Antistatic film, polyester film for surface-protecting film, and polyester film for protecting surface of optical member
A surface protective film, anti-static technology, applied in chemical instruments and methods, coatings, layered products, etc., can solve the problems of surface layer damage, inspection obstacles, and lack of durability of protective films, and achieve high industrial value. , excellent antistatic properties and durability, the effect of excellent characteristics
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Embodiment 1
[0115] Polyester 1 and polyester 2 are mixed in a weight ratio of 80 / 20. After they are fully dried, they are heated and melted at 280-300°C. They are extruded from a T-shaped tube head into a sheet shape and adhered to each other by electrostatic adhesion. On a mirror-surface cooling drum with a surface temperature of 40-50°C, cooling and solidification were performed to form an unstretched polyethylene terephthalate film. The film was stretched 3.7 times in the longitudinal direction while passing through a heating roll group at 85°C to obtain a uniaxially oriented film. The coating composition shown in Table 1 below was applied to one side of the uniaxially oriented film. Next, the film was introduced into a tenter stretcher, and the coating composition was stretched 4.0 times in the width direction at 100°C while drying the coating composition with its heat, and then heat-treated at 230°C to obtain a double film with a thickness of 38μm. 0.03g / m on the axis-oriented polyet...
Embodiment 2～6
[0117] In the same process as in Example 1, the coating liquid was changed as shown in Table 1 to obtain a coating film in which an antistatic coating layer of the amount shown in Table 1 was laminated on a base film having a film thickness of 38 μm. Table 2 shows the characteristics of the film.
Embodiment 7
[0126] Polyester 1 and polyester 2 are mixed in a weight ratio of 80 / 20. After they are fully dried, they are heated and melted at 280-300°C. They are extruded from a T-shaped tube head into a sheet shape and adhered to each other by electrostatic adhesion. On a mirror-surface cooling drum with a surface temperature of 40-50°C, cooling and solidification were performed to form an unstretched polyethylene terephthalate film. The film was stretched 3.7 times in the longitudinal direction while passing through a heating roll group at 85°C to obtain a uniaxially oriented film. The coating composition shown in Table 3 below was applied to one side of the uniaxially oriented film. Next, the film was introduced into a tenter stretcher, and the coating composition was stretched 4.0 times in the width direction at 100°C while drying the coating composition with its heat, and then heat-treated at 230°C to obtain a double film with a thickness of 38μm. 0.03g / m on the axis-oriented polyet...
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Abstract
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