4, and 5. In some embodiments, the polyester has the formula (-OOC-Y-COO-Z). nIn this embodiment, both Y and Z are divalent organic moieties. In some embodiments, Y = 1,4-phenylene. In some embodiments, Z is selected from ethylene, butylene (tetramethylene), hexane (hexamethylene), and 1,4-cyclohexene-dimethylene. In some embodiments, the polyester is polyethylene terephthalate (“PET”). In some embodiments, the polyester is poly-1,4-cyclohexene-dimethyl terephthalate (“PCDT”).

[0111] As used herein, the term "base polymer" refers to a polymer that optionally has a gas permeability of the selected material that is substantially lower than, lower than, or substantially equivalent to the gas permeability of the channel forming agent. For example, in an embodiment where the selected material is an odorous compound (such as a malodorous compound) and the active agent is a scavenger for the odorous / malodorous compound, such permeability would be water vapor permeability. The primary function of the base polymer is to provide the structure for entraining the polymer. Suitable base polymers may comprise thermoplastic polymers, such as polyolefins (such as polypropylene and polyethylene), polyisoprene, polybutadiene, polybutene, polysiloxanes, polycarbonates, polyamides, ethylene-vinyl acetate copolymers, ethylene-methacrylate copolymers, poly(vinyl chloride), polystyrene, polyesters, polyanhydrides, polyacrylonitrile, polysulfone, polyacrylates, acrylic acid, polyurethanes, and polyacetals, or copolymers or mixtures thereof.

[0112] Referring to such a comparison of the water vapor transmission rates of the base polymer and the channel forming agent, in one embodiment, the water vapor transmission rate of the channel forming agent is at least twice that of the base polymer. In another embodiment, the water vapor transmission rate of the channel forming agent is at least five times that of the base polymer. In another embodiment, the water vapor transmission rate of the channel forming agent is at least ten times that of the base polymer. In yet another embodiment, the water vapor transmission rate of the channel forming agent is at least twenty times that of the base polymer. In yet another embodiment, the water vapor transmission rate of the channel forming agent is at least fifty times that of the base polymer. In yet another embodiment, the water vapor transmission rate of the channel forming agent is at least one hundred times that of the base polymer.

[0113] As used herein, the term "channel forming agent" or "multiple channel forming agents" is defined as a material that is immiscible with a base polymer and has an affinity for transporting gaseous substances at a faster rate than the base polymer. Optionally, when formed by mixing the channel forming agent with a base polymer, the channel forming agent is able to form channels through the entrained polymer. Optionally, such channels are able to transport selected materials through the entrained polymer at a rate only faster than in the base polymer.

[0114] As used herein, the term “channel” or “interconnected channel” is defined as a pathway formed by a channel-forming agent that penetrates a base polymer and can interconnect with each other.

[0115] As used herein, the term "entrained polymer" is defined as a monolithic material formed together with at least a base polymer, an active agent, and optionally, an entrained or integrally distributed channel-forming agent. Entrained polymers thus encompass both two-phase and three-phase polymers. "Mineral-loaded polymers" are a type of entrained polymer in which the active agent is in the form of a mineral, such as mineral particles, like molecular sieves, zeolites, or silica gel.

[0116] As used herein, the terms “integral,” “integral structure,” or “integral composition” are defined as compositions or materials that are not composed of two or more discrete macroscopic layers or portions. Therefore, “integral composition” does not include multilayer composites (although it may be a part of a multilayer composite).

[0117] As used herein, the term "phase" is defined as a portion or component of a structure or composition that is uniformly distributed throughout to provide its overall properties to the structure or composition.

[0118] As used herein, the term "selected material" is defined as a material that is targeted by, acts through, or interacts with or reacts with an active agent and is capable of being transported through channels that entrain polymers. For example, in embodiments where an odor eliminator (such as a malodor eliminator) is used as an active agent, the selected material may be an odorous compound, such as a malodor compound, that can be absorbed by, interact with, or react with the odor eliminator.

