EP0656295B1 - Device for sealing packages of rolled-up fabrics - Google Patents
Device for sealing packages of rolled-up fabrics Download PDFInfo
- Publication number
- EP0656295B1 EP0656295B1 EP94118419A EP94118419A EP0656295B1 EP 0656295 B1 EP0656295 B1 EP 0656295B1 EP 94118419 A EP94118419 A EP 94118419A EP 94118419 A EP94118419 A EP 94118419A EP 0656295 B1 EP0656295 B1 EP 0656295B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping
- plate
- plastic material
- packages
- sealing
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/1616—Elements constricting the neck of the bag
Definitions
- the invention relates to a device for sealing packages of rolled-up fabrics, in particular plastics packages.
- packing sheets generally made of plastic material, polyethylene for example, are currently wrapped around fabric rolls.
- packing sheets are clamped and locked to the rolled-up position in many cases with the aid of clips or staples of metal material.
- Said clips are bent upon themselves in the same manner as common staples for holding paper sheets together.
- the staples are applied to the end portions of the packing sheets which are disposed close to the ends of the rolls and folded in a layered or pleated form.
- This known technique has the merit of being simple and cheap and also of holding said end portions of the packing sheets steadily, so that they practically form end bunches in the rolls, which bunches are also very useful for grasping the fabric rolls when they are arranged in a stack.
- the end portions of said packages may be heat sealed, but this process is restricted to fabric rolls which are not very heavy since in this case break ages in the packaging material are likely to occur.
- Said packing sheets may also be sealed by ultrasonic welding, but this technique involves high costs for installation and in addition is of difficult adjustment.
- the package ends may also be closed by adopting the technique of heat shrinkage by hot air. This known technique however is not widely applied because in some cases the material to be packed can be damaged.
- a device for sealing packages has further been developed which are made of two elements to be mutually engaged in use.
- a device of this type having the features of the preamble of claim 1, is disclosed in WO-A-8 707 240.
- Said device has a relatively thick plate element for clamping the package end within the seat of the U-shaped element, and the toothed locking portions provided on the arms of the U-shaped element engage ribs or barbs shaped within the holes of the plate element.
- Such a device has a limited adaptability to different sizes and thicknesses of packages, because in the case of too small sealing areas relative to the area of the seat of the U-shaped element the package material pressed by the opposed clamping surfaces can expand laterally toward the arms of the U-shaped element and this may jeopardize the sealing at the expanded portions. Furthermore, this device is relatively costly owing to the need of pre-shaping mating engagement means on the U-shaped element and in the plate element, and the engagement may become critical in the case of high clamping pressures.
- Said device comprises a U-shaped element with teeth on the inside of its arms, and an annular element adapted to receive the arms of the U-shaped element.
- the technical task underlying the present invention is to devise a sealing device capable of substantially eliminating the above drawbacks.
- a package 2 consisting of a wrapping sheet of plastic material such as polyethylene for example, gathered at its ends so as to form end portions 3 folded in a pleated configuration.
- the device 1 comprises a substantially rigid first clamping element consisting of a clip in the form of a staple 4, that is having a substantially U-shaped configuration comprising a central portion 5 and two side arms 6 parallel to each other.
- Staple 4 is adapted to partly encircle a sealing area 3a disposed at an end portion 3 of said package 2.
- a second clamping element consisting of a plate 7 provided with a pair of gauged holes 7a to be coupled by force with the side arms 6 of staple 4 according to a plurality of positions, so as to define therewith a body fixedly and completely embracing the sealing area 3a.
- said first and second clamping elements comprise means for mutual engagement by forced fitting adapted to define an irremovable clamping.
- staple 4 is provided on its side arms with toothed locking portions 8 consisting of a series of extensions insertable in the gauged holes 7a, said gauged holes being such sized, relative to the locking portions 8, that the plate 7 once fitted can be removed therefrom only if it is broken or greatly torn.
