CN116512717B - BOPP (biaxially-oriented polypropylene) antibacterial touch shrinkage tobacco film and preparation method and application thereof - Google Patents
BOPP (biaxially-oriented polypropylene) antibacterial touch shrinkage tobacco film and preparation method and application thereof Download PDFInfo
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 55
- 229920006378 biaxially oriented polypropylene Polymers 0.000 title claims abstract description 47
- 239000011127 biaxially oriented polypropylene Substances 0.000 title claims abstract description 47
- 241000208125 Nicotiana Species 0.000 title claims abstract description 36
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000010410 layer Substances 0.000 claims abstract description 68
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 58
- 239000002346 layers by function Substances 0.000 claims abstract description 43
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 42
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 28
- 239000007822 coupling agent Substances 0.000 claims abstract description 18
- 239000002270 dispersing agent Substances 0.000 claims abstract description 18
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 8
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920005606 polypropylene copolymer Polymers 0.000 claims abstract description 3
- -1 polypropylene Polymers 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 27
- 239000004743 Polypropylene Substances 0.000 claims description 23
- 229920001155 polypropylene Polymers 0.000 claims description 23
- 239000002994 raw material Substances 0.000 claims description 19
- 239000000155 melt Substances 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 11
- 230000000845 anti-microbial effect Effects 0.000 claims description 11
- 229910001431 copper ion Inorganic materials 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims description 10
- 239000004480 active ingredient Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 238000003851 corona treatment Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000004599 antimicrobial Substances 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 230000000391 smoking effect Effects 0.000 claims description 3
- 229910000166 zirconium phosphate Inorganic materials 0.000 claims description 3
- LEHFSLREWWMLPU-UHFFFAOYSA-B zirconium(4+);tetraphosphate Chemical compound [Zr+4].[Zr+4].[Zr+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LEHFSLREWWMLPU-UHFFFAOYSA-B 0.000 claims description 3
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 16
- 235000019504 cigarettes Nutrition 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 6
- 102000004169 proteins and genes Human genes 0.000 description 6
- 108090000623 proteins and genes Proteins 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 239000012785 packaging film Substances 0.000 description 4
- 229920006280 packaging film Polymers 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 4
- 241000233866 Fungi Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 210000000234 capsid Anatomy 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000005021 flexible packaging material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
- B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a BOPP antibacterial touch shrinkage tobacco film, and a preparation method and application thereof, wherein the BOPP antibacterial touch shrinkage tobacco film comprises a functional layer, a supporting layer and a heat-seal anti-adhesion layer, and the supporting layer is clamped between the functional layer and the heat-seal anti-adhesion layer; the functional layer comprises the following components in parts by weight: 1-2 parts of composite antibacterial agent, 0.5-1 part of liquid coupling agent, 0.5-1 part of antioxidant, 0.1-0.3 part of dispersing agent, 0.1-0.3 part of heat stabilizer, 70-80 parts of metallocene polypropylene copolymer, 5-8 parts of smooth master batch and 10-15 parts of POE, wherein the composite antibacterial agent comprises a mixture of nano titanium dioxide and heat-resistant metal ion antibacterial agent, has good touch feeling and strong antibacterial property, and meets the requirements of smoke film indexes.
Description
Technical Field
The invention relates to the technical field of packaging materials, in particular to a BOPP (biaxially-oriented polypropylene) antibacterial touch shrinkage tobacco film and a preparation method and application thereof.
Background
BOPP has excellent color and luster degree, has special sense of touch like velvet, and also meets specific index requirements of cigarette case packaging films in the aspects of friction coefficient, haze, contractility, heat sealing property, antistatic level, mechanical property and the like. Can be applied to the fields of gold stamping, local glazing, screen printing, UV printing and the like, and is a very important flexible packaging material such as cigarette labels, lasers, food packages and the like, for example, the package of cigarettes.
