EP0910542B1 - Packaging a strip of material - Google Patents

Packaging a strip of material Download PDF

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Publication number
EP0910542B1
EP0910542B1 EP98929172A EP98929172A EP0910542B1 EP 0910542 B1 EP0910542 B1 EP 0910542B1 EP 98929172 A EP98929172 A EP 98929172A EP 98929172 A EP98929172 A EP 98929172A EP 0910542 B1 EP0910542 B1 EP 0910542B1
Authority
EP
European Patent Office
Prior art keywords
strip
stack
stacks
package
connecting portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98929172A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0910542A1 (en
Inventor
Lawrence O'connor
Darrell Van Mol
Mark B. Davidson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Georgia Pacific Nonwovens LLC
Original Assignee
Stac Pac Technologies Inc
Stac Pac Tech Inc
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
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27578033&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0910542(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US08/878,826 external-priority patent/US6035608A/en
Priority claimed from US08/948,256 external-priority patent/US5966905A/en
Priority claimed from US08/975,037 external-priority patent/US6067775A/en
Priority claimed from US09/024,890 external-priority patent/US6009689A/en
Priority claimed from US09/064,744 external-priority patent/US6176068B1/en
Priority claimed from US09/081,826 external-priority patent/US5987851A/en
Application filed by Stac Pac Technologies Inc, Stac Pac Tech Inc filed Critical Stac Pac Technologies Inc
Publication of EP0910542A1 publication Critical patent/EP0910542A1/en
Publication of EP0910542B1 publication Critical patent/EP0910542B1/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/06—Folding webs
    • B65H45/10—Folding webs transversely
    • B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
    • B65H45/1015—Folding webs provided with predefined fold lines; Refolding prefolded webs, e.g. fanfolded continuous forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/06—Folding webs
    • B65H45/10—Folding webs transversely
    • B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/08—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/67—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H21/00—Apparatus for splicing webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/421—Forming a pile
    • B65H2301/4216—Forming a pile of web folded in zig-zag form
    • B65H2301/42162—Juxtaposing several piles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/462—Form of splice
    • B65H2301/4622—Abutting article or web portions, i.e. edge to edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/112—Section geometry
    • B65H2701/1123—Folded article or web
    • B65H2701/11231—Fan-folded material or zig-zag or leporello
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/18—Form of handled article or web
    • B65H2701/182—Piled package
    • B65H2701/1824—Web material folded in zig-zag form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/18—Form of handled article or web
    • B65H2701/182—Piled package
    • B65H2701/1824—Web material folded in zig-zag form
    • B65H2701/18242—Juxtaposed sets