- the gauged holes 7a have a smooth circular configuration.
- the locking portions 8 are formed on external regions of the side arms 6 turned outwardly from staple 4, so that the locking portions 8 of a side arm 6 do not face the locking portions of the other side arm 6.
- the locking portions 8 turned outwardly of staple 4 enable the formation of a wide and smooth seat 4a, at the inside of said staple, into which the package 2 to be clamped can be introduced easily and without any risks of tearing.
- Each of the locking portions 8 is saw-toothed and the teeth each exhibit an inclined face 8a with respect to the central portion 5, and a transverse face 8b substantially parallel to said central portion 5.
- the inclined faces 8a promote a forced insertion of the plate 7, if conveniently pushed at the gauged holes 7a, whereas the transverse faces 8b fixedly hook the plate 7 externally of the gauged holes 7a, once it has been conveniently fitted, as best visible in Fig. 3.
- the first and second clamping elements 4 and 7 define opposite clamping surfaces, 9a and 9b respectively, between which the sealing area 3a is squashed, within the seat 4a.
- the clamping surface 9a is defined by said central portion 5, as shown in the drawings.
- the first and second clamping elements 4 and 7 are made of rigid or semirigid plastic material. Therefore the clamping surfaces 9a, 9b are pre-shaped on the elements themselves.
- the selected plastic material is the same material as used for the manufacture of package 2: for example, if the packing sheets are made of polyethylene, the first and second clamping elements 4 and 7 will be of polyethylene as well.
- Staple element 4 is positioned on the sealing area 3a of a package 2 so that it embraces said area between the side arms 6 thereof, within the smooth seat 4a.
- plate 7 can be arranged so that its gauged holes 7a are disposed on the side arms 6 and pushed towards the central portion 5.
- the thurst action must be exerted at the ends of plate 7 or at the gauged holes 7a so that a forced fitting of the plate itself may be allowed, due to the presence of the inclined faces 8a.
- a thrust exerted on the middle portion of plate 7 practically does not enable a forced fitting, in that the inclined faces 8a are located externally of staple 4.
- the plate 7 is moved close to the central portion 5 until it completely compacts the package pleats between the clamping surfaces 9a, 9b.
- the toothed locking portions 8 stop the plate 7 to the final position reached and prevent slipping off of same.
- the clamping surfaces 9a and 9b clamp the sealing area 3a by moving close to each other and therefore the staple 4 can be conceived of large sizes as regards the length of both the central portion 5 and side arms 6.
- the adaptability of the device 1 to any type of rolled-up-fabric package is not to the detriment of the hermetic seal of same in that, even if the package 2 occupies only one portion of the room included between the side arms 6, the greater pressure necessarily exerted exactly at said side arms prevents the pleats from opening or moving to the free space.
- the sealing area 3a is submitted to opposite pressures exerted by substantially parallel and opposite surfaces, corresponding to the clamping surfaces 9a, 9b.
- Pleats are only subjected to compression and any twisting stress is reduced.
- the clamping efforts 10 are exerted close to the end edges of the sealing area 3a.
- the invention achieves important advantages.
- the device is adapted for packages which are very different from one another as regards size and thickness, because closure takes place between two opposite surfaces that can be conceived of large sizes and variably spaced apart from each other.
- the sealing action does not cause twistings of the package, but a mere compression of same, thereby avoiding risks of tearings.
- compression is particularly marked exactly at the edge pleats which are more critical for a hermetic sealing.
