EP3088309A1 - Method for the manufacture of a packaged filter tow bale - Google Patents

Method for the manufacture of a packaged filter tow bale Download PDF

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Publication number
EP3088309A1
EP3088309A1 EP15165662.6A EP15165662A EP3088309A1 EP 3088309 A1 EP3088309 A1 EP 3088309A1 EP 15165662 A EP15165662 A EP 15165662A EP 3088309 A1 EP3088309 A1 EP 3088309A1
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EP
European Patent Office
Prior art keywords
filter tow
bale
film part
preferably
compressed
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.)
Withdrawn
Application number
EP15165662.6A
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German (de)
French (fr)
Inventor
Thomas Krumrey
Dietmar Kern
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.)
Solvay Acetow GmbH
Original Assignee
Solvay Acetow GmbH
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 Solvay Acetow GmbH filed Critical Solvay Acetow GmbH
Priority to EP15165662.6A priority Critical patent/EP3088309A1/en
Publication of EP3088309A1 publication Critical patent/EP3088309A1/en
Application status is Withdrawn legal-status Critical

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B27/00Bundling particular articles presenting special problems using string, wire, or narrow tape or band; Baling fibrous material, e.g. peat, not otherwise provided for
    • B65B27/12Baling or bundling compressible fibrous material, e.g. peat
    • B65B27/125Baling or bundling compressible fibrous material, e.g. peat and wrapping or bagging
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/58Applying two or more wrappers, e.g. in succession
    • B65B11/585Applying two or more wrappers, e.g. in succession to stacked articles, e.g. pallettised loads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10Applying or generating heat or pressure or combinations thereof

Abstract

The present invention relates to a method of producing a packaged bale of high density filter tow material. It is provided that initially in a baler compressed filter tow bales is provided in cuboid form. Subsequently, the compressed filter tow bale is packed with the compressed filter tow bales completely enclosing, airtight packaging wrapper. According to the invention, provision is made in particular for the packaging wrapper to be applied to the compressed filter tow bales in such a way that at least 80%, preferably at least 90% and more preferably at least 95% of the wrapper wrap is applied directly to the high-density filter tow material and this of therefore, touched or at least less than 15 mm from the high density filter tow material.

