FR2650765A1 - Method for the continuous anti-blocking treatment of a strand (bead) of permanent adhesive material, more particularly a hot-melt adhesive, at the output of a mixer-extruder, as well as a device allowing implementation of this method and product obtained thereby - Google Patents

Method for the continuous anti-blocking treatment of a strand (bead) of permanent adhesive material, more particularly a hot-melt adhesive, at the output of a mixer-extruder, as well as a device allowing implementation of this method and product obtained thereby Download PDF

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Publication number
FR2650765A1
FR2650765A1 FR8910821A FR8910821A FR2650765A1 FR 2650765 A1 FR2650765 A1 FR 2650765A1 FR 8910821 A FR8910821 A FR 8910821A FR 8910821 A FR8910821 A FR 8910821A FR 2650765 A1 FR2650765 A1 FR 2650765A1
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FR
France
Prior art keywords
adhesive material
coated
extruder
mixer
station
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
FR8910821A
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French (fr)
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FR2650765B1 (en
Inventor
Jean Paul Mireux
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.)
Henkel France SAS
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Henkel France SAS
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Filing date
Publication date
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Priority to FR8910821A priority Critical patent/FR2650765B1/en
Priority to AT90402093T priority patent/ATE94802T1/en
Priority to DE90402093T priority patent/DE69003491T2/en
Priority to DK90402093.0T priority patent/DK0412867T3/en
Priority to EP90402093A priority patent/EP0412867B1/en
Priority to ES199090402093T priority patent/ES2046736T3/en
Publication of FR2650765A1 publication Critical patent/FR2650765A1/en
Application granted granted Critical
Publication of FR2650765B1 publication Critical patent/FR2650765B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/60—Releasing, lubricating or separating agents
    • B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
    • 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
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/088—Means for treating work or cutting member to facilitate cutting by cleaning or lubricating
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0067—Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other
    • B29C37/0071—Dusting machines
    • 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
    • B29K2029/00—Use of polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals or derivatives thereof as moulding material
    • 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
    • B29K2096/00—Use of specified macromolecular materials not provided for in a single one of main groups B29K2001/00 - B29K2095/00, as moulding material
    • B29K2096/04—Block polymers

Abstract

a) The invention relates to a method for the continuous anti-blocking treatment of a strand of permanent adhesive material, more particularly a hot-melt adhesive, at the output of a mixer-extruder, as well as a device allowing implementation of this method and product obtained thereby. b) The method is characterised in that the strand 7 is made to pass through a bed of an anti-blocking agent which is fluidised or in suspension, so as to deposit a fine powdery film on its surface, then the strand 7 thus coated is cooled and cut to the desired length, and the fragments thus obtained are packaged directly without taking additional precautions. c) The invention applies to continuous anti-blocking treatments of a permanent adhesive material.

Description

"Procédé de traitement anti-adhérent en continu d'un
cordon de matiere adhésive permanente, plus particu
lièrement d'un adhésif thermofusible à la sortie d'un
mélangeur extrudeur ainsi que dispositif permettant
la mise en oeuvre de ce procédé et produit ainsi
obtenu"
La présente invention concerne un procédé de traitement anti-adhérent en continu d'un cordon de matière adhésive permanente, plus particulièrement d'un adhésif thermofusible sortant d'un mélangeur extrudeur à une température supérieure à sa température de ramollissement."Non-stick treatment process continuously of a
cord of permanent adhesive material, more particu
firstly a hot melt adhesive at the outlet of a
mixer extruder as well as device allowing
the implementation of this process and thus produces
got"
The present invention relates to a method of continuous release treatment of a bead of permanent adhesive material, more particularly a hot melt adhesive leaving an extruder mixer at a temperature above its softening temperature.

