WO2018055084A1 - Procédé et dispositif pour produire des particules de calage, et particules de calage ainsi produites - Google Patents

Procédé et dispositif pour produire des particules de calage, et particules de calage ainsi produites Download PDF

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Publication number
WO2018055084A1
WO2018055084A1 PCT/EP2017/074024 EP2017074024W WO2018055084A1 WO 2018055084 A1 WO2018055084 A1 WO 2018055084A1 EP 2017074024 W EP2017074024 W EP 2017074024W WO 2018055084 A1 WO2018055084 A1 WO 2018055084A1
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WO
WIPO (PCT)
Prior art keywords
strand
web
paper
preformed
transport
Prior art date
Application number
PCT/EP2017/074024
Other languages
German (de)
English (en)
Inventor
Karl Lindner
Original Assignee
Karl Lindner
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 Karl Lindner filed Critical Karl Lindner
Priority to EP17772690.8A priority Critical patent/EP3515698A1/fr
Publication of WO2018055084A1 publication Critical patent/WO2018055084A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0039—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads
    • B31D5/006—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including controlled deformation of flat material, e.g. pleating, corrugating or embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D2205/00—Multiple-step processes for making three-dimensional articles
    • B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
    • B31D2205/0011—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads including particular additional operations
    • B31D2205/0047—Feeding, guiding or shaping the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D2205/00—Multiple-step processes for making three-dimensional articles
    • B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
    • B31D2205/0011—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads including particular additional operations
    • B31D2205/0058—Cutting; Individualising the final products

Definitions

  • the invention relates to a method and an apparatus for the production of cushioning bulk material forming resilient packaging chips as well as packaging chips produced according to the method.
  • packaging chips which are also referred to as filling material or as so-called “loose-fill material" are produced from different materials
  • Such packaging chips form only a random amount of a filled filling quantity for filling cavities inside a container such as a packaging box od.
  • a container such as a packaging box od.
  • the multiplicity of packaging chips forms a good elastic cushioning padding material.
  • a type of packaging chips which is mostly used are small-sized moldings which are made of plastic material, for example made of foamed polystyrene. More environmentally compatible variants of compostable packaging chips are produced, for example, from vegetable starch. The manufacturing cost of such packaging particles is relatively high.
  • filler particles are known from the prior art, which are made of pulp, in particular of paper.
  • DE 37 18 541 A1 specifies a method in which pulp, in particular shredded waste paper, is moistened. and finally formed into particles and dried.
  • this method is expensive and less effective.
  • Another method for producing paper filler particles is DE 43 02 316 C1, in which the filler particles are made from a sheet or strip material.
  • strips of laminated paper are glued together and from the glued laminated paper are produced by cutting and deforming the Gremanteilchen.
  • the disadvantage must be handled with this method with glue.
  • the glued laminated paper must be heated to deformation, whereby the energy consumption during manufacture is adversely affected.
  • environmentally sound paper packaging chips are cut from a helically twisted paper strand.
  • a paper web is drawn through a hopper for forming and squeezed into a string in a curved tube which is rotationally passed through decreasing apertures and then driven to rotate through a rotating driven channel by means of knurled, strand-crushing rollers.
  • the paper strand must be adequately strengthened and shaped by means of the torsion. Production and device are particularly expensive.
  • packaging material which is made of paper webs
  • packaging of the present invention which cushion only in the form of bulk amount
  • relatively bulky packaging cushion and extruded bodies that form as such cushion bodies.
  • paper webs are formed into a large piece pillow or strand material.
  • it is always important that paper webs formed into strands are creased irregularly by creases or crumples and structured in such a way that as far as possible pronounced bulges, dents, corrugations and transverse structures are formed on the surface and in the interior of the strand material be made of upholstery volume.
  • document US 3,650,877 discloses methods and apparatus for making snake-like cushioning pillow cords by pulling paper webs through a hopper for crumpling and crimping, and cutting them to length by means of a cutting unit so that the cut pile strand becomes tortuous Packaging cavities can be inserted.
  • the crumpling and crumpling takes place in such a way that the upholstery strands are deformed along their length in a wave-like manner and irregularly with dents and bulges by relatively short-length, weakly shaped fold lines or only curved fold areas.
  • a winding-like structure with curves between folded surfaces is produced.
  • US 3,650,877 discloses the manufacture of a spirally or serpentine spiraling pad string having transverse embossments forming corrugations. Further upholstery strands resulting from US Pat. No. 3,650,877 have creased, irregularly wrinkled areas which are provided with a hose-like sheath formed from a second crumpled paper web which is fixed with one or two embossing seams. Tube-like shaped paper strands are also known from DE 695 05 513 T2.
  • funnels and transport rollers are used for forming the paper webs used for forming the paper webs
  • the methods and devices are such that deformed cushion or strand material having dents, elevations, bulges and transverse folds is produced, which has irregularly formed padding sections.
  • Such packaging material made of paper is not suitable for the production of bulk material forming bulk packaging chips.
  • Object of the present invention is therefore to provide a method for the production of packaging chips available, which overcomes the disadvantages of the prior art and in a particularly simple manner allows the cost-effective production of packaging chips with little technical effort.
  • This object is achieved by the method according to independent claim 1.
  • a device for the production of packaging chips is the subject of the award-claim 31. Further advantageous aspects, details and embodiments of the invention will become apparent from the dependent claims, the description and the drawings.
  • the present invention provides a process for the production of bulk-forming resilient packaging chips from at least one material web, the packaging chips forming a packaging padding only in the form of a poured filling quantity.
  • material web is a web-shaped, very thin and sheet-like material understood.
  • a paper web is used as a material web.
