CN109291580A - A kind of plastic-aluminum combined sealed membrane and preparation method thereof - Google Patents
A kind of plastic-aluminum combined sealed membrane and preparation method thereof Download PDFInfo
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- CN109291580A CN109291580A CN201811191244.7A CN201811191244A CN109291580A CN 109291580 A CN109291580 A CN 109291580A CN 201811191244 A CN201811191244 A CN 201811191244A CN 109291580 A CN109291580 A CN 109291580A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
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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
- B32B15/04—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
- B32B15/04—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
- B32B15/09—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 polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- 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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/10—Container closures formed after filling
- B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
- B29L2009/005—Layered products coated
-
- 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
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/31—Heat sealable
-
- 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
- B32B2307/582—Tearability
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Abstract
The invention belongs to composite membrane technology fields, disclose a kind of plastic-aluminum combined sealed membrane and preparation method thereof, the plastic-aluminum combined sealed membrane includes the protective layer set gradually from top to bottom, barrier layer and hot sealing layer, the hot sealing layer by special ratios high density polyethylene (HDPE), low density polyethylene (LDPE), polybutene and ethylene propylene copolymer composition, low density polyethylene (LDPE) and ethylene propylene copolymer are added in polybutene and high density polyethylene (HDPE), not only increase the compatibility between each component, make raw material mixing more evenly, and improve the moulding processability of hot sealing layer, each component coordinated, improve the homogeneity of hot sealing layer, so that plastic-aluminum combined sealed membrane of the invention is when Polypropylene bottle bottleneck combines, it is moderate in conjunction with dynamics, it is easy to open, it is also not easy to be open and lead to seal failure simultaneously.
Description
Technical field
The invention belongs to composite membrane technology field, it is related to a kind of aluminum-plastic composite membrane and preparation method thereof, more particularly, to
A kind of plastic-aluminum combined sealed membrane and preparation method thereof.
Background technique
Plastic-aluminum combined sealed membrane is widely used in the bottleneck encapsulation of Polypropylene bottle, in the prior art, plastic-aluminum combined envelope
Membrana oralis be usually by light oil reservoir or PET laminated polyester film, ink, aluminium foil, polyethylene film or cast polypropylene film it is compound and
At.Wherein, light oil reservoir or PET laminated polyester film are arranged in outer layer, as the protective layer of sealed membrane, to the ink layer in sealed membrane
It shields, polyethylene film or cast polypropylene film are arranged in internal layer, as the hot sealing layer of sealed membrane, for heating
When and Polypropylene bottle bottleneck fuse to seal bottleneck.However, using polyethylene film or cast polypropylene film conduct
Hot sealing layer is merged in heating melting with the generation of the bottleneck of Polypropylene bottle, and sealing fastness is fabulous, and the sealed membrane of formation is not
It easily opens, needs toward contact by other tools, use is extremely inconvenient.
For this purpose, Chinese patent literature CN102700819A discloses a kind of aluminum foil sealing film and preparation method thereof, the envelope
Membrana oralis includes protective layer, barrier layer and hot sealing layer, and the protective layer is light oil reservoir or PET film layer, and the barrier layer is aluminium foil layer,
The hot sealing layer is made of following material, and the polybutene of 15~25wt%, the ethylene-propylene copolymer of 25~35wt% and 40~
The HDPE of 60wt%.When sealed membrane of the above-mentioned sealed membrane as Polypropylene bottle, easily opened and boiling resistance with excellent
Can, the use characteristic of aluminum foil sealing film is significantly improved, however, the melt index of above-mentioned HDPE is 0.2~0.5g/min,
Mobility is poor, be not easy it is evenly dispersed in polybutene and ethylene-propylene copolymer obtain homogeneous mixture so that above-mentioned aluminium foil sealing
Film and Polypropylene bottle bottleneck binding force degree are uneven, that is, the binding force of part aluminum foil sealing film and Polypropylene bottle bottleneck
Degree is big, relatively elaborate when opening, and the combination dynamics of another part and Polypropylene bottle bottleneck is small, is easy to open, once
Article in transportational process in Polypropylene bottle hits sealed membrane, which is easy opening, causes to seal
Product leakage in failure or even bottle.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming aluminum foil sealing film and polypropylene plastics in the prior art
The defect of combination dynamics unevenness between bottle bottleneck, so that a kind of plastic-aluminum combined sealed membrane is provided, with Polypropylene bottle bottle
Combine dynamics uniform between mouthful, being easy to open and be not easy opening leads to seal failure.Meanwhile the present invention also provides a kind of above-mentioned
The preparation method of plastic-aluminum combined sealed membrane.
