CN110395036A - A kind of vacuum compression packaging Special flexible plastic foil and preparation method thereof - Google Patents
A kind of vacuum compression packaging Special flexible plastic foil and preparation method thereof Download PDFInfo
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- CN110395036A CN110395036A CN201910800901.1A CN201910800901A CN110395036A CN 110395036 A CN110395036 A CN 110395036A CN 201910800901 A CN201910800901 A CN 201910800901A CN 110395036 A CN110395036 A CN 110395036A
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Classifications
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- 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
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (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
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- 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
- B32B2307/412—Transparent
-
- 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
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
-
- 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
- B32B2307/7244—Oxygen barrier
-
- 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
-
- 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
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D2565/38—Packaging materials of special type or form
- B65D2565/381—Details of packaging materials of special type or form
Abstract
The present invention relates to plastic film for wrapping and its preparation technical fields, Special flexible plastic foil is packed more particularly to a kind of vacuum compression, the flexible plastic film is followed successively by hot sealing layer, the first enhancement layer, barrier layer, the second enhancement layer and flexible layer from bottom to top and thickness ratio is followed successively by (3 ~ 5): (5 ~ 10): (5 ~ 10): (5 ~ 10): (10 ~ 15).It is compound as flexible layer material using thermoplastic polyurethane, polyolefin elastomer, linear low density polyethylene (LLDPE), inorganic microsphere, assign the good toughness of film, puncture resistance, wear-resisting property.Preparation method is in the co-extrusion film blowing machine after each raw material to be separately added into preheating, and Multi-layer co-extrusion film-blowing obtains vacuum compression packaging Special flexible plastic foil after being heated to extrusion temperature.
Description
Technical field
The present invention relates to plastic film for wrapping and its preparation technical fields, and in particular to a kind of vacuum compression packaging is dedicated
Flexible plastic film and preparation method thereof.
Background technique
Film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, for packing, Yi Jiyong
Make coating layer.Shared share is increasing on the market for plastics package and plastic packet product, especially composite plastic Soft Roll
Dress, has been widely used for the fields such as food, medicine, chemical industry, wherein it is again maximum with food packaging proportion, such as beverage
Packaging, quick-frozen food packaging, cooking food packaging, fast food packaging etc., these products are all brought greatly to people's life
Convenience.
Plastic film is most widely used packaging field.Plastic film can be used for food packaging, electric equipment products packaging,
Commodity packaging, garment packaging etc..They have a common ground, exactly will carry out colored printing to plastic film, and make
MULTILAYER COMPOSITE or vacuum aluminum-coated equal technological operations are also carried out for food packaging.It is therefore desirable to which Plastic film surface free energy is wanted
High, wet tension is big, to be conducive to print the good bond of ink, adhesive or aluminium coated and plastic film；In plastic film
Production is batched with during high-speed packaging, then film surface is required to have certain frictional behaviour to prevent film blocking or skidding；In
When for the packaging such as electric appliance, electronic product, then require film that there is certain antistatic performance etc..
Common plastic film have polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), polyester film (PET),
Polypropylene (PP), nylon etc..Various performance of plastic film are different, and the complexity of printing is also different, the use as packaging material
Way is also different.Polyethylene film is a kind of colourless, tasteless, odorless, translucent avirulent insulating materials, a large amount of to be used as packaging
Bag；Food bag can also make various containers.It is inert material, so more difficult printing, it is necessary to after processing, can just be printed off
Relatively good effect.Light resistance, the resistance to ag(e)ing of polyvinyl chloride film are relatively good and have relatively good tearing-resistant performance, energy thoroughly
Gas is a kind of clean, colourless, transparent film.Polystyrene film is soft and tough and tensile film, completely, colourless and transparent.
Polyester film is colourless, transparent, moisture-proof, airtight, soft, intensity is big, acid and alkali-resistance grease and solvent, is not afraid of to high/low temperature
Material has relatively good surface fastness to ink after electric spark is handled, for packaging and composite material.Nylon film it is strong
Degree is bigger than polyethylene film, and tasteless, nontoxic, impermeable bacterium, oil resistant, resistance to ester, resistance to boiling water and most of solvent are generally used for lotus
Weight, wear-resisting packaging and boiling packaging (reheating of food), it is i.e. printable that it is not required to surface treatment.
Plastic film is gradually mature in the application of packaging field, and the plastic film currently used for packing articles is mainly blow molded
Film, for ordinary packings such as general portable pockets；There is the drawing being prepared by the polyolefine material of uniaxial or biaxial stretching
Film is stretched, such as BOPP is used for food, fruit, drug, medical instrument packaging field；Pass through the various heat shrinkable packages of curtain coating preparation
Film etc..However since various plastics have different performances, with the raising of packing instructions, single polyolefin plastic material is difficult
To meet the needs of packaging.Therefore composite plastic packing film gradually begins to use.
The special commodity in part such as down jackets, bedding occupy biggish space, either commercialization transport or family's storage
It puts, all takes up space, vacuum compression is needed to pack；Rice conveniently also uses vacuum packaging etc. for storage and transportation.Vacuum compression
The application range and demand of packaging are also more and more.
Currently used vacuum compression packing plastics film is mostly nylon-polyethylene, polyester-polyethylene composite membrane, this
Class material, which has, to be obstructed, the high characteristic of intensity.However, being easy to cause film to roll over since vacuum compression packaging hardens article
It is disconnected, and current composite plastic membrane material is harder, lacks flexibility, is easy to produce folding line；In addition, vacuum packaging modeling in the prior art
Expect that film is easy embrittlement, compactness is poor when vacuum packaging, influences to pack effect, and be prone to wear very due to harder after packing
To cracking.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of vacuum compressions to pack Special flexible plastic foil
And preparation method thereof, solve in the prior art that vacuum packaging packing plastics thin film flexible is poor, easily snaps off, Boardy Feeling, no
Wear-resisting problem.Vacuum compression provided by the invention packaging Special flexible plastic foil has good toughness, puncture resistance, resistance to
Grind performance, barrier property, bruise resistance and flexible advantage.
The purpose of the present invention is achieved through the following technical solutions:
A kind of vacuum compression packaging Special flexible plastic foil, the flexible plastic film are followed successively by hot sealing layer, the first increasing from bottom to top
Strong layer, barrier layer, the second enhancement layer and flexible layer；The hot sealing layer, the first enhancement layer, barrier layer, the second enhancement layer and flexibility
The thickness ratio of layer is followed successively by (3 ~ 5): (5 ~ 10): (5 ~ 10): (5 ~ 10): (10 ~ 15).
