FR2725398A1 - Hot sealing appts. for envelope precoated with strips of adhesive - Google Patents

Hot sealing appts. for envelope precoated with strips of adhesive Download PDF

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Publication number
FR2725398A1
FR2725398A1 FR9411989A FR9411989A FR2725398A1 FR 2725398 A1 FR2725398 A1 FR 2725398A1 FR 9411989 A FR9411989 A FR 9411989A FR 9411989 A FR9411989 A FR 9411989A FR 2725398 A1 FR2725398 A1 FR 2725398A1
Authority
FR
France
Prior art keywords
cylinders
heating
cylinder
core
envelope
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.)
Granted
Application number
FR9411989A
Other languages
French (fr)
Other versions
FR2725398B1 (en
Inventor
Andre Zeller
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.)
Danel Ferry SA
Original Assignee
Danel Ferry SA
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 Danel Ferry SA filed Critical Danel Ferry SA
Priority to FR9411989A priority Critical patent/FR2725398B1/en
Priority to ES09502886U priority patent/ES1032494Y/en
Publication of FR2725398A1 publication Critical patent/FR2725398A1/en
Application granted granted Critical
Publication of FR2725398B1 publication Critical patent/FR2725398B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/62—Uniting opposed surfaces or edges; Taping by adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure

Abstract

The appts. has three identical pairs of cylinders (2,2') arranged in sequence in a thermally insulated enclosure in front of two pairs of smaller pressure rollers. Each envelope in turn is propelled (F) between the cylinders which rotate (9,12) in opposite directions. The upper cylinder (2) has a fixed core (7) of e.g., Al in a freely rotating sleeve (8) of e.g, steel. Three cylindrical bores (10) through the core contain electric resistance heating elements (11). The lower cylinder (2') has a silicon covering to ensure better distribution of pressure over an envelope having e.g. a thicker centre.

Description

L'invention concerne un appareil de scellage à chaud pour documents. The invention relates to a heat sealing apparatus for documents.

Pour sceller divers documents tels que des "mailers" ou des envelopppes, les zones à sceller sont généralement recouvertes d'un adhésif activabble à chaud et on fait défiler les documents dans un appareil ou une station dite de scellage. To seal various documents such as "mailers" or envelopes, the areas to be sealed are generally covered with a hot-activable adhesive and the documents are scrolled through an apparatus or a so-called sealing station.

I1 existe plusieurs types de tels appareils. There are several types of such devices.

On connait par exemple l'appareil décrit dans le brevet Européen 0185811 qui comporte une série de cylindres ou rouleaux qui sont alternés avec des moyens de chauffage et qui sont suivis par des moyens de pression. We know for example the apparatus described in European patent 0185811 which comprises a series of cylinders or rollers which are alternated with heating means and which are followed by pressure means.

On connait aussi un appareil qui comporte deux plaques d'aluminium chauffées entre lesquelles passent les documents qui sont tractés en sortie par au moins une paire de cylindres d'entrainement. Un tel système ntest utilisable qu'avec des documents présentés en continu pour une mise à l'unité ultérieure. There is also known an apparatus which comprises two heated aluminum plates between which pass the documents which are pulled out by at least one pair of drive cylinders. Such a system can only be used with documents presented continuously for subsequent unitization.

Un autre système de ce type comporte en outre des galets d'entrainement aménagés dans les plaques qui sont toujours les éléments chauffants, de telle sorte que les documents peuvent se présenter à l'unité ou en continu. Another system of this type further comprises drive rollers arranged in the plates which are always the heating elements, so that the documents can be presented individually or continuously.

On a aussi imaginé un dispositif dans lequel les galets précités ont été remplacés par des courroies mais un tel système subit des pertes importantes de chaleur. We have also imagined a device in which the aforementioned rollers have been replaced by belts, but such a system undergoes significant heat losses.

En outre, la plupart de ces appareils connus présentent l'inconvénient de ne pouvoir sceller que des documents de faible épaisseur ne comportant généralement que deux feuilles l'une sur l'autre. In addition, most of these known devices have the disadvantage of being able to seal only thin documents generally having only two sheets on top of each other.

Or dans certains cas, il est nécessaire de pouvoir sceller des documents de plus grande épaisseur, voire d'épaisseur inégalement répartie comme des enveloppes contenant un ou plusieurs inserts. However, in certain cases, it is necessary to be able to seal documents of greater thickness, or even of thickness unevenly distributed like envelopes containing one or more inserts.

