CN1631974A - Polyester film and its production process - Google Patents
Polyester film and its production process Download PDFInfo
- Publication number
- CN1631974A CN1631974A CN 200410096765 CN200410096765A CN1631974A CN 1631974 A CN1631974 A CN 1631974A CN 200410096765 CN200410096765 CN 200410096765 CN 200410096765 A CN200410096765 A CN 200410096765A CN 1631974 A CN1631974 A CN 1631974A
- Authority
- CN
- China
- Prior art keywords
- polyester film
- slip agent
- polyester
- top layer
- surface slip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920006267 polyester film Polymers 0.000 title claims abstract description 54
- 238000004519 manufacturing process Methods 0.000 title description 4
- 239000012748 slip agent Substances 0.000 claims abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 38
- 229920000728 polyester Polymers 0.000 claims description 32
- 239000002245 particle Substances 0.000 claims description 19
- 235000012239 silicon dioxide Nutrition 0.000 claims description 19
- 239000000377 silicon dioxide Substances 0.000 claims description 19
- 229960001866 silicon dioxide Drugs 0.000 claims description 19
- 238000001125 extrusion Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 11
- 235000012204 lemonade/lime carbonate Nutrition 0.000 claims description 10
- 238000009998 heat setting Methods 0.000 claims description 9
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 6
- 239000010410 layer Substances 0.000 abstract 2
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 11
- 239000004594 Masterbatch (MB) Substances 0.000 description 10
- -1 polyethylene terephthalate Polymers 0.000 description 10
- 229920000139 polyethylene terephthalate Polymers 0.000 description 10
- 239000005020 polyethylene terephthalate Substances 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 206010013786 Dry skin Diseases 0.000 description 8
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 238000007766 curtain coating Methods 0.000 description 5
- 239000012768 molten material Substances 0.000 description 5
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 150000007520 diprotic acids Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- FYIBGDKNYYMMAG-UHFFFAOYSA-N ethane-1,2-diol;terephthalic acid Chemical compound OCCO.OC(=O)C1=CC=C(C(O)=O)C=C1 FYIBGDKNYYMMAG-UHFFFAOYSA-N 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- HRRDCWDFRIJIQZ-UHFFFAOYSA-N naphthalene-1,8-dicarboxylic acid Chemical compound C1=CC(C(O)=O)=C2C(C(=O)O)=CC=CC2=C1 HRRDCWDFRIJIQZ-UHFFFAOYSA-N 0.000 description 2
- 239000012766 organic filler Substances 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- MMEDJBFVJUFIDD-UHFFFAOYSA-N 2-[2-(carboxymethyl)phenyl]acetic acid Chemical compound OC(=O)CC1=CC=CC=C1CC(O)=O MMEDJBFVJUFIDD-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 241000024287 Areas Species 0.000 description 1
- 101100518972 Caenorhabditis elegans pat-6 gene Proteins 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- 208000006735 Periostitis Diseases 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000002290 germanium Chemical class 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 210000003460 periosteum Anatomy 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Abstract
The invention relates to a polyester film and its productive method, especially that with multi-layer structure. The polyester film comprises of the basic layer which contains slip agent (0-100ppm) and surface layer which contains slip agent (50-500ppm), can be wisely applied in LCD field, printing film drawing film, packaging, information display and other industries.
Description
Technical field
The present invention relates to a kind of polyester film, in particular, relate to a kind of polyester film and production method thereof with multilayered structure.
Technical background
Have good physical and chemical performance through biaxial stretch-formed orientation and through the polyester film after the elevated temperature heat typing, can be widely used in many industrial territories.Yet polyester film itself has the characteristic of self-adhesion, for the processing of polyester film is made troubles.In order to improve the autohension of polyester film, in the production process of polyester film, often need to add the polyester filler that contains inorganic particulate and cut into slices, to increase the surface roughness of polyester film as surface slip agent, make polyester film reach good operating performance, and rolling is functional.But, the adding of surface slip agent, the processing operation that has improved polyester film on the one hand newly can, make that on the other hand the transparency of polyester film is destroyed to a certain extent, increased the mist degree of sending out of polyester film, this is undesirable in many Application Areass, because these destructions have had a strong impact on the transmitance of light, so the application of polyester film in these fields is restricted.