[0119] As used herein, the term "triphase" is defined as an integral composition or structure comprising three or more phases. An example of a triphase composition according to the invention would be an entrained polymer formed from a base polymer, an surfactant, and a channel forming agent. Optionally, the triphase composition or structure may include an additional phase, such as a colorant (therefore, "triphase" means at least three phases, including the base polymer, the surfactant, and the channel forming agent).

[0120] Suitable channel forming agents may include polyethylene glycols such as polyethylene glycol (PEG), ethylene-vinyl alcohol (EVOH), polyvinyl alcohol (PVOH), glycerol polyamines, polyurethanes, and polycarboxylic acids comprising polyacrylic acid or polymethacrylic acid. Alternatively, channel forming agent 35 may be, for example, a water-insoluble polymer, such as a propylene oxide polymer-monobutyl ether manufactured by Clariant, such as Polyglykol B01 / 240. In other embodiments, the channel forming agent may be a propylene oxide polymer-monobutyl ether such as Polyglykol B01 / 20 manufactured by Clariant, a propylene oxide polymer such as Polyglykol D01 / 240 manufactured by Clariant, ethylene vinyl acetate (EVA), nylon 6, nylon 66, or any combination thereof.

[0121] Any suitable odor remover can be used for a given application. In some embodiments, a physical adsorption remover may be preferred. These physical adsorption removers may include molecular sieves, zeolites, silica gel, clay, and starch. Alternatively, the odor remover may be a chemical compound that reacts with an odor-causing compound. In some embodiments, the odor remover contains an acid. In some embodiments, the odor remover contains a base. In some embodiments, the reaction is an acid / base reaction.

[0122] In some embodiments, the base polymer comprises 10% to 90% by weight of the total composition, optionally 20% to 80% by weight, optionally 30% to 70% by weight, and optionally 40% to 60% by weight.

[0123] In some embodiments, the base polymer comprises 20% to 90% by weight, optionally 30% to 80% by weight, optionally 40% to 70% by weight, and optionally 50% to 60% by weight of the total composition.

[0124] In some embodiments, the base polymer comprises 30% to 90% by weight, optionally 40% to 80% by weight, and optionally 50% to 70% by weight of the total composition.

[0125] When an optional channel forming agent is used, the channel forming agent may be provided in the range of 1% to 15% by weight, optionally 2% to 12% by weight, optionally about 5% by weight.

[0126] It is believed that the higher the concentration of surfactant in the mixture, the greater the absorption, adsorption, reaction, or release capacity (depending on the case) of the final composition. However, excessively high surfactant concentrations may result in more brittle entrained polymers, and the molten mixture of surfactant, base polymer, and channel forming agent may be more difficult to thermoform, extrude, or successfully form bubbles in blown film production processes.

[0127] In some embodiments, the surfactant loading level may be in the range of 10% to 80%, optionally 35% to 70%, optionally 40% to 60%, or optionally 45% to 55% of the total weight of the entrained polymer.

[0128] In some embodiments, the surfactant loading level may be in the range of 10% to 70%, optionally 30% to 60%, or optionally 35% to 50% of the total weight of the entrained polymer.

[0129] In some embodiments, the surfactant loading level may be in the range of 10% to 60%, optionally 20% to 50%, or optionally 25% to 45% of the total weight of the entrained polymer.

[0130] In some embodiments, the surfactant loading level may be in the range of 10% to 50%, optionally 15% to 45%, optionally 20% to 40%, or optionally 25% to 35% of the total weight of the entrained polymer.

[0131] Optionally, the channel forming agent may be provided at a weight range of 1% to 15%, optionally 2-12%, optionally 5-12%, optionally about 10%, optionally about 9%, optionally about 8%, optionally about 7%, optionally about 6%, optionally about 5%, optionally about 4%, optionally about 3%, optionally about 2%. Optionally, the base polymer may comprise 10% to 65%, optionally 20% to 45%, optionally 25% to 35% of the total composition by weight. Optionally, a colorant may be added, for example, at about 0.5-2% or about 1% of the total composition by weight. Any combination of the above ranges for the base polymer, surfactant, channel forming agent, and colorant is contemplated.

