EP3606746A1 - Laminé d'emballage scellable et pourvu d'un mât - Google Patents

Laminé d'emballage scellable et pourvu d'un mât

Info

Publication number
EP3606746A1
EP3606746A1 EP18712206.4A EP18712206A EP3606746A1 EP 3606746 A1 EP3606746 A1 EP 3606746A1 EP 18712206 A EP18712206 A EP 18712206A EP 3606746 A1 EP3606746 A1 EP 3606746A1
Authority
EP
European Patent Office
Prior art keywords
layer
nonwoven fabric
extrusion
coated
packaging laminate
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Withdrawn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
EP18712206.4A
Other languages
German (de)
English (en)
Inventor
Achim Grefenstein
Stefan Büttner
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.)
Constantia Pirk GmbH and Co KG
Original Assignee
Constantia Pirk GmbH and Co KG
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 Constantia Pirk GmbH and Co KG filed Critical Constantia Pirk GmbH and Co KG
Publication of EP3606746A1 publication Critical patent/EP3606746A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical 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
    • 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
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • 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
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/03—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers with respect to the orientation of features
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/40—Packages formed by enclosing successive articles, or increments of material, in webs, e.g. folded or tubular webs, or by subdividing tubes filled with liquid, semi-liquid, or plastic materials
    • B65D75/44—Individual packages cut from webs or tubes
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/04—4 layers
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • 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
    • B32B2307/514—Oriented
    • 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
    • B32B2307/582—Tearability
    • 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
    • B32B2307/718—Weight, e.g. weight per square meter
    • 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
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
    • B32B37/203—One or more of the layers being plastic