Dans de nombreux domaines de la chimie industrielle, il est courant d'utiliser des masses adhésives permanentes, c'est-à-dire des matériaux qui, à la température de manipulation, généralement la température ambiante, sont caractérisés par un ou plusieurs des critères suivants
- adhésivité intrinsèque de la masse,
- tack dans les conditions normales de température et de pression,
- sensibilité à la pression,
- changement d'état en surface avec un accroissement de la température (l'été par exemple).In many fields of industrial chemistry, it is common to use permanent adhesive masses, that is, materials which, at the handling temperature, generally the ambient temperature, are characterized by one or more of the criteria following
intrinsic adhesiveness of the mass,
- tack under normal conditions of temperature and pressure,
- pressure sensitivity,
- change of state on the surface with an increase in temperature (summer for example).

Compte tenu du caractère adhésif permanent de ces~matériaux, il est impératif qu'ils subissent un traitement anti-adhérent pour en permettre une manipulation, un transport et un stockage plus aisé. De plus, ce traitement permet d'éviter une agglomération de plusieurs fragments de ces matériaux ainsi qu'un dépôt d'impuretés sur ces derniers. Given the permanent adhesive nature of these ~ materials, it is imperative that they undergo a non-stick treatment to allow handling, transport and storage easier. In addition, this treatment avoids agglomeration of several fragments of these materials and a deposition of impurities thereon.

Dans ce but, les matières adhésives sont classiquement livrées dans des barquettes paraffinées et siliconées, ce qui permet d'éviter tout adhésion ce mode de conditionnement est, cependant, particulièrement onéreux et peu pratique, étant donné que les barquettes ont en général une contenance comprise entre 500 g et 2 kg et qu'il n'est pas rare que des utilisateurs doivent "démouler" deux à trois tonnes par jour. For this purpose, the adhesive materials are conventionally delivered in paraffin and silicone trays, which makes it possible to avoid any adhesion this mode of packaging is, however, particularly expensive and impractical, since the trays generally have a capacity included between 500 g and 2 kg and it is not uncommon for users to "unmold" two to three tonnes per day.

Pour remédier à ces inconvénients, on a déjà proposé de faire subir aux adhésifs thermofusibles divers traitements permettant de leur faire perdre leur adhérence en surface et par suite de les conditionner directement en vrac. To overcome these drawbacks, it has been proposed to subject the hot melt adhesives various treatments allowing them to lose their adhesion to the surface and therefore to directly pack bulk.

On a, par exemple, déjà proposé de coextruder une gaine entourant le produit thermofusible ; la matière de coextrusion peut être, par exemple, du po lyéthylène ou un "hot melt" non auto-adhérent compatible avec la formulation du produit extrudé. For example, it has already been proposed to coextrude a sheath surrounding the hot melt product; the coextrusion material may be, for example, polyethylene or a non-self-adhering hot melt compatible with the formulation of the extruded product.

On a, également, déjà proposé de protéger des matières adhésives par déposition électrostatique d'un film d'agent anti-adhérent par pulvérisation d'un thermofusible non auto-adhérent sur les surfaces d'un bloc d'auto-adhésif moulé. It has also been previously proposed to protect adhesives by electrostatic deposition of a release agent film by spraying a non-self-adhering hot melt onto the surfaces of a molded self-adhesive block.

Ces différents processus de traitement présentent toutefois, l'inconvénient d'être onéreux, peu pratiques et non susceptibles d'être mis en oeuvre en continu. These different treatment processes, however, have the disadvantage of being expensive, impractical and not likely to be implemented continuously.

La présente invention a pour objet de remé dier à ces inconvénients en proposant un produit de traitement anti-adhérent en continu d'un cordon de ma tière adhésive permanente directement à sa sortie d'un mélangeur extrudeur à une température supérieure à sa température de ramollissement. It is an object of the present invention to overcome these disadvantages by providing a continuous release treatment product of a permanent adhesive bead directly at its outlet from an extruder mixer at a temperature above its softening temperature. .

Conformément à l'invention, ce procédé est caractérisé en ce que l'on fait pa#sser le cordon sortant de la filière du mélangeur extrudeur au travers d'un lit d'agent anti-adhérent fluidisé ou en suspension, de manière à déposer une fine pellicule poudreuse à sa surface, puis on refroidit le cordon ainsi revêtu, on le découpe à la longueur souhaitée et on conditionne directement les fragments ainsi obtenus sans précautions supplémentaires. According to the invention, this process is characterized in that the cord exiting the die of the extruder mixer is passed through a bed of fluidized or suspended anti-adherent agent so as to deposit a thin powdery film on its surface, then the cord thus coated is cooled, it is cut to the desired length and the fragments thus obtained are directly conditioned without additional precautions.

