CN108794788A - A kind of flexible package and preparation method thereof - Google Patents
A kind of flexible package and preparation method thereof Download PDFInfo
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- CN108794788A CN108794788A CN201810468224.3A CN201810468224A CN108794788A CN 108794788 A CN108794788 A CN 108794788A CN 201810468224 A CN201810468224 A CN 201810468224A CN 108794788 A CN108794788 A CN 108794788A
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- lamination
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
- B29C41/30—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length incorporating preformed parts or layers, e.g. moulding around inserts or for coating articles
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/52—Measuring, controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
Abstract
A kind of flexible package of present invention offer and preparation method, the method includes：Tie layer resins are squeezed out by extrusion die between shell layer and encapsulated layer using the method for lamination, form adhesive layer, wherein the lamination extrusion temperature of the tie layer resins is 200 DEG C to 350 DEG C；It is combined with each other after forming composite construction in the tie layer resins and the shell layer and the encapsulated layer, cold treatment is carried out to the composite construction by metallic roll, the cold treatment temperature of the metallic roll is 0 DEG C to 100 DEG C；Composite construction after cold treatment is post-processed, the post-processing temperature of the metallic roll is 50 DEG C to 200 DEG C；Composite construction is wound, flexible package is formed.Using the embodiment of the present invention, a kind of very strong flexible package of splitting power suitable for power battery is provided, to use the reliable lithium ion battery of flexible package production safety.
Description
Technical field
The present invention relates to battery packages technical fields, more particularly to a kind of flexible package and preparation method thereof.
Background technology
In recent years with the development of new energy industry, hybrid power or pure electric automobile expose major exhibition again and again, gradually
Come into the public visual field and life.Hybrid power or pure electric automobile need to use battery, then the weight energy to battery is close
Degree and volume energy density increasingly higher demands, while the security test of battery is also more stringent, it is desirable that the packaging of battery
Not only will more frivolous but also performance it is more preferable.
A star packaging that frivolous flexible package becomes the active development of all kinds of lithium ion batteries and uses, compared to tradition
Metal hard shell body packaging, flexible package is not only light, thickness is small, but also flexible shapes are changeable, can meet more and more
Property and Diversified Products demand.However, it is flexible package to restrict one of the reason of comprehensive substituted metal hard shell of flexible package is packed
Safety and reliability has to be hoisted, is embodied in flexible package when encapsulating electrolyte for a long time easily that layering, material aging be even
Leakage etc..Traditional flexible package adhesive layer is by carrying out being coated to reheating compound seal after shell layer in organic solvent after dissolving
Layer, since organic solvent can not vapor away completely, remains in flexible package interlayer, and splitting can be deteriorated during long-time service,
Cause the electrolyte resistance performance of flexible package poor, and this complex process, cost are compared with high, environmental pollution is big.
In view of the above problems, it is necessary to study a kind of very strong flexible package of splitting power suitable for power battery, with
Just the reliable lithium ion battery of flexible package production safety is used.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of flexible package and its preparation sides
Method, it is desirable to provide a kind of very strong flexible package of splitting power suitable for power battery, to use flexible package production peace
Complete reliable lithium ion battery.
In order to achieve the above objects and other related objects, the present invention provides a kind of flexible package, and the flexible package includes：Shell
Layer, encapsulated layer and adhesive layer, the adhesive layer is arranged between the shell layer and the encapsulated layer, and the shell layer is close
One side surface of the adhesive layer is metal material：Aluminium and/or stainless steel；A side surface of the shell layer far from the adhesive layer
For high molecular material：Polyamide, polyethylene terephthalate, polyethylene naphthalate, poly terephthalic acid fourth two
It is one or more in alcohol ester, polyimides, polyester, polyolefin, improved polyalkene, thermosetting resin, light-cured resin；It is described
The material of encapsulated layer is：The material of polyolefin, improved polyalkene, polypropylene or modified polypropene, the tie layer resins includes：
Polyolefin or improved polyalkene.
