CN106945370B

CN106945370B - Aluminum plastic aseptic package material, packing box and preparation method, application

Info

Publication number: CN106945370B
Application number: CN201610833493.6A
Authority: CN
Inventors: 吴建国
Original assignee: Changzhou Skylong Packaging Machinery Co Ltd
Current assignee: Changzhou Skylong Packaging Machinery Co Ltd
Priority date: 2016-09-19
Filing date: 2016-09-19
Publication date: 2019-10-18
Anticipated expiration: 2036-09-19
Also published as: CN106945370A

Abstract

The invention discloses a kind of aluminum plastic aseptic package material, packing box and preparation methods, application.The material has six kinds of structures, and structure one or two successively includes: PP film, PP sheet material, adhesive phase, aluminium foil, adhesive phase and CPP, and the two is that adhesive phase type is different；Structure three~six successively includes: PP film, BOPP or CPP, resin layer, PP sheet material, adhesive phase, aluminium foil, adhesive phase and CPP, and four kinds of structures are that adhesive phase type is different.Packing box of the invention not only can wet sterilization, can also high temperature boiling or spray sterilization；Sterilization process without dead angle, more thoroughly, it is ensured that the safety of product 100% makes food can long term storage；Sterilization heat transfer rate is fast, and the time is short；It is not easy water penetration；Inner wall can be without adding plasticiser, and heavy metal free element, when for holding vegetable protein liquid beverage or acidic beverages, tinned fruit or solid-state food, safer, hygienic, environmentally friendly, transportation cost is lower.

Description

Aluminum plastic aseptic package material, packing box and preparation method, application

Technical field

The present invention relates to a kind of aluminum plastic aseptic package material, packing box and preparation methods, application.

Background technique

What Tetrapack company, Sweden and Kang Mei company, Switzerland produced adds particle or solid-state tinned food for holding neutral liquid Paper plastic-aluminum aseptic packaging box, generally include 8 layers, structure composite layer successively use PP layers cardboard layer PE layers EAA layers aluminium foil Layer EAA layers PE layers PP layers.But because containing paper sheet in the packing box structure, not can be carried out high-temperature water boil sterilization (for example, 121 DEG C of cooking disinfections of water-bath) or spray sterilization, 121 DEG C of wet sterilizations can only be carried out, and wet sterilization cannot usually reach to food Product are thoroughly sterilized to commercial sterilization.Meanwhile due also to compressed air and the positive and negative pressure of high-temperature steam are easy to form in wet sterilization Dead angle can not kill the Bacillus in food, and food qualification rate is caused to can only achieve 98%.In addition, due to cardboard layer have every Thermal effect and steam heat transfer is slow, unstable so as to cause carton centers temperature when wet sterilization, food safety cannot be guaranteed.And And the tinned food wet sterilization time that general paper plastic-aluminum sterility contains is long, needing 120~150min, (wherein, heat up 30min Left and right keeps the temperature 60~70min, 30~50min of cooling down), the paper in paper plastic-aluminum aseptic packaging box is easy to appear water penetration.

Currently, in the market can 121 DEG C of boiling high temperature sterilizations vegetable protein liquid beverage packaging frequently with iron flask or aluminium Tank, can 121 DEG C of boiling high temperature sterilization solid-state food cans packaging frequently with iron flask and vial, however, iron flask or aluminium pot are rich Containing heavy metal, easily health is damaged；Vial is easily broken, and safety is low for consumers；Moreover, above-mentioned iron The defects of packaging such as tank, aluminium pot and vial is heavier, high there is also transportation cost.Those problems demands solve.

Summary of the invention

Technical problem to be solved by the present invention lies in overcome paper plastic-aluminum aseptic packaging box in the prior art not can be carried out High temperature boiling or spray sterilization, wet sterilization can only be carried out, thus cause sterilization be not thorough, food qualification rate can only achieve 98%, heat transfer is slowly, the paper of long sterilizing time, low output, packing box is easy water penetration, the shelf-life of food is only 6~December etc. Defect provides a kind of aluminum plastic aseptic package material, packing box and preparation method, application.Plastic-aluminum aseptic packaging box of the invention is not Wet sterilization can be only carried out, high temperature boiling or spray sterilization (digestion resistant) can be also carried out；Temperature is uniform, and sterilization process is without dead Angle, more thoroughly, it is ensured that the safety of product 100%, to make food can long term storage；Heat transfer rate is fast in sterilization process, kills The bacterium time is short, and packing box is also less prone to water penetration；Its inner wall can be without adding plasticiser, heavy metal free element, for holding plant When the acidic beverages of 3~4.6 range of protein liquid beverage or pH value, tinned fruit or solid-state food, safer, hygienic, ring It protects, transportation cost is lower.

The present invention solves above-mentioned technical problem by the following technical programs.

The present invention provides a kind of aluminum plastic aseptic package materials, are structure one, structure two, structure three, structure four, structure Five or structure six；

The structure one successively includes: polypropylene film, crystalline p p sheet, the first propylene and ethylene polymer resin layer, first Ethylene acrylic acid co polymer layer (EAA layers of abbreviation), aluminium foil, the second ethylene acrylic acid co polymer layer, the second propylene and ethylene polymerization tree Rouge layer and cast polypropylene film (CPP)；

The structure two successively includes: polypropylene film, crystalline p p sheet, the first polyurethane adhesive layer, aluminium foil, second Polyurethane adhesive layer and cast polypropylene film (CPP)；

The structure three successively includes: polypropylene film, bidirectional stretching polypropylene film (BOPP) or the first curtain coating poly- third Alkene film (CPP), third propylene and ethylene polymer resin layer, crystalline p p sheet, the first propylene and ethylene polymer resin layer, the first ethylene Acrylic acid co-polymer layer (EAA layers of abbreviation), aluminium foil, the second ethylene acrylic acid co polymer layer, the second propylene and ethylene polymer resin layer With the second cast polypropylene film (CPP)；

The structure four successively includes: polypropylene film, bidirectional stretching polypropylene film (BOPP) or the first curtain coating poly- third Alkene film (CPP), the first propylene and ethylene polymer resin layer, crystalline p p sheet, the second propylene and ethylene polymer resin layer, ethylene, propylene Acid copolymer layer (EAA layers of abbreviation), aluminium foil, polyurethane adhesive layer and the second cast polypropylene film (CPP)；

The structure five successively includes: polypropylene film, bidirectional stretching polypropylene film (BOPP) or the first curtain coating poly- third Alkene film (CPP), the first propylene and ethylene polymer resin layer, crystalline p p sheet, polyurethane adhesive layer, aluminium foil, ethylene acrylic Copolymer layer, the second propylene and ethylene polymer resin layer and the second cast polypropylene film (CPP)；

The structure six successively includes: polypropylene film, bidirectional stretching polypropylene film (BOPP) or the first curtain coating poly- third Alkene film (CPP), propylene and ethylene polymer resin layer, crystalline p p sheet, the first polyurethane adhesive layer, aluminium foil, the second polyurethane Adhesive phase and the second cast polypropylene film (CPP).

The thickness for the aluminum plastic aseptic package material that one~structure of structure of the invention six forms can be conventional for this field, preferably It independently is 280~600 μm.

In one~structure of structure six, the thickness of the polypropylene film can be conventional for this field, independently preferably is 10 ~15 μm.

In one~structure of structure six, the crystalline p p sheet can be that the three-layer co-extruded curtain coating white milk of this field routine is white Film or hyaline membrane.The thickness of the crystalline p p sheet can be conventional for this field, independently preferably is 240~500 μm, more preferably It independently is 280 μm.

First propylene and ethylene polymer resin layer described in structure one, three~structure of structure five or second propylene and ethylene are poly- Resin layer, third propylene and ethylene polymer resin layer described in structure three, propylene and ethylene polymer resin layer described in structure six Raw material components are generally made of polypropylene and polyethylene.The polyacrylic content can be conventional for this field, preferably independent Ground is 65~80%, and the content of the polyethylene can be conventional for this field, independently preferably is 20~35%, above-mentioned percentage Mass percent for each component relative to ethylene propylene polymerization resin.

