CN103231562A - Biaxial stretching polyester high brightness mirror surface film and preparation method thereof - Google Patents
Biaxial stretching polyester high brightness mirror surface film and preparation method thereof Download PDFInfo
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- CN103231562A CN103231562A CN2013101323369A CN201310132336A CN103231562A CN 103231562 A CN103231562 A CN 103231562A CN 2013101323369 A CN2013101323369 A CN 2013101323369A CN 201310132336 A CN201310132336 A CN 201310132336A CN 103231562 A CN103231562 A CN 103231562A
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Abstract
The invention discloses a biaxial stretching high brightness polyester mirror surface film and a preparation method thereof. The film is a biaxial stretching polyester film adopting a polyester as a main component, and comprises an upper surface layer, a core layer and a lower surface layer, wherein a component of the core layer is an optical grade polyester slice, components of the upper surface layer and the lower surface layer comprise an organic ammonia anti-adhesion agent and an optical grade polyester slice, a fog level of the film is less than or equal to 1.3%, transparency of the film is more than or equal to 92%, and a glossiness of the film is more than or equal to 140. The film has characteristics of high glossiness, low fog level, high brightness, excellent optical performance and excellent appearance.
Description
Technical field
The present invention relates to high bright polyester film of a kind of biaxial tension and preparation 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 protectionization, attractive in appearanceization, superior development.The BOPET polyester film has characteristics such as intensity height, good rigidly, transparent, glossiness height; Do not have smell, tasteless, colourless, nontoxic, outstanding obdurability; Excellent abrasion resistance, folding resistance, anti-pin hole and tear resistance etc. are arranged, and BOPET also has boiling resistance, the low temperature resistant freezing property of good hear resistance, excellence, good oil resistivity and chemical-resistant etc.
Markets such as household electrical appliance, Fashion and Accessories, electronic product, precision instrument are increasing to the demand of the bright polyester film of height in recent years, and therefore the development of high bright polyester film is badly in need of carrying out.Develop the technical merit that high bright polyester film can improve China's film industry, the technological gap of shortening and developed country improves value-added content of product, optimizes the film industrial structure, for enterprise creates more economic benefit, improves the people's living standard simultaneously.
BOPET mirror film material makes the BOPET film have performances such as high gloss, high strength and low haze by the adjustment of prescription design and processes, has excellent optical property, improved the reflectivity of film to light greatly, be mainly used in high-grade vacuum aluminized film and radium-shine laser anti-counterfeit film etc., make product have effect as the minute surface, improved the ornamental and antifalsification of product.
Summary of the invention
Shortcomings such as, mist degree height low at existing polyester film glossiness the invention provides a kind of high bright polyester film of biaxial tension with high gloss, low haze, high light and preparation method thereof.
The high bright polyester film of a kind of biaxial tension, be composited by upper epidermis, sandwich layer and following top layer, described sandwich layer consist of the 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 10% ~ 15% of polyester film gross weight, and sandwich layer weight accounts for 70% ~ 80% of polyester film gross weight.
Organic Ammonia antiblocking agent in the described upper and lower top layer can be stearic amide, erucyl amide, oleamide or ethylene bis stearic acid amide etc.
The preparation method of the high bright polyester film of biaxial tension of the present invention, carry out as follows:
The optical grade polyester slice is through the temperature of fluid bed with 135～160 ℃, and drying got dried feed in 3～5 hours; Described dried feed is heated into molten condition in melt extruding machine, enter the metering extruder after filtering, gets the sandwich layer melt; Respectively in two auxiliary double screw extruders with optical grade polyester slice and organic Ammonia antiblocking agent through after fusion, vacuumizing processing, the moisture content that removes by filter in the raw material obtains respectively as the crowded melt of assisting of upper epidermis and following top layer with impurity; Sandwich layer melt and two-layer auxilliary crowded melt converge in three layers of die head extrudes mixed melt, and converging extrusion temperature is 270～290 ℃;
B), for the mixed melt of extruding in the described step a), cooling forms the casting sheet through sharp cooling roll and tank, will cast sheet again and be cooled to below 30 ℃;
C), the casting sheet is through 80～100 ℃ of preheating longitudinal stretchings and typing below 40 ℃; Enter 80～120 ℃ of preheating cross directional stretch and 160～200 ℃ of typing processing again;
D), step c) gained film is entered hauling machine after deburring, film flattens through the carry-over pinch rolls cooling; The film that cooling flattens enters online cutting machine and cuts, batches, makes high bright polyester film.