For example, U.S. Pat 5,475 has been told about a kind of SiO with greater particle size in 046
2With AL than small particle size
2O
3As inorganic filler components, guaranteeing that polyester film has on the basis of good workability, increases its transmittance; U.S. Pat 4,677 has been told about a kind of big or small SiO in 188
2The polyester film that particle is used, this polyester film have excellent light transmission; English Patent GB2, told about in 188,586 a kind of, SiO
2Inorganic particulate and acid amides are used the polyester film as surface slip agent, and this polyester film has the excellent smooth property and the transparency; U.S. Pat 5,354 has been told about a kind of polyester film with excellent machining property and transparency in 595, and this film contains organic filler and SiO
2Particle is as surface slip agent; U.S. Pat 6, tell about a kind of polyester film of using as blooming in 733,863, do not contained inorganic or organic particle in the substrate layer of this polyester film, but at the one side or the two sides composite gum stick coating of polyester film, the transmittance of this polyester film can reach more than 90%; U.S. Pat 5,324, disclose a kind of polyester film with excellent transparency and smooth property in 574, this polyester film comprises cross-linked high polymer as the particle that improves the smooth property of polyester film, and the haze value of this polyester film when thickness is 100um is not more than 1%; U.S. Pat 6,787,202 have told about a kind of polymeric film that adopts the germanium series catalysts in the polyester process, and this film scribbles the coating that light is produced diffusion subsequently, and this film transmittance is more than 90%; U.S. Pat 6,420 has been told about a kind of slim polyester film of thickness below 50um with excellent light transmission in 019.
Summary of the invention
The objective of the invention is, a kind of polyester film is provided, this film has the excellent transparency and processibility.
Another object of the present invention is, the preparation method of this polyester film is provided, and this preparation method's technology is simple, and the product that obtains has good workability and excellent transparency simultaneously.
Technical scheme of the present invention is:
A kind of polyester film comprises basic unit and top layer, it is characterized in that, the content of surface slip agent is 0-100ppm in the basic unit, and the content of surface slip agent is 50-500ppm in the top layer.
A kind of preferred version, the content of surface slip agent is 0-80ppm in the wherein said basic unit.
A kind of preferred version, the content of surface slip agent is 100-300ppm in the wherein said top layer.
A kind of preferred version, wherein said surface slip agent are silicon-dioxide, lime carbonate, barium sulfate or aluminium sesquioxide.
A kind of preferred version, the particle diameter of wherein said surface slip agent are 0.2-8um, preferred 0.2-4.5um.
A kind of preparation method of polyester film is characterized in that, its preparation method may further comprise the steps:
(1) with the basic unit's polyester raw material section and the section of top layer polyester raw material that mix, sends into corresponding extrusion system respectively, melt extrude at 250 ℃～300 ℃;
(2) basic unit and top layer melt form the polyester sheet through co-extrusion die head on the cooling roller that rotates;
(3) with after the cooled sheet preheating, 3.0～3.8 times of longitudinal stretchings;
(4) with after the diaphragm preheating behind the longitudinal stretching, 3.0～4.0 times of cross directional stretchs;
(5) film after will stretching is 200 ℃～250 ℃ heat setting types, and cooling, rolling obtain polyester film then.
Polyester film can contain surface slip agent in top layer or the basic unit for two-layer structure, three-decker or the multilayered structure that comprises basic unit and top layer, and surface slip agent can improve the autohension of polyester film.
Polyester film of the present invention comprises basic unit and top layer, and wherein the content of surface slip agent is 0-100ppm in the basic unit, preferred 0-80ppm; The content of surface slip agent is 50-500ppm in the top layer, preferred 100-300ppm.
Be fit to the basic unit of polyester film of the present invention and the polymkeric substance that skin-material is diprotic acid and dibasic alcohol, wherein, diprotic acid can be aliphatic diacid, aromatic diacid, as terephthalic acid, phthalic acid, to phenylene-diacetic acid, to naphthalic acid, m-phthalic acid etc., preferred terephthalic acid and to naphthalic acid; Dibasic alcohol mainly is that carbonatoms is 2～4 aliphatic diol, as ethylene glycol, propylene glycol, butyleneglycol etc., and preferred ethylene glycol.Being fit to polyester of the present invention is that limiting viscosity is the terephthalic acid of 0.55dL/g～0.80dL/g and the polycondensate ethylene glycol terephthalate of ethylene glycol, and preferred characteristics viscosity is the ethylene glycol terephthalate of 0.60dL/g～0.70dL/g.
Surface slip agent can join in basic unit or the top layer polyester raw material in the section building-up process among the present invention, also can dose with the form of masterbatch, and preferably the form with masterbatch joins in basic unit or the top layer.