Unlike other consumer products, the minimum vending package of cigarettes remains a multi-layer package comprising an inner layer of aluminum foil paper, a middle soft or hard pack, and an outer transparent plastic film, the protective function of each layer of package being independent, and the barrier properties of the entire package being critical to the moisture-, mildew-, and fragrance-preserving effects of the cigarettes. Among the most closely related to cigarette quality is the outer transparent packaging film, what we commonly call the smoke film, which is the material of highest barrier properties in the overall cigarette package. At present, a plurality of smoke films are BOPP films, and the smoke films have the advantages of good moisture resistance and fragrance retention, and can basically meet the use requirements, so that the smoke films are widely applied.
The common BOPP film has poor touch feeling and poor antibacterial property, and bacteria are easy to grow on the surface of the film in the transportation and use processes, so that the appearance and quality of cigarettes are affected.
Disclosure of Invention
In view of the above, the application provides a BOPP antibacterial touch shrinkage smoke film, a preparation method and application thereof, and the BOPP antibacterial touch shrinkage smoke film has good touch and strong antibacterial property and meets the requirements of smoke film indexes.
In order to achieve the technical purpose, the application adopts the following technical scheme:
In a first aspect, the application provides a BOPP antibacterial touch shrinkage tobacco film, which comprises a functional layer, a supporting layer and a heat-seal anti-sticking layer, wherein the supporting layer is clamped between the functional layer and the heat-seal anti-sticking layer; the functional layer comprises the following components in parts by weight: 1-2 parts of composite antibacterial agent, 0.5-1 part of liquid coupling agent, 0.5-1 part of antioxidant, 0.1-0.3 part of dispersing agent, 0.1-0.3 part of heat stabilizer, 70-80 parts of metallocene polypropylene copolymer, 5-8 parts of smooth master batch and 10-15 parts of POE, wherein the composite antibacterial agent comprises nano titanium dioxide and a mixture of heat-resistant metal ion antibacterial agents.
Preferably, the supporting layer comprises the following components in parts by weight: 77-89 parts of polypropylene, 10-20 parts of stiffening master batch and 1-3 parts of antistatic master batch; the anti-sticking sealing layer comprises the following components in parts by weight: 95-99 parts of polypropylene and 1-5 parts of silicon dioxide anti-sticking master batch.
Preferably, the functional layer, the supporting layer and the heat-sealing anti-adhesion layer have the following mass ratio in sequence: 3-8%, 91-98% and 1-5%.
Preferably, the stiffening masterbatch comprises a mixture of hydrogenated petroleum resin and homo-polypropylene.
Preferably, the heat-resistant metal ion antibacterial agent is submicron glass beads and/or zirconium phosphate loaded with an antibacterial active ingredient.
Preferably, the heat-resistant metal ion antibacterial agent has a heat-resistant temperature of 500 to 600 ℃.
Preferably, the antibacterial active ingredient comprises one or more of zinc ions, silver ions and copper ions.
Preferably, the D50 particle size of the heat-resistant metal ion antibacterial agent is 0.4-3 μm.
In a second aspect, the application provides a preparation method of a BOPP antibacterial touch shrinkage tobacco film, comprising the following steps: and (3) sending the selected raw materials into a melt extruder according to parts by mass, processing the raw materials into a melt, co-extruding the melt into thick sheets at 200-250 ℃ through a metering extruder, a filter and a die head casting sheet, biaxially stretching the thick sheets into films, carrying out corona treatment or flame treatment on the films into parent rolls, and carrying out aging treatment and slitting on the parent rolls to obtain the BOPP antibacterial touch shrinkage smoke film.
In a third aspect, the application provides the use of a BOPP antimicrobial touch shrink tobacco film in the packaging of smoking articles.
