CN1286911C - Black lighttight type polyester film and preparation method - Google Patents
Black lighttight type polyester film and preparation method Download PDFInfo
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- CN1286911C CN1286911C CN 200410039197 CN200410039197A CN1286911C CN 1286911 C CN1286911 C CN 1286911C CN 200410039197 CN200410039197 CN 200410039197 CN 200410039197 A CN200410039197 A CN 200410039197A CN 1286911 C CN1286911 C CN 1286911C
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- black
- polyester
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- polyester film
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- 229920006267 polyester film Polymers 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 229920000728 polyester Polymers 0.000 claims abstract description 107
- 239000006229 carbon black Substances 0.000 claims abstract description 61
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 61
- 150000001875 compounds Chemical class 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 12
- 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 claims description 12
- 238000009998 heat setting Methods 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 9
- 238000005034 decoration Methods 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract 2
- 238000005266 casting Methods 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 239000000975 dye Substances 0.000 description 22
- 239000010408 film Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 206010013786 Dry skin Diseases 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 230000007704 transition Effects 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000010409 thin film Substances 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000007520 diprotic acids Chemical class 0.000 description 2
- 238000012856 packing Methods 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
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 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
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 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
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 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 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 150000004053 quinones Chemical class 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 125000005480 straight-chain fatty acid group Chemical group 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The present invention relates to a polyester film and a production method thereof, particularly to a black lightproof type polyester film and a production method thereof. The polyester film is composed of the components of the following proportion by weight: 65 to 97.9% of polyester slice, 2 to 20% of black polyester parent material of a carbon black type and 0.1 to 15% of black polyester parent material of a carbon black organic dye composite type. The preparation method comprises that (1) the polyester slice, the black polyester parent material of a carbon black type and the black polyester parent material of a carbon black organic dye composite type are mixed and dried; (2) the dried material is melted to be extruded, and fused mass is cooled on a sheet casting roller to form a slab; (3) the cooled slab is preheated to be stretched by 3.0 to 3.8 times in a longitudinal direction; (4) the film sheet stretched in a longitudinal direction is preheated to be stretched by 3.0 to 4.0 times in a lateral direction; (5) a stretched film is heated to be shaped, and after being cooled, the stretched film is wrapped to obtain black lightproof type polyester film. The polyester film produced by the method has the advantages of uniform black chroma, light prevention, luminous surfaces, good heat stability and large strength; the polyester film can be widely used for fields, such as drum musical instruments and electronic electric appliances, and can be also widely used for packaging, decoration, etc.
Description
Technical field
The present invention relates to a kind of black polyester film, in particular, relate to light tight type polyester film of a kind of black and production method thereof.
Technical background
Polyester film has good physical and chemical performance, can be widely used in many industrial circles.In recent years, a kind of drum music device that is used for, electronic apparatus, the black polyester film development in packing and decoration field rapidly, consumption is in continuous increase, this type of black polyester film has the high strength of conventional polyester film except requiring it, outside the thermostability characteristic, degree of blackness and opaqueness to polyester film also proposed requirement simultaneously, for example, U.S. Pat 4,603, told about a kind of black polyester film that is used for magnetic recording media in 073, the black polyester masterbatch that this film adopts adds carbon black and produces in the synthesizing polyester process, though the dispersion of carbon black particle is better, but its complex process, production cost is higher; U.S. Pat 5,385,768 have told about a kind of black polyester film that is coated with the coating production that contains carbon black particle on the polyester film support, the black polyester film that this method is produced, degree of blackness is even, but painting process has increased production cost, and coating in use is easy to generate and comes off; U.S. Pat 6,436,219 have told about the black polyester film of a kind of optical density (OD) at the double-layer coextrusion more than 2.0, and wherein one deck contains carbon black particle, and this film apparent mass is good, but the double-layer coextrusion complex manufacturing; Japanese Patent JP61-237622 and JP62-122734 disclose a kind of black polyester film that contains carbon black particle and inactive particle, but this film has certain light transmission.
