FR2561548A3 - Process for giving a glossy appearance to a sheet material for wrapping or packaging, and sheet material thus treated - Google Patents

Process for giving a glossy appearance to a sheet material for wrapping or packaging, and sheet material thus treated Download PDF

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Publication number
FR2561548A3
FR2561548A3 FR8404627A FR8404627A FR2561548A3 FR 2561548 A3 FR2561548 A3 FR 2561548A3 FR 8404627 A FR8404627 A FR 8404627A FR 8404627 A FR8404627 A FR 8404627A FR 2561548 A3 FR2561548 A3 FR 2561548A3
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FR
France
Prior art keywords
sheet material
thermoplastic material
sheet
calendering
giving
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
FR8404627A
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French (fr)
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FR2561548B3 (en
Inventor
Karl Dieter Wobbe
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.)
Amcor Flexibles Selestat SAS
Original Assignee
Alsacienne DAluminium
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 Alsacienne DAluminium filed Critical Alsacienne DAluminium
Priority to FR8404627A priority Critical patent/FR2561548B3/en
Publication of FR2561548A3 publication Critical patent/FR2561548A3/en
Application granted granted Critical
Publication of FR2561548B3 publication Critical patent/FR2561548B3/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • B05D1/265—Extrusion coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/28—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2252/00—Sheets
    • B05D2252/02—Sheets of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
    • B05D3/141—Plasma treatment
    • B05D3/145—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/24—Calendering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0022—Bright, glossy or shiny surface

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

The process consists in causing the sheet material to travel, in continuously extruding over the sheet material a thermoplastic material constituted by a polyethylene, a polypropylene or a polyester, and in calendering the sheet material with the thermoplastic material while the latter is molten. After the calendering operation, a heat-sealable coating is applied to the thermoplastic material. The latter may optionally be surface-treated in order to facilitate the bonding of the coating. Application in the wrapping and packaging field.

Description

La présente invention concerne un procédé pour donner un aspect brillant à l'une au moins des faces d'un matériau en feuille souple ou semirigide. The present invention relates to a method for giving a glossy appearance to at least one of the faces of a flexible or semi-rigid sheet material.

Les procédés que l'on utilise actuellement pour conférer un aspect brillant à des matériaux en feuille souples ou semi-rigides, se déroulent généralement en deux phases distinctes séparées l'une de l'autre par une pé riode de temps relativement longue. La première phase consiste à déposer sur le matériau en feuille une couche de vernis ayant la propriété de durcir en l'absence d'air et de chaleur, et à appliquer ensuite sur le vernis, à l'aide d'un cylindre de laminage, un film de matière plastique présentant un haut brillant superficiel. Quant à la seconde phase, qui ne peut etre exécutée de façon satisfaisante qu'après le durcissement du vernis, elle consiste à enlever le film de matière plastique pour mettre à nu la face externe du vernis qui a entre-temps acquis le haut brillant du film. The methods currently used to impart a shiny appearance to flexible or semi-rigid sheet materials generally take place in two distinct phases separated from each other by a relatively long period of time. The first phase consists in depositing on the sheet material a layer of varnish having the property of hardening in the absence of air and heat, and then applying to the varnish, using a rolling cylinder, a plastic film having a high surface gloss. As for the second phase, which can only be carried out satisfactorily after the hardening of the varnish, it consists in removing the plastic film to expose the external face of the varnish which has meanwhile acquired the high gloss of the movie.

Les procédés à deux phases actuels ne donnent toutefois pas entière satisfaction. Leur mise en oeuvre exige en effet deux passages sur machine, ce qui conduit à exécuter de nombreuses opérations de manutention. Elle demande en outre beaucoup de temps et de main-d'oeuvre, ce qui la rend onéreuse. The current two-phase processes are not entirely satisfactory, however. Their implementation in fact requires two passages on the machine, which leads to the execution of numerous handling operations. It also requires a lot of time and manpower, which makes it expensive.