The present invention is using thermoplastic polyurethane, polyolefin elastomer, linear low density polyethylene (LLDPE) compound as flexible
Layer material overcomes thermoplastic polyurethane and is easy high temperature molten drop, it is difficult to which the defect of blown film, it is compound to realize blown film, and conduct
Flexible layer assigns the good toughness of film, puncture resistance, wear-resisting property.
Vacuum compression is packed Special flexible plastic foil and is packed for vacuum compression, and the flexible layer of outer layer has good anti-machine
Tool damage performance, for clothing, cotton-wadded quilt, rice, food etc. vacuum compression pack, have preferable barrier property, flexibility, very
After empty package, soft touch greatly promotes packaging quality.By test, vacuum compression packs the stretching of Special flexible plastic foil
Intensity reaches 37.6MPa or more, and elongation reaches 453% or more.
Further, the thickness ratio of the hot sealing layer, the first enhancement layer, barrier layer, the second enhancement layer and flexible layer is successively
For (4 ~ 5): (7 ~ 9): (7 ~ 9): (7 ~ 9): (12 ~ 14).
Further, the hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), 15 ~ 25 parts
Ethylene-vinyl acetate copolymer, 10 ~ 20 parts of ethylene-acrylic acid copolymer, 3 ~ 8 parts of ethylene-methacrylic acid copolymer, 2
~ 4 parts of talcum powder；
First enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 2 ~ 4 parts of nanoprecipitation sulphur
Sour barium, 0.8 ~ 1.2 part of aluminate coupling agent；
The barrier layer includes the component of following parts by weight: 100 parts of ethylene-vinyl alcohol copolymer, 15 ~ 25 parts of poly- inclined dichloro
Ethylene, 2 ~ 4 parts of mica powder；
Second enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 2 ~ 4 parts of nanoprecipitation sulphur
Sour barium, 0.8 ~ 1.2 part of aluminate coupling agent；
The flexible layer includes the component of following parts by weight: 100 parts of thermoplastic polyurethane, 10 ~ 20 parts of polyolefin elastomer,
15 ~ 25 parts of linear low density polyethylene (LLDPE), 2 ~ 4 parts of inorganic microsphere.
Compound by ethylene-vinyl alcohol copolymer, polyvinylidene chloride, mica powder, the film of formation, which has, hinders wet, resistance
The barrier properties such as oxygen, moisture-proof, acid and alkali-resistance, resistance to oil immersion, are substantially improved the barrier property of fexible film.
Metallocene PE has good intensity, carries out nanometer enhancing by nanoprecipitation barium sulfate, not only improves
Intensity, and remain the good transparency of film.With the with fastest developing speed and more mature of mPE in metallocene-polyolefin, mPE has
Two series, one kind are with packaging field for main syllabus target film grade, and another kind of is using octene-1 as comonomer
Plastic body.MPE film grade has lower fusing point and apparent melting zone, and in toughness, transparency, thermal viscosity, heat-sealing temperature
Degree is substantially better than conventional polyethylene in terms of low smell etc., can be used for producing packaging bag again, dustbin liner, food packaging,
Oriented film etc..Ethylene-methacrylic acid copolymer is formed by ethylene and methacrylic acid through high pressure, high temperature free radical polymerization,
As packing film and the vigorous agent of coating, glue.
Hot sealing layer uses low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-first
Base acrylic copolymer, talcum powder, heat seal is secured, and smooth opening is good.
It is further preferred that the hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), 20 parts
Ethylene-vinyl acetate copolymer, 15 parts of ethylene-acrylic acid copolymer, 5 parts of ethylene-methacrylic acid copolymer, 3 parts
Talcum powder；
First enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 1 part of aluminate coupling agent；
The barrier layer includes the component of following parts by weight: 100 parts of ethylene-vinyl alcohol copolymer, 20 parts of poly- inclined two chloroethene
Alkene, 3 parts of mica powder；
Second enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 1 part of aluminate coupling agent；
The flexible layer includes the component of following parts by weight: 100 parts of thermoplastic polyurethane, 15 parts of polyolefin elastomer, and 20
The linear low density polyethylene (LLDPE) of part, 3 parts of inorganic microsphere.
Further, the polyolefin elastomer is ethylene-octene copolymer, at least one in ethylene-butene copolymer
Kind；The inorganic microsphere is at least one of glass microsphere, wollastonite pearl, ceramic microbead.Inorganic microsphere is glass microsphere, silicon
At least one of lime stone pearl, ceramic microbead, inorganic microsphere add in polyurethane, and can slide when material is impacted makes
Deformation occurs for plastics so that absorbing impact force reaches toughening purpose.
A method of above-mentioned vacuum compression packaging Special flexible plastic foil is prepared, is included the following steps:
Step 1: according to weight by low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer
Object, ethylene-methacrylic acid copolymer and talcum powder extruding pelletization after mixing, it is stand-by to obtain hot sealing layer plastic pellet；It presses
According to weight by metallocene PE, nanoprecipitation barium sulfate and aluminate coupling agent high speed dispersion, extruder is added
Middle extruding pelletization, obtains the first enhancement layer plastic pellet and the second enhancement layer plastic pellet is stand-by；According to weight by second
Alkene-ethenol copolymer, polyvinylidene chloride and mica powder extruding pelletization after mixing, obtain barrier layer plastic pellet and wait for
With；Thermoplastic polyurethane, polyolefin elastomer, linear low density polyethylene (LLDPE) and inorganic microsphere are mixed according to weight
Extruding pelletization after even, it is stand-by to obtain flexible layer plastic pellet；
Step 2: by hot sealing layer plastic pellet, the first enhancement layer plastic pellet, barrier layer plastic pellet, second in step 1
Enhancement layer plastic pellet and flexible layer plastic pellet are added in the co-extrusion film blowing machine after preheating, are heated to more after extrusion temperature
Layer coextrusion film blowing obtains vacuum compression packaging Special flexible plastic foil.
Further, the extrusion temperature of hot sealing layer plastic pellet is 155 ~ 165 DEG C in the step 1, first enhancing
The extrusion temperature of layer plastic pellet and the second enhancement layer plastic pellet is 175 ~ 185 DEG C, the barrier layer plastic pellet
Extrusion temperature is 190 ~ 230 DEG C, and the extrusion temperature of the flexible layer plastic pellet is 190 ~ 200 DEG C.