First propylene and ethylene polymer resin layer described in structure one, three~structure of structure five or second propylene and ethylene are poly- Resin layer, third propylene and ethylene polymer resin layer described in structure three, third propylene and ethylene polymer resin described in structure three The thickness of layer can be conventional for this field, independently preferably is 10~15nm.

First ethylene acrylic acid co polymer layer described in structure one and structure three or second ethylene acrylic acid co polymer The material of ethylene acrylic acid co polymer layer described in layer, structure four and structure five is generally the ethylene acrylic of this field routine Copolymer.First ethylene acrylic acid co polymer layer described in structure one and structure three or the second ethylene acrylic acid co polymer layer Thickness, ethylene acrylic acid co polymer layer described in structure four and structure five thickness be this field routine, it is preferably independent Ground is 10~15nm.

In one~structure of structure six, the thickness of the aluminium foil can be this field routine, preferably it independently is 6.35~ 6.5μm。

In structure one and structure two, the thickness of the cast polypropylene film can be this field routine, preferably be 30~70 μm.

The material of first polyurethane adhesive layer described in structure two and structure six or second polyurethane adhesive layer, The material of polyurethane adhesive layer described in structure four and structure five may generally be polyurethane binder of this field routine.Structure Two and structure six described in institute in the first polyurethane adhesive layer or second polyurethane adhesive layer, structure four and structure five The thickness for stating polyurethane adhesive layer can be this field routine, preferably independently be 1~2 μm.

In three~structure of structure six, the bidirectional stretching polypropylene film can be the biaxial stretching polypropylene of this field routine Alkene film.The thickness of the bidirectional stretching polypropylene film can be this field routine, preferably independently be 15~25nm.

In three~structure of structure six, first cast polypropylene film (CPP) is also referred to as un-stretched polypropylene film, It can be that three laminar flows of this field routine prolong co-extrusion polypropylene film.The material of first cast polypropylene film can be this Field is conventional, and general middle layer is homopolypropylene material, and two boundary layers are ternary polymerized polypropylene.First cast polypropylene The thickness of film can be this field routine, preferably independently be 30~70nm.

In three~structure of structure six, the thickness of second cast polypropylene film can be this field routine, preferably It independently is 30~70 μm.

The present invention also provides a kind of preparation method of aluminum plastic aseptic package material, the aluminum plastic aseptic package materials For the structure one, the structure two, the structure three, the structure four, the structure five or the structure six:

The preparation method of the aluminum plastic aseptic package material of the structure one includes the following steps:

(1) one polypropylene film is formed by curtain coating extrusion composite technology in the side of crystalline p p sheet, it is multiple that plastics is made Condensation material coiled material；

(2) through coextrusion processes, one first propylene and ethylene is sequentially formed in the other side of step (1) described crystalline p p sheet Polymer resin layer and one first ethylene acrylic acid co polymer layer；Wherein, the first propylene and ethylene polymer resin layer is gathered with described Polypropylene sheet is connected, and the first ethylene acrylic acid co polymer layer is connected with aluminium foil；

(3) through coextrusion processes, one second ethylene-acrylic acid copolymer is sequentially formed in the other side of step (2) described aluminium foil Nitride layer and one second propylene and ethylene polymer resin layer；Wherein, the second propylene and ethylene polymer resin layer and cast polypropylene are thin Film is connected, and the second ethylene acrylic acid co polymer layer is connected with the aluminium foil；

The preparation method of the aluminum plastic aseptic package material of the structure two includes the following steps:

(2) other side of step (1) described crystalline p p sheet, the side with aluminium foil is through dry type composite joint, described poly- Polypropylene sheet and the intermediate of the aluminium foil form one first polyurethane adhesive layer；

(3) other side of step (2) described aluminium foil, the side with cast polypropylene film is through dry type composite joint, in institute It states cast polypropylene film and the intermediate of the aluminium foil forms one second polyurethane adhesive layer；

The preparation method of the aluminum plastic aseptic package material of the structure three includes the following steps:

(1) side in the side of bidirectional stretching polypropylene film or the first cast polypropylene film, with crystalline p p sheet It is squeezed out curtain coating compound thermal and closes connection, " bidirectional stretching polypropylene film or first cast polypropylene film " and described poly- The intermediate of polypropylene sheet forms a third propylene and ethylene polymer resin layer, and plastic composite coiled material is made；

(2) other side of step (1) bidirectional stretching polypropylene film or first cast polypropylene film, passes through It is cast extrusion composite technology and forms a polypropylene film；

(3) through coextrusion processes, one first propylene and ethylene polymerization tree is sequentially formed in the other side of the crystalline p p sheet Rouge layer and the first ethylene acrylic acid co polymer layer；Wherein, the first propylene and ethylene polymer resin layer and the crystalline p p sheet It is connected, the first ethylene acrylic acid co polymer layer is connected with aluminium foil；

(4) through coextrusion processes, one second ethylene-acrylic acid copolymer is sequentially formed in the other side of step (3) described aluminium foil Nitride layer and the second propylene and ethylene polymer resin layer；Wherein, the second propylene and ethylene polymer resin layer and the second cast polypropylene Film is connected, and the second ethylene acrylic acid co polymer layer is connected with the aluminium foil；

The preparation method of the aluminum plastic aseptic package material of the structure four includes the following steps:

(1) side of bidirectional stretching polypropylene film or the first cast polypropylene film is passed through with the side of crystalline p p sheet It squeezes out curtain coating compound thermal and closes connection, at " bidirectional stretching polypropylene film or first cast polypropylene film " and described poly- third The intermediate of alkene sheet material forms one first propylene and ethylene polymer resin layer, and plastic composite coiled material is made；

(2) other side of step (1) bidirectional stretching polypropylene film or the first cast polypropylene film, passes through curtain coating Extrusion composite technology forms a polypropylene film；

(3) through coextrusion processes, one second propylene and ethylene polymerization tree is sequentially formed in the other side of the crystalline p p sheet Rouge layer and an ethylene acrylic acid co polymer layer；Wherein, the second propylene and ethylene polymer resin layer and the crystalline p p sheet phase Connection, the ethylene acrylic acid co polymer layer are connected with aluminium foil；

(4) other side of step (3) described aluminium foil, with the second cast polypropylene film through dry type composite joint, in institute It states the second cast polypropylene film and the intermediate of the aluminium foil forms a polyurethane adhesive layer；

The preparation method of the aluminum plastic aseptic package material of the structure five includes the following steps:

(2) in the other side of step (1) bidirectional stretching polypropylene film or the first cast polypropylene film, pass through stream Prolong extrusion composite technology and forms a polypropylene film

(3) in the other side of the crystalline p p sheet, with aluminium foil through dry type composite joint, in the crystalline p p sheet and institute It states the intermediate of aluminium foil and forms a polyurethane adhesive layer；

(4) through coextrusion processes, the other side of step (3) described aluminium foil sequentially form an ethylene acrylic acid co polymer layer and One second propylene and ethylene polymer resin layer；Wherein, the second propylene and ethylene polymer resin layer and the second cast polypropylene film It is connected, the ethylene acrylic acid co polymer layer is connected with the aluminium foil；

The preparation method of the aluminum plastic aseptic package material of the structure six includes the following steps:

(1) side in the side of bidirectional stretching polypropylene film or the first cast polypropylene film, with crystalline p p sheet It is squeezed out curtain coating compound thermal and closes connection, " bidirectional stretching polypropylene film or first cast polypropylene film " and described poly- The intermediate of polypropylene sheet forms a propylene and ethylene polymer resin layer, and plastic composite coiled material is made；

(2) in the other side of step (1) bidirectional stretching polypropylene film or first cast polypropylene film, lead to It crosses curtain coating extrusion composite technology and forms a polypropylene film

(3) in the other side of the crystalline p p sheet, with aluminium foil through dry type composite joint, in the crystalline p p sheet and institute It states the intermediate of aluminium foil and forms one first polyurethane adhesive layer；

(4) in the other side of step (3) aluminium foil, with the second cast polypropylene film through dry type composite joint, in institute It states aluminium foil and the intermediate of second cast polypropylene film forms one second polyurethane adhesive layer.