In order to solve the above technical problems, the present invention provides a kind of plastic-aluminum combined sealed membranes, including successively set from top to bottom
Protective layer, barrier layer and the hot sealing layer set, the protective layer are light oil reservoir or PET laminated polyester film, and the barrier layer is aluminium foil
Layer, the hot sealing layer includes the component of following parts by weight: 50~55 parts of high density polyethylene (HDPE), 10~15 parts of low density polyethylene (LDPE),
25~30 parts of polybutene, 15~20 parts of ethylene propylene copolymer.
Further, each component fusing point of the hot sealing layer is formed not higher than 130 DEG C.
Further, the hot sealing layer is three-layer extrusion film, the first polyethylene including being successively bonded setting from top to bottom
The raw material of layer, the second polyethylene layer and third polyethylene layer, first polyethylene layer and the second polyethylene layer is poly- for high density
The mixture of ethylene, low density polyethylene (LDPE) and ethylene propylene copolymer composition, the raw material of the third polyethylene layer be polybutene,
The mixture of high density polyethylene (HDPE) and low density polyethylene (LDPE) composition.
Further, when the protective layer be light oil reservoir when, the protective layer with a thickness of 1~5 μm；When the protective layer
When for PET laminated polyester film, the protective layer with a thickness of 6~20 μm；The barrier layer with a thickness of 20~70 μm；The heat
Sealing with a thickness of 30~100 μm.
Further, character pattern layer is additionally provided between the protective layer and the barrier layer.
The present invention also provides a kind of preparation methods of above-mentioned plastic-aluminum combined sealed membrane, include the following steps:
When the protective layer is light oil reservoir, gloss oil is coated on the surface of the barrier layer, it is dry, obtain light oil reservoir；?
Another surface of the barrier layer coats binder, dry, forms the binder in the barrier layer surface cure and binds
Oxidant layer；At 50~80 DEG C, the hot sealing layer and the adhesive layer hot pressing are combined with each other, base film is obtained；
When the protective layer is PET laminated polyester film, binder is coated on the surface of the barrier layer, it is dry, make institute
It states binder and forms the first adhesive layer in the barrier layer surface cure；At 50~80 DEG C, by the protective layer with it is described
First adhesive layer hot pressing is combined with each other；Binder is coated on another surface of the barrier layer, it is dry, make the binder
The second adhesive layer is formed in another surface cure of the barrier layer；At 50~80 DEG C, by the hot sealing layer and described the
Two adhesive layer hot pressing are combined with each other, and obtain base film；
The base film is cured at 55~70 DEG C, the curing time >=96h.
Further, when the protective layer is light oil reservoir, before the surface of the barrier layer coats gloss oil, first to described
Barrier layer is printed, and character pattern layer is formed；When the protective layer is PET laminated polyester film, to the protective layer and
Before the barrier layer carries out hot pressing, first printing on one side to the protective layer and the barrier layer hot pressing, formation text figure
Pattern layer.
Further, include the following steps:
When the protective layer is light oil reservoir, printed on the surface of the barrier layer, to form character pattern layer；Institute
The speed for stating printing is 40~120m/min, and the temperature dried after printing is 40~100 DEG C；On the surface of the character pattern layer
Gloss oil is coated, the speed of the gloss oil coating is 40~120m/min, it is dry at 50~100 DEG C, obtain light oil reservoir；Described
Another surface of barrier layer coats binder, and first is carried out at 50~80 DEG C and is dried, makes the binder in the resistance
Interlayer surface cure forms adhesive layer, then at 50~80 DEG C, the hot sealing layer and the adhesive layer hot pressing is compound
Together, base film is obtained；
When the protective layer is PET laminated polyester film, printed on the surface of the protective layer, to form text figure
Pattern layer；The speed of the printing is 100~220m/min, and the temperature dried after printing is 40~80 DEG C；In the character pattern
The surface of layer coats binder, and second is carried out at 70~90 DEG C and is dried, makes the binder in the barrier layer surface
It is formed by curing the first adhesive layer；At 50~80 DEG C, the barrier layer and the first adhesive layer hot pressing are compounded in one
It rises；Binder is coated on another surface of the barrier layer, third drying process is carried out at 50~80 DEG C, makes the binder
The second adhesive layer is formed in another surface cure of the barrier layer；At 50~80 DEG C, by the hot sealing layer and described the
Two adhesive layer hot pressing are combined with each other, and obtain base film；
The base film is cured at 55~70 DEG C, the curing time >=96h.
