WO2021169428A1 - Matte pe material, manufacturing method for same, and applications thereof - Google Patents

Matte pe material, manufacturing method for same, and applications thereof Download PDF

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Publication number
WO2021169428A1
WO2021169428A1 PCT/CN2020/130126 CN2020130126W WO2021169428A1 WO 2021169428 A1 WO2021169428 A1 WO 2021169428A1 CN 2020130126 W CN2020130126 W CN 2020130126W WO 2021169428 A1 WO2021169428 A1 WO 2021169428A1
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WIPO (PCT)
Prior art keywords
layer
matte
parts
matting
resin
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PCT/CN2020/130126
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French (fr)
Chinese (zh)
Inventor
李成
黄险波
叶南飚
李力
王斌
陈平绪
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金发科技股份有限公司
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Priority to KR1020227033032A priority Critical patent/KR20220145875A/en
Publication of WO2021169428A1 publication Critical patent/WO2021169428A1/en

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
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    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
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    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
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    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
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    • B32B2250/24—All layers being polymeric
    • B32B2250/242—All polymers belonging to those covered by group B32B27/32
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    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/02—Synthetic macromolecular particles
    • B32B2264/0214—Particles made of materials belonging to B32B27/00
    • B32B2264/0221—Thermoplastic elastomer particles
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    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • 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
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    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
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    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/408—Matt, dull surface
    • 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
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/08—Dimensions, e.g. volume
    • B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
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    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • B32B2323/043—HDPE, i.e. high density polyethylene
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B32B2323/10—Polypropylene
    • C—CHEMISTRY; METALLURGY
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    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/08—Copolymers of ethene
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    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Definitions

  • the invention relates to the technical field of flexible packaging materials, in particular to a matte PE material and a preparation method and application thereof.
  • Matting film is a kind of packaging film with low gloss and diffuse reflection matting effect.
  • the matte PE film has a good visual presentation effect, can improve the product packaging grade, and compared with common PP, PET, NY and other matte film materials, it has the characteristics of low price and has a good application prospect.
  • Common PE processing and molding processes are: inflation, casting, and biaxial stretching.
  • the casting method is a method of producing a non-stretched, non-oriented flat-extrusion film through melt casting and quenching. Compared with the inflation method, it is characterized by fast production speed, high output and uniform thickness.
  • Heat-sealing strength reflects various comprehensive physical and mechanical properties of packaging materials and is one of the important indicators of packaging materials. The greater the heat-sealing strength, the stronger the seal, the less likely to be damaged during transportation and storage, and the better the preservation.
  • Chinese patent CN107351474A discloses a uniaxially stretched matte PE film capable of high-speed printing and its production process.
  • the matte PE film includes a corona layer, an intermediate layer and a heat seal layer, all of which are made of blown film-grade bimodal metallocene polyethylene
  • FB2230 and FB1520 single-layer matting is limited and multi-layer co-extrusion is required, raw materials are limited, material costs are high, and the product is single.
  • Chinese patent CN110305402A discloses a matting cast PE film and its production process, including a heat-sealing layer, an intermediate layer and a corona layer; mainly by using a special matting masterbatch (brand name MF5050E) for casting PE in the heat-sealing layer, At the same time, the blended crystalline system formed by incompatible PP and PE plays a matting effect.
  • the matting PE film has the characteristics of being able to adapt to high-speed printing of gravure and flexo, but its haze is less than 65%, which cannot achieve the ideal matting. Effect; And its preparation requires the use of specific raw materials, and the raw materials are limited.
  • Chinese patent CN108314818A discloses a matte cast PE film and its preparation method.
  • the cast PE film prepared by it has a three-layer structure of inner layer, middle layer and outer layer.
  • a certain proportion of inorganic fillers are added to each layer to make it It has matting properties and also has good tensile strength, puncture resistance and flame retardant properties; but the heat sealing problem has not been solved.
  • the purpose of the present invention is to provide a matte PE material, which has a uniform and fine film surface, and at the same time has excellent matting performance and heat sealing performance.
  • Another object of the present invention is to provide a method for preparing the above-mentioned matte PE material.
  • a matte PE material including a matte layer, a base material layer and a corona layer
  • the matting layer in parts by weight, includes components: 25 parts to 75 parts of PP resin; 30 parts to 70 parts of HDPE resin; 4 parts to 34 parts of compatibilizer; 0-5 parts of auxiliary agent;
  • the compatibilizer includes 80%-100% thermoplastic elastomer and 0-20% maleic anhydride graft compatibilizer by weight percentage;
  • the base material layer in parts by weight, includes components: 95-100 parts LLDPE resin; 0-5 parts auxiliary;
  • the corona layer in parts by weight, includes components: 30 to 70 parts of LLDPE resin; 30 to 70 parts of LDPE resin; and 0 to 5 parts of auxiliary agents.
  • the thickness of the matting PE material is 48-52 ⁇ m, and the thickness ratio of the matting layer: substrate layer: corona layer is 1-2:2-3:1-2.
  • the thermoplastic elastomer is selected from the group consisting of ethylene-propylene rubber EPR, ethylene-vinyl acetate copolymer EVA, EPDM, styrene-ethylene-butylene-styrene block copolymer SEBS, vinyl polyolefin elastomer Any one or more of POE, block vinyl polyolefin elastomer OBC, and propylene-based polyolefin elastomer Vistamaxx.
  • the maleic anhydride grafting compatibilizer is selected from one or more of polyethylene grafted maleic anhydride PE-g-MA, polypropylene grafted maleic anhydride PP-g-MA.
  • the weight percentage of the thermoplastic elastomer in the compatibilizer is 80% to 90%, and the weight percentage of the maleic anhydride graft compatibilizer in the compatibilizer is 10% to 20%.
  • PP resin includes homopolymer PP and copolymer PP; copolymer PP includes binary random copolymer PP and ternary random copolymer PP.
  • the melt index MFI of the copolymer PP is 6g/10min ⁇ 11g/10min at 230°C and 2.16kg.
