CN101903251B - Method for manufacturing a palletless packaging unit - Google Patents

Method for manufacturing a palletless packaging unit Download PDF

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Publication number
CN101903251B
CN101903251B CN2008801184950A CN200880118495A CN101903251B CN 101903251 B CN101903251 B CN 101903251B CN 2008801184950 A CN2008801184950 A CN 2008801184950A CN 200880118495 A CN200880118495 A CN 200880118495A CN 101903251 B CN101903251 B CN 101903251B
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CN
China
Prior art keywords
storehouse
film
meshing zone
retaining layer
stack
Prior art date
Application number
CN2008801184950A
Other languages
Chinese (zh)
Other versions
CN101903251A (en
Inventor
P·阿卡
R·布里肯费尔德
N·弗伦茨尔
Original Assignee
莫勒斯机械制造有限公司
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
Family has litigation
Priority to EP07023274A priority Critical patent/EP2036818B1/en
Priority to EP07023274.9 priority
Application filed by 莫勒斯机械制造有限公司 filed Critical 莫勒斯机械制造有限公司
Priority to PCT/EP2008/010092 priority patent/WO2009068294A1/en
Publication of CN101903251A publication Critical patent/CN101903251A/en
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39276186&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN101903251(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Publication of CN101903251B publication Critical patent/CN101903251B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
    • B65B9/135Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state for palletised loads

Abstract

The present invention relates to a method for the production of a palletless packaging unit (24) comprising multiple packaging objects (4) stacked into a product stack (2), wherein the packaging objects (4) are stacked such that at least two engagement regions (10) are formed on at least one stack level for the fork arms of a forklift, the product stack (2) is encased at the engagement region thereof using a first film (14), the product stack (16) encased on one side is turned such that the part of the product stack (16) having the engagement regions (10) is placed at the bottom, and the product stack (16) is encased using a second film (20) reaching up to the first film (14). The aim of the present invention is to provide an improved method for the production of a palletless packaging unit. In order attain said aim, the invention proposes that the first and the second films each be formed from a tube, the circumference of which is initially smaller than the circumference of the product stack, and which is stretched before encasing the product stack to a circumference greater than the circumference of the product stack, and has an elastic circumferential tension on the product stack.

Description

For the production of the method without the supporting plate encapsulation unit
Technical field
The present invention relates to a kind of for the production of the method without the supporting plate encapsulation unit, this comprises a plurality of packaged articles that are stacked in the product storehouse without the supporting plate encapsulation unit, wherein packaged articles is stacked as so that form at least two meshing zonees at least one stack level of the prong that is used for the fork load-unload machine, at least in the meshing zone of product storehouse, use the first film product wrapping storehouse, it is so that the part with meshing zone of this product storehouse is placed on the bottom that the wrapped product storehouse of one side is overturn, and uses the second film product wrapping storehouse that extends preferably in the meshing zone.
Background technology
This method can be learnt from the DE 26 14 558 that authorizes to the applicant and DE 27 02613.In this known method, the drawing shrinking hood is as the first film above the product storehouse, and the subsequently thermal contraction by with another plastic film welding of just being placed on before on the product storehouse time should be covered and closely is placed on the product storehouse.After turning operation, above storehouse another shrink film cover of drawing as the second film, and this another shrink film cover equally by with the first film overlap district's welding the time thermal contraction be retracted on the storehouse.
Verified this universal method is particularly useful for forming following encapsulation unit, these encapsulation units comprise stacking bag or bag, for example bagged concrete, packed gypsum or packed mortar, namely particularly in following field, wherein come the stored prod storehouse uncommon with supporting plate, and/or after unloading packaged articles, return the supporting plate trouble that becomes too.
Yet, the execution of this universal method required, be used for so that two films be retracted to the consumption of the heat energy on the product storehouse and apply all very complicated, particularly for two retes each other for the welding.It is essential that this welding is considered to for being connected to for lower unit without the supporting plate layer, although wherein owing to not existing supporting plate to lose the smooth surface of depositing, this unit still allows the transportation of multiple processing and safety, and does not exist the product storehouse will lose its stable risk.
