CN109367157A - Height extends packaging film, its production method and outer packing - Google Patents

Height extends packaging film, its production method and outer packing Download PDF

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Publication number
CN109367157A
CN109367157A CN201811357194.5A CN201811357194A CN109367157A CN 109367157 A CN109367157 A CN 109367157A CN 201811357194 A CN201811357194 A CN 201811357194A CN 109367157 A CN109367157 A CN 109367157A
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CN
China
Prior art keywords
layer
film
upper epidermis
packaging film
membrane body
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Pending
Application number
CN201811357194.5A
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Chinese (zh)
Inventor
张逢辉
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LD PACKAGING Co Ltd
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LD PACKAGING Co Ltd
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Priority to CN201811357194.5A priority Critical patent/CN109367157A/en
Publication of CN109367157A publication Critical patent/CN109367157A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal 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
    • B32B15/085—Layered products comprising a layer of metal comprising metal 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 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • 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
    • 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
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)

Abstract

The present invention provides high extension packaging film, including membrane body, membrane body include upper epidermis, middle layer and hot sealing layer, and upper epidermis, middle layer and hot sealing layer successively stack bonding from top to bottom；Middle layer with a thickness of 1-30 μm；Middle layer is made of aluminium alloy；The present invention also provides produce the above-mentioned high production method for extending packaging film and a kind of outer packing using above-mentioned high extension packaging film.High extension packaging film of the invention, has good ductility, is not in micropore stretching extension rear surface；Production method of the invention can make middle layer and the bonding of upper epidermis, hot sealing layer closer, and then improve the adhesive strength after upper epidermis, hot sealing layer and interlayer adhesion；Outer packing of the invention can effectively completely cut off the entrance of extraneous gas and liquid, and then it is rotten to avoid the packing material in outer packing from occurring.

Description

Height extends packaging film, its production method and outer packing
Technical field
The present invention relates to packaging material fields, refer in particular to high extension packaging film, its production method and outer packing.
Background technique
Existing prepackaged food generally uses viscous by the multilayer of base of polyester film, nylon film and polyethylene film The outer packing of film is closed to be packed, and in order to extend the storage life of food, prepackaged food manufacturer can infuse in outer packing Enter inert protective gas, to reduce the content of oxygen in outer packing, inhibits the growth of bacterium on food, but above-mentioned MULTILAYER COMPOSITE The ductility of the outer packing of film is poor, and tensile resistance is smaller, after this kind of outer packing is stretched during the packaging process, surface meeting There is micropore, causes outer packing that can not completely cut off the entrance of extraneous gas and liquid, also not can avoid the protective gas in outer packing Outflow, over time, for the food in outer packing because of factors such as oxidation, microbial contamination, the moisture absorption, mildews, becoming can not Edible, therefore, the outer packing for how providing a kind of multilayer complex films good with ductility becomes prepackaged food manufacturer The technical issues of urgent need to resolve.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of high extension packaging films, have good prolong Malleability is not in micropore stretching extension rear surface.
In order to achieve the above object, the invention adopts the following technical scheme: high extend packaging film, including membrane body, the film Body includes upper epidermis, middle layer and hot sealing layer, and upper epidermis, middle layer and hot sealing layer successively stack bonding from top to bottom；In described Interbed with a thickness of 1-30 μm；The middle layer is made of aluminium alloy；The elongation percentage of the middle layer is 2-5%.
Compared with prior art, high extension packaging film of the invention, has the advantages that
(1) present invention utilizes aluminium alloy by the way that the middle layer made of aluminium alloy is arranged between upper epidermis and hot sealing layer Good stretch-resistance improves the ductility of membrane body, and avoiding membrane body, surface will appear micropore after the stretch, so that it is guaranteed that film The gas and liquid of two sides can not exchange flowing above and below body；
(2) middle layer of the invention is made of aluminium alloy, and on the one hand middle layer can absorb oxygen and moisture content, to reduce film The oxygen content and water content of body either side can effectively reduce food when using high extension packaging film cladding food materials of the invention Oxygen and moisture content in material local environment, avoid food materials from degenerating, and on the other hand, middle layer can form cause after absorbing oxygen Close protective layer contacts so that extraneous gas and liquid effectively be avoided to pass through the present invention with food materials.
Preferably, the upper epidermis is made of nylon or modification of nylon；The hot sealing layer is by polypropylene or modified polypropene It is made.
The nylon or modified nylon materials of upper epidermis have good extensibility and higher toughness, can provide for middle layer Enough protections, avoid middle layer from being broken after the stretch.
Preferably, overall thickness≤150 μm of the membrane body；The upper epidermis with a thickness of 1-30 μm；The hot sealing layer With a thickness of 50-120 μm；Above-mentioned set-up mode is ensuring the high premise for extending packaging film and having good ductility of the invention Under, it avoids the high overall thickness for extending packaging film of the invention blocked up, causes manufacturing cost to rise, in addition, this setup energy Ensure that of the invention high extend has preferable oil resistivity, organic solvent resistance and wearability on the upside of packaging film, downside convenient for pair Packing box/packaging membrane material is sealed.
Preferably, the middle layer is made of aluminum-iron alloy；Contain ferro element in the middle layer, middle layer can be improved The ability of oxygen and moisture content is absorbed, and then improves the high packaging film that extends to the fresh-keeping effect of food.
It preferably, further include adhesive layer, the adhesive layer is arranged between upper epidermis and middle layer and/or middle layer and heat Between sealing, the adhesive layer is for bonding two adjacent layers；The adhesive layer is made of viscoelastic polyurethane condensation material.
Preferably, the bondline thickness is 0.1-10 μm.