Le cordon ainsi réalisé en continu au moyen de la vis d'extrusion et mis en forme dans la filière peut, bien entendu, avoir une géométrie et des dimensions variables, mais, ses cotes, choisies par l'utilisateur, peuvent toujours être contrôlées. De même, les dimensions des fragments découpés peuvent varier en fonction des voeux de l'utilisateur. The cord thus produced continuously by means of the extrusion screw and shaped in the die can, of course, have a geometry and variable dimensions, but its dimensions, chosen by the user, can always be controlled. Similarly, the dimensions of the cut fragments may vary according to the wishes of the user.

L'invention permet, bien entendu, le traitement de toutes les matières adhésives permanentes parmi les matières pouvant être traitées, on peut, à titre d'exemple mentionner tous les composés énumérés ci-après
- Formulations à base d'EVA, SBS, SIS, Latex
- Formulations à base de résines et dérivés
(par exemple les résines de copophanes, de
courmarones, d'indenes, d'hydrocarbures
aliphatiques et aromatiques)
- Formulations à base de copolymères SEB,
SEBS,
- Formulations à base de copolymères vinyli
ques partiellement cristallins,
- Formulations à base de polyesters, de
polyamides,
- d'une façon plus générale, toutes les for
mulations issues de la combinaison des po
lymères, copolymères, polycondensats et
copolycondensats mentionnés ci-dessus avec
adjonction éventuelle de termonomères de
natures diverses.The invention allows, of course, the treatment of all permanent adhesive materials among the materials that can be treated, it is possible, by way of example, to mention all the compounds listed below.
- Formulations based on EVA, SBS, SIS, Latex
- Formulations based on resins and derivatives
(eg resins of coprophanes,
courmarones, indenes, hydrocarbons
aliphatic and aromatic)
Formulations based on copolymers SEB,
SEBS
- Formulations based on vinyl copolymers
partially crystalline
- Formulations based on polyesters,
polyamides,
- more generally, all the fora
combinations resulting from the combination of
lymers, copolymers, polycondensates and
copolycondensates mentioned above with
possible addition of termonomers of
various natures.

Les agents anti-adhérents pouvant être utilisés conformément à l'invention doivent être aptes à former un lit fluidisé, être inertes chimiquement visà-vis de la masse adhésive et ne pas modifier ses pro priétes intrinsèques. The antiblocking agents which can be used according to the invention must be able to form a fluidized bed, be chemically inert with respect to the adhesive mass and not modify its intrinsic properties.

On a ainsi pu obtenir des résultats particu.- lièrement satisfaisants en utilisant, dans ce but, des esters métalliques, notamment des esters choisis dans le groupe formé par les stéarates, les octoates, les éthyl hexanoates et les oléates ou autres esters d'acide gras saturés ou non. Particularly satisfactory results have thus been obtained by using, for this purpose, metal esters, in particular esters selected from the group consisting of stearates, octoates, ethyl hexanoates and oleates or other acid esters. saturated fat or not.

Ces esters peuvent, notamment être constitués par des esters calciques et/ou barytiques et/ou aluminiques et/ou zinciques.  These esters may in particular be constituted by calcium esters and / or barytic and / or aluminum and / or zinc.

Cette liste ne doit, bien entendu, pas être considérée comme étant limitative de l'invention, et d'autres matières poudreuses pourraient être utilisées, à la condition qu'elles satisfassent aux exigences susmentionnées. This list should not, of course, be considered to be limiting of the invention, and other powdery materials could be used, provided that they meet the above requirements.