  • the heat sealing temperature is 114°C to 165°C; preferably the melt index MFI is 8g/10min to 10g/10min at 230°C and 2.16kg, and the heat sealing temperature is 116°C to 125°C.
  • HDPE resin is high-viscosity extrusion grade high-density polyethylene
  • melt index MFI is 0.01g/10min ⁇ 2g/10min at 190°C, 2.16kg
  • number average molecular weight is 25000 ⁇ 60,000
  • molecular weight distribution is 3 ⁇ 6; preferably melt
  • the index MFI is 0.05g/10min-1g/10min at 190°C and 2.16kg
  • the number average molecular weight is 35000-50000
  • the molecular weight distribution is 4-5.
  • the auxiliary agent can be selected according to the processing conditions and requirements of each layer.
  • the auxiliary agent includes an antioxidant, an antistatic agent, and a slip agent; the addition amount is 0-5 parts.
  • the antioxidants include hindered phenol antioxidants and phosphite antioxidants; antistatic agents include quaternary ammonium salt antistatic agents; slip agents include erucamide slip agents and oleic acid amide slip agents .
  • the auxiliary agent can be compounded and used.
  • the melt index MFI of the LLDPE resin and the LDPE resin is 1.0-3.0 g/10 min at 190° C. and 2.16 kg.
  • the method for preparing a matte PE material of the present invention includes the following steps:
  • the extruder adopts a single-screw extruder, the length-to-diameter ratio of the extruder screw is 29-36; the temperature of casting co-extrusion is 150-240°C.
  • the matte PE material of the present invention can be applied to the field of plastic film flexible packaging.
  • the present invention has the following beneficial effects:
  • the present invention improves the film surface uniformity, extinction performance and heat sealing performance by adding the third-phase thermoplastic elastomer, and the prepared matte PE film material has a uniform and fine film surface, and has excellent extinction performance and heat sealing performance.
  • the single-layer haze value of the matting layer of the present invention can reach more than 80%, and the cost is better; the heat-sealing temperature is between 120°C and 135°C, and the heat-sealing strength is high, which meets the relevant standards and regulations of existing packaging materials; and the raw materials are easy Obtain and select a wider range of materials, breaking the monopoly of Borealis FB2230 and FB1520 resins in the industry.
  • the present invention provides a technical method for the casting of matting PE packaging materials, which can fill the gap in the field of matte PE materials and provide technical guidance; enriching the diversity of later products is extremely important for the development of the industry.
  • FIG. 1 is an SEM image of the film surface of the matte PE film material of Example 1.
  • Fig. 2 is an SEM image of the film surface of the matte PE film material of Comparative Example 1.
  • PP resin 1 Binary random copolymer polypropylene, MFI (230°C/2.16kg): 8.5g/10min, heat sealing temperature 116°C;
  • PP resin 2 Binary random copolymer polypropylene, MFI (230°C/2.16kg): 11g/10min, heat sealing temperature 135°C;
  • HDPE resin 1 High-viscosity extrusion-grade high-density polyethylene, MFI (190°C/2.16kg): 0.04g/10min, number average molecular weight is 53820, molecular weight distribution is 5.5;
  • HDPE resin 2 high-viscosity extrusion grade high-density polyethylene, MFI (190°C/2.16kg): 1g/10min, number average molecular weight is 42180, molecular weight distribution is 4.5;
  • LLDPE resin MFI (190°C/2.16kg): 2.0g/10min;
  • LDPE resin MFI (190°C/2.16kg): 2.0g/10min;
  • Thermoplastic elastomer vinyl polyolefin elastomer POE;
  • EVA Ethylene-vinyl acetate copolymer
  • Maleic anhydride graft compatibilizer polyethylene grafted maleic anhydride PE-g-MA;
  • Compound antioxidant a 2:1 compound mixture of hindered phenol antioxidant 1010 and phosphite antioxidant 168;
  • Compound additives compound antioxidant, quaternary ammonium salt antistatic agent and erucamide slip agent according to the compound mixture of 3:3:4;
  • the thickness of the prepared matting PE film material is 48 ⁇ m, and the ratio of matting layer: base material layer: corona layer is 1:2:1.
  • the set temperature of casting co-extrusion is 150°C, 230°C, 230°C, 230°C, 230°C, 230°C, 240°C, 240°C in sequence from the feed opening section to the die head.
  • Haze value test Refer to the standard ASTM D1003-13 to detect the haze value of plastic film materials
  • Heat sealing temperature test Refer to the standard ASTM F2029-2016 to detect the heat sealing temperature of plastic film materials (2kg, 0.8s), and the sample size is 100mm*15mm*0.4mm;
  • Heat sealing strength test Refer to the standard YBB00122003-2015 to test the heat sealing strength of plastic film materials (2kg, 0.8s), the sample size is 100mm*15mm*0.4mm;
  • Product appearance Use a scanning electron microscope (SEM) to observe the film surface of the product.
  • Table 1 The distribution ratio of each group of Examples 1 to 6 (in parts by weight) and the performance test results of the products
  • Table 2 The distribution ratio of each group of Examples 7-10 (in parts by weight) and the test results of various performances of the products
  • Table 3 The distribution ratio of each group of Comparative Examples 1 to 4 (in parts by weight) and the test results of various performances of the products
  • the matte PE film materials of Examples 1-10 were observed by naked eyes, and the film surface was uniform and fine; the film surface was observed by scanning electron microscope (SEM), the matte PE film of Example 1 (Figure 1) and the matte PE film of Comparative Example 1 were observed. ( Figure 2) In comparison, the surface of the matte PE film with thermoplastic elastomer added is significantly more uniform and finer.

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Abstract

Provided in the present invention are a matte PE material and a technical method employing tape casting with a third-phase thermoplastic elastomer being added, thus allowing a film surface thereof to be even and fine and to be provided with excellent matting performance and heat sealing performance. The single-layer matte value of the matte layer can achieve 80% or more; the heat sealing temperature is 120°C to 135°C and high heat sealing strength is provided, thus satisfying performance stipulated by standards related to existing packaging materials; this is applicable in the field of plastic film flexible packaging.