Definitions

  • the subject invention relates to a sealable packaging laminate with an extrusion-coated nonwoven fabric layer and a sealing layer.
  • non-wovens made of synthetic fibers are often used as packaging material because they have a pleasant feel and an appealing appearance.
  • nonwovens can be printed with acceptable printing results with acceptable results.
  • a packaging laminate is made of a nonwoven fabric and a plastic layer associated therewith. Such a packaging laminate is e.g. from DE 10 2006 042 058 A1 or DE 10 2004 029 596 A1, in which the nonwoven fabric is bonded to the plastic layer via an adhesive layer.
  • EP 3 025 856 A1 also describes such a packaging laminate of a polypropylene-based nonwoven fabric which is provided with a multilayer plastic film via an adhesive layer.
  • the innermost layer is a sealing layer of a polyolefin.
  • a barrier layer e.g. aluminum or a metallized film.
  • the outer nonwoven fabric can also be printed.
  • nonwoven packaging laminates typically have very high tear resistance and are therefore often used for large packaging where the strength of the packaging laminate is required.
  • the problem with this is that a package made from such a packaging laminate can not easily be torn open by a person due to the high tear resistance, in particular of the nonwoven fabric, but instead can be torn open for most aids, such as e.g. Knife or scissors are required.
  • a problem with such laminated with an adhesive packaging laminates is also to be seen in that the laminating adhesive can penetrate the nonwoven fabric, which can lead to a roll for gluing the individual rolled layers, especially when rolling up the packaging laminate. Therefore, a certain thickness of the nonwoven fabric is required to surely prevent permeation of the laminating adhesive by the nonwoven fabric.
  • a thick nonwoven naturally increases the tear strength, which in turn leads to problems in terms of tearability.
  • EP 1 000 736 A2 describes a packaging laminate in which a polyethylene or polypropylene layer is extrusion-coated onto a non-woven fabric or laminated with an adhesive. From this, a bag package is made with a flap, on the flap an adhesive tape or the like is applied for closing the bag.
  • Non-woven and plastic film laminates are also commonly used in personal care products or clothing. For these applications, the tear resistance is quite desirable and it is more about the provision of an elastic laminate.
  • Such a laminate is known, for example, from EP 2 106 343 B1, in which a layer of an elastomeric polymer has been extruded onto a nonwoven fabric.
  • Elastic laminates are generally unsuitable for packaging applications. Above all, such elastic packaging could be torn even worse due to the inherent elasticity.
  • This object is achieved with a packaging laminate with an extrusion-coated nonwoven layer of a nonwoven fabric made of a polymer having a basis weight between 6 to 30 g / m 2, wherein on one side of the nonwoven fabric an extrusion coating based on a polyolefin with a layer thickness between 2 and 15 g / m 2 is extruded and this extrusion-coated nonwoven fabric layer is bonded with a laminating adhesive layer having a base layer comprising at least one seal layer based on a sealable thermoplastic polymer having a thickness of 10 to 100 ⁇ m, the laminating adhesive layer being provided between the extrusion-coated side of the extrusion-coated nonwoven fabric layer and the base layer.
  • the look and feel of the nonwoven fabric can be obtained and the thickness of the nonwoven fabric despite the lamination can be greatly reduced.
  • the packaging laminate can be easily torn by hand due to the reduced tear strength and material costs can be reduced.
  • the packaging laminate may be made by a process of providing an extrusion-coated nonwoven layer comprised of a nonwoven fabric of a polymer having a basis weight between 6 to 30 g / m 2 and a layer extruded on one side of the nonwoven fabric based on a polyolefin having a layer thickness between 2 and 15g / m2, a base layer comprising at least one sealing layer based on a sealable thermoplastic polymer having a thickness of 10 to 100 ⁇ m, is provided and on one side of the base layer and / or on the extrusion-coated side of the extrusion-coated nonwoven layer is a laminating adhesive is applied and the base layer and the extrusion-coated nonwoven layer are joined together by the laminating adhesive.
  • the properties of the packaging laminate can be influenced in a simple but targeted manner if the sealing layer is multi-layered and / or the base layer another laminate layer between the sealing layer and the Kaschierkleber für summarized.
  • the sealing layer comprises at least one layer of ethylene-vinyl alcohol copolymers
  • an effective barrier layer can be realized.
  • the further laminate layer is preferably a layer based on polyethylene, polypropylene, polyester, polyamide, polylactide, ethylene-vinyl alcohol copolymer, metallized biaxially oriented polypropylene, metallized polyethylene terephthalate, aluminum oxide or silicon oxide coated polyethylene terephthalate or aluminum.
  • the polymer fibers of the nonwoven fabric may be predominantly oriented in one direction and / or elongate bonding points may be provided in the nonwoven fabric.
  • FIG. 2 shows a further embodiment of a packaging laminate according to the invention
  • FIG. 3 shows an exemplary production method of a packaging laminate according to the invention
  • FIG. 4 shows a packaging made of a packaging laminate according to the invention.
  • a packaging laminate 1 according to the invention is shown in FIG. 1 and comprises an extrusion-coated nonwoven fabric layer 6 of a nonwoven fabric 2 provided with an extrusion coating 3, which is bonded to a laminating adhesive layer 5 with a base layer 7.
  • the base layer 7 comprises, for example, a sealing layer 4.
  • the non-extrusion-coated side of the extrusion-coated nonwoven fabric layer 6, which forms an outer layer in the packaging laminate 1, may be printed or not printed.
  • a printing layer 9 in the form of a desired printed image can be applied, for example, in a conventional manner by means of a gravure printing, digital printing or flexographic printing process, or another suitable printing process.
  • nonwoven fabric 2 for the extrusion-coated nonwoven fabric layer 6 may be an arbitrarily produced nonwoven fabric of polymer fibers, based primarily on polypropylene (PP), polyethylene (PE), polyester (such as PET), polyamide (PA) or cellulose, either as a sole component or as a blend or co-extrudate of said substances.
  • the nonwoven fabric 2 is typically a carded nonwoven, spunlaced nonwoven, spunbound nonwoven, or meltblown nonwoven nonwoven fabric. It is also conceivable that the fibers of the nonwoven fabric 2 predominantly in one direction are oriented and / or elongated bonding points are provided in the nonwoven fabric 2, to increase the rupture, if necessary.
  • the nonwoven fabric 2 is used with a basis weight between 6 and 30 g / m 2 . Such a nonwoven fabric 2 is still thin enough to be torn by a person.
  • a material with a tensile strength of> 8N and above is considered no longer rupturable by hand.
  • a breaking strength of ⁇ 8N, preferably ⁇ 5N is sought.
  • the tear strength is measured according to DIN EN ISO 6383-1.