The light tight type polyester film of black exists carbon black particle to be difficult to finely dispersed problem aborning, generally adopt at present the black polyester masterbatch of organic dye type to mix the method for extruding with polyester slice and produce black transparent type polyester film, there is light transmission in film; The black polyester film of coating production exists black layer easily to come off, the shortcoming of complex manufacturing.
Summary of the invention
The objective of the invention is, provide a kind of black light tight type polyester film, this polyester film degree of blackness even, light tight, apparent smooth smooth, physical strength is big, thermal characteristics is stable.
Another object of the present invention is, the preparation method of the light tight type polyester film of this black is provided, problems such as this method has solved that the thin film black chromatograph that existing method produces easily comes off, printing opacity, degree of blackness are inhomogeneous, complex manufacturing.
Technical scheme of the present invention is:
The light tight type polyester film of a kind of black, by (1) polyester slice, (2) carbon black type black polyester masterbatch, the compound black polyester masterbatch of (3) carbon black organic dye is formed, and the weight percent content of its each component is:
Polyester slice 65%～97.9%
Carbon black type black polyester masterbatch 2%～20%
The compound black polyester masterbatch 0.1%～15% of carbon black organic dye
A kind of preferred version, the weight percent content of wherein said each component is:
Polyester slice 75%～96%
Carbon black type black polyester masterbatch 2%～15%
The compound black polyester masterbatch 2%～10% of carbon black organic dye
A kind of preferred version, wherein said polyester slice are that limiting viscosity is the ethylene glycol terephthalate of 0.5dL/g～0.9dL/g, and preferred characteristics viscosity is the ethylene glycol terephthalate of 0.6dL/g～0.7dL/g.
A kind of preferred version, wherein said carbon black type black polyester masterbatch is a T1001 type black polyester masterbatch.
A kind of preferred version, the compound black polyester masterbatch of wherein said carbon black organic dye are TBC03 type black polyester masterbatch.
Another technical scheme of the present invention is that the light tight type polyester film of a kind of black is characterized in that its preparation method may further comprise the steps:
(1) with polyester slice, carbon black type black polyester masterbatch, the compound black polyester masterbatch mixing of carbon black organic dye, drying;
(2) dried material is melt extruded, melt is cooled to sheet on slab roller;
(3) with after the sheet preheating that is cooled to, 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) the film heat setting type after will stretching, rolling after cooling obtains the light tight type polyester film of black.
A kind of preferred version, wherein said drying temperature are 150 ℃ ~ 180 ℃.
A kind of preferred version, the wherein said dry sliced temperature that melt extrudes is 260 ℃ ~ 300 ℃.
A kind of preferred version, wherein said film heat setting temperature are 210 ℃ ~ 240 ℃.
The polyester slice that is used for two-way stretch mainly is meant the condenses of diprotic acid and dibasic alcohol, and wherein, diprotic acid can be a straight chain fatty acid, but mainly is aromatic diacid, as terephthalic acid, to phenylene-diacetic acid, to naphthalic acid etc.; Dibasic alcohol mainly is that carbonatoms is 2～4 aliphatic diol, as ethylene glycol, propylene glycol, butyleneglycol etc.Except mentioned component, polyester slice can also be the polyester that adds the modification of materials such as a spot of m-phthalic acid, phthalic acid.Being fit to polyester slice of the present invention is that limiting viscosity is the terephthalic acid of 0.5dL/g～0.9dL/g and the polycondensate ethylene glycol terephthalate of ethylene glycol, and preferred characteristics viscosity is the ethylene glycol terephthalate of 0.6dL/g～0.7dL/g.
In order to give polyester film degree of blackness and non-transparency, can add carbon black type black polyester masterbatch aborning.The main component of carbon black type black polyester masterbatch is polyethylene terephthalate and carbon black, masterbatch can anti-300 ℃ processing temperature, wherein the particle diameter of carbon black particle is at 10nm ~ 500nm, preferred 15nm ~ 100nm, suitable carbon black type black polyester masterbatch of the present invention is the carbon black type black polyester masterbatch by the models such as T1003, T1001 of the state crane chemical fibre of Yin plastic molding and processing plant production, preferred T1001 type carbon black type black polyester masterbatch.
In order to solve the disadvantage that the thin film black colourity that only adopts carbon black type black polyester masterbatch to exist is inhomogeneous, the bar road is arranged, the present invention has also used the compound black polyester masterbatch of carbon black organic dye, being used of these two kinds of black polyester masterbatch, both solved the light transmission that only adopts the compound black polyester masterbatch of carbon black organic dye to exist, solved again the degree of blackness that only adopts carbon black type black polyester masterbatch to exist inhomogeneous, the disadvantage in bar road is arranged, and make product be easy to processing.The compound black polyester masterbatch of carbon black organic dye main component is polyethylene terephthalate, carbon black, quinones dyestuff and auxiliary agent, masterbatch can anti-300 ℃ processing temperature, is fit to the compound black polyester masterbatch of carbon black organic dye of the present invention and optimizes the compound black polyester masterbatch of TBC03 type carbon black organic dye that Guangdong Charming Co., Ltd. produces.
In order to control the roughness of film, adjust the operating performance of film, can select to add the additive section that contains silicon-dioxide, kaolin, lime carbonate, titanium dioxide, ferric oxide filler in right amount according to the rolling situation.
The light tight type polyester film of black of the present invention is made up of polyester slice, carbon black type black polyester masterbatch, the compound black polyester masterbatch of carbon black organic dye, and the weight percent content of its each component is:
Polyester slice 65%～97.9%
Carbon black type black polyester masterbatch 2%～20%
The compound black polyester masterbatch 0.1%～15% of carbon black organic dye
Being fit to a screening formulation of the present invention is:
Polyester slice 75%～96%
Carbon black type black polyester masterbatch 2%～15%
The compound black polyester masterbatch 2%～10% of carbon black organic dye
The thin film black chromatograph that exists in the existing method easily comes off in order to solve, printing opacity, degree of blackness are inhomogeneous, the shortcoming of complex manufacturing, and the preparation method among the present invention may further comprise the steps:
(1) with polyester slice, carbon black type black polyester masterbatch, the compound black polyester masterbatch mixing of carbon black organic dye, drying;
(2) dried material is melt extruded, melt is cooled to sheet on slab roller;
(3) with after the sheet preheating that is cooled to, 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) the film heat setting type after will stretching, rolling after cooling obtains the light tight type polyester film of black.
The concrete preparation process of polyester film of the present invention is: polyester slice, carbon black type black polyester masterbatch, the compound black polyester masterbatch of carbon black organic dye are joined in the blender according to the ratio in the prescription, after mixing, 150 ℃～180 ℃ dryings; Dry slicedly melt extrude under 260 ℃～300 ℃ temperature through forcing machine, polyester fondant flows out to through die head on 15 ℃～30 ℃ the slab roller and is cooled to sheet fast; Sheet enters longitudinal stretching machine, and after preheat roll preheating, Infrared heaters heating, longitudinal stretching is 3.0～3.8 times under the condition that is higher than the polyester second-order transition temperature, then cooling fast; Vertical pulling-on piece enters the cross directional stretch machine, through the preheating zone after 90 ℃～110 ℃ following preheatings, 3.0～4.0 times of cross directional stretchs, 210 ℃～240 ℃ following heat setting types, cooling is after side cut, thickness measuring, rolling obtain the light tight type polyester film of black.This black polyester film is light tight, and degree of blackness is even, and thickness deviation is little, apparent light, and Heat stability is good, physical strength satisfies service requirements.
The light tight type polyester film of black provided by the invention can be widely used in fields such as drum music device, electronic apparatus, packing and decoration.
Embodiment
The present invention is described further below in conjunction with specific embodiment.