Definitions

  • This invention relates to a package of a strip of material and to a method for forming a package of a strip of material.
  • continuous strip material is wound into a roll which can be a single spiral, known as a pad or pancake, or can be a traverse wound package where the strip traverses helically back and forth. Both of these constructions are limited in the length of material and require on the fly splicing for continuous operation. Also the package construction can damage the strip due to tension changes through the diameter of the package.
  • Previously packages of a continuous strip of material have been formed using a technique known as "festooning" in which the strip is folded back and forth to lay a series of strip portions back and forth with each portion being folded relative to the next about a line transverse to the strip.
  • the technique of festooning has been available for many years and is used in packaging many different types of material but particularly material of a fibrous nature such as fabric, non-woven strips and the like.
  • the strip is conventionally guided into a receptacle such as a cardboard box while a first reciprocating movement causes portions of the strip to be laid across the receptacle and folded back and forth and a second reciprocating movement causes the positions of the portions to be traversed relative to the receptacle transversely to the portions.
  • the receptacle comprises a rigid rectangular container at least partly of cardboard having a base and four upstanding sides.
  • the purpose of the festooning method is for packaging the strip for supply to a machine using the strip.
  • Some users prefer the festooned package relative to a wound package of this type of material.
  • the festooned package contains a much greater length of material than a spirally wound pad.
  • the festooned package can simply be located adjacent the machine without the necessity for any driven unwinding stand.
  • both the leading end and the tail end of the package are available at the top of the package so that a series of the packages can be connected lead to tail to act as an extended supply.
  • Festooned packages are formed in a stiff container or box to properly enclose and contain the material and within which the material is stored during transportation for maintaining the material against compression and distortion due to the transfer of loads from surrounding packages.
  • the cardboard container thus provides support for other similar stacked containers and prevents the transfer of loads from the stacked packages from causing excessive compression of packages at the bottom of a stack.
  • the cardboard containers and the package structures used in the conventional arrangement however have a number of problems.
  • the container must be either recycled with the necessity of shipping the cardboard containers in the return direction to the supplier from the end user or they must be discarded, both at considerable expense.
  • the cardboard containers simply receive the material without significant compression so that there is wastage of space within the container due to the packaging of air with the material.
  • the conventional package structure does not minimize the amount of air spaces formed in the structure. The transportation costs of the material therefore are significantly increased by the large volume of the material which provides a density which is significantly below the optimum for most efficient transport.
  • a package of strip material comprising:
  • a method of forming a package of strip material comprising:
  • Figure 1 is a schematic isometric view of a package of a strip according to the present invention, the package including four stacks of the strip and being shown prior to connection of the strip from each stack to the next, prior to compression of the stacks and with the flexible packaging material omitted for convenience of illustration.
  • Figure 2 is a schematic isometric view of the package of figure 1 with the connections between the stacks made and the package compressed but with the flexible packaging material omitted for convenience of illustration.
  • Figure 3 is a front elevational view of the package of Figures 1 and 2 showing the package with the connections partly made prior to compression. This figure includes spaces between the stacks but these are merely for convenience of illustration and do not exist in practise.
  • Figure 4 is a side elevational of the package structure of Figure 3 showing the bag in place but cut away, prior to compression and rotated through 90 degrees so that the side with the connections is at the top.
  • Figure 5 is the same view as that of figure 4 showing the package compressed and the bag closed.
  • Figure 6 is a view similar to that of Figure 5 showing a modified arrangement of the connection portion with the package rotated for transportation and unfolding.
  • Figure 7 is an isometric view similar to that of Figure 2 showing a further modified arrangement of the connection portion.
  • Figure 8 is side elevational view of a package showing a yet further modified arrangement of the connection portion.
  • Figure 9 is an end elevational view of package as shown in Figure 8 with the compression released and the strip partly unfolded for use.
  • Figure 10 is a side elevational view of the package of figure 9 showing further details of the strip and the subsequent cutting thereof into sheet portions.
  • Figure 11 is an isometric view of a package according to the present invention showing the package after release of the compression with the strip partly unfolded for use and with the bag omitted for convenience of illustration.
  • FIG. 1 to 5 A first example of a package according to the invention is shown in Figures 1 to 5, where the package comprises a generally rectangular body 10 formed from a strip or sheet 11 of a pliable material to be packaged and generally this material will be of a fibrous nature formed by woven or non-woven material although this is not essential to the package structure. Many materials of various thicknesses can be packaged using the technique as described herein provided the materials can accept the creasing necessary at the end of each folded strip portion.
  • the strip has a width greater than its thickness so as to define two generally flat surfaces and two side edges.
  • the strip is preferably of constant width but not necessarily so.
  • the strip has a leading end 12 and a trailing end 13 of the package and otherwise is continuous through the package.
  • the package when oriented in its normal position for transportation or use as shown in Figure 2 has a top 14, a bottom 15, two sides 16 and 17 and two ends 18 and 19.
  • the package is formed by a plurality of stacks of strips. In the embodiments shown there are four stacks of the strip indicated respectively at 20, 21, 22 and 23. The stacks are parallel and directly side by side with no intervening elements. The stacks are parallel to the sides 16, 17. The package has end stacks 20 and 23 and a plurality (in this embodiment two) of intermediate stacks.
  • stack as used herein is not intended to require that the stacks be vertical or that any particular orientation of the stacks is required. While the stacks are normally formed by placing the strips each on top of the previous to form a generally upright stack, this is not essential to the construction.
  • the dimensions of the package can of course be varied in accordance with the requirement so that the number of stacks, the length of each stack and the height of each stack can be varied within wide limits.
  • Each stack of the strip comprises a plurality of portions of the strip which are laid on top of one another.
  • the portions are folded back and forth to form accordion folded sheets at respective end fold lines 25 and 26 so that the fold lines lie in a common vertical plane defining the ends 18 and 19 of the package.
  • Each portion of the strip lies directly on top of the previous portion so that, with the strip being of constant width.
  • the side edges 27 and 28 of the portions of the strip lie in common vertical planes 27A. The side edges 27 of the strips of the stacks are therefore aligned and the side edges 28 of the strips of the stacks are also aligned.
  • the package is formed by laying the portions each on top of the next from a bottom portion 29 up to a top portion 30 to form the stack.
  • the package is thus formed from the plurality of stacks each of which has a length in the direction of the strip portions from which it is formed equal to that of the other stacks and therefore equal to that of the package; and the stacks are formed up to a common height which is therefore equal to the height of the package.
