# US 10,864,851 B2 · Backlit decorative surface, particularly for the interior finishing of motor vehicles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,851 B2 - Document ID: US10864851B2 - Status: Granted - Kind: B2 - Application number: 16/347,225 - Filed: 2017-10-04 - Published: 2019-09-19 - Granted: 2020-12-15 - Earliest claimed: 2016-11-04 - Applicants: Eissmann Automotive Deutschland GmbH - Inventors: Norman Eitel; Joachim Totzl - Web page: https://patentgrep.com/patent/US10864851B2 ## CPC - B60Q 3/54: Lighting devices embedded in interior trim, e.g. in roof liners - B32B 3/266: {characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12} - B32B 5/022: {Non-woven fabric} - B32B 5/026: {Knitted fabric} - B32B 5/18: characterised by features of a layer {of} foamed material - B32B 5/245: {another layer next to it being a foam layer} - B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} - B32B 5/32: {at least two} layers being foamed {and next to each other} - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 9/025: {comprising leather} - B32B 9/047: {made of fibres or filaments} - B32B 27/12: next to a fibrous or filamentary layer - B32B 27/283: {comprising polysiloxanes} - B60Q 3/64: for a single lighting device - B60R 13/02: {Internal} Trim mouldings {; Internal} Ledges; Wall liners {for passenger compartments}; Roof liners (B60R13/01 takes precedence {; padded linings for the vehicle interior B60R21/04; arrangements or adaptations of floor mats or carpets in vehicles B60N3/04; internal lining for trains B61D17/18}) - B32B 2307/41: Opaque - B32B 2307/732: Dimensional properties - B32B 2605/003: Interior finishings - B60R 2013/0287: {integrating other functions or accessories} - C09J 175/04: Polyurethanes - B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) ## Abstract A planar decorative material (11), for interior furnishing, with perforations (12), in particular for the automotive industry, which serves to be illuminated, on its rear side (13), with a illumination device (18) and permits a part of the light of the illumination device (18) to pass from the rear side (13) of the decorative material (11) through the perforations (12) to the visible side (14) of the decorative material (11), wherein a film (20) adheres onto the rear side (13) of the decorative material (11), and the perforations (12) extend through the film (20) as far as to the visible side (14) of the decorative material (11), and the film (20) is an adhesive film activatable by increase in temperature and/or pressure, which can be permanently adhesively-bonded onto the illumination device (18) under increase in temperature to a temperature T2 and/or increase in pressure to a pressure p2. The present invention also relates to a manufacturing method. ## Claims ### Claim 1 Planar decorative material for vehicle interiors having an upper, visible side, and a lower side that is attached to an illumination device, the planar decorative material comprising: a) a first layer having an upper surface and a lower surface, the upper surface is the upper, visible side of the planar decorative material, and, b) a second layer having an upper surface and a lower surface, and the upper surface of the second layer is attached to the lower surface of the first layer, and, c) perforations that penetrate completely through both the first layer and the second layer, and, d) the lower surface of the second layer attached to the illumination device, such that a part of a light from the illumination device passes through the first layer and the second layer, and, out the visible surface of the planar decorative material, and, e) the second layer, is an adhesive film, that is activated by an increase in temperature and/or pressure, and the second layer is pre-laminated onto the lower surface of the first layer by application with increase to a first temperature T1, which is lower than a second temperature T2, and/or a first pressure increase to P1, which is lower than or equal to a second pressure P2, and, f) the second layer is permanently bonded onto the illumination device under an increase in temperature to temperature T2 and/or increase in pressure to pressure P2. ### Claim 2 (depends on 1) Planar decorative material according to claim 1, characterized in that the perforations have a cylindrical shape. ### Claim 3 (depends on 1) Planar decorative material according to claim 1, characterized in that the temperature T1 is less than 60° C. ### Claim 4 (depends on 1) Planar decorative material according to claim 1, characterized in that the temperature T1 is between 40° C. and 55° C. ### Claim 5 (depends on 1) Planar decorative material according to claim 1, characterized in that