On comprend aussi que dans tous ces dispositifs, les moyens d'entratnement sont distincts des moyens de chauffage. It is also understood that in all these devices, the drive means are distinct from the heating means.

L'inventeur a conçu un appareil comportant au moins une paire de cylindres entre lesquels sont introduits les documents qui sont pourvus de zones revêtues d'un adhésif activable à chaud, qui est notamment remarquable en ce qu'au moins l'un des cylindres comporte des moyens de chauffage. The inventor has designed an apparatus comprising at least one pair of cylinders between which are introduced the documents which are provided with zones coated with a hot-activatable adhesive, which is in particular remarkable in that at least one of the cylinders comprises heating means.

Selon un mode de réalisation avantageux, le cylindre chauffant est muni d'un noyau fixe chauffant entouré par une enveloppe tournante, le noyau fixe étant par exemple constitué d'une matière conductrice de la chaleur dans laquelle est logée au moins une résistance électrique chauffante et de préférence, ledit noyau comporte trois résistances cylindriques disposées longitudinalement et espacées angulairement de manière régulière. According to an advantageous embodiment, the heating cylinder is provided with a fixed heating core surrounded by a rotating envelope, the fixed core being for example made of a heat conducting material in which is housed at least one electric heating resistance and preferably, said core comprises three cylindrical resistors arranged longitudinally and angularly spaced regularly.

L'enveloppe tournante est par exemple constituée par un manchon conducteur de la chaleur, monté libre en rotation autour du noyau fixe. The rotating casing is for example constituted by a heat conducting sleeve, mounted to rotate freely around the fixed core.

Selon un mode de réalisation, l'enveloppe tournante du cylindre et l'autre cylindre de la paire, ou l'enveloppe tournante de ce dernier, sont en prise en rotation au moyen de pignons d'engrenage dont ils sont solidaires. According to one embodiment, the rotating envelope of the cylinder and the other cylinder of the pair, or the rotating envelope of the latter, are in rotation by means of gear pinions of which they are integral.

Dans le cas où un seul cylindre de chaque paire est chauffant, le cylindre non chauffant est avantageusement recouvert ou enduit au moins en partie de silicone. In the case where only one cylinder of each pair is heating, the non-heating cylinder is advantageously covered or coated at least in part with silicone.

Par exemple, le noyau fixe chauffant est en aluminium et 11 enveloppe tournante en acier. For example, the fixed heating core is made of aluminum and 11 rotating casing made of steel.

L'invention sera bien comprise à la lecture de la description qui va suivre et qui se réfère aux dessins annexés dans lesquels:
- la figure 1 schématise un appareil selon l'invention,
- la figure 2 montre plus en détail et avec arrachement une
paire de cylindres de l'appareil de la figure 1.The invention will be clearly understood on reading the description which follows and which refers to the appended drawings in which:
FIG. 1 shows diagrammatically an apparatus according to the invention,
- Figure 2 shows in more detail and with cutaway
pair of cylinders of the apparatus of figure 1.

L'appareil montré sur la figure 1 comporte une enceinte 1 thermiquement isolée dans laquelle sont aménagées ici trois paires identiques de cylindres 2, 2' de chauffage, suivies de 2 paires de cylindres 3, 3' de pression. The apparatus shown in FIG. 1 comprises a thermally insulated enclosure 1 in which three identical pairs of heating cylinders 2, 2 'are arranged here, followed by 2 pairs of pressure cylinders 3, 3'.

A l'entrée et à la sortie de l'enceinte 1, sont en outre représentées dans cet exemple, des paires de cylindres d'entrainement respectivement 4, 4' et 5, 5'. At the inlet and at the outlet of enclosure 1, in this example, pairs of drive cylinders 4, 4 'and 5, 5' are also shown.

On comprend que les cylindres 4, 4' sont prévus pour entrainer les documents à sceller, tels que 6 sur la figure 1, dans l'enceinte 1 et les cylindres 5, 5' à extraire lesdits documents, l'écartement de deux paires successives de cylindres étant calculé pour être inférieur au format desdits documents. It is understood that the cylinders 4, 4 ′ are provided for driving the documents to be sealed, such as 6 in FIG. 1, in enclosure 1 and the cylinders 5, 5 ′ for extracting said documents, the spacing of two successive pairs of cylinders being calculated to be smaller than the format of said documents.

Les cylindres 3, 3' sont, par exemple, en caoutchouc pour assurer un écrasement des documents après leur passage entre les paires de cylindres 2, 2'. The cylinders 3, 3 'are, for example, made of rubber to ensure that documents are overwritten after they have passed between the pairs of cylinders 2, 2'.