  • Another particular design is the use of a sheet-like film of plastic material.
  • a film may consist of metallic material or of a mixture of plastic and metal.
  • the material web may also have a coating.
  • the material web is provided with a dispenser, for example in the form of rolls wound on a roll. However, the web can also be deducted from a stationary web winding or taken from a folded web stack.
  • the material web is drawn off and transported by the delivery device by means of a transport roller unit having transport wheels interacting with one another and is pulled by a guide unit which tapers in a funnel shape between the delivery device and the transport roller unit and tapers in the transport direction with the exit opening.
  • the material web is compressed during the pulling through the guide unit to a leaving the outlet opening preformed strand of material.
  • the formed strand of material is then permanently deformed by the cooperating rollers of the transport roller unit, and the permanently deformed strand of material is finally cut by means provided in the transport direction behind the transport roller unit cutting device for producing the packaging chips.
  • the material web in the web longitudinal direction which corresponds to a feed direction or running direction of the material web and is referred to as the transport direction, is tensioned and, if the material of the material web is stretchable, also stretched. Since the transport roller unit exerts the necessary tension for pulling and pulling through the material web, the tension and optionally the elongation acts on the material web and on the formed material strand. In the feed direction behind the transport roller unit, the tensioning or stretching effect can be canceled, for example.
  • the material web is compressed in a direction transverse to the transport direction in such a way that a spatial pleating fold of the material web is produced, which is compressed by a compression of a multiplicity of strip-shaped sections extending in the direction of the material web Folding surfaces is formed, wherein the folding surfaces are folded by means extending in the longitudinal direction of the web fold lines with a resulting in the outlet opening of the guide unit density, a resilient, torsion-free, the preformed material strand bending stiffness imparting, wrapping-free strand structure with straight in straight line extending air chambers between the Forming folding surfaces, wherein the cross section of the outlet opening the strand cross-section of the preformed material strand circumferentially convex over its length ambaiger outer contour determined.
  • the result is a variety of side by side and in this way regularly extending strip-shaped, with fold lines rectilinearly delimited folding surfaces that are densely packed or packed by the funnel-shaped taper that a compaction and thus a space filling or density of the preformed strand of material is uniform.
  • this uniformity is meant that in the strand cross section, a substantially uniform air permeability or filling is formed. This property is not disturbed by dents, bulges, bulges or in the strand transverse folding.
  • the fold lines and folding surfaces are dominantly wrinkle-free and crossing-free.
  • Under strand cross-section is the cross-section to understand that is formed transversely to the strand direction at the outlet opening of the guide unit and then results in performing the method transverse to the strand direction.
  • the uniformity is also determined in such a way that
  • Strangquerites no dominant and / or sibling structural sections or areas of different embossing or fixation are formed. Instead, arise in the longitudinal direction of the strands produced with these straight running air chambers, which may be divided into straight air chamber sections, in the packaging produced straight air chambers on the chip front ends open and just exposed air chambers on the chip periphery.
  • the straight or straight-lined air chambers line up in the spatial pleating fold, openly overlapping each other, in the strand cross-section, whereby they lie slit-like on the longitudinal outer side of the preformed material strand and lie partially against each other, touching each other.
  • the continuous convex outer contour which is to be understood as an imaginary convex cylindrical outer envelope surface, is formed continuously over the strand length.
  • the material web is laid with irregular order in folds or creases formed by the straight fold lines and folded or folded irregularly to such an extent that the fold lines are generated not only intermittently but also alternately with multiple alternating left-folding and right-folding.
  • Left folding is to be understood as a folding with which a folding field folds downwards or outwards by means of the left-fold fold line from flat web level or unfolded web surface, while the right fold is determined by a folding field being fed from the same web level by means of the right-folding line . surface turns up or inwards. This means that left folding and right folding do not necessarily alternate with each other, but that, for example, between two right folding lines several left folding lines or between two left folding lines fold right folding fold arise.
  • This type of folding can also be understood as irregular pleating or as a type of constriction or shirring. Regardless of these irregularly folding fold lines, however, according to the invention an at least substantially regular or homogeneous, dominant fold line pattern, viewed in the development of a material strand section or a manufactured packaging chip, is produced.
  • This surface pattern is thus characterized by in the running direction of the web or in the longitudinal direction of the strand of material with the same orientation, side by side spaced running and pronounced shaped fold lines, fold lines can run together at an acute angle, without intersecting intersecting. Mean distances between the fold lines can be largely of the same order of magnitude, but also different in a limited distance range.
  • the compression and thus the density of the spatial pleating fold and the strand cross section of the preformed through the outlet opening of the guide unit Material strand are coordinated so that the preformed strand of material is produced rigidly, wherein he rebounding only against considerable resistance or buckle or bend the structure destructive and consequently in particular not snake or helical winds or can lay.
  • the space filling or density and the proposed elastic structure are chosen so that the resilient property of the material strand or the packaging chips produced is lost in curvature, buckling or torsion of the material strand or the strand cross-section no longer allows spring elasticity to a sufficient extent.
  • the envelope-free preformed material strand After forming the envelope-free preformed material strand, it is transported by means of the transport rollers of the transport roller unit in such a way that the preformed material strand is compressed during transport by the transport roller unit by detecting the entire strand cross-section such that after compression a permanently deformed material strand has left the transport roller unit , is elastically compressible, torsion-free and rigid with a strand structure that corresponds to the strand structure of the preformed strand of material. That is, due to the corresponding structure, the properties of spring resilience, torsional freedom, uniform density and bending stiffness and outer shape are qualitatively maintained. Quantitative properties can be different, albeit similar, but also the same.
  • the preformed material strand is compressed without crushing while maintaining regular fold lines, with a spring elasticity is fixed.
