WO2012062137A1 - 一种多功能bopp烟用包装膜及其制造方法 - Google Patents

一种多功能bopp烟用包装膜及其制造方法 Download PDF

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Publication number
WO2012062137A1
WO2012062137A1 PCT/CN2011/077949 CN2011077949W WO2012062137A1 WO 2012062137 A1 WO2012062137 A1 WO 2012062137A1 CN 2011077949 W CN2011077949 W CN 2011077949W WO 2012062137 A1 WO2012062137 A1 WO 2012062137A1
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Prior art keywords
layer
masterbatch
parts
film
homopolypropylene
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PCT/CN2011/077949
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English (en)
French (fr)
Inventor
黄水寿
郭加义
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浙江大东南包装股份有限公司
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Priority to EP11840083.7A priority Critical patent/EP2639061A4/en
Priority to US13/521,644 priority patent/US9144931B2/en
Publication of WO2012062137A1 publication Critical patent/WO2012062137A1/zh
Priority to US14/592,398 priority patent/US9944007B2/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered 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
    • B32B27/08Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0018Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07Flat, e.g. panels
    • B29C48/08Flat, e.g. panels flexible, e.g. films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/023Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B29C55/14Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
    • B29C55/143Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly parallel to the direction of feed and then transversely thereto
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/04After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/18Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F17/00Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00Use of unspecified rubbers as moulding material
    • B29K2021/003Thermoplastic elastomers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10Polymers of propylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10Polymers of propylene
    • B29K2023/12PP, i.e. polypropylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10Polymers of propylene
    • B29K2023/14Copolymers of polypropylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037Other properties
    • B29K2995/005Oriented
    • B29K2995/0053Oriented bi-axially
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00Resin or rubber layer containing a blend of at least two different polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2274/00Thermoplastic elastomer material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/40Properties of the layers or laminate having particular optical properties
    • B32B2307/412Transparent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/50Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514Oriented
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/714Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145Rot proof, resistant to bacteria, mildew, mould, fungi
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/724Permeability to gases, adsorption
    • B32B2307/7242Non-permeable
    • B32B2307/7246Water vapor barrier
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/746Slipping, anti-blocking, low friction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00Packaging equipment or accessories not otherwise provided for
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31909Next to second addition polymer from unsaturated monomers

Definitions

  • the present invention relates to a packaging film for cigarettes and a method of manufacturing the same. Background technique
  • the cigarette packaging film (referred to as smoke film) used by domestic cigarette manufacturers adopts biaxially oriented polypropylene film (referred to as BOPP film). Because of the high transparency of BOPP film, the cigarettes are crisp, noble and worth multiplying after packaging. Because BOPP membranes are inexpensive and cost-effective, they are widely used in cigarette manufacturers.
  • Cigarettes Due to the biaxially stretched BOPP film, the barrier property is poor, and the moisture permeability is as high as 2.0 g/m 2 ⁇ 24H, thus affecting the moisture resistance of the cigarette.
  • Cigarettes have high requirements for moisture resistance, and the mildew caused by moisture develops rapidly, causing the odor of cigarettes. Consumers will recognize them when they suck, and they must return them.
  • the warehouses of cigarette factories and tobacco companies have excellent moisture-proof performance. They are stored in warehouses with excellent sealing performance, and large-box cigarettes do not get wet.
  • Packaging costs are a huge expense for the cigarette industry.
  • the weight of packaging materials is light, which is in response to the government's specific actions for energy saving and emission reduction. Therefore, for the smoke film in this respect The improvement is also urgent.
  • the utility model relates to a multifunctional BOPP cigarette packaging film and a manufacturing method thereof, which have low wettability and good smoothness, and are suitable for high-speed packaging airport and low cost.
  • the utility model relates to a multifunctional BOPP cigarette packaging film, wherein the multifunctional long-acting anti-rust film comprises an upper layer, an upper middle layer, a central layer, a middle lower layer and a lower layer, wherein the upper layer is a binary copolymer polypropylene surface layer, the upper middle layer And the middle and lower layers are both a homopolypropylene antibacterial agent layer, the central layer is a homopolymer polypropylene reinforcing layer, the lower layer is a binary copolymer polypropylene bottom layer, and the middle and lower layers are covered on the lower layer.
  • the central layer covers the middle and lower layers, the upper middle layer covers the central layer, and the upper layer covers the middle upper layer;
  • the multifunctional BOPP cigarette packaging film the upper layer accounts for 8 ⁇ 15% of the total mass, the middle layer accounts for 12-21% of the total mass, the center layer accounts for 38-50% of the total mass, and the middle and lower layers account for the total mass. 12-21%, the lower layer accounts for 8 ⁇ 15% of the total mass;
  • the binary copolymerized polypropylene surface layer and the binary copolymerized polypropylene bottom layer respectively comprise a binary copolymerized polypropylene, a thermoplastic elastomer and an ultra-slip/anti-blocking masterbatch, and the mass fraction ratio of the three components is: 7 ⁇ 11 parts of binary copolymerized polypropylene, 0.5 ⁇ 3.5 parts of thermoplastic elastomer, 0.5 ⁇ 3.5 parts of super-slip/anti-blocking masterbatch;
  • the homopolypropylene antibacterial agent layer comprises a homopolypropylene PP, an antibacterial masterbatch and a rapid migration antistatic masterbatch, and the mass fraction ratio of the three components is: 11 to 14 parts of the homopolypropylene PP, the antibacterial masterbatch 0.5 ⁇ 3.5 parts, rapid migration of antistatic masterbatch 0.5 ⁇ 3.5 parts;
  • the homopolymer polypropylene reinforcing agent layer comprises a homopolypropylene PP, an antistatic/slip masterbatch and a special reinforcing masterbatch, and the mass fraction ratio of the three components is: homopolypropylene PP25.5 ⁇ 32.5 parts, antistatic/smooth masterbatch 0.5 ⁇ 4.5 parts, especially 5 ⁇ 20 parts of masterbatch.
  • a method for manufacturing a multifunctional BOPP cigarette packaging film comprising the steps of:
  • the multifunctional BOPP cigarette packaging film the upper layer is a binary copolymer polypropylene surface layer, and the middle upper layer and the middle middle layer are both homopolypropylene antibacterial layer, the center The layer is a homopolymer polypropylene reinforcing agent layer, and the lower layer is a bottom layer of a binary copolymer polypropylene;
  • the upper layer accounts for 8 ⁇ 15% of the total mass
  • the middle and upper layers account for 12 ⁇ 21% of the total mass
  • the central layer accounts for 38 ⁇ 50% of the total mass
  • the middle and lower layers account for 12 ⁇ 21% of the total mass
  • the lower layer accounts for 8 ⁇ 21% of the total mass.
  • the binary copolymerized polypropylene surface layer and the binary copolymerized polypropylene bottom layer respectively comprise a binary copolymerized polypropylene, a thermoplastic elastomer, and a super-slip/anti-blocking masterbatch, and the mass fraction of the three components The ratio is: 7 ⁇ 11 parts of binary copolymer polypropylene, 0.5 ⁇ 3.5 parts of thermoplastic elastomer, 0.5 ⁇ 3.5 parts of super smooth/anti-blocking masterbatch;
  • the homopolypropylene antibacterial agent layer comprises a homopolypropylene PP, an antibacterial masterbatch and a rapid migration antistatic masterbatch, and the mass fraction ratio of the three components is: 11 to 14 parts of the homopolypropylene PP, the antibacterial masterbatch 0.5 ⁇ 3.5 parts, rapid migration of antistatic masterbatch 0.5 ⁇ 3.5 parts;
  • the homopolymer polypropylene reinforcing agent layer comprises a homopolypropylene PP, an antistatic/slip masterbatch and a special reinforcing masterbatch, and the mass fraction ratio of the three components is: homopolypropylene PP25.5 ⁇ 32.5 parts, antistatic/slip masterbatch 0.5 ⁇ 4.5 parts, especially 5 ⁇ 20 parts of masterbatch;
  • the prepared mixture is fed into five extruders through a feeder, and the five extruders respectively correspond to the upper layer, the middle layer, the center layer, the middle layer and the lower layer, and are extruded through a molten state. After multiple filters, it enters the T-die and the melt is extruded through the die lip;
  • the manufacturing method further includes the following steps:
  • aging treatment The large-volume film is placed on the film-receiving frame for 24 hours aging treatment;
  • the manufacturing method further includes the following steps:
  • the slitted small roll film is used for anti-counterfeiting printing on the film color printing machine with fluorescent anti-counterfeiting ink and color ink, and is automatically dried during the printing process; (4.3) Automatic folding of anti-counterfeiting color film;
  • the raw materials are sent to the batching machine through the spiral conveying and the vibration conveying, and the ingredients are uniformly distributed in the ingredients; and the mixture is conveyed by the feeding machine. Go to the silo of the extruder corresponding to each layer.
