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Irregular surface sheet and method for manufacturing same

An embossed board and embossed technology, applied in the direction of flat products, transportation and packaging, instruments, etc., can solve the problem of inability to apply optical properties, and achieve the effect of preventing crushing

Inactive Publication Date: 2012-12-19
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if Figure 9 As shown in , unlike a resin plate having a flat surface, an embossed plate 2 having a plate surface on which an embossed pattern 1 is formed has a problem that when Figure 9 When the embossed sheet 2 shown in part (A) is wound up around the take-up shaft 3 of the winder, as Figure 9 As shown in part (B) of , by the winding pressure due to the winding tension, the convex portion 1A of the relief pattern 1 is crushed, causing such a problem that the optical performance cannot be applied

Method used

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  • Irregular surface sheet and method for manufacturing same
  • Irregular surface sheet and method for manufacturing same
  • Irregular surface sheet and method for manufacturing same

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Embodiment Construction

[0045] Hereinafter, preferred embodiments of the embossed plate and the method of manufacturing the embossed plate of the present invention will be described with reference to the accompanying drawings.

[0046] figure 1 is a schematic side view of a manufacturing apparatus 10 performing a method of manufacturing a relief plate according to an embodiment of the present invention, and figure 2 is a partial perspective view of the manufacturing apparatus 10 .

[0047] Such as figure 1 with 2 As shown in , dry thermoplastic virgin resin is put into extruder 14 through hopper 12 and melted while mixing and kneading. The extruder 14 may be a single-screw extruder or a multi-screw extruder, or may include a vent function for creating a vacuum in the extruder 14 .

[0048] Next, the molten resin melted by the extruder 14 is supplied to the extrusion die 18 through the supply pipe 16 . The extrusion die 18 mainly includes: a manifold 18A through which the molten resin supplied...

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Abstract

An irregular surface sheet (40) is formed by forming an irregular surface pattern (30) on the surface of a band-like sheet and is wound in a roll-shape. Band-like stepped sections (34) having a greater sheet thickness than the remaining portion are formed at both ends of the sheet in the width direction thereof so as to extend in the longitudinal direction of the sheet.

Description

technical field [0001] The present invention relates to an embossed plate and a method of manufacturing an embossed plate, in particular, to an embossed plate and a method for producing an embossed plate in which an embossed pattern serving as a lens is formed on one surface of the plate, and In the process the board is rolled up. Background technique [0002] Embossed plates made of resin and used in various optical elements include Fresnel lenses, lenticular lenses, etc., and are used in various fields. Such an embossed plate has a surface on which a regular embossed pattern serving as a lens is formed, and this embossed pattern provides optical performance. As a method for producing such an embossed sheet, there are generally an extrusion molding method, an extrusion lamination method, and a 2P method. Extrusion molding is a method in which a strip-shaped resin sheet obtained by extruding a thermoplastic molten resin from an extrusion die in a photo-like shape is sandwi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C59/04B29C39/18B29C69/00B29L7/00B29L9/00B29L11/00
CPCB29C47/0021B29C47/0064B32B3/04G02B3/0031B29C53/043B29C43/222B29L2011/005B29C48/08B29C48/0021Y10T156/1011Y10T428/23Y10T428/24231
Inventor 胜本隆一日比野亮清水隆志
Owner FUJIFILM CORP