EP1274625B1 - Feed roll for package tubing equipped with cutting and sealing means - Google Patents

Feed roll for package tubing equipped with cutting and sealing means Download PDF

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Publication number
EP1274625B1
EP1274625B1 EP01913948A EP01913948A EP1274625B1 EP 1274625 B1 EP1274625 B1 EP 1274625B1 EP 01913948 A EP01913948 A EP 01913948A EP 01913948 A EP01913948 A EP 01913948A EP 1274625 B1 EP1274625 B1 EP 1274625B1
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EP
European Patent Office
Prior art keywords
sheath
head
paying out
welding
out device
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
EP01913948A
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German (de)
French (fr)
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EP1274625A1 (en
Inventor
Alexandre Paviot
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.)
Papiers A Paviot
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Papiers A Paviot
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Filing date
Publication date
Priority claimed from FR0002908A external-priority patent/FR2806058B1/en
Application filed by Papiers A Paviot filed Critical Papiers A Paviot
Publication of EP1274625A1 publication Critical patent/EP1274625A1/en
Application granted granted Critical
Publication of EP1274625B1 publication Critical patent/EP1274625B1/en
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    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state

Definitions

  • the present invention relates to the field of packaging of products on their places of sale and, in particular, food products sold at retail.
  • the invention relates, more particularly, to the field of devices used to store the paper or film used for packaging and to provide, at the time of ask, the paper to the shopkeeper.
  • the invention also relates to the field of machines used to ensure a substantially watertight closure of the packaging realized.
  • the patent FR 2 775 252 has proposed to implement a sheath consisting, in part at least, made of heat-sealable material.
  • This sheath, packaged in rolls, is intended for cut at the place of use to a length slightly greater than that of the product to be packaged.
  • One end of the sheath is then closed by heat sealing, to make a bag.
  • the other end of the sheath is heat-sealed, so as to obtain a substantially sealed package.
  • Such a packaging sheath is particularly useful for the packaging of food products, such as fish or meat, when from the sale of these retail.
  • WO 94 227 23 describes a packaging machine designed to produce bags at high speed from a spool heat-sealable packaging.
  • This machine comprises a body provided with means of support of a packaging sheath coil.
  • This machine also has a head of the sheath through a window and guide means of the sheath between the coil and the output head.
  • the output head comprises welding and cut of the sheath, mounted on a movable moving gears comes by a motor organ.
  • the actuating means of the welding and cutting means described in this patent are relatively complex and expensive and do not allow make sure, a perfectly waterproof packaging.
  • the present invention therefore aims to remedy the disadvantages stated above by proposing a simple and inexpensive allow, at the same time, to make available to the user a sheath heat-sealable packaging, as well as the means necessary for the production of a waterproof packaging from this sheath.
  • the invention aims to propose means making it easy to produce the final closure of the packaging obtained by means of the heat-sealable sheath.
  • the welding means are arranged in downstream of the cutting means with respect to the unwinding direction of the sheath.
  • the output head comprises a second window, called welding, adapted to allow, from outside the head, an introduction of at least part of a package intended to be welded by the welding means.
  • the output head comprises a non-return flap placed between the cutting means and the welding means and intended to prevent access to the cutting means from the outside of the head by the exit window.
  • the invention also aims to propose a reel that can be used according to different positions, depending on where it needs to be disposed.
  • the output head is removable and the body has means for fixing the head adapted to allow mounting of the head in at least two orientations distinct.
  • Fig. 1 is a longitudinal section of a preferred embodiment of a machine according to the invention.
  • Fig. 2 is an exploded perspective view of the unrolling machine according to FIG. 1 in another position of use.
  • Fig. 3 is a view similar to FIG. 1 , showing another phase of use of the unroller according to the invention.
  • Fig. 4 is a longitudinal section illustrating another method of mounting the unwinder shown in FIG. 1 .
  • FIGS. 5 and 6 are views similar to FIGS. 1 and 3 showing phases of use of another embodiment of the unroller according to the invention.
  • an unwinder according to the invention, generally designated by reference 1, is designed to receive at least one coil 2 of heat-sealable packaging sheath, as described in patent FR 2 775 252.
  • the unroller 1 comprises a body 3 provided, in particular, means 4 for supporting at least one coil 2 of packaging sheath.
  • the body 3 is, moreover, equipped with an outlet head 5 of the sheath and means 6 for guiding the sheath between the coil 2 and the outlet head 5 .
  • the support means 4 of the coil 2 are formed by an axis 8 intended to pass through the center of the coil and come to rest in two cradles 9 arranged in the body 3 of the unroller 1 .
  • the support means 4 could be made in another way, such as, for example, in the form of two rollers on which the coil 2 would rest resting on its outer surface.
  • the output head 5 comprises at least one window 10 for the output of the sheath 11 from the coil 2 , as will appear thereafter.
  • the head 5 also comprises means 15 for cutting the sheath 11 , as well as means 16 for welding the sheath 11.
  • the cutting means 15 are, preferably but not exclusively, placed upstream of the welding means 16 with respect to the direction of unwinding of the sheath 11, as indicated by the arrow F 1 .
  • the cutting means 15 comprise a movable knife 20 carried by an arm 21 oscillating about a horizontal axis 21 1 .
  • the knife 20 of a length greater than or equal to the width of the packaging sheath 11 , is intended to cooperate with a fixed cutting groove 22 of length substantially equal to that of the knife 20 .
  • the knife 20 and the groove 22 form a kind of jaw, capable of being opened or closed by the movements of the oscillating arm 21 which thus carries part of the cutting means 15.
  • the arm 21 is slaved in opening by elastic return means, so as to be held in the open position A , as illustrated in FIG. 1.
  • the welding means 16 comprise a heating bar 25 mounted integral with the oscillating arm 21.
  • the heating bar 25 is intended to cooperate with a counter bar 26 for pressing an element or part of the sheath 11 to be welded.
  • the heating bar 25 and the counter bar 26 have a length greater than or equal to the width of the packaging sheath 11.
  • the heating bar 25 is movable, while the counter bar 26 is fixed.
  • the oscillating arm 21 carries part of the welding means 16. Of course, it could be envisaged to invert the positions of these two elements.
  • the knife 20 and the groove 22, as well as the bar 25 and the counter bar 26 are arranged substantially transversely to the sheath 11 and, more particularly, to its unwinding direction F 1 .
  • the unwinder 5 comprises means 6 for guiding the sheath 11 between the spool 2 and the outlet head 5 , adapted to, preferably but not exclusively, bring the sheath 11 downstream of the cutting means 15 , by in relation to the unwinding direction F 1 and directing the sheath 11 towards the exit window 10.
  • the guiding means 6 comprise, first of all, a guide roller 30 and a pressure roller 31 between which the packaging sheath 11 is intended to pass as shown in phantom in FIGS. 1 and 3 .
  • the guiding means 6 further comprise driving means 32 of the guide roller 30, so as to ensure that the sheath 11 advances or unwinds by rotating the roller 30.
  • the drive means are constituted by a handle 32 secured to the roll 30 and accessible from outside the body 3 of the unroller 1 .
  • the drive means 32 could be made in a form other than a handle, such as, for example but not exclusively, in the form of a motor controlled so as to operate automatically or be controlled by a switch accessible from outside the body 3 .
  • the means 32 could provide a rotational drive of the only pressure roller 31 or two guide rollers 30 and presser 31 simultaneously.
  • the guiding means 6 also comprise at least one guiding plate 33 which extends upstream and downstream with respect to the unfolding direction F 1 of the guiding rollers 30 and pressing roller 31 .
  • This guide plate 33 is adapted to guide the sheath before and after the rollers 30 and 31 , as well as during its initial introduction between the rollers 30 and 31 .
  • the guide plate 33 is curved and forms an angle just before the guide roller 30.
  • the plate 33 thus defines, with the guide roller 30, an introduction zone 34 which forms a kind of funnel in which the end of the sheath 11 is introduced during the initial setting up of the coil 2.
  • the guide plate 33 extends between the guide rollers 30 and presser 31. In order that the rollers 30 and 31 ensure their guiding function and drive the plate 33 defines, then at least one zone 35 in which the pressure roller 31 and guide roller 30 can simultaneously guide and press the sheath 11 .
  • the plate 33 defines two lateral zones 35 for guiding the sheath 11 between the rollers 30 and 31 .
  • the guide roller 30 then has a central recess 36 for the passage of the plate 33 and, on either side of this recess 36, a shoulder 37 intended to cooperate with the pressure roller 31 to provide guidance and training sheath 11.
  • the unroller according to the invention thus constituted is used as follows.
  • the spool 2 is put in place, then the sheath 11 is passed between the rollers 30 and 31 by a user or operator. To do this, the user just applies the sheath 11 against the plate 33 by advancing to the roller 30.
  • the funnel shape of the introduction zone 34 then facilitates the management of the sheath 11 by the guide rollers 30 and presser 31.
  • the unroller 1 cuts the sheath 11 with the knife 20 and, on the other hand, seals with the heating element 16 the end of the cut sheath element.
  • the heating element 16 is maintained at a temperature corresponding to the melting temperature of at least one constituent of the sheath, by a control system not falling within the scope of the present invention.
  • the operator thus made from the sheath 11 and by a single operation of the oscillating arm 21 , a kind of bag open on one side, by which it is possible to introduce a product to be packaged.
  • the operator can reintroduce the unsealed end of the bag into the window 10, so as to place this open end at the welding means 16. Then, by a new action on the handle 40 in the direction of the arrow F 2 , the user welds the fourth side of the bag and conditions, in a substantially sealed manner, the product placed inside the package obtained from the sheath 11 .
  • the welding means 16 downstream of the cutting means 15 with respect to the unwinding direction F 1 of the sheath, it is possible to weld a portion of the packaging introduced from the outside of the the head 5 .
  • the output head 5 comprises a second window 41 , said welding, disposed above the exit window 10.
  • This welding window 41 is adapted to allow an introduction, from the outside of the head, of the part of the packaging intended to be closed by the welding means 16.
  • Figs. 5 and 6 illustrate a second alternative embodiment of the unroller according to the invention which differs from the embodiment variant described in relation with FIGS. 1 to 4 in that the cutting head 5 comprises a non-return flap 55 placed between the cutting means 15 and the welding means 16 .
  • One end of this flap 55 is preferably attached to the arm 21 between the knife 20 and the welding bar 25, while the other end extends to the window 10, as shown in FIG. 5.
  • the flap 55 thus extends by its own weight at the lower part of the exit window 10.
  • the flap 55 is made of a flexible material which has a melting temperature higher than the welding temperature of the sheath 11 , so as not to be altered by the welding means 15.
  • the flap 55 provides a non-return function to prevent access to the cutting means 15 from the outside of the head 5 by the exit window 10 . Indeed, given the position of the non-return flap 55, the sheath 11, from the coil 2 , out of the window 10 passing below the flap 55 which then contributes to the guiding of the sheath 11 until at the window 10.
  • the flap 55 limits this introduction, so that the end of the sheath can be reintroduced into the head 5 only up to the level of the means of welding 16 . In this way, the flap 55 prevents the reintroduced part of the sheath from being cut by the cutting means 15 and thus prevents the formation of waste which could cause a jamming of the groove 22.
  • non-return flap 55 is made of a material that does not affect the efficiency of the welding means 16 , so that the sheath coming from the spool 2 is perfectly welded when it is pressed. between the heating bar 25 and the counter bar 26 with the interposition of the flap 55 between the sheath 11 and the bar 25.
  • the output head 5 is removable and the body 3 has fastening means of the head 5 adapted to allow mounting of the head in at least two distinct orientations.
  • the head 5 can be fitted on the body 3 , so that the coil 2 is placed below the head, as shown in FIG. 1 or, above the head 5 , as shown in FIG. 4 .
  • the fixing means of the head 5 on the body 3 may be, for example, constituted by screws, not shown, intended to pass through complementary bores 45 and 46 arranged respectively on the body 3 and the head 5 .
  • the unroller 1 can be fixed on a wall bracket S , such as a wall or the lower part of a bench.
  • the body 3 comprises means, not shown, for fixing or hanging on the support.
  • the unroller 1 When the unroller 1 is in the configuration shown in FIG. 4, the coil being placed above the head 5, it is possible to place the unroller on a bench or a table P , the body 3 then being provided with feet 47.
  • the guiding means 6 comprise, downstream of the guide roller 30, in the unwinding direction F 1 of the sheath 11, a tunnel 50 guiding the sheath inside the head 5 , upstream of the cutting means 15 or welding 16 .
  • the tunnel 50 has at its end facing the rollers 30, 31 an inlet zone 51 flared, as shown more particularly in FIG. 1.
  • the tunnel 50 advantageously defines, whatever the orientation of the body 3, a bearing and guiding surface for the sheath 11 and guides the sheath so as to direct it towards the outlet window 10 of the exit head 5 .
  • the guide means 6 When the head 5 is removable, the guide means 6 , and in particular the tunnel 50, are integral with the body 3 .
  • the tunnel 50 is adapted to then extend inside the outlet head 5 as close as possible to the cutting means 15.
  • the guide means and more particularly the plate 33 and the rollers 30 and 31, are adapted to make the sheath 11 take an angle path, so as to reduce, as far as possible, the Overall dimensions of the unroller 1.
  • the path of the sheath could also be rectilinear.
  • the output head 5 is removable.
  • the output head is integral with the body 3 without being removable.
  • the guide tunnel 50 is implemented, preferably when the head is removable, but it could be envisaged to use such a guide tunnel for a unrolling machine according to the invention having no output head removable.
  • the means 40 for simultaneous operation of the cutting means 15 and welding 16 are formed by a handle and an oscillating arm.
  • these operating means 40 could be made in another way and could for example be motorized.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Packaging Of Special Articles (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Making Paper Articles (AREA)