Description

一种消光PE材料及其制备方法和应用A matte PE material and its preparation method and application 技术领域Technical field
本发明涉及软包装材料技术领域，具体涉及一种消光PE材料及其制备方法和应用。The invention relates to the technical field of flexible packaging materials, in particular to a matte PE material and a preparation method and application thereof.
背景技术Background technique
随着人们对包装品质要求的提高，消光聚乙烯(PE)材料受到越来越多的关注。消光膜是一种低光泽度呈漫反射消光效果的包装用膜。消光PE膜拥有良好的视觉呈现效果，能提升产品包装档次，而且相对于常见的PP、PET、NY等消光薄膜材质，其具备价格低廉的特点，有着很好的应用前景。常见的PE加工成型工艺有：吹胀法、流延法、双向拉伸法，其中，流延法是通过熔体流延骤冷生产一种无拉伸、非定向的平挤薄膜的方法。与吹胀法相比，其特点是生产速度快，产量高，厚度均匀。As people's requirements for packaging quality increase, matte polyethylene (PE) materials have received more and more attention. Matting film is a kind of packaging film with low gloss and diffuse reflection matting effect. The matte PE film has a good visual presentation effect, can improve the product packaging grade, and compared with common PP, PET, NY and other matte film materials, it has the characteristics of low price and has a good application prospect. Common PE processing and molding processes are: inflation, casting, and biaxial stretching. Among them, the casting method is a method of producing a non-stretched, non-oriented flat-extrusion film through melt casting and quenching. Compared with the inflation method, it is characterized by fast production speed, high output and uniform thickness.
为了保证商品在包装、运输、储存和消费过程中能承受一定的外力，保证商品不开裂、不泄露，达到保护商品的目的，要求封合部位有足够的强度和密封性能。因此对于包装材料的热封性能有一定的要求。热封强度反应了包装材料的各种综合物理机械性能，是包装材料的重要指标之一，热封强度越大，封口越牢固，运输保存过程中越不易发生破损，保存越良好。In order to ensure that the product can withstand a certain external force during packaging, transportation, storage and consumption, ensure that the product does not crack or leak, and achieve the purpose of protecting the product, the sealing part is required to have sufficient strength and sealing performance. Therefore, there are certain requirements for the heat-sealing performance of packaging materials. Heat-sealing strength reflects various comprehensive physical and mechanical properties of packaging materials and is one of the important indicators of packaging materials. The greater the heat-sealing strength, the stronger the seal, the less likely to be damaged during transportation and storage, and the better the preservation.
现有市场上的消光PE产品主要来自于北欧化工(博禄)吹膜级双峰茂金属聚乙烯树脂，其形成了市场垄断，产品吹膜成型，原材料和产品单一，生产效率较低。相关流延消光PE包装材料的产品和技术，目前在市场上还十分少见，没有能兼顾良好热封性能、消光和膜面均匀细腻度的产品。Existing matting PE products on the market mainly come from Borealis (Borouge) blown film-grade bimodal metallocene polyethylene resin, which forms a market monopoly, blown film molding products, single raw materials and products, and low production efficiency. Products and technologies related to cast matting PE packaging materials are still very rare in the market, and there is no product that can take into account good heat-seal performance, matting and uniform fineness of the film surface.
中国专利CN107351474A公开了一种单向拉伸可高速印刷的消光PE膜及其生产工艺，其消光PE膜包括电晕层、中间层和热封层，均采用吹膜级双峰茂金属聚乙烯FB2230和FB1520，单层消光有限需要多层共挤，原材料受限，材料成本较高，产品单一。Chinese patent CN107351474A discloses a uniaxially stretched matte PE film capable of high-speed printing and its production process. The matte PE film includes a corona layer, an intermediate layer and a heat seal layer, all of which are made of blown film-grade bimodal metallocene polyethylene For FB2230 and FB1520, single-layer matting is limited and multi-layer co-extrusion is required, raw materials are limited, material costs are high, and the product is single.
中国专利CN110305402A公开了一种消光流延PE膜及其生产工艺，包括热封层、中间层以及电晕层；主要通过在热封层使用流延PE专用的消光母粒(牌号为MF5050E)，同时由不相容的PP和PE形成的共混结晶体系，起到消光作用，该消光PE膜具有能适应凹版与柔版高速印刷的特点，但其雾度小于65％，无法达到理想的消光效果；而且其制备需使用特定原料，原材料受限。Chinese patent CN110305402A discloses a matting cast PE film and its production process, including a heat-sealing layer, an intermediate layer and a corona layer; mainly by using a special matting masterbatch (brand name MF5050E) for casting PE in the heat-sealing layer, At the same time, the blended crystalline system formed by incompatible PP and PE plays a matting effect. The matting PE film has the characteristics of being able to adapt to high-speed printing of gravure and flexo, but its haze is less than 65%, which cannot achieve the ideal matting. Effect; And its preparation requires the use of specific raw materials, and the raw materials are limited.
中国专利CN108314818A公开了一种消光流延PE膜及其制备方法，其制备的流延PE膜具有内层、中层和外层的三层结构，通过在各层加入一定比例的无机填料，使其具有消光 性的同时具有良好的拉伸强度、抗穿刺强度及阻燃性能；但热封问题没有得到解决。Chinese patent CN108314818A discloses a matte cast PE film and its preparation method. The cast PE film prepared by it has a three-layer structure of inner layer, middle layer and outer layer. A certain proportion of inorganic fillers are added to each layer to make it It has matting properties and also has good tensile strength, puncture resistance and flame retardant properties; but the heat sealing problem has not been solved.
发明内容Summary of the invention
本发明目的在于，提供一种消光PE材料，该PE材料膜面均匀细腻，同时具有优异的消光性能和热封性能。The purpose of the present invention is to provide a matte PE material, which has a uniform and fine film surface, and at the same time has excellent matting performance and heat sealing performance.
