WO1991014632A2 - Sac auto-desaerant et procede pour son remplissage - Google Patents

Sac auto-desaerant et procede pour son remplissage Download PDF

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Publication number
WO1991014632A2
WO1991014632A2 PCT/DE1991/000233 DE9100233W WO9114632A2 WO 1991014632 A2 WO1991014632 A2 WO 1991014632A2 DE 9100233 W DE9100233 W DE 9100233W WO 9114632 A2 WO9114632 A2 WO 9114632A2
Authority
WO
WIPO (PCT)
Prior art keywords
sack
self
venting
filling
air
Prior art date
Application number
PCT/DE1991/000233
Other languages
German (de)
English (en)
Other versions
WO1991014632A3 (fr
Inventor
Felix Rettenmaier
Original Assignee
Celcommerz High-Chem.-Produkte Gmbh & Co. Kg
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 Celcommerz High-Chem.-Produkte Gmbh & Co. Kg filed Critical Celcommerz High-Chem.-Produkte Gmbh & Co. Kg
Publication of WO1991014632A2 publication Critical patent/WO1991014632A2/fr
Publication of WO1991014632A3 publication Critical patent/WO1991014632A3/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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/01—Ventilation or drainage of bags
    • 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
    • B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B1/16—Methods of, or means for, filling the material into the containers or receptacles by pneumatic means, e.g. by suction
    • 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
    • B65B1/20—Reducing volume of filled material
    • B65B1/22—Reducing volume of filled material by vibration
    • 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
    • B65B1/20—Reducing volume of filled material
    • B65B1/24—Reducing volume of filled material by mechanical compression
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D29/00—Sacks or like containers made of fabrics; Flexible containers of open-work, e.g. net-like construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]

