CN103231562B - A kind of biaxial stretching polyester height bright mirror surface film and making method thereof - Google Patents
A kind of biaxial stretching polyester height bright mirror surface film and making method thereof Download PDFInfo
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- CN103231562B CN103231562B CN201310132336.9A CN201310132336A CN103231562B CN 103231562 B CN103231562 B CN 103231562B CN 201310132336 A CN201310132336 A CN 201310132336A CN 103231562 B CN103231562 B CN 103231562B
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Abstract
The present invention discloses a kind of two-way stretch height light polyester minute surface film and making method thereof, film take polyester as the biaxially oriented polyester film of main component, it is made up of upper epidermis, core layer and layer, group part of its center core layer is optical grade polyester slice, and the group part on upper and lower top layer is formed by organic Ammonia antiblocking agent and optical grade polyester slice; Film mist degree is��1.3%, transparency >=92%, glossiness >=140. The film of the present invention has the effect of high glossiness, low haze, high brightness, has extremely good optical property and outward appearance.
Description
Technical field
The present invention relates to a kind of two-way stretch height light polyester film and making method thereof.
Background technology
Along with Economic development and living standards of the people improve, commodity packaging is more and more to safety and environmental protection, attractive in appearanceization, superior development. BOPET polyester film has the features such as intensity height, good rigidly, transparent, glossiness height; Odorless, tasteless, colourless, nontoxic, outstanding obdurability; Having fabulous wear resistance, folding resistance, pinhole resistance and tear strength etc., BOPET also has good thermotolerance, excellent boiling resistance, resistance to cryogenic freezing, good oil-proofness and chemical-resistant etc.
The market such as household electrical appliance, Fashion and Accessories, electronic product, precision instrument in recent years, the demand of high light polyester film is increasing, and therefore the development of high light polyester film is badly in need of carrying out. Development high light polyester film can improve the state of the art of China's film industry, shortens the technology gap with developed country, it is to increase value-added content of product, optimizes the film industrial structure, for enterprise creates more economic benefit, improve the standard of living of the people simultaneously.
BOPET mirror film material makes BOPET film have the performances such as high glossiness, high strength and low haze by formulating of recipe and technique adjustment, there is excellent optical property, greatly improve film to the reflectivity of light, it is mainly used in high-grade vacuum aluminized film and radium-shine laser anti-counterfeit film etc., the product is made to have effect as minute surface, it is to increase the decoration of product and antifalsification.
Summary of the invention
The shortcomings such as, mist degree height low for existing polyester film glossiness, the present invention provides a kind of has high glossiness, low haze, the two-way stretch height light polyester film of high light and making method thereof.
A kind of two-way stretch height light polyester film, it is composited by upper epidermis, core layer and layer, described core layer consist of optical grade polyester slice, the composition on described upper and lower top layer is organic Ammonia antiblocking agent of 5% ~ 10wt% and the optical grade polyester slice of 90% ~ 95wt%.
Preferably, the weight on described upper and lower top layer respectively accounts for the 10% ~ 15% of polyester film gross weight, and core layer weight accounts for the 70% ~ 80% of polyester film gross weight.
Organic Ammonia antiblocking agent in described upper and lower top layer can be stearic amide, erucicamide, amine hydroxybenzene or ethylene bis stearic acid amide etc.
The making method of the two-way stretch height light polyester film of the present invention, carries out as follows:
Optical grade polyester slice through the temperature of fluidized-bed with 135��160 DEG C, dry 3��5 hours dried feed; Described dried feed is heated into molten state in melt extruder, enters metering forcing machine after filtering, obtains core layer melt; Respectively in two auxiliary twin screw extruders by optical grade polyester slice and organic Ammonia antiblocking agent after melting, vacuumizing process, the moisture content being filtered to remove in raw material and impurity obtain the auxiliary crowded melt respectively as upper epidermis and layer; Core layer melt and two layers of auxiliary crowded melt converge in three layers of mould head extrudes blend melt, and converging extrusion temperature is 270��290 DEG C;
B), for the blend melt extruded in described step a), form slab through sharp cooling roll and tank cooling, then slab is cooled to less than 30 DEG C;
C), slab is through 80��100 DEG C of preheating longitudinal stretchings and less than 40 DEG C sizings; Enter 80��120 DEG C of preheating cross directional stretchs and 160��200 DEG C of heat treatments again;
D), by step c) gained film entering tractor after deburring, film flattens through take off roll cooling; The film that cooling flattens enters online cutting machine and carries out cutting, batches, makes high light polyester film.
