CN108928068A - A kind of imitative cotton texture composite plastic packing film and preparation method - Google Patents

A kind of imitative cotton texture composite plastic packing film and preparation method Download PDF

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Publication number
CN108928068A
CN108928068A CN201810493196.0A CN201810493196A CN108928068A CN 108928068 A CN108928068 A CN 108928068A CN 201810493196 A CN201810493196 A CN 201810493196A CN 108928068 A CN108928068 A CN 108928068A
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China
Prior art keywords
film
layer
polyester
composite plastic
plastic packing
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CN201810493196.0A
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Chinese (zh)
Inventor
陈庆
昝航
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Chengdu New Keli Chemical Science Co Ltd
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Chengdu New Keli Chemical Science Co Ltd
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Priority to CN201810493196.0A priority Critical patent/CN108928068A/en
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    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)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
    • 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
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier

Abstract

The invention discloses a kind of imitative cotton texture composite plastic packing film and preparation methods.The composite plastic packing film is followed successively by big grid height from top to bottom and imitates cotton layer of polyester fiber, bidirectional stretching polypropylene film layer, polystyrene foam granulosa, polyester matt film layer.The preparation step is：A, appropriate slurry is sprayed in polyester matt film surface, adheres to spherical polystyrene foam grain, polyester-foam grain film is made；B, after second of stretching of bidirectional stretching polypropylene film, it is bonded polyester-foam grain film in side, another layer of big grid height of fitting imitates cotton layer of polyester fiber；C, imitative cotton texture composite plastic packing film is obtained after smooth winding.Obtained laminated film has good cushion performance, and there is good cotton texture, skid resistance and matt to feel, it is simultaneously thermoplastic, is easily recycled, particularly suitable for fields such as cosmetics of super quality packaging, Wines packing, precision instrument packaging, electronic product packagings.

Description

A kind of imitative cotton texture composite plastic packing film and preparation method
Technical field
The present invention relates to packaging film fields, and in particular to the preparation of composite plastic packing film, more particularly, to a kind of imitative cotton Texture composite plastic packing film and preparation method.
Background technique
With the development and the improvement of people's living standards of society, the classification of product is more and more thinner, for the packaging of product It is not limited in visual effect, but will be according to the demand in the characteristics of product and market, towards functionalization, diversified direction Depth exploitation.In recent years, the progress of technology is so that the functionalization development trend of plastic film is increasingly obvious, high request, height The plastic film of technology content is just becoming the pillar industry and R&D target of many enterprises, to proposing more for packaging function Carry out higher requirement.
Currently, plastics package is in the transition and upgrade stage, a large amount of composite packaging has been emerged.Traditional plastics package Film is difficult to meet the requirement of market development.One side plastics package item functionalization such as high-barrier, hypertonicity, multifunctional fresh-keeping, Select gas permeability, heat resistance, sterile（Antibacterial）Property and antirust, deodorization, shape memory, can seal again, the development such as easily openable；Separately On the one hand the direction that is consistent is developed, such as paper-plastic stick, plating metal assign special function and using effect.Plastic packaging film returns It receives and packaging texture is the Main way studied at present.
Number of patent application 201720514869.7 discloses a kind of multilayer composite plastic packaging bag, successively includes outside in Matt film, aluminium foil, fiberglass gridding cloth and polydiphenyl ether plastics, and pass through compounding machine after being bonded between layers by adhesive It is hot pressed into integral structure；The adhesive uses soluble polyurethane adhesive；The single thread of the fiberglass gridding cloth is straight Diameter is 20um, mesh aperture 2mm, with a thickness of 0.14 ~ 0.15mm；The polydiphenyl ether plastics with a thickness of 0.04 ~ 0.05mm；Institute State matt film and aluminium foil with a thickness of 0.05 ~ 0.06mm.Not only there is the characteristic of plastic film but also there is preferable metallic luster, beauty Sight, erosion resistant, protects perfume, is non-toxic and tasteless moisture-proof, airtight, shading；In addition, with good intensity and toughness and have excellent again Physical mechanical property, heat resistance and electric insulating quality, creep resistant under high temperature, using effect is good.