Abstract

The invention concerns packaging of products on sale outlets. It concerns a feed roll for heat sealing package tubing reel ( 11 ), comprising a body ( 3 ) provided with, in particular: means ( 4 ) supporting at least one reel ( 2 ) of package tubing ( 11 ); an outlet head ( 5 ) for the tubing including: at least an outlet window ( 10 ) for the tubing, means for cutting (15) the tubing, means for welding ( 16 ) the tubing, means ( 6 ) guiding the tubing between the reel ( 2 ) and the outlet head ( 5 ). The invention is useful for supplying and welding a heat sealing tubing in a fish market.

Description

La présente invention concerne le domaine de l'emballage de produits sur leurs lieux de vente et, notamment, de produits alimentaires vendus au détail.The present invention relates to the field of packaging of products on their places of sale and, in particular, food products sold at retail.

L'invention concerne, plus particulièrement, le domaine des dispositifs utilisés pour emmagasiner le papier ou le film utilisé pour l'emballage et fournir, à la demande, le papier au commerçant. L'invention concerne, également, le domaine des machines utilisées pour assurer une fermeture sensiblement étanche de l'emballage réalisé.The invention relates, more particularly, to the field of devices used to store the paper or film used for packaging and to provide, at the time of ask, the paper to the shopkeeper. The invention also relates to the field of machines used to ensure a substantially watertight closure of the packaging realized.

