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Made in manufacturing method and manufacturing device with a film with a fine surface structure

A manufacturing method and surface structure technology, applied to flat products, household appliances, and other household appliances, can solve the problems of non-disclosure, etc., and achieve the effects of improving productivity, accelerating peeling speed, and achieving long life

Inactive Publication Date: 2015-09-16
TORAY IND INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this patent document 5, as the most advantageous situation in terms of product design or product yield (the ratio that can use the molded film as a product), the specific solution to the case where orthogonal grooves are arranged along the transfer direction and the width direction The means have not been made public

Method used

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  • Made in manufacturing method and manufacturing device with a film with a fine surface structure
  • Made in manufacturing method and manufacturing device with a film with a fine surface structure
  • Made in manufacturing method and manufacturing device with a film with a fine surface structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] (1) Mold:

[0108] Make the mold using the following.

[0109] Die size: 200mm (film width direction) x 400mm (film transfer direction) x 20mm (thickness).

[0110] Mold Material: Copper.

[0111] Microstructure: Grooves in two directions (film transfer direction and film width direction) perpendicular to each other are formed on the surface of the mold. The cross-sectional shape of the grooves was 20 μm deep and 20 μm wide, and formed at a pitch of 200 μm.

[0112] (2) Pressure device:

[0113] It is a mechanism pressurized by an oil pressure pump. Two aluminum alloy temperature regulating plates with a size of 700mm (film width direction)×1000mm (film running direction) are fixed up and down in the pressurizing device. They are respectively connected with the heating device and the cooling device. connect. It should be noted that the mold is installed on the temperature control plate on the lower side. The heating device was a heat medium circulation device, and...

Embodiment 2

[0124] (1) mold: same as embodiment 1

[0125] (2) pressurizing device: same as embodiment 1

[0126] (3) Demolding supply device:

[0127] The same configuration as in Example 1 was used except that the axis centers of the peeling roller and the auxiliary roller were set at 45 degrees to the film transfer direction.

[0128] (4) film: same as embodiment 1

[0129] (5) Action method: Same as in Example 1 except that the peripheral speed of the peeling roller during peeling is 20 m / min

[0130] (6) Results:

[0131] The above operation was repeated 10 times to produce a molded film, and the molded surface was visually evaluated. As a result, a uniform molded surface with no peeling marks in appearance was obtained.

Embodiment 3

[0169] (1) Mold: Same as Example 1 of the first embodiment

[0170] (2) Pressurizing device: same as Example 1 of the first embodiment

[0171] (3) Demolding supply device:

[0172] use with Figure 7 , 8The stripping supply unit is a combination of a stripping roller and an auxiliary roller with the same structure as shown. A peeling roller, with an outer diameter of 150 mm, covered with fluororesin, is connected to a servo motor. The auxiliary roller has an outer diameter of 50 mm, is covered with fluororesin, and is rotatably mounted. In addition, the distance (gap) between the peeling roller and the surface of the mold was 0.5 mm. In addition, as a direct-linkage drive source for moving the roller assembly of the peeling roller and the auxiliary roller back and forth on the surface of the mold in a direction perpendicular to the axis of the rollers, a direct-linkage servo motor was used. The peeling roller and the auxiliary roller were installed so that the axis cent...

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Abstract

Disclosed are a method and apparatus for producing a film having a fine surface structure, which comprises: a step wherein a film is intermittently supplied to a mold having a surface which is provided with grooves extending in two directions that are perpendicular to each other; a step wherein the film is brought into contact with and pressed against the mold so that the surface of the film is provided with a shape that corresponds to the shape of the mold surface; and a mold release step wherein the film adhering to the mold surface after the molding is separated therefrom. The method and apparatus for producing a film having a fine surface structure are characterized in that the two directions of the grooves of the mold perpendicular to each other are generally identical to the travel direction and the width direction of the film and the film separating direction in the mold release step is at an angle of 15-75 degrees with respect to the travel direction of the film. Consequently, defects and yield decrease due to mold releasing can be suppressed when the fine structure of the mold surface is transferred / molded on the film surface and the film is conveyed after being released from the mold after the molding.

Description

technical field [0001] The present invention relates to a method and an apparatus for producing a film having a fine surface structure by sequentially supplying a continuous film to a forming device and forming a fine structure on the surface of the film. In particular, it relates to a production method and a production apparatus for a film having a fine surface structure capable of smoothly peeling a molded film having a fine surface structure of a plurality of orthogonal fine grooves from a mold. Background technique [0002] As a method for producing films used in optical media such as light guide plates, light diffusion plates, and lenses, methods for forming fine structures on the surface of films have been known in the past, and for example, intermittently forming a cylindrical ultra-long film has been proposed. Apparatus and method of fine structure (Patent Document 1, Patent Document 2). [0003] In these apparatuses and methods, a film supplied from an unwinding ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C59/02B29L7/00
CPCB29C37/0007B29C59/022B29C2059/023B29C37/0014B29C37/0003B29D7/01
Inventor 箕浦洁野村文保平田肇
Owner TORAY IND INC