# US 12,005,668 B2 · Carton production method

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- Number: US 12,005,668 B2
- Document ID: US12005668B2
- Status: Granted
- Kind: B2
- Application number: 17/920,138
- Filed: 2021-02-25
- Published: 2023-05-25
- Granted: 2024-06-11
- Earliest claimed: 2020-04-27
- Assignees: Kyoto Seisakusho Co., Ltd.
- Applicants: Kyoto Seisakusho Co., Ltd.
- Inventors: Motoyuki Kitamura
- Web page: https://patentgrep.com/patent/US12005668B2

## CPC

- B31B 50/62: by adhesives
- B31B 50/622: {Applying glue on already formed boxes}
- B31B 50/26: Folding sheets, blanks or webs
- B65D 5/52: External stands or display elements for contents
- B31B 50/624: {Applying glue on blanks}
- B31B 2100/0022: {made from tubular webs or blanks, including by tube or bottom forming operations}
- B31B 2100/0024: {having all side walls attached to the bottom}
- B31B 2110/35: rectangular, e.g. square
- B31B 2120/102: {with a hinged cover}
- B65D 5/4208: {Means facilitating suspending, lifting, handling, or the like of containers (handles B65D5/46)}
- 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

Provided is a carton production method capable of preventing quality deterioration which may happen during the sealing due to adhesion of an adhesive. This method comprises: a first insertion step K1 of rotating the lid body toward the one side surface of the box body to a position where the inserting flap overlaps the suspension hole; an application step K2 of applying an adhesive to the inserting flap through the suspension hole; a second insertion step K3 of curving the one side surface of the box body inserting the insertion flap and closing the upper surface of the box body with the lid body; and an adhesion step K4 of bonding the inserting flap to the inside of the one side surface of the box body.

## Claims

### Claim 1

A carton production method for a carton including
a box body having an upper surface that is opened,
a suspension piece extending upward from an upper end of one side surface of the box body,
a lid body that is provided so as to be rotatable about an upper end of another side surface of the box body and closes the upper surface of the box body,
an inserting flap provided to the lid body and on an opposite side of the upper end of the another side surface of the box body, so as to be inserted in an inner side of the one side surface of the box body, and
a suspension hole penetrating the suspension piece,
the method comprising:
a first insertion step of rotating the lid body toward the one side surface of the box body to a position where the inserting flap overlaps the suspension hole;
an application step of applying an adhesive to the inserting flap through the suspension hole;
a second insertion step of curving the one side surface of the box body so as to protrude away from the inserting flap, inserting the insertion flap, and closing the upper surface of the box body with the lid body; and
an adhesion step of bonding the inserting flap, to which the adhesive is applied, to the inside of the one side surface of the box body.

### Claim 2 (depends on 1)

The carton production method according to claim 1, wherein
in the application step,
the adhesive is discharged from a tip of a nozzle positioned on a side opposite to the inserting flap with respect to the suspension piece toward the inserting flap through the suspension hole, and
a separation distance between the tip of the nozzle and the inserting flap is 5 mm or less.