WO1988003892A1 - A device for compressing a compressible material - Google Patents

A device for compressing a compressible material Download PDF

Info

Publication number
WO1988003892A1
WO1988003892A1 PCT/SE1986/000533 SE8600533W WO8803892A1 WO 1988003892 A1 WO1988003892 A1 WO 1988003892A1 SE 8600533 W SE8600533 W SE 8600533W WO 8803892 A1 WO8803892 A1 WO 8803892A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
bag
air
impermeable
region
Prior art date
Application number
PCT/SE1986/000533
Other languages
French (fr)
Inventor
Dan Nilsson
Original Assignee
Edifo Industrikonsult Ab
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 Edifo Industrikonsult Ab filed Critical Edifo Industrikonsult Ab
Publication of WO1988003892A1 publication Critical patent/WO1988003892A1/en

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
    • B65B1/20—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
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/24—Boxes or like containers with side walls of substantial depth for enclosing contents with moulded compartments or partitions
    • 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
    • B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
    • B65B63/02—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles
    • B65B63/028—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles by pneumatic means

Definitions

  • a DEVICE FOR COMPRESSING A COMPRESSIBLE MATERIAL This invention relates to a device for compressing a compressible material packed in an air-impermeable casing, for example a plastic sack.
  • an air-impermeable casing for example a plastic sack.
  • Examples of such materials are asbestos fibres, mineral wool, household refuse.
  • the device of the invention can also be used for compressing compressible material that has no tendency to be air-carried.
  • Fig. 1 shows a device according to the invention before compression has started
  • Fig. 2 shows the device according to Fig. 1 after compression has been carried out.
  • the device of the invention shown in Figs. 1 and 2 comprises an outer container 1, preferably in the form a barrel having a side wall 2 and a bottom 3.
  • a perforated plate 4 which extends in principle along the whole side wall 2 of the container 1 is placed in the con tainer 1.
  • the perforated plate 4 is at a substantially constant distance from the side wall 2.
  • a compression bag 5 is placed inside the perforated plate 4, said bag being anchored in the region of its upper edge to the upper edge of the container 1 by means of a ring 6 which clamps the upper portion of the compression bag 5 against the upper edge of the container 1 in suitable manner.
  • a plate 7 is placed which is fixed to the bottom of the container 1 by the aid of a suitable fastening means.
  • a portion of the bottom of the compression bag 5 is located between the plate 7 and the bottom 3 of the container 1 meaning that the bag 5 is anchored to the bottom of the container 1.
  • An opening 8 for supply and discharge of air is made in the side wall 2.
  • the device described schematically above functions in the following way.
  • Said suction of air can for instance be carried out by means of a pump or the like.
  • the compression bag 5 will then be sucked to the inside of the perforated plate 4.
  • a sack 10 the contents of which are to be compressed, is now placed in the container 1 within the compression bag 5.
  • Air is supplied to the opening 8 in the direction of the arrow 11, see Fig. 2.
  • the space between the side walls 2 and the bottom 3 of the container 1 and the compression bag 5, respectively, will then be filled with air meaning that certain portions of the compression bag 5 will abut the sack 10 and compress this, see Fig. 2, in an increasing degree the more air is pumped through the opening 8 in the direction of the arrow 11.
  • the sack 10 is compressed air is pressed out of this, and it can for instance assume a form according to Fig. 2.
  • the sack 10 When a desired compression degree (for example 50%) has been reached the sack 10 is sealed at its open end. In this way the sack 10 will maintain its compressed form even when the compression bag 5 is drawn back by air being sucked out through the opening 8.
  • a desired compression degree for example 50%
  • the function of the plate 7 is to prevent the bag 5 from going off upwards from the container, the consequence of which of course would be, also, that the sack 10 was displaced upwards.
  • the sack 10 compressed in the way indicated above is thereafter removed from the container 1 when the compression bag 5 has returned to the position according to Fig. 1.
  • the container may for instance be compressed along its periphery so that channels for the air are formed.
  • the container 1 is preferably made of a stiff, self-sup porting material, for example sheet.
  • the container may also consist of a softer material that is stiffened in a required way, for example by means of an reinforcement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Packages (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

Device for compressing a compressible material packed in an air-impermeable casing, for example a plastic sack. It is the primary object of the invention to compress such a material as has a tendency to be air-carried, for example asbestos fibres. What characterizes the device of the invention is that it comprises an outer container (1), a bag (5) of air-impermeable material placed within the container (1), said bag (5) being anchored at its bottom to the container (1) which has an opening (8) for supply and discharge of air in the space between the container (1) and the bag (5). Moreover, a perforated plate (4) ensuring air passage between the container (1) and the bag (5) is arranged in the container (1).