The present invention is based on this problem and provide a kind of for the production of the Innovative method without the supporting plate encapsulation unit.
Summary of the invention
In order to solve described problem, the present invention proposes the method for the feature that comprises claim 1.The difference of described method and general prior art is, the first film and the second film all are formed from tubes, its girth is initially less than the girth of product storehouse, and it is stretched to reach the girth greater than the girth of product storehouse before the product wrapping storehouse, and utilizes elastic periphery to be placed on the product storehouse to tension force.In other words, in universal method, by stretch two film pipes and by on respect to the opposite sense of the altitude axis of product storehouse on the product storehouse two film pipes of drawing produce without the supporting plate encapsulation unit.Surprisingly, have been found that the film pipe (for example disclosed in EP 1 013 549) that can use equally stretching produce following without the supporting plate encapsulation unit, even this without the supporting plate encapsulation unit through also showing necessary intensity and the stability on the size and particularity after the multiple processing.According to the unexpected test result that the applicant obtains, the encapsulation unit of producing by this way can also be produced in the failure-free mode, and does not need to be used to form the supporting plate of storage area.At this, must guarantee to be stacked as so that be used for the meshing zone of prong around the packaged articles of meshing zone and allow prong to introduce, even especially the first film is being installed as so that described film with tangent mode with in the situation of the edge interconnection of meshing zone, also be like this.This and the adjacent area that is not precluded within the opposite flank of product storehouse are provided for the possibility of the meshing zone of prong.The meshing zone that is used for prong can for example form so that create clearance envelope between two packaged articles that are arranged on the stack level.Yet usually, meshing zone will be formed on the opposite edges of product storehouse, thereby so that the prong of fork load-unload machine can be incorporated in the meshing zone by moving towards each other prong equally, these prongs initially are placed near the product storehouse side direction.For example, get involved by this of prong, the membrane material at two edges that can initial tangent ground bridge joint product storehouse pushes in meshing zone, thereby so that prong near formation product storehouse layer.
Meshing zone is formed by so-called special layers usually, and this special layers is stacking must be different from the common layer of product storehouse and have than the less floor space of described common layer.Formed in the situation of product storehouse by measure-alike packaged articles (for example filling the sack of bulk material), this special layers comprises than common layer packaged articles still less.For the formation of meshing zone, all right folded stacking a plurality of special layers in ground, thus obtain having larger engagement meshing zone highly.
According to a preferred embodiment of the invention, the first film and the second film are made of same pipe.If the product storehouse that will wrap up after turning operation just in time is used the second film in its position that equally has been used the covering of the first film and covers, this can be same pipe.In addition, using adhesives and/or using friction to strengthen the surface provides the first film and/or can provide the second film on the inside on can be externally, thereby so that is provided at the each several part of two films in the coincidence district of the first film and the second film and catches on each other or adhere to.
In order to increase particularly the during transportation intensity of encapsulation unit, according to another decision design of the present invention, suggestion was placed retaining layer at the product storehouse before using the first film product wrapping storehouse, namely be placed as so that the packaged articles that described retaining layer covers meshing zone and provides in its adjacent area.After finishing, encapsulation unit through wrapping up is by particularly strengthening near meshing zone and the retaining layer on meshing zone, thereby so that when the fork load-unload machine rises the product storehouse, prong or the horizontal product stack layer between the single prong of process lower curved have been prevented reliably.In above-mentioned decision design, meshing zone should be provided as the relatively vertically side that is directly adjacent to the product storehouse, namely on the opposite edges of product storehouse, thereby so that by moving towards each other prong, the prong of fork load-unload machine can at first be directed in the both sides through the product storehouse, and can only be brought in the meshing zone and under the first film and the retaining layer.Therefore, prong is introduced into basically, and can owing to laterally clamping motion, namely not destroy film owing to moving towards each other prong.
