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Method for producing resin sheet transferring surface shape

A manufacturing method and surface shape technology are applied in the manufacturing field of surface shape transfer resin sheets, which can solve problems such as difficulty in obtaining optical properties, and achieve the effects of good manufacturing efficiency, good manufacturing efficiency, and good manufacturing.

Inactive Publication Date: 2011-05-11
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case where a sufficiently high transfer rate cannot be obtained in this way, there will be a problem that when the obtained surface shape transfer resin sheet is used as an optical sheet such as a light diffusion plate, it will be difficult to obtain the desired excellent quality. optical properties

Method used

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  • Method for producing resin sheet transferring surface shape
  • Method for producing resin sheet transferring surface shape
  • Method for producing resin sheet transferring surface shape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] (Manufacturing device A)

[0077] get ready figure 1 Manufacturing apparatus A of the structure shown. This manufacturing apparatus A has an extruder 7 having a die 8 , a first squeeze roll 11 , a second squeeze roll 12 , and a third squeeze roll 13 . The surface of the first squeezing roller 11 is a mirror surface.

[0078] In the transfer mold 22 on the surface of the second squeeze roller 12, the pitch interval P of the groove 22a is 100 μm, the depth D of the groove 22a is 146.3 μm, D / P=1.46, the interval d is 4.7 μm, and the angle θ is 74° (refer to figure 2 ).

[0079] And, in the transfer mold 23 on the surface of the third squeeze roller 13, the pitch interval P of the groove 23a is 400 μm, the depth D of the groove 23a is 220 μm, D / P=0.55, and the interval d is 4.6 μm (refer to image 3 ).

[0080] Propylene-ethylene random copolymer resin ("D101" manufactured by Sumitomo Chemical Co., Ltd., propylene unit content rate 99% by mass) (crystalline resin) 88...

Embodiment 2

[0106] (Manufacturing device B)

[0107] Prepare figure 1 Manufacturing apparatus B of the structure shown. This manufacturing apparatus B has an extruder 7 having a die 8 , a first squeeze roll 11 , a second squeeze roll 12 , and a third squeeze roll 13 . The surfaces of the first squeeze roll 11 and the second squeeze roll 12 are mirror surfaces.

[0108] In the transfer mold 23 on the surface of the third squeeze roller 13, the pitch interval P of the groove 23a is 353 μm, the depth D of the groove 23a is 223.7 μm, D / P=0.63, and the interval d is 2.0 μm (refer to Figure 5 (a)).

[0109] 100 parts by weight of polycarbonate resin (Calibur 200-30 manufactured by Sumitomo Dow Co., Ltd.) was melted and kneaded at 220° C. to 255° C. in the extruder 7 with a screw diameter of 40 mm in the above-mentioned manufacturing apparatus B, and then passed through a multi-flow machine with a width of 250 mm. The continuous resin sheet 2 was obtained by extruding in a sheet form at a d...

Embodiment 3

[0126] 100 parts by weight of acrylic resin (Sumipex EXN manufactured by Sumitomo Chemical Co., Ltd.) was melted and kneaded at 200° C. to 245° C. in the extruder 7 with a screw diameter of 40 mm in the above-mentioned manufacturing apparatus B, and then passed through a multi-manifold die with a width of 250 mm. 8. Extrude in a sheet form at a die temperature of 235° C. to obtain a continuous resin sheet 2 (extrusion process).

[0127] Then, if figure 1 As shown, the continuous resin sheet 2 is passed between the first squeeze roll 11 and the second squeeze roll 12 of the above-mentioned manufacturing apparatus B, and after the continuous resin sheet 2 is squeezed by the two squeeze rolls 11 and 12 (first Extrusion step), the continuous resin sheet 2 is conveyed in a state of being in close contact with the outer peripheral surface of the second squeeze roll 12 (transportation step), and then the continuous resin sheet 2 is passed through the second squeeze roll 12 and the th...

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Abstract

The invention provides a method for producing resin sheet transferring surface shape, which is characterized by comprising an extrusion step, a first extruding step, a carrying step and a second extruding step. During the extrusion step, resin is continuously extruded out of a die head (8) to obtain continuous resin sheets (2). During the first extruding step, the continuous resin sheets (2) are clamped by a first extruding roller (11) and a second extruding roller (12). During the carrying step, the continuous resin sheets (2) tailored to the second extruding roller (12) are delivered. During the second extruding step, the continuous resin sheets (2) are clamped by the second extruding roller (12) and a third extruding roller (13), wherein at least the surface of one of the rollers is equipped with a transfer printing mold. The continuous resin sheets (2) are clamped between the rollers at a pressure higher than 5 MPa.

Description

technical field [0001] The present invention relates to a method for producing a surface shape transfer resin sheet capable of forming a concavo-convex shape on the surface of the resin sheet at a high transfer rate. Background technique [0002] As a method for producing a resin sheet having concavo-convex shapes on the surface, there is known a method of transferring the shape of a transfer mold on the surface of a squeeze roll to a continuous resin sheet obtained by extruding resin from a die of an extruder (refer to Patent Document 1: Japanese Patent Application Laid-Open No. 9-11328 (paragraph 0007, figure 1 , figure 2 etc.), Patent Document 2: Japanese Patent Laid-Open No. 2009-220555 (claim 1, figure 2 Wait)). That is, after the continuous resin sheet continuously extruded from the die is squeezed between the first squeeze roll and the second squeeze roll, it is conveyed in a state of being closely attached to the second squeeze roll, and then squeezed between th...

Claims

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Application Information

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IPC IPC(8): B29C69/02B29C59/04B29L7/00B29K23/00B29C48/12B29C48/07B29C48/305
CPCB29C48/07B29C48/12B29C48/914B29C59/04B29C2043/461B29C43/46B29C48/002B29C48/0011
Inventor 坂田规光滨松丰博
Owner SUMITOMO CHEM CO LTD
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