La présente invention se propose de remédier aux inconvénients des procédés actuels et, pour ce faire, elle a pour objet un procédé qui se carac merise en ce qu'il consiste à faire circuler le matériau en feuille, à extruder en continu sur le matériau en feuille une matière thermoplastique constituée par un polyéthylène, un polypropylène ou un polyester, et à calandrer le matériau en feuille avec la matière thermoplastique alors que celle-ci est encore en fusion. The present invention proposes to remedy the drawbacks of current methods and, to do this, it relates to a method which is characterized in that it consists in circulating the sheet material, in extruding continuously on the material in sheet a thermoplastic material consisting of polyethylene, polypropylene or polyester, and calendering the sheet material with the thermoplastic material while the latter is still in fusion.

Un seul passage sur machine suffit maintenant pour conférer un aspect brillant au matériau en feuille que l'on souhaite mettre en valeur. La calandre contre en effet à la matière thermoplastique un état de surface par faitament lisse qui donne au matériau en feuille ses caractéristiques définiti sures de brillant. A single pass on the machine is now enough to give a shiny appearance to the sheet material that we want to enhance. The radiator grille in fact protects the thermoplastic material from a surface condition which is smooth, which gives the sheet material its definitive characteristics of gloss.

Les opérations de manutention qui devaient être effectuées jusqu'ici sont donc réduites au strict minimum 9 ce qui permet d'augmenter les cadences de production et de réduire le personnel. Les machines peuvent par ailleurs être utilisées au maximum de leur capacité, avec pour conséquence une diminution notable du prix de revient à la fabrication.  The handling operations which had to be carried out so far are therefore reduced to the strict minimum 9, which makes it possible to increase production rates and reduce staff. The machines can also be used to the maximum of their capacity, with the consequence of a noticeable reduction in the cost price during manufacture.

La matière thermoplastique utilisée présente en outre une bonne adhérence vis-à-vis du matériau en feuille et permet par conséquent d'obtenir des produits finis d'excellentes qualités. The thermoplastic material used also has good adhesion to the sheet material and therefore allows finished products of excellent quality to be obtained.

Dans le cas où le matériau en feuille, souple ou semi-rigide, porte des impressions, la matière thermoplastique peut avantageusement être transparente pour que ces impressions demeurent parfaitement visibles. On notera ici que la matière thermoplastique protège également les impressions contre l'action d'agents extérieurs. In the case where the sheet material, flexible or semi-rigid, carries impressions, the thermoplastic material can advantageously be transparent so that these impressions remain perfectly visible. It should be noted here that the thermoplastic material also protects the prints against the action of external agents.

Si l'on tient compte de la position de la matière thermoplastique par rapport à l'impression, celle-ci peut être réalisée entre le matériau et la matière thermoplastique lorsque cette dernière est transparente. Par contre, elle peutêtre réalisée directement sur la matière thermoplastique lorsque cette dernière est opaque ou transparente. If the position of the thermoplastic material is taken into account in relation to the printing, the latter can be produced between the material and the thermoplastic material when the latter is transparent. On the other hand, it can be carried out directly on the thermoplastic material when the latter is opaque or transparent.

Lorsque le matériau en feuille, souple ou semi-rigide, est destiné à des domaines techniques tels que l'emballage ou le conditionnement, une enduction thermoscellable peut avantageusement être appliquée sur lui, après l'opération de calandrage, pour permettre un thermoscellage chair contre peau ou peau contre peau. Il pourrait également être thermoscellé sur un autre matériau en feuille, préparé ou non pas la mise en oeuvre du procédé selon l'invention. When the sheet material, flexible or semi-rigid, is intended for technical fields such as wrapping or conditioning, a heat-sealable coating can advantageously be applied to it, after the calendering operation, to allow a heat-seal against skin or skin against skin. It could also be heat sealed on another sheet material, prepared or not the implementation of the method according to the invention.

