WO2008095653A1 - Procédé pour réaliser une passivation le long du bord de bandes autocollantes - Google Patents

Procédé pour réaliser une passivation le long du bord de bandes autocollantes Download PDF

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Publication number
WO2008095653A1
WO2008095653A1 PCT/EP2008/000823 EP2008000823W WO2008095653A1 WO 2008095653 A1 WO2008095653 A1 WO 2008095653A1 EP 2008000823 W EP2008000823 W EP 2008000823W WO 2008095653 A1 WO2008095653 A1 WO 2008095653A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
sensitive adhesive
adhesive tape
crosslinking
adhesive
Prior art date
Application number
PCT/EP2008/000823
Other languages
German (de)
English (en)
Inventor
Hansjörg Ander
Thomas Fogel
Thomas Kluge
Heinz-Josef Röser
Peter Harendt
Arno Koeb
Original Assignee
Lohmann Gmbh & Co. Kg
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 Lohmann Gmbh & Co. Kg filed Critical Lohmann Gmbh & Co. Kg
Publication of WO2008095653A1 publication Critical patent/WO2008095653A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/10—Adhesives in the form of films or foils without carriers

Definitions

  • the present invention relates to a method for the edge-side passivation of pressure-sensitive adhesive tapes as well as adhesive tapes produced by this process and their use for bonding components, films, articles and the like.
  • the production of self-adhesive tapes is generally carried out as a wide product by coating a self-adhesive adhesive composition on a suitable support material.
  • the films used in the production of adhesive tapes have a width of about 300 to 2000 mm prior to assembly.
  • the coating of the pressure-sensitive adhesive takes place from solution (aqueous or organic solvents) or by means of a solvent-free process.
  • the self-adhesive composition applied, optionally dried and / or cured and rolled up the coated product into a roll again.
  • the adhesive tape can already be processed before rolling up or in a subsequent separate processing step as a large roll ("Jumboware / Breitware") to corresponding narrow rolls or coils.
  • the cut edges tend to bleed the adhesive, so that the cut edges easily stick to objects that come in contact with you.
  • adhesive emerging at the edges can also stick together the individual adhesive tape layers of the roll.
  • the adhesive tapes can thereby break in or tear, so that the clean removal of the tape from the roll during use or subsequent further processing made difficult or impossible.
  • dirt and dust are also preferably absorbed into the adhesive layer of the adhesive tape. This is particularly disadvantageous when an "invisible", ie visually inconspicuous as possible gluing, for example, in the bonding of glass or transparent plastic plates is desired, the edges of the tape but stand out darkly due to the pollution of the otherwise transparent tape.
  • EP 1 373 423 describes a method for deactivating the adhesive layer of the edge surface of an adhesive tape roll, in which a composition consisting of acrylate oligomers and polyetheracrylate oligomers is applied to the edge surface of the roll (mirror) and cured.
  • the curing of the free-radically curable composition can be carried out by irradiation with ultraviolet radiation, electron radiation or gamma radiation or a combination of the aforementioned types of radiation, which can be contained in the composition of photoinitiators.
  • EP 1 370 623 B1 describes a process for detackifying edge surfaces of a pressure-sensitive adhesive tape roll, which comprises contacting the edge surface with a water-based, free-radically curable composition containing a film-forming agent.
  • the film-forming agent prevents after drying a bonding of the edge surface.
  • the composition can also be applied as a hot melt, which solidifies on cooling.
  • the possibility mentioned above and associated with the same disadvantages exists that the adhesive tape layers of the roll, in particular in the passivation of the mirror of the roll, are interconnected and blocked, so that unrolling during application or further fabrication is impaired. Furthermore, the lacquer layer thus obtained can be damaged in the application of the adhesive tape and the handling of the adhesive tape roll, so that again a part of the pressure-sensitive adhesive side surface is exposed.
  • the present invention therefore an object of the invention to provide a method for edge-side passivation of pressure-sensitive adhesive tapes, which does not have the disadvantages of the known in the prior art method, is easy to apply and an effective protection against sticking with each other and with each other and the fouling of the pressure-sensitive adhesive tape edges offers, so that "invisible", visually inconspicuous bonding with transparent adhesive tapes are permanently possible.
  • the edge-side passivation of the pressure-sensitive adhesive tapes during use should provide lasting protection of the open side surfaces of the adhesive tape against contamination, contact adhesion and migration of foreign matter into the adhesive tape.
