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AssigneeGeorg NaherGmbH
InventorsKlaus Stricker, Rolf Maysenhoelder, Dieter W. Hess
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The invention relates to a shaped laminate, particularly an internal lining part for motor vehicles. The laminate (1) has a substantially stiff supporting sheet (2) of thermoplastic material. The latter is covered on at least one and preferably both sides with a surface layer (3, 4) in the form of a nonwoven fabric. The joint between the nonwoven fabric and the plastic sheet is a thermal bond. For forming the bond the nonwoven fabric at least partly and preferably completely is made from the same type of plastic as the sheet. The invention also relates to a process and an apparatus for producing the laminate. For forming the adhesive joint the sheet is heated on at least one side to a temperature in the adhesive range of the thermoplastic material, the sheet interior being kept at a lower temperature. As a result of this procedure the nonwoven fabric structure is protected during the adhesion and shaping process. The invention makes it possible in simple manner to produce type-pure laminates, so that they can be recycled again as a whole, as can the waste material produced during their production.
A shaped laminate suitable for lining a compartment of a motor vehicle, the laminate including a support layer, comprising a substantially stiff extruded sheet of a thermoplastic material and first and second surface layers, respectively, being formed of a textile fabric, wherein fibers of at least one of said surface layers comprises the same thermoplastic material as the sheet, said sheet being joined on at least one side to an open pore layer from a very thin web material, said very thin web material having thickness from about 1 to about 5 times fiber thickness and having a low layer weight between 10 to 50 g/m.sup.2 which is shaped in conformance with said sheet, said layer being placed between said surface layer and said sheet, whereby whichever of either surface layer formed of said textile fabric are joined to said sheet by thermal bonding of said fibers to the sheet and whereby the pores of the web material are so wide and the web material layer thickness so thin that the adhesive bond between the sheet and the adjacent surface layer penetrates the pores.
Dependencies are inferred from the claim text.