Member for sealing, baffling or reinforcing and method of forming same
There is disclosed a member for sealing, baffling and/or reinforcing components of an automotive vehicle. The assembly generally includes a carrier and an expandable material.
1 . A method of providing sealing, baffling or reinforcement for a structure of an automotive vehicle, comprising:
providing a carrier material;
extruding a first expandable material onto the carrier material; and
cutting the carrier material and the first expandable material to form a member for sealing, baffling or reinforcement of the structure of the automotive vehicle, the member having a carrier with the first expandable material disposed thereon, wherein:
i. the first expandable material is configured to volumetrically expand to between about 140% and about 400% of its original size; and
ii. the first expandable material extends substantially entirely about the carrier.
2 . A method as in claim 1 further comprising placing the member into the structure of the automotive vehicle and expanding the first expandable material to adhere the first expandable material to walls of the structure.
3 . A method as in claim 1 wherein the carrier material is formed of a second expandable material and the second expandable material is configured to expand to between about 350% and about 1000% its original size.
4 . A method as in claim 1 , wherein the member includes one or more fasteners, which are integrally extruded as part of the carrier, the fastener is fabricated separately from the extruded carrier and connected thereto in a separate step, or a combination thereof.
5 . A method as in claim 1 wherein the carrier is cylindrical and the expandable material is annular and substantially surrounds the carrier.
6 . A method as in claim 1 , wherein providing the carrier material includes extruding the carrier material simultaneously with the expandable material, extruding the carrier material prior to the coextrusion of the expandable material upon the carrier or extruding the carrier material such that it is coextruded with the expandable material and the resulting coextrusion is further extruded to form the profile configuration.
7 . A method as in claim 1 , wherein the expandable material is adapted for forming a sealing material, an acoustical material, an adhesive, a structural foam, or a combination of at least two of the foregoing.
8 . A method as in claim 1 , wherein the expandable material is a material that is thermally deformable at the temperature of extrusion, but upon thermal activation at an elevated temperature will cross link to form a thermoset material.
9 . A method as in claim 8 , wherein the expandable material includes a plastic selected from the group consisting of thermoplastics, thermosets, or a combination thereof or a resin selected from the group consisting of an epoxy resin, a thermoplastic resin, an acetate resin, an EPDM resin, a phenoxy resin, a polyurethane resin or a combination thereof.
10 . A method as in claim 1 , wherein the carrier is formed at least partially of a material selected from a metal, a polymeric material, a carbon fiber, graphite, glass, or combinations thereof.
11 . A method as in claim 10 , wherein the polymeric material is selected from polyethylene terephthalate, high density polyethylene, polyvinyl chloride, low density polyethylene, polypropylene, polystyrene, a polycrystalline material, an amorphous material, a polyolefin, a polyamide, a polyester, polystyrene, a poly(meth)acrylate, a polyvinyl chloride, a polysulfone or a combination thereof.
12 . A method as in claim 1 wherein the expandable material includes a property or ingredient selected from a flame retardant, water remediation ingredient, an electrically conductive ingredient, a sound absorption characteristic.
13 . A method as in claim 1 wherein the expandable material is disposed upon the carrier by cross-head extrusion.
14 . A method of providing sealing, baffling or reinforcement for a structure of an automotive vehicle, comprising:
providing a carrier material;
extruding a first expandable material onto the carrier material; and
cutting the carrier material and the first expandable material to form multiple sub-members, each of the multiple sub-members including a carrier with the first expandable material disposed thereon, wherein:
i. the first expandable material is configured to volumetrically expand to between about 140% and about 400% of its original size.
15 . A method as in claim 14 wherein the carrier of each of the multiple sub-members defines an internal open space having a volume of between about 30 mm 3 and about 5 cm 3 and each of the multiple sub-members are segments of less that about 1 decimeter.
16 . A method as in claim 15 further comprising placing the multiple sub-members within a cavity of the structure of the automotive vehicle wherein the multiple sub-members include at least 10 sub-members.
17 . A method as in claim 16 further comprising shaping the multiple sub-members to form a reinforcement member that substantially corresponds in shape to the cavity.
18 . A method as in claim 17 further comprising expanding the first expandable material to adhere the reinforcement member to the structure.
19 . A method as in claim 14 wherein the multiple sub-members are comprised of a first sub-member and a second sub-member; and
further comprising placing the first sub-member and the second sub-member in the structure with lengths of the first and second sub-members being substantially coextensive.
20 . A method as in claim 19 wherein the carrier is formed of second expandable material.
21 . A method as in claim 20 further comprising expanding the first and second expandable materials such that the first expandable material forms ribs within the structure.
22 . A method as in claim 14 wherein the carrier material is formed of a second expandable material and the second expandable material is configured to expand to between about 350% and about 1000% its original size.
23 . A method of providing sealing, baffling or reinforcement for a structure of an automotive vehicle, comprising:
providing a layer of carrier material;
providing a layer of a first expandable material onto the layer of carrier material for forming a laminate; and
shaping the laminate including the layer of carrier material and the layer of expandable material to form a member having a carrier with the expandable material disposed thereon; wherein:
ii. the first expandable material is configured to volumetrically expand to between about 140% and about 400% of its original size.
24 . A method as in claim 23 wherein the shaping step includes rolling the layer of carrier material and the layer of first expandable material together and cutting the laminate to form a reinforcement member.
25 . A method as in claim 24 wherein the rolling step is carrier out after the cutting step.
26 . A method as in claim 25 wherein the providing of the first layer of expandable material includes extruding the first layer of expandable material.
27 . A method as in claim 26 wherein the carrier of the member spirals outwardly from adjacent the center of the member.
28 . A method as in claim 23 wherein the shaping step includes thermoforming the laminate with a die to form the member.
29 . A method as in claim 28 wherein the member has a U-shaped cross-section upon formation.
30 . The member as in claim 23 , wherein the member includes one or more fasteners, which are integrally extruded as part of the carrier, the fastener is fabricated separately from the extruded carrier and connected thereto in a separate step, or a combination thereof.