Further, the extrusion temperature of hot sealing layer plastic pellet is 150 ~ 160 DEG C in the step 2, first enhancing
The extrusion temperature of layer plastic pellet and the second enhancement layer plastic pellet is 170 ~ 180 DEG C, the barrier layer plastic pellet
Extrusion temperature is 180 ~ 220 DEG C, and the extrusion temperature of the flexible layer plastic pellet is 180 ~ 190 DEG C；Multilayer in the step 2
The co-extrusion die head combined temp of coextrusion film blowing machine is 195-200 DEG C.
Further, the hot sealing layer of vacuum compression packaging Special flexible plastic foil, the first enhancement layer, resistance in the step 2
The thickness of interlayer, the second enhancement layer and flexible layer is followed successively by 3 ~ 5 μm, 5-10 μm, 5-10 μm, 5-10 μm and 10-15 μm.
The beneficial effects of the present invention are: the present invention uses thermoplastic polyurethane, polyolefin elastomer, the poly- second of linear, low density
Alkene, inorganic microsphere compound overcome thermoplastic polyurethane and are easy high temperature molten drop, it is difficult to which blown film lacks as flexible layer material
It falls into, it is compound to realize blown film, and as flexible layer, assign the good toughness of film, puncture resistance, wear-resisting property；Pass through
Ethylene-vinyl alcohol copolymer, polyvinylidene chloride, mica powder are compound, and the film of formation is wet with resistance, hinders oxygen, is moisture-proof, acidproof
The barrier properties such as alkali, resistance to oil immersion, are substantially improved the barrier property of fexible film；Metallocene PE has good intensity, by receiving
Rice blanc fixe carries out nanometer enhancing, not only improves intensity, and remain the good transparency of film；Hot sealing layer uses
Low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, talcum
Powder, heat seal is secured, and smooth opening is good.The plastic film is packed for vacuum compression, and the flexible layer of outer layer has good
Bruise resistance, for clothing, cotton-wadded quilt, rice, food etc. vacuum compression pack, have preferable barrier property, it is soft
Toughness, after vacuum packaging, soft touch greatly promotes packaging quality.By test, vacuum compression packs Special flexible plastic foil
Tensile strength reach 37.6MPa or more, elongation reaches 453% or more.
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
A kind of vacuum compression packaging Special flexible plastic foil, the flexible plastic film are followed successively by hot sealing layer, the first increasing from bottom to top
Strong layer, barrier layer, the second enhancement layer and flexible layer；The hot sealing layer, the first enhancement layer, barrier layer, the second enhancement layer and flexibility
The thickness ratio of layer is followed successively by 3:5:5:5:10；
The hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), and 15 parts of ethene-vinyl acetate is total
Polymers, 10 parts of ethylene-acrylic acid copolymer, 3 parts of ethylene-methacrylic acid copolymer, 2 parts of talcum powder；
First enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 2 parts of nanoprecipitation sulfuric acid
Barium, 0.8 part of aluminate coupling agent；
The barrier layer includes the component of following parts by weight: 100 parts of ethylene-vinyl alcohol copolymer, 15 parts of poly- inclined two chloroethene
Alkene, 2 parts of mica powder；
Second enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 2 parts of nanoprecipitation sulfuric acid
Barium, 0.8 part of aluminate coupling agent；
The flexible layer includes the component of following parts by weight: 100 parts of thermoplastic polyurethane, 10 parts of ethylene-octene copolymer,
15 parts of linear low density polyethylene (LLDPE), 2 parts of glass microsphere.
The preparation method of above-mentioned vacuum compression packaging Special flexible plastic foil, includes the following steps:
Step 1: according to weight by low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer
After mixing, extruding pelletization at being 155 DEG C in temperature obtains hot sealing layer for object, ethylene-methacrylic acid copolymer and talcum powder
Plastic pellet is stand-by；Metallocene PE, nanoprecipitation barium sulfate and aluminate coupling agent high speed are divided according to weight
Dissipate, add in extruder temperature be 175 DEG C at extruding pelletization, obtain the first enhancement layer plastic pellet and the second enhancement layer modeling
Expect that particle is stand-by；According to weight by ethylene-vinyl alcohol copolymer, polyvinylidene chloride and mica powder after mixing,
Extruding pelletization at being 190 DEG C in temperature, it is stand-by to obtain barrier layer plastic pellet；According to weight by thermoplastic polyurethane,
After mixing, extruding pelletization at being 190 DEG C in temperature obtains for polyolefin elastomer, linear low density polyethylene (LLDPE) and inorganic microsphere
It is stand-by to flexible layer plastic pellet；
Step 2: by hot sealing layer plastic pellet, the first enhancement layer plastic pellet, barrier layer plastic pellet, second in step 1
Enhancement layer plastic pellet and flexible layer plastic pellet are added in the co-extrusion film blowing machine after preheating, wherein hot sealing layer plastic pellet
Extrusion temperature be 150 DEG C, the extrusion temperature of the first enhancement layer plastic pellet and the second enhancement layer plastic pellet is
170 DEG C, the extrusion temperature of the barrier layer plastic pellet is 180 DEG C, and the extrusion temperature of the flexible layer plastic pellet is 180
DEG C, the co-extrusion die head combined temp of co-extrusion film blowing machine is 195 DEG C, and Multi-layer co-extrusion film-blowing obtains very after being heated to extrusion temperature
Empty compression packing Special flexible plastic foil, the wherein hot sealing layer of vacuum compression packaging Special flexible plastic foil, the first enhancement layer, resistance
The thickness of interlayer, the second enhancement layer and flexible layer is followed successively by 3 μm, 5 μm, 5 μm, 5 μm and 10 μm.