[0132] Figures 1 to 6 Entrained polymers 20 and various packaging assemblies formed from entrained polymers according to certain embodiments of the present disclosure are shown. Each entrained polymer 20 includes a base polymer 25, optionally a channel forming agent 35, and an active agent 30. As shown, the channel forming agent 35 forms interconnecting channels 45 through the entrained polymer 20. At least some of the active agents 30 are contained within these channels 45, such that the channels 45 communicate between the active agent 30 and the exterior of the entrained polymer 20 through channel openings 48 formed at the outer surface of the entrained polymer 25. While channel forming agents (e.g., 35) are preferred, the present disclosure broadly includes entrained polymers that optionally do not contain channel forming agents.

[0133] Figure 1 A plug 55 constructed from an entrained polymer 20 is shown according to certain embodiments of the invention. The plug 55 can be placed inside a container. As previously mentioned, the entrained polymer 20 includes a base polymer 25, a channel forming agent 35, and an activator 30.

[0134] Figure 2 It shows Figure 1 The image shows a cross-sectional view of plug 55. Additionally, Figure 2 The entrained polymer 20 is shown to have cured, such that the channel forming agent 35 forms interconnected channels 45 to establish pathways throughout the cured plug 55. At least some of the activators 30 are contained in the channels 45, such that the channels 45 communicate between the activators 30 and the exterior of the entrained polymer 20 through channel openings 48 formed at the outer surface of the entrained polymer 25.

[0135] Figure 3 It demonstrates the presence of and Figure 2 Embodiments of plug 55 with similar construction and configuration to plug 55, wherein compared to Figure 2 The interconnecting channels 45 shown are finer. This is likely due to the use of a dimerizing agent (i.e., a plasticizer) with the channel forming agent 35. The dimerizing agent enhances the compatibility between the base polymer 25 and the channel forming agent 35. This enhanced compatibility is facilitated by a lower viscosity blend, which promotes a more thorough blending of the base polymer 25 and the channel forming agent 35, which under normal conditions resist combining into a homogeneous solution. When the entrained polymer 20 with the dimerizing agent added is cured, the interconnecting channels 45 formed therethrough exhibit greater dispersion and lower porosity, thereby establishing a higher density of interconnecting channels throughout the plug 55.

[0136] Interconnecting channels 45, as disclosed herein, facilitate the transport of desired materials, such as odor compounds, throughout the base polymer 25, which typically acts as a barrier against the penetration of these materials. For this reason, the base polymer 25 itself acts as a barrier material in which the surfactant 30 can be entrained. The interconnecting channels 45 formed by the channel forming agent 35 provide pathways for the movement of the desired material through the entrained polymer 10. Without these interconnecting channels 45, it is believed that a relatively small amount of the desired material would be transported through or from the base polymer 25 to the surfactant 30.

[0137] Figure 4 An embodiment of the entrained polymer 10 according to this disclosure is shown. Arrows indicate the path of selected materials, such as odor compounds, from the outside of the entrained polymer 10 through channel 45 to the surfactant particles 30.

[0138] Figure 5An active sheet or film 75, according to one aspect of the invention, is shown, formed by combining an entrained polymer 20 with a barrier sheet 80 to create a composite material. The properties of the active sheet or film 75 are similar to those described with respect to plug 55. The barrier sheet 80 may be a substrate, such as a foil, and / or a polymer with low permeability to the odorous compound of interest. The barrier sheet 80 is compatible with the entrained polymer structure 75 and is therefore configured to be thermally bonded to the active sheet or film 75 when cured after dispensing.

[0139] Figure 6 An embodiment is shown in which an active sheet or film 75 and a barrier sheet 80 are combined to form a package having active properties at an inner surface formed by an entrained polymer 20 in the active sheet or film 75 and vapor-resistant properties at an outer surface formed by the barrier sheet 80. In this embodiment, the active sheet or film 75 occupies a portion of the barrier sheet 80. The method according to the invention for manufacturing the active sheet or film 75 and adhering it to the barrier sheet 80 is not particularly limited.

[0140] In one embodiment, Figure 5 Sheets are joined together to form active packaging 85, as in Figure 6 As shown, two laminated materials or composites are provided, each formed by connecting an active sheet or film 75 to a barrier sheet 80. The sheet materials are stacked, with the active sheets or films 75 facing each other so as to be disposed inside the package and connected at a sealing area 90, forming around the edge of the sealing area inside the package.

[0141] In some embodiments, the entrained polymer is positioned within the container, and substantially all inward-facing portions of the container are composed of the entrained polymer. In some embodiments, the container is manufactured such that the entrained polymer is located below the level of the liquid medium contained within the package, thereby providing direct contact between the surfactant and the liquid medium.

[0142] Representative processes for forming blown film materials include Figure 7 The precursor resin, in granular form, is fed into hopper 105, where screw 110 rotates and forces the material forward while applying heat, gradually forming a melt. The molten material 115 then flows through die 120, producing a hollow tubular material. Air is introduced through an orifice at the center of the die, forming bubbles 125 within the material. The material travels upward around the bubbles, is cooled, and is ultimately allowed to collapse by the action of folding frame 130. Throughout this step, clamping rollers 135 pull the material upward and maintain appropriate tension. The collapsed material passes through a series of rollers, including edge trimming 140, and is finally collected by winding machine 145.

[0143] Due to the nature of blown film processes, some physical properties of the resulting film materials may differ significantly from those produced using other techniques, such as cast film extrusion. For example, cast film processes can produce films with low and / or non-uniform orientation of polymer chains within the material. In contrast, blown film materials can be highly oriented, with the orientation being uniform throughout the cylindrical bubble.

[0144] Furthermore, the orientation of polymer chains within the material can affect crystallinity, which in turn affects properties such as transparency / haze, tear strength and elongation, puncture resistance and toughness.

[0145] The mechanical properties of blown films can differ significantly from those of cast films. In the blown film process, the material is stretched in both the transverse and longitudinal directions. In contrast, stretched films can have uneven strength in both directions.

[0146] Where applicable, other mechanical parameters that may differ in blown films and equivalent cast films in either the longitudinal or transverse direction or both are Young's modulus, dart impact strength, transparency, brittleness, and density.

[0147] The strength of blown film can differ from that of equivalent cast film. Typically, the tensile strength of blown film is comparable in both the longitudinal and transverse film directions. The elongation of blown film is similar in both the longitudinal and transverse film directions.

[0148] Another important feature of blown film technology is that the cooling rate of the film can be adjusted. In this way, the transparency of the film can be adjusted.

[0149] Optionally, in any embodiment, the aforementioned extrusion process includes the co-extrusion of two or more layers, wherein at least one such layer is an active layer (a mixture of polymer and surfactant) and at least another such layer is a polymer material without any surfactant incorporated therein. In such embodiments, the resulting material may be a multilayer composite material, wherein at least one layer is an active entrained polymer layer.

[0150] The various aspects of the invention are illustrated in more detail with reference to the following examples, but it should be understood that the invention is not to be considered limited thereto.

[0151] Example

[0152] Example 1. Compound: Polyolefin

[0153] Imagine using the following polyolefin (CH2CHR) n Combine with odor removers.

[0154] Table 1. Compositions.

[0155]

[0156] This disclosure envisions other formulations. Some formulations envision using EVA at concentrations between 1% and 15%, for example, at 2%, 3%, 4%, 5%, 6%, 8%, 10%, 12%, and 15%. Other channel-forming agents are envisioned, including polyethylene glycols such as polyethylene glycol (PEG), ethylene-vinyl alcohol (EVOH), and polyvinyl alcohol (PVOH); polyamides such as nylon; and propylene oxide polymer monobutyl ether.

[0157] Example 2. Extrusion conditions

[0158] The following conditions were envisioned for the extrusion experiment.

[0159] The samples were run using a blown film extruder (LabTech). The polymer precursor was run at a screw temperature of 350°F (177°C) and a die temperature of 350°F (177°C). Under suitable conditions, the material will flow around the die to form bubbles. Different screw speeds up to 65 rpm can be experimented with. The pinch roller speed can be set at or near 0.5 ft / min. The outside air can be set below 500 rpm to avoid rapid cooling.

