SEAL STRUCTURE OF GUSSETTED BAG AND GUSSETED BAG

Title:

SEAL STRUCTURE OF GUSSETTED BAG AND GUSSETED BAG

Document Type and Number:

WIPO Patent Application WO/2005/019051

Kind Code:

A1

Abstract:

[PROBLEMS] A seal structure having excellent impact bearing capability, used for a gusseted bag likely to be subjected to an impact load. [MEANS FOR SOLVING PROBLEMS] A seal structure for a gusseted bag whose opening is sealed has a pair of flat surface portions and a pair of side surface portions. Seal portions (20) for sealing the opening are constructed such that flat surface portions (2) and side surface portions (3) are adhered to each other for a predetermined depth from end edges of the opening side, with the side surface portions interfolded at folding lines (4). An impact absorbing seal portions (Q1) are provided at positions above intersections between inner edges of the seal portions (20) and the folding line (4), the positions being on the outer sides of the folding lines (4).

Inventors:

SHIRAI KAZUYOSHI (JP)
SHINOHARA TOMONARI (JP)
IGOTA SHOJI (JP)

Application Number:

PCT/JP2004/012022

Publication Date:

March 03, 2005

Filing Date:

August 20, 2004

Export Citation:

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Assignee:

HOSOKAWA YOKO KK (JP)
SHIRAI KAZUYOSHI (JP)
SHINOHARA TOMONARI (JP)
IGOTA SHOJI (JP)

International Classes:

B65D30/16; B65D30/20; B65D33/38; (IPC1-7): B65D30/16

Foreign References:

JP2002154553A	2002-05-28
JPH10287344A	1998-10-27
JP2002179102A	2002-06-26
JP2002179102A	2002-06-26
JPH10250747A	1998-09-22

Other References: