Browse Prior Art Database

BULK BAG FILTER-VENT

IP.com Disclosure Number: IPCOM000027558D
Original Publication Date: 1997-Oct-31
Included in the Prior Art Database: 2004-Apr-08
Document File: 2 page(s) / 67K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a device for venting and filtering of bag containers used, for example, for toting and dispensing toner materials, for example, bulk bags. The filtered vent allows the bulk bag to be cleanly collapsed and folded when empty without damaging the bag for later reuse. Much toner dust typically generated from using bulk bags occurs while the bags are being folded after being emptied. The dust discharge results in increased housekeeping costs, for example, requiring greater dust abatement and control. The filter vent disclosed herein, is integral with the bag surface and located in the vicinity of the bag fill port, and comprises: a grommet, with a center opening or hole, which grommet is fastened to the bag near the grommet's periphery; a screen or filter element traversing the center opening of the grommet; and a flexible nipple member attached to the grommet and surmounting the center opening. The fdter-vent assembly acts as a one-way value to allow air, but not particulate material, to egress from within the bag once emptied and input and discharge ports are closed. The flexible nipple is formed so that it is ordinarily collapsed, and optionally folded back upon itself, forming a sealed passage when the bag in not under pressure, for example, when used in conventional particulate discharge. When the bag is substantially empty, the bag can be readily folded with the release of internal air pressure through the one way filter vent. The filter element is for both face and depth loading and suitable for multiple or repeated use. The filter and nipple value can be replaced providing for extended use of the bag.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 74% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

BULK BAG FILTER-VENT

Proposed Classification Paul M. Wegman U. S. C1.430/059

Int. C1. G03g 05/06

Disclosed is a device for venting and filtering of bag containers used, for example, for toting and dispensing toner materials, for example, bulk bags. The filtered vent allows the bulk bag to be cleanly collapsed and folded when empty without damaging the bag for later reuse. Much toner dust typically generated from using bulk bags occurs while the bags are being folded after being emptied. The dust discharge results in increased housekeeping costs, for example, requiring greater dust abatement and control. The filter vent disclosed herein, is integral with the bag surface and located in the vicinity of the bag fill port, and comprises: a grommet, with a center opening or hole, which grommet is fastened to the bag near the grommet's periphery; a screen or filter element traversing the center opening of the grommet; and a flexible nipple member attached to the grommet and surmounting the center opening. The fdter-vent assembly acts as a one-way value to allow air, but not particulate material, to egress from within the bag once emptied and input and discharge ports are closed. The flexible nipple is formed so that it is ordinarily collapsed, and optionally folded back upon itself, forming a sealed passage when the bag in not under pressure, for example, when used in conventional particulate discharge. When the bag is substantially empty, the b...