WO2007068033A1 - Anti-skid sheet - Google Patents

Anti-skid sheet Download PDF

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Publication number
WO2007068033A1
WO2007068033A1 PCT/AU2006/001871 AU2006001871W WO2007068033A1 WO 2007068033 A1 WO2007068033 A1 WO 2007068033A1 AU 2006001871 W AU2006001871 W AU 2006001871W WO 2007068033 A1 WO2007068033 A1 WO 2007068033A1
Authority
WO
WIPO (PCT)
Prior art keywords
around
skid
layer
further step
cardboard
Prior art date
Application number
PCT/AU2006/001871
Other languages
French (fr)
Inventor
Brian Fearnley
Original Assignee
Dalton Packaging Pty Limited
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
Priority claimed from AU2005906973A external-priority patent/AU2005906973A0/en
Application filed by Dalton Packaging Pty Limited filed Critical Dalton Packaging Pty Limited
Publication of WO2007068033A1 publication Critical patent/WO2007068033A1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/84—Paper comprising more than one coating on both sides of the substrate
    • 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
    • B65D57/00—Internal frames or supports for flexible articles, e.g. stiffeners; Separators for articles packaged in stacks or groups, e.g. for preventing adhesion of sticky articles
    • B65D57/002—Separators for articles packaged in stacks or groups, e.g. stacked or nested
    • B65D57/003—Separators for articles packaged in stacks or groups, e.g. stacked or nested for horizontally placed articles, i.e. for stacked or nested articles
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • 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
    • B65D2571/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00006—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D2571/00043—Intermediate plates or the like
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
    • C09J2301/162—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer the carrier being a laminate constituted by plastic layers only
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/20—Presence of organic materials
    • C09J2400/28—Presence of paper
    • C09J2400/283—Presence of paper in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2433/00—Presence of (meth)acrylic polymer
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper

Definitions

  • the present invention relates to an anti-skid sheet.
  • the invention has been developed primarily for use as a packaging tape for cardboard cartons and will be described hereinafter with reference to this application. However, it will be appreciated that the invention is not limited to this particular application, and may also be used as an adhesive label.
  • Known packaging tapes typically comprise a substrate having an adhesive applied to one side.
  • the other side of the tape is typically quite smooth and exhibits low frictional properties.
  • the stack of cartons is typically wrapped in between around 13 and 20 layers of plastic pallet wrap to further stabilise the stack.
  • the pallet wrap is not biodegradable and not easily recyclable and often ends up in landfill, which is clearly not environmentally friendly.
  • the invention provides an anti-skid sheet comprising: a substrate layer; a non-adhesive, non-abrasive, anti-skid layer bonded to one side of the substrate layer; and an adhesive layer bonded to the other side of the substrate layer.
  • the anti-skid layer has a coefficient of static friction with cardboard of greater than around 0.5 ⁇ . More preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around 2 ⁇ . In a preferred form, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around 1.0 ⁇ , and more preferably around 0.75 ⁇ at an ambient temperature of around 23 0 C. Preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around 1.5 ⁇ , and more preferably around 1.2 ⁇ at an ambient temperature of around 38 0 C and a relative humidity of around 95%.
  • the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around 1.0 ⁇ , and more preferably around 0.8 ⁇ at an ambient temperature of around - 20°C.
  • the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around 1.5 ⁇ , and more preferably around 1.3 ⁇ at an ambient temperature of around 23°C and when the anti-skid layer has a wet surface.
  • the anti-skid layer has a coefficient of dynamic friction with cardboard of greater than around 0.5 ⁇ . More preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around 2 ⁇ . In a preferred form, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around 1.0 ⁇ , and more preferably around 0.55 ⁇ at an ambient temperature of around 23 0 C. Preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around l.O ⁇ , and more preferably around 0.7 ⁇ at an ambient temperature of around 38°C and a relative humidity of around 95%.
  • the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around 1.0 ⁇ , and more preferably around 0.6 ⁇ at an ambient temperature of around -2O 0 C.
  • the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around 1.5 ⁇ , and more preferably around l.O ⁇ at an ambient temperature of around 23 °C and when the anti-skid layer has a wet surface.
  • the anti-skid layer is of substantially homogeneous composition. More preferably, the anti-skid layer has a Moh's hardness of less than around 3, and more preferably, of less than around 2.5.
  • the anti-skid layer has a Shore A hardness of less than around 70, and more preferably of less than around 30.
  • the anti- skid layer has a weight of between around 6 and around lOgsm. More preferably, the anti-skid layer is formed from a copolymer acrylic emulsion.
  • the anti-skid layer is recyclable using caustic soda pulp reclamation.
  • the anti-skid layer is adapted to receive flexographic print.
  • the substrate layer is formed from a cellulose-based material. More preferably, the substrate layer is paper. However, in alternative embodiments, the substrate layer is formed from a polymer, such as polypropylene.
  • the adhesive layer is formed from permanent acrylic.
  • a backing sheet is removably applied to the adhesive layer.
  • the anti-skid sheet is in the form of a roll of tape.
  • the anti-skid sheet is in the form of an adhesive label.
  • the invention provides a method of manufacturing an anti-skid sheet, said method including the steps of: providing a substrate layer; applying an adhesive layer to one side of the substrate layer; applying a non-adhesive, non-abrasive, anti-skid layer to the other side of the substrate layer.