Description

  • The present invention relates to a method of producing a packaged bale of high density filter tow material.
  • The vast majority of cigarette filters used today are made from filter tow material, which consists of endless cellulose 2,5-acetate filaments. The individual filaments are combined after spinning into a band and then crimped in a stuffer box. Thereafter, the product is dried and then laid loosely in several meters high Füllkannen. In this case, the filter tow material is distributed uniformly as a layer over the cross-sectional area of the filling can by movements that change in the longitudinal and transverse directions of a laying unit. As many layers are deposited on each other until the filter tow pack has reached the desired mass and height in the filling can. Packing weights of several 100 kg are usual in this area. Subsequently, the inserted into the Füllkannen filter tow material is pressed into a filter tow bales and end packed for the purpose of transport to the filter or cigarette manufacturer.
  • Depending on the bale format, the bales provided for further processing to cigarette filters weigh between 350 and 650 kg, exceptionally high density bales with weights of up to 900 kg, so-called "high-density tow bales" are available, as described for example in the document US 4,577,752 A are described.
  • After transporting the end-packed filter tow bales to the filter or cigarette manufacturer, the filter tow material is removed from the bale and placed on a filter rod machine, as described for example in the publication US 5,460,590 A is described, processed into filter rods.
  • When processing filter tow material into filter rods in a filter rod machine, the filter tow material is thickened as much as possible in a processing part. To bulge the filter tow material this is usually exploded by means of compressed air operated spreader nozzles and stretched by a system of drafting rollers, in particular with threaded or screw surfaces. After that the spreading becomes Filter tow material fed to a triacetin spray box, in which the acetate surface of the filter tow material is dissolved and tackified. In the format part of the filter rod machine, the filter tow band is gathered and compressed to the cross section of the future filter rod. The filaments stick together and form a three-dimensional spatial network structure with the filter hardness desired for further processing and for the consumers.
  • The essential quality feature for the filter or cigarette manufacturer is the homogeneity with regard to the draw resistance, since this influences the taste sensation of the smoker and the filter performance. The still acceptable Zugwiderstandsstreuungen are dependent on the absolute value of the draw resistance.
  • The homogeneity of the filter rods with respect to the draw resistance is determined not only by the quality of the filter tow material and the processing method in the filter rod machine, but in particular by the type of packaging of the filter tow material. In this case, the type of packaging of the filter tow material is generally decisive for an undisturbed flow of the filter tow material from the filter tow bale to the filter rod machine.
  • Particularly in the case of filter tow bales with large packing densities and filter tow bales, the material of which was exposed to excessively high pressure forces (for example during pressing or locally due to changes), often work-related work problems occur at the filter rod machine. In particular, voltage changes when removing the filter tow material from the filter tow bale often lead to uneven pre-strains of the filter tow material when entering the filter rod machine and thus to material or Zugwiderstandsschwankungen.
  • To ensure that the filter rods made of the filter tow material are always of equal quality, certain conditions must therefore be taken into account, in particular in the packaging of the filter tow material, in order to subsequently remove the filter tow material from To prevent the filter tow bale on the filter rod machine excessive occurrence of material or Zugwiderstandsschwankungen.
  • On the one hand, a maximum pressing force must not be exceeded during pressing of the filter tow material deposited in the filling can, since this would, as a rule, inevitably adversely affect the quality of the filter tow material to the extent that the results from the filter tow Material manufactured Filter rods for the filter or cigarette manufacturer would no longer have acceptable Zugwiderstandsschwankungen.
  • In addition, should - if possible - apart from the end-packed filter tow bales of changes, as such changes in the packaged filter tow material inevitably lead to constrictions and local defects, which in turn for the filter or cigarette manufacturer no longer acceptable draw resistance variations in the filter rods made from the filter tow material.
  • The influence of the method used to package filter tow material at the filter tow manufacturer on the quality of the filter rods made from the packaged filter tow material in the filter rod machine at the filter or cigarette manufacturer has been known in the prior art and currently used packaging methods are not or at least not sufficiently considered.
  • A method for optimal filling a filling can is in the document WO 02/32238 A2 described. This prior art, however, relates in the first place only actually filling the Füllkanne with filter tow material, and then to avoid such processing problems with the filter or cigarette manufacturer, or at least reduce that of a not optimally placed in the Füllkanne filter tow Material result.
  • The influence of the subsequent packaging process on the quality of the filter tow material is not sufficiently considered in this prior art. In this case, the packaging process includes on the one hand compression of the filter tow material deposited in the filling can and, on the other hand, subsequent packaging of the compressed filter tow material into an end-packed filter tow bale.
  • Usually, after the filter tow material has been deposited in a filling can, the filter tow material is pressed in a baling press in the direction of the superposed layers of the filter tow material previously deposited in the filling can. During the pressing process, a baler 10, 10 'of the baler acts in the direction of the superposed layers of the filter tow material, so that the initial height of the filter tow material laid down in layers in the filling can is reduced.
  • During pressing, the filter tow material does not exhibit complete elastic (reversible) behavior since the filter tow material stored in layers in the filling can does not regain its original height when over the press die 10, 10 'of the baler vertical pressing force applied to the filter tow material layers is removed again. Rather, the height at which the filter tow material grows again when the pressing force exerted on the press ram 10, 10 'of the baling press is suspended depends in particular on how long and at which pressing pressure the pressing was carried out beforehand.
  • For packing the filter tow material compressed in the filling can, it is customary to coat the still under compressive stress filter tow pack, in particular within the pressing device, with a packaging material (packaging material). After wrapping the compressed filter tow bale provided in the baler, usually the baler is opened, thus removing the compressive stress exerted on the filter tow pack.
  • Since the filter tow material after the previous compression only a relatively small elastic, i. has relaxing, Rückformungsanteil whose height depends in particular on the pressing time and / or pressing force, the filter tow pack tends to expand after release from the baler and that perpendicular to the filter tow material layers and opposite of the baler originally exerted pressing force.
  • This elastic (relaxing) recovery proportion of the filter tow material is the lower, the longer the pressing time and the higher the pressing force during pressing of the filter tow bale in the filling can. Only the relaxing restorative component, after being released from the baler, represents the elastic restoring force which must be absorbed by the packaging material of the filter tow pack so that the bale holds together.
  • Conventional packaging materials are cardboard, which are mechanically held together by transfiguration or gluing, or plastic fabric, which are closed, for example by a Velcro.
  • An example of an adhesive package is in the document DE 76 35 849 U1 described. Information about a filter tow packaging with plastic fabrics can be found in the company brochure "Some Useful Information about the reusable packaging for Rhodia Filter Tow ": RHODIA Acetow GmbH, Engesserstrasse 8, D-79108 Freiburg.
  • These two last-mentioned types of packaging have advantages in so far as they manage without additional modifications, so that the risk of constrictions and resulting tensile resistance scattering in the filter tow material ultimately produced filter rods is minimized.
  • The two last-mentioned types of packaging, however, have the disadvantage that the relaxing recovery component existing after the release of the compressed bale, i. the elastic restoring force of the filter tow material, is absorbed by the packaging material. This inevitably leads to undesirable bulges on the top and bottom of the bale. Although these bulges do not interfere with the intended use of the filter tow material in the filter rod machine for the production of filter rods, but prevent safe stacking of the filter tow bales thus produced.
  • This problem is solved according to the prior art either by lateral stacking of the bales or the use of special pallets, as described in the aforementioned company brochure of RHODIA Acetow GmbH.
  • On the other hand, from the document WO 2003/089309 A2 known to provide the compressed in a baling filter-tow material in the compressed state with the filter tow bales completely enclosing, airtight packaging wrapper. Upon release of such an airtight enclosed bale from the baler, the relaxing recovery portion of the filter tow material causes a vacuum to be generated simultaneously with the increase in height of the high density bale in the bale interior over at least a portion of the elastic return force of the filter -Tow-material is equalized. In this way, the unwanted bulges on the top and bottom of the bale can be at least reduced because the packaging material only has to absorb a smaller proportion of the elastic restoring force of the filter tow material.
  • The problem with the latter type of packaging, in which the compressed in the baler filter tow material is sealed airtight with a packaging material, so that after release of the Filter tow bales from the baler the relaxing rebounding portion of the filter tow material is at least partially equalized by the then built up in the bale inside negative pressure, it can be seen that there is a high risk that the bale after release from the baler bursts, especially if the height of the filter tow bale can only grow small and thus the negative pressure generated in the bale inside is too low to effectively equalize the elastic restoring force of the filter tow material sufficiently.
  • On the part of the filter tow manufacturers, there is an increasing tendency to apply in the packaging of filter tow material in so far "optimal" method, as far as the requirements of the filter or cigarette manufacturers on the quality of the handled by the filter tow bale Filter Tow material is met, and on the other hand by the filter tow manufacturer effectively the risk of a "bale place" is minimized.
  • To look at the from the publication WO 2003/089309 A2 known type of packaging occurring during the production of packaged bales of highly compressed filter tow material failure rate, ie to reduce the risk of a bale place after release from the baler, fundamentally different measures are possible.
  • On the one hand, the relaxing recovery component occurring after release of the bale from the baler, ie the elastic restoring force of the filter tow material, can be reduced by correspondingly reducing the filling quantity of the bale. However, this measure has the disadvantage that in the further processing of the filter tow material, in particular in a filter rod machine due to the reduced bale capacity relatively quickly the filter tow material of a bale is consumed and the filter rod machine with a new filter tow bales must be fitted. This leads to relatively frequent interruptions in the filter rod production, which is not accepted by the filter rod manufacturer.
  • Another measure for reducing the relaxant recovery rate of the filter tow material after release from the baler would be to increase the pressing force exerted in the baler during compression of the filter tow material. However, this leads to quality defects in the compressed filter tow material and thus to quality defects in the filter tow material produced Cigarette filters. In addition, an increased pressing force would have a negative effect on the ball outlet on the filter rod machine.
  • Another measure for reducing the relaxed rebound rate of the filter tow material after release from the baler could be to correspondingly extend the pressing time to compensate for the irreversible (ie, non-elastic) rebound rate in the filter tow material at the expense of the relaxing rebound rate to increase. However, an extension of the pressing time inevitably reduces the press throughput, which is undesirable and unacceptable on the part of the filter tow manufacturer.
  • Based on this problem, the present invention has the object to provide a method for producing a packed bale of high-density filter tow material, in which the failure rate of the manufactured, packaged bales is reduced and in particular less than 1%, where at the same time previously described and occurring in the prior art disadvantages are avoided.
  • In particular, the method should also be suitable for producing a filter tow bale in which the filling amount of the bale is not undershot by the filter rod manufacturers still accepted minimum, while the risk of introducing quality defects in the filter tow material at the same time Pressing minimized and the bale drain on the filter rod machine is not deteriorated.
  • In addition to this, in the process, in particular, the filter throughput which has hitherto been customary in the case of the filter tow material should also be feasible.
  • This object is achieved in particular by the subject matter of independent claim 1, wherein advantageous developments of the manufacturing method mentioned in claim 1 are mentioned in the dependent claims.
  • Thus, according to the teaching of the present invention for producing a packed bale of highly compressed filter tow material, first a filter tow bale compressed in a baler is provided in cuboidal shape, with the compressed filter tow bale then being filled with a compressed filter tow. Bales completely enclosing, airtight packaging wrapper is packed. In the packaging step, the packaging wrapper is applied to the compressed filter tow bales such that at least 80%, preferably at least 90% and more preferably at least 95% of the packaging wrap directly abuts the high density filter tow material and thus contacts or at least less than 15 mm from the high density filter tow material.