  • step (2.3) under the action of the stretching rolls of different axial speeds of the longitudinal stretching mechanism and the plurality of pairs of heating rolls in the middle, the longitudinal direction is obtained; in the lateral direction, the chain clamp clamps the two sides, along the gradual The widened track moves forward, passes through the heating zone and the shaped zone, and the film width is required to reach the set thickness and width after longitudinal stretching and lateral stretching.
  • the beneficial effects of the invention are mainly embodied in: 1 effectively solving the mildew phenomenon caused by the inhalation of humid gas caused by poor barrier property of the packaging film for B0PP cigarettes, completely eliminating the problem of mildew and deterioration in the shelf life of the cigarette, and effectively ensuring the quality of the cigarette , reduce the loss of the enterprise.
  • Figure 1 is a schematic view showing the structure of a multi-functional BOPP cigarette packaging film.
  • Fig. 2 is a flow chart showing the manufacturing method of the multifunctional BOPP cigarette packaging film.
  • Example 1 The present invention will be further described below in conjunction with specific embodiments, but the scope of protection of the present invention is not limited thereto: Example 1
  • a multifunctional BOPP cigarette packaging film the multifunctional long-acting anti-rust film comprises an upper layer 1, an upper middle layer 2, a central layer 3, a middle lower layer 4 and a lower layer 5, wherein the upper layer 1 is binary a copolymerized polypropylene surface layer, wherein the middle upper layer 2 and the middle middle layer 4 are both a homopolypropylene antibacterial agent layer, the center layer 3 is a homopolymer polypropylene reinforcing agent layer, and the lower layer 5 is a binary copolymer polypropylene.
  • the middle layer covers the lower layer
  • the center layer covers the middle layer
  • the middle layer covers the center layer
  • the middle layer covers the center layer
  • the upper layer covers the middle layer;
  • the multifunctional BOPP cigarette packaging film the upper layer accounts for 8-15% of the total mass, the middle layer accounts for 12-21% of the total mass, the center layer accounts for 38-50% of the total mass, and the middle and lower layers account for 12% of the total mass. -21%, the lower layer accounts for 8 ⁇ 15% of the total mass;
  • the binary copolymerized polypropylene surface layer and the binary copolymerized polypropylene bottom layer respectively comprise a binary copolymerized polypropylene, a thermoplastic elastomer and an ultra-slip/anti-blocking masterbatch, and the mass fraction ratio of the three components is: 7 ⁇ 11 parts of binary copolymerized polypropylene, 0.5 ⁇ 3.5 parts of thermoplastic elastomer, 0.5 ⁇ 3.5 parts of super-slip/anti-blocking masterbatch;
  • the homopolypropylene antibacterial agent layer comprises a homopolypropylene PP, an antibacterial masterbatch and a rapid migration antistatic masterbatch, and the mass fraction ratio of the three components is: 11 to 14 parts of the homopolypropylene PP, the antibacterial masterbatch 0.5 ⁇ 3.5 parts, rapid migration of antistatic masterbatch 0.5 ⁇ 3.5 parts;
  • the homopolymer polypropylene reinforcing agent layer comprises a homopolypropylene PP, an antistatic/slip masterbatch and a special reinforcing masterbatch, and the mass fraction ratio of the three components is: homopolypropylene PP25.5 ⁇ 32.5 parts, antistatic/smooth masterbatch 0.5 ⁇ 4.5 parts, especially 5 ⁇ 20 parts of masterbatch.
  • the upper layer accounts for 8% of the total mass
  • the middle and upper layers account for 12% of the total mass
  • the center layer accounts for 48% of the total mass
  • the middle and lower layers account for 20% of the total mass
  • the lower layer accounts for 12% of the total mass
  • the homopolypropylene antibacterial agent layer wherein the homopolypropylene PP is produced by BSELL, the grade 8182PP, requires the intrinsic viscosity of the resin to be between 0.58 and 0.65, the molecular weight distribution range is narrow, and the fluctuation is between ⁇ 0.01, impurities And the gel content is particularly low, the content is 0.2%;
  • the antibacterial masterbatch is produced by Shanghai Weilaixin Material Co., Ltd., grade PP-BMFZ;
  • the fast-moving antistatic masterbatch is produced by the Constance factory in Germany, grade AT4.63PP;
  • the mass fraction ratio of the components is: 11 parts of homopolypropylene PP, 0.5 parts of antibacterial masterbatch, and 0.5 parts of rapid migration antistatic masterbatch;
  • the resin has an intrinsic viscosity of 0.58 to 0.65, and the molecular weight distribution range is narrow, and the fluctuation is between ⁇ 0.01. Impurity and gel content is particularly low, the content is 0.2%; Antistatic/smooth masterbatch is produced by the Constamp plant in Germany, grade ATG4504PP; Specially increased masterbatch is produced by the Constamp plant in Germany, grade MA0936PP, three components The mass fraction ratio is: 25.5 parts of homopolypropylene PP, 0.5 parts of antistatic/smooth masterbatch, and 5 parts of the masterbatch.
  • the multi-functional cigarette packaging film of the embodiment achieves the goal of saving 20% of raw materials on the basis of conventional packaging, and the produced tobacco film is thinner, has higher transparency, better antibacterial property, and better smoothness and anti-blocking property.
  • the film has a stronger stiffness and uses the following measures to achieve performance conversion:
  • the key to grasping the raw materials is the key condition for the production of ultra-thin smoke film. Since the material to be manufactured is 20% less than the conventional smoke film, the film must be It is thinner and the quality must be better to withstand the operation of the high-speed packaging machine. Therefore, raw materials that are unclean and do not meet the requirements will lead to production failure.
  • the choice of PP polyester size is very important for the success rate of ultra-thin BOPP film production; the optimum viscosity should be between 0.58 and 0.65; the molecular weight fluctuation range of polyester PP must be less than or equal to ⁇ 0.01, impurity and The gel content is 0.02%. Binary polyester and other specifications must reach between 99 and 99.5%. The above conditions are essential to ensure the production of ultra-thin cigarette packaging film.
  • the masterbatch with ultra-fine mesh size and uniform dispersion must be selected, and the tableting test should be observed under a microscope.
  • the particle size of the masterbatch is less than 1.5 ⁇ m, and sufficient dispersion can be obtained.
  • the masterbatch produced at the Constamp plant in Germany is of good quality and meets the requirements for ultra-thin stretching. Moreover, the plant's products are preferred because they reduce the effects of haze, frost, and white spots on ultra-thin products and increase the optical properties of the film.
  • the melt in the production line is greatly encrypted by the filter, from the original production of 22 ⁇ ⁇ cigarette membrane coarse filter 30 ⁇ 40 ⁇ and fine filtration 20 ⁇ 30 ⁇ , encrypted to high-quality disc filter, coarse filter 25 ⁇ , Fine filtration of 15 ⁇ , so as to achieve no rupture of the film when the ultra-thin film is stretched without large impurities and gel.
  • Antibacterial Masterbatch PP-BMFZ is a polypropylene antibacterial masterbatch made by assembling a preferred antibacterial functional group on a basic polyester polypropylene molecule using an antibacterial technique of molecular assembly.
  • the antibacterial masterbatch is added to the polyester in a certain proportion, and is formed into a film by biaxial stretching.
  • the antibacterial functional group has a strong polarity, and the final functional group gradually gathers on the surface of the film to produce an antibacterial and bactericidal effect.
  • the antibacterial masterbatch is safe and non-toxic. It is a non-toxic and non-irritating substance suitable for food packaging; the masterbatch has the following characteristics:
  • B has good mildew resistance, and tests against Aspergillus niger, Aspergillus flavus, Aspergillus variabilis, C. sphaeroides, budding stalk, Penicillium citrinum, Trichoderma viride, etc., and the anti-mildew effect reaches the first-class standard.