Retaining layer should preferably have net structure, and it comprises rough surface and demonstrate higher puncture resistance, shows certain resistivity in order to collide at the fork load-unload machine in the situation of retaining layer for the prong that may strike the fork load-unload machine.This can prevent the situation that prong cuts open retaining layer and destroys packaged articles.The rough surface of retaining layer can be realized for smooth film surface in other cases by revising.Especially, film should not waxed.Provide suitably coarse surface by fabric especially.Must be noted that at this fabric should be relatively coarse, thereby so that the profile of the filament that interweaves creates specific roughness of surface on the surface of retaining layer.Particularly preferably, retaining layer should be formed by elastomeric material.Therefore, by the fabric that syntheticfibres consists of, such as PP or PE fiber, should be preferred.Particularly preferably, the material of the retaining layer respectively material with the first film and the second film is identical, this has brought following advantage, and namely after the product storehouse had been taken apart, product wrapping storehouse or all layers that are placed on the product storehouse can be reused (recycling) in the mode of the best.The roughness of retaining layer has improved its stationarity between article and the first tubular cover.
Certainly, before use the first film wrapped up described storehouse, some retaining layers were placed at the product storehouse in a folded ground at first in the above described manner.Retaining layer mainly and even be to provide exclusively the machinery of encapsulation unit downside to strengthen.Therefore, retaining layer can strengthen film web by fabric and forms.As alternative or additional, retaining layer can be formed by the width of cloth that strengthens with cellular structure.In this preferred embodiment, cellular structure can be permeable cellular structure.Each rope strand of grid is as the stretching string, itself so that the bottom of encapsulation unit strengthened.Retaining layer can comprise plastic film material, cardboard or knitted fabric.The patch unit of plastics, metal or timber is suitable for equally respectively forming retaining layer.
Can provide in the phase boundary between retaining layer and the first film web device of combining closely that helps between two film webs equally.For example, can between the first film web, provide adhesives to be combined in retaining layer.Especially, in a preferred embodiment, wherein the first film and/or the second film were melted so that formation is covered and sliced off from the first film of delivery film material and/or the rope strand of the second film before the product wrapping storehouse, use film to use appropriate procedure with respect to the dimensional configurations of product storehouse floor space and during the downside afterwards (namely in the top side during the location of the first film) that covers the product storehouse, can finish the specific stretching of membrane material, realize the combination of the improvement between retaining layer and the first membrane material.If retaining layer has the forming net lattice structure, thereby then its first film that can suitably stretch by the top side at the product storehouse is extruded in the membrane material of the first film and is fixed therein.
For example, when with the displacement of stacking product storehouse and be incorporated into when (wherein using the first film product wrapping storehouse) in the first workstation, retaining layer can be placed on the top side of containing meshing zone.For example, the retaining layer of dangling downwards can be carried by the product storehouse of parallel motion, and after one section endlessly rope strand of supplying with of desired length, can downcut film web from described rope strand under drawing.Expect following program at this, the top side of product storehouse during wherein retaining layer not only covers and uses the first film to cover, but also extend at least to a certain extent adjacent the and relative sidewall that exceeds the product storehouse.In a kind of like this configuration, the covering of using at least the first film to carry out afterwards has following effect, and the longitudinal component that is about to be shelved on the retaining layer on the product storehouse sidewall is towards this wall extruding, thereby so that retaining layer is further fixing with respect to the product storehouse.This has further improved the maintenance function of retaining layer, and it has guaranteed that each encapsulation unit in the packaged encapsulation unit can not be bent downwardly during rising.
Can also utilize elastic periphery will short tubular cover to be placed on the product storehouse as retaining layer to stretching, thereby the product storehouse is strengthened by the stretching cover in its underside area afterwards.The tubular cover of described weak point is extended 2 to 4 layers usually on the product storehouse, do not exceed its whole height but can not extend into.In order to simplify this program, short tubular cover is preferably formed by the membrane material of the first film, thus so that the tubular cover of lacking and can be produced and can be in the drawing on the product storehouse of same website with same equipment by the first film formed tubular cover (it covers whole height of whole product storehouse usually).
Retaining layer can the product storehouse is carried out stacking before and/or during or place afterwards, and can be arranged in whole or in part between the different layers of product storehouse, in order to retaining layer is fixed in the product storehouse.It is also conceivable that at first and place special layers in retaining layer, folding retaining layer on unique layer or top layer, and at stacking common layer after this.Then with 180 ° of stacking good product storehouse upsets and use the first film to cover.Again overturning after 180 °, using the second film to cover the product storehouse.