Dans le domaine de l'emballage des produits alimentaires, le brevet FR 2 775 252 a proposé de mettre en oeuvre une gaine constituée, en partie au moins, en matériau thermosoudable. Cette gaine, conditionnée en rouleaux, est destinée à être découpée sur le lieu d'utilisation à une longueur légèrement supérieure à celle du produit à emballer. Une extrémité de la gaine est alors fermée par thermosoudage, afin de réaliser un sachet. Ensuite, après introduction du produit à conditionner dans le sachet ainsi réalisé, l'autre extrémité de la gaine est thermosoudée, de manière à obtenir un emballage sensiblement étanche.In the field of food packaging, the patent FR 2 775 252 has proposed to implement a sheath consisting, in part at least, made of heat-sealable material. This sheath, packaged in rolls, is intended for cut at the place of use to a length slightly greater than that of the product to be packaged. One end of the sheath is then closed by heat sealing, to make a bag. Then, after introduction of the product to be packaged in the bag thus produced, the other end of the sheath is heat-sealed, so as to obtain a substantially sealed package.

L'utilisation d'une telle gaine d'emballage est particulièrement utile pour le conditionnement de produits alimentaires, tels que du poisson ou de la viande, lors de la vente de ces derniers au détail.The use of such a packaging sheath is particularly useful for the packaging of food products, such as fish or meat, when from the sale of these retail.

Toutefois, il est apparu qu'il n'existe pas, à la connaissance du demandeur, de dispositif permettant une mise en oeuvre sur les lieux de vente facile et rapide de la gaine d'emballage ou de conditionnement selon le brevet FR 2 775 252.However, it appeared that, to the knowledge of the applicant, of a device allowing an implementation on the easy places of sale and fast packaging or packaging sheath according to FR 2,775 252.

En effet, le document WO 94 227 23 décrit une machine d'emballage conçue pour réaliser à haute cadence des sachets à partir d'une bobine de gaine d'emballage thermosoudable. Cette machine comporte un corps pourvu de moyens de support d'une bobine de gaine d'emballage. Cette machine comporte également une tête de sortie de la gaine par une fenêtre et des moyens de guidage de la gaine entre la bobine et la tête de sortie. La tête de sortie comprend des moyens de soudage et de coupe de la gaine, montés sur un équipage mobile commandé en mouvement de va et vient par un organe moteur. Indeed, the document WO 94 227 23 describes a packaging machine designed to produce bags at high speed from a spool heat-sealable packaging. This machine comprises a body provided with means of support of a packaging sheath coil. This machine also has a head of the sheath through a window and guide means of the sheath between the coil and the output head. The output head comprises welding and cut of the sheath, mounted on a movable moving gears comes by a motor organ.

Les moyens d'actionnement des moyens de soudage et de coupe décrits dans ce brevet sont relativement complexes et onéreux et ne permettent pas de réaliser à coup sûr, un emballage parfaitement étanche.The actuating means of the welding and cutting means described in this patent are relatively complex and expensive and do not allow make sure, a perfectly waterproof packaging.

La présente invention vise donc à remédier aux inconvénients énoncés ci-dessus en proposant une dérouleuse de conception simple et peu onéreuse qui permette, tout à la fois, de mettre à la disposition de l'utilisateur une gaine d'emballage thermosoudable, ainsi que les moyens nécessaires à la réalisation d'un emballage étanche à partir de cette gaine.The present invention therefore aims to remedy the disadvantages stated above by proposing a simple and inexpensive allow, at the same time, to make available to the user a sheath heat-sealable packaging, as well as the means necessary for the production of a waterproof packaging from this sheath.

Afin d'atteindre cet objectif, l'invention concerne une dérouleuse pour bobine de gaine d'emballage thermosoudable, comprenant un corps pourvu, notamment :

  • de moyens de support d'au moins une bobine de gaine d'emballage,
  • d'une tête de sortie de la gaine comprenant :
    • au moins une fenêtre de sortie de la gaine,
    • des moyens de coupe de la gaine,
    • des moyens de soudage de la gaine,
  • de moyens de guidage de la gaine entre la bobine et la tête de sortie,
   caractérisée en ce que la tête de sortie comprend des moyens de manoeuvre simultanée des moyens de coupe et des moyens de soudage, formés par une poignée et un bras oscillant portant une partie des moyens de coupe et des moyens de soudage.In order to achieve this object, the invention relates to a reel for a heat-sealable packaging sheath, comprising a body provided, in particular:
  • means for supporting at least one packaging sheath spool,
  • an outlet head of the sheath comprising:
    • at least one exit window of the sheath,
    • cutting means of the sheath,
    • means for welding the sheath,
  • means for guiding the sheath between the coil and the output head,
characterized in that the output head comprises means for simultaneous operation of the cutting means and welding means, formed by a handle and an oscillating arm carrying a portion of the cutting means and welding means.

Selon une autre caractéristique, l'invention vise à proposer des moyens permettant de réaliser facilement la soudure de fermeture finale de l'emballage obtenu au moyen de la gaine thermosoudable.According to another characteristic, the invention aims to propose means making it easy to produce the final closure of the packaging obtained by means of the heat-sealable sheath.

Pour atteindre un tel objectif, les moyens de soudage sont disposés en aval des moyens de coupe par rapport au sens de déroulage de la gaine.To achieve such an objective, the welding means are arranged in downstream of the cutting means with respect to the unwinding direction of the sheath.

Selon une première variante de réalisation, la tête de sortie comprend une deuxième fenêtre, dite de soudage, adaptée pour autoriser, à partir de l'extérieur de la tête, une introduction d'une partie au moins d'un emballage destiné à être soudé par les moyens de soudage.According to a first variant embodiment, the output head comprises a second window, called welding, adapted to allow, from outside the head, an introduction of at least part of a package intended to be welded by the welding means.

Selon une deuxième variante de réalisation la tête de sortie comprend une bavette anti-retour placée entre les moyens de coupe et les moyens de soudage et destinée à empêcher l'accès aux moyens de coupe à partir de l'extérieur de la tête par la fenêtre de sortie.According to a second variant embodiment, the output head comprises a non-return flap placed between the cutting means and the welding means and intended to prevent access to the cutting means from the outside of the head by the exit window.

L'invention vise, également, à proposer une dérouleuse qui puisse être utilisée selon différentes positions, en fonction de l'emplacement où elle doit être disposée.The invention also aims to propose a reel that can be used according to different positions, depending on where it needs to be disposed.

Afin d'atteindre cet objectif et selon une caractéristique de l'invention, la tête de sortie est amovible et le corps présente des moyens de fixation de la tête adaptés pour autoriser un montage de la tête selon au moins deux orientations distinctes.In order to achieve this objective and according to a feature of the invention, the output head is removable and the body has means for fixing the head adapted to allow mounting of the head in at least two orientations distinct.

Diverses autres caractéristiques ressortent de la description faite ci-dessous en référence aux dessins annexés qui montrent, à titre d'exemples non limitatifs, des formes de réalisation de l'invention.Various other features are apparent from the description below with reference to the accompanying drawings which show, by way of examples not restrictive embodiments of the invention.

La fig. 1 est une coupe longitudinale d'une forme préférée de réalisation d'une dérouleuse selon l'invention. Fig. 1 is a longitudinal section of a preferred embodiment of a machine according to the invention.