  • C antibacterial effect is long-lasting, as long as the film is present, the antibacterial effect of the film will not decline.
  • D antibacterial masterbatch is resistant to high temperatures, so high temperature extrusion does not change its antibacterial effect.
  • the upper layer accounts for 10% of the total mass
  • the middle and upper layers account for 15% of the total mass
  • the center layer accounts for 45% of the total mass
  • the middle and lower layers account for 21% of the total mass
  • the lower layer accounts for 9% of the total mass
  • the mass fraction ratio of the three components is: 8 parts of binary copolymerized polypropylene, 1 part of thermoplastic elastomer, super smooth/anti-blocking 1 part of masterbatch;
  • the mass fraction ratio of the three components is: homopolypropylene PP12 parts, 1 part of antibacterial masterbatch, 1 part of rapid migration antistatic masterbatch;
  • the mass fraction ratio of the three components is: 26 parts of homopolypropylene PP, 1 part of antistatic/smooth masterbatch, and 6 parts of the master batch.
  • the upper layer accounts for 12% of the total mass
  • the middle and upper layers account for 18% of the total mass
  • the center layer accounts for 50% of the total mass
  • the middle and lower layers account for 12% of the total mass
  • the lower layer accounts for 8% of the total mass
  • the mass fraction ratio of the three components is: 9 parts of binary copolymerized polypropylene, 1.5 parts of thermoplastic elastomer, super smooth/anti-blocking master batch 1.6 copies;
  • the mass fraction ratio of the three components is: 13 parts of homopolypropylene PP, 1.5 parts of antibacterial masterbatch, and 1.8 parts of rapid migration antistatic masterbatch;
  • the mass fraction ratio of the three components is: 28 parts of homopolypropylene PP, 1.5 parts of antistatic/smooth masterbatch, and 8 parts of the master batch.
  • the upper layer accounts for 14% of the total mass
  • the middle and upper layers account for 20% of the total mass
  • the center layer accounts for 38% of the total mass
  • the middle and lower layers account for 13% of the total mass
  • the lower layer accounts for 15% of the total mass
  • the mass fraction ratio of the three components is: 10 parts of binary copolymer polypropylene, 2.2 parts of thermoplastic elastomer, super smooth/anti-blocking master batch 2.4 copies;
  • the mass fraction ratio of the three components is: 14 parts of homopolypropylene PP, 2.5 parts of antibacterial master batch, and 2.8 parts of rapid migration antistatic masterbatch;
  • the mass fraction ratio of the three components is: 30 parts of homopolypropylene PP, 2.5 parts of antistatic/smooth masterbatch, and 10 parts of the master batch.
  • Other aspects of this embodiment are the same as those of the first embodiment.
  • the upper layer accounts for 15% of the total mass
  • the middle and upper layers account for 21% of the total mass
  • the center layer accounts for 42% of the total mass
  • the middle and lower layers account for 13% of the total mass
  • the lower layer accounts for 9% of the total mass
  • the mass fraction ratio of the three components is: 1 part of binary copolymerized polypropylene, 3.5 parts of thermoplastic elastomer, super smooth/anti-blocking master batch 3.5 servings;
  • the mass fraction ratio of the three components is: 13.5 parts of homopolypropylene PP, 3.5 parts of antibacterial masterbatch, and 3.5 parts of rapid migration antistatic masterbatch;
  • the mass fraction ratio of the three components is: 32.5 parts of homopolypropylene PP, 4.5 parts of antistatic/smooth masterbatch, and 20 parts of the master batch.
  • a method of manufacturing a multi-functional BOPP cigarette packaging film comprising the steps of:
  • the multifunctional BOPP cigarette packaging film the upper layer is a binary copolymer polypropylene surface layer, and the middle upper layer and the middle middle layer are both homopolypropylene antibacterial layer, the center The layer is a homopolymer polypropylene reinforcing agent layer, and the lower layer is a bottom layer of a binary copolymer polypropylene;
  • the upper layer accounts for 8 ⁇ 15% of the total mass
  • the middle and upper layers account for 12 ⁇ 21% of the total mass
  • the central layer accounts for 38 ⁇ 50% of the total mass
  • the middle and lower layers account for 12 ⁇ 21% of the total mass
  • the lower layer accounts for 8 ⁇ 21% of the total mass.
  • the binary copolymerized polypropylene surface layer and the binary copolymerized polypropylene bottom layer respectively comprise a binary copolymerized polypropylene, a thermoplastic elastomer, and a super-slip/anti-blocking masterbatch, and the mass fraction of the three components The ratio is: 7 ⁇ 11 parts of binary copolymer polypropylene, 0.5 ⁇ 3.5 parts of thermoplastic elastomer, 0.5 ⁇ 3.5 parts of super smooth/anti-blocking masterbatch;
  • the homopolypropylene antibacterial agent layer comprises homopolypropylene PP, antibacterial masterbatch and rapid migration Antistatic masterbatch, the mass fraction ratio of the three components is: 11 ⁇ 14 parts of homopolypropylene PP, 0.5 ⁇ 3.5 parts of antibacterial masterbatch, 0.5 ⁇ 3.5 parts of fast-moving antistatic masterbatch;
  • the homopolymer polypropylene reinforcing agent layer comprises a homopolypropylene PP, an antistatic/slip masterbatch and a special reinforcing masterbatch, and the mass fraction ratio of the three components is: homopolypropylene PP25.5 ⁇ 32.5 parts, antistatic/slip masterbatch 0.5 ⁇ 4.5 parts, especially 5 ⁇ 20 parts of masterbatch;
  • film forming process using coextrusion biaxial stretching method, specifically including the following process;
  • the prepared mixture is fed into five extruders through a feeder, and the five extruders respectively correspond to the upper layer, the middle layer, the center layer, the middle layer and the lower layer, and are extruded through a molten state. After multiple filters, it enters the T-die and the melt is extruded through the die lip;
  • the manufacturing method further includes the following steps:
  • aging treatment The large-volume film is placed on the film-receiving frame for 24 hours aging treatment;
  • the manufacturing method further includes the following steps:
  • the slitted small roll film is used for anti-counterfeiting printing on the film color printing machine with fluorescent anti-counterfeiting ink and color ink, and is automatically dried during the printing process;
  • the raw materials are sent to the batching machine through the spiral conveying and the vibration conveying, and the ingredients are uniformly distributed in the ingredients; and the mixture is conveyed by the feeding machine. Go to the silo of the extruder corresponding to each layer.
  • the upper layer accounts for 8% of the total mass
  • the middle and upper layers account for 12% of the total mass
  • the center layer accounts for 48% of the total mass
  • the middle and lower layers account for 20% of the total mass
  • the lower layer accounts for 12% of the total mass
  • the mass fraction ratio of the three components is: 2 parts of binary copolymerized polypropylene, 0.5 part of thermoplastic elastomer, super smooth/anti-blocking 0.5 parts of masterbatch;
  • the mass fraction ratio of the three components is: 11 parts of homopolypropylene PP, 0.5 part of antibacterial master batch, and 0.5 part of rapid migration antistatic masterbatch;
  • the mass fraction ratio of the three components is: 25.5 parts of homopolypropylene PP, 0.5 parts of antistatic/smooth masterbatch, and 5 parts of the master batch.
  • the multi-functional cigarette packaging film produced in the embodiment is characterized by the combination of color ink and anti-counterfeiting ink in the design, and the color pattern of the cigarette in the film is matched, and the whole picture is bright and clear, under sunlight or ultraviolet light,
  • the anti-counterfeiting mark is incorporated into the pattern, which makes the cigarette more noble. Because the anti-counterfeiting mark is obvious and concealed, it is easy to be authenticated by consumers.
  • Main extruder ie central layer extruder, temperature control between 225 ° C ⁇ 255 ° C
  • auxiliary extruder ie upper layer extruder, middle and upper layer extruder, middle and lower layer extruder or lower layer extrusion Out of the machine, the temperature is controlled at 220 ° C ⁇ 250 ° C;
  • the temperature adjustment of the extrusion system is adjusted according to the selected MFR value of the polyester, the linear speed of the screw extrusion, and the form of the extrusion screw.