Surface slip agent can be inorganic particulates such as silicon-dioxide, titanium dioxide, aluminium sesquioxide, kaolin, lime carbonate, barium sulfate, carbon black, also can be organic fillers such as crosslinked polystyrene, polymethylmethacrylate, preferred silicon-dioxide, lime carbonate, barium sulfate or aluminium sesquioxide particle, wherein the particle diameter of surface slip agent is 0.2-8um, preferred 0.2-4.5um.
Polyester film can prepare as modes such as coating, co-extrusions by routine techniques, and the preparation method of polyester film of the present invention may further comprise the steps:
(1) with the basic unit's polyester raw material section and the section of top layer polyester raw material that mix, sends into corresponding extrusion system respectively, melt extrude at 250 ℃～300 ℃;
(2) basic unit and top layer melt form the polyester sheet through co-extrusion die head on the cooling roller that rotates;
(3) with after the cooled sheet preheating, 3.0～3.8 times of longitudinal stretchings;
(4) with after the diaphragm preheating behind the longitudinal stretching, 3.0～4.0 times of cross directional stretchs;
(5) film after will stretching is 200-250 ℃ of heat setting type, and cooling, rolling obtain polyester film then.
Among the present invention, basic unit's vibrin carries out crystallizing and drying at 150-180 ℃ to be handled, and sends into single screw extrusion machine then, melt extrudes under 250-300 ℃ temperature; The top layer vibrin can carry out crystallizing and drying at 150-180 ℃ to be handled, and does not perhaps carry out drying and makes processing, sends into twin screw extruder and melt extrudes.
The optional complete processing known in the art of the present invention, as periosteum technology, flat membrane process, preferred flat membrane process, fused basic unit and top layer polyester fondant go out to the cylinder of quenching from T pattern coextrusion head, to guarantee the copolyesters quenching to unformed state, stretch orientation obtains polymeric film then.The stretching of polymeric film can be the uniaxial extension orientation, also can be biaxial stretch-formed orientation, but preferred polymer films diaxial orientation stretching on two orthogonal directions of planar, to obtain gratifying machinery and physicals.Diaxial orientation usually can by order in 70-125 ℃ of temperature range, at first at length direction (operating direction) stretching 3.0-3.8, stretch 3.0-4.0 then in a lateral direction doubly, then 200-250 ℃ of heat setting type, obtain the polyester film of stretch orientation.
Polyester film provided by the invention can be widely used in fields such as optics, electronics, image, information demonstration.
Embodiment
The present invention is described further below in conjunction with specific embodiment.
Embodiment 1
With limiting viscosity be the polyethylene terephthalate polyester section (as basic unit) of 0.65dl/g at 170 ℃ of crystallizing and dryings, then the material of advantages of good crystallization is sent into single screw extrusion machine, under 250 ℃ of conditions, melt extrude.
With property viscosity is that the polyethylene terephthalate polyester section of 0.60dl/g and the polyester masterbatch section (as the top layer) that contains the silicon-dioxide surface slip agent mix, the content that makes final silicon-dioxide is 150ppm, wherein the particle diameter of silicon-dioxide is 1.8um, with the material that mixes at 170 ℃ of crystallizing and dryings, send into twin screw extruder then, under 280 ℃ of conditions, melt extrude.
Above-mentioned two kinds of molten materials by a co-extrusion die head, on the cooling drum with the rotation of melt curtain coating to, are become the three-decker sheet on unformed top layer/basic unit/top layer.
This sheet is preheating to about 80 ℃, longitudinal stretching is 3.3 times subsequently, the polymer sheet film that longitudinal stretching is thick is delivered in the horizontal tenter machine, under about 110 ℃ of conditions with 3.5 times of sheet film cross directional stretchs, with polymeric film heat setting type under about 230 ℃ temperature condition of biaxial stretch-formed orientation.The thickness of final polymeric film is 180um, and wherein substrate layer is 160um, and the top layer is 10um.
Embodiment 2
With limiting viscosity is that the polyethylene terephthalate polyester section of 0.65dl/g and the polyester masterbatch section (as basic unit) that contains the silicon-dioxide surface slip agent mix at 170 ℃ of crystallizing and dryings, the content that makes final silicon-dioxide is 50ppm, wherein the particle diameter of silicon-dioxide is 0.8um, then the material of advantages of good crystallization is sent into single screw extrusion machine, under 280 ℃ of conditions, melt extrude.
With property viscosity is that the polyethylene terephthalate polyester section of 0.65dl/g and the polyester masterbatch section (as the top layer) that contains the silicon-dioxide surface slip agent mix, the content that makes final silicon-dioxide is 80ppm, the particle diameter of silicon-dioxide is 4.5um with the material that mixes at 170 ℃ of crystallizing and dryings, send into twin screw extruder then, under 280 ℃ of conditions, melt extrude.