  • the permanently deformed material strand like the preformed material strand, has a circumferentially convex outer contour over the strand length, without the strand being enveloped or enclosed by material.
  • the preformed strand of material is compressed under pressure between two cooperating rollers of the transport roller unit.
  • This compression can be considered as rolling, as squeezing or in the broadest sense as pressing. It is essential in any case that during compression, the entire strand cross-section is uniformly detected, wherein qualitative properties of the preformed material strand after compression are corresponding or intensified properties of the permanently deformed material strand.
  • the strand shape of the permanently deformed material strand be different.
  • the inventively produced and structured, permanently deformed material strand can be cut by means of the cutting device into a multiplicity of uniformly short-length, cleanly and formably detachable packaging chips.
  • an advantageous measure is also that the material web in friction resistance minimizing sliding contact with a funnel-shaped tapering inner wall of the guide unit is pulled by the latter. The sliding contact can be facilitated by an adapted to the nature of the material web and the transport, the funnel-like taper determining inclination of the inner wall.
  • an expedient measure can also be that the funnel-shaped taper of the guide unit decreases towards the outlet opening of the guide unit, in particular in a lily shape.
  • the material web may expediently be kept taut when pulled by the guide unit by means of a transport control, in order to ensure the quality of the strand production to a particular degree.
  • the material web has a width in a range of 200 mm to 700 mm.
  • a width in a range of 400 mm to 600 mm is preferred, particularly preferably in a range of 450 mm to 550 mm and in particular preferably of about 500 mm.
  • smaller web widths are preferred, which are preferably in the range of 200 mm to 300 mm.
  • the material web is compressed during the advance by the guide unit such that an at least substantially uniform or average diameter of the formed strand of material at exit from the guide unit at an outlet opening in a range of 8 mm to 15 mm, preferably is in a range of 10 mm to 13 mm, and more preferably about 12 mm.
  • Preference is cut from the permanently deformed strand of material by means of the cutter packaging chips with an average length of about 50 mm.
  • the permanently deformed material strand can be guided, held and / or actively moved in the transport direction to improve the cutting accuracy or efficiency in the region of the cutting device.
  • the size and structure of the packaging chips can be produced such that the density of the filling quantity is at least 50 ⁇ 10 3 chips / m 3 , preferably at least 60 ⁇ 10 3 chips / m 3 and particularly preferably at least 70 ⁇ 10 3 chips / m 3 , preferably with a length in the range of 40 mm to 60 mm.
  • the method according to the invention can be carried out with particular advantages for producing paper chips.
  • a paper web is used, wherein the paper web is compressed during transport through the guide unit to a preformed strand of material forming preformed paper strand and wherein from the preformed paper strand a permanently deformed strand of material forming deformed paper strand is formed, which is used to produce a variety of cushioning Filling forming paper packaging chips is cut.
  • Environmentally friendly paper packaging chips can be produced in the simplest way.
  • the paper web can be formed by any suitable paper for the particular use, in particular for the following procedural designs. It must always be ensured when selecting the paper that it has the necessary rigidity, such that the deformed paper strand and thus also the packaging chips produced therefrom have sufficient elasticity and shape retention.
  • the paper advantageously has the lowest possible weight as well as the smallest possible thickness.
  • the paper of the paper web has a basis weight in a range of 20 g / m 2 to 100 g / m 2 and particularly preferably in a range of 40 g / m 2 to 60 g / m 2 .
  • the paper web may also be formed by a packaging paper, in particular tempered paper. It is also within the scope of the invention that the pleating fold for producing paper packaging chips is produced from a plurality of paper webs, preferably from two paper webs of the same web widths, which are arranged and guided in such a way that they converge congruently in the guide unit.
  • each paper web then forms a paper ply of a multilayer, preferably two-ply composite web which is pleated in the guide unit.
  • the paper packaging chips can be produced particularly advantageously in such a way that those of the folding surfaces of the paper web which come into contact with the guide unit during the production of the pleating fold in the transport roller unit and in the paper strands formed are in line and surface contact only without a firm connection touching, wherein at the outer periphery of the paper strands formed long-extending channel-like air chambers are open.
  • the loose contact does not allow fabric connections and / or embossed-stamped connections, wherein, however, fold surfaces or walls of the air chambers advantageously engage with each other and can thereby catch each other.
  • a paper web with a paper structure is used as the material web, which causes the fold lines of the spatial pleating fold to be produced as a sharp-edged material elastic recovery force of the paper material forming paper fold edges, and that this pleat fold is intensified by the compression in the transport roll unit.
  • the cross-section of the outlet opening of the guide unit with a preferably minimum size can advantageously be selected such that, together with a compression which also sets minimum spring elasticity, by means of the transport roller unit, the permanently deformed paper strand is formed with a strand cross-section , which is in shape and structure equal to the strand cross-section of the preformed paper strand.
  • Compression can be carried out particularly advantageously by means of the transport roller unit in such a way that the preformed paper strand is temporarily compressed by means of the transport roller unit to a densest, ie substantially air-free, gapless structure which sets and fixes the spring elasticity of the deformed paper strand.
  • a particularly preferred measure is that the paper web, with which the guide unit is fed, is such that it extends along the transversal path. port direction or the track course easier than transverse to the transport direction with fold lines.
  • the inventive method for producing the paper-packaging chips can be particularly advantageous in that the spatial pleating fold of the paper web is generated such that the fold lines of the emerged from the transport roller unit deformed paper strand mean transverse distances, viewed in flat settlement of a cut paper-packaging chips, in Range of 2 mm to 10 mm, preferably in the range of 2 mm to 7 mm.
