CN107825794A - A kind of top layer is biaxial tension nylon co-extrusion film of polyester and preparation method thereof - Google Patents
A kind of top layer is biaxial tension nylon co-extrusion film of polyester and preparation method thereof Download PDFInfo
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- CN107825794A CN107825794A CN201711144204.2A CN201711144204A CN107825794A CN 107825794 A CN107825794 A CN 107825794A CN 201711144204 A CN201711144204 A CN 201711144204A CN 107825794 A CN107825794 A CN 107825794A
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- polyester
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- resin
- extrusion film
- biaxial tension
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- 238000001125 extrusion Methods 0.000 title claims abstract description 64
- 229920000728 polyester Polymers 0.000 title claims abstract description 43
- 239000004677 Nylon Substances 0.000 title claims abstract description 34
- 229920001778 nylon Polymers 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000010410 layer Substances 0.000 claims abstract description 66
- 229920005989 resin Polymers 0.000 claims abstract description 34
- 239000011347 resin Substances 0.000 claims abstract description 34
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 239000002346 layers by function Substances 0.000 claims abstract description 18
- 150000001408 amides Chemical class 0.000 claims abstract description 13
- 229920006026 co-polymeric resin Polymers 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000004840 adhesive resin Substances 0.000 claims abstract description 3
- 229920006223 adhesive resin Polymers 0.000 claims abstract description 3
- 238000005266 casting Methods 0.000 claims abstract description 3
- 150000004767 nitrides Chemical class 0.000 claims abstract description 3
- -1 polybutylene terephthalate Polymers 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 229920001577 copolymer Polymers 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 229920006284 nylon film Polymers 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 9
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 6
- 229920002292 Nylon 6 Polymers 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 229920005672 polyolefin resin Polymers 0.000 claims description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical class CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- JBSLOWBPDRZSMB-FPLPWBNLSA-N dibutyl (z)-but-2-enedioate Chemical compound CCCCOC(=O)\C=C/C(=O)OCCCC JBSLOWBPDRZSMB-FPLPWBNLSA-N 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 229940102838 methylmethacrylate Drugs 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 150000001336 alkenes Chemical class 0.000 claims 2
- 229920001634 Copolyester Polymers 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- UHPJWJRERDJHOJ-UHFFFAOYSA-N ethene;naphthalene-1-carboxylic acid Chemical compound C=C.C1=CC=C2C(C(=O)O)=CC=CC2=C1 UHPJWJRERDJHOJ-UHFFFAOYSA-N 0.000 claims 1
- 229920003145 methacrylic acid copolymer Polymers 0.000 claims 1
- 229940117841 methacrylic acid copolymer Drugs 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000003792 electrolyte Substances 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 14
- 238000009998 heat setting Methods 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 239000000155 melt Substances 0.000 description 5
- 238000003851 corona treatment Methods 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229920005680 ethylene-methyl methacrylate copolymer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010001557 Albinism Diseases 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- 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
- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- 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
-
- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
- B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/04—Punching, slitting or perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/04—Punching, slitting or perforating
- B32B2038/045—Slitting
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7246—Water vapor barrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
- B32B2307/734—Dimensional stability
Abstract
The invention provides a kind of top layer be polyester biaxial tension nylon co-extrusion film, including be sequentially connected functional layer, sandwich layer, composite bed；The functional layer is polyester copolymer resin nitride layer, and the sandwich layer is adhesive resin layer, and the composite bed is acid amides resin；Co-extrusion film is made by coextrusion casting and stretch processes in the functional layer, sandwich layer, composite bed.The gross thickness of the co-extrusion film is 10um~30um.Preparation method present invention also offers top layer for the biaxial tension nylon co-extrusion film of polyester.Co-extrusion film provided by the invention overcomes the deficiencies in the prior art, and percent thermal shrinkage is low, there is high resistant to deaden moist, the corrosion of surface electrolyte resistance, and product cost is low, manufacture course of products environmental protection.
Description
Technical field
It is biaxial tension nylon co-extrusion film of polyester and preparation method thereof the present invention relates to a kind of top layer, belongs to packaging material
Technical field.
Background technology
Conventional lithium battery pack package material mainly has box hat, aluminum hull, aluminum plastic film etc..Compared to packing timbers such as box hat, aluminum hulls
Material, aluminum plastic film have the characteristics that light, thickness of thin, appearance design are flexible, are increasingly becoming the market mainstream.
