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WO2008039627A2 - Système de remplissage - Google Patents

Système de remplissage Download PDF

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Publication number
WO2008039627A2
WO2008039627A2 PCT/US2007/077148 US2007077148W WO2008039627A2 WO 2008039627 A2 WO2008039627 A2 WO 2008039627A2 US 2007077148 W US2007077148 W US 2007077148W WO 2008039627 A2 WO2008039627 A2 WO 2008039627A2
Authority
WO
WIPO (PCT)
Prior art keywords
outer tube
container
return passage
tube
nozzle system
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2007/077148
Other languages
English (en)
Other versions
WO2008039627A3 (fr
Inventor
Robert Dematteis
Donald Carroll
Donald Pansier
James Scott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2008039627A2 publication Critical patent/WO2008039627A2/fr
Publication of WO2008039627A3 publication Critical patent/WO2008039627A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/28—Controlling escape of air or dust from containers or receptacles during filling

Definitions

  • This invention relates to filling systems for plastic valve bags and other types of containers typically used for filling flowable materials such as concrete products, pet foods, foodstuffs and other bulk products. It may also be used for other types of products that may not be considered flowable such as any number of hard and soft goods like briquettes, medical devices, and so on. More specifically, this invention relates to filling these plastic bags and containers in a unique method that provides a dust-control filling environment and may speed up the filling process.
  • paper valve bags cost more than standard, top-loading plastic bags but the paper valve bags are faster to fill thus they substantially improve productivity and output.
  • plastic valve bags made from a woven polypropylene especially in Europe — with similar productivity.
  • the polypropylene valve bags cost 20% to 30% more than paper.
  • plastic valve bag is that cited in my pending patent application US20040184680, which costs less than both the paper and polypropylene valve bags and have many advantages over the two.
  • Various forms of containers may include commonly used cardboard cartons, rigid plastic containers and even forms of bottles, buckets and so on.
  • One significant problem associated with the filling of flowable contents with the aforementioned bag and container types and the aforementioned systems is the amount of dust that is generated during the filling process. In any top loading system fugitive dust tends to drift upwards, then float away and settle nearby.
  • valve bag filling system used today is that of placing a valve bag on a nozzle whereas the valve is in a horizontal disposition as illustrated in US Patent 4,589,454, which uses a conventional valve bag such as that of US Patent 4,759,641.
  • fugitive dust escapes from the bag and filling system in three ways. First, during the fill process, it escapes from vent holes in the bags. Since current filling methods use injected air or are air assisted, they require bags to have vent holes in order to allow the injected air to escape. The injected air (which may also be referred to as trapped air in the case of a gravity feed system) contains the fugitive dust.
  • fugitive dust leaks out of prior art paper and polypropylene valve bags and stitched bags after they are filled. During the palletizing process and through subsequent handling, dust continues to escape from the leaky valves, vent holes, and through the porous paper material. All told, bag packing facilities using existing bag filling technologies are notoriously dusty environments. This stray dust is also a problem for distributors and retailers, as may be seen at any home improvement center selling concrete products. Perhaps what is of most concern with the fugitive dust associated with materials such as concrete is its toxicity. The dust associated with concrete products contains lime and federal law requires companies to print warning labels on bags. Other toxins in other forms of flowable filling applications may include herbicides, fungicides, carbon black, drug-related chemicals and so on.
  • a filling system that can reduce or eliminate the fugitive dust during the filling process would be desirable. Furthermore, if the system also had a means to control the air and its fugitive dust after it was filled, it too would be highly desirable. Ideally, the system would not have a negative effect on productivity. Such a system may also eliminate the need for vent holes in bags and allow the use of the more desirable valve bag as described in the US '680 application. It would also allow for the use of rigid containers that would be constructed with similar air tight qualities.
  • the dust control problems associated with prior art are substantially reduced and may be eliminated with the present invention.
  • the solution to dust control is through containment.
  • the filling system of the present invention accomplishes that by using a method to mount a valve bag onto a fill nozzle that has a second internal chamber suitable to neutralize any air that may be injected during the fill process. It may also be accomplished by inserting the nozzle into a bag or container.
  • the neutralized air with its inherent dust content may be extracted and disposed of as desired.
  • the result of such a system may eliminate the requirement for vent holes and may also eliminate the "puff of dust" that is emitted from the nozzle after filling.
  • a fill nozzle that allows a valve bag or other form of aperture to firmly affix itself.
  • the fill nozzle also uses a narrowed tip to allow for easier mounting of a bag valve or insertion of the nozzle.
  • an air control system that in combination with the other attributes to be revealed, creates not only a dust free filling environment, but uses both negative and positive air to control the resident air and its inherent fugitive dust, and direct it elsewhere for future use.
