EP4481111A1 - Verpackungsmaterial mit siegelnahtbereich - Google Patents

Verpackungsmaterial mit siegelnahtbereich Download PDF

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Publication number
EP4481111A1
EP4481111A1 EP23180059.0A EP23180059A EP4481111A1 EP 4481111 A1 EP4481111 A1 EP 4481111A1 EP 23180059 A EP23180059 A EP 23180059A EP 4481111 A1 EP4481111 A1 EP 4481111A1
Authority
EP
European Patent Office
Prior art keywords
sealing
substrate
seam
packaging
seam area
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.)
Withdrawn
Application number
EP23180059.0A
Other languages
English (en)
French (fr)
Inventor
Jens Bröckel
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.)
B&T Entwicklungs und Vermarktungs GmbH
Original Assignee
B&T Entwicklungs und Vermarktungs 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 B&T Entwicklungs und Vermarktungs GmbH filed Critical B&T Entwicklungs und Vermarktungs GmbH
Priority to EP23180059.0A priority Critical patent/EP4481111A1/de
Priority to PCT/EP2024/066953 priority patent/WO2024260982A1/en
Publication of EP4481111A1 publication Critical patent/EP4481111A1/de
Withdrawn legal-status Critical Current

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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
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/62—Uniting opposed surfaces or edges; Taping by adhesives
    • 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
    • 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
    • D21H19/34—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising cellulose or derivatives 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/32—Multi-ply with materials applied between the sheets
    • D21H27/34—Continuous materials, e.g. filaments, sheets, nets
    • D21H27/36—Films made from synthetic macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2170/00—Construction of flexible containers
    • B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined

Definitions

  • the invention relates to the field of packaging material and packaging as well as a method for producing a packaging as described in the preamble of the independent claims.
  • Packaging such as a pouch, has to be sealed in order to have the packed goods protected from environmental influence.
  • the sealing should be conducted in the sealing seam area and has to be reliable.
  • the invention relates to a packing material comprising a substrate with a sealing seam area.
  • the substrate comprises a paper base layer. Furthermore, the substrate comprises two flat sides.
  • the sealing seam area is arranged on at least a part of at least one flat side of the substrate. In other words: the sealing seam area is at least a part of the substrate.
  • the sealing media is applied at least partially on the substrate. Such a partial application of the sealing media allows for a reliable sealing of the packing material to form a packaging.
  • a sealing seam is the joining seam between two (individual) parts of the sealing seam area.
  • a sealing media is arranged in the sealing seam area, wherein the sealing media comprises a water-soluble polymer.
  • the water-soluble polymer comprises at least one of poly(vinyl alcohol) (PVOH), cellulose-ether polymer, Butenediol-Vinylalcohol-Copolymer (BVOH), and Ethylene-Vinylalcohol-Copolymers (EVOH).
  • the water-soluble polymer comprises PVOH (poly(vinyl alcohol)).
  • the packing material is a high barrier material.
  • High barrier material in this context means, to provide an oxygen transmission rate (ORT) and a water vapor and/or humidity barrier suitable to pack oxygen sensitive such as coffee.
  • the oxygen transmission rate is the steady state rate at which oxygen gas permeates through a film at specified conditions of temperature and relative humidity. Values are expressed in cc/m 2 /24 hr in metric (or SI) units, with cc being cubic centimetre being cm 3 , m 2 being square metre, 24 hr being 24 hours being one day.
  • the OTR in this text is determined according to ISO 15105-2 (as of April 2022).
  • the packing material and/or the packaging has a water vapor and/or humidity barrier of a maximum of 15 g/m 2 per day at 25°C and a relative humidity of 80%, in particular a maximum of 10 g/m 2 per day at 25°C and a relative humidity of 80%, in particular 3 g/m 2 per day at 25°C and a relative humidity of 80%, in particular 2 g/m 2 per day at 25°C and a relative humidity of 80%.
  • the sealing media is applied with a rather small layer thickness in order to prevent a spreading of the sealing media upon sealing.
  • the packing material is foldable and/or cuttable such that in a folded state at least a part of the sealing seam area is arranged on top of another part of the sealing seam area. This allows for a reliable sealing of the folded packaging.
  • the sealing seam area comprises a longitudinal seam, in particular two longitudinal seams, a top seam and a bottom seam.
  • the top seam can also be called head seam.
  • the longitudinal seam, also called side seam, is a lengthwise seal which is directed along the hights of the packaging.
  • top seam and the bottom seam are separated from each other. Separated in this context means, that the top seam and the bottom seam do not touch each other.
  • the longitudinal seam, the top seam and/or the bottom seam can be arranged as at least one of
  • the longitudinal seam is arranged essentially at the longitudinal side areas of the substrate.
  • the bottom seam can be arranged essentially perpendicular to the longitudinal seam.
  • the top seam can be arranged essentially parallel to bottom seam. This enables an efficient folding of the packing material to provide packaging essentially shaped as a rectangular cuboid.
  • the substrate is on a roll to be processed.
  • the rolled up substate can be fixed in a machine for processing the packing material to produce a packaging, for example an FFS machine (Form Fill and Seal machine).
  • FFS machine Form Fill and Seal machine
  • several sealing seam areas for several packagings could be arranged on one roll.
  • the top seam can be separated from the previous and/or subsequent bottom seam.
  • the substrate has a customized size. This makes it possible to produce custom sized packaging, in particular a custom sized pouch.
  • the bottom seam of a first bottom seam area of a first packaging is not separated from a second top seam area of a second packaging.
  • the sealing media is applied in a larger area spanning the first bottom seam and the second top seam. This allows for a single application of the sealing media simultaneously on the bottom and top seam. While cutting the substrate in individual packaging sheets for folding and/or sealing the large area is divided and each separate packaging sheet comprises a part of the large area forming either the top seam area or the bottom seam area. In such the case the cutter runs through the sealing media.
  • the packing material is recyclable in a paper recycling process, in particular in paper recycling process according to DIN EN 13430 (as of the end of 2021). DIN being a European standard.
  • the sealing media is essentially only applied in the sealing seam area. Accordingly, no excess of sealing media is used. This makes it possible to reduce the amount of sealing media.
  • the packing material comprises at least 50 wt% paper, in particular at least 70 wt% paper. This allows for a good recycling yield in the paper recycling process.
  • the invention also concerns a packaging, in particular a pouch, for packing food, in particular for packing coffee.
  • the packaging comprises a packing material as described in this text.
  • the sealing media in the sealing seam area is designed as a sealing layer and the sealing layer is arranged between two portions of the sealing seam area of the substrate.
  • the sealing media is arranged on the flat side of the substrate facing the product to be packed.
  • the inside of the packaging is the side facing the product to be packed and/or sealed.
  • the outside of the packaging is facing away from the product towards the customer.
  • the invention also concerns a method for producing a packaging, in particular the packaging as described in this text, in particular a pouch.
  • the method comprises the steps of:
  • both parts of the sealing seam area applied on top each other have the sealing media arranged and/or applied. Accordingly, sealing media of one part of the sealing seam area is touching and/or contacting the sealing media of another part of the sealing seam area. This is in particular the case for the top seam and/or the bottom seam.
  • only part of the sealing seam area is covered with the sealing media before sealing. Accordingly, the when aligning at least two parts of the sealing seam areas on top of each other only one part of the sealing seam area has the sealing media arranged and/or applied. This enables the reduction of the used sealing media.
  • the sealing media arranged on one part of the sealing seam area is touching and/or contacting another part of the sealing seam area without any sealing media applied before sealing.
  • both parts of the sealing seam area are arranged next to the sealing media as after aligning the two parts of the sealing seal area are contacting the sealing media of the one part applied with the sealing media.
  • the sealing media comprises a water-soluble polymer, wherein the water-soluble polymer comprises at least one of poly(vinyl alcohol) (PVOH), cellulose-ether polymer, Butenediol-Vinylalcohol-Copolymer (BVOH), and Ethylene-Vinylalcohol-Copolymers (EVOH), in particular the water soluble polymer comprises PVOH.
  • the substrate comprises a paper base layer.
  • a sealing process is generally carried out in which a so-called sealing seam is created between two parts of the substrate by applying heat, time and/or pressure by means of a sealing device.
  • the aim of the sealing process is to weld two packing material.
  • Heat sealing has become important in the packaging industry because of their high cost-effectiveness.
  • ultrasound can be used for carry out the sealing.
  • the sealing temperature is 120°C to 220°C.
  • the sealing temperature is the temperature at which the sealing takes place. At such a sealing temperature the substrate stays intact and the sealing is reliable.
  • the sealing is facilitated by at least one of thermal conduction and ultrasound.
  • the sealing media is applied at least at one of the following conditions:
  • the hot and/or liquid sealing media is applied by a slot-die and/or in a point-by-point manner.
  • the water dissolved sealing media is applied to the substrate by an anilox roller, as a mayer-bar coating and/or it is sprayed onto the substrate.
  • the packaging is produced with at least one of a form, fill and seal packaging machine, an automatic folding box machine and a pressure machine. This enables the automated production of the packaging.
  • Figure 1 schematically shows a packing material 2 on a roll.
  • the packing material 2 is driven over couple of rolls and processed to a packaging 6, in particular a pouch 60.
  • the packing material 2 comprises a substrate 20 with a sealing seam area 11.
  • the sealing seam area 11 can comprise a top seam 12, a bottom seam 13 and/or a longitudinal seam 14.
  • the substrate 20 comprises a paper base layer 21.
  • the sealing seam area 11 is arranged at least on one flat side of the substrate 20.
  • a sealing media 10 is arranged in the sealing seam area 11, wherein the sealing media 10 comprises a water-soluble polymer 31.
  • the water-soluble polymer 31 comprises PVOH.
  • the longitudinal seam 14, the top seam 12 and the bottom seam 13 are separated from each other. Meaning those sealing seam areas do not touch each other but are arranged next to each other.
  • the substrate 20 is provide and the sealing media 10 is applied on the sealing seam area 11.
  • the substrate 20 is folded to form the packaging 6 and at least two sealing seam areas are aligned on top of each other. Pressure and/or ultrasound is applied in the sealing seam area 11 and the packaging 6 is sealed.
  • the sealing temperature 7 is 120°C to 220°C.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Wrappers (AREA)
EP23180059.0A 2023-06-19 2023-06-19 Verpackungsmaterial mit siegelnahtbereich Withdrawn EP4481111A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP23180059.0A EP4481111A1 (de) 2023-06-19 2023-06-19 Verpackungsmaterial mit siegelnahtbereich
PCT/EP2024/066953 WO2024260982A1 (en) 2023-06-19 2024-06-18 Packing material with a sealing seam area

