Japan, July 14 -- OSHIO SANGYO KK has got intellectual property rights for 'PACKAGING BAG AND PRODUCTION METHOD THEREOF.' Other related details are as follows:
Application Number: JP,2021-055675
Category (FI): B65D33/00@C
Stage: PROBLEM TO BE SOLVED: To provide a packaging bag and a production method thereof allowing packaging bags stable in quality to be produced.SOLUTION: A production method of a packaging bag 1 is provided with: a lower part bonding process of forming lower seal parts 31, 34 such that unbonded edge parts 13 are formed on upper parts of a pair of laminated side sheets 11; an opening process of opening an opening part 14 in the unbonded edge parts 13; an insertion process of inserting a spout 21 in the opening part 14; and an upper part bonding process of forming a spout bonding part 36 bonding an insertion part 21a of the spout 21 and inner surfaces of the pair of side sheets 11 as well as forming upper seal parts 33, 35 extending from both sides of the spout 21 to bond the unbonded edge part 13. The lower part bonding process forms a lower seal part 34 in a way a length A of the spout 21 in an axial direction N from an attachment end edge 11a of the spout 21 to a lower edge 13a of the unbonded edge part 13 is longer than a length B of the spout bonding part 36 in the axial direction N.SELECTED DRAWING: Figure 3 (Grant)
Filing Date: March 29, 2021
Publication Date: Oct. 12, 2022
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