  • the objectives of the present invention include: 1) a method of preventing fugitive dust from escaping into the work environment during the bag or container filling process; 2) a method of handling resident air that contains potential fugitive dust that is inherent to filling a bag or container with flowable contents; 3) a method of capturing the fugitive dust contained in the resident air; 4) a method of storing the fugitive dust for later use and applications; 5) a method of using air control to maintain a valve bag in position while being filled on a nozzle; 6) a method of releasing the valve bag after it has been filled; 7) a nozzle that helps prevents fugitive air from escaping; 8) a nozzle and system that provides for escape and/or control of resident air and fugitive dust; 9) a nozzle with replaceable inner feed tubes; 10) a nozzle with replaceable outer sleeves; 11) a method of controlling the displacement of air that may otherwise be captured inside a bag or container; 12) a method to recapture the dust
  • Fig. 1 is a perspective view of a fill nozzle and system of the present invention.
  • Fig. 2 is a perspective view of a valve bag as described in my pending US '680 application.
  • Fig. 3 is a perspective view of the bag in Fig. 2 mounted on the fill nozzle and system of Fig. 1 whereby positive and negative air is being used to control air, dust, retention and release of the bag.
  • Fig. 4 is a perspective view of a valve bag being released from the present invention.
  • Fig. 1 is a perspective view of a fill nozzle and system of the present invention.
  • Fig. 2 is a perspective view of a valve bag as described in my pending US '680 application.
  • Fig. 3 is a perspective view of the bag in Fig. 2 mounted on the fill nozzle and system of Fig. 1 whereby positive and negative air is being used to control air, dust, retention and release of the bag.
  • Fig. 4 is a perspective view of a valve bag being released from
  • FIG. 5 is a perspective view of a nozzle of the present invention being used to fill a rigid container.
  • Fig. 6 is a vertical cross-sectional view of the nozzle of the present invention cut in half and illustrating the replaceable outer sleeve and replaceable inner feed tube.
  • fill system 10 consists of fill nozzle 12, which has an internal hollow feed tube 14 where a flowable material (not shown) may enter at rear entry point 16 and be fed into the bag or container out of the forward most point 18 as illustrated in Fig. 3.
  • Nozzle 12 has an outer sleeve 20 with its forward most point 22 being a generally pointed tip and is smaller than rear portion 24, thereby forward most point 22 is suitable for insertion into a valve or container (or having a bag or container mounted thereon).
  • air space 26 Between hollow feed tube 14 and outer sleeve 20 is air space 26 whereas air flow will be utilized to control various aspects of the present invention, to be described later.
  • sleeve 20 in a generally forward location that would be placed inside a bag or its valve (once the nozzle is inserted as in Fig. 3) or inside the fill aperture of a container (Fig. 5) are communication apertures 28a, 28b, 28c and 28d (not shown) allowing for air flow between air space 26 and the inside of the bag or container or at times vacuum suction against a wall of film.
  • Air space 26 flows into manifold 30, which is located rearward and has an exit port 32. Downstream from exit port 32 in pipe assembly 33 is valve 34 where positive air P may enter and a second valve 36 where negative air N may exit as illustrated by the corresponding arrows indicating the directional flow).
  • the feed tube 14 on this type of nozzle would typically be anywhere from 1" - 3.5" ID depending on whether it is filling a small quantity of finer granules or bulkier items such as charcoal briquettes or even larger, bulkier items.
  • the outer sleeve 20 would be a suitable dimension larger than inner feed tube 14 sufficient to create air space 26.
  • the intention of the present invention is not to restrict the size or type of contents being filled, but to control the air flow and resident dust.
  • Air space 26 may also be suitable for use of controlling other forms of gases in addition to air containing dust, for example gases used in food processing or other applications using gas for preservation or moisture control purposes, but not limited to these.
  • Fill nozzles, sleeves and feed tubes are usually made of steal, but may be made of other types of material such as plastic or aluminum that can be formed into the desired tubular shape, round or otherwise.
  • the outer sleeve and the inner fill tube may be made so that they are easily replaceable in any number of existing methodologies, such as being secured by screws, using a keyed twist and turn locking means, affixing them in place with a collar, and so on.
  • the fill nozzle is tapered or which portion may be tapered, only that it is preferable to have it tapered along a front, mid or rear portion in order to effect a snug fit.
  • the tapered nozzle provides a simple method to achieve an air tight seal between the fill system and the valve or container being filled, however, this may also be accomplished with a non-tapered fill nozzle system and with a valve that is tapered instead. Likewise, both the nozzle and the valve may be tapered to improve the air tight seal.
  • the outer sleeve and inner feed tube be two separate components, they may be manufactured or assembled to be one and the same, with a built-in air space that communicates with the rest of the system. In such a system, it would function substantially the same as described herein.
