 Method for making a composite headliner |
| The invention is a unitary composite headliner adapted to be installed adjacent a motor vehicle ... |
|
| Method for fabricating non-fiberglass sound absorbing moldable thermoplastic structure |
| Generally speaking, in accordance with the invention, a non-fiberglass containing sound absorbing ... |
|
| Mechanism for adjusting an extrusion die in cereal grain extruder apparatus |
| The present invention is embodied in an improved extruder apparatus for a curled food product ... |
|
| Method of making pretzels of selected spiral pitch |
| It is, therefore, an important object of the present invention to provide an extremely simple ... |
|
| Nozzle for extrusion |
| The present invention teaches an apparatus for providing a co-extruded product, and also teaches a ... |
|
| Method of manufacturing columnar shaped piece |
| A principal object of the present invention is to provide a columnar shaped piece that differs from ... |
|
| Extrusion apparatus and method for producing three-dimensional shapes |
| The present invention provides an apparatus and method for producing three-dimensional objects via ... |
|
| Extrusion of an article of varying content |
| I claim: 1. A process of extruding an extrudate with different materials, the proportions of which ... |
|
| Method for cooling and if necessary calibrating articles of plastic |
| The object underlying the present invention is to improve the strength properties of extruded ... |
|
| Extruder with a shaping device |
| The object underlying the present invention is to achieve, even at high throughputs, a perfect and ... |
|
|
Process for the manufacture of a composite molded structure, and especially of a ski
| Details |
Inventors: Perenon, Jacques; Pichon, Maurice; Deborde, Henri C.; Jodelet, Francois;
Assignee: Skis Rossignol S.A. (FR)
Primary Examiner: Ball; Michael W.
Assistant Examiner: Stemmer; Daniel J.
Attorney, Agent or Firm: Parkhurst, Wendel & Rossi
The invention relates to a process for manufacturing a composite molded structure including the steps of: depositing first and second members in a mold; inserting at least one flexible plastic membrane between the first and second members so as to form a sheath when the mold is closed; closing the mold; injecting into the sheath reactants intended to react to form a foam which expands in situ and stretches the sheath until it forces the members flat against the walls of the mold; cooling the contents of the mold; and opening the mold to withdraw the composite molded structure. |
|
DETAILED DESCRIPTION The present invention is aimed at remedying these disadvantages.
It offers a process for the manufacture of a molded structure capable of exhibiting a section capable of varying along the lengthwise axis of the structure, which is easy to implement, low in cost, and which makes it possible to have full control of the mechanical and physical properties of the structure obtained.
This process for the manufacture of a composite molded structure consisting of a plastic foam core, reinforced over its periphery by a set of two half-casings, an upper one and lower one respectively, consisting of strengthening, protective, damping, decorative or other members, includes the steps of: depositing in a mold a first subassembly intended to form the first half-casing; depositing in this same mold a second subassembly intended to form the second half-casing; closing the mold; then, injecting between these two subassemblies reactants intended to react to form a foam which expands in situ until each of the subassemblies is laid flat against the walls of the mold; then, cooling the contents of the mold; and finally, in opening the mold to withdraw the composite molded structure obtained.
The process in accordance with the invention is one in which, when the first and the second subassemblies are stacked in the mold, two flexible plastic membranes are inserted between the upper half-casing and the lower half-casing, the membranes defining, when the mold is closed, a sheath into which the reactants of the foam are injected.
This operation, in fact, constitutes the only operation of the molding of the molded structure.
In other words, the present invention consists in that, by starting with standard members and employing membranes of a suitable material, it is possible to produce molded composite structures whose section can vary along the lengthwise axis of the said structures, this being done by exploiting the elasticity, the flexibility and the geometry of certain components and the foam expansion
|
| Related patents |
|
|
Method of making a headliner and the like
We claim: 1. A process for making a flexible laminated sheet of foamed resin and fiber glass comprising, (a) providing layers of open celled polyurethane foam and non-...
|
|
|
Method for forming plastic molded panels with inserts
FIG. 1 schematically illustrates an example of an interior door panel 10 for an automobile. The panel 10 is illustrated as being formed with curved opposite ends. It is ...
|
|
|
Self-supporting impact resistant laminate
The preferred embodiments of the laminate of this invention will now be described in relation to an improved vehicle headliner. It will be understood, however, that the ...
|
|
|
Laminated headliner
We claim: 1. A headliner formed from laminated layers of foamed resin, fiber glass, non-woven scrim and a decorative layer wherein, the foamed resin layer has a ...
|
|
|
Twin-sheet thermoforming process with shell reinforcement
We claim: 1. A process for producing a reinforced twin-sheet thermoformed thermoplastic article having a reinforced portion, the process comprising the steps of: (a) ...
|
|
|
Headliner assembly and locating method
It is an object of the present invention to provide an automotive body and headliner assembly and a method which locates the headliner in the body. According to the ...
|
|
|
Selectively reinforced thermoformed article and process
We claim: 1. A reinforced twin-sheet thermoformed thermoplastic article comprising: (a) a first thermoformed thermoplastic sheet; (b) a second thermoplastic sheet; and (...
|
|
|
Polyolefin compositions with balanced shrink properties
OF THE INVENTION Double bubble and trapped bubble biaxial orientation methods can be simulated on a laboratory scale using a T. M. Long stretcher which is analogous to ...
|
|
|
Thermoplastic three-dimensional fiber network
Three dimensional fiber network structures can be made that are semi-rigid and dimensionally stable, but have sufficient flexibility to be useful as cushioning materials....
|
|
|
Side restraint assembly
The present invention provides alternatives and advantages over the prior art by providing a restraint assembly which provides initial inflated coverage and extended ...
|
|
|
Nonmetallic Processes 