Further, described first is dry dry including three sections of temperature, and one section of temperature is 50~60 DEG C, and two sections of temperature are higher than
Described 5~10 DEG C of one section of temperature, three sections of temperature are higher than described 10~20 DEG C of one section of temperature；Described second is dry including three sections of temperature
Dry, one section of temperature is 70~75 DEG C, and two sections of temperature are higher than described 5~10 DEG C of one section of temperature, and three sections of temperature are higher than described one section
10~15 DEG C of temperature；The dry third includes that three sections of temperature are dry, and one section of temperature is 50~60 DEG C, and two sections of temperature are higher than described
One section 5~10 DEG C of temperature, three sections of temperature are higher than described 10~20 DEG C of one section of temperature.
Further, the preparation of the hot sealing layer includes the following steps:
The raw material for forming each layer of the hot sealing layer is subjected to fusion plastification respectively, is squeezed out, blown film is then carried out, it is cooling, it obtains
To the hot sealing layer.
Herein, the PET polyester film refers to polyethylene terephthalate film, the low density polyethylene (LDPE), i.e.,
LDPE, also known as high pressure polyethylene, density are 0.915~0.940g/cm3, the high density polyethylene (HDPE), i.e. HDPE are also known as low
Pressure polyethylene, density are 0.940~0.976g/cm3.Herein, the high density polyethylene (HDPE), low density polyethylene (LDPE), ethylene
The melt index of propylene polyethylene and polybutene is within the scope of 0.5~2g/min.
Technical solution of the present invention has the advantages that
1. plastic-aluminum combined sealed membrane provided by the invention, including the protective layer, barrier layer and heat set gradually from top to bottom
Sealing, the hot sealing layer is by the high density polyethylene (HDPE) of special ratios, low density polyethylene (LDPE), polybutene and ethylene propylene copolymer group
At addition low density polyethylene (LDPE) and ethylene propylene copolymer, not only increase each component in polybutene and high density polyethylene (HDPE)
Between compatibility, make raw material mixing more evenly, and improve the moulding processability of hot sealing layer, each component coordinated,
Improve the homogeneity of hot sealing layer so that plastic-aluminum combined sealed membrane of the invention Polypropylene bottle bottleneck combine when, in conjunction with
Dynamics is moderate, is easy to open, while being also not easy to be open and lead to seal failure.In the present invention, each group of the hot sealing layer is formed
/ coordinated, enable sealed membrane of the invention have excellent boiling resistance, can at 121 DEG C boiling 30min with
On, there is good line easy-tear performance, tear on rear Polypropylene bottle bottleneck without any residual, wire drawing or plucking phenomenon.
2. plastic-aluminum combined sealed membrane provided by the invention, the hot sealing layer is three-layer extrusion film, including from top to bottom successively
It is bonded the first polyethylene layer, the second polyethylene layer and the third polyethylene layer of setting, the structure of three-layer extrusion film improves heat-sealing
Layer surface flatness and mechanical strength, further improve the properties of hot sealing layer, and between each layer by heat in conjunction with and
Without binder, therefore its wholesomeness is higher.
3. plastic-aluminum combined sealed membrane provided by the invention, further defines the thickness of each layer, the thickness of each film layer is main
Adhesion firmness between layers is influenced, each layer of plastic-aluminum combined sealed membrane of the invention uses specific thickness, so that described
Adhesion firmness is very high between plastic-aluminum combined each layer of sealed membrane, and by long-term use after will not still generate between each layer layering or
The phenomenon that splitting.
4. the preparation method of plastic-aluminum combined sealed membrane provided by the invention will constitute each layer of the plastic-aluminum combined sealed membrane
Hot pressing is compound at a certain temperature, and base film is made, and then carries out maturation process to the base film again, obtains described plastic-aluminum combined
Sealed membrane.The present invention is defined the parameters such as the hot pressing combined temp of each layer and temperature, the time of curing, keeps each layer more preferable
Ground is bonded together, without generating lamination.In the preparation of hot sealing layer, using composite molding technique is squeezed out, not only change
The combined strength bination of hot sealing layer has been apt to it, and has improved production efficiency, has reduced production cost.
5. the preparation method of plastic-aluminum combined sealed membrane provided by the invention is dried using three sections of temperature, latter two sections
Temperature is higher than one section of temperature, so set, the retarder thinner and instantaneous high-temperature that can sufficiently dry in binder go out
Existing binder appearance drying, and internal layer solvent can not dry sealed membrane is caused to lead to the problem of fold.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the plastic-aluminum combined sealed membrane of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of hot sealing layer in Fig. 1.
