Microstructure film

Patent metadata

Field	Value
Publication number	US-9279906-B2
Application number	US-201213601767-A
Country	US
Kind code	B2
Filing date	Aug 31, 2012
Priority date	Aug 31, 2012
Publication date	Mar 8, 2016
Grant date	Mar 8, 2016

Abstract

The present invention is directed to a microstructure film comprising an area of microstructures and two edge areas, wherein the height of the highest part in the edge areas exceeds the height of the highest point in the microstructures, preferably by about 1 μm to about 1 mm. The application also describes how such a film may be manufactured.

First claim

What is claimed is:

1. An embossing assembly for manufacturing a microstructure film, comprising:
a) a drum;
b) an embossing shim tightly wrapped around the drum wherein the embossing shim has a three-dimensional pattern for forming microstructures;
c) a tape laminated around each end of the embossing shim; and
d) a deformable nip roller capable of pressing against the tape and the embossing shim to create spaces for an embossing composition to enter to form edge areas.

2. The assembly of claim 1 , wherein the microstructure film comprises an area of microstructures and two edge areas, the height of the highest part in each of the edge areas exceeds the height of the highest point in the microstructures, the two edge areas and the microstructures are on opposite sides of the film, and all the heights are measured from the same base line.

3. The assembly of claim 2 , wherein, in the microstructure film, the highest part in the edge areas is a spacer line.

4. The assembly of claim 3 , wherein the spacer line has a width which is in the range of about 3 μm to about 30 mm.

5. The assembly of claim 2 , wherein, in the microstructure film, the height of the highest part in the edge areas exceeds the height of the highest point in the microstructures by about 1μ to about 1 mm.

6. The assembly of claim 5 , wherein, in the microstructure film, the height of the highest part in the edge areas is the thickness of the thickest part in the edge areas.

Assignees

• Kang Gary Yih-Ming
• E Ink California Llc

Inventors

• Kang Gary Yih-Ming

Classifications

• B29D11/00336

  by making depressions in the lens surfaces · CPC title

• B32B3/26

  characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids {(foam layer B32B5/18; layer of synthetic resin characterised by fillers that create voids or cavities B32B27/205); characterised by an apertured layer} · CPC title

• Y10T428/24355

  Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] · CPC title

• G02F2001/1672

  Physics · mapped topic

• Y10T428/24372

  Particulate matter · CPC title