EP1943149A1 - Verfahren zum entfernen der verpackung von schmelzhaftklebstoffen - Google Patents
Verfahren zum entfernen der verpackung von schmelzhaftklebstoffenInfo
- Publication number
- EP1943149A1 EP1943149A1 EP06776912A EP06776912A EP1943149A1 EP 1943149 A1 EP1943149 A1 EP 1943149A1 EP 06776912 A EP06776912 A EP 06776912A EP 06776912 A EP06776912 A EP 06776912A EP 1943149 A1 EP1943149 A1 EP 1943149A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- adhesive
- packaging
- hot melt
- cooled
- packaging material
- 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
Links
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 36
- 239000000853 adhesive Substances 0.000 title claims abstract description 31
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 31
- 239000005022 packaging material Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 16
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 4
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- 239000004831 Hot glue Substances 0.000 claims description 63
- 239000012943 hotmelt Substances 0.000 claims description 45
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 34
- 238000000465 moulding Methods 0.000 claims description 19
- 239000000123 paper Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 9
- 239000011111 cardboard Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims 1
- 230000004927 fusion Effects 0.000 abstract 3
- 239000011347 resin Substances 0.000 description 7
- 239000001993 wax Substances 0.000 description 7
- 239000005021 flexible packaging material Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 229920005601 base polymer Polymers 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- VSKJLJHPAFKHBX-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 VSKJLJHPAFKHBX-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229920013640 amorphous poly alpha olefin Polymers 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920006254 polymer film Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 description 1
- 235000007173 Abies balsamea Nutrition 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004857 Balsam Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000013032 Hydrocarbon resin Substances 0.000 description 1
- 244000018716 Impatiens biflora Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920002614 Polyether block amide Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- KBAYQFWFCOOCIC-GNVSMLMZSA-N [(1s,4ar,4bs,7s,8ar,10ar)-1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,7,8,8a,9,10,10a-dodecahydrophenanthren-1-yl]methanol Chemical compound OC[C@@]1(C)CCC[C@]2(C)[C@H]3CC[C@H](C(C)C)C[C@H]3CC[C@H]21 KBAYQFWFCOOCIC-GNVSMLMZSA-N 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000012164 animal wax Substances 0.000 description 1
- 230000000181 anti-adherent effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 150000002314 glycerols Chemical class 0.000 description 1
- 229920006270 hydrocarbon resin Polymers 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 239000012184 mineral wax Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000004447 silicone coating Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 239000012178 vegetable wax Substances 0.000 description 1
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
- B65B69/00—Unpacking of articles or materials, not otherwise provided for
Definitions
- the invention relates to a method for removing the packaging of permanently tacky hot melt adhesives, so-called hot melt adhesives.
- a process is described for quickly and easily separating such hot-melt pressure-sensitive adhesives from the packaging.
- Hot melt pressure sensitive adhesives are known in the literature.
- WO 2004/013244 A1 describes hot-melt pressure-sensitive adhesives based on radiation-crosslinkable binders. A field of application for such hot-melt pressure-sensitive adhesives is described as applying to self-adhesive labels.
- hot melt pressure sensitive adhesives are described in US 5,204,390 consisting of a thermoplastic resin together with a plasticizer and a tackifier resin.
- hot melt pressure sensitive adhesives are also disclosed in WO 01/98427 A1. As a use, the use as an adhesive for self-adhesive labels is described.
- the object of the invention is therefore to provide a method to allow a cheap and simple packaging of strongly permanent adhesive hot melt adhesives and at the same time to allow easy and easy unpacking of the hot melt adhesives often present in block form.
- the object is achieved by a method for unpacking hotmelt adhesives, in which the hotmelt PSA is present as a shaped body and these shaped bodies are enclosed with a packaging material, wherein the packaging material on the side facing the hotmelt adhesive adhesive has an adhesion-reducing surface, and the hot melt adhesive before removing the enveloping Packaging material is cooled to a temperature at which the hot melt adhesive with reduced pressure tack is present.
- An embodiment of the present invention employs flexible packaging materials. These are intended to envelop the hot-melt pressure-sensitive adhesive, can adapt to the shape of the adhesive and can be removed from the hotmelt adhesive molding according to the method of the invention. Another embodiment of the invention works with solid containers. In this, the hotmelt adhesive can be filled. Such packages should have a shape that has an at least straight shape from an openable side, but preferably a slightly conical tapered shape. After the cooling according to the invention, the hot melt pressure-sensitive molded articles can be easily removed from the solid packaging.