  • the package is wrapped by a flexible packaging material 40 preferably of heat sealable non-permeable plastics which encompasses the whole of the package.
  • the packaging material is preferably formed as a bag which includes a base 41 and sides 42 with an open top 43 to be closed and wrapped over the package and heat sealed as indicated in Figure 5 at 43A.
  • the package is compressed from the ends 14 and 15 to significantly reduce the height of the package and this compression causes air to be extracted or expelled from the package.
  • the sealed bag is used in a vacuum packaging system to maintain the air outside the bag so that the air pressure outside the bag acts to maintain the package compressed in the height direction and maintains the stacks in contact side by side.
  • the amount of compression and thus the amount of height reduction can be determined so as to minimize the volume of the package without interfering with the required loft of the product when withdrawn from the package.
  • the package defined solely by the stacks and the sealed bag thus defines a free standing rigid structure. In this way the package structure avoids the necessity for rigid sides of a box or similar container so the package structure is stable due to the compression of the stacks to reduce the height of the stacks and due to the pressure of each stack against the sides of the next adjacent stacks.
  • the flexible packaging material is not necessarily a bag but can be a simple wrapping.
  • the use of vacuum to hold the wrapping in place and the stack compressed is preferred but not essential.
  • Compression of the package is only possible in the direction D which is at right angles to the surfaces of the portions of the strip. This acts to compress the thickness of the portions so that the dimension of each stack in the direction D is reduced by that compression. Compression along the portions or at right angles to the stacks is not possible since this will act to distort the strip.
  • Mechanical compression therefore of the package in the direction D by clamping plates D1 and D2 thus reduces the dimension of the package in that direction allowing the air to be withdrawn from the flexible packaging material 40 causing the packaging material to be pulled down onto the package to maintain it in its compressed condition and to apply pressures tending to hold the stacks in intimate contact.
  • the base 41 of the packaging material or bag 40 is shaped and dimensioned so as to be slightly larger than the rest or uncompressed condition of the package structure itself. In this way the package structure can be readily inserted into the formed plastics packaging material or bag and can remain in place held by the packaging material.
  • the package structure is in the compressed and vacuumed condition. In this condition the sides 42 of the packaging material are both compressed in the direction D so as to form wrinkles or creases 39.
  • the vacuum is released, however, the expansion of the package from its compressed condition to its normal relaxed condition will cause the bag to expand to its initial dimensions thus causing the creases 44 to be extracted.
  • the package can be oriented as shown in figure 2 which is the same orientation as it is formed by laying the strip portions horizontally to build up the stacks vertically as stacks.
  • the top of the bag is at the top of the package.
  • the package is rotated through 90 degrees so that one end 18 is at the top. This can be done but is not necessary but is not necessary to assist splicing as discussed hereinafter.
  • the top of the bag is located at the end of the package.
  • the package can be rotated so the one side is at the top as shown in figure 11. In all these orientations the package is stable when wrapped so that it can be transported and handled using conventional lifting and handling systems, stacked on pallets or stacked on top of other packages.
  • the package be oriented at least for unfolding so that the stacks remain vertical to supply the strip to the end use machine as shown in figures 9 and 10.
  • the stacks 20, 21, 22 and 23 are all vertical and side by side so that the individual folded strip portions are horizontal from the horizontal top strip portion 30 of each of the stacks to a horizontal bottom strip portion 29 of each of the stacks. It is appreciated therefore that in this arrangement each stack will necessarily be unfolded in turn from the top strip portion 30 down to the bottom strip portion 29.
  • the initial structure of the package as shown in figure 1 includes the stacks formed side by side with the strip of each separate from the strip of the next. This can be achieved in one arrangement by slitting a web into a plurality of side by side strips and by folding those strips simultaneously side by side using a carriage having a pair of nip rollers.
  • the nip rollers lie in a horizontal plane and extend at right angles to the sides 16 and 17.
  • the nip rollers are reciprocated on the carriage in a direction at right angles to their length so that the nip moves back and forth between the ends 18 and 19 to accurately lay down a measured strip length and to fold the strip portions at the fold lines 25, 26.
  • the top end strip portion 30 of each stack 20 generally lays across the top of the stack and has the leading free end 44 at the end 18 which is draped down from the top 14. The end at the top of the stack 20 can be pulled out to form the leading end 12.
  • the bottom strip portion 29 includes a tail portion 45 which is pulled out from underneath the stack or is formed prior to the formation of the stack as a piece of the strip which hangs out from or beyond the side 18 of the package.
  • the package structure in figure 1 with the tails 45 not yet connected or spliced and simply free at the top of the packaging material for splicing after transportation and storage is completed. It will be appreciated that the package structure is stationary and therefore readily available for leisurely splicing when it has been moved to the machine to be supplied. Splicing can therefore be effected after the transportation and while the package is awaiting unfolding or even while the first stack 20 is being unfolded.
  • tails 45 upwardly along the side of the package to a position at the top of the package makes the tails readily available so that the packaging material previously described can remain in place with simply the top portion of the packaging material or bag opened or removed to allow access to the top portions 44 and the top end of the tail portions 45.
  • tail portions 45 are arranged at the end 18 of the package. It is theoretically possible but practically undesirable that alternate ones of the tail portions are arranged at opposite ends 18 and 19 so that for example the tail portions 45 of the stacks 21 and 23 would be arranged at the end 19.
  • the tail portions 45 are spliced to the top portions 44 by a splice 46.
  • a splice 46 As the splice can be done without high speed action necessary, effective splicing systems can be used including stitching, taping and heat sealing which take more time than is generally available on a running line.
  • the splices are shown overlapping but in practice, butt type slices may be used to prevent an overlap portion.
  • the splicing is effected such that the surface A of each strip is attached to the surface A of the strip of the next adjacent stack and similarly the surfaces B are also connected. In some cases this is essential as the strip has different surface characteristics. In other cases, this may not be essential to the processing of the strip but in general this is a preferred arrangement to ensure that the strip is supplied in a consistent manner and to avoid twisting of the strip.
  • this turn of twist is applied at a first fold line 48 at a top of a first portion 50 and a second fold line 49 at a bottom of a portion 51.
  • the first fold line 48 and the portion 50 are aligned with the stack 20 and the fold line 48 is arranged at an angle of 45° to the horizontal.
  • This forms a horizontal portion 52 of the strip which extends from the fold line 48 to the fold line 49 and is therefore in effect horizontal and at right angles to the normal vertical direction of the tail portion 45 and the portions 50 and 51.
  • the first fold line 48 causes the horizontal portion 52 to lie outside of the vertical portion 50 of the tail portion 45.