Viscoelastic polyurethane condensation material has more highly polar carbamate groups, and nylon or modified nylon materials belong to polyamides Amine polymer, surface polarity is higher, therefore viscoelastic polyurethane condensation material can interact with the nylon of upper epidermis, to significantly mention The bonding effect of high upper epidermis and middle layer.
It is a further object to provide a kind of above-mentioned high production methods for extending packaging film, including following step It is rapid:
(1) prepare material: including upper epidermis membrane material, intermediate layer coiled material and hot sealing layer membrane material；Upper epidermis membrane material be nylon or Modification of nylon film, the upper epidermis membrane material with a thickness of 1-30 μm；Hot sealing layer membrane material be polypropylene or modified polypropene film, it is described Hot sealing layer membrane material with a thickness of 50-120 μm；Intermediate layer coiled material is aluminium alloy, and middle layer coil thickness is 1-30 μm；
(2) pre-process upper epidermis membrane material: retracting is at upper epidermis coiled material after carrying out sided corona treatment to upper epidermis film outer surface It is spare；
(3) pre-process hot sealing layer membrane material: retracting is at heat-sealing layer coiled material after carrying out sided corona treatment to hot sealing layer film outer surface It is spare；
(4) packaging film semi-finished product are prepared: upper epidermis coiled material and intermediate layer coiled material are respectively placed in the of high speed bonder In one charging axle and the second charging axle；First charging axle and second feeds axial set composite charging；Intermediate layer film is entering Spray treatment or roller coating processing are carried out before set composite, are coated adhesive in intermediate layer film upper surface, are made on intermediate layer film Surface forms adhesive layer；Upper epidermis film and intermediate layer film are bonded into packaging film semi-finished product in set composite；
(5) preparation is high extends packaging film: packaging film semi-finished product and heat-sealing layer coiled material are respectively placed in high speed bonder In first charging axle and the second charging axle；First charging axle and second feeds axial set composite charging；Packaging film semi-finished product exist Into before set composite, spray treatment is carried out with respect to upper epidermis side to middle layer or roller coating is handled, in the relatively upper table of middle layer One side surface of layer coats adhesive, forms middle layer for the bonding with heat-sealing layer film bonding with respect to one side surface of upper epidermis Layer；Packaging film semi-finished product and heat-sealing layer film are bonded into high extension packaging film in set composite.
Compared with prior art, the high production method for extending packaging film of the invention, has the advantages that
(1) by forming adhesive layer in intermediate layer film upper and lower surfaces coated with adhesive, made using adhesive Surface layer film, heat-sealing layer film and intermediate layer film are bonded, and production energy consumption is effectively reduced, and save production cost；
(2) in the material previously treated stage, by carrying out sided corona treatment, table in increase to upper epidermis film and heat-sealing layer film The degree of roughness of layer film and heat-sealing layer film upper and lower surface makes to increase contact area between layers and adhesive force Middle layer and the bonding of upper epidermis, hot sealing layer are even closer, and then improve the bonding after upper epidermis, hot sealing layer and interlayer adhesion Intensity；In addition, and being easy to stay after interlayer adhesion after the degree of roughness of upper epidermis film and heat-sealing layer film upper and lower surface increases There is fine clearance, and adhesive can fill gap, improve the high structural strength for extending packaging film；
(3) in the high production method for extending packaging film of the invention, first upper epidermis film is bonded into intermediate layer film After packaging film semi-finished product, then packaging film semi-finished product are processed, heat-sealing layer film is made to be bonded in middle layer with respect to upper epidermis one Side keeps upper epidermis film and heat-sealing layer film same compared to directly adhesive is coated in intermediate layer film upper and lower surfaces When with intermediate layer film bonding processing method；During intermediate layer film and upper epidermis are film adhered, it can ensure that compound The pressure that device applies is applied directly on intermediate layer film, to keep intermediate layer film film adhered closer with upper epidermis； On the other hand, after intermediate layer film and upper epidermis are film adhered, intermediate layer film is fixed on upper epidermis film, can effectively be avoided When hot sealing layer is bonded in middle layer with respect to upper epidermis side, intermediate layer film stress is stretched, and intermediate layer thickness is caused to become smaller, Make the high service performance decline for extending packaging film.
Preferably, in the step (2), upper epidermis film also passes through printing treatment, is formed in upper epidermis film upper surface Printing layer.
Due to upper surface degree of roughness increase after sided corona treatment of upper epidermis film, convenient for printing the attachment of ink, Make user that can carry out pattern printing by printing treatment in the upper surface of upper epidermis film；In addition, due under heat-sealing layer film Surface degree of roughness after sided corona treatment increases, to improve the adhesiving effect of hot sealing layer and foreign object, and then improves the present invention The high packaging film that extends to the wrapped and leakproofness of foreign object.
It is a further object to provide a kind of using the above-mentioned high outer packing for extending packaging film comprising first Membrane body and the second membrane body, the first membrane body and the second membrane body are above-mentioned high extension packaging film, the heat of the first membrane body and the second membrane body Sealing is oppositely arranged, and the edge of the first membrane body and the second membrane body, which stacks and heats pressing, forms sealing；First membrane body and second Accommodating chamber is enclosed in the middle part of membrane body.
It is a further object to provide a kind of the outer of high extension packaging film produced using aforementioned production method Packaging comprising the first membrane body and the second membrane body, the first membrane body and the second membrane body are above-mentioned high extension packaging film, the first membrane body It is oppositely arranged with the hot sealing layer of the second membrane body, the edge of the first membrane body and the second membrane body, which stacks and heats pressing, forms sealing； Accommodating chamber is enclosed in the middle part of first membrane body and the second membrane body.
Compared with prior art, a kind of outer packing of the invention has good extensibility, is stretching extension rear surface not It will appear micropore, to effectively completely cut off the entrance of extraneous gas and liquid, and then it is rotten to avoid the packing material in outer packing from occurring.