  • valve bag 40 has a top 42, a bottom 44, left and right side gussets 46 and 46' respectively, with left and right side center gusset creases 48 and 48' respectively. Both bag top 42 and bottom 44 are sealed. Extending inwards from left side center gusset crease 48 are internal flaps 50 and 52 (not shown as it lies directly underneath internal flaps 50). Internal lap sealed portion 54 (shaded line) is a narrow sealed strip that lies adjacent left side center gusset crease 48 and runs continuously from bag bottom 44 upward then turns inward at point 56 and stopping at point 57.
  • Valve opening 58 is the unsealed portion that lies along left side center gusset crease 48 in between point 56 and bag top 42, and is suitable to allow entry of the fill nozzle described in Fig. 1.
  • internal flap portions 50 and 52 extend inward, inside bag 40 about 2" to 3" from center gusset crease 48, depending upon bag size, but could certainly be more or less.
  • Seal portion 60 begins at point 56 and runs approximately horizontal, but may taper upward slightly upward into internal flap portions 50 and 52.
  • the area between horizontal seal 60 and sealed bag top 42 forms a tapered valve sleeve 62, which sleeve along with valve opening 58 will fit snugly about a nozzle such as that of sleeve 20 of fill nozzle 12 in Fig. 1.
  • a tapered valve as described herein works best in combination with the tapered fill nozzle of Fig. 1, as it will seat itself along the entire valve surface to the tapered nozzle surface however, it is not absolutely essential.
  • This is one form of bag that may be used on the fill system of the present invention albeit there are other types of prior art valve bags suitable for use on the system as well.
  • Fig, 3 the system described in Fig. 1 is in operation. The nozzle 12 has been inserted into bag valve opening 58 of bag 40 and seating valve sleeve 56 firmly against and around nozzle sleeve 20.
  • Flowable material F (the many pellets illustrated) was processed through feed tube 14 as it entered feed tube 14 at rear entry point 16 and exited at forward most point 18, thereby being delivered into bag 40.
  • This process may come from any number of methods, for example a auger feed, gravity feed, air assisted and so on. It is noted that bag 40 is being retained firmly in position on nozzle 12 by the a vacuum created at communication apertures 28a and 28b, a result of the negative air flow inside air space 26 and throughout the system of the present invention. This negative air flow was created by the use of positive air entering valve 34 and exiting from valve 36 as previously described.
  • additional resident air accompanies the flowable contents filling the bag either by being an inherent part of the contents thereof or being a part of an air-assist or air-injection filling process.
  • This resident air enters at point 16 of feed tube 14 and exits into the bag at point 18.
  • the excess resident air that accompanies the flowable contents or is being injected along with it is being neutralized by the negative air system as it enters communication apertures 28c and 28d (not shown), then moves rearward through air space 26 into manifold 30 and last, exits out exit port 32 and past valve 36.
  • bag 40 does not balloon up, nor are any vent holes in the bag required to allow the excess resident air to escape.
  • the amount of negative air pressure in the system of present invention is directly related to the amount of excess resident air in the contents being filled or being injected.
  • the filling process may be relatively air tight with excess resident air and its inherent dust being transferred out of exit port 32, through tube 37 and subsequently contained or recycled.
  • This containment may be in the form of a bag house, fill hopper, silo and so on. It may also be fed directly back into the fill system itself.
  • the present invention is communicating with a means (not shown) of releasing or dispensing the filled bag from the nozzle by providing temporary stoppage of the negative air flow, thereby ceasing the vacuum at communication apertures 28a and 28b, which allows bag 40 to slide off, or removed from, nozzle 72.
  • a means not shown
  • nozzle 72 is tilted downward at a 15 degree angle as illustrated and upon cessation of the negative air flow, gravity causes bag 40 to simply slide off.
  • valve sleeve 56 of bag 40 flattens out, thus closing off the valve opening.
  • the release process may be effectuated by manual removal from a horizontally mounted nozzle or by a mechanical tilting downward of a horizontally mounted nozzle. Even if the nozzle were to be inserted into a valve bag directly downward, cessation of the negative air and releasing a valve from a nozzle may be accomplished in much the same manner. Regardless of the methodology used, regardless of the angle, or lack of angle of a fill nozzle, the effect is substantially the same.
  • the stoppage of negative air may be effected by an number of means such as mechanical, computer, microcontroller methodologies and so on.
  • rigid container 60 has four sides 62a, 62b, 62c (not shown) and 62d (not shown), a top 64, a bottom 66 (not shown) and a receiving aperture 68.
  • Nozzle 82 is shown inserted into receiving aperture 68 whereas the filling process is much like that of the preceding bags. Upon filling the container with its contents, nozzle 82 will be extracted, receiving aperture 68 will close, much like that in the preceding bag, and container 60 will be further processed for shipping.
  • outer sleeve 100 is attached by screws 140 and 140' to manifold 130 at flange 138, thus making outer sleeve 100 replaceable.
  • Inner feed tube 94 is also made replaceable by a key-lock method inserting groove 142 into locking pin 144 and twisting clockwise until secured in place. The method of securing a replaceable outer sleeve or inner feed tube to the system may be accomplished in any number of ways and the present invention is not intended to be restricted to only those shown herein. Likewise, the out sleeve and inner feed tube may be one and the same and together they may be replaceable as well.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)

