Resin sheet, laminate body, moulded body, and moulded body production method
A technology for resin sheets and laminates, applied in chemical instruments and methods, synthetic resin layered products, lamination, etc., can solve the problems of insufficient surface hardness and achieve the effect of excellent surface hardness
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Embodiment 1
[0224] use figure 2 The apparatus shown, manufactures resin sheets.
[0225] The operation of this device will be described. The molten resin of polypropylene and petroleum resin having the composition shown in Table 1 extruded from the T-die 52 of the extruder was sandwiched between the metal endless belt 57 and the fourth cooling roll 56 on the first cooling roll 53 between. In this state, the molten resin is quenched while being pressure-contacted by the first and fourth cooling rolls 53 and 56 .
[0226] Next, the resin sheet is sandwiched between the metal endless belt 57 and the fourth cooling roll 56 at an arc portion corresponding to substantially the lower half of the fourth cooling roll 56 , and is brought into planar pressure contact. After the fourth cooling roll 56 is pressed and cooled in a planar manner, the resin sheet that has been in close contact with the metal endless belt 57 is moved onto the second cooling roll 54 as the metal endless belt 57 rotates....
Embodiment 2-6 and comparative example 1-2
[0271] Except having used the molten resin of the composition shown in Table 1 as the molten resin used for manufacture of a resin sheet, it carried out similarly to Example 1, produced the resin sheet, and evaluated it. The results are shown in Table 1.
[0272] [Table 1]
[0273]
[0274] [Manufacture and evaluation of laminated body]
Embodiment 7-10
[0276] The extruder was set to have the molten resin for the production of the resin sheet having the composition shown in Table 2, and the molten resin for the production of the substrate sheet having the composition shown in Table 2, so as to achieve the layer ratio shown in Table 2 (Resin sheet / substrate sheet), except for co-extrusion using the following extruder, the same operation was performed using the same device as in the manufacture of the resin sheet in Example 1, and a resin sheet and a substrate sheet were produced. Laminates composed of sheets were evaluated. The results are shown in Table 2.
[0277] ·The diameter of the extruder for the first layer (resin sheet): 50mm
[0278] ・The diameter of the extruder for the second layer (substrate sheet): 75mm
[0279] It should be noted that, regarding the evaluation method of the isotactic pentad fraction, crystallization rate, pencil hardness, and Martens hardness of the laminates in Table 2, except that the evalua...
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