The beneficial effects of the application are as follows: the BOPP antibacterial touch shrinkage tobacco film disclosed by the application has good touch and certain compression rebound resilience; the antibacterial agent is tightly combined with the raw materials, is not easy to separate out even under high temperature in the processing process, has stable performance and is not easy to degrade, and the prepared BOPP antibacterial touch shrinkage tobacco film has good antibacterial property; the BOPP antibacterial touch shrinkage tobacco film disclosed by the application has high raw material coordination degree among layers, and is not easy to delaminate due to raw material difference in the stretching process.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The application provides a BOPP antibacterial touch shrinkage tobacco film, which comprises a functional layer, a supporting layer and a heat-sealing anti-sticking layer, wherein the supporting layer is clamped between the functional layer and the heat-sealing anti-sticking layer; the functional layer comprises the following components in parts by weight: 1-2 parts of a composite antibacterial agent, 0.5-1 part of a liquid coupling agent, 0.5-1 part of an antioxidant, 0.1-0.3 part of a dispersing agent, 0.1-0.3 part of a heat stabilizer, 70-80 parts of metallocene polypropylene, 5-8 parts of a smooth master batch and 10-15 parts of POE (polyethylene octene co-elastomer), wherein the composite antibacterial agent comprises a mixture of nano titanium dioxide and a heat-resistant metal ion antibacterial agent; the nano titanium dioxide has antibacterial performance and super-strong adsorption capacity, can slow down the release of the heat-resistant metal ion antibacterial agent in the film material, and endows the material with long-acting antibacterial performance; liquid coupling agents in this embodiment include, but are not limited to, silicone coupling agents; antioxidants include, but are not limited to, compound type 1010 antioxidants, type 168 antioxidants; dispersants include, but are not limited to, aqueous dispersants such as those provided by Guanzhong chemical Co., ltd; heat stabilizers include, but are not limited to, zinc stearate, calcium stearate; the slipping master batch comprises 30-50% of slipping agent by mass, wherein the slipping agent comprises but is not limited to silicone; the POE material disclosed by the application combines other component raw materials, so that the functional layer has good touch feeling, the surface friction characteristic endows the material with certain compression rebound resilience, and the product has the same slight flexibility and elasticity as the rubber surface when being touched, and has soft touch feeling.
The preparation method of the functional layer master batch comprises the following steps: firstly pouring metallocene copolymerized polypropylene, smooth master batch and POE into a high-speed mixer, mixing for 5-10 minutes, then uniformly spraying a liquid coupling agent into particles, pouring a heat-resistant metal ion antibacterial agent, a heat stabilizer, an antioxidant and a dispersing agent, mixing for 15-30 minutes to complete master batch material mixing, extruding by a double-screw granulator, bracing, cooling with water at 0-7 ℃ for granulating, and drying to prepare the functional master batch.
In the functional layer master batch, the dispersing agent ensures that the antibacterial agent is uniformly distributed in the master batch and is also distributed on the surface of a film, the antioxidant and the heat stabilizer ensure that the antibacterial agent and POE raw materials are stable to prevent raw materials from oxidative degradation, the coupling agent ensures that all components of the functional master batch are tightly fused together, the antibacterial agent is combined in the raw materials and is not easy to separate out or separate, and meanwhile, the functional layer and the core layer are combined together to prevent delamination due to raw material difference in the stretching process.
The supporting layer comprises the following components in parts by weight: 77-89 parts of polypropylene, 10-20 parts of stiffening master batch and 1-3 parts of antistatic master batch; the anti-sticking sealing layer comprises the following components in parts by weight: 95-99 parts of polypropylene and 1-5 parts of silicon dioxide anti-sticking master batch. The mass ratio of the functional layer, the supporting layer and the heat-sealing anti-sticking layer is as follows: 3-8%, 91-98% and 1-5%. The BOPP antibacterial touch shrinkage tobacco film layer obtained according to the formula has high compatibility, the functional layer provides antibacterial and touch functions, the supporting layer ensures shrinkage force, stiffness and other tobacco film indexes of the tobacco film, and the heat-sealing anti-sticking layer is used as a medium to firmly connect the tobacco film with a packaging base material; the difference of main raw materials among the three layers is small, delamination is not easy to occur in the stretching process, and a foundation is provided for guaranteeing the antibacterial property and touch feeling of the BOPP film.
The stiffening master batch comprises a mixture of hydrogenated petroleum resin and homopolymerized polypropylene (the ratio is 1:1), the BOPP is added into the cigarette packaging film, and about 20% of stiffening master batch can be added to obviously change the air tightness of the cigarette packaging film, so that the stiffening master batch is beneficial to the long-term property of cigarette taste, and has good fluidity, so that the stiffening master batch can reduce the shearing force of a screw and the polypropylene, obviously change the shrinkage of the film, lead the heat shrinkage of the film to be higher, adapt to the compact requirement of the cigarette packaging, and further can change the transparency and heat sealing property of the film, reduce the haze and heat sealing temperature of the film, so as to adapt to the high-speed packaging requirement of the cigarette packaging machine, and has the following remarkable characteristics: the tensile strength and the elastic modulus of the BOPP film can be greatly improved, and the BOPP film has certain influence on the touch sense.
The heat-resistant metal ion antibacterial agent is submicron glass beads and/or zirconium phosphate loaded with antibacterial active ingredients; the heat-resistant temperature of the heat-resistant metal ion antibacterial agent is 500-600 ℃; the heat-resistant metal ion antibacterial agent of the scheme has the advantages that the heat resistance is guaranteed by the heat-resistant temperature, the stability is high, degradation in the BOPP film preparation process is prevented, the antibacterial performance is reduced, the antibacterial agent with the carrier is matched with the dispersing agent and the liquid coupling agent, the dispersion fusion degree is high, and the antibacterial agent is not easy to separate out even under high temperature.
The antibacterial active ingredient comprises one or more of zinc ion, silver ion and copper ion; the silver ions are safe and harmless to human bodies, realize broad-spectrum antibacterial effect by interfering and destroying proteins in bacteria, and have better inhibition effect on various fungi containing protein capsids; copper ions are essential elements existing in a human body and are safe and harmless to the human body, and the copper ions realize broad-spectrum antibacterial effect by interfering and damaging proteins in bacteria, and have good inhibition effect on various fungi containing protein capsids; zinc ions are essential elements existing in human bodies and are safe and harmless to human bodies, realize broad-spectrum antibacterial effect by interfering and destroying proteins in bacteria, and have better inhibition effect on various fungi containing protein capsids.
The D50 particle size of the heat-resistant metal ion antibacterial agent is 0.4-3 mu m; the antibacterial agent can be uniformly distributed in the raw materials within the range of particle size and can keep a certain antibacterial density, and the too low particle size can influence the dispersibility of the heat-resistant metal ion antibacterial agent; the mixture formed by mixing the antibacterial agents with different particle sizes is more beneficial to improving the antibacterial property compared with the antibacterial agent with single particle size.
In a second aspect, the application provides a preparation method of a BOPP antibacterial touch shrinkage tobacco film, comprising the following steps: the raw materials of the functional layer, the supporting layer and the heat-sealing anti-sticking layer are sent into a melt extruder according to parts by mass to be respectively processed into corresponding melts, the melts are co-extruded into thick sheets at 200-250 ℃ through a metering extruder, a filter and a die head casting sheet, the thick sheets are biaxially stretched into films, the films are processed into parent rolls through corona treatment or flame treatment, and the parent rolls are aged and cut to obtain the BOPP antibacterial touch shrinkage smoke film.
In a third aspect, the application provides the use of a BOPP antimicrobial touch shrink tobacco film in the packaging of smoking articles.
The present invention is further illustrated by the following specific examples.
Example 1
The BOPP antibacterial touch shrinkage tobacco film comprises a functional layer, a supporting layer and a heat-sealing anti-sticking layer, wherein the supporting layer is clamped between the functional layer and the heat-sealing anti-sticking layer; the functional layer comprises the following components in parts by weight: 0.5 part of heat-resistant metal ion antibacterial agent, 0.5 part of nano titanium dioxide, 0.5 part of siloxane coupling agent, 0.5 part of 1010 antioxidant, 0.1 part of water-based dispersing agent, 0.1 part of zinc stearate, 70 parts of metallocene copolymerized polypropylene, 5 parts of smooth master batch and 10 parts of POE (polyethylene octene co-elastomer); wherein, the carrier of the heat-resistant metal ion antibacterial agent is glass, the antibacterial active ingredients are zinc ions and copper ions, the particle size d50=0.4 μm of the zinc ions, the particle size d50=1 μm of the copper ions, and the heat-resistant temperature is 600 ℃. The supporting layer comprises the following components in parts by weight: 77 parts of polypropylene, 10 parts of stiffening master batch and 1 part of antistatic master batch; the anti-sticking sealing layer comprises the following components in parts by weight: 95 parts of polypropylene and 1 part of silicon dioxide. The mass ratio of the functional layer, the supporting layer and the heat-sealing anti-sticking layer is as follows: 3%, 91% and 1%.