  • a further object of the present invention was to provide pressure-sensitive adhesive tapes whose edges were passivated by the method according to the invention and to enable the use of the edge-side passivated pressure-sensitive adhesive tapes for bonding.
  • the object is achieved by a method according to claim 1 of the present invention, by adhesive tapes according to claim 24 and the use thereof according to claim 25.
  • the edges of the pressure-sensitive adhesive tapes are passivated by directly modifying the adhesive composition of the exposed adhesive layer in the area of the adhesive tape edge and thus deactivating the adhesive composition, ie losing its pressure-sensitive adhesive properties.
  • the passivation of the adhesive or modification of the adhesive composition can be carried out in the method according to the invention by chemical or physical methods, these methods comprising the chemical crosslinking and the physical crosslinking of the pressure-sensitive adhesive layer.
  • the chemical crosslinking can be carried out as "external crosslinking" of the functional groups of the adhesive tape with a crosslinker or "internal crosslinking" of the functional groups with one another in the pressure-sensitive adhesive composition, whereby the molecular weight of the polymers in the composition increases.
  • these methods involve the chemical or physical degradation of the pressure-sensitive adhesive structures in the adhesive composition, wherein the molecular weight of the polymers in the composition does not increase.
  • the practice of the methods may further comprise treating the adhesive tape in the edge region with heat (eg, IR radiation), electromagnetic radiation, corpuscular radiation, or surface plasma treatment.
  • the physical passivation of the pressure-sensitive adhesive takes place in a preferred embodiment by electromagnetic radiation, wherein UV radiation (ultraviolet radiation), in particular UV radiation in a wavelength range of 200 to 400 nm, is preferably used.
  • UV radiation ultraviolet radiation
  • UV radiation in particular UV radiation in a wavelength range of 200 to 400 nm
  • the duration and the intensity of the irradiation are adapted according to the properties of the pressure-sensitive adhesive composition, so that a complete passivation of the adhesive tape edge is ensured.
  • the pressure-sensitive adhesive used in this process is preferably a UV-curing pressure-sensitive adhesive.
  • the passivation is by means of IR radiation (infrared radiation), e.g. in thermosetting pressure-sensitive adhesives, or by X-ray or gamma radiation, e.g. in the case of inert or free-radically curable pressure-sensitive adhesive compositions.
  • IR radiation infrared radiation
  • X-ray or gamma radiation e.g. in the case of inert or free-radically curable pressure-sensitive adhesive compositions.
  • the pressure-sensitive adhesive compositions contain these corresponding photoinitiators or sensitizers.
  • the carrier film can generally or only in the edge region receive IR-absorbing components which additionally heat the region to be passivated.
  • corpuscular beams such as electron beams for inducing the crosslinking or degradation of the pressure-sensitive adhesive structures by radical processes are suitable.
  • a special form of deactivation of a surface is the plasma treatment.
  • the plasma can either serve as a radical source for the radical crosslinking of the pressure-sensitive adhesive, or free radicals and functional groups which are largely responsible for the adhesive force of the pressure-sensitive adhesive, in radicals correspondingly long treatment time transfer, which are then reacted to degradable groups or degraded.
  • a polymerizable precursor gas is added to the plasma, which produces a thin, adhesive polymer layer on the treated surface.
  • the plasma can also be admixed with a gaseous reactant which deactivates and "detackifies" the adhesive surface.
  • a crosslinking agent selected from the group consisting of metal complexes, organometallic compounds, di- and polyvalent ones is applied Metal cations, di- and polyisocyanates, carbodiimides, peroxides, epoxides, sulfur, diamides, hydroxyalkylamides, polyfunctional amines, polyfunctional anhydrides, polyfunctional silanes and aziridine derivatives, wherein the crosslinking aid preferably in solution, preferably as a solution in an organic solvent, to the pas - Sivierenden areas of the adhesive tape is applied.
  • the crosslinking aid preferably in solution, preferably as a solution in an organic solvent, to the pas - Sivierenden areas of the adhesive tape is applied.
  • solvent used temperature and other parameters, the depth of penetration into the adhesive layer and thus the degree and extent of passivation can be determined.
  • Aluminum isopropylate, titanium isopropylate and tetra-n-butyl titanate are particularly preferably used as crosslinking aids.