  • the paper packaging chips are manufactured with a specific chip weight in the range of 25 kg / m 3 to 40 kg / m 3 , preferably in the range of 20 kg / m 3 to 30 kg / m 3 .
  • the pleating fold of the paper web can be produced with 15 to 50 fold lines per 100 mm web width.
  • the permanently deformed paper strand assumes over its length the circumferentially convex outer contour with the imaginary envelope surface on which outer fold lines or fold surfaces come to lie in the strand cross section, so that the outer circumference is openly bounded by the straight air chambers extending in the longitudinal direction of the line.
  • the outlet opening of the guide unit essentially determines the convex-surface outer contour or strand shape, which are cylindrical and advantageously have a substantially circular cylindrical contour.
  • the proportion of air depends in particular on the stiffness of the web paper used and thus on the fact that a fiber composite fraction after a preferably maximum compression by means of the transport roller unit in contrast to the essential part of the damaged fiber structure has the tendency to form back to the original position, said the spring elasticity is determined by the pronounced sharp-edged crease lines. That is, the compression by means of the transport roller unit is tuned and selected to the fiber composite property of the paper used and the degree of damage by the pleating process. Accordingly, the volume fraction of air in the deformation depends on the pressure exerted by the cooperating rollers of the transport roller unit. The proportion of air in the deformed paper strand, and thus in the packaging chips, has an effect on the weight per unit volume of a filling quantity of the packaging chips and also on the damping properties of the filling quantity formed by the multiplicity of packaging chips.
  • the paper web is compressed or gathered at the time of collapsing into the paper strand, namely, during the spatial pleating fold, it is irregularly folded by causing the fold lines to be irregularly formed with left folds and right folds.
  • individual sections or fold sections, namely folding surfaces regularly run next to one another due to the compression avoided in the strand running direction so that, although a paper web is formed to form packaging material, cuddling and crumpling with intersecting folds is deliberately counteracted .
  • the wrapping-free packing of the plurality of Textilfalt vom with their kink edges creates the packing structure in which the individual sections or fold sections of the paper web in spatial proximity to each other or in mutual adhesive or fixation-free, loose contact, so that between the aligned in the strand direction Folding surfaces and fold lines which form long extending straight-line air chambers, which thus form air-containing gaps between the sections or fold sections and make up the volume fraction air or the air portion of the paper strand.
  • the air chambers go in the strand cross
  • the paper strand is deformed such that the deformed paper strand has a predetermined volume fraction of air, wherein the volume fraction is preferably at least 50%, more preferably at least 70% and most preferably at least 90%.
  • a paper web can be used which, preferably with a basis weight in the range of 40 g / m 2 , has a width in a range of 200 mm to 300 mm, preferably of approximately 250 mm.
  • An alternative implementation of the method according to the invention uses as a material web a film web, wherein the film web is compressed to form the preformed strand of material preformed film strand and wherein from the preformed film strand a permanently deformed material strand forming deformed film strand is formed.
  • the permanent deformation can be achieved particularly advantageous solely due to the film properties.
  • the permanent deformation can also be achieved or reinforced, for example, by a slight heating of the material during the compression or pressing.
  • the permanent deformation of the film strand is due to the fact that the film web adheres to itself due to their adhesion properties when their surface comes into mutual contact.
  • the surface of the film web gets in contact at numerous, irregularly distributed contact points and can therefore adhere to each other.
  • the film web interacts with its surface virtually with itself and thus forms permanent contact, wherein the internal adhering or gluing does not occur over the entire surface over the entire surface and not evenly over the entire surface, but punctually and disorderly. Because of this punctiform and disorderly adhering or gluing air inclusions are included in the formed film strand.
  • the air inclusions can also be understood as air chambers, which are sections of the air chambers formed with the spatial pleating fold, the latter, forming the sections, more or less interrupted by the point contact points.
  • the sticking can be enhanced by a stretching effect during the feed.
  • the formed film strand to form air pockets or while maintaining the air pockets or air bubbles. Chambers permanently deformed, since the packaging chips through the air chambers have a particular low and therefore favorable weight per unit volume. Furthermore, due to the air inclusions, it is particularly advantageous to obtain good elasticity properties as well as a large restoring force and a resilient action of the packaging chips.
  • the formation or retention of the air pockets in the deformed film strand can be achieved, for example, by adjusting the pressure effect of the rolls accordingly and by not exerting too much pressure when deforming the rolls.
  • a stretch film is used as the film web, which is referred to herein as stretch film.
  • the stretch film particularly preferably consists of a polymer, in particular of a thermoplastic plastic, for example of a polyethylene.
  • the stretch film is most preferably a so-called machine stretch film of low density polyethylene, namely a low density polyethylene (LDPE), preferably a linear low density polyethylene (LLDPE).
  • LDPE low density polyethylene
  • LLDPE linear low density polyethylene
  • the stretch film advantageously has a material thickness in a range of 12 ⁇ to 35 ⁇ and preferably in a range of 15 ⁇ to 25 ⁇ .
  • the stretch film has a material thickness in a range of 17 ⁇ to 23 ⁇ and particularly preferably a material thickness of about 20 ⁇ .
  • the stretch film may be transparent or colored.
  • a particular advantage of using a stretch film is that it is an elastic film that can be stretched extremely, without the risk of the film tearing. This has a particularly positive effect on the reliability of the method, since the unrolling or removal of the film web from the roll by means of the transport roller unit can also be carried out at high speeds, wherein the speed is preferably infinitely adjustable or adjustable.
  • a stretch film on an elastic restoring force if it is stretched within its elastic range.
  • stretch films still adhere well to one another even after being subjected to high elongation, so that they are particularly suitable for use in the present process.
