Patent EA-001676-B1 (EA)
Title: Packaging case and packaging material therefor
Inventor: MARBE PETER
IPC: B65D17/32
Filed: 1998-11-19
Abstract: 1. A packaging container comprising: (a) a pair of seal portions; (b) at least five side-surface panel portions for forming a circumferential wall; (c) an end-surface panel portion disposed between said seal portion and said side-surface panel portions and adapted to form a polygonal end-surface portion in cooperation with an intermediate portion of said seal portion; and (d) flap portions projected, together with end portion of said seal portion, from said end-surface panel portion, each of said flap portions being bent toward a specified panel portion among said side-surface panel portions and being welded to said specified panel portion. 2. A packaging container according to Claim 1, further comprising: (a) a first folding portion formed between each of said flap portions and corresponding one of said specified panel portions; and (b) a second folding portion formed between said end-surface panel portion and each side-surface panel portion adjacent to each of said specified panel portions. 3. A packaging container according to Claim 2, wherein each of said first and second folding portions has a lower folding portion formed adjacent to said side-surface panel portion and being superposed on said side-surface panel portion, as well as an upper folding portion formed adjacent to said lower folding portion and being superposed on said lower folding portion. 4. A packaging container according to Claim 3, wherein  (a) the upper folding portion and the lower folding portion of said first folding portion each have a rectangular shape; and (b) the upper folding portion and the lower folding portion of said second folding portion each have a triangular shape. 5. A packaging container according to Claim 3 or 4, wherein  (a) crush portions are formed in regions surrounded by said flap portions, the upper folding portions of said first folding portions, and the upper folding portions of said second folding portions; and (b) said crush portions are crushed when said flap portions are bent toward said specified panel portions. 6. A packaging material for a packaging container comprising: (a) a pair of seal portions; (b) at least five side-surface panel portions for forming a circumferential wall; (c) an end-surface panel portion disposed between said seal portion and said side-surface panel portions and adapted to form a polygonal end-surface portion in cooperation with an intermediate portion of said seal portion; and (d) flap portions projected, together with end portion of said seal portion, from said end-surface panel portion, each of said flap portions being bent toward a specified panel portion among said side-surface panel portions and being welded to said specified panel portion. 7. A packaging material for a packaging container according to Claim 6, further comprising: (a) a first folding portion formed between each of said flap portions and corresponding one of said specified panel portions; and (b) a second folding portion formed between said end-surface panel portion and each side-surface panel portion adjacent to each of said specified panel portions. 8. A packaging material for a packaging container according to Claim 7, wherein each of said first and second folding portions has a lower folding portion formed adjacent to said side-surface panel portion and being superposed on said side-surface panel portion, as well as an upper folding portion formed adjacent to said lower folding portion and being superposed on said lower folding portion. 9. A packaging material for a packaging container according to Claim 8, wherein (a) the upper folding portion and the lower folding portion of said first folding portion each have a rectangular shape; and (b) the upper folding portion and the lower folding portion of said second folding portion each have a triangular shape. 10. A packaging material for a packaging container according to Claim 8 or 9, wherein  (a) crush portions are formed in regions surrounded by said flap portions, the upper folding portions of said first folding portions, and the upper folding portions of said second folding portions; and (b) said crush portions are crushed when said flap portions are bent toward said specified panel portions.