  • anti-skid properties of the anti-skid layer are activated by heating the anti-skid layer to a predetermined temperature. More preferably, the predetermined temperature is around 12O 0 C.
  • the anti-skid layer has a coefficient of static friction with cardboard of greater than around 0.5 ⁇ . More preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around 2 ⁇ . In a preferred form, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around 1.O ⁇ , and more preferably around 0.75 ⁇ at an ambient temperature of around 23 0 C. Preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around 1.5 ⁇ , and more preferably around 1.2 ⁇ at an ambient temperature of around 38 0 C and a relative humidity of around 95%.
  • the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ . and around 1.0 ⁇ , and more preferably around 0.8 ⁇ at an ambient temperature of around - 20°C.
  • the anti-skid layer has a coefficient of static friction with cardboard of - A - between around 0.5 ⁇ and around 1.5 ⁇ , and more preferably around 1.3 ⁇ at an ambient temperature of around 23 0 C and when the anti-skid layer has a wet surface.
  • the anti-skid layer has a coefficient of dynamic friction with cardboard of greater than around 0.5 ⁇ . More preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around 2 ⁇ . In a preferred form, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around l.O ⁇ , and more preferably around 0.55 ⁇ at an ambient temperature of around 23 0 C. Preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around l.O ⁇ , and more preferably around 0.7 ⁇ at an ambient temperature of around 38°C and arelative humidity of around 95%.
  • the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around l.O ⁇ , and more preferably around 0.6 ⁇ at an ambient temperature of around -20°C.
  • the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around 1.5 ⁇ , and more preferably around 1.0 ⁇ at an ambient temperature of around 23 0 C and when the anti-skid layer has a wet surface.
  • the anti-skid layer is of substantially homogeneous composition. More preferably, the anti-skid layer has a Moh's hardness of less than around 3, and more preferably, of less than around 2.5. Preferably, the anti-skid layer has a Shore A hardness of less than around 70, and more preferably of less than around 30. Preferably, the antiskid layer has a weight of between around 6 and around lOgsm. More preferably, the anti-skid layer is formed from a copolymer acrylic emulsion.
  • the anti-skid layer is recyclable using caustic soda pulp reclamation.
  • the anti-skid layer is adapted to receive flexographic print.
  • the substrate layer is formed from a cellulose-based material. More preferably, the substrate layer is paper. However, in alternative embodiments, the substrate layer is formed from a polymer, such as polypropylene.
  • the adhesive layer is formed from permanent acrylic.
  • a backing sheet is removably applied to the adhesive layer.
  • the anti-skid sheet is provided in the form of a roll of tape.
  • the anti-skid sheet is provided in the form of an adhesive label.
  • the invention provides a method of stacking cartons, said method comprising the steps of: applying an anti-skid tape to the cartons, said anti-skid tape having: a substrate layer, a non-adhesive, non-abrasive, anti-skid layer bonded to one side of the substrate layer, an adhesive layer bonded to the other side of the substrate layer; stacking the cartons such that the anti-skid tape is sandwiched between the cartons to reduce relative translation of the cartons.
  • the anti-skid layer has a coefficient of static friction with cardboard of greater than around 0.5 ⁇ . More preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around 2 ⁇ .
  • the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around l.O ⁇ , and more preferably around 0.75/1 at an ambient temperature of around 23 0 C.
  • the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around 1.5 ⁇ , and more preferably around 1.2 ⁇ at an ambient temperature of around 38°C and a relative humidity of around 95%.
  • the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around l.O ⁇ , and more preferably around 0.8 ⁇ at an ambient temperature of around - 20°C.
  • the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5 ⁇ and around 1.5 ⁇ , and more preferably around 1.3 ⁇ at an ambient temperature of around 23 0 C and when the anti-skid layer has a wet surface.
  • the anti-skid layer has a coefficient of dynamic friction with cardboard of greater than around 0.5 ⁇ . More preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around 2 ⁇ . In a preferred form, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around l.O ⁇ , and more preferably around 0.55 ⁇ at an ambient temperature of around 23 0 C. Preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around l.O ⁇ , and more preferably around 0.7 ⁇ at an ambient temperature of around 38°C and a relative humidity of around 95%.
  • the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around l.O ⁇ , and more preferably around 0.6 ⁇ at an ambient temperature of around -20 0 C.
  • the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5 ⁇ and around 1.5 ⁇ , and more preferably around l.O ⁇ at an ambient temperature of around 23 0 C and when the anti-skid layer has a wet surface.
  • the anti-skid layer is of substantially homogeneous composition. More preferably, the anti-skid layer has a Moh's hardness of less than around 3, and more preferably, of less than around 2.5. Preferably, the anti-skid layer has a Shore A hardness of less than around 70, and more preferably of less than around 30. Preferably, the antiskid layer has a weight of between around 6 and around lOgsm. More preferably, the anti-skid layer is formed from a copolymer acrylic emulsion.
  • the anti-skid layer is recyclable using caustic soda pulp reclamation.
  • the anti-skid layer is adapted to receive flexographic print.
  • the substrate layer is formed from a cellulose-based material. More preferably, the substrate layer is paper. However, in alternative embodiments, the substrate layer is formed from a polymer, such as polypropylene.
  • the adhesive layer is formed from permanent acrylic.
  • a backing sheet is removably applied to the adhesive layer.
  • the anti-skid sheet is in the form of a roll of tape.