Description of symbols:
1- protective layer；2- barrier layer；3- hot sealing layer；The first polyethylene layer of 31-；The second polyethylene layer of 32-；33- third is poly-
Pvdf layer.
Specific embodiment
Technical solution of the present invention will be clearly and completely described below, it is clear that described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.In addition, below
Technical characteristic involved in described different embodiments of the present invention as long as they do not conflict with each other can be mutual
In conjunction with.
Embodiment 1
A kind of plastic-aluminum combined sealed membrane, as shown in Figure 1, including protective layer 1,2 and of barrier layer set gradually from top to bottom
Hot sealing layer 3, the thickness of each layer are respectively 6 μm, 20 μm and 30 μm.In the present embodiment, the protective layer 1 is PET laminated polyester film,
The barrier layer 2 is aluminium foil layer, the hot sealing layer 3 by the high density polyethylene (HDPE) of 50wt%, 10wt% low density polyethylene (LDPE),
The ethylene propylene copolymer of the polybutene of 25wt% and 15wt% composition, high density polyethylene (HDPE), low density polyethylene (LDPE), polybutene and
The fusing point of ethylene propylene copolymer is not higher than 130 DEG C.As shown in Fig. 2, hot sealing layer 3 is poly- including the first polyethylene layer 31, second
Pvdf layer 32 and third polyethylene layer 33, third polyethylene layer 33 are directly contacted with Polypropylene bottle bottleneck.Wherein first is poly-
Pvdf layer 31 is made of high density polyethylene (HDPE), low density polyethylene (LDPE) and ethylene propylene copolymer, and the weight ratio of three is 2:1:1,
Second polyethylene layer 32 is made of high density, low density polyethylene (LDPE) and ethylene propylene copolymer, and the weight ratio of three is 2:1:3,
Third polyethylene layer 33 is made of polybutene, high density polyethylene (HDPE) and low density polyethylene (LDPE), and the weight ratio of three is 5:8:1.
Hot sealing layer described in the present embodiment the preparation method comprises the following steps:
The raw material for forming each layer of the hot sealing layer is separately added into each layer extruder and carries out fusion plastification, extrusion, is then existed
Blow-up ratio is 1:2, and temperature carries out blown film under conditions of being 180 DEG C, then cooling through lower blowing water cold process, and three-layer extrusion film is made.
Plastic-aluminum combined sealed membrane described in the present embodiment the preparation method comprises the following steps:
Binder, dosage 4g/m are coated on the surface of PET polyester film2, continuously successively passed through with the speed of 80m/min
70 DEG C, 75 DEG C and 80 DEG C three sections of baking ovens are crossed to be dried to obtain the first adhesive layer, then in the case where hot drum temperature is 65 DEG C,
Aluminium foil layer and the first adhesive layer hot pressing are combined with each other；Binder, dosage are coated on another surface of aluminium foil layer
For 4g/m2, continuously successively it is dried to obtain the by 50 DEG C, 60 DEG C and 70 DEG C three sections of baking ovens with the speed of 100m/min
Hot sealing layer and the second adhesive layer hot pressing are combined with each other, obtain then in the case where hot drum temperature is 65 DEG C by two adhesive layers
To base film；The base film is cured at 65 DEG C, curing time 100h is to get the plastic-aluminum combined sealed membrane.
Embodiment 2
A kind of plastic-aluminum combined sealed membrane, including the protective layer, barrier layer and hot sealing layer set gradually from top to bottom, each layer
Thickness is respectively 1 μm, 20 μm and 30 μm.In the present embodiment, the protective layer is light oil reservoir, and the barrier layer is aluminium foil layer, institute
State hot sealing layer by the high density polyethylene (HDPE) of 47.3wt%, the low density polyethylene (LDPE) of 10.9wt%, 25.5wt% polybutene and
The ethylene propylene copolymer of 16.3wt% forms, high density polyethylene (HDPE), low density polyethylene (LDPE), polybutene and ethylene propylene copolymer
Fusing point be not higher than 130 DEG C.Hot sealing layer includes the first polyethylene layer, the second polyethylene layer and third polyethylene layer, and third is poly-
Pvdf layer is directly contacted with Polypropylene bottle bottleneck.Wherein the first polyethylene layer is by high density polyethylene (HDPE), low density polyethylene (LDPE)
And ethylene propylene copolymer composition, the weight ratio of three are 2:1:1, the second polyethylene layer by high density, low density polyethylene (LDPE) and
Ethylene propylene copolymer composition, the weight ratio of three are 2:1:3, and third polyethylene layer is by polybutene, high density polyethylene (HDPE) and low
Density polyethylene composition, the weight ratio of three are 14:20:3.