  • the crosslinking aid is preferably applied in an amount of from 0.01 g to 20 g, more preferably from 1 g to 10 g, and particularly preferably from 2 g to 6 g, in each case based on the dry weight of the crosslinking aid and per 100 cm 2 roll mirror surface ,
  • the conditions may be chosen such that only a partial loss of bond strength, i. a reduction in the bond strength is achieved by the passivation process.
  • a preferred embodiment of the process according to the invention provides for the thermal postcrosslinking of the areas of the polymer to be detackified, wherein either a thermal postcrosslinking potential produced by the addition of heat-curing crosslinkers (eg blocked isocyanates and / or peroxides) is present in the polymer or temperature-labile groups are present in the polymer itself ,
  • heat-curing crosslinkers eg blocked isocyanates and / or peroxides
  • passivation by UV radiation wherein photoreactive and / or photolabile groups are present in the polymer or applied to the surface, which react or disintegrate upon UV irradiation and a decrease in the bond strength either by crosslinking the polymers or degradation of responsible for the bond groups.
  • Both the photoreactive compounds and groups as well as the thermo-reactive compounds and groups are preferably selected to be stable under ambient conditions of storage and use, so that the composition of the adhesive coating is stable after processing and application.
  • the passivation of the edges takes place on the roll obtained after rolling up the adhesive tape roll Mirror of the roll, whereby only one or both sides of the roll of tape can be passivated.
  • the passivation takes place "inline" during the coating or packaging.
  • the edges of the coated adhesive tape can be guided, for example, by an irradiation device, a plasma source or a metering device for chemical crosslinking aids and the adhesive of the pressure-sensitive adhesive layer can be passivated in these areas.
  • the thickness of the region where the adhesive tape edge is passivated is not limited, but is preferably in a range ranging from 0.001 ⁇ m to 5 mm in the adhesive tape surface, more preferably from 0.01 ⁇ m to 1 mm, more preferably from 0.1 ⁇ m to 0.5 mm, more preferably from 0.001 mm to 0.1 mm, and particularly preferably from 0.01 to 0.05 mm.
  • the passivation of a wider edge region of an adhesive tape offers the possibility of generating a grip region with reduced or missing adhesive force, which facilitates both the application and the removal of the adhesive tape after use.
  • the in-line method offers the advantage that in the case of double-sided adhesive tapes or stabilized adhesive layers without a support, the edge can be passivated on the top and bottom in the edge region of the adhesive surface.
  • stabilized adhesive layers which are arranged for production on a support, the side lying on the support can be selectively detackified by electromagnetic radiation, if the support is transparent in the corresponding frequency range of the radiation.
  • one side of the adhesive tape is either completely peeled off or a weaker adhesive force of this side of the adhesive tape is established so that an adhesive tape with different adhesive force is formed on both sides, each side being specially made for bonding to a particular material or for a particular application can be.
  • this selective Entklebung is made by a plasma process.
  • the tapes to be passivated by the present process may be single-sided adhesive tapes, double-sided adhesive tapes, transfer tapes, process tapes and stabilized adhesive tape layers without supports, the thickness of the passivatable tapes of the present invention being generally between 15 ⁇ m and 4000 ⁇ m.
  • Suitable adhesives are chemically curing, radiation-curing and thermosetting pressure-sensitive adhesives. Preference is given to using pressure-sensitive adhesives and pressure-sensitive adhesive layers, with solvent-based pressure-sensitive adhesives, water-based adhesive systems me (in particular dispersions), solvent-free pressure-sensitive adhesives or hot-melt pressure-sensitive adhesives of very different composition can be used.
  • pressure-sensitive adhesives based on natural rubber, synthetic rubber, polyolefins, poly (meth) acrylates, polyvinyl derivatives, polyamides, copolyamides, copolyesters, polyurethanes, silicone adhesives, silicone pressure-sensitive adhesives, cellulose derivatives or combinations and mixtures thereof.
  • pressure-sensitive adhesives are preferred which contain functional groups in the polymer, where the functional groups are preferably selected from ester groups, amide groups, acids, hydroxyl groups, amino groups, sulfide groups, halogens and / or multiple bonds.
  • the pressure-sensitive adhesive is a pure acrylate, wherein preferably at least one of the monomers has a free acid function and is particularly preferably acrylic acid.
  • the proportion of acrylic acid and / or methacrylic acid in the adhesive composition is preferably between 1% by weight and 20% by weight, more preferably between 5% by weight and 15% by weight, and particularly preferably between 8% by weight. -% to 12 wt .-%.