  • the anti-skid sheet is in the form of an adhesive label.
  • Figure 1 is a plan view of a preferred embodiment of anti-skid sheet according to the invention.
  • Figure 2 is a cross-sectional view taken along line 2-2 of Figure 1.
  • an anti-skid sheet 1 comprising a substrate layer 2, anon-adhesive, non-abrasive, anti-skid layer 3 bonded to one side of the substrate layer 2, and an adhesive layer 4 bonded to the other side of the substrate layer 2.
  • the anti skid layer 3 When tested according to ASTM standard D4521, the anti skid layer 3 exhibits the following frictional characteristics with cardboard.
  • the anti-skid layer 3 has a weight of between around 6 and around lOgsm and is formed from a copolymer acrylic emulsion.
  • the anti-skid layer 3 is of substantially homogeneous composition.
  • the anti-skid properties of the anti-skid layer 3 are activated by heating the layer to a temperature of around 120 degrees Celsius.
  • the anti-skid layer 3 has a Moh's hardness of less than around 2.5 and a Shore A hardness of less than around 30, and accordingly, the anti-skid layer 3 will not cause undue wear to paper.
  • the antiskid layer 3 is adapted to receive flexographic print and is recyclable using caustic soda pulp reclamation.
  • the substrate layer 2 is formed from a cellulose-based material, such as paper. However, in alternative embodiments, the substrate layer 2 is formed from a polymer, such as polypropylene.
  • the adhesive layer 4 is formed from permanent acrylic.
  • a backing sheet (not shown) is removably applied to the adhesive layer 4.
  • the anti-skid sheet 1 can be manufactured in a variety of forms, such as a roll of anti-skid tape or an adhesive label.
  • the anti skid sheet 1 is particularly useful for applying to the surface of cardboard cartons (not shown), either as a packaging tape for closing the cartons or as an adhesive label for marking the cartons.
  • Cartons to which the sheet 1 is applied are less prone to relative displacement when stacked on pallets, as the anti skid layer 3 provides increased friction between adjacent cartons by virtue of the anti-skid layer 3 being sandwiched between the adjacent cartons.
  • use of the anti-skid sheet 1 negates the need to use skid inhibiting sheets between adjacent cartons, thereby reducing labour costs associated with stacking cartons.
  • the packaging tape form of the anti-skid sheet 1 serves the dual purpose of sealing the cartons and reducing slippage between the stacked cartons, which reduces inventories, as it is not longer necessary to provide both carton sealing tape and skid inhibiting sheets.
  • Use of the anti-skid sheet 1 also substantially reduces the number of layers of pallet wrapping film that are required around the stacked cartons to stabilise the loaded pallet.
  • the anti-skid sheet 1 can be applied to the cartons within the production process.
  • the label can be printed with product data, thus providing the dual functions normally provided by a standard adhesive label and skid inhibiting sheets.
  • the anti-skid label can be produced in various sizes to provide the correct amount of skid resistance depending on the weight and size of the cartons.
  • the label form also substantially reduces the amount of pallet wrapping film required to stabilise loads.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)

Abstract

An anti-skid sheet (1) is disclosed. The sheet (1) comprises a substrate layer (2), a non- adhesive, non-abrasive, anti-skid layer (3) bonded to one side of the substrate layer (2), and an adhesive layer (4) bonded to the other side of the substrate layer (2).

Description

ANTI-SKID SHEET
Technical Field
The present invention relates to an anti-skid sheet. The invention has been developed primarily for use as a packaging tape for cardboard cartons and will be described hereinafter with reference to this application. However, it will be appreciated that the invention is not limited to this particular application, and may also be used as an adhesive label.
Background of the Invention
Known packaging tapes typically comprise a substrate having an adhesive applied to one side. The other side of the tape is typically quite smooth and exhibits low frictional properties.
When cardboard cartons are stacked on pallets, it is known to place skid inhibiting sheets between the cartons to reduce the occurrence of relative translational movement of the stacked cartons. It is also known to apply hot-melt glue to the contact surfaces between the cartons. However, the machines used to apply the glue are prone to clogging, and moreover, exposure to the hot glue represents a health hazard. Also, the glue tends to cause adjacent cartons to adhere together, which results in damage to the cartons when they are later separated.
The stack of cartons is typically wrapped in between around 13 and 20 layers of plastic pallet wrap to further stabilise the stack. The pallet wrap is not biodegradable and not easily recyclable and often ends up in landfill, which is clearly not environmentally friendly.
Object of the Invention
It is the object of the present invention to overcome or substantially ameliorate at least one of the disadvantages of the prior art.
Summary of the Invention
Accordingly, in a first aspect, the invention provides an anti-skid sheet comprising: a substrate layer; a non-adhesive, non-abrasive, anti-skid layer bonded to one side of the substrate layer; and an adhesive layer bonded to the other side of the substrate layer.
Preferably, the anti-skid layer has a coefficient of static friction with cardboard of greater than around 0.5μ. More preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 2μ. In a preferred form, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 1.0μ, and more preferably around 0.75μ at an ambient temperature of around 230C. Preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 1.5μ, and more preferably around 1.2μ at an ambient temperature of around 380C and a relative humidity of around 95%. More preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 1.0μ, and more preferably around 0.8μ at an ambient temperature of around - 20°C. Preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 1.5μ, and more preferably around 1.3μ at an ambient temperature of around 23°C and when the anti-skid layer has a wet surface.
Preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of greater than around 0.5μ. More preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around 2μ. In a preferred form, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around 1.0μ, and more preferably around 0.55μ at an ambient temperature of around 230C. Preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ, and more preferably around 0.7μ at an ambient temperature of around 38°C and a relative humidity of around 95%. More preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around 1.0μ, and more preferably around 0.6μ at an ambient temperature of around -2O0C. Preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around 1.5μ, and more preferably around l.Oμ at an ambient temperature of around 23 °C and when the anti-skid layer has a wet surface. Preferably, the anti-skid layer is of substantially homogeneous composition. More preferably, the anti-skid layer has a Moh's hardness of less than around 3, and more preferably, of less than around 2.5. Preferably, the anti-skid layer has a Shore A hardness of less than around 70, and more preferably of less than around 30. Preferably, the anti- skid layer has a weight of between around 6 and around lOgsm. More preferably, the anti-skid layer is formed from a copolymer acrylic emulsion.
Preferably, the anti-skid layer is recyclable using caustic soda pulp reclamation. Preferably, the anti-skid layer is adapted to receive flexographic print. Preferably, the substrate layer is formed from a cellulose-based material. More preferably, the substrate layer is paper. However, in alternative embodiments, the substrate layer is formed from a polymer, such as polypropylene.
Preferably, the adhesive layer is formed from permanent acrylic. Preferably, a backing sheet is removably applied to the adhesive layer. Preferably, the anti-skid sheet is in the form of a roll of tape. Alternatively, the anti-skid sheet is in the form of an adhesive label.
In a second aspect, the invention provides a method of manufacturing an anti-skid sheet, said method including the steps of: providing a substrate layer; applying an adhesive layer to one side of the substrate layer; applying a non-adhesive, non-abrasive, anti-skid layer to the other side of the substrate layer.
Preferably, anti-skid properties of the anti-skid layer are activated by heating the anti-skid layer to a predetermined temperature. More preferably, the predetermined temperature is around 12O0C.
Preferably, the anti-skid layer has a coefficient of static friction with cardboard of greater than around 0.5μ. More preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 2μ. In a preferred form, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 1.Oμ, and more preferably around 0.75μ at an ambient temperature of around 230C. Preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 1.5μ, and more preferably around 1.2μ at an ambient temperature of around 380C and a relative humidity of around 95%. More preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ. and around 1.0μ, and more preferably around 0.8μ at an ambient temperature of around - 20°C. Preferably, the anti-skid layer has a coefficient of static friction with cardboard of - A - between around 0.5μ and around 1.5μ, and more preferably around 1.3μ at an ambient temperature of around 230C and when the anti-skid layer has a wet surface.
Preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of greater than around 0.5μ. More preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around 2μ. In a preferred form, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ, and more preferably around 0.55μ at an ambient temperature of around 230C. Preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ, and more preferably around 0.7μ at an ambient temperature of around 38°C and arelative humidity of around 95%. More preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ, and more preferably around 0.6μ at an ambient temperature of around -20°C. Preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around 1.5μ, and more preferably around 1.0μ at an ambient temperature of around 230C and when the anti-skid layer has a wet surface.
Preferably, the anti-skid layer is of substantially homogeneous composition. More preferably, the anti-skid layer has a Moh's hardness of less than around 3, and more preferably, of less than around 2.5. Preferably, the anti-skid layer has a Shore A hardness of less than around 70, and more preferably of less than around 30. Preferably, the antiskid layer has a weight of between around 6 and around lOgsm. More preferably, the anti-skid layer is formed from a copolymer acrylic emulsion.
Preferably, the anti-skid layer is recyclable using caustic soda pulp reclamation. Preferably, the anti-skid layer is adapted to receive flexographic print. Preferably, the substrate layer is formed from a cellulose-based material. More preferably, the substrate layer is paper. However, in alternative embodiments, the substrate layer is formed from a polymer, such as polypropylene.
Preferably, the adhesive layer is formed from permanent acrylic. Preferably, a backing sheet is removably applied to the adhesive layer. Preferably, the anti-skid sheet is provided in the form of a roll of tape. Alternatively, the anti-skid sheet is provided in the form of an adhesive label. In a third aspect, the invention provides a method of stacking cartons, said method comprising the steps of: applying an anti-skid tape to the cartons, said anti-skid tape having: a substrate layer, a non-adhesive, non-abrasive, anti-skid layer bonded to one side of the substrate layer, an adhesive layer bonded to the other side of the substrate layer; stacking the cartons such that the anti-skid tape is sandwiched between the cartons to reduce relative translation of the cartons. Preferably, the anti-skid layer has a coefficient of static friction with cardboard of greater than around 0.5μ. More preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 2μ. In a preferred form, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around l.Oμ, and more preferably around 0.75/1 at an ambient temperature of around 230C. Preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 1.5μ, and more preferably around 1.2μ at an ambient temperature of around 38°C and a relative humidity of around 95%. More preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around l.Oμ, and more preferably around 0.8μ at an ambient temperature of around - 20°C. Preferably, the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 1.5μ, and more preferably around 1.3μ at an ambient temperature of around 230C and when the anti-skid layer has a wet surface.
Preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of greater than around 0.5μ. More preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around 2μ. In a preferred form, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ, and more preferably around 0.55μ at an ambient temperature of around 230C. Preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ, and more preferably around 0.7μ at an ambient temperature of around 38°C and a relative humidity of around 95%. More preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ, and more preferably around 0.6μ at an ambient temperature of around -200C. Preferably, the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around 1.5μ, and more preferably around l.Oμ at an ambient temperature of around 230C and when the anti-skid layer has a wet surface.
Preferably, the anti-skid layer is of substantially homogeneous composition. More preferably, the anti-skid layer has a Moh's hardness of less than around 3, and more preferably, of less than around 2.5. Preferably, the anti-skid layer has a Shore A hardness of less than around 70, and more preferably of less than around 30. Preferably, the antiskid layer has a weight of between around 6 and around lOgsm. More preferably, the anti-skid layer is formed from a copolymer acrylic emulsion.
Preferably, the anti-skid layer is recyclable using caustic soda pulp reclamation. Preferably, the anti-skid layer is adapted to receive flexographic print.
Preferably, the substrate layer is formed from a cellulose-based material. More preferably, the substrate layer is paper. However, in alternative embodiments, the substrate layer is formed from a polymer, such as polypropylene.
Preferably, the adhesive layer is formed from permanent acrylic. Preferably, a backing sheet is removably applied to the adhesive layer.
Preferably, the anti-skid sheet is in the form of a roll of tape. Alternatively, the anti-skid sheet is in the form of an adhesive label.
Brief Description of the Drawings
A preferred form of the present invention will now be described, by way of example only, with reference to the accompanying drawings, wherein:
Figure 1 is a plan view of a preferred embodiment of anti-skid sheet according to the invention; and
Figure 2 is a cross-sectional view taken along line 2-2 of Figure 1.
Detailed Description of the Preferred Embodiments Referring to the drawings, there is provided an anti-skid sheet 1 comprising a substrate layer 2, anon-adhesive, non-abrasive, anti-skid layer 3 bonded to one side of the substrate layer 2, and an adhesive layer 4 bonded to the other side of the substrate layer 2.
When tested according to ASTM standard D4521, the anti skid layer 3 exhibits the following frictional characteristics with cardboard.
Figure imgf000008_0001
* though the force is greatest for the wet condition, the paper also begins tearing and then friction properties drop
The anti-skid layer 3 has a weight of between around 6 and around lOgsm and is formed from a copolymer acrylic emulsion. The anti-skid layer 3 is of substantially homogeneous composition. The anti-skid properties of the anti-skid layer 3 are activated by heating the layer to a temperature of around 120 degrees Celsius. The anti-skid layer 3 has a Moh's hardness of less than around 2.5 and a Shore A hardness of less than around 30, and accordingly, the anti-skid layer 3 will not cause undue wear to paper. The antiskid layer 3 is adapted to receive flexographic print and is recyclable using caustic soda pulp reclamation.
The substrate layer 2 is formed from a cellulose-based material, such as paper. However, in alternative embodiments, the substrate layer 2 is formed from a polymer, such as polypropylene.
The adhesive layer 4 is formed from permanent acrylic. A backing sheet (not shown) is removably applied to the adhesive layer 4.
Depending upon the particular application, the anti-skid sheet 1 can be manufactured in a variety of forms, such as a roll of anti-skid tape or an adhesive label.
The anti skid sheet 1 is particularly useful for applying to the surface of cardboard cartons (not shown), either as a packaging tape for closing the cartons or as an adhesive label for marking the cartons. Cartons to which the sheet 1 is applied are less prone to relative displacement when stacked on pallets, as the anti skid layer 3 provides increased friction between adjacent cartons by virtue of the anti-skid layer 3 being sandwiched between the adjacent cartons. Moreover, use of the anti-skid sheet 1 negates the need to use skid inhibiting sheets between adjacent cartons, thereby reducing labour costs associated with stacking cartons. Also, the packaging tape form of the anti-skid sheet 1 serves the dual purpose of sealing the cartons and reducing slippage between the stacked cartons, which reduces inventories, as it is not longer necessary to provide both carton sealing tape and skid inhibiting sheets. Use of the anti-skid sheet 1 also substantially reduces the number of layers of pallet wrapping film that are required around the stacked cartons to stabilise the loaded pallet. In label form, the anti-skid sheet 1 can be applied to the cartons within the production process. The label can be printed with product data, thus providing the dual functions normally provided by a standard adhesive label and skid inhibiting sheets. The anti-skid label can be produced in various sizes to provide the correct amount of skid resistance depending on the weight and size of the cartons. As with the packaging tape form of the anti-skid sheet 1, the label form also substantially reduces the amount of pallet wrapping film required to stabilise loads.
While the invention has been described with reference to specific embodiments, it will be appreciated by those skilled in the art that it may also be embodied in many other forms.

Claims

CLAIMS:
1. An anti-skid sheet comprising: a substrate layer; a non-adhesive, non-abrasive, anti-skid layer bonded to one side of the substrate layer; and an adhesive layer bonded to the other side of the substrate layer.
2. An anti-skid sheet according to claim 1, wherein the anti-skid layer has a coefficient of static friction with cardboard of greater than around 0.5μ.
3. An anti-skid sheet according to claim 1, wherein the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 2μ.
4. An anti-skid sheet according to claim 1, wherein the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around l.Oμ at an ambient temperature of around 23 °C.