Number of patent application 201120117900.6 discloses a kind of plastic composite packaging membrane structure, including polyethylene film Layer, is compounded with one or more layers composite layer in the one side of film layer or two-sided hot melt, and two adjacent layer choosings are different Pearl cotton, steam bead membrane, one lamination of lamination, high density polyethylene (HDPE) inflation film or steam bead membrane can be selected in material, film layer Pearl cotton, steam bead membrane, lamination, high density polyethylene (HDPE) inflation film, the combination of one lamination of steam bead membrane can be selected in combined films, composite layer Film, leatheroid, cushion compound or sponge etc..The composite package film has the advantages of two or more layers material, and can make up respective Disadvantage has wider purposes compared with the polyethylene packaging membrane product of single layer, can be sufficiently used for production packaging bag, packet Packaging sheet, tourism supplies, household items, handbag product etc..
Number of patent application 201721242138.8 discloses a kind of composite membrane for packaging medicine, including what is be sequentially compounding PP layers, soft aluminium foil layer, hot sealing layer, are provided with graphene enhancement layer between PP layers and soft aluminium foil layer, PP layers of upper surface bonding is set It is equipped with SRB antibiotic paint layer, hot sealing layer is sarin and metallocene PE coextruded layer, and metallocene polyethylene layer is located at soft aluminium foil layer Between sarin layer.Simple structure and reasonable design has good barrier property, heat sealability and soft row, graphene enhancement layer Setting, can effectively increase the mechanical strength of composite membrane, and the setting of SRB antibiotic paint layer has preferable antibacterial effect, to mention The safety that high product uses.
Number of patent application 201520051303.6, which discloses kind, has resistance wet, barrier property, heat insulating function, and mechanical strength High plastic flexible package film comprising polyvinylchloride thermal insulation layer, the ethylene-vinyl alcohol copolymer being successively combined with each other EVOH barrier layer and polyamide PA protective layer.The plastic flexible package film has wet good resistance, barrier property, heat insulating function and power Intensity is learned, and nontoxic, odorless, printing is not easy to wander off, smooth advantage after printing.
It can be seen that plastic packaging film is big in the presence of classification recovery difficult in the prior art, the feature of environmental protection is poor, and wastes tight Weight, at the same it is poor using the texture of packaging, it is difficult to the problems such as reaching good packaging texture.
Summary of the invention
Effectively to solve above-mentioned technical problem, the invention proposes a kind of imitative cotton texture composite plastic packing film and preparation sides Method, can effectively reduce the recovery difficult of plastic packaging film, while have splendid imitative cotton texture.
The specific technical solution of the present invention is as follows：
A kind of imitative cotton texture composite plastic packing film, the composite plastic packing film are formed by four layers, are followed successively by from top to bottom big Grid height imitates cotton layer of polyester fiber, bidirectional stretching polypropylene film layer, polystyrene foam granulosa, polyester matt film layer.
Preferably, it is 80 ~ 120g/m that the big grid height, which imitates the surface density of cotton layer of polyester fiber,2, mesh size be 3mm × 3mm~5mm×5mm。
Preferably, the bidirectional stretching polypropylene film layer with a thickness of 20 ~ 40 μm, draw ratio is 2 ~ 3 times.
Preferably, the mist degree of the polyester matt film layer is 60 ~ 80%, and glossiness is 20 ~ 25%.
A kind of imitative cotton texture composite plastic packing film that above content of the present invention proposes, interlayer entrained bubbles grain assign good Good buffer function, and penetrate the matt sense that big grid height imitates cotton layer of polyester fiber and Biaxially oriented polypropylene layer shows pearly-lustre Feel；The big grid height of fitting imitates cotton layer of polyester fiber, and outermost layer is used as when for packing, with good cotton texture and anti-skidding Property, particularly suitable for cosmetics of super quality packaging, Wines packing, precision instrument packaging, electronic product packaging.In particular, the packet Filling composite membrane is thermoplastic, can classify according to plastics and recycle, avoid existing composite packaging and be difficult to the problem of recycling.
