Flexible multi-waveband light absorbing BOPET film and preparation method thereof
A multi-band, light absorption technology, used in chemical instruments and methods, flat products, other household appliances, etc., can solve the problem of unprotected surface of the filter film, and achieve unaffected optical properties, good hardness, and optical absorption properties. stable effect
Active Publication Date: 2019-09-20
浙江和顺新材料有限公司
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[0003] The present invention provides a flexible multi-band light-absorbing BOPET film and its preparation method, aiming to solve the shortcomings of the prior art that the filter film is mainly single-band and the surface of the filter film is unprotected
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[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, and the following examples are only illustrative, not limiting the present invention.
[0034] like figure 1 As shown, a kind of flexible multi-band light-absorbing BOPET film provided by the present invention is a CBABC five-layer structure film, wherein layer A is the ultraviolet and infrared absorbing layer 3, layer B is the visible light absorbing layer 2, and layer C is Surface hardening layer 1;
[0035] The layer A includes 96.5%-97.5% by weight of optical-grade transparent PET slices, 2%-2.5% of ultraviolet-absorbing masterbatches, and 0.5%-1% of infrared-absorbing masterbatches;
[0036] The B layer includes 95% to 97% by weight of optical-grade transparent PET slices and 3% to 5% of visible light absorption masterbatches;
[0037] The C layer is coated with TiO on the surface 2 hardened layer.
[0038] The film has the function of l...
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Abstract
The invention discloses a flexible multi-waveband light absorbing BOPET film and a preparation method thereof. The film is a CBABC type five-layer structure film, wherein the A layer is an ultraviolet and infrared absorbing layer, the B layer is a visible light absorbing layer, the C layer is a surface hardening layer, the total thickness is 80-120 [mu]m, the raw materials of the layer A comprise 96.5-97.5% by weight of optical-grade transparent PET slices, 2-2.5% by weight of ultraviolet absorbing masterbatch, and 0.5-1% by weight of infrared absorbing masterbatch, the raw materials of the B layer comprise 95-97% by weight of optical-grade transparent PET slices and 3-5% by weight of visible light absorbing masterbatch, the C layer is plated with TiO2 to achieve the hardening effect on the surface of the film, the A layer and the B layer are prepared through a three-layer co-extrusion biaxial stretching method, and the C layer is prepared through an electron beam evaporation method. The flexible multi-waveband light absorbing BOPET film of the present invention has characteristics of high flatness, high hardness and strong light absorption.
Description
technical field [0001] The invention relates to the field of biaxially stretched polyester film (BOPET), in particular to a flexible multi-band light-absorbing BOPET film and a preparation method thereof. Background technique [0002] In recent years, optical thin films have developed rapidly, and the demand for optical thin films with different characteristics is increasing in various fields. Absorbing optical films have always been an important branch of optical film research. They are mainly used to filter specific light bands to meet the needs of night vision compatibility, light sensors, and optical radiation protection. Traditional absorbing filter films are mainly single-band, and only have absorption characteristics in one light region of ultraviolet light, visible light or infrared light, and generally only have a single-layer film structure, the surface is not protected, and it is easy to scratch and affect the optics. The use performance of the film, for example,...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B32B27/36B32B27/06B32B27/18B32B38/00B29D7/01
CPCB29D7/01B32B27/08B32B27/18B32B27/36B32B38/00B32B38/0012B32B2038/0028B32B2250/40B32B2307/40B32B2307/584
Inventor 范和强陈正坚吴锡清赵言松杨凯元方王凯徐迪均肖升
Owner 浙江和顺新材料有限公司