EP3758930A1 - Structure composite pour couvercle d'airbag et produit cousu de la structure composite - Google Patents

Structure composite pour couvercle d'airbag et produit cousu de la structure composite

Info

Publication number
EP3758930A1
EP3758930A1 EP19704656.8A EP19704656A EP3758930A1 EP 3758930 A1 EP3758930 A1 EP 3758930A1 EP 19704656 A EP19704656 A EP 19704656A EP 3758930 A1 EP3758930 A1 EP 3758930A1
Authority
EP
European Patent Office
Prior art keywords
layer
composite structure
foam
structure according
layers
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Withdrawn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
EP19704656.8A
Other languages
German (de)
English (en)
Inventor
Elizabete de Pinho
Luis Filipe SILVA
Valério Gonçalves
Julia Burk
Tom MARQUART
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.)
Tmg Tecidos Plastificados E Outros Revestimentos Para A Industria Automovel SA
Original Assignee
Tmg Tecidos Plastificados E Outros Revestimentos Para A Industria Automovel SA
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 Tmg Tecidos Plastificados E Outros Revestimentos Para A Industria Automovel SA filed Critical Tmg Tecidos Plastificados E Outros Revestimentos Para A Industria Automovel SA
Publication of EP3758930A1 publication Critical patent/EP3758930A1/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Withdrawn legal-status Critical Current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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam 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
    • 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
    • B32B27/065—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 foam
    • 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
    • B32B27/08—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 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
    • B32B27/12—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
    • 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
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • 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
    • 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
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/06—Embossing
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/026—Knitted fabric
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • 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
    • 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
    • B32B7/08—Interconnection of layers by mechanical means
    • 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
    • B32B7/08—Interconnection of layers by mechanical means
    • B32B7/09—Interconnection of layers by mechanical means by stitching, needling or sewing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • 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
    • B32B2255/26—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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • 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
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/536—Hardness
    • 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
    • B32B2307/71—Resistive to light or to UV
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Definitions