[0160] Experiment with blow molding polyethylene samples at a screw and die temperature of 360°F (182°C). Explore various extrusion speeds to find the formation of satisfactory bubbles from the warm polymer precursor.

[0161] Example 3.EXACT TM Mixtures

[0162] The following experimental formulations using the following materials are envisioned:

[0163] Base resin = EXACT TM 3040

[0164] Formula #1 = 60% K360 SYLOSIV / 40% Resin-3040

[0165] EXACT TM The composition of the 3040 formulation in terms of the base resin and the mixture of formulation #1 is listed in Table 4.

[0166] Table 4. EXACT TM 3040 formulation (based on formulation #1)

[0167]

[0168] EXACT TM The composition of the formulation in terms of the base resin and the desiccant SYLOSIV® K360 is listed in Table 5.

[0169] Table 5. EXACT TM 3040 formulation (based on overall composition)

[0170]

[0171] Example 4.EXACT TM 3040 / HYTREL® 7246 polyester formulation

[0172] The following experimental formulations using the following materials are envisioned:

[0173] EXACT TM The composition of 3040 and polyester blends is listed in Table 8.

[0174] Table 8. EXACT TM 3040 / HYTREL® 7246 formulation (based on formulation #1)

[0175]

[0176] Table 9. EXACT TM / HYTREL® 7246 formulation (based on overall composition)

[0177]

[0178] Although the disclosed concepts have been described in detail with reference to specific examples, it will be apparent to those skilled in the art that various changes and modifications can be made to them without departing from their spirit and scope.

Claims

1. A blown film material, the blown film material comprising: Basic polymers; as well as Odor remover, optionally wherein the odor remover is a particulate, microparticle, and / or mineral-based material.

2. The blown film material according to claim 1, wherein the base polymer is selected from polyolefins and polyesters.

3. The blown film material according to claim 2, wherein the base polymer has the formula (-CH2CHR-). n Polyolefins, wherein R is selected from H and nC 1-10 alkyl.

4. The blown film material according to claim 2, wherein the base polymer is polyester.

5. The blown film material according to claim 4, wherein the polyester has the formula (-OOC-Y-COO-Z). n ,in: Y is 1,4-phenylene, and Z is selected from ethylidene, butylidene, hexanedene, and 1,4-cyclohexenedimethylidene.

6. The blown film material according to claim 4, wherein the polyester has the formula ((-CH2) m COO-) n , where m is selected from 1, 2, 3, 4 and 5.

7. The blown film material according to claim 4, wherein the polyester has the formula (-CHRCOO-). n R is selected from H and nC 1-10 alkyl.

8. The blown film material according to any one of claims 3 and 7, wherein R is selected from H, CH3, C2H5, C4H9, n-C6H 13 and n-C8H 17 .

9. The blown film material according to claim 3, wherein R is selected from C2H5, n-C4H9, and n-C6H 13 .

10. The blown film material according to claim 7, wherein R is CH3.

11. The blown film material according to claim 1, wherein the base polymer is selected from polyethylene, polypropylene, and polyethylene / polypropylene copolymer.

12. The blown film material according to claim 8, wherein the base polymer is polyethylene.

13. The blown film material according to claim 1, wherein the base polymer comprises at least one block copolymer.

14. The blown film material according to claim 13, wherein the base polymer comprises an ethylene / α-olefin copolymer.

15. The blown film material according to claim 14, wherein the α-olefin is selected from propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, and 1-dodecene.

16. The blown film material according to claim 15, wherein the α-olefin is 1-hexene.

17. The blown film material of claim 16, wherein the base polymer comprises EXACT TM 3040.

18. The blown film material according to any one of claims 14 to 17, wherein the base polymer further comprises a block copolymer comprising blocks of poly(alkylene terephthalate) monomers.

19. The blown film material of claim 18, wherein the base polymer comprises a block copolymer containing blocks of poly(butylene terephthalate) monomers.