La fig. 2 est une vue en perspective éclatée de la dérouleuse selon la fig. 1 dans une autre position d'utilisation. Fig. 2 is an exploded perspective view of the unrolling machine according to FIG. 1 in another position of use.

La fig. 3 est une vue, analogue à la fig. 1, montrant autre une phase d'utilisation de la dérouleuse conforme à l'invention. Fig. 3 is a view similar to FIG. 1 , showing another phase of use of the unroller according to the invention.

La fig. 4 est une coupe longitudinale illustrant un autre mode de montage de la dérouleuse illustrée à la fig. 1. Fig. 4 is a longitudinal section illustrating another method of mounting the unwinder shown in FIG. 1 .

Les fig. 5 et 6 sont des vues analogues respectivement aux fig. 1 et 3 montrant des phases d'utilisation d'une autre forme de réalisation de la dérouleuse selon l'invention. Figs. 5 and 6 are views similar to FIGS. 1 and 3 showing phases of use of another embodiment of the unroller according to the invention.

Comme cela ressort plus particulièrement des fig. 1 et 2, une dérouleuse selon l'invention, désignée dans son ensemble par la référence 1, est conçue pour recevoir au moins une bobine 2 de gaine d'emballage thermoscellable, telle que décrite dans le brevet FR 2 775 252. A cette fin, la dérouleuse 1 comprend un corps 3 pourvu, notamment, de moyens 4 de support d'au moins une bobine 2 de gaine d'emballage. Le corps 3 est, par ailleurs, équipé d'une tête 5 de sortie de la gaine et de moyens 6 de guidage de la gaine entre la bobine 2 et la tête de sortie 5.As is more particularly apparent from FIGS. 1 and 2 , an unwinder according to the invention, generally designated by reference 1, is designed to receive at least one coil 2 of heat-sealable packaging sheath, as described in patent FR 2 775 252. For this purpose , the unroller 1 comprises a body 3 provided, in particular, means 4 for supporting at least one coil 2 of packaging sheath. The body 3 is, moreover, equipped with an outlet head 5 of the sheath and means 6 for guiding the sheath between the coil 2 and the outlet head 5 .

Selon l'exemple illustré, les moyens 4 de support de la bobine 2 sont formés par un axe 8 destiné à passer par le centre de la bobine et à venir reposer dans deux berceaux 9 aménagés dans le corps 3 de la dérouleuse 1. Bien entendu, les moyens de support 4 pourraient être réalisés d'une toute autre manière, telle que, par exemple, sous la forme de deux rouleaux sur lesquels la bobine 2 viendrait reposer en appui sur sa surface extérieure.According to the illustrated example, the support means 4 of the coil 2 are formed by an axis 8 intended to pass through the center of the coil and come to rest in two cradles 9 arranged in the body 3 of the unroller 1 . Of course, the support means 4 could be made in another way, such as, for example, in the form of two rollers on which the coil 2 would rest resting on its outer surface.

La tête de sortie 5 comprend au moins une fenêtre 10 pour la sortie de la gaine 11 en provenance de la bobine 2, comme cela apparaítra par la suite. La tête 5 comprend, également, des moyens 15 de coupe de la gaine 11, ainsi que des moyens 16 de soudage de la gaine 11. The output head 5 comprises at least one window 10 for the output of the sheath 11 from the coil 2 , as will appear thereafter. The head 5 also comprises means 15 for cutting the sheath 11 , as well as means 16 for welding the sheath 11.

Pour des raisons qui ressortiront de la suite, les moyens de coupe 15 sont, de préférence mais non exclusivement, placés en amont des moyens de soudage 16 par rapport au sens de déroulement de la gaine 11, tel qu'indiqué par la flèche F1 .For reasons which will emerge from the following, the cutting means 15 are, preferably but not exclusively, placed upstream of the welding means 16 with respect to the direction of unwinding of the sheath 11, as indicated by the arrow F 1 .

Selon l'exemple illustré, les moyens de coupe 15 comprennent un couteau mobile 20, porté par un bras 21 oscillant autour d'un axe horizontal 211. Le couteau 20, d'une longueur supérieure ou égale à la largeur de la gaine d'emballage 11, est destiné à coopérer avec une gorge de coupe 22 fixe de longueur sensiblement égale à celle du couteau 20. Ainsi, le couteau 20 et la gorge 22 forment une sorte de mâchoire, susceptible d'être ouverte ou fermée par les mouvements du bras oscillant 21 qui porte ainsi une partie des moyens de coupe 15. Il est à noter que, de manière préférée, le bras 21 est asservi en ouverture par des moyens de rappel élastique, de façon à être maintenu en position ouverte A, telle qu'illustrée à la fig. 1. According to the illustrated example, the cutting means 15 comprise a movable knife 20 carried by an arm 21 oscillating about a horizontal axis 21 1 . The knife 20 , of a length greater than or equal to the width of the packaging sheath 11 , is intended to cooperate with a fixed cutting groove 22 of length substantially equal to that of the knife 20 . Thus, the knife 20 and the groove 22 form a kind of jaw, capable of being opened or closed by the movements of the oscillating arm 21 which thus carries part of the cutting means 15. It should be noted that, preferably, the arm 21 is slaved in opening by elastic return means, so as to be held in the open position A , as illustrated in FIG. 1.

De la même manière, les moyens de soudage 16 comprennent une barre chauffante 25 montée solidaire du bras oscillant 21. La barre chauffante 25 est destinée à coopérer avec une contre-barre 26 pour presser un élément ou une partie de la gaine 11 à souder. La barre chauffante 25 et la contre-barre 26 présentent une longueur supérieure ou égale à la largeur de la gaine d'emballage 11. Selon l'exemple illustré, la barre chauffante 25 est mobile, tandis que la contre-barre 26 est fixe. Ainsi, le bras oscillant 21 porte une partie des moyens de soudage 16. Bien entendu, il pourrait être envisagé d'inverser les positions de ces deux éléments.In the same way, the welding means 16 comprise a heating bar 25 mounted integral with the oscillating arm 21. The heating bar 25 is intended to cooperate with a counter bar 26 for pressing an element or part of the sheath 11 to be welded. The heating bar 25 and the counter bar 26 have a length greater than or equal to the width of the packaging sheath 11. In the example shown, the heating bar 25 is movable, while the counter bar 26 is fixed. Thus, the oscillating arm 21 carries part of the welding means 16. Of course, it could be envisaged to invert the positions of these two elements.

Il est à noter que le couteau 20 et la gorge 22, ainsi que la barre 25 et la contre-barre 26 sont disposés sensiblement transversalement à la gaine 11 et, plus particulièrement, à sa direction de déroulement F1. It should be noted that the knife 20 and the groove 22, as well as the bar 25 and the counter bar 26 are arranged substantially transversely to the sheath 11 and, more particularly, to its unwinding direction F 1 .

Enfin, la dérouleuse 5 comprend des moyens 6 de guidage de la gaine 11 entre la bobine 2 et la tête de sortie 5, adaptés pour, de préférence mais non exclusivement, amener la gaine 11 jusqu'en aval des moyens de coupe 15, par rapport au sens de déroulement F1 et à diriger la gaine 11 vers la fenêtre de sortie 10. Finally, the unwinder 5 comprises means 6 for guiding the sheath 11 between the spool 2 and the outlet head 5 , adapted to, preferably but not exclusively, bring the sheath 11 downstream of the cutting means 15 , by in relation to the unwinding direction F 1 and directing the sheath 11 towards the exit window 10.