According to another preferred embodiment of the invention, before the first film is positioned, can place the bottom at the product storehouse and strengthen.Described bottom strengthens and can for example be made of cardboard, plastics, timber or metal membranaceous or sheet, and just is used when landing with afterwards downside whenever the product storehouse is pushed during the product storehouse is processed especially.During transportation and processing, the bottom strengthens protects the lowermost layer of the product storehouse of finishing not damaged.In addition, thus the bottom strengthens and may show certain hardness and to form basically hard bottom.
According to a preferred embodiment of the invention, on described storehouse from top side drawing the first film of comprising meshing zone until the underside area of product storehouse.Use this measure, be fixed to described storehouse around meshing zone and the first film of remaining on this place at the whole height of product storehouse, thereby so that do not need to worry following situation: namely the first film can be from the vertical landing of described storehouse when the fork load-unload machine rises the product storehouse, and as a result of, the packaged articles of lowermost layer is in gravity direction superior displacement and the stacking unitized construction of easy destruction.In order further to reinforce encapsulation unit, in this preferred embodiment, drawing the second film on whole product storehouse basically after upset, thereby so that when on the circumferential surface that flexibly is placed on the product storehouse, as abutting against on the product storehouse, and additionally fixed with inserting by the first film with the first film for the second film.The second film should cover the downside before the product storehouse, and at this moment, through upset, it is the top side, thereby so that the product storehouse cover and be protected in order to avoid infiltrate dust and moisture by the tubular cover that flexibly is placed on the product storehouse in the top side.
Preferably, drawing the second film on the product storehouse, thus so that described film ends at the At The Height of meshing zone.Preferably, drawing the second film on the product storehouse, thus so that described film can not hinder or only slightly hinder the engagement of the prong of fork load-unload machine.Preferably, when overwrite procedure finished, the second membrane material had been routed in the meshing zone, was namely thrown in from the contraction finger that is assigned to described contraction roller on one's own initiative under the driving of shrinking roller.Thereby at the At The Height of meshing zone the membrane material of the second film is supplied to described meshing zone.Owing to be used for the second film is placed on circumferential tension force on the product storehouse, two outer peripheral the first films of initial basically tangently bridge joint product storehouse and/or the material of retaining layer are pushed in meshing zone, thereby so that equally at the original contour of the outside of film web acquisition product storehouse.In other words, more materials of the second film are supplied in the meshing zone on the peripheral side have following effect, namely these zones can more easily be touched by the prong of fork load-unload machine, and can not destroy membrane material.
According to a preferred embodiment of the invention, the upper limb of transferring the contraction finger of film be positioned reposefully meshing zone the upper end, be the special layers of top when finishing part, the delivery film material.In this program, the membrane material of supplying with is directly carried under minimum common layer, thereby so that the first film that drawing is initially extended between two edges of product storehouse in the corner regions of product storehouse and/or the material of retaining layer, and at the mode of after this reproducing with profile film product wrapping storehouse tangently.
Preferably, during initiatively supplying with the second film from the contraction finger, the upper limb that shrinks finger is positioned the position corresponding with 0.25H to 0.5H under last common layer.At this, H is the height of common layer, i.e. common layer extension on the sense of motion that shrinks finger during covering the product storehouse.At this, the present invention with the following departure point that is found to be, namely forms the product storehouse especially, and this product storehouse comprises the goods through encapsulation that generation type is identical, the sack of for example filling.At this on the one hand, each independent stack layer of product storehouse has substantially the same height.This is in order to illustrate that generally speaking, stacking article on average have identical height.Sometimes, be encapsulated in the lower goods may owing to the location thereon through the deadweight of goods of encapsulation and compressed.Particularly in forming stacking sack, comprise in the situation of incompressible medium, do not have notable difference thereby also can bear scarcely at the lower level of the whole deadweight that must basically bear the product storehouse of product storehouse and the top layer that forms the product storehouse between the height of those layers of any added weight.