the pressure P1 is less than 20 N/cm2. ### Claim 6 (depends on 1) Planar decorative material according to claim 1, characterized in that the pressure P1 is between 10 N/cm2 and 20 N/cm2. ### Claim 7 (depends on 1) Planar decorative material according to claim 1, characterized in that the temperature T2 is at least 60° C. ### Claim 8 (depends on 1) Planar decorative material according to claim 1, characterized in that the temperature T2 is between 70° C. and 110° C. ### Claim 9 (depends on 1) Planar decorative material according to claim 1, characterized in that the pressure P2 is between 0.5 N/cm2 and 25 N/cm2. ### Claim 10 (depends on 1) Planar decorative material according to claim 1, characterized in that the pressure P2 is between 0.5 N/cm2 and 2.0 N/cm2. ### Claim 11 (depends on 1) Planar decorative material according to claim 1, wherein the second layer comprises polyurethane and an encapsulated isocyanate, which, when heated to a temperature T2 and a pressure P2, reacts with the polyurethane and thereby generates a high-strength bonding. ### Claim 12 (depends on 1) Planar decorative material according to claim 1, characterized in that the layer thickness of the film amounts to between 25 and 200 micrometers. ### Claim 13 (depends on 1) Planar decorative material according to claim 1, characterized in that the layer thickness of the second layer is between 70 and 130 micrometers. ### Claim 14 (depends on 1) Planar decorative material according claim 1, wherein the illumination device includes a light source, a light guide, a diffuser and a reflector. ### Claim 15 (depends on 14) Planar decorative material according to claim 14, wherein the illumination device is attached to a door trim, a spacer knitted fabric or a foam material. ### Claim 16 (depends on 1) Planar decorative material according to claim 1, wherein the thickness of the first layer is between 0.5 mm and 3.0 mm. ### Claim 17 (depends on 1) Planar decorative material according to claim 1, wherein the thickness of the first layer is between 0.8 mm and 2.0 mm. ### Claim 18 (depends on 1) Planar decorative material according to claim 1, wherein the diameter of the perforations is between 0.5 mm and 5 mm. ### Claim 19 A method for manufacturing a backlit decorative material for a surface of a vehicle interior, the method comprising: a) laminating a second layer onto a first decorative layer at a first temperature T1 and a first pressure P1, producing a laminated first decorative layer and second layer, and, b) perforating the laminated first decorative layer and second layer, producing a perforated and laminated first decorative layer and second layer, and, c) laminating the perforated first decorative layer and the second layer onto an illumination device under heating to a temperature T2, which is higher than the temperature T1. ### Claim 20 (depends on 19) The method according to claim 19, wherein the first decorative layer and the second layer are cut to size prior to the laminating a second layer onto a first decorative layer at a first temperature T1 and a first pressure P1. ### Claim 21 Planar decorative material for attachment to a surface of a vehicle's interior, the planar decorative material having an upper, visible side, and a lower side that is attached to the surface of the vehicle's interior, the planar decorative material comprising: a) a first layer having an upper surface and a lower surface, the upper surface is the upper, visible side of the planar decorative material, and, b) a second layer having an upper surface and a lower surface, and the upper surface of the second layer is attached to the lower surface of the first layer, and, c) perforations that penetrate completely through both the first layer and the second layer, and, d) the lower surface of the second layer attached to the surface of the vehicle's interior, and, e) the second layer, is an adhesive film, that is activated by an increase in temperature and/or pressure, and the second layer is pre-laminated onto the lower surface of the first layer by application with increase to a first temperature T1, which is lower than a second temperature T2, and/or a first pressure increase to P1, which is lower than or equal to a second pressure P2, and, f) the second layer is permanently bonded onto the surface of the vehicle's interior under an increase in temperature to temperature T2 and/or increase in pressure to pressure P2. ### Claim 22 (depends on 21) Planar decorative material according to claim 21, wherein the second layer comprises polyurethane and an encapsulated isocyanate, which, when heated to a temperature T2 and a pressure P2, reacts with the polyurethane and thereby generates a high-strength bonding.