  • the present invention relates to a composite structure as a cover for an airbag cover, a sewing product and a method for producing the composite structure and the sewing product.
  • Airbags are used in motor vehicles in various places, for example in steering wheels,
  • the plastic carrier in all its layers one or more material weakenings, so-called. Breaking points, which define the firing channel of the airbag.
  • Breaking points which define the firing channel of the airbag.
  • the cover of the airbag in the region of the airbag flap with a so-called tear seam so that it can open unhindered in the event of a collision and the airbag can deploy.
  • the dashboard is provided with the integrated airbag flap with a coating without tear seam.
  • this coating must have a material weakening in the area of the airbag flap, so that a secure airbag shot, that is the secure opening of the airbag flap and the deployment of the airbag in the event of an impact, remains ensured.
  • the opening of the coating during the airbag shot along the material weakenings must also take place within a predetermined time window.
  • an uncontrolled particle flight by flying fragments of the coating must be avoided in any case.
  • film materials can be used. These film materials must show a required tear behavior, which must take place within defined timeframes, the deployment of the airbag, a particle flight is avoided and the protection of the passenger is guaranteed.
  • the produced skin is foam-backed with a foam.
  • This foam is simultaneously connected to a stable carrier part.
  • the airbag flap is driven by the bag against the foam at an airbag opening, which breaks. in the further course of the flap hits the compact inner layer of the two-ply
  • Material weakening for airbag covers can be used.
  • foam film laminates for airbag covers is described in DE 10 2014 213 974 A1.
  • the foam film laminate described therein comprises a compact cover layer and a foam layer having a density of at least 350 kg / m 3 on the underside of the cover layer, wherein the cover layer has an outer layer and an inner layer.
  • film laminates for airbag covers is also described in DE 10 2016 206 340 Al.
  • the film laminate described therein comprises a compact cover layer and a foam layer having a thickness in the range of 0.5 to 4 mm and a density of 40 to 200 kg / m 3 on the underside of the cover layer, wherein the cover layer can be made in two layers.
  • a disadvantage of these composite structures is the considerable wrinkling, so that they are difficult to handle, for example during processing, in particular during sewing.
  • the composite structures should be easy to sew.
  • the object of the present invention is to provide a composite structure and a sewing product having an excellent combination of properties, such as tearing properties and haptics, with simultaneously improved wrinkling and handling during processing, especially in sewing.
  • the subject of the present invention is in particular the following: [1] Composite structure comprising a foam layer, a textile layer, a cover layer and a lacquer layer in this order, wherein the foam layer has a density of at most 300 kg / m 3 and contains a polyolefin, the cover layer is thermoplastic and comprises at least two compact part layers of different composition wherein each sub-layer contains at least one thermoplastic selected from polyolefin and polyvinyl chloride.
  • the composite structure according to the invention has a tear behavior that meets the requirements for the airbag opening, without having to weaken the composite structure or decorative material. On the one hand, this avoids a visible weakening line, which is rated as a flaw in the design.
  • the main advantage is that the manufacturing costs can be reduced.
  • the composite structure according to the invention represents a cost-effective alternative to the high-priced PVC or PUR materials with spacer materials.
  • the sewability of the composite structure according to the invention allows use as an alternative to the materials mentioned.
  • the composite structure according to the invention can also be used in luxury vehicles.
  • the composite structures of the invention have a low wrinkling on buckling. As a result, they are easier to handle and in particular allow easier sewing.
  • the composite structures according to the invention have further properties which are advantageous when sewing. These properties are
  • the material basis in this layer can be selected to meet specific requirements such as surface resistances, gloss, grain, age resistance and the like.
  • Another advantage is the easy recyclability of the composite structure according to the invention, when a polyolefin foam and a thermoplastic polyolefin are used as a cover layer, since they belong to the same family of compounds.
  • Figure 1 shows the results of elongation at break tests of composite structures according to the invention (Example 1: dashed line, Example 2: dotted line) and a composite structure of the prior art (C212: solid line).
  • the composite structure according to the invention comprises a foam layer, a textile layer, a cover layer and a lacquer layer in this order, wherein the foam layer has a density of at most 300 kg / m 3 and contains a polyolefin, preferably polypropylene, which
  • Cover layer is thermoplastic and comprises at least two compact sub-layers of different composition, each sub-layer at least one below polyolefin and
  • Polyvinyl chloride contains selected thermoplastics.
  • thermoplastic polyolefin if all three sub-layers contain or consist of a thermoplastic polyolefin, which have the same composition as the inner sub-layer of the outer layer and the outer sub-layer of the textile layer, and the middle sub-layer has a different composition
  • the PVC layer which is in contact with the textile layer serves as an adhesive layer.
  • the composite structure according to the invention comprises a
  • polypropylene-based, sharpened foam layer having a thickness of 1.0 to 5.0 mm, a textile layer having a thickness of 0.05 to 1.0 mm, a cover layer having a thickness of 0.2 to 1.0 mm and a
  • Lacquer layer of a thickness of 1 to 30 pm in this order, wherein the foam layer has a density of 50 to 100 kg / m 3 , the cover layer is thermoplastic and at least two compact Partial layers of different composition, wherein each partial layer contains at least one thermoplastic material selected from polyolefin and polyvinyl chloride, wherein the
