WO2001026889A1 - Single face packaging material - Google Patents

Single face packaging material Download PDF

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Publication number
WO2001026889A1
WO2001026889A1 PCT/ZA2000/000183 ZA0000183W WO0126889A1 WO 2001026889 A1 WO2001026889 A1 WO 2001026889A1 ZA 0000183 W ZA0000183 W ZA 0000183W WO 0126889 A1 WO0126889 A1 WO 0126889A1
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WO
WIPO (PCT)
Prior art keywords
core
sheet
single face
packaging
laminated
Prior art date
Application number
PCT/ZA2000/000183
Other languages
French (fr)
Inventor
James Warren Gere
Original Assignee
Gere, Jeanette, Kathleen
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 Gere, Jeanette, Kathleen filed Critical Gere, Jeanette, Kathleen
Priority to AU11072/01A priority Critical patent/AU1107201A/en
Publication of WO2001026889A1 publication Critical patent/WO2001026889A1/en

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Classifications

    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/44—Applications of resilient shock-absorbing materials, e.g. foamed plastics material, honeycomb material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure

Definitions

  • Corrugated cardboard in single face format is widely used as a packaging material, for instance to form protective containers or wrapping material.
  • sheet material of this type is limited to a single folding plane by virtue of the one way fluting direction of the corrugated material.
  • corrugated material can only he mnnnfactnred with sophisticated machinery with specific 'corrugating' technology, is accordingly expensive and limited to that specific technology.
  • a limiting factor of the known corrugated technology is the method of manufacturing whereby the flutiagaaatterial is steamed and or preheated to allow the formation of the fluting material int ⁇ -co ⁇ ugations. Thereafter requiring excessive drying of the corrugated material.
  • lightweight single faced sheet material which has a thickness of 1 to 100mm, preferably 5mm, most preferably between 2mm and 5mm and which comprises a core laminated to one outer ply.
  • the core comprising a multitude of neighboring, multi-sided, open-ended cells typically made of kraft fluting' type material and the outer ply being laminated over one of the open ends of the cell.
  • the outer ply is also of kraft material.
  • the sheet packaging material summarised above.
  • the method comprising the steps of manufacturing a core composed of a multitude of neighbouring, multi-sided, open-ended cells of kraft material and laminating the outer ply over one of the open ends of the cells.
  • the core may be manufactured by applying spaced apart, parallel g ie strips a ⁇ oss each of a plurality of sheets of kraft material.
  • the glue strips on alternate sheets being off-set with respect to the ghie strips on the intermediate sheets, superimposing aligned sheets upon another to form a stack, cutting a narrow edge portion transversely from the stack and thereafter expanding the said edge portion to form the core.
  • the outer ply is then laminated over one of the open ends of the cells forming the core.
  • a plurality of core sheets may be joined end to end and folded fanfold style into a container from which core material is withdrawn continuously and laminated onto sheet of outer ply material which is withdrawn simultaneously from further reels or containers.
  • Corrugated packaging rnaterial is commonly known in the art.
  • the core of such material is in corrugated form as adhesively laminated onto outer sheet and likewise the object of invention des ⁇ jbf y l in Patent WO 0006374 replaces the known art corrugated form or fluted configuration with multi sided fluting material as described herein.
  • single face corrugated packaging material generally used in a product wrapping or content protective environment is of necessity required to be lightweight while, however, pliable for wrapping purposes.
  • the conventional single face corrugated packaging is thus lightweight but has the disadvantage that its ability to fold extends to the direction of the corrugations and thereby cannot be described as 'pliable' material capable of formation around the product.
  • a further disadvantage of the prior art corrugated material is the specific and high cost technology necessitated by the need for material pre ⁇ heating, high maintenance steam plant facilities, and extensive drying technology, amongst others.
  • This Svet end' and then 'dry end' technology continually presents a major cost challenge to the industry.
  • Of significance is the high wastage of global (forestry) natural resources in that this industry's percentage of waste impacts sufficiently to draw major attention to the problem at national governmental level and now at global level.
  • Figure 1 shows a perspective view of a sheet of single face packaging material according to this invention, with a portion of the outer ply removed to reveal the inner core;
  • Figure 2 diagrammatically illustrates the manner in which the core is manufactured
  • Figure 3 diagrammatically illustrates an apparatus for manufacturing the core
  • Figure 4 diagrammatically illustrates an apparatus for manufacturing the packaging material seen in Figure 1.