5. An anti-skid sheet according to claim 1, wherein the anti-skid layer has a coefficient of static friction with cardboard of around 0.75μ, at an ambient temperature of around 230C.
6. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 1.5/x at an ambient temperature of around 38°C and a relative humidity of around 95%.
7. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of static friction with cardboard of around 12μ at an ambient temperature of around 38°C and a relative humidity of around 95%.
8. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around l.Oμ, at an ambient temperature of around -2O0C.
9. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of static friction with cardboard of around 0.8μ at an ambient temperature of around -200C.
10. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of static friction with cardboard of between around 0.5μ and around 1.5μ at an ambient temperature of around 23 "C and when the anti-skid layer has a wet surface.
11. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of static friction with cardboard of around 1.3μ at an
5 ambient temperature of around 230C and when the anti-skid layer has a wet surface.
12. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of dynamic friction with cardboard of greater than around 0.5μ.
13. An anti-skid sheet according to any one of the preceding claims, wherein the Q anti-skid layer has a coefficient of dynamic friction with cardboard of between around
0.5μ and around 2μ.
14. An anti-skid sheet according to any one of claims 1 to 11, wherein the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around 1.0μ at an ambient temperature of around 230C. s
15. An anti-skid sheet according to any one of claims 1 to 11, wherein the anti-skid layer has a coefficient of dynamic friction with cardboard of around 0.55/* at an ambient temperature of around 230C.
16. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of dynamic friction with cardboard of between around Q 0.5μ and around 1.0μ at an ambient temperature of around 38°C and a relative humidity of around 95%.
17. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of dynamic friction with cardboard of around 0.7μ at an ambient temperature of around 380C and a relative humidity of around 95%. 5
18. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ at an ambient temperature of around -2O0C.
19. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of dynamic friction with cardboard of around 0.6μ at an 0 ambient temperature of around -2O0C.
20. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of dynamic friction with cardboard of between around
0.5μ and around 1.5/1 at an ambient temperature of around 23 °C and when the anti-skid layer has a wet surface.
21. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a coefficient of dynamic friction with cardboard of around l.Oμ at an ambient temperature of around 230C and when the anti-skid layer has a wet surface.
22. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer is of substantially homogeneous composition.
23. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a Moh's hardness of less than around 3.
24. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a Moh's hardness of less than around 2.5.
25. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a Shore A hardness of less than around 70.
26. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a Shore A hardness of less than around 30.
27. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer has a weight of between around 6 and around lOgsm.
28. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer is formed from a copolymer acrylic emulsion.
29. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer is recyclable using caustic soda pulp reclamation.
30. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid layer is adapted to receive flexographic print.
31. An anti-skid sheet according to any one of the preceding claims, wherein the substrate layer is formed from a cellulose-based material.
32. An anti-skid sheet according to any one of the preceding claims, wherein the substrate layer is paper.
33. An anti-skid sheet according to any one of claims 1 to 30, wherein the substrate layer is formed from a polymer.
34. An anti-skid sheet according to claim 33, wherein the substrate layer is formed from polypropylene.
35. An anti-skid sheet according to any one of the preceding claims, wherein the adhesive layer is formed from permanent acrylic.
36. An anti-skid sheet according to any one of the preceding claims, wherein a backing sheet is removably applied to the adhesive layer.
37. An anti-skid sheet according to any one of the preceding claims, wherein the anti-skid sheet is in the form of a roll of tape.
38. An anti-skid sheet according to any one of claims 1 to 36, wherein the anti-skid sheet is in the form of an adhesive label.
39. A method of manufacturing an anti-skid sheet, said method including the steps of: providing a substrate layer; applying an adhesive layer to one side of the substrate layer; applying a non-adhesive, non-abrasive, anti-skid layer to the other side of the . substrate layer.
40. A method of manufacturing an anti-skid sheet according to claim 39, including the further step of heating the anti-skid layer to a predetermined temperature to activate anti-skid properties of the anti-skid layer.
41. A method of manufacturing an anti-skid sheet according to claim 40, wherein the predetermined temperature is around 120 degrees Celsius.
42. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 41, including the further step of providing the anti-skid layer with a coefficient of static friction with cardboard of greater than around 0.5 μ.
43. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 41, including the further step of providing the anti-skid layer with a coefficient of static friction with cardboard of between around 0.5μ and around 2μ.
44. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 43, including the further step of providing the anti-skid layer with a coefficient of static friction with cardboard of between around 0.5μ and around 1.0μ at an ambient temperature of around 230C.
45. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 43, including the further step of providing the anti-skid layer with a coefficient of static friction with cardboard of around 0.7 '5 μ at an ambient temperature of around 230C.
46. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 45, including the further step of providing the anti-skid layer with a coefficient of static friction with cardboard of between around 0.5μ and around 1.5μ at an ambient temperature of around 38°C and a relative humidity of around 95%.
47. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 45, including the further step of providing the anti-skid layer with a coefficient of static friction with cardboard of around 1.2μ at an ambient temperature of around 38°C and a relative humidity of around 95%.
48. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 47, including the further step of providing the anti-skid layer with a coefficient of static friction with cardboard of between around 0.5μ and around l.Oμ at an ambient temperature of around -2O0C.
49. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 47, including the further step of providing the anti-skid layer with a coefficient of static friction with cardboard of around 0.8μ at an ambient temperature of around -2O0C.
50. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 49, including the further step of providing the anti-skid layer with a coefficient of static friction with cardboard of between around 0.5μ and around 1.5μ. at an ambient temperature of around 230C and when the anti-skid layer has a wet surface.
51. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 49, including the further step of providing the anti-skid layer with a coefficient of static friction with cardboard of around 13μ at an ambient temperature of around 230C and when the anti-skid layer has a wet surface.
52. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 51, including the further step of providing the anti-skid layer with a coefficient of dynamic friction with cardboard of greater than around 0.5/1.
53. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 51, including the further step of providing the anti-skid layer with a coefficient of dynamic friction with cardboard of between around 0.5μ and around 2μ.
54. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 51, including the further step of providing the anti-skid layer with a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ at an ambient temperature of around 230C.
55. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 51, including the further step of providing the anti-skid layer with a coefficient of dynamic friction with cardboard of around 0.55μ at an ambient temperature of around
23°C.
56. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 55, including the further step of providing the anti-skid layer with a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ at an ambient temperature of around 380C and a relative humidity of around 95%.
57. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 55, including the further step of providing the anti-skid layer with a coefficient of dynamic friction with cardboard of around 0.7 μ at an ambient temperature of around 38°C and a relative humidity of around 95%.
58. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 57, including the further step of providing the anti-skid layer with a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ at an ambient temperature of around -20°C.
59. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 57, including the further step of providing the anti-skid layer with a coefficient of dynamic friction with cardboard of around 0.6μ at an ambient temperature of around - • 2O0C.
60. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 59, including the further step of providing the anti-skid layer with a coefficient of dynamic friction with cardboard of between around 0.5μ and around 1.5μ at an ambient temperature of around 23 °C and when the anti-skid layer has a wet surface.
61. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 59, including the further step of providing the anti-skid layer with a coefficient of dynamic friction with cardboard of around l.Oμ at an ambient temperature of around 23°C and when the anti-skid layer has a wet surface.
62. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 61, including the further step of providing the anti-skid layer with a substantially homogeneous composition.
63. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 62, including the further step of providing the anti-skid layer with a Moh's hardness of less than around 3.
64. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 62, including the further step of providing the anti-skid layer with a Moh's hardness of less than around 2.5.
65. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 64, including the further step of providing the anti-skid layer with a Shore A hardness of less than around 70.
66. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 64, including the further step of providing the anti-skid layer with a Shore A hardness of less than around 30.
67. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 66, including the further step of providing the anti-skid layer with a weight of between around 6 and around lOgsm.
68. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 67 including the further step of forming the anti-skid layer from a copolymer acrylic emulsion.
69. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 67, including the further step of forming the anti-skid layer from a material that is recyclable using caustic soda pulp reclamation.
70. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 69, including the further step of forming the anti-skid layer from a material that is adapted to receive fiexographic print.
71. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 70, including the further step of forming the substrate layer from a cellulose-based material.
72. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 70, including the further step of forming the substrate layer from paper.
73. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 70, including the further step of forming the substrate layer from a polymer.
74. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 70, including the further step of forming the substrate layer from polypropylene.
75. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 74, including the further step of forming the adhesive layer from permanent acrylic.
76. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 75, including the further step of removably applying a backing to the adhesive layer.
77. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 76, including the further step of forming the anti skid sheet into a roll of tape.
78. A method of manufacturing an anti-skid sheet according to any one of claims 39 to 76, including the further step of forming the anti skid sheet into an adhesive label.
79. A method of stacking cartons, said method comprising the steps of: closing the cartons using an anti-skid tape having: a substrate layer, a non-adhesive, non-abrasive, anti-skid layer bonded to one side of the substrate layer, an adhesive layer bonded to the other side of the substrate layer; stacking the cartons such that the anti-skid tape is sandwiched between the cartons to reduce relative translation of the cartons.
80. A method of stacking cartons according to claim 79, comprising the further step of forming the anti-skid layer with a coefficient of static friction with cardboard of greater than around 0.5μ.
81. A method of stacking cartons according to claim 79, comprising the further step of forming the anti-skid layer with a coefficient of static friction with cardboard of between around 0.5μ and around 2μ.
82. A method of stacking cartons according to claim 79, comprising the further step of forming the anti-skid layer with a coefficient of static friction with cardboard of between around 0.5μ and around l.Oμ at an ambient temperature of around 23°C.
83. A method of stacking cartons according to claim 79, comprising the further step of forming the anti-skid layer with a coefficient of static friction with cardboard of around 0.75μ at an ambient temperature of around 230C.
84. A method of stacking cartons according to any one of claims 79 to 83, comprising the further step of forming the anti-skid layer with a coefficient of static friction with cardboard of between around 0.5μ and around 1.5/x at an ambient temperature of around 38°C and a relative humidity of around 95%.
85. A method of stacking cartons according to any one of claims 79 to 83, comprising the further step of forming the anti-skid layer with a coefficient of static friction with cardboard of around 1.2μ at an ambient temperature of around 38°C and a relative humidity of around 95%.
86. A method of stacking cartons according to any one of claims 79 to 85, comprising the further step of forming the anti-skid layer with a coefficient of static friction with cardboard of between around 0.5μ and around l.Oμ at an ambient temperature of around -20° C.
87. A method of stacking cartons according to any one of claims 79 to 85, comprising the further step of forming the anti-skid layer with a coefficient of static friction with cardboard of around 0.8μ at an ambient temperature of around -2O0C.