Embodiment 2
A kind of vacuum compression packaging Special flexible plastic foil, the flexible plastic film are followed successively by hot sealing layer, the first increasing from bottom to top
Strong layer, barrier layer, the second enhancement layer and flexible layer；The hot sealing layer, the first enhancement layer, barrier layer, the second enhancement layer and flexibility
The thickness ratio of layer is followed successively by 5:10:10:10:15；
The hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), and 25 parts of ethene-vinyl acetate is total
Polymers, 20 parts of ethylene-acrylic acid copolymer, 8 parts of ethylene-methacrylic acid copolymer, 4 parts of talcum powder；
First enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 4 parts of nanoprecipitation sulfuric acid
Barium, 1.2 parts of aluminate coupling agent；
The barrier layer includes the component of following parts by weight: 100 parts of ethylene-vinyl alcohol copolymer, 25 parts of poly- inclined two chloroethene
Alkene, 4 parts of mica powder；
Second enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 4 parts of nanoprecipitation sulfuric acid
Barium, 1.2 parts of aluminate coupling agent；
The flexible layer includes the component of following parts by weight: 100 parts of thermoplastic polyurethane, 20 parts of Ethylene/Butylene copolymerization
Object, 25 parts of linear low density polyethylene (LLDPE), 4 parts of wollastonite pearl.
The preparation method of above-mentioned vacuum compression packaging Special flexible plastic foil, includes the following steps:
Step 1: according to weight by low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer
After mixing, extruding pelletization at being 165 DEG C in temperature obtains hot sealing layer for object, ethylene-methacrylic acid copolymer and talcum powder
Plastic pellet is stand-by；Metallocene PE, nanoprecipitation barium sulfate and aluminate coupling agent high speed are divided according to weight
Dissipate, add in extruder temperature be 185 DEG C at extruding pelletization, obtain the first enhancement layer plastic pellet and the second enhancement layer modeling
Expect that particle is stand-by；According to weight by ethylene-vinyl alcohol copolymer, polyvinylidene chloride and mica powder after mixing,
Extruding pelletization at being 230 DEG C in temperature, it is stand-by to obtain barrier layer plastic pellet；According to weight by thermoplastic polyurethane,
After mixing, extruding pelletization at being 200 DEG C in temperature obtains for polyolefin elastomer, linear low density polyethylene (LLDPE) and inorganic microsphere
It is stand-by to flexible layer plastic pellet；
Step 2: by hot sealing layer plastic pellet, the first enhancement layer plastic pellet, barrier layer plastic pellet, second in step 1
Enhancement layer plastic pellet and flexible layer plastic pellet are added in the co-extrusion film blowing machine after preheating, wherein hot sealing layer plastic pellet
Extrusion temperature be 160 DEG C, the extrusion temperature of the first enhancement layer plastic pellet and the second enhancement layer plastic pellet is
180 DEG C, the extrusion temperature of the barrier layer plastic pellet is 220 DEG C, and the extrusion temperature of the flexible layer plastic pellet is 190
DEG C, the co-extrusion die head combined temp of co-extrusion film blowing machine is 200 DEG C, and Multi-layer co-extrusion film-blowing obtains very after being heated to extrusion temperature
Empty compression packing Special flexible plastic foil, the wherein hot sealing layer of vacuum compression packaging Special flexible plastic foil, the first enhancement layer, resistance
The thickness of interlayer, the second enhancement layer and flexible layer is followed successively by 5 μm, 10 μm, 10 μm, 10 μm and 15 μm.
Embodiment 3
A kind of vacuum compression packaging Special flexible plastic foil, the flexible plastic film are followed successively by hot sealing layer, the first increasing from bottom to top
Strong layer, barrier layer, the second enhancement layer and flexible layer；The hot sealing layer, the first enhancement layer, barrier layer, the second enhancement layer and flexibility
The thickness ratio of layer is followed successively by 4:6:6:6:12；
The hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), and 18 parts of ethene-vinyl acetate is total
Polymers, 12 parts of ethylene-acrylic acid copolymer, 4 parts of ethylene-methacrylic acid copolymer, 3 parts of talcum powder；
First enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 0.9 part of aluminate coupling agent；
The barrier layer includes the component of following parts by weight: 100 parts of ethylene-vinyl alcohol copolymer, 18 parts of poly- inclined two chloroethene
Alkene, 3 parts of mica powder；
Second enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 0.9 part of aluminate coupling agent；
The flexible layer includes the component of following parts by weight: 100 parts of thermoplastic polyurethane, 12 parts of ethylene-octene copolymer,
18 parts of linear low density polyethylene (LLDPE), 3 parts of ceramic microbead.
The preparation method of above-mentioned vacuum compression packaging Special flexible plastic foil, includes the following steps:
Step 1: according to weight by low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer
After mixing, extruding pelletization at being 160 DEG C in temperature obtains hot sealing layer for object, ethylene-methacrylic acid copolymer and talcum powder
Plastic pellet is stand-by；Metallocene PE, nanoprecipitation barium sulfate and aluminate coupling agent high speed are divided according to weight
Dissipate, add in extruder temperature be 180 DEG C at extruding pelletization, obtain the first enhancement layer plastic pellet and the second enhancement layer modeling
Expect that particle is stand-by；According to weight by ethylene-vinyl alcohol copolymer, polyvinylidene chloride and mica powder after mixing,
Extruding pelletization at being 200 DEG C in temperature, it is stand-by to obtain barrier layer plastic pellet；According to weight by thermoplastic polyurethane,
After mixing, extruding pelletization at being 195 DEG C in temperature obtains for polyolefin elastomer, linear low density polyethylene (LLDPE) and inorganic microsphere
It is stand-by to flexible layer plastic pellet；
Step 2: by hot sealing layer plastic pellet, the first enhancement layer plastic pellet, barrier layer plastic pellet, second in step 1
Enhancement layer plastic pellet and flexible layer plastic pellet are added in the co-extrusion film blowing machine after preheating, wherein hot sealing layer plastic pellet
Extrusion temperature be 155 DEG C, the extrusion temperature of the first enhancement layer plastic pellet and the second enhancement layer plastic pellet is
175 DEG C, the extrusion temperature of the barrier layer plastic pellet is 190 DEG C, and the extrusion temperature of the flexible layer plastic pellet is 185
DEG C, the co-extrusion die head combined temp of co-extrusion film blowing machine is 198 DEG C, and Multi-layer co-extrusion film-blowing obtains very after being heated to extrusion temperature
Empty compression packing Special flexible plastic foil, the wherein hot sealing layer of vacuum compression packaging Special flexible plastic foil, the first enhancement layer, resistance
The thickness of interlayer, the second enhancement layer and flexible layer is followed successively by 4 μm, 6 μm, 6 μm, 6 μm and 12 μm.