Detailed description of the invention
Fig. 1 is high the first production schematic diagram for extending packaging film；
Fig. 2 is high the second production schematic diagram for extending packaging film；
Fig. 3 is a kind of production schematic diagram of the high improvement project for extending packaging film；
Fig. 4 is the high schematic diagram for extending packaging film；
Fig. 5 is a kind of high extension cross-sectional view of set-up mode of packaging film；
Fig. 6 is the partial enlarged view of the a-quadrant of Fig. 5；
Fig. 7 is the high cross-sectional view for extending packaging film another kind set-up mode；
Fig. 8 is the partial enlarged view of the B area of Fig. 7；
Fig. 9 is the schematic diagram of outer packing.
Label declaration:
1 high extension packaging film, 10 packaging film semi-finished product, 2 hot sealing layers, 20 heat-sealing layer films, 3 middle layers, 30 adhesive layers, 31 Intermediate layer film, 4 upper epidermis, 40 upper epidermis films, 5 outer packings, 50 accommodating chambers, 51 first membrane bodies, 52 second membrane bodies, 53 sealings Portion, 61 first charging axles, 62 second charging axles, 64 set composites.
Specific embodiment
Below in conjunction with Detailed description of the invention embodiments of the present invention:
Embodiment one
Referring to Fig. 1 to Fig. 2, the present embodiment provides the high production methods for extending packaging film 1, comprising the following steps:
(1) prepare material: including upper epidermis membrane material, intermediate layer coiled material and hot sealing layer membrane material；Upper epidermis membrane material be nylon or Modification of nylon film, the upper epidermis membrane material with a thickness of 1-30 μm；Hot sealing layer membrane material be polypropylene or modified polypropene film, it is described Hot sealing layer membrane material with a thickness of 50-120 μm；Intermediate layer coiled material is aluminium alloy, elongation percentage 2-5%, middle layer coil thickness It is 1-30 μm；
(2) it pre-processes upper epidermis membrane material: retracting after 40 outer surface of upper epidermis film progress sided corona treatment is rolled up at upper epidermis Material is spare；
(3) it pre-processes hot sealing layer membrane material: retracting after heat-sealing 20 outer surface of layer film progress sided corona treatment is rolled up at hot sealing layer Material is spare；
(4) packaging film semi-finished product are prepared: upper epidermis coiled material and intermediate layer coiled material are respectively placed in the of high speed bonder In one charging axle 61 and the second charging axle 62；First charging axle 61 and the second charging axle 62 are fed to set composite 64；Middle layer Film 31 carries out spray treatment or roller coating processing before entering set composite 64, coats and bonds in 31 upper surface of intermediate layer film Agent makes 31 upper surface of intermediate layer film form adhesive layer 30；Upper epidermis film 40 and intermediate layer film 31 are in set composite 64 It is bonded into packaging film semi-finished product 10；
(5) preparation is high extends packaging film 1: packaging film semi-finished product 10 and heat-sealing layer coiled material are respectively placed in high speed bonder The first charging axle 61 and the second charging axle 62 on；First charging axle 61 and the second charging axle 62 are fed to set composite 64；Packet Film semi-finished product 10 are filled before entering set composite 64, middle layer 3 is carried out at spray treatment or roller coating with respect to 4 side of upper epidermis Reason coats adhesive with respect to 4 one side surface of upper epidermis in middle layer 3, forms middle layer 3 with respect to 4 one side surface of upper epidermis and use In the adhesive layer 30 bonded with heat-sealing layer film 20；Packaging film semi-finished product 10 and heat-sealing layer film 20 bond in set composite 64 Extend packaging film 1 at height.
Preferably, in the step (2), upper epidermis film 40 also passes through printing treatment, in 40 upper surface of upper epidermis film Form printing layer.
Referring to Fig. 3, a kind of improvement project of printing treatment is carried out as upper epidermis film 40, to the print of upper epidermis film 40 Brush processing may be provided in the step (5), i.e., upper epidermis film 40 carries out printing treatment before entering set composite 64, upper 40 upper surface of surface layer film forms printing layer.
Due to upper surface degree of roughness increase after sided corona treatment of upper epidermis film 40, convenient for the attached of printing ink , make user that can carry out pattern by printing treatment in the upper surface of upper epidermis film 40；In addition, due to heat-sealing layer film 20 Lower surface degree of roughness after sided corona treatment increases, to improve the adhesiving effect of hot sealing layer 2 Yu foreign object, and then improves this hair The bright high packaging film 1 that extends is to the wrapped and leakproofness of foreign object.
Embodiment two
A kind of improvement project of the present embodiment as embodiment, the present embodiment provides the high production method for extending packaging film 1, The following steps are included:
(1) prepare material: including upper epidermis membrane material, intermediate layer coiled material and hot sealing layer membrane material；Upper epidermis membrane material be nylon or Modification of nylon film, the upper epidermis membrane material with a thickness of 1-30 μm；Hot sealing layer membrane material be polypropylene or modified polypropene film, it is described Hot sealing layer membrane material with a thickness of 50-120 μm；Intermediate layer coiled material is aluminium alloy, elongation percentage 2-5%, middle layer coil thickness It is 1-30 μm；
(2) it pre-processes upper epidermis membrane material: retracting after 40 outer surface of upper epidermis film progress sided corona treatment is rolled up at upper epidermis Material is spare；
(3) it pre-processes hot sealing layer membrane material: retracting after heat-sealing 20 outer surface of layer film progress sided corona treatment is rolled up at hot sealing layer Material is spare；
(4) packaging film semi-finished product are prepared: upper epidermis coiled material and intermediate layer coiled material are respectively placed in the of high speed bonder In one charging axle 61 and the second charging axle 62；First charging axle 61 and the second charging axle 62 are fed to set composite 64；Middle layer Film 31 carries out spray treatment or roller coating processing before entering set composite 64, coats and bonds in 31 upper surface of intermediate layer film Agent makes 31 upper surface of intermediate layer film form adhesive layer 30；Upper epidermis film 40 and intermediate layer film 31 are in set composite 64 It is bonded into packaging film semi-finished product 10；
(5) preparation is high extends packaging film 1: packaging film semi-finished product 10 and heat-sealing layer coiled material are respectively placed in high speed bonder The first charging axle 61 and the second charging axle 62 on；First charging axle 61 and the second charging axle 62 are fed to set composite 64；Packet Film semi-finished product 10 are filled before entering set composite 64, middle layer 3 is carried out at spray treatment or roller coating with respect to 4 side of upper epidermis Reason coats adhesive with respect to 4 one side surface of upper epidermis in middle layer 3, forms middle layer 3 with respect to 4 one side surface of upper epidermis and use In the adhesive layer 30 bonded with heat-sealing layer film 20；Packaging film semi-finished product 10 and heat-sealing layer film 20 bond in set composite 64 Extend packaging film 1 at height.