  • the second fold line 49 is arranged so that the vertical portion 51 of the tail portion 45 is inside the horizontal portion 52. This arrangement introduces one turn of twist while minimising the length of the horizontal portion 52 and providing a tidy arrangement which is aesthetically attractive and which limits the loose parts available of the tail portion 45 which could otherwise interfere and inter-entangle.
  • the vertical portion 51 of the tail portion 45 then extends vertically up the stack 21 to the splice 46, from which the portion 44 continues up the side of the stack 21 and onto the top of the stack 21.
  • the horizontal portion 52 is preferably arranged at or immediately adjacent the bottom of the stack 20 so that almost all of the tail portion 45 is supported by the stack 21 as the stack 20 is withdrawn. There is therefore little or no possibility for the tail portion 45 becoming entangled with the strip from the stack 20 as it is withdrawn and prior to the transfer from the bottom portion 29 through the tail 45 to the top portion 44 of the stack 21.
  • FIGS 3 and 5 is shown the same package structure as that of figure 2.
  • the package is shown in a condition partly spliced so that only some of the tail portions 45 are connected to the associated portion 44 of the next stack.
  • the package is shown in the same orientation as in figure 2 with the top 14 uppermost.
  • the compression plates D1 and D2 therefore operate vertically.
  • the same package is rotated in the clamping plates D1 and D2 so that the plates are vertical and the end 18 is moved to the top. This places the tails 44 and 45 in a horizontal orientation to make easier the splicing and twisting since the tails remain in place supported by the horizontal end 18.
  • the package is in the condition prior to compression but after twisting and splicing with the bag 40 open.
  • the package is in a compressed condition, maintained by the outer wrapping or bag 40. In this condition, the package height between the ends 14 and 15 is reduced from the rest height to a compressed height as shown which is a proportion of the rest height which varies depending upon the compressibility of the material.
  • connection portion 44, 45 This reduction in height leaves a free portion 54 of the connection portion 44, 45 which must be accommodated in the compression. This is achieved as shown in Figure 5 by carefully folding the connection portion 44, 45 at a first transverse fold line 53 and at a second transverse fold line 53A both of which are substantially at right angles to the length and which are spaced by one half the length of the free portion 54.
  • Compression is effected mechanically in the direction D by the clamping plates D1 and D2 until the required reduction in height of the package is achieved. During this compression the connection portion 44, 45 becomes slack and the excess length portion 54 is formed.
  • the folding action is effected manually and carefully so that the fold as shown in Figure 2 lies on the respective stack aligned with the respective portion 44.
  • the bag is closed and sealed using a conventional commercially available vacuum sealing system which seals the top edge of the bag and evacuates the bag. It is also possible that the vacuum extraction can be used to assist mechanical compression while the bag is left unsealed so that the bag can be opened to effect the careful folding action and sealed after the folding is complete. However the wrinkling of the tail 45 during vacuum extraction should be avoided.
  • a spacer member 58 is located between the connection portions 44, 45 and the end 18 containing the fold lines 25. It will be appreciated that the fold lines, even when significantly compressed, form an uneven surface with a series of transverse recesses and ribs defined by the actual fold lines themselves. It is important that the connection portions 44, 45 are maintained flat and are free from the wrinkles which would otherwise be formed should these connection portions be compressed by the vacuum from the bag (that is the air pressure outside the bag) onto the end 18.
  • the spacer member 58 therefore comprises a stiffener sheet 59 formed of a relatively stiff flat material defining a flat outer surface 60 which is attached to or carries a compressible filler material 61 on the underside, for example of a closed cell foam.
  • the stiffener sheet can be formed of cardboard or similar material which has sufficient rigidity to remain substantially flat and thus define the flat surface 60 presented toward the connection portions.
  • the compressible material or foam is arranged to fill the recesses between the fold lines and to compress at the fold lines so that the stiffener sheet can remain flat and is not compressed into the recesses.
  • the spacer member is inserted during the process at a suitable point prior to the vacuum action of the bag.
  • the height of this spacer member is equal to the compressed height of the package.
  • the spacer member can also be used in the situation previously described where the package is transported after compression and wrapping in the configuration shown in Figure 1 where the spacer member is used to prevent wrinkling of the tail portions 44 and 45.
  • FIG 6 there is shown an alternative arrangement for the connecting portion which avoids the necessity for folding the connecting portion during compression.
  • the connecting portion extending from the tail portion 45 to the tail portion 44 is twisted as previously described to form a twist portion 47 and spliced to form a splice portion 46.
  • the splice is effected so that the connection portion is tight across the end 18 of the package with no fold corresponding to the fold 54 of Figure 2.
  • the package is shown in the compressed condition with the bag sealed and under vacuum.
  • the package is shown in the orientation in which the bottom end 15 rests upon a horizontal support and the top end 14 is presented upwardly. In this orientation the bag can be opened releasing the vacuum and allowing the package to expand back to its rest condition. During this expansion, the connection portion is of insufficient length to reach the rest height and therefore the excess length necessary to form an extended connection portion is effected by pulling from the top strip portion 30 as indicated at the arrow 30A and 30B.
  • a slip sheet 30C positioned between the top two strip portions and a third strip portion 30D.
  • the slip sheet can be formed of any suitable flexible low friction sheet of plastics or similar material. The slip sheet covers the whole area between the ends and the sides and thus separates the top two strip portions from the remainder of the package.
  • connection portion 44, 45 there is shown an alternative arrangement for effecting the twisting, splicing and folding actions in the connection portions 44, 45.
  • the package remains in the original orientation during processing so that the top 14 remains uppermost.
  • the connection portion defined by the tails 44 and 45 is twisted to form a twist portion 62 as previously described and is spliced to form a splice portion 63 as previously described except that the twist and the splice are located on the top end 14.
  • twist and the splice are located on the top end 14.
  • the splice is effected so that the height of the tail 45 from the bottom of the package along the end of each stack is equal to the height of the package in the uncompressed condition.
  • the length of the tail portion is greater than the compressed height of the package so that an excess portion is formed which is then carefully folded as shown in Figure 7.
  • a multiple fold arrangement can be used to define the fold 66 including fold lines 67, 68, 69 and 70.
  • the spacer plate 68 is located in position between the folds 66 and the tails 45 and the end 18 of the package.
  • FIG 8 there is shown a yet further alternative technique for accommodating the necessary splice, twist and fold in the connection portion.
  • the splice 71 is located on top of the top end 14 similarly to that arrangement in Figure 7.
  • the twist and fold are located on the end 18 of the package and are combined into one element.
  • there is a first upper fold line 72 and a second fold line 73 which is in a direction which automatically twists the strip about its length to make the required single twist 74 at the same position as the fold portion.
  • the folding is an extended version of the fold in figure 2. This careful folding provides a clean attractive appearance and reduces the crinkling or creasing of the strip since the fold lines 72 and 73 are spaced by the length of the fold portion 74 and are close to transverse to the strip length.
  • FIGS 9 and 10 there is shown the technique for unfolding the packages previously formed and shown in figures 2 to 8.
