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Tool for making microstructured articles

A microstructured and structured technology, applied in the manufacture of microstructure devices, microstructure technology, microstructure devices, etc., can solve the problems of difficult, expensive, and increase the overall cost of microstructured graphics, reducing pre-preparation time, Easy and fast changing effects

Inactive Publication Date: 2010-08-04
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, machining metal tools to produce microstructured articles that meet customer specifications can be a time-consuming process
Furthermore, once machined into a metal tool, it is difficult and expensive to change the microstructured pattern in response to changing customer demands
This processing time can cause production delays and increase overall costs, so methods are needed to reduce the time required to prepare tools suitable for the production of microstructured articles

Method used

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  • Tool for making microstructured articles
  • Tool for making microstructured articles
  • Tool for making microstructured articles

Examples

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Embodiment Construction

[0017] The present invention relates to a method for the preparation of replication tools which can then be used for the preparation of microstructured articles. As noted above, microstructured articles have microstructured surface features having structures (protrusions, depressions, grooves, etc.) on their surface that are microstructures in at least two dimensions. As used herein, the term microscopic refers to dimensions that are indistinguishable to the human eye without the aid of a microscope. A usable resolution of the microscopic exists as described by Smith in Modern Optic Engineering, (1966), pages 104-105 (Modern Optical Engineering (1966), pp. 104-105), where visual acuity is defined and expressed as Measured by the corner size of the smallest recognizable character. Normal visual acuity allows the detection of characters subtending an elevation angle of 5 minutes of arc on the retina. In some cases, the dimensions of the microstructures are less than 1000 micro...

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Abstract

A method for making a microstructured article, including (1 forming a first microstructured pattern on a substrate; (2) replicating the first microstructured pattern to make a second microstructured pattern in a flexible material; (3) replicating the second microstructured pattern multiple times to form a third microstructured pattern in a crosslinkable material to make a tool on a first carrier;and (4)replicating the third microstructured pattern in a polymer to make at least one microstructured article.

Description

technical field [0001] The present invention relates to methods for making tools suitable for making microstructured articles, and to processes for using the tools to make microstructured articles. Background technique [0002] Articles having microstructured surface features include on their surface a plurality of structures (protrusions, depressions, grooves, etc.) that are microstructures in at least two dimensions. Microstructured surface features can be created in or on an article by any contact manipulation technique such as molding, coating or compression. Generally, microstructured surface features can be produced by at least one of the following methods: (1) modeling on a tool with a microstructured pattern; (2) coating on a structured film with a microstructured pattern, For example a release liner; or (3) passing the article through nip rolls to compress the article against a structured film having a microstructured pattern. [0003] The surface features of the ...

Claims

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Application Information

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IPC IPC(8): B81C1/00H01L21/027
CPCG03F7/0002G03F7/0015G03F7/0017G03F7/2053B82Y10/00B82Y40/00
Inventor 莫塞斯·M·大卫
Owner 3M INNOVATIVE PROPERTIES CO
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