CN108582807A - A kind of preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane - Google Patents
A kind of preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane Download PDFInfo
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- CN108582807A CN108582807A CN201810248694.9A CN201810248694A CN108582807A CN 108582807 A CN108582807 A CN 108582807A CN 201810248694 A CN201810248694 A CN 201810248694A CN 108582807 A CN108582807 A CN 108582807A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0021—Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
- B29C48/155—Partial coating thereof
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
- B29C65/521—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive by spin coating
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
- B29C66/7422—Aluminium or alloys of aluminium
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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
- B32B15/088—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 polyamides
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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
- B32B15/09—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
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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
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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
-
- 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
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- 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
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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
- 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
- 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
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- 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
- B29L2009/003—Layered products comprising a metal layer
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- 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
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/06—Coating on the layer surface on metal layer
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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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
- B32B2457/00—Electrical equipment
- B32B2457/10—Batteries
Abstract
The present invention provides a kind of preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane, including：The preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane first carries out degreasing pretreatment to raw material aluminium foil, is prepared subsequently into second step.First one side progress lamination technique carries out drenching multiple operation wherein, leaching restores material and uses the materials such as modified polypropene, it is stretched that polyacrylic crystalline orientation is controlled, then pass through intaglio plate coating, in the solvent-free adhesive of other coated on one side of aluminium foil, then compound with the progress of the composite membrane of polyamide film, pet film one of which or both, drying chamber is entered after batching and is cured.This method effectively reduces the triviality and external interference factor of operation, has saved production cost, improves production quality.
Description
Technical field
The invention belongs to lithium battery industry technology fields, and in particular to a kind of encapsulation of soft package lithium battery shell is with plastic-aluminum combined
The preparation method of film.
Background technology
With the demand for development of mobile or middle-size and small-size energy storage device, the especially dynamic lithium battery to various shapes state
Application development requirement and manufacture soft package lithium battery constantly in the demand for expanding soft package lithium battery, needed for shell package material
The amount of material aluminum-plastic composite membrane is improving always, and existing production technology is essentially divided into several steps, is carried out before this to aluminium foil
Processing, then again with different process means composite skins films, then composite inner layer film again.Entire production stage gets off,
Raw material expends big, and state of the whole flow process aluminium foil for a long time in expansion stress, is susceptible to stretching, gauffer etc. and cause
The problem of existing high rejection rate.
Invention content
The technical problem to be solved in the present invention is to provide a kind of preparations of soft package lithium battery shell encapsulation aluminum-plastic composite membrane
Method solves the problems, such as that the technique that two sides is compound inside and outside aluminum-plastic composite membrane is cumbersome high with production cost, and can solve because substep is raw
Production and caused by the problems such as producing line is long, takes up a large area, and quality caused by multiple retractable volume is unstable, and consumption of raw materials is big.
In order to solve the above technical problems, the present invention provides a kind of preparation of soft package lithium battery shell encapsulation aluminum-plastic composite membrane
Method, including step：
(1) production pretreatment：Alloy aluminium foil is sent in oil removing rinse bath and cleans oil removing, is then dried, as isolation
Layer is spare；
The multiple operation of (2) first faces leaching：The isolation layer is sent to leaching from unreeling structure to answer a pager's call structure, by heat-sealable material institute
The screw extruder extruding for drenching structure of answering a pager's call is stated, and is squeezed out from the die head of screw extruder, then lamination to the isolation layer
First face forms the compound semi-finished product of isolation layer-hot sealing layer；
(3) the crystalline orientation control of inner layer of polypropylene：By there are no completely cooling isolation layer-hot sealing layer is compound after lamination
Semi-finished product are delivered to drawing mechanism progress crystalline orientation control from the structure of answering a pager's call that drenches；
(4) second faces are coated with：The compound semi-finished product of isolation layer-hot sealing layer are delivered to coating mechanism from the drawing mechanism,
It is coated with solvent-free adhesive in the second face of isolation layer, forms adhesive layer-compound semi-finished product of isolation layer-hot sealing layer；
(5) composite molding：Reinforcement material is unreeled into expansion in unwinding rack, is delivered to composite structure, and with after drying
The compound semi-finished product progress of adhesive layer-isolation layer-hot sealing layer is online compound, is then sent to the winding of finished product rolling frame, followed by aging,
Complete manufacture.