  • the temperature of the multilayer die is controlled at 235 ° C ⁇ 260 ° C ;
  • the chiller cooling water temperature is: 15 ° C ⁇ 30 ° C.
  • Preheating section 90 ° C ⁇ 125 ° C ;
  • Stretching part 70 ° C ⁇ 90 ° C;
  • Stereotype 100 ° C ⁇ 120 ° C;
  • Preheating section 160 ° C ⁇ 190 ° C;
  • Stretching part 125 ° C ⁇ 160 ° C;
  • Cooling roll cooling water temperature 15 ° C ⁇ 30 ° C;
  • Oven temperature 40 ° C ⁇ 55 ° C;
  • Ink anti-counterfeit fluorescent transparent ink and food grade color ink
  • the performance of the common cigarette film and the multifunctional BOPP cigarette packaging film of the present application is as follows: Item Unit Common smoke film Multifunctional BOPP cigarette packaging film Thickness ⁇ 23 ⁇ 0 ⁇ 1.0 18 ⁇ 4 ⁇ 1.0
  • the upper layer accounts for 10% of the total mass
  • the middle and upper layers account for 15% of the total mass
  • the center layer accounts for 45% of the total mass
  • the middle and lower layers account for 21% of the total mass
  • the lower layer accounts for 9% of the total mass
  • the mass fraction ratio of the three components is: binary copolymer polypropylene 8 parts, thermoplastic elastomer 1 part, super smooth slip/anti-blocking masterbatch 1 copy;
  • the mass fraction ratio of the three components is: 12 parts of homopolypropylene PP, 1 part of antibacterial master batch, and 1 part of rapid migration antistatic masterbatch;
  • the mass fraction ratio of the three components is: homopolypropylene PP26 parts, 1 part of antistatic/smooth masterbatch, especially 6 parts of masterbatch.
  • the upper layer accounts for 12% of the total mass
  • the middle and upper layers account for 18% of the total mass
  • the center layer accounts for 50% of the total mass
  • the middle and lower layers account for 12% of the total mass
  • the lower layer accounts for 8% of the total mass
  • the mass fraction ratio of the three components is: 9 parts of binary copolymerized polypropylene, 1.5 parts of thermoplastic elastomer, super smooth/anti-blocking master batch 1.6 copies;
  • the mass fraction ratio of the three components is: 13 parts of homopolypropylene PP, 1.5 parts of antibacterial masterbatch, and 1.8 parts of rapid migration antistatic masterbatch;
  • the mass fraction ratio of the three components is: 28 parts of homopolypropylene PP, 1.5 parts of antistatic/smooth masterbatch, and 8 parts of the master batch.
  • the upper layer accounts for 14% of the total mass
  • the middle and upper layers account for 20% of the total mass
  • the center layer accounts for 38% of the total mass
  • the middle and lower layers account for 13% of the total mass
  • the lower layer accounts for 15% of the total mass
  • the mass fraction ratio of the three components is: 10 parts of binary copolymer polypropylene, 2.2 parts of thermoplastic elastomer, super smooth/anti-blocking master batch 2.4 copies;
  • the mass fraction ratio of the three components is: 14 parts of homopolypropylene PP, 2.5 parts of antibacterial master batch, and 2.8 parts of rapid migration antistatic masterbatch;
  • the mass fraction ratio of the three components is: 30 parts of homopolypropylene PP, 2.5 parts of antistatic/smooth masterbatch, and 10 parts of the master batch.
  • Example 10 the upper layer accounts for 15% of the total mass, the middle and upper layers account for 21% of the total mass, the center layer accounts for 42% of the total mass, the middle and lower layers account for 13% of the total mass, and the lower layer accounts for 9% of the total mass;
  • the mass fraction ratio of the three components is: 1 part of binary copolymerized polypropylene, 3.5 parts of thermoplastic elastomer, super smooth/anti-blocking master batch 3.5 servings;