  • the specific package illustrated is that shown in figure 8, but the position of the twist and splice have little or no effect on the unfolding operation as will be appredated and therefore the packages shown in figures 2 to 7 will operate in the same manner.
  • the connecting portions fall into loose lengths with the twist 74 at some position along the length allowing the connecting portion to effect transfer of unfolding from one stack to the next
  • the bag 40 is cut away so that the top 43 and the sides 42 are removed leaving only the base 41, and a portion of the side draped over the surfaces 82.
  • the spacer 58 is removed.
  • the package is laid on an unfold stand 80 for unfolding.
  • This provides a generally horizontal main support surface 81 on which the stacks 20 to 23 stand upwardly in a generally upright manner for unfolding from the top downwards.
  • the stand 80 includes a side support surface 82 at right angles to the surface 81.
  • the stand is then inclined at a shallow angle of the order of 10 to 20 degrees which is just sufficient to tilt the package to one side so that the stack 23 leans against the surface 82 and the remaining stacks each rest on the next adjacent stack.
  • the angle is just sufficient to prevent toppling or buckling of the stacks away from each other in a direction away from the surface 82.
  • the angle is therefore selected to prevent the possibility of toppling of the first stack and each subsequent stack as it becomes the first stack as the others are unfolded.
  • the first stack 20 is thus available to be unfolded from the top downwardly, followed by each stack in turn.
  • This arrangement has the advantage that no other support for the package sides is required and the package is stable in the position shown during unfolding. Also transfer of unfolding from one stack to the next can occur without frictional contact of the strip with packaging material or other support which can cause tearing of weaker material.
  • a marker (not shown) is located adjacent the packaging system for applying a machine readable marking 90 on the strip in registration with the fold lines.
  • the markings can comprise an ink jet marking, possibly in the form of a dot or square, visible both to the eye and to the cutting machine or in some cases just to the machine.
  • the marking may or may not be located directly at the fold line depending upon the location of the machine reader 91 relative to the cutting blade 92 which is therefore arranged to effect a cutting immediately at or adjacent to the fold line.
  • the marking is located in advance of the fold line or the intended cut line.
  • the marking may extend only across a short part of the width of the strip. It will be appreciated that as the markings are registered with respective ones of the fold lines, each marking is offset from its associated fold line by the same distance. In an arrangement in which only the fold lines are marked by the ink jet marking, there will be only one marking on each strip portion.
  • the number of sheet elements on each strip portion is exactly a whole number. In many cases, the relative lengths of the elements and the strip is such that the whole number is greater than one.
  • Each intended cut line therefore can be marked or only the fold lines may be marked.
  • the cut lines are therefore arranged so that the fold lines are arranged sufficiently close to an end of the sheet elements to avoid compromising the performance of the sheet elements.
  • a package formed from the same stacks as previously described is oriented so that the stacks are horizontal each on top of another so that they can be unfolded from the top stack downwardly.
  • This can use the same splicing, twisting and folding arrangements as previously described.
  • a more simple splicing technique is available when the package is oriented in this manner.
  • the package structure is oriented so that the stacks 20 to 23 are horizontal.
  • the application of vertical loads onto the package from other packages causes the transfer through the package structure to an underlying pallet without distorting or damaging the strip. This occurs due to the fact that the strip is relatively stiff across its width and when compressed into the stacks, the strips together form a substantially rigid structure.
  • the top stack 20 is partly unfolded from the leading end portion 12 toward a trailing end portion 94 of that stack at the end 14 of the package 10.
  • the next stack 21 has the leading end portion 95 thereof at the same end 14 as the trailing end 94 and is connected by a connecting portion 96 including a splice 97 to the leading end 95 of the stack 21.
  • the connecting portion 96 lies in the same plane as the end 14 and extends generally diagonally between the stacks 20 and 21.
  • the trailing end (not visible) of the stack 21 is connected to the leading end of the stack 22 by a connecting portion (not visible) including a splice.
  • the trailing end of the stack 21, the connecting portion and the leading end of the stack 22 are all arranged at the end 15 of the package coplanar with the end 15.
  • a further connecting portion 98 and splice 99 at the end 14 interconnect the trailing end 100 of the stack 22 and the leading end 101 of the stack 23.
  • the connecting portions 96, 98 and any further connecting portions required for additional stacks are arranged at the end 14.
  • the connecting portions for alternate stacks are arranged at the opposed end 15.
  • the connecting portions are coplanar with the end portions of the strip and thus lie flat against the side of the package when completed and wrapped as described herein.
  • the splicing technique shown ensures that, when the strips are unfolded as shown in figure 11, no twist is applied to the strip as the unfolding transfers from one stack to the next.
  • the stack 22 has the same orientation as stack 20 and the stack 23 is reversed as stack 21.
  • This reversal can be obtained by physically lifting the intermediate stacks and rotating them through 180 degrees about an axis at right angles to the stacks.
  • the same effect can be achieved by twisting the strip through 180 degrees as it is fed to the folding system for simultaneous side by side folding as previously described. This twisting has the effect of placing the side A at the outside in the fold lines at the end 18 of the stacks 20 and 22 and placing the side B outside on the fold lines at the same end for the stacks 21 and 23.
  • the folding and compression technique as previously described can be used for a single stack of a strip.
  • a strip can be relatively wide, for example a length of carpet or fabric which is folded back and forth, packaged in the bag, compressed and maintained compressed by the air pressure outside the evacuated bag.
  • the compression reduces the height of the stack to an extent such that the structure becomes rigid and free standing so as to protect the strip and allow easy handling.
  • the bag may be further wrapped by a shrink wrap material or other material which will hold the package in the compressed condition.
  • the package can be formed by building each stack in turn from a single end of the strip so that the strip is continuous from each stack to the next without the necessity for splicing.
  • This technique has the disadvantage that the building is relatively slow and requires a number of winding stations to take up a full width of a web from which the strips are slit.
  • the package as shown in figure 1 is compressed, wrapped and transported to the use location while the package remains with the top and bottom end portions unconnected.
  • each stack is connected to a corresponding stack of a next adjacent package.
  • each stack supplies a separate strip to the use machine and the strip of each stack is connected by a splice at the use location to a stack of a further package for continuous supply of that separate strip.
  • the stacks are however arranged side by side in the package and the bottom strip portions are exposed as tails as shown in figure 1 for connection.
  • alternate ones of the tail portions 45 are arranged at the opposite end of the package structure.
  • the automatic twisting effect caused by the transfer of unwrapping from one layer to the next causes the introduction of a 360 degree twist into the strip. That twist is then cancelled by a twist in the opposite direction at the next transfer position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Package Frames And Binding Bands (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP98929172A 1997-06-19 1998-06-17 Packaging a strip of material Expired - Lifetime EP0910542B1 (en)