At present, aluminum plastic film typically does top layer using polyamide film (PA), but it is produced intolerant to electrolytic corrosion and easily
Albinism.Because of resistance to electricity such as polyester film polyethylene terephthalate (PET)/polybutylene terephthalate (PBT)s (PBT)
Solve liquid and good moldability, power aluminum plastic film top layer adhere to a strata ester film, electrolyte resistance again on the basis of original nylon layer
It is excellent.But secondary use glue and VOC emission amount height in its production process be present, and integrated cost is higher, is unfavorable for market
Large-scale promotion and use.
The content of the invention
The technical problem to be solved in the present invention is：The electrolyte resistance performance on packaging film surface how is lifted, while reduces production
Product manufacturing cost, and make manufacture course of products more environmentally-friendly.
In order to solve the above-mentioned technical problem, the technical scheme is that providing the biaxial tension Buddhist nun that a kind of top layer is polyester
Imperial co-extrusion film, it is characterised in that：Including be sequentially connected functional layer, sandwich layer, composite bed；The functional layer is polyester copolymer resin
Nitride layer, the sandwich layer are adhesive resin layer, and the composite bed is acid amides resin；The functional layer, sandwich layer, composite bed lead to
Cross coextrusion casting and co-extrusion film is made in stretch processes.
Preferably, the gross thickness of the co-extrusion film is 10um~30um.
Preferably, the functional layer thickness is the 20%~35% of co-extrusion film gross thickness, and the core layer thickness is co-extrusion film
The 15%~30% of gross thickness, the composite bed thickness are the 40%~60% of co-extrusion film gross thickness.
Preferably, the functional layer polyester copolymer resin thing is pet copolymer, gathered to benzene two
Formic acid butanediol ester copolymer, polyethylene naphthalate copolymer, gather in naphthalenedicarboxylic acid butanediol ester copolymer
It is one or more of.
Be adhered agent containing anti-in the functional layer, it is anti-to be adhered agent as gluey or chain silica, content be 0.2wt%~
1wt%.
Preferably, the sandwich layer resin of binding property be acid-modified polyolefin resin, ethylene-acrylic acid copolymer, ethene and
The copolymer of acrylic acid derivative, copolymer from ethylene and methacrylic acid, ethene and methacrylic acid derivative copolymer with
And any one in above-mentioned resin modified thing.
It is highly preferred that the acid modified polyolefin tree is maleic anhydride inoculated polypropylene, acrylic acid-grafted polypropylene, methyl
Glycidyl acrylate/styrene fusion-grafting polypropylene, methyl-methacrylate grafted polypropylene, maleic anhydride grafting are poly-
One or more in ethene, dibutyl maleate grafted polyethylene.
Preferably, the composite bed acid amides system resin is nylon-6 resin.
A kind of preparation method present invention also offers above-mentioned top layer for the biaxial tension nylon co-extrusion film of polyester, it is special
Sign is that step is：
Step 1：Polyester copolymer resin thing, resin of binding property, acid amides system resin are separately added into 3 extruders and melted,
The melt of extrusion is separately flowed into the runner of multiple flow passages coextrusion machine, and three layers of melt are in head mouth after chill roll is cooled and shaped
Obtain co-extrusion nylon film first product；
Step 2：By co-extrusion nylon film first product elder generation's longitudinal stretching and thermal finalization, then cross directional stretch and thermal finalization；Most
By cooling, corona, winding, cutting, the biaxial tension nylon coextruded film that the top layer is polyester is obtained.
Preferably, in the step 1, melting temperature is 260 DEG C~280 DEG C, the temperature of extruder die head for 260 DEG C~
270℃；The temperature of cooling and shaping is 20~45 DEG C.
Preferably, in the step 2, longitudinal drawing temperature is 80~120 DEG C, and longitudinal stretching ratio is 3.1~3.4, longitudinal direction
Heat setting temperature is 40 DEG C~100 DEG C after stretching；Transverse drawing temperature is 100~150 DEG C, and cross directional stretch ratio is 3.8~4.2,
Heat setting temperature is 80 DEG C~140 DEG C after cross directional stretch；Chilling temperature is 20~45 DEG C.
Co-extrusion film provided by the invention overcomes the deficiencies in the prior art, and percent thermal shrinkage is low, and there is high resistant to deaden moist, table
Face electrolyte resistance corrosion, and product cost is low, manufacture course of products environmental protection.