  • pressure-sensitive adhesives containing thermally or photochemically activatable crosslinkers are particularly preferred.
  • These pressure-sensitive adhesives may contain conventional additives, such as, for example, tackifier resins, plasticizers, stabilizers, fillers and dyes.
  • Suitable materials for the carrier layer for the adhesive tapes of the invention are polyesters, particularly preferably polyethylene terephthalate (PETP), polyethylenes (PE), polytetrafluoroethylene (PTFE), polypropylenes (PP) or other materials known to the person skilled in the art, provided that they are the respective ones Meet the requirements of the production and processing process.
  • the carrier layer may also be made of textile materials (eg nonwovens, felts, woven fabrics, scrims, knitted fabrics), foams, paper or plastic films (eg polypropylene films, PVC films), or Combinations of the aforementioned materials to be produced.
  • textile materials eg nonwovens, felts, woven fabrics, scrims, knitted fabrics
  • foams eg polypropylene films, PVC films
  • PVC films polypropylene films
  • the thickness of the carrier layer or carrier film is in the range from 20 ⁇ m to 500 ⁇ m, preferably in the range from 30 ⁇ m to 200 ⁇ m, particularly preferably in the range from 40 ⁇ m to 125 ⁇ m, and most preferably at 50 ⁇ m.
  • the adhesive tape strips used in the process may consist essentially of a pressure-sensitive adhesive layer, provided that this layer has sufficient cohesion; in this case they are pressure-sensitive adhesive tapes that stick on both sides but have no backing ("strapless pressure-sensitive adhesive tapes").
  • these strapless pressure-sensitive adhesive tapes in a preferred embodiment, not only the edges but also a surface of the adhesive layer are completely passivated, in order to allow the adhesive tapes to be rolled up without release liners to be interposed.
  • the adhesive tape strip according to the invention has a multilayer structure, it also being possible for a plurality of adhesive layers to lie one above the other. In the case of the passivation of the edges according to the invention, in each case only the uppermost pressure-sensitive adhesive layer is deactivated.
  • the present invention further relates to pressure-sensitive adhesive tape rolls which are produced according to the method according to the invention described above, and to their use for the production of bonds, in particular permanent, hydrolysis-resistant bonds in the bathroom and sanitary sector.
  • a pressure-sensitive adhesive based on a poly (meth) acrylate is coated on a double-sidedly graded siliconized polyester film having a weight per unit area of 100 g / m 2 and a width of 480 mm.
  • the composition in parts by weight is:
  • Example 2 The coated wide fabric is cut by means of a slitter to a width of 5 mm. The narrow rolls obtained are strongly pressure-sensitive on both sides.
  • Example 2 The coated wide fabric is cut by means of a slitter to a width of 5 mm. The narrow rolls obtained are strongly pressure-sensitive on both sides.
  • the side surfaces (mirrors) of the narrow rollers produced according to Example 1 are irradiated on both sides at a distance of 10 cm with a carbon-IR surface radiator (Heraeus) with a surface power of 150 kW / m 2 over different periods of time.
  • a carbon-IR surface radiator Heraeus
  • Example 4 The side surfaces (mirrors) of the narrow rollers produced according to Example 1 are treated on both sides at a distance of 1 cm with an atmospheric plasma (plasma blaster from Tigres Dr. Gerstenberg) with a power of 10 kW over a period of 2 s.
  • an atmospheric plasma plasma blaster from Tigres Dr. Gerstenberg
  • the rolls thus treated are then stored for 1 h at room temperature and the residual adhesion of the passivated side surfaces (roller mirrors) on a non-siliconized polyester film (23 ⁇ m) is determined in vertical storage. On the side surfaces of the adhesive tape roll no residual adhesion could be found.
  • a broad roll produced according to Example 1 (width: 480 mm) is cut from roll to roll into narrow rolls having a width of 25 mm during production with a longitudinal slitting machine and the cut edges of the narrow rolls are cut inline on both sides with an atmospheric plasma with a power of 0, 2 kW per plasma nozzle treated.
  • the results obtained as a function of the web speed are shown in the following Table 3.
  • a pressure-sensitive adhesive based on a poly (meth) acrylate is coated on a double-sidedly graded siliconized polyester film having a weight per unit area of 100 g / m 2 and a width of 480 mm.
  • the composition in parts by weight is:
  • the coated wide fabric is cut by means of a slitter to a width of 15 mm.
  • the narrow rolls obtained are strongly pressure-sensitive on both sides.
  • the pressure-sensitive adhesive tapes produced according to Examples 2-5 and 7 are used to produce an invisible gluing of glass surfaces.