Embodiment 4
A kind of vacuum compression packaging Special flexible plastic foil, the flexible plastic film are followed successively by hot sealing layer, the first increasing from bottom to top
Strong layer, barrier layer, the second enhancement layer and flexible layer；The hot sealing layer, the first enhancement layer, barrier layer, the second enhancement layer and flexibility
The thickness ratio of layer is followed successively by 4:8:8:8:14；
The hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), and 20 parts of ethene-vinyl acetate is total
Polymers, 15 parts of ethylene-acrylic acid copolymer, 5 parts of ethylene-methacrylic acid copolymer, 3 parts of talcum powder；
First enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 1.0 parts of aluminate coupling agent；
The barrier layer includes the component of following parts by weight: 100 parts of ethylene-vinyl alcohol copolymer, 20 parts of poly- inclined two chloroethene
Alkene, 3 parts of mica powder；
Second enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 1.0 parts of aluminate coupling agent；
The flexible layer includes the component of following parts by weight: 100 parts of thermoplastic polyurethane, 15 parts of ethylene-butene copolymer,
20 parts of linear low density polyethylene (LLDPE), 3 parts of ceramic microbead.
The preparation method of above-mentioned vacuum compression packaging Special flexible plastic foil, includes the following steps:
Step 1: according to weight by low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer
After mixing, extruding pelletization at being 160 DEG C in temperature obtains hot sealing layer for object, ethylene-methacrylic acid copolymer and talcum powder
Plastic pellet is stand-by；Metallocene PE, nanoprecipitation barium sulfate and aluminate coupling agent high speed are divided according to weight
Dissipate, add in extruder temperature be 180 DEG C at extruding pelletization, obtain the first enhancement layer plastic pellet and the second enhancement layer modeling
Expect that particle is stand-by；According to weight by ethylene-vinyl alcohol copolymer, polyvinylidene chloride and mica powder after mixing,
Extruding pelletization at being 200 DEG C in temperature, it is stand-by to obtain barrier layer plastic pellet；According to weight by thermoplastic polyurethane,
After mixing, extruding pelletization at being 195 DEG C in temperature obtains for polyolefin elastomer, linear low density polyethylene (LLDPE) and inorganic microsphere
It is stand-by to flexible layer plastic pellet；
Step 2: by hot sealing layer plastic pellet, the first enhancement layer plastic pellet, barrier layer plastic pellet, second in step 1
Enhancement layer plastic pellet and flexible layer plastic pellet are added in the co-extrusion film blowing machine after preheating, wherein hot sealing layer plastic pellet
Extrusion temperature be 155 DEG C, the extrusion temperature of the first enhancement layer plastic pellet and the second enhancement layer plastic pellet is
175 DEG C, the extrusion temperature of the barrier layer plastic pellet is 190 DEG C, and the extrusion temperature of the flexible layer plastic pellet is 185
DEG C, the co-extrusion die head combined temp of co-extrusion film blowing machine is 198 DEG C, and Multi-layer co-extrusion film-blowing obtains very after being heated to extrusion temperature
Empty compression packing Special flexible plastic foil, the wherein hot sealing layer of vacuum compression packaging Special flexible plastic foil, the first enhancement layer, resistance
The thickness of interlayer, the second enhancement layer and flexible layer is followed successively by 4 μm, 8 μm, 8 μm, 8 μm and 14 μm.
Embodiment 5
A kind of vacuum compression packaging Special flexible plastic foil, the flexible plastic film are followed successively by hot sealing layer, the first increasing from bottom to top
Strong layer, barrier layer, the second enhancement layer and flexible layer；The hot sealing layer, the first enhancement layer, barrier layer, the second enhancement layer and flexibility
The thickness ratio of layer is followed successively by 5:8:8:8:13；
The hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), and 18 parts of ethene-vinyl acetate is total
Polymers, 12 parts of ethylene-acrylic acid copolymer, 4 parts of ethylene-methacrylic acid copolymer, 3 parts of talcum powder；
First enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 0.9 part of aluminate coupling agent；
The barrier layer includes the component of following parts by weight: 100 parts of ethylene-vinyl alcohol copolymer, 18 parts of poly- inclined two chloroethene
Alkene, 3 parts of mica powder；
Second enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 0.9 part of aluminate coupling agent；
The flexible layer includes the component of following parts by weight: 100 parts of thermoplastic polyurethane, 12 parts of ethylene-octene copolymer,
18 parts of linear low density polyethylene (LLDPE), 3 parts of ceramic microbead.
The preparation method of above-mentioned vacuum compression packaging Special flexible plastic foil, includes the following steps:
Step 1: according to weight by low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer
After mixing, extruding pelletization at being 160 DEG C in temperature obtains hot sealing layer for object, ethylene-methacrylic acid copolymer and talcum powder
Plastic pellet is stand-by；Metallocene PE, nanoprecipitation barium sulfate and aluminate coupling agent high speed are divided according to weight
Dissipate, add in extruder temperature be 180 DEG C at extruding pelletization, obtain the first enhancement layer plastic pellet and the second enhancement layer modeling
Expect that particle is stand-by；According to weight by ethylene-vinyl alcohol copolymer, polyvinylidene chloride and mica powder after mixing,
Extruding pelletization at being 200 DEG C in temperature, it is stand-by to obtain barrier layer plastic pellet；According to weight by thermoplastic polyurethane,
After mixing, extruding pelletization at being 195 DEG C in temperature obtains for polyolefin elastomer, linear low density polyethylene (LLDPE) and inorganic microsphere
It is stand-by to flexible layer plastic pellet；
Step 2: by hot sealing layer plastic pellet, the first enhancement layer plastic pellet, barrier layer plastic pellet, second in step 1
Enhancement layer plastic pellet and flexible layer plastic pellet are added in the co-extrusion film blowing machine after preheating, wherein hot sealing layer plastic pellet
Extrusion temperature be 155 DEG C, the extrusion temperature of the first enhancement layer plastic pellet and the second enhancement layer plastic pellet is
175 DEG C, the extrusion temperature of the barrier layer plastic pellet is 190 DEG C, and the extrusion temperature of the flexible layer plastic pellet is 185
DEG C, the co-extrusion die head combined temp of co-extrusion film blowing machine is 198 DEG C, and Multi-layer co-extrusion film-blowing obtains very after being heated to extrusion temperature
Empty compression packing Special flexible plastic foil, the wherein hot sealing layer of vacuum compression packaging Special flexible plastic foil, the first enhancement layer, resistance
The thickness of interlayer, the second enhancement layer and flexible layer is followed successively by 5 μm, 8 μm, 8 μm, 8 μm and 13 μm.
