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A kind of matt biaxially stretched polyester film and preparation method thereof

A biaxially stretched polyester and film technology, applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., to achieve the effect of improving the scattering effect

Active Publication Date: 2020-11-03
ZHEJIANG HESHUN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies in the above-mentioned prior art, and to provide a matte biaxially stretched film with simple preparation process based on the basic principle that the glossiness of the film surface is related to the degree of diffuse reflection of light on the film surface. The preparation method of the polyester film, the matt polyester film prepared by this method, compared with the existing matt polyester film, has the characteristics of low gloss and the glossiness can be adjusted conveniently

Method used

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  • A kind of matt biaxially stretched polyester film and preparation method thereof
  • A kind of matt biaxially stretched polyester film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1, add silicon dioxide, PET powder and silane coupling agent to the mixer at a mass percentage of 1%, 98.7% and 0.3% respectively, first mix at a speed of 400r / min for 5min, and then adjust the speed to Mix at 2000r / min for 15min, then mix at 400r / min for 5min, and finally put the mixed raw materials into a twin-screw extruder and extrude to prepare a matte masterbatch;

[0030] Step 2, the polyester film is prepared by three-layer co-extrusion biaxial stretching equipment, the core layer 1 raw material is sent to the corresponding feed bin of the main extruder through the suction system, the ratio of raw materials is controlled by a metering pump, and fed to In the main extruder, after melting, vacuuming and filtering, the moisture, oligomers and impurities in the raw material melt are removed and used as the main extrusion melt; the raw material of the matte layer 2 is sent to the auxiliary extrusion through the suction system In the corresponding silo of the mac...

Embodiment 2

[0042] Step 1: Add silicon dioxide, PET powder and silane coupling agent to the mixer at a mass percentage of 10.5%, 88.6% and 0.9% respectively, mix at a speed of 450r / min for 7 minutes, and then adjust the speed to Mix at 2500r / min for 18min, then mix at 450r / min for 7min, and finally put the mixed raw materials into a twin-screw extruder and extrude to prepare a matte masterbatch;

[0043] Step 2, the polyester film is prepared by three-layer co-extrusion biaxial stretching equipment, the core layer 1 raw material is sent to the corresponding feed bin of the main extruder through the suction system, the ratio of raw materials is controlled by a metering pump, and fed to In the main extruder, after melting, vacuuming and filtering, the moisture, oligomers and impurities in the raw material melt are removed and used as the main extrusion melt; the raw material of the matt layer 2 is sent to the auxiliary extrusion through the suction system In the corresponding silo of the ma...

Embodiment 3

[0055] Step 1, add silicon dioxide, PET powder and silane coupling agent to the mixer at a mass percentage of 20%, 78.5% and 1.5% respectively, first mix at a speed of 500r / min for 10min, and then adjust the speed to Mix at 3000r / min for 20 minutes, then mix at a speed of 500r / min for 8 minutes, and finally put the mixed raw materials into a twin-screw extruder and extrude to prepare a matt masterbatch;

[0056] Step 2, the polyester film is prepared by three-layer co-extrusion biaxial stretching equipment, the core layer 1 raw material is sent to the corresponding feed bin of the main extruder through the suction system, the ratio of raw materials is controlled by a metering pump, and fed to In the main extruder, after melting, vacuuming and filtering, the moisture, oligomers and impurities in the raw material melt are removed and used as the main extrusion melt; the raw material of the matt layer 2 is sent to the auxiliary extrusion through the suction system In the correspo...

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Abstract

The invention discloses a preparation method of matte bidirectional stretch polyester film with the total thickness of 12-100 micrometers and ABA type three-layer structure film. In the process of preparing the matte film by using a three-layer co-extrusion mode, a sandwich layer is designed as a light-absorbing layer, a surface layer is designed as a matte layer, since the matte effect is mainlydetermined by the degree of light scattering on the film surface, the existence of silicon dioxide with different particle diameters can improve the scattering effect of silicon dioxide with a singleparticle diameter, thereby being capable of giving the matte film lower glossiness, in addition, the glossiness of the matte film can be adjusted conveniently through the proportion of the sandwich layer to the surface layer and the adding quantity of matte master batches of the surface layer, so that the product can meet the requirements of the market for different glossiness.

Description

technical field [0001] The invention relates to the field of biaxially stretched polyester film (BOPET), in particular to a matte biaxially stretched polyester film and a preparation method thereof. Background technique [0002] Biaxially oriented polyester film (BOPET) has a wide range of applications due to its excellent physical and chemical properties. With the development of technology, people's requirements are getting higher and higher. Matte film has a hazy and artistic sense, and is popular in the packaging of high-end consumer goods such as high-end tobacco and alcohol printing and packaging, household appliances labels, and book lamination. The lower the gloss of the matt film, the stronger the hazy and artistic feeling, so developing a matt film with low gloss has become a common goal of relevant researchers. [0003] Patent 200810044519.4 invented a method for manufacturing a transparent matt polyester film. The method is to first synthesize acrylic transparent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/36B32B27/18B32B27/08C08L67/02C08K3/36C08J3/22B29B9/06B29C69/00B29C48/18B29C55/14
CPCB29B9/06B29C55/143B32B27/08B32B27/18B32B27/36B32B2250/03B32B2250/40B32B2307/406B32B2307/54C08J3/226C08J2467/02C08K3/36C08K2201/014
Inventor 范和强陈正坚吴锡清
Owner ZHEJIANG HESHUN NEW MATERIAL CO LTD