Impact-protective coating for plastic pipe

Details Impact-protective coating for plastic pipe Impact-protective coating for plastic pipe

1974-09-16

1976-04-06

Queisser, Richard C.

Pipes and tubular conduits

Distinct layers

Bonded to each other

138110, 427204, 428 36, F16L 914

Patent

active

039482944

ABSTRACT:
An energy-absorbing protective coating is bonded to the exterior of a plastic pipe. Preferably, the coating is a layer of low-cost, crushable, multicellular, inorganic particles, such as natural volcanic lightweight aggregate, expanded shale, expanded clay, pumice, slag, or furnace cinder, embedded in a thin film of plastic resin. The particles crush by breaking upon impact, which absorbs the energy of the impact and protects the pipe from damage.

REFERENCES:
patent: 2787557 (1957-04-01), Christensen et al.
patent: 2925831 (1960-02-01), Welty et al.
patent: 3304219 (1967-02-01), Nickerson
patent: 3396641 (1968-08-01), Welty et al.
patent: 3483896 (1969-12-01), Grosh
patent: 3607511 (1971-09-01), Grosh
patent: 3619230 (1971-11-01), Matthews

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