La figure 2 montre plus en détail une paire de cylindres 2, 2' entre lesquels passent les documents selon la flèche F. Figure 2 shows in more detail a pair of cylinders 2, 2 'between which pass the documents according to arrow F.

Le cylindre supérieur 2 est constitué par un noyau fixe 7, par exemple en aluminium, enveloppé par un manchon 8, par exemple en acier, monté libre en rotation. The upper cylinder 2 is constituted by a fixed core 7, for example made of aluminum, wrapped by a sleeve 8, for example made of steel, mounted free to rotate.

Au moins l'une des extrémités du mandon 8 est pourvue d'un pignon 9. At least one of the ends of the mandrel 8 is provided with a pinion 9.

Comme le montre bien la figure 2, dans le noyau 7, sont aménagés trois logements cylindriques 10 dans chacun desquels est disposée une résistance électrique comme la résistance 11 visible sur ladite figure. As FIG. 2 clearly shows, in the core 7, three cylindrical housings 10 are arranged in each of which is arranged an electrical resistance such as the resistance 11 visible in said figure.

Les logements 10 sont régulièrement répartis au voisinage de la périphérie du noyau 7. The housings 10 are regularly distributed in the vicinity of the periphery of the core 7.

Le cylindre inférieur 2', généralement creux, est également pourvu à l'une de ses extrémités d'un pignon 12 prévu pour s'engréner avec le pignon 9 du cylindre 2, l'un des pignons 9, 12 au moins étant bien sûr motorisés. The lower cylinder 2 ′, generally hollow, is also provided at one of its ends with a pinion 12 designed to mesh with the pinion 9 of the cylinder 2, one of the pinions 9, 12 at least being of course motorized.

En outre, ce cylindre 2' est recouvert ou enduit au moins en partie de silicone 13. In addition, this cylinder 2 ′ is covered or coated at least in part with silicone 13.

De la sorte, on comprend que chaque document qui passe (éventuellement en continu) entre les cylindres 2, 2' est entraîné par ceuxci et chauffé par le manchon 8 qui transmet la chaleur provenant des résistances 11. In this way, it is understood that each document which passes (possibly continuously) between the cylinders 2, 2 'is driven by these and heated by the sleeve 8 which transmits the heat coming from the resistors 11.

Le revêtement 13 assure en outre une pression mieux répartie sur le document, qui peut être par exemple une enveloppe bombée en son milieu par rapport à ses côtés à cause des inserts quelle contient.  The coating 13 also provides a better distributed pressure on the document, which may for example be a domed envelope in the middle relative to its sides because of the inserts it contains.

Claims (8)

