EP0656295B1 - Vorrichtung zum Verschliessen von Verpackungen für Geweberollen - Google Patents

Vorrichtung zum Verschliessen von Verpackungen für Geweberollen Download PDF

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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
Application number
EP94118419A
Other languages
English (en)
French (fr)
Other versions
EP0656295A1 (de
Inventor
Paolino Gastoldi
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.)
LA MECCANICA COSTRUZIONE MACCHINE TESSILI SpA
Original Assignee
LA MECCANICA COSTRUZIONE MACCHINE TESSILI SpA
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 LA MECCANICA COSTRUZIONE MACCHINE TESSILI SpA filed Critical LA MECCANICA COSTRUZIONE MACCHINE TESSILI SpA
Publication of EP0656295A1 publication Critical patent/EP0656295A1/de
Application granted granted Critical
Publication of EP0656295B1 publication Critical patent/EP0656295B1/de
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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.

Claims (3)

  1. Verschlussvorrichtung für Verpackungen (2) von Geweberollen, insbesondere für Kunststoffverpackungen (2), umfassend:
    ein erstes im wesentlichen starres Verschlusselement aus Kunststoff, das einen zu verschliessenden Bereich (3a) der Verpackung (2) teilweise umschliesst,
    sowie ein zweites Verschlusselement aus Kunststoff, das mit dem ersten Verschlusselement in einer Vielzahl von Positionen derart verbunden werden kann, dass der zu verschliessende Bereich (3a) vollkommen umschlossen wird;
    wobei das erste und das zweite Verschlusselement vorgeformte einander gegenüberliegende Fixierflächen (9a, 9b) bilden, zwischen denen der zu verschliessende Bereich (3a) zusammengedrückt wird, sowie Mittel zur gegenseitigen Verbindung durch zwangsweisen Eingriff aufweisen,
    das erste Verschlusselement ein im wesentlichen U-förmig ausgebildetes Klammerelement (4) ist, das in seinem Inneren eine im wesentlichen glatte Aufnahme (4a) bildet und zwei mit ausserhalb der Aufnahme (4a) angeordneten, gezahnten Klemmabschnitten (8) versehene Schenkel (6) aufweist,
    das zweite Verschlusselement eine Platte (7) mit zwei kalibrierten Löchern (7a) ist, die so bemessen sind, dass sie die Schenkel (6) mit den gezahnten Klemmabschnitten (8) aufnehmen und eine unlösbare Verbindung herstellen, wenn die Platte (7) mit dem Klammerelement (4) verbunden wird,
    dadurch gekennzeichnet, dass die Zähne der gezahnten Klemmabschnitte (8) jeweils eine zu dem mittleren Abschnitt des U-förmigen Klammerelementes (4) im wesentlichen parallele Querseite (8b) aufweisen,
    und dass bei Eingriff von Platte (7) und Klammerelement (4) die Querseiten (8b) die Platte (7) ausserhalb der kalibrierten Löcher (7a) sichern, was eine nach aussen gerichtete Wölbung der Verschlussfläche (9b) der Platte (7) zur Folge hat.
  2. Vorrichtung nach Anspruch 1, bei der die kalibrierten Löcher (7a) eine glatte kreisförmige Ausbildung haben.
  3. Gebrauch einer Vorrichtung nach Anspruch 1 zum Verschluss einer Geweberollenverpackung, wobei die Verpackung (2) aus Kunststoff hergestellt ist und das U-förmige Klammerelement (4) und die Platte (7) aus demselben Kunststoff hergestellt sind, aus dem die Verpackung (2) besteht.
EP94118419A 1993-12-03 1994-11-23 Vorrichtung zum Verschliessen von Verpackungen für Geweberollen Expired - Lifetime EP0656295B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI932533 1993-12-03
IT93MI002533A IT1265360B1 (it) 1993-12-03 1993-12-03 Dispositivo e procedimento di sigillatura per imballaggi di tessuti in rotolo

Publications (2)

Publication Number Publication Date
EP0656295A1 EP0656295A1 (de) 1995-06-07
EP0656295B1 true EP0656295B1 (de) 1998-06-10

Family

ID=11367282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118419A Expired - Lifetime EP0656295B1 (de) 1993-12-03 1994-11-23 Vorrichtung zum Verschliessen von Verpackungen für Geweberollen

Country Status (5)

Country Link
EP (1) EP0656295B1 (de)
AT (1) ATE167145T1 (de)
DE (1) DE69410945T2 (de)
ES (1) ES2116511T3 (de)
IT (1) IT1265360B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2779047B1 (fr) * 1998-06-02 2000-08-25 Malip Sa Dispositif de cintre destine a la suspension d'articles de tissus dans les lineaires du commerce, et notamment de rideaux

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA786502B (en) * 1977-11-23 1979-10-31 E Madsen A clamp binder
DK250886A (da) * 1986-05-29 1987-11-30 Emc Tamaco As Fremgangsmaade til taet afbinding af et indsnaevringssted paa en roerfolieemballage bestaaende af formstoffolie med hoej taethed, samt binder til brug herved
DE4012897A1 (de) * 1990-02-26 1991-08-29 Windmoeller & Hoelscher Textiltragetasche aus thermoplastischem kunststoff und verfahren zu ihrer herstellung
DE9212470U1 (de) * 1992-09-16 1993-02-04 Dostro-Kunststoffwerk Gmbh, 4543 Lienen, De

Also Published As

Publication number Publication date
IT1265360B1 (it) 1996-11-22
ATE167145T1 (de) 1998-06-15
DE69410945T2 (de) 1998-10-08
EP0656295A1 (de) 1995-06-07
DE69410945D1 (de) 1998-07-16
ES2116511T3 (es) 1998-07-16
ITMI932533A1 (it) 1995-06-03
ITMI932533A0 (it) 1993-12-03

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