  • Composite structure has a Shore A hardness of 20 to 45 and optionally an elongation at break of 80 to 220%.
  • the composite structure according to the invention is preferably as a tearable cover for a
  • Airbag cover suitable suitable.
  • suitable as a tearable cover for an airbag cover means that the composite structure according to the invention is arranged in an area of the airbag cover where the predetermined breaking point of the cover is located Tearing of the composite structure according to the invention.
  • the composite structure according to the invention can have the desired properties, for.
  • easy sewing processability the composite structure should not be too hard. Therefore, the Shore A hardness of the composite structure of the present invention is preferably 20 to 45, and more preferably 30 to 45.
  • the composite structure according to the invention preferably has no material weakening.
  • material weakening may mean any physical weakening and may refer, for example, to an area where material has been removed to form frangible lines, or a tear seam or perforation line
  • the composite structure according to the invention is preferably "without weakening", the said weakening of the material is therefore not present in the composite structure according to the invention.
  • Elongation at break (according to ISO 1421) of the composite structure according to the invention is preferably between 60 and 250%, more preferably between 80 and 220% and even more preferably between 100 and 200%.
  • the elongations at break of the other layers of the composite structure are in the same range, with the difference in breaking elongation of each layer to the breaking elongation of the composite being less than 50%, more preferably less than 20% and even more preferably less than 10%.
  • the adhesion between the individual layers is according to ISO 2411 preferably so high that a separation of two layers, ie of the cover layer and textile layer and textile layer and
  • Foam layer without destruction of the layers is not possible.
  • the separation of the foam layer from a textile layer bonded thereto without destruction of the foam layer is not possible.
  • This goal can be achieved by properly selecting the type of adhesive that bonds the foam layer to the textile layer.
  • the composite structure according to the invention has a suitable puncture breaking strength. This is preferably at least 40 N according to DIN EN ISO 23910.
  • the foam layer contains polyolefin foam or consists of polyolefin foam.
  • the polyolefins can be used, which below with respect to the
  • thermoplastic polyolefins are described.
  • the foam layer consists of or contains polypropylene foam (PP foam) in a preferred embodiment.
  • Polypropylene (PP) is understood here to mean those polymers or copolymers whose proportion by weight of propylene is> 50% by weight.
  • additives such as e.g. Lubricants, stabilizers, fillers, such as inorganic fillers, and / or pigment may be included.
  • thermoplastic polyolefins (TPO) described below with respect to the cover layer can also be used for the foam layer.
  • the preferred polypropylene used may be selected from the group consisting of polypropylene, polypropylene-ethylene copolymer, metallocene-polypropylene, metallocene-polypropylene-ethylene copolymer, polypropylene-based polyolefin plastomer, polypropylene-based
  • Polypropylene-based thermoplastic polyolefin blend is flomopolypropylene and / or polypropylene-ethylene copolymer and / or metallocene flomopolypropylene.
  • the thickness of the foam layer is preferably 1.0 to 5.0 mm, more preferably 2.0 to 5.0 mm, and even more preferably 3.0 to 4.5 mm.
  • the density of the foam layer is preferably less than 300 kg / m 3 , more preferably less than 200 kg / m 3, and even more preferably less than 100 kg / m 3 .
  • the density of the foam layer is more preferably in a range of 30 to 300 kg / m 3 , more preferably 30 to 150 kg / m 3, and even more preferably 40 to 100 kg / m 3 .
  • a measure of the softness of the foam layer is the gel content.
  • the gel content is an indication of the degree of crosslinking of the polymer. The lower the gel content, the softer the foam layer.
  • the foam layer used in the composite structure of the present invention has a gel content of preferably 20 to 80%, more preferably 30 to 60%, and even more preferably 40 to 60%.
  • the foamed layer is preferably formed by foam extrusion.
  • the layer of foamed plastic is generated by the fact that the plastic melt during the
  • an inert gas is advantageously used as blowing agent or a blowing agent is used which contains an inert gas.
  • Suitable inert gases in the process are all inert gases known to the person skilled in the art, CO2 or N2 having proven to be particularly advantageous with regard to price, environmental compatibility and foaming behavior.
  • the foam material may then be, e.g. thermally or by gluing, with the compact two-ply cover layer, be joined in the form of a sheet material, so that a multilayer plastic film is formed with a foamed layer. It is also possible to first bond the foam layer to the inner layer and then attach the outer layer to the inner layer.
  • the foam contained in the foam layer may be open-cell or closed-cell.
  • a so-called sharpened foam is obtained
  • the web of foam is sharpened such that, for example, at least 2%, 5%, 10% or 20% of the thickness of a region or the whole Web is removed on one or both surfaces, with preferred ranges being 2 to 20% or 5 to 15% on one or both surfaces, the sharpened web then having a thickness of preferably 1 to 5 mm Foam film is significantly softer, and the material can be better handled in the process of making the Näh Stationer and laminating.
  • the foam can before forming d he sharpened composite structure, wherein one or both surfaces can be sharpened. Both surfaces are preferred over the entire surface sharpened. After joining the foam with the cover layer or with the textile layer, it can be sharpened on the still free surface.
  • sharpened open-faced foam also has the advantage that, in the bonding area with another layer, the material of that other layer or adhesive can penetrate into the open cells and a firmer bond can be achieved by the anchoring thus obtained.
  • Sharpening in the seam area may be performed with a sharpening machine, e.g. FORTUNA NG6 (rotating bell knife with adjustable blade speed).
