US20110247304A1 - Adhesive packaging - Google Patents
Adhesive packaging Download PDFInfo
- Publication number
- US20110247304A1 US20110247304A1 US13/085,667 US201113085667A US2011247304A1 US 20110247304 A1 US20110247304 A1 US 20110247304A1 US 201113085667 A US201113085667 A US 201113085667A US 2011247304 A1 US2011247304 A1 US 2011247304A1
- Authority
- US
- United States
- Prior art keywords
- threads
- plastic film
- hot melt
- packaged
- melt adhesive
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
- B65B63/08—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for heating or cooling articles or materials to facilitate packaging
Definitions
- the present invention relates to a method for packaging hot melt adhesive, in particular sticky hot melt adhesive or substances that are tacky at ambient temperature as a material to be packaged in a plastic film.
- Hot melt adhesives are solvent-free adhesives which for use are brought, by applying heat, into a liquid or viscous state in which they can moisten the material surfaces to be glued and to which they adhere securely after cooling and setting.
- Hot melt adhesives are generally made of a mixture of materials which during production are fused together and then packaged.
- hot melt adhesives which have sticky properties at ambient temperature or below are used. These adhesives are also called PSA adhesives, and this stands for “Pressure Sensitive Adhesive”. The packaging and portioning of these sticky hot melt adhesives gives rise to problems due to the tacky surface of the adhesive portions.
- the film materials used must have a low fusion point and moreover must not appreciably worsen the adhesive properties of the hot melt adhesive.
- hot melt adhesive which is introduced directly into the film packaging while still hot separates.
- EP 0 649 718 a method is proposed according to which the hot melt adhesive is packaged and the adhesive portions thus obtained are surface-treated with an anti-adhesion substance, cooled in a cooling bath and then packaged in foil bags.
- a further method for packaging hot melt adhesive is described in DE 199 13 034, according to which the hot melt adhesive is introduced directly into a film tube which is located in a water bath during the filling process. In this way the outside of the film tube is sufficiently cooled in order to prevent immediate fusing due to the hot melt adhesive which has been poured in and is still hot. Sections of the film bag are concertinaed by means of transport rollers in order to form individual portions, and are heat-sealed at these points. It is a disadvantage with this method that the hot melt adhesive is only available in relatively large portions, and that these portions must first of all be dried after removal from the water bath. Furthermore, this method can only be implemented with packaging films which have a relatively high fusion point so that the latter do not fuse during filling despite the cooling in water.
- the object forming the basis of the present invention is to provide a method by means of which the disadvantages known from the prior art can be eliminated.
- one should be able to dispense with the use of anti-adhesion surfaces coatings when packaging sticky hot melt adhesives.
- complex drying steps should be avoided, and it should be made possible to produce different forms of administration and portion sizes for hot melt adhesive portions.
- the present object is achieved by a method of the type specified at the start, which comprises the following steps:
- the hot melt adhesive In order to fuse the hot melt adhesive the latter can be used in any form or the hot melt adhesive can be mixed from its individual components, i.e. be produced directly.
- Fusion Production from the individual components can take place before or during fusion.
- the fused material is advantageously mixed by stirring, for example.
- a plurality of materials can be packaged, for example resins and the like, the packaging of hot melt adhesives being a preferred application.
- the metering in portions can take place in different versions.
- the fused material can be applied to the cooling belt in strand form, in the form of cushions, or in pastillated form.
- This can be implemented, for example, by means of a heated extruder, by means of one or more nozzles, such as for example in a pastillating device.
- Metering in portions is understood to mean both metering in defined portions, for example by weight, and metering in different portions. With portions of a consistent weight the latter can be combined to forma desired package size by counting. Portions of different weights can be combined to form desired package sizes, for example by belt weighers.
- the heat conducting threads are covered as far as possible at least on the side coming into contact with the material to be packaged.
- This is understood as meaning that the heat conducting threads are covered practically entirely by the polymer matrix, and can only stick out of the polymer matrix at individual points, in particular the bend points e.g. with a plain weave of the textile carrier.
- the coverage of the heat conducting threads with the polymer matrix on the corresponding side of the cooling belt is at least 75%, in particular at least 85 to 95%, preferably 95% to total coverage.
- the heat conducting threads of the cooling belt enable rapid conveyance of heat to the opposite side of the cooling belt so that cooling of the material and of the hot melt adhesive by a cooling bath, such as for example a water bath, is not required.
- a cooling bath such as for example a water bath
- the heat discharged to here can be discharged for example by direct contact with a cooling medium, such as by spraying or indirectly by contact with a cooled plate or roller.