  • Figure 1 shows a sheet of single face packaging material 10 which typically has an overall thickness 12 of 4mm or less and which consists of an inner core 14 laminated onto an outer ply 16.
  • the core 14 consists of a multitude of neighbouring cells 18 each of which is multi-sided in shape.
  • the cells of the core 14 are formed by strips of kraft material such as fluting material typically of 112gsm density.
  • the outer ply 16 is also of kraft material, typically fluting or kraft liner of 125g density. Lighter weight sheet material is achieved using lower grammage outer ply material, typically 112g and 105gfrutingas the outerply.
  • Figure 2 illustrates the principle by which the core 14 is manufactured.
  • the numerals 20 and 20.1 illustrate alternate sheets of kraft material which are seen edge on. Each of the sheets is typically rectangular in shape.
  • Ghie is applied to one major surface of each sheet 20, 20.1 so as to form a plurality of parallel, spaced apart ghie strips 22, 22.1 extending across the sheet
  • the ghie strips 22 on the alternate sheets 20 are off -set, by half of the distance by which the glue strips are spaced apart from one another, relative to the ghie strips 22.1 on the intermediate sheets 20.1.
  • FIG. 3 diagrammatically illustrates an apparatus 24 used to apply the g ie strips to the sheets 20, 20.1.
  • the apparatus 24 comprises a frame having side members 26 between which a nip roller 28, a series of ghie application rollers 30 and a transfer roller 32 are rotatable.
  • the roller 32 is carried by a shaft which is driven by a motor 34, the drive being transferred to the shafts carrying the other rollers by meshing sprockets 36, 38 and 40.
  • the roller 32 passes through a tray 42 containing liquid ghie and transfers the ghie to the individual ghie application rollers 30.
  • the individual sheets 20, 20.1 are fed successively into the nip between the nip roller 28 and the glue application rollers 30, With each alternate sheet being off-set laterally from the intermediate sheets by half the spacing of the glue application rollers. It will be understood that the ghie application rollers accordingly apply the parallel glue strips 22, 22.1 to the sheets in accordance with the format described above.
  • the sheets 20, 20.1 After passage through the glue application apparatus 24, the sheets 20, 20.1 are aligned and stacked vertically one on top of the other, with the glue on each sheet adhering firmly to the neighbouring sheet.
  • a guillotine is used to trim off a narrow portion from an edge of the stack which is transverse to the glue strips.
  • the trimmed off edge portion can then be expanded to form a rectangular expanse of core 14.
  • the individual cells of the core have generally a hexagonal shape as illustrated, but it will be appreciated that the actual shape in practice will be determined inter alia by the width of the glue strips, i.e. the width of the glue application rollers 30.
  • the glue which is used in the process described above is typically a modified polyvinyl acetate resin emulsion, a suitable example being QAR I 73A available from Qualichem (Proprietary) Limited.
  • the core 14 After manufacture of the core 14 in the manner described above, it is laminated, using the same glue as described above, onto the outer ply to form a rectangular sheet 10.
  • the rectangular cores may be laminated individually between correspondingly dimensioned outer pry, either with the aid of a suitable laminating apparatus or by hand.
  • This length is folded fanf old style into a magazine type dispenser 63 or crate supported by a tensioning arm 42.
  • the continuous length of core material, designated 33 in Figure 4 is withdrawn over a serious of rollers 46 continuously to a laminating station 48.
  • outer ply material is withdrawn continuously from upper or lower drums 50, 50.1 to the laminating station.
  • the upper or lowerply, designated 52 and 52.1 are brought into contact with, and laminated to, the core material 44.
  • a ghie such as that described above is applied to either surface of the core or to one of the plies being withdrawn. The ply is thereafter pressed against the core by rollers 54.
  • the continuos sheet material which is produced is then fed over a conveyor 56 to a cutting and stacking station.
  • the sheet is either cut to length by a guillotine type mechanism 60 or wound up in a continuous roll on a reel material take- up station 61 to an ideal length of 70meters.
  • cores 14 could be laminated onto appropriately dimensioned outer ply in an automated process.
  • Core and outer ply could, for instance, be stored in respective magazines and withdrawn for individual lamination of each core between either outer ply material 50 or 50.1.
  • sheets 10 produced by the method described above will be eminently suitable for use in packaging, specifically in multi planar, pliable packaging applications.
  • the sheets may be pre treated such coatings, hardeners, printed etc and known art to form material which can subsequently be easily folded to form wrappings or containers to be used for packaging purposes.
  • Sheets 10 can also be used as support, impact resistant, filler material in packaging and other applications.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Abstract