Preferably, in the step (2), upper epidermis film 40 also passes through printing treatment, in 40 upper surface of upper epidermis film Form printing layer.
Preferably, in the step (5) and (6), the heating temperature of set composite 64 is 30-50 DEG C.
Embodiment three
A kind of improvement project of the present embodiment as embodiment, the present embodiment provides the high production method for extending packaging film 1, The following steps are included:
(1) prepare material: including upper epidermis membrane material, intermediate layer coiled material and hot sealing layer membrane material；Upper epidermis membrane material be nylon or Modification of nylon film, the upper epidermis membrane material with a thickness of 1-30 μm；Hot sealing layer membrane material be polypropylene or modified polypropene film, it is described Hot sealing layer membrane material with a thickness of 50-120 μm；Intermediate layer coiled material is aluminium alloy, elongation percentage 2-5%, middle layer coil thickness It is 1-30 μm；
(2) it pre-processes upper epidermis membrane material: retracting after 40 outer surface of upper epidermis film progress sided corona treatment is rolled up at upper epidermis Material is spare；
(3) it pre-processes hot sealing layer membrane material: retracting after heat-sealing 20 outer surface of layer film progress sided corona treatment is rolled up at hot sealing layer Material is spare；
(4) packaging film semi-finished product are prepared: upper epidermis coiled material and intermediate layer coiled material are respectively placed in the of high speed bonder In one charging axle 61 and the second charging axle 62；First charging axle 61 and the second charging axle 62 are fed to set composite 64；Middle layer Film 31 carries out spray treatment or roller coating processing before entering set composite 64, coats and bonds in 31 upper surface of intermediate layer film Agent makes 31 upper surface of intermediate layer film form adhesive layer 30；Upper epidermis film 40 and intermediate layer film 31 are in set composite 64 It is bonded into packaging film semi-finished product 10；
(5) preparation is high extends packaging film 1: packaging film semi-finished product 10 and heat-sealing layer coiled material are respectively placed in high speed bonder The first charging axle 61 and the second charging axle 62 on；First charging axle 61 and the second charging axle 62 are fed to set composite 64；Packet Film semi-finished product 10 are filled before entering set composite 64, middle layer 3 is carried out at spray treatment or roller coating with respect to 4 side of upper epidermis Reason coats adhesive with respect to 4 one side surface of upper epidermis in middle layer 3, forms middle layer 3 with respect to 4 one side surface of upper epidermis and use In the adhesive layer 30 bonded with heat-sealing layer film 20；Packaging film semi-finished product 10 and heat-sealing layer film 20 bond in set composite 64 Extend packaging film 1 at height.
Preferably, in the step (2), upper epidermis film 40 also passes through printing treatment, in 40 upper surface of upper epidermis film Form printing layer.
Preferably, in the step (5) and (6), the heating temperature of set composite 64 is 50-75 DEG C.
Example IV
A kind of improvement project of the present embodiment as embodiment, the present embodiment provides the high production method for extending packaging film 1, The following steps are included:
(1) prepare material: including upper epidermis membrane material, intermediate layer coiled material and hot sealing layer membrane material；Upper epidermis membrane material be nylon or Modification of nylon film, the upper epidermis membrane material with a thickness of 1-30 μm；Hot sealing layer membrane material be polypropylene or modified polypropene film, it is described Hot sealing layer membrane material with a thickness of 50-120 μm；Intermediate layer coiled material is aluminium alloy, elongation percentage 2-5%, middle layer coil thickness It is 1-30 μm；
(2) it pre-processes upper epidermis membrane material: retracting after 40 outer surface of upper epidermis film progress sided corona treatment is rolled up at upper epidermis Material is spare；
(3) it pre-processes hot sealing layer membrane material: retracting after heat-sealing 20 outer surface of layer film progress sided corona treatment is rolled up at hot sealing layer Material is spare；
(4) packaging film semi-finished product are prepared: upper epidermis coiled material and intermediate layer coiled material are respectively placed in the of high speed bonder In one charging axle 61 and the second charging axle 62；First charging axle 61 and the second charging axle 62 are fed to set composite 64；Middle layer Film 31 carries out spray treatment or roller coating processing before entering set composite 64, coats and bonds in 31 upper surface of intermediate layer film Agent makes 31 upper surface of intermediate layer film form adhesive layer 30；Upper epidermis film 40 and intermediate layer film 31 are in set composite 64 It is bonded into packaging film semi-finished product 10；
(5) preparation is high extends packaging film 1: packaging film semi-finished product 10 and heat-sealing layer coiled material are respectively placed in high speed bonder The first charging axle 61 and the second charging axle 62 on；First charging axle 61 and the second charging axle 62 are fed to set composite 64；Packet Film semi-finished product 10 are filled before entering set composite 64, middle layer 3 is carried out at spray treatment or roller coating with respect to 4 side of upper epidermis Reason coats adhesive with respect to 4 one side surface of upper epidermis in middle layer 3, forms middle layer 3 with respect to 4 one side surface of upper epidermis and use In the adhesive layer 30 bonded with heat-sealing layer film 20；Packaging film semi-finished product 10 and heat-sealing layer film 20 bond in set composite 64 Extend packaging film 1 at height.