Pour que le procédé conforme à l'invention puisse donner toute satisfaction, il est nécessaire que les fragments une fois découpés, soit revêtus d'agent anti-adhérent sur la totalité de leur surface il est par suite impératif de prévoir une opération permettant la protection des tranches. So that the process according to the invention can give any satisfaction, it is necessary that the fragments once cut, or coated with anti-adherent agent on their entire surface it is therefore imperative to provide an operation for the protection slices.

A cet effet et selon une caractéristique préférentielle de l'invention, on découpe le cordon revêtu de l'agent anti-adhérent en comprimant la surface de tranchage de façon telle que ses bords adhérent les uns contre les autres. For this purpose and according to a preferred feature of the invention, the bead coated with the release agent is cut by compressing the slicing surface so that its edges adhere against each other.

Ce "rabattement" des "lèvres" de tranchage les unes contre les autres permet de supprimer toute surface de tranchage non revêtus d'agent antiadhérent, et donc de conditionner sans protection préalable les fragments découpés sans risque d'agglomération au niveau des tranches. This "folding" of the "lips" slicing against each other allows to remove any slicing surface not coated with anti-adhesive agent, and thus to condition unprotected precut fragments cut without risk of agglomeration at the slices.

L'invention se rapporte également à des fragments de matière antiadhésive permanente, plus particulièrement d'un adhésif thermofusible, obtenus par la mise en oeuvre du procédé susmentionné, ainsi qu'à une installation permettant la mise en oeuvre de ce procédé. The invention also relates to fragments of permanent non-stick material, more particularly a hot melt adhesive, obtained by the implementation of the aforementioned method, and to an installation for carrying out this method.

Cette installation est caractérisée en ce qu'elle comporte, dans le sens d'avancement du cordon de matière adhésive, un mélangeur extrudeur à filière variable, un poste de traitement par l'agent antiadhérent, un poste de refroidissement, un poste de découpe des fragments et un poste de conditionnement. This installation is characterized in that it comprises, in the direction of advancement of the bead of adhesive material, an extruder mixer variable die, a treatment station with the anti-adhesive agent, a cooling station, a cutting station of fragments and a packing station.

La caractéristique essentielle de cette installation est liée au fait qu'elle permet un conditionnement en continu des fragments découpés directement à la sortie du mélangeur extrudeur. The essential characteristic of this installation is related to the fact that it allows a continuous packaging of cut fragments directly at the output of the mixer extruder.

Selon une autre caractéristique de l'invention permettant de ne pas se heurter à des problèmes d'adhérence au niveau du poste de découpe, celui-ci comporte un organe de découpe muni d'une lame dont la surface est revêtue d'un produit siliconé. According to another characteristic of the invention making it possible not to encounter adhesion problems at the cutting station, the latter comprises a cutting member provided with a blade whose surface is coated with a silicone product .

Selon l'invention, cet organe peut avantageusement être constitué par une roue à aubes dont la vitesse de rotation est proportionnelle à la vitesse d'extrusion. According to the invention, this member may advantageously be constituted by a paddle wheel whose rotational speed is proportional to the extrusion speed.

Cette configuration n'est, bien entendu, pas limitative de l'invention et on pourrait prévoir des organes de découpe autres, notamment à tranchant en biais (guillotine). This configuration is, of course, not limited to the invention and one could provide other cutting members, including angled cutting edge (guillotine).

Les caractéristiques du procédé ainsi que du dispositif qui font l'objet de l'invention seront décrites plus en détail en se référant au dessin annexé qui est un schéma représentatif de l'invention. The characteristics of the process as well as the device which is the subject of the invention will be described in more detail with reference to the appended drawing which is a representative diagram of the invention.

Selon la figure, cette installation comporte, dans le sens A d'avancement de la matière, un mélangeur extrudeur 1 muni, à sa sortie, d'une filière à calibre variable 2, un poste de traitement par l'agent anti-adhérent 3, un poste de refroidissement 4, un poste 5 de découpe des fragments et un poste de conditionnement 6. According to the figure, this installation comprises, in the direction A of advancement of the material, an extruder mixer 1 equipped, at its output, with a die of variable caliber 2, a treatment station with the release agent 3 , a cooling station 4, a fragment cutting station 5 and a packaging station 6.

