COMPOSITE CONTAINER

• Main Authors: FUKUSHIMA HIDEO, IWASAKI AKITAKA, KASHIMA HIROTO, SEKI TAKEKUNI
• Format: Patent
• Language: English
• Published: 27.01.1998
• Edition: 6
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNERANALOGOUS TO PAPER; MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN AMANNER ANALOGOUS TO PAPER; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STORING; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUSTO PAPER

PROBLEM TO BE SOLVED: To sufficiently join an outside container to an inside container made of a plastic at a bottom thereof, improve the drop shock strength of the inside container, and secure its selfsupportability and safety by specifying a covering rate of the outside container made of paper, which covers the inside container. SOLUTION: A composite container is constituted from an outside container 1 made of paper and having shape retaining properties and an inside container 2 made of a plastic and contained in the outside container 1. The outside container 1 is provided with bottom flaps 5 which form a bottom at a lower end of a body of the outside container 1 with the aid of fold-lines. The biaxially stretched blow molded inside container 2 of the composite container has a bottom whose cross-sectional shape is generally formed into a circularlly arcuate shape due to the convergence of a wall thickness or the prevention of the lack of cooling. A portion other than a circularly arcuate part is formed into a plane, and the plane portion is joined to and covered with the outside container mainly composed of paper. The area of this circularly arcuate shape has a covering rate of 40% or more of the total area of the bottom, and complete covering is also possible. The outer container 1 fixes the inside container 2 with an adhesive, etc., to reinforce the inside container. Accordingly, the inside container is not easily broken even in the case where a drop shock is applied thereto.