The preparation method of the functional layer master batch comprises the following steps: the preparation method comprises the steps of firstly pouring metallocene copolymerized polypropylene, smooth master batch and POE into a high-speed mixer according to parts by mass, mixing for 5 minutes, uniformly spraying a liquid coupling agent into particles, pouring a heat-resistant metal ion antibacterial agent, a heat stabilizer, an antioxidant and a dispersing agent, mixing for 15 minutes to complete master batch material mixing, extruding by a double-screw granulator, drawing the master batch at the extrusion temperature of 190-235 ℃, cooling with water at 0-7 ℃ to granulate, and drying to obtain the functional layer master batch.
The BOPP antibacterial touch shrinkage tobacco film is integrally formed by biaxial stretching after coextrusion of a functional layer, a supporting layer and a heat-seal anti-sticking layer, and the specific preparation method is as follows:
sending the selected raw materials into a melt extruder according to parts by mass to be processed into a melt, co-extruding the melt into thick sheets at 200-250 ℃ through a metering extruder, a filter and a die head casting sheet, biaxially stretching the thick sheets into films, carrying out corona treatment or flame treatment on the films into parent rolls, carrying out aging treatment and slitting on the parent rolls to obtain the BOPP antibacterial touch shrinkage smoke film; the BOPP antibacterial touch shrinkage tobacco film of the embodiment is subjected to tobacco film test, and detection items, test methods and detection values are shown in table 1, which proves that the BOPP antibacterial touch shrinkage tobacco film prepared by the scheme has the standard of composite tobacco films.
TABLE 1 detection results of example 1
Example 2
The BOPP antibacterial touch shrinkage tobacco film comprises a functional layer, a supporting layer and a heat-sealing anti-sticking layer, wherein the supporting layer is clamped between the functional layer and the heat-sealing anti-sticking layer; the functional layer comprises the following components in parts by weight: 2 parts of heat-resistant metal ion antibacterial agent, 0.5 part of nano titanium dioxide, 1 part of siloxane coupling agent, 1 part of 1010 type antioxidant, 0.3 part of water-based dispersing agent, 0.3 part of zinc stearate, 80 parts of metallocene copolymerized polypropylene, 8 parts of smooth master batch and 15 parts of POE (polyethylene octene co-elastomer); wherein, the carrier of the heat-resistant metal ion antibacterial agent is glass, the antibacterial active ingredients are zinc ions and copper ions, the particle size d50=3 μm of the zinc ions, the particle size d50=1 μm of the copper ions, and the heat-resistant temperature is 600 ℃. The supporting layer comprises the following components in parts by weight: 89 parts of polypropylene, 20 parts of stiffening master batch and 3 parts of antistatic master batch; the anti-sticking sealing layer comprises the following components in parts by weight: 99 parts of polypropylene and 5 parts of silicon dioxide anti-sticking master batch. The mass ratio of the functional layer, the supporting layer and the heat-sealing anti-sticking layer is as follows: 8%, 98% and 5%.
The preparation method of the functional layer master batch comprises the following steps: the preparation method comprises the steps of firstly pouring metallocene copolymerized polypropylene, smooth master batch and POE into a high-speed mixer according to parts by mass, mixing for 10 minutes, uniformly spraying a liquid coupling agent into particles, pouring a heat-resistant metal ion antibacterial agent, a heat stabilizer, an antioxidant and a dispersing agent, mixing for 30 minutes to complete master batch material mixing, extruding by a double-screw granulator, drawing the master batch at the extrusion temperature of 190-235 ℃, cooling with water at 0-7 ℃ to granulate, and drying to obtain the functional layer master batch.
The BOPP antibacterial touch shrinkage tobacco film is integrally formed by biaxial stretching after coextrusion of a functional layer, a supporting layer and a heat-seal anti-sticking layer, and the specific preparation method is as follows:
And (3) sending the selected raw materials into a melt extruder according to parts by mass, processing the raw materials into a melt, co-extruding the melt into thick sheets at 250 ℃ through a metering extruder, a filter and a die head casting sheet, biaxially stretching the thick sheets into films, carrying out corona treatment or flame treatment on the films into parent rolls, and carrying out aging treatment and slitting on the parent rolls to obtain the BOPP antibacterial touch shrinkage tobacco film.
