US 11,685,587 B2
Packaging composite material comprising polarizing films and packaging comprising said material
Xun Ma, Shanghai (CN); Zhiheng Zhao, Guangdong (CN); Zhijun Cheng, Shanghai (CN); Wen Zeng, Shanghai (CN); and Huan Xiong, Shanghai (CN)
Assigned to THE COCA-COLA COMPANY, Atlanta, GA (US)
Appl. No. 16/605,716
Filed by The Coca-Cola Company, Atlanta, GA (US)
PCT Filed Apr. 19, 2018, PCT No. PCT/US2018/028276
§ 371(c)(1), (2) Date Oct. 16, 2019,
PCT Pub. No. WO2018/195258, PCT Pub. Date Oct. 25, 2018.
Claims priority of application No. 201710257517.2 (CN), filed on Apr. 19, 2017.
Prior Publication US 2020/0130918 A1, Apr. 30, 2020
Int. Cl. B65D 81/30 (2006.01); B32B 27/30 (2006.01); B32B 27/36 (2006.01); B32B 27/08 (2006.01); B32B 7/023 (2019.01); B32B 7/12 (2006.01); B65D 65/40 (2006.01); C09J 7/35 (2018.01); C08J 5/18 (2006.01); C08J 5/12 (2006.01); C09J 5/06 (2006.01); G02B 5/30 (2006.01)
CPC B65D 81/30 (2013.01) [B32B 7/023 (2019.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/306 (2013.01); B32B 27/36 (2013.01); B65D 65/40 (2013.01); C08J 5/128 (2013.01); C08J 5/18 (2013.01); C09J 5/06 (2013.01); C09J 7/35 (2018.01); B32B 2250/05 (2013.01); B32B 2250/24 (2013.01); B32B 2307/402 (2013.01); B32B 2307/42 (2013.01); B32B 2553/00 (2013.01); C08J 2329/04 (2013.01); C08J 2367/02 (2013.01); C08J 2429/04 (2013.01); C08J 2467/04 (2013.01); C09J 2429/00 (2013.01); G02B 5/3041 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A packaging composite material comprising:
a polarizing layer, comprising three or more layers of uniaxially-stretched polarizing film, wherein each layer of polarizing film has been uniaxially stretched in a stretching direction and wherein each layer of polarizing film has a polarization direction corresponding to the stretching direction;
wherein the polarization directions of at least two layers of the three or more layers of polarizing film have an included angle of 45°-135°,
wherein amongst the polarizing films, the polarization directions of at least two polarizing films have an included angle which is not 0°, and
wherein the packaging composite material has a light-blocking effect.
 
12. A packaging composite material comprising:
a polarizing layer, comprising two or more layers of uniaxially-stretched polarizing film, wherein each layer of polarizing film has been uniaxially stretched in a stretching direction and wherein each layer of polarizing film has a polarization direction corresponding to the stretching direction;
a first surface layer located on one side of the polarizing layer; and
a second surface layer located on another side of the polarizing layer;
wherein the packaging composite material further comprises surface layer bonding layers located between the polarizing layer and the first and second surface layers respectively,
wherein the polarization directions of at least two layers of the two or more layers of polarizing film have an included angle which is not 0°, and
wherein the packaging composite material has a light-blocking effect.