B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 3/20 (2006.01) F16L 9/128 (