COLOURED MOULDING FOR ATTACHMENT TO A VEHICLE

Abstract: A molding (10) for attachment to a vehicle includes a support member (16) and a first colored layer (18) secured to the support member (16). A second colored layer (20) is abutted to the first colored layer (18) at one edge thereof (B), and secured to the support member (16). The first and second colored layers (18, 20) are of similar colors presenting a color matched molding.

Description: The present invention relates to a moulding for attachment to a vehicle. More particularly, the present invention relates to a moulding and weatherstrip which can be colour matched to the surface of a vehicle. Mouldings or weather strips are well known for use with automotive vehicles and are typically made of synthetic elastomeric materials because of the desirable physical properties of such materials. Such mouldings are generally black in colour, however, because of difficulties encountered when elastomeric material is coloured or painted. Coloured weatherstrips are, however, known. For example, U.S. Patent US-A-4,513,044, issued April 23, 1985, to Shigeki et al. discloses a trim portion having an outer surface covered by a coloured solid rubber layer having a colour. All parts of the weather strip are taught to be formed from the same kind of rubber, such as ethylene-propylene-diene monomer or nitrite based rubber (EPDM or NBR). Coloured elastomeric material generally does not present a high-gloss appearance. The colour does not hold and the elastomeric material has a dull appearance. Thus, heretofore it has not been possible to match the typical high gloss surface colour of vehicles with coloured elastomeric materials. According to the invention there is provided a moulding (10) for attachment to a vehicle (14) having a coloured surface, wherein the moulding (10) comprises: a support member (16) capable of being attached to the bottom of a window (12) opening in the door of a vehicle (14); a first layer (18) which is capable of being provided with a colour substantially similar to that of the coloured surface of the vehicle (14) to which the support member (16) is intended for attachment and which is secured to a first part of the support member (16) so that when the support member (16) is attached to a vehicle (14) the first layer (18) faces the exterior of the vehicle (14); and a second layer (20) which is of a material capable of effecting a seal and which is secured to a second part of the support member (16) so that when the support member (16) is attached to a vehicle (14) the second layer (20) faces the interior of the vehicle (14) and is able to act as a seal for the window opening. The support member is preferably provided with a first and a second limb joined by an intermediate portion, the first limb in use being situated in the exterior of the vehicle (14), the second limb in use being situated on the interior of the vehicle (14); the first layer (18) being secured to the first limb and the intermediate portion, and the second layer (20) being secured, adjacent to the first layer (18), to the second limb. According to the invention there is also provided a method of manufacturing a moulding (10) according to the invention, which method comprises the steps of: forming the support member (16) to a predetermined configuration by rolling; applying a first and second adhesive selectively along the support member (16); heating the support member (16) and adhesives to a predetermined temperature; securing the first layer (18) to the support member (16) by the first adhesive; and securing the second layer (20) to the support member (16) by the second adhesive. The first and second layers can be of similar colours presenting an integral colour matched moulding. The first colored layer preferably is of a colour which colour matches the exterior colour of the vehicle to which it is to be attached. The subject invention provides a coloured molding which matches the surface colour of the vehicle and can present a high-gloss finish. Other advantages of the present invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings. Figure 1 is an elevational view of a preferred embodiment of the moulding of the subject invention attached to a vehicle shown broken away. Figure 2 is a sectional view taken along line 2-2 of Figure 1. A preferred embodiment of a weather strip or moulding for attachment to a vehicle is generally shown at 10 in Figures 1 and 2. The moulding 10 is typically a belt weather strip at the bottom of the window 12 of the vehicle 14. The moulding 10 includes a metal support member 16 which is generally U-shaped in cross-sectional configuration with one leg longer than the other. A first coloured layer 18 is secured to one side of the support member 16. The first coloured layer 18 is made of a polyvinyl chloride (PVC) material having a shore "A" durometer of 86 ±5. A first adhesive, such as "A1104B", commercially available from B.F. Goodrich, is used to secure the first coloured layer 18 to the support member 16. The first adhesive is applied from point A to B on the support member 16. The moulding 10 includes a second layer 20 which abuts against one end of the first coloured layer 18 at B and which is secured to the same side surface of the suport member 16 as the first coloured layer 18. The second layer 20 is made of a thermoplastic elastomer material, i.e., a thermoplastic elastomer (TPE) such as "Santoprene #101-64", commercially available from the Monsanto Chemical Company. A second adhesive, such as "Mord-Ad P80", commercially available from Morton Thiokol, Inc., is applied from point B to C on the support member 16 and secures the second layer 20 to the support member 16. TPE comprises rubber and plastic and has the characteristics of a thermoplastic material while also having compression set properties comparable to rubber. Thus TPE is an effective sealant. Preferably the TPE is ultraviolet (UV) light stabilized. Also preferably the first and second layers 18 and 20 have a colour similar to each other. PVC can be made to colour match the vehicle body paint, including metallics and high-gloss body paint. Layer 18 which is presented to the outside of the vehicle can thus colour match the vehicle body paint. PVC is not a good material for seals because it has poor compression set properties but layer 18 does not have a sealing function. TPE is presently limited in availability to black and lower gloss non-metallic colours. However, layer 20 is presented largely interior of the door. Still, the sealing lip 24 of second layer 20 can be made of a colour compatible to the colour of the layer 18. The moulding 10 further includes a flock material or low friction coating 22 secured in a conventional manner to a portion of one side of the second layer 20. A method for making the coloured molding 10 for attahcment to a vehicle 14 comprises the steps of forming the support member 16 to a predetermined configuration, such as a U-shape, by roll-forming. The steps include securing the first coloured layer 18 to the support member 16 and securing the second layer 20 to the support member 16. The steps also include matching the first 18 and second 20 layers so that they have similar colours. The method further includes extruding the first coloured layer 18 of a polymeric material such as PVC and extruding the second layer 20 of an elastomeric and polymeric material such as Santoprene. The steps further include applying a first and second adhesive selectively along the support member 16 to secure the first 18 and second 20 layers to the support member 16, respectively. The method also includes heating the support member 16 and adhesives to a predetermined temperature and bonding the first 18 and second 20 layers to the support member 16 by curing the adhesive. The steps may further include applying a slip coat on a portion of the second layer 20 by, for example, priming one side of the second layer 20 and applying a third adhesive over the primer and securing a flock material 22 with the third adhesive to the second layer 20. The method also includes extruding the first colour layer of a high gloss PVC and/or PVC of metallic colours to provide a match to the appearance of the vehicle body and trim. The invention has been described in an illustrative manner, and it is to be understood that the terminology which has been used in intended to be in the nature of words of description rather that of limitation. Obviously, many modifications and variations of the present invention are possible in light of the above teachings as defined in the claims. It is, therefore, to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.