Embodiment 6
A kind of vacuum compression packaging Special flexible plastic foil, the flexible plastic film are followed successively by hot sealing layer, the first increasing from bottom to top
Strong layer, barrier layer, the second enhancement layer and flexible layer；The hot sealing layer, the first enhancement layer, barrier layer, the second enhancement layer and flexibility
The thickness ratio of layer is followed successively by 5:8:8:8:13；
The hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), and 25 parts of ethene-vinyl acetate is total
Polymers, 10 parts of ethylene-acrylic acid copolymer, 8 parts of ethylene-methacrylic acid copolymer, 2 parts of talcum powder；
First enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 4 parts of nanoprecipitation sulfuric acid
Barium, 0.8 part of aluminate coupling agent；
The barrier layer includes the component of following parts by weight: 100 parts of ethylene-vinyl alcohol copolymer, 25 parts of poly- inclined two chloroethene
Alkene, 2 parts of mica powder；
Second enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 4 parts of nanoprecipitation sulfuric acid
Barium, 0.8 part of aluminate coupling agent；
The flexible layer includes the component of following parts by weight: 100 parts of thermoplastic polyurethane, 20 parts of ethylene-octene copolymerization
Object, 15 parts of linear low density polyethylene (LLDPE), 4 parts of ceramic microbead.
The preparation method of above-mentioned vacuum compression packaging Special flexible plastic foil, includes the following steps:
Step 1: according to weight by low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer
After mixing, extruding pelletization at being 155 ~ 165 DEG C in temperature obtains heat for object, ethylene-methacrylic acid copolymer and talcum powder
Sealing plastic pellet is stand-by；It is according to weight that metallocene PE, nanoprecipitation barium sulfate and aluminate coupling agent is high
Speed dispersion, add in extruder temperature be 175 ~ 185 DEG C at extruding pelletization, obtain the first enhancement layer plastic pellet and second
Enhancement layer plastic pellet is stand-by；Ethylene-vinyl alcohol copolymer, polyvinylidene chloride and mica powder are mixed according to weight
After uniformly, it is stand-by to obtain barrier layer plastic pellet for extruding pelletization at being 190 ~ 230 DEG C in temperature；It will be hot according to weight
Plastic polyurethane, polyolefin elastomer, linear low density polyethylene (LLDPE) and inorganic microsphere are 190 ~ 200 in temperature after mixing
It is stand-by to obtain flexible layer plastic pellet for extruding pelletization at DEG C；
Step 2: by hot sealing layer plastic pellet, the first enhancement layer plastic pellet, barrier layer plastic pellet, second in step 1
Enhancement layer plastic pellet and flexible layer plastic pellet are added in the co-extrusion film blowing machine after preheating, wherein hot sealing layer plastic pellet
Extrusion temperature be 150 ~ 160 DEG C, the extrusion temperature of the first enhancement layer plastic pellet and the second enhancement layer plastic pellet
Degree is 170 ~ 180 DEG C, and the extrusion temperature of the barrier layer plastic pellet is 180 ~ 220 DEG C, and the flexible layer plastic pellet squeezes
Temperature is 180 ~ 190 DEG C out, and the co-extrusion die head combined temp of co-extrusion film blowing machine is 195 ~ 200 DEG C, is heated to extrusion temperature
Multi-layer co-extrusion film-blowing obtains vacuum compression packaging Special flexible plastic foil afterwards, and wherein vacuum compression packs Special flexible plastic foil
Hot sealing layer, the first enhancement layer, barrier layer, the second enhancement layer and flexible layer thickness be followed successively by 3 ~ 5 μm, 5 ~ 10 μm, 5 ~ 10 μm, 5 ~
10 μm and 10 ~ 15 μm.
Comparative example 1
A kind of vacuum compression packaging Special flexible plastic foil, the flexible plastic film are followed successively by hot sealing layer, barrier layer from bottom to top
And flexible layer；The hot sealing layer, barrier layer, flexible layer thickness ratio be followed successively by 5:8:13；
The hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), and 18 parts of ethene-vinyl acetate is total
Polymers, 12 parts of ethylene-acrylic acid copolymer, 4 parts of ethylene-methacrylic acid copolymer, 3 parts of talcum powder；
The barrier layer includes the component of following parts by weight: 100 parts of ethylene-vinyl alcohol copolymer, 18 parts of poly- inclined two chloroethene
Alkene, 3 parts of mica powder；
The flexible layer includes the component of following parts by weight: 100 parts of thermoplastic polyurethane, 12 parts of ethylene-octene copolymer,
18 parts of linear low density polyethylene (LLDPE), 3 parts of ceramic microbead.
The preparation method of above-mentioned vacuum compression packaging Special flexible plastic foil, includes the following steps:
Step 1: according to weight by low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer
After mixing, extruding pelletization at being 160 DEG C in temperature obtains hot sealing layer for object, ethylene-methacrylic acid copolymer and talcum powder
Plastic pellet is stand-by；Ethylene-vinyl alcohol copolymer, polyvinylidene chloride and mica powder are uniformly mixed according to weight
Afterwards, extruding pelletization at being 200 DEG C in temperature, it is stand-by to obtain barrier layer plastic pellet；According to weight by thermoplastic poly ammonia
Ester, polyolefin elastomer, linear low density polyethylene (LLDPE) and inorganic microsphere after mixing, temperature be 195 DEG C at extruding pelletization,
It is stand-by to obtain flexible layer plastic pellet；
Step 2: preheating is added in hot sealing layer plastic pellet, barrier layer plastic pellet and the flexible layer plastic pellet in step 1
In co-extrusion film blowing machine afterwards, wherein the extrusion temperature of hot sealing layer plastic pellet is 155 DEG C, the barrier layer plastic pellet
Extrusion temperature is 190 DEG C, and the extrusion temperature of the flexible layer plastic pellet is 185 DEG C, the co-extrusion die head of co-extrusion film blowing machine
Combined temp is 198 DEG C, and Multi-layer co-extrusion film-blowing obtains vacuum compression packaging Special flexible plastic foil after being heated to extrusion temperature,
The thickness of the hot sealing layer of middle vacuum compression packaging Special flexible plastic foil, barrier layer and flexible layer is followed successively by 5 μm, 8 μm and 13 μm.