A sheet of pliable, laminated packaging like material in the form of a sheet of laminated material (10), a non solid core (12) of lightweight material presenting a regular multitude of neighboring cells (18) multisided in shape. The cells (18) form preferably hexagonally profiled core (14), adhesively affixed on a sheet of thin, lightweight outer ply material (16) by itself subject to multi planar, bendable formation. Lamination of the core (12) and the outer sheet (16) into the laminated material (10) allows folding substantially in all planar directions, thus imparting ideally a multitude of packaging and wrapping applications.

Description

(1) TITLE OF THE INVENTION
SINGLE FACE PACKAGING MATERIAL
(2) CROSS REFERENCED APPLICATIONS O 006374A WO 029314A
(3) BACKGROUND TO THE INVENTION
Corrugated cardboard in single face format is widely used as a packaging material, for instance to form protective containers or wrapping material. However sheet material of this type is limited to a single folding plane by virtue of the one way fluting direction of the corrugated material. Also corrugated material can only he mnnnfactnred with sophisticated machinery with specific 'corrugating' technology, is accordingly expensive and limited to that specific technology. For example, a limiting factor of the known corrugated technology is the method of manufacturing whereby the flutiagaaatterial is steamed and or preheated to allow the formation of the fluting material intα-coπugations. Thereafter requiring excessive drying of the corrugated material.
Figure imgf000002_0001
(4) SUMMARY OF THE INVENTION
According to the present invention there is provided lightweight single faced sheet material which has a thickness of 1 to 100mm, preferably 5mm, most preferably between 2mm and 5mm and which comprises a core laminated to one outer ply. The core comprising a multitude of neighboring, multi-sided, open-ended cells typically made of kraft fluting' type material and the outer ply being laminated over one of the open ends of the cell. Typically the outer ply is also of kraft material.
Further according to the invention there is provided a method of manufacturing the sheet packaging material summarised above. The method comprising the steps of manufacturing a core composed of a multitude of neighbouring, multi-sided, open-ended cells of kraft material and laminating the outer ply over one of the open ends of the cells.
The core may be manufactured by applying spaced apart, parallel g ie strips aσoss each of a plurality of sheets of kraft material. The glue strips on alternate sheets being off-set with respect to the ghie strips on the intermediate sheets, superimposing aligned sheets upon another to form a stack, cutting a narrow edge portion transversely from the stack and thereafter expanding the said edge portion to form the core.
The outer ply is then laminated over one of the open ends of the cells forming the core. Alternatively a plurality of core sheets may be joined end to end and folded fanfold style into a container from which core material is withdrawn continuously and laminated onto sheet of outer ply material which is withdrawn simultaneously from further reels or containers.
(5) PRIOR ART DESCRIPTION
Corrugated packaging rnaterial is commonly known in the art. Conventionally the core of such material is in corrugated form as adhesively laminated onto outer sheet and likewise the object of invention desαjbfyl in Patent WO 0006374 replaces the known art corrugated form or fluted configuration with multi sided fluting material as described herein.
Similarly, single face corrugated packaging material generally used in a product wrapping or content protective environment is of necessity required to be lightweight while, however, pliable for wrapping purposes. The conventional single face corrugated packaging is thus lightweight but has the disadvantage that its ability to fold extends to the direction of the corrugations and thereby cannot be described as 'pliable' material capable of formation around the product.
A further disadvantage of the prior art corrugated material is the specific and high cost technology necessitated by the need for material pre~heating, high maintenance steam plant facilities, and extensive drying technology, amongst others. This Svet end' and then 'dry end' technology continually presents a major cost challenge to the industry. Of significance is the high wastage of global (forestry) natural resources in that this industry's percentage of waste impacts sufficiently to draw major attention to the problem at national governmental level and now at global level.
The technology described in this invention successfully addresses the disadvantages of the prior art technology with processing equipment at a fraction of the known art cost A further disadvantage of known art successfully addressed hereunder is the use of lighter weight per square meter material (known art single face material approx 300gsm compared to approx 200gsm hereunder) a significant saving in terms of reducing consumption of natural resource material by as much as 33%.
Other improvements of this invention over known art are yet to be calculated across this vast industry in terms of decentralization and job creation . f6ϊ BRTEFDESCRIPTIONOFTHE DRAWINGS
The invention will now be described in more detail, by way of example only, with reference to the accompanying drawings in which:
Figure 1 shows a perspective view of a sheet of single face packaging material according to this invention, with a portion of the outer ply removed to reveal the inner core;
Figure 2 diagrammatically illustrates the manner in which the core is manufactured;
Figure 3 diagrammatically illustrates an apparatus for manufacturing the core;
Figure 4 diagrammatically illustrates an apparatus for manufacturing the packaging material seen in Figure 1.
(7) DETAILED DESCRIPTION OFTHEDRAWINGS
