EP4566968A1 - Emballage primaire - Google Patents

Emballage primaire Download PDF

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Publication number
EP4566968A1
EP4566968A1 EP24216899.5A EP24216899A EP4566968A1 EP 4566968 A1 EP4566968 A1 EP 4566968A1 EP 24216899 A EP24216899 A EP 24216899A EP 4566968 A1 EP4566968 A1 EP 4566968A1
Authority
EP
European Patent Office
Prior art keywords
primary packaging
packaging
carrier material
confectionery
primary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP24216899.5A
Other languages
German (de)
English (en)
Inventor
Stefan Berdzinski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heyne & Penke Verpackungen GmbH
Original Assignee
Heyne & Penke Verpackungen GmbH
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 Heyne & Penke Verpackungen GmbH filed Critical Heyne & Penke Verpackungen GmbH
Publication of EP4566968A1 publication Critical patent/EP4566968A1/fr
Pending legal-status Critical Current

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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
    • B65D65/42—Applications of coated or impregnated materials
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/25—Cellulose
    • D21H17/27—Esters thereof
    • 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
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/26—Aminoplasts
    • 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
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/16—Sizing or water-repelling agents
    • 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 invention relates to a primary packaging for goods, with an inner side for direct contact with the goods, for the packaging types twist wrap, fold wrap, top twist wrap and use as a bottom strip.
  • Primary packaging is the first packaging that comes into direct contact with the food it contains, such as confectionery.
  • paper-based products are used for many applications. In many cases, and where barrier properties are low, this occurs without any further modifications to the packaging material.
  • primary packaging has to fulfill a number of functions, including protecting the confectionery from external influences such as humidity, light, temperature fluctuations and contamination, layers are used to give the packaging paper barrier properties against oxygen, water vapor, oil and grease and other substances.
  • Plastic films such as polyethylene, polypropylene, or polyvinyl chloride are commonly used for packaging candies, chocolate, and other sweets. These films can come in various shapes, sizes, and degrees of transparency.
  • Aluminum foil is used in the packaging of delicate foods, such as chocolate bars, due to its protection against moisture, light and oxygen, to ensure the lasting quality of the confectionery.
  • Flow packs are flexible, easy-to-open bags often used for confectionery products such as gummy bears and chewing gum. They are convenient for the consumer and protect the confectionery from moisture and air.
  • Paper packaging offers an environmentally friendly option. It's particularly easy to print and emboss.
  • the primary packaging must be food-safe and must not transfer any harmful substances to the confectionery. This requires the use of materials approved for contact with food and compliant with applicable legal regulations.
  • the packaging must provide an appropriate barrier against moisture, oxygen, light, and other environmental influences that could compromise the quality and shelf life of the confectionery. This is especially important for sensitive products such as chocolate.
  • the secondary packaging seal must be intact and secure to prevent contamination of the confectionery. This can be achieved by heat sealing, adhesive closure, or other suitable methods.
  • the primary packaging must contain all legally required information, including the list of ingredients, nutritional information, allergen information, and the best-before date. Labels must be clear and legible.
  • the packaging should present the confectionery products attractively and support the brand image. This can be achieved through appealing design, graphics, and finishing techniques such as embossing or foil lamination. Furthermore, the packaging should be easy for consumers to open and reseal, ensuring user-friendliness.
  • the primary packaging has a single- or double-sided coating of the carrier material with a wax, paraffin, or hot melt adhesive.
  • the carrier material is a satin-finished kraft paper with a basis weight of 10 g/ m2 to 28 g/ m2 .
  • the EP 1 885 558 B2 describes a barrier film for packaging purposes, in particular for the packaging of food and beverages and other sensitive goods, in the form of a multilayer film, the mechanical properties of which are largely determined by a biaxially oriented film for which a crystallizable polyolefin is used as the film-forming polymer and which further comprises, as a layer or barrier, at least one coextruded layer of ethylene-vinyl alcohol copolymers (EVOH).
  • EVOH ethylene-vinyl alcohol copolymers
  • the object of the invention is to provide a primary packaging that, due to its physical, chemical, and food-technological properties, is suitable for use as primary packaging for food products, while simultaneously enabling a significant reduction in the packaging material used and the associated packaging costs. Furthermore, the primary packaging should be recyclable. The primary packaging should be producible from renewable raw materials.
  • the carrier material of the primary packaging consists of cellulose fibers, such as bleached hardwood kraft pulp (LBKP), bleached softwood kraft pulp (NBKP), bleached hardwood sulphite pulp (LBSP) or bleached softwood sulphite pulp (NBSP).
  • LKP bleached hardwood kraft pulp
  • NKP bleached softwood kraft pulp
  • LBSP bleached hardwood sulphite pulp
  • NBSP bleached softwood sulphite pulp
  • cellulose fibers obtained from paper waste can be used. These cellulose fibers can be used as a blend and may contain portions of other fibers, such as synthetic resin fibers.
  • kaolins calcium carbonate in its natural forms such as limestone, marble or dolomite, precipitated calcium carbonate, calcium sulfate, barium sulfate, titanium dioxide, talc, silica, aluminum oxide and their mixtures can be used as fillers for the base paper of the carrier material.
  • the carrier material has a basis weight of 38 g/m 2 to 45 g/m 2 .
  • the outside of the carrier material is printed, for example, with ornaments, decorations or the reproduction of brands or manufacturer information.
  • a functional layer is applied to the inside of the carrier material.
  • This functional layer serves several purposes. Firstly, it prevents the migration of grease. Furthermore, it prevents the product from sticking to the primary packaging.
  • the functional layer is in direct contact with the confectionery.
  • Packaging materials for direct food contact are designed to protect the food and must meet strict requirements to ensure food safety and consumer health.
  • DFC packaging materials must not transfer any harmful substances to food. They must be food-safe and must not release any harmful chemicals. Undesirable substances must not migrate from the packaging into the food. The materials must be designed to prevent the migration of components into food.
  • the applied functional layer must be environmentally friendly and able to be integrated into the recycling process.
  • a glycerin solution for example, is applied over the entire surface.
  • a protective varnish can be applied to the print before soaking the substrate in the glycerin solution.
  • the functional layer to prevent the adhesion of confectionery and the contamination of fats is then applied to the inside of the carrier material.
  • the glycerin Due to the heat and blowing speed of the drying air during the production process, part of the glycerin solution is removed from the carrier material.
  • the glycerin imparts flexibility and elasticity to the carrier material. This is particularly useful when the carrier material needs to be folded, bent, or formed to achieve specific packaging shapes.
  • Glycerin can help reduce the electrostatic charge of the substrate, which is particularly important in packaging materials to prevent dust attraction and damage to electronic or sensitive products.
  • the glycerin on the carrier material can increase the shelf life of the confectionery, especially for long-term storage.
  • glycerin can smooth the surface of the substrate, allowing for better, higher-quality printing. This is crucial when the substrate is used for labels, packaging printing, or other types of markings.
  • glycerin can improve the barrier properties of the carrier material against moisture, water vapor, grease, and other substances. This is important to protect the contents of the packaging from external influences.
  • the functional layer is composed of a copolymer of an unsaturated aromatic hydrocarbon and a nitrile.
  • Copolymers are of great importance in many areas of chemistry and materials science because they offer the possibility of producing tailor-made polymers with specific properties.
  • a copolymer is a polymer produced from the polymerization of two or more different monomers.
  • the different monomer units can have different chemical structures and functional groups, resulting in a variety of polymer structures and Depending on the type and arrangement of the monomer units, copolymers can exhibit specific physical and chemical properties.
  • the copolymer applied to the carrier material consists at least partially of an unsaturated hydrocarbon.
  • a nitrile for example, is used as an additional monomer.
  • This functional group is also known as a nitrile group or cyano group.
  • Nitriles can occur in aliphatic form, in which the nitrile group is bonded to an alkyl chain, or in aromatic form, in which it is bonded to an aromatic hydrocarbon.
  • styrene is used as the monomer of the unsaturated aromatic hydrocarbon.
  • Styrene also known as phenylethene, is an organic compound with the chemical formula CsHs. It belongs to the group of aromatic hydrocarbons and is an unsaturated hydrocarbon with a phenyl group-containing side chain.
  • acrylonitrile is used as nitrile.
  • Acrylonitrile also known as propenenitrile, is an organic compound with the chemical formula C3H3N. It is an unsaturated hydrocarbon belonging to the nitrile group.
  • the nitrile group is characteristic of this compound.
  • a print is applied to the outside of the carrier material, the side that is not in contact with the confectionery.
  • the term exterior refers to the outer surface or side of the package, which is usually visible when the product is wrapped and the package is closed or sealed. It plays an important role in the perception and marketing of a product. It can help attract consumer attention, convey information about the product, and promote the brand.
  • the print is applied to the carrier material, for example, using a gravure printing process.
  • Intaglio printing is a printing technique in which ink is forced into the recesses of a printing cylinder or plate. Intaglio printing is often used in the production of high-quality printed products.
  • the printing plates or cylinders are usually made of metal and have recesses into which the ink is applied. Excess ink on the surface is wiped away, leaving only the ink in the recesses.
  • the substrate to be printed is brought into contact with the printing plate or cylinder. Printing is achieved by applying pressure and/or heat, which transfers the ink from the recesses to the substrate.
  • gravure printing process allows for the reproduction of very fine details and color gradients, making it suitable for applications requiring high print quality. Furthermore, gravure products are often durable and resistant to abrasion and environmental influences.
  • all known printing processes can be used to print the carrier material, such as rotary offset printing, flexographic printing, stamping foil printing, color foil printing, calender coating or effect and spot coating.
  • a protective varnish can be applied to the print to protect it if required.
  • the primary packaging has a basis weight of more than 45 g/m 2 and less than 60 g/m 2 after the application of the glycerin, the print and the functional layer.
  • Basis weight is a physical quantity that indicates the mass of a material per unit area (g/ m2 ). It is often used in materials science and engineering applications to quantify the density or mass distribution of a material over a given area.
  • the surface weight of the functional layer applied on the inside is 7 to 9 g/m 2 .
  • strips and sheets up to 1 mm thick are tested using strip or shoulder specimens.
  • strips are the standard specimen shape. This specimen shape can be easily produced using a cutting press or a film cutter. Shoulder specimens are often used in quality control. In this case, a direct-measuring extensometer is required, which can record the specimen strain directly on the specimen. Typical test results include yield stress, yield strain, maximum stress, and nominal elongation at break.
  • the tensile properties are determined according to DIN EN ISO 527.
  • a sample strip of the primary packaging is stretched at a constant speed specified in the test standard and the force F is recorded with the change in length ⁇ L of the measuring section L 0 .
  • the primary packaging has a tensile strength in the machine direction according to DIN EN ISO 527 of more than 50 N/mm 2 and less than 60 N/mm 2 .
  • Confectionery is generally sensitive to moisture, oxygen, and external influences. Adequate tensile strength of the packaging ensures that the confectionery is protected from environmental influences and its quality is preserved.
  • Elongation at break like tensile strength, is a mechanical property of a material used to characterize its formability and ductility. Elongation at break is usually expressed as a percentage (%) and is an important parameter in evaluating the mechanical properties of materials. Elongation at break is the ratio of the change in length of a material specimen to the original length of the specimen that occurs during a tensile test until failure.
  • the primary packaging has an elongation at break according to DIN EN ISO 527 in the longitudinal direction of more than 1.8% and less than 2.4%.
  • Elongation at break is determined in tensile tests in which a sample of the material is subjected to a controlled tensile force. During the test, the deformation of the sample relative to its original length is measured until it breaks. The maximum extension before breakage is determined as the elongation at break.
  • Materials with high elongation at break are capable of significant deformation before failure and are called ductile. Materials with low elongation at break are brittle and fracture without significant deformation.
  • the carrier material contains more than 90% paper by weight.
  • the carrier material has a glycerol content of more than 1 wt.% and less than 4 wt.%, preferably it has a glycerol content of more than 2 wt.% and less than 3 wt.%.
  • Confectionery packaging often has to take on a variety of shapes and sizes. A certain elongation at break allows the packaging to adapt to the to adapt to the different product-typical shapes of the confectionery and to enclose them safely.
  • the primary packaging is recyclable.
  • Recyclable confectionery packaging is made from materials that can be easily recycled in existing recycling processes. This includes paper, cardboard, corrugated board, and certain plastics that are accepted at many recycling facilities.
  • Recyclable confectionery packaging is an important step toward more environmentally friendly packaging solutions. They help reduce waste, conserve resources, and reduce the ecological footprint.
  • a print is applied to the outside of the carrier material, the side that is not in contact with the confectionery.
  • a protective varnish can also be applied to the print.
  • a glycerin solution is applied over the entire surface.
  • the glycerin gives the carrier material flexibility and elasticity, among other things. This is particularly useful when it needs to be folded, bent, or shaped to achieve specific packaging shapes.
  • a functional layer is applied to the carrier material of the primary packaging to prevent the migration of fats from the confectionery and to prevent the confectionery from sticking.
  • the primary packaging for confectionery which has a functional layer for preventing the migration of fats, is used for the packaging types twist wrap, fold wrap, top twist wrap and use as a bottom strip.
  • Twist-wrap is a packaging method in which a product is wrapped in a piece of packaging material. The packaging material is wrapped around the product, and the ends are twisted to secure the package. This type of packaging is often used for candies, chocolates, and other small sweets. Twist-wrap not only provides hygienic packaging but also gives the products an attractive presentation.
  • Fold wrapping is a packaging method in which a flat, folded piece of packaging material is placed around a product. Packaging material is folded around the product and then glued or sealed on the sides or bottom to close the package.
  • Bag wrapping is a packaging method in which a product is placed in a small bag or pouch.
  • the bag is usually twisted or cinched at the top and closed with a ribbon or string to secure the package.
  • the only figure shows a sectional view of a primary packaging 1.
  • This comprises a glycerin-containing carrier material 4 on which a print 3 is arranged.
  • the primary packaging comprises a functional layer 5 arranged on the inside.
  • a protective varnish 2 is arranged on the print 3.
  • the primary packaging 1 has a basis weight of 53 g/m 2 .
  • the elongation at break determined in tensile tests is 2.1% in this design variant.
  • the tensile strength in the machine direction of the primary packaging 1 in this design variant is 57 N/mm 2 .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
EP24216899.5A 2023-12-06 2024-12-02 Emballage primaire Pending EP4566968A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102023134073.5A DE102023134073A1 (de) 2023-12-06 2023-12-06 Primärverpackung