  • With this comparatively simple measure is achieved in a surprising manner that after the release of the so packaged compressed filter tow bale from the baler, the risk of bursting of the bale is significantly reduced, in comparison to bales, for example, after in the pamphlet WO 2003/089309 A2 generally described packaging. Specifically, in the bales produced by the method according to the invention, a failure rate significantly below 1% is realized.
  • Investigations have shown in this context that in particular the actual packaging process of the compressed filter tow bale is primarily crucial for the occurrence of a bale place after release of the packaged bale from the baler. This is largely independent of the capacity of the bale, the pressing force exerted during pressing and the pressing time. Therefore, the inventive method can be easily implemented in a packaging process, as described for example in the document WO 2003/089309 A2 generally described.
  • In particular, thus, the risk of a bale place after release of the packaged filter tow bale from the baler can be significantly reduced, despite the constant filling capacity of the bale. The commonly used pressing process (pressing force and pressing time) does not have to be changed, so that for carrying out the method according to the invention can be used in the usual way in the production of high-density bales of filter tow material balers and press processes used.
  • Not only does the method of the present invention reduce the failure rate but also the risk of quality defects occurring in the filter tow material during the pressing operation, while at the same time not adversely affecting a desired bale drain on the filter rod machine desired by the cigarette or filter manufacturers.
  • Another significant advantage, which is achieved with the manufacturing method according to the invention is to be seen in the fact that the increase in the height of the filter tow bale after release from the baler according to a predetermined event sequence takes place, wherein in particular the extent of the height change is limited upwards.
  • In this way, the maximum final height of the finished packaged filter tow bale after release from the baler to a pre-definable maximum value in advance adjustable.
  • Since due to the use of a filter tow bales completely enclosing, airtight packaging wrapper disturbing bulges on the top and bottom of the finished and released from the baler filter tow bales are prevented, the bales produced by the novel process also stack easily. Bales can thus be produced together with the maximum height of the finished bale which has been pre-determined by the method according to the invention and released from the baler. The bales can be stacked under optimal space utilization in double layers in standard containers.
  • In the known from the prior art and for example in the document WO 2003/089309 A2 Such a stackability in double layers was not possible with full utilization of the height of a standard container or the height of the door opening of a standard container.
  • By the term "high-density filter tow material" as used herein is meant in particular filter tow material with a packing density of at least 300 kg / m3 and at most 800 kg / m3.
  • As a baler for providing the compressed filter tow bale, the balers commonly used in the filter tow production are suitable. These are balers with a pressing force of at least 100 t / m2, whereby a maximum pressing force of 600 t / m2 should not be exceeded. Preferably, the compressed in the baler filter tow bales is provided by pressing it with a pressing force of at least 100 t / m2 and a pressing time of at least 4 to 20 min., Preferably 5 to 15 min. Pressed.
  • To ensure that, in the packaging step of the manufacturing process of the invention, the packaging wrapper is applied to the compressed filter tow bale which bears at least 80% of the wrapper wrap directly on the filter tow material or at least less than 15 mm from the filter tow wrap. Material is spaced, different solutions come into question. In particular, a measuring arrangement with at least one non-contact sensor unit is suitable for this purpose, wherein this sensor unit preferably has at least one distance sensor and preferably has at least one 2D distance sensor array. With the at least one distance sensor or the at least one 2D distance sensor array, a distance between the highly compressed filter tow material on the one hand and the packaging material of the packaging wrapper on the other hand can be detected exactly.
  • For example, it is conceivable in this connection that the distance between the non-contact, at least one distance sensor or non-contact, at least one 2D distance sensor array and the filter tow material on the one hand and the distance between the non-contact, at least a distance sensor or non-contact, at least one 2D Abstandssensorarray and the packaging casing on the other hand is detected, in which case taking into account the thickness of the packaging wrapper, the actual distance between the packaging wrapper and the filter tow material can be determined.
  • In this context, it is particularly conceivable that the non-contact distance sensor or the non-contact 2D distance sensor array has at least one light, infrared, radio wave, microwave, Terraherzstrahlen- or ultrasonic sensor.
  • Preferably, a distance measurement between the filter tow material and the packaging wrapper by means of a transit time and phase position measurement with radio waves, light, infrared or ultrasound feasible. Furthermore, it can be provided that the distance measurement by means of triangulation is feasible.
  • Alternatively or additionally, it is conceivable to carry out a planar distance measurement. For example, prior to packaging the compressed filter tow bale with a 2D distance measurement method, the distance between the sensor device and the filter tow material may be determined, again following the application of the packaging wrapper, a 2D distance measurement, but with reference herein on the distance between the sensor device and the packaging wrapper. By comparing the two recorded 2D distance measurements can be easily be determined on the actual distance between the applied packaging wrapper and the filter tow material.
  • In particular, in the present invention, it has been recognized that in order to reduce the risk of bale burst after releasing the packaged filter tow bale from the baler, it is important that the amount of air trapped between the packaging wrapper and the highly compressed filter tow material does not exceed a maximum value. This is based on the finding that the amount of air trapped between the packaging casing and the highly compressed filter tow material during the packaging process during the release of the airtight filter tow bale from the baling press is decisively decisive for an additional increase in the bale height.
  • However, the amount of height increase in releasing the bale from the baler must not exceed a maximum value to effectively prevent the packaging material from absorbing excessive forces resulting from the expansion of the filter tow material. Not only would this negatively affect the flatness of the top and bottom of the finished bale, but it would also result in the packaging material having to be designed to absorb these forces.
  • Moreover, if much of the expansion forces associated with the expansion of the filter tow material from the baler release are absorbed by the packaging material, there is an increased risk of bale bursting, especially if the packaging wrapper is accidentally damaged during handling of the finished bale.
  • Investigations have shown that the failure rate in the manufacture of filter tow bales can be effectively reduced below 1%, if in packaging the compressed filter tow bale with the airtight packaging wrapper completely enclosing the compressed filter tow bales is applied to the compressed filter tow bales that at a temperature of 20 ° C a maximum of 50 liters, preferably a maximum of 30 liters, and more preferably a maximum of 10 liters of air between the packaging casing and the high-density filter tow material is included. The last mentioned volume of air trapped between the packaging wrapper and the high density filter tow material is the failure rate even reduced to well below 0.2% in the production of filter tow bales.
  • The amount of air trapped in the packaging of the compressed filter tow bale between the packaging wrapper and the high density filter tow material may preferably be determined indirectly by a distance measurement between the packaging wrapper and the high density filter tow material. For the distance measurement in particular the optical measuring methods described above come into question.
  • In a preferred realization of the method according to the invention, the filter tow bale compressed in the baler is provided in such a way that it has a cuboid shape with a preferably rectangular shape adapted to the dimensions of a transport pallet, in particular Europool pallet
  • Base area of at least 6,500 cm 2 and preferably at least 8,500 cm 2 , and a height of at least 75 cm, and preferably of at least 85 cm. In this case, the filter tow bales should be provided such that the compressed in the baler filter tow bales has a bale density of at least 300 kg / m3.
  • Subsequently, when in the packaging step, the packaging wrapper is applied to the compressed filter tow bales such that in the volume enclosed by the packaging wrapper at a temperature of 20 ° C a maximum of 650 liters of air, preferably a total of at most 450 liters of air and more preferably a maximum total 400 liters of air, several synergistic effects can be achieved:
    • On the one hand, it is ensured that the occurrence of bale burst after the release of the bales thus produced from the baler is almost impossible (failure rate well below 0.5%).
  • On the other disturbing bulges on the top and bottom of the released from the baler bale are effectively prevented, so that the stackability of the bale is guaranteed.
  • In particular, however, in this embodiment of the method according to the invention highly compressed filter tow bales can be produced, in which the usual applied in the packaging of filter tow material pressing forces and pressing times can even be reduced.
  • As far as the material of the packaging casing is concerned, a plastic film is particularly suitable for this purpose. The film preferably consists of polyethylene, in particular LDPE, or of modified polyethylene (LLDPE) or of a composite film with a polyamide and a polyethylene layer.
  • For advertising and / or aesthetic purposes can be used as a packaging film in particular a colored or printed film. This is particularly useful if the filter tow material to be packaged is light-sensitive.
  • The packaging film preferably has a thickness of 100 to 400 .mu.m so that it can simultaneously serve as a transport packaging. As already stated, it is not necessary in the case of a bale produced by the method according to the invention to add an additional transport packaging made of cardboard, plastic fabric etc. around the packaging film of the bale.
  • However, an additional or alternative change of the finished bale is not required because the risk of bursting of the bale due to the proposed in the present invention, special packaging step can hardly occur.
  • The provision of the compressed filter tow bale in cuboid shape is generally carried out by means of a baler known from the prior art. On the one hand, the method according to the invention can be carried out so that the quantity of filter tow material intended for packaging is first mechanically compressed in the baler and then wrapped with the packaging casing, wherein the airtight sealing of the packaging casing preferably takes place within the baler, so that the entire manufacturing process can be carried out in one place.
  • Of course, it is also possible to perform the compression of the filter tow material preparatory in a separate station. In this case, the compressed filter tow bale is fed in an "auxiliary packaging", which may for example consist of retaining clips, a packaging station, where the auxiliary packaging is removed and the envelope of the compressed filter tow bale is made with the airtight packaging film. This embodiment would have the advantage that not all of the process is carried out in the baler, so that the baler has a higher availability. In addition, the pressing cycle of shorter duration and there are several degrees of freedom in the application of Packaging cover, as the compressed bale in the packing station is accessible from all sides.
  • According to a further aspect of the packaging method according to the invention, provision is made in particular for the compressed filter tow bale to be packed with the packaging casing in such a way that the volume enclosed by the packaging casing is released after the packed filter tow bale has been released the baler can increase by at least 32 liters and preferably by at least 70 liters, without the material of the packaging wrapper being stretched or stretched.
  • In this way, when packaging the compressed filter tow material, a "growth reserve" is intentionally provided in the packaging material surrounding the compressed bale. This growth reserve can for example be introduced into the packaging material, that consciously the packaging material partially has a wrinkle area, which unfolds when releasing the packaged bale and thus in a predictable manner an increase in the bale height up to a pre-determined over the fold area end height of the Bale allows.
  • The guaranteed over the fold area growth reserve is preferably chosen so that in the expansion of the filter tow material after release from the baler an increase in volume of the volume enclosed by the airtight packaging envelope volume is guaranteed until the thereby adjusting inside the bale negative pressure compared to the outside atmosphere large is enough to equalize the restoring forces of the filter tow material as completely as possible, so that while the material of the packaging wrapper is neither stretched or stretched and only negligible or no forces must be absorbed by the packaging material.
  • In a particularly preferred realization of the method according to the invention, it is provided that, before the compressed filter tow bale is packed with the airtight packaging casing, the filter tow bale compressed in the baler is provided in a cuboid between a cover film part and a bottom film part , wherein in the subsequent packaging step, the compressed filter tow bales completely enclosing, airtight packaging wrapper is formed by welding or gluing the two film parts.
  • In this context, it is particularly conceivable that in the packaging step, a sleeve-film part is applied to the side surfaces of the compressed filter tow bale. Subsequently, the opposite end portions of the sleeve film part are merged frontally and connected to each other. In addition, the lateral surface of the sleeve foil part is connected to the bottom foil part and the lid foil part such that a total of the compressed filter tow bales completely enclosing, airtight packaging wrapper is formed.
