 Force-resistant portable building |
| What is claimed is: 1. A portable building comprising a plurality of interconnected walls defining ... |
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| Fire-resistant door |
| A fire-resistant, aluminum, cementitious-material-free, insulation-free door adapted to prevent the ... |
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| Releasable clamping-type compressive joint |
| With respect to the device the object of the invention is achieved by way of the invention in that ... |
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| Threaded rod and strut connector and method |
| A rod connector is employed for channel shape strut of the type having legs with inturned edges. T... |
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| Method and device for the aligning of an element, e.g. frame, to be inserted into a wall opening |
| I claim: 1. A method for aligning elements such as frames, door frames, window frames or the like ... |
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| Extruded plastic panel holding and jointing strips and window assemblies therewith |
| In my invention, I have provided practical and improved extruded plastic panel framing, holding and ... |
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| Drywall corner-finishing accessory |
| This invention provides a drywall corner-finishing accessory comprising three integrally joined, ... |
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| Glass restraint system for windows |
| OF THE PREFERRED EMBODIMENT Referring now to FIG. 1 of the drawing, there is shown a preferred ... |
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| Soft edge moulding |
| It is an object of the present invention to provide an edge protector for protecting persons from ... |
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Moldable foam composite
| Details |
Inventors: Zaima, Harold H.; Landry, J. Christopher;
Assignee: Eften, Inc. (Farmington Hills, MI)
Primary Examiner: Van Balen; William J.
Assistant Examiner:
Attorney, Agent or Firm: Notaro & Michalos
A heat moldable composite panel is particularly useful as an automotive headliner and other as structural parts which must have heat and sound insulating properties as well as sound absorbing properties. The panel comprises a corrugated core which is advantageously dual arched core or corrugated metal foil, with opposite sides. One side is covered by a linerboard and is attached to the core through thermoplastic adhesive. The opposite side is covered by a thermoformable foam layer which is attached to the core by heat activatable adhesive. The entire structure is formable in a molding die at relatively low temperatures. |
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DETAILED DESCRIPTION The present invention comprises a moldable composite panel and method of manufacturing the panel.
The panel comprises a corrugated core having opposite first and second sides.
A linerboard is adhered to the first side of the core by a heat activated adhesive, in particular, thermoplastic, and a foam layer is adhered to the second side of the core, also by a heat activated adhesive.
The panel of the invention may thus be formed into any desired shape at relatively low temperatures (120.
degree.
-140.
degree.
C.
).
Low temperature molding allows the panel to be constructed in a single step.
Other heat sensitive laminates may also be connected to the panel during the same single molding step, such as a covering material.
By using a single faced corrugated product and a foam composite, the panel is flexible yet has structural integrity and is self-supporting.
It can also achieve deep draws.
In extreme cases, the single face linerboard may actually tear, with the foam covering the gap thus formed and providing a uniform cosmetic covering with good appearance.
The flexible characteristics of the foam also permit any structure, such as an automotive headliner constructed with the panel, to be folded.
Any crease which is created within the single facer corrugated part of the panel, is again covered by the flexible foam.
The use of foam adds noise absorption characteristics to the panel which are not available in prior panels utilizing a double facer corrugated core product.
It is important to distinguish between noise absorbing properties and noise insulating properties.
Noise absorbing properties are those which permit sound in an enclosure, for example, noise within the cabin of an automobile, to be absorbed rather than reflected.
This reduces the level of sound within the enclosure.
The noise may have entered the enclosure from outside or originated in the enclosure.
A noise insulating effect blocks sound from outside before it penetrates into the enclosure.
A noise insulating material does not necessarily absorb noise and does not necessarily reduce the amount of noise within an enclosure, once the noise has entered the enclosure
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Vibration and Earthquake Isolation 