  • the mass fraction ratio of the three components is: 13.5 parts of homopolypropylene PP, 3.5 parts of antibacterial masterbatch, and 3.5 parts of rapid migration antistatic masterbatch;
  • the mass fraction ratio of the three components is: 32.5 parts of homopolypropylene PP, 4.5 parts of antistatic/smooth masterbatch, and 20 parts of the master batch.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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Description

说 明 书 一种多功能 B0PP烟用包装膜及其制造方法 技术领域
本发明涉及一种烟用包装膜及其制造方法。 背景技术
目前, 国内卷烟生产企业使用的烟用包装膜 (简称烟膜), 都采用双 向拉伸聚丙烯薄膜 (简称 BOPP膜), 由于 BOPP膜透明度高, 经包装后 香烟挺括、 高贵、 身价倍增, 又因 BOPP 膜价格低廉, 成本适中, 所以 在卷烟生产企业中大批量实用。
但是, 现有的 BOPP膜在长期使用中, 也发现了较多缺陷:
①由于双向拉伸的 BOPP膜, 本身存在着阻隔性能较差, 透湿性 高达 2.0g/m2 · 24H, 因而, 对卷烟防潮带来影响。 卷烟这一产品对防潮 的要求很高, 潮湿引起的霉变发展迅速, 引起卷烟的异味, 消费者一吸就 辨别出来,必然要退货。而卷烟厂和烟草公司的仓库都具有极好的防潮性 能极好, 在密封性能极好的仓库存放, 大箱卷烟不会受潮; 而零售商店因 无专门的仓库,条烟存放在简单的诸如铁皮箱等储藏容器内,零售周期又 较长, 加上南方雨水较多, 气候潮湿, 极易受潮霉变, 给企业造成很大的 损失。
②随着卷烟机械的高速发展,引进的全自动高速包装机械越来越多, 卷烟的包装速度越来越快, 因而对烟膜的要求也越来越高,原来使用老式 包装机械的烟膜都出现包装不顺的情况,原因是高速包装机械对薄膜的爽 滑性、 抗粘连性、 增韧性等都有更高的要求, 所以必须在薄膜的结构、 工 艺和配方上进行改进, 才能适应高速包装机的要求。
③包装费用是卷烟工业一笔不菲的支出,在包装质量的同等化的程度 下, 对包装物轻量化, 这是响应政府提出的节能减排的具体行动, 因此, 对烟膜在该方面的改进, 也是刻不容缓的。
④卷烟工业利润丰厚,不法分子采用冒用名牌,生产假烟获取高额利 润的事件层出不穷,消费者对卷烟的真假识别能力差,对卷烟包装的防伪 工作必须加强。
针对目前现有的烟用包装膜不能适应发展的情况, 为实现"低碳"经 济的需要, 需要对烟用包装膜进行改进, 以适用烟草工业发展的需要。 发明内容
为了克服现有的现有的烟膜包装膜的阻隔性差、透湿性过高、爽滑性 较差、不能适用高速包装机场合、成本高的不足, 本发明提供了一种阻隔 性良好、 透湿性较低、 爽滑性良好、 有效适用高速包装机场合、 成本低的 多功能 BOPP烟用包装膜及其制造方法。
本发明为了解决上述技术问题采用的技术方案是:
一种多功能 BOPP烟用包装膜, 所述的多功能长效防锈膜包括上层、 中上层、 中心层、 中下层和下层, 所述上层为二元共聚聚丙烯表面层, 所 述中上层和中下层均为均聚聚丙烯抗菌剂层、所述中心层为均聚聚丙烯增 剂挺层,所述下层为二元共聚聚丙烯底面层,所述中下层覆盖在所述下层 上, 所述中心层覆盖在所述中下层上, 所述中上层覆盖在所述中心层上, 所述上层覆盖在所述中上层上;
所述的多功能 BOPP烟用包装膜, 上层占总质量的 8~15%, 中上层 占总质量的 12~21%, 中心层占总质量的 38~50%, 中下层占总质量的 12-21%, 下层占总质量的 8~15%;
所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层,分别包括二元 共聚聚丙烯、 热塑性弹性体和超爽滑 /防粘连母料, 三个组份的质量份数 比为: 二元共聚聚丙烯 7~11份, 热塑性弹性体 0.5~3.5份, 超爽滑 /防粘 连母料 0.5~3.5份;
所述均聚聚丙烯抗菌剂层包括均聚聚丙烯 PP、 抗菌母料和快速迁移 抗静电母料, 三个组份的质量份数比为: 均聚聚丙烯 PP11~14份, 抗菌 母料 0.5~3.5份, 快速迁移抗静电母料 0.5~3.5份;
所述均聚聚丙烯增挺剂层包括均聚聚丙烯 PP、抗静电 /爽滑母料和特 别增挺母料, 三个组份的质量份数比为: 均聚聚丙烯 PP25.5~32.5份, 抗 静电 /爽滑母料 0.5~4.5份, 特别增挺母料 5~20份。
一种多功能 BOPP 烟用包装膜的制造方法, 所述制造方法包括以下 步骤:
( 1 )、 选料: 所述的多功能 BOPP烟用包装膜, 所述上层为二元共 聚聚丙烯表面层,所述中上层和中下层均为均聚聚丙烯抗菌剂层、所述中 心层为均聚聚丙烯增挺剂层, 所述下层为二元共聚聚丙烯底面层;
上层占总质量的 8~15%, 中上层占总质量的 12~21%, 中心层占总质 量的 38~50%, 中下层占总质量的 12~21%, 下层占总质量的 8~15%; 所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层,分别包括二元 共聚聚丙烯、 热塑性弹性体和超爽滑 /防粘连母料, 三个组份的质量份数 比为: 二元共聚聚丙烯 7~11份, 热塑性弹性体 0.5~3.5份, 超爽滑 /防粘 连母料 0.5~3.5份;
所述均聚聚丙烯抗菌剂层包括均聚聚丙烯 PP、 抗菌母料和快速迁移 抗静电母料, 三个组份的质量份数比为: 均聚聚丙烯 PP11~14份, 抗菌 母料 0.5~3.5份, 快速迁移抗静电母料 0.5~3.5份; 所述均聚聚丙烯增挺剂层包括均聚聚丙烯 PP、 抗静电 /爽滑母料和特 别增挺母料, 三个组份的质量份数比为: 均聚聚丙烯 PP25.5~32.5份, 抗 静电 /爽滑母料 0.5~4.5份, 特别增挺母料 5~20份;
(2)、 制膜工序: 采用共挤双向拉伸法, 具体包括以下过程;
(2.1 )、 将配好的混合料, 经送料机送入五台挤出机, 所述五台挤出 机分别对应上层、 中上层、 中心层、 中下层和下层, 经过熔融状态挤出, 经多次过滤器过滤, 进入 T型模头, 熔体经模唇挤出;
(2.2 )、 流涎: 从模唇挤出的熔体紧贴骤冷辊表面, 在骤冷辊和水浴 及导向辊的作用下形成流涎膜;
(2.4)、 拉伸: 将流涎膜引出, 先进行纵向拉伸, 再进行横向拉伸;
(2.5 )、 冷却成型;
(2.6)、 牵引收卷: 经过切边, 测厚以及电晕处理, 将薄膜卷为筒状 膜卷, 制得多功能 BOPP烟用包装膜。
进一步, 所述制造方法还包括以下步骤:
(3 ) 整理工序:
(3.1 )、 时效处理: 将大卷薄膜放在收膜架上, 进行 24小时时效处 理;
(3.2 )、 将时效处理后的大卷膜, 按照供货合同进行分切加工, 得到 小卷膜。
再进一步, 所述制造方法还包括以下步骤:
(4) 印刷工序
(4.1 ), 根据卷烟厂设计需印刷的防伪彩色图案, 交激光制版工厂进 行版辊制版;
(4.2 ) 将分切好的小卷膜在薄膜彩印机上用荧光防伪油墨和彩墨配 合进行防伪印刷, 并在印刷过程中自动烘干; (4.3 ) 防伪彩膜自动收卷;
(4.4) 送到分切机进行分切, 制得卷烟厂所需要的包装膜。
更进一步, 所述步骤 (1 ) 中, 依照各层的配料表, 通过螺旋输送和 振动输送, 把原料送入配料机, 进行配料, 配料中达到均匀一致; 再通过 上料机把混合料输送到与各层对应的挤出机的料仓中。
所述步骤 (2.3 ) 中, 在纵向拉伸机构的不同轴速的拉伸辊和中间多 对加热辊的作用下, 纵向得到拉伸; 在横向区域, 链条夹具夹住两边, 沿 着逐渐变宽的轨道向前移动, 经过加热区和定型区, 薄膜宽度达到要求, 经过纵向拉伸和横向拉升后达到设定的厚度和宽度。
本发明的有益效果主要体现在: ①有效地解决 B0PP烟用包装膜因阻 隔性差,而引起的潮湿气体吸入造成的卷烟霉变现象,彻底解除了卷烟保 质期内发霉变质的问题, 有效保证卷烟质量, 降低企业的损失。
