초록 ▼

A structural panel has one or more face sheets bonded by adhesive layers to a core body having two outer plastic liner sheets fusion-bonded to linear ends of inner plastic truss elements spaced apart with open spaces therebetween extending in a plane direction of the plastic liner sheets. The sheet-

A structural panel has one or more face sheets bonded by adhesive layers to a core body having two outer plastic liner sheets fusion-bonded to linear ends of inner plastic truss elements spaced apart with open spaces therebetween extending in a plane direction of the plastic liner sheets. The sheet-to-sheet adhesive bonding provides a high-strength laminate bonding that is very resistant to delamination, simple and inexpensive, and can be carried out by a preferred continuous sheet bonding technique. The all-plastic core body is highly resistant to moisture attack, and the open spaces between truss elements provide flexibility to accommodate thermal expansion and contraction. The truss construction of the core body provides high compressive and shear strength, while minimizing the amount of material required to be used. In one preferred embodiment, two metal face sheets are used, and the core body has plastic liner sheets fusion-bonded to a corrugated plastic core sheet. The corrugated plastic core sheet can be formed by a continuous plastic extrusion technique. Diagonal plastic webs or perpendicular plastic I-beams may also be used for the truss elements. Another preferred embodiment has two metal face sheets bonded to two plastic core bodies which in turn are bonded to a center foam core layer. A further embodiment has only one metal face sheet bonded to one side of the plastic core body, allowing it to be used as veneer or curved around rounded structures.

대표청구항 ▼

[ I claim:] [1.] A structural panel comprising:at least one metal face sheet made of a durable metallic material having a high tensile strength, anda core body having two outer plastic liner sheets fusion-bonded to linear ends of inner plastic truss elements spaced apart with open spaces there betwe

[ I claim:] [1.] A structural panel comprising:at least one metal face sheet made of a durable metallic material having a high tensile strength, anda core body having two outer plastic liner sheets fusion-bonded to linear ends of inner plastic truss elements spaced apart with open spaces there between extending in a plane direction of the plastic liner sheets,wherein one of the outer plastic liner sheets of the core body is bonded with an adhesive layer to an inner surface of the at least one face sheet in which the inner surface of the metal face sheet and the surface of the outer plastic liner sheet are treated with an electron plasma surface treatment to remove foreign substances therefrom and the treated surface of the metal face sheet and of the outer plastic liner sheet are bonded together with an adhesive layer said bonding with the adhesive layer providing a high strength bonding characteristic to the structural panel with low risk of delamination in use.