Comparative example 1
Prescription:
Ethylene glycol terephthalate 90.0kg
(IV＝0.62dL/g)
T1001 10.0kg
Operation:
Polyester slice 90.0kg, black polyester masterbatch T1001 10.0kg are joined in the blender, after mixing, at 170 ℃ of crystallizing and dryings; Dry slicedly melt extrude under 275 ℃ temperature through forcing machine, polyester fondant flows out to through die head on 30 ℃ the slab roller and is cooled to sheet fast; Sheet enters longitudinal stretching machine, and after preheat roll preheating, Infrared heaters heating, longitudinal stretching is 3.1 times under the condition that is higher than the polyester second-order transition temperature, then cooling fast; Vertical pulling-on piece enters the cross directional stretch machine, through the preheating zone after 95 ℃ of following preheatings, 3.2 times of cross directional stretchs, 230 ℃ of following heat setting types, cooling obtains the light tight polyester film of black after side cut, thickness measuring, central authorities are cut, rolling.Survey its performance (seeing Table).
Comparative example 2
Prescription:
Ethylene glycol terephthalate 90.0kg
(IV＝0.5dL/g)
TBC03 10.0kg
Operation:
Polyester slice 90.0kg, the compound black polyester masterbatch of carbon black organic dye TBC03 10.0kg are joined in the blender, after mixing, at 180 ℃ of crystallizing and dryings; Dry slicedly melt extrude under 260 ℃ temperature through forcing machine, polyester fondant flows out to through die head on 25 ℃ the slab roller and is cooled to sheet fast; Sheet enters longitudinal stretching machine, and after preheat roll preheating, Infrared heaters heating, longitudinal stretching is 3.8 times under the condition that is higher than the polyester second-order transition temperature, then cooling fast; Vertical pulling-on piece enters the cross directional stretch machine, through the preheating zone after 90 ℃ of following preheatings, 4.0 times of cross directional stretchs, 210 ℃ of following heat setting types, cooling obtains the light tight polyester film of black after side cut, thickness measuring, central authorities are cut, rolling.Survey its performance (seeing Table).
Embodiment 1
Prescription:
Ethylene glycol terephthalate 93.9kg
(IV＝0.6dL/g)
T1001 6.0kg
TBC03 0.1kg
Operation:
Polyester slice 93.9kg, black polyester masterbatch T1001 6.0kg, the compound black polyester masterbatch of carbon black organic dye TBC03 0.1kg are joined in the blender, after mixing, at 170 ℃ of crystallizing and dryings; Dry slicedly melt extrude under 260 ℃ temperature through forcing machine, polyester fondant flows out to through die head on 30 ℃ the slab roller and is cooled to sheet fast; Sheet enters longitudinal stretching machine, and after preheat roll preheating, Infrared heaters heating, longitudinal stretching is 3.1 times under the condition that is higher than the polyester second-order transition temperature, then cooling fast; Vertical pulling-on piece enters the cross directional stretch machine, through the preheating zone after 95 ℃ of following preheatings, 3.2 times of cross directional stretchs, 230 ℃ of following heat setting types, cooling obtains the light tight polyester film of black after side cut, thickness measuring, central authorities are cut, rolling.Survey its performance (seeing Table).
Embodiment 2
Prescription:
Ethylene glycol terephthalate 85.9kg
(IV＝0.7dL/g)
T1001 9.0kg
TBC03 5.1kg
Operation:
Polyester slice 85.9kg, black polyester masterbatch T1001 9.0kg, the compound black polyester masterbatch of carbon black organic dye TBC03 5.1kg are joined in the blender, after mixing, at 180 ℃ of crystallizing and dryings; Dry slicedly melt extrude under 275 ℃ temperature through forcing machine, polyester fondant flows out to through die head on 25 ℃ the slab roller and is cooled to sheet fast; Sheet enters longitudinal stretching machine, and after preheat roll preheating, Infrared heaters heating, longitudinal stretching is 3.8 times under the condition that is higher than the polyester second-order transition temperature, then cooling fast; Vertical pulling-on piece enters the cross directional stretch machine, through the preheating zone after 90 ℃ of following preheatings, 4.0 times of cross directional stretchs, 210 ℃ of following heat setting types, cooling obtains the light tight polyester film of black after side cut, thickness measuring, central authorities are cut, rolling.Survey its performance (seeing Table).