②有效地解决了 B0PP烟膜不能适用进口高速包装机包装的情况, 在 产品的结构、 原料、 配方和工艺进行全面改进, 实现高速包装正常化。
③对烟膜生产的同时,对烟膜进行防伪标示和商标的处理,使得销售 出去的产品, 消费者能够识别真伪, 一目了然。
说明书附图
图 1是多功能 BOPP烟用包装膜结构示意图。
图 2 是多功能 BOPP烟用包装膜的制造方法工艺流程图。
具体实施方式
下面结合具体实施例对本发明进行进一步描述,但本发明的保护范围 并不仅限于此: 实施例 1
参照图 1, 一种多功能 BOPP烟用包装膜, 所述的多功能长效防锈膜 包括上层 1、 中上层 2、 中心层 3、 中下层 4和下层 5, 所述上层 1为二元 共聚聚丙烯表面层, 所述中上层 2和中下层 4均为均聚聚丙烯抗菌剂层、 所述中心层 3为均聚聚丙烯增挺剂层,所述下层 5为二元共聚聚丙烯底面 层, 所述中下层覆盖在所述下层上, 所述中心层覆盖在所述中下层上, 所 述中上层覆盖在所述中心层上, 所述上层覆盖在所述中上层上;
所述的多功能 BOPP烟用包装膜, 上层占总质量的 8~15%, 中上层 占总质量的 12~21%, 中心层占总质量的 38~50%, 中下层占总质量的 12-21%, 下层占总质量的 8~15%;
所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层,分别包括二元 共聚聚丙烯、 热塑性弹性体和超爽滑 /防粘连母料, 三个组份的质量份数 比为: 二元共聚聚丙烯 7~11份, 热塑性弹性体 0.5~3.5份, 超爽滑 /防粘 连母料 0.5~3.5份;
所述均聚聚丙烯抗菌剂层包括均聚聚丙烯 PP、 抗菌母料和快速迁移 抗静电母料, 三个组份的质量份数比为: 均聚聚丙烯 PP11~14份, 抗菌 母料 0.5~3.5份, 快速迁移抗静电母料 0.5~3.5份;
所述均聚聚丙烯增挺剂层包括均聚聚丙烯 PP、抗静电 /爽滑母料和特 别增挺母料, 三个组份的质量份数比为: 均聚聚丙烯 PP25.5~32.5份, 抗 静电 /爽滑母料 0.5~4.5份, 特别增挺母料 5~20份。
本实施例中, 上层占总质量的 8%, 中上层占总质量的 12%, 中心层 占总质量的 48%, 中下层占总质量的 20%, 下层占总质量的 12%;
所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层中,其中,二元 共聚聚丙烯采用 BSELL 公司出品, 牌号 7384PP , 等规度必须达到 99~99.5%的 PP; 热塑性弹性体采用 SEBS荷兰壳牌化学公司出品, 牌号 G1652; 超爽滑 /防粘连母料采用德国康斯坦普工厂出品, 牌号 AG6554PPC; 三个组份的质量份数比为: 二元共聚聚丙烯 7份, 热塑性 弹性体 0.5份, 超爽滑 /防粘连母料 0.5份;
所述均聚聚丙烯抗菌剂层中, 其中, 均聚聚丙烯 PP采用 BSELL公 司出品, 牌号 8182PP, 要求树脂特性粘度在 0.58~0.65之间, 分子量分布 范围窄, 波动在 ± 0.01 之间, 杂质和凝胶含量特别低, 含量 0.2%; 抗 菌母料采用上海维来新材料有限公司出品, 牌号 PP-BMFZ; 快速迁移抗 静电母料采用德国康斯坦普工厂出品, 牌号 AT4.63PP; 三个组份的质量 份数比为: 均聚聚丙烯 PP11份, 抗菌母料 0.5份, 快速迁移抗静电母料 0.5份;
所述均聚聚丙烯增挺剂层中, 其中, 均聚聚丙烯 PP采用 BSELL公 司出品, 牌号 8182PP, 要求树脂特性粘度在 0.58~0.65之间, 分子量分布 范围窄, 波动在 ± 0.01 之间, 杂质和凝胶含量特别低, 含量 0.2%; 抗 静电 /爽滑母料采用德国康斯坦普工厂出品, 牌号 ATG4504PP; 特别增挺 母料采用德国康斯坦普工厂出品,牌号 MA0936PP,三个组份的质量份数 比为: 均聚聚丙烯 PP25.5份, 抗静电 /爽滑母料 0.5份, 特别增挺母料 5 份。
本实施例的多功能烟用包装膜,实现在常规包装的基础上节约原材料 20%的目标, 所生产的烟膜更薄, 透明度更高, 抗菌性能更好, 爽滑性抗 粘连性更好, 薄膜增挺度更挺, 采用以下措施实现性能转换:
(一)首先, 在实施超薄型多功能烟膜时, 抓好原料这一关是制取超 薄型烟膜的关键条件, 由于要制造的比常规烟膜节约 20%的材料, 薄膜 必须做的更薄, 质量必须做的更好, 才能达到经受住高速包装机的运作。 所以不洁净和不符合要求的原料,将导致生产失败。我们反复进行聚酯的 选择, 并进行聚酯粘性的试验, 确保聚酯和特性粘度的平衡点。 因为聚酯 特性粘度过大, 则拉伸力需要大, 容易造成拉伸不均匀, 厚度公差控制不 好; 如果特性粘度小, 则分子量小, 造成结晶速度快, 破膜率上升。 素以 选择 PP聚酯大小对于超薄型 BOPP烟膜生产成功率十分重要; 特性粘度 应选择 0.58~0.65之间最合适; 聚酯 PP分子量的波动范围, 必须小于等 于 ± 0.01 之间, 杂质和凝胶含量 0.02%。 二元聚酯等规格必须达到 99~99.5%之间。 以上条件是确保实现超薄型烟用包装膜生产的基本条件。
(二)对于添加的母料, 必须选择超细目数且分散均匀的母料, 显微 镜下观察压片试验, 母料的粒径小于 1.5μηι, 且能得到充分的分散均匀。 德国康斯坦普工厂出品的母料质量好,符合超薄拉伸的要求。而且该厂产 品能减少对超薄产品的雾度、 霜花、 白点的影响, 增加薄膜的光学性能, 因而列为首选。
(三) 对原有双向拉伸进口 ΒΟΡΡ 生产线进行必要的改造, 以确超 薄烟膜的正常生产, 具体措施如下:
Α、 将生产线中的熔体经过滤器进行大幅加密, 由原生产 22μηι 的 ΒΟΡΡ烟膜粗过滤器 30~40μηι和精过滤 20~30μηι, 加密改为优质盘式碟 片过滤器, 粗过滤 25μηι, 精过滤 15μηι, 这样达到没有较大杂质和凝胶 造成拉伸超薄膜时破膜。
Β、 通过对纵向拉伸后冷却辊的改造, 增加冷却辊直径和冷却流道结 构的设计,使纵向拉伸后能快速冷却控制结晶度达到最小值,为横向拉伸 创造最佳的拉伸引力条件。
C、 对横向拉升及热定型风道系统进行改造, 精确调节风场的平衡性 和温度的均匀性, 整个横向拉伸内的风场风压的均匀性和温度的均与性, 对 BOPP 薄膜的拉升均匀开展十分重要, 是薄膜后续均匀性和连续生产 正常性的关键控制点。
D、 超薄 BOPP 烟膜生产过程中良好的收卷工序也非常重要, 采用 BRUECKER最新设计的精确丝杆和线性步进电机控制的收卷技术, 使超 薄型 BOPP烟膜收卷达到松紧一致, 表面光滑无皱痕。
E、 为适应超薄型 BOPP烟膜的连续生产, 对横向拉伸的夹具进行更 换, 使夹具开口相应范围变小, 在生产烟膜时, 不致造成薄膜边抓不住而 造成破膜。
本实施例的抗菌母料的性能:
抗菌母料 PP-BMFZ是利用分子组装的抗菌技术, 在基本聚酯聚丙烯 分子上,组装经优选的抗菌功能团而制成的聚丙烯抗菌母料。抗菌母料经 一定比例加入聚酯, 经双向拉伸制成薄膜, 抗菌功能团有极强的极性, 最 终功能团陆续聚集在薄膜表面,产生抗菌杀菌效果,该抗菌母料安全无毒, 属于无毒级和无刺激性物质, 适合食品包装; 该母料并具有以下特性:
A抗菌光谱高效
对多种有害的细菌及霉菌、病毒有极为优异的抑制效果,例如对人体 和视频有害的大肠杆菌和金黄色葡萄球菌抗菌率达到 99.92和 99.99%。
B有良好的防霉性, 对黑曲霉、 黄曲霉、 杂色曲霉、 球毛壳霉、 出芽 短梗媒、 桔青霉、 绿色木霉等测试, 防霉效果达到一级标准。
C抗菌效果长效, 只要薄膜存在, 薄膜的抗菌效果不会衰退。
D抗菌母料耐高温, 故高温挤出不会改变其抗菌效果。
实施例 2
本实施例中, 上层占总质量的 10%, 中上层占总质量的 15%, 中心 层占总质量的 45%, 中下层占总质量的 21%, 下层占总质量的 9%;
所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层中,三个组份的 质量份数比为: 二元共聚聚丙烯 8份, 热塑性弹性体 1份, 超爽滑 /防粘 连母料 1份;
所述均聚聚丙烯抗菌剂层中,三个组份的质量份数比为:均聚聚丙烯 PP12份, 抗菌母料 1份, 快速迁移抗静电母料 1份;
所述均聚聚丙烯增挺剂层中,三个组份的质量份数比为:均聚聚丙烯 PP26份, 抗静电 /爽滑母料 1份, 特别增挺母料 6份。
本实施例的其他方案均与实施例 1相同。
实施例 3