- the particularly flexible packaging materials which are suitable for a preferred procedure according to the invention are known to the person skilled in the art. It is usual paper, cardboard or foil material. This should be so flexible that they can assume the particular shape of the hot-melt pressure-sensitive adhesive to be packaged. For example, round or square shaped bodies are to be enveloped can.
- the packaging should also be able to adapt to a possibly uneven surface. Furthermore, the material should be removed during removal.
- the packaging material suitable according to the invention should be resistant to tearing, ie the tensile strength or tensile strength of the flexible material should be so great that it is higher than the force required to overcome the separation of flexible packaging material and hot-melt adhesive at a temperature corresponding to the process of the invention.
- the tensile strength should be so high in practice that film or paper in large pieces or preferably in the whole can be deducted. Possibly.
- predetermined breaking points may be predetermined, for example on edges, to allow a quick removal.
- cardboard packaging these should also be in pieces, eg. B. entire sides, can be removed.
- the tear strength must be present at the temperatures of the unpacking, for example from +10 ° C to -200 ° C, preferably from 0 ° C to -100 ° C.
- Suitable films may for example be made of polyethylene, polypropylene, polyamide or other commercially available polymer films. The polymer films may by themselves have a low adhesion to the hot-melt pressure-sensitive adhesive.
- Suitable paper materials are also known. These should be provided with an adhesion-reducing coating at least on the side facing the hot-melt adhesive.
- Such films, paper, cardboard can consist of one layer, preferably they should be composed of at least two different layers. These are therefore two-layered or multi-layered materials, wherein the coating should contain adhesion-reducing substances. Examples of such substances are known to the person skilled in the art.
- the coatings may be silicone compounds or siliconized materials. However, it is also possible to apply perfluorinated coating materials. These coatings should adhere firmly to the packaging material, only the adhesion to the adhesive should be reduced.
- the surfaces facing the hot melt adhesive are smooth, but it is also possible to use surfaces having an adhesion-reducing structure.
- Such papers are commercially available under the name Laufenberg, NSA 1350/56 BF from B. Laufenberg GmbH.
- Suitable coated paperboard materials are also known, e.g. B. under the name Packomelt 86946, silicon coated the company Pacomelt GmbH.
- the shape of the hotmelt adhesive bodies to be packaged in this embodiment is variable. They should only have a sufficient size and shape, so that the removal of the packaging from the surface of the moldings is made possible cost.
- the shaped bodies can be cuboid, cubic, cylindrical or in the form of a strand or block, for example. There are also irregular shapes possible. In principle, strand-like or angular packaging forms are particularly favorable for dense storage.
- these hot-melt adhesive moldings must be enveloped on the contacting sides with a packaging material suitable according to the invention. Possibly. it is expedient to wrap these coated adhesive moldings individually or in a plurality with another outer packaging.
- suitable films or paper first in an additional external form.
- These may be tubular structures or barrel-shaped or square outer packaging. These are designed on the inner surface with the packaging material suitable according to the invention, after which, if appropriate, the still flowable, hot melt adhesive can be introduced.
- the hotmelt adhesive it is also possible to allow the hotmelt adhesive to solidify into molds and then to coat it in the cold with a packaging material suitable according to the invention.
- the hot melt pressure sensitive adhesives are filled into solid containers. These are generally on the inside with an adhesion-reducing coating, for. B. a silicone coating or a plastic coating provided. Furthermore, it is necessary that the packages are open at least on one side.
- the opening must have a size that corresponds to the maximum cross section of the package Holhl stresses. This can be, for example, the opening of a barrel lid. It is also possible for smaller containers to provide a tear line on the container on which a part of the container can be separated.
- the container itself may preferably be made of metal or plastic, but it is also possible to use dimensionally stable, preferably multi-layer cardboard packaging.
- the inside of the solid packaging materials should be substantially smooth. There should be no protrusions, dents, beads or the like on the wall of the packaging body.
- the side surfaces should be smooth, so that a removal of the hot melt adhesive molded article is easily possible.