Claims: A moulding for attachment to a vehicle having a coloured surface, wherein the moulding comprises: a support member capable of being attached to the bottom of a window opening in the door of a vehicle; a first layer which is capable of being provided with a colour substantially similar to that of the coloured surface of the vehicle to which the support member is intended for attachment and which is secured to a first part of the support member so that when the support member is attached to a vehicle the first layer faces the exterior of the vehicle; and a second layer which is of a material capable of effecting a seal and which is secured to a second part of the support member so that when the support member is attached to a vehicle the second layer faces the interior of the vehicle and is able to act as a seal for the window opening. A moulding according to claim 1, wherein the second layer is of a thermoplastic elastomeric material. A moulding according to claims 1 or 2, wherein the first layer is of a polymeric material capable of being provided with a high gloss appearance corresponding substantially with the appearance of the coloured surface of the vehicle to which it is intended for attachment. A moulding according to claim 3, wherein the first layer is of a polyvinylchloride. A moulding according to any preceding claim, wherein the second layer is provided with a colour substantially similar to that of the first layer. A moulding according to any preceding claim, wherein the first and second layers are secured to the support member by an adhesive. A moulding according to any preceding claim, which further includes a low friction material, such as flock, provided on at least a part of the second layer. A moulding according to any preceding claim, wherein the support member is of a metal material. A moulding according to any preceding claim, wherein the support member is of a substantially U-shaped configuration. A moulding according to any preceding claim, which is adapted for attachment to a window frame of a vehicle, and wherein the support member is provided with a first and a second limb joined by an intermediate portion, the first limb in use being situated in the exterior of the vehicle, the second limb in use being situated on the interior of the vehicle; the first layer being secured to the first limb and the intermediate portion, and the second layer being secured, adjacent to the first layer, to the second limb. A moulding according to claim 10, wherein the second layer is provided with a protruding member capable of effecting a seal between the exterior of the vehicle and glass situated in the window frame. A method of manufacturing a moulding according to any one of claims 1 to 11, which method comprises the steps of: forming the support member to a predetermined configuration by rolling; applying a first and second adhesive selectively along the support member; heating the support member and adhesives to a predetermined temperature; securing the first layer to the support member by the first adhesive; and securing the second layer to the support member by the second adhesive. A method according to claim 12, which further includes the steps of: priming one side of the second layer; applying a third adhesive over the primer; and securing a flock material to one side of the second layer by the third adhesive.

Inventors: JACKSON, NORMAN CHARLES
Applicants: THE STANDARD PRODUCTS COMPANY
Application year: 1989
Main classification: B60J10
IPC codes: B60J10, B60R13