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23180059.0A EP4481111A1 (de) 2023-06-19 2023-06-19 Verpackungsmaterial mit siegelnahtbereich

Publications (1)

Publication Number Publication Date
EP4481111A1 true EP4481111A1 (de) 2024-12-25

Family

ID=86899288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23180059.0A Withdrawn EP4481111A1 (de) 2023-06-19 2023-06-19 Verpackungsmaterial mit siegelnahtbereich

Country Status (2)

Country Link
EP (1) EP4481111A1 (de)
WO (1) WO2024260982A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0245921A2 (de) * 1986-05-16 1987-11-19 International Paper Company Heissversiegelbares Sperrmaterial für Saftpackung
EP0246897A2 (de) * 1986-05-23 1987-11-25 Unilever Plc Abdichtbare Behälter
WO2001013719A2 (en) * 1999-08-19 2001-03-01 Aventis Cropscience S.A. Container for pesticides
JP2020171536A (ja) * 2019-04-11 2020-10-22 凸版印刷株式会社 パウチ
US20220112663A1 (en) * 2020-10-09 2022-04-14 The Procter & Gamble Company Biodegradable and recyclable barrier paper laminate
US20230039088A1 (en) * 2020-10-16 2023-02-09 Koehler Innovation & Technology Gmbh Coated paper

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0245921A2 (de) * 1986-05-16 1987-11-19 International Paper Company Heissversiegelbares Sperrmaterial für Saftpackung
EP0246897A2 (de) * 1986-05-23 1987-11-25 Unilever Plc Abdichtbare Behälter
WO2001013719A2 (en) * 1999-08-19 2001-03-01 Aventis Cropscience S.A. Container for pesticides
JP2020171536A (ja) * 2019-04-11 2020-10-22 凸版印刷株式会社 パウチ
US20220112663A1 (en) * 2020-10-09 2022-04-14 The Procter & Gamble Company Biodegradable and recyclable barrier paper laminate
US20230039088A1 (en) * 2020-10-16 2023-02-09 Koehler Innovation & Technology Gmbh Coated paper

Also Published As

Publication number Publication date
WO2024260982A1 (en) 2024-12-26

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