Outre les opérations de calandrage et d'enduction, on peut avantageusement soumettre la matière thermoplastique à un traitement de surface facilitant l'accrochage de l'enduction de thermoscellage, par exemple à un traitement par étincelage électrique ou à une application d'un primaire d'accrochage approprié
Le procédé selon l'invention convient parfaitement pour donner un grand brillant à des complexes constitués par l'assemblage de plusieurs matériaux en feuille.In addition to the calendering and coating operations, the thermoplastic material can advantageously be subjected to a surface treatment facilitating the attachment of the heat-sealing coating, for example to a treatment by electrical sparking or to the application of a primer d '' suitable attachment
The method according to the invention is perfectly suitable for giving a high gloss to complexes formed by the assembly of several sheet materials.

Naturellement, la présente invention concerne également les matériaux en feuille souples ou semi-rigides, dont l'une au moins des faces a acquis un aspect brillant à la suite de la mise en oeuvre du procédé décrit ci-dessus. Naturally, the present invention also relates to flexible or semi-rigid sheet materials, at least one of the faces of which has acquired a shiny appearance as a result of the implementation of the method described above.

Un mode d'exécution de la présente invention sera décrit ci-après à titre d'exemple nullement limitatif en référence au dessin annexé qui est un schéma montrant une machine dans laquelle le procédé selon l'invention est mis en oeuvre.  An embodiment of the present invention will be described below by way of non-limiting example with reference to the accompanying drawing which is a diagram showing a machine in which the method according to the invention is implemented.

La machine que l'on peut voir sur le dessin est plus particulièrement destinée au traitement en continu d'un matériau en bande constitué par un complexe comprenant par exemple une feuille d'aluminium de 7 à 9 microns d'épaisseur, sur laquelle est collée une feuille de papier de 50 g/m2 portant une impression sur sa face externe, le support de l'impression pouvant toutefois être auss bien le matériau luimmeme qu'une couche de matière thermoplastique déposée sur celui-ci. Il va de soi par ailleurs que le matériau en feuille pourrait être constitué par un complexe comprenant plus de deux feuilles, formées dans le même matériau ou dans des matériaux de nature différente.Il pourrait également n'être constitué que par une seule feuille, celle-ci pouvant d'ailleurs être réalisée à partir d'un matériau poreux ou non poreux, par exemple un tissu, un papier, etc... The machine which can be seen in the drawing is more particularly intended for the continuous treatment of a strip material constituted by a complex comprising for example an aluminum sheet of 7 to 9 microns thick, on which is glued a sheet of paper of 50 g / m2 carrying an impression on its external face, the support of the impression being able however to be as well the luimmeme material as a layer of thermoplastic material deposited on this one. It goes without saying, moreover, that the sheet material could consist of a complex comprising more than two sheets, formed from the same material or from materials of a different nature. It could also consist of only one sheet, that -this can also be made from a porous or non-porous material, for example a fabric, paper, etc ...

La machine comprend à l'une de ses extrémités, une bobine 1 du matériau 2 auquel on souhaite donner un aspect brillant à l'une de ses faces, et à son autre extrémité, une bobine 3 destinée à recevoir le matériau devenu brillant. Des moyens non représentés sont prévus pour faire tourner les bobines 1 et 3 dans le même sens et à la même vitesse, de façon à ce que le matériau 2 se déplace dans le sens de la flèche F avec une vitesse de translation constante. The machine comprises at one of its ends, a coil 1 of the material 2 to which one wishes to give a shiny appearance to one of its faces, and at its other end, a coil 3 intended to receive the material which has become shiny. Means not shown are provided to rotate the coils 1 and 3 in the same direction and at the same speed, so that the material 2 moves in the direction of the arrow F with a constant translation speed.

