# US 6,899,363 B2 · Method of forming a vehicle component > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,899,363 B2 - Document ID: US6899363B2 - Status: Granted - Kind: B2 - Application number: 10/368,817 - Filed: 2003-02-19 - Published: 2004-09-16 - Granted: 2005-05-31 - Earliest claimed: 2003-02-19 - Assignees: Lear Corporation - Inventors: Alan G. Dry - Web page: https://patentgrep.com/patent/US6899363B2 ## CPC - B29C 45/2628: {with mould parts forming holes in or through the moulded article, e.g. for bearing cages} - B29C 45/1675: {using exchangeable mould halves} - B29C 45/1657: {using means for adhering or bonding the layers or parts to each other (mechanical anchoring B29C37/0082)} - B29C 45/1676: {using a soft material and a rigid material, e.g. making articles with a sealing part} - B29L 2031/3005: {Body finishings} - B29L 2031/3026: {Arm-rests} - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract A method of manufacturing a vehicle trim component assembly includes providing a first mold assembly comprising a first mold section and a second mold section. The first mold assembly defines a first cavity. A third mold section is then provided. The third mold section and the first mold section combine to define a second mold assembly. The second mold assembly defines a second cavity. A pin is provided and extends from a first mold surface of the first mold section into the first cavity and into a portion of the second cavity. A first material is introduced into the first cavity, thereby producing a first trim component portion. The pin defines a first void portion in the first trim component portion. The second mold section is then replaced with the third mold section to define the second cavity of the second mold assembly. A second material is then introduced into the second cavity, thereby producing a second trim component portion. The pin further defines a second void portion in the second trim component portion. The first trim component portion and the second trim component portion form a trim component assembly. ## Claims ### Claim 1 A method of manufacturing a vehicle trim component assembly, the method comprising the steps of: a. providing a first mold assembly comprising a first mold section and a second mold section, the first mold assembly defining a first cavity; b. providing a third mold section, wherein the third mold section and the first mold section combine to define a second mold assembly, the second mold assembly defining a second cavity; c. providing a pin extending from a first mold surface of the first mold section into the first cavity and into a portion of the second cavity; d. introducing a first material into the first cavity, thereby producing a first trim component portion, the pin defining a first void portion in the first trim component portion; e. replacing the second mold section with the third mold section to define the second cavity of the second mold assembly; and f. introducing a second material into the second cavity, thereby producing a second trim component portion, wherein the pin defines a second void portion in the second trim component portion, and wherein the first trim component portion and the second trim component portion form a trim component assembly. ### Claim 2 (depends on 1) The method according to claim 1, further including a step (g) wherein the second trim component portion is chemically bonded to the first trim component portion to form a trim component assembly. ### Claim 3 (depends on 1) The method according to claim 1, further including a step (g) wherein the second trim component portion is mechanically bonded to the first trim component portion to form a trim component assembly. ### Claim 4 (depends on 1) The method according to claim 1, wherein the first material is different from the second material. ### Claim 5 (depends on 1) The method according to claim 1, wherein the pin is movable between a first position wherein the pin extends only into the first cavity and a second position wherein the pin extends into both the first cavity and a portion of the second cavity. ### Claim 6 (depends on 1) The method according to claim 1, wherein the first trim component portion has a first hardness, and the second trim component portion has a second hardness different from the first hardness. ### Claim 7 (depends on 6) The method according to claim 6, wherein the first hardness is relatively harder than the second hardness. ### Claim 8 (depends on 1) The method according to claim 1, including a plurality of pins extending from a first mold surface of the first mold section into the first cavity and into a portion of the second cavity, the pins defining a plurality of first void portions in the first trim component portion. ### Claim 9 (depends on 8) The method according to claim 8, wherein the plurality of pins includes pins having a plurality of different shapes. ### Claim 10 (depends on 8) The method according to claim 8, wherein a distal end of each of the plurality of pins includes a substantially castellated shape. ### Claim 11 (depends on 8) The method according to claim 8, wherein the pins are movable between a first position in which the pins extend only into the first cavity and a second position in which the pins extend into both the first cavity and the second cavity. ### Claim 12 (depends on 8) The method according to claim 8, wherein the plurality of pins define a gradient of voids along a lateral direction, such that an outboard side of the trim component assembly has a lessor volume of the first and the second material than an inboard side of the trim component assembly. ### Claim 13 (depends on 8) The method according to claim 8, wherein the pins are tapered from a first end to a second end, thereby forming tapered voids. ### Claim 14 (depends on 13) The method according to claim 13, wherein the tapered voids are wider at a bottom side of the trim component assembly and narrower at a top side of the trim component assembly. ### Claim 15 (depends on 8) The method according to claim 8, wherein the trim component assembly is a vehicle armrest assembly installed on a vehicle door; and wherein the pins form a pattern of voids, the voids at an outboard side of the armrest assembly being relatively larger than the voids at an inboard side of the armrest assembly, and arranged such that the outboard side of the armrest assembly will collapse prior to the inboard side of the armrest assembly when the vehicle door experiences a side impact on the vehicle door on which the armrest assembly is installed.