  • the packaging chips produced from a stretch film can also be understood as stretch chips.
  • the present invention also includes an apparatus for producing packaging chips according to the method of the invention.
  • the device for the production of bulk-forming resilient packaging chips is set up, which form a packaging padding only in the form of a poured filling.
  • the device comprises at least one dispensing device for dispensing a material web, at least one transport roller unit for removing the material web from the dispensing device and for transporting the material web in the transport direction, at least one guide unit provided between the dispensing device and the transport roller unit for compressing the material web to the material strand to be preformed an inner wall which tapers in a funnel shape in the direction of transport to an exit opening of the guide unit, and at least one cutting device arranged downstream of the transport roller unit in the transport direction.
  • the funnel-shaped tapered inner wall and the outlet opening are designed such that the formation of the pleating fold according to the method, thereby determining the shape, size and elastic property of the cross-sectional structure of the preformed material strand, the web in the guide unit only transversely to the transport direction simply folding and thus crumpled and crushable is crushable, wherein the transport unit is formed to form the permanently deformable Materalstrangs with at least two cooperating transport rollers, which receive the preformed strand of material between him and transport that he intensifying in its entire cross-sectional width, the pleating and the elastic property adjusting and fixing , crush-free, uniform and stampable is compressible.
  • the transport roller unit fulfills several functions in carrying out the method.
  • the rollers of the transport roller unit thus serve, on the one hand, to advance and transport the material web or the material strand and, on the other hand, simultaneously to permanently deform the material strand.
  • the transport roller unit is set up such that the sections or the fold sections which are the folding surfaces of the pleating fold form a free or loose contact at least in chamber sections of the rectilinearly long extending air chambers when compressing, wherein in the case of compression of a preformed film strand by film adhesion or -klebrtechnik a plurality of the chamber sections forming contact points are generated bar.
  • the guide unit is designed as a funnel, which forms the funnel-shaped inner wall which tapers in a funnel shape towards the outlet opening and which is designed to be circumferentially closed, as a guide space elongated in the transport direction for producing the pleating fold.
  • the inner wall along its taper is provided with a sliding surface which forms a sliding guide for avoiding dragging through the material web which is to be compressed only in the direction transverse to the transport direction and which produces the pleating fold.
  • the pleating fold is particularly assisted by the fact that the inner wall tapers towards the outlet opening, in this opening, decreasing, in particular lily-shaped.
  • the guide unit is formed as a funnel with the tapered inner wall, which tapers circumferentially, and with the outlet opening.
  • the outlet opening may be part of a funnel-mouth part, which is an exchangeable funnel component for selecting the shape and size of the outlet opening.
  • An outlet opening of a funnel forming the guide unit advantageously has an opening width in a range of 8 mm to 15 mm, preferably in a range of 10 mm to 13 mm and particularly preferably of around 12 mm.
  • a preferred embodiment consists in that the device is set up with a controllable drive device forming a transport drive of the transport roller unit, which is adjustable in such a way that the transport speed of the preformed material strand and the transport speed of the guide unit running material track and be brought in accordance with deviation. This is done to optimize the pleating fold.
  • the guide unit expediently has an outlet opening, which has a group of circular, circular and oval shape of the outlet openings is selected.
  • the cooperating rollers of the transport roller unit are formed with special surfaces that attack for transport and compression only on the outer surface of the preformed strand of material without penetrating the outer surface.
  • the cooperating rollers of the transport roller unit are formed as rubber rollers, which in particular have a rubberized mantle surface.
  • the transport rollers of a pair of drawing rollers, of which only one roller must be urgently driven have at least substantially flat roller surfaces free of projecting elements.
  • the roll surfaces of one or both draw rolls may advantageously also be of concave design in the running cross-section in order to give the circumferentially convex outer contour of the permanently deformed material strand a shaping which emphasizes the round shape.
  • Flanks of concave drive rollers can interlock toothed to additionally support the convex outer contour.
  • the device may have a foot switch for starting, as well as alternatively or additively an emergency stop switch.
  • the device can also be designed for continuous adjustment of the speed and / or have a soft start.
  • the invention also relates to packaging chips made by the described method.
  • the packaging chips are characterized in that they are made of a stretch film or paper.
  • Special advantages of the packaging chips produced from a stretch film, also referred to as stretch chips, lie in the fact that the stretch chips are particularly grippy and are easily dosed and resilient by the enclosed air chambers.
  • packaged goods can be safely packaged with the stretch chips, since the stretch chips ensure good fixation due to their adhering or "adhesive" material properties.
  • Packaging chips made from a paper web are also light can be metered and act as springy by their proportion of air in combination with the rigidity of the paper material, so that secure packaging of packaged goods is achieved even with paper chips.Particularly advantageous, such paper chips represent an environmentally friendly variant of packaging chips.
  • the packaging chips have a length in a range of 30 mm to 70 mm, preferably in a range of 40 mm to 60 mm and more preferably of about 50 mm and a width in a range of 10 mm to 20 mm, preferably in a range of 12 mm to 18 mm and more preferably of about 15 mm.
  • Fig. 1 roughly schematically shows an embodiment of the device according to the invention
  • FIG. 2 shows a section of the device of FIG. 1, FIG.
  • Fig. 3 in axonometric view of a paper web produced in a plurality of packaging chip
  • Fig. 4 shows the settlement of a packaging chip made of paper.
  • FIG. 1 shows, roughly schematically illustrated, an embodiment of the device 1 according to the invention for producing packaging chips 20. Individual method steps of the present method for producing packaging chips 20 are denoted by Roman numerals and indicated accordingly in FIG.
  • the device 1 which extends along a main axis HA, comprises a delivery device 40 with a holding device 4 for rotatably supporting a roller 3 of a roll of material provided and wound on the roll 3 material web 2.