Preferably, in the step (2), upper epidermis film 40 also passes through printing treatment, in 40 upper surface of upper epidermis film Form printing layer.
Preferably, in the step (5) and (6), the heating temperature of set composite 64 is 75-100 DEG C.
A kind of improvement project as embodiment one to example IV: intermediate layer coiled material can be by 20 μm of aluminium alloy of thickness G T.GT.GT Web-handled forms, and specifically, aluminum alloy coiled materials is inputted in roll mill, aluminum alloy coiled materials are rolled into a thickness of 1- by roll mill 30 μm of fine sheet.
Compared with prior art, the high production method for extending packaging film 1 of the embodiment of the present invention one to four, has following The utility model has the advantages that
(1) by forming adhesive layer 30 in 31 upper and lower surfaces of intermediate layer film, keep upper epidermis thin using adhesive Film 40, heat-sealing layer film 20 and middle layer 3 are bonded, and production energy consumption is effectively reduced, and save production cost；
(2) it is preparing upper epidermis film 40 and is sealing the stage of layer film 20, by upper epidermis film 40 and hot sealing layer Film 20 carries out sided corona treatment, increases upper epidermis film 40 and seals the degree of roughness of 20 upper and lower surface of layer film, to increase Contact area and adhesive force between layers keep middle layer 3 and the bonding of upper epidermis 4, hot sealing layer 2 even closer, Jin Erti Adhesive strength after high upper epidermis 4, hot sealing layer 2 and the bonding of middle layer 3；In addition, on upper epidermis film 40 and heat-sealing layer film 20 After the degree of roughness of lower surface increases, easy after bonding with middle layer 3 there are fine clearances, and adhesive can fill gap, mention The high structural strength for extending packaging film 1；
(3) in the high production method for extending packaging film 1 of the invention, first upper epidermis film 40 and intermediate layer film 31 are glued After synthetical plastics film semi-finished product 10, then packaging film semi-finished product 10 are processed, heat-sealing layer film 20 is made to be bonded in 3 phase of middle layer Upper epidermis film 40 is made compared to directly adhesive is coated in 31 upper and lower surfaces of intermediate layer film to 4 side of upper epidermis The processing method bonded simultaneously with intermediate layer film 31 with heat-sealing layer film 20；It is pasted in intermediate layer film 31 and upper epidermis film 40 During conjunction, the pressure that can ensure that set composite 64 applies is applied directly on intermediate layer film 31, to keep middle layer thin Film 31 is bonded closer with upper epidermis film 40；On the other hand, after intermediate layer film 31 is bonded with upper epidermis film 40, middle layer Film 31 is fixed on upper epidermis film 40, when hot sealing layer 20 can effectively be avoided to be bonded in middle layer 3 with respect to 4 side of upper epidermis, 31 stress of intermediate layer film stretches, and intermediate layer thickness is caused to become smaller, and makes the high service performance decline for extending packaging film 1.
Comparative example one
Unlike embodiment one: in step (5) and (6), the heating temperature of set composite 64 is comparative example one 101-125℃。
Comparative example two
Unlike embodiment one: comparative example two is in step (2) and step (3), upper epidermis film 40 and hot sealing layer Film 20 is without sided corona treatment.
Comparative example three
Unlike embodiment one: comparative example one misaligns a layer film and carries out at spraying in step (5) and (6) Reason or roller coating processing.
Comparative example four
Unlike example IV: comparative example four misaligns a layer film and carries out at spraying in step (5) and (6) Reason or roller coating processing.
Comparative example five
Unlike example IV: comparative example five misaligns a layer film and carries out at spraying in step (5) and (6) Reason or roller coating processing；The heating temperature of set composite 64 is 101-125 DEG C.
Comparative example six
Unlike example IV: comparative example six misaligns a layer film and carries out at spraying in step (5) and (6) Reason or roller coating processing；The heating temperature of set composite 64 is 125-200 DEG C.
Comparative example seven
Unlike example IV: comparative example seven misaligns a layer film and carries out at spraying in step (5) and (6) Reason or roller coating processing；The heating temperature of set composite 64 is 200-250 DEG C.
Bond strength test
Test purpose: the degree of roughness of adhesive strength between layers and combined temp, adhesive addition, material is tested Relationship.
It tests remarks: packaging film 1 being extended to height prepared by the embodiment of the present invention one to four and comparative example one to seven and is carried out Average value is tested and gone to multiple groups, obtains the degree of roughness of combined temp, adhesive addition, material to the high knot for extending packaging film 1 The influence result of structure intensity is as shown in the table, and wherein peel strength is according to ASTM D903-10 standard testing.
Combined temp, adhesive addition are to the high bond strength test table for extending packaging film
Continued
Summarize 1: by embodiment one to embodiment two it is found that set composite 64 is bonded in layers of material in step (5) It is heated in the process, the bondability of layers of material can be made to improve, and then improve the high structural strength for extending packaging film 1.
Summarize 2: by embodiment one to example IV it is found that set composite 64 is bonded in layers of material in step (5) The temperature heated in the process is different, and the structural strength that height extends packaging film 1 is different.
Summarize 3: by embodiment one and comparative example two it is found that the heating temperature of set composite 64 is unsuitable excessively high in step (5), When heating temperature≤100 DEG C of set composite 64, the bondability of layers of material with set composite 64 heating temperature liter It is high and improve；The optimum heating temperature of set composite 64 is 75-100 DEG C.