  • the extrusion coating 3 is primarily a polyolefin layer (eg based on PP or PE), which is extruded onto the nonwoven fabric with a layer thickness of 2 to 15 g / m 2 .
  • the sealing layer 4 with a thickness of 10 to 10 ⁇ m, preferably 15 to 70 ⁇ m, consists of a sealable, thermoplastic polymer, for example a polyolefin (eg PP, PE) or polylactide (PLA)
  • the sealing layer 4 may be single-layered or multi-layered
  • the sealing layer 4 could also be metallised (eg with aluminum) or coated with aluminum oxide or silicon oxide on the side facing the nonwoven fabric 2.
  • a metallization or coating mainly fulfills a barrier function, but can also be used for the optical design
  • the sealing layer 4 is multi-layered, for example as a co-extrudate
  • at least one layer of the multi-layered sealing layer 4 preferably serves the barrier function, eg instead of a metallization or coating
  • a suitable barrier also depends on the sealing layer 4 himself off for a stretched film in the Siegelsc
  • a coating is selected.
  • a co-extruded barrier layer will give better results.
  • at least one of the layers of the multilayered sealing layer 4 of ethylene-vinyl alcohol copolymers (EVOH) for the realization of the barrier function.
  • EVOH ethylene-vinyl alcohol copolymers
  • a laminating adhesive layer 5 is provided, via which the two outer layers are joined together to form the packaging laminate 1.
  • any suitable solvent-containing, solvent-free or aqueous laminating adhesive for example based on polyurethane (PU) or polyacrylate, can be used as the laminating adhesive for the laminating adhesive layer 5.
  • the layer thickness of the laminating adhesive layer 5 is 0.5 to 6 g / m 2 , preferably 1 to 2 g / m 2 .
  • the extrusion coating 3 of the extrusion-coated nonwoven fabric layer 6 is arranged facing the sealing layer 4, so that the laminating adhesive is applied between the extrusion coating 3 and the sealing layer 4. This can be prevented that the laminating adhesive in the manufacture of the packaging laminate 1 in the Nonwoven fabric 2 penetrates or penetrates, which makes it possible to reduce the thickness of the nonwoven fabric 2 so far that the packaging laminate 1 can be torn by hand.
  • the thickness of the nonwoven fabric 2 By reducing the thickness of the nonwoven fabric 2, of course, the material costs can be reduced. By reducing the thickness of the nonwoven fabric 2, however, neither the appearance nor the haptics of the packaging laminate 1 are adversely affected.
  • the base layer 7 may comprise, in addition to the (single or multi-layered) sealing layer 4, also a further laminate layer 8, this further laminate layer 8 of the base layer 7 being arranged facing the nonwoven fabric 2, as shown in FIG.
  • the sealing layer 4 in FIG. 2 is a multilayered layer.
  • the laminate layer 8 is for example a layer based on plastic or aluminum with a thickness between 3 and ⁇ , preferably between 6 and 30 ⁇ ".
  • a plastic layer as a laminate layer 8 this may also be metallized (eg with aluminum) or with aluminum oxide or
  • the laminate layer 8 is preferably a plastic layer of PE, PP, polyester, PA, polylactide (PLA), EVOH, metallized biaxially oriented PP (BOPPmet), metallized polyethylene terephthalate (PETmet), alumina or silica coated PET (PETAlOx
  • PDA polylactide
  • BOPPmet metallized biaxially oriented PP
  • PETmet metallized polyethylene terephthalate
  • PETAlOx a variety of additional properties can be integrated into the packaging laminate 1, such as barrier, stiffness, optics (eg by metallization), etc.
  • the laminate layer 8 and the sealing layer 4 can be coextruded to the base layer 7 or be laminated.
  • a concrete produced packaging laminate 1 consisted (from outside to inside) of a nonwoven fabric made of polypropylene with 14g / m 2 basis weight with an extrusion coating 3 of polyethylene with 4g / m 2 basis weight, a laminating adhesive layer 5 based on a polyurethane with an order of 4g / m 2 and a single-layer base layer 7 of a sealing layer 4 made of PE with a thickness of 25 ⁇ m.
  • the application of the laminating adhesive took place on the extrusion-coated nonwoven layer 6.
  • This packaging laminate 1 could simply be torn by hand. 3N measured according to DIN EN ISO 6383-1.
  • Another manufactured packaging laminate 1 consisted (from outside to inside) of a nonwoven made of polypropylene with 14g / m 2 basis weight with an extrusion coating 3 of polyethylene with 4g / m 2 basis weight, a laminating adhesive layer 5 based on a polyurethane with an order of 3.8g / m 2 , a multilayer base layer 7 with a laminate layer 8 of a stretched PP (OPP) with a thickness of 20 ⁇ ", a laminating adhesive based on a polyurethane with a thickness of 2.5g / m 2 and a sealing layer 4 made of PE with The production took place by laminating the extrusion-coated nonwoven fabric layer 6 with the laminate layer 8, with the laminating adhesive being applied to the laminate layer 8.
  • OPP stretched PP
  • an extrusion-coated nonwoven fabric layer 6 and a base layer 7 comprising at least one sealing layer 4 are provided, as shown in FIG.
  • These two layers are laminated together using laminating adhesive.
  • the application of the laminating adhesive can be carried out by any well-known method, for example by spraying (as indicated in Figure 3), rolling, etc., and can be done either on the extrusion coating 3 or on the base layer 7, or even on both , The two layers are then pressed together and connected together.
  • the packaging laminate 1 can be used to produce a package 10, for example a bag, as shown in FIG.
  • the packaging laminate 1 can be folded in a suitable manner, so that the sealing layers 4 come to lie facing each other by the folding, so that it can be heat-sealed at these sealing points 1 1.
  • the package 10 can also be produced on known form filling machines and filled at the same time.
  • the nonwoven fabric 2 is arranged externally, giving the package 10 a pleasant feel and appearance.
  • such a package 10 can be opened by tearing even without tools by hand. For this purpose, no weakening lines or other opening aids are absolutely necessary, but could still be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un laminé d'emballage facile à déchirer, comprenant une couche de mât (6) constituée d'un mât (2) réalisé dans un polymère d'un poids surfacique compris entre 6 et 30 g/m2, un revêtement par extrusion (3) à base d'une polyoléfine et d'une épaisseur de couche comprise entre 2 et 15g/m2 étant extrudé sur une face du mât (2) et cette couche de mât (6) revêtue par extrusion étant liée, par une couche d'adhésif pour stratifié (5), à une couche de base (7) qui comporte au moins une couche de scellement (4) à base d'un polymère thermoplastique scellable d'une épaisseur comprise entre 10 et 100μm, la couche d'adhésif pour stratifié (5) étant prévue entre la face revêtue par extrusion de la couche de mât (6) et la couche de base (7).
EP18712206.4A 2017-04-04 2018-03-20 Laminé d'emballage scellable et pourvu d'un mât Withdrawn EP3606746A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50265/2017A AT519469B1 (de) 2017-04-04 2017-04-04 Siegelfähiges Verpackungslaminat mit Vliesstoff
PCT/EP2018/057026 WO2018184831A1 (fr) 2017-04-04 2018-03-20 Laminé d'emballage scellable et pourvu d'un mât