According to another preferred embodiment, employed the first film and/or the second film are the films that demonstrates the circumferential expansion service of less.Although should be noted that so-called horizontal stretch so that can be effectively from the product storehouse of circumferentially holding with a firm grip, on being placed on the product storehouse after, less circumferential stretching, extension is possible.
The further preferred embodiment of the method according to this invention is illustrated in the dependent claims.
Description of drawings
According to below in conjunction with the description of accompanying drawing to the embodiment of the invention, further details of the present invention and advantage will become obviously, in the accompanying drawing:
Fig. 1 shows the stacking product storehouse before the use film wraps up;
Fig. 2 shows the product storehouse shown in Figure 1 after placing retaining layer;
Fig. 3 shows the product storehouse illustrated in figures 1 and 2 after the first hood-shaped film of drawing thereon;
Fig. 4 shows and has wrapped up once and upset product storehouse shown in Figure 3 afterwards;
Fig. 5 shows after the second film that use is configured as tubular cover covers again the fully encapsulation unit of parcel;
Fig. 6 shows the stacking product storehouse before carrying out the film parcel according to second embodiment of the invention;
Fig. 7 shows the product storehouse shown in Figure 6 after placing retaining layer;
Fig. 8 shows the product storehouse that is centered on by retaining layer according to Fig. 7 after the stacking special layers thereon;
Fig. 9 shows the product storehouse shown in Figure 8 after the first hood-shaped film of drawing thereon;
Figure 10 shows the product storehouse that has wrapped up once and overturn Fig. 9 afterwards;
Figure 11 shows after the second film that use is configured as tubular cover covers again the fully encapsulation unit of parcel;
Figure 12 shows the details E according to Figure 11 that is right after before the overlapping operation of carrying out stop using the second film; And
Figure 13 shows the details of the amplification shown in Figure 12 after use the second film covers fully.
The specific embodiment
Fig. 1 shows the embodiment of product storehouse 2, and product storehouse 2 comprises a plurality of packaged articles 4 that are combined on the corresponding stack level, and it is formed by bagged cement in this example.Some grades packaged articles 4 is stacking by a folded ground.In common layer 5, each stack level demonstrates the packaged articles 4 of similar number, thereby obtains being essentially foursquare product storehouse 2.Only have upper layer just can form special layers 7 and comprise less packaged articles 4, thereby so that be formed with meshing zone 10 on the product storehouse edge between top side 6 and the opposite flank 8, meshing zone 10 is with the extension that meets at right angles with respect to shown in the drawings and side 8 parallel planes, and namely the entire depth at product storehouse 2 extends.With the width of meshing zone 10, namely side 8 and the side of in parallel therewith extending (namely top packaged articles 4.1,4.2 side) thus between distance be chosen as so that the prong of fork load-unload machine can be almost completely or be fully mobile under the common layer 5 of product storehouse 2 and enter meshing zone 10.
Stacking product storehouse 2 for example moves (referring to EP 1 013 549) along conveyor path (for example belt conveyor) towards the cover stretcher by this way.On the approach of going to the cover stretcher, 6 place retaining layer 12 in the top side, as shown in Figure 2.The size of the length of retaining layer 12 is confirmed as so that form the smooth width of cloth of retaining layer 12 and orientate as not only on top side 6 but also partly along the side 8.In Fig. 2, retaining layer 12 is in by loosely and is placed in the situation on the product storehouse 2.At this moment, in the cover stretcher, in a manner known way by shear tube material that continuous supplying gives by length, by the end side welding and downcut the tube material of a segment length and form tubular cover by the first film 14, wherein at first shrink finger in circumferential direction by expansion, namely on the girth greater than the floor space of product storehouse 2, the first film is shunk and elastic stretch, namely stretch.At this moment, during the relative motion on the short transverse of product storehouse 2, then the described tubular cover of stretching of crossing by at first being placed from shrinking under the finger drawing on the side 8 at product storehouse 2 on the top side 6 between contraction finger and product storehouse 2.For this purpose, shrinking finger is lowerd usually.After this, product storehouse 2 is capped at side parcel and in the top side by the first film 14.Overlapping operation is carried out as inserting with retaining layer 12.The first film 14 is placed on the circumferential wall of product storehouse 2, namely on the side 8, thereby with the width of cloth of retaining layer 12 to 2 extruding (referring to Fig. 3) of product storehouse.
