ã€patent type】 utility model ã€patent name】 a kind of packaging paper corner paper trough ã€applicant】 Lu permanent [inventor] Lu permanent [main applicant address] 115100 Dashiqiao City, Liaoning Province Tiexi District Jinqiao Office The [application number] 200420030764.7 〠Application Date 】 2004.03.12 ã€Accredited Announcement No.】 2695379 〠Validation announcement date 】 2005.04.27 〠Main classification number 】 B65D59/00 [Category] B65D59/00 [Sovereign Items] 1. A kind of packaging paper corner paper slot, which is characterized by: 7-11 layers of corrugated paper or cardboard (1), 7-11 layers of waterproof adhesive (2) and one layer of outsourcing The paper (3) constitutes a high density cardboard corner (4) or a high density cardboard slot (5). [Instructions CD-ROM] D0517 ã€Abstract】 A kind of packaging paper angle paper trough is made of 7-11 layers of corrugated paper or cardboard, 7-11 layers of waterproof adhesive and a layer of wrapping paper to form high-density paperboard, which is formed into angle steel by pressing. Or channel type. The packaging material is suitable for the packaging of metallurgical materials and medicines.