A kind of preparation method of imitative cotton texture composite plastic packing film, the specific preparation step of the composite plastic packing film Suddenly it is：
A, by polyester matt film, continuous spreading gathers spherical shape in the appropriate slurry of surface high pressure atomized spray under roller conveying Styrenic foams grain is adhered to polyester matt film surface, and polyester-foam grain film is made, and winds spare；
B, bidirectional stretching polypropylene film is prepared, after second stretches, while hot by polyester made from step a-foam grain film It is fitted in the side of bidirectional stretching polypropylene film, while big grid height is imitated into cotton layer of polyester fiber and is fitted in biaxial stretching polypropylene The other side of alkene film；
C, smooth winding is carried out using collator, imitative cotton texture composite plastic packing film is made.
Preferably, in the step a, slurry is acetone, is sprayed using high-pressure atomization, is subject to bonded foam, excessive Sprinkling will lead to film, deformation.It is preferably sprayed using the pressure atomization of 0.5-1MPa, to prevent excessive propanone to the damage of film Wound.
Preferably, in the step a, the diameter of polystyrene foam grain is 2 ~ 3mm, and sphericity is 80 ~ 90%.
Preferably, in the step a, the adherency number of plies of polystyrene foam grain is one layer, the spacing of foam grain is 1 ~ 2mm。
Polyester fiber has splendid wrinkle resistance and conformality, intensity with higher and elastic recovery capability, strong Durable, wash and wear, not adhesive hair, and high imitative cotton polyester fiber overcome conventional polyester fiber hygroscopicity it is poor, it is easy to produce static electricity, The disadvantages of color difficulty is big, comfort is poor, the present invention imitates cotton layer of polyester fiber using big grid height and prepares plastic foil, existing poly- The advantages that ester is wear-resisting, high-strength, guarantor's type, and the excellent properties such as appearance, gloss, feel for having cotton.Bidirectional stretching polypropylene film tool There are the advantages that light, nontoxic, odorless, moisture-proof, high mechanical strength, good stability of the dimension, printing performance are good, the transparency is good, tool Have the advantages that the high grade of transparency, good luster, good barrier property, shock strength are high, low temperature resistant；The foam grain of polystyrene foam granulosa has There is good cushion performance；The matt of polyester matt film layer feels that external texture can be improved.The present invention it is compound by above-mentioned four layers and At packaging film, not only there is excellent outside to imitate cotton texture, while the easy recycling advantage of thermoplastic can be played.
Beneficial effects of the present invention are：
1. proposing using the compound method for preparing imitative cotton texture composite plastic packing film of four tunic layers.
2. the present invention is compound by four tunic layers, polyester matt film layer and Biaxially oriented polypropylene layer show the matt of pearly-lustre Feel, interlayer entrained bubbles grain can assign film good buffer function, and high imitative cotton layer of polyester fiber makes composite plastic film With good cotton texture and skid resistance, particularly suitable for cosmetics of super quality packaging, Wines packing, precision instrument packaging, electricity The fields such as sub- product packaging.
3. packaging composite film prepared by the present invention is thermoplastic, it can classify according to plastics and recycle, effectively solve Common composite packaging is difficult to the problem of recycling.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
Composite plastic packing film is formed by four layers, is followed successively by the imitative cotton layer of polyester fiber of big grid height from top to bottom, biaxial tension gathers Polypropylene film layer, polystyrene foam granulosa, polyester matt film layer.
The surface density that big grid height imitates cotton layer of polyester fiber is 110g/m2, mesh size is 4mm × 4mm；Biaxial tension is poly- The average thickness of Polypropylene film layer is 32 μm, and draw ratio is 2 times；The mist degree of polyester matt film layer is 72%, glossiness 23%.