Above-mentioned two kinds of molten materials by a co-extrusion die head, on the cooling drum with the rotation of melt curtain coating to, are become the two-layer structure sheet of unformed top layer/basic unit.
This sheet is preheating to about 80 ℃, longitudinal stretching is 3.0 times subsequently, the polymer sheet film that longitudinal stretching is thick is delivered in the horizontal tenter machine, under 110 ℃ of conditions with 3.0 times of sheet film cross directional stretchs, with polymeric film heat setting type under about 200 ℃ temperature condition of biaxial stretch-formed orientation.The thickness of final polymeric film is that the thickness of final polymeric film is 75um, and wherein substrate layer is 65um, and the top layer is 10um.
Embodiment 3
With limiting viscosity is that the polyethylene terephthalate polyester section of 0.65dl/g and the polyester masterbatch section (as basic unit) that contains the silicon-dioxide surface slip agent mix, the content that makes final silicon-dioxide is 100ppm, wherein, the particle diameter of silicon-dioxide is that 8um (as basic unit) is at 170 ℃ of crystallizing and dryings, the material of advantages of good crystallization is sent into single screw extrusion machine, under 280 ℃ of conditions, melt extrude.
With property viscosity is that the polyethylene terephthalate polyester section of 0.8dl/g and the polyester masterbatch section (as the top layer) that contains the aluminium sesquioxide surface slip agent mix, the content that makes final aluminium sesquioxide is 500ppm, wherein, the particle diameter of aluminium sesquioxide is 0.2um, the material that mixes is sent into twin screw extruder, under 300 ℃ of conditions, melt extrude.
Above-mentioned two kinds of molten materials by a co-extrusion die head, on the cooling drum that melt curtain coating to is rotated, are become the three-decker sheet on unformed top layer/basic unit/top layer.
This sheet is preheating to about 85 ℃, longitudinal stretching is 3.0 times subsequently, the polymer sheet film that longitudinal stretching is thick is delivered in the horizontal tenter machine, under 110 ℃ of conditions with 3.3 times of sheet film cross directional stretchs, with polymeric film heat setting type under about 230 ℃ temperature condition of biaxial stretch-formed orientation.The thickness of final polymeric film is 50um, and wherein substrate layer is 34um, and the top layer is 8um.
Embodiment 4
With limiting viscosity is that the polyethylene terephthalate polyester section of 0.66dl/g and the polyester masterbatch section (as basic unit) that contains the lime carbonate surface slip agent mix, the content that makes final lime carbonate is 80ppm, wherein, the particle diameter of lime carbonate is 0.3um, with this mixture at 180 ℃ of crystallizing and dryings, then the material of advantages of good crystallization is sent into single screw extrusion machine, under 280 ℃ of conditions, melt extrude.
With property viscosity is that the polyethylene terephthalate polyester section of 0.60dl/g and the polyester masterbatch section (as the top layer) that contains the lime carbonate surface slip agent mix, the content that makes final lime carbonate is 100ppm, wherein, the particle diameter of lime carbonate is 2.0um, the material that mixes is sent into twin screw extruder, under 280 ℃ of conditions, melt extrude.
Above-mentioned two kinds of molten materials by a co-extrusion die head, on the cooling drum with the rotation of melt curtain coating to, are become the three-decker sheet on unformed top layer/basic unit/top layer.
This sheet is preheating to about 80 ℃, longitudinal stretching is 3.8 times subsequently, the polymer sheet film that longitudinal stretching is thick is delivered in the horizontal tenter machine, under 110 ℃ of conditions with 4.0 times of the horizontal stretchings of sheet film, with polymeric film heat setting type under about 230 ℃ temperature condition of biaxial stretch-formed orientation.The thickness of final polymeric film is 100um, and wherein substrate layer is 80um, and the top layer is 10um.
Embodiment 5
With limiting viscosity be the polyethylene terephthalate polyester section (as basic unit) of 0.55dl/g at 150 ℃ of crystallizing and dryings, then the material of advantages of good crystallization is sent into single screw extrusion machine, under 260 ℃ of conditions, melt extrude.
With property viscosity is that the polyethylene terephthalate polyester section of 0.70dl/g and the polyester masterbatch section (as the top layer) that contains the silicon-dioxide surface slip agent mix, the content that makes final silicon-dioxide is 300ppm, wherein the particle diameter of silicon-dioxide is 0.5um, with the material that mixes at 170 ℃ of crystallizing and dryings, send into twin screw extruder then, under 285 ℃ of conditions, melt extrude.