In addition, to solve prior art problem, the invention also discloses a kind of flexible package preparation method, the method packets
It includes：
Tie layer resins are squeezed out by extrusion die between shell layer and encapsulated layer using the method for lamination, are formed viscous
Tie layer, wherein the lamination extrusion temperature of the tie layer resins is 200 DEG C to 350 DEG C；In the tie layer resins and the shell
Body layer and the encapsulated layer are combined with each other after forming composite construction, and cold treatment is carried out to the composite construction by metallic roll,
The cold treatment temperature of the metallic roll is 0 DEG C to 100 DEG C；Composite construction after cold treatment is post-processed, the metallic roll
Post-processing temperature be 50 DEG C to 200 DEG C；Composite construction is wound, flexible package is formed.
In the preferred embodiment of the present invention, the lamination temperature is 250 DEG C to 330 DEG C.
In the preferred embodiment of the present invention, the cold treatment temperature of the metallic roll is 10 DEG C~70 DEG C.
In the preferred embodiment of the present invention, the post-processing temperature of the metallic roll is 80 DEG C to 150 DEG C.
In the preferred embodiment of the present invention, the material of the tie layer resins includes：Polyolefin or improved polyalkene.
In the preferred embodiment of the present invention, the lamination extruded velocity, the cold treatment film speed of the metallic roll, the gold
The post-processing film speed for belonging to roller is 10m/min to 200m/min.
In the preferred embodiment of the present invention, the lamination extruded velocity, the cold treatment film speed of the metallic roll, the gold
The post-processing film speed for belonging to roller is 50m/min to 150m/min.
In the preferred embodiment of the present invention, the shell layer is metal material, tool close to one side surface of the adhesive layer
Body is aluminium and/or stainless steel；A side surface of the shell layer far from the adhesive layer is high molecular material, is polyamide, poly-
Ethylene glycol terephthalate, polyethylene naphthalate, polybutylene terephthalate (PBT), polyimides, polyester, polyene
It is one or more in hydrocarbon, improved polyalkene, thermosetting resin, light-cured resin.
In the preferred embodiment of the present invention, the material of the encapsulated layer is：Polyolefin, improved polyalkene, polypropylene or
Modified polypropene.
In the preferred embodiment of the present invention, the method using lamination squeezes out tie layer resins by extrusion die
The step of between shell layer and encapsulated layer, including：Tie layer resins and encapsulated layer resin are passed through using the method for lamination double
Die head squeezes out in shell layer surface simultaneously, forms the shell layer of flexible package, and viscous between shell layer and encapsulation layer by layer
Tie layer.
As described above, a kind of flexible package and preparation method thereof of the present invention, has the advantages that：
(1) flexible package of the present invention can also use and shell layer film is placed in the side of extrusion die, adhesive linkage resin and
Encapsulated layer resin is expressed by lamination on shell layer film in temperature setting range respectively, shell layer it is adjacent be bonding
Layer, the adhesive linkage side opposite with shell layer is encapsulated layer, and then process is compound, cold treatment, post-processes and is wound into flexible package.
(2) film speed rationally, is easy to form a film uneven, splitting declines, film if film speed is too fast in the embodiment of the present invention
Speed then not only influences production efficiency very much slowly, but also is easy to keep cold treatment and finishing time too long, influence the appearance of flexible package with
Performance.
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this explanations by particular specific embodiment below
Content disclosed by book understands other advantages and effect of the present invention easily.
It should be clear that the term of such as "upper", "lower", "left", "right", " centre " and " one " cited in this specification, also
Only being illustrated for ease of narration, rather than to limit the scope of the invention, relativeness is altered or modified, in nothing
Under essence change technology contents, when being also considered as the enforceable scope of the present invention.