  • FORTUNA NG6 rotating bell knife with adjustable blade speed
  • the foam layer can be reduced to half the original thickness.
  • the reduction in foam thickness is preferably such that the thickness in the seam region does not differ from the thickness in the adjacent, non-thickness-reduced region or at most 50%, preferably at most 30%, more preferably at most 20% and even more preferably at most 10% greater.
  • the properties of the composite structure are chosen so that sufficient seam strength according to DIN ISO 23910 is achieved, without an extra introduced sewing aid, e.g. a thin textile, must be used.
  • the seam strength is partly due to the thickness and structure of the
  • the foam layer has, for example, a thickness of 3.5 mm.
  • the cover layer has, for example, a thickness of 0.5 mm.
  • the total thickness is therefore 4.0 mm. If the overall thickness is to be retained when the seam lug of a composite structure is folded over, 4.0 mm must be removed in this area. This can be achieved by removing 2.0 mm of the foam layer so that the foam layer only has a thickness of 1.5 mm. When this area is folded over, the overlap area then leaves a 3.0 mm foam overall thickness, so that the properties of the composite structure in this area and the properties of the composite structure in other areas are at least similar.
  • a foam layer is contained, which has been subjected to a full-surface sharpening of at least one surface, in particular both surfaces. Even more preferred is a foam layer which has undergone both full surface sharpening of both surfaces as well as seam sharpening.
  • polyolefins examples include 15 to 75 parts by weight of an olefin block copolymer and 25 to 85 parts by weight of a propylene-based polymer and have a crosslinking degree of 20 to 75%. These polyolefins preferably contain closed cells.
  • the degree of crosslinking may be from 30 to 50%, with cross-links being made with from 3 to 4 parts by weight of divinylbenzene crosslinker per 100 parts by weight of the resin.
  • polyolefins which can be prepared, for example, according to US 9260577B2, have the following properties:
  • the cover layer is thermoplastic. It contains a thermoplastic polyolefin (TPO) and / or a thermoplastic polyvinyl chloride (PVC). Preferably, the cover layer consists of a TPO or PVC.
  • TPO thermoplastic polyolefin
  • PVC thermoplastic polyvinyl chloride
  • the cover layer consists of a TPO or PVC.
  • a layer "contains" TPO or PVC means that it preferably consists of at least 30% by weight, more preferably at least 50% by weight and even more preferably 100%, of TPO or PVC
  • the expression that a layer "bases" on TPO or PVC means that it consists of at least 50% by weight, preferably 100%, of TPO or PVC.
  • the cover layer has at least two partial layers.
  • the sub-layer closest to the foam layer is referred to as the inner sub-layer.
  • the partial layer closest to the lacquer layer is referred to as the outer layer. If there are three sub-layers, the intermediate sub-layer is called the middle sub-layer.
  • the cover layer comprises two or three partial layers.
  • the cover layer consists of or contains a thermoplastic selected from TPO and / or PVC.
  • the thermoplastic is in at least one of the sub-layers and preferably in all Partial layers included. If both TPO and PVC are included, they may be contained in the same sub-layer or in different sub-layers.
  • the bonding between the outer layer, the middle layer and the inner layer can be done in the usual way, e.g. thermally or by gluing.
  • the Shore A hardness of the cover layer is at most 90, more preferably at most 85, and in the case of a PVC-based cover layer at most 60, more preferably at most 50.
  • a range of 30 to 60 is preferred, and 30 to 50 is more preferred.
  • the material composition of the outer layer material and that of the inner layer material is different. This can be done, for example, by varying the type and / or proportions of the polymers used and / or varying the amount and / or type of the additives, in particular fillers. With three or more layers, the material composition of adjacent layers is different. Therefore, you can
  • three layers have the inner and the outer same composition.
  • the thickness of the cover layer is preferably 0.2 to 1 mm, more preferably 0.2 to 0.7 mm, and even more preferably 0.3 to 0.6 mm.
  • the partial layers may have the same or different thickness. In one embodiment, with two layers, the outer layer may be thicker than the inner one.
  • both have a thickness of preferably 100 to 400 ⁇ m, more preferably 100 to 250 ⁇ m. In the case of three partial layers, all preferably have a thickness of from 70 to 250 ⁇ m, more preferably from 100 to 200 ⁇ m.
  • two partial layers of PVC both have a thickness of preferably 100 to 500 pm. In the case of three partial layers, all preferably have a thickness of from 100 to 600 ⁇ m, more preferably from 150 to 500 ⁇ m.
  • this layer preferably has a thickness of 20 to 80 ⁇ m, and the other two
  • Partial layers of PVC preferably have a thickness of 100 to 600 pm, more preferably 150 to 500 pm.
  • the cover layer is compact.
  • the cover layer is not foamed.
  • the density of the cover layer is preferably higher than 800 kg / m 3, and more preferably higher than 850 kg / m 3 . This applies independently for each sublayer.
  • the structure according to the invention contains at least two compact partial layers in the cover layer. That is, each of the two sub-layers has a density of preferably higher than 800 kg / cm 3 .
  • the gel content for the cover layer is also a measure of the softness of the layer.
  • the topcoat used in the composite structure according to the invention has a gel content from preferably 0 to 20%, more preferably from more than 0% to at most 20%.
  • the gel content is more preferably 3 to 20% or 5 to 20%.
  • the gel content is more preferably 1 to 10% or 1 to 5%.
  • the cover layer used in one embodiment in the composite structure according to the invention contains or consists of thermoplastic polyolefin.
  • TPO Thermoplastic polyolefins are polyolefins are polymers that
  • alkenes such as ethylene, propylene, 1-butene or isobutene by chain polymerization. They are semi-crystalline thermoplastics that are easy to process.
  • TPO polyethylene
  • PP polypropylene
  • PMP polymethylpentene
  • PIB Polyisobutylene
  • PB polybutylene
  • PE polyethylene