The specific preparation step of composite plastic packing film is：
A, by polyester matt film under roller conveying continuous spreading, spray appropriate third on surface with the pressure high-pressure atomization of 0.5MPa Spherical polystyrene foam grain is adhered to polyester matt film surface by ketone, and polyester-foam grain film is made, and is wound spare；
B, bidirectional stretching polypropylene film is prepared, after second stretches, while hot by polyester made from step a-foam grain film It is fitted in the side of bidirectional stretching polypropylene film, while big grid height is imitated into cotton layer of polyester fiber and is fitted in biaxial stretching polypropylene The other side of alkene film；
C, smooth winding is carried out using collator, imitative cotton texture composite plastic packing film is made.
In step a, the diameter of polystyrene foam grain is 2mm, sphericity 86%；In step a, polystyrene foam grain The adherency number of plies be one layer, the spacing of foam grain is 1mm.
Embodiment 2
Composite plastic packing film is formed by four layers, is followed successively by the imitative cotton layer of polyester fiber of big grid height from top to bottom, biaxial tension gathers Polypropylene film layer, polystyrene foam granulosa, polyester matt film layer.
The surface density that big grid height imitates cotton layer of polyester fiber is 90g/m2, mesh size is 3mm × 3mm；Biaxial tension is poly- The average thickness of Polypropylene film layer is 25 μm, and draw ratio is 3 times；The mist degree of polyester matt film layer is 65%, glossiness 22%.
The specific preparation step of composite plastic packing film is：
A, by polyester matt film under roller conveying continuous spreading, spray appropriate third on surface with the pressure high-pressure atomization of 0.5MPa Spherical polystyrene foam grain is adhered to polyester matt film surface by ketone, and polyester-foam grain film is made, and is wound spare；
B, bidirectional stretching polypropylene film is prepared, after second stretches, while hot by polyester made from step a-foam grain film It is fitted in the side of bidirectional stretching polypropylene film, while big grid height is imitated into cotton layer of polyester fiber and is fitted in biaxial stretching polypropylene The other side of alkene film；
C, smooth winding is carried out using collator, imitative cotton texture composite plastic packing film is made.
In step a, the diameter of polystyrene foam grain is 2mm, sphericity 82%；In step a, polystyrene foam grain The adherency number of plies be one layer, the spacing of foam grain is 2mm.
Embodiment 3
Composite plastic packing film is formed by four layers, is followed successively by the imitative cotton layer of polyester fiber of big grid height from top to bottom, biaxial tension gathers Polypropylene film layer, polystyrene foam granulosa, polyester matt film layer.
The surface density that big grid height imitates cotton layer of polyester fiber is 110g/m2, mesh size is 5mm × 5mm；Biaxial tension is poly- The average thickness of Polypropylene film layer is 35 μm, and draw ratio is 2 times；The mist degree of polyester matt film layer is 75%, glossiness 23%.
The specific preparation step of composite plastic packing film is：
A, by polyester matt film under roller conveying continuous spreading, spray appropriate third on surface with the pressure high-pressure atomization of 0.5MPa Spherical polystyrene foam grain is adhered to polyester matt film surface by ketone, and polyester-foam grain film is made, and is wound spare；
B, bidirectional stretching polypropylene film is prepared, after second stretches, while hot by polyester made from step a-foam grain film It is fitted in the side of bidirectional stretching polypropylene film, while big grid height is imitated into cotton layer of polyester fiber and is fitted in biaxial stretching polypropylene The other side of alkene film；
C, smooth winding is carried out using collator, imitative cotton texture composite plastic packing film is made.
In step a, the diameter of polystyrene foam grain is 3mm, sphericity 88%；In step a, polystyrene foam grain The adherency number of plies be one layer, the spacing of foam grain is 2mm.
Embodiment 4
Composite plastic packing film is formed by four layers, is followed successively by the imitative cotton layer of polyester fiber of big grid height from top to bottom, biaxial tension gathers Polypropylene film layer, polystyrene foam granulosa, polyester matt film layer.
The surface density that big grid height imitates cotton layer of polyester fiber is 80g/m2, mesh size is 3mm × 3mm；Biaxial tension is poly- The average thickness of Polypropylene film layer is 20 μm, and draw ratio is 2 times；The mist degree of polyester matt film layer is 60%, glossiness 20%.