Definitions

  • the invention relates to a self-ventilating sack for filling with finely divided material such as powders, grains, flakes, fibers, in particular with fillings of low weight.
  • the packaging of granular, powdered or fibrous mate ⁇ rials is mechanized in recent years increasingly and been automated, in particular with the aim of labor and time saving and Abpackungsauto- maten use.
  • This mechanization and automation places a whole series of requirements on the bag-shaped or bag-shaped packaging means used, some of which are incompatible with one another.
  • rfnis for a self ⁇ vented bag that does not have these disadvantages, allows a time- and space-saving filling of the bag and it allows to use the given by the bag shape room full .auszu ⁇ save transport and safe and stacked to save space.
  • the sack must of course have sufficient strength to withstand the filling pressure during automatic filling and to be able to cope with the load caused by the filling material. Since this problem is particularly severe in the case of valve bags, since short cycle times are sought when they are filled, the invention is explained in more detail below using the example of a valve bag, but without being limited to this specific example.
  • the self-venting sack is also important when filling sacks by other means, for example from open sacks via screw conveyors or even when shoveling in the filling material, and is advantageous " .
  • a self-venting sack which consists entirely or partially of air- and gas-permeable nonwoven fabric, the air and gas permeability of which is so great that it becomes congested during filling Air or gases can escape through the nonwoven.
  • the nonwoven fabric has a bag for bagged cement of very high specifi ⁇ rule weight and a ver by the foregoing grinding ⁇ tively high temperature higher strength values greater thickness and higher basis weight than a bag for filling with down or silica gel.
  • Vliesstof ⁇ used fes in mutual dependence such as air permeability, weight per unit area ", thickness of the nonwoven fabric, size whose pores * and the number of pores, the nature of the nonwoven used, and the binding of the fibers or the type fleece bonding, so that only wide ranges can be specified for these values, within which a selection must be made for the special purpose.
  • Air permeability below 100 1 / m / s also builds up in this . extremely suitable material, too high a pressure and the sack may be damaged. If the air permeability is higher than 3000 1 / m / s, the nonwoven is either too thin or has too large pores or both and then no longer adequately protects the filling material from external influences and allows finely divided ingredients to escape, ie lead for dusting and no longer has the required strength.
  • the thickness of the nonwoven fabric is also in an interrelation and dependency relationship with the other sizes. It is expediently in the range from 0.1 to 1.5 mm, preferably from 0.2 to 1 mm.
  • a relatively thin fleece must have high strength values in order to withstand the stresses during filling and when handling and storing the filled sack. •; . .
  • Another influencing factor is the size and frequency of the pores in the nonwoven fabric. Ultimately, these pores determine the degree of air permeability and thus the suitability for rapid self-ventilation. Above all, their size has a decisive influence on the tightness of the bag and the prevention of dusting when filling and when handling the filled bag later. Above all, the maximum pore size is a limiting factor here, which should preferably not be above 150 ⁇ m for most of the filling goods mentioned at the beginning.
  • the pore size also shows the dependency on other data of the nonwoven, and it is obvious that a thin nonwoven with relatively large pores tends to dust more easily than a thicker nonwoven with the same size pores or a larger number of medium and smaller pores, because at a thicker nonwoven fabric, the probability that a small particle of the filling material is filtered out and thus prevented from escaping is multiplied.
  • nonwoven is to be interpreted broadly and encompasses all materials that contain exclusively or to a considerable extent textile fibers with a length between 3 mm and 50 mm, are stored in a random position by a dry or wet process and are consolidated in various ways, for example. mechanically by needles or chemically by binders and / or thermally by heat treatment.
  • non woven fabric has become common.
  • spun-bonded materials in which synthetic materials such as polyester during the manufacturing process from the melt, i.e.
  • nonwovens when the threads or fibers emerge from a nozzle, are deposited in different directions and solidified to form a sheet material while still plastic.
  • the delimitation of the nonwovens is that paper consists of short fibers based on cellulose or wood pulp with fiber lengths up to 2 mm.
  • the term nonwoven or non-woven also includes products which, in addition to textile fibers, contain a considerable proportion of cellulose or wood pulp, which are the material basis of paper manufacture. Such an admixture not only reduces the cost of a nonwoven, but the shorter cellulose and wood fibers also act as a kind of binding fiber for the longer textile fibers that make up the essence of the nonwoven.
  • the material basis for the textile fibers or threads contained in the nonwoven is also extremely wide and ranges from natural fibers such as cotton to cellulose, ie to Fiber converted cellulose, to synthetic materials based on polyester, polyamide, polypropylene and ganischen to anor ⁇ materials such as rock wool and glass fibers.
  • Which nonwoven fabric is selected for the self-venting sack depends entirely on the goods to be filled, the packaging process and the devices used. However, it is precisely the large number of nonwoven fabric types and qualities on the market that, in addition to the easy and quick ventilation which is in the foreground, make the nonwoven fabrics extremely suitable as a material for a self-venting sack. A tailor-made nonwoven material is available for almost every need.
  • the wall of the self-venting sack does not necessarily have to consist entirely of nonwoven material, and it may be expedient to manufacture parts thereof, such as the filling or bottom area, from other materials for certain filling goods or stresses the wall of the sack, however, is at least half made of non-woven fabric in order to achieve the effect of rapid ventilation.
  • the very decisive advantage of the self-venting sack lies in the fact that it enables rapid venting, particularly in automatic filling systems, shorter cycle times and a higher degree of filling are possible. It is therefore preferably suitable as a valve sack.
  • a preferred method for filling such a nonwoven sack is therefore that the filling is carried out with a delivery pressure of 0.8 to 1.0 bar and the sack can thus be filled faster and more densely.
  • the refilling of the sack and a preferred process variant consists in shaking and / or tapping the sack after the first filling and refilling considerable amounts of filling material after this compression step, so that ultimately a full, the sack volume is fully filled results in a useful sack or, with the same filling weight as before, the sack can be kept smaller in its dimensions.
  • the self-venting sack according to the invention is also less problematic with regard to disposal and in relation to the environment.
  • the valve bags made of paper which have been customary up to now, usually consist of two paper and one plastic intermediate layer and cannot be reprocessed as a result, but must either be incinerated or disposed of in landfills and in this way pollute the environment.
  • the sack according to the invention since in its preferred embodiment it consists exclusively of non-woven material, can be broken down into the fibers, which can be processed into non-woven material for the same or another purpose.
  • the 'non-woven bag allows a further particularly vorteil ⁇ embodiment of the invention in that it at the opposite end of the filling opening an N- expediently extend over the entire bag width extending fastener having the double function a. to enable easy emptying of the sack without having to cut away the actual closure, such as the valve area of the valve sack,
  • the good air permeability of the nonwoven facilitates the emptying of the filled sack, because no vacuum builds up as would occur with a conventional, needled foil sack.
  • the Vliesst ⁇ ff sack is very well suited for sewing in such a fastener, preferably a fastener tape, and there is no risk of tearing or bursting.
  • the additional closure which enables frequent reuse, can be a zipper known from packaging bags.
  • a Velcro fastener is particularly preferred for its simple operation.
  • the application is expediently already carried out during the manufacture of the self-venting sack.
  • FIGS. I to IV ⁇ 3 The individual steps in the formation of a reusable sack provided with a Velcro fastener are shown in FIGS. I to IV ⁇ 3.
  • the sack 1 made of nonwoven has a filling opening 2.
  • this fill opening 2 would be closed by a valve closure with a lateral insertion opening for a filler neck.
  • the end of the bag 1 opposite the filling opening 2 has the tabs 3, 4 and 5, which are bent at right angles and glued or sewn together to give the bottom of the self-venting bag 1.
  • Polypropylene thermal 70 0.5 1470 12.2 18.3 powder (TAT 2547) 150 / u
  • Polyester needled 150 1.0 900 grain meal 11.5 19.5 (TAT 25/47) 150 ⁇ m
  • Polyester spunbond 70 0.33 2800 cellulose powder. 11.4 16.5 (RK 70) thermal 75 / im