Structure one and the step of structure two in (1), the crystalline p p sheet is before carrying out curtain coating extrusion composite technology, preferably Ground first carries out surface printing.Wherein, the operation of the surface printing preferably uses flexible printing machine to be printed.It is described Table print refer to and printed on thick plastic sheet after, the process after bag making etc., technique of the picture and text of printing on the surface of finished product. The step of surface printing and condition can routinely be selected by this field, generally print different patterns according to actual needs Or font.

Wherein, according to common sense in the field it is found that the crystalline p p sheet can generally carry out surface print on flexible printing machine When brush, it is completed at the same time the operation of punching or impression dotted line.According to common sense in the field, if the aluminium of the structure one or the structure two It when modeling aseptic packaging material is used to prepare the packing box of beverage, then needs to be punched on crystalline p p sheet, so that intubation is used. If the aluminum plastic aseptic package material of the structure one or the structure two is used to prepare the packing box of can, need poly- third Impression dotted line is carried out on alkene sheet material, so that tearing notch opens a tin food.

Equipment used by the impression dotted line is generally the online rotary pressure of flexible printing machine of this field routine Trace unit, step and condition can routinely be selected by this field.The impression dotted line refers to the packet of liquid or solid-state food Tearing notch dotted line is formed on mounted box top, the position of the tearing notch dotted line is that this field is conventional, preferably at the top of packing box at a distance from To be 2.5~3.5mm at a distance from 12.5~13.5mm, with sealing wire；It is 13mm at a distance from more preferably at the top of packing box, with weldering The distance of wiring is 3mm.

In the step of one~structure of structure two (1), three~structure of structure six the step of (2) in, the curtain coating squeezes out compound Technique is also referred to as cast extrusion coated technique, and step and condition can routinely be selected by this field.

In the step of structure one (2) and step (3), structure three and the step of structure four in (3), structure three and structure five In step (4), equipment used by the coextrusion processes may generally be the series connection curtain coating extruder and pressure of this field routine Roller, step and condition can routinely be selected by this field.

In the step of structure two (2), equipment used by the dry type composite joint is generally the dry of this field routine Formula compounding machine, step and condition can routinely be selected by this field.The dry type composite joint is preferably in the steps below It carries out: polyurethane adhesive is applied on the crystalline p p sheet, after oven drying, then pass through dry-lamination process and institute State aluminium foil fitting.Wherein, the operation of the drying and condition can be the conventional operation and condition of this field.

In the step of structure two (3), equipment used by the dry type composite joint is generally the dry of this field routine Formula compounding machine, step and condition can routinely be selected by this field.The dry type composite joint is preferably in the steps below It carries out: polyurethane adhesive being applied on the cast polypropylene film, after oven drying, then passes through dry-lamination process It is bonded with the aluminium foil；Or polyurethane adhesive is applied on the aluminium foil, it is compound after oven drying, then through dry type Technique is bonded with the cast polypropylene film.Wherein, the operation of the drying and condition can be the conventional behaviour of this field Work and condition.

In the step of three~structure of structure six (1), the bidirectional stretching polypropylene film or first cast polypropylene Film prints in preferably first carrying out when with the crystalline p p sheet composite joint.Wherein, the inner print refers to reverted image figure Ink, is transferred to the inside of transparent printable fabric by the printing plate of text, thus the printing of the front performance erect image picture and text in stock Method.Equipment used by the inner print is generally the plastics notch board machine of this field routine, and step and condition can be by this fields Routine is selected, and generally prints different pattern or font according to actual needs.

According to common sense in the field, if the structure three, the structure four, the structure five or the structure six plastic-aluminum without When bacterium bag package material is used to prepare the packing box of beverage, then need to be beaten on the plastic composite coiled material in step (1) Hole, so that intubation is used.If the plastic-aluminum aseptic packaging material of the structure three, the structure four, the structure five or the structure six When material is used to prepare the packing box of can, then need to carry out impression dotted line on the plastic composite coiled material in step (1), with Just tearing notch opens a tin food.

Equipment used by the impression dotted line is generally the roll-to-roll indentation equipment of this field routine, step and item Part can routinely be selected by this field.The impression dotted line refers to the impression of this mouthful on the packing box top of liquid or solid-state food Dotted line.The position of the tearing notch dotted line is that this field is conventional, preferably: apart from 12.5~13.5mm at the top of packing box, distance 2.5~3.5mm of sealing wire；More preferably are as follows: apart from 13mm at the top of packing box, apart from sealing wire 3mm.

In the step of three~structure of structure six (1), it is general that the extrusion curtain coating compound thermal closes equipment used by connection It can routinely be selected by this field for the series connection curtain coating extruder and pressure roll, step and condition of this field routine.It is described It squeezes out curtain coating compound thermal and closes connection and preferably carry out in the steps below: by propylene and ethylene polymer resin through screw rod melting extrusion, Under pressure roll effect, by bidirectional stretching polypropylene film or the first cast polypropylene film, compound thermal is cast with crystalline p p sheet Close connection.

Structure four and the step of structure six in (4), equipment used by the dry type composite joint is generally this field Conventional dry compound machine, step and condition can routinely be selected by this field.The dry type composite joint is preferably pressed Following step carries out: polyurethane adhesive being applied on second cast polypropylene film, after oven drying, then is passed through Dry-lamination process is bonded with the aluminium foil；Or polyurethane adhesive is applied on the aluminium foil, after oven drying, then It is bonded by dry-lamination process with second cast polypropylene film.Wherein, the operation of the drying and condition can be The conventional operation and condition of this field.

Structure five and the step of structure six in (3), equipment used by the dry type composite joint is generally this field Conventional dry compound machine, step and condition can routinely be selected by this field.The dry type composite joint is preferably pressed Following step carries out: polyurethane adhesive is applied on the crystalline p p sheet, it is compound after oven drying, then through dry type Technique is bonded with the aluminium foil.Wherein, the operation of the drying and condition can be the conventional operation and condition of this field.

The present invention also provides a kind of aluminum plastic aseptic package materials to prepare the application in packing box.

The present invention also provides a kind of preparation method of plastic-aluminum aseptic packaging box, the aluminium of the plastic-aluminum aseptic packaging box use Modeling aseptic packaging material is the structure one, the structure two, the structure three, the structure four, the structure five or described Structure six；

When the aluminum plastic aseptic package material is the structure one or the structure two, the plastic-aluminum aseptic packaging box Preparation method includes the following steps:

By the aluminum plastic aseptic package material by punching or impression dotted line treated the structure one or the structure two, Successively to get the structure one or the aluminum plastic aseptic package material system of the structure two after impression, slice, folding box, middle seam welding The plastic-aluminum aseptic packaging box obtained；

When the aluminum plastic aseptic package material is the structure three, the structure four, the structure five or the structure six When, the preparation method of the plastic-aluminum aseptic packaging box includes the following steps:

It will be by punching or impression dotted line treated the structure three, the structure four, the structure five or the knot The aluminum plastic aseptic package material of structure six, successively to get the structure three, the structure after impression, slice, folding box, middle seam welding Four, plastic-aluminum aseptic packaging box made from the aluminum plastic aseptic package material of the structure five or the structure six.

The aluminum plastic aseptic package material of the structure one or the structure two prepares the method and step of plastic-aluminum aseptic packaging box (3) in and the aluminum plastic aseptic package material preparation of the structure three, the structure four, the structure five or the structure six In the method and step (3) of the plastic-aluminum aseptic packaging box, equipment used by the operation of the impression and the operation of the slice The generally rotary marking press or paperboard marking press of this field routine, step and condition can routinely be selected by this field It selects.

