The substrate film may be composed of a material selected from the group consisting of paper, paperboard, a foamed core, polyethylene terephthlate, polyamide, polyethylene and polypropylene.

plywood with foamed plastic core

The apparatus also includes a foam core.

Each panel (20) has a solid central core (21) of syntactic foam.

Additionally, the extruded foam core can vary in density to provide a composite foam core.

Where an expanded polypropylene foam core is provided, the foam core is attached to the outer and inner skin through the use of a polypropylene adhesive (28 and 34).

The element includes a polymer foam core and at least one fibrous layer adhered to the polymer foam core by epoxy.

A foam core for a composite structure is described.

The core includes a first core layer (62) and a second core layer (64).

The invention relates to a method for shaping or forming metal foam sandwich structures comprising at least one core layer consisting of a metal foam (1) and at least one covering layer (2) which is metallically connected to the core layer.

A building panel (100) includes a foam core and a composite structural skin (110, 720) adhered to a surface of the foam core (105, 730).

A foam injection system is provided for injecting foam into the foam injection zone (37) to form a foam core preform or a plurality of foam core preforms.

A structural insulated roof panel with a rigid foam core is disclosed.

The wall also comprises composite panels consisting of a foam core and two outer skins.

Each section includes a foam plastic core between two opposed first and second sheet members.