coating film
A technology of coating film and coating layer, applied in the field of coating film, can solve problems such as inability to correspond to high brightness, and achieve the effect of high industrial value and high brightness
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Embodiment 1
[0153] The mixed raw materials obtained by mixing polyesters (A), (B) and (C) at a ratio of 89%, 5%, and 6% are used as raw materials for the outermost layer (surface layer), and 95%, 5%, and The mixed raw materials obtained by mixing polyesters (A) and (B) in the ratio of 2 as the raw materials for the intermediate layer are supplied to two extruders respectively, and after each is melted at 285°C, it is placed on a cooling roll set at 40°C Two types of three-layer (surface layer / intermediate layer / surface layer = 1:18:1 discharge rate) layer configuration were coextruded and allowed to cool and solidify to obtain an unstretched sheet. Next, after stretching 3.4 times in the longitudinal direction at a film temperature of 85° C. by using the difference in roll peripheral speed, coating liquid 1 shown in Table 1 below was applied to both sides of the longitudinally stretched film, and introduced into a tenter. 4.0-fold stretching at 120°C in the transverse direction, heat trea...
Embodiment 2～23
[0157] In Example 1, except having changed the composition of a coating agent and the compound composition of an ultraviolet curable resin layer as shown in Table 1 and Table 2, it manufactured similarly to Example 1, and obtained the polyester film. As shown in Table 3, the obtained polyester film was favorable in both adhesiveness and brightness.
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Abstract
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