Applications Claiming Priority (19)

Application Number Priority Date Filing Date Title
US878826 1992-05-05
US889737 1992-05-28
US08/878,826 US6035608A (en) 1997-06-19 1997-06-19 Packaging a strip of material
US08/889,737 US5927051A (en) 1997-06-19 1997-07-08 Packaging a continuous strip of material
US93944497A 1997-09-29 1997-09-29
US939444 1997-09-29
US94825897A 1997-10-09 1997-10-09
US948256 1997-10-09
US948258 1997-10-09
US08/948,256 US5966905A (en) 1997-06-19 1997-10-09 Packaging a strip of material in layers with intervening splices
US08/975,037 US6067775A (en) 1997-11-18 1997-11-18 Packaging a strip of material by folding
US975037 1997-11-18
US24890 1998-02-17
US09/024,890 US6009689A (en) 1998-02-17 1998-02-17 Packaging a strip of material in layers
US64744 1998-04-23
US09/064,744 US6176068B1 (en) 1998-04-23 1998-04-23 Packaging a strip of material in layers with intervening splices
US81826 1998-05-20
US09/081,826 US5987851A (en) 1998-05-20 1998-05-20 Packaging a strip of material
PCT/CA1998/000592 WO1998058864A1 (en) 1997-06-19 1998-06-17 Packaging a strip of material