The aluminum plastic aseptic package material of the structure one or the structure two prepares the method and step of plastic-aluminum aseptic packaging box (3) in and the aluminum plastic aseptic package material preparation of the structure three, the structure four, the structure five or the structure six In the method for the plastic-aluminum aseptic packaging box rapid (3), the operation of the folding box and condition can operation for this field routine and items Part.

The aluminum plastic aseptic package material of the structure one or the structure two prepares the method and step of plastic-aluminum aseptic packaging box (3) in and the aluminum plastic aseptic package material preparation of the structure three, the structure four, the structure five or the structure six The operation of middle seam welding described in the method and step (3) of the plastic-aluminum aseptic packaging box and condition can be the operation of this field routine And condition.

The present invention also provides one kind plastic-aluminum aseptic packaging box as made from above-mentioned preparation method.

In the present invention, the capacity of the plastic-aluminum aseptic packaging box is generally 100mL~1500mL.

In the present invention, if not illustrating, the mechanical equipment employed in production technology is that the routine of this field is set Standby, operating procedure and condition can be selected according to the routine of this field.

Without prejudice to the field on the basis of common sense, above-mentioned each optimum condition, can any combination to get the present invention it is each preferably Example.

Raw material of the present invention is commercially available.

The positive effect of the present invention is that:

Plastic-aluminum aseptic packaging box of the invention can not only carry out steam sterilization, can also carry out high temperature boiling or spray sterilization (121 DEG C of boilings of high temperature resistant)；Temperature is uniform, sterilization process without dead angle, more thoroughly, it is ensured that the safety of product 100%, to make Food can long term storage；Heat transfer rate is fast in sterilization process, sterilizing time it is short (in sterilization process, heating, heat preservation and temperature fall time Can be only 50~75min), packing box is also less prone to water penetration；Its inner wall can be without adding plasticiser, heavy metal free element, more Safety, health, environmental protection, transportation cost are lower；The printing of its appearance is beautiful, beautiful, and desire to purchase can be improved；Its is easy to use；Its It is sealed, there is low oxygen flow design science, the oxidation of food in box can be effectively prevent, be convenient for food long term storage, do not attaching In the case where adding agent and preservative, beverage or solid-state food can be made to be stored at room temperature 24 months；It is open or tearing notch is more convenient, at This is cheap, the appearance is beautiful and elegant.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the aluminum plastic aseptic package material of embodiment 1, wherein 11 is polypropylene film, 12 is poly- Polypropylene sheet, 13 be the first propylene and ethylene polymer resin layer, 14 be the first ethylene acrylic acid co polymer layer, 15 be aluminium foil, 16 be Second ethylene acrylic acid co polymer layer, 17 are cast polypropylene film for the second propylene and ethylene polymer resin layer and 18.

Fig. 2 is individual box semi-finished product for being formed after impression, slice in the preparation process of 1 plastic-aluminum aseptic packaging box of embodiment Schematic diagram, wherein 21~24 be indentation line, 25 be tearing notch dotted line.

Fig. 3 is the structural schematic diagram of the aluminum plastic aseptic package material of embodiment 2, wherein 31 is polypropylene film, 32 is poly- Polypropylene sheet, 33 for the first polyurethane adhesive layer, 34 be aluminium foil, 35 be the second polyurethane adhesive layer and 36 be curtain coating poly- third Alkene film.

Fig. 4 is the structural schematic diagram of the aluminum plastic aseptic package material of embodiment 3, wherein 41 is polypropylene film, 42 is the One cast polypropylene film (CPP), 43 be third propylene and ethylene polymer resin layer, 44 be crystalline p p sheet, 45 be the first propylene Vinyl polymerization resin layer, 46 be the first ethylene acrylic acid co polymer layer, 47 be aluminium foil, 48 be the second ethylene acrylic acid co polymer Layer, 49 are the second cast polypropylene film for the second propylene and ethylene polymer resin layer and 410.

Fig. 5 is the structural schematic diagram of the aluminum plastic aseptic package material of embodiment 4, wherein 51 be polypropylene film, 52 is pair To stretched polypropene film, 53 be the first propylene and ethylene polymer resin layer, 54 be crystalline p p sheet, 55 be that the second propylene and ethylene is poly- Resin layer, 56 be ethylene acrylic acid co polymer layer, 57 be aluminium foil, 58 be polyurethane adhesive layer and 59 be the second curtain coating poly- third Alkene film.

Fig. 6 is the structural schematic diagram of the aluminum plastic aseptic package material of embodiment 5, wherein 61 is polypropylene film, 62 is the One cast polypropylene film, 63 be the first propylene and ethylene polymer resin layer, 64 be crystalline p p sheet, 65 be polyurethane binder Layer, 66 be aluminium foil, 67 be ethylene acrylic acid co polymer layer, 68 be the second propylene and ethylene polymer resin layer and 69 be the second curtain coating gather Polypropylene film.

Fig. 7 is the structural schematic diagram of the aluminum plastic aseptic package material of embodiment 6, wherein 71 is polypropylene film, 72 is the One cast polypropylene film, 73 be propylene and ethylene polymer resin layer, 74 be crystalline p p sheet, 75 be first polyurethane binder Layer, 76 be aluminium foil, 77 be the second polyurethane adhesive layer and 78 be the second cast polypropylene film.

Specific embodiment

The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to the reality It applies among a range.In the following examples, the experimental methods for specific conditions are not specified, according to conventional methods and conditions, or according to quotient The selection of product specification.

Machine used in the following example packaging material and packing box preparation process is commercially available, can pass through quotient The mode of industry purchase obtains.

Embodiment 1

1, the aluminum plastic aseptic package material of structure one:

Wherein, polypropylene film with a thickness of 10 μm.Crystalline p p sheet is three-layer co-extruded curtain coating hyaline membrane, with a thickness of 240μm.The raw material components of first propylene and ethylene polymer resin layer or the second propylene and ethylene polymer resin layer are by polypropylene and poly- second Alkene composition；In first propylene and ethylene polymer resin layer or the second propylene and ethylene polymer resin layer, polyacrylic content is 65%, is gathered The content of ethylene is 35%, and above-mentioned percentage is mass percent of each component relative to ethylene propylene polymerization resin；The one the third Alkene vinyl polymerization resin layer or the second propylene and ethylene polymer resin layer with a thickness of 10nm.First ethylene acrylic acid co polymer layer or The material ethylene acrylic acid co polymer of second ethylene acrylic acid co polymer layer；First ethylene acrylic acid co polymer layer or the second ethylene Acrylic acid co-polymer layer with a thickness of 15nm.Aluminium foil with a thickness of 6.35 μm.Cast polypropylene film with a thickness of 70 μm.

2, the preparation of the aluminum plastic aseptic package material of structure one:

(2) through coextrusion processes, one first is sequentially formed in the other side of step (1) crystalline p p sheet and the centre of aluminium foil Propylene and ethylene polymer resin layer and one first ethylene acrylic acid co polymer layer；Wherein, the first propylene and ethylene polymer resin layer and poly- Polypropylene sheet is connected, and the first ethylene acrylic acid co polymer layer is connected with aluminium foil；

(3) through coextrusion processes, one is sequentially formed in the other side of step (2) aluminium foil and the centre of cast polypropylene film Second ethylene acrylic acid co polymer layer and one second propylene and ethylene polymer resin layer；Wherein, the second propylene and ethylene polymer resin layer It is connected with cast polypropylene film, the second ethylene acrylic acid co polymer layer is connected with aluminium foil.

In step (1), crystalline p p sheet first carries out surface using flexible printing machine before carrying out curtain coating extrusion composite technology Printing, can print different pattern or font according to actual needs.