Les moyens de guidage 6 comprennent, tout d'abord, un rouleau de guidage 30 et un rouleau presseur 31 entre lesquels la gaine d'emballage 11 est destinée à passer comme cela ressort en traits mixtes sur les fig. 1 et 3. Les moyens de guidage 6 comprennent, en outre, des moyens d'entraínement 32 du rouleau de guidage 30, de manière à assurer une avance ou un déroulement de la gaine 11 par une mise en rotation du rouleau 30. Selon l'exemple illustré, les moyens d'entraínement sont constitués par une poignée 32 solidaire du rouleau 30 et accessible depuis l'extérieur du corps 3 de la dérouleuse 1.The guiding means 6 comprise, first of all, a guide roller 30 and a pressure roller 31 between which the packaging sheath 11 is intended to pass as shown in phantom in FIGS. 1 and 3 . The guiding means 6 further comprise driving means 32 of the guide roller 30, so as to ensure that the sheath 11 advances or unwinds by rotating the roller 30. According to the illustrated example, the drive means are constituted by a handle 32 secured to the roll 30 and accessible from outside the body 3 of the unroller 1 .

Bien entendu, les moyens d'entraínement 32 pourraient être réalisés sous une toute autre forme qu'une poignée, telle que, par exemple mais non exclusivement, sous la forme d'un moteur asservi de manière à fonctionner automatiquement ou être commandé par un interrupteur accessible depuis l'extérieur du corps 3. De même, les moyens 32 pourraient assurer un entraínement en rotation du seul rouleau presseur 31 ou des deux rouleaux de guidage 30 et presseur 31 simultanément.Of course, the drive means 32 could be made in a form other than a handle, such as, for example but not exclusively, in the form of a motor controlled so as to operate automatically or be controlled by a switch accessible from outside the body 3 . Similarly, the means 32 could provide a rotational drive of the only pressure roller 31 or two guide rollers 30 and presser 31 simultaneously.

Les moyens de guidage 6 comprennent, également, au moins une plaque de guidage 33 qui s'étend en amont et en aval, par rapport au sens de déroulement F1 des rouleaux de guidage 30 et presseur 31. Cette plaque de guidage 33 est adaptée pour guider la gaine avant et après les rouleaux 30 et 31, ainsi que lors de son introduction initiale entre les rouleaux 30 et 31.The guiding means 6 also comprise at least one guiding plate 33 which extends upstream and downstream with respect to the unfolding direction F 1 of the guiding rollers 30 and pressing roller 31 . This guide plate 33 is adapted to guide the sheath before and after the rollers 30 and 31 , as well as during its initial introduction between the rollers 30 and 31 .

Il est à noter que, selon l'exemple illustré, la plaque de guidage 33 est courbée et forme un angle juste avant le rouleau de guidage 30. La plaque 33 délimite ainsi, avec le rouleau de guidage 30, une zone d'introduction 34 qui forme une sorte d'entonnoir dans lequel l'extrémité de la gaine 11 est introduite lors de la mise en place initiale de la bobine 2. It should be noted that, according to the illustrated example, the guide plate 33 is curved and forms an angle just before the guide roller 30. The plate 33 thus defines, with the guide roller 30, an introduction zone 34 which forms a kind of funnel in which the end of the sheath 11 is introduced during the initial setting up of the coil 2.

Selon une caractéristique préférée de l'invention, la plaque de guidage 33 s'étend entre les rouleaux de guidage 30 et presseur 31. Afin que les rouleaux 30 et 31 assurent leur fonction de guidage et d'entraínement, la plaque 33 définit, alors, au moins une zone 35 dans laquelle les rouleaux presseur 31 et de guidage 30 peuvent guider et presser simultanément la gaine 11.According to a preferred feature of the invention, the guide plate 33 extends between the guide rollers 30 and presser 31. In order that the rollers 30 and 31 ensure their guiding function and drive the plate 33 defines, then at least one zone 35 in which the pressure roller 31 and guide roller 30 can simultaneously guide and press the sheath 11 .

Selon l'exemple illustré, la plaque 33 définit deux zones 35 latérales de guidage de la gaine 11 entre les rouleaux 30 et 31. Le rouleau de guidage 30 présente alors un évidemment central 36 pour le passage de la plaque 33 et, de part et d'autre de cet évidemment 36, un épaulement 37 destiné à coopérer avec le rouleau presseur 31 pour assurer le guidage et l'entraínement de la gaine 11. According to the illustrated example, the plate 33 defines two lateral zones 35 for guiding the sheath 11 between the rollers 30 and 31 . The guide roller 30 then has a central recess 36 for the passage of the plate 33 and, on either side of this recess 36, a shoulder 37 intended to cooperate with the pressure roller 31 to provide guidance and training sheath 11.

La dérouleuse conforme à l'invention ainsi constituée est mise en oeuvre de la manière suivante.The unroller according to the invention thus constituted is used as follows.

Tout d'abord, la bobine 2 est mise en place, puis la gaine 11 est passée entre les rouleaux 30 et 31 par un utilisateur ou opérateur. Pour ce faire, l'utilisateur vient appliquer la gaine 11 contre la plaque 33 en la faisant avancer jusqu'au rouleau 30. La forme d'entonnoir de la zone d'introduction 34 facilite alors la prise en charge de la gaine 11 par les rouleaux de guidage 30 et presseur 31. First, the spool 2 is put in place, then the sheath 11 is passed between the rollers 30 and 31 by a user or operator. To do this, the user just applies the sheath 11 against the plate 33 by advancing to the roller 30. The funnel shape of the introduction zone 34 then facilitates the management of the sheath 11 by the guide rollers 30 and presser 31.

L'utilisateur actionne ensuite les moyens de manoeuvre 32, de manière à faire progresser la gaine 11 entre les éléments constitutifs des moyens de coupe 15 et de soudage 16, jusqu'à la fenêtre de sortie 10, à partir de laquelle la gaine peut être directement tirée à la main par l'utilisateur.The user then actuates the actuating means 32 so as to advance the sheath 11 between the elements of the cutting means 15 and welding 16, to the exit window 10, from which the sheath may be directly pulled by hand by the user.

Lorsque l'utilisateur souhaite réaliser un emballage à partir de la gaine 11, il tire une longueur de gaine en rapport avec les dimensions du produit à conditionner. L'opérateur utilise alors, en tant que moyen de manoeuvre simultané des moyens de coupe 15 et de soudage 16, une poignée 40 réalisée à l'extrémité du bras oscillant 21 et que l'opérateur abaisse selon le sens de la flèche F2. Dans cette position de travail B illustrée à la Fig. 3 la dérouleuse 1, d'une part, coupe la gaine 11 avec le couteau 20 et, d'autre part, scelle avec l'élément chauffant 16 l'extrémité de l'élément de gaine découpé. L'élément chauffant 16 est maintenu à une température correspondant à la température de fusion de l'un des constituants au moins de la gaine, par un système de régulation n'entrant pas dans le cadre de la présente invention.When the user wishes to make a package from the sheath 11, he draws a sheath length in relation to the dimensions of the product to be packaged. The operator then uses, as simultaneous maneuvering means 15 for cutting and welding 16, a handle 40 made at the end of the oscillating arm 21 and that the operator lowers in the direction of the arrow F 2 . In this working position B illustrated in FIG. 3 the unroller 1 , on the one hand, cuts the sheath 11 with the knife 20 and, on the other hand, seals with the heating element 16 the end of the cut sheath element. The heating element 16 is maintained at a temperature corresponding to the melting temperature of at least one constituent of the sheath, by a control system not falling within the scope of the present invention.