本发明另一目的在于，提供上述消光PE材料的制备方法。Another object of the present invention is to provide a method for preparing the above-mentioned matte PE material.
本发明是通过以下技术方案实现的：The present invention is realized through the following technical solutions:
一种消光PE材料，包含消光层、基材层和电晕层；A matte PE material, including a matte layer, a base material layer and a corona layer;
其中，所述消光层，按重量份计，包括组分：25份～75份PP树脂；30份～70份HDPE树脂；4份～34份相容剂；0-5份助剂；Wherein, the matting layer, in parts by weight, includes components: 25 parts to 75 parts of PP resin; 30 parts to 70 parts of HDPE resin; 4 parts to 34 parts of compatibilizer; 0-5 parts of auxiliary agent;
所述相容剂，按重量百分比计，包括80％～100％热塑性弹性体；0～20％马来酸酐接枝相容剂；The compatibilizer includes 80%-100% thermoplastic elastomer and 0-20% maleic anhydride graft compatibilizer by weight percentage;
所述基材层，按重量份计，包括组分：95～100份LLDPE树脂；0～5份助剂；The base material layer, in parts by weight, includes components: 95-100 parts LLDPE resin; 0-5 parts auxiliary;
所述电晕层，按重量份计，包括组分：30～70份LLDPE树脂；30～70份LDPE树脂；0～5份助剂。The corona layer, in parts by weight, includes components: 30 to 70 parts of LLDPE resin; 30 to 70 parts of LDPE resin; and 0 to 5 parts of auxiliary agents.
优选的，所述消光PE材料的厚度为48～52μm，其中所述消光层：基材层：电晕层的厚度比为1～2:2～3:1～2。Preferably, the thickness of the matting PE material is 48-52 μm, and the thickness ratio of the matting layer: substrate layer: corona layer is 1-2:2-3:1-2.
所述的热塑性弹性体选自乙丙橡胶EPR、乙烯-醋酸乙烯共聚物EVA、三元乙丙橡胶EPDM、苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物SEBS、乙烯基聚烯烃弹性体POE、嵌段乙烯基聚烯烃弹性体OBC、丙烯基聚烯烃弹性体Vistamaxx中的任意一种或几种。所述的马来酸酐接枝相容剂选自聚乙烯接枝马来酸酐PE-g-MA、聚丙烯接枝马来酸酐PP-g-MA中的一种或几种。The thermoplastic elastomer is selected from the group consisting of ethylene-propylene rubber EPR, ethylene-vinyl acetate copolymer EVA, EPDM, styrene-ethylene-butylene-styrene block copolymer SEBS, vinyl polyolefin elastomer Any one or more of POE, block vinyl polyolefin elastomer OBC, and propylene-based polyolefin elastomer Vistamaxx. The maleic anhydride grafting compatibilizer is selected from one or more of polyethylene grafted maleic anhydride PE-g-MA, polypropylene grafted maleic anhydride PP-g-MA.
优选的，所述热塑性弹性体在相容剂中所占的重量百分比为80％～90％，马来酸酐接枝相容剂在相容剂中所占的重量百分比为10％～20％。Preferably, the weight percentage of the thermoplastic elastomer in the compatibilizer is 80% to 90%, and the weight percentage of the maleic anhydride graft compatibilizer in the compatibilizer is 10% to 20%.
PP树脂包括均聚PP和共聚PP；共聚PP包括二元无规共聚PP和三元无规共聚PP，所述共聚PP的熔融指数MFI在230℃、2.16kg下为6g/10min～11g/10min，热封温度为114℃～165℃；优选熔融指数MFI在230℃、2.16kg下为8g/10min～10g/10min，热封温度为116℃～125℃。PP resin includes homopolymer PP and copolymer PP; copolymer PP includes binary random copolymer PP and ternary random copolymer PP. The melt index MFI of the copolymer PP is 6g/10min～11g/10min at 230℃ and 2.16kg. , The heat sealing temperature is 114°C to 165°C; preferably the melt index MFI is 8g/10min to 10g/10min at 230°C and 2.16kg, and the heat sealing temperature is 116°C to 125°C.
HDPE树脂为高粘挤出级高密度聚乙烯，熔融指数MFI在190℃、2.16kg下为0.01g/10min～2g/10min，数均分子量为25000～60000，分子量分布为3～6；优选熔融指数MFI在190℃、2.16kg下为0.05g/10min～1g/10min，数均分子量为35000～50000，分子量分布为4～5。HDPE resin is high-viscosity extrusion grade high-density polyethylene, melt index MFI is 0.01g/10min～2g/10min at 190℃, 2.16kg, number average molecular weight is 25000～60,000, molecular weight distribution is 3～6; preferably melt The index MFI is 0.05g/10min-1g/10min at 190°C and 2.16kg, the number average molecular weight is 35000-50000, and the molecular weight distribution is 4-5.
本发明可以根据各层的加工情况以及需求选择助剂，所述助剂包括抗氧剂、抗静电剂、爽滑剂；添加量为0～5份。所述抗氧剂包括受阻酚类抗氧剂、亚磷酸酯类抗氧剂；抗静电剂包括季铵盐类抗静电剂；爽滑剂包括芥酸酰胺爽滑剂、油酸酰胺爽滑剂。所述助剂可以复配使用。In the present invention, the auxiliary agent can be selected according to the processing conditions and requirements of each layer. The auxiliary agent includes an antioxidant, an antistatic agent, and a slip agent; the addition amount is 0-5 parts. The antioxidants include hindered phenol antioxidants and phosphite antioxidants; antistatic agents include quaternary ammonium salt antistatic agents; slip agents include erucamide slip agents and oleic acid amide slip agents . The auxiliary agent can be compounded and used.