  • In this case, it is particularly preferred if the sleeve film part is applied in such a way that the side surfaces of the compressed filter tow bale that at least 80%, preferably at least 90% and more preferably at least 95% of the lateral surface of the sleeve film part on the high-density filter Tow material abuts directly and this is so touched or spaced at least less than 15 mm from the high-density filter tow material.
  • The term "shell surface of the sleeve film part" as used herein means the ceiling surface of the sleeve film part, which in the finished state of the filter tow bale released from the baler points towards and touches the filter tow material. Herein, the term "touched" means that at least 80%, preferably at least 90%, and more preferably at least 95% of the packaging wrapper is directly adjacent to the high density filter tow material and touches it, or at least less than 15mm is spaced from the high density filter tow material.
  • In this embodiment of the method according to the invention, it is particularly advantageous if the sleeve film part is designed as a flat film.
  • Basically, a maximum gas permeability of 10,000 cc / (m 2 × dx bar), and at most about 200 cc / (m 2 × dx bar) and more preferably at most about 20 cc / (m 2 × dx bar) should be measured, measured according to DIN 2000-07 (Date of filing) at 23 ° C and 75% relative humidity for air.
  • The tearing force of the material of the packaging wrapper should be at least 10 N / 15 mm, in particular at least about 100 N / 15 mm, and preferably at least about 200 N / 15 mm, measured in each case DIN EN ISO527-1 "General principles for determining the tensile properties of plastics "or measured by DIN EN ISO527-3 "Test conditions for foils and sheets "(respective status: filing date).
  • It should be noted that these requirements with respect to the breaking strength of the material of the packaging wrapper are only necessary because when packing the compressed filter tow bale with the airtight packaging wrapper completely enclosing the compressed filter tow bale, the material serving as packaging wrapper preferably is applied with bias to achieve that the packaging wrapper can be applied to the compressed filter tow bales such that at least 80%, preferably at least 90% and more preferably at least 95% of the wrapper wrap is directly attached to the high density filter tow. Material abuts and therefore touched or at least less than 15 mm from the high density filter tow material is spaced.
  • The extensibility of the material used as a packaging wrapper should be a maximum of 1000 mm / 15 mm measured according to DIN EN ISO 527 (see above). The yield stress at 10% elongation in the longitudinal direction according to DIN EN ISO 527 (see above) should not exceed 38 to 47 N / 15 mm.
  • Since the packaging casing preferably also represents the transport packaging of the filter tow bale, it is particularly advantageous in this context if the specific piercing force of the material of the packaging casing is based on the 0.8 mm mandrel DIN EN 14477 (Edition 2004-06 ) is at least 8N.
  • With the above-mentioned maximum gas permeability of the material serving as a packaging casing, if necessary in combination with the said minimum piercing force, it is ensured that in practice a use in the bale interior after the release from the baling presses (due to the self-expansion of the filter tow material) Vacuum over the outside atmosphere can be maintained sufficiently long. "Sufficiently long" in this context means at least 24 hours and preferably until the packaged bale is deliberately opened on a filter rod machine for further processing of the packaged bale material.
  • However, it has been found that it is also harmless if the packaging casing of the bale, for example, during transport for further processing of the filter tow material on a filter rod machine is inadvertently perforated in particular. It is advantageous, however, to mention that the airtightness of the packaging wrapper is ensured as far as possible at the time of the intended opening of the bale on a filter rod machine.
  • When using a sleeve film part, which has these conditions, in particular with regard to the breaking strength and elasticity, it is advantageous if, after the application of the sleeve film part to the side surfaces of the compressed filter tow bale, the sleeve film part is biased.
  • This is preferably done with an average biasing force of at least 50 N and preferably at least 75 N. In this way it can be achieved in an easy to implement but nevertheless effective manner that in the packaging step between the packaging casing (in particular sleeve film part) and the compressed Filter Tow material does not directly abut the filter tow material at most 20% of the sleeve film part.
  • In the following, by way of example with reference to the accompanying drawings, various possibilities for realizing the method according to the invention will be described.
  • Show it:
    • FIG. 1a schematically the filter tow material to be packaged in the baler or filling can before pressing in an exemplary embodiment of the method according to the invention for producing a packed bale of highly compressed filter tow material;
    • FIG. 1b schematically the filter tow material to be packaged after pressing in the baler or filling can, in the exemplary embodiment of the method according to the invention FIG. 1a ;
    • FIG. 1c schematically applying a sleeve-film part to the side surfaces of the compressed filter tow bale according to FIG. 1b ; and
    • IG. FIG. 1 d schematically shows the bonding of the lateral surface of the sleeve film part to the bottom film part and the cover film part in the packaging method shown by way of example in the drawings. FIG.
  • In the exemplary embodiment of the method according to the invention, filter tow material 1 is introduced in a baling press, as described in US Pat FIG. 1a is indicated schematically. In the baling press, which has, for example, a pressing force of 300 to 400 t, the filter tow material 1 is compressed to the desired pack size (cf. FIG. 1b ).
  • The pressing is preferably carried out such that the compressed in the baler filter tow bales has a packing density of at least 250 kg / m2 and preferably a packing density of at least 300 kg / m2.
  • The pack size, i. the height of the compressed in the baler filter tow bale is preferably at least 700 mm. As already stated at the outset, by providing the compressed filter tow bale in the baling press, the filter tow material 1 is compressed in such a way that the elastic return behavior of the filter tow material is reduced.
  • At the in FIG. 1a and FIG. 1b schematically illustrated embodiment, the press die 10, 10 'of the baler is prepared according to before filling the filter tow material into the baler or before filling the filter tow material in the filling can of the baler. Specifically, it is provided in the embodiment shown schematically in the drawings that the pressing of the filter tow material in the baler between a lid film part 11 and a bottom film part 12 takes place.
  • For this purpose, it is provided in the embodiment shown schematically in the drawings that prior to pressing the filter tow material and before filling the filter tow material into the filling can, the bottom of the filling can is garnished with a bottom film part 12. Subsequently, the filter tow material 1 to be pressed is placed in the so-prepared filling can.
  • Before the contents of the full Füllkanne including Füllkannenboden is pushed on the baler in the press chamber, and the upper ram 10 of the baler with a film part (lid film part 11) is garnished.
  • By providing the cover and bottom film part 11, 12, the subsequent bottom and cover film are placed at the correct positions (above or below the bale) even before the filter tow material is pressed.
  • Thus prepared, the filter tow material 1 is pressed in the baler to form a compressed filter tow bale (cf. FIG. 1b ). The actual pressing operation corresponds to the usual pressing processes known from the prior art and is not part of the invention disclosed herein.
  • In principle, it is advantageous if the pressing of the filter tow material in the baling press is carried out according to a predetermined program sequence, so that in the compressed filter tow bale after a predefined or definable event sequence the relaxing rebounding component is reduced. In this case, it is advantageous if the pressing process lasts for at least 4 minutes, and preferably for at least 5 minutes, in order to achieve that the relaxing recovery rate in the filter tow material is sufficiently reduced.
  • In detail, and how in FIG. 1b shown schematically, thus a compressed filter tow bales is provided in cuboid form in the baler between the lid film part 11 and the bottom film part 12. In the subsequent step, the compressed filter tow bale is packed with an airtight packaging wrapper completely surrounding the compressed filter tow bale.
  • According to the schematic representation in FIG. 1c For example, in the exemplary embodiment of the method according to the invention, a sleeve film part 13 is applied to the side surfaces of the compressed filter tow bale, the sleeve film part 13 having a jacket surface with two opposite end regions. Subsequently, the opposite end portions of the sleeve film part 13 are merged frontally and connected to each other.
  • Furthermore - as in FIG. 1d shown schematically - the lateral surface of the sleeve-film part 13 with the bottom-film part 12 and the lid-film part 11 is connected. The joining of the end regions of the sleeve film part 13 with each other and the joining of the lateral surface of the sleeve film part 13 with the bottom film part 12 and the lid film part 11 takes place in such a way that a total of the airtight packaging envelope enclosing the compressed filter tow bales is formed.
  • In the method according to the invention, as schematically illustrated in the drawings, the sleeve film part 13 is applied to the side surface of the compressed filter tow bale so that at least 80%, preferably at least 90%, and more preferably at least 95% of the The lateral surface of the sleeve film part 13 directly abuts against the highly compressed filter tow material and therefore touches it, or at least is spaced less than 15 mm from the highly compressed filter tow material.
  • Thus, it is particularly advantageous with regard to reducing the risk of a bale punch if a compressed filter tow bale is provided in the baling press, which has a cuboid shape with a preferably rectangular base area of at least matched to the dimensions of a transport pallet, in particular Europool pallet 6,500 cm 2 and preferably at least 8,000 cm 2, and has a height of at least 75 cm (pack size), and preferably of at least 85 cm. The compressed filter tow bale having these dimensions provided in the baler has a bale density of at least 300 kg / m 3 in the exemplary embodiment.
  • By the term "dimensions of a transport pallet" as used herein is meant in particular the dimension of a commonly used transport pallet. This is in particular a transport pallet adapted to the common container dimensions, such as a Europool pallet.
  • Europool pallets are based on a basic module of 400 mm x 600 mm. Pallets of this size are also called "1/4 Europool pallets" and correspond to the size of a so-called VDA box. The wooden Europool pallets EUR, which have been used for many years, measure 800 x 1200 x 144 mm. Half of the 800mm x 600mm Europool pallets are also called display pallets. They are called "EUR 6 pallets" by EPAL; another name is Düsseldorfer Palette.
  • Also widely used are the somewhat larger so-called industrial pallets (1000 x 1200 x 144 mm), which are standardized by EPAL as "EUR 3 pallets" or in reinforced versions as "EUR 2 pallets".
    Non-standard large pallets often have twice the industrial dimension, ie 2000 x 1200 mm or 2000 x 1250 mm.
  • The pallets used on the American continent, and sometimes also in China, measure 48 x 40 inches, ie at 1,219.2 mm x 1,016 mm they roughly correspond to the industrial pallets (1,200 mm x 1,000 mm), while in Asia they are generally 1,100 mm x 1,100 mm resp 1.140 mm x 1.140 mm pallets are used.
  • The sleeve film part 13 is applied in this embodiment to the side surface of the compressed filter tow bale such that in the volume enclosed by the sleeve film part 13, the lid film part 11 and the bottom film part 12 at a temperature of 20 ° C a total of 650 liters of air, preferably a total of at most 450 liters of air and more preferably a total of at most 400 liters of air are included.
  • As already stated in the general part of the description, in this way it is effectively achieved that the risk of a bale burst after the release of the airtight enclosed bale from the baler is reduced to significantly less than 1%.
  • In the embodiment schematically illustrated in the drawings, in which prior to pressing the filter tow material, the baler is garnished with a bottom film part 12 and a lid film part 11, and then a sleeve film part 13 around the side surface of the compressed Bale is applied, it is advantageous if the sleeve film part is applied to the side surface of the compressed filter tow bale such that at a temperature of 20 ° C maximum 50 liters of air, preferably at most 30 liters and more preferably at most 10 liters of air is trapped between the shell surface of the sleeve film part and the high-performance filter tow material.
  • This can be achieved, for example, by applying the sleeve film part 13 with an average application tension of at least 50 N and preferably at least 75 N around the side surfaces of the compressed filter tow bale. This application voltage can be easily monitored or monitored via strain gauges or similar sensors.
  • For forming an airtight packaging wrapper is provided in the embodiment shown schematically in the drawings, that in a front-side merging of the opposite end portions of the sleeve-foil part 13 formed vertical overlap region a vertically extending weld, in particular fin seam, is formed.
  • Subsequently, the sleeve film part is biased in the direction of the vertically extending weld and fixed, in particular temporarily fixed, with the aid of clamps or the like fixing. It is then provided in one exemplary embodiment that a horizontally encircling overlap region is formed between the upper end region of the sleeve film part 13 and a circumferential edge region of the cover film part 11. In the same way, a horizontally encircling overlapping area is formed between the lower end portion of the sleeve sheet member 13 and a peripheral edge portion of the bottom sheet member 12. Following this, in each case a peripheral weld, in particular fin seam is formed in the horizontal circumferential overlap region.
  • The vertically extending weld and the circumferential welds in the horizontal circumferential overlap areas are carried out such that with the bottom film part 12, with the lid film part 11 and the sleeve film part 13 a total of the compressed filter tow bales completely enclosing , airtight packaging wrapper is formed.
