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Title:
ALUMINUM FOIL WITH DOUBLE DARK SIDES AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/148679
Kind Code:
A1
Abstract:
An aluminum foil with double dark sides, wherein the glossiness of the front side of the aluminum foil is as follows: measuring glossiness GZ 20 <50Gu at an angle of 20 degrees, measuring glossiness GZ 60 <150Gu at an angle of 60 degrees, and measuring glossiness GZ 85 <100Gu at an angle of 85 degrees; the glossiness of the back side of the aluminum foil is as follows: measuring glossiness GF 20 <50Gu at an angle of 20 degrees, measuring glossiness GF 60 <150Gu at an angle of 60 degrees, measuring glossiness GF 85 <100Gu at an angle of 85 degrees, wherein the glossiness is measured according to the ASTM D523 standard. The preparation method for thealuminum foil with double dark sides comprises: stacking N layers of aluminum foils up and rolling them together, where N≥3, those aluminum foils which are not in contact with the surface of a roll during the rolling process are aluminum foils with double dark sides.

Inventors:
WANG, Zhihui (Room 066, One Floor Building 14, No.2, Sanda West Road, Haidian District, Beijing 4, 100084, CN)
XU, Wei (Room 066, One Floor Building 14, No.2, Sanda West Road, Haidian District, Beijing 4, 100084, CN)
Application Number:
CN2018/085122
Publication Date:
August 08, 2019
Filing Date:
April 28, 2018
Export Citation:
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Assignee:
BEIJING XINDA SHENG PACKAGING MATERIALS CO., LTD (Room 066, One Floor Building 14, No.2, Sanda West Road, Haidian District, Beijing 4, 100084, CN)
International Classes:
B21B1/40; B21B1/38; B21D33/00; H01M4/139
Attorney, Agent or Firm:
BEIJING LINGZHUAN INTELLECTUAL PROPERTY AGENCY CO., LTD (YANG, BingRoom 5418, Building 5, Garden Hotel,No. 30 Huayuan East Road, Haidian District, Beijing 3, 100083, CN)
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