Brief description of the drawings
Fig. 1 is the biaxial tension nylon co-extrusion membrane structure schematic diagram that top layer is polyester.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.
Embodiment 1
Using the flat embrane method biaxial tension equipment production 15um of 3 layers of co-extrusion nylon co-extrusion film, its specific structure see the table below.
First, dispensing
Functional layer：Weigh 36~40 parts of polyethylene terephthalate, 0.3 part of silica；
Sandwich layer：Weigh 18~22 parts of maleic anhydride inoculated polypropylene resin.
Composite bed：Weigh 35~39 parts of the resin of polyamide nylon -6.
2nd, preparation method is as follows：
Step 1：Polyester copolymer resin thing, resin of binding property, acid amides system resin are separately added into 3 extruders and melted,
The melt of extrusion is separately flowed into the runner of multiple flow passages coextrusion machine, and three layers of melt are in head mouth after chill roll is cooled and shaped
Obtain co-extrusion nylon film first product；
Step 2：By co-extrusion nylon film first product elder generation's longitudinal stretching and thermal finalization, then cross directional stretch and thermal finalization；Most
By cooling, corona, winding, cutting, the biaxial tension nylon coextruded film that the top layer is polyester is obtained.
In step 1, polyester melting temperature is 280 DEG C, and maleic anhydride inoculated polypropylene resin melt temperature is 280 DEG C, is gathered
280 DEG C of amide resin melting temperature, the temperature of die head is 270 DEG C；It is 45 DEG C to be cooled and shaped chill-roll temperature.
In step 2, longitudinal drawing temperature is 120 DEG C, and longitudinal stretching ratio is 3.1~3.4, heat setting temperature after longitudinal stretching
100℃；Transverse drawing temperature is 140 DEG C, and cross directional stretch ratio is 3.8~4.2,140 DEG C of heat setting temperature after cross directional stretch.Cooling
Temperature 45 C, and sided corona treatment is carried out to composite surface, the two-way nylon co-extrusion film that a kind of top layer is polyester is made.
Obtained top layer for polyester biaxial tension nylon co-extrusion membrane structure as shown in figure 1, by functional layer 1, sandwich layer 2,
Composite bed 3 is sequentially connected composition.
Embodiment 2
Using the flat embrane method biaxial tension equipment production 25um of 3 layers of co-extrusion nylon co-extrusion film, its specific structure see the table below.
First, dispensing
Functional layer：Weigh 27~31 parts of polyethylene terephthalate, 0.7 part of silica；
Sandwich layer：Weigh 10~14 parts of maleic anhydride stem grafting polyolefin resin, wherein grafted maleic anhydride content be 1wt%~
2wt%；
Composite bed：Weigh 57~61 parts of the resin of polyamide nylon -6.
2nd, preparation method is as follows：
Step 1：Polyester copolymer resin thing, resin of binding property, acid amides system resin are separately added into 3 extruders and melted,
The melt of extrusion is separately flowed into the runner of multiple flow passages coextrusion machine, and three layers of melt are in head mouth after chill roll is cooled and shaped
Obtain co-extrusion nylon film first product；
Step 2：By co-extrusion nylon film first product elder generation's longitudinal stretching and thermal finalization, then cross directional stretch and thermal finalization；Most
By cooling, corona, winding, cutting, the biaxial tension nylon coextruded film that the top layer is polyester is obtained.
In step 1, polyester melting temperature is 275 DEG C, and maleic anhydride grafted polyethylene resin melt temperature is 275 DEG C, is gathered
275 DEG C of amide resin melting temperature, the temperature of die head is 265 DEG C；It is 40 DEG C to be cooled and shaped chill-roll temperature.
In step 2, longitudinal drawing temperature is 110 DEG C, and longitudinal stretching ratio is 3.1~3.4, heat setting temperature after longitudinal stretching
80℃；Transverse drawing temperature is 120 DEG C, and cross directional stretch ratio is 3.8~4.2,120 DEG C of heat setting temperature after cross directional stretch；Cooling
30 DEG C of temperature, and sided corona treatment is carried out to composite surface, the two-way nylon co-extrusion film that a kind of top layer is polyester is made.
Embodiment 3
Using the flat embrane method biaxial tension equipment production 15um of 3 layers of co-extrusion nylon co-extrusion film, its specific structure see the table below.
First, dispensing
Functional layer：Weigh 36~40 parts of polybutylene terephthalate (PBT), 0.3 part of silica；
Sandwich layer：Weigh 20~24 parts of ethylene acrylic acid co polymer (EAA) resin；
Composite bed：Weigh 38~42 parts of the resin of polyamide nylon -6.