The aluminum plastic aseptic package material of the present embodiment is the packing box for being used to prepare can, then needs in step (1) poly- Impression is carried out on polypropylene sheet and forms tearing notch dotted line, so that tearing notch opens a tin food.Crystalline p p sheet is on flexible printing machine When carrying out surface printing, it is completed at the same time the operation of impression dotted line；It is flexographic printing that impression, which forms equipment used by tearing notch dotted line, The online rotary impression unit of machine；Tearing notch dotted line arrives tearing notch at the top of plastic-aluminum aseptic packaging box at the top of plastic-aluminum aseptic packaging box The distance of dotted line is 13mm, is 3mm away from sealing wire.

In step (1), be cast extrusion composite technology the step of and condition routinely selected by this field；

In step (2) and step (3), the series connection of equipment used by coextrusion processes curtain coating extruder and pressure roll, step Rapid and condition is routinely selected by this field.

3, the aluminum plastic aseptic package material of structure one prepares plastic-aluminum aseptic packaging box:

By crystalline p p sheet by impression dotted line treated aluminum plastic aseptic package material (i.e. 2 gained of above-mentioned steps), root According to the actual demand of tin can, impression and sectioning are carried out using rotary marking press or paperboard marking press, indentation line is away from side The distance on boundary and the size of slice are selected (referring to fig. 2) according to packing box actual size；

By the good aluminum plastic aseptic package material of impression as on box folding machine, according to this field routine operation, to indentation line 21, Indentation line 23 carries out 135 ° and pre-folds, flattens, then to indentation line 22,24, rolls over box molding, to wherein seam high temperature heat welding to get Plastic-aluminum aseptic packaging box made from the aluminum plastic aseptic package material of structure one.

Embodiment 2

1, the aluminum plastic aseptic package material of structure two:

Wherein, polypropylene film with a thickness of 15 μm.Crystalline p p sheet is the white milk tunica albuginea of three-layer co-extruded curtain coating, thickness It is 550 μm.The material of first polyurethane adhesive layer or the second polyurethane adhesive layer is polyurethane binder；First polyurethane Adhesive phase or the second polyurethane adhesive layer with a thickness of 1 μm.Aluminium foil with a thickness of 6.5 μm.The thickness of cast polypropylene film Degree is 30 μm.

2, the preparation of the aluminum plastic aseptic package material of structure two:

(2) other side of step (1) crystalline p p sheet, the side with aluminium foil is through dry type composite joint, in crystalline p p sheet Intermediate with aluminium foil forms one first polyurethane adhesive layer；

(3) other side of step (2) aluminium foil, the side with cast polypropylene film are poly- in curtain coating through dry type composite joint Polypropylene film and the intermediate of aluminium foil form one second polyurethane adhesive layer；

In step (1), crystalline p p sheet first carries out surface using flexible printing machine before carrying out curtain coating extrusion composite technology Printing, can print different pattern or font according to actual needs；The plastic-aluminum aseptic packaging box of the present embodiment is the packaging of beverage Box then needs to be punched on crystalline p p sheet in step (1), so that intubation is used；

In step (2) and step (3), equipment used by dry type composite joint is dry compound machine.

In step (2), dry type composite joint carries out in the steps below: polyurethane adhesive is applied to crystalline p p sheet On, it is bonded after oven drying, then through dry-lamination process with aluminium foil.

In step (3), dry type composite joint carries out in the steps below: it is thin that polyurethane adhesive is applied to cast polypropylene On film, it is bonded after oven drying, then through dry-lamination process with aluminium foil.

3, the aluminum plastic aseptic package material of structure two prepares plastic-aluminum aseptic packaging box:

By crystalline p p sheet by punching treated aluminum plastic aseptic package material (i.e. 2 gained of above-mentioned steps) impression, cut Plastic-aluminum aseptic packaging box made from the aluminum plastic aseptic package material of piece, folding box, middle seam welding to get structure two；

Wherein, impression, slice, folding box, middle seam welding use equipment and operation such as embodiment 1.

Embodiment 3

1, the aluminum plastic aseptic package material of structure three:

Wherein, polypropylene film with a thickness of 10 μm.First cast polypropylene film is that prolong co-extrusion polypropylene thin for three laminar flows Film, wherein interbed is homopolypropylene material, and two boundary layers are ternary polymerized polypropylene, with a thickness of 70nm.Third propylene and ethylene Polymer resin layer with a thickness of 10nm.Crystalline p p sheet is the white milk tunica albuginea of three-layer co-extruded curtain coating, with a thickness of 280 μm.First The raw material components of propylene and ethylene polymer resin layer, the second propylene and ethylene polymer resin layer or third propylene and ethylene polymer resin layer by Polypropylene and polyethylene composition；It is polyacrylic in first propylene and ethylene polymer resin layer or the second propylene and ethylene polymer resin layer Content is 80%, and the content of polyethylene is 20%, and above-mentioned percentage is quality of each component relative to ethylene propylene polymerization resin Percentage；First propylene and ethylene polymer resin layer or the second propylene and ethylene polymer resin layer with a thickness of 15nm.First ethylene propylene The material of olefin(e) acid copolymer layer or the second ethylene acrylic acid co polymer layer is ethylene acrylic acid co polymer；First ethylene acrylic is total Polymers layer or the second ethylene acrylic acid co polymer layer with a thickness of 10nm.Aluminium foil with a thickness of 6.35 μm.Second cast polypropylene Film with a thickness of 70 μm.

2, the preparation of the aluminum plastic aseptic package material of structure three:

(1) in the side of the first cast polypropylene film, curtain coating compound thermal is squeezed out with the side of crystalline p p sheet and closes company It connects, forms a third propylene and ethylene polymer resin layer in the first cast polypropylene film and the intermediate of crystalline p p sheet, modeling is made Expect roll of composite material；

The plastic-aluminum aseptic packaging box of the present embodiment is the packing box of beverage, need to be beaten on plastic composite coiled material Hole, so that intubation is used；

(2) other side of bidirectional stretching polypropylene film or the first cast polypropylene film squeezes out compound work by curtain coating Skill forms a polypropylene film,

(3) through coextrusion processes, one first propylene second is sequentially formed in the other side of crystalline p p sheet and the centre of aluminium foil Alkene polymer resin layer and the first ethylene acrylic acid co polymer layer；Wherein, the first propylene and ethylene polymer resin layer and crystalline p p sheet It is connected, the first ethylene acrylic acid co polymer layer is connected with aluminium foil；

(4) through coextrusion processes, in the other side of step (3) aluminium foil and the centre successively shape of the second cast polypropylene film At one second ethylene acrylic acid co polymer layer and the second propylene and ethylene polymer resin layer；Wherein, the second propylene and ethylene polymer resin Layer is connected with the second cast polypropylene film, and the second ethylene acrylic acid co polymer layer is connected with aluminium foil；

In step (1), the first cast polypropylene film is before carrying out squeezing out curtain coating compound thermal conjunction Joining Technology, in first carrying out Print；In print used by equipment be plastics notch board machine, different pattern or font can be printed according to actual needs；

In step (1), squeezing out curtain coating compound thermal and closing equipment used by connection is series connection curtain coating extruder and pressure roll；It squeezes It is cast compound heat seal connection out to carry out in the steps below: by propylene and ethylene polymer resin through screw rod melting extrusion, making in pressure roll Under, the first cast polypropylene film is cast compound heat seal with crystalline p p sheet and is connect；

In step (3) and step (4), equipment used by coextrusion processes is series connection curtain coating extruder and pressure roll.