  • Polypropylene is understood here to mean those polymers or copolymers whose proportion by weight of propylene is> 50% by weight.
  • TPO examples of TPO are blends of polyethylene (PE) and polypropylene (PP).
  • PE examples include HDPE, LDPE and LLDPE.
  • HDPE has weakly branched polymer chains and therefore has a high density between 0.94 g / cm 3 and 0.97 g / cm 3 , with a stress at the
  • LLDPE Yield strength of 20.0 to 30.0 N / mm 2 and an elongation of 12% of the yield strength.
  • LDPE has highly branched polymer chains and therefore has a low density between 0.915 g / cm 3 and 0.935 g / cm 3 , with a stress at the yield strength of 8.0 to 10.0 N / mm 2 and elongation of 20% at the yield point.
  • LLDPE is a linear low density polyethylene whose polymer molecules have only short branches and has a stress at the yield strength of 10.0 to 30.0 N / mm 2 and an elongation of 16% at yield strength.
  • TPO can be influenced by admixing elastomers or other substances such as talc.
  • TPO can be made hard or soft.
  • Hard TPO exists z. B. to 75% of PP and talc.
  • Soft TPO has a significantly higher elastomer content, sometimes up to 70%.
  • thermoplastic elastomers can be added. These are also thermoplastics that behave elastically in the range of normal use temperatures, but can be processed at a higher temperature such as thermoplastics.
  • copolymers are random copolymers or block copolymers. The former consist of a main polymer such. As polyethylene, its degree of crystallization by a random built-in along the chain Comonomer such. B. vinyl acetate is reduced so far.
  • block copolymers the hard and soft segments are sharply separated in one molecule (eg SBS, SIS).
  • copolymers may consist of a soft elastomeric and a hard thermoplastic component.
  • Elastomeric alloys are blends of finished polymers. Due to different mixing ratios and aggregate you get desired properties. For example, depending on the quantitative ratio, a polyolefin elastomer of polypropylene (PP) and natural rubber (NR) covers a wide range of hardness.
  • PP polypropylene
  • NR natural rubber
  • TPO examples include blends of ethylene-propylene-diene rubber (EPDM) with polyethylene (PE) and / or polypropylene (PP), blends of ethylene-propylene rubber (EPM) with polypropylene (PP) and / or polyethylene (PE ) and ethylene-propylene blends.
  • EPDM ethylene-propylene-diene rubber
  • PP polypropylene
  • EPM ethylene-propylene rubber
  • the outer layer used in one embodiment in the composite structure according to the invention contains or consists of thermoplastic polyvinyl chloride (PVC).
  • PVC thermoplastic polyvinyl chloride
  • the properties of PVC are adjusted by the addition of plasticizers.
  • the addition of plasticizers gives the polymer plastic properties, such as flexibility and softness.
  • plasticizers give the polymer plastic properties, such as flexibility and softness.
  • phthalic acid esters can phthalic acid esters, chloroparaffins, adipic acid esters, phosphoric acid esters
  • PVC can be up to 40
  • PVC can be added to improve the physical properties, such as toughness and elasticity, as well as to improve the processability with additives.
  • additives are stabilizers and impact modifiers.
  • PVC without plasticizer can have elongation at break / tear strength
  • the inner cover layer is a PVC layer, it can simultaneously serve as an adhesive for adhering to the textile layer.
  • the surface finish is used to protect the artificial leather from chemical agents, physical damage, such as scratches or abrasion, and UV radiation.
  • the surface finish can further reduce the surface adhesion of the artificial leather.
  • lacquers which are suitable for surface refinement of artificial leather for the interior sector have proven of vehicles.
  • solvent- or water-based polyurethanes which are cross-linked with isocyanates or provided with properties for UV curing are suitable.
  • the surface coating is preferably formed continuously over the composite structure and covers it completely.
  • the surface coating is formed from at least one lacquer layer, but may be formed from a plurality of lacquer layers, preferably it is formed from one to four lacquer layers.
  • the surface finish for protecting the surface usually consists of one or more, preferably up to four, transparent lacquer layers.
  • the surface finish may also be colored, e.g. by adding
  • the surface coating is formed by applying a lacquer in one or preferably several jobs.
  • the coating is preferably done by gravure but can also be done with other methods, such as. Roller application, spray application or in one
  • the surface finish may be applied in the form of a lacquer layer in a two-stage roller printing process.
  • the surface coating has a thickness in the range of a few micrometers, preferably 1 to 30 ⁇ m, more preferably 1 to 20 ⁇ m and even more preferably 3 to 10 ⁇ m.
  • the lacquer layer is preferably a polyurethane lacquer layer.
  • An example of a surface finish is a paint based on a silicone-containing aliphatic polyurethane. This paint can be applied in a thickness of for example 5 pm.
  • the composite structure preferably has a grain.
  • the compact cover layer or outer layer of the cover layer preferably has on the upper side a three-dimensionally structured surface, namely a so-called graining, which can be found in a wide variety of shapes and forms
  • the grain has heights and depths, wherein the thickness of the cover layer in the region of the heights of the thickness of the cover layer in the region of the depths, for example by at least 0.01 mm, by at least 0.05 mm, by at least 0.1 mm or at least 0.5 mm different.
  • the graining is covered with the varnish layer.
  • the graining may be present in the varnish layer as well as in the topcoat, depending on the manufacturing process. If the
  • the grain can be produced by conventional methods.
  • the grain can as
  • Paper color are generated.
  • the starting material is applied as a PVC or PU mass to a structured support material, e.g. a releasepaper, deleted. After that, that will
  • the graining or embossing is preferably introduced by means of embossing roller with the application of pressure and temperature after painting in the artificial leather surface. Due to the grain, the composite structure has areas of greater and lesser thickness.
  • the textile layer contains or consists of a textile material.