- the side walls with respect to the intended opening of the packaging means should be at least straight, cylindrical in rotationally symmetrical bodies. Preferably, however, it is also expedient that the side walls are slightly tapered away from the surface to be opened. This is si cherograph that the molding can be removed without mechanical interference or entanglement of the packaging material.
- Such packaging materials are already known. These may be conventional drums, barrels, hobbocks or canisters made of coated metal, plastic or cardboard materials, the side walls being smooth, cylindrical or slightly conical. Another possibility is, for example, an embodiment of pyramidally shaped round or rectangular shaped bodies, wherein the large bottom side is to be provided as the opening side.
- Typical hot melt pressure sensitive adhesives are composed of base polymers, tackifying resins, optionally plasticizers, waxes, oils and various additives. The adhesives should be solid at room temperature and melt at elevated temperatures, for example from 80 0 C. However, they should have a high adhesion to the substrate at room temperature, ie a high surface tack.
- base polymers are elastomeric or thermoplastic polymers.
- elastomers are acrylate, polyester urethane, ethylene acrylate, butyl rubber; Natural rubber; Ethylene-propylene copolymers; Ethylene-vinyl acetate copolymers or styrene copolymers such as styrene-isoprene-styrene (SIS), styrene-butadiene-styrene (SBS), SEBS or SIBS block copolymers;
- thermoplastic binders are ethylene-vinyl acetate (EVA) polymers, amorphous poly- ⁇ -olefins (APAO), polyurethanes, polyether esters and polyether amides. Particularly suitable are also the thermoplastic elastomers.
- the resin is said to increase the tackiness of the base polymer and to improve the compatibility of the hot melt adhesive components.
- these are, for example, hydroabietyl alcohol and its esters; modified natural resins of balsam resin, tall resin, root resin, partially hydrogenated rosin; Acrylic acid copolymers, preferably styrene-acrylic acid copolymers or resins based on functional hydrocarbon resins.
- Waxes may also be included in the hot melt pressure sensitive adhesive.
- the wax used may be natural, chemically modified or synthetic origin. Vegetable waxes, animal waxes can be used as natural waxes, mineral waxes or petrochemical waxes as synthetic waxes. Also chemically modified waxes are known.
- hotmelt adhesives often contain plasticizers. These may be, for example, monohydric or polyhydric alcohols, in particular Polyalkylene glycols, mineral oils or esters of organic carboxylic acids, such as liquid polyesters, glycerol esters or esters of aromatic dicarboxylic acids.
- hot melt adhesive customary auxiliaries and additives can be added. These are, for example, stabilizers, color pigments, fillers, adhesion promoters, catalysts or initiators.
- the hot melt pressure sensitive adhesives used in the present invention have a glass transition temperature (Tg) of about -100 0 C to about 50 0 C (measured by DSC).
- Tg glass transition temperature
- M N average molecular weight of the base polymers is about 5,000 to about 500,000 g / mol (as determined by GPC).
- the hot-melt pressure sensitive adhesives can build up the adhesion due to their melting behavior, but they can also be reactive hot melt pressure sensitive adhesives.
- Hot-melt adhesives based on, for example, styrene-isoprene-styrene block copolymers are described in EP 0 451 920; those based on polyacrylate copolymers are described, for example, in WO 02/10307.
- Adhesives of the type mentioned are generally known to the person skilled in the art.
- the hot melt pressure sensitive adhesives can be prepared by known methods.
- the components are melted individually or successively, homogenized and then discharged from the mixing unit. They can be discharged, for example in the form of strands on, for example, a cooled base, in the case of non-reactive hot melt adhesives, for example, in a cooling liquid. After the hot melt adhesives have solidified, they can be packaged and packaged. Furthermore, it is possible to pour the liquid hot melt pressure sensitive adhesives into molds. If necessary, the molds can be cooled from the outside in order to allow rapid solidification of the hot-melt adhesives.
- suitable flexible paper, cardboard or foil materials can be done in different ways. For example, it is possible to coat the discharged and solid adhesive moldings with a flexible material. This can be done at usual temperatures. However, it is also possible to cool the adhesive blocks in advance and pack in the cold with less surface adhesion in appropriate flexible packaging materials.