所述LLDPE树脂和LDPE树脂的熔融指数MFI在190℃、2.16kg下为1.0～3.0g/10min。The melt index MFI of the LLDPE resin and the LDPE resin is 1.0-3.0 g/10 min at 190° C. and 2.16 kg.
本发明的一种消光PE材料的制备方法，包括以下步骤：The method for preparing a matte PE material of the present invention includes the following steps:
(1)消光层母粒的制备：按照配比，将HDPE树脂与相容剂共混，得到共混物1；将PP树脂与助剂共混，得到共混物2；再将共混物1和共混物2共混并放入共混机，经过挤出造粒得到消光层母粒；(1) Preparation of matte layer masterbatch: according to the ratio, blend HDPE resin and compatibilizer to obtain blend 1; blend PP resin with additives to obtain blend 2; then blend the blend 1 and blend 2 are blended and put into the blender, and extruded and granulated to obtain the matte layer masterbatch;
(2)基材层母粒的制备：按照配比，将LLDPE树脂与助剂共混，经过挤出造粒得到基材层母粒；(2) Preparation of the base material layer masterbatch: According to the ratio, the LLDPE resin and the auxiliary agent are blended, and the base material layer masterbatch is obtained through extrusion granulation;
(3)电晕层母粒的制备：按照配比，将LLDPE树脂、LDPE树脂和助剂在高混机中均匀混合，经过挤出造粒得到电晕层母粒；(3) Preparation of the corona layer masterbatch: according to the ratio, the LLDPE resin, LDPE resin and additives are uniformly mixed in a high-mixer, and the corona layer masterbatch is obtained through extrusion granulation;
(4)将上述造粒得到的消光层母粒、基材层母粒、电晕层母粒分别放入流延机的消光层料筒、基材层料筒、电晕层料筒；随后根据设定的流量计量进行分配器分配，将消光层母粒同基材层母粒和电晕层母粒吸入三台挤出机下料口，依次经过挤出、冷却、测厚、电晕和牵引收卷系统，在设定工艺下流延共挤成消光PE薄膜材料。(4) Put the matte layer masterbatch, base material layer masterbatch, and corona layer masterbatch obtained by the above granulation into the matte layer barrel, base material layer barrel, and corona layer barrel of the casting machine, respectively; Distribute by the distributor according to the set flow rate, suck the matting layer masterbatch, the base layer masterbatch and the corona layer masterbatch into the discharge port of the three extruders, and then go through extrusion, cooling, thickness measurement, and corona in turn. With the traction and winding system, it is cast and co-extruded into a matte PE film material under the set process.
所述步骤(4)中所述挤出机采用单螺杆挤出机，挤出机螺杆长径比为29～36；流延共挤的温度为150～240℃。In the step (4), the extruder adopts a single-screw extruder, the length-to-diameter ratio of the extruder screw is 29-36; the temperature of casting co-extrusion is 150-240°C.
本发明的一种消光PE材料可应用于塑料薄膜软包装领域。The matte PE material of the present invention can be applied to the field of plastic film flexible packaging.
本发明与现有技术相比，具有如下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
(1)本发明通过添加第三相热塑性弹性体，改善了膜面均匀性、消光性能以及热封性能，制备得到的消光PE薄膜材料膜面均匀细腻、具有优异的消光性能和热封性能。(1) The present invention improves the film surface uniformity, extinction performance and heat sealing performance by adding the third-phase thermoplastic elastomer, and the prepared matte PE film material has a uniform and fine film surface, and has excellent extinction performance and heat sealing performance.
(2)本发明消光层的单层雾值可达到80％以上，成本更优；热封温度在120℃～135℃，且热封强度高，满足现有包材相关标准规定；而且原材料容易获取，选材范围更广，打破北欧化工FB2230和FB1520树脂在行业内的垄断。(2) The single-layer haze value of the matting layer of the present invention can reach more than 80%, and the cost is better; the heat-sealing temperature is between 120°C and 135°C, and the heat-sealing strength is high, which meets the relevant standards and regulations of existing packaging materials; and the raw materials are easy Obtain and select a wider range of materials, breaking the monopoly of Borealis FB2230 and FB1520 resins in the industry.
(3)本发明提供了消光PE包装材料流延成型的技术方法，能够在消光PE材料领域填补空白，提供技术引导作用；丰富后期产品的多样性，对行业发展极其重要。(3) The present invention provides a technical method for the casting of matting PE packaging materials, which can fill the gap in the field of matte PE materials and provide technical guidance; enriching the diversity of later products is extremely important for the development of the industry.
附图说明Description of the drawings
图1为实施例1的消光PE薄膜材料膜面的SEM图。FIG. 1 is an SEM image of the film surface of the matte PE film material of Example 1. FIG.
图2为对比例1的消光PE薄膜材料膜面的SEM图。Fig. 2 is an SEM image of the film surface of the matte PE film material of Comparative Example 1.
具体实施方式Detailed ways
下面结合具体实施例对本发明进行详细说明。以下实施例将有助于本领域的技术人员进一步理解本发明，但不以任何形式限制本发明。应当指出的是，对本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进。这些都属于本发明的保护范围。The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be pointed out that for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
本发明实施例中使用的原料及试剂均来源于市售。The raw materials and reagents used in the examples of the present invention are all commercially available.