3, the aluminum plastic aseptic package material of structure three prepares plastic-aluminum aseptic packaging box:

By plastic composite coiled material by punching treated aluminum plastic aseptic package material (i.e. 2 gained of above-mentioned steps) pressure Plastic-aluminum aseptic packaging box made from the aluminum plastic aseptic package material of trace, slice, folding box, middle seam welding to get structure three；

Embodiment 4

1, the aluminum plastic aseptic package material of structure four:

The thickness of the polypropylene film of the present embodiment, the material of crystalline p p sheet and thickness, aluminium foil thickness with implementation Example 1 is identical.Bidirectional stretching polypropylene film is with a thickness of 25nm.First propylene and ethylene polymer resin layer or the polymerization of the second propylene and ethylene The raw material components and thickness of resin layer are same as Example 1.Ethylene acrylic acid co polymer layer with a thickness of 10nm.Ethylene acrylic Copolymer layer with a thickness of 10nm.Polyurethane adhesive layer with a thickness of 1 μm.Second cast polypropylene film with a thickness of 30 μ m。

2, the preparation of the aluminum plastic aseptic package material of structure four:

(1) in the side of bidirectional stretching polypropylene film, curtain coating compound thermal is squeezed out with the side of crystalline p p sheet and closes company It connects, forms one first propylene and ethylene polymer resin layer in bidirectional stretching polypropylene film and the intermediate of crystalline p p sheet, modeling is made Expect roll of composite material；

The plastic-aluminum aseptic packaging box of the present embodiment is the packing box of can, then needs to carry out on plastic composite coiled material Impression is at tearing notch dotted line, so that tearing notch opens a tin food；It is roll-to-roll impression that impression, which forms equipment used by tearing notch dotted line, Equipment, operation and condition are that this field is conventional；

(2) other side of bidirectional stretching polypropylene film forms a polypropylene film by curtain coating extrusion composite technology；

(3) through coextrusion processes, one second propylene second is sequentially formed in the other side of crystalline p p sheet and the centre of aluminium foil Alkene polymer resin layer and an ethylene acrylic acid co polymer layer；Wherein, the second propylene and ethylene polymer resin layer and crystalline p p sheet phase Connection, ethylene acrylic acid co polymer layer are connected with aluminium foil；

(4) other side of step (3) aluminium foil, with the second cast polypropylene film through dry type composite joint, in second Prolong polypropylene film and the intermediate of aluminium foil forms a polyurethane adhesive layer；

In step (1), bidirectional stretching polypropylene film prints in first carrying out before carrying out squeezing out curtain coating compound thermal conjunction connection. In the operation that prints and condition it is same as Example 3.

In step (1), the extrusion curtain coating squeezed out in the step of curtain coating compound thermal closes technique and embodiment 3 of connection (1) is multiple The technique for closing heat seal connection is identical.

In step (2), be cast extrusion composite technology the step of and condition it is same as Example 1.

In step (3), coextrusion processes are identical as the coextrusion processes in (3) the step of embodiment 3.

In step (4), equipment used by dry type composite joint is dry compound machine, and the technique of dry type composite joint is pressed It states step progress: polyurethane adhesive is applied on the second cast polypropylene film, it is multiple after oven drying, then through dry type Technique is closed to be bonded with aluminium foil.

3, the aluminum plastic aseptic package material of structure four prepares plastic-aluminum aseptic packaging box:

By plastic composite coiled material by impression dotted line treated aluminum plastic aseptic package material (i.e. 2 institute of above-mentioned steps ) impression, slice, plastic-aluminum aseptic packaging box made from aluminum plastic aseptic package material to get structure four of folding box, middle seam welding；

Embodiment 5

1, the aluminum plastic aseptic package material of structure five:

The thickness of polypropylene film, the material of crystalline p p sheet and thickness, the first propylene and ethylene polymer resin layer or second Raw material components and thickness, the thickness of aluminium foil of propylene and ethylene polymer resin layer are same as Example 1.First cast polypropylene is thin The material (with a thickness of 30nm) of film, the thickness of the second cast polypropylene film are same as Example 3.Ethylene acrylic acid co polymer Layer with a thickness of 15nm.Polyurethane adhesive layer with a thickness of 2 μm.

2, the preparation of the aluminum plastic aseptic package material of structure five:

(1) in the side of the first cast polypropylene film, curtain coating compound thermal is squeezed out with the side of crystalline p p sheet and closes company It connects, forms one first propylene and ethylene polymer resin layer in the first cast polypropylene film and the intermediate of crystalline p p sheet, modeling is made Expect roll of composite material；

The plastic-aluminum aseptic packaging box of the present embodiment is the packing box of can, then need to be pressed on plastic composite coiled material Trace is at tearing notch dotted line, so that tearing notch opens a tin food；Specific impression is at the operation of tearing notch dotted line and condition and 4 phase of embodiment Together；

(2) other side of (1) first cast polypropylene film of step forms a polypropylene by curtain coating extrusion composite technology Film；

(3) in the other side of crystalline p p sheet, with aluminium foil through dry type composite joint, in the centre of crystalline p p sheet and aluminium foil Form a polyurethane adhesive layer；

(4) it is sequentially formed through coextrusion processes, the other side of step (3) aluminium foil and the centre of the second cast polypropylene film One ethylene acrylic acid co polymer layer and one second propylene and ethylene polymer resin layer；Wherein, the second propylene and ethylene polymer resin layer with Second cast polypropylene film is connected, and ethylene acrylic acid co polymer layer is connected with aluminium foil；

Squeeze out in step (1) curtain coating compound thermal close in the operation and condition, step (4) of connection the operation of coextrusion processes and Condition is same as Example 3.

In step (1), the first cast polypropylene film prints in first carrying out before carrying out squeezing out curtain coating compound thermal conjunction connection. In the operation that prints and condition it is same as Example 3.

In step (3), equipment used by dry type composite joint is dry compound machine, and dry type composite joint is in the steps below It carries out: polyurethane adhesive is applied on crystalline p p sheet, pasted after oven drying, then through dry-lamination process and aluminium foil It closes；Or polyurethane adhesive is applied on aluminium foil, after oven drying, then pass through dry-lamination process and crystalline p p sheet Fitting.

3, the aluminum plastic aseptic package material of structure five prepares plastic-aluminum aseptic packaging box:

By plastic composite coiled material by impression dotted line treated aluminum plastic aseptic package material (i.e. 2 institute of above-mentioned steps ) impression, slice, plastic-aluminum aseptic packaging box made from aluminum plastic aseptic package material to get structure five of folding box, middle seam welding；

Embodiment 6

1, the aluminum plastic aseptic package material of structure six:

The thickness of the thickness of polypropylene film, the material of crystalline p p sheet and thickness, aluminium foil is same as Example 1.The The material and thickness of one cast polypropylene film and the thickness of the second cast polypropylene film are same as Example 3.Ethylene propylene Olefin(e) acid copolymer layer with a thickness of 15nm.First polyurethane adhesive layer, the second polyurethane adhesive layer with a thickness of 2 μm.

2, the preparation of the aluminum plastic aseptic package material of structure six:

(1) in the side of the first cast polypropylene film, curtain coating compound thermal is squeezed out with the side of crystalline p p sheet and closes company It connects, forms a propylene and ethylene polymer resin layer in the first cast polypropylene film and the intermediate of crystalline p p sheet, it is multiple that plastics are made Condensation material coiled material；

(3) in the other side of step (2) crystalline p p sheet, with aluminium foil through dry type composite joint, in crystalline p p sheet and aluminium The intermediate of foil forms one first polyurethane adhesive layer；

(4) in the other side of step (3) aluminium foil, with the second cast polypropylene film through dry type composite joint, in aluminium foil and The intermediate of second cast polypropylene film forms one second polyurethane adhesive layer.

In step (1), the first cast polypropylene film is before carrying out squeezing out curtain coating compound thermal conjunction Joining Technology, in first carrying out Print.In the operation that prints and condition it is same as Example 3.

Operation and the condition that curtain coating compound thermal conjunction connection is squeezed out in step (1) are same as Example 3.

The operation of dry type composite joint and condition are same as Example 4 in step (3) neutralization procedure (4).