Avec la dérouleuse 1 selon l'invention, l'opérateur a ainsi réalisé à partir de la gaine 11 et par une unique manoeuvre du bras oscillant 21, une sorte de sachet ouvert sur un seul côté, par lequel il est possible d'introduire un produit à emballer. With the unrolling machine 1 according to the invention, the operator thus made from the sheath 11 and by a single operation of the oscillating arm 21 , a kind of bag open on one side, by which it is possible to introduce a product to be packaged.

Une fois le produit à l'intérieur de ce sachet, l'opérateur peut réintroduire l'extrémité non fermée du sachet dans la fenêtre 10, de manière à venir placer cette extrémité ouverte au niveau des moyens de soudage 16. Ensuite, par une nouvelle action sur la poignée 40 dans le sens de la flèche F2, l'utilisateur soude le quatrième côté du sachet et conditionne, de manière sensiblement étanche, le produit placé à l'intérieur de l'emballage obtenu à partir de la gaine 11. Ainsi, compte-tenu du positionnement des moyens de soudage 16 en aval des moyens de coupe 15 par rapport au sens F1 de déroulage de la gaine, il est possible de souder une partie de l'emballage introduit à partir de l'extérieur de la tête 5.Once the product inside this bag, the operator can reintroduce the unsealed end of the bag into the window 10, so as to place this open end at the welding means 16. Then, by a new action on the handle 40 in the direction of the arrow F 2 , the user welds the fourth side of the bag and conditions, in a substantially sealed manner, the product placed inside the package obtained from the sheath 11 . Thus, given the positioning of the welding means 16 downstream of the cutting means 15 with respect to the unwinding direction F 1 of the sheath, it is possible to weld a portion of the packaging introduced from the outside of the the head 5 .

Selon une première forme préférée de réalisation de la dérouleuse conforme à l'invention, afin d'éviter que l'extrémité de l'élément de gaine réintroduit dans la tête 5 ne vienne endommager l'extrémité ou le bord 42 de la gaine issue de la bobine et situé au niveau des moyens de coupe 15, la tête de sortie 5 comprend une deuxième fenêtre 41, dite de soudage, disposée au-dessus de la fenêtre de sortie 10. Cette fenêtre de soudage 41 est adaptée pour autoriser une introduction, à partir de l'extérieur de la tête, de la partie de l'emballage destinée à être fermée par les moyens de soudage 16. According to a first preferred embodiment of the unrolling machine according to the invention, in order to prevent the end of the sheath element reintroduced into the head 5 from damaging the end or the edge 42 of the sheath resulting from the coil and located at the level of the cutting means 15, the output head 5 comprises a second window 41 , said welding, disposed above the exit window 10. This welding window 41 is adapted to allow an introduction, from the outside of the head, of the part of the packaging intended to be closed by the welding means 16.

Ainsi, lors de l'introduction de l'emballage à fermer dans la fenêtre de soudage 41, son extrémité se trouve au-dessus de l'extrémité 42 de la gaine 11 issue de la bobine 2 et ne peut donc venir l'endommager ou la repousser, avant ou pendant l'opération de soudage.Thus, during the introduction of the package to close in the welding window 41, its end is above the end 42 of the sheath 11 from the coil 2 and can not come to damage or push it back, before or during the welding operation.

Les fig. 5 et 6 illustrent une deuxième variante de réalisation de la dérouleuse conforme à l'invention qui diffère de la variante de réalisation décrite en relation avec les fig. 1 à 4 en ce que la tête de coupe 5 comprend une bavette anti-retour 55 placée entre les moyens de coupe 15 et les moyens de soudage 16. Une extrémité de cette bavette 55 est, de préférence, fixée sur le bras 21 entre le couteau 20 et la barre de soudage 25, tandis que l'autre extrémité s'étend jusqu'à la fenêtre 10, comme le montre la fig. 5. La bavette 55 s'étend ainsi par son propre poids au niveau de la partie inférieure de la fenêtre de sortie 10. Bien entendu, il peut être envisagé de monter la bavette 55 entre la gorge de coupe 22 et la contre-barre 26. La bavette 55 est réalisée dans un matériau souple qui présente une température de fusion supérieure à la température de soudage de la gaine 11, de manière à ne pas être altérée par les moyens de soudage 15. Figs. 5 and 6 illustrate a second alternative embodiment of the unroller according to the invention which differs from the embodiment variant described in relation with FIGS. 1 to 4 in that the cutting head 5 comprises a non-return flap 55 placed between the cutting means 15 and the welding means 16 . One end of this flap 55 is preferably attached to the arm 21 between the knife 20 and the welding bar 25, while the other end extends to the window 10, as shown in FIG. 5. The flap 55 thus extends by its own weight at the lower part of the exit window 10. Of course, it can be envisaged to mount the flap 55 between the cutting groove 22 and the counter-bar 26 . The flap 55 is made of a flexible material which has a melting temperature higher than the welding temperature of the sheath 11 , so as not to be altered by the welding means 15.

La bavette 55 assure une fonction anti-retour pour empêcher l'accès aux moyens de coupe 15 à partir de l'extérieur de la tête 5 par la fenêtre de sortie 10. En effet, compte tenu de la position de la bavette anti-retour 55, la gaine 11, en provenance de la bobine 2, sort de la fenêtre 10 en passant en dessous de la bavette 55 qui contribue alors au guidage de la gaine 11 jusqu'à la fenêtre 10. The flap 55 provides a non-return function to prevent access to the cutting means 15 from the outside of the head 5 by the exit window 10 . Indeed, given the position of the non-return flap 55, the sheath 11, from the coil 2 , out of the window 10 passing below the flap 55 which then contributes to the guiding of the sheath 11 until at the window 10.

En revanche, lorsqu'une extrémité de gaine à souder est réintroduite par la fenêtre 10, la bavette 55 limite cette introduction, de sorte que l'extrémité de la gaine ne peut être réintroduite dans la tête 5 que jusqu'au niveau des moyens de soudage 16. De cette manière, la bavette 55 empêche que la partie réintroduite de la gaine ne soit recoupée par les moyens de coupe 15 et évite ainsi la formation de déchets qui seraient susceptibles d'entraíner un bourrage de la rainure 22. On the other hand, when a end of the welding sleeve is reintroduced by the window 10, the flap 55 limits this introduction, so that the end of the sheath can be reintroduced into the head 5 only up to the level of the means of welding 16 . In this way, the flap 55 prevents the reintroduced part of the sheath from being cut by the cutting means 15 and thus prevents the formation of waste which could cause a jamming of the groove 22.

Il est à noter que la bavette anti-retour 55 est réalisée dans un matériau qui n'altère pas l'efficacité des moyens de soudage 16, de sorte que la gaine en provenance de la bobine 2 est parfaitement soudée lorsqu'elle se trouve pressée entre la barre chauffante 25 et la contre-barre 26 avec interposition de la bavette 55 entre la gaine 11 et la barre 25. It should be noted that the non-return flap 55 is made of a material that does not affect the efficiency of the welding means 16 , so that the sheath coming from the spool 2 is perfectly welded when it is pressed. between the heating bar 25 and the counter bar 26 with the interposition of the flap 55 between the sheath 11 and the bar 25.

Compte tenu de la présence de la bavette anti-retour 55, il n'est alors plus nécessaire de prévoir, au niveau de la tête 5, une deuxième fenêtre, dite de soudage, située au-dessus de la fenêtre de sortie 10 comme illustré dans la première variante de réalisation.Given the presence of the non-return flap 55, it is no longer necessary to provide, at the head 5 , a second window, called welding, located above the exit window 10 as illustrated in the first embodiment.