Publications (2)

Publication Number Publication Date
EP0910542A1 EP0910542A1 (en) 1999-04-28
EP0910542B1 true EP0910542B1 (en) 2000-04-26

Family

ID=27578033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98929172A Expired - Lifetime EP0910542B1 (en) 1997-06-19 1998-06-17 Packaging a strip of material

Country Status (26)

Country Link
EP (1) EP0910542B1 (zh)
JP (3) JP2002507174A (zh)
KR (1) KR100399777B1 (zh)
CN (1) CN1201989C (zh)
AP (1) AP9901689A0 (zh)
AT (1) ATE192117T1 (zh)
AU (1) AU734791B2 (zh)
BR (1) BR9810162A (zh)
CA (1) CA2274272C (zh)
CZ (1) CZ9904590A3 (zh)
DE (2) DE19881126T1 (zh)
DK (1) DK0910542T3 (zh)
EA (1) EA001473B1 (zh)
ES (1) ES2148007T3 (zh)
GR (1) GR3034008T3 (zh)
HK (1) HK1020185A1 (zh)
HU (1) HUP0004788A3 (zh)
IL (1) IL133569A (zh)
NO (1) NO996293L (zh)
NZ (1) NZ500798A (zh)
OA (1) OA11263A (zh)
PL (1) PL187211B1 (zh)
PT (1) PT910542E (zh)
SK (1) SK283739B6 (zh)
TR (1) TR199903129T2 (zh)
WO (1) WO1998058864A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10216419B4 (de) * 2002-04-12 2006-07-13 Saurer Gmbh & Co. Kg Vorrichtung und Verfahren zur Korrektur einer zur Verarbeitungsmaschine geführten flexiblen Materialbahn

