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Plastic bag producing apparatus

A technology of a plastic bag and a cutting device, which is applied in the field of plastic bag devices, can solve the problems of inability to pull and tear off, inability to be pulled and torn off by a waste removal device, and small waste.

Inactive Publication Date: 2004-07-07
TOTANI GIKEN KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, the scrap may be too small to be pulled and torn off by the scrap removal device
Scraps may be specially shaped so that they cannot be pulled and torn off by scrap removal devices

Method used

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  • Plastic bag producing apparatus
  • Plastic bag producing apparatus
  • Plastic bag producing apparatus

Examples

Experimental program
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Embodiment Construction

[0022] Referring now to the accompanying drawings, figure 1 A device according to the invention for the continuous production of plastic bags 2 having a peripheral shape is shown. The apparatus comprises a web feeder 4 which intermittently feeds a length of web material 6 along a longitudinal feed path. In this embodiment, the web feeding device 4 comprises a pair of feed rollers between which the web material 6 is sandwiched. The feed roller 4 is rotated by a drive means such as a motor so that the base material 6 can be intermittently fed for a length along a horizontally extending feed path. The base material 6 includes two or more layers of plastic films.

[0023] The device further comprises web cutting devices 8a and 8b arranged along the feed path. The web cutting means 8a and 8b comprise THOMSON blade means opposite to the web material 6 . Described device further comprises driving device 10, whenever base material 6 feeds intermittently and stops temporarily, unde...

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PUM

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Abstract

The apparatus comprises web feeding means by which a web material is intermittently fed for a length along a longitudinal feeding path. The web material comprises two or more layers of plastic film. Web cutting means is disposed along the feeding path. The web cutting means has a shape corresponding completely or incompletely to the shape of circumference of plastic bag so that the web material can be cut into the shape of circumference of plastic bag by the web cutting means whenever the web material is intermittently fed and temporarily stopped, to successively make the plastic bags with a waste kept continuous. The web cutting means comprises partially cutting means. The plastic bag has an upstream edge along which the web material is partially cut by the partially cutting means so that the plastic bag can be kept connected with the waste at the upstream edge of plastic bag. Drawing means is disposed downstream of the cutting means. The waste is diverged from the plastic bag, directed to and drawn by the drawing means after the web material is cut. Discharge means is disposed downstream of the cutting means. The plastic bag is directed to the discharge means without the waste. The plastic bag is then pulled by the discharge means to be torn from the waste at the upstream edge of plastic bag. The plastic bag is then discharged by the discharge means.

Description

technical field [0001] The invention relates to a device for the continuous manufacture of plastic bags having a peripheral shape. Background technique [0002] As disclosed in US-2001-0053737, there are already commercially available devices for the continuous manufacture of plastic bags having a peripheral shape. The apparatus includes web feed means by which web material is intermittently fed a length along a longitudinal feed path. The base material includes two or more layers of plastic film. The apparatus further includes web cutting means disposed along the feed path. In the disclosed apparatus, whenever the base material is intermittently fed and temporarily stopped, the base material is partially or completely cut by the base cutting device to continuously manufacture plastic bags while the waste is broken into pieces. [0003] The device is therefore problematic for waste. In the disclosed device, the scrap is pulled by the scrap removal device and torn from th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B26D7/18B26F1/40B29D99/00B31B19/16B31B23/00B31B23/14B31B50/16B65H35/06
CPCB31B2219/145B31B2241/00B26F1/40B26D7/18B31B41/00B31B19/16B31B2237/10B31B23/00B26F2001/407B31B2160/10B31B70/16B31B2155/00Y10T156/1317Y10T156/12Y10T156/1737B31B2155/002B31B2170/00
Inventor 户谷干夫
Owner TOTANI GIKEN KOGYO CO LTD
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