The specific preparation step of composite plastic packing film is：
A, by polyester matt film under roller conveying continuous spreading, spray appropriate third on surface with the pressure high-pressure atomization of 0.5MPa Spherical polystyrene foam grain is adhered to polyester matt film surface by ketone, and polyester-foam grain film is made, and is wound spare；
B, bidirectional stretching polypropylene film is prepared, after second stretches, while hot by polyester made from step a-foam grain film It is fitted in the side of bidirectional stretching polypropylene film, while big grid height is imitated into cotton layer of polyester fiber and is fitted in biaxial stretching polypropylene The other side of alkene film；
C, smooth winding is carried out using collator, imitative cotton texture composite plastic packing film is made.
In step a, the diameter of polystyrene foam grain is 2mm, sphericity 80%；In step a, polystyrene foam grain The adherency number of plies be one layer, the spacing of foam grain is 1mm.
Embodiment 5
Composite plastic packing film is formed by four layers, is followed successively by the imitative cotton layer of polyester fiber of big grid height from top to bottom, biaxial tension gathers Polypropylene film layer, polystyrene foam granulosa, polyester matt film layer.
The surface density that big grid height imitates cotton layer of polyester fiber is 120g/m2, mesh size is 5mm × 5mm；Biaxial tension is poly- The average thickness of Polypropylene film layer is 40 μm, and draw ratio is 3 times；The mist degree of polyester matt film layer is 80%, glossiness 25%.
The specific preparation step of composite plastic packing film is：
A, by polyester matt film under roller conveying continuous spreading, spray appropriate third on surface with the pressure high-pressure atomization of 0.5MPa Spherical polystyrene foam grain is adhered to polyester matt film surface by ketone, and polyester-foam grain film is made, and is wound spare；
B, bidirectional stretching polypropylene film is prepared, after second stretches, while hot by polyester made from step a-foam grain film It is fitted in the side of bidirectional stretching polypropylene film, while big grid height is imitated into cotton layer of polyester fiber and is fitted in biaxial stretching polypropylene The other side of alkene film；
C, smooth winding is carried out using collator, imitative cotton texture composite plastic packing film is made.
In step a, the diameter of polystyrene foam grain is 3mm, sphericity 90%；In step a, polystyrene foam grain The adherency number of plies be one layer, the spacing of foam grain is 2mm.
Comparative example 1
Composite plastic packing film is followed successively by bidirectional stretching polypropylene film layer, polystyrene foam by up of three-layer from top to bottom Granulosa, polyester matt film layer.
The average thickness of bidirectional stretching polypropylene film layer is 40 μm, and draw ratio is 3 times；The mist degree of polyester matt film layer It is 80%, glossiness 25%.
The specific preparation step of composite plastic packing film is：
A, by polyester matt film under roller conveying continuous spreading, spray appropriate third on surface with the pressure high-pressure atomization of 0.5MPa Spherical polystyrene foam grain is adhered to polyester matt film surface by ketone, and polyester-foam grain film is made, and is wound spare；
B, bidirectional stretching polypropylene film is prepared, after second stretches, while hot by polyester made from step a-foam grain film It is fitted in the side of bidirectional stretching polypropylene film；
C, smooth winding is carried out using collator, composite plastic packing film is made.
In step a, the diameter of polystyrene foam grain is 3mm, sphericity 90%；In step a, polystyrene foam grain The adherency number of plies be one layer, the spacing of foam grain is 2mm.
Comparative example 2
Composite plastic packing film is followed successively by the imitative cotton layer of polyester fiber of big grid height, biaxial tension gathers by up of three-layer from top to bottom Polypropylene film layer, polyester matt film layer.
The surface density that big grid height imitates cotton layer of polyester fiber is 120g/m2, mesh size is 5mm × 5mm；Biaxial tension is poly- The average thickness of Polypropylene film layer is 40 μm, and draw ratio is 3 times；The mist degree of polyester matt film layer is 80%, glossiness 25%.