- the heat conducting threads which are generally at least partially formed from metal threads or carbon fibres, do not come directly into contact with the material or hot melt adhesive. This is significant in so far as, depending on the composition of the material of the cooling threads, the hot melt adhesive can have an adhesion capability of such a level that it is not possible in this case to simply remove the adhesive portions from the cooling belt.
- the cooling belts that can be used according to the invention can advantageously be produced such that the textile carrier is produced first of all, for example by interweaving warp and weft threads into a plain weave. This textile carrier is then passed through a V-shaped slot in which the raw material of the polymer matrix is located which saturates the textile carrier. Solutions or dispersions of the polymers of the polymer matrix in water or organic solvents, for example, are used as a raw material for the polymer matrix.
- reactive prepolymers can be used for the production of the polymer matrix which after saturating the textile carrier abreact, thus forming the polymer matrix.
- all reaction types in particular radical polymerisation, polyaddition or polycondensation, can be considered for the polymerisation reaction taking place here, the latter for example with the separation of water, methanol, ethanol, acetic acid or other typical leaving groups.
- the substances specified above are known to the person skilled in the art from the field of adhesives and joint sealing compounds.
- the polymerisation reaction can be accelerated by irradiating with UV or IR light and/or by supplying heat.
- a polymer matrix according to the invention can be produced, for example, by hardening two-component silicone at increased temperatures of approximately 200° C.
- the removal of the material portions from the cooling belt prior to packaging is achieved, for example, simply by discarding on a deflection roller.
- the discarding can additionally be assisted by a scraper which does not necessarily have to, but can touch the cooling belt surface.
- the polymer matrix of the cooling belt and the scraper should advantageously be made of a material to which the material does not or hardly adheres.
- the selection of the material for the polymer matrix is ultimately dependent upon the type of material or hot melt adhesive to be packaged, and so the person skilled in the art can determine appropriate polymer matrix materials by means of simple adhesion trials. Silicone elastomers, fluoroelastomers and/or fluorosilicone elastomers are particularly preferred as material for the polymer matrix due to their anti-adhesive properties.
- the scraper can also be produced from these materials or also from a sheet metal which can be provided with these polymers or with a teflon layer.
- Both the cooling belt and the scraper can be subjected to corona or plasma treatment in order to further reduce the adhesion of the material or the hot melt adhesive.
- the heat conducting threads of the cooling belt are made at least partially of metals or metal alloys which are selected in particular from iron, steel, copper, aluminium, silver, brass, bronze and the like. It is also possible to use heat conducting threads made of carbon. These materials provide the cooling belt on the one hand with sufficient mechanical strength, and so dimensional stability, and on the other hand have a high heat conducting capability with which the heat of the fused material can be discharged quickly from one side of the cooling belt to the opposite side of the cooling belt.
- the textile carrier of the cooling belt comprises a fabric in plain weave in which the heat conducting threads at least partially form warp threads.
- the warp threads bend around the weft threads so that the warp threads, and so the heat conducting threads, define the upper and lower surface of the textile carrier.
- the bending points of the heat conducting threads are therefore located directly next to the surfaces of the cooling belt, by means of which good head conduction is achieved between the two flat sides of the cooling belt.
- Other forms of the textile carrier are also possible, such as a fabric in twill or satin weave.
- the carrier can also be made of lattice weaves or knitted fabrics.
- the textile carrier has weft threads or cross threads made of a material selected from coated and/or non-coated polymer, carbon and/or metal fibres, multifilaments or monofilaments.
- Suitable metal fibres are made, for example, of iron, steel, copper, aluminium, silver, brass, bronze or the like. Silicones, fluoro- and/or fluorosilicone elastomers, for example, can be used for the coating of the aforementioned fibres.
- the warp and weft threads used within the framework of the present invention can have core threads which are wrapped at least by a wire or a polymer fibre.
- wires or polymer fibres can be stranded or braided around the core threads.
- the individual fibres of these threads can have a coating made of the substances specified above. It is also possible to provide warp and weft threads of the type specified above with a surface coating of the substances specified above after the wrapping, stranding or braiding.
- cooling belt are cooled on one or both sides by means of a cooling device, preferably at least on the side which lies opposite the side coming into contact with the material or the hot melt adhesive.
- a cooling device preferably at least on the side which lies opposite the side coming into contact with the material or the hot melt adhesive.
- Cooling rolls or a cooled plate can be considered as a cooling device, over which the cooling belt is passed and which can be cooled by means of cooling agents.