3, the aluminum plastic aseptic package material of structure six prepares plastic-aluminum aseptic packaging box:

By plastic composite coiled material by impression dotted line treated aluminum plastic aseptic package material (i.e. 2 institute of above-mentioned steps ) impression, slice, plastic-aluminum aseptic packaging box made from aluminum plastic aseptic package material to get structure six of folding box, middle seam welding；

Effect example 1

Table 1

The product of the embodiment of the present invention 1~6 is compared with the sterilizing time of paper plastic-aluminum aseptic packaging box in the prior art, The results are shown in Table 1, it follows that the sterilizing time of the invention obviously sterilization of paper plastic-aluminum aseptic packaging box than in the prior art Time is few.

The plastic-aluminum aseptic packaging box of the embodiment of the present invention 1~6 can not only carry out steam sterilization, can also carry out high temperature boiling or Spray sterilization (121 DEG C of boilings of high temperature resistant)；Temperature is uniform, sterilization process without dead angle, more thoroughly, it is ensured that product 100% pacify Entirely, to make food can long term storage；Heat transfer rate is fast in sterilization process, and sterilizing time is short, and (in sterilization process, heating is kept the temperature Can be only 50~75min with temperature fall time), packing box is also less prone to water penetration；Its inner wall can be without adding plasticiser, heavy metal free Element, safer, hygienic, environmentally friendly, transportation cost is lower；The printing of its appearance is beautiful, beautiful, and desire to purchase can be improved；It makes With conveniently；It is sealed, and has low oxygen flow design science, can effectively prevent the oxidation of food in box, is convenient for food long term storage, In the case where not doping and preservative, beverage or solid-state food can be made to be stored at room temperature 24 months；Its opening or tearing notch are more Add conveniently, it is low in cost, the appearance is beautiful and elegant.

Claims

1. a kind of aluminum plastic aseptic package material, which is characterized in that it is structure one, structure three, structure four, structure five or structure Six；

The structure one successively includes: polypropylene film, crystalline p p sheet, the first propylene and ethylene polymer resin layer, the first ethylene Acrylic acid co-polymer layer, aluminium foil, the second ethylene acrylic acid co polymer layer, the second propylene and ethylene polymer resin layer and cast polypropylene Film；

The structure three successively includes: polypropylene film, bidirectional stretching polypropylene film or the first cast polypropylene film, third Propylene and ethylene polymer resin layer, crystalline p p sheet, the first propylene and ethylene polymer resin layer, the first ethylene acrylic acid co polymer layer, Aluminium foil, the second ethylene acrylic acid co polymer layer, the second propylene and ethylene polymer resin layer and the second cast polypropylene film；

The structure four successively includes: polypropylene film, bidirectional stretching polypropylene film or the first cast polypropylene film, first Propylene and ethylene polymer resin layer, crystalline p p sheet, the second propylene and ethylene polymer resin layer, ethylene acrylic acid co polymer layer, aluminium foil, Polyurethane adhesive layer and the second cast polypropylene film；

The structure five successively includes: polypropylene film, bidirectional stretching polypropylene film or the first cast polypropylene film, first Propylene and ethylene polymer resin layer, crystalline p p sheet, polyurethane adhesive layer, aluminium foil, ethylene acrylic acid co polymer layer, the second propylene Vinyl polymerization resin layer and the second cast polypropylene film；

The structure six successively includes: polypropylene film, bidirectional stretching polypropylene film or the first cast polypropylene film, propylene Vinyl polymerization resin layer, crystalline p p sheet, the first polyurethane adhesive layer, aluminium foil, the second polyurethane adhesive layer and second Prolong polypropylene film.

2. aluminum plastic aseptic package material as described in claim 1, which is characterized in that structure one, three~structure of structure six form The thickness of aluminum plastic aseptic package material independently be 280~600 μm；

In structure one, three~structure of structure six, the thickness of the polypropylene film independently is 10~15 μm；

In structure one, three~structure of structure six, the thickness of the crystalline p p sheet independently is 240~500 μm；

First propylene and ethylene polymer resin layer described in structure one, three~structure of structure five or second propylene and ethylene polymerization tree Rouge layer, the raw material of propylene and ethylene polymer resin layer described in third propylene and ethylene polymer resin layer described in structure three and structure six Component is made of polypropylene and polyethylene；

First propylene and ethylene polymer resin layer described in structure one, three~structure of structure five or second propylene and ethylene polymerization tree The thickness of propylene and ethylene polymer resin layer described in third propylene and ethylene polymer resin layer described in rouge layer, structure three and structure six It independently is 10~15nm.

3. aluminum plastic aseptic package material as claimed in claim 2, which is characterized in that in structure one, three~structure of structure six, institute The thickness for stating crystalline p p sheet independently is 280 μm.

4. aluminum plastic aseptic package material as claimed in claim 2, which is characterized in that institute in structure one, three~structure of structure five State the first propylene and ethylene polymer resin layer or the second propylene and ethylene polymer resin layer, third propylene and ethylene described in structure three The raw material components of propylene and ethylene polymer resin layer described in polymer resin layer and structure six are made of polypropylene and polyethylene, are gathered The content of propylene independently is 65~80%, and the content of the polyethylene independently is 20~35%, and above-mentioned percentage is each group Mass percent of the split-phase for ethylene propylene polymerization resin.

5. aluminum plastic aseptic package material as claimed in claim 2, which is characterized in that the first second described in structure one and structure three Ethylene acrylic described in alkene acrylic acid co-polymer layer or the second ethylene acrylic acid co polymer layer, structure four and structure five is total The thickness of polymers layer independently is 10~15nm；

In structure one, three~structure of structure six, the thickness of the aluminium foil independently is 6.35~6.5 μm；

In structure one, the thickness of the cast polypropylene film independently is 30~70 μm；

Institute in first polyurethane adhesive layer described in structure six or second polyurethane adhesive layer, structure four and structure five The thickness for stating polyurethane adhesive layer independently is 1~2 μm；

In three~structure of structure six, the thickness of the bidirectional stretching polypropylene film independently is 15~25nm；

In three~structure of structure six, the thickness of first cast polypropylene film independently is 30~70nm；

In three~structure of structure six, the thickness of second cast polypropylene film independently is 30~70 μm.

6. a kind of preparation method of aluminum plastic aseptic package material as claimed in any one of claims 1 to 5, which is characterized in that institute Stating aluminum plastic aseptic package material is the structure one, the structure three, the structure four, the structure five or the structure six:

(1) one polypropylene film is formed by curtain coating extrusion composite technology in the side of crystalline p p sheet, plastic composite is made Material volume material；

(2) through coextrusion processes, the polymerization of one first propylene and ethylene is sequentially formed in the other side of step (1) described crystalline p p sheet Resin layer and one first ethylene acrylic acid co polymer layer；Wherein, the first propylene and ethylene polymer resin layer and the polypropylene Sheet material is connected, and the first ethylene acrylic acid co polymer layer is connected with aluminium foil；

(3) through coextrusion processes, one second ethylene acrylic acid co polymer layer is sequentially formed in the other side of step (2) described aluminium foil With one second propylene and ethylene polymer resin layer；Wherein, the second propylene and ethylene polymer resin layer and cast polypropylene film phase Connection, the second ethylene acrylic acid co polymer layer are connected with the aluminium foil；

(1) in the side of bidirectional stretching polypropylene film or the first cast polypropylene film, the side with crystalline p p sheet is through squeezing It is cast compound heat seal connection out, in " bidirectional stretching polypropylene film or first cast polypropylene film " and the polypropylene The intermediate of sheet material forms a third propylene and ethylene polymer resin layer, and plastic composite coiled material is made；

(2) other side of step (1) bidirectional stretching polypropylene film or first cast polypropylene film, passes through curtain coating Extrusion composite technology forms a polypropylene film；

(3) through coextrusion processes, one first propylene and ethylene polymer resin layer is sequentially formed in the other side of the crystalline p p sheet With the first ethylene acrylic acid co polymer layer；Wherein, the first propylene and ethylene polymer resin layer is connected with the crystalline p p sheet It connects, the first ethylene acrylic acid co polymer layer is connected with aluminium foil；