88. A method of stacking cartons according to any one of claims 79 to 87, comprising the further step of forming the anti-skid layer with a coefficient of static friction with cardboard of between around 0.5μ and around 1.5μ at an ambient temperature of around 230C and when the anti-skid layer has a wet surface.
89. A method of stacking cartons according to any one of claims 79 to 87, comprising the further step of forming the anti-skid layer with a coefficient of static friction with cardboard of around 13μ, at an ambient temperature of around 230C and when the anti-skid layer has a wet surface.
90. A method of stacking cartons according to any one of claims 79 to 89, comprising the further step of forming the anti-skid layer with a coefficient of dynamic friction with cardboard of greater than around 0.5μ.
91. A method of stacking cartons according to any one of claims 79 to 89, comprising the further step of forming the anti-skid layer with a coefficient of dynamic friction with cardboard of between around 0.5jα and around 2μ.
92. A method of stacking cartons according to any one of claims 79 to 89, comprising the further step of forming the anti-skid layer with a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ at an ambient temperature of around 230C.
93. A method of stacking cartons according to any one of claims 79 to 89, comprising the further step of forming the anti-skid layer with a coefficient of dynamic
5 friction with cardboard of around 0.55/x at an ambient temperature of around 23°C.
94. A method of stacking cartons according to any one of claims 79 to 93, comprising the further step of forming the anti-skid layer with a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ at an ambient temperature of around 38°C and a relative humidity of around 95%. o
95. A method of stacking cartons according to any one of claims 79 to 93, comprising the further step of forming the anti-skid layer with a coefficient of dynamic friction with cardboard of around 0.7μ at an ambient temperature of around 38°C and a relative humidity of around 95%.
96. A method of stacking cartons according to any one of claims 79 to 95, s comprising the further step of forming the anti-skid layer with a coefficient of dynamic friction with cardboard of between around 0.5μ and around l.Oμ at an ambient temperature of around -2O0C.
97. A method of stacking cartons according to any one of claims 79 to 95, comprising the further step of forming the anti-skid layer with a coefficient of dynamic 0 friction with cardboard of around 0.6μ at an ambient temperature of around -200C.
98. A method of stacking cartons according to any one of claims 79 to 97, comprising the further step of forming the anti-skid layer with a coefficient of dynamic friction with cardboard of between around 0.5μ and around 1.5μ at an ambient temperature of around 23 °C and when the anti-skid layer has a wet surface. s
99. A method of stacking cartons according to any one of claims 79 to 97, comprising the further step of forming the anti-skid layer with a coefficient of dynamic friction with cardboard of around l.Oμ at an ambient temperature of around 230C and when the anti-skid layer has a wet surface.
100. A method of stacking cartons according to any one of claims 79 to 99, 0 comprising the further step of providing the anti-skid layer with a substantially homogeneous composition.
101. A method of stacking cartons according to any one of claims 79 to 100, comprising the further step of forming the anti-skid layer with a Moh's hardness of less than around 3.
102. A method of stacking cartons according to any one of claims 79 to 100, comprising the further step of forming the anti-skid layer with a Moh's hardness of less than around 2.5.
103. A method of stacking cartons according to any one of claims 79 to 102, comprising the further step of forming the anti-skid layer with a Shore A hardness of less than around 70.
104. A method of stacking cartons according to any one of claims 79 to 102, comprising the further step of forming the anti-skid layer with a Shore A hardness of less than around 30.
105. A method of stacking cartons according to any one of claims 79 to 104, comprising the further step of providing the anti-skid layer with a weight of between around 6 and around lOgsm.
106. A method of stacking cartons according to any one of claims 79 to 105, comprising the further step of forming the anti-skid layer from a copolymer acrylic emulsion.
107. A method of stacking cartons according to any one of claims 79 to 106, comprising the further step of forming the anti-skid layer from a material that is recyclable using caustic soda pulp reclamation.
108. A method of stacking cartons according to any one of claims 79 to 107, comprising the further step of forming the anti-skid layer from a material that is adapted to receive fiexographic print.
109. A method of stacking cartons according to any one of claims 79 to 108, comprising the further step of forming the substrate layer from a cellulose-based material.
110. A method of stacking cartons according to any one of claims 79 to 108, comprising the further step of forming the substrate layer from paper.
111. A method of stacking cartons according to any one of claims 79 to 108, comprising the further step of forming the substrate layer from a polymer.
112. A method of stacking cartons according to any one of claims 79 to 108, comprising the further step of forming the substrate layer from polypropylene.
113. A method of stacking cartons according to any one of claims 79 to 112, comprising the further step of forming the adhesive layer from permanent acrylic.
114. A method of stacking cartons according to any one of claims 79 to 113, comprising the further step of removably applying a backing sheet to the adhesive layer.
115. A method of stacking cartons according to any one of claims 79 to 114, comprising the further step of forming the anti-skid sheet into a roll of tape.
116. A method of stacking cartons according to any one of claims 79 to 114, comprising the further step of forming the anti-skid sheet into an adhesive label.
PCT/AU2006/001871 2005-12-12 2006-12-08 Anti-skid sheet WO2007068033A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2005906973A AU2005906973A0 (en) 2005-12-12 Anti-skid sheet
AU2005906973 2005-12-12

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WO2007068033A1 true WO2007068033A1 (en) 2007-06-21

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