Summarize 4: by embodiment one and comparative example two it is found that upper epidermis film 40 and hot sealing layer in step (2) and step (3) Film 20 has carried out sided corona treatment, increases upper epidermis film 40 and seals the degree of roughness of 20 upper and lower surface of layer film, to increase Contact area between layers and adhesive force greatly, keep middle layer 3 and the bonding of upper epidermis 4, hot sealing layer 2 even closer.
Summarize 5: by embodiment one and comparative example three it is found that carrying out by addition adhesive to layers of material in step (5) Bonding, improves the bondability of layers of material, and then improves the high structural strength for extending packaging film 1.
Summarize 6: by embodiment one, comparative example three and comparative example four it is found that carrying out spray treatment misaligning a layer film Or in the case that roller coating is handled, heating temperature≤100 DEG C of set composite 64 are can not to make middle layer 3 and upper table in step (5) Layer 4, hot sealing layer 2 are bonded.
Summarize 7: by embodiment one to example IV and comparative example one to comparative example seven, the addition of adhesive in step (5), It can be realized and do not heat or high extension packaging film 1 is made with layers of material bonding under lower heating temperature.
Embodiment five
Referring to fig. 4 to Fig. 6, this implementation provide it is high extend packaging film 1, including membrane body, the membrane body include upper epidermis 4, in Interbed 3 and hot sealing layer 2, upper epidermis 4, middle layer 3 and hot sealing layer 2 successively stack bonding from top to bottom；The thickness of the middle layer 3 It is 1-30 μm；The middle layer 3 is made of aluminium alloy；The elongation percentage of the middle layer is 2-5%.
The upper epidermis 4 is made of nylon or modification of nylon；The hot sealing layer 2 is made of polypropylene or modified polypropene. The nylon or modified nylon materials of upper epidermis 4 have good extensibility and higher toughness, can provide for middle layer 3 enough Protection, avoids middle layer 3 from being broken after the stretch.
Overall thickness≤150 μm of the membrane body；The upper epidermis 4 with a thickness of 1-30 μm；The hot sealing layer 2 with a thickness of 50-120μm；Above-mentioned set-up mode avoids under the premise of ensuring that high extension packaging film 1 of the invention has good ductility The high overall thickness for extending packaging film 1 of the invention is blocked up, and manufacturing cost is caused to rise, in addition, this setup can ensure that this High extend of invention has preferable oil resistivity, organic solvent resistance and wearability on the upside of packaging film 1, downside is convenient for packaging Box/packaging membrane material is sealed.
Specifically, upper epidermis 4 is with a thickness of 10-30 μm, middle layer 3 is with a thickness of 5-15 μm, and hot sealing layer 2 is with a thickness of 50-110 μ m.The upper epidermis 4 is 45M Pa by tensile strength by enhanced synchro-draw nylon, the hot sealing layer 2, and elongation at break is 520% polypropylene is made.And common polypropylene tensile strength is 35M Pa, elongation at break 400% on the market.
The middle layer 3 is made of aluminum-iron alloy；Contain ferro element in the middle layer 3, the absorption of middle layer 3 can be improved The ability of oxygen and moisture content, and then the high packaging film 1 that extends is improved to the fresh-keeping effect of food.
Specifically, 3 component of middle layer is as follows according to weight ratio: aluminium: iron: silicon=(97-99): (0.60~1.5): (0.50~1.5).
Specifically, the middle layer 3 is 8011 aluminium alloys.
The upper epidermis 4 is in granular form to the surface of 3 side of middle layer；Or, the middle layer 3 is to the upper epidermis The surface of 4 sides is in granular form.
The hot sealing layer 2 is in granular form to the surface of 3 side of middle layer；Or, the middle layer 3 is to the hot sealing layer The surface of 2 sides is in granular form.
Since upper epidermis 4 and hot sealing layer 2 are thermoplastic material, the set-up mode of above-mentioned raising surface roughness can be improved The bondability with upper epidermis 4, hot sealing layer 2 respectively of middle layer 3, it is ensured that upper epidermis 4, hot sealing layer 2 are firm to be bonded in middle layer 3 Lower surface.
Embodiment six
Referring to Fig. 7 to Fig. 8, this implementation provide it is high extend packaging film 1, including membrane body, the membrane body include upper epidermis 4, in Interbed 3 and hot sealing layer 2, upper epidermis 4, middle layer 3 and hot sealing layer 2 successively stack bonding from top to bottom；The thickness of the middle layer 3 It is 1-30 μm；The middle layer 3 is made of aluminium alloy；The elongation percentage of the middle layer is 2-5%.
The upper epidermis 4 is made of nylon or modification of nylon；The hot sealing layer 2 is made of polypropylene or modified polypropene. The nylon or modified nylon materials of upper epidermis 4 have good extensibility and higher toughness, can provide for middle layer 3 enough Protection, avoids middle layer 3 from being broken after the stretch.
Overall thickness≤150 μm of the membrane body；The upper epidermis 4 with a thickness of 1-30 μm；The hot sealing layer 2 with a thickness of 50-120μm；Above-mentioned set-up mode avoids under the premise of ensuring that high extension packaging film 1 of the invention has good ductility The high overall thickness for extending packaging film 1 of the invention is blocked up, and manufacturing cost is caused to rise, in addition, this setup can ensure that this High extend of invention has preferable oil resistivity, organic solvent resistance and wearability on the upside of packaging film 1, downside is convenient for heat Envelope.
Specifically, upper epidermis 4 is with a thickness of 10-30 μm, middle layer 3 is with a thickness of 5-15 μm, and hot sealing layer 2 is with a thickness of 50-110 μ m.The upper epidermis 4 is 45M Pa by tensile strength by enhanced synchro-draw nylon, the hot sealing layer 2, and elongation at break is 520% polypropylene is made.And common polypropylene tensile strength is 35M Pa, elongation at break 400% on the market.
