Anti-ultraviolet bidirectional stretching polyester film and preparation method thereof

A technology of biaxially stretched polyester and anti-ultraviolet absorber, which is applied in the direction of chemical instruments and methods, applications, household appliances, etc., can solve the problem that the PET film has not yet met the customer's expected requirements, the mechanical strength and the nominal strain at break are reduced, and the gloss Reduce the temperature and other problems, achieve excellent UV resistance, excellent heat sealing performance, and reduce the effect of aging time

Inactive Publication Date: 2018-03-27
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyester products for outdoor use will inevitably be affected by external environmental factors (such as light, heat and water, etc.) during use, and aging will occur, resulting in a decline in performance, such as increased haze and reduced gloss. , mechanical strength and fracture nominal strain reduction, etc.
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Method used

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  • Anti-ultraviolet bidirectional stretching polyester film and preparation method thereof
  • Anti-ultraviolet bidirectional stretching polyester film and preparation method thereof
  • Anti-ultraviolet bidirectional stretching polyester film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Mix polyethylene terephthalate slices and anti-ultraviolet absorbing agent, and dry them on a fluidized bed at 130°C for 40 minutes, and then dry them in a drying tower at 130°C for 2 hours; The moisture content of the slices is 50ppm;

[0037] (2) Add the mixed chips dried in step (1) into the main extruder and heat them into a molten state as the main extruded melt of the core layer. The temperature of the main extruder is 265°C; Disc filter filter;

[0038] (3) Add polyethylene terephthalate slices, anti-ultraviolet absorbers and anti-blocking agents into the auxiliary extruder to obtain the upper surface melt after melting and vacuuming. The temperature of the auxiliary extruder is 265 ℃;

[0039] (4) Add modified polyethylene terephthalate slices and anti-blocking agent into the auxiliary extruder to obtain the lower surface melt after melting and vacuuming, and the temperature of the auxiliary extruder is 230°C;

[0040] (5) The main extruded melt, the uppe...

Embodiment 2

[0047] (1) Mix the polyethylene terephthalate chips and the anti-ultraviolet absorbing agent, and dry them on a fluidized bed at 150°C for 41 minutes, and then dry them in a drying tower at 150°C for 6 hours; The moisture content of the slices is 45ppm;

[0048] (2) Add the mixed chips dried in step (1) into the main extruder and heat them into a molten state as the main extruded melt of the core layer. The temperature of the main extruder is 285°C; Disc filter filter;

[0049] (3) Add polyethylene terephthalate slices, anti-ultraviolet absorbers and anti-blocking agents into the auxiliary extruder to obtain the upper surface melt after melting and vacuuming. The temperature of the auxiliary extruder is 285 ℃;

[0050] (4) Add the modified polyethylene terephthalate chips and anti-blocking agent into the auxiliary extruder to obtain the lower surface melt after melting and vacuuming, and the temperature of the auxiliary extruder is 260 ° C;

[0051] (5) Merge the main extru...

Embodiment 3

[0058] (1) Mix the polyethylene terephthalate chip and the anti-ultraviolet absorber, and dry it on a fluidized bed at 180°C for 42 minutes, and then dry it in a drying tower at 180°C for 8 hours; The moisture content of the slices is 40ppm;

[0059] (2) Add the mixed chips dried in step (1) into the main extruder and heat them into a molten state as the main extruded melt of the core layer. The temperature of the main extruder is 305°C; Disc filter filter;

[0060] (3) Add polyethylene terephthalate slices, anti-ultraviolet absorbers and anti-blocking agents into the auxiliary extruder to obtain the upper surface melt after melting and vacuuming. The temperature of the auxiliary extruder is 305 ℃;

[0061] (4) Add the modified polyethylene terephthalate chips and anti-blocking agent into the auxiliary extruder to obtain the lower surface melt after melting and vacuuming, and the temperature of the auxiliary extruder is 290 ° C;

[0062] (5) The main extruded melt, the uppe...

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Abstract

The invention relates to an anti-ultraviolet bidirectional stretching polyester film and a preparation method thereof. The an anti-ultraviolet bidirectional stretching polyester film is composed of anupper surface layer, a core layer, and a lower surface layer. The core layer is composed of an anti-ultraviolet absorbent and polyethylene glycol terephthalate slice; the upper surface layer is composed of the anti-ultraviolet absorbent, an anti-adhesion agent, and the polyethylene glycol terephthalate slice; and the lower surface layer is composed of the anti-adhesion agent and the modified polyethylene glycol terephthalate slice. The product has the characteristics of UV resistance, heat sealing, high intensity, hydrolysis resistance, corrosion resistance, and high thermostability, can be widely used in the fields of outdoor product package and building, and belongs to the functional film, performance is outstanding, cost is low, and the method has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of films, in particular to a biaxially stretched polyester film for anti-ultraviolet and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) has good fiber-forming properties, mechanical properties, wear resistance, creep resistance and electrical insulation, and has a wide range of applications in the fields of fibers, films, polyester bottles, engineering plastics, etc. Applications. However, polyester products for outdoor use will inevitably be affected by external environmental factors (such as light, heat and water, etc.) during use, and aging will occur, resulting in a decline in performance, such as increased haze and reduced gloss. , mechanical strength and fracture nominal strain reduction, etc. At present, there are many kinds of ordinary PET films on the market, and the product performance has its own emphasis. In the field of anti-ultraviolet, although v...

Claims

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Application Information

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IPC IPC(8): B32B27/36B32B27/06B32B27/18B29D7/01B29K67/00
CPCB32B27/36B29D7/01B29K2067/003B32B27/08B32B27/18B32B2250/244B32B2307/71B32B2307/746
Inventor 施中华
Owner ANHUI GUOFENG PLASTIC
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