  • To form the horizontal peripheral overlap region, it is advantageous in this context if the respective edge regions of the lid film part 11 and the bottom film part 12 are pulled outwards from the bale.
  • According to an exemplary embodiment, when the sleeve film part 13 abuts against the side surface of the filter tow bale, it is provided that this takes place in such a way that the vertical overlapping region is preferably arranged centrally between two vertically extending corner edges of the filter tow bale. For pretensioning the sleeve film part 13 in the direction of the vertical weld seam, it is then preferably possible to manually slide film material of the cuffed film part 13 in the direction of the vertical weld seam in such a way that the overlapping area is increased in the horizontal direction. In this case, it is advantageous if the sleeve film part 13 is prestressed with an average prestressing force of at least 50 N and preferably of at least 75 N. This preload force can be monitored in a simple manner, for example by attaching according to the strain gauges.
  • In the method according to the invention, it is advantageous when forming the peripheral weld seam in the horizontally circumferential overlapping regions if the circumferential weld seam is formed with a predetermined or definable minimum distance from the bale in the horizontally encircling overlap region. This predetermined or definable minimum distance is in a range between 2 to 20 cm, and preferably in a range between 5 to 10 cm. This distance between the bale and the weld ultimately represents the degree to which the finished packaged bale can grow without stress on the packaging when the bale is released from the baler.
  • Generally speaking, therefore, the predetermined or definable minimum distance between the circumferential weld and the bale should be selected depending on the elastic recovery behavior of the compressed filter tow material after release of the filter tow material from the baler.
  • After airtight packaging of the compressed filter tow bale, the filter tow bale is released from the baler. This is preferably done by progressively increasing the distance between the upper and lower press plates of the baler to allow for gradual expansion of the filter tow material. In this way, voltage spikes are prevented.
  • In this connection, it is advantageous if, in a first step, the distance between the upper and lower press plates is increased by 10 to 35 mm, preferably by 15 to 30 mm, and more preferably by 20 to 25 mm. In a second step delayed from the first step, the distance between the upper and lower press plates is then increased to at least 1,200 mm.
  • Briefly summarized, the packaging method shown schematically in the drawings can be characterized as follows:
    • Process step i): Providing a compacted in a baler filter tow bale in cuboid shape
    • Process step ii): Packing the compressed filter tow bale with an airtight packaging wrapper completely enclosing the compressed filter tow bale
    • Step iii): Release the filter tow bale from the baler, which is completely enclosed with the airtight packaging wrapper
  • According to the invention, it is provided that in process step ii) the packaging wrapper is applied to the compressed filter tow bales such that at least 80%, preferably at least 90% and more preferably at least 95% of the wrapper wrap directly on the high density filter tow material is applied and therefore touched or at least less than 15 mm away from the high density filter tow material. In particular, it is advantageous in this context if, in method step ii), the packaging wrapper is placed around the compressed filter tow bale such that at a temperature of 20 ° C. a maximum of 50 liters, preferably a maximum of 30 liters, and more preferably a maximum of 10 Liters of air between the shell surface of the sleeve film part 13 and the high density filter tow material.
  • In preferred embodiments of the packaging method according to the invention, in method step i) the filter tow bale compressed in the baler has a cuboid shape with a preferably rectangular base area of at least 6,500 cm 2 and preferably at least 8,500 cm 2 , and a height of at least 75 cm and preferably of at least 85 cm, the filter tow bale in step i) being provided in particular such that the filter tow bale compressed in the baler has a bale density of at least 300 kg / m 3 .
  • In this context, it is advantageous if in process step ii) the packaging casing is applied to the compressed filter tow bales in such a way that in the volume enclosed by the packaging casing at a temperature of 20 ° C a maximum of 650 liters of air, preferably a total of a maximum of 450 liters of air and more preferably a maximum of 400 liters of air are included.
  • Alternatively or additionally, it is conceivable if, in method step i), the filter tow bale compressed in the baler is provided in cuboid form between a cover film part 11 and a bottom film part 12, wherein in the subsequent process step ii) the compressed filter -Tow bales completely enclosing, airtight packaging wrapper is formed by welding or gluing the two film parts.
  • According to one aspect of the invention, which has also found its way into the packaging method shown schematically in the drawings, it is provided that in method step i) the filter tow bales compressed in the baler are arranged in cuboid between a cover film part 11 and a bottom film part. Folienteil 12 is provided. With regard to the then following process step ii), it is provided that this process step comprises the following process steps:
    • a) applying a sleeve film part 13 to the side surfaces of the compressed filter tow bale, wherein the sleeve film part 13 has a lateral surface with two opposite end regions;
    • b) frontal merge of the opposite end portions of the sleeve film part 13; and
    • c) connecting the opposite end portions of the sleeve film part 13 with each other and connecting the lateral surface of the sleeve sheet member 13 with the bottom sheet member 12 and the lid sheet member 11 such that a total of the compressed filter tow bales completely enclosing, airtight packaging wrapper is formed.
  • In this case, it is particularly advantageous if in step a) the sleeve film part 13 is applied around the side surfaces of the compressed filter tow bale such that at least 80%, preferably at least 90% and more preferably at least 95% of the lateral surface of the sleeves Sheet 13 directly abuts the high density filter tow material and so contacts or at least less than 15 mm from the high density filter tow material.
  • In a development of this embodiment of the packaging method according to the invention, it is provided that in method step i) the filter tow bales compressed in a baler have a cuboid shape with a preferably rectangular base area of at least 6,500 cm 2 and preferably at least 8,500 cm 2 , and a height of at least 75 cm and preferably of at least 85 cm, wherein in process step i) the filter tow bale is provided such that the compressed in the baler filter tow bales has a bale density of at least 300 kg / m 3 .
    In this case, it is provided that, in method step a), the sleeve film part 13 is applied to the side surfaces of the compressed filter tow bale in such a way that is enclosed by the sleeve film part 13, the cover film part 11 and the bottom film part 12 Volume at a temperature of 20 ° C a maximum of 650 liters of air, preferably a total of at most 450 liters of air and more preferably a total of at most 400 liters of air are included.
  • Alternatively or additionally, it is conceivable if in step a) the sleeve film part 13 is applied to the side surfaces of the compressed filter tow bale such that at a temperature of 20 ° C maximum 50 liters, preferably at most 30 liters, and More preferably, at most 10 liters of air is trapped between the shell surface of the sleeve film member 13 and the high density filter tow material.
  • For this purpose, it is provided in particular that in step a) the sleeve film part 13 is applied with an average application voltage of at least 50 N and preferably of at least 75 N around the side surfaces of the compressed filter tow bale.
  • According to a development of the embodiments described last, it is provided that method step ii) further comprises the following method steps:
    • d) forming a vertical weld seam, in particular fin seam, in a vertical overlapping region formed at the end-side merging of the opposite end regions of the sleeve film part 13;
    • e) biasing the sleeve film part 13 in the direction of the vertically extending weld and fixing, in particular temporary fixing, of the sleeve film part 13 in its prestressed state;
    • f) forming a horizontally encircling overlap region between the upper end region of the sleeve film part 13 and a peripheral edge region of the lid film part 11 and forming a horizontally circumferential overlap region between the lower end region of the sleeve film part 13 and a peripheral edge region of the bottom film part 12; and
    • g) forming in each case a circumferential weld, in particular fin seam, in the horizontal circumferential overlap areas.
  • In this case, it is provided in particular that the vertically extending weld seam and the peripheral weld seams in the horizontally encircling overlap areas are designed in such a way that with the bottom film part 12, with the lid film part 11 and with the sleeve film part 13, the compressed filter tow -Ballen completely enclosing, airtight packaging wrapper is formed.
  • Preferably, in order to form the horizontally encircling overlap regions in method step f), the respective edge regions of the cover film part 11 and the bottom film part 12 are pulled outwards from the bale. On the other hand, it is likewise advantageous if, in method step e), the sleeve film part 13 is prestressed with an average preloading force of at least 50 N and preferably of at least 75 N.
  • In a preferred realization of the last-mentioned embodiments, it is provided that, in method step a), the sleeve film part 13 is applied to the side surfaces of the filter tow bale so that the vertical overlapping region is preferably centered between two vertically extending corner edges of the filter tow. Balls is arranged, wherein for biasing the sleeve film part 13 in the direction of the vertical weld in the process step e) is preferably pushed manually film material of the sleeve film part 13 in the direction of the vertical weld in such a way that in the horizontal direction of the overlap area is increased.
  • In principle, it is advantageous if, in method step g), the circumferential weld seam is formed with a predetermined or definable minimum distance from the bale in the horizontally encircling overlapping regions. Here, the predetermined or definable minimum distance should be in a range between 2 to 20 cm and preferably in a range between 5 to 10 cm. In particular, the pre-determined or definable minimum distance between the circumferential weld and the bale should be selected depending on the elastic recovery behavior of the compressed filter tow material after release of the filter tow material from the baler.
    According to a preferred realization of the last-mentioned exemplary embodiments, it is provided that in process step e) the sleeve film part 13 is fixed temporarily in its prestressed state, specifically by laterally folding over the vertical overlap region and preferably releasing the folded overlap region with an adhesive tape or the like Fixing agent is fixed to the bale.
  • Alternatively or additionally, it is advantageous if, in method step a), the sleeve film part 13 is placed in a biased manner on the side surfaces of the filter tow bale in the horizontal direction. In this context, it is particularly conceivable if, in method step a), the sleeve film part 13 is positioned relative to the cover film part 11 and the bottom film part 12 and temporarily fixed in the positioned state. For positioning and temporary fixation of the sleeve film part 13, preferably the upper and / or lower edge region of the sleeve film part 13 is held by a holding device on the baler.
  • In this context, it is particularly advantageous if the baler has an upper and a lower pressure plate, between which the compressed filter tow bale is provided in method step i), wherein for positioning and temporary fixing of the sleeve film part 13, the upper edge region of the sleeve film part 13 is held by a holding device arranged on the upper press plate of the baler, in particular by clamping. In this case, the temporary fixation of the sleeve film part 13 should be achieved in particular immediately before the formation of the horizontally encircling overlap areas in method step f).
  • According to one aspect of the present invention, method step i) comprises the following method steps:
    • Preparing a filling can by garnishing the bottom of the filling can with the bottom foil part 12;
    • Preparing a press ram 10 of the baler by garnishing the press ram 10 with the lid film part 11;
    • Inserting the filter tow material to be packed into the prepared filling can; and
    • Pressing the inserted into the prepared filling can Filter-Tow material by the prepared press ram 10 is driven from above into the filling can.
  • Alternatively, it is conceivable if the method step i) comprises the following method steps:
    • Preparing a fixed press yoke by garnishing the press yoke with the lid film part 11;
    • Preparing a ram 10 'of the baler by garnishing the ram 10' with the bottom sheet member 12;
    • Placing the filter tow material to be packaged between the prepared press yoke and the ram 10 '; and
    • Pressing the filter tow material by the prepared press ram 10 'is moved from below in the direction of the press yoke.
  • With regard to method step iii), it is provided in particular that the baler has an upper and a lower press plate, wherein the filter tow bale is released from the baler by gradually increasing the distance between the upper and the lower press plate. In this case, it is provided in particular that in a first step, the distance between the upper and the lower pressure plate is increased by 10 to 35 mm, preferably by 15 to 30 mm, and more preferably by 20 to 25 mm. Preferably, in a second step delayed from the first step, the distance between the upper and lower press plates is increased to at least 1200 mm.
  • In particular, it is advantageous if, before releasing the filter tow bale completely enclosed in method step ii) with the airtight packaging casing from the baler, the filter tow bales are compressed in the baling press for at least 180 s and preferably for at least 250 s is that a bale density of at least 300 kg / m 3 is present. In this way it is ensured that the elastic recovery behavior of the filter tow material is sufficiently reduced.
    The invention is not limited to the exemplary embodiment of the packaging method according to the invention shown in the drawings, but results from a synopsis of all features disclosed herein.
    In particular, the invention also relates to a filter tow bale in cuboid shape produced by the process according to the invention, in particular with a packing density of at least 250 kg / m3.