Figure 1 shows a sheet of single face packaging material 10 which typically has an overall thickness 12 of 4mm or less and which consists of an inner core 14 laminated onto an outer ply 16. The core 14 consists of a multitude of neighbouring cells 18 each of which is multi-sided in shape.
The cells of the core 14 are formed by strips of kraft material such as fluting material typically of 112gsm density. The outer ply 16 is also of kraft material, typically fluting or kraft liner of 125g density. Lighter weight sheet material is achieved using lower grammage outer ply material, typically 112g and 105gfrutingas the outerply.
Figure 2 illustrates the principle by which the core 14 is manufactured. In this Figure, the numerals 20 and 20.1 illustrate alternate sheets of kraft material which are seen edge on. Each of the sheets is typically rectangular in shape.
Ghie is applied to one major surface of each sheet 20, 20.1 so as to form a plurality of parallel, spaced apart ghie strips 22, 22.1 extending across the sheet The ghie strips 22 on the alternate sheets 20 are off -set, by half of the distance by which the glue strips are spaced apart from one another, relative to the ghie strips 22.1 on the intermediate sheets 20.1.
Figure 3 diagrammatically illustrates an apparatus 24 used to apply the g ie strips to the sheets 20, 20.1. The apparatus 24 comprises a frame having side members 26 between which a nip roller 28, a series of ghie application rollers 30 and a transfer roller 32 are rotatable. The roller 32 is carried by a shaft which is driven by a motor 34, the drive being transferred to the shafts carrying the other rollers by meshing sprockets 36, 38 and 40. The roller 32 passes through a tray 42 containing liquid ghie and transfers the ghie to the individual ghie application rollers 30.
The individual sheets 20, 20.1 are fed successively into the nip between the nip roller 28 and the glue application rollers 30, With each alternate sheet being off-set laterally from the intermediate sheets by half the spacing of the glue application rollers. It will be understood that the ghie application rollers accordingly apply the parallel glue strips 22, 22.1 to the sheets in accordance with the format described above.
After passage through the glue application apparatus 24, the sheets 20, 20.1 are aligned and stacked vertically one on top of the other, with the glue on each sheet adhering firmly to the neighbouring sheet. When a sufficiently high stack of sheets 20, 20.1 has been formed, a guillotine is used to trim off a narrow portion from an edge of the stack which is transverse to the glue strips.
The trimmed off edge portion can then be expanded to form a rectangular expanse of core 14. The individual cells of the core have generally a hexagonal shape as illustrated, but it will be appreciated that the actual shape in practice will be determined inter alia by the width of the glue strips, i.e. the width of the glue application rollers 30.
The glue which is used in the process described above is typically a modified polyvinyl acetate resin emulsion, a suitable example being QAR I 73A available from Qualichem (Proprietary) Limited.
After manufacture of the core 14 in the manner described above, it is laminated, using the same glue as described above, onto the outer ply to form a rectangular sheet 10. The rectangular cores may be laminated individually between correspondingly dimensioned outer pry, either with the aid of a suitable laminating apparatus or by hand.
It is also possible to form single face packaging material 10 continuously using an apparatus of the type illustrated dkgramrnaticalry in Figure 4. Here, a great number of individual rectangular expanses of core material are attached to one another end to end by adhesive, typically that described above, to form a long length of core material.
This length is folded fanf old style into a magazine type dispenser 63 or crate supported by a tensioning arm 42. The continuous length of core material, designated 33 in Figure 4, is withdrawn over a serious of rollers 46 continuously to a laminating station 48. Simultaneously, outer ply material is withdrawn continuously from upper or lower drums 50, 50.1 to the laminating station. At the laminating station, the upper or lowerply, designated 52 and 52.1 are brought into contact with, and laminated to, the core material 44. In the lamination step, a ghie such as that described above is applied to either surface of the core or to one of the plies being withdrawn. The ply is thereafter pressed against the core by rollers 54. The continuos sheet material which is produced is then fed over a conveyor 56 to a cutting and stacking station. In the station 58, the sheet is either cut to length by a guillotine type mechanism 60 or wound up in a continuous roll on a reel material take- up station 61 to an ideal length of 70meters.
It is envisaged that individual cores 14 could be laminated onto appropriately dimensioned outer ply in an automated process. Core and outer ply could, for instance, be stored in respective magazines and withdrawn for individual lamination of each core between either outer ply material 50 or 50.1.
It is submitted that sheets 10 produced by the method described above will be eminently suitable for use in packaging, specifically in multi planar, pliable packaging applications. In one major application, the sheets may be pre treated such coatings, hardeners, printed etc and known art to form material which can subsequently be easily folded to form wrappings or containers to be used for packaging purposes.
Sheets 10 can also be used as support, impact resistant, filler material in packaging and other applications.
It is an advantage of the invention as specifically described, that it provides hghtweight laminated single face sheet material eminently suitable for packaging while other applications are obviously not excluded.