- the opposite side can also be cooled by direct contact with a cooling medium, such as for example by spraying.
- a cooling medium such as for example by spraying.
- an appropriate spraying device for the cooling agent is provided. Combinations of these cooling devices are also possible.
- the material or the hot melt adhesive is sticky at ambient temperature, in particular at 10° C. or even at 0° C., and the material and adhesive portions are preferably removed from the cooling belt in the sticky state and packaged in the plastic film.
- hot melt adhesives which still have sticky properties even at temperatures of below 0° C., such as for example at ⁇ 5° C., can also be portioned and packaged.
- the individual adhesive portions can partially sinter together after packaging. In this way on the one hand the enlarged surface of the adhesive portions is obtained, which enables rapid fusing. On the other hand, in this way less air remains in the packaging and between the adhesive portions so that space-saving packaging is guaranteed.
- the material to be packaged is a hot melt adhesive that contains a polymer component which is selected from polyolefins, in particular polyethylene, ethylene vinyl acetate copolymers, polyamides, polyesters and polyester elastomers, polyurethanes, polyacrylates and/or styrene copolymers or block copolymers or mixtures of the latter.
- a polymer component which is selected from polyolefins, in particular polyethylene, ethylene vinyl acetate copolymers, polyamides, polyesters and polyester elastomers, polyurethanes, polyacrylates and/or styrene copolymers or block copolymers or mixtures of the latter.
- the hot melt adhesive can contain auxiliary materials selected from anti-foaming agents, wetting agents, colorants, stabilisers, softening agents, preservatives and/or resins providing stickiness, in particular colophony resins and/or derivatives of the latter.
- the plastic film is suitable for fusing synchronously with the hot melt adhesive.
- the plastic film contains in particular polymers selected from polyethylene, polyvinyl acetate, polyamides, polybutadiene, polyesters, polycarbonates, atactic poly-alpha-olefins, thermoplastic polyacrylamides, polyacrylonitriles, polymethylpentenes, polyphenylene sulfides, aromatic polyurethanes, polystyrene acrylonitriles, polyethylene terephthalates and co- and terpolymers of the latter, in particular ethylene vinyl acetate.
- the plastic film used within the framework of the method according to the invention preferably has a fusion temperature of 25 to 100° C., in particular 30 to 70° C., preferably 35 to 65° C.
- the use of these films is particularly advantageous because upon the fusion of the hot melt adhesive the latter pass quickly into the liquid form, and so release the hot melt adhesive packaged in the films for fusion.
- Plastic films with these low fusion points can partially not be used with the methods known thus far from the prior art because during packaging the hot melt adhesive still has such a high temperature that the film material is fused by this.
- the plastic films used comprise at least 5% by weight ethylene vinyl acetate copolymer, for example more than 10% by weight, preferably more than 25% by weight, particularly 35% by weight or more.
- the respectively remaining portion is preferably formed from polyethylene.
- Particularly suitable are mixed films of ethylene vinyl acetate copolymer (EVA) and polyethylene (PE) with a mass ratio of ethylene vinyl acetate to polyethylene of 5:95 to 50:50, particularly of 25:75 to 40:60, preferably of 35:65.
- the vinyl acetate content in the ethylene vinyl acetate copolymer used is advantageously at least 30 mole %, preferentially at least 40 mole %, preferably 30 to 70 mole %, particularly preferably from 40 to 60 mole %, very particularly preferably 50 mole %.
- these polymers and polymer mixtures of ethylene vinyl acetate and polyethylene are characterised above all by the fact that they do not generally have any negative impact upon the adhesive properties of the hot melt adhesive if the film material is fused and used together with the hot melt adhesive.
- the packaging of the material and hot melt adhesive portions in the plastic film can be implemented in the simplest case by wrapping or folding in.
- the plastic films used within the framework of the present invention are, however, provided in the form of bags or a film tube, it being possible to produce individual bags from the latter by heat sealing and separating after packaging the hot melt adhesive.
- the plastic film When packaging the material portions the plastic film is generally sealed and, if so desired, the air is removed as far as possible, this being realised, for example, by sucking out the air while at the same time shaking.
- the closure is preferably implemented by heat sealing because no additional auxiliary materials such as clips and the like are required for this which would interfere when (re-) fusing.
- the plastic films used within the framework of the present invention can in principle have any film thickness suitable for the packaging of hot melt adhesives, for example a thickness of 5 to 200 ⁇ m, in particular of 10 to 100 ⁇ m.