Selon une forme préférée mais non exclusive de réalisation de l'invention, la tête de sortie 5 est amovible et le corps 3 présente des moyens de fixation de la tête 5 adaptés pour autoriser un montage de la tête selon au moins deux orientations distinctes. Ainsi, selon les exemples illustrés aux fig. 1 et 4, la tête 5 peut être adaptée sur le corps 3, de manière que la bobine 2 soit placée en dessous de la tête, comme cela ressort de la fig. 1 ou, au-dessus de la tête 5, comme le montre la fig. 4. Les moyens de fixation de la tête 5 sur le corps 3 peuvent être, par exemple, constitués par des vis, non représentées, destinées à passer dans des perçages complémentaires 45 et 46 aménagés, respectivement, sur le corps 3 et la tête 5. According to a preferred but non-exclusive embodiment of the invention, the output head 5 is removable and the body 3 has fastening means of the head 5 adapted to allow mounting of the head in at least two distinct orientations. Thus, according to the examples illustrated in FIGS. 1 and 4 , the head 5 can be fitted on the body 3 , so that the coil 2 is placed below the head, as shown in FIG. 1 or, above the head 5 , as shown in FIG. 4 . The fixing means of the head 5 on the body 3 may be, for example, constituted by screws, not shown, intended to pass through complementary bores 45 and 46 arranged respectively on the body 3 and the head 5 .

Cette faculté de montage de la tête de sortie 5 selon deux orientations distinctes permet alors de configurer la dérouleuse conforme à l'invention selon l'endroit où elle doit être utilisée.This ability to mount the output head 5 in two different orientations then allows to configure the unroller according to the invention according to where it should be used.

Ainsi, lorsque la bobine est placée en dessous de la tête 5, comme illustré à la fig. 1, la dérouleuse 1 peut être fixée en applique sur un support S, tel qu'un mur ou la partie basse d'une paillasse. A cette fin, le corps 3 comprend des moyens, non représentés, de fixation ou d'accrochage au support.Thus, when the coil is placed below the head 5 , as shown in FIG. 1, the unroller 1 can be fixed on a wall bracket S , such as a wall or the lower part of a bench. For this purpose, the body 3 comprises means, not shown, for fixing or hanging on the support.

Lorsque la dérouleuse 1 est dans la configuration représentée à la fig. 4, la bobine étant placée au-dessus de la tête 5, il est possible de poser la dérouleuse sur une paillasse ou une table P, le corps 3 étant alors pourvu de pieds 47. When the unroller 1 is in the configuration shown in FIG. 4, the coil being placed above the head 5, it is possible to place the unroller on a bench or a table P , the body 3 then being provided with feet 47.

Afin d'assurer un guidage optimal de la gaine 11, quelle que soit l'orientation d'installation de la dérouleuse 1, les moyens de guidage 6 comprennent, en aval du rouleau de guidage 30, dans le sens de déroulement F1 de la gaine 11, un tunnel 50 assurant un guidage de la gaine à l'intérieur de la tête 5, jusqu'en amont des moyens de coupe 15 ou de soudage 16.In order to ensure optimum guidance of the sheath 11, whatever the installation orientation of the unwinder 1 , the guiding means 6 comprise, downstream of the guide roller 30, in the unwinding direction F 1 of the sheath 11, a tunnel 50 guiding the sheath inside the head 5 , upstream of the cutting means 15 or welding 16 .

De manière préférée, afin de faciliter l'introduction initiale de la gaine, le tunnel 50 présente à son extrémité orientée vers les rouleaux 30, 31 une zone d'entrée 51 évasée, comme le montre plus particulièrement la fig. 1. Preferably, in order to facilitate the initial introduction of the sheath, the tunnel 50 has at its end facing the rollers 30, 31 an inlet zone 51 flared, as shown more particularly in FIG. 1.

Le tunnel 50 définit de manière avantageuse, quelle que soit l'orientation du corps 3, une surface d'appui et de guidage pour la gaine 11 et guide la gaine de manière à la diriger vers la fenêtre de sortie 10 de la tête de sortie 5.The tunnel 50 advantageously defines, whatever the orientation of the body 3, a bearing and guiding surface for the sheath 11 and guides the sheath so as to direct it towards the outlet window 10 of the exit head 5 .

Lorsque la tête 5 est démontable, les moyens de guidage 6, et notamment le tunnel 50, sont solidaires du corps 3. De plus, le tunnel 50 est adapté pour s'étendre alors à l'intérieur de la tête de sortie 5 jusqu'au plus près possible des moyens de coupe 15. When the head 5 is removable, the guide means 6 , and in particular the tunnel 50, are integral with the body 3 . In addition, the tunnel 50 is adapted to then extend inside the outlet head 5 as close as possible to the cutting means 15.

Selon les exemples illustrés précédemment, les moyens de guidage, et plus particulièrement la plaque 33 et les rouleaux 30 et 31, sont adaptés pour faire effectuer à la gaine 11 un trajet en angle, de manière à réduire, autant que faire se peut, l'encombrement total de la dérouleuse 1. Bien entendu, le trajet de la gaine pourrait aussi être rectiligne. According to the examples illustrated above, the guide means, and more particularly the plate 33 and the rollers 30 and 31, are adapted to make the sheath 11 take an angle path, so as to reduce, as far as possible, the Overall dimensions of the unroller 1. Of course, the path of the sheath could also be rectilinear.

Selon les exemples illustrés précédemment, la tête de sortie 5 est amovible. Bien entendu, il pourrait être envisagé que la tête de sortie soit solidaire du corps 3 sans être démontable.According to the examples illustrated above, the output head 5 is removable. Of course, it could be envisaged that the output head is integral with the body 3 without being removable.

De même, le tunnel de guidage 50 est mis en oeuvre, de préférence lorsque la tête est démontable, mais il pourrait être envisagé d'utiliser un tel tunnel de guidage pour une dérouleuse conforme à l'invention n'ayant pas de tête de sortie démontable.Similarly, the guide tunnel 50 is implemented, preferably when the head is removable, but it could be envisaged to use such a guide tunnel for a unrolling machine according to the invention having no output head removable.

Selon les exemples illustrés les moyens 40 de manoeuvre simultanée des moyens de coupe 15 et de soudage 16 sont formés par une poignée et un bras oscillant. Toutefois, ces moyens de manoeuvre 40 pourraient être réalisés d'une toute autre manière et pourraient par exemple être motorisés.According to the illustrated examples the means 40 for simultaneous operation of the cutting means 15 and welding 16 are formed by a handle and an oscillating arm. However, these operating means 40 could be made in another way and could for example be motorized.

L'invention n'est pas limitée aux exemples décrits et représentés car diverses modifications peuvent y être apportées sans sortir de son cadre.The invention is not limited to the examples described and represented because various modifications can be made without departing from its scope.