  • the roller 3 is rotatably supported by the holding device 4 such in that an axis of rotation DA of the roller 3 is substantially perpendicular to the main axis HA of the device 1.
  • the device 1 further comprises a transport roller unit 5, which in the present example has two cooperating rollers 5a, 5b in the form of rubber rollers.
  • a rolling or pulling off the mate- rialbahn 2 of the roller 3 is effected.
  • a transport direction R of the material web 2 which may also be referred to as advancing or running direction, runs in the direction of the main axis HA of the device 1. The material web 2 is thus moved in the transport direction R along its length.
  • a funnel-shaped tapered guide unit 6 is arranged between the transport roller unit 5 and the holding device 4 and thus between the transport roller unit 5 and the roller 3.
  • the material web 2 is pulled by the rollers 5a, 5b of the transport roller unit 5 through the guide unit 6, wherein the material web 2 during the advance by the guide unit 6 in particular due to their funnel shape is compressed to a preformed material strand 2 '.
  • the formation of the preformed material strand 2 ' is denoted by II and indicated in FIG. 1 in the region of the guide unit 6 designed as a funnel.
  • the preformed material strand 2 'is formed by the material web 2 is forced due to the funnel-shaped tapered guide unit 6 in a narrower, narrower shape with reduced width and thus folded irregularly during feeding or when moving through the hopper, placed in irregular folds or crimped or crunched or gathered.
  • This structure achieved according to the invention will be described and described in more detail below with reference to FIGS. 3 and 4.
  • the preformed material strand 2 runs out of the guide unit 6 on an outlet 6.1 facing the rollers 5a, 5b.
  • the outlet opening 6.1 of the guide unit 6 is arranged in the transport direction R in front of the rollers 5a, 5b and adjacent thereto.
  • the preformed material strand 2 ' is compressed by the two interacting rolls 5a, 5b and thereby permanently deformed, whereby a deformed material strand 2 ", in the broadest sense a compressed, deformed material strand 2" is formed.
  • the compression and deformation of the material strand 2 'and thus the formation of the deformed material strand 2 " is denoted by III and indicated in the region of the rolls 5a, 5b in Figure 1.
  • both surfaces of the rolls 5a, 5b are the preformed material strand 2
  • the roller surfaces are formed only for surface pressing and slip-free entrainment of the preformed material strand 2 ', that is to say that the rollers 5a, 5b free the preformed material strand 2' from the surface of the preformed material strand 2 '.
  • the surface pressure is set up in such a way that no singular compaction or bulging or otherwise differentially different cross-sectional areas arise on the circumference and within the compressed material strand 2 ', the material strand 2' b between 2 "also remains torsion-free and wrapping-free.
  • the transport roller unit 5, in particular the rollers 5a, 5b, in the present method for producing packaging chips 20 not only convey and pull off the material web 2 from the roll 3, but also the transport or advancement of the material web 2 as well as the compression and deformation of the preformed material strand 2 '.
  • the material web 2 and the material strand 2 ' are therefore under a certain tensile stress at least over the entire section between the roll 3 and the rolls 5a, 5b and are advantageously stretched in the event that a stretchable material web 2, such as a stretch film web, is used.
  • the apparatus 1 further comprises a cutting device 7 arranged downstream of or downstream of the transport roller unit 5 with a rotating cutting mechanism 7a, by means of which the deformed material strand 2 "is cut or cut off to cut off a multiplicity of packaging chips having a predetermined particle length. is lengthened and finally the packaging chips 20 are released.
  • the rotating cutting mechanism 7a comprises two blades and rotates about an axis of rotation substantially perpendicular to the main axis HA and perpendicular to the transport direction R, as indicated by the arrow in FIG.
  • the cutting or cutting to length of the deformed material strand 2 "and thus the formation of the packaging chips 20 is denoted by IV and indicated in the region of the cutting device 7 in FIG.
  • the deformed material strand 2 for example, additionally performed for cutting, be held or driven in the transport direction.
  • step I is the formation of a preformed film strand forming the preformed material strand 2 ', the formation of the preformed film strand being accomplished by pulling the film web through the guide unit 6 and compressing the film web to produce the spatial pleating fold.
  • Step III represents the compression and permanent deformation of the film strand into a permanently deformed film strand forming the permanently deformed material strand 2 ".
  • the cutting of the deformed film strand in packaging chips 20 forms step IV of the process.
  • FIG. 2 shows in more detail the formation of the preformed film strand (step II of the method) from the film web by means of a section of FIG.
  • the wound on the roll 3 film web which is used to produce the packaging chips 20, has a predetermined width b.
  • the film web is already forced due to the opening width of the inlet opening 6.2 in a narrower, narrower shape with a reduced width b1.
  • This reduction of the width or this constriction or narrowing takes place by irregular or unordered folding, folding or folding or by pleating, shirring or necking.
  • Folds, indentations, impacts and the like that arise in this way and that can occur outside of the funnel 6 are shown by dashed lines and run essentially in the longitudinal direction LR of the film web. Subsequently, however, the fold lines 201, 202 of a regular fold line pattern 204, as illustrated with reference to FIG. 4, arise due to the irregular folding inside the funnel 6.
  • the film web is increasingly compressed in the guide unit 6 only in the direction Q transverse to the transport direction R and thus under targeted prevention of compression in the transport direction R.
  • the preformed film strand is formed by compressing the film web, the flat, sheet-like and flat shape of the film web is converted into a rod-like or strand-like form.
  • the preformed film strand has a
  • Diameter d which is smaller by a multiple than the width b of the film web. 2
  • the film web used is a machine stretch film which has a width b of approximately 500 mm and a material thickness of approximately 20 ⁇ m.