Claims

(8) CLAIMS
( 1) Laminated hghtweight pliable packaging like single face sheet material at least employable for protective and packaging purposes comprising, a non -solid strengthening core of lightweight material providing the desired strengthening characteristic mainly because of its patterning, affixed to a sheet of hghtweight outer ply material of a substance prone to bendable defamation with the core extending according to a suitable pattern to strengthen the sheet materia resulting in an item of laminated sheet material in conjunction with the core, folding in all directions at least substantially with respect to one another.
(2) Laminated packaging hke single face material as claimed in claim I in which the core at least mainly provides a plurality of adjacently located open-ended cells separated by walls along the edges to which a sheet of outer ply material is affixed to the limited height core.
(3) Laminated packaging hke single face material as claimed in claim 2 in which the cells of the core are formed by strips of fluting type material.
(4) Laminated packaging hke single face material as claimed in claim 3 in which the core is of lining material is in the order of 125 grams per square meter density.
(5) Laminated packaging like single face material as claimed in any one of claims 2 to 4 in which the limited height core extends according to a regular pattern.
(6) Laminated packaging hke single face material as claimed in any one of claims 2 to 5 in 35 which the core provides a plurality of multi-sided cells.
(7) Laminated packaging hke single face material as claimed in claim 6 in which the core is manufactured from an appropriate plurality of core de ining hghtweight sheets of pliable material that permits expandable deformation at least when severed into strips with the core defining hghtweight sheets being secured to one another along staggered parallel securing zones as regards adjacent sheets into a stack from which an expanded end slice forms the core of which the height is thus defined by the limited thickness of such slice.
(8) Laminated packaging hke single face material as claimed in claim 6 or claim 7 in which the cells of the core present at least generally the same end profile.
(9) Laminated packaging hke single face material as claimed in any one of claims 6 to 8 in which the height of the cells of core is limited by the extent of its pliability and hexagonally shaped.
(10) Laminated packaging hke single face material as claimed in any one of the preceding claims in which the hghtweight core is affixed to a single opposing sheet of outer ply hghtweight material by being adhesively secured thereto.
( 11) Laminated packaging hke single face material as claimed in any one of the preceding claims in which the sheet of outer ply material is in the form of Kraft fluting material.
( 12) Laminated packaging hke single face material as claimed in claim 11 in which the sheets of outer ply material has a density in the order of 125grams per square meter.
( 13) I_-arninated packaging hke single face material as claimed in any one of the preceding claims which has a thickness of between one and ten mm.
( 14) Laminated packaging hke single face material as claimed in claim 13 which has a 15 thickness of between two and five mm.
(15) Laminated packaging hke single face material as claimed in any one of the preceding claims which has an overall density in the order of 225 grams per square meter.
(16) Laminated packaging like single face material as claimed in claim 15 which has an overall density of between 250 and 280 grams per square meter.
( 17) Laminated packaging like single face material as claimed in any one of the preceding claims which is of a thickness of between three andfour mm as often used for packaging type packaging product.
( 18) A method of manufacturing laminated packaging hke single face material at least employable for packaging purposes comprising affixing a sheet of a substance prone to bendable deformation by way of a sheet of hghtweight outer ply material to a pre-maπufactured core of non-solid hghtweight material that extends according to a suitable pattern to strengthen the sheet of outer ply material, once
laminated into an item of sheet material in conjunction with the core, allowing folding in all planar directions also extending at least substantially with respect to one another.
(19) Amethod as claimed in claim 18 in which the a sheet of outerply material is affixed to the core as at least mainly providing a plurality of adjacently located open-ended cells separated by walls, along trie edges of the walls in a single ply configuration.
(20) A method as claimed in claim 19 in which the cells of the core, to which the sheets of outerply material become affixed, are formed by strips of f luting type material.
(21) Amethod as claimed in claim 19 or claim 20 in which the multi sided core, to which the sheets of outerply material become affixed, is provided by a material having a density of in the order of 112 grams per square meter.