PP树脂1：二元无规共聚聚丙烯，MFI(230℃/2.16kg)：8.5g/10min，热封温度116℃；PP resin 1: Binary random copolymer polypropylene, MFI (230℃/2.16kg): 8.5g/10min, heat sealing temperature 116℃;
PP树脂2：二元无规共聚聚丙烯，MFI(230℃/2.16kg)：11g/10min，热封温度135℃；PP resin 2: Binary random copolymer polypropylene, MFI (230℃/2.16kg): 11g/10min, heat sealing temperature 135℃;
HDPE树脂1：高粘挤出级高密度聚乙烯，MFI(190℃/2.16kg)：0.04g/10min，数均分子量为53820，分子量分布为5.5；HDPE resin 1: High-viscosity extrusion-grade high-density polyethylene, MFI (190℃/2.16kg): 0.04g/10min, number average molecular weight is 53820, molecular weight distribution is 5.5;
HDPE树脂2：高粘挤出级高密度聚乙烯，MFI(190℃/2.16kg)：1g/10min，数均分子量为42180，分子量分布为4.5；HDPE resin 2: high-viscosity extrusion grade high-density polyethylene, MFI (190℃/2.16kg): 1g/10min, number average molecular weight is 42180, molecular weight distribution is 4.5;
LLDPE树脂：MFI(190℃/2.16kg)：2.0g/10min；LLDPE resin: MFI (190°C/2.16kg): 2.0g/10min;
LDPE树脂：MFI(190℃/2.16kg)：2.0g/10min；LDPE resin: MFI (190°C/2.16kg): 2.0g/10min;
热塑性弹性体：乙烯基聚烯烃弹性体POE；Thermoplastic elastomer: vinyl polyolefin elastomer POE;
丙烯基聚烯烃弹性体Vistamaxx；Propylene-based polyolefin elastomer Vistamaxx;
苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物SEBS；Styrene-ethylene-butylene-styrene block copolymer SEBS;
三元乙丙橡胶EPDM；EPDM;
嵌段乙烯基聚烯烃弹性体OBC；Block vinyl polyolefin elastomer OBC;
乙烯-醋酸乙烯共聚物EVA；Ethylene-vinyl acetate copolymer EVA;
马来酸酐接枝相容剂：聚乙烯接枝马来酸酐PE-g-MA；Maleic anhydride graft compatibilizer: polyethylene grafted maleic anhydride PE-g-MA;
复配抗氧剂：受阻酚抗氧剂1010和亚磷酸酯抗氧剂168按2：1复配的混合物；Compound antioxidant: a 2:1 compound mixture of hindered phenol antioxidant 1010 and phosphite antioxidant 168;
复配助剂：复配抗氧剂、季铵盐抗静电剂和芥酸酰胺爽滑剂按照3：3：4复配的混合物；Compound additives: compound antioxidant, quaternary ammonium salt antistatic agent and erucamide slip agent according to the compound mixture of 3:3:4;
实施例1～10和对比例1～3的消光PE材料的制备方法：(按照表1～3各组分配比)Preparation methods of the matte PE materials of Examples 1-10 and Comparative Examples 1-3: (According to the distribution ratio of each group in Tables 1 to 3)
(1)消光层母粒的制备：按照配比，将HDPE树脂与相容剂共混，得到共混物1；将PP树脂与复配抗氧剂共混，得到共混物2；再将共混物1和共混物2共混并放入共混机，经过挤出造粒得到消光层母粒；(1) Preparation of matting layer masterbatch: according to the ratio, blend HDPE resin and compatibilizer to obtain blend 1; blend PP resin and compound antioxidant to obtain blend 2; Blend 1 and Blend 2 and put them into the blender, and obtain the matte layer masterbatch through extrusion granulation;
(2)基材层母粒的制备：按照配比，将LLDPE树脂与复配抗氧剂共混，经过挤出造粒得到基材层母粒；(2) Preparation of the base material layer masterbatch: According to the ratio, the LLDPE resin and the compound antioxidant are blended, and the base material layer masterbatch is obtained through extrusion granulation;
(3)电晕层母粒的制备：按照配比，将LLDPE树脂、LDPE树脂和复配助剂，在高混机中均匀混合，经过挤出造粒得到电晕层母粒；(3) Preparation of the corona layer masterbatch: according to the ratio, the LLDPE resin, LDPE resin and compounding additives are uniformly mixed in a high-mixer, and the corona layer masterbatch is obtained through extrusion granulation;
(4)将上述造粒得到的消光层母粒、基材层母粒、电晕层母粒分别放入流延机的消光层料筒、基材层料筒、电晕层料筒；随后根据设定的流量计量进行分配器分配，将消光层母粒同基材层母粒和电晕层母粒吸入三台挤出机下料口，依次经过挤出、冷却、测厚、电晕和牵引收卷系统，在设定工艺下流延共挤成消光PE薄膜材料。制备得到的消光PE薄膜材料的厚度为48μm，消光层：基材层：电晕层的比例为1:2:1。流延共挤的设定温度从下料口段至模头依次为150℃、230℃、230℃、230℃、230℃、230℃、240℃、240℃。(4) Put the matte layer masterbatch, base material layer masterbatch, and corona layer masterbatch obtained by the above granulation into the matte layer barrel, base material layer barrel, and corona layer barrel of the casting machine, respectively; Distribute by the distributor according to the set flow rate, suck the matting layer masterbatch, the base layer masterbatch and the corona layer masterbatch into the discharge port of the three extruders, and then go through extrusion, cooling, thickness measurement, and corona in turn. With the traction and winding system, it is cast and co-extruded into a matte PE film material under the set process. The thickness of the prepared matting PE film material is 48 μm, and the ratio of matting layer: base material layer: corona layer is 1:2:1. The set temperature of casting co-extrusion is 150°C, 230°C, 230°C, 230°C, 230°C, 230°C, 240°C, 240°C in sequence from the feed opening section to the die head.
各项性能测试方法：Various performance test methods:
雾度值测试：参照标准ASTM D1003-13，检测塑料薄膜材料雾度值；Haze value test: Refer to the standard ASTM D1003-13 to detect the haze value of plastic film materials;
热封温度测试：参照标准ASTM F2029-2016，检测塑料薄膜材料热封温度(2kg，0.8s)，试样尺寸为100mm*15mm*0.4mm；Heat sealing temperature test: Refer to the standard ASTM F2029-2016 to detect the heat sealing temperature of plastic film materials (2kg, 0.8s), and the sample size is 100mm*15mm*0.4mm;
热封强度测试：参照标准YBB00122003-2015，检测塑料薄膜材料热封强度(2kg，0.8s)，试样尺寸为100mm*15mm*0.4mm；Heat sealing strength test: Refer to the standard YBB00122003-2015 to test the heat sealing strength of plastic film materials (2kg, 0.8s), the sample size is 100mm*15mm*0.4mm;
产品外观：使用扫描电子显微镜(SEM)观察产品膜面。Product appearance: Use a scanning electron microscope (SEM) to observe the film surface of the product.