Publications (1)

Publication Number Publication Date
EP4566968A1 true EP4566968A1 (fr) 2025-06-11

Family

ID=93744010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24216899.5A Pending EP4566968A1 (fr) 2023-12-06 2024-12-02 Emballage primaire

Country Status (2)

Country Link
EP (1) EP4566968A1 (fr)
DE (1) DE102023134073A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497203A (en) * 1947-11-12 1950-02-14 Paterson Pacific Parchment Com Butter package
DE2336865A1 (de) * 1972-07-24 1974-02-07 British Cellophane Ltd Verpackungsfolie und verfahren zu ihrer herstellung
CA1065182A (fr) * 1975-05-06 1979-10-30 Sakuo Noda Peau en materiaux fibreux pour salaisons, et methode de production
EP0761876A1 (fr) * 1995-09-08 1997-03-12 Bernhard Dettling Papier ou carton
EP1885558B2 (fr) 2005-06-02 2013-02-20 Brückner Maschinenbau GmbH Feuille-barriere multicouche coextrudee comportant au moins une couche de feuille a base de copolymere ethylene-alcool vinylique (evoh), son procede de production, et son utilisation
DE102013210095B3 (de) 2012-11-30 2014-02-27 Uwe Vorreiter Primärverpackung für Süßwaren
US20170081061A1 (en) * 2014-05-02 2017-03-23 Munksjö Oyj Twisting paper
EP3943661A1 (fr) 2020-07-20 2022-01-26 Schoeller Technocell GmbH & Co. KG Matière d'emballage doté d'une couche barrière à base d'eau
US20220153477A1 (en) * 2019-02-22 2022-05-19 Gimsa S.R.L. Recyclable composite material, in particular for food packaging

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1219130C (zh) 2002-09-12 2005-09-14 汕头方大应用包装科技有限公司 一种扭结糖果包装纸的生产方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497203A (en) * 1947-11-12 1950-02-14 Paterson Pacific Parchment Com Butter package
DE2336865A1 (de) * 1972-07-24 1974-02-07 British Cellophane Ltd Verpackungsfolie und verfahren zu ihrer herstellung
CA1065182A (fr) * 1975-05-06 1979-10-30 Sakuo Noda Peau en materiaux fibreux pour salaisons, et methode de production
EP0761876A1 (fr) * 1995-09-08 1997-03-12 Bernhard Dettling Papier ou carton
EP1885558B2 (fr) 2005-06-02 2013-02-20 Brückner Maschinenbau GmbH Feuille-barriere multicouche coextrudee comportant au moins une couche de feuille a base de copolymere ethylene-alcool vinylique (evoh), son procede de production, et son utilisation
DE102013210095B3 (de) 2012-11-30 2014-02-27 Uwe Vorreiter Primärverpackung für Süßwaren
US20170081061A1 (en) * 2014-05-02 2017-03-23 Munksjö Oyj Twisting paper
US20220153477A1 (en) * 2019-02-22 2022-05-19 Gimsa S.R.L. Recyclable composite material, in particular for food packaging
EP3943661A1 (fr) 2020-07-20 2022-01-26 Schoeller Technocell GmbH & Co. KG Matière d'emballage doté d'une couche barrière à base d'eau

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