- plastic foil nor the material portions have any surface treatment with anti-adhesive substances, such as for example silicone oils, tensides and the like. Neither is any adhesion-reducing surface treatment required, such as for example corona or plasma treatment.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Wrappers (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010003896A DE102010003896A1 (de) | 2010-04-13 | 2010-04-13 | Klebstoffkonfektionierung |
DE102010003896.2 | 2010-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110247304A1 true US20110247304A1 (en) | 2011-10-13 |
Family
ID=44009890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/085,667 Abandoned US20110247304A1 (en) | 2010-04-13 | 2011-04-13 | Adhesive packaging |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110247304A1 (fr) |
EP (1) | EP2377765B1 (fr) |
CN (1) | CN102275659A (fr) |
DE (1) | DE102010003896A1 (fr) |
TW (1) | TW201206772A (fr) |
ZA (1) | ZA201102670B (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120017544A1 (en) * | 2009-02-19 | 2012-01-26 | Mitsubishi Gas Chemical Company ,Inc. | Storage method |
US20160137371A1 (en) * | 2012-05-17 | 2016-05-19 | Henkel IP & Holding GmbH | Integral hot melt adhesive packaging films and use thereof |
EP3218282A4 (fr) * | 2014-11-14 | 2018-06-13 | Gala Industries Inc | Film pour ensacher des matières collantes |
US10619081B2 (en) | 2017-05-22 | 2020-04-14 | H.B. Fuller Company | Hot melt adhesive composition |
US20200307880A1 (en) * | 2017-12-18 | 2020-10-01 | Henkel Ag & Co. Kgaa | Film-wrapped type hot melt adhesive |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102559093A (zh) * | 2011-12-23 | 2012-07-11 | 吴江德邦科技化工有限公司 | 一种粘合剂及生产方法 |
JP6404331B2 (ja) * | 2013-05-29 | 2018-10-10 | エイチ.ビー.フラー カンパニー | パッケージ入りホットメルト感圧接着剤 |
DE102015121562B4 (de) * | 2015-12-10 | 2021-05-06 | Coroplast Fritz Müller Gmbh & Co. Kg | Hochtemperaturbeständiges farbiges, insbesondere orangefarbiges, Klebeband, Verfahren zu seiner Herstellung, Verwendung eines Trägers zu seiner Herstellung sowie Verwendung des Klebebandes zur Herstellung von Kabelbäumen |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US6006497A (en) * | 1997-03-26 | 1999-12-28 | Reichhold Chemicals, Inc. | Methods and apparatus for preparing a hot melt adhesive |
US6294249B1 (en) * | 1994-09-09 | 2001-09-25 | 3M Innovative Properties Company | Packaged pre-adhesive composition |
EP1721842A1 (fr) * | 2005-05-10 | 2006-11-15 | Heimbach GmbH & Co. KG | Convoyeur à bande, dispositif de refroidissement et de chauffage pour un tel convoyeur à bande et procédé pour la production de produits au moyen d'un convoyeur à bande |
US20110244232A1 (en) * | 2010-04-02 | 2011-10-06 | Hall Gregory K | Processes for Forming Adhesive Blend Compositions |
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FR2489351A1 (fr) * | 1980-09-04 | 1982-03-05 | Swift Et Cie | Procede de conditionnement d'une colle thermofusible constituant adhesif permanent |
DE3150171A1 (de) * | 1981-12-18 | 1983-06-30 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von blockcopolymerisaten auf basis von ethylencopolymerisaten, blockcopolymerisate und deren verwendung als additive fuer thermoplaste und mineraloele oder als schmelzhaftkleber |
JPS599239A (ja) * | 1982-07-05 | 1984-01-18 | 三ツ星ベルト株式会社 | ベルト用織物 |
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WO1992002348A1 (fr) | 1990-08-01 | 1992-02-20 | H.B. Fuller Licensing And Financing Inc. | Procede de conditionnement d'une composition adhesive et article conditionne correspondant |
DE9318554U1 (de) * | 1993-12-06 | 1994-02-17 | Jowat Lobers U. Frank Gmbh & Co Kg, 32756 Detmold | Anlage zum Beschichten von in Einzelvolumina separierten Kleber, insbesondere Schmelzhaftkleber |
DE19528369A1 (de) * | 1994-08-08 | 1996-02-15 | Basf Ag | Polypropylenhaftkleber |