Described sandwich layer is extruded by main extruder; Upper and lower top layer is extruded respectively by two auxiliary extruders.
The described film of step d) can carry out sided corona treatment after the carry-over pinch rolls cooling flattens, sided corona treatment intensity can be 8 ~ 9W/m
2This film single or double carries out sided corona treatment, and perhaps sided corona treatment is not carried out on the two sides.
The present invention is by selecting for use the organic amino family macromolecule as the anti-stick additive that connects, change the crystalline rate in the polyester film production process, thereby the polyester molecule structure is changed, obtained high gloss, low haze, high light, the polyester film that has splendid optical property and outward appearance simultaneously.10～30 microns of the bright polyester film thickness of height of the present invention, film clarity 〉=92%, glossiness 〉=135, mist degree≤1.2% have effectively improved the optical property of polyester film.
The specific embodiment
Further the present invention is further described below in conjunction with instantiation:
Embodiment 1
The high bright polyester film of a kind of biaxial tension is made of upper epidermis, sandwich layer and following top layer, its center core layer consist of the 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 10% of polyester film gross weight, and sandwich layer weight accounts for 80% of polyester film gross weight.
In the bright top layer of upper and lower height, the particle diameter of organic Ammonia antiblocking agent molecule is 1 ~ 2 micron, and content is 4000 ~ 5000ppm.
Make the method for the high bright polyester film of biaxial tension, comprise the steps:
A, optical grade polyester process fluid bed got dried feed in 4～5 hours with 140～160 ℃ temperature drying; Described dried feed is heated into molten condition in melt extruding machine, enter the metering extruder after filtering, gets the sandwich layer melt; Respectively in two auxiliary double screw extruders with optical grade polyester slice and organic Ammonia antiblocking agent through after fusion, vacuumizing processing, the moisture content that removes by filter in the raw material obtains respectively as the crowded melt of assisting of upper epidermis and following top layer with impurity; The sandwich layer melt converges in three layers of die head with auxilliary crowded melt extrudes mixed melt, and converging extrusion temperature is 270～290 ℃;
B, for the mixed melt of extruding among the described step a, form the casting sheet through two-sided cooling, will cast sheet again and be cooled to below 30 ℃;
C, will cast sheet through 80～100 ℃ of preheating longitudinal stretchings and below 40 ℃ the typing;
D, polyester sheet enter 80～120 ℃ of preheating cross directional stretch and 160～200 ℃ of typings are handled;
E, the gained film in the steps d is entered hauling machine after deburring, film flattens rolling through the carry-over pinch rolls cooling; The film of rolling enters cutting machine and cuts, batches, makes 10～30 microns high bright polyester films, transparency 〉=92%, glossiness 〉=135, mist degree≤1.2%.
Embodiment 2
The high bright polyester film of a kind of biaxial tension is made of upper epidermis, sandwich layer and following top layer, its center core layer consist of the optical grade polyester slice, the composition on upper and lower top layer is the erucyl amide of 10wt% and the optical grade polyester slice of 90wt%; And the weight on upper and lower top layer respectively accounts for 15% of polyester film gross weight, and sandwich layer weight accounts for 70% of polyester film gross weight; In the bright top layer of upper and lower height, the particle diameter of organic Ammonia antiblocking agent molecule is 1 ~ 2 micron, and content is 4000 ~ 5000ppm.The preparation method of the high bright polyester film of biaxial tension is made 10～30 microns high bright polyester films, transparency 〉=92%, glossiness 〉=135, mist degree≤1.2% with embodiment 1.