The middle layer 3 is made of aluminum-iron alloy；Contain ferro element in the middle layer 3, the absorption of middle layer 3 can be improved The ability of oxygen and moisture content, and then the high packaging film 1 that extends is improved to the fresh-keeping effect of food.
Specifically, 3 component of middle layer is as follows according to weight ratio: aluminium: iron: silicon=(97-99): (0.60~1.5): (0.50~1.5).
Specifically, the middle layer 3 is 8011 aluminium alloys.
The upper epidermis 4 is in granular form to the surface of 3 side of middle layer；Or, the middle layer 3 is to the upper epidermis The surface of 4 sides is in granular form.
The hot sealing layer 2 is in granular form to the surface of 3 side of middle layer；Or, the middle layer 3 is to the hot sealing layer The surface of 2 sides is in granular form.
Since upper epidermis 4 and hot sealing layer 2 are thermoplastic material, the set-up mode of above-mentioned raising surface roughness can be improved The bondability with upper epidermis 4, hot sealing layer 2 respectively of middle layer 3, it is ensured that upper epidermis 4, hot sealing layer 2 are firm to be bonded in middle layer 3 Lower surface.
It further include adhesive layer 30, the adhesive layer 30 is arranged between upper epidermis 4 and middle layer 3 and/or middle layer 3 and heat Between sealing 2, the adhesive layer 30 is for bonding two adjacent layers；The adhesive layer 30 is with a thickness of 0.1-10 μm；It is described viscous Layer 30 is closed to be made of viscoelastic polyurethane condensation material.
Specifically, 30 optimum thickness of adhesive layer is 2-5 μm.
Compared with prior art, the high extension packaging film 1 that the embodiment of the present invention six provides, has the advantages that
(1) present invention is closed by the way that middle layer 3 made of aluminium alloy are arranged between upper epidermis 4 and hot sealing layer 2 using aluminium The good stretch-resistance of gold improves the ductility of membrane body, and avoiding membrane body, surface will appear micropore after the stretch, so that it is guaranteed that The gas and liquid of two sides can not exchange flowing above and below membrane body；
(2) middle layer 3 of the invention is made of aluminium alloy, on the one hand middle layer 3 can absorb oxygen and moisture content, to reduce The oxygen content and water content of membrane body either side can effectively reduce when using high extension packaging film cladding food materials of the invention Oxygen and moisture content in food materials local environment, avoid food materials from degenerating, and on the other hand, middle layer 3 can shape after absorbing oxygen At fine and close protective layer, contacted so that extraneous gas and liquid effectively be avoided to pass through the present invention with food materials.
Film performance test
Test purpose: influence of the thickness of test layer and layers of material to the high performance for extending packaging film 1.
Test remarks: to the present invention to the thickness of upper epidermis 4, the thickness of middle layer 3, hot sealing layer 2 thickness and adhesive layer The different high packaging film 1 that extends of 30 thickness carries out multiple groups test and removes average value, and the thickness for obtaining layers of material extends height The influence result of the performance of packaging film 1 is as shown in the table, wherein interlayer of first adhesive layer between upper epidermis 4 and middle layer 3, Interlayer of second adhesive layer between middle layer 3 and hot sealing layer 2；Moisture-vapor transmission, oil resistance, gas permeation rate and gas Absorptivity is surveyed according to GB/T1038-2000 standard testing, tensile strength and elongation at break according to GB/T13022-1991 standard Examination, surface pinholes quantity (after stretching) are obtained by microscopy apparatus range estimation.
Sample composition list
Height extends the test result list of packaging film through performance
Serial number Moisture-vapor transmission (%) Oily transmitance (%) Gas permeation rate (%) Gas absorptivity (%)
Sample 1 10 5 8 2
Sample 2 5 3 0 4
Sample 3 0 2 0 4
Sample 4 0 5 0 5
Sample 5 0 5 0 5
Sample 6 10 2 8 2
Sample 7 0 2 0 5
Sample 8 0 2 0 5
Sample 9 10 2 8 2
Sample 10 0 2 0 5
Sample 11 0 2 0 5
Height extends the list of packaging film mechanical experimental results
Serial number Tensile strength (MPa) Elongation at break (%) Surface pinholes quantity (after stretching) (a/10cm2)
Sample 1 30 350 6-8
Sample 2 30 365 6-7
Sample 3 30 383 5-6
Sample 4 30 380 6-7
Sample 5 30 400 3-4
Sample 6 50 370 3-4
Sample 7 65 420 1-2
Sample 8 66 425 1-2
Sample 9 50 390 3-4
Sample 10 65 420 1-2
Sample 11 66 425 1-2
By above-mentioned experimental data it is found that middle layer 3 is with a thickness of 5-30 μm, heat-sealing when upper epidermis 4 is with a thickness of 10-30 μm Layer 2 with a thickness of 50-110 μm when, height extend packaging film 1 properties it is best；And since middle layer 3 is with a thickness of 5-15 μm When with 15-30 μm, the properties that height extends packaging film 1 improve unobvious, it is contemplated that save production cost, middle layer 3 is most It is good with a thickness of 5-15 μm.
Embodiment seven
Referring to Fig. 9, it is above-mentioned using above-mentioned high extension packaging film 1 or application that it is a further object to provide a kind of The high outer packing 5 for extending packaging film 1 that production method is produced comprising the first membrane body 51 and the second membrane body 52, the first membrane body 51 and second membrane body 52 be it is above-mentioned it is high extend packaging film 1, the hot sealing layer 2 of the first membrane body 51 and the second membrane body 52 is oppositely arranged, The edge of first membrane body 51 and the second membrane body 52, which stacks and heats pressing, forms sealing 53；First membrane body 51 and the second membrane body 52 Middle part is enclosed accommodating chamber 50.
