Composite material human body support and process for making same
A human body support comprises a composite material base frame ( 2 ) having a top surface ( 11 ) and a bottom surface ( 10 ) and a cover element ′( 3 ) formed from a first polymer material ( 3 ) associated to the base frame ( 2 ). The support further comprises at least one film of a second thermoplastic polymer material ( 8 ) which is fixedly attached to the base frame ( 2 ). The second thermoplastic material ( 8 ) has an affinity with the first polymer material ( 3 ) so that the cover element may be fixedly attached to the base frame, thereby forming an integral support. A polymethane gel ( 4 ) may be disposed in a recess of the base frame ( 2 ). The first polymer material ( 3 ) has a thickness of 0.1 to 0.3 mm, and the second material ( 8 ) has a thickness of 0.01 to 0.025 mm, both may be optically transparent.
1. A bicycle saddle comprising:
a base frame of the saddle having a top surface and a bottom surface;
an outermost layer of the saddle formed from a first thermoplastic polymer material and associated to said base frame, said outermost layer being a cover element of the saddle;
at least one film of a second thermoplastic polymer material having a top face and a bottom face and stably coupling said base frame to said cover element,
wherein said cover element is formed from at least one layer of said first thermoplastic polymer material, said base frame being made of a composite material comprising one or more skins of a fibrous material embedded in a polymer matrix including a thermosetting resin, said at least one film having its top face adhered to said cover element and its bottom face adhered to said base frame in correspondence of at least one of said top or bottom surfaces, said at least one film having the thickness less than half the thickness of said at least one layer of said first polymer thermoplastic material, said second thermoplastic material having one or more of a physical or chemical affinity with said first polymer thermoplastic material to provide a junction therebetween, wherein said cover element and said base frame are molded to one another; and
a pad element made of a viscoelastic material located between said base frame and said cover element,
wherein said pad element is disposed within a recessed portion of said base frame extending for less than the entirety of said base frame, said pad element being coupled to said base frame by said at least one film, and
wherein at least some of said at least one film of a second thermoplastic polymer material is penetrates the thermosetting resin of the base frame.
2. The bicycle saddle as claimed in claim 1 , wherein said second thermoplastic polymer material and said first thermoplastic polymer material are identical.
3. The bicycle saddle as claimed in claim 1 , wherein said first thermoplastic polymer material and said second thermoplastic polymer material are selected from the group comprising polyurethanes, polyamides and polyesters.
4. The bicycle saddle as claimed in claim 1 , wherein said first thermoplastic polymer material and said second thermoplastic polymer material are optically transparent.
5. The bicycle saddle as claimed in claim 1 , wherein the thickness of said at least one film of a second thermoplastic polymer material is of 0.01 mm to 0.05 mm.
6. The bicycle saddle as claimed in claim 1 , wherein said at least one layer of the first thermoplastic polymer material has a thickness of 0.1 mm to 0.3 mm.
7. The bicycle saddle as claimed in claim 1 , wherein said base frame has a recessed seat for having said pad element.
8. The bicycle saddle as claimed in claim 7 , wherein said viscoelastic material has an affinity with at least one of said first thermoplastic polymer material or second thermoplastic polymer material.
9. The bicycle saddle as claimed in claim 1 , wherein said viscoelastic material is selected from the group of polyurethane gels.