Above-mentioned two kinds of molten materials by a co-extrusion die head, on the cooling drum with the rotation of melt curtain coating to, are become the three-decker sheet on unformed top layer/basic unit/top layer.
This sheet is preheating to about 80 ℃, longitudinal stretching is 3.3 times subsequently, the polymer sheet film that longitudinal stretching is thick is delivered in the horizontal tenter machine, under 110 ℃ of conditions with 3.5 times of sheet film cross directional stretchs, with polymeric film heat setting type under about 250 ℃ temperature condition of biaxial stretch-formed orientation.The thickness of final polymeric film is 300um, and wherein substrate layer is 280um, and skin depth is 10um.
Claims (7)
1. a polyester film comprises basic unit and top layer, it is characterized in that, the content of surface slip agent is 0-100ppm in the basic unit, and the content of surface slip agent is 50-500ppm in the top layer.
2. polyester film according to claim 1 is characterized in that, the content of surface slip agent is 0-80ppm in the wherein said basic unit.
3. polyester film according to claim 1 is characterized in that, the content of surface slip agent is 100-300ppm in the wherein said top layer.
4. polyester film according to claim 1 is characterized in that, the preferred silicon-dioxide of wherein said surface slip agent, lime carbonate, barium sulfate or aluminium sesquioxide particle.
5. polyester film according to claim 1 is characterized in that, the particle diameter of wherein said surface slip agent is 0.2-8um.
6. polyester film according to claim 5 is characterized in that, the particle diameter of wherein said surface slip agent is 0.2-4.5um.
7. the preparation method of the described polyester film of claim 1 is characterized in that, its preparation method may further comprise the steps:
(1) with the basic unit's polyester raw material section and the section of top layer polyester raw material that mix, sends into corresponding extrusion system respectively, melt extrude at 250 ℃～300 ℃;
(2) basic unit and top layer melt form the polyester sheet through co-extrusion die head on the cooling roller that rotates;
(3) with after the cooled sheet preheating, 3.0～3.8 times of longitudinal stretchings;
(4) with after the diaphragm preheating behind the longitudinal stretching, 3.0～4.0 times of cross directional stretchs;
(5) film after will stretching is 200 ℃～250 ℃ heat setting types, and cooling, rolling obtain polyester film then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100967656A CN100480326C (en) | 2004-12-07 | 2004-12-07 | Polyester film and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100967656A CN100480326C (en) | 2004-12-07 | 2004-12-07 | Polyester film and production process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1631974A true CN1631974A (en) | 2005-06-29 |
| CN100480326C CN100480326C (en) | 2009-04-22 |
Family
ID=34847891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100967656A Expired - Fee Related CN100480326C (en) | 2004-12-07 | 2004-12-07 | Polyester film and production process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100480326C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962467A (en) * | 2010-10-15 | 2011-02-02 | 中国乐凯胶片集团公司 | Polyester film and preparation method thereof |
| CN101298203B (en) * | 2008-07-02 | 2011-09-07 | 中国乐凯胶片集团公司 | Transparent smooth polyester film and production method thereof |
| CN102463725A (en) * | 2010-11-16 | 2012-05-23 | 上海邦凯塑胶科技有限公司 | Polyester film and manufacture method thereof |
| CN106183270A (en) * | 2016-08-11 | 2016-12-07 | 苏州柯创电子材料有限公司 | Composite bed mylar |
| CN107443776A (en) * | 2017-08-03 | 2017-12-08 | 营口康辉石化有限公司 | A kind of preparation method of 350 μm of polyester thick films |
-
2004
- 2004-12-07 CN CNB2004100967656A patent/CN100480326C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298203B (en) * | 2008-07-02 | 2011-09-07 | 中国乐凯胶片集团公司 | Transparent smooth polyester film and production method thereof |
| CN101962467A (en) * | 2010-10-15 | 2011-02-02 | 中国乐凯胶片集团公司 | Polyester film and preparation method thereof |
| CN102463725A (en) * | 2010-11-16 | 2012-05-23 | 上海邦凯塑胶科技有限公司 | Polyester film and manufacture method thereof |
| CN106183270A (en) * | 2016-08-11 | 2016-12-07 | 苏州柯创电子材料有限公司 | Composite bed mylar |
| CN107443776A (en) * | 2017-08-03 | 2017-12-08 | 营口康辉石化有限公司 | A kind of preparation method of 350 μm of polyester thick films |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100480326C (en) | 2009-04-22 |
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