Method for opening spout attachment portion of a bag

Patent metadata

Field	Value
Publication number	US-10124919-B2
Application number	US-201514801690-A
Country	US
Kind code	B2
Filing date	Jul 16, 2015
Priority date	Jul 17, 2014
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A method and device for opening spout attachment portion of a bag being set up such that films on both sides of a spout attachment portion ( 2 ) of a bag ( 1 ) are suction-held up by a pair of suction cups ( 8 ), and the spacing between the pair of suction cups is widened to open the spout attachment portion, after which a gas is blown from the spout attachment portion into the bag by a gas blowing member ( 9 ); and when the gas is blown into, a clamping member ( 19 ) clamps a position under the gripper that is on the top edge ( 6 ) side of the bag from both sides of the bag, thus suppressing outflow of the gas blown into the bag from the top edge, thus allowing entire bag to inflate for its entirety substantially and the spout attachment portion to be kept opened.

First claim

The invention claimed is:

1. A method for opening a spout attachment portion, the method comprising:
providing a pair of grippers,
clamping, with the pair of grippers, both sides of a spout attachment portion of a bag in which a corner at a top edge and one of side edges of the bag has been cut to form the spout attachment portion; and
conveying, with the pair of grippers, the bag along a specific conveyance path while having the bag hung down so that the spout attachment portion is substantially horizontal,

providing a pair of suction cups,
suction-holding, with the pair of suction cups, films on both sides of the spout attachment portion of the bag during the conveyance, and
widening a spacing between the pair of suction cups to open the spout attachment portion, and thereafter

providing a gas blowing member,
blowing, with the gas blowing member, a gas into the bag to inflate the bag,

wherein
the bag is unsealed at the top edge, and
providing a clamping member, and
clamping, by the clamping member and when the gas is blown into the bag by the gas blowing member, a position under the gripper that is disposed on the top edge side of the bag from both sides of the bag, thus suppressing outflow of the gas blown into the bag from the top edge, wherein the position clamped by the clamping member is offset from a position of the spout attachment portion along the top edge side of the bag.

2. The method for opening a spout attachment portion according to claim 1 , wherein when the bag is inflated, slippage is allowed to occur between the films and a clamping face of the clamping member.

Assignees

• Toyo Jidoki Kk

Inventors

• Yoshikane Tohru
• Yamasaki Jyunji

Classifications

• B31B1/00

  Operations & Transport · mapped topic

• B31B2219/9054

  Operations & Transport · mapped topic

• B65B43/34

  by internal pressure · CPC title

• B65B43/36 Primary

  applied pneumatically · CPC title

• B65D33/16

  End- or aperture-closing arrangements or devices (valves of valve bags {B65D31/14}; closures of filled bags B65D77/10) · CPC title