# US 10,370,154 B2 · Packing bag and manufacturing method for the packing bag

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- Number: US 10,370,154 B2
- Document ID: US10370154B2
- Status: Granted
- Kind: B2
- Application number: 15/266,347
- Filed: 2016-09-15
- Published: 2018-01-11
- Granted: 2019-08-06
- Earliest claimed: 2016-07-07
- Assignees: Mupack Ozaki Co., Ltd.
- Applicants: Mupack Ozaki Co., Ltd.
- Inventors: Ikuko Ozaki; Takeo Takashiro
- Web page: https://patentgrep.com/patent/US10370154B2

## CPC

- B65D 33/007: {for facilitating the separation of the two walls, e.g. walls of inequal height, tabs; for maintaining the mouth of the sack or bag open}
- B31B 70/00: Making flexible containers, e.g. envelopes or bags
- B31B 70/266: {involving gusset-forming}
- B31B 70/36: by continuously feeding them to stationary members, e.g. plates, ploughs or cores
- B31B 70/8132: {Applying the closure elements in the machine direction}
- B65D 33/2525: {located between the fastener and the product compartment}
- B65D 33/2541: {characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape}
- B65D 75/58: Opening or contents-removing devices added or incorporated during package manufacture {(B65D75/36, B65D85/1027 take precedence)}
- B23K 26/364: for making a groove or trench, e.g. for scribing a break initiation groove
- B23K 26/402: involving non-metallic material, e.g. isolators
- B23K 2103/172: {wherein at least one of the layers is non-metallic}
- B23K 2103/42: {Plastics other than composite materials}
- B31B 70/25: {Ruling}
- B31B 2155/00: Flexible containers made from webs
- B31B 2155/0014: {having their openings facing transversally to the direction of movement}
- B31B 2160/00: Shape of flexible containers
- B31B 2160/10: rectangular and flat, i.e. without structural provision for thickness of contents
- B31B 2160/20: with structural provision for thickness of contents
- B31B 2170/20: having multi-layered walls, e.g. laminated or lined
- B65D 33/14: Suspension means (handles B65D33/06)
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B31B: MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER (making wound articles, e.g. wound tubes, B31C; combined making and filling B65B)
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM

## Abstract

A packing bag to store a stored article Z with tight seal by a welded sheet material 1 of resin in which a separation-prepared line portion 5, separable by predetermined tensile force F by human hands to take out the stored article Z, is provided along an opening-prepared side portion 10, the sheet material 1 has a layered unit construction in which first and second welding resin layers 61A and 61B are disposed on both sides, and a barrier layer 60 is disposed on a middle position, the separation-prepared line portion 5 is composed of a half-cut first laser-worked groove 7A concaved on the first welding resin layer 61A and a half-cut second laser-worked groove 7B concaved on the second welding resin layer 61B, and, the first and second laser-worked grooves 7A and 7B are formed barely damaging the barrier layer 60.

## Claims

### Claim 1

A packing bag to store a stored article with tight seal by a welded sheet material of resin comprising a construction in which:
a separation-prepared line portion, separable by predetermined tensile force by human hands to take out the stored article, is provided along an opening-prepared side portion;
the sheet material has a layered unit construction in which first and second welding resin layers are disposed on both sides, and a barrier layer is disposed on a middle position;
the separation-prepared line portion is composed of a half-cut first laser-worked groove concaved on the first welding resin layer and a half-cut second laser-worked groove concaved on the second welding resin layer;
the first and second laser-worked grooves are formed barely damaging the barrier layer;
and the first laser-worked groove is formed straight, and the second laser-worked groove is formed in concave-convex wave as to cross the first laser-worked groove in top view.

### Claim 2

A packing bag to store a stored article with tight seal by a welded sheet material of resin comprising a construction in which:
a separation-prepared line portion, separable by predetermined tensile force by human hands to take out the stored article, is provided along an opening-prepared side portion;
the sheet material has a layered unit construction in which first and second welding resin layers are disposed on both sides, and a barrier layer is disposed on a middle position;
the separation-prepared line portion is composed of a half-cut first laser-worked groove concaved on the first welding resin layer and a half-cut second laser-worked groove concaved on the second welding resin layer;
the first and second laser-worked grooves are formed barely damaging the barrier layer;
and the first laser-worked groove is formed straight, and the second laser-worked groove is formed in concave-convex wave and disposed to be apart from the first laser-worked groove without crossing the first laser-worked groove in top view.

### Claim 3

A packing bag to store a stored article with tight seal by a welded sheet material of resin comprising a construction in which:
a separation-prepared line portion, separable by predetermined tensile force by human hands to take out the stored article, is provided along an opening-prepared side portion;
the sheet material has a layered unit construction in which first and second welding resin layers are disposed on both sides, and a barrier layer is disposed on a middle position;
the separation-prepared line portion is composed of a half-cut first laser-worked groove concaved on the first welding resin layer and a half-cut second laser-worked groove concaved on the second welding resin layer;
the first and second laser-worked grooves are formed barely damaging the barrier layer; and
the first and second laser-worked grooves are formed in concave-convex wave, and phases of the concave-convex waves of the first and second laser-worked grooves are made different as to cross the first and second laser-worked grooves in top view.