Described core layer is extruded by main extruder; Upper and lower top layer is extruded respectively by two auxiliary forcing machines.
Film described in step d) can carry out corona treatment after take off roll cooling flattens, and corona treatment intensity can be 8 ~ 9W/m2; This film single or double carries out corona treatment, or two sides does not carry out corona treatment.
The present invention is by selecting organic amino family macromolecule as antiblocking additive, change the crystallization rate in polyester film production process, thus polyester molecule structure is changed, obtain high glossiness, low haze, high light, there is extremely good optical property and the polyester film of outward appearance simultaneously. The high light polyester film thickness 10��30 microns of the present invention, film clarity >=92%, glossiness >=135, mist degree��1.2%, effectively improve the optical property of polyester film.
Embodiment
Further the present invention is further described below in conjunction with specific examples:
Embodiment 1
A kind of two-way stretch height light polyester film, is made up of upper epidermis, core layer and layer, its center core layer consist of optical grade polyester slice, the composition on upper and lower top layer is the stearic amide of 5wt% and the optical grade polyester slice of 95wt%; And the weight on upper and lower top layer respectively accounts for the 10% of polyester film gross weight, core layer weight accounts for the 80% of polyester film gross weight.
In upper and lower high light top layer, the particle diameter of organic Ammonia antiblocking agent molecule is 1 ~ 2 micron, and content is 4000 ~ 5000ppm.
Make the method for two-way stretch height light polyester film, comprise the steps:
A, optical grade polyester obtain dried feed in 4��5 hours through fluidized-bed with the temperature drying of 140��160 DEG C; Described dried feed is heated into molten state in melt extruder, enters metering forcing machine after filtering, obtains core layer melt; Respectively in two auxiliary twin screw extruders by optical grade polyester slice and organic Ammonia antiblocking agent after melting, vacuumizing process, the moisture content being filtered to remove in raw material and impurity obtain the auxiliary crowded melt respectively as upper epidermis and layer; Core layer melt and auxiliary crowded melt converge in three layers of mould head extrudes blend melt, and converging extrusion temperature is 270��290 DEG C;
B, for the blend melt extruded in described step a, form slab through two-sided cooling, then slab is cooled to less than 30 DEG C;
C, by slab through 80��100 DEG C of preheating longitudinal stretchings and less than 40 DEG C sizings;
D, polyester sheet enter 80��120 DEG C of preheating cross directional stretchs and 160��200 DEG C of heat treatments;
E, the gained film in steps d being entered after deburring tractor, film flattens through take off roll cooling, rolling; The film of rolling enters cutting machine and carries out cutting, batches, makes 10��30 microns high light polyester films, transparency >=92%, glossiness >=135, mist degree��1.2%.
Embodiment 2
A kind of two-way stretch height light polyester film, is made up of upper epidermis, core layer and layer, its center core layer consist of optical grade polyester slice, the composition on upper and lower top layer is the erucicamide of 10wt% and the optical grade polyester slice of 90wt%; And the weight on upper and lower top layer respectively accounts for the 15% of polyester film gross weight, core layer weight accounts for the 70% of polyester film gross weight; In upper and lower high light top layer, the particle diameter of organic Ammonia antiblocking agent molecule is 1 ~ 2 micron, and content is 4000 ~ 5000ppm. The making method of two-way stretch height light polyester film, with embodiment 1, makes 10��30 microns high light polyester films, transparency >=92%, glossiness >=135, mist degree��1.2%.
Embodiment 3
A kind of two-way stretch height light polyester film, is made up of upper epidermis, core layer and layer, its center core layer consist of optical grade polyester slice, the composition on upper and lower top layer is the amine hydroxybenzene of 8wt% and the optical grade polyester slice of 92wt%; And the weight on upper and lower top layer respectively accounts for the 12% of polyester film gross weight, core layer weight accounts for the 76% of polyester film gross weight; In upper and lower high light top layer, the particle diameter of organic Ammonia antiblocking agent molecule is 1 ~ 2 micron, and content is 4000 ~ 5000ppm. The making method of two-way stretch height light polyester film, with embodiment 1, makes 10��30 microns high light polyester films, transparency >=92%, glossiness >=135, mist degree��1.2%.
Claims (4)
1. a two-way stretch high brightness polyester film, it is composited by upper epidermis, core layer and layer, described core layer is made up of optical grade polyester slice, described upper and lower top layer forms by organic Ammonia antiblocking agent of 5% ~ 10wt% and the optical grade polyester slice of 90% ~ 95wt%, and described organic Ammonia antiblocking agent is stearic amide, erucicamide, amine hydroxybenzene or ethylene bis stearic acid amide.