20. The blown film material of claim 19, wherein the base polymer comprises a block copolymer comprising blocks of polyether glycol.

21. The blown film material of claim 20, wherein the base polymer comprises a HYTREL® block copolymer.

22. The blown film material of claim 21, wherein the base polymer comprises HYTREL® 7246.

23. The blown film according to any one of claims 14 to 17, wherein the material comprises between 50% and 90%, optionally between 55% and 90%, optionally between 60% and 90% of the ethylene / α-olefin copolymer.

24. The blown film according to any one of claims 14 to 17, wherein the material comprises about 64%, about 76%, or about 85% of the ethylene / α-olefin copolymer.

25. The blown film material according to any one of claims 18 to 22, wherein the material comprises between 5% and 30%, optionally between 5% and 25%, optionally between 5% and 20% of the ethylene / α-olefin copolymer.

26. The blown film material according to any one of claims 18 to 22, wherein the material comprises about 10%, about 12%, or about 16% of the ethylene / α-olefin copolymer.

27. The blown film material according to any one of claims 18 to 22, wherein the material comprises between 50% and 85%, optionally between 55% and 80%, optionally between 60% and 75% of the block copolymer comprising blocks of poly(alkylene terephthalate) monomers.

28. The blown film material according to any one of claims 20 to 22, wherein the material comprises about 60%, about 70%, or about 75% of the block copolymer comprising blocks containing poly(alkylene terephthalate) monomers.

29. The blown film material according to any one of claims 1 to 22, wherein the base polymer comprises 10% to 70%, optionally 20% to 60% by weight, optionally 30% to 50% by weight, or optionally 40% to 60% by weight of the total composition.

30. The blown film material according to any one of claims 1 to 22, wherein the base polymer comprises 20% to 90%, optionally 30% to 80%, optionally 40% to 70%, or optionally 50% to 60% by weight of the total composition.

31. The blown film material according to any one of claims 1 to 22, wherein the base polymer accounts for 30% to 90%, optionally 40% to 80% by weight, or optionally 50% to 70% by weight of the total composition.

32. The blown film material according to claim 1, wherein the base polymer comprises both polyolefin and polyester.

33. The blown film material according to claim 32, wherein the polyolefin comprises 10% to 40% of the total composition by weight, optionally between 15% and 30%.

34. The blown film material according to any one of claims 32 and 33, wherein the polyester comprises 20% to 80% of the total composition by weight, optionally between 25% and 70%, optionally between 30% and 60%.

35. The blown film material according to any one of claims 32 to 34, wherein: The polyolefin has the formula (-CH2CHR-). n ,and R is selected from H and nC. 1-10 alkyl.

36. The blown film material according to any one of claims 32 to 35, wherein: The polyester has the formula ((-CH2)). m COO-) n ,and m is selected from 1, 2, 3, 4, and 5.

37. The blown film material according to any one of claims 32 to 35, wherein: The polyester has the formula (-CHRCOO-). n ,and R is selected from H and nC. 1-10 alkyl.

38. The blown film according to claim 37, wherein R is -CH3.

39. The blown film according to any one of claims 1 to 38, wherein the odor remover is selected from silica gel, zeolite and molecular sieve.

40. The blown film according to any one of claims 1 to 38, wherein the odor remover is selected from BLANOVA® DS912 and ZEOflair™ 100.

41. The blown film material according to any one of claims 1 to 38, wherein the odor eliminator is an acid or a base.

42. The blown film material according to claim 41, wherein the odor eliminator has the formula M1M2CO3, wherein M1 and M2 are independently selected from H, Li, Na and K, and wherein at most one of M1 and M2 is H.

43. The blown film material according to any one of claims 1 to 38, wherein the odor remover is an ion exchange resin.

44. The blown film material according to any one of claims 1 to 38, wherein the odor remover is an oxidant.

45. The blown film material according to claim 44, wherein the odor remover is an inorganic oxidant.

46. ​​The blown film material according to claim 44, wherein the odor eliminator is an organic oxidant.