Le cordon 7 sort de la filière 2 à une température supérieure à sa température de ramolissement, passe directement dans le poste 3 au travers d'un lit d'agent anti-adhérent fluidisé ou en suspension dans lequel il est revêtu sur sa surface d'une fine pellicule poudreuse, puis, est dirigé vers le poste de refroidissement 4 avant d'être conduit au poste de découpe 5 dans lequel un organe de découpe 8 le débite en fragments de dimension prédéterminée qui sont ensuite dirigés vers le poste de conditionnement 6. The cord 7 leaves the die 2 at a temperature above its softening temperature, passes directly into the station 3 through a bed of fluidized or suspended non-stick agent in which it is coated on its surface. a thin powder film, then is directed to the cooling station 4 before being taken to the cutting station 5 in which a cutting member 8 delivers it into fragments of predetermined size which are then directed to the conditioning station 6.

L'organe de découpe 8, qui est muni d'une lame 9 représentée schématiquement et dont la surface est revêtue d'un produit siliconé peut, par exemple, être constitué par une roue à aubes dont la vitesse de rotation est proportionnelle à la vitesse d'extrusion ; une telle roue permet d'obtenir simultanément une action de découpe et une action de compression des tranches permettant d'éliminer par "rabattement" toute surface non revêtue d'agent anti-adhérent.  The cutting member 8, which is provided with a blade 9 shown schematically and whose surface is coated with a silicone product may, for example, be constituted by a paddle wheel whose speed of rotation is proportional to the speed extrusion; such a wheel makes it possible simultaneously to obtain a cutting action and an action of compressing the slices, making it possible to eliminate by "folding" any surface not coated with anti-adhering agent.

Claims (10)

