Thanks for asking.
I got those scraps from
Mulicraft Plastics. The materials is used for signage. So sign shops might be a good source.
I've seen generally three price levels (retail wholesale and distributors?}. Competitive brands are
PolyMetal:
Quote:
https://www.nudo.com › products › sign-panels › polymetal
PolyMetal Sign Panels | NUDO Products
Product Description. PolyMetal sign panels are comprised of a recycled thermoplastic core sandwiched between two sheets of finished aluminum on one or two sides. The recycled thermoplastic core lends itself to resisting moisture. PolyMetal panels also feature the ability to digitally print direct to the panel,
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Alumapanel:
Quote:
https://economysignsupply.com › product › alumapanel
Alumapanel - Economy Sign Supply
Alumapanel are flat panels consisting of two thin aluminum sheets bonded to a PVC core. These sheets are frequently used for external cladding or facades of buildings, insulation, and signage. Additional information. Thickness: 3mm, 6mm. Size: 4' x 8', 4' x 10', 5' x 10' Color:
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Grimco MaxMetal.
Quote:
https://www.grimco.com › Catalog › Products › MAXmetal
Grimco | MAXMETAL™
MAXMETAL is the standard in ACM, or aluminum composite material. Comprised of two, pre-painted .15mm aluminum panels bonded to a solid polyethylene core, it is lighter and more durable than MDO and solid aluminum panels. The low mineral core makes MAXMETAL™ easy to fabricate, and its low
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I just found another that claims fire resistance.
Quote:
https://www.alucobond.com › products › alucobond-plus
ALUCOBOND® PLUS - 3A Composites GmbH Website (EN)
ALUCOBOND® PLUS is a panel with two aluminium cover sheets and a mineral-filled polymer core that meets more stringent fire safety requirements. It offers flatness, formability, weather resistance and ease of processing, as well as various colours and finishes.
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Your cautionary tail is the
Quote:
en.wikipedia.org/wiki/Grenfell_Tower_fire
The fire was started by an electrical fault in a refrigerator on the fourth floor.[note 1] This spread rapidly up the building's exterior, bringing flames and smoke to all residential floors, accelerated by dangerously combustible aluminium composite cladding and external insulation, with an air gap between them enabling the stack effect.
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