  • the transparent machine stretch film consists of a low-density polyethylene, in particular of a so-called linear low density polyethylene (LLDPE) and has a good adhesion, so that lying on each other layers of the film web still adhere well even after strong stretching.
  • LLDPE linear low density polyethylene
  • this may be achieved by sticky polymers provided on one surface side of the machine stretch film or by mixing migrating tacky, highly viscous polyisobutylene into the film surface layer during manufacture.
  • the film strand at the exit from the guide unit 6 at the outlet opening 6.1 has a diameter d of about 12 mm.
  • very fine pleating is achieved with predominantly uniform transverse distances, in particular in the range from 0.5 mm to 2 mm.
  • the preformed film strand is finally compressed by the rollers 5a, 5b, not shown in FIG. 2, and thereby permanently deformed.
  • the permanent deformation of the permanently deformed film strand is primarily due to the fact that the machine stretch film adheres to itself due to its adhesion properties when their surface comes into contact with each other.
  • the surface of the machine stretch film at numerous, irregularly distributed contact points in mutual contact and therefore can adhere to each other.
  • the machine stretch film virtually interacts with itself on its surface, forming lasting contact.
  • the internal adhering or sticking together of the machine stretch film does not occur over the entire surface over the entire surface and not evenly over the entire surface but punctually and disorderly.
  • air inclusions are advantageously formed in the permanently deformed film strand, which determine the structure and property of the packaging chips 20, which in turn are produced by cutting the permanently deformed film strand.
  • the packaging chips 20 receive a certain specific weight per unit volume with considerable reduction in comparison with, for example, a strand wound from a film web and, on the other hand, excellent elasticity properties are achieved in a simple manner.
  • the finished packaging chips 20 have an average length of 50 mm and an average width of 15 mm.
  • packaging chips 20 made of machine stretch film also have the advantage that the finished packaging chips 20 also have certain adhesion properties on their surface so that they can be arranged on the surface of a packaged item to be packaged and thus protect this packaged item particularly effectively. As well Due to the adhesion properties, the packaging chips 20 deposit between the packaging wall and the packaged goods without sinking in accordance with gravity.
  • step I the removal of the paper web 2 from the roll 3 can be defined.
  • step II is the formation of a preformed paper strand forming the preformed material strand 2 ', the formation of the preformed paper strand being effected by pulling the paper web through the guide unit 6 and the concomitant compression of the paper web.
  • step III represents the compression and permanent deformation of the preformed paper strand into a permanently deformed paper strand.
  • the cutting of the permanently deformed paper strand into packaging chips 20 forms step IV of the process.
  • a paper web is used which, when pulled through the funnel of the guide unit 6, forming the spatial pleat fold, produces the fold lines as a pronounced sharp-edged paper bending edge which forms against material-elastic restoring force of the paper material, this pleating fold being achieved by the compression in the transport roller unit 5 is intensified.
  • a paper web is preferably used for this Plissierfaltung whose paper can be easier to bend along the transport direction than transverse to the transport direction with fold lines.
  • the roll paper should have on both sides a sliding surface, wherein it has been steamed, for example, with lubricant such as silicone.
  • the funnel should have a funnel-shaped inner wall 6.3 that tapers in a funnel-shaped manner towards the outlet opening 6.1, which rotates closed and forms an elongate guide space in the transporting direction R for producing the pleating fold.
  • the outlet 6.1 should have a circular shape with a diameter d, which is selected in the range of 10 mm to 13 mm.
  • the pleating fold is to be carried out and set up so that the size of the outlet opening 6.1 is selected such that, together with a minimum spring elasticity-adjusting compression by means of the transport roller unit 5, a permanently deformed material strand 2 "forming permanently deformed paper strand 20" is effected. is formed with a strand cross-section which is at least substantially equal in shape and structure to the strand cross-section of a preformed paper strand forming the preformed material strand 2 '.
  • the paper web is guided and pulled by the guide unit 6 in such a way that the transport speed of the paper web entering the guide unit 6 and the transport speed of the preformed paper strand leaving the guide unit 6 coincide.
  • the preformed paper strand is replaced by a continuous strand cylindrical, circumferentially convex outer contour, which is to be understood as an imaginary convex-cylindrical envelope surface.
  • the paper web is drawn in friction resistance minimizing sliding contact with the funnel-shaped taper forming Innwandung 6.3 of the guide unit 6 by the latter.
  • the inner wall 6.3 should be provided along its taper with a sliding surface, which forms a sliding guide for drag-avoiding pulling through the paper web to be pleated.
  • the paper packaging chip 20.1 is cut off in multiplicity from the permanently deformed paper strand 20 "by means of the cutting device 7.
  • the inner and outer structure of the paper packaging chip 20.1 shown in Fig. 3 therefore simultaneously represents the inner and outer structure of the permanently deformed paper strand 20". after the compression in the transport roller unit 5.
  • the inner structure and the outer structure of the permanently deformed paper strand 20 "and the paper packaging chip 20.1, respectively, correspond to the internal structure and external structure of the preformed preformed paper strand emerging from the exit opening 6.1.
  • the permanently deformed paper strand 20 "has over its length a cylindrical, circumferentially convex outer contour 205, which is an imaginary convex-cylindrical enveloping surface is to be understood and represented in the strand cross-section or on an end face of the paper packaging chip 20.1 with an imaginary, substantially circular-cylindrical, dash-dotted contour line.
  • the pleating fold has been produced, which is produced by a compression and thus a packing of a multiplicity of strip-shaped folding surfaces 203 which run along the paper web in a regular manner next to one another.