REVENDICATIONS 1-) Procédé de traitement anti-adhérent en continu d'un cordon (7) de matière adhésive permanente, plus particulièrement d'un adhésif thermofusible sortant d'un mélangeur extrudeur (1) à une température supérieure à sa température de ramollissement, caractérisé en ce que l'on fait passer le cordon (7) au travers d'un lit d'agent anti-adhérent fluidisé ou en suspension, de manière à déposer une fine pellicule poudreuse à sa surface, puis on refroidit le cordon (7) ainsi revêtu, on le découpe à la longueur souhaitée et on conditionne directement les fragments ainsi obtenus sans précautions supplémentaires. 1-) Continuous anti-adhesion treatment method of a bead (7) of permanent adhesive material, more particularly of a hot melt adhesive leaving an extruder mixer (1) at a temperature above its softening temperature, characterized in that the cord (7) is passed through a bed of fluidized or suspended anti-adherent agent so as to deposit a thin powdery film on its surface, and then the cord is cooled (7) thus coated, it is cut to the desired length and directly conditioned fragments thus obtained without additional precautions. 2') Procédé selon la revendication 1, caractérisé en ce que la matière adhésive permanente appartient au groupe constitué par des adhésifs thermofusibles à base d'VA, de SBS, de SIS, de latex, d'élastomères de synthèse, de résines et dérivés de copolymères SEB et/ou SE3S, de copolymères vinyliques partiellement cristallins, de polyester et par toutes les combinaisons de ces polymères ou copolymères avec adjonction éventuelle de termonomères de natures diverses. 2 ') Method according to claim 1, characterized in that the permanent adhesive material belongs to the group consisting of hot melt adhesives based on VA, SBS, SIS, latex, synthetic elastomers, resins and derivatives of copolymers SEB and / or SE3S, of partially crystalline vinyl copolymers, of polyester and by any combination of these polymers or copolymers with possible addition of termonomers of various natures. 3') Procédé selon l'une quelconque des revendications 1 et 2, caractérisé en ce que l'agent anti-adhérent comporte au moins un ester métallique. 3 ') Process according to any one of claims 1 and 2, characterized in that the anti-adherent agent comprises at least one metal ester. 4') Procédé selon la revendication 3, caractérisé en ce que le ou les esters métalliques sont choisis dans le groupe formé par les stéarates, les octoates, les éthyl hexanoates et les oléates. 4 ') Process according to claim 3, characterized in that the metal ester (s) are chosen from the group formed by stearates, octoates, ethyl hexanoates and oleates. 5') Procédé selon l'une quelconque des revendications 3 et 4, caractérisé en ce que le ou les esters métalliques sont des esters calciques et/ou barytiques et/ou aluminiques et/ou zinciques. 5 ') Process according to any one of claims 3 and 4, characterized in that the metal ester or esters are calcium esters and / or barytic and / or aluminum and / or zinc. 6') Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'on découpe le cordon (7) revêtu de l'agent anti-adhérent en comprimant la surface de tranchage de façon telle que ses bords adhérent les uns contre les autres, permettant ainsi d'obtenir des fragments revêtus d'agent anti-adhérent sur la totalité de leur surface. 6 ') Process according to any one of claims 1 to 5, characterized in that one cut the cord (7) coated with the release agent by compressing the slicing surface so that its edges adhere to the against each other, thus making it possible to obtain fragments coated with anti-adherent agent on their entire surface. 7 < ) Fragment de matière anti-adhésive permanente, plus particulièrement d'un adhésif thermofusible, caractérisé en ce qu'il est obtenu par la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 6. 7) Fragment of permanent release material, more particularly a hot melt adhesive, characterized in that it is obtained by carrying out the method according to any one of claims 1 to 6. 8 ) Installation pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 6, caractérisée en ce qu'elle comporte, dans le sens d'avancement (A) du cordon (7) de matière adhésive, un mélangeur extrudeur (1) à filière variable (2), un poste de traitement (3) par l'agent anti-adhérent, un poste de refroidissement (4), un poste de découpe (5) des fragments et un poste de conditionnement (6). 8) Installation for carrying out the method according to any one of claims 1 to 6, characterized in that it comprises, in the direction of advance (A) of the bead (7) of adhesive material, a mixer extruder (1) with a variable die (2), a treatment station (3) with the release agent, a cooling station (4), a cutting station (5) for the fragments and a conditioning station (6) . 9 < ) Installation selon la revendication 8, caractérisée en ce que le poste de découpe (5) comporte un organe de découpe (8) muni d-'une lame (9) dont la surface est revêtue d'un produit siliconé. 9 <) Installation according to claim 8, characterized in that the cutting station (5) comprises a cutting member (8) provided with a blade (9) whose surface is coated with a silicone product. 10 < ) Installation selon l'une quelconque des revendications 8 et 9, caractérisée en ce que l'organe de découpe (8) est constitué par une roue à aubes dont la vitesse de rotation est proportionnelle à la vitesse d'extrusion.  10 <) Installation according to any one of claims 8 and 9, characterized in that the cutting member (8) is constituted by a blade wheel whose rotational speed is proportional to the extrusion speed.
FR8910821A 1989-08-11 1989-08-11 PROCESS FOR THE CONTINUOUS NON-ADHERENT TREATMENT OF A CORD OF PERMANENT ADHESIVE MATERIAL, IN PARTICULAR OF A THERMO FUSABLE ADHESIVE AT THE EXIT OF AN EXTRUDER MIXER AND DEVICE FOR CARRYING OUT THIS PROCESS AND PRODUCT THUS OBTAINED Expired - Fee Related FR2650765B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR8910821A FR2650765B1 (en) 1989-08-11 1989-08-11 PROCESS FOR THE CONTINUOUS NON-ADHERENT TREATMENT OF A CORD OF PERMANENT ADHESIVE MATERIAL, IN PARTICULAR OF A THERMO FUSABLE ADHESIVE AT THE EXIT OF AN EXTRUDER MIXER AND DEVICE FOR CARRYING OUT THIS PROCESS AND PRODUCT THUS OBTAINED
AT90402093T ATE94802T1 (en) 1989-08-11 1990-07-20 METHOD AND DEVICE FOR THE CONTINUOUS ANTI-ADHESIVE TREATMENT OF AN ADHESIVE TAPE, IN PARTICULAR OF HEAT-FUSABLE, EXTRUDED ADHESIVE AND THE PRODUCT OBTAINED THEREFORE.
DE90402093T DE69003491T2 (en) 1989-08-11 1990-07-20 Method and device for the continuous anti-adhesive treatment of an adhesive tape, in particular of heat-meltable, extruded adhesive, and the product thus obtained.
DK90402093.0T DK0412867T3 (en) 1989-08-11 1990-07-20 A method of continuous anti-adhesive treatment of a permanent adhesive tape, in particular a thermoselastic adhesive, at the output of a mixing extruder as well as a device enabling the process to be carried out, and the product thus obtained.
EP90402093A EP0412867B1 (en) 1989-08-11 1990-07-20 Process for the continuous antiadhesive treatment of an adhesive band, especially of a thermoplastic, extruded adhesive, and also the device for its processing and the corresponding product
ES199090402093T ES2046736T3 (en) 1989-08-11 1990-07-20 CONTINUOUS NON-STICK TREATMENT PROCEDURE OF A PERMANENT ADHESIVE MATTER CORD, MORE PARTICULARLY OF A THERMOSFUSABLE ADHESIVE AT THE EXIT OF AN EXTRUDER MIXER, AS WELL AS AN INSTALLATION THAT ALLOWS THE USE OF THIS PROCEDURE. SO OBTAINED.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8910821A FR2650765B1 (en) 1989-08-11 1989-08-11 PROCESS FOR THE CONTINUOUS NON-ADHERENT TREATMENT OF A CORD OF PERMANENT ADHESIVE MATERIAL, IN PARTICULAR OF A THERMO FUSABLE ADHESIVE AT THE EXIT OF AN EXTRUDER MIXER AND DEVICE FOR CARRYING OUT THIS PROCESS AND PRODUCT THUS OBTAINED