A kind of preferred side of preparation method as soft package lithium battery shell encapsulation aluminum-plastic composite membrane of the present invention
Case, the thickness of alloy aluminium foil described in step (1) are 35 μm -50 μm.
It is preferred as a kind of one kind of the preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane of the present invention
Scheme, heat-sealable material described in step (2) are any one in graft modification polypropylene pellet, Grafted Polyethylene pellet
Kind, the thickness that the heat-sealable material is squeezed out from the die head of screw extruder is at 30 μm -90 μm.
A kind of preferred side of preparation method as soft package lithium battery shell encapsulation aluminum-plastic composite membrane of the present invention
Case, the temperature that screw extruder in structure of answering a pager's call is drenched described in step (2) are 250 DEG C -280 DEG C.
A kind of preferred side of preparation method as soft package lithium battery shell encapsulation aluminum-plastic composite membrane of the present invention
Case, the operating temperature of drawing mechanism described in step (3) are 38 DEG C -70 DEG C, tensile stress 2000N-4000N.
A kind of preferred side of preparation method as soft package lithium battery shell encapsulation aluminum-plastic composite membrane of the present invention
Case, coating mechanism described in step (4) are intaglio plate coating mechanism.
A kind of preferred side of preparation method as soft package lithium battery shell encapsulation aluminum-plastic composite membrane of the present invention
Case, solvent-free adhesive described in step (4) are adhesive for polyurethane or epoxy resin adhesive.
A kind of preferred side of preparation method as soft package lithium battery shell encapsulation aluminum-plastic composite membrane of the present invention
Case, the thickness of reinforcement material described in step (5) are 14 μm -30 μm, and the reinforcement material is polyamide film, gathers to benzene
The composite membrane of any one or two kinds in naphthalate film.
A kind of preferred side of preparation method as soft package lithium battery shell encapsulation aluminum-plastic composite membrane of the present invention
Case, the combined temp of composite structure described in step (5) are 75 DEG C -105 DEG C, composite pressure 3MPa-8MPa.
A kind of preferred side of preparation method as soft package lithium battery shell encapsulation aluminum-plastic composite membrane of the present invention
The speed of production of case, the entire producing line of step (1)-step (5) is 10m/min-70m/min.
Compared with prior art, the preparation side of a kind of soft package lithium battery shell encapsulation aluminum-plastic composite membrane proposed by the present invention
Method, it is heavy to solve aluminum-plastic composite membrane process in preparation process, the big problem of consumption of raw materials amount, and due to aluminium foil original
The retractable volume number of material tails off, and the overall length that unreels tails off, and reduces aluminium foil and unreels after tiling because machining accuracy etc. is each
Fold caused by aspect reason is stretched, is scratched, to improve the yields of product.Solvent-free gluing is used in compound working procedure
Agent then no longer needs to prepare solvent, reduces environmental pollution, and without being dried using baking oven, drastically reduce energy consumption.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without having to pay creative labor, it can also be obtained according to these attached drawings other
Attached drawing.Wherein,
Fig. 1 is that a kind of technological process of the preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane of the present invention is shown
It is intended to.
Wherein：1 be unreeling structure, 2 be leaching answer a pager's call structure, 3 be drawing mechanism, 4 be intaglio plate coating mechanism, 5 be unwinding rack, 6
It is rolling frame for composite structure, 7.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, With reference to embodiment
The present invention is described in further detail.
First, " one embodiment " or " embodiment " referred to herein refers to that may be included at least one realization side of the present invention
A particular feature, structure, or characteristic in formula." in one embodiment " that different places occur in the present specification not refers both to
The same embodiment, nor the individual or selective embodiment mutually exclusive with other embodiment.
Secondly, the present invention is described in detail using structural schematic diagram etc., when describing the embodiments of the present invention, for ease of saying
It is bright, indicate that a kind of schematic diagram of the preparation method structure of soft package lithium battery shell encapsulation aluminum-plastic composite membrane can disobey general proportion
Make partial enlargement, and the schematic diagram is example, the scope of protection of the invention should not be limited herein.In addition, in reality
In making should include length, width and depth three dimensions.