2nd, preparation method is as follows：
Step 1：Polyester copolymer resin thing, resin of binding property, acid amides system resin are separately added into 3 extruders and melted,
The melt of extrusion is separately flowed into the runner of multiple flow passages coextrusion machine, and three layers of melt are in head mouth after chill roll is cooled and shaped
Obtain co-extrusion nylon film first product；
Step 2：By co-extrusion nylon film first product elder generation's longitudinal stretching and thermal finalization, then cross directional stretch and thermal finalization；Most
By cooling, corona, winding, cutting, the biaxial tension nylon coextruded film that the top layer is polyester is obtained.
In step 1, polyester melting temperature is 270 DEG C, and ethylene acrylic acid co polymer melting temperature is 270 DEG C, polyamide resin
270 DEG C of fat melting temperature, the temperature of die head is 265 DEG C；It is 30 DEG C to be cooled and shaped chill-roll temperature.
In step 2, longitudinal drawing temperature is 90 DEG C, and longitudinal stretching ratio is 3.1~3.4, heat setting temperature after longitudinal stretching
70℃；Transverse drawing temperature is 110 DEG C, and cross directional stretch ratio is 3.8~4.2,100 DEG C of heat setting temperature after cross directional stretch.Cooling
Temperature is 25 DEG C, and carries out sided corona treatment to composite surface, and the two-way nylon co-extrusion film that a kind of top layer is polyester is made.
Embodiment 4
Using the flat embrane method biaxial tension equipment production 25um of 3 layers of co-extrusion nylon co-extrusion film, its specific structure see the table below.
First, dispensing
Functional layer：Weigh 26~30 parts of polybutylene terephthalate (PBT), 0.7 part of silica；
Sandwich layer：Weigh 11~15 parts of ethylene methyl methacrylate copolymer (EMMA)；
Composite bed：Weigh 58~62 parts of the resin of polyamide nylon -6.
2nd, preparation method is as follows：
Step 1：Polyester copolymer resin thing, resin of binding property, acid amides system resin are separately added into 3 extruders and melted,
The melt of extrusion is separately flowed into the runner of multiple flow passages coextrusion machine, and three layers of melt are in head mouth after chill roll is cooled and shaped
Obtain co-extrusion nylon film first product；
Step 2：By co-extrusion nylon film first product elder generation's longitudinal stretching and thermal finalization, then cross directional stretch and thermal finalization；Most
By cooling, corona, winding, cutting, the biaxial tension nylon coextruded film that the top layer is polyester is obtained.
In step 1, polyester melting temperature is 260 DEG C, and ethylene acrylic acid co polymer melting temperature is 260 DEG C, polyamide resin
260 DEG C of fat melting temperature, the temperature of die head is 260 DEG C；It is 20 DEG C to be cooled and shaped chill-roll temperature.
In step 2, longitudinal drawing temperature is 80 DEG C, and longitudinal stretching ratio is 3.1~3.4, heat setting temperature after longitudinal stretching
60℃；Transverse drawing temperature is 100 DEG C, and cross directional stretch ratio is 3.8~4.2,80 DEG C of heat setting temperature after cross directional stretch；Cooling temperature
Spend for 20 DEG C, and sided corona treatment is carried out to composite surface, the two-way nylon co-extrusion film that a kind of top layer is polyester is made.
Biaxial tension nylon co-extrusion film, test data and experimental phenomena are as follows made from 4 embodiments：
Electrolyte resistance corrosion test：
Conclusion：Above-mentioned experimental data and experimental phenomena show that biaxial tension co-extrusion film percent thermal shrinkage provided by the invention is low,
It is moist with high resistant deadening, and surface electrolyte resistance corrodes.
It is described above, only presently preferred embodiments of the present invention, it is not any to the present invention in form and substantial limitation,
It should be pointed out that for those skilled in the art, on the premise of the inventive method is not departed from, can also make
Some improvement and supplement, these are improved and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, when made using disclosed above technology contents it is a little more
Dynamic, modification and the equivalent variations developed, it is the equivalent embodiment of the present invention；Meanwhile all substantial technologicals pair according to the present invention
The variation, modification and evolution for any equivalent variations that above-described embodiment is made, still fall within the scope of technical scheme
It is interior.