(4) through coextrusion processes, one second ethylene acrylic acid co polymer layer is sequentially formed in the other side of step (3) described aluminium foil With the second propylene and ethylene polymer resin layer；Wherein, the second propylene and ethylene polymer resin layer and the second cast polypropylene film It is connected, the second ethylene acrylic acid co polymer layer is connected with the aluminium foil；

(1) side of bidirectional stretching polypropylene film or the first cast polypropylene film, the side with crystalline p p sheet is through squeezing out It is cast compound heat seal connection, in " bidirectional stretching polypropylene film or first cast polypropylene film " and the polypropylene foil The intermediate of material forms one first propylene and ethylene polymer resin layer, and plastic composite coiled material is made；

(2) other side of step (1) bidirectional stretching polypropylene film or the first cast polypropylene film is squeezed out by curtain coating Combination process forms a polypropylene film；

(3) through coextrusion processes, one second propylene and ethylene polymer resin layer is sequentially formed in the other side of the crystalline p p sheet With an ethylene acrylic acid co polymer layer；Wherein, the second propylene and ethylene polymer resin layer is connected with the crystalline p p sheet, The ethylene acrylic acid co polymer layer is connected with aluminium foil；

(4) other side of step (3) described aluminium foil, with the second cast polypropylene film through dry type composite joint, described Two cast polypropylene films and the intermediate of the aluminium foil form a polyurethane adhesive layer；

(2) it in the other side of step (1) bidirectional stretching polypropylene film or the first cast polypropylene film, is squeezed by being cast Combination process forms a polypropylene film out

(3) in the other side of the crystalline p p sheet, with aluminium foil through dry type composite joint, in the crystalline p p sheet and the aluminium The intermediate of foil forms a polyurethane adhesive layer；

(4) through coextrusion processes, the other side of step (3) described aluminium foil sequentially forms an ethylene acrylic acid co polymer layer and one Two propylene vinyl polymerization resin layers；Wherein, the second propylene and ethylene polymer resin layer is connected with the second cast polypropylene film It connects, the ethylene acrylic acid co polymer layer is connected with the aluminium foil；

(1) in the side of bidirectional stretching polypropylene film or the first cast polypropylene film, the side with crystalline p p sheet is through squeezing It is cast compound heat seal connection out, in " bidirectional stretching polypropylene film or first cast polypropylene film " and the polypropylene The intermediate of sheet material forms a propylene and ethylene polymer resin layer, and plastic composite coiled material is made；

(2) in the other side of step (1) bidirectional stretching polypropylene film or first cast polypropylene film, pass through stream Prolong extrusion composite technology and forms a polypropylene film

(3) in the other side of the crystalline p p sheet, with aluminium foil through dry type composite joint, in the crystalline p p sheet and the aluminium The intermediate of foil forms one first polyurethane adhesive layer；

(4) in the other side of step (3) aluminium foil, with the second cast polypropylene film through dry type composite joint, in the aluminium Foil and the intermediate of second cast polypropylene film form one second polyurethane adhesive layer.

7. preparation method as claimed in claim 6, which is characterized in that the step of structure one in (1), the crystalline p p sheet exists Before carrying out curtain coating extrusion composite technology, surface printing is first carried out.

8. preparation method as claimed in claim 7, which is characterized in that the behaviour of the surface printing is taken as flexographic printing Machine is printed；The crystalline p p sheet is completed at the same time punching or impression when carrying out surface printing on the flexible printing machine The operation of dotted line；Equipment used by the impression dotted line is the online rotary impression unit of flexible printing machine.

9. preparation method as claimed in claim 8, which is characterized in that the tearing notch dotted line that the operation through the impression dotted line is formed Position are as follows: at the top of the packing box be 12.5~13.5mm, apart from 2.5~3.5mm of sealing wire.

10. preparation method as claimed in claim 9, which is characterized in that the tearing notch that the operation through the impression dotted line is formed is empty The position of line are as follows: be 13mm at the top of packing box, be 3mm apart from sealing wire.

11. preparation method as claimed in claim 6, which is characterized in that described double the step of three~structure of structure six in (1) To stretched polypropene film or first cast polypropylene film when with the crystalline p p sheet composite joint, in first carrying out Print；

If the structure three, the structure four, the structure five or the structure six aluminum plastic aseptic package material be used to prepare When the packing box of can, then need to carry out impression dotted line on the plastic composite coiled material in step (1)；

In the step of three~structure of structure six (1), the extrusion curtain coating compound thermal closes connection and carries out in the steps below: by propylene second Alkene polymer resin is through screw rod melting extrusion, under pressure roll effect, by bidirectional stretching polypropylene film or the first cast polypropylene Film is cast compound heat seal with crystalline p p sheet and connect；

Structure four and the step of structure six in (4), the dry type composite joint carries out in the steps below: polyurethane adhesive is applied On cloth to second cast polypropylene film, it is bonded after oven drying, then through dry-lamination process with the aluminium foil；Or Polyurethane adhesive is applied on the aluminium foil by person, after oven drying, then passes through dry-lamination process and the second Prolong polypropylene film fitting；

Structure five and the step of structure six in (3), the dry type composite joint carries out in the steps below: polyurethane adhesive is applied On cloth to the crystalline p p sheet, it is bonded after oven drying, then through dry-lamination process with the aluminium foil.

12. preparation method as claimed in claim 11, which is characterized in that equipment used by the inner print is plastics notch board Machine.

13. preparation method as claimed in claim 11, which is characterized in that equipment used by the impression dotted line is volume pair Roll up indentation equipment.

14. preparation method as claimed in claim 11, which is characterized in that the tearing notch that the operation through the impression dotted line is formed is empty The position of line are as follows: apart from 12.5~13.5mm at the top of packing box, apart from 2.5~3.5mm of sealing wire.

15. preparation method as claimed in claim 14, which is characterized in that the tearing notch that the operation through the impression dotted line is formed is empty The position of line are as follows: apart from 13mm at the top of packing box, apart from sealing wire 3mm.

16. a kind of aluminum plastic aseptic package material as described in any one of Claims 1 to 5 is in the application prepared in packing box.

17. a kind of preparation method of plastic-aluminum aseptic packaging box, which is characterized in that the plastic-aluminum that the plastic-aluminum aseptic packaging box uses without Bacterium bag package material is the described in any item structures one of Claims 1 to 5, the structure three, the structure four, the knot Structure five or the structure six；

When the aluminum plastic aseptic package material is described structure a period of time, the preparation method of the plastic-aluminum aseptic packaging box includes following Step:

By the aluminum plastic aseptic package material by punching or impression dotted line treated the structure one, successively impression, slice, folding Plastic-aluminum aseptic packaging box made from aluminum plastic aseptic package material after box, middle seam welding to get the structure one；

When the aluminum plastic aseptic package material is the structure three, the structure four, the structure five or the structure six, institute The preparation method for stating plastic-aluminum aseptic packaging box includes the following steps:

It will be by punching or impression dotted line treated the structure three, the structure four, the structure five or the structure six Aluminum plastic aseptic package material, successively impression, slice, folding box, after middle seam welding to get the structure three, the structure four, institute State plastic-aluminum aseptic packaging box made from the aluminum plastic aseptic package material of structure five or the structure six.

18. preparation method as claimed in claim 17, which is characterized in that prepared by the aluminum plastic aseptic package material of the structure one In the method for plastic-aluminum aseptic packaging box and the plastic-aluminum of the structure three, the structure four, the structure five or the structure six Aseptic packaging material is prepared in the method for the plastic-aluminum aseptic packaging box, used by the operation of impression and the operation of the slice Equipment is rotary marking press or paperboard marking press.

19. plastic-aluminum aseptic packaging box made from a kind of preparation method as described in claim 17 or 18.