WO2000030938A1 - Systeme de d'evacuation d'air d'un sac a chargement en vrac vide - Google Patents

Systeme de d'evacuation d'air d'un sac a chargement en vrac vide Download PDF

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Publication number
WO2000030938A1
WO2000030938A1 PCT/US1998/025035 US9825035W WO0030938A1 WO 2000030938 A1 WO2000030938 A1 WO 2000030938A1 US 9825035 W US9825035 W US 9825035W WO 0030938 A1 WO0030938 A1 WO 0030938A1
Authority
WO
WIPO (PCT)
Prior art keywords
bag
bulk bag
side port
bulk
degassing
Prior art date
Application number
PCT/US1998/025035
Other languages
English (en)
Inventor
John William Price
Peter Gerald Sasson, Jr.
Original Assignee
The Goodyear & Tire Rubber Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by The Goodyear & Tire Rubber Company filed Critical The Goodyear & Tire Rubber Company
Priority to PCT/US1998/025035 priority Critical patent/WO2000030938A1/fr
Priority to AU14679/99A priority patent/AU1467999A/en
Publication of WO2000030938A1 publication Critical patent/WO2000030938A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00—Unpacking of articles or materials, not otherwise provided for

Definitions

  • This invention pertains to methods and apparatuses for degassing empty bulk bags in preparation for return transport to suppliers, and more particularly to methods and apparatuses for utilizing vacuum means to remove entrapped air, while preventing residue from being dispelled into the surrounding air.
  • the degassing system utilizing an associated vacuum source to degas an empty bulk bag 16 having a top spout, a bottom spout and an interior is provided.
  • the degassing station includes a side port extending from the associated vacuum source, valve means for selectively allowing communication between said side port and said vacuum means, and connecting means for securely connecting said bulk bag to said side port.
  • connection means is an inflatable collar.
  • a return carton is provided for holding said bulk bags after utilization of the degassing system.
  • a method for degassing an empty bulk bag at a degassing station utilizing an associated vacuum source is provided.
  • the empty bulk bag includes a top spout, a bottom spout and an interior.
  • the method being characterized by the steps of: providing a side port extending from said associated vacuum source, providing valve means for selectively allowing communication between the side port and the vacuum means, providing connecting means for securely connecting the bulk bag to the side port, providing an opening to the interior of the bulk bag through one of the spouts, mounting the bag to the side port via one of the spouts, utilizing the connecting means, opening the valve means to at least partially collapse the bulk bag, closing the valve means after the bulk bag is at least partially collapsed, removing the bulk bag from the side port after the valve is closed, and, folding up the bag after it is at least partially collapsed.
  • One advantage of the present invention is that industrial facilities may be readily adapted to provide the degassing system of the present invention.
  • Another advantage of the present invention is that potentially hazardous residue in the bulk bag is prevented from dispelling into the surrounding air.
  • Another advantage of the present invention is its simplicity of implementation. Another advantage of the present invention is that users of bulk material can more efficiently return bulk bags to a supplier for reuse.
  • Another advantage of the invention is that the bulk bag is protected from damage.
  • Another advantage of the invention is that the operator's exposure to potentially hazardous situations are minimized.
  • Figure 1 is a perspective view of a degassing station and empty bulk bag according to the invention
  • Figure 2 is a perspective view illustrating a degassing method according the invention
  • Figure 1 shows a degassing station 10 for reducing the spatial volume occupied by an empty bulk bag 16.
  • empty refers to that state wherein nearly all of the contents of the bulk bag have been removed and the interior of the bulk bag 16 a gas, generally air, and the spatial volume occupied by the bulk bag 16 is at or nearly at a maximum value.
  • the degassing station 10 is linked with an associated vacuum source 20 such as is commonly used in industrial applications as dust collection means.
  • the preferred embodiment of the invention deals with bulk bags of the type having an top inlet spout 24 for receiving bulk material into the bag and a bottom outlet spout 28 for allowing material to be removed from the bag when the downspout is released.
  • Various means for transporting the bulk bag 16 to the degassing station 10 may be employed, such as conveyors and fork lifts, not forming a part of the present invention.
  • the associated vacuum source 20 is equipped with a side port 32 projecting from the vacuum 20 and valve means 38 for allowing selective communication between the side port 32 and the vacuum source 20. Connection means for connecting the bulk bag 16 to the side port 32 through either the top spout 24 or the bottom spout 28 is provided.
  • the bulk bag 16 is connected to the side port 32 via the top spout 24 .
  • connection means comprises an inflatable collar 40 to firmly connect the bulk bag 16 to the side port 32 while minimizing air leakage around the connection.
  • Other connection means able to accomplish the intended function of the inflatable collar 40 may be employed and include, but are not limited to, hook and loop fasteners, straps, locking collars and the like (all not shown).
  • the inflatable collar 40 is inflated by any known means in the art including utilizing pressurized air.
  • FIG. 2 a preferred embodiment of a process for degassing an empty bulk bag 16 at a degassing station 10 is described.
  • the empty bulk bag 16 is transported to the degassing station 10 by any convenient means, such as a fork lift (not shown).
  • An operator manually attaches the bulk bag 16 to the side port 32 via top spout 24.
  • Connection means such as inflatable collar 40 is utilized to securely connect the bulk bag 16 to the side port 32. It is an important aspect of the present invention that any other spouts or openings be sealed to ensure the pull of the vacuum source on the entrapped gas.
  • the operator opens valve means 38 so that the interior 44 of the bulk bag 16 communicates with the associated vacuum source 20.
  • the air inside the bulk bag 16 is evacuated along with some of the residual bulk material, and the bulk bag 16 is at least partially collapsed.
  • first the valve means 38 is closed before the bulk bag 16 is removed from the vacuum source 20 and then the bulk bag 16 is manually collapsed further.
  • the bulk bag 16 is retained on the vacuum source 20 with the valve means 38 open while the bulk bag 16 is manually collapsed further.
  • the valve means 38 is closed, the bulk bag 16 is removed from the vacuum source.
  • the collapsed bulk bag 16 is then placed into a return carton 48 for transport back to the supplier.
  • the efficiency of the return of bulk bags 16 to the supplier is increased if the spatial volume of the bulk bag 16 is reduced enough to allow several bulk bags 16 to be packed into the return carton 48.
  • the spatial volume of the bulk bag 16 after application of the inventive process is from 20% to 50% of the spatial volume of the bulk bag 16 when filled with gas and bulk material residue.
  • An empty polypropylene bulk bag 16 having an interior occupied by air and bulk material residue constitutes an initial spatial volume.
  • the bulk bag 16 of the present example includes a top spout 24 and a bottom spout 28.
  • the top spout 24 of the exemplary bulk bag 16 has a 14 inch diameter.
  • the bulk bag 16 is transported to a degassing station 10 according to the present invention.
  • an operator fits the top spout 24 around the side port 32 fitted with the inflatable collar 40 to firmly connect the bulk bag 16 to the side port 32.
  • the inflatable collar 40 is inflated so as to create a seal against the inside diameter of the bulk bag 16.
  • the inflatable collar 40 is inflated by pressurized air that is communicated through the interior of the side port 32.
  • a pressure regulator that takes house air at 80 psi down to 7 psi may be utilized as well as a 3-way hand valve that allows both air flow to the collar 40 and exhaust air from the collar 40.
  • Valve means 38 are opened to allow communication of the bag interior 44 with the vacuum source 20, operating at approximately 10 in. Hg. After sufficient time as elapsed to allow the interior 44 to be evacuated, the valve means 38 is closed. The inflatable collar 40 is deflated. The bulk bag 16 is removed from the side port 32 and the bulk bag 16 is manually folded or rolled until the spatial volume occupied by the bulk bag 16 is at or nearly at a minimum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