Claims (16)

  1. A method of producing a packed bale of high density filter tow material, the method comprising the steps of:
    Providing a compressed in a baler filter tow bale in cuboid shape; and
    ii) packaging the compressed filter tow bale with an airtight packaging wrapper completely enclosing the compressed filter tow bale;
    wherein in process step ii) the packaging wrapper is applied to the compressed filter tow bales such that at least 80%, preferably at least 90%, and more preferably at least 95% of the wrapper wrap is directly adjacent to the high density filter tow material and that of therefore, touched or at least less than 15 mm from the high density filter tow material.
  2. The method of claim 1, wherein in step ii) the packaging wrapper is applied to the compressed filter tow bales such that at a temperature of 20 ° C a maximum of 50 liters, preferably at most 30 liters, and more preferably at most 10 liters of air between the Packaging shell and the highly compressed filter tow material is included.
  3. Method according to claim 1 or 2, wherein in method step i) the filter tow bale compressed in a baler has a parallelepiped shape with a preferably rectangular base area of at least 6,500 cm 2, and preferably of at least 8,500 cm, adapted to the dimensions of a transport pallet, in particular Europool pallet 2 , and having a height of at least 75 cm, and preferably of at least 85 cm, wherein in method step i) the filter tow bale is provided such that the compressed in the baler filter tow bales a bale density of at least 300 kg / m 3 , and wherein in step ii) the packaging wrapper is applied to the compressed filter tow bales such that in the of the Packaging envelope enclosed volume at a temperature of 20 ° C a maximum of 650 liters of air, preferably a total of at most 450 liters of air and more preferably a total of more than 400 liters of air are included.
  4. The method of any one of claims 1 to 3, wherein in step ii) the compressed filter tow bale is packaged with the packaging wrapper such that the volume enclosed by the wrapper wrap around after releasing the packaged filter tow bale from the baler at least 32 liters and preferably by at least 70 liters can increase, without causing the material of the packaging wrapper is stretched or stretched.
  5. Method according to one of claims 1 to 4, wherein in step i) the compressed in the baler filter tow bales is provided in parallelepiped between at least one lid foil part and a bottom foil part, and wherein in step ii) the compressed filter -Tow-bales completely enclosing, airtight packaging wrapper is formed by welding or gluing of the film parts.
  6. Method according to one of claims 1 to 5, wherein in step i) the compressed in the baler filter tow bales is provided in parallelepiped form between a lid film part and a bottom foil part, and wherein the method step ii) comprises the following method steps:
    a) applying a sleeve film part to the side surfaces of the compressed filter tow bale, wherein the sleeve film part has a lateral surface with two opposite end portions;
    b) merging the opposite end portions of the sleeve sheet member; and
    c) connecting the opposite end regions of the sleeve film part to one another and connecting the jacket surface of the sleeve film part to the bottom film part and the cover film part in such a way as to form an airtight packaging cover which completely encloses the compressed filter tow bale as a whole,
    wherein in step a) the sleeve film part is applied around the side surfaces of the compressed filter tow bale such that At least 80%, preferably at least 90%, and more preferably at least 95% of the shell surface of the sleeve film member directly abuts the high density filter tow material and contacts it or at least less than 15mm from the high density filter tow material ; and wherein the sleeve film part is listed in particular as a flat film.
  7. Method according to claim 6, wherein in method step i) the filter tow bale compressed in a baler has a cuboid shape with a preferably rectangular base area of at least 6,500 cm 2, and preferably of at least 8,500 cm 2 adapted to the dimensions of a transport pallet, in particular Europool pallet, and has a height of at least 75 cm and preferably at least 85 cm,
    wherein in process step i) the filter tow bale is provided such that the compressed in the baler filter tow bale has a bale density of at least 300 kg / m 3 , and
    wherein in step a) the sleeve film part is so applied to the side surfaces of the compressed filter tow bale that in the of the sleeve film part, the lid sheet part and the bottom film part enclosed volume at a temperature of 20 ° C. a maximum of 650 liters of air, preferably a total of at most 450 liters of air and more preferably a total of at most 400 liters of air are included.
  8. The method of claim 6 or 7, in particular claim 7, wherein in step a) the sleeve film part is applied to the side surfaces of the compressed filter tow bale such that at a temperature of 20 ° C a maximum of 50 liters, preferably a maximum of 30 Liter, and more preferably a maximum of 10 liters of air is trapped between the shell surface of the sleeve film part and the high density filter tow material.
  9. Method according to one of claims 6 to 8, wherein in step a) the sleeve film part with an average application voltage of at least 50 N and preferably of at least 75 N around the side surfaces of the compressed filter tow bale is applied.
  10. Method according to one of claims 6 to 9, wherein the method step ii) further comprises the following method steps:
    d) forming a vertically extending weld seam, in particular fin seam, in a vertical overlapping region formed when the opposite end regions of the sleeve foil part are joined end-to-end;
    e) biasing the sleeve film part in the direction of the vertically extending weld and fixing, in particular temporary fixing, of the sleeve film part in its prestressed state;
    f) forming a horizontally encircling overlap region between the upper end region of the sleeve film part and a peripheral edge region of the lid film part and forming a horizontally circumferential overlap region between the lower end region of the sleeve film part and a peripheral edge region of the bottom film part; and
    g) forming in each case a circumferential weld, in particular fin seam, in the horizontal circumferential overlap areas
    wherein the vertically extending weld and circumferential welds in the horizontal peripheral overlap regions are made such that an airtight packaging wrapper completely enclosing the compressed filter tow bale is formed with the bottom film member, the lid film member, and the sleeve film member becomes; and wherein in process step e) the sleeve film part is preferably biased with an average biasing force of at least 50 N and preferably at least 75 N.
  11. The method of claim 10, wherein in step g), the circumferential weld is formed at a predetermined or settable minimum distance from the bale in the horizontally encircling overlap regions, wherein the predetermined or definable minimum distance is preferably in a range between 2 to 20 cm and more preferably is in a range between 5 to 10 cm, and / or wherein the predetermined or definable minimum distance between the circumferential weld and the bale depends on the elastic recovery behavior of the compressed filter tow material after release of the filter tow material from the baler.
  12. Method according to one of claims 6 to 11, wherein in step a) the sleeve film part is placed biased on the side surfaces of the filter tow bale in the horizontal direction.
  13. Method according to one of claims 1 to 11, wherein the method step i) comprises the following method steps:
    Preparing a filling can by garnishing the bottom of the filling can with the bottom foil part;
    - Preparing a press ram of the baler by garnishing the press ram with the lid film part;
    - placing the filter tow material to be packed in the prepared filling can; and
    - Pressing the inserted into the prepared Füllkanne filter tow material in the baler;
    or wherein method step i) comprises the following method steps:
    - preparing a fixed press yoke by garnishing the press yoke with the lid film part;
    - Preparing a press ram of the baler by garnishing the press ram with the bottom film part;
    Arranging the filter tow material to be packaged between the prepared press yoke and the press die; and
    - Pressing the filter tow material by the prepared press ram is moved from below in the direction of the press yoke.
  14. A method according to claim 13, wherein the cover film part and / or the bottom film part as a flat film, in particular rectangular flat film, is executed /, and / or wherein the lid film part and the bottom film part are each formed as rectangular flat films with edge lengths which are at least 10 cm, preferably at least 20 cm and more preferably 30 to 40 cm longer than the horizontal circumferential edge lengths of the compressed filter tow bales.
  15. Method according to one of claims 1 to 14, wherein the packaging wrapper comprises at least one film part made of plastic material, which polyethylene, in particular LDPE, or modified polyethylene (LLDPE), wherein the at least one film part in particular a composite film having a polyamide and / or a polyethylene layer is, and / or wherein the at least one film part preferably has a thickness of about 100 to 400 pm.
  16. Packed filter tow bales in parallelepiped form, in particular with a packing density of at least 250 kg / m3, characterized in that the filter tow bale was produced by a method according to one of claims 1 to 15.
EP15165662.6A 2015-04-29 2015-04-29 Method for the manufacture of a packaged filter tow bale Withdrawn EP3088309A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15165662.6A EP3088309A1 (en) 2015-04-29 2015-04-29 Method for the manufacture of a packaged filter tow bale