Sawtooth 54 and/or opening 55 are equipped on the outside of the sealing 53；This setup is torn described outer convenient for user Packaging 5；Specifically, the opening 55 extends from 53 outer of sealing to 50 direction of accommodating chamber.
Compared with prior art, a kind of outer packing 5 of the invention has good extensibility, is stretching extension rear surface Be not in micropore, to effectively completely cut off the entrance of extraneous gas and liquid, and then the packing material in outer packing 5 avoided to become Matter.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party Formula is changed and is modified.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to of the invention Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.

Claims (10)

1. height extends packaging film, it is characterised in that: including membrane body, the membrane body includes upper epidermis, middle layer and hot sealing layer, upper table Layer, middle layer and hot sealing layer successively stack bonding from top to bottom；
The middle layer with a thickness of 1-30 μm；
The middle layer is made of aluminium alloy；The elongation percentage of the middle layer is 2-5%.
2. high extension packaging film according to claim 1, it is characterised in that: the upper epidermis is by nylon or modification of nylon system At；The hot sealing layer is made of polypropylene or modified polypropene.
3. high extension packaging film according to claim 2, it is characterised in that: overall thickness≤150 μm of the membrane body；It is described Upper epidermis with a thickness of 1-30 μm；The hot sealing layer with a thickness of 50-120 μm.
4. high extension packaging film according to claim 1, it is characterised in that: the middle layer is made of aluminum-iron alloy.
5. high extension packaging film according to any one of claims 1 to 4, it is characterised in that: it further include adhesive layer, it is described viscous Layer setting is closed between upper epidermis and middle layer and/or between middle layer and hot sealing layer, the adhesive layer is adjacent for bonding Two layers；
The adhesive layer is made of viscoelastic polyurethane condensation material.
6. high extension packaging film according to claim 5, it is characterised in that: the bondline thickness is 0.1-10 μm.
7. the production method that height extends packaging film, it is characterised in that: the following steps are included:
(1) prepare material: including upper epidermis membrane material, intermediate layer coiled material and hot sealing layer membrane material；Upper epidermis membrane material is nylon or modification Nylon membrane, the upper epidermis membrane material with a thickness of 1-30 μm；Hot sealing layer membrane material is polypropylene or modified polypropene film, the heat-sealing Tunic material with a thickness of 50-120 μm；Intermediate layer coiled material is aluminium alloy, and middle layer coil thickness is 1-30 μm；
(2) pre-process upper epidermis membrane material: retracting is spare at upper epidermis coiled material after carrying out sided corona treatment to upper epidermis film outer surface；
(3) pre-process hot sealing layer membrane material: retracting is spare at heat-sealing layer coiled material after carrying out sided corona treatment to hot sealing layer film outer surface；
(4) packaging film semi-finished product are prepared: by upper epidermis coiled material and intermediate layer coiled material be respectively placed in the first of high speed bonder into Expect in axis and the second charging axle；First charging axle and second feeds axial set composite charging；Intermediate layer film is compound in entrance Spray treatment or roller coating processing are carried out before device, are coated adhesive in intermediate layer film upper surface, are made intermediate layer film upper surface Form adhesive layer；Upper epidermis film and intermediate layer film are bonded into packaging film semi-finished product in set composite；
(5) preparation is high extends packaging film: packaging film semi-finished product and heat-sealing layer coiled material are respectively placed in the first of high speed bonder In charging axle and the second charging axle；First charging axle and second feeds axial set composite charging；Packaging film semi-finished product are entering Before set composite, spray treatment is carried out with respect to upper epidermis side to middle layer or roller coating is handled, in middle layer with respect to upper epidermis one Side surface coats adhesive, forms middle layer for the adhesive layer with heat-sealing layer film bonding with respect to one side surface of upper epidermis； Packaging film semi-finished product and heat-sealing layer film are bonded into high extension packaging film in set composite.
8. the high production method for extending packaging film according to claim 7, it is characterised in that: in the step (2), upper table Layer film also passes through printing treatment, forms printing layer in upper epidermis film upper surface.
9. outer packing, it is characterised in that: including the first membrane body and the second membrane body, the first membrane body and the second membrane body are claim 1 To 6 described in any item high extension packaging films, the hot sealing layer of the first membrane body and the second membrane body is oppositely arranged, the first membrane body and second The edge of membrane body, which stacks and heats pressing, forms sealing, is enclosed accommodating chamber in the middle part of the first membrane body and the second membrane body.
10. outer packing, it is characterised in that: including the first membrane body and the second membrane body, the first membrane body and the second membrane body are claim 7 To the extension packaging film of height made of 8 described in any item production methods, the hot sealing layer of the first membrane body and the second membrane body is oppositely arranged, The edge of first membrane body and the second membrane body, which stacks and heats pressing, forms sealing, encloses shape in the middle part of the first membrane body and the second membrane body At accommodating chamber.
CN201811357194.5A 2018-11-15 2018-11-15 Height extends packaging film, its production method and outer packing Pending CN109367157A (en)

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CN111820713A (en) * 2020-06-30 2020-10-27 深圳市行疆技术有限公司 Metal film, paper pot and manufacturing method thereof
CN111820712A (en) * 2020-06-30 2020-10-27 深圳市行疆技术有限公司 Metal film, paper pot and manufacturing method thereof
CN111850352A (en) * 2020-07-14 2020-10-30 深圳市优点智慧科技有限公司 Metal layer, paper pot and manufacturing method thereof

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CN111820713A (en) * 2020-06-30 2020-10-27 深圳市行疆技术有限公司 Metal film, paper pot and manufacturing method thereof
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