Example 3
The BOPP antibacterial touch shrinkage tobacco film comprises a functional layer, a supporting layer and a heat-sealing anti-sticking layer, wherein the supporting layer is clamped between the functional layer and the heat-sealing anti-sticking layer; the functional layer comprises the following components in parts by weight: 1 part of heat-resistant metal ion antibacterial agent, 0.5 part of nano titanium dioxide, 1 part of siloxane coupling agent, 1 part of 1010 type antioxidant, 0.2 part of water-based dispersing agent, 0.2 part of zinc stearate, 75 parts of metallocene copolymerized polypropylene, 6 parts of smooth master batch and 12 parts of POE (polyethylene octene co-elastomer); wherein, the carrier of the heat-resistant metal ion antibacterial agent is glass, the antibacterial active ingredients are zinc ions and copper ions, the particle size d50=2μm of the zinc ions, the particle size d50=1μm of the copper ions, and the heat-resistant temperature is 600 ℃. The supporting layer comprises the following components in parts by weight: 80 parts of polypropylene, 15 parts of stiffening master batch and 2 parts of antistatic master batch; the anti-sticking sealing layer comprises the following components in parts by weight: 98 parts of polypropylene and 3 parts of silicon dioxide anti-sticking master batch. The mass ratio of the functional layer, the supporting layer and the heat-sealing anti-sticking layer is as follows: 5%, 95% and 3%.
The preparation method of the functional layer master batch comprises the following steps: the preparation method comprises the steps of firstly pouring metallocene copolymerized polypropylene, smooth master batch and POE into a high-speed mixer according to parts by mass, mixing for 10 minutes, uniformly spraying a liquid coupling agent into particles, pouring a heat-resistant metal ion antibacterial agent, a heat stabilizer, an antioxidant and a dispersing agent, mixing for 30 minutes to complete master batch material mixing, extruding by a double-screw granulator, drawing the master batch at the extrusion temperature of 190-235 ℃, cooling with water at 0-7 ℃ to granulate, and drying to obtain the functional layer master batch.
The BOPP antibacterial touch shrinkage tobacco film is integrally formed by biaxial stretching after coextrusion of a functional layer, a supporting layer and a heat-seal anti-sticking layer, and the specific preparation method is as follows:
And (3) sending the selected raw materials into a melt extruder according to parts by mass, processing the raw materials into a melt, co-extruding the melt into thick sheets at 220-250 ℃ through a metering extruder, a filter and a die head casting sheet, biaxially stretching the thick sheets into films, carrying out corona treatment or flame treatment on the films into parent rolls, and carrying out aging treatment and slitting on the parent rolls to obtain the BOPP antibacterial touch shrinkage smoke film.
Comparative example 1
A BOPP antimicrobial touch shrink smoke film was the same as example 1 except that the heat resistant metal ion antimicrobial agent was replaced with a nano silver antimicrobial agent.
Comparative example 2
A BOPP antimicrobial touch shrink smoke film was the same as in example 1 except that the component POE was not included.
Comparative example 3
A BOPP antimicrobial touch shrink tobacco film was the same as example 1 except that a silicone coupling agent was not included.
Comparative example 4
A BOPP antimicrobial touch shrink smoke film was the same as example 1 except that no aqueous dispersant was included.
Comparative example 5
A BOPP antimicrobial touch shrink smoke film was the same as example 1 except that neither a silicone coupling agent nor an aqueous dispersing agent was included.
Evaluation test
The antibacterial properties of examples 1 to 3 and comparative examples 1 to 5 were tested according to the GB/T31402-2015 plastic surface antibacterial property test method, and the results are shown in Table 2; 100 persons were selected to evaluate the touch performance of the test subjects, and the average score was calculated, and the results are shown in table 2.