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

Le sac auto-désaérant destiné à être rempli avec de fines matières de remplissage se compose entièrement ou partiellement d'une étoffe nappée perméable à l'air et aux gaz et dont la perméabilité à l'air et aux gaz est si grande que l'air ou les gaz s'accumulant lors du remplissage puissent s'échapper à travers l'étoffe nappée.
PCT/DE1991/000233 1990-03-23 1991-03-19 Sac auto-desaerant et procede pour son remplissage WO1991014632A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4009369A DE4009369A1 (de) 1990-03-23 1990-03-23 Sackfoermiges verpackungsmittel
DEP4009369.7 1990-03-23

Publications (2)

Publication Number Publication Date
WO1991014632A2 true WO1991014632A2 (fr) 1991-10-03
WO1991014632A3 WO1991014632A3 (fr) 1991-12-26

Family

ID=6402905

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1991/000233 WO1991014632A2 (fr) 1990-03-23 1991-03-19 Sac auto-desaerant et procede pour son remplissage

Country Status (6)

Country Link
EP (1) EP0473753A1 (fr)
JP (1) JPH05500493A (fr)
KR (1) KR910016569A (fr)
AU (1) AU7495091A (fr)
DE (1) DE4009369A1 (fr)
WO (1) WO1991014632A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998046498A1 (fr) * 1997-04-14 1998-10-22 Sealed Air Corporation Mousse permeable au gaz dans un systeme de conditionnement constitue d'un sac
US6199602B1 (en) 1998-08-27 2001-03-13 Wacker-Chemie Gmbh Large drums for high-dispersion, high air content solids, and a method for filling them
CN102700829A (zh) * 2012-06-05 2012-10-03 任铁军 粉料包装方法
CN109625392A (zh) * 2018-12-29 2019-04-16 成都三可实业有限公司 一种吸空袋箱

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4232112A1 (de) * 1992-09-25 1994-03-31 Celcommerz High Chem Produkte Verfahren und Vorrichtung zum Zugeben von Füll- und Verstärkungsstoffen zu hochviskosem Material

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1693266A (en) * 1927-11-01 1928-11-27 Baldwin Rosecrans Seed bag
GB1020719A (en) * 1963-11-22 1966-02-23 Frits Buise Container for granular material
GB1091006A (en) * 1965-08-20 1967-11-15 Allen Transmatic Ltd Improvements relating to the filling of containers with powder
FR1559190A (fr) * 1968-02-27 1969-03-07
US3445055A (en) * 1966-04-28 1969-05-20 Parker Pace Corp Reinforced laminated plastic materials
US3526078A (en) * 1969-04-28 1970-09-01 Ppg Industries Inc Package compacting device
DE2317002A1 (de) * 1973-04-05 1974-10-17 Hettmannsperger & Loechner Beutel aus luftdurchlaessigem material
US3995408A (en) * 1975-09-30 1976-12-07 Basf Aktiengesellschaft Process and apparatus for filling foldable or rigid packages
GB2018721A (en) * 1978-04-14 1979-10-24 Wavin Bv A plastics bag with a filling valve
DE3222146A1 (de) * 1981-07-09 1983-01-27 Veb Kombinat Technische Textilien Karl-Marx-Stadt, Ddr 9010 Karl-Marx-Stadt Textiler verpackungsstoff, insbesondere zur verwendung fuer hochbelastbare saecke
DE3329292A1 (de) * 1983-08-12 1985-02-28 Pfanni-Werke Otto Eckart KG, 8000 München Verpackungshuelle
EP0136859A2 (fr) * 1983-10-06 1985-04-10 C-I-L Inc. Sac en matière thermoplastique
EP0148360A2 (fr) * 1984-01-07 1985-07-17 Degussa Aktiengesellschaft Procédé pour compacter et/ou remplir des matières pulvérulentes
DE3511840A1 (de) * 1985-03-30 1986-10-09 Hahn Verfahrenstechnik GmbH, 6053 Obertshausen Behaelterwaage
US4630312A (en) * 1981-02-20 1986-12-16 Milstein Elisabeth M L Laundry bag for nylon hosiery and the like
US4691371A (en) * 1985-12-26 1987-09-01 Super Sack Manufacturing Corporation Receptacle having improved discharge spout