(22) Amethod as claimed in any one of claims 19 to 21 in which the core, to which the sheets of outerply material become affixed, extends according to a regular pattern.
(23) A method as claimed in any one of claims 19 to 22 which involves pre-πiaπufacturing the hghtweight core from an appropriate plurality of rectangular core clef ining sheets of firm material that are def ormable at least when severed into strips with the core providing sheets being aligπably secured to one another into a stack along staggered parallel securing zones from which stack severing of an end shce, as expanded, forms the core of which the height is thus defined by the thickness of the end shce.
(24) A method as claimed in claim 23 in which the thickness of the end shce as sliced from the stack is between one and ten mm.
(25) A method as claimed in claim 24 in which the thickness of the end shce as shced from the stack is between two and five mm.
(26) A method as claimed in any one of claims 23 to 25 in which pre-maπufacturing of the core involves adhesively securing the core defining sheets to one another by way of ghie strips extending off-set with respect to one another along the appropriate surfaces of the core defining sheets.
(27) A method as claimed in any one of claims 23 to 26 which is performed on a continuous basis involving the continuous lamination of a pre-manufactured core supply as feedingly held, and as formed from end-on inter-connected en dshces, between a sheet of outerply material, as appropriately supplied, and cutting the laminated product into desired lengths thereby forming sheets or continuous rolls of single face material.
(28) A method as claimed in claim 27 in which the core supply is fan fold stacked fashion feedingly held.
(29) A method as claimed in claim 28 which involves passing the core material along an advancing roller that performs at least the function of promoting its expansion
(30) A method as claimed in any one of claims 27 to 29 in which the sheets of outer ply material is supplied on a continuous basis.
(31) A method as claimed in any one of claims 18 to 30 in which the core, to which a sheet of outerply material becomes affixed, provides a plurality of multi-sided cells.
(32) A method as claimed in claim 31 in which the core, to which the sheet of outerply material becomes affixed, presents cells of at least generally the same end profile.
(33) A method as claimed in claim 31 or claim 32 in which the core, to which the sheet of outer ply material becomes affixed, presents hexagonally shaped cells.
(34) A method as claimed in any one of claims 18 to 33 in which the sheets of outerply material is affixed to the core by being adhesively secured thereto.
(35) A method as claimed in any one of claims 18 to 34 in which the sheet of outerply material, as becoming affixed to the core, is in the form of Kraft lining or fluting material.
(36) Amethod as claimed in claim 35 in which the sheet of outerply material, as becoming affixed to the core, has a density of in the order of 125 grams per square meter.
(37) A method as claimed in any one of claims 18 to 36 in which the parameters of the outer sheet material and the core are selected to enable the manufacturing of laminated sheet single face material employable for forming pliable, multi planar folding packaging product.
(38) Equrprnent for continuously manufacturing single face sheet material at least employable for packaging purposes comprising
core supply and outer sheet feeding means for continuously and in a synchronised way supplying core and outer sheet providing material for lamination and severing or reeling into laminated material as claimed in any one of claims I to 17, a laminating station in which such core and outer sheet providing material are secured to one another, and a cutting and storing facihty in which such laminated product is cut into desired lengths thus providing sheets or reels of laminated packaging hke material that is disposed for storage or direct further use, the core supply feeding means making provision for feeding such core as fan fold fashion held via an expanding and nip roller layout to the laminating station to achieve the desired matching between such core and such outer sheet providing material.
(39) Equipment as claimed in claim 38 which incorporates an outer sheet providing material pre-processing facihty in which such material is conventionally processed prior to lamination.
(40) Equipment as claimed in claim 38 or claim 39 which includes a rotary die cutting facility by mean of which the laminated sheets are desirably individual sheet fashion cut for further use.
(41) Equipment for continuously manufacturing sheet material substantially as described with reference to figure 4 of the drawings.
(42) Equipment stand for providing material take up of the continuous packaging material to lengths of ideally 70meters.
PCT/ZA2000/000183 1999-10-12 2000-10-11 Single face packaging material WO2001026889A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU11072/01A AU1107201A (en) 1999-10-12 2000-10-11 Single face packaging material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA996427 1999-10-12
ZA99/6427 1999-10-12