Embodiment 1：
A kind of flexible package preparation method, method include：Tie layer resins are squeezed by extrusion die using the method for lamination
Go out between shell layer and encapsulated layer, form adhesive layer, wherein the lamination extrusion temperature of tie layer resins is 250 DEG C, wherein
Shell layer is aluminium close to one side surface of the adhesive layer, and a side surface of the shell layer far from the adhesive layer is polyurethane,
Encapsulated layer is modified polypropene, is bonded the maleic anhydride modified polypropylene of layer material；In tie layer resins and shell layer and encapsulated layer
It is combined with each other after forming composite construction, cold treatment is carried out to composite construction by metallic roll, the cold treatment temperature of metallic roll is
20℃；Composite construction after cold treatment is post-processed, the post-processing temperature of metallic roll is 60 DEG C；Composite construction is received
Volume forms flexible package, wherein the lamination extruded velocity, the metallic roll cold treatment film speed, the metallic roll post-processing
Film speed is 50m/min.
Embodiment 2：
A kind of flexible package preparation method, method include：Tie layer resins are squeezed by extrusion die using the method for lamination
Go out between shell layer and encapsulated layer, form adhesive layer, wherein the lamination extrusion temperature of tie layer resins is 300 DEG C, wherein
Shell layer is aluminium close to one side surface of the adhesive layer, and a side surface of the shell layer far from the adhesive layer is polyurethane,
Encapsulated layer is modified polypropene, is bonded the maleic anhydride modified polypropylene of layer material；In tie layer resins and shell layer and encapsulated layer
It is combined with each other after forming composite construction, cold treatment is carried out to composite construction by metallic roll, the cold treatment temperature of metallic roll is
50℃；Composite construction after cold treatment is post-processed, the post-processing temperature of metallic roll is 120 DEG C；Composite construction is carried out
Winding forms flexible package, wherein the lamination extruded velocity, the cold treatment film speed of the metallic roll, the metallic roll rear place
Reason film speed is 50m/min.
Embodiment 3：
A kind of flexible package preparation method, method include：Tie layer resins are squeezed by extrusion die using the method for lamination
Go out between shell layer and encapsulated layer, form adhesive layer, wherein the lamination extrusion temperature of tie layer resins is 310 DEG C, wherein
Shell layer is aluminium close to one side surface of the adhesive layer, and a side surface of the shell layer far from the adhesive layer is polyurethane,
Encapsulated layer is modified polypropene, is bonded the maleic anhydride modified polypropylene of layer material；In tie layer resins and shell layer and encapsulated layer
It is combined with each other after forming composite construction, cold treatment is carried out to composite construction by metallic roll, the cold treatment temperature of metallic roll is
60℃；Composite construction after cold treatment is post-processed, the post-processing temperature of metallic roll is 120 DEG C；Composite construction is carried out
Winding forms flexible package, wherein the lamination extruded velocity, the cold treatment film speed of the metallic roll, the metallic roll rear place
Reason film speed is 50m/min.
Embodiment 4：
A kind of flexible package preparation method, method include：Tie layer resins are squeezed by extrusion die using the method for lamination
Go out between shell layer and encapsulated layer, form adhesive layer, wherein the lamination extrusion temperature of tie layer resins is 310 DEG C, wherein
Shell layer is aluminium close to one side surface of the adhesive layer, and a side surface of the shell layer far from the adhesive layer is poly- to benzene two
Formic acid glycol ester, encapsulated layer are modified polypropene, are bonded the maleic anhydride modified polypropylene of layer material；In tie layer resins and shell
Body layer and encapsulated layer are combined with each other to form composite construction after, by metallic roll to composite construction carry out cold treatment, metallic roll
Cold treatment temperature is 60 DEG C；Composite construction after cold treatment is post-processed, the post-processing temperature of metallic roll is 120 DEG C；It is right
Composite construction is wound, and flexible package is formed, wherein the lamination extruded velocity, the cold treatment film of the metallic roll are fast, described
The post-processing film speed of metallic roll is 50m/min.
Embodiment 5：
A kind of flexible package preparation method, method include：Tie layer resins are squeezed by extrusion die using the method for lamination
Go out between shell layer and encapsulated layer, form adhesive layer, wherein the lamination extrusion temperature of tie layer resins is 310 DEG C, wherein
Shell layer is aluminium close to one side surface of the adhesive layer, and a side surface of the shell layer far from the adhesive layer is poly- to benzene two
Formic acid glycol ester, encapsulated layer are polypropylene, are bonded the maleic anhydride modified polypropylene of layer material；In tie layer resins and shell layer
It is combined with each other with encapsulated layer after forming composite construction, cold treatment, the cold place of metallic roll is carried out to composite construction by metallic roll
It is 60 DEG C to manage temperature；Composite construction after cold treatment is post-processed, the post-processing temperature of metallic roll is 120 DEG C；To compound
Structure is wound, and flexible package is formed, wherein the lamination extruded velocity, the cold treatment film speed of the metallic roll, the metal
The post-processing film speed of roller is 50m/min.
Embodiment 6：
A kind of flexible package preparation method, method include：Tie layer resins are squeezed by extrusion die using the method for lamination
Go out between shell layer and encapsulated layer, form adhesive layer, wherein the lamination extrusion temperature of tie layer resins is 310 DEG C, wherein
Shell layer is stainless steel close to one side surface of the adhesive layer, and a side surface of the shell layer far from the adhesive layer is poly- ammonia
Ester, encapsulated layer are polypropylene, are bonded the maleic anhydride modified polypropylene of layer material；It is multiple in tie layer resins and shell layer and encapsulated layer
It is combined after forming composite construction, cold treatment is carried out to composite construction by metallic roll, the cold treatment temperature of metallic roll is 60
℃；Composite construction after cold treatment is post-processed, the post-processing temperature of metallic roll is 120 DEG C；Composite construction is received
Volume forms flexible package, wherein the lamination extruded velocity, the metallic roll cold treatment film speed, the metallic roll post-processing
Film speed is 50m/min.
Embodiment 7：
A kind of flexible package preparation method, method include：Tie layer resins are squeezed by extrusion die using the method for lamination
Go out between shell layer and encapsulated layer, form adhesive layer, wherein the lamination extrusion temperature of tie layer resins is 310 DEG C, wherein
Shell layer is aluminium close to one side surface of the adhesive layer, and a side surface of the shell layer far from the adhesive layer is polyurethane,
Encapsulated layer is polypropylene, is bonded the maleic anhydride modified polypropylene of layer material；It is compound in tie layer resins and shell layer and encapsulated layer
After forming composite construction together, cold treatment is carried out to composite construction by metallic roll, the cold treatment temperature of metallic roll is 60 DEG C；
Composite construction after cold treatment is post-processed, the post-processing temperature of metallic roll is 120 DEG C；Composite construction is wound,
Form flexible package, wherein the lamination extruded velocity, the cold treatment film speed of the metallic roll, the metallic roll post-processing film
Speed is 100m/min.
Embodiment 8：
A kind of flexible package preparation method, method include：Tie layer resins are squeezed by extrusion die using the method for lamination
Go out between shell layer and encapsulated layer, form adhesive layer, wherein the lamination extrusion temperature of tie layer resins is 310 DEG C, wherein
Shell layer is aluminium close to one side surface of the adhesive layer, and a side surface of the shell layer far from the adhesive layer is polyurethane,
Encapsulated layer is polypropylene, is bonded the maleic anhydride modified polypropylene of layer material；It will be bonded layer material maleic anhydride modified poly- third respectively
Alkene and encapsulation layer material polypropylene are expressed at 310 DEG C in the aluminium surface of shell layer；In tie layer resins and shell layer and envelope
After dress layer is combined with each other and to form composite construction, cold treatment, the cold treatment temperature of metallic roll are carried out to composite construction by metallic roll
Degree is 60 DEG C；Composite construction after cold treatment is post-processed, the post-processing temperature of metallic roll is 120 DEG C；To composite construction
It is wound, forms flexible package, wherein the lamination extruded velocity, the cold treatment film speed of the metallic roll, the metallic roll
Post-processing film speed is 100m/min.
Comparative example：
This comparative example uses the flexible package of the prior art：Shell layer includes polyurethane and aluminium, and encapsulated layer is modified polypropene,
Preparation method is that will be bonded the maleic anhydride modified polypropylene dissolving of layer material to be coated in the aluminium surface of shell layer in acetone, is done
Flexible package is formed by encapsulated layer is be bonded with adhesive linkage by the way that heat is compound after dry.