A kind of preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane of the present invention, step are：
Production pretreatment：The alloy aluminium foil of 35 μm -50 μm of the raw material of aluminum-plastic composite membrane is sent in oil removing rinse bath clearly
Oil is removed, is then dried, to reach the impurity removed raw material and may carried, ensures the purpose of raw material surface absolute cleanliness；
The multiple operation of first face leaching：The raw alloy aluminium foil of aluminum-plastic composite membrane is sent to leaching from unreeling structure 1 to answer a pager's call structure 2,
Modified polypropene pellet is squeezed out with screw extruder, is squeezed out from die head, and extrusion temperature is 250 DEG C -280 DEG C, squeezes out thickness control
System is at 30 μm -90 μm, in aluminium foil surface lamination.The step can cover polypropylene film in aluminium foil raw material overlying, complete isolation layer-
The manufacture of hot sealing layer structure；
The crystalline orientation of inner layer of polypropylene controls：There are no completely cooling alloy aluminium foil-polypropylene film is multiple after lamination
Close semi-finished product from leaching answer a pager's call structure 2 be delivered to drawing mechanism 3 carry out crystalline orientation control.The operating temperature of drawing mechanism be 38 DEG C-
70 DEG C, tensile stress 2000N-4000N.Using certain tension and temperature, polypropylene film can be changed in aluminium foil raw material
The orientation of upper crystallization is intended to isotropism from anisotropy；
Second face is coated with：Alloy aluminium foil-compound semi-finished product of polypropylene film are delivered to intaglio plate coating mechanism from drawing mechanism 3
4, it is coated with solvent-free adhesive on its surface, aluminium foil raw material is enable to be bonded with other films.
Composite molding：By integral thickness be 14 μm -30 μm polyamide film, pet film its
The composite membrane of middle one or both unreels expansion in unwinding rack 5, is delivered to composite structure 6 and is coated with polyurethane gluing with after drying
The alloy aluminium foil of agent-polypropylene film semi-finished product progress is online compound, and combined temp is 75 DEG C -105 DEG C, and composite pressure is
3MPa-8MPa is then sent to the winding of finished product rolling frame 7, and the speed of production of entire producing line is 10m/min-70m/min.Then
Curing, curing temperature are 50 DEG C -90 DEG C, curing time 48h-96h, complete manufacture.
Specific implementation mode refers to following embodiment 1-3：
Embodiment 1
Production pretreatment：The alloy aluminium foil of 35 μm of the raw material of aluminum-plastic composite membrane is sent to cleaning in oil removing rinse bath to remove
Then oil is dried；
The multiple operation of first face leaching：The raw alloy aluminium foil of aluminum-plastic composite membrane is sent to leaching from unreeling structure 1 to answer a pager's call structure 2,
Graft modification polypropylene pellet is squeezed with screw extruder, and is squeezed out from die head, and extrusion temperature is 250 DEG C, squeezes out thickness control
System is at 30 μm, in aluminium foil surface lamination；
The crystalline orientation of inner layer of polypropylene controls：There are no completely cooling alloy aluminium foil-polypropylene film is multiple after lamination
Semi-finished product to be closed to be delivered to drawing mechanism 3 from leaching structure 2 of answering a pager's call and carry out crystalline orientation control, the operating temperature of drawing mechanism is 55 DEG C,
Tension is 3000N；
Second face is coated with：Alloy aluminium foil-compound semi-finished product of polypropylene film are delivered to intaglio plate coating mechanism from drawing mechanism 3
4, it is coated with solvent-free adhesive, the D-100 of such as smart bright science and technology production of mail transfer on its surface.
Composite molding：The polyamide film that integral thickness is 14 μm is unreeled into expansion in unwinding rack 5, is delivered to composite structure
6 is online compound with the alloy aluminium foil for being coated with adhesive for polyurethane after drying-polypropylene film semi-finished product progress, and combined temp is
80 DEG C, composite pressure 4MPa, it is then sent to the winding of finished product rolling frame 7, the speed of production of entire producing line is 10m/min, so
Post curing, curing temperature are 80 DEG C, curing time 48h, complete manufacture.