Embodiment 3
The high bright polyester film of a kind of biaxial tension is made of upper epidermis, sandwich layer and following top layer, its center core layer consist of the optical grade polyester slice, the composition on upper and lower top layer is the oleamide of 8wt% and the optical grade polyester slice of 92wt%; And the weight on upper and lower top layer respectively accounts for 12% of polyester film gross weight, and sandwich layer weight accounts for 76% of polyester film gross weight; In the bright top layer of upper and lower height, the particle diameter of organic Ammonia antiblocking agent molecule is 1 ~ 2 micron, and content is 4000 ~ 5000ppm.The preparation method of the high bright polyester film of biaxial tension is made 10～30 microns high bright polyester films, transparency 〉=92%, glossiness 〉=135, mist degree≤1.2% with embodiment 1.
Claims (4)
1. biaxial tension high brightness polyester film, be composited by upper epidermis, sandwich layer and following top layer, described sandwich layer consist of the 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%.
2. a kind of biaxial tension high brightness polyester film according to claim 1, it is characterized in that: the weight on described upper and lower top layer respectively accounts for 10% ~ 15% of polyester film gross weight, and sandwich layer weight accounts for 70% ~ 80% of polyester film gross weight.
3. make the method for each described biaxial tension high brightness polyester film of claim 1-3, it is characterized in that: carry out as follows:
A), the optical grade polyester slice through fluid bed with 135～160 ℃ temperature, dry 3～5 hours dried feed; Described dried feed is heated into molten condition in melt extruding machine, enter the metering extruder after filtering, gets the sandwich layer melt; Respectively in two auxiliary double screw extruders with optical grade polyester slice and organic Ammonia antiblocking agent through after fusion, vacuumizing processing, the moisture content that removes by filter in the raw material obtains respectively as the crowded melt of assisting of upper epidermis and following top layer with impurity; Sandwich layer melt and two-layer auxilliary crowded melt converge in three layers of die head extrudes mixed melt, and converging extrusion temperature is 270～290 ℃;
B), for the mixed melt of extruding in the described step a), cooling forms the casting sheet through sharp cooling roll and tank, will cast sheet again and be cooled to below 30 ℃;
C), the casting sheet is through 80～100 ℃ of preheating longitudinal stretchings and typing below 40 ℃; Enter 80～120 ℃ of preheating cross directional stretch and 160～200 ℃ of typing processing again;
D), step c) gained film is entered hauling machine after deburring, film flattens through the carry-over pinch rolls cooling; The film that cooling flattens enters online cutting machine and cuts, batches, makes high bright polyester film.
4. preparation method according to claim 4 is characterized in that: the described film of step d) carries out sided corona treatment after the carry-over pinch rolls cooling flattens.
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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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Cited By (5)
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| CN105196653A (en) * | 2015-09-23 | 2015-12-30 | 安徽国风塑业股份有限公司 | Polyester base film for window film and manufacturing technology of polyester base film |
| CN106965519A (en) * | 2017-04-24 | 2017-07-21 | 浙江永盛薄膜科技有限公司 | High light, low friction, fluorescence BOPET polyester base films 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 |
| CN109591310A (en) * | 2018-11-29 | 2019-04-09 | 烟台丰福莱薄膜科技有限公司 | A kind of polypropylene of ultra-thin super mirror surface is aluminized base film preparation method |
| CN114578465A (en) * | 2022-04-08 | 2022-06-03 | 绍兴翔宇绿色包装有限公司 | PET-based diffusion film and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105196653A (en) * | 2015-09-23 | 2015-12-30 | 安徽国风塑业股份有限公司 | Polyester base film for window film and manufacturing technology of polyester base film |
| CN106965519A (en) * | 2017-04-24 | 2017-07-21 | 浙江永盛薄膜科技有限公司 | High light, low friction, fluorescence BOPET polyester base films and its production technology |
| 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 |
| CN109591310A (en) * | 2018-11-29 | 2019-04-09 | 烟台丰福莱薄膜科技有限公司 | A kind of polypropylene of ultra-thin super mirror surface is aluminized base film preparation method |
| 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 |
| CN114578465A (en) * | 2022-04-08 | 2022-06-03 | 绍兴翔宇绿色包装有限公司 | PET-based diffusion film and preparation method thereof |
| 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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| CN103231562B (en) | 2016-06-01 |
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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. |