  • FIG. 4 shows the paper packaging chip 20.1 in flat-lying development.
  • the folding structure 203 of the folding surfaces 203 according to FIG. 3 results from the pleats in the guide unit 6 running exclusively or at least substantially regularly, ie predominantly in the longitudinal direction of the preformed paper strand or the permanently deformed paper strand 20 ".
  • the fold lines 201, 202 are designed in such a way that they extend in a straight line over the length of a paper packaging chip 20. 1 having small transverse distances q in relation to the width b of the paper web.
  • the pleating fold forms the fold pattern 204 with the fold lines 202, 203, which are regular in the line direction, and whose different and also corresponding average transverse distances q are in the range from 2 mm to 7 mm.
  • about 30 fold lines per 100 mm web width belong to the pleating fold of the paper web.
  • the web width b should be about 250 mm in the embodiment when using a recycled paper with a basis weight of about 40 g / cm 2 .
  • the pleating fold located within the circular envelope surface is formed by a system of straight air chambers 206 which extend exclusively in the longitudinal direction of the permanently deformed paper strand 20 "or in the length of the paper packaging chip 20.1
  • Channel-like air chambers are, as previously mentioned, formed by the open juxtaposition of longitudinal spaces with co-extending longitudinal edges which are acute at fold lines 201, 202.
  • a plurality of acute-angled folded surfaces more or less intermesh with the acute-angled surface transitions or sections This can be seen, for example, in cross-sectional areas 207 in FIG. 3. In these cross-sectional areas, an at least partial overlap results in a structure of the air chamber which is more or less hooked or has latching engagements, and thus is particularly firm and cohesive n 206.
  • the air chambers 206 are open to the outside, wherein folding sections 203 also come to lie closely or flat against one another.
  • the described inner and outer structure of the paper strands or of the paper packaging chip 20.1 is due to the fact that the fold lines 201, 202 are left-folding or right-folding. In sections, left-folding and right-folding lines 201, 202 alternate and form the pronounced acute-angled air chambers 206. In these sections, an accordion-like zig-zag fold develops.
  • the paper packaging chips 20.1 produced have a considerable air volume fraction, which may even amount to at least ninety percent, the paper strands produced according to the invention without strand twist and without transverse folds being particularly stable, dimensionally stable and spring-elastic, even with the smallest diameters in particular in a range of preferably 8 mm to 15 mm.

Landscapes

  • Making Paper Articles (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour produire des particules de calage (20, 20.1) formant un produit en vrac, à partir d'au moins une bande de matériau (2), par ex. une bande de papier ou un film continu. La bande de matériau (2) est tirée au moyen d'un ensemble de cylindres de transport (5) dans la direction de transport (R) à travers une unité de guidage (6) s'amincissant en entonnoir pour générer un tronçon de matériau (2') préformé, et comprimée uniquement dans la direction (Q) perpendiculaire à la direction de transport (R), de manière à générer une structure plissée tridimensionnelle constituée par compression d'une pluralité de surfaces de pliage (203) en forme de bande formées entre des lignes de pliage (201, 202) et s'étendant les unes à côté des autres dans la direction de la bande de matériau (2). Le tronçon de matériau (2') préformé qui comporte des chambres à air (206) rectilignes s'étendant dans la direction du tronçon et présente un contour extérieur à surfaces convexes est comprimé au moyen de cylindres de transport (5a, 5b) coopérant ensemble de l'ensemble de cylindres de transport (5) sur la totalité de sa section transversale, de manière à obtenir un tronçon de matériau (2') de forme inchangée comprimable élastiquement, exempt de torsion et inflexible et présentant une structure de tronçon qui correspond à la structure du tronçon de matériau (2') préformé. Le tronçon de matériau qui présente une forme inchangée est coupé pour produire une pluralité de particules de calage (20) formant des volumes de remplissage à effet rembourrant.
PCT/EP2017/074024 2016-09-23 2017-09-22 Procédé et dispositif pour produire des particules de calage, et particules de calage ainsi produites WO2018055084A1 (fr)

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DE102017105893 2017-03-20

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CN110874893A (zh) * 2019-12-02 2020-03-10 广州富港万嘉智能科技有限公司 一种快捷换馅的出馅机
CN111545159A (zh) * 2020-05-29 2020-08-18 北京化工大学 一种高效传质分离散装填料结构

Families Citing this family (1)

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DE202022104412U1 (de) 2022-08-03 2022-08-09 Karl Lindner Vorrichtung zur Herstellung von Verpackungschips

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WO2016198944A1 (fr) 2015-06-12 2016-12-15 Papernuts, Corp Appareil pour produire un fardage

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US2786399A (en) * 1952-03-06 1957-03-26 Veyne V Mason Formation of crumpled sheet material filter elements and the like
US2882802A (en) 1956-10-29 1959-04-21 Fox Paper Company Crumpling device
US3650877A (en) 1969-10-06 1972-03-21 Arpax Co Cushioning dunnage product
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DE4302316C1 (de) 1993-01-28 1994-05-19 Jun Karl Lindner Herstellen von Füllmaterialteilchen aus Zellulosematerial, insbesondere aus Papier oder Pappe
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CN110874890A (zh) * 2019-12-02 2020-03-10 广州富港万嘉智能科技有限公司 一种减少挤压损坏的出馅机
CN110874893A (zh) * 2019-12-02 2020-03-10 广州富港万嘉智能科技有限公司 一种快捷换馅的出馅机
CN111545159A (zh) * 2020-05-29 2020-08-18 北京化工大学 一种高效传质分离散装填料结构
CN111545159B (zh) * 2020-05-29 2021-05-04 北京化工大学 一种高效传质分离散装填料结构

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