# US 10,501,224 B2 · Pouring nozzle made from packaging laminate film and method of forming tear-inducing flaw in packaging laminate film

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- Number: US 10,501,224 B2
- Document ID: US10501224B2
- Status: Granted
- Kind: B2
- Application number: 15/569,213
- Filed: 2016-12-13
- Published: 2018-04-19
- Granted: 2019-12-10
- Earliest claimed: 2016-01-04
- Assignees: Yushin Co., Ltd.
- Applicants: Yushin Co., Ltd.
- Inventors: Katsunori Futase
- Web page: https://patentgrep.com/patent/US10501224B2

## CPC

- B65B 61/02: for perforating, scoring {, slitting,} or applying code or date marks on material prior to packaging {(scoring ampoules B65B3/006)}
- 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
- B31B 70/25: {Ruling}
- B65D 25/42: Integral or attached nozzles or spouts
- B65D 75/5822: {and defining, after tearing, a small dispensing spout, a small orifice or the like}
- B65D 75/5866: {Integral spouts}
- B23K 2103/172: {wherein at least one of the layers is non-metallic}
- B23K 2103/42: {Plastics other than composite materials}
- B65B: MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING (bundling and pressing devices for cigars A24C1/44; devices for tensioning and securing binders adapted to be supported by the article or articles to be bound B25B25/00; applying closure members to bottles, jars or similar containers B67B1/00-B67B6/00; concurrent cleaning, filling and closing of bottles B67C7/00; emptying bottles, jars, cans, casks, barrels or similar containers B67C9/00)
- 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
- 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)
- 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

## Abstract

A pouring nozzle is made from a packaging laminate film which is excellent in the tear-opening property and improves lowering of a liquid draining property in pouring. A method forms a tear-inducing flaw for opening a packaging laminate film suitable for use in a package bag for housing and keeping a liquid packed material. A pouring nozzle is made from a packaging laminate film having a laminate structure of not less than three layers including a base film layer and non-oriented sealant layers laminated on front and rear surface sides of the base film layer and having a pouring path at its central portion. A tear-inducing flaw is formed by irradiating a laser beam across the pouring path and to a position where a portion of at least one of the non-oriented sealant layers on the front and rear surface sides of the base film layer is displaced by pushing.

## Claims

### Claim 1

A pouring nozzle comprising:
a packaging laminate film, which the pouring nozzle is made from, with a laminate structure of not less than three layers comprised of a base film layer and non-oriented sealant layers laminated on front and rear surface sides of the base film layer and having a pouring path at its center portion, wherein
a tear-inducing flaw is formed by irradiating a laser beam across the pouring path and to a position where a portion of at least one of the non-oriented sealant layers on the front and rear surface sides of the base film layer is displaced by pushing.

### Claim 2 (depends on 1)

The pouring nozzle according to claim 1, wherein a non-oriented sealant film of the non-oriented sealant layers that is in an outer surface side of the pouring nozzle is displaced by pushing aside.

### Claim 3 (depends on 1)

The pouring nozzle according to claim 1, wherein the base film layer is made of polyester film, nylon film or ethylene vinyl alcohol copolymer film and the non-oriented sealant layers are made of polyethylene film, polypropylene film, ionomer film or ethylene vinyl acetate copolymer film.

### Claim 4 (depends on 1)

The pouring nozzle according to claim 1, wherein a width of the tear-inducing flaw is in a range of 50-500 μm.

### Claim 5 (depends on 1)

The pouring nozzle according to claim 1, wherein a width of the portion displaced by pushing in the at least one of the non-oriented sealant layers is in a range of 100-3000 μm.

### Claim 6 (depends on 1)

The pouring nozzle according to claim 1, wherein a thickness of the base film layer in a position of forming the tear-inducing flaw is not more than ⅓ of a thickness of a position of the base film layer not forming the tear-inducing flaw.

### Claim 7 (depends on 1)

The pouring nozzle according to claim 1, wherein a remaining thickness of the portion displaced by pushing in the at least one of the non-oriented sealant layers from the base film layer is in a range of 0-10 μm.

### Claim 8

A method of forming a tear-inducing flaw in a packaging laminate film with a laminate structure of not less than three layers comprised of a base film layer and non-oriented sealant layers laminated on front and rear surface sides of the base film layer, comprising:
preliminarily displacing at least one of the non-oriented sealant layers on the front and rear surface sides by pushing at a predetermined forming position of the tear-inducing flaw and thereafter irradiating a laser beam at a position corresponding to a portion displaced by pushing to cause sublimation, elimination or evaporation of only the base film layer to thereby form the tear-inducing flaw.

### Claim 9 (depends on 8)

The method of forming the tear-inducing flaw according to claim 8, wherein the tear-inducing flaw is provided at a predetermined opening position of a pouring nozzle made from the packaging laminate film.

### Claim 10 (depends on 8)

The method of forming the tear-inducing flaw according to claim 8, wherein the base film layer has an absorption rate to the laser beam higher than that of the non-oriented sealant layers.

### Claim 11 (depends on 8)

The method of forming the tear-inducing flaw according to claim 8, wherein the laser beam is a carbon dioxide laser or YAG laser.

### Claim 12 (depends on 8)

The method of forming the tear-inducing flaw according to claim 8, wherein the at least one of the non-oriented sealant layers is displaced by pushing with a rotating roller under heating or at room temperature, or a pressure plate under heating or at room temperature.

### Claim 13 (depends on 12)

The method of forming the tear-inducing flaw according to claim 12, wherein a heating temperature of the rotating roller or the pressure plate is higher than a softening temperature of the at least one of the non-oriented sealant layers.

### Claim 14 (depends on 8)

The method of forming the tear-inducing flaw according to claim 8, wherein a remaining thickness of the at least one of the non-oriented sealant layers displaced by pushing from the base film layer is in a range of 0-10 μm.