Embodiment and comparative example test result is evaluated：
1) shell layer and encapsulated layer peeling force：Flexible package is made to the batten of 15mm wide 20cm long, by shell layer and encapsulation
It after layer peels off one section, is clipped in respectively in the fixture up and down of universal tensile testing machine, 180 ° of stripping is carried out with the speed of 30cm/min
From test 10cm, Average peel force is recorded；
2) layering number is scraped：Continuously scrape the section of flexible package back and forth with blade, one bobs and is denoted as 1 time, until
There is lamination in flexible package section, records number；
3) whether electrolyte is layered after impregnating：The sample that flexible package is made to 5cm*5cm immerses in electrolyte, 85 DEG C of 6H
It is taken out after 2% relative humidity conditions, whether observation flexible package is layered
4) peeling force after electrolyte impregnates：The batten that flexible package is made to 15mm wide 20cm long immerses in electrolyte, 85 DEG C
It is taken out after the relative humidity conditions of 6H 2%, after shell layer and encapsulated layer are peeled off one section, is clipped in universal tensile testing machine respectively
Fixture up and down in, 180 ° of peel test 10cm is carried out with the speed of 30cm/min, records Average peel force；
Comparative example and the test evaluation result of embodiment 1-8 are as shown in table 1 below.
Table 1
Comparative example is compound with encapsulated layer heat using being coated to after shell layer after organic solvent dissolving adhesive linkage resin again
Flexible package prepared by technique, splitting power are 12N/15mm, scrape layering 20 secondary clearing of number, and electrolyte is layered after impregnating, says
The bright comparative example flexible package not electrolyte resistance；Embodiment 1 using adhesive linkage resin is squeezed out at 250 DEG C lamination to shell layer with
Between encapsulated layer, it is compound after cold treatment temperature be 20 DEG C, post-processing temperature be 60 DEG C, the flexible package peeling force 18N/ of preparation
15mm, scrapes layering number 29 times, and electrolyte is not layered after impregnating, and splitting power falls to 8N/15mm. after electrode also starves immersion
Compared with comparative example, embodiment 1 uses the flexible package and preparation method thereof of the present invention, and splitting and electrolyte resistance etc. are every
Performance is better than comparative example.
Embodiment 2 and embodiment 3 are the flexible package and preparation method thereof of the present invention, with embodiment 1 compare its basal temperature,
Cold treatment and post-processing temperature are in preferred scope, and splitting is promoted than embodiment 1 with layering number is scraped, electricity
Peeling force after liquid impregnates is solved also to be promoted to 11N/15mm by 8N/15mm；The difference of 4~embodiment of embodiment 6 is within the scope of the present invention
The material of shell layer and encapsulated layer is replaced, the evaluation and test effect of flexible package is obviously improved than comparative example and embodiment 1；Implement
The flexible package that example 7 uses prepares film speed as 100m/min, and the effect of prepared flexible package and previous embodiment is in same water
It is flat；Embodiment 8 is arranged by the way of being to squeeze out lamination by adhesive linkage resin and encapsulated layer resin in shell layer, in this hair
In bright parameter area, splitting and electrolyte resistance the performance performance of prepared flexible package are excellent.
The present invention provides a kind of flexible package, and flexible package includes：Shell layer, encapsulated layer and adhesive layer, adhesive layer are arranged in shell
Between body layer and encapsulated layer, and shell layer is metal material, specially aluminium and/or stainless steel close to one side surface of adhesive layer；Shell
A side surface of the body layer far from adhesive layer is high molecular material, is polyamide, polyethylene terephthalate, poly- naphthalenedicarboxylic acid
Glycol ester, polybutylene terephthalate (PBT), polyimides, polyester, polyolefin, improved polyalkene, thermosetting resin, light are solid
Change one or more in resin；The material of encapsulated layer is：Polyolefin, improved polyalkene, polypropylene or modified polypropene bond
Layer resin material include：Polyolefin or improved polyalkene.
