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Precision control of web material having micro-replicated lens array

A technology of micro-replication, web, applied in the field of web manufacturing

Inactive Publication Date: 2012-12-12
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing web control strategies for managing these parameters can be limited by the quality of the measurements that provide positional feedback to the web control system to keep web features in good alignment

Method used

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  • Precision control of web material having micro-replicated lens array
  • Precision control of web material having micro-replicated lens array
  • Precision control of web material having micro-replicated lens array

Examples

Experimental program
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Embodiment Construction

[0028] figure 1 is a block diagram illustrating a portion of a web-based manufacturing system 10 operating in accordance with the principles of the present invention. In this particular example, a section of a web transfer system is shown, including a plurality of driven and idler rollers, moving a web 12 through the web transfer system.

[0029] In this example, the web-based manufacturing system 10 includes two microreplication tools 14A, 14B (collectively "tools 14"), one following the other. The microreplication tool produces a web 12 with microstructures that may, for example, extend continuously in the machine direction of the web, or may form other two-dimensional (2D) patterns that simply repeat as the tool rotates . Such configurations may be used, for example, in the manufacture of web 12 to include microreplicated structures having micron-scale dimensions.

[0030] In one example, web 12 is formed as a two-layer film with opposing microstructure patterns on the b...

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PUM

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Abstract

The present invention provides a sensing system that provides high-resolution feedback for web guiding and tension control. The system may be especially useful for web material that is manufactured to include micro-replicated structures with micron size scale. A micro-replication station forms a pattern of micro-replicated lenses on a web material. The sensing system illuminates a measurement area on the web material and detects an angular distribution of light exiting a set of the micro-replicated lenses within the first measurement area. A control system that adjusts at least one process control parameter of the transport system based on the detected angular distribution.

Description

technical field [0001] The present invention relates to web manufacturing technology. Background technique [0002] The manufactured web may be any sheet material having a fixed dimension in one direction and a predetermined or indeterminate length in an orthogonal direction. Examples of webs include, but are not limited to, metal, paper, fabric, non-woven, glass, polymer films, flexible circuits, or combinations thereof. Metals may include materials such as steel or aluminum. Fabrics generally include various cloths. Nonwovens include materials such as paper, filter media, or insulation. Films include, for example, clear and opaque polymeric films, including laminates and coated films. [0003] Web manufacturing processes typically utilize continuous feed manufacturing systems, such as those used to make paper, film, tape, etc., and typically include one or more rotatable mechanical components driven by motors, such as rolls, casting wheels, pulleys , gears, traction r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C1/08B29C59/04B65H23/00G02B3/00
CPCG02B3/0075B05C1/08B29C59/04B65H23/00G02B3/00B29C43/58B29C59/026B29C59/046B29C2043/585B29C2059/023B29D11/00663G02B3/0031
Inventor 大卫·L·霍费尔特罗伯特·L·布罗特丹尼尔·H·卡尔森詹姆斯·N·多布斯安杰伊·P·亚沃尔斯基格伦·A·杰里约翰·T·斯特兰德迈克尔·J·斯克拉卡尔·K·斯腾斯瓦德
Owner 3M INNOVATIVE PROPERTIES CO
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