La machine comprend deux cylindres de guidage 4 et 5, situés l'un légèrement en aval de la bobine 1 et l'autre en amont d'un poste d'enduction 6 hélio ou flexo. Sur son trajet compris entre les deux cylindres de guidage, le matériau 2 passe sous la fente d'une extrudeuse 7, et dans une calandre constituée par un cylindre à surface lisse 8 et un presseur 8a. A la suite, le matériau 2 passe sous une tête d'étincelage électrique 9 de type connu. The machine comprises two guide cylinders 4 and 5, one located slightly downstream of the coil 1 and the other upstream of a rotogravure or flexo coating station 6. On its path between the two guide cylinders, the material 2 passes under the slot of an extruder 7, and in a calender constituted by a cylinder with a smooth surface 8 and a presser 8a. Subsequently, the material 2 passes under an electrical sparking head 9 of known type.

L'extrudeuse renferme une matière thermoplastique 10, par exemple un polyéthylène transparent. Cette matière, qui sort de la fente de l'extrudeuse à l'état fondu, forme sur le matériau 2 une couche transparente 11 ayant une épaisseur comprise par exemple entre 15 et 25 microns, mais qui pourrait bien entendu varier en fonction de la nature et de la porosité du matériau 2. The extruder contains a thermoplastic material 10, for example a transparent polyethylene. This material, which leaves the slot of the extruder in the molten state, forms on the material 2 a transparent layer 11 having a thickness of for example between 15 and 25 microns, but which could of course vary depending on the nature and the porosity of the material 2.

Quant à la calandre 8, elle est constituée par exemple par un cylindre d'acier poli et chromé de manière à posséder un état de surface parfaitement lisse et brillant, image de celui que l'on désire donner à la surface du matériau 2. On notera ici que la calandre 8 est située à une distance telle de l'extrudeuse que la matière 10 qui a été déposée sur le matériau 2 parvient jusqu'à elle à l'état fondu.  As for the grille 8, it is constituted for example by a cylinder of polished and chromed steel so as to have a perfectly smooth and shiny surface, image of that which it is desired to give to the surface of the material 2. note here that the calender 8 is located at such a distance from the extruder that the material 10 which has been deposited on the material 2 reaches it in the molten state.

Le poste d'enduction 6 est prévu pour appliquer une enduction thermoscellable par des procédés classiques connus hélio, flexo, etc... The coating station 6 is provided for applying a heat-sealable coating by known conventional methods rotogravure, flexo, etc.

Naturellement, la machine pourrait comporter une seconde extrudeuse et une seconde calandre judicieusement positionnées le long du traJet du matériau 2, afin d'effectuer sur la deuxième face de celui-ci une extrusion couchage d'une matière thermocollante adéquate permettant le scellage chair contre peau. Naturally, the machine could include a second extruder and a second calender judiciously positioned along the path of the material 2, in order to effect on the second face of the latter an extrusion coating of a suitable fusible material allowing the sealing skin to skin. .

Pour être complet, on précisera enfin que la bande qui s'enroule sur la bobine 3 peut etre directement utilisable, sans autre manipulation qu'une refente éventuelle de la bobine mère en bobines filles correspondant aux caractéristiques de la machine d'emballage ou de conditionnement.  To be complete, it will finally be specified that the strip which is wound on the reel 3 can be directly usable, without any other manipulation than a possible slitting of the mother reel into daughter reels corresponding to the characteristics of the wrapping or conditioning machine .

Claims (8)

REVENDICATIONS 1. Procédé pour donner un aspect brillant à l'une au moins des faces d'un matériau en feuille souple ou semi-rigide, caractérisé en ce qu'il consiste à faire circuler le matériau en feuille, à extruder en continu sur le matériau en feuille une matière thermoplastique constituée par un polyé thylêne, un polypropylène ou un polyester, et à calandrer le matériau en feuille avee la matière thermoplastique alors que celle-ci est encore en fusion. 1. Method for giving a shiny appearance to at least one of the faces of a flexible or semi-rigid sheet material, characterized in that it consists in circulating the sheet material, in extruding continuously on the material in sheet form a thermoplastic material consisting of polyethylene, polypropylene or polyester, and in calendering the sheet material with the thermoplastic material while the latter is still in fusion. 2. Procédé selon la revendication 1, caractérisé en ce que la matière thermoplastique est transparente. 2. Method according to claim 1, characterized in that the thermoplastic material is transparent. 3. Procédé selon la revendication 1, caractérisé en ce que la matière thermoplastique est opaque. 3. Method according to claim 1, characterized in that the thermoplastic material is opaque. 4. Procédé selon l'une quelconque des revendications 1 à 3 carac sérié en ce qu'après l'opération de calandrage, on applique une enduction termoscellable sur la matière thermoplastique. 4. Method according to any one of claims 1 to 3 charac serialized in that after the calendering operation, applying a heat sealable coating on the thermoplastic material. 5. Procédé selon la revendication 4, caractérisé en ce qu'entre les opérations de calandrage et d'enduction, ou soumet la matière thermoplastique à un traitement facilitant l'accrochage de l'enduction thermoscellable. 5. Method according to claim 4, characterized in that between the calendering and coating operations, or subjects the thermoplastic material to a treatment facilitating the attachment of the heat-sealable coating. 6. Procédé selon la revendication 5, caractérisé en ce que le traitement de surface est effectué par étincelage électrique ou par applica tion d'un primaire d'accrochage adéquat. 6. Method according to claim 5, characterized in that the surface treatment is carried out by electrical sparking or by application of an adequate bonding primer. 7. Procédé selon l'une quelconque des revendications 1 à 6, carac térise en ce que le matériau en feuille est constitué par un complexe formé de plusieurs feuilles superposées liées entre elles. 7. Method according to any one of claims 1 to 6, charac terized in that the sheet material consists of a complex formed of several superimposed sheets linked together. 8. Matériau en feuille souple ou semi-rigide, dont l'une au moins des faces présente un aspect brillant obtenu par la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 7.  8. Material in flexible or semi-rigid sheet, at least one of the faces of which has a shiny appearance obtained by implementing the method according to any one of claims 1 to 7.
FR8404627A 1984-03-26 1984-03-26 PROCESS FOR GIVING SHEET MATERIAL FOR PACKAGING OR PACKAGING, AND SHEET MATERIAL THUS PROCESSED Expired FR2561548B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8404627A FR2561548B3 (en) 1984-03-26 1984-03-26 PROCESS FOR GIVING SHEET MATERIAL FOR PACKAGING OR PACKAGING, AND SHEET MATERIAL THUS PROCESSED

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Application Number Priority Date Filing Date Title
FR8404627A FR2561548B3 (en) 1984-03-26 1984-03-26 PROCESS FOR GIVING SHEET MATERIAL FOR PACKAGING OR PACKAGING, AND SHEET MATERIAL THUS PROCESSED

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FR2561548A3 true FR2561548A3 (en) 1985-09-27
FR2561548B3 FR2561548B3 (en) 1986-04-11

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0356924A2 (en) * 1988-08-29 1990-03-07 Eastman Kodak Company Coating and drying method
WO1994015718A2 (en) * 1993-01-15 1994-07-21 Nordson Corporation System and method for applying a desired, protective finish to printed label stock

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0356924A2 (en) * 1988-08-29 1990-03-07 Eastman Kodak Company Coating and drying method
EP0356924A3 (en) * 1988-08-29 1991-02-27 Eastman Kodak Company Coating and drying method
WO1994015718A2 (en) * 1993-01-15 1994-07-21 Nordson Corporation System and method for applying a desired, protective finish to printed label stock
WO1994015718A3 (en) * 1993-01-15 1994-09-01 Nordson Corp System and method for applying a desired, protective finish to printed label stock
US5520958A (en) * 1993-01-15 1996-05-28 Nordson Corporation System and method for applying a desired, protective finish to printed label stock
US5645639A (en) * 1993-01-15 1997-07-08 Nordson Corporation Apparatus for applying a protective finish to a web

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Publication number Publication date
FR2561548B3 (en) 1986-04-11

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