Claims (14)

  1. A paying out device for a roll of heat-weld packing sheath (11) consisting of a body (3) provided more particularly with:
    supporting means (4) for at least one roll (2) of packing sheath (11),
    a sheath exit head (5) including:
    at least one sheath exit window (10),
    sheath cutting means (15),
    sheath welding means (16),
    sheath guiding means (6) between roll (2) and exit head (5),
    characterized in that exit head (5) includes means (40) of simultaneously maneuvering cutting means (15) and welding means (16), formed by a handle and an oscillating arm (21) supporting a pair of cutting means (15) and welding means (16).
  2. A paying out device according to claim 1 characterized in that welding means (16) are arranged downstream of cutting means (15) with respect to the sheath paying out direction F1 to allow the welding of at least part of the package inserted from the outside of head (5).
  3. A paying out device according to claim 2, characterized in that exit head (5) includes a second window (41) referred to as the welding window, adjusted to allow, from outside of head (5) introduction of at least part of a package to be welded by welding means (16).
  4. A paying out device according to claim 2, characterized in that exit head (5) includes a non-return flap (55) placed between cutting means (15) and welding means (16), designed to prevent access to cutting means (15) from outside of the head through exit window (10).
  5. A paying out device according to claim 4 characterized in that nonreturn flap (55) extends as far as window (10).
  6. A paying out device according to claims 4 or 5, characterized in that the nonreturn flap (55) is made of flexible material having a fusion temperature higher than the sheath welding temperature.
  7. A paying out device according to claim 1, characterized in that exit head (5) is removable and in that body (3), includes means (45) of attaching head (5) adapted to permit the assembly of head (5) in at least two different directions.
  8. A paying out device according to claim 1, characterized in that cutting means (15) include a mobile knife (20), with length equal to or greater than the width of packing sheath (11), designed to work together with a fixed cutting groove (22).
  9. A paying out device according to claim 1, characterized in that welding means (16) include a heating bar (25) and a counter bar (26) between which an element to be welded is required to be pressed.
  10. A paying out device according to claim 1, characterized in that the sheath guidance means (6) include:
    a guide roller (30) and a pressure roller (31) between which packing sheath (11) is intended to run,
    driving means (32) turning guide roller (30) and/or pressure roller (31),
    and at least one guide plate (33) extending from upstream and downstream of the guide roller (30) and pressure roller (31), matching them to guide sheath (11) before and after rollers (30, 31) and to guide sheath (11) when it is initially inserted between the rollers.
  11. A paying out device according to claim 10, characterized in that guide plate (33) extends between guide roller ( 30) and pressure roller (31) defining at least one area (35) in which guide roller and pressure roller can work together simultaneously with sheath (11).
  12. A paying out device according to claim 10 or 11 characterized in that guide means (6) include, downstream of guide roller (30) in the sheath paying-out direction F2, a tunnel (50) guiding the sheath inside exit head (5) to the upstream side of cutting means (15) or welding means (16).
  13. A paying out device according to claim 12, characterized in that the guiding tunnel has a flared entry area (51)
  14. A paying out device according to claim 12 or 13, characterized in that the tunnel (50) guides the sheath so as to direct it toward exit window (10) of exit head (5).
EP01913948A 2000-03-07 2001-03-07 Feed roll for package tubing equipped with cutting and sealing means Expired - Lifetime EP1274625B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR0002908 2000-03-07
FR0002908A FR2806058B1 (en) 2000-03-07 2000-03-07 UNWINDER FOR PACKAGING SHEATH EQUIPPED WITH CUTTING AND WELDING MEANS
FR0005965A FR2806059B1 (en) 2000-03-07 2000-05-10 UNWINDING MACHINE FOR PACKAGING SHEATH EQUIPPED WITH CUTTING AND WELDING MEANS AND AN ANTI-RETURN GUARD
FR0005965 2000-05-10
PCT/FR2001/000678 WO2001066415A1 (en) 2000-03-07 2001-03-07 Feed roll for package tubing equipped with cutting and sealing means

Publications (2)

Publication Number Publication Date
EP1274625A1 EP1274625A1 (en) 2003-01-15
EP1274625B1 true EP1274625B1 (en) 2004-08-04

Family

ID=26212236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01913948A Expired - Lifetime EP1274625B1 (en) 2000-03-07 2001-03-07 Feed roll for package tubing equipped with cutting and sealing means

Country Status (9)

Country Link
US (1) US7000369B1 (en)
EP (1) EP1274625B1 (en)
AT (1) ATE272538T1 (en)
AU (1) AU3935101A (en)
CA (1) CA2402005A1 (en)
DE (1) DE60104668T2 (en)
ES (1) ES2225498T3 (en)
FR (1) FR2806059B1 (en)
WO (1) WO2001066415A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20060259A1 (en) * 2006-02-14 2007-08-15 Italdibipack Spa CAMPABNA MACHINE FOR PACKAGING PRODUCTS WITH A MONOPIEGA THERMORETRABLE FILM
US9422073B2 (en) * 2011-04-12 2016-08-23 Sunbeam Products, Inc. Vacuum packaging appliance with roll storage
CA2839739C (en) * 2011-06-17 2017-05-16 Sunbeam Products, Inc. Vacuum packaging appliance
US10858129B2 (en) * 2015-06-05 2020-12-08 Sunbeam Products, Inc. Food storage appliance
US10717558B2 (en) 2016-10-17 2020-07-21 Morrisette Paper Company, Inc. Machine and process for packaging unique items

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US2679280A (en) * 1952-04-24 1954-05-25 Production Inc Plastic bag sealing and cutting machine
US3035381A (en) * 1959-01-09 1962-05-22 George A Hosso Plastic bag sealer
US3239993A (en) * 1961-11-15 1966-03-15 Sam Cherrin Apparatus for forming plastic bags
US3367085A (en) * 1965-09-21 1968-02-06 Crown Zellerbach Corp Apparatus and process for closing bag and forming a handle therefor
US3764434A (en) * 1968-11-29 1973-10-09 Phillips Petroleum Co Bag forming machine
ES387082A1 (en) * 1970-04-10 1973-12-01 Calor Sa Apparatus for welding thin-sheet plastics materials
US3753829A (en) * 1971-12-06 1973-08-21 M Freeman Plastic bag fabricating, dispensing and sealing unit
JPS5832102B2 (en) * 1975-12-06 1983-07-11 クスミデンキ カブシキガイシヤ heat seal couch
US4093500A (en) * 1977-03-28 1978-06-06 Lehigh Valley Industries, Inc. Bag forming apparatus
US4156382A (en) * 1977-12-20 1979-05-29 General Electric Company Bag sealer and cutter assembly
IE50192B1 (en) * 1979-09-14 1986-03-05 Grace W R & Co Process and apparatus for packing commodities in bags of heat-sealable plastics material
US4941310A (en) * 1989-03-31 1990-07-17 Tillia Aktiengesellschaft Apparatus for vacuum sealing plastic bags
US5618252A (en) * 1991-07-26 1997-04-08 Machinery Developments Limited Packaging apparatus
GB2275442A (en) * 1993-02-25 1994-08-31 Kwonnie Electrical Products Lt Vacuum sealing plastics bags
WO1994022723A1 (en) * 1993-03-26 1994-10-13 Machinery Developments Limited Packaging apparatus
US5682727A (en) * 1996-05-03 1997-11-04 Koch Supplies, Inc. Coupled cutting blade and heat element for use with vacuum packaging machinery
FR2775252B1 (en) 1998-02-26 2000-04-07 Papiers A Paviot PACKAGING PROCESS, ESPECIALLY FOR RETAIL FOOD PRODUCTS, AND PACKAGING THEREOF
US6256968B1 (en) * 1999-04-13 2001-07-10 Tilia International Volumetric vacuum control

Also Published As

Publication number Publication date
DE60104668D1 (en) 2004-09-09
US7000369B1 (en) 2006-02-21
EP1274625A1 (en) 2003-01-15
ATE272538T1 (en) 2004-08-15
FR2806059A1 (en) 2001-09-14
CA2402005A1 (en) 2001-09-13
DE60104668T2 (en) 2005-08-11
FR2806059B1 (en) 2003-04-18
ES2225498T3 (en) 2005-03-16
WO2001066415A1 (en) 2001-09-13
AU3935101A (en) 2001-09-17

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