Hot sealing layer described in the present embodiment the preparation method comprises the following steps:
The raw material for forming each layer of the hot sealing layer is separately added into each layer extruder and carries out fusion plastification, extrusion, is then existed
Blow-up ratio is 1:4, and temperature carries out blown film under conditions of being 170 DEG C, then cooling through lower blowing water cold process, and three-layer extrusion film is made.
Plastic-aluminum combined sealed membrane described in the present embodiment the preparation method comprises the following steps:
Gloss oil is coated on the surface of aluminium foil layer, the speed of the gloss oil coating is 40m/min, it is dry at 50 DEG C, it obtains
Light oil reservoir；Binder, dosage 8g/m are coated on another surface of aluminium foil layer2, continuously successively passed through with the speed of 100m/min
60 DEG C, 70 DEG C and 80 DEG C three sections of baking ovens are crossed to be dried to obtain adhesive layer, it, will be hot then in the case where hot drum temperature is 50 DEG C
Sealing is combined with each other with the adhesive layer hot pressing, obtains base film；The base film is cured at 70 DEG C, curing time 96h,
Up to the plastic-aluminum combined sealed membrane.
Embodiment 3
A kind of plastic-aluminum combined sealed membrane, including protective layer, character pattern layer, barrier layer and the heat set gradually from top to bottom
Sealing, protective layer with a thickness of 20 μm, the ink usage of character pattern layer is 3g/m2, barrier layer with a thickness of 70 μm, hot sealing layer
With a thickness of 100 μm.In the present embodiment, the protective layer is PET laminated polyester film, and the barrier layer is aluminium foil layer, the heat
Sealing by the high density polyethylene (HDPE) of 45.8wt%, the low density polyethylene (LDPE) of 12.5wt%, 25wt% polybutene and 16.7wt%
Ethylene propylene copolymer composition, high density polyethylene (HDPE), low density polyethylene (LDPE), the fusing point of polybutene and ethylene propylene copolymer are equal
Not higher than 130 DEG C.Hot sealing layer include the first polyethylene layer, the second polyethylene layer and third polyethylene layer, third polyethylene layer with
Polypropylene bottle bottleneck directly contacts.Wherein the first polyethylene layer is by high density polyethylene (HDPE), low density polyethylene (LDPE) and ethylene propylene
The weight ratio of alkene copolymer composition, three is 2:1:3, and the second polyethylene layer is by high density, low density polyethylene (LDPE) and ethylene, propylene
The weight ratio of copolymer composition, three is 3:1:4, and third polyethylene layer is by polybutene, high density polyethylene (HDPE) and low density polyethylene
Alkene composition, the weight ratio of three are 3:4:1.
Hot sealing layer described in the present embodiment the preparation method comprises the following steps:
The raw material for forming each layer of the hot sealing layer is separately added into each layer extruder and carries out fusion plastification, extrusion, is then existed
Blow-up ratio is 1:5, and temperature carries out blown film under conditions of being 190 DEG C, then cooling through lower blowing water cold process, and three-layer extrusion film is made.
Plastic-aluminum combined sealed membrane described in the present embodiment the preparation method comprises the following steps:
The surface of PET polyester film is printed, to form character pattern layer, the dosage of ink is 3g/m2；The print
The speed of brush is 220m/min, and the temperature dried after printing is 80 DEG C；Binder is coated on the surface of the character pattern layer,
Dosage is 8g/m2, continuously successively it is dried by 72 DEG C, 80 DEG C and 85 DEG C three sections of baking ovens with the speed of 80m/min
To the first adhesive layer；Then in the case where hot drum temperature is 80 DEG C, aluminium foil layer and the first adhesive layer hot pressing are compounded in one
It rises；Binder, dosage 8g/m are coated on another surface of aluminium foil layer2, continuously successively pass through 55 with the speed of 100m/min
DEG C, 60 DEG C and 70 DEG C of three sections of baking ovens be dried to obtain the second adhesive layer, will be hot then in the case where hot drum temperature is 80 DEG C
Sealing is combined with each other with the second adhesive layer hot pressing, obtains base film；The base film is cured at 55 DEG C, the curing time
106h is to get the plastic-aluminum combined sealed membrane.