2. a kind of two-way stretch high brightness polyester film according to claim 1, it is characterised in that: the weight on described upper and lower top layer respectively accounts for the 10% ~ 15% of polyester film gross weight, and core layer weight accounts for the 70% ~ 80% of polyester film gross weight.
3. make the method for the two-way stretch high brightness polyester film described in the arbitrary item of claim 1-2, it is characterised in that: carry out as follows:
A), optical grade polyester slice through the temperature of fluidized-bed with 135��160 DEG C, dry 3��5 hours dried feed; Described dried feed is heated into molten state in melt extruder, enters metering forcing machine after filtering, obtains core layer melt; Respectively in two auxiliary twin screw extruders by optical grade polyester slice and organic Ammonia antiblocking agent after melting, vacuumizing process, the moisture content being filtered to remove in raw material and impurity obtain the auxiliary crowded melt respectively as upper epidermis and layer; Core layer melt and two layers of auxiliary crowded melt converge in three layers of mould head extrudes blend melt, and converging extrusion temperature is 270��290 DEG C;
B), for the blend melt extruded in described step a), form slab through sharp cooling roll and tank cooling, then slab is cooled to less than 30 DEG C;
C), slab is through 80��100 DEG C of preheating longitudinal stretchings and less than 40 DEG C sizings; Enter 80��120 DEG C of preheating cross directional stretchs and 160��200 DEG C of heat treatments again;
D), by step c) gained polyester film entering tractor after deburring, polyester film flattens through take off roll cooling; The polyester film that cooling flattens enters online cutting machine and carries out cutting, batches, makes high light polyester film.
4. making method according to claim 3, it is characterised in that: polyester film described in step d) carries out corona treatment after take off roll cooling flattens.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310132336.9A CN103231562B (en) | 2013-04-17 | 2013-04-17 | A kind of biaxial stretching polyester height bright mirror surface film and making method thereof |
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| CN201310132336.9A CN103231562B (en) | 2013-04-17 | 2013-04-17 | A kind of biaxial stretching polyester height bright mirror surface film and making method thereof |
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| CN103231562B true CN103231562B (en) | 2016-06-01 |
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| CN105196653B (en) * | 2015-09-23 | 2017-06-23 | 安徽国风塑业股份有限公司 | A kind of fenestrated membrane polyester base film and its manufacture craft |
| CN106965519B (en) * | 2017-04-24 | 2019-10-25 | 浙江永盛科技有限公司 | High light, low friction, fluorescence BOPET polyester base film and its production technology |
| CN108859464A (en) * | 2018-07-27 | 2018-11-23 | 福融辉实业（福建）有限公司 | A kind of efficient transfer membrane and preparation method thereof |
| CN109591310B (en) * | 2018-11-29 | 2021-05-07 | 烟台丰福莱薄膜科技有限公司 | Preparation method of ultrathin super-mirror-surface polypropylene aluminized substrate film |
| CN114578465B (en) * | 2022-04-08 | 2022-08-26 | 绍兴翔宇绿色包装有限公司 | PET-based diffusion film and preparation method thereof |
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| US8071695B2 (en) * | 2004-11-12 | 2011-12-06 | Eastman Chemical Company | Polyeste blends with improved stress whitening for film and sheet applications |
| CN101263171B (en) * | 2005-09-14 | 2015-07-08 | 旭化成化学株式会社 | Block copolymer and process for production of thermally shrinkable film |
| CN101293412A (en) * | 2008-05-29 | 2008-10-29 | 常州钟恒新材料有限公司 | Special optical level polyester film and production method thereof |
| US8658069B2 (en) * | 2009-11-09 | 2014-02-25 | Basf Se | Method for producing shrink films |
| CN102924905B (en) * | 2012-10-22 | 2016-03-02 | 佛山佛塑科技集团股份有限公司 | A kind of two-way stretch sub-light BOPA film and preparation method thereof |
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Address after: 230088 No.1000, Mingchuan Road, high tech Zone, Hefei City, Anhui Province Patentee after: Anhui Guofeng New Material Co.,Ltd. Address before: Tianzhi Road, national high tech Industrial Development Zone, Hefei City, Anhui Province, No. 36 230088 Patentee before: ANHUI GUOFENG PLASTIC CO.,LTD. |