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
EP15165662.6A EP3088309A1 (en) 2015-04-29 2015-04-29 Method for the manufacture of a packaged filter tow bale
JP2017556606A JP6603328B2 (en) 2015-04-29 2016-04-28 Method for manufacturing prepackaged filter tow bale
BR112017023194A BR112017023194A2 (en) 2015-04-29 2016-04-28 method for producing a bundled bale and cuboidally packed acetate cable bale
PCT/EP2016/059544 WO2016174162A1 (en) 2015-04-29 2016-04-28 Method for producing a packed filter tow bale
KR1020177034455A KR20180018516A (en) 2015-04-29 2016-04-28 Manufacturing method of packed filter toe veil
BE2016/0083A BE1024772B1 (en) 2015-04-29 2016-04-28 Method of making a packaged filter tow bale
CN201680036955.XA CN107709168A (en) 2015-04-29 2016-04-28 The method of the filter filament bundle of production packing
RU2017141590A RU2670857C9 (en) 2015-04-29 2016-04-28 Method for obtaining packed bale of filter tow
US15/569,847 US20180305052A1 (en) 2015-04-29 2016-04-28 Method for producing a packed filter tow bale
MX2017013914A MX2017013914A (en) 2015-04-29 2016-04-28 Method for producing a packed filter tow bale.
DE112016001298.5T DE112016001298A5 (en) 2015-04-29 2016-04-28 Method for producing a packaged tow-ball filter