Embodiment 4
A kind of plastic-aluminum combined sealed membrane, including protective layer, character pattern layer, barrier layer and the heat set gradually from top to bottom
Sealing, protective layer are light oil reservoir, and with a thickness of 5 μm, the ink usage of character pattern layer is 2g/m2, barrier layer is aluminium foil layer,
With a thickness of 45 μm, hot sealing layer with a thickness of 65 μm, the hot sealing layer by the high density polyethylene (HDPE) of 45.8wt%, 12.5wt% it is low
The ethylene propylene copolymer of density polyethylene, the polybutene of 25wt% and 16.7wt% forms, and high density polyethylene (HDPE), low-density are poly-
The fusing point of ethylene, polybutene and ethylene propylene copolymer is not higher than 130 DEG C.Hot sealing layer gathers including the first polyethylene layer, second
Pvdf layer and third polyethylene layer, third polyethylene layer are directly contacted with Polypropylene bottle bottleneck.Wherein the first polyethylene layer
It is made of high density polyethylene (HDPE), low density polyethylene (LDPE) and ethylene propylene copolymer, the weight ratio of three is 2:1:3, the second poly- second
Alkene layer is made of high density, low density polyethylene (LDPE) and ethylene propylene copolymer, and the weight ratio of three is 3:1:4, third polyethylene
Layer is made of polybutene, high density polyethylene (HDPE) and low density polyethylene (LDPE), and the weight ratio of three is 3:4:1.
Hot sealing layer described in the present embodiment the preparation method comprises the following steps:
The raw material for forming each layer of the hot sealing layer is separately added into each layer extruder and carries out fusion plastification, extrusion, is then existed
Blow-up ratio is 1:4, and temperature carries out blown film under conditions of being 200 DEG C, then cooling through lower blowing water cold process, and three-layer extrusion film is made.
Plastic-aluminum combined sealed membrane described in the present embodiment the preparation method comprises the following steps:
It is printed on the surface of aluminium foil layer, to form character pattern layer, the dosage of ink is 2g/m2；The printing
Speed is 120m/min, and the temperature dried after printing is 100 DEG C；Gloss oil, the light are coated on the surface of the character pattern layer
The speed of oil coating is 120m/min, dry at 100 DEG C, obtains light oil reservoir；Binder is coated on another surface of aluminium foil layer,
Its dosage is 6g/m2, continuously successively it is dried by 55 DEG C, 65 DEG C and 70 DEG C three sections of baking ovens with the speed of 100m/min
Adhesive layer is obtained, then in the case where hot drum temperature is 65 DEG C, hot sealing layer and the adhesive layer hot pressing is combined with each other, obtained
Base film；The base film is cured at 70 DEG C, curing time 96h is to get the plastic-aluminum combined sealed membrane.
Embodiment 5
A kind of plastic-aluminum combined sealed membrane is formed with embodiment 3, the difference is that, in the present embodiment, to PET polyester
The speed that the surface of film is printed is 100m/min, and the temperature dried after printing is 40 DEG C.
Embodiment 6
A kind of plastic-aluminum combined sealed membrane is formed with embodiment 4, the difference is that, in the present embodiment, to aluminium foil layer
The speed that surface is printed is 40m/min, and the temperature dried after printing is 40 DEG C.
Comparative example 1
This comparative example provides a kind of plastic-aluminum combined sealed membrane, according to Chinese patent literature CN102700819A embodiment
1 method is prepared.
Comparative example 2
This comparative example provides a kind of plastic-aluminum combined sealed membrane, including protective layer 1, the barrier layer set gradually from top to bottom
2 and hot sealing layer 3, the thickness of each layer be respectively 6 μm, 20 μm and 30 μm.In this comparative example, the protective layer 1 is PET polyester film
Layer, the barrier layer 2 are aluminium foil layer, and the hot sealing layer 3 is by the high density polyethylene (HDPE) of 50wt%, the low density polyethylene of 10wt%
The metallocene linear low density polyethylene of alkene, the polybutene of 25wt% and 15wt% forms, high density polyethylene (HDPE), low density polyethylene
The fusing point of alkene, polybutene and metallocene linear low density polyethylene is not higher than 130 DEG C.As shown in Fig. 2, hot sealing layer 3 includes the
One polyethylene layer 31, the second polyethylene layer 32 and third polyethylene layer 33, third polyethylene layer 33 and Polypropylene bottle bottleneck
Directly contact.Wherein the first polyethylene layer 31 is by high density polyethylene (HDPE), low density polyethylene (LDPE) and the poly- second of metallocene linear low density
The weight ratio of alkene composition, three is 2:1:1, and the second polyethylene layer 32 is low by high density, low density polyethylene (LDPE) and metallocene linear
Density polyethylene composition, the weight ratio of three are 2:1:3, and third polyethylene layer 33 is by polybutene, high density polyethylene (HDPE) and low close
Polyethylene composition is spent, the weight ratio of three is 5:8:1.The preparation method is the same as that of Example 1 for plastic-aluminum combined sealed membrane in this comparative example.