Description

A DEVICE FOR COMPRESSING A COMPRESSIBLE MATERIAL This invention relates to a device for compressing a compressible material packed in an air-impermeable casing, for example a plastic sack. When packing materials or goods that are porous, i.e. contain large quantities of air, it is extraordinarily desirable to be able to compress these materials or goods so that the volume taken by them is reduced to an essential degree.
Examples of such materials are asbestos fibres, mineral wool, household refuse.
The reduction of volume known in connection with packing porous materials is either accomplished by creating a negative pressure within the package by sucking out air or through a quite mechanical compression of the material or goods. In case of finely divided materials of type asbestos fibres compression cannot be obtained by sucking air from the package as the material would itself accompany the air stream. In order to prevent this filters or the like must in that case be arranged in the air stream which, however, can be easily clogged by fibres.
It is the object of this invention to provide a device of the type mentioned above which enables compression of the compressible material without the material tending to leave the package. Of course the device of the invention can also be used for compressing compressible material that has no tendency to be air-carried.
This object of the invention is realized by means of a device which has been given the characteristic features defined in the appended claims. An illustrative example of the invention will be described below with reference to the enclosed drawings, wherein Fig. 1 shows a device according to the invention before compression has started and Fig. 2 shows the device according to Fig. 1 after compression has been carried out. The device of the invention shown in Figs. 1 and 2 comprises an outer container 1, preferably in the form a barrel having a side wall 2 and a bottom 3.
A perforated plate 4 which extends in principle along the whole side wall 2 of the container 1 is placed in the con tainer 1. The perforated plate 4 is at a substantially constant distance from the side wall 2.
A compression bag 5 is placed inside the perforated plate 4, said bag being anchored in the region of its upper edge to the upper edge of the container 1 by means of a ring 6 which clamps the upper portion of the compression bag 5 against the upper edge of the container 1 in suitable manner.
In the region of the bottom of the container 1 on its inside a plate 7 is placed which is fixed to the bottom of the container 1 by the aid of a suitable fastening means.
A portion of the bottom of the compression bag 5 is located between the plate 7 and the bottom 3 of the container 1 meaning that the bag 5 is anchored to the bottom of the container 1. An opening 8 for supply and discharge of air is made in the side wall 2.
The device described schematically above functions in the following way.
Before the device is to be used air is sucked out through the opening 8 in the direction of the arrow 9, see
Fig. 1. Said suction of air can for instance be carried out by means of a pump or the like.
The compression bag 5 will then be sucked to the inside of the perforated plate 4. A sack 10, the contents of which are to be compressed, is now placed in the container 1 within the compression bag 5. Air is supplied to the opening 8 in the direction of the arrow 11, see Fig. 2. The space between the side walls 2 and the bottom 3 of the container 1 and the compression bag 5, respectively, will then be filled with air meaning that certain portions of the compression bag 5 will abut the sack 10 and compress this, see Fig. 2, in an increasing degree the more air is pumped through the opening 8 in the direction of the arrow 11. When the sack 10 is compressed air is pressed out of this, and it can for instance assume a form according to Fig. 2.
When a desired compression degree (for example 50%) has been reached the sack 10 is sealed at its open end. In this way the sack 10 will maintain its compressed form even when the compression bag 5 is drawn back by air being sucked out through the opening 8.
As is apparent from Fig. 2 the function of the plate 7 is to prevent the bag 5 from going off upwards from the container, the consequence of which of course would be, also, that the sack 10 was displaced upwards.
The sack 10 compressed in the way indicated above is thereafter removed from the container 1 when the compression bag 5 has returned to the position according to Fig. 1.
As there is a certain negative pressure in the sack it does not matter so much if a hole should happen to occur on the bag as in that case only air is sucked into the bag whereas the contents do not get out to any large extent. Of course the capacity of the pump or the like used for sucking out and pumping in, respectively, air through the opening 8 is chosen all according to the compression degree desired and the material to be compressed.
It is the object of the perforated plate 4 arranged within the container to create a certain distance between the compression bag 5 and the side wall 2 of the container 1 so that passage of air between these is ensured.
Of course other constructive solutions are possible within the scope of the invention to ensure air passage between the compression bag and the container 1 so that the bag does not adhere to the container. Thus, the container may for instance be compressed along its periphery so that channels for the air are formed.
The container 1 is preferably made of a stiff, self-sup porting material, for example sheet. However, the container may also consist of a softer material that is stiffened in a required way, for example by means of an reinforcement.
The invention is by no means limited to the illustrative example described above but can be freely varied within the scope of the appended claims.