Comparative example 2
A kind of vacuum compression packaging Special flexible plastic foil, the flexible plastic film are followed successively by hot sealing layer, the first increasing from bottom to top
Strong layer, the second enhancement layer and flexible layer；The hot sealing layer, the first enhancement layer, the second enhancement layer and flexible layer thickness ratio successively
For 5:8:8:13；
The hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), and 18 parts of ethene-vinyl acetate is total
Polymers, 12 parts of ethylene-acrylic acid copolymer, 4 parts of ethylene-methacrylic acid copolymer, 3 parts of talcum powder；
First enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 0.9 part of aluminate coupling agent；
Second enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 0.9 part of aluminate coupling agent；
The flexible layer includes the component of following parts by weight: 100 parts of thermoplastic polyurethane, 12 parts of ethylene-octene copolymer,
18 parts of linear low density polyethylene (LLDPE), 3 parts of ceramic microbead.
The preparation method of above-mentioned vacuum compression packaging Special flexible plastic foil, includes the following steps:
Step 1: according to weight by low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer
After mixing, extruding pelletization at being 160 DEG C in temperature obtains hot sealing layer for object, ethylene-methacrylic acid copolymer and talcum powder
Plastic pellet is stand-by；Metallocene PE, nanoprecipitation barium sulfate and aluminate coupling agent high speed are divided according to weight
Dissipate, add in extruder temperature be 180 DEG C at extruding pelletization, obtain the first enhancement layer plastic pellet and the second enhancement layer modeling
Expect that particle is stand-by；According to weight by thermoplastic polyurethane, polyolefin elastomer, linear low density polyethylene (LLDPE) and inorganic micro-
After mixing, it is stand-by to obtain flexible layer plastic pellet to ball for extruding pelletization at being 195 DEG C in temperature；
Step 2: by step 1 hot sealing layer plastic pellet, the first enhancement layer plastic pellet, the second enhancement layer plastic pellet and
Flexible layer plastic pellet is added in the co-extrusion film blowing machine after preheating, and wherein the extrusion temperature of hot sealing layer plastic pellet is 155
DEG C, the extrusion temperature of the first enhancement layer plastic pellet and the second enhancement layer plastic pellet is 175 DEG C, the flexible layer
The extrusion temperature of plastic pellet is 185 DEG C, and the co-extrusion die head combined temp of co-extrusion film blowing machine is 198 DEG C, is heated to squeezing out
Multi-layer co-extrusion film-blowing obtains vacuum compression packaging Special flexible plastic foil after temperature, and wherein vacuum compression packs Special flexible plastics
The hot sealing layer of film, the first enhancement layer, the second enhancement layer and flexible layer thickness be followed successively by 5 μm, 8 μm, 8 μm and 13 μm.
Comparative example 3
A kind of vacuum compression packaging Special flexible plastic foil, the flexible plastic film are followed successively by hot sealing layer, the first increasing from bottom to top
Strong layer, barrier layer and the second enhancement layer；The hot sealing layer, the first enhancement layer, barrier layer, the second enhancement layer thickness ratio be followed successively by
5:8:8:8；
The hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), and 18 parts of ethene-vinyl acetate is total
Polymers, 12 parts of ethylene-acrylic acid copolymer, 4 parts of ethylene-methacrylic acid copolymer, 3 parts of talcum powder；
First enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 0.9 part of aluminate coupling agent；
The barrier layer includes the component of following parts by weight: 100 parts of ethylene-vinyl alcohol copolymer, 18 parts of poly- inclined two chloroethene
Alkene, 3 parts of mica powder；
Second enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 0.9 part of aluminate coupling agent.
The preparation method of above-mentioned vacuum compression packaging Special flexible plastic foil, includes the following steps:
Step 1: according to weight by low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer
After mixing, extruding pelletization at being 160 DEG C in temperature obtains hot sealing layer for object, ethylene-methacrylic acid copolymer and talcum powder
Plastic pellet is stand-by；Metallocene PE, nanoprecipitation barium sulfate and aluminate coupling agent high speed are divided according to weight
Dissipate, add in extruder temperature be 180 DEG C at extruding pelletization, obtain the first enhancement layer plastic pellet and the second enhancement layer modeling
Expect that particle is stand-by；According to weight by ethylene-vinyl alcohol copolymer, polyvinylidene chloride and mica powder after mixing,
Extruding pelletization at being 200 DEG C in temperature, it is stand-by to obtain barrier layer plastic pellet；
Step 2: by hot sealing layer plastic pellet, the first enhancement layer plastic pellet, barrier layer plastic pellet, second in step 1
Enhancement layer plastic pellet is added in the co-extrusion film blowing machine after preheating, and wherein the extrusion temperature of hot sealing layer plastic pellet is 155
DEG C, the extrusion temperature of the first enhancement layer plastic pellet and the second enhancement layer plastic pellet is 175 DEG C, the barrier layer
The extrusion temperature of plastic pellet is 190 DEG C, and the co-extrusion die head combined temp of co-extrusion film blowing machine is 198 DEG C, is heated to squeezing out
Multi-layer co-extrusion film-blowing obtains vacuum compression packaging Special flexible plastic foil after temperature, and wherein vacuum compression packs Special flexible plastics
The hot sealing layer of film, the first enhancement layer, barrier layer, the second enhancement layer thickness are followed successively by 5 μm, 8 μm, 8 μm and 8 μm.
The vacuum compression packaging being prepared in 1 ~ embodiment of above-described embodiment 6 and 1 ~ comparative example of comparative example 3 is dedicated soft
The test result of property plastic foil is as shown in table 1, and wherein comparative example 1 does not have enhancement layer, and wherein comparative example 2 does not have barrier layer,
Wherein comparative example 3 does not have flexible layer.
Table 1
As can be seen that the tensile strength of 1 ~ embodiment of embodiment 6 and elongation are larger from the data of table 1, and batches nothing and split
Line has excellent flexibility.Do not have enhancement layer in comparative example 1 reduces so as to cause tensile strength, does not have in comparative example 3
Flexible layer also results in tensile strength reduction；Comparative example 1 and comparative example 3 are easy to appear the white crackle of folding line under 3mm diameter,
Its flexibility is poor.
