Protective film for polarizer, method for manufacturing protective film for polarizer, and device for manufacturing protective film for polarizer
A manufacturing method and technology of protective film, applied in instruments, conductive coatings, optical components, etc., can solve problems such as insufficient adhesion, and achieve the effects of preventing whitening, inhibiting the generation of static electricity, and preventing adverse situations
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Embodiment 1～4
[0151]
[0152] A transparent protective film containing a (meth)acrylic resin having a lactone ring structure as a base material (Tg: 120° C., the same transparent protective film was used in the following Examples and Comparative Examples) was coated with a wire bar #6. Denatron P-502RG (containing PEDOT / PSS) manufactured by Nagase Chemical Co., Ltd. was coated on it, and then the transparent protective film (substrate) and the coating film (antistatic layer) were stretched by KARO IV film batch stretching machine manufactured by BRUCKNER. Samples were fabricated by preheating at 150°C for 30 seconds and stretching at 150°C at a strain rate of 6% / sec. In addition, as for the draw ratio, as shown in Table 1, the ratio in each example was the same in both the width direction (TD) and the longitudinal direction (MD) direction. In addition, as shown in Table 1, 20 nm, 50 nm, and 100 nm were used for the thickness of the antistatic layer at the time of evaluation in each exampl...
Embodiment 5-1～5-3 and comparative example 6-1～6-3
[0169]
[0170] On a transparent protective film containing a (meth)acrylic resin having a lactone ring structure, Denatron P-502RG manufactured by Nagase Chemical Co., Ltd. was used at various stretching temperatures (heating stretching temperatures) so that after stretching The sample was produced by the same method as Example 1 etc. so that the thickness of the antistatic layer of 100 nm may be set. In addition, all the draw ratios in Table 2 were 2 times in the width direction (TD) and 2 times in the longitudinal direction (MD).
Embodiment 6-1～6-3 and comparative example 7-1～7-2
[0172]
[0173] Denatron P-502RG manufactured by Nagase Kasei Co., Ltd. was applied on a transparent protective film containing a (meth)acrylic resin having a lactone ring structure using wire rod #6, and then batch-drawn using KARO IV film manufactured by BRUCKNER Corporation The transparent protective film (substrate) and the coating film (antistatic layer) were preheated at 140°C for 30 seconds, and stretched at a strain rate of 6% / sec at 140°C to produce a sample (temperature fixed at 140°C). In addition, the thickness of the antistatic layer after stretching was adjusted as shown in Table 3 by controlling the stretching ratio, and a sample was produced by the same method as in Example 1 and the like. In addition, all the draw ratios in Table 3 were 2 times in the width direction (TD) and 2 times in the longitudinal direction (MD).
[0174] About the protective film for polarizers of an Example and a comparative example, the content of the above-mentioned compounding, p...
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