表1：实施例1～6各组分配比(按重量份计)及产品各项性能测试结果Table 1: The distribution ratio of each group of Examples 1 to 6 (in parts by weight) and the performance test results of the products
Figure PCTCN2020130126-appb-000001
Figure PCTCN2020130126-appb-000001
表2：实施例7～10各组分配比(按重量份计)及产品各项性能测试结果Table 2: The distribution ratio of each group of Examples 7-10 (in parts by weight) and the test results of various performances of the products
Figure PCTCN2020130126-appb-000002
Figure PCTCN2020130126-appb-000002
表3：对比例1～4各组分配比(按重量份计)及产品各项性能测试结果Table 3: The distribution ratio of each group of Comparative Examples 1 to 4 (in parts by weight) and the test results of various performances of the products
Figure PCTCN2020130126-appb-000003
Figure PCTCN2020130126-appb-000003
对实施例1～10的消光PE薄膜材料通过肉眼观察，膜面均匀细腻；使用扫描电子显微镜(SEM)观察膜面，实施例1的消光PE薄膜(图1)与对比例1的消光PE薄膜(图2)比较，添加了热塑性弹性体的消光PE薄膜的膜面明显更加均匀细腻。The matte PE film materials of Examples 1-10 were observed by naked eyes, and the film surface was uniform and fine; the film surface was observed by scanning electron microscope (SEM), the matte PE film of Example 1 (Figure 1) and the matte PE film of Comparative Example 1 were observed. (Figure 2) In comparison, the surface of the matte PE film with thermoplastic elastomer added is significantly more uniform and finer.
由实施例1～6与对比例1～3比较可知，添加了热塑性弹性体的实施例1～6的雾度和热封强度明显较高，热封温度较低；说明热塑性弹性体的加入对材料的热封性能起正向作用，能够降低热封温度，同时可以提高热封强度；而且能够提升材料的消光性能；相容剂PE-g-MA对热封、消光和均一性等有增效作用。From the comparison of Examples 1 to 6 and Comparative Examples 1 to 3, it can be seen that the haze and heat sealing strength of Examples 1 to 6 with the addition of thermoplastic elastomer are significantly higher, and the heat sealing temperature is lower; The heat sealing performance of the material plays a positive role, which can reduce the heat sealing temperature and increase the heat sealing strength; and can improve the matting performance of the material; the compatibilizer PE-g-MA can increase the heat sealing, matting and uniformity, etc. Efficacious.

Claims (12)

  1. 一种消光PE材料，其特征在于，包括消光层、基材层和电晕层；A matte PE material, which is characterized by comprising a matte layer, a base material layer and a corona layer;
    其中，所述消光层，按重量份计，包括组分：25份～75份PP树脂；30份～70份HDPE树脂；4份～34份相容剂；0～5份助剂；Wherein, the matting layer, in parts by weight, includes components: 25 parts to 75 parts of PP resin; 30 parts to 70 parts of HDPE resin; 4 parts to 34 parts of compatibilizer; 0 to 5 parts of auxiliary agent;
    所述相容剂，按重量百分比计，包括80％～100％热塑性弹性体；0～20％马来酸酐接枝相容剂；所述基材层，按重量份计，包括组分：95～100份LLDPE树脂，0～5份助剂；The compatibilizer, by weight percentage, includes 80%-100% thermoplastic elastomer; 0-20% maleic anhydride graft compatibilizer; the substrate layer, by weight, includes components: 95 ～100 parts of LLDPE resin, 0～5 parts of additives;
    所述电晕层，按重量份计，包括组分：30～70份LLDPE树脂；30～70份LDPE树脂；0～5份助剂。The corona layer, in parts by weight, includes components: 30 to 70 parts of LLDPE resin; 30 to 70 parts of LDPE resin; and 0 to 5 parts of auxiliary agents.
  2. 根据权利要求1所述的一种消光PE材料，其特征在于，所述消光PE材料的厚度为48～52μm，其中所述消光层：基材层：电晕层的厚度比为1～2:2～3:1～2。The matting PE material according to claim 1, wherein the thickness of the matting PE material is 48-52 μm, and the thickness ratio of the matting layer: base material layer: corona layer is 1 to 2: 2～3:1～2.
  3. 根据权利要求1所述的一种消光PE材料，其特征在于，所述热塑性弹性体在相容剂中所占的重量百分比为80％～90％，马来酸酐接枝相容剂在相容剂中所占的重量百分比为10％～20％。The matting PE material according to claim 1, wherein the weight percentage of the thermoplastic elastomer in the compatibilizer is 80% to 90%, and the maleic anhydride graft compatibilizer is in the compatibilizer. The weight percentage in the agent is 10%-20%.
  4. 根据权利要求1所述的一种消光PE材料，其特征在于，所述的热塑性弹性体选自乙丙橡胶EPR、乙烯-醋酸乙烯共聚物EVA、三元乙丙橡胶EPDM、苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物SEBS、乙烯基聚烯烃弹性体POE、嵌段乙烯基聚烯烃弹性体OBC、丙烯基聚烯烃弹性体Vistamaxx中的任意一种或几种。The matting PE material according to claim 1, wherein the thermoplastic elastomer is selected from the group consisting of ethylene-propylene rubber EPR, ethylene-vinyl acetate copolymer EVA, EPDM, styrene-ethylene- Any one or more of butene-styrene block copolymer SEBS, vinyl polyolefin elastomer POE, block vinyl polyolefin elastomer OBC, and propylene-based polyolefin elastomer Vistamaxx.