lEVENDICATIONSTHE CLAIMS 1) Appareil de scellage à chaud pour documents (6), comportant au moins une paire de cylindres (2,2') entre lesquels sont introduits les documents qui sont pourvus de zones revêtues d'un adhésif activable à chaud, caractérisé en ce qu'au moins l'un (2) des cylindres comporte des moyens (11) de chauffage. 1) Heat sealing apparatus for documents (6), comprising at least one pair of cylinders (2,2 ') between which the documents are introduced, which are provided with zones coated with a hot-activatable adhesive, characterized in that 'at least one (2) of the cylinders comprises heating means (11). 2) Appareil selon la revendication 1, caractérisé en ce que le cylindre chauffant (2) est muni d'un noyau (7) fixe chauffant entouré par une enveloppe (8) tournante. 2) Apparatus according to claim 1, characterized in that the heating cylinder (2) is provided with a fixed heating core (7) surrounded by a rotating casing (8). 3) Appareil selon la revendication 2, caractérisé en ce que le noyau (7) fixe est constitué d'une matière conductrice de la chaleur dans laquelle est logée au moins une résistance électrique (11) chauffante. 3) Apparatus according to claim 2, characterized in that the fixed core (7) consists of a heat conducting material in which is housed at least one electrical resistance (11) heating. 4) Appareil selon la revendication 3, caractérisé en ce que le noyau (7) fixe comporte trois résistances (11) cylindriques disposées longitudinalement et espacées angulairement de manière régulière. 4) Apparatus according to claim 3, characterized in that the fixed core (7) comprises three cylindrical resistors (11) arranged longitudinally and angularly spaced regularly. 5) Appareil selon l'une des revendications 2 à 4, caractérisé en ce que l'enveloppe (8) tournante est constituée par un manchon conducteur de la chaleur, monté libre en rotation autour du noyau (7) fixe. 5) Apparatus according to one of claims 2 to 4, characterized in that the rotating casing (8) is constituted by a heat conducting sleeve, mounted free in rotation around the core (7) fixed. 6) Appareil selon l'une des revendications 2 à 5, caractérisé en ce que l'enveloppe tournante (8) du cylindre (2) et l'autre cylindre (2') de la paire de cylindres, ou l'enveloppe tournante de ce dernier, sont en prise en rotation au moyen de pignons d'engrenage (9,10) dont ils sont solidaires. 6) Apparatus according to one of claims 2 to 5, characterized in that the rotating envelope (8) of the cylinder (2) and the other cylinder (2 ') of the pair of cylinders, or the rotating envelope of the latter, are in rotation by means of gear pinions (9,10) of which they are integral. 7) Appareil selon l'une des revendications 1 à 6, dont un seul cylindre (2) de chaque paire est chauffant, caractérisé en ce que le cylindre (2') non chauffant est enduit ou recouvert au moins en partie de silicone (13). 7) Apparatus according to one of claims 1 to 6, of which only one cylinder (2) of each pair is heating, characterized in that the non-heating cylinder (2 ') is coated or covered at least in part with silicone (13 ). 8) Appareil selon l'une des revendications 2 à 7, caractérisé en ce que le noyau (7) fixe chauffant est en aluminium et l'enveloppe tournante (8) en acier.  8) Apparatus according to one of claims 2 to 7, characterized in that the core (7) fixed heater is aluminum and the rotating casing (8) steel.
FR9411989A 1994-10-07 1994-10-07 HOT SEALING APPARATUS FOR DOCUMENTS Expired - Fee Related FR2725398B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9411989A FR2725398B1 (en) 1994-10-07 1994-10-07 HOT SEALING APPARATUS FOR DOCUMENTS
ES09502886U ES1032494Y (en) 1994-10-07 1994-11-21 HOT SEALING DEVICE FOR DOCUMENTS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9411989A FR2725398B1 (en) 1994-10-07 1994-10-07 HOT SEALING APPARATUS FOR DOCUMENTS

Publications (2)

Publication Number Publication Date
FR2725398A1 true FR2725398A1 (en) 1996-04-12
FR2725398B1 FR2725398B1 (en) 1996-11-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR9411989A Expired - Fee Related FR2725398B1 (en) 1994-10-07 1994-10-07 HOT SEALING APPARATUS FOR DOCUMENTS

Country Status (2)

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ES (1) ES1032494Y (en)
FR (1) FR2725398B1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443749A (en) * 1946-01-19 1948-06-22 Benjamin J Audette Sealing device
US3249024A (en) * 1961-11-08 1966-05-03 Machinery Dev Corp Method and apparatus for assembling cartons
US3709775A (en) * 1964-06-11 1973-01-09 Heller W Product compositions for magnetic induction methods to treat and heatseal predetermined areas of parent units
EP0185811A2 (en) * 1984-12-19 1986-07-02 Iseto Shiko Co. Limited Apparatus for manufacturing sealed envelope assemblies
NL8702136A (en) * 1987-09-09 1989-04-03 Audion Elektro Bv Automatic closure machine for polyethene bags - has microswitch operated by inserted packing bag neck to energise solenoid for clamping and heat sealing
US5087495A (en) * 1985-02-05 1992-02-11 Esselte Letraset Limited Assembly for use in a process for making selective transfers to xerographic images on sheet material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443749A (en) * 1946-01-19 1948-06-22 Benjamin J Audette Sealing device
US3249024A (en) * 1961-11-08 1966-05-03 Machinery Dev Corp Method and apparatus for assembling cartons
US3709775A (en) * 1964-06-11 1973-01-09 Heller W Product compositions for magnetic induction methods to treat and heatseal predetermined areas of parent units
EP0185811A2 (en) * 1984-12-19 1986-07-02 Iseto Shiko Co. Limited Apparatus for manufacturing sealed envelope assemblies
US5087495A (en) * 1985-02-05 1992-02-11 Esselte Letraset Limited Assembly for use in a process for making selective transfers to xerographic images on sheet material
NL8702136A (en) * 1987-09-09 1989-04-03 Audion Elektro Bv Automatic closure machine for polyethene bags - has microswitch operated by inserted packing bag neck to energise solenoid for clamping and heat sealing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section EI Week 8917, Derwent World Patents Index; Class X25, AN 89-127799 *

Also Published As

Publication number Publication date
ES1032494U (en) 1996-05-01
ES1032494Y (en) 1996-10-16
FR2725398B1 (en) 1996-11-22

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