  • the textile material may be, for example, a woven fabric, a non-woven fabric or a knit fabric.
  • the textile material may be made, for example, of natural materials, e.g. cotton, or man-made fibers of natural and synthetic raw materials, e.g. Polyamide, polyester, or glass fibers, but also out
  • the textile material is a mesh structure, i. H. a knitted or knitted fabric so that fully assembled parts can be produced.
  • a mesh structure i. H. a knitted or knitted fabric so that fully assembled parts can be produced.
  • This has the advantage that with the elasticity typical of mesh structures, the fully assembled parts have an optimum fit, so that they can be used without further processing steps.
  • the textile layer may be bonded to the adjacent layers by means of adhesive.
  • the textile layer is bonded with an adhesive both to the foam layer and to the cover layer.
  • the partial layer of the cover layer adjoining the textile layer is a PVC layer, it is possible to dispense with an adhesive between the textile layer and the cover layer.
  • the PVC layer serves as an adhesive.
  • textile material is preferably processed with lower tear resistance.
  • the thickness of the textile layer is preferably 0.05 to 2.0 mm, more preferably 0.1 to 1.0 mm, and even more preferably 0.2 to 0.8 mm.
  • the adhesive used in the present invention is preferably a conventional hot melt adhesive known in the art.
  • the adhesive is used, for example, in a thickness of 40 pm.
  • a preferred hot melt adhesive is based on polyurethane (PUR).
  • Lacquer layer may have adhesive properties, so they without the addition of another adhesive can firmly stick together.
  • the adhesive referred to in the present invention therefore refers to a material that differs from the material of the respective layers involved
  • Another preferred embodiment of the composite structure according to the invention comprises a foam layer, an adhesive layer, a textile layer, an adhesive layer, a cover layer and a lacquer layer in this order.
  • the cover layer contains a partial layer of PVC adjacent to the foam layer, it can serve as an adhesive layer.
  • Fracture resistance test according to VDA 230-225 is used, then the fold area was subjected to a load of 1.4 kg for one minute, the sample piece removed, placed on a flat surface and then visually assessed as to whether the sample piece in the
  • Adhesive polymer / foam, polymer / textile and textile / foam ISO 2411
  • Faux leathers of the composition given in Table 1 were produced.
  • the arrangement of the sublayers from top to bottom shown in Table 1 corresponds to the arrangement from the outside inwards in the composite structure, that is to say in the direction of
  • Lacquer layer to the foam layer.
  • the synthetic leather of Comparative Example 1 has the following structure:
  • Layer 0 Lacquer based on silicone-containing aliphatic polyurethane, approx. 5 ⁇ m thick
  • Layer 1 compact TPO layer (about 130 ⁇ m layer thickness)
  • Layer 2 compact TPO layer (about 130 ⁇ m layer thickness)
  • Layer 3 compact TPO layer (about 130 ⁇ m layer thickness)
  • Layer 4 Polypropylene foam (3500 to 4000 ⁇ m layer thickness, sharpened foam) Layers 1 to 3 correspond to layers AA-B in Table 1.
  • the composite structure can be produced by a process comprising the following steps:
  • An alternative method comprises the following steps:
  • the artificial leather of Example 1 has the following structure:
  • Layer 0 Lacquer based on silicone-containing aliphatic polyurethane, about 5 ⁇ m thick
  • Layer 1 compact TPO layer (about 130 ⁇ m layer thickness)
  • Layer 2 compact TPO layer (about 130 ⁇ m layer thickness)
  • Layer 3 compact TPO layer (about 130 ⁇ m layer thickness)
  • Layer 4 100% polyester textile, 400 to 600 ⁇ m thick
  • Layer 5 Polypropylene foam (3500 to 4000 pm layer thickness, sharpened foam)
  • Layers 1 to 3 correspond to layers A-B-A in Table 1.
  • the composite structure can be produced by a process comprising the following steps:
  • Step (v) may be performed before step (iv).
  • An alternative method comprises the following steps:
  • the artificial leather of Example 2 has the following structure:
  • Layer 0 Lacquer based on silicone-containing aliphatic polyurethane, about 5 ⁇ m thick
  • PVC foam layer (about 430 ⁇ m layer thickness) (PVC2)
  • Layer 3 compact adhesive layer based on PVC (approx. 40 ⁇ m layer thickness) (PVC3)
  • Layer 4 100% polyester textile, 400 to 600 ⁇ m thick
  • Layer 5 Polypropylene foam (3500 to 4000 pm layer thickness, sharpened foam)
  • PVC3 serves as an adhesive layer.
  • Layers 1 to 3 correspond to layers PVC1 to PVC3 in Table 1.
  • the composite structure can be produced by a process comprising the following steps:
  • Experiment 1 Wrinkling after 1 minute of room temperature buckling at a load of 1.4 kg.
  • Experiment 2 Wrinkling after each 1 minute of bending at room temperature and 90 ° C at a load of 1.4 kg.
  • the wrinkling was graded after bending in the longitudinal, transverse and diagonal directions:
  • Airbag tearing properties were examined at -35 ° C, 23 ° C and 85 ° C.
  • thermoplastic polyolefin partial layers having the following Shore A hardness (ShA) were used: XAKU: ShA 71; XZCI: ShA 86; XAKY: ShA 77; XAKJ: ShA 86; XZTE: ShA 68.
  • the textile layer used was polyester (PES) and the foam layer used was polypropylene (PP). The results are shown in Table 1.
  • the artificial leather C212 has a material weakening introduced by laser treatment and has the following structure:
  • Layer 0 Lacquer based on silicone-containing aliphatic polyurethane, approx. 5 ⁇ m thick
  • Layer 1 compact TPO layer (about 190 ⁇ m layer thickness)
  • Layer 2 compact TPO layer (about 190 ⁇ m layer thickness)
  • Layer 3 compact TPO layer (about 190 ⁇ m layer thickness)
  • Layer 4 Polypropylene foam (2000 ⁇ m layer thickness, no sharpened foam)
  • the composite structure C212 can be produced by a process comprising the following steps:
  • the composite structure C212 is prepared by the following method:
  • the synthetic leather PVC / Spacer has the following structure:
  • Layer 0 Lacquer based on silicone-containing aliphatic polyurethane, approx. 5 ⁇ m thick
  • Layer 1 compact PVC layer (about 230 ⁇ m layer thickness)
  • Layer 2 compact PVC layer (about 230 ⁇ m layer thickness)
  • Layer 3 spacer textile (spacer) (3500 to 4000 ⁇ m layer thickness)
  • Figure 1 shows the excellent elongation at break properties of the invention