  5. 根据权利要求1所述的一种消光PE材料，其特征在于，所述的马来酸酐接枝相容剂选自聚乙烯接枝马来酸酐PE-g-MA、聚丙烯接枝马来酸酐PP-g-MA中的一种或几种。The matting PE material according to claim 1, wherein the maleic anhydride grafting compatibilizer is selected from polyethylene grafted maleic anhydride PE-g-MA, polypropylene grafted maleic anhydride One or more of PP-g-MA.
  6. 根据权利要求1所述的一种消光PE材料，其特征在于，所述的PP树脂包括均聚PP和共聚PP；所述共聚PP包括二元无规共聚PP和三元无规共聚PP；所述共聚PP的熔融指数MFI在230℃、2.16kg下为6g/10min～11g/10min，热封温度为114℃～165℃；优选熔融指数MFI在230℃、2.16kg下为8g/10min～10g/10min，热封温度为116℃～125℃。The matting PE material according to claim 1, wherein the PP resin includes homo PP and copolymer PP; the copolymer PP includes binary random copolymer PP and ternary random copolymer PP; The melt index MFI of the copolymer PP is 6g/10min～11g/10min at 230℃ and 2.16kg, and the heat sealing temperature is 114℃～165℃; preferably the melt index MFI is 8g/10min～10g at 230℃ and 2.16kg /10min, heat sealing temperature is 116℃～125℃.
  7. 根据权利要求1所述的一种消光PE材料，其特征在于，所述的HDPE树脂为高粘挤出级高密度聚乙烯，熔融指数MFI在190℃、2.16kg下为0.01g/10min～2g/10min，数均分子量为25000～60000，分子量分布为3～6；优选熔融指数MFI在190℃、2.16kg下为0.05g/10min～1g/10min，数均分子量为35000～50000，分子量分布为4～5。The matte PE material according to claim 1, wherein the HDPE resin is high-viscosity extrusion-grade high-density polyethylene, and its melt index MFI is 0.01g/10min～2g at 190℃ and 2.16kg /10min, the number average molecular weight is 25000～60,000, the molecular weight distribution is 3-6; preferably the melt index MFI is 0.05g/10min～1g/10min at 190℃ and 2.16kg, the number average molecular weight is 35000～50,000, and the molecular weight distribution is 4～5.
  8. 根据权利要求1所述的一种消光PE材料，其特征在于，所述LLDPE树脂和LDPE树脂的熔融指数MFI在190℃、2.16kg下为1.0～3.0g/10min。The matte PE material according to claim 1, wherein the melt index MFI of the LLDPE resin and the LDPE resin is 1.0-3.0 g/10 min at 190°C and 2.16 kg.
  9. 根据权利要求1所述的一种消光PE材料，其特征在于，所述助剂为抗氧剂、抗静电剂或爽滑剂中的一种或几种的复配。The matting PE material according to claim 1, wherein the auxiliary agent is one or a combination of antioxidants, antistatic agents, or slip agents.
  10. 根据权利要求1～9任一项所述的一种消光PE材料的制备方法，其特征在于，包括以下步骤：A method for preparing a matte PE material according to any one of claims 1-9, characterized in that it comprises the following steps:
    (1)消光层母粒的制备：按照配比，将HDPE树脂与相容剂共混，得到共混物1；将PP树脂与助剂共混，得到共混物2；再将共混物1和共混物2共混并放入共混机，经过挤出造粒得到消光层母粒；(1) Preparation of matte layer masterbatch: according to the ratio, blend HDPE resin and compatibilizer to obtain blend 1; blend PP resin with additives to obtain blend 2; then blend the blend 1 and blend 2 are blended and put into the blender, and extruded and granulated to obtain the matte layer masterbatch;
    (2)基材层母粒的制备：按照配比，将LLDPE树脂与助剂共混，经过挤出造粒得到基材层母粒；(2) Preparation of the base material layer masterbatch: According to the ratio, the LLDPE resin and the auxiliary agent are blended, and the base material layer masterbatch is obtained through extrusion granulation;
    (3)电晕层母粒的制备：按照配比，将LLDPE树脂、LDPE树脂和助剂在高混机中均匀混合，经过挤出造粒得到电晕层母粒；(3) Preparation of the corona layer masterbatch: according to the ratio, the LLDPE resin, LDPE resin and additives are uniformly mixed in a high-mixer, and the corona layer masterbatch is obtained through extrusion granulation;
    (4)将上述造粒得到的消光层母粒、基材层母粒、电晕层母粒分别放入流延机的消光层料筒、基材层料筒、电晕层料筒；随后根据设定的流量计量进行分配器分配，将消光层母粒同基材层母粒和电晕层母粒吸入三台挤出机下料口，依次经过挤出、冷却、测厚、电晕和牵引收卷系统，在设定工艺下流延共挤成消光PE薄膜材料。(4) Put the matte layer masterbatch, base material layer masterbatch, and corona layer masterbatch obtained by the above granulation into the matte layer barrel, base material layer barrel, and corona layer barrel of the casting machine, respectively; Distribute by the distributor according to the set flow rate, suck the matting layer masterbatch with the base material layer masterbatch and the corona layer masterbatch into the discharge port of the three extruders, and then go through extrusion, cooling, thickness measurement, and corona in turn. With the traction and winding system, it is cast and co-extruded into a matte PE film material under the set process.
  11. 根据权利要求10所述的一种消光PE材料的制备方法，其特征在于，步骤(4)中所述挤出机采用单螺杆挤出机，所述挤出机螺杆长径比为29～36；所述流延共挤的温度为150～240℃。The method for preparing a matte PE material according to claim 10, wherein the extruder in step (4) adopts a single-screw extruder, and the extruder has a screw length-to-diameter ratio of 29 to 36 The temperature of the casting and co-extrusion is 150-240°C.
  12. 根据权利要求1～9任一项所述的一种消光PE材料的应用，其特征在于，应用于塑料薄膜软包装领域。The application of a matte PE material according to any one of claims 1-9, characterized in that it is applied to the field of plastic film flexible packaging.
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