Publications (1)

Publication Number Publication Date
WO2001026889A1 true WO2001026889A1 (en) 2001-04-19

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WO (1) WO2001026889A1 (en)

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US9649822B2 (en) 2009-12-22 2017-05-16 Cascades Canada Ulc Flexible cellulosic fiber-based honeycomb material
US11351750B2 (en) * 2017-04-10 2022-06-07 Ranpak Corp. Expandable slit-sheet stock material, dunnage conversion system and method for expanding
US11383906B2 (en) * 2017-06-26 2022-07-12 David P. Goodrich Extensible paper and its use in the production of expanded slit packaging wrap and void fill products
US11401090B2 (en) * 2017-06-26 2022-08-02 David Paul Goodrich Expanded slit sheet cushioning products with novel slit pattern and paper properties
US11440305B2 (en) * 2017-06-26 2022-09-13 David Paul Goodrich Embossed paper in combination with paper cushioning for shipping envelopes
US11702261B2 (en) 2017-06-26 2023-07-18 David Paul Goodrich Expanded slit sheet cushioning products with novel reduced dimension slit patterns
US11834240B2 (en) 2013-09-06 2023-12-05 David P. Goodrich Expanded slit sheet cushioning products with novel alternating expansion patterns

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US9649822B2 (en) 2009-12-22 2017-05-16 Cascades Canada Ulc Flexible cellulosic fiber-based honeycomb material
US9649823B2 (en) 2009-12-22 2017-05-16 Cascades Canada Ulc Flexible cellulosic fiber-based honeycomb material
US8715806B2 (en) 2010-10-19 2014-05-06 Hexacomb Corporation Formable protector
US11834240B2 (en) 2013-09-06 2023-12-05 David P. Goodrich Expanded slit sheet cushioning products with novel alternating expansion patterns
US11351750B2 (en) * 2017-04-10 2022-06-07 Ranpak Corp. Expandable slit-sheet stock material, dunnage conversion system and method for expanding
US11383906B2 (en) * 2017-06-26 2022-07-12 David P. Goodrich Extensible paper and its use in the production of expanded slit packaging wrap and void fill products
US11401090B2 (en) * 2017-06-26 2022-08-02 David Paul Goodrich Expanded slit sheet cushioning products with novel slit pattern and paper properties
US11440305B2 (en) * 2017-06-26 2022-09-13 David Paul Goodrich Embossed paper in combination with paper cushioning for shipping envelopes
US11697536B2 (en) 2017-06-26 2023-07-11 David Paul Goodrich Expanded slit sheet cushioning products with novel slit pattern and paper properties
US11702261B2 (en) 2017-06-26 2023-07-18 David Paul Goodrich Expanded slit sheet cushioning products with novel reduced dimension slit patterns
US11760548B2 (en) 2017-06-26 2023-09-19 David P. Goodrich Extensible paper and its use in the production of expanded slit packaging wrap and void fill products

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