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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9616640 B1

PDFFull Text
Date of Patent:
Apr. 11, 2017

Filed:

Sep. 02, 2015

Composite film of linearly-scratched, thin metal film and plastic film, and its production apparatus

Applicant:

Seiji Kagawa, Koshigaya, JP;

Inventors:

Seiji Kagawa, Koshigaya, JP;

Yoichiro Kagawa, Koshigaya, JP;

Assignee:

SEIJI KAGAWA, Koshigaya-Shi, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Tahseen N Khan

Int. Cl.
CPC ...
H05K 9/00 (2006.01); B26D 3/08 (2006.01); B32B 15/08 (2006.01); H01Q 17/00 (2006.01); B32B 15/20 (2006.01); B32B 27/28 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01);
U.S. Cl.
CPC ...
B32B 15/08 (2013.01); B26D 3/085 (2013.01); B32B 15/20 (2013.01); B32B 27/281 (2013.01); B32B 27/285 (2013.01); B32B 27/286 (2013.01); B32B 27/288 (2013.01); B32B 27/302 (2013.01); B32B 27/308 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B32B 27/365 (2013.01); H01Q 17/00 (2013.01); H05K 9/0084 (2013.01); H05K 9/0086 (2013.01); B32B 2250/42 (2013.01); B32B 2307/20 (2013.01); B32B 2307/212 (2013.01); B32B 2307/50 (2013.01); B32B 2307/546 (2013.01); B32B 2307/708 (2013.01); B32B 2457/00 (2013.01); B32B 2509/00 (2013.01); Y10T 83/0304 (2015.04); Y10T 428/2457 (2015.01);
Abstract

The present invention provides a composite film having a linearly-scratched, thin metal film and a plastic film, which has good absorbability to electromagnetic waves in various frequencies, as well as reduced anisotropy in electromagnetic wave absorbability, suitable for electromagnetic wave absorbers, and its production apparatus. The composite film having a linearly-scratched, thin metal film and a plastic film according to the present invention comprises a plastic film, and a single- or multi-layer, thin metal film formed on at least one surface of the plastic film, the thin metal film being provided with large numbers of substantially parallel, intermittent, linear scratches with irregular widths and intervals in plural directions. Its production apparatus comprises pluralities of pattern rolls each having large numbers of fine, high-hardness particles on the surface, which are arranged to form linear scratches on the thin metal film side of a thin metal film-plastic composite film, and means each pressing the pattern roll to the composite film, and pluralities of the pattern rolls being oriented in different directions in a plane in which they are in sliding contact with the thin metal film of the composite film.

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