In conclusion a kind of flexible package of the present invention and preparation method thereof, flexible package of the present invention can also be used shell layer
Film is placed in the side of extrusion die, and adhesive linkage resin and encapsulated layer resin are squeezed out in temperature setting range by lamination respectively
Onto shell layer film, shell layer it is adjacent be adhesive linkage, the adhesive linkage side opposite with shell layer is encapsulated layer, is then passed through
Compound, cold treatment post-processes and is wound into flexible package, from above-described embodiment it can be seen that flexible package interlayer provided by the invention is shelled
From power compared with the existing technology relatively strong.So the present invention effectively overcomes various shortcoming in the prior art and has height and produce
Industry utility value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (11)
1. a kind of flexible package, which is characterized in that the flexible package includes：Shell layer, encapsulated layer and adhesive layer, the adhesive layer are set
It sets between the shell layer and the encapsulated layer, and the shell layer is aluminium and/or not close to one side surface of the adhesive layer
Become rusty Steel material；A side surface of the shell layer far from the adhesive layer is high molecular material：Polyamide, poly terephthalic acid second
Diol ester, polyethylene naphthalate, polybutylene terephthalate (PBT), polyimides, polyester, polyolefin, modified polyolefin
It is one or more in hydrocarbon, thermosetting resin, light-cured resin；The material of the encapsulated layer is：Polyolefin, improved polyalkene,
The material of polypropylene or modified polypropene, the tie layer resins includes：Polyolefin or improved polyalkene.
2. a kind of flexible package preparation method, which is characterized in that the method includes：
Tie layer resins are squeezed out by extrusion die between shell layer and encapsulated layer using the method for lamination, is formed and is bonded
Layer, wherein the lamination extrusion temperature of the tie layer resins is 200 DEG C to 350 DEG C；
It is combined with each other after forming composite construction in the tie layer resins and the shell layer and the encapsulated layer, passes through metal
Roller carries out cold treatment to the composite construction, and the cold treatment temperature of the metallic roll is 0 DEG C to 100 DEG C；
Composite construction after cold treatment is post-processed, the post-processing temperature of the metallic roll is 50 DEG C to 200 DEG C；
Composite construction is wound, flexible package is formed.
3. flexible package preparation method according to claim 2, which is characterized in that the lamination temperature is 250 DEG C to 330
℃。
4. flexible package preparation method according to claim 2 or 3, which is characterized in that the cold treatment temperature of the metallic roll
It is 10 DEG C~70 DEG C.
5. flexible package preparation method according to claim 4, which is characterized in that the post-processing temperature of the metallic roll is 80
DEG C to 150 DEG C.
6. flexible package preparation method according to claim 4, which is characterized in that the material of the tie layer resins includes：
Polyolefin or improved polyalkene.
7. flexible package preparation method according to claim 4, which is characterized in that the lamination extruded velocity, the metal
Cold treatment film speed, the post-processing film speed of the metallic roll of roller are 10m/min to 200m/min.
8. flexible package preparation method according to claim 7, which is characterized in that the lamination extruded velocity, the metal
Cold treatment film speed, the post-processing film speed of the metallic roll of roller are 50m/min to 150m/min.
9. flexible package preparation method according to claim 2, which is characterized in that the shell layer is close to the adhesive layer one
Side surface is metal material, specially aluminium and/or stainless steel；A side surface of the shell layer far from the adhesive layer is high score
Sub- material, be polyamide, polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate (PBT),
It is one or more in polyimides, polyester, polyolefin, improved polyalkene, thermosetting resin, light-cured resin.
10. flexible package preparation method according to claim 2, which is characterized in that the material of the encapsulated layer is：Polyene
Hydrocarbon, improved polyalkene, polypropylene or modified polypropene.
11. flexible package preparation method according to claim 2, which is characterized in that the method using lamination will bond
The step of layer resin is squeezed out by extrusion die between shell layer and encapsulated layer, including：
Tie layer resins and encapsulated layer resin are squeezed out in shell layer surface simultaneously by Double-mold-head using the method for lamination, shape
Adhesive layer at the shell layer of flexible package, and between shell layer and encapsulation layer by layer.
Priority Applications (1)
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