Embodiment 2
Production pretreatment：The alloy aluminium foil of 40 μm of the raw material of aluminum-plastic composite membrane is sent to cleaning in oil removing rinse bath to remove
Then oil is dried；
The multiple operation of first face leaching：The raw alloy aluminium foil of aluminum-plastic composite membrane is sent to leaching from unreeling structure 1 to answer a pager's call structure 2,
Graft modification polypropylene pellet is squeezed out with screw extruder, is squeezed out from die head, and extrusion temperature is 260 DEG C, squeezes out thickness control
At 46 μm, in aluminium foil surface lamination；
The crystalline orientation of inner layer of polypropylene controls：There are no completely cooling alloy aluminium foil-polypropylene film is multiple after lamination
Semi-finished product to be closed to be delivered to drawing mechanism 3 from leaching structure 2 of answering a pager's call and carry out crystalline orientation control, the operating temperature of drawing mechanism is 55 DEG C,
Tension is 3000N；
Second face is coated with：Alloy aluminium foil-compound semi-finished product of polypropylene film are delivered to intaglio plate coating mechanism from drawing mechanism 3
4, it is coated with solvent-free adhesive, the D-100 of such as smart bright science and technology production of mail transfer on its surface.
Composite molding：The polyamide film that integral thickness is 25 μm is unreeled into expansion in unwinding rack 5, is delivered to composite structure
6 is online compound with the alloy aluminium foil for being coated with adhesive for polyurethane after drying-polypropylene film semi-finished product progress, and combined temp is
80 DEG C, composite pressure 5MPa, it is then sent to the winding of finished product rolling frame 7, the speed of production of entire producing line is 20m/min, so
Post curing, curing temperature are 80 DEG C, curing time 48h, complete manufacture.
Embodiment 3
Production pretreatment：The alloy aluminium foil of 50 μm of the raw material of aluminum-plastic composite membrane is sent to cleaning in oil removing rinse bath to remove
Then oil is dried；
The multiple operation of first face leaching：The raw alloy aluminium foil of aluminum-plastic composite membrane is sent to leaching from unreeling structure 1 to answer a pager's call structure 2,
Graft modification polypropylene pellet is squeezed out with screw extruder, is squeezed out from die head, and extrusion temperature is 265 DEG C, squeezes out thickness control
At 90 μm, in aluminium foil surface lamination；
The crystalline orientation of inner layer of polypropylene controls：There are no completely cooling alloy aluminium foil-polypropylene film is multiple after lamination
Semi-finished product to be closed to be delivered to drawing mechanism 3 from leaching structure 2 of answering a pager's call and carry out crystalline orientation control, the operating temperature of drawing mechanism is 60 DEG C,
Tension is 2500N；
Second face is coated with：Alloy aluminium foil-compound semi-finished product of polypropylene film are delivered to intaglio plate coating mechanism from drawing mechanism 3
4, it is coated with solvent-free adhesive, the D-100 of such as smart bright science and technology production of mail transfer on its surface.
Composite molding：The pet film that integral thickness is 30 μm is unreeled into expansion in unwinding rack 5,
Composite structure 6 is delivered to carry out online with the alloy aluminium foil for being coated with adhesive for polyurethane-polypropylene film semi-finished product after drying
Compound, combined temp is 90 DEG C, composite pressure 4MPa, is then sent to the winding of finished product rolling frame 7, the production speed of entire producing line
Degree is 70m/min, followed by aging, and curing temperature is 80 DEG C, curing time 48h, completes manufacture.
Embodiment 4
Production pretreatment：The alloy aluminium foil of 40 μm of the raw material of aluminum-plastic composite membrane is sent to cleaning in oil removing rinse bath to remove
Then oil is dried；
The multiple operation of first face leaching：The raw alloy aluminium foil of aluminum-plastic composite membrane is sent to leaching from unreeling structure 1 to answer a pager's call structure 2,
Graft modification polypropylene pellet is squeezed out with screw extruder, is squeezed out from die head, and extrusion temperature is 260 DEG C, squeezes out thickness control
At 88 μm, in aluminium foil surface lamination；
The crystalline orientation of inner layer of polypropylene controls：There are no completely cooling alloy aluminium foil-polypropylene film is multiple after lamination
Semi-finished product to be closed to be delivered to drawing mechanism 3 from leaching structure 2 of answering a pager's call and carry out crystalline orientation control, the operating temperature of drawing mechanism is 60 DEG C,
Tension is 2500N；
Second face is coated with：Alloy aluminium foil-compound semi-finished product of polypropylene film are delivered to intaglio plate coating mechanism from drawing mechanism 3
4, it is coated with solvent-free adhesive, the D-100 of such as smart bright science and technology production of mail transfer on its surface.