Abstract

La présente invention concerne un procédé pour réaliser une passivation le long du bord de bandes autocollantes, ainsi que des bandes adhésives fabriquées selon ce procédé et leur utilisation pour coller des composants, des feuilles, des objets et similaires.
PCT/EP2008/000823 2007-02-08 2008-02-01 Procédé pour réaliser une passivation le long du bord de bandes autocollantes WO2008095653A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007006251.8A DE102007006251B4 (de) 2007-02-08 2007-02-08 Verfahren zur kantenseitigen Passivierung von Haftklebebändern, nach dem Verfahren hergestellte Haftklebebandrolle und deren Verwendung
DE102007006251.8 2007-02-08

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Cited By (13)

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WO2013039737A2 (fr) 2011-09-14 2013-03-21 3M Innovative Properties Company Procédés de réalisation d'articles avec traitement anti-adhésif
US9343696B2 (en) 2012-02-03 2016-05-17 Lg Chem, Ltd. Adhesive film
WO2016131984A1 (fr) * 2015-02-20 2016-08-25 Tesa Se Procédé pour réduire le caractère collant de la tranche d'un rouleau de ruban adhésif
DE102015226230A1 (de) 2015-12-21 2017-06-22 Tesa Se Transferband zur Reduzierung der Seitenkantenklebrigkeit eines Klebebandes
DE102015226317A1 (de) 2015-12-21 2017-06-22 Tesa Se Transferband mit Sicherheitsmerkmalen für die Seitenkante eines Klebebandes
DE102016212971A1 (de) 2016-07-15 2018-01-18 Tesa Se Reduzierung der Seitenkantenklebrigkeit einer Klebebandrolle
DE102017210066A1 (de) 2017-06-14 2018-12-20 Tesa Se Verfahren zur simultanen Plasmarandverkapselung von mindestens zwei Klebebandseiten
DE102017219310A1 (de) * 2017-10-27 2019-05-02 Tesa Se Plasmarandverkapselung von Klebebändern
DE102017219311A1 (de) * 2017-10-27 2019-05-02 Tesa Se Plasmarandverkapselung von Klebebändern
WO2020003098A1 (fr) 2018-06-26 2020-01-02 3M Innovative Properties Company Élimination du pouvoir collant et décoration des bords de rouleaux de ruban adhésif
WO2020173805A1 (fr) 2019-02-26 2020-09-03 Tesa Se Bande adhésive, comportant au moins deux matières adhésives différentes l'une de l'autre, séparées l'une de l'autre par une couche barrière
EP3819347A1 (fr) * 2019-11-06 2021-05-12 Coroplast Fritz Müller GmbH & Co. KG Procédé de fabrication d'un produit adhésif
EP3589711B1 (fr) 2017-03-02 2022-02-16 Biologische Insel Lothar Moll GmbH & Co. KG Passivation de face latérale