L'invention concerne un poste et un procédé de d'évacuation d'air permettant de réduire la taille de sacs à chargement en vrac vides afin de les renvoyer au fournisseur. Ce poste de d'évacuation d'air comprend un orifice latéral (32) en communication sélective avec une alimentation de vide associée (20). L'embouchure d'entrée ou l'embouchure de sortie du sac est fixée à l'orifice latéral auquel est relié le sac à l'aide d'un collier gonflable avant l'ouverture d'une soupape assurant la communication entre l'intérieur du sac et l'alimentation de vide, ce qui permet de réduire le volume spatial du sac à chargement en vrac. On réduit encore le volume spatial du sac en le pliant à la main après fermeture de la soupape et déconnexion du sac de l'orifice latéral de manière à le disposer dans un carton aux côtés d'autres sacs destiné à être renvoyé au fournisseur.
PCT/US1998/025035 1998-11-23 1998-11-23 Systeme de d'evacuation d'air d'un sac a chargement en vrac vide WO2000030938A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1998/025035 WO2000030938A1 (fr) 1998-11-23 1998-11-23 Systeme de d'evacuation d'air d'un sac a chargement en vrac vide
AU14679/99A AU1467999A (en) 1998-11-23 1998-11-23 Empty bulk bag degassing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1998/025035 WO2000030938A1 (fr) 1998-11-23 1998-11-23 Systeme de d'evacuation d'air d'un sac a chargement en vrac vide

Publications (1)

Publication Number Publication Date
WO2000030938A1 true WO2000030938A1 (fr) 2000-06-02

Family

ID=22268359

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/025035 WO2000030938A1 (fr) 1998-11-23 1998-11-23 Systeme de d'evacuation d'air d'un sac a chargement en vrac vide

Country Status (2)

Country Link
AU (1) AU1467999A (fr)
WO (1) WO2000030938A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703933A1 (fr) * 1993-04-15 1994-10-21 Prunevieille Jean Michel Dispositif pour le nettoyage interne et le pliage de conteneurs souples et son procédé de mise en Óoeuvre.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703933A1 (fr) * 1993-04-15 1994-10-21 Prunevieille Jean Michel Dispositif pour le nettoyage interne et le pliage de conteneurs souples et son procédé de mise en Óoeuvre.

Also Published As

Publication number Publication date
AU1467999A (en) 2000-06-13

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