Composite molding：Polyamide film-pet film the composite membrane for being 25 μm by integral thickness
Expansion is unreeled in unwinding rack 5, is delivered to composite structure 6 and the alloy aluminium foil-polypropylene for being coated with adhesive for polyurethane after drying
The progress of film semi-finished product is online compound, and combined temp is 90 DEG C, composite pressure 6MPa, is then sent to the receipts of finished product rolling frame 7
The speed of production of volume, entire producing line is 20m/min, followed by aging, and curing temperature is 80 DEG C, curing time 48h, completes system
It makes.
The method of embodiment 1-4 and the preparation method of mutually isostructural aluminum plastic film in the prior art are compared, it is as follows
Shown in table 1.
Table 1
In addition to above-mentioned preferred forms, the process in the application can also take to be implemented with low extreme value,
More above-mentioned 4 embodiments of implementation result are compared, and effect is slightly poor, but result of implementation is still close to embodiment 1-4.
Embodiment 5
Production pretreatment：The alloy aluminium foil of 35 μm of the raw material of aluminum-plastic composite membrane is sent to cleaning in oil removing rinse bath to remove
Then oil is dried；
The multiple operation of first face leaching：The raw alloy aluminium foil of aluminum-plastic composite membrane is sent to leaching from unreeling structure 1 to answer a pager's call structure 2,
Graft modification polypropylene pellet is squeezed with screw extruder, and is squeezed out from die head, and extrusion temperature is 250 DEG C, squeezes out thickness control
System is at 30 μm, in aluminium foil surface lamination；
The crystalline orientation of inner layer of polypropylene controls：There are no completely cooling alloy aluminium foil-polypropylene film is multiple after lamination
Semi-finished product to be closed to be delivered to drawing mechanism 3 from leaching structure 2 of answering a pager's call and carry out crystalline orientation control, the operating temperature of drawing mechanism is 38 DEG C,
Tension is 2000N；
Second face is coated with：Alloy aluminium foil-compound semi-finished product of polypropylene film are delivered to intaglio plate coating mechanism from drawing mechanism 3
4, in its surface epoxy resin coating adhesive.
Composite molding：The polyamide film that integral thickness is 14 μm is unreeled into expansion in unwinding rack 5, is delivered to composite structure
6 carry out online compound, combined temp with the alloy aluminium foil for being coated with epoxy resin adhesive-polypropylene film semi-finished product after drying
It is 70 DEG C, composite pressure 3MPa, is then sent to the winding of finished product rolling frame 7, the speed of production of entire producing line is 10m/min,
Followed by aging, curing temperature is 80 DEG C, curing time 48h, completes manufacture.
Embodiment 6
Production pretreatment：The alloy aluminium foil of 50 μm of the raw material of aluminum-plastic composite membrane is sent to cleaning in oil removing rinse bath to remove
Then oil is dried；
The multiple operation of first face leaching：The raw alloy aluminium foil of aluminum-plastic composite membrane is sent to leaching from unreeling structure 1 to answer a pager's call structure 2,
Graft modification polypropylene pellet is squeezed with screw extruder, and is squeezed out from die head, and extrusion temperature is 280 DEG C, squeezes out thickness control
System is at 90 μm, in aluminium foil surface lamination；
The crystalline orientation of inner layer of polypropylene controls：There are no completely cooling alloy aluminium foil-polypropylene film is multiple after lamination
Semi-finished product to be closed to be delivered to drawing mechanism 3 from leaching structure 2 of answering a pager's call and carry out crystalline orientation control, the operating temperature of drawing mechanism is 70 DEG C,
Tension is 4000N；
Second face is coated with：Alloy aluminium foil-compound semi-finished product of polypropylene film are delivered to intaglio plate coating mechanism from drawing mechanism 3
4, it is coated with solvent-free adhesive, the D-100 of such as smart bright science and technology production of mail transfer on its surface.
Composite molding：The polyamide film that integral thickness is 30 μm is unreeled into expansion in unwinding rack 5, is delivered to composite structure
6 is online compound with the alloy aluminium foil for being coated with adhesive for polyurethane after drying-polypropylene film semi-finished product progress, and combined temp is
105 DEG C, composite pressure 8MPa, it is then sent to the winding of finished product rolling frame 7, the speed of production of entire producing line is 70m/min, so
Post curing, curing temperature are 80 DEG C, curing time 48h, complete manufacture.
