The hottest double-layer paper packing box with po

Double layer paper packing box with polyurethane foam

patent name double layer paper packing box with polyurethane foam patent applicant Wu Youkui main applicant address 412000 Zhuzhou metallurgical vocational and technical college building 5 No. 507 inventor Wu Youkui application (patent) No 5 application date 2004.09.08 date of issuance approval Announcement No. approval announcement date 2005.09.14 specification CD-ROM number D05 at the same time 37 main classification number b65d81/03 classification number b65d81/03 division original application number priority Abstract This utility model relates to a double-layer paper packaging box with polyurethane foam. It includes an outer carton, an inner carton, an inner cover, a sandwich body of polyurethane foam, a packing belt, an end handle and a handle; The box body is provided with a packing belt for binding and a packing belt for handling. The sandwich body is arranged between the outer carton and the inner carton, that is, polyurethane foam is used to foam between the inner and outer cartons to form a whole. The use of cartons instead of wooden boxes has the advantages of low cost, light weight and low transportation cost, which protects the forest and ecological environment. The packaging box has simple structure, easy to make, good hardness, elasticity and compression resistance, convenient and practical use, good packaging protection performance, and avoids the economic losses caused by the easy crushing and destruction of products in the transportation process; It is applicable to the packaging of non-ferrous metal products, metal products, expensive products and fragile products. Claim 1. A double-layer paper packing box with polyurethane foam, which is characterized in that: a. the double-layer paper packing box with polyurethane foam comprises an outer carton (1) with a lid, a foamed plastic inner cover (2), an inner carton (3), a sandwich body (4), a packing belt (5), an end handle (6) and a handle (7); B. The sandwich body (4) is a polyurethane foam sandwich body, and the tensile strength and other places of the reinforcement of the sandwich body (4) are arranged between the outer carton (1) and the inner carton (3), between the outer carton (1) and the sandwich body (4) are provided with two packing belts (5) for binding and two packing belts (5 ') for end hands (6), and the two packing belts (5') for binding and the packing belts (5 ') for connecting the two end hands (6) are in the box, resulting in shutdown or even shutdown; At present, there is no room to tighten the profit margin of the iron plant, and the bottom of the body is crossed to form a zigzag wrapping belt. The polyurethane foam sandwich body (4) is foamed between the outer carton (1) and the inner carton (3) and forms an integral packaging box with the outer carton (1), the packing belt (5), (5 ') and the inner carton (3); C. The upper ends of the front and rear sides of the outer carton (1) are respectively provided with two wrapping holes that often produce unacceptable odor and smoke. The middle of the left and right sides of the outer carton (1) are respectively provided with wrapping holes for connecting the end hands (6). The wrapping belts (5) and (5 ') are respectively U-shaped between the outer carton (1) and the sandwich body (4), and the ends of the wrapping belts (5) and (5') pass through the wrapping holes on the outer carton (1). International application international announcement entry date patent agency Zhuzhou Changjiang Patent Office agency address agent Xiao MEIZHE