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7906765U1 (de) * 1979-03-10 1979-07-05 Haufe Ludwig Schaedlingsbekaempfungsmittel-Beutel
DE3325826A1 (de) * 1983-07-18 1985-01-31 Dr. Werner Freyberg Chemische Fabrik Delitia Nachf., 6941 Laudenbach Beutel zur aufnahme ausgasungsfaehiger schaedlingsbekaempfungsmittel
DE3447277A1 (de) * 1984-12-22 1986-06-26 Nordenia Kunststoffe Peter Mager KG, 2841 Steinfeld Selbstentlueftender sack aus kunststoffolie
DD299237A7 (de) * 1986-10-30 1992-04-09 Heidenau Netz & Seil Veb Kettengewirktes gitterartiges verpackungsmaterial, insbesondere fuer saecke
DE3736859A1 (de) * 1987-10-30 1989-05-18 Kielbassa Herbert Dr Ing Gewebter grosssack fuer schuettgueter

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1693266A (en) * 1927-11-01 1928-11-27 Baldwin Rosecrans Seed bag
GB1020719A (en) * 1963-11-22 1966-02-23 Frits Buise Container for granular material
GB1091006A (en) * 1965-08-20 1967-11-15 Allen Transmatic Ltd Improvements relating to the filling of containers with powder
US3445055A (en) * 1966-04-28 1969-05-20 Parker Pace Corp Reinforced laminated plastic materials
FR1559190A (fr) * 1968-02-27 1969-03-07
US3526078A (en) * 1969-04-28 1970-09-01 Ppg Industries Inc Package compacting device
DE2317002A1 (de) * 1973-04-05 1974-10-17 Hettmannsperger & Loechner Beutel aus luftdurchlaessigem material
US3995408A (en) * 1975-09-30 1976-12-07 Basf Aktiengesellschaft Process and apparatus for filling foldable or rigid packages
GB2018721A (en) * 1978-04-14 1979-10-24 Wavin Bv A plastics bag with a filling valve
US4630312A (en) * 1981-02-20 1986-12-16 Milstein Elisabeth M L Laundry bag for nylon hosiery and the like
DE3222146A1 (de) * 1981-07-09 1983-01-27 Veb Kombinat Technische Textilien Karl-Marx-Stadt, Ddr 9010 Karl-Marx-Stadt Textiler verpackungsstoff, insbesondere zur verwendung fuer hochbelastbare saecke
DE3329292A1 (de) * 1983-08-12 1985-02-28 Pfanni-Werke Otto Eckart KG, 8000 München Verpackungshuelle
EP0136859A2 (fr) * 1983-10-06 1985-04-10 C-I-L Inc. Sac en matière thermoplastique
EP0148360A2 (fr) * 1984-01-07 1985-07-17 Degussa Aktiengesellschaft Procédé pour compacter et/ou remplir des matières pulvérulentes
DE3511840A1 (de) * 1985-03-30 1986-10-09 Hahn Verfahrenstechnik GmbH, 6053 Obertshausen Behaelterwaage
US4691371A (en) * 1985-12-26 1987-09-01 Super Sack Manufacturing Corporation Receptacle having improved discharge spout

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998046498A1 (fr) * 1997-04-14 1998-10-22 Sealed Air Corporation Mousse permeable au gaz dans un systeme de conditionnement constitue d'un sac
US6199602B1 (en) 1998-08-27 2001-03-13 Wacker-Chemie Gmbh Large drums for high-dispersion, high air content solids, and a method for filling them
CN102700829A (zh) * 2012-06-05 2012-10-03 任铁军 粉料包装方法
CN109625392A (zh) * 2018-12-29 2019-04-16 成都三可实业有限公司 一种吸空袋箱
CN109625392B (zh) * 2018-12-29 2024-02-27 成都三可实业有限公司 一种吸空袋箱

Also Published As

Publication number Publication date
DE4009369A1 (de) 1991-09-26
KR910016569A (ko) 1991-11-05
WO1991014632A3 (fr) 1991-12-26
EP0473753A1 (fr) 1992-03-11
JPH05500493A (ja) 1993-02-04
AU7495091A (en) 1991-10-21

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