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
  • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
  • D21H27/10—Packing paper
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
  • B65B11/02—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders
  • B65B11/025—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders by webs revolving around stationary articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
  • B65B11/04—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated
  • B65B11/045—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated by rotating platforms supporting the articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
  • B65B11/58—Applying two or more wrappers, e.g. in succession
  • B65B11/585—Applying two or more wrappers, e.g. in succession to stacked articles, e.g. pallettised loads
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
  • B65B41/12—Feeding webs from rolls
• • 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
• • 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
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
• • 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
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/70—Other properties
  • B32B2307/726—Permeability to liquids, absorption
  • B32B2307/7265—Non-permeable
• • 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
  • B32B2553/00—Packaging equipment or accessories not otherwise provided for
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer

Definitions

• the present invention relates to a method of grouping a plurality of objects to be moved.
• Methods for preparing a plurality of objects for their movement in a grouped condition are known in the packaging sector.
• polymeric films of elastically yielding material or heat-shrinkable material are used, which combine the advantages of high mechanical resistance with the advantages of their easy adaptability to the even irregular shape of the objects to be wrapped.
• the materials usually used to make these polymeric films are various and include in particular polyolefins, high density polythene (HDPE), low density polythene (LDPE) and others. These films are packaged in rolls from which the tape is then unwound at the time of use, which is wrapped around the objects placed on the pallet and which, thanks to its elastic compliance or its heat shrinkage, forms a sort of multilayer sheath around the objects and also around the pallet, forming a whole with it and making the handling of the assembly safe and rapid.
• HDPE high density polythene
• LDPE low density polythene
• the known methods of wrapping packages placed on a pallet provide for the polymeric film to be wrapped with a certain tension around the objects themselves, and this is by moving the wrapping machine with the roll of polymeric film around it to the loaded pallet, kept stationary, both by rotating the pallet placed on a rotating support and keeping the machine that supports the polymeric film still.
• the polymeric film is wrapped several times around the loaded pallet, both to form the multilayer sheath, and because generally the height of the loaded pallet is greater than the height of the polymeric film, which it must therefore be distributed during winding so as to cover the entire height of the loaded pallet with the various turns (loops).
• biodegradable materials such as recycled and nonrecycled paper tapes, derived from recycled cellulose fibers, bagasse or grass or straw fibers, etc.
• FR 2675466 already suggests wrapping a load with an extendable crepe paper tape.
• crepe paper presents over its entire surface small folds which develop transversely to the longitudinal direction of the paper tape, which cannot be stretched in a transverse direction, but only in a longitudinal direction, since its elongation is due to to the relaxation of these transverse folds, which have been created with traditional techniques. Consequently, the technique suggested by this prior document can find application in the case of regular shaped loads but not of irregularly shaped loads with lateral protrusions and recesses, such as those consisting for example of a plurality of objects having different shapes, placed on a pallet .
• the crepe paper and in particular the crepe paper with a high elongation coefficient can hardly be printed, given the presence of the showy folds, the packages that can at most be obtained according to FR 2675466 are generally anonymous.
• the purpose of the invention is to overcome the limits that the traditional technique sets, and to be able to wrap a load, consisting of objects possibly placed on a pallet, with a more ecological material and with a lower environmental impact compared to plastic material.
• Another object of the invention is to be able to wrap a load consisting of objects possibly placed on a pallet with a cheaper material than plastic.
• Another object of the invention is to be able to wrap a load consisting of objects possibly placed on a pallet and thus form a customizable packaging.
• Another object of the invention is to be able to wrap a load formed by objects possibly placed on a pallet with the use of traditional wrapping machines for polymeric films as such or with minimal modifications, which concern for example the setting of the operating parameters of the wrapping.
• Figure 1 shows in a perspective and schematic view a plant for wrapping a load consisting of objects placed on a pallet with an extensible paper tape
• Figure 2 always shows it in a schematic view in a different embodiment
• Figure 3 schematically shows a tape presenting folded edges being unwound from a roll
• the method according to the invention is finalized to wrap a plurality of objects 2 placed on a support surface and preferably on a pallet 4 near a vending machine (not shown) of a paper tape 6, unwound from a roll 8, supported by the vending machine.
• the tape 6 is made with non-creped extensible paper (uncreped), i.e. with paper that is obtained with methods described for example in EP 0824619, EP 2576201 and EP 3024977 and in which the extension is the result of a sliding of the fibers that form it and which had previously been micro-cramped both in the longitudinal direction and in the transverse direction.
• the extensible paper must be able to have a degree of extensibility of at least 6% in the longitudinal direction and 6% in the transverse direction, and preferably at least 10% in the longitudinal direction and at least 7% in the transversal.
• the vending machine on which the roll 8 of extensible paper is mounted can be a traditional fixed vending machine of the paper tape 6 which is unwound from the roll 8, to be wrapped around the objects 2 placed on the pallet 4, which in turn is placed on a rotating support 10, which rotates the load to be packed and thus causes the unwinding of the extensible paper tape 6 from the roll 8 and its winding around the objects 2 (fig. 1).
• the vending machine can be a traditional wrapping machine which supports the roll 8 and is provided with means for its movement around the pallet 4, which is fixed, and in this way is wrapped with the objects 2 by the belt 6 following the rotation of the wrapping machine around the load to be packed.
• the paper 6 has high characteristics of both longitudinal and transversal extensibility and the experimental tests carried out have allowed to define that an effective wrapping action requires that the paper tape has a degree of extensibility minimum of 6% both in the longitudinal direction than in the transverse direction, but preferably a degree of extensibility of at least 10% in the longitudinal direction and at least 7% in the transverse direction.
• the tape itself can be subjected to a slight tension in the longitudinal direction before its winding on the objects 2 possibly positioned on the pallet 4, or it can be stretched during its winding, thanks to its maintenance in a state of slight tension.
• the winding of the objects 2 and the pallet 4 with the extensible paper tape 6, which is arranged to form loops with a vertical axis, i.e. perpendicular to the support surface of the objects 2, consisting of the upper surface of the pallet 4, can be followed by a 90° overturning of the pallet itself, so that the winding can continue with the formation of loops substantially orthogonal to the previous ones. In this way, a more complete wrapping is obtained and its greater resistance to the stresses due to the handling of the packaging, as well as a further stabilization of the objects 2.
• the extensible paper can also be impregnated and I or added with anti-grease and anti-water agents, known per se, which can be introduced into the dough, with which the extensible caste tape 6 will be formed, or they can be applied by spraying or rolling or with other traditional techniques to the already formed extensible paper tape.
• the surface of the extensible paper tape can be smooth and therefore easily printable, or it can be structured and in particular it can be locally deformed to give rise, for example, to protrusions, which favor the adhesion between adjacent and at least partially overlapping layers.
• the extensible paper tape 6 may be convenient to couple the extensible paper tape 6 with a polymeric film or to apply a layer of glue or sealing material to the paper tape 6, both hot and cold, and this over the entire surface of the paper tape, extensible or on localized areas, with a technique similar to register printing.
• the end of the extensible paper tape can be stabilized in its position, for example with an adhesive layer.
• the invention also provides for covering said edges and said protruding parts with angles of biodegradable material.
• Extensible papers advantageously usable for this specific use can have weights ranging from 25 to 250 g I m 2 , preferably between 40 and 100 g / m 2 .
• Example 1 A pallet 4 of the Europallet type with four levels of packages made up of six bottles of soft drinks each is wound with a traditional wrapping machine, on which a roll 8 of extensible paper 6 with an extensibility of 8% both in the longitudinal direction and in the transverse direction.
• the wrapping machine is fixed while the pallet 4, on which the packages to be packed are placed, is placed on a rotating platform 10, which with its rotation unwinds the paper tape 6 from the roll 8.
• the paper roll 8 is kept slightly braked, so that the tape 6 is kept during its unwinding in a state of tension sufficient to cause, together with the extensibility in the transverse direction, a complete adaptation of the paper to the irregular shape and to the lateral roughness present in the packs 2 placed on the pallet 4.
• the tension of the paper tape 6 during winding is kept at values suitable to cause an extension of the paper itself below its maximum extensibility, so that even after its winding it still retains a certain margin of extensibility, necessary for avoid tearing during the handling of the wrapped pallet.
• Objects 2 of various shapes and sizes are placed on a pallet 4 of the Europallet type, which are then wrapped with a tape 6 of extensible paper with longitudinal extensibility values of 38% and transversal extensibility of 10%.
• the pallet 4 remains fixed while the wrapping machine is moved around it to wrap it with the extensible paper tape 6.
• the greater extensibility of the paper allows its easier adaptation to the irregular shape of the objects 2 placed on the pallet 4 and ensures however, their stabilization on it during the movements.
• beverage cans 2 are placed on a pallet 4, which are then wrapped with an extensible paper tape 6 having an extensibility of at least 15% in the transverse direction and at least 20% in the longitudinal direction.
• the load already wrapped with the extensible paper 6 can then be advantageously wrapped with a further possibly biodegradable film, which protects the paper 6 and the objects 2, wrapped by it, from rain, if the load is to be placed outdoors.
• a further possibly biodegradable film which protects the paper 6 and the objects 2, wrapped by it, from rain, if the load is to be placed outdoors.
• the undesired presence of a polymeric film is reduced both by the small quantity of plastic material and by its easy separability from the paper and its equally easy disposability.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Basic Packing Technique (AREA)
• Wrappers (AREA)
• Paper (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=74068339

Family Applications (1)

Country Status (8)

Cited By (1)

Citations (4)

Family Cites Families (10)

• 2020
  • 2020-09-30 IT IT102020000023068A patent/IT202000023068A1/it unknown
• 2021
  • 2021-09-22 CA CA3194005A patent/CA3194005A1/en active Pending
  • 2021-09-22 JP JP2023519441A patent/JP2023548648A/ja active Pending
  • 2021-09-22 CN CN202180066164.2A patent/CN116209569A/zh active Pending
  • 2021-09-22 MX MX2023003639A patent/MX2023003639A/es unknown
  • 2021-09-22 EP EP21786584.9A patent/EP4222313B1/en active Active
  • 2021-09-22 US US18/027,867 patent/US12286253B2/en active Active
  • 2021-09-22 WO PCT/IB2021/058652 patent/WO2022070005A1/en not_active Ceased

Patent Citations (4)

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