In addition to two values for belonging to the application design scheme of above-described embodiment 5-6, but carried out above range it
Outer implementation experiment, finds through experiment, and when value is more than outside above-mentioned limiting value, implementation result is deteriorated, and with the reality of embodiment 1-4
It applies effect to compare, differ greatly.
It can be seen that the application's is designed with conducive to the folding and unfolding for reducing work hours, reducing consumption of raw materials amount, reducing aluminium foil raw material
Volume number, reduces production cost, improves yields.Those of ordinary skill in fields it should be appreciated that,
The features of the present invention or the first purpose are：The preparation side of soft package lithium battery shell encapsulation aluminum-plastic composite membrane proposed by the present invention
Method, the triviality and external interference factor of operation are effectively reduced, production cost has been saved, improves production quality.
It should be noted that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to preferable
Embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the technology of the present invention
Scheme is modified or replaced equivalently, and without departing from the spirit of the technical scheme of the invention and range, should all be covered in this hair
In bright right.
Claims (10)
1. a kind of preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane, which is characterized in that including step：
(1) production pretreatment：Alloy aluminium foil is sent in oil removing rinse bath and cleans oil removing, is then dried, it is standby as isolation layer
With；
The multiple operation of (2) first faces leaching：The isolation layer is sent to leaching from unreeling structure to answer a pager's call structure, by the heat-sealable material leaching
The screw extruder of structure of answering a pager's call squeezes, and is squeezed out from the die head of screw extruder, then lamination to the first of the isolation layer
Face forms the compound semi-finished product of isolation layer-hot sealing layer；
(3) the crystalline orientation control of inner layer of polypropylene：By after lamination there are no completely cooling isolation layer-hot sealing layer compound half at
Product are delivered to drawing mechanism progress crystalline orientation control from the structure of answering a pager's call that drenches；
(4) second faces are coated with：The compound semi-finished product of isolation layer-hot sealing layer are delivered to coating mechanism from the drawing mechanism, every
Second face of exhausted layer is coated with solvent-free adhesive, forms adhesive layer-compound semi-finished product of isolation layer-hot sealing layer；
(5) composite molding：Reinforcement material is unreeled into expansion in unwinding rack, is delivered to composite structure, and with the bonding after drying
The compound semi-finished product progress of layer-isolation layer-hot sealing layer is online compound, is then sent to the winding of finished product rolling frame, followed by aging, completes
Manufacture.
2. the preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane as described in claim 1, it is characterised in that：Step
Suddenly the thickness of alloy aluminium foil described in (1) is 35 μm -50 μm.
3. the preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane as described in claim 1, it is characterised in that：Step
Suddenly heat-sealable material described in (2) is any one in graft modification polypropylene pellet, Grafted Polyethylene pellet, the heat
The thickness that closure material is squeezed out from the die head of screw extruder is at 30 μm -90 μm.
4. the preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane as described in claim 1, it is characterised in that：Step
Suddenly the extrusion temperature that screw extruder in structure of answering a pager's call is drenched described in (2) is 250 DEG C -280 DEG C.
5. the preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane as described in claim 1, it is characterised in that：Step
Suddenly the operating temperature of drawing mechanism described in (3) is 38 DEG C -70 DEG C, tensile stress 2000N-4000N.
6. the preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane as described in claim 1, it is characterised in that：Step
Suddenly coating mechanism described in (4) is intaglio plate coating mechanism.
7. the preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane as described in claim 1, it is characterised in that：Step
Suddenly solvent-free adhesive described in (4) is adhesive for polyurethane or epoxy resin adhesive.
8. the preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane as described in claim 1, it is characterised in that：Step
Suddenly the thickness of reinforcement material described in (5) is 14 μm -30 μm, and the reinforcement material is polyamide film, poly- terephthaldehyde
The composite membrane of any one or two kinds in sour glycol ester film.
9. the preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane as described in claim 1, it is characterised in that：Step
Suddenly the combined temp of composite structure described in (5) is 75 DEG C -105 DEG C, composite pressure 3MPa-8MPa.
10. the preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane as described in claim 1, it is characterised in that：
The speed of production of the entire producing line of step (1)-step (5) is 10m/min-70m/min.
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| CN111761913A (en) * | 2020-06-30 | 2020-10-13 | 常州斯威克光伏新材料有限公司 | Preparation method of colored aluminum-plastic composite film |
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