The degree of depth with the product storehouse is consistent basically on the depth direction of product storehouse 2 for the size that retaining layer 12 has.In other words, the front edge of retaining layer 12 and lagging dege are arranged essentially parallel to the front side of product storehouse 2 and rear side and extend, and the front side of product storehouse 2 and rear side namely form the periphery of product storehouse 2 and with respect to those sides that meet at right angles and extend with the side of reference number 8 expressions in the accompanying drawings.
Above the product storehouse after drawing the first film 14, with the wrapped product storehouse upset with reference number 16 expression of a side, thereby so that during placing retaining layer 12 and drawing the first film 14, form the zone of top side 6 and form the bottom 18 of product storehouse 16 and be positioned bottom (Fig. 4) this moment.On this position, routinely the wrapped product storehouse of a side is supplied to the cover stretcher via transport path.Can on product storehouse 2, be tubular cover with 14 drawings of the first film by the cover stretcher.
As can be seen from Figure 5, in the end in method step, on the wrapped product storehouse 16 of a side, be tubular cover with 20 drawings of the second film equally, namely as follows, wherein the second film 20 is placed on during parcel for the first time on the zone of formation downside 22 of product storehouse 2, and usage level pretension (namely with the first film 14 as insert) is shelved on the circumferential wall 8 of product storehouse 2 equally at least, thereby obtains the encapsulation unit of finishing by reference number 24 expressions.In this unit, the first film 14 is with side 8 extruding of retaining layer 12 to product storehouse 2.In addition, after placing product storehouse 2, fix the first film 14 by the second film 20 and circumferential elastic stretch thereof with respect to product storehouse 2.The second film extends to according to the minimum common layer 5 among the first embodiment of Fig. 1 to Fig. 5.
This has created encapsulation unit 24, its dimensionally stable and be suitable for multiple processing.As a kind of rule, by moving towards each other prong, the prong of fork load-unload machine at first is directed to laterally through product storehouse 2 and after this laterally is being incorporated in the meshing zone 10.At this, the material of the first film 14 can be inwardly displaced.The invention is not restricted to shown embodiment.Operative installations makes the first film 14 and/or retaining layer 12 distortion in the meshing zone and place them near profile on product storehouse 2 especially.For this reason, membrane material can be mechanically connected to the product storehouse.
To the second embodiment shown in Figure 13, at first use 6 common layers 5 that consisted of by packaged articles 4 to come piled products storehouse 2 at Fig. 6.After this, place retaining layer 12 (referring to Fig. 7) in the top side of product storehouse 2.After this, will comprise that as insertion the special layers 7 of packaged articles 4.1 and 4.2 is stacked on the top side of product storehouse 2 with retaining layer 12.In this embodiment, also only formed a special layers 7.Certainly, can provide two special layers in a folded ground equally, these two special layers fitly form has identical floor space.
Stacking good product storehouse as shown in Figure 8 is used the first film 14 parcels 2 this moments, and the first film 14 is placed in the elastic stretch on the product storehouse on circumferential direction.At this, the first film 14 can utilize specific extending longitudinally to be placed on the product storehouse equally, in order to strain storehouse by the elastic stretch part of the first film 14 in vertical and circumferential direction.
The wrapped product storehouse 2 of a side shown in Fig. 9 is reversed 180 ° (referring to Figure 10) at this moment.After this, the second film 20 on the product storehouse 2 by drawing and utilize elastic periphery to be placed on the product storehouse to stretching (might also will utilize specific extending longitudinally).