Claims (10)
1. a kind of top layer is the biaxial tension nylon co-extrusion film of polyester, it is characterised in that：Including be sequentially connected functional layer (1),
Sandwich layer (2), composite bed (3)；The functional layer (1) is polyester copolymer resin nitride layer, and the sandwich layer (2) is adhesive resin layer,
The composite bed (3) is acid amides resin；The functional layer (1), sandwich layer (2), composite bed (3) pass through coextrusion casting and two-way
Co-extrusion film is made in drawing process.
2. a kind of top layer as claimed in claim 1 is the biaxial tension nylon co-extrusion film of polyester, it is characterised in that：The co-extrusion
The gross thickness of film is 10um~30um.
3. a kind of top layer as claimed in claim 1 or 2 is the biaxial tension nylon co-extrusion film of polyester, it is characterised in that：It is described
Functional layer (1) thickness be co-extrusion film gross thickness 20%~35%, sandwich layer (2) thickness for co-extrusion film gross thickness 15%~
30%, composite bed (3) thickness is the 40%~60% of co-extrusion film gross thickness.
4. a kind of top layer as claimed in claim 1 is the biaxial tension nylon co-extrusion film of polyester, it is characterised in that：The function
Strata ester resin copolymer be pet copolymer, polybutylene terephthalate (PBT) copolymer, poly- pair
(ethylene naphthalate) copolymer, gather to one kind in naphthalenedicarboxylic acid butanediol ester copolymer or above-mentioned four copolyester
It is or several.
5. a kind of top layer as claimed in claim 4 is the biaxial tension nylon co-extrusion film of polyester, it is characterised in that：The function
Agent is adhered containing anti-in layer (1), anti-to be adhered agent as gluey or chain silica, content be 0.2wt%~1wt%.
6. a kind of top layer as claimed in claim 1 is the biaxial tension nylon co-extrusion film of polyester, it is characterised in that：The sandwich layer
Resin of binding property is copolymer, the second of acid-modified polyolefin resin, ethylene-acrylic acid copolymer, ethene and acrylic acid derivative
It is any in alkene and methacrylic acid copolymer, the copolymer of ethene and methacrylic acid derivative and above-mentioned resin modified thing
It is a kind of；Wherein, the acid-modified polyolefin resin is maleic anhydride inoculated polypropylene, acrylic acid-grafted polypropylene, metering system
Acid glycidyl ester/styrene fusion-grafting polypropylene, methyl-methacrylate grafted polypropylene, maleic anhydride are grafted poly- second
One or more in alkene, dibutyl maleate grafted polyethylene.
7. a kind of top layer as claimed in claim 1 is the biaxial tension nylon co-extrusion film of polyester, it is characterised in that：It is described compound
Layer acid amides system resin is nylon-6 resin.
8. a kind of top layer as described in any one of claim 1~7 is the preparation method of the biaxial tension nylon co-extrusion film of polyester,
Characterized in that, step is：
Step 1：Polyester copolymer resin thing, resin of binding property, acid amides system resin are separately added into 3 extruders and melted, is extruded
Melt separately flow into multiple flow passages coextrusion machine runner in, three layers of melt obtain in head mouth after chill roll is cooled and shaped
Co-extrusion nylon film first product；
Step 2：By co-extrusion nylon film first product elder generation's longitudinal stretching and thermal finalization, then cross directional stretch and thermal finalization；Most pass through afterwards
Cooling, corona, winding, cutting, obtain the biaxial tension nylon coextruded film that the top layer is polyester.
9. a kind of top layer as claimed in claim 8 is the preparation method of the biaxial tension nylon co-extrusion film of polyester, its feature exists
In：In the step 1, melting temperature is 260 DEG C~280 DEG C, and the temperature of extruder die head is 260 DEG C~270 DEG C；It is cooled and shaped
Temperature be 20~45 DEG C.
10. a kind of top layer as claimed in claim 8 is the preparation method of the biaxial tension nylon co-extrusion film of polyester, its feature exists
In：In the step 2, longitudinal drawing temperature is 80~120 DEG C, and longitudinal stretching ratio is 3.1~3.4, thermal finalization after longitudinal stretching
Temperature is 60 DEG C~100 DEG C；Transverse drawing temperature is 100~140 DEG C, and cross directional stretch ratio is 3.8~4.2, heat after cross directional stretch
Setting temperature is 80 DEG C~140 DEG C；Chilling temperature is 20~45 DEG C.
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Application publication date: 20180323 |