Biaxially oriented thermoplastic resin film
A thermoplastic resin film, biaxially oriented technology, used in applications, capacitor manufacturing, electrical components, etc., can solve problems such as quality degradation, and achieve the effect of good smoothness and good windability
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Embodiment 1
[0236] After PET-1 and masterbatch MB-A were dried under reduced pressure at 180°C for 2.5 hours, they were blended so that the particle content concentration became the amount of P1 layer and P2 layer described in Table 1, and were supplied to each extruder to perform Melt extruded, filtered with a filter, merged in the form of P1 layer / P2 layer with a feed block, passed through a T-die, and wound on a cooling roll maintained at 37°C by electrostatic application casting method to cool Cured to obtain an unstretched film. Lead the unstretched film between the opposite electrode and the ground roller, introduce nitrogen into the device, and the E value becomes 160W·min / m 2 Atmospheric pressure glow discharge treatment was carried out under the conditions.
[0237] The treated unstretched film was stretched by 3.6 times in the length direction and 4.0 times in the width direction by a sequential biaxial stretching machine under the conditions recorded in Tables 1 and 2, for a t...
Embodiment 2-4
[0239] In Examples 2-4, except that the master batches used were changed so as to have the particle concentration described in Table 1, a biaxially oriented film with a thickness of 4.5 μm was obtained in the same manner as in Example 1. . Tables 3 and 4 show the physical properties, surface protrusion shape, and characteristic evaluation of the obtained biaxially oriented film.
[0240]In Example 2, a large amount of particles with an average primary particle diameter of 250 nm larger than that of Example 1 was added, and as a result, the number of protrusions with a height of 10 nm or more measured by non-contact optical roughness measurement increased, thereby transferring The defect was reduced compared with Example 1, but it was within the practical range, and it was a film with good winding properties and winding misalignment.
[0241] In Examples 3 and 4, particles with an average primary particle diameter of 15nm and 10nm smaller than that of Example 1 were used. As a...
Embodiment 5
[0243] In Example 5, the atmospheric pressure glow discharge treatment is described in Table 2, and the E value becomes 450W·min / m 2 Except having carried out under the conditions of , a biaxially oriented film with a thickness of 4.5 μm was obtained in the same manner as in Example 1. Tables 3 and 4 show the physical properties, surface protrusion shape, and characteristic evaluation of the obtained biaxially oriented film.
[0244] In Example 5, compared with Example 1, the number of protrusions with a height of more than 1nm and less than 10nm measured by AFM increased, and the winding state deteriorated due to winding misalignment, but it was within the practical range. In addition, winding properties and transfer Defects are good film.
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Abstract
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