Abstract

L'invention concerne un système de remplissage destiné au remplissage de sacs en plastique et de réceptacles de façon accélérée et relativement exempte de poussière. Le système de remplissage comprend un tube coaxial comportant un passage d'alimentation destiné à la distribution d'un matériel et un passage de retour destiné à l'extraction de la poussière du réceptacle durant l'étape de remplissage. Le tube coaxial comprend au moins une ouverture ménagée dans la paroi latérale, qui s'étend dans le passage de retour et produit une force d'aspiration contre une paroi d'une pellicule entourant le tube coaxial durant l'étape de remplissage d'un réceptacle.
PCT/US2007/077148 2006-09-22 2007-08-29 Système de remplissage Ceased WO2008039627A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/534,435 2006-09-22
US11/534,435 US20070289662A1 (en) 2005-09-22 2006-09-22 Filling system

Publications (2)

Publication Number Publication Date
WO2008039627A2 true WO2008039627A2 (fr) 2008-04-03
WO2008039627A3 WO2008039627A3 (fr) 2008-07-10

Family

ID=39230855

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/077148 Ceased WO2008039627A2 (fr) 2006-09-22 2007-08-29 Système de remplissage

Country Status (2)

Country Link
US (1) US20070289662A1 (fr)
WO (1) WO2008039627A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060225795A1 (en) * 2005-03-30 2006-10-12 Baker George D Push button regulator device with sealing element to facilitate easy connection with other devices
DE102008051023A1 (de) * 2008-06-06 2009-12-17 Haver & Boecker Ohg Packmaschine
DE102008050729A1 (de) * 2008-10-11 2010-04-15 Haver & Boecker Ohg Packmaschine und Verfahren zum Füllen von Schüttgütern in Säcke
JP6033740B2 (ja) * 2012-07-04 2016-11-30 西川ゴム工業株式会社 粉粒体投入装置
US11548185B2 (en) 2020-09-09 2023-01-10 Luis Moreno Dustless mixing system

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US1325991A (en) * 1919-12-23 Bottle-filling device
US3578041A (en) * 1968-09-23 1971-05-11 Nippon Jido Fukurozumeki Mfg C Automatic apparatus for packaging powdered material with uniform bag weight and with dust-free operation
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US4524459A (en) * 1981-09-14 1985-06-18 Basic Packaging Systems, Inc. Square ended bag
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Also Published As

Publication number Publication date
US20070289662A1 (en) 2007-12-20
WO2008039627A3 (fr) 2008-07-10

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