Such as Figure 12 and shown in Figure 13, at this, by the packaged articles 4 of minimum common layer 5 with the circle mode with the material of the second film 20 be incorporated into be formed on special layers 7 with minimum common layer 5 between corner regions 26 in, these article protrude on special layers 7, wherein this circle is folded to form by film repeatedly, these films folding one by one (also might one folded one) from very close to.In an illustrated embodiment, for this purpose, when being used for installing on product storehouse 2 and the contraction finger 28 (not shown details) of the equipment of drawing tubular cover when being positioned the upper end of meshing zone 10, the drawing campaign will stop.On this position, the distance of the downside of the upper limb of contraction finger and minimum common layer 5 is between 0.5H and 0.25H, and H is corresponding to the height of product storehouse.This ratio is schematically drawn in Figure 12.On this position, will shrink finger 28 and locate than more close peripheral surface during using film to cover.Move inward equably and shrink finger 28, At The Height of latter two the common layer 5 on special layers 7 normally, the lucky At The Height of the common layer 5 of last on special layers 7 preferably is in order to reach the position shown in Figure 12.Shrinking the gathering campaign of finger 28 will be preferably finish when the contraction finger reaches position shown in Figure 12.Shrink finger and usually remain on this position, until membrane material is thrown in from shrinking finger 28.Then, shrinking finger 28 outwards moves and upwards is driven on the initial position.
For this reason, when arriving position shown in Figure 12, drive and be assigned to the contraction roller 30 that shrinks finger 28, in order to throw in the surplus material of the second film 20 and in order to it is supplied to corner regions 26 from shrinking finger 28.Usually will be corresponding to 1H to 5H, particularly preferably the film length corresponding to 1.5H to 2.5H supplies to meshing zone, so that the mode of reproducing with profile is pushed to the material of the first film 14 after the meshing zone 10.
In Figure 12, can see the beginning of this method step.The second film 20 will be inwardly lax owing to it circumferentially stretches, thereby the first film 14 is pushed in the corner regions 26.Because the second film 20 is deposited in a plurality of layer in the corner regions 26 (referring to Figure 13), the tension force of circumferential warp tension ratio the first film 14 that is therefore produced in corner regions 26 by the second film 20 is stronger, wherein the first film 14 initially extends between two edges 32,34 of product storehouse 2, the edge 32 (referring to Figure 10) that these two edges 32,34 namely are formed on the edge 34 on the downside of the product storehouse 2 of upset and are formed by the lower edge of the first common layer 5.Thereby the material of initial the first film 14 that extends is placed on by the second film 20 tangently approaches between two edges 32,34 of profile at the circumferential tension force on the product storehouse 2.This can obtain the meshing zone that is essentially rectangle 10 (referring to Figure 13) for the prong of fork load-unload machine.
The program of describing with reference to Figure 12 and Figure 13 can also be used at meshing zone the first film (for example during according to Fig. 9 it being positioned) closely being placed on the profile of product storehouse.From shrinking finger 28 the first film is supplied to meshing zone 10 under the driving of the contraction roller 30 that for this reason, can be associated at the At The Height of meshing zone 10.Also following situation might occur, namely at this in response to elastic property and the prestension and equally to a certain extent film pulled to the top side 6 of product storehouse of film on circumferential direction.Yet, can also send it in the meshing zone, to prevent following configuration, this disposes for example shown in Fig. 9 and Figure 10, and in this configuration, the first film 14 extends as connecting two edges 32,34.
In this embodiment, shrink finger, particularly shrinking the upper limb of finger, be positioned in the lower region of meshing zone, is the large At The Height (for example referring to Fig. 8) of the transition region between special layers 7 is with common layer 5 in the upright situation at product storehouse before the upset namely.
List of reference characters
2 product storehouses
4 packaged articles
5 common layers
6 top sides
7 special layers
8 sides
10 meshing zonees
12 retaining layers
14 first films
The wrapped product storehouse of 16 1 sides
18 bottoms
20 second films
22 downsides
24 encapsulation units
26 corner regions
28 shrink finger
30 shrink roller
32 edges
34 edges

Claims (14)

1. one kind for the production of the method without supporting plate encapsulation unit (24), the described a plurality of packaged articles (4) that are stacked in the product storehouse (2) that comprise without supporting plate encapsulation unit (24), wherein described packaged articles (4) is stacked as so that form at least two meshing zonees (10) at least one stack level of the prong that is used for the fork load-unload machine
At least in the meshing zone of described product storehouse (2), use the first film (14) parcel described product storehouse (2);
It is so that the part that comprises described meshing zone (10) of described product storehouse (16) is placed on the bottom that the wrapped product storehouse of one side (16) is overturn, and use the second film (20) parcel described product storehouse (16) that extends to described the first film (14)
Wherein,
Described the first film (14) and described the second film (20) all are formed from tubes, its girth is initially less than the girth of described product storehouse (2), and it is stretched to reach greater than the girth of the girth of described product storehouse (2) and utilizes elastic periphery to be placed on to tension force on the described product storehouse (2) before at the described product storehouse of parcel (2), and
Under the driving that is assigned to the contraction roller (30) that shrinks finger (28), to supply to described meshing zone (10) from the contraction finger (28) that during drawing, launches the membrane material of described the second film (20) at described second film (20) of the At The Height of described meshing zone (10) so that initially basically tangently the material of two of the described product storehouse of bridge joint (2) outer peripheral described the first films (14) by propelling movement in described meshing zone (10).