Landscapes

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

Abstract

La présente invention concerne une structure composite, un procédé pour la fabriquer, un produit cousu contenant ladite structure composite, ainsi qu'un procédé de fabrication du produit cousu. La structure composite comporte une couche de mousse, une couche textile, une couche de recouvrement et une couche de vernis, disposées dans l'ordre énoncé, la couche de mousse présentant une masse volumique d'au plus 300 kg/m3 et contenant une polyoléfine, la couche de recouvrement étant thermoplastique et comprenant au moins deux couches partielles compactes de composition différente, chaque couche partielle contenant au moins un thermoplastique sélectionné parmi polyoléfine et polychlorure de vinyle.
EP19704656.8A 2018-03-01 2019-02-19 Structure composite pour couvercle d'airbag et produit cousu de la structure composite Withdrawn EP3758930A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18159410.2A EP3533601B1 (fr) 2018-03-01 2018-03-01 Structure composite pour volet de recouvrement de coussin gonflable de sécurité et article à coudre de la structure composite
PCT/EP2019/054114 WO2019166287A1 (fr) 2018-03-01 2019-02-19 Structure composite pour couvercle d'airbag et produit cousu de la structure composite

Publications (1)

Publication Number Publication Date
EP3758930A1 true EP3758930A1 (fr) 2021-01-06

Family

ID=61526726

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18159410.2A Active EP3533601B1 (fr) 2018-03-01 2018-03-01 Structure composite pour volet de recouvrement de coussin gonflable de sécurité et article à coudre de la structure composite
EP19704656.8A Withdrawn EP3758930A1 (fr) 2018-03-01 2019-02-19 Structure composite pour couvercle d'airbag et produit cousu de la structure composite

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP18159410.2A Active EP3533601B1 (fr) 2018-03-01 2018-03-01 Structure composite pour volet de recouvrement de coussin gonflable de sécurité et article à coudre de la structure composite

Country Status (5)

Country Link
US (1) US11577488B2 (fr)
EP (2) EP3533601B1 (fr)
CN (1) CN112041156A (fr)
PT (1) PT3533601T (fr)
WO (1) WO2019166287A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019211060A1 (de) * 2019-07-25 2021-01-28 Konrad Hornschuch Ag Abdeckmaterial
CN115960403A (zh) * 2021-10-13 2023-04-14 贝内克-长顺汽车内饰材料（张家港）有限公司 热塑性聚烯烃弹性体组合物及由其制备而成的热塑性聚烯烃弹性体人造革
CN116836616A (zh) * 2022-03-23 2023-10-03 贝内克-长顺汽车内饰材料（张家港）有限公司 一种用于皮革涂层的水性漆和相应皮革材料
EP4261030A1 (fr) * 2022-04-14 2023-10-18 TMG Tecidos Plastificados e Outros Revestimentos Para A Industria Automovel SA Matériau pvc multicouche, son procédé d'obtention et ses utilisations
WO2023199260A1 (fr) * 2022-04-14 2023-10-19 Tmg Tecidos Plastificados E Outros Revestimentos Para A Industria Automovel Sa Matériau en pvc multicouche, son procédé d'obtention et ses utilisations
WO2023217899A1 (fr) 2022-05-11 2023-11-16 TMG - Tecidos Plastificados e Outros Revestimentos para a Indústria Automóvel, S.A. Structure composite élastique contenant une couche textile
EP4275881A1 (fr) 2022-05-11 2023-11-15 TMG - Tecidos Plastificados e Outros Revestimentos para a Indústria Automóvel, S.A. Structure composite élastique comprenant une couche textile
WO2023232272A1 (fr) 2022-06-03 2023-12-07 TMG - Tecidos Plastificados e Outros Revestimentos para a Indústria Automóvel, S.A. Feuille contenant un élastomère thermoplastique, procédé de préparation et utilisation
EP4360875A1 (fr) 2022-10-25 2024-05-01 TMG - Tecidos Plastificados e Outros Revestimentos para a Indústria Automóvel, S.A. Feuille contenant un élastomère styrénique thermoplastique, procédé de préparation et utilisation
WO2024088671A1 (fr) 2022-10-25 2024-05-02 TMG - Tecidos Plastificados e Outros Revestimentos para a Indústria Automóvel, S.A. Feuille contenant un élastomère styrénique thermoplastique, procédé de préparation et utilisation