Embodiment 3
Prescription:
Ethylene glycol terephthalate 83.0kg
(IV＝0.66dL/g)
T1001 2.0kg
TBC03 15.0kg
Operation:
Polyester slice 83.0kg, black polyester masterbatch T1001 2.0kg, the compound black polyester masterbatch of carbon black organic dye TBC03 15.0kg are joined in the blender, after mixing, at 150 ℃ of crystallizing and dryings; Dry slicedly melt extrude under 300 ℃ temperature through forcing machine, polyester fondant flows out to through die head on 15 ℃ the slab roller and is cooled to sheet fast; Sheet enters longitudinal stretching machine, and after preheat roll preheating, Infrared heaters heating, longitudinal stretching is 3.0 times under the condition that is higher than the polyester second-order transition temperature, then cooling fast; Vertical pulling-on piece enters the cross directional stretch machine, through the preheating zone after 110 ℃ of following preheatings, 3.3 times of cross directional stretchs, 240 ℃ of following heat setting types, cooling obtains the light tight polyester film of black after side cut, thickness measuring, central authorities are cut, rolling.Survey its performance (seeing Table).
Embodiment 4
Prescription:
Ethylene glycol terephthalate 65.0kg
(IV＝0.9dL/g)
T1001 20.0kg
TBC03 15.0kg
Operation:
Polyester slice 65.0kg, black polyester masterbatch T1001 20.0kg, the compound black polyester masterbatch of carbon black organic dye TBC03 15.0kg are joined in the blender, after mixing, at 160 ℃ of crystallizing and dryings; Dry slicedly melt extrude under 260 ℃ temperature through forcing machine, polyester fondant flows out to through die head on 30 ℃ the slab roller and is cooled to sheet fast; Sheet enters longitudinal stretching machine, and after preheat roll preheating, Infrared heaters heating, longitudinal stretching is 3.5 times under the condition that is higher than the polyester second-order transition temperature, then cooling fast; Vertical pulling-on piece enters the cross directional stretch machine, through the preheating zone after 100 ℃ of following preheatings, 3.0 times of cross directional stretchs, 220 ℃ of following heat setting types, cooling obtains the light tight polyester film of black after side cut, thickness measuring, central authorities are cut, rolling.Survey its performance (seeing Table).
Table one
Detection method:
Tensile strength, elongation at break:
Pressing GB/T12683-1990 measures.
Percent thermal shrinkage:
Press the GB/T13541-1992 test.
Thickness:
Use the LG-1 vertical optical meter of Shanghai Optical Instrument Factory No.2 to test.
Degree of blackness and opaqueness: range estimation
Beneficial effect:
Data can be found out from table, the invention solves carbon black and disperse inhomogeneous problem in black polyester film, and the black polyester film rete that has solved existing method production easily comes off, the problem of printing opacity. The black polyester film of producing has uniform degree of blackness, and is light tight, apparent light, and Heat stability is good, intensity is large, meets instructions for use.
Claims (10)
1. light tight type polyester film of black, by (1) polyester slice, (2) carbon black type black polyester masterbatch, the compound black polyester masterbatch of (3) carbon black organic dye is formed, and the weight percent content of its each component is:
Polyester slice 65%～97.9%
Carbon black type black polyester masterbatch 2%～20%
The compound black polyester masterbatch 0.1%～15% of carbon black organic dye.
2. the light tight type polyester film of black according to claim 1 is characterized in that the weight percent content of wherein said each component is:
Polyester slice 75%～96%
Carbon black type black polyester masterbatch 2%～15%
The compound black polyester masterbatch 2%～10% of carbon black organic dye.
3. the light tight type polyester film of black according to claim 1 and 2 is characterized in that, wherein said polyester slice is that limiting viscosity is the ethylene glycol terephthalate of 0.5dL/g～0.9dL/g.
4. the light tight type polyester film of black according to claim 3 is characterized in that, wherein said polyester slice is that limiting viscosity is the ethylene glycol terephthalate of 0.6dL/g～0.7dL/g.
5. the light tight type polyester film of black according to claim 1 and 2 is characterized in that, wherein said carbon black type black polyester masterbatch is a T1001 type black polyester masterbatch.