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EP0588180A1 (fr) * 1992-09-15 1994-03-23 Beiersdorf Aktiengesellschaft Utilisation d'un film auto-adhésif pour la fixation temporaire de wafers (dicing tape)
WO2002006413A1 (fr) * 2000-07-13 2002-01-24 3M Innovative Properties Company Feuille adhesive a voile faible
US20020132078A1 (en) * 2001-03-14 2002-09-19 Roy Wong Method of detackifying an edge face of a roll of tape
WO2002074875A1 (fr) * 2001-03-14 2002-09-26 3M Innovative Properties Company Suppression du contact collant du chant de coupe d'un rouleau de ruban au moyen d'une composition durcissant aux rayonnements
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Cited By (25)

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WO2013039737A2 (fr) 2011-09-14 2013-03-21 3M Innovative Properties Company Procédés de réalisation d'articles avec traitement anti-adhésif
WO2013039737A3 (fr) * 2011-09-14 2013-12-27 3M Innovative Properties Company Procédés de réalisation d'articles avec traitement anti-adhésif
CN103827240A (zh) * 2011-09-14 2014-05-28 3M创新有限公司 制备防粘粘合剂制品的方法
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US9343696B2 (en) 2012-02-03 2016-05-17 Lg Chem, Ltd. Adhesive film
WO2016131984A1 (fr) * 2015-02-20 2016-08-25 Tesa Se Procédé pour réduire le caractère collant de la tranche d'un rouleau de ruban adhésif
CN107427859A (zh) * 2015-02-20 2017-12-01 德莎欧洲公司 用于降低胶带卷的卷绕平面粘性的方法
US20180009002A1 (en) * 2015-02-20 2018-01-11 Tesa Se Method for reducing the winding level adhesiveness of an adhesive tape roll
DE102015226230A1 (de) 2015-12-21 2017-06-22 Tesa Se Transferband zur Reduzierung der Seitenkantenklebrigkeit eines Klebebandes
DE102015226317A1 (de) 2015-12-21 2017-06-22 Tesa Se Transferband mit Sicherheitsmerkmalen für die Seitenkante eines Klebebandes
WO2017108623A1 (fr) * 2015-12-21 2017-06-29 Tesa Se Bande de transfert dotée de signes de sécurité pour le bord latéral d'un ruban adhésif
DE102015226317B4 (de) * 2015-12-21 2017-10-12 Tesa Se Transferband mit Sicherheitsmerkmalen für die Seitenkante eines Klebebandes
DE102016212971A1 (de) 2016-07-15 2018-01-18 Tesa Se Reduzierung der Seitenkantenklebrigkeit einer Klebebandrolle
WO2018010930A1 (fr) 2016-07-15 2018-01-18 Tesa Se Réduction de la pégosité des bords latéraux d'un rouleau de ruban adhésif
CN109476961A (zh) * 2016-07-15 2019-03-15 德莎欧洲股份公司 降低胶带卷的侧边缘粘性
CN109476961B (zh) * 2016-07-15 2021-07-20 德莎欧洲股份公司 降低胶带卷的侧边缘粘性
EP3589711B1 (fr) 2017-03-02 2022-02-16 Biologische Insel Lothar Moll GmbH & Co. KG Passivation de face latérale
DE102017210066A1 (de) 2017-06-14 2018-12-20 Tesa Se Verfahren zur simultanen Plasmarandverkapselung von mindestens zwei Klebebandseiten
CN109078819A (zh) * 2017-06-14 2018-12-25 德莎欧洲股份公司 用于等离子体处理至少一个表面的方法和装置
CN109078819B (zh) * 2017-06-14 2021-10-08 德莎欧洲股份公司 用于等离子体处理至少一个表面的方法和装置
DE102017219310A1 (de) * 2017-10-27 2019-05-02 Tesa Se Plasmarandverkapselung von Klebebändern
DE102017219311A1 (de) * 2017-10-27 2019-05-02 Tesa Se Plasmarandverkapselung von Klebebändern
WO2020003098A1 (fr) 2018-06-26 2020-01-02 3M Innovative Properties Company Élimination du pouvoir collant et décoration des bords de rouleaux de ruban adhésif
WO2020173805A1 (fr) 2019-02-26 2020-09-03 Tesa Se Bande adhésive, comportant au moins deux matières adhésives différentes l'une de l'autre, séparées l'une de l'autre par une couche barrière
EP3819347A1 (fr) * 2019-11-06 2021-05-12 Coroplast Fritz Müller GmbH & Co. KG Procédé de fabrication d'un produit adhésif

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