A single-serve portion pack may have a multilayer film structure including a protective layer, a print, a base layer and a peelable seal layer. The print is situated in-between the protective layer and the base layer. The protective layer is a polyalkylene terephthalate based layer having a stress value at 20% strain, at 90° C., comprised between 5 and 20 MPa (preferably between 5 and 15 MPa), and a melting peak temperature comprised between 190 and 240° C. (preferably between 200 and 230° C.).
B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B65D 85/76 - Containers, packaging elements or packages, specially adapted for particular articles or materials for edible or potable liquids, semiliquids, or plastic or pasty materials for cheese
The present invention is related to a single-serve portion pack comprising a multilayer film structure, said multilayer film structure comprising a protective layer, a print, a base layer and a peelable seal layer, said print situated in-between said protective layer and said base layer wherein said protective layer is a polyalkylene terephthalate based layer characterized by: - a stress value at 20% strain, at 90°C, comprised between 5 and 20MPa, preferably between 5 and 15 MPa; - a melting peak temperature comprised between 190 and 240°C, preferably between 200 and 230°C.
B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 27/18 - Layered products essentially comprising synthetic resin characterised by the use of special additives
B32B 15/085 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising polyolefins
B32B 15/088 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising polyamides
B32B 15/082 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising vinyl resinsLayered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising acrylic resins
B32B 15/082 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising vinyl resinsLayered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising acrylic resins
B32B 15/085 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising polyolefins
B32B 15/088 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising polyamides
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 27/18 - Layered products essentially comprising synthetic resin characterised by the use of special additives
The present invention is related to a heat-sealable multilayer film comprising: - a support layer comprising at least one polymeric layer; - a peelable seal layer of polymer blend, said blend comprising: - 50 to 80% by weight of an ethylene polymer; - 10 to 40% by weight of a styrene polymer; and - 5 to 30% by weight of a styrene-butadiene block copolymer, characterized in that the average of the elastic or storage compliance at a frequency of 10 rad/s (J'10) and the elastic or storage compliance at a frequency of 100 rad/s (J'100) is at least 10-5 Pa-1, preferably at least 12 10-6 Pa-1, measured at a temperature of 160°C on a dynamic plate/plate rheometer.
B32B 7/06 - Interconnection of layers permitting easy separation
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
The present invention is related to a heat-sealable multilayer film comprising: - a support layer comprising at least one polymeric layer; - a peelable seal layer of polymer blend, said blend comprising: - 50 to 80% by weight of an ethylene polymer; - 10 to 40% by weight of a styrene polymer; and - 5 to 30% by weight of a styrene-butadiene block copolymer, characterized in that the average of the elastic or storage compliance at a frequency of 10 rad/s (J'10) and the elastic or storage compliance at a frequency of 100 rad/s (J'100) is at least 10-5 Pa-1, preferably at least 12 10-6 Pa-1, measured at a temperature of 160°C on a dynamic plate/plate rheometer.
B32B 7/06 - Interconnection of layers permitting easy separation
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
A hermetically closed package enclosing a product comprises a wall formed of a packaging material including a first polymer film (7) and a second polymer film (10) being co-extensive with the packaging material, the first polymer film (7) is laminated to the second polymer film (10) by means of an adhesive layer (16). One of the polymer films is provided in a limited region thereof with a layer of a material generating heat when subjected to microwave radiation, i.e. a heat-generating layer (5) having susceptor effect. The heat-generating effect, i.e. the susceptor effect, of the heat-generating layer (5) is selected so as to melt, decompose, soften or weaken the first polymer film (7) and/or the second polymer film (10) in the limited region as seen transversely of the packaging material to such a degree that an opening is formed in the limited region.
B65D 81/34 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs intended to be cooked or heated within the package
B65D 77/30 - Opening or contents-removing devices added or incorporated during filling or closing of containers
8.
Packaging material with integrated pressure relief valve
A packaging material for forming at least a part of a package for a product releasing gasses comprises a one-way pressure relief valve (18) including a first inner film (10), being provided with at least one inlet opening (13, 14) therethrough, and a second outer film (11) covering the at least one inlet opening (13, 14) and being bonded to the first inner film (10) to form a channel portion (12) between the inner and the outer film. The channel portion (12) communicates with the surroundings of the package through at least one outlet opening (15) spaced apart from the at least one inlet opening (13, 14). The pressure relief valve (18) further comprises a liquid (19) provided in the channel portion (12) and solid spacer means (17) provided in the channel portion (12) proximate to the at least one inlet opening (13, 14). The outer film (11) is a soft film having such a flexibility or elasticity that in a tensile test a force of less than 5 N is needed for elongating a test piece thereof having a width of 15 mm by 5%.
B32B 3/10 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material
B32B 3/20 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by an internal layer formed of separate pieces of material of hollow pieces, e.g. tubesLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by an internal layer formed of separate pieces of material of pieces with channels or cavities
B32B 3/26 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids
B32B 9/04 - Layered products essentially comprising a particular substance not covered by groups comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance
A packaging material for forming at least a part of a package for a product releasing gasses comprises a one-way pressure relief valve (18) including a first inner film (10), being provided with at least one inlet opening (13,14) therethrough, and a second outer film (11) covering the at least one inlet opening (13, 14) and being bonded to the first inner film (10) to form a channel portion (12) between the inner and the outer film. The channel portion (12) communicates with the surroundings of the package through at least one outlet opening (15) spaced apart from the at least one inlet opening (13, 14). The pressure relief valve (18) further comprises a liquid (19) provided in the channel portion (12) and solid spacer means (17) provided in the channel portion (12) proximate to the at least one inlet opening (13, 14).The outer film (11) is a soft film having such a flexibility or elasticity that in a tensile test a force of less than 5 N is needed for elongating a test piece thereof having a width of 15mm by 5%.
B32B 3/08 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
B32B 3/24 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by an apertured layer, e.g. of expanded metal
B65D 77/22 - Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags Details