6. the light tight type polyester film of black according to claim 1 and 2 is characterized in that, the compound black polyester masterbatch of wherein said carbon black organic dye is a TBC03 type black polyester masterbatch.
7. the preparation method of claim 1 or the light tight type polyester film of 2 described black is characterized in that its preparation method may further comprise the steps:
(1) with polyester slice, carbon black type black polyester masterbatch, the compound black polyester masterbatch mixing of carbon black organic dye, drying;
(2) dried material is melt extruded, melt is cooled to sheet on slab roller;
(3) with after the sheet preheating that is cooled to, 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) the film heat setting type after will stretching, rolling after cooling obtains the light tight type polyester film of black.
8. the preparation method of the light tight type polyester film of black according to claim 7 is characterized in that, wherein said drying temperature is 150 ℃ ~ 180 ℃.
9. the preparation method of the light tight type polyester film of black according to claim 7 is characterized in that, the wherein said dry sliced temperature that melt extrudes is 260 ℃ ~ 300 ℃.
10. the preparation method of the light tight type polyester film of black according to claim 7 is characterized in that, wherein said film heat setting temperature is 210 ℃ ~ 240 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410039197 CN1286911C (en) | 2004-02-24 | 2004-02-24 | Black lighttight type polyester film and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410039197 CN1286911C (en) | 2004-02-24 | 2004-02-24 | Black lighttight type polyester film and preparation method |
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| Publication Number | Publication Date |
|---|---|
| CN1660937A CN1660937A (en) | 2005-08-31 |
| CN1286911C true CN1286911C (en) | 2006-11-29 |
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| EP2039728B1 (en) * | 2007-09-18 | 2012-05-02 | LANXESS Deutschland GmbH | Red paint mixture |
| CN101260197B (en) * | 2008-04-07 | 2011-06-15 | 常州绝缘材料总厂有限公司 | Black polyester solar energy battery back film and preparation method thereof |
| CN105907047A (en) * | 2016-02-23 | 2016-08-31 | 天津世起科技发展有限公司 | Leather-simulative polyester film and manufacturing method thereof |
| CN106396087B (en) * | 2016-06-07 | 2019-03-15 | 四川悦承环保节能科技有限公司 | A kind of modified flowing biologic packing material and preparation method thereof and application |
| CN114619725A (en) * | 2022-03-15 | 2022-06-14 | 浙江锂盾新能源材料有限公司 | Black shading type lithium ion battery composite packaging aluminum-plastic film |
| CN115746511A (en) * | 2022-11-02 | 2023-03-07 | 安徽国风新材料股份有限公司 | Black BOPET film and preparation method thereof |
| CN116694038B (en) * | 2023-06-16 | 2024-02-09 | 佛山杜邦鸿基薄膜有限公司 | Polyester film for polarizer release film and preparation method thereof |
-
2004
- 2004-02-24 CN CN 200410039197 patent/CN1286911C/en not_active Expired - Lifetime
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|---|---|
| CN1660937A (en) | 2005-08-31 |
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Owner name: CHINA LUCKY GROUP CORPORATION Free format text: FORMER NAME: CHINESE LEKAI FILM GROUP CO |
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Address after: South Street, new urban lucky 071054 Hebei province Baoding City No. 6 Patentee after: CHINA LUCKY Group Corp. Patentee after: BAODING LUCKY FILM Co.,Ltd. Address before: 071054 No. 1 Jianshe South Road, Hebei, Baoding Patentee before: CHINA LUCKY FILM Group Corp. Patentee before: BAODING LUCKY FILM Co.,Ltd. |
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Address after: South Street, new urban lucky 071054 Hebei province Baoding City No. 6 Co-patentee after: LUCKY HEALTHCARE CO.,LTD. Patentee after: CHINA LUCKY Group Corp. Address before: South Street, new urban lucky 071054 Hebei province Baoding City No. 6 Co-patentee before: BAODING LUCKY FILM Co.,Ltd. Patentee before: CHINA LUCKY GROUP Corp. |
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Granted publication date: 20061129 |