47. The blown film according to any one of claims 1 to 46, wherein the odor remover is a malodor remover.

48. The blown film material according to any one of claims 1 to 47, wherein the odor remover accounts for 10% to 80%, optionally 35% to 70%, optionally 40% to 60%, or optionally 45% to 55% by weight of the entrained polymer.

49. The blown film material according to any one of claims 1 to 47, wherein the odor remover accounts for 10% to 60%, optionally 20% to 50%, or optionally 25% to 45% by weight of the total weight of the entrained polymer.

50. The blown film material according to any one of claims 1 to 47, wherein the odor remover accounts for 10% to 50%, optionally 15% to 45%, optionally 20% to 40%, or optionally 25% to 35% by weight of the entrained polymer.

51. The blown film material according to any one of claims 1 to 50, further comprising a channel forming agent.

52. The blown film material according to claim 51, wherein the channel forming agent is selected from polyethylene glycol, glycerol polyamine, polyurethane and polycarboxylic acid, or any combination thereof.

53. The blown film material according to claim 51, wherein the channel forming agent is selected from propylene oxide polymer, propylene oxide polymer-monobutyl ether, ethylene vinyl acetate (EVA), nylon, or any combination thereof.

54. The blown film material according to any one of claims 51 to 53, wherein the channel forming agent is provided in the range of 1% to 15% by weight, optionally 2% to 12%, optionally about 5%.

55. The blown film material according to any one of claims 1 to 54, wherein a 1-inch square blown film material absorbs odorous compounds at a rate of at least 0.2 g / day, optionally at least 0.4 g / day, optionally at least 0.6 g / day, optionally at least 0.8 g / day, optionally at least 1.0 g / day, optionally at least 1.2 g / day at ambient temperature.

56. The blown film material according to any one of claims 1 to 55, wherein the physical properties selected from clarity, tear strength, elongation, puncture resistance, toughness, Young's modulus, dart impact strength, transparency, brittleness and density are significantly different from those of equivalent cast film materials for said blown film material.

57. A method for manufacturing a blown film material according to any one of claims 1 to 56, the method comprising the following steps: A suitable precursor material containing a molten mixture of polymer and odor remover is extruded in a screw extruder while being heated to form a heated material; The heated material is passed through a tubular die. The heated material is expanded and stretched by positive pressure; as well as This allows the expanded and stretched material to cool.

58. The method of claim 57, wherein the extrusion is performed at a rotational speed between 10 rpm and 75 rpm, optionally between 15 rpm and 65 rpm, optionally between 15 rpm and 60 rpm, optionally between 20 rpm and 50 rpm.

59. The method of claim 57, wherein the extrusion is performed at a rotational speed between 5 rpm and 35 rpm, optionally between 10 rpm and 30 rpm, optionally between 10 rpm and 25 rpm, optionally between 10 rpm and 20 rpm.

60. The method according to any one of claims 57 to 59, wherein the extrusion is performed at a temperature between 140°C and 180°C, optionally between 145°C and 175°C, optionally between 150°C and 170°C, optionally between 150°C and 165°C.

61. The method according to any one of claims 57 to 60, wherein the method comprises co-extrusion for forming at least two layers of the expanded and stretched material.

62. The method of claim 61, wherein at least one layer comprises a polymeric material in which no odor remover is mixed.

63. Material produced by the method according to any one of claims 57 to 62.

64. An article comprising a blown film entrained polymer according to any one of claims 1 to 56 and 63.

65. The article of claim 64, wherein the article is selected from containers, boxes, trays, cartons, bottles, utensils, bags, pouches, small packages, gel packaging, blister packaging, and packaging materials.

66. A container, the container comprising: The blown film encapsulated polymer according to any one of claims 1 to 56 and 63, and Suitable internal space for storing products.

67. The container of claim 66, further comprising a lid for closing and / or sealing the container.

68. A method for protecting a product from odorous compounds, the method comprising the step of storing the product in a container according to any one of claims 66 and 67.

69. The method of claim 68, wherein the product is food.

70. The method of claim 68, wherein the product is a drug.

71. The method of claim 68, wherein the product is a medical device or a drug delivery device.

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