- the molds in which the hotmelt adhesive is intended to solidify are lined with packaging materials suitable according to the invention before the hotmelt adhesive is introduced. Then it is possible to remove these packaged directly from the molds after solidification, in which case possibly the top is still covered and packaged.
- the adhesive is filled directly into stable packaging.
- This package may be provided on the inside with a suitable surface coating. It is in this way so the packaging later removed from the hot melt adhesive.
- the hotmelt adhesives are additionally packed in stable containers as outer packaging. Also in this case it is necessary to pack the hotmelt PSA in accordance with the invention suitable, non-adhesive, flexible tear-resistant materials. These shaped bodies can then remain in the outer packaging for transport and storage.
- the hot-melt adhesive molded bodies packaged according to the invention can have any desired shape. They are provided on parts of the surface or on all surfaces with a paper, cardboard or foil packaging according to the invention and then do not adhere to each other. They can therefore be stacked or individually or packaged in several additional packaging.
- Hot melt adhesive tablets packaged in accordance with the invention can be transported and stored at normal temperatures to the user. This can be done at room temperature. However, it is also possible that the hot-melt pressure sensitive adhesives already transported cooled to the user at low temperature. At the latest at the user, the hot-melt adhesive moldings are cooled and brought to a low temperature, so that the pressure-sensitive adhesive is significantly reduced or no longer present. Depending on the property profile of the hotmelt PSA, temperatures below 10 ° C.
- the temperature above -200 0 C should, preferably about - 100 ° C, especially preferably above -35 0 C.
- the force can be measured by known test methods for release liners, for example according to Pritt K 7476 (Henkel KGaA). The force should be below 5 N / 20mm, in particular below 2 N / 20 mm.
- the cooling can be done by immersion in liquid materials, for example, cooled organic liquids, cooled aqueous solutions or liquid gases, eg. As liquid nitrogen. It can be provided solid coolant, for. As solid CO 2 , ice, or it is possible to store the hot melt adhesive blocks in refrigerators or cold rooms, at least in the short term. Also a flat contact with cooled, good heat conducting surfaces is possible.
- the cooling of the molding can be done continuously. However, it is sufficient and preferred according to the invention if only the surface of the moldings is cooled from all sides to a suitable temperature. The cooled layer on the surface can be up to 1 cm. But it is also sufficient if only the surface of the hot melt pressure sensitive adhesive up to 0.5 mm is cooled to such a temperature. This can also be achieved by only briefly applied coolant.
- the packaged hot-melt adhesive moldings can be unpacked. This should generally be done immediately after the cooling phase to prevent significant surface tack from being generated again by external heating.
- these claddings can be unfolded and removed at possible abutting edges or folds. Due to the tear-resistant design of the flexible packaging material can be easily deduct the packaging materials in large pieces of the hot melt adhesive. Adhesion on the surface of the hot-melt pressure-sensitive adhesive is reduced by the cold and possibly also by the surface coating. Possibly. it is possible, by cutting with knives, scissors and similar objects, to produce corresponding edges and cuts on the packaging in order to remove the flexible covering from there. Another embodiment of the invention uses pre-embossed tear edges or tearing lines on the flexible package, which are designed as predetermined break points to tear the package there and remove it from the packaged hot melt pressure sensitive adhesive.
- the corresponding container can have break lines or tear edges.
- cylindrical containers can be made from spirally wound flexible materials that open when unpacked along this tear edge and can be removed in one piece.
- the packages can be cooled with the hot-melt pressure-sensitive adhesive. In this case, before or after the openings for removing the hot melt pressure sensitive adhesive be exposed. After cooling, the containers are rotated so that the opening points downwards or diagonally downwards. Due to the reduced adhesion of the hot melt adhesive body, supported by its own weight and possibly by mechanical measures, the hot melt adhesive molded article can slide out of the container and be introduced directly into the melting device. Since the packaging material is inherently strong, there will be no contamination of the surface of the hot-melt pressure-sensitive adhesive, so that a further after-treatment is not necessary.
- the hot-melt adhesive moldings are placed in the melting aggregates present for melting.
- the temperature is to be selected so that during the storage time no sticking or no sticking of the hotmelt PSA can occur with each other or each other.
- the inventive method for packaging and unpacking permanently tacky hot-melt pressure sensitive adhesives at low temperature it is possible to store such adhesives in larger quantities and to unpack shortly before use. By reducing the tack, it is possible to remove the corresponding packaging materials over a large area. This also prevents, if necessary, that corresponding packaging residues, which are melted with, must be removed by filtration.