Experimental example heat-seal bond power performance test
By in 1-6 of the embodiment of the present invention and comparative example 1,2 plastic-aluminum combined sealed membrane and crystalline p p sheet heat-sealing instrument on
It is sealed, control heat-sealing temperature is 210 DEG C, pressure 0.4MPa, and the heat-sealing time is 1 second, and after the completion of heat-sealing, heat-sealing is had aluminium
The crystalline p p sheet of modeling composite closure film cuts into the strip of wide 15mm, long 120mm, then tries in XML type smart electronics pulling force
It tests on machine (Jinan blue streak) and does 180 ° of peel tests, test result is as follows table 1:
1 heat-seal bond power the performance test results of table
By the data in upper table 1 it is found that the plastic-aluminum combined sealed membrane in 1-6 of the embodiment of the present invention and between crystalline p p sheet
Binding force generally between 13.1~17.2, it is seen that between plastic-aluminum combined sealed membrane and Polypropylene bottle bottleneck of the invention
Binding force distribution uniform, be easy to open, at the same also be not easy be open and lead to seal failure.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments, and it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of plastic-aluminum combined sealed membrane, including the protective layer (1), barrier layer (2) and hot sealing layer set gradually from top to bottom
(3), the protective layer (1) is light oil reservoir or PET laminated polyester film, and the barrier layer (2) is aluminium foil layer, which is characterized in that institute
State the component that hot sealing layer (3) includes following parts by weight: 50~55 parts of high density polyethylene (HDPE), gathers 10~15 parts of low density polyethylene (LDPE)
25~30 parts of butylene, 15~20 parts of ethylene propylene copolymer.
2. plastic-aluminum combined sealed membrane according to claim 1, which is characterized in that form each component of the hot sealing layer (3)
Fusing point is not higher than 130 DEG C.
3. plastic-aluminum combined sealed membrane according to claim 1 or 2, which is characterized in that the hot sealing layer (3) is three-layer co-extruded
Film, the first polyethylene layer (31), the second polyethylene layer (32) and third polyethylene layer including being successively bonded setting from top to bottom
(33), the raw material of first polyethylene layer (31) and the second polyethylene layer (32) is high density polyethylene (HDPE), low density polyethylene (LDPE)
And the mixture of ethylene propylene copolymer composition, the raw material of the third polyethylene layer (33) are polybutene, high density polyethylene (HDPE)
And the mixture of low density polyethylene (LDPE) composition.
4. plastic-aluminum combined sealed membrane according to claim 1-3, which is characterized in that when the protective layer (1) is
When light oil reservoir, the protective layer (1) with a thickness of 1~5 μm；When the protective layer (1) is PET laminated polyester film, the guarantor
Sheath (1) with a thickness of 6~20 μm；The barrier layer (2) with a thickness of 20~70 μm；The hot sealing layer (3) with a thickness of 30
~100 μm.
5. plastic-aluminum combined sealed membrane according to claim 1-4, which is characterized in that in the protective layer (1) and
Character pattern layer is additionally provided between the barrier layer (2).
6. a kind of preparation method of the described in any item plastic-aluminum combined sealed membranes of claim 1-5, which is characterized in that including as follows
Step:
When the protective layer (1) is light oil reservoir, gloss oil is coated on the surface of the barrier layer (2), it is dry, obtain light oil reservoir；
Binder is coated on another surface of the barrier layer (2), it is dry, make the binder in the barrier layer (2) surface cure
Form adhesive layer；At 50~80 DEG C, the hot sealing layer (3) and the adhesive layer hot pressing are combined with each other, base is obtained
Film；
When the protective layer (1) is PET laminated polyester film, binder is coated on the surface of the barrier layer (2), it is dry, make
The binder forms the first adhesive layer in the barrier layer (2) surface cure；At 50~80 DEG C, by the protective layer
(1) it is combined with each other with the first adhesive layer hot pressing；Binder is coated on another surface of the barrier layer (2), it is dry,
The binder is set to form the second adhesive layer in another surface cure of the barrier layer (2)；It, will be described at 50~80 DEG C
Hot sealing layer (3) is combined with each other with the second adhesive layer hot pressing, obtains base film；
The base film is cured at 55~70 DEG C, the curing time >=96h.