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DE19913034A1 (de) | 1998-05-13 | 1999-11-18 | Henkel Kgaa | Verfahren zum Verpacken von Schmelzklebstoff |
AU2347700A (en) | 1998-12-10 | 2000-06-26 | Henkel Kommanditgesellschaft Auf Aktien | A process for packaging pressure-sensitive hotmelt adhesive |
DE29901565U1 (de) * | 1999-01-29 | 1999-04-08 | Santrade Ltd., Luzern | Vorrichtung zum Herstellen und Umhüllen von Schmelzenportionen |
DE10004174A1 (de) * | 2000-02-01 | 2001-08-09 | Santrade Ltd | Vorrichtung zur Herstellung und Umhüllung von Schmelzenportionen |
US7350644B2 (en) * | 2002-10-21 | 2008-04-01 | National Starch And Chemical Investment Holding Corporation | Multi-layer film packaging of hot melt adhesive |
US7759266B2 (en) * | 2007-07-13 | 2010-07-20 | Fenner Dunlop Americas, Inc. | Dual crimped warp fabric for conveyor belt applications |
-
2010
- 2010-04-13 DE DE102010003896A patent/DE102010003896A1/de not_active Ceased
-
2011
- 2011-03-21 TW TW100109564A patent/TW201206772A/zh unknown
- 2011-03-30 EP EP11160364.3A patent/EP2377765B1/fr not_active Not-in-force
- 2011-04-11 ZA ZA2011/02670A patent/ZA201102670B/en unknown
- 2011-04-13 CN CN2011100965383A patent/CN102275659A/zh active Pending
- 2011-04-13 US US13/085,667 patent/US20110247304A1/en not_active Abandoned
Patent Citations (6)
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US6294249B1 (en) * | 1994-09-09 | 2001-09-25 | 3M Innovative Properties Company | Packaged pre-adhesive composition |
US6006497A (en) * | 1997-03-26 | 1999-12-28 | Reichhold Chemicals, Inc. | Methods and apparatus for preparing a hot melt adhesive |
US6044625A (en) * | 1997-03-26 | 2000-04-04 | Reichhold Chemicals, Inc. | Method of preparing a hot melt adhesive |
US6230890B1 (en) * | 1997-03-26 | 2001-05-15 | Reichhold Chemicals, Inc. | Packaged adhesive mass |
EP1721842A1 (fr) * | 2005-05-10 | 2006-11-15 | Heimbach GmbH & Co. KG | Convoyeur à bande, dispositif de refroidissement et de chauffage pour un tel convoyeur à bande et procédé pour la production de produits au moyen d'un convoyeur à bande |
US20110244232A1 (en) * | 2010-04-02 | 2011-10-06 | Hall Gregory K | Processes for Forming Adhesive Blend Compositions |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120017544A1 (en) * | 2009-02-19 | 2012-01-26 | Mitsubishi Gas Chemical Company ,Inc. | Storage method |
US8844247B2 (en) * | 2009-02-19 | 2014-09-30 | Mitsubishi Gas Chemical Company, Inc. | Storage method |
US20160137371A1 (en) * | 2012-05-17 | 2016-05-19 | Henkel IP & Holding GmbH | Integral hot melt adhesive packaging films and use thereof |
US10364079B2 (en) * | 2012-05-17 | 2019-07-30 | Henkel IP & Holding GmbH | Integral hot melt adhesive packaging films and use thereof |
EP3218282A4 (fr) * | 2014-11-14 | 2018-06-13 | Gala Industries Inc | Film pour ensacher des matières collantes |
US10619081B2 (en) | 2017-05-22 | 2020-04-14 | H.B. Fuller Company | Hot melt adhesive composition |
US20200307880A1 (en) * | 2017-12-18 | 2020-10-01 | Henkel Ag & Co. Kgaa | Film-wrapped type hot melt adhesive |
Also Published As
Publication number | Publication date |
---|---|
EP2377765B1 (fr) | 2013-06-05 |
ZA201102670B (en) | 2011-12-28 |
CN102275659A (zh) | 2011-12-14 |
TW201206772A (en) | 2012-02-16 |
EP2377765A2 (fr) | 2011-10-19 |
DE102010003896A1 (de) | 2011-10-13 |
EP2377765A3 (fr) | 2011-11-02 |
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Legal Events
Date | Code | Title | Description |
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Owner name: HEIMBACH GMBH & CO.KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KALDENHOFF, RALF, DR.;ROBENS, ANDREAS;SIGNING DATES FROM 20110405 TO 20110408;REEL/FRAME:026127/0339 Owner name: KAISER STEEL BELT SYSTEMS GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KALDENHOFF, RALF, DR.;ROBENS, ANDREAS;SIGNING DATES FROM 20110405 TO 20110408;REEL/FRAME:026127/0339 |
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