本实施例中, 上层占总质量的 12%, 中上层占总质量的 18%, 中心 层占总质量的 50%, 中下层占总质量的 12%, 下层占总质量的 8%; 所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层中,三个组份的 质量份数比为: 二元共聚聚丙烯 9份, 热塑性弹性体 1.5份, 超爽滑 /防 粘连母料 1.6份;
所述均聚聚丙烯抗菌剂层中,三个组份的质量份数比为:均聚聚丙烯 PP13份, 抗菌母料 1.5份, 快速迁移抗静电母料 1.8份;
所述均聚聚丙烯增挺剂层中,三个组份的质量份数比为:均聚聚丙烯 PP28份, 抗静电 /爽滑母料 1.5份, 特别增挺母料 8份。
本实施例的其他方案均与实施例 1相同。
实施例 4
本实施例中, 上层占总质量的 14%, 中上层占总质量的 20%, 中心 层占总质量的 38%, 中下层占总质量的 13%, 下层占总质量的 15%; 所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层中,三个组份的 质量份数比为: 二元共聚聚丙烯 10份, 热塑性弹性体 2.2份, 超爽滑 /防 粘连母料 2.4份;
所述均聚聚丙烯抗菌剂层中,三个组份的质量份数比为:均聚聚丙烯 PP14份, 抗菌母料 2.5份, 快速迁移抗静电母料 2.8份;
所述均聚聚丙烯增挺剂层中,三个组份的质量份数比为:均聚聚丙烯 PP30份, 抗静电 /爽滑母料 2.5份, 特别增挺母料 10份。 本实施例的其他方案均与实施例 1相同。
实施例 5
本实施例中, 上层占总质量的 15%, 中上层占总质量的 21%, 中心 层占总质量的 42%, 中下层占总质量的 13%, 下层占总质量的 9%; 所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层中,三个组份的 质量份数比为: 二元共聚聚丙烯 11份, 热塑性弹性体 3.5份, 超爽滑 /防 粘连母料 3.5份;
所述均聚聚丙烯抗菌剂层中,三个组份的质量份数比为:均聚聚丙烯 PP13.5份, 抗菌母料 3.5份, 快速迁移抗静电母料 3.5份;
所述均聚聚丙烯增挺剂层中,三个组份的质量份数比为:均聚聚丙烯 PP32.5份, 抗静电 /爽滑母料 4.5份, 特别增挺母料 20份。
本实施例的其他方案均与实施例 1相同。
实施例 6
参照图 1和图 2, 一种多功能 BOPP烟用包装膜的制造方法, 所述制 造方法包括以下步骤:
( 1 )、 选料: 所述的多功能 BOPP烟用包装膜, 所述上层为二元共 聚聚丙烯表面层,所述中上层和中下层均为均聚聚丙烯抗菌剂层、所述中 心层为均聚聚丙烯增挺剂层, 所述下层为二元共聚聚丙烯底面层;
上层占总质量的 8~15%, 中上层占总质量的 12~21%, 中心层占总质 量的 38~50%, 中下层占总质量的 12~21%, 下层占总质量的 8~15%; 所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层,分别包括二元 共聚聚丙烯、 热塑性弹性体和超爽滑 /防粘连母料, 三个组份的质量份数 比为: 二元共聚聚丙烯 7~11份, 热塑性弹性体 0.5~3.5份, 超爽滑 /防粘 连母料 0.5~3.5份;
所述均聚聚丙烯抗菌剂层包括均聚聚丙烯 PP、 抗菌母料和快速迁移 抗静电母料, 三个组份的质量份数比为: 均聚聚丙烯 PP11~14份, 抗菌 母料 0.5~3.5份, 快速迁移抗静电母料 0.5~3.5份;
所述均聚聚丙烯增挺剂层包括均聚聚丙烯 PP、抗静电 /爽滑母料和特 别增挺母料, 三个组份的质量份数比为: 均聚聚丙烯 PP25.5~32.5份, 抗 静电 /爽滑母料 0.5~4.5份, 特别增挺母料 5~20份;
(2 )、 制膜工序: 采用共挤双向拉伸法, 具体包括以下过程;
(2.1 )、 将配好的混合料, 经送料机送入五台挤出机, 所述五台挤出 机分别对应上层、 中上层、 中心层、 中下层和下层, 经过熔融状态挤出, 经多次过滤器过滤, 进入 T型模头, 熔体经模唇挤出;
(2.2 )、 流涎: 从模唇挤出的熔体紧贴骤冷辊表面, 在骤冷辊和水浴 及导向辊的作用下形成流涎膜;
(2.4 )、 拉伸: 将流涎膜引出, 先进行纵向拉伸, 再进行横向拉伸;
(2.5 )、 冷却成型;
(2.6 )、 牵引收卷: 经过切边, 测厚以及电晕处理, 将薄膜卷为筒状 膜卷, 制得多功能 BOPP烟用包装膜。
所述制造方法还包括以下步骤:
(3 ) 整理工序:
(3.1 )、 时效处理: 将大卷薄膜放在收膜架上, 进行 24小时时效处 理;
(3.2 )、 将时效处理后的大卷膜, 按照供货合同进行分切加工, 得到 小卷膜。
所述制造方法还包括以下步骤:
(4) 印刷工序
(4.1 ), 根据卷烟厂设计需印刷的防伪彩色图案, 交计算制版工厂进 行版辊制版; (4.2 ) 将分切好的小卷膜在薄膜彩印机上用荧光防伪油墨和彩墨配 合进行防伪印刷, 并在印刷过程中自动烘干;
(4.3 ) 防伪彩膜自动收卷;
(4.4 ) 送到分切机进行分切, 制得卷烟厂所需要的包装膜。
更进一步, 所述步骤 (1 ) 中, 依照各层的配料表, 通过螺旋输送和 振动输送, 把原料送入配料机, 进行配料, 配料中达到均匀一致; 再通过 上料机把混合料输送到与各层对应的挤出机的料仓中。
本实施例中, 上层占总质量的 8%, 中上层占总质量的 12%, 中心层 占总质量的 48%, 中下层占总质量的 20%, 下层占总质量的 12%;
所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层中,三个组份的 质量份数比为: 二元共聚聚丙烯 7份, 热塑性弹性体 0.5份, 超爽滑 /防 粘连母料 0.5份;
所述均聚聚丙烯抗菌剂层中,三个组份的质量份数比为:均聚聚丙烯 PP11份, 抗菌母料 0.5份, 快速迁移抗静电母料 0.5份;
所述均聚聚丙烯增挺剂层中,三个组份的质量份数比为:均聚聚丙烯 PP25.5份, 抗静电 /爽滑母料 0.5份, 特别增挺母料 5份。
本实施例生产的多功能烟用包装膜,由于在设计中运用彩墨和防伪油 墨结合在一起的思路, 配合膜内的香烟彩色图案, 整幅图画鲜亮明确, 在 太阳光或紫外灯下, 防伪标记融入图案中, 更加呈现香烟的高贵, 由于防 伪标识明显又隐蔽, 易于被广大消费者鉴别真伪。
本实施例的工艺参数为:
A挤出系统
主挤出机, 即中心层挤出机, 温度控制在 225°C~255°C之间, 辅挤出 机, 即上层挤出机、 中上层挤出机、 中下层挤出机或下层挤出机, 温度控 制在 220°C~250°C ; 挤出系统的温度调整, 根据选用聚酯 MFR值, 结合螺紋挤出的线速 度, 以及挤出螺杆的形式进行综合因素评价情况后进行调整、
B厚片成型系统
多层模头的温度控制在 235°C~260°C;
激冷辊冷却水温度为: 15°C~30°C。
C纵向拉伸系统
预热部分: 90°C~125°C;
拉伸部分: 70°C~90°C;
定型部分: 100°C~120°C;
拉伸倍数: 0.8~3.5倍;
D横向拉伸系统
预热部分: 160°C~190°C;
拉伸部分: 125°C~160°C;
定型部分: 95°C~160°C;
拉伸倍数: 5.5~11倍;
E牵引
冷却辊冷却水温度: 15°C~30°C;
F印刷
速度: 150m/min;
烘箱温度: 40°C~55°C;
油墨: 防伪荧光透明油墨和食品级彩色油墨;
普通烟膜与本申请的多功能 BOPP烟用包装膜的性能比较,如下表 1: 项目 单位 普通烟膜 多功能 BOPP烟用包装膜 厚度 μπι 23·0±1.0 18·4±1.0
拉伸强度 Mpa 纵向: 141 纵向: 149 横向: 252 横向: 258 断裂伸长率 % 纵向: 129 纵向: 115
横向: 67 横向: 68
热收缩率 % 纵向: 4.6 纵向: 4.7
横向: 4.6 横向: 4.5
动摩擦系数 0.27 0.21
湿润 mN/m 4 3.9
雾度 % 1.9 1.7
光泽度 % 9.1 10.1
热封强度 N/15mm 2.6 2.8
透湿量 g/m2 · 24h 1.8 1.6
抗菌率 % 99.93
抗病毒率 % 98.11
抗霉菌率 % 100
产品防伪能力 具有良好的防伪识别能力 表 1。
实施例 7
本实施例中, 上层占总质量的 10%, 中上层占总质量的 15%, 中心 层占总质量的 45%, 中下层占总质量的 21%, 下层占总质量的 9%; 所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层中,三个组份的 质量份数比为: 二元共聚聚丙烯 8份, 热塑性弹性体 1份, 超爽滑 /防粘 连母料 1份;