The specific preparation step of composite plastic packing film is：
A, by polyester matt film roller conveying under continuous spreading；
B, bidirectional stretching polypropylene film is prepared, after second stretches, is while hot fitted in the matt film that step a is unfolded two-way The side of stretched polypropene film, while big grid height is imitated into cotton layer of polyester fiber and is fitted in the another of bidirectional stretching polypropylene film Side；
C, smooth winding is carried out using collator, imitative cotton texture composite plastic packing film is made.
Composite plastic packing film made from above-described embodiment 1 ~ 5 and comparative example 1-2 is tested its imitative cotton texture, resiliency, is surveyed The method or condition for sign of taking temperature are as follows：
Imitative cotton texture：It observes by the naked eye and experiences with sense of touch, determine the imitative cotton texture of composite plastic packing film.
Resiliency：Composite plastic packing film after will be smooth coats same glass bottle, is overmolding to one layer, then exists The height of 500mm is thrown, and buffering test analysis is carried out.
The results are shown in Table 1.
Table 1：
Test item Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Comparative example 1 Comparative example 2
Imitative cotton texture Cotton feel Good, matt Feel obvious Cotton feel Good, matt sense Feel obvious Cotton good hand touch, Matt feels bright It is aobvious Cotton good hand touch, Matt feels bright It is aobvious Cotton good hand touch, Matt feels bright It is aobvious Without cotton feel, Matt feel compared with Difference Cotton feel, Matt is felt It is poor
Resiliency Bottle is without broken Damage Bottle is without broken Damage Bottle is without breakage Bottle is without breakage Bottle is without breakage Bottle is without breakage Bottle is damaged

Claims (8)

1. a kind of imitative cotton texture composite plastic packing film, it is characterised in that：The composite plastic packing film is formed by four layers, by upper It is followed successively by big grid height downwards and imitates cotton layer of polyester fiber, bidirectional stretching polypropylene film layer, polystyrene foam granulosa, polyester Asia Light film layer.
2. a kind of imitative cotton texture composite plastic packing film according to claim 1, it is characterised in that：The big grid height imitates cotton The surface density of layer of polyester fiber is 80 ~ 120g/m2, mesh size is 3mm × 3mm ~ 5mm × 5mm.
3. a kind of imitative cotton texture composite plastic packing film according to claim 1, it is characterised in that：The biaxial stretching polypropylene Alkene film layer with a thickness of 20 ~ 40 μm, draw ratio is 2 ~ 3 times.
4. a kind of imitative cotton texture composite plastic packing film according to claim 1, it is characterised in that：The polyester matt film layer Mist degree be 60 ~ 80%, glossiness be 20 ~ 25%.
5. a kind of preparation method of imitative cotton texture composite plastic packing film, it is characterised in that：Specifically preparation step is：
A, by polyester matt film, continuous spreading gathers spherical shape in the appropriate slurry of surface high pressure atomized spray under roller conveying Styrenic foams grain is adhered to polyester matt film surface, and polyester-foam grain film is made, and winds spare；
B, bidirectional stretching polypropylene film is prepared, after second stretches, while hot by polyester made from step a-foam grain film It is fitted in the side of bidirectional stretching polypropylene film, while big grid height is imitated into cotton layer of polyester fiber and is fitted in biaxial stretching polypropylene The other side of alkene film；
C, smooth winding is carried out using collator, imitative cotton texture composite plastic packing film is made.
6. a kind of preparation method of imitative cotton texture composite plastic packing film according to claim 5, it is characterised in that：The step In rapid a, slurry is acetone kind.
7. a kind of preparation method of imitative cotton texture composite plastic packing film according to claim 5, it is characterised in that：The step In rapid a, the diameter of polystyrene foam grain is 2 ~ 3mm, and sphericity is 80 ~ 90%.
8. a kind of preparation method of imitative cotton texture composite plastic packing film according to claim 5, it is characterised in that：The step In rapid a, the adherency number of plies of polystyrene foam grain is one layer, and the spacing of foam grain is 1 ~ 2mm.
CN201810493196.0A 2018-05-22 2018-05-22 A kind of imitative cotton texture composite plastic packing film and preparation method Withdrawn CN108928068A (en)

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