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100383482B1 (ko) 1995-02-17 2003-09-26 컨비니언스 푸드 시스템스 비.브이. 폴리올레핀폼층을가지는포장재료의제조방법
SG60151A1 (en) * 1996-11-15 1999-02-22 Sumitomo Chemical Co Propylene-1-butene copolymer
DE19648138A1 (de) * 1996-11-21 1998-05-28 Opel Adam Ag Luftsackabdeckung
JP2001291591A (ja) * 2000-04-07 2001-10-19 Sony Corp 有機電界発光素子及び発光装置
US6581959B2 (en) * 2000-06-29 2003-06-24 Volkswagen Ag Airbag device and operating method for it as well as vehicle interior paneling with it
DE10244311B4 (de) * 2002-09-23 2019-01-03 Volkswagen Ag Innenausstattungsteil für Fahrzeuge und Verfahren zur Herstellung desselben
DE10345026B4 (de) * 2003-09-24 2007-07-19 Faurecia Innenraum Systeme Gmbh Innenverkleidungsteil zur Abdeckung eines Airbags
WO2011008845A1 (fr) 2009-07-14 2011-01-20 Toray Plastics (America), Inc. Feuille de mousse de polyolefine reticulee presentant des proprietes exceptionnelles de souplesse, d'haptique, de moulabilite, de stabilite thermique et de resistance au cisaillement
DE102011000399A1 (de) * 2011-01-28 2012-08-02 Benecke-Kaliko Ag Verfahren zur Herstellung einer mehrschichtigen Kunststofffolie
US8807590B2 (en) 2011-08-23 2014-08-19 Faurecia Interior Systems, Inc Multi-layer vehicle airbag coverings
DE102014213974A1 (de) 2014-07-17 2016-01-21 Benecke-Kaliko Ag Folie für Airbaganwendungen
DE102016206340A1 (de) * 2016-04-15 2017-10-19 Benecke-Kaliko Ag Folienlaminat und Innenverkleidungsteil für Kraftfahrzeuge

Also Published As

Publication number Publication date
EP3533601B1 (fr) 2022-06-15
PT3533601T (pt) 2022-08-09
WO2019166287A1 (fr) 2019-09-06
US11577488B2 (en) 2023-02-14
EP3533601A1 (fr) 2019-09-04
US20210001594A1 (en) 2021-01-07
CN112041156A (zh) 2020-12-04

Similar Documents

Publication Publication Date Title
EP3533601B1 (fr) Structure composite pour volet de recouvrement de coussin gonflable de sécurité et article à coudre de la structure composite
EP3169515B1 (fr) Feuille pour application aux sacs gonflables
WO2017178127A1 (fr) Stratifié de feuilles et partie d'habillage intérieur pour véhicules à moteur
EP3758929A1 (fr) Structure composite pour revêtement de coussin gonflable de sécurité et produit cousu de la structure composite
EP2117881B1 (fr) Feuille thermoplastique pour couvercle de coussin gonflable
EP3362278B1 (fr) Stratifié de feuilles et partie d'habillage intérieur pour véhicules automobiles
EP3592552B1 (fr) Stratifié mousse-polyoléfine à reprise
EP3554809A1 (fr) Procédé pour la fabrication d'une feuille laquée chagrinée, feuille laquée chagrinée et utilisation correspondante
EP0694443A1 (fr) Couvercle pour airbag
EP1004418B1 (fr) Revêtement intérieur de véhicules automobiles et procédé pour sa fabrication
EP2101998A2 (fr) Film thermoplastique présentant une feuille de recouvrement expansée
EP3233483B1 (fr) Film composite apte à l'emboutissage et au gaufrage et procédé de fabrication et utilisation dudit film
DE102008025931A1 (de) Thermoplastische Folie für Airbag-Abdeckungen
EP3717231A1 (fr) Stratifié de feuilles en matière plastique présentant une densité moyenne de mousse
DE102020130933A1 (de) Automobil-Crashpad und Verfahren zur Herstellung davon
DE102012109966A1 (de) Innenausstattungsteil für ein Kraftfahrzeug
EP3147120A1 (fr) Materiau composite pour la fabrication d'objets moules, objet moule et procede de fabrication de l'objet moule

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200930

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

17Q First examination report despatched

Effective date: 20220128

18W Application withdrawn

Effective date: 20220208