所述均聚聚丙烯抗菌剂层中,三个组份的质量份数比为:均聚聚丙烯 PP12份, 抗菌母料 1份, 快速迁移抗静电母料 1份;
所述均聚聚丙烯增挺剂层中,三个组份的质量份数比为:均聚聚丙烯 PP26份, 抗静电 /爽滑母料 1份, 特别增挺母料 6份。
本实施例的其他方案均与实施例 6相同。
实施例 8
本实施例中, 上层占总质量的 12%, 中上层占总质量的 18%, 中心 层占总质量的 50%, 中下层占总质量的 12%, 下层占总质量的 8%; 所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层中,三个组份的 质量份数比为: 二元共聚聚丙烯 9份, 热塑性弹性体 1.5份, 超爽滑 /防 粘连母料 1.6份;
所述均聚聚丙烯抗菌剂层中,三个组份的质量份数比为:均聚聚丙烯 PP13份, 抗菌母料 1.5份, 快速迁移抗静电母料 1.8份;
所述均聚聚丙烯增挺剂层中,三个组份的质量份数比为:均聚聚丙烯 PP28份, 抗静电 /爽滑母料 1.5份, 特别增挺母料 8份。
本实施例的其他方案均与实施例 6相同。
实施例 9
本实施例中, 上层占总质量的 14%, 中上层占总质量的 20%, 中心 层占总质量的 38%, 中下层占总质量的 13%, 下层占总质量的 15%; 所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层中,三个组份的 质量份数比为: 二元共聚聚丙烯 10份, 热塑性弹性体 2.2份, 超爽滑 /防 粘连母料 2.4份;
所述均聚聚丙烯抗菌剂层中,三个组份的质量份数比为:均聚聚丙烯 PP14份, 抗菌母料 2.5份, 快速迁移抗静电母料 2.8份;
所述均聚聚丙烯增挺剂层中,三个组份的质量份数比为:均聚聚丙烯 PP30份, 抗静电 /爽滑母料 2.5份, 特别增挺母料 10份。
本实施例的其他方案均与实施例 6相同。
实施例 10 本实施例中, 上层占总质量的 15% , 中上层占总质量的 21% , 中心 层占总质量的 42% , 中下层占总质量的 13%, 下层占总质量的 9%; 所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层中,三个组份的 质量份数比为: 二元共聚聚丙烯 11份, 热塑性弹性体 3.5份, 超爽滑 /防 粘连母料 3.5份;
所述均聚聚丙烯抗菌剂层中,三个组份的质量份数比为:均聚聚丙烯 PP13.5份, 抗菌母料 3.5份, 快速迁移抗静电母料 3.5份;
所述均聚聚丙烯增挺剂层中,三个组份的质量份数比为:均聚聚丙烯 PP32.5份, 抗静电 /爽滑母料 4.5份, 特别增挺母料 20份。
本实施例的其他方案均与实施例 6相同。

Claims

权 利 要 求 书
1、 一种多功能 BOPP烟用包装膜, 其特征在于: 所述的多功能长 效防锈膜包括上层、 中上层、 中心层、 中下层和下层, 所述上层为二元 共聚聚丙烯表面层,所述中上层和中下层均为均聚聚丙烯抗菌剂层、所 述中心层为均聚聚丙烯增挺剂层, 所述下层为二元共聚聚丙烯底面层, 所述中下层覆盖在所述下层上,所述中心层覆盖在所述中下层上,所述 中上层覆盖在所述中心层上, 所述上层覆盖在所述中上层上;
所述的多功能 BOPP烟用包装膜, 上层占总质量的 8~15%, 中上 层占总质量的 12~21%, 中心层占总质量的 38~50%, 中下层占总质量 的 12~21%, 下层占总质量的 8~15%;
所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层,分别包括二 元共聚聚丙烯、 热塑性弹性体和超爽滑 /防粘连母料, 三个组份的质量 份数比为: 二元共聚聚丙烯 7~11份, 热塑性弹性体 0.5~3.5份, 超爽 滑 /防粘连母料 0.5~3.5份;
所述均聚聚丙烯抗菌剂层包括均聚聚丙烯 PP、 抗菌母料和快速迁 移抗静电母料, 三个组份的质量份数比为: 均聚聚丙烯 PP11~14份, 抗菌母料 0.5~3.5份, 快速迁移抗静电母料 0.5~3.5份;
所述均聚聚丙烯增挺剂层包括均聚聚丙烯 PP、 抗静电 /爽滑母料和 特别增挺母料,三个组份的质量份数比为:均聚聚丙烯 PP25.5~32.5份, 抗静电 /爽滑母料 0.5~4.5份, 特别增挺母料 5~20份。
2、一种如权利要求 1所述的多功能 BOPP烟用包装膜的制造方法, 其特征在于: 所述制造方法包括以下步骤:
( 1 )、选料: 所述的多功能 BOPP烟用包装膜, 所述上层为二元共 聚聚丙烯表面层,所述中上层和中下层均为均聚聚丙烯抗菌剂层、所述 中心层为均聚聚丙烯增挺剂层, 所述下层为二元共聚聚丙烯底面层; 上层占总质量的 8~15%, 中上层占总质量的 12~21%, 中心层占总 质量的 38~50%, 中下层占总质量的 12~21%, 下层占总质量的 8~15%; 所述二元共聚聚丙烯表面层和二元共聚聚丙烯底面层,分别包括二 元共聚聚丙烯、 热塑性弹性体和超爽滑 /防粘连母料, 三个组份的质量 份数比为: 二元共聚聚丙烯 7~11份, 热塑性弹性体 0.5~3.5份, 超爽 滑 /防粘连母料 0.5~3.5份;
所述均聚聚丙烯抗菌剂层包括均聚聚丙烯 PP、 抗菌母料和快速迁 移抗静电母料, 三个组份的质量份数比为: 均聚聚丙烯 PP11~14份, 抗菌母料 0.5~3.5份, 快速迁移抗静电母料 0.5~3.5份;
所述均聚聚丙烯增挺剂层包括均聚聚丙烯 PP、 抗静电 /爽滑母料和 特别增挺母料,三个组份的质量份数比为:均聚聚丙烯 PP25.5~32.5份, 抗静电 /爽滑母料 0.5~4.5份, 特别增挺母料 5~20份;
(2)、 制膜工序: 采用共挤双向拉伸法, 具体包括以下过程;
(2.1 )、 将配好的混合料, 经送料机送入五台挤出机, 所述五台挤 出机分别对应上层、 中上层、 中心层、 中下层和下层, 经过熔融状态挤 出, 经多次过滤器过滤, 进入 T型模头, 熔体经模唇挤出;
(2.2 )、 流涎: 从模唇挤出的熔体紧贴骤冷辊表面, 在骤冷辊和水 浴及导向辊的作用下形成流涎膜;
(2.4 )、拉伸: 将流涎膜引出, 先进行纵向拉伸, 再进行横向拉伸;
(2.5 )、 冷却成型;
(2.6 )、 牵引收卷: 经过切边, 测厚以及电暈处理, 将薄膜卷为筒 状膜卷, 制得多功能 BOPP烟用包装膜。
3、 如权利要求 2所述的多功能 BOPP烟用包装膜的制造方法, 其 特征在于: 所述制造方法还包括以下步骤:
( 3 ) 整理工序:
( 3.1 )、 时效处理: 将大卷薄膜放在收膜架上, 进行 24小时时效 处理;
(3.2)、 将时效处理后的大卷膜, 按照供货合同进行分切加工, 得 到小卷膜。
4、 如权利要求 3所述的多功能 BOPP烟用包装膜的制造方法, 其 特征在于: 所述制造方法还包括以下步骤:
(4) 印刷工序
(4.1 ) 根据卷烟厂设计需印刷的防伪彩色图案, 交激光制版工厂 进行版辊制版;
(4.2) 将分切好的小卷膜在薄膜彩印机上用荧光防伪油墨和彩墨 配合进行防伪印刷, 并在印刷过程中自动烘干;
(4.3 ) 防伪彩膜自动收卷;
(4.4) 送到分切机进行分切, 制得卷烟厂所需要的包装膜。
5、 如权利要求 2~4之一所述的多功能 BOPP烟用包装膜的制造方 法, 其特征在于: 所述步骤 (1 ) 中, 依照各层的配料表, 通过螺旋输 送和振动输送, 把原料送入配料机, 进行配料, 配料中达到均匀一致; 再通过上料机把混合料输送到与各层对应的挤出机的料仓中。
6、 如权利要求 2~4之一所述的多功能 BOPP烟用包装膜的制造方 法, 其特征在于: 所述步骤 (2.3 ) 中, 在纵向拉伸机构的不同轴速的 拉伸辊和中间多对加热辊的作用下, 纵向得到拉伸; 在横向区域, 链条 夹具夹住两边, 沿着逐渐变宽的轨道向前移动, 经过加热区和定型区, 薄膜宽度达到要求, 经过纵向拉伸和横向拉升后达到设定的厚度和宽 度。
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CN102085735B (zh) 2013-03-27
US20130017403A1 (en) 2013-01-17
US9944007B2 (en) 2018-04-17
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US9144931B2 (en) 2015-09-29

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