Abstract
Description
Claims (3)
- A sealing device for packages (2) of rolled-up fabrics, in particular for packages (2) of plastic material, comprising:a substantially rigid first clamping element made of plastic material and adapted to partly encircle a sealing area (3a) of a respective one of said packages (2),and a second clamping element of plastic material to be engaged with said first clamping element according to a plurality of positions, so as to completely enclose said sealing area (3a);said first and second clamping elements defining pre-shaped and opposite clamping surfaces (9a, 9b) between which said sealing area (3a) is squashed, and having means for mutual engagement by forced fitting,said first clamping element being a substantially U-shaped staple element (4) defining, at the inside thereof, a substantially smooth seat (4a), and having two side arms (6) provided with toothed locking portions (8) disposed externally of said seat (4a),and said second clamping element being a plate (7) having a pair of gauged holes (7a) sized to receive said arms (6) with said toothed locking portions (8) and providing an irremovable connection when said plate (7) is engaged with said staple element (4),
characterised in that the teeth of said toothed locking portions (8) have each a transverse face (8b) substantially parallel to the central portion of said U-shaped staple element (4),and in that in the engaged position of said plate (7) with said staple element (4) said transverse faces (8b) fixedly hook said plate (7) externally of said gauged holes (7a), allowing an outwardly-convex bending of the clamping surface (9b) of said plate (7). - A device according to claim 1, wherein said gauged holes (7a) have a smooth circular configuration.
- Use of a device according to claim 1 for sealing a package of a rolled-up fabric, wherein the package (2) is made of a plastic material and wherein said U-shaped staple element (4) and said plate (7) are made of the same plastic material as that of said package (2).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI932533 | 1993-12-03 | ||
IT93MI002533A IT1265360B1 (en) | 1993-12-03 | 1993-12-03 | SEALING DEVICE AND PROCEDURE FOR ROLL FABRIC PACKAGING |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0656295A1 EP0656295A1 (en) | 1995-06-07 |
EP0656295B1 true EP0656295B1 (en) | 1998-06-10 |
Family
ID=11367282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94118419A Expired - Lifetime EP0656295B1 (en) | 1993-12-03 | 1994-11-23 | Device for sealing packages of rolled-up fabrics |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0656295B1 (en) |
AT (1) | ATE167145T1 (en) |
DE (1) | DE69410945T2 (en) |
ES (1) | ES2116511T3 (en) |
IT (1) | IT1265360B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2779047B1 (en) * | 1998-06-02 | 2000-08-25 | Malip Sa | HANGER DEVICE FOR SUSPENSION OF FABRIC ARTICLES IN COMMERCIAL LINEARS, ESPECIALLY CURTAINS |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA786502B (en) * | 1977-11-23 | 1979-10-31 | E Madsen | A clamp binder |
DK250886A (en) * | 1986-05-29 | 1987-11-30 | Emc Tamaco As | PROCEDURE FOR TERMINATING A CUTTING PLACE ON A RUBBER FILM PACKAGING CONTAINING HIGH-SAFETY PAPER FILM AND BINDING FOR USE |
DE4012897A1 (en) * | 1990-02-26 | 1991-08-29 | Windmoeller & Hoelscher | TEXTILE CARRYING BAG OF THERMOPLASTIC PLASTIC AND METHOD FOR THEIR PRODUCTION |
DE9212470U1 (en) * | 1992-09-16 | 1993-02-04 | Dostro-Kunststoffwerk Gmbh, 4543 Lienen, De |
-
1993
- 1993-12-03 IT IT93MI002533A patent/IT1265360B1/en active IP Right Grant
-
1994
- 1994-11-23 ES ES94118419T patent/ES2116511T3/en not_active Expired - Lifetime
- 1994-11-23 EP EP94118419A patent/EP0656295B1/en not_active Expired - Lifetime
- 1994-11-23 AT AT94118419T patent/ATE167145T1/en not_active IP Right Cessation
- 1994-11-23 DE DE69410945T patent/DE69410945T2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69410945T2 (en) | 1998-10-08 |
ES2116511T3 (en) | 1998-07-16 |
ATE167145T1 (en) | 1998-06-15 |
IT1265360B1 (en) | 1996-11-22 |
ITMI932533A1 (en) | 1995-06-03 |
ITMI932533A0 (en) | 1993-12-03 |
DE69410945D1 (en) | 1998-07-16 |
EP0656295A1 (en) | 1995-06-07 |
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