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6336307B1 (en) 1997-10-09 2002-01-08 Eki Holding Corporation Method of packaging a strip of material for use in cutting into sheet elements arranged end to end
US6293075B1 (en) 1999-03-08 2001-09-25 Bki Holding Corporation Packaging a strip of material
US6321512B1 (en) * 1999-03-08 2001-11-27 Bki Holding Corporation Method of packaging a strip of material
DE19918765C1 (de) * 1999-04-24 2001-03-01 Gevas Verpackungsmaschinen Gmbh Block aus einer abgetafelten Bahn aus Material zur Herstellung von Hygieneartikeln, z.B. saugfähige Vorlagen
US6841019B2 (en) 1999-12-10 2005-01-11 The Procter + Gamble Company Process for splicing the bottom end portion of the first stack of web material and the top end portion of the second stack of the material
EP1106553A1 (en) * 1999-12-10 2001-06-13 The Procter & Gamble Company Process for splicing the bottom end portion of a first stack of web material and the top end portion of a second stack of the material
EP1138624B1 (en) * 2000-03-31 2004-05-12 GEVAS Verpackungsmaschinen GmbH Apparatus and method for forming a block of folded material
AU4292500A (en) * 2000-03-31 2001-10-15 Gevas Verpackungsmaschinen Gmbh Apparatus and method for forming a block of folded material
WO2002057168A1 (en) * 2001-01-18 2002-07-25 Gevas Verpackungsmaschinen Gmbh Method and device for supplying web material
ES2280342T3 (es) * 2001-02-12 2007-09-16 Bki Holding Corporation Metodo para formar un paquete a partir de una tira de material.
EP1397293B1 (en) 2001-06-20 2006-10-25 BKI Holding Corporation Packaging a strip of material in side by side stacks spliced end to end
AU2008359463A1 (en) * 2008-07-17 2010-01-21 Sca Hygiene Products Ab Stack of folded material
AU2011373053B2 (en) 2011-07-13 2015-10-29 Essity Hygiene And Health Aktiebolag Dispenser and stack of sheet products
CN102730248A (zh) * 2012-06-05 2012-10-17 常州市风雷精密机械有限公司 包装袋全自动封口及切割装置
CN103662214B (zh) * 2013-12-05 2015-10-28 浙江双友物流器械股份有限公司 一种吊带的包装方法
CN104555613A (zh) * 2014-12-25 2015-04-29 重庆威斯特电梯有限公司 便于电线折叠的电梯
JP6267821B1 (ja) * 2017-06-29 2018-01-24 株式会社旭金属 小袋連続体の折りたたみ装置
CN112573021A (zh) * 2019-09-27 2021-03-30 昆山市蓝天印务有限公司 自黏标贴花包装方法
CN110589179B (zh) * 2019-09-30 2020-10-02 湖北中烟工业有限责任公司 一种内腔体积可调整的包装盒
CN112693720B (zh) * 2020-12-24 2021-07-23 鹤壁市人民医院 一种影像科用方便取片装置

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US3729367A (en) * 1971-06-01 1973-04-24 Oliver Tire & Rubber Co Rubber product for tire recapping apparatus and method for making
GB2227994B (en) * 1989-02-14 1993-06-23 Almex Control Systems Ltd Feeding system for fanfold web in cassettes
US5087140A (en) * 1989-12-14 1992-02-11 Keeton J Herbert Festooning machine for cloth strips

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10216419B4 (de) * 2002-04-12 2006-07-13 Saurer Gmbh & Co. Kg Vorrichtung und Verfahren zur Korrektur einer zur Verarbeitungsmaschine geführten flexiblen Materialbahn

Also Published As

Publication number Publication date
KR100399777B1 (ko) 2003-09-29
SK181599A3 (en) 2001-03-12
TR199903129T2 (xx) 2000-08-21
KR20010013989A (ko) 2001-02-26
CN1201989C (zh) 2005-05-18
AP9901689A0 (en) 1999-12-31
WO1998058864A1 (en) 1998-12-30
JP2002507174A (ja) 2002-03-05
NO996293D0 (no) 1999-12-17
PT910542E (pt) 2000-10-31
DE69800128T2 (de) 2000-12-14
NO996293L (no) 1999-12-17
EA200000034A1 (ru) 2000-08-28
ES2148007T3 (es) 2000-10-01
IL133569A0 (en) 2001-04-30
EA001473B1 (ru) 2001-04-23
HK1020185A1 (en) 2000-03-31
HUP0004788A3 (en) 2002-06-28
CZ9904590A3 (cs) 2001-08-15
BR9810162A (pt) 2000-08-08
IL133569A (en) 2003-06-24
AU734791B2 (en) 2001-06-21
ATE192117T1 (de) 2000-05-15
OA11263A (en) 2003-07-30
GR3034008T3 (en) 2000-11-30
AU7902898A (en) 1999-01-04
JP2003312758A (ja) 2003-11-06
EP0910542A1 (en) 1999-04-28
DE19881126T1 (de) 1999-09-23
CA2274272C (en) 2000-04-18
PL187211B1 (pl) 2004-06-30
CN1260760A (zh) 2000-07-19
HUP0004788A2 (hu) 2001-05-28
JP2004238207A (ja) 2004-08-26
NZ500798A (en) 2000-04-28
DE69800128D1 (de) 2000-05-31
SK283739B6 (sk) 2003-12-02
DK0910542T3 (da) 2000-09-25
PL337160A1 (en) 2000-07-31

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