Publications (1)

Publication Number Publication Date
EP3606746A1 true EP3606746A1 (fr) 2020-02-12

Family

ID=61692014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18712206.4A Withdrawn EP3606746A1 (fr) 2017-04-04 2018-03-20 Laminé d'emballage scellable et pourvu d'un mât

Country Status (3)

Country Link
EP (1) EP3606746A1 (fr)
AT (1) AT519469B1 (fr)
WO (1) WO2018184831A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19806475A1 (de) * 1998-02-17 1999-08-19 Wolff Walsrode Ag Mehrlagige Siegelschicht und damit hergestellte hermetisch versiegelbarer Packstoff
JP4043471B2 (ja) * 2004-10-26 2008-02-06 株式会社イシダ ディスプレイストリップ及び商品展示体
JP5600834B2 (ja) * 2007-12-19 2014-10-08 株式会社イシダ 商品展示体
US9056697B2 (en) * 2008-12-15 2015-06-16 Exopack, Llc Multi-layered bags and methods of manufacturing the same
CH700868A2 (de) * 2009-04-23 2010-10-29 Alcan Tech & Man Ltd Behälterdeckel.
EP2589366A1 (fr) * 2011-11-07 2013-05-08 IDT Biologika GmbH Emballage en film biodégradable pour agents biologiques oraux
CN205929690U (zh) * 2016-08-22 2017-02-08 海宁市粤海彩印有限公司 纸塑复合轻包装膜和标签袋

Also Published As

Publication number Publication date
AT519469B1 (de) 2018-07-15
WO2018184831A1 (fr) 2018-10-11
AT519469A4 (de) 2018-07-15

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