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A porous product, typically a metal foam sheet, is produced as a tailored, engineered product. The porous product can have enhanced strength, as well as more desirable electrical and mechanical properties. The product which first exists typically as a flexible, generally polymeric foam sheet in stri

A porous product, typically a metal foam sheet, is produced as a tailored, engineered product. The porous product can have enhanced strength, as well as more desirable electrical and mechanical properties. The product which first exists typically as a flexible, generally polymeric foam sheet in strip form, which strip is produced in the longitudinal direction, is stretched in a direction other than its direction of production. The porous product can have pores which would be anisotropic in form in usual production, which are stretched to at least substantially isotropic form. The product can even be tailored to have pores which are anisotropic in the direction of the stretch. Thus, an engineered product can be produced which, for example, as an open-cell metal foam prepared from a polymeric foam can have conductivity, both thermal and electrical, as well as strength and ductility, tailored for greater uniformity and performance.

대표청구항 ▼

[ We claim:] [1.] The method of producing a strip of an open-cell, three dimensional reticulated sheet of electroconductive foam having a multitude of pores of rearranged shape, which pores maintain said rearranged shape, the foam strip having a length in the longitudinal direction and a width in th

[ We claim:] [1.] The method of producing a strip of an open-cell, three dimensional reticulated sheet of electroconductive foam having a multitude of pores of rearranged shape, which pores maintain said rearranged shape, the foam strip having a length in the longitudinal direction and a width in the transverse direction, with the length being greater than the width, which method comprises:(a) establishing said foam strip in production in the longitudinal direction with pores having elongated diameter in the longitudinal direction;(b) coating said foam strip with electroconductive coating;(c) stretching said coated foam strip in the transverse direction, thereby elongating pore diameters in the transverse direction and providing a transverse stretch to said coated foam strip; and(d) heating the coated foam strip while maintaining said transverse stretch, to dry said coating and set said foam strip in a transverse stretched position.