Table 2 results of performance evaluation
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (5)
1. The BOPP antibacterial touch shrinkage tobacco film is characterized by comprising a functional layer, a supporting layer and a heat-sealing anti-sticking layer, wherein the supporting layer is clamped between the functional layer and the heat-sealing anti-sticking layer; the functional layer comprises the following components in parts by weight: 1-2 parts of a composite antibacterial agent, 0.5-1 part of a liquid coupling agent, 0.5-1 part of an antioxidant, 0.1-0.3 part of a dispersing agent, 0.1-0.3 part of a heat stabilizer, 70-80 parts of metallocene polypropylene copolymer, 5-8 parts of a smooth master batch and 10-15 parts of POE, wherein the composite antibacterial agent comprises a mixture of nano titanium dioxide and a heat-resistant metal ion antibacterial agent, and the supporting layer comprises the following components in parts by mass: 77-89 parts of polypropylene, 10-20 parts of stiffening master batch and 1-3 parts of antistatic master batch; the anti-sticking sealing layer comprises the following components in parts by weight: 95-99 parts of polypropylene and 1-5 parts of silicon dioxide anti-sticking master batch, wherein the functional layer, the supporting layer and the heat-sealing anti-sticking layer are sequentially prepared from the following components in percentage by mass: 3-8%, 91-98% and 1-5% of stiffening master batch, wherein the stiffening master batch comprises a mixture of hydrogenated petroleum resin and homo-polypropylene, the heat-resistant metal ion antibacterial agent is submicron glass beads and/or zirconium phosphate loaded with antibacterial active ingredients, and the antibacterial active ingredients comprise one or more of zinc ions, silver ions and copper ions; the preparation method of the functional layer master batch comprises the following steps: firstly pouring metallocene copolymerized polypropylene, smooth master batch and POE into a high-speed mixer, mixing for 5-10 minutes, then uniformly spraying a liquid coupling agent into particles, pouring a heat-resistant metal ion antibacterial agent, a heat stabilizer, an antioxidant and a dispersing agent, mixing for 15-30 minutes to complete master batch material mixing, extruding by a double-screw granulator, bracing, cooling with water at 0-7 ℃ for granulating, and drying to prepare the functional master batch.
2. The BOPP antimicrobial touch-shrinkable tobacco film of claim 1, wherein the heat-resistant metal ion antimicrobial agent has a heat resistance temperature of 500-600 ℃.
3. The BOPP antimicrobial touch-shrinkable tobacco film of claim 1, wherein the heat-resistant metal ion antimicrobial agent has a D50 particle size of 0.4-3 μιη.
4. A process for preparing the BOPP antimicrobial touch shrink tobacco film of any one of claims 1-3, comprising the steps of: and (3) sending the selected raw materials into a melt extruder according to parts by mass to be processed into a melt, co-extruding the melt into thick sheets at 200-250 ℃ through a metering extruder, a filter and a die head casting sheet, biaxially stretching the thick sheets into films, carrying out corona treatment or flame treatment on the films into parent rolls, and carrying out aging treatment and slitting on the parent rolls to obtain the BOPP antibacterial touch shrinkage tobacco film.
5. Use of a BOPP antimicrobial touch-shrink tobacco film as claimed in any one of claims 1 to 3 in packaging of smoking articles.
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| CN113910729A (en) * | 2021-11-03 | 2022-01-11 | 海南赛诺实业有限公司 | High-heat-seal-strength biaxially oriented polypropylene high-barrier coating film and preparation method thereof |
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| CN110194889B (en) * | 2018-02-27 | 2022-11-15 | 嘉丰工业科技（惠州）有限公司 | Method for preparing modified thermoplastic plastic and product with microorganism adhesion resistance and composition for preparing modified thermoplastic plastic |
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| CN105882078A (en) * | 2014-10-08 | 2016-08-24 | 山东中塑泰富科技有限公司 | Technology for applying novel resin POE to POF polyolefin shrink film |
| CN211443322U (en) * | 2019-12-18 | 2020-09-08 | 东莞市开源塑化科技有限公司 | Multi-layer co-extrusion casting mildew-proof antibacterial film |
| CN111688320A (en) * | 2020-06-06 | 2020-09-22 | 湖北富思特材料科技集团有限公司 | Extrusion composite low-temperature heat-sealing shrinkage tobacco film |
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