- Another advantage of the procedure according to the invention is that the removed packages generally have no residues of hotmelt adhesives and can be disposed of immediately or that they are reusable. Furthermore, a simplified procedure in the unpacking is possible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Packages (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Wrappers (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005049680A DE102005049680B3 (de) | 2005-10-14 | 2005-10-14 | Verfahren zum Entfernen der Verpackung von Schmelzhaftklebstoffen |
| PCT/EP2006/008107 WO2007042101A1 (de) | 2005-10-14 | 2006-08-17 | Verfahren zum entfernen der verpackung von schmelzhaftklebstoffen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1943149A1 true EP1943149A1 (de) | 2008-07-16 |
| EP1943149B1 EP1943149B1 (de) | 2009-03-11 |
Family
ID=37037473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06776912A Not-in-force EP1943149B1 (de) | 2005-10-14 | 2006-08-17 | Verfahren zum entfernen der verpackung von schmelzhaftklebstoffen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1943149B1 (de) |
| AT (1) | ATE425089T1 (de) |
| DE (2) | DE102005049680B3 (de) |
| WO (1) | WO2007042101A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008051223A1 (de) | 2008-10-14 | 2010-04-15 | Rehatec Dieter Frank Gmbh | Vorrichtung zum Sitzen |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3314536A (en) * | 1962-12-10 | 1967-04-18 | Swift & Co | Packaging adhesives in casings |
| US5204390A (en) * | 1989-09-08 | 1993-04-20 | H.B. Fuller Company | Hot melt adhesive resistant to ultraviolet light-induced degradation and to plasticizer migration |
| DE4009686C2 (de) * | 1990-03-26 | 1996-07-18 | Bayerische Motoren Werke Ag | Vorrichtung zum Entleeren eines mit pastösen Medien gefüllten Foliensackes |
| US5118762A (en) * | 1990-04-11 | 1992-06-02 | Shell Oil Company | Styrene-isoprene-styrene block copolymer composition for low viscosity low temperature hot melt adhesives |
| AU676477B2 (en) * | 1992-05-18 | 1997-03-13 | National Starch And Chemical Investment Holding Corporation | Method for packaging hot melt adhesives |
| US5333439A (en) * | 1992-09-22 | 1994-08-02 | Croda Apex Adhesives, Inc. | Hot-melt pressure sensitive adhesive packaging, preform, and method |
| DE19958428A1 (de) * | 1999-12-03 | 2001-06-07 | Pu Dosen Recycling Gmbh & Co B | Verfahren und Vorrichtung zum kontrollierten Entleeren mindestens einer Komponente des Inhalts aus Druckgaspackungen |
| DE10128061A1 (de) * | 2000-06-23 | 2002-01-24 | Henkel Kgaa | UV-beständiger Schmelzhaftklebstoff, Verfahren zu dessen Herstellung sowie daraus hergestellte, haftklebrige Gegenstände |
| DE10036804A1 (de) * | 2000-07-28 | 2002-02-07 | Tesa Ag | Haftklebemassen auf Basis von Blockcopolymeren der Struktur P(B)-P(A/C)-P(B) |
| DE10234369A1 (de) * | 2002-07-27 | 2004-02-12 | Henkel Kgaa | Strahlungsvernetzbare Schmelzhaftklebstoffe |
-
2005
- 2005-10-14 DE DE102005049680A patent/DE102005049680B3/de not_active Expired - Fee Related
-
2006
- 2006-08-17 WO PCT/EP2006/008107 patent/WO2007042101A1/de not_active Ceased
- 2006-08-17 EP EP06776912A patent/EP1943149B1/de not_active Not-in-force
- 2006-08-17 DE DE502006003129T patent/DE502006003129D1/de active Active
- 2006-08-17 AT AT06776912T patent/ATE425089T1/de active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007042101A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007042101A1 (de) | 2007-04-19 |
| ATE425089T1 (de) | 2009-03-15 |
| EP1943149B1 (de) | 2009-03-11 |
| DE102005049680B3 (de) | 2007-03-08 |
| DE502006003129D1 (de) | 2009-04-23 |
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