Publications (1)

Publication Number Publication Date
EP3088309A1 true EP3088309A1 (en) 2016-11-02

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EP15165662.6A Withdrawn EP3088309A1 (en) 2015-04-29 2015-04-29 Method for the manufacture of a packaged filter tow bale

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US (1) US20180305052A1 (en)
EP (1) EP3088309A1 (en)
JP (1) JP6603328B2 (en)
KR (1) KR20180018516A (en)
CN (1) CN107709168A (en)
BE (1) BE1024772B1 (en)
BR (1) BR112017023194A2 (en)
DE (1) DE112016001298A5 (en)
MX (1) MX2017013914A (en)
RU (1) RU2670857C9 (en)
WO (1) WO2016174162A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3409829A1 (en) 2017-05-30 2018-12-05 Rhodia Acetow GmbH Composition comprising hydrocarbons, emulsifiers and water, its use and products comprising such composition
EP3409786A1 (en) 2017-05-31 2018-12-05 Rhodia Acetow GmbH Marked cellulose acetate fibres, manufacturing methods and products comprising such fibres

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7635849U1 (en) 1976-11-13 1977-03-03 Rhodiaceta Ag Packaging for compressed fiber filaments or tows
US4577752A (en) 1984-05-04 1986-03-25 Eastman Kodak Company High density tow bale and method for forming it
DE3819854A1 (en) * 1987-06-10 1989-01-05 Autefa Maschinenfab Process and apparatus for the packaging of pressed bales
US5460590A (en) 1993-06-18 1995-10-24 Rhone-Poulenc Rhodia Aktiengesellschaft Method and apparatus for producing fiber skeins
EP0771741A1 (en) * 1995-10-30 1997-05-07 Hoechst Celanese Corporation Reusable bale wrap kit for compressed, resilient fibers
DE10029503A1 (en) * 2000-06-21 2002-01-03 Allfo Vakuumverpackungen Method for packing insulating material made of fibre involves compressing material and wrapping it in air tight sealed foil to reduce bulky volume
WO2002032238A2 (en) 2000-10-20 2002-04-25 Messmer, Ludwig Highly compressed filter tow bales
WO2003089309A2 (en) 2002-04-22 2003-10-30 Rhodia Acetow Gmbh Highly compressed filter tow bale and method for the production thereof
WO2007001810A1 (en) * 2005-06-20 2007-01-04 Eastman Chemical Company Packages, packaging systems, methods for packaging, and apparatuses for packaging
US8161716B2 (en) * 2009-03-31 2012-04-24 Daicel Chemical Industries, Ltd. Method of packaging a compressed filter tow bale

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA9603563B (en) * 1995-05-15 1996-11-19 Saint Gobain Isover Process and device for compressing and packaging compressible products
GB0517551D0 (en) * 2005-08-27 2005-10-05 Acetate Products Ltd Process for making filter tow
US7487720B2 (en) * 2007-03-05 2009-02-10 Celanese Acetate Llc Method of making a bale of cellulose acetate tow

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7635849U1 (en) 1976-11-13 1977-03-03 Rhodiaceta Ag Packaging for compressed fiber filaments or tows
US4577752A (en) 1984-05-04 1986-03-25 Eastman Kodak Company High density tow bale and method for forming it
DE3819854A1 (en) * 1987-06-10 1989-01-05 Autefa Maschinenfab Process and apparatus for the packaging of pressed bales
US5460590A (en) 1993-06-18 1995-10-24 Rhone-Poulenc Rhodia Aktiengesellschaft Method and apparatus for producing fiber skeins
EP0771741A1 (en) * 1995-10-30 1997-05-07 Hoechst Celanese Corporation Reusable bale wrap kit for compressed, resilient fibers
DE10029503A1 (en) * 2000-06-21 2002-01-03 Allfo Vakuumverpackungen Method for packing insulating material made of fibre involves compressing material and wrapping it in air tight sealed foil to reduce bulky volume
WO2002032238A2 (en) 2000-10-20 2002-04-25 Messmer, Ludwig Highly compressed filter tow bales
WO2003089309A2 (en) 2002-04-22 2003-10-30 Rhodia Acetow Gmbh Highly compressed filter tow bale and method for the production thereof
WO2007001810A1 (en) * 2005-06-20 2007-01-04 Eastman Chemical Company Packages, packaging systems, methods for packaging, and apparatuses for packaging
US8161716B2 (en) * 2009-03-31 2012-04-24 Daicel Chemical Industries, Ltd. Method of packaging a compressed filter tow bale

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Publication number Publication date
US20180305052A1 (en) 2018-10-25
CN107709168A (en) 2018-02-16
RU2670857C1 (en) 2018-10-25
BE1024772B1 (en) 2018-07-02
JP6603328B2 (en) 2019-11-06
BR112017023194A2 (en) 2018-07-31
JP2018514472A (en) 2018-06-07
DE112016001298A5 (en) 2017-12-28
BE1024772A1 (en) 2018-06-26
KR20180018516A (en) 2018-02-21
MX2017013914A (en) 2018-06-06
RU2670857C9 (en) 2018-11-30
WO2016174162A1 (en) 2016-11-03

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