7. preparation method according to claim 6, which is characterized in that when the protective layer (1) is light oil reservoir, described
Before the surface coating gloss oil of barrier layer (2), first the barrier layer (2) is printed, forms character pattern layer；When the protection
When layer (1) is PET laminated polyester film, before carrying out hot pressing to the protective layer (1) and the barrier layer (2), first to the guarantor
Sheath (1) is printed on one side with the barrier layer (2) hot pressing, forms character pattern layer.
8. preparation method according to claim 7, which comprises the steps of:
When the protective layer (1) is light oil reservoir, printed on the surface of the barrier layer (2), to form character pattern layer；
The speed of the printing is 40~120m/min, and the temperature dried after printing is 40~100 DEG C；In the table of the character pattern layer
Face coats gloss oil, and the speed of the gloss oil coating is 40~120m/min, dry at 50~100 DEG C, obtains light oil reservoir；Institute
Another surface coating binder for stating barrier layer (2), carries out first at 50~80 DEG C and is dried, make the binder in institute
It states barrier layer (2) surface cure and forms adhesive layer, then at 50~80 DEG C, by the hot sealing layer (3) and the binder
Layer hot pressing is combined with each other, and obtains base film；
When the protective layer (1) is PET laminated polyester film, printed on the surface of the protective layer (1), to form text
Pattern layer；The speed of the printing is 100~220m/min, and the temperature dried after printing is 40~80 DEG C；In the text figure
The surface of pattern layer coats binder, and second is carried out at 70~90 DEG C and is dried, makes the binder in the barrier layer (2)
Surface cure forms the first adhesive layer；It is at 50~80 DEG C, the barrier layer (2) and the first adhesive layer hot pressing are multiple
It is combined；Binder is coated on another surface of the barrier layer (2), third drying process is carried out at 50~80 DEG C, is made
The binder forms the second adhesive layer in another surface cure of the barrier layer (2)；At 50~80 DEG C, by the heat
Sealing (3) is combined with each other with the second adhesive layer hot pressing, obtains base film；
The base film is cured at 55~70 DEG C, the curing time >=96h.
9. preparation method according to claim 8, which is characterized in that described first is dry dry including three sections of temperature, and one
Duan Wendu is 50~60 DEG C, and two sections of temperature are higher than described 5~10 DEG C of one section of temperature, three sections of temperature be higher than one section of temperature 10~
20℃；Described second is dry dry including three sections of temperature, and one section of temperature is 70~75 DEG C, and two sections of temperature are higher than one section of temperature
5~10 DEG C, three sections of temperature are higher than described 10~15 DEG C of one section of temperature；The dry third includes that three sections of temperature are dry, one section of temperature
Degree is 50~60 DEG C, and two sections of temperature are higher than described 5~10 DEG C of one section of temperature, and three sections of temperature are higher than one section of temperature 10~20
℃。
10. according to the described in any item preparation methods of claim 5-9, which is characterized in that the preparation of the hot sealing layer (3) includes
Following steps:
The raw material for forming the hot sealing layer (3) each layer is subjected to fusion plastification respectively, is squeezed out, blown film is then carried out, it is cooling, it obtains
The hot sealing layer (3).
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| CN201811191244.7A CN109291580B (en) | 2018-10-12 | 2018-10-12 | Aluminum-plastic composite sealing film and preparation method thereof |
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| CN111016359A (en) * | 2019-11-12 | 2020-04-17 | 福建富一锦科技有限公司 | PE low-temperature packaging film and preparation method and application thereof |
| CN114572557A (en) * | 2020-11-30 | 2022-06-03 | 内蒙古伊利实业集团股份有限公司 | Sealing film, cup containing sealing film and preparation method of cup |
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| CN114572557A (en) * | 2020-11-30 | 2022-06-03 | 内蒙古伊利实业集团股份有限公司 | Sealing film, cup containing sealing film and preparation method of cup |
| CN114572557B (en) * | 2020-11-30 | 2024-01-26 | 内蒙古伊利实业集团股份有限公司 | Sealing film, cup containing sealing film and preparation method of sealing film |
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| CN109291580B (en) | 2020-07-31 |
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