2. method according to claim 1 is characterized in that, described the first film (14) and described the second film (20) are made of same pipe.
3. method according to claim 1 and 2, it is characterized in that, at first place the packaged articles (4) of retaining layer (12) to cover described meshing zone (10) and in its adjacent area, to provide at described product storehouse (2), and use described the first film (14) parcel described product storehouse (2) with described retaining layer (12) as inserting ground subsequently.
4. method according to claim 3, it is characterized in that, as follows described retaining layer (12) is placed as the film web on the described product storehouse (2), described mode is so that at least in part extension on the relatively vertically side (8) of described product storehouse (2) of described retaining layer (12).
5. method according to claim 3 is characterized in that, described retaining layer (12) is placed as have elastic periphery on the described product storehouse (2) to the tubular cover of the weak point that stretches.
6. method according to claim 3 is characterized in that, described retaining layer (12) is formed by the membrane material of described the first film (14).
7. method according to claim 3 is characterized in that, described retaining layer (12) strengthens film web by fabric or fabric and consists of.
8. method according to claim 1 is characterized in that, at described the first film of drawing (14) before, places the bottom reinforce at described product storehouse (2).
9. method according to claim 1, it is characterized in that, on described storehouse from described the first film of top side (6) drawing (14) that comprises described meshing zone (10) until the zone of the downside (22) of described product storehouse (2), and, described the second film of drawing (20) is to cover the downside (22) of described product storehouse (16), through upset, the direction of the downside (22) of described product storehouse (16) is upwards, and basically on whole product storehouse (16).
10. method according to claim 1 is characterized in that, described the second film (20) ends in the described meshing zone (10).
11. method according to claim 1, it is characterized in that, when the upper limb of described contraction finger (28) of described the second film of transfer (20) is positioned on the upper end of described meshing zone (10), supply with the described membrane material of described the second film (20).
12. method according to claim 1, it is characterized in that, corresponding to 1 to 5 times length place of product stack layer height the membrane material of described the second film (20) is being supplied to described meshing zone (10) from the contraction finger (28) that launches the described membrane material of described the second film (20) during drawing.
13. method according to claim 12 is characterized in that, described length is corresponding to 1.5 to 3.5 times of the gas producing formation height of product storehouse.
14. method according to claim 1, it is characterized in that, under the upper limb of described contraction finger (28) of described the second film of transfer (20) is positioned directly to be arranged in minimum stack layer (5) on the described meshing zone (10) during 0.25H to 0.5H, supply with the described membrane material of described the second film (20), wherein H is the height of the minimum stack layer on the described meshing zone.
CN2008801184950A 2007-11-30 2008-11-27 Method for manufacturing a palletless packaging unit CN101903251B (en)

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EP07023274A EP2036818B1 (en) 2007-11-30 2007-11-30 Method for manufacturing a palletless packaging unit
EP07023274.9 2007-11-30
PCT/EP2008/010092 WO2009068294A1 (en) 2007-11-30 2008-11-27 Method for the production of a palletless packaging unit

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CN101903251B true CN101903251B (en) 2013-01-16

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RU2010121263A (en) 2012-01-10
DK2036818T3 (en) 2011-08-29
WO2009068294A1 (en) 2009-06-04
EP2036818B1 (en) 2011-05-25
CN101903251A (en) 2010-12-01
RU2464209C2 (en) 2012-10-20

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