Claims (8)
1. a kind of vacuum compression packs Special flexible plastic foil, which is characterized in that the flexible plastic film is followed successively by from bottom to top
Hot sealing layer, the first enhancement layer, barrier layer, the second enhancement layer and flexible layer；The hot sealing layer, the first enhancement layer, barrier layer, second
The thickness of enhancement layer and flexible layer ratio is followed successively by (3 ~ 5): (5 ~ 10): (5 ~ 10): (5 ~ 10): (10 ~ 15)；
The hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), 15 ~ 25 parts of ethene-vinyl acetate
Copolymer, 10 ~ 20 parts of ethylene-acrylic acid copolymer, 3 ~ 8 parts of ethylene-methacrylic acid copolymer, 2 ~ 4 parts of talcum powder；
First enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 2 ~ 4 parts of nanoprecipitation sulphur
Sour barium, 0.8 ~ 1.2 part of aluminate coupling agent；
The barrier layer includes the component of following parts by weight: 100 parts of ethylene-vinyl alcohol copolymer, 15 ~ 25 parts of poly- inclined dichloro
Ethylene, 2 ~ 4 parts of mica powder；
Second enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 2 ~ 4 parts of nanoprecipitation sulphur
Sour barium, 0.8 ~ 1.2 part of aluminate coupling agent；
The flexible layer includes the component of following parts by weight: 100 parts of thermoplastic polyurethane, 10 ~ 20 parts of polyolefin elastomer,
15 ~ 25 parts of linear low density polyethylene (LLDPE), 2 ~ 4 parts of inorganic microsphere.
2. a kind of vacuum compression according to claim 1 packs Special flexible plastic foil, which is characterized in that the heat-sealing
The thickness ratio of layer, the first enhancement layer, barrier layer, the second enhancement layer and flexible layer is followed successively by (4 ~ 5): (7 ~ 9): (7 ~ 9): and (7 ~ 9):
(12 ~ 14).
3. a kind of vacuum compression according to claim 1 packs Special flexible plastic foil, it is characterised in that:
The hot sealing layer includes the component of following parts by weight: 100 parts of low density polyethylene (LDPE), and 20 parts of ethene-vinyl acetate is total
Polymers, 15 parts of ethylene-acrylic acid copolymer, 5 parts of ethylene-methacrylic acid copolymer, 3 parts of talcum powder；
First enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 1 part of aluminate coupling agent；
The barrier layer includes the component of following parts by weight: 100 parts of ethylene-vinyl alcohol copolymer, 20 parts of poly- inclined two chloroethene
Alkene, 3 parts of mica powder；
Second enhancement layer includes the component of following parts by weight: 100 parts of metallocene PE, 3 parts of nanoprecipitation sulfuric acid
Barium, 1 part of aluminate coupling agent；
The flexible layer includes the component of following parts by weight: 100 parts of thermoplastic polyurethane, 15 parts of polyolefin elastomer, and 20
The linear low density polyethylene (LLDPE) of part, 3 parts of inorganic microsphere.
4. a kind of vacuum compression according to claim 1 packs Special flexible plastic foil, which is characterized in that the polyolefin
Elastomer is at least one of ethylene-octene copolymer, ethylene-butene copolymer；The inorganic microsphere is glass microsphere, silicon
At least one of lime stone pearl, ceramic microbead.
5. a kind of described in any item preparation methods of vacuum compression packaging Special flexible plastic foil of claim 1 ~ 5, feature
It is, includes the following steps:
Step 1: according to weight by low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer
Object, ethylene-methacrylic acid copolymer and talcum powder extruding pelletization after mixing, it is stand-by to obtain hot sealing layer plastic pellet；It presses
According to weight by metallocene PE, nanoprecipitation barium sulfate and aluminate coupling agent high speed dispersion, extruder is added
Middle extruding pelletization, obtains the first enhancement layer plastic pellet and the second enhancement layer plastic pellet is stand-by；According to weight by second
Alkene-ethenol copolymer, polyvinylidene chloride and mica powder extruding pelletization after mixing, obtain barrier layer plastic pellet and wait for
With；Thermoplastic polyurethane, polyolefin elastomer, linear low density polyethylene (LLDPE) and inorganic microsphere are mixed according to weight
Extruding pelletization after even, it is stand-by to obtain flexible layer plastic pellet；
Step 2: by hot sealing layer plastic pellet, the first enhancement layer plastic pellet, barrier layer plastic pellet, second in step 1
Enhancement layer plastic pellet and flexible layer plastic pellet are added in the co-extrusion film blowing machine after preheating, overlap from bottom to top, heat
Multi-layer co-extrusion film-blowing obtains vacuum compression packaging Special flexible plastic foil after to extrusion temperature.
6. a kind of preparation method of vacuum compression packaging Special flexible plastic foil according to claim 5, which is characterized in that
The extrusion temperature of hot sealing layer plastic pellet is 155 ~ 165 DEG C in the step 1, the first enhancement layer plastic pellet and described
The extrusion temperature of second enhancement layer plastic pellet is 175 ~ 185 DEG C, and the extrusion temperature of the barrier layer plastic pellet is 190 ~ 230
DEG C, the extrusion temperature of the flexible layer plastic pellet is 190 ~ 200 DEG C.
7. a kind of preparation method of vacuum compression packaging Special flexible plastic foil according to claim 5, which is characterized in that
The extrusion temperature of hot sealing layer plastic pellet is 150 ~ 160 DEG C in the step 2, the first enhancement layer plastic pellet and described
The extrusion temperature of second enhancement layer plastic pellet is 170 ~ 180 DEG C, and the extrusion temperature of the barrier layer plastic pellet is 180 ~ 220
DEG C, the extrusion temperature of the flexible layer plastic pellet is 180 ~ 190 DEG C；The coextruding die of co-extrusion film blowing machine in the step 2
Head combined temp is 195 ~ 200 DEG C.
8. a kind of preparation method of vacuum compression packaging Special flexible plastic foil according to claim 5, which is characterized in that
The vacuum compression packaging hot sealing layer of Special flexible plastic foil in the step 2, the first enhancement layer, barrier layer, the second enhancement layer and
The thickness of flexible layer is followed successively by 3 ~ 5 μm, 5 ~ 10 μm, 5 ~ 10 μm, 5 ~ 10 μm and 10 ~ 15 μm.
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| CN115431602A (en) * | 2022-09-02 | 2022-12-06 | 华润化学材料科技股份有限公司 | Medicine insulation can bounding wall |
| CN116001398A (en) * | 2023-03-22 | 2023-04-25 | 山东旭喜新材料科技有限公司 | Olefin film capable of replacing aluminum plastic film, preparation method thereof and packaging bag |
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