Claims

1. A device for compressing a compressible material packed in an air-impermeable casing, for example a plastic sack (10), said device comprising an outer container (i) having a side wall (2) and a bottom (3), a bag (5) of an air-impermeable material arranged within said container (1), said bag (5) being anchored to the container (1) in certain portions, said device further comprising an opening (8) enabling supply and discharge of air in a space between the container (1) and the bag (5), c h a r a c t e r i z e d in that an air-impermeable means (4) is arranged between the container (1) and the bag (5), said means separating the bag (5) from the side wall (2) of the container (1) and ensuring air passage between the side wall (2) of the container (1) and the bag (5).
2. The device of claim 1, c h a r a c t e r i z e d in that the air-impermeable means consists of a perforated plate (4).
3. The device of claim 1 or 2 , c h a r a c t e r i z e d in that the bag (5) is anchored to the container (1) in the region of the upper edge of the container (1) on one hand, and, on the other hand, in the region of the bottom (3) of the container (1).
4. The device of claim 3, c h a r a c t e r i z e d in that the anchorage in the region of the upper edge of the container (1) is carried out by means of a clamp ring (6).
5. The device of claim 3 or 4, c h a r a c t e r i z e d in that the anchorage in the region of the bottom of the container (1) is carried out by using a plate-like means (7), fixed to the bottom (3) of the container (1), said bag (5) being received between the plate-like means (7) and the bottom (3).
PCT/SE1986/000533 1985-05-21 1986-11-21 A device for compressing a compressible material WO1988003892A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8502489A SE455409B (en) 1985-05-21 1985-05-21 Compressor for particulate material

Publications (1)

Publication Number Publication Date
WO1988003892A1 true WO1988003892A1 (en) 1988-06-02

Family

ID=20360287

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1986/000533 WO1988003892A1 (en) 1985-05-21 1986-11-21 A device for compressing a compressible material

Country Status (2)

Country Link
SE (1) SE455409B (en)
WO (1) WO1988003892A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991002681A1 (en) * 1989-08-22 1991-03-07 Claes Granfelt A method and an apparatus for reducing the volume of a flexible package to a minimum and a package provided in such a way
EP0844179A1 (en) 1996-11-26 1998-05-27 Kraft Foods, Inc. Method of opening flattened bags
EP0989059A1 (en) 1998-09-10 2000-03-29 Gerrit Jan Vink Device for compressing bulky materials by way of vacuum method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837127A1 (en) * 1977-09-02 1979-03-15 Oordt & Co Holding Bv IN ESSENTIAL DOUBLE-WALLED, AIR-TIGHT PACKAGING AND PROCESS FOR MANUFACTURING SUCH PACKAGING

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837127A1 (en) * 1977-09-02 1979-03-15 Oordt & Co Holding Bv IN ESSENTIAL DOUBLE-WALLED, AIR-TIGHT PACKAGING AND PROCESS FOR MANUFACTURING SUCH PACKAGING

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991002681A1 (en) * 1989-08-22 1991-03-07 Claes Granfelt A method and an apparatus for reducing the volume of a flexible package to a minimum and a package provided in such a way
EP0844179A1 (en) 1996-11-26 1998-05-27 Kraft Foods, Inc. Method of opening flattened bags
EP0989059A1 (en) 1998-09-10 2000-03-29 Gerrit Jan Vink Device for compressing bulky materials by way of vacuum method

Also Published As

Publication number Publication date
SE8502489D0 (en) 1985-05-21
SE8502489L (en) 1986-11-22
SE455409B (en) 1988-07-11

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