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FR2650765A1 true FR2650765A1 (en) 1991-02-15
FR2650765B1 FR2650765B1 (en) 1993-07-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130341A1 (en) * 1991-09-12 1993-03-18 Pkl Verpackungssysteme Gmbh SHAPE-RESISTANT MELT ADHESIVE
FR2762308A1 (en) * 1997-01-10 1998-10-23 Kurt Sorg System including co-extruder for production of strand of hot melt self adhesive

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1585091A (en) * 1967-07-05 1970-01-09
FR2349614A1 (en) * 1976-04-29 1977-11-25 Wirsbo Bruks Ab IMPROVEMENTS MADE TO THE STABILIZATION OF CROSS-LINKED POLYOLEFINS
EP0201901A2 (en) * 1985-05-14 1986-11-20 Simro Ag Object coated with synthetic resin and method of manufacturing such
EP0309595A1 (en) * 1987-09-24 1989-04-05 Casimir Kast GmbH &amp; Co. KG Method of making formed objects
EP0338350A2 (en) * 1988-04-08 1989-10-25 Asahi Kasei Kogyo Kabushiki Kaisha Dusting treatment agent, dusting-treated thermoplastic film, and method of dusting treatment for the film

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1585091A (en) * 1967-07-05 1970-01-09
FR2349614A1 (en) * 1976-04-29 1977-11-25 Wirsbo Bruks Ab IMPROVEMENTS MADE TO THE STABILIZATION OF CROSS-LINKED POLYOLEFINS
EP0201901A2 (en) * 1985-05-14 1986-11-20 Simro Ag Object coated with synthetic resin and method of manufacturing such
EP0309595A1 (en) * 1987-09-24 1989-04-05 Casimir Kast GmbH &amp; Co. KG Method of making formed objects
EP0338350A2 (en) * 1988-04-08 1989-10-25 Asahi Kasei Kogyo Kabushiki Kaisha Dusting treatment agent, dusting-treated thermoplastic film, and method of dusting treatment for the film

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130341A1 (en) * 1991-09-12 1993-03-18 Pkl Verpackungssysteme Gmbh SHAPE-RESISTANT MELT ADHESIVE
FR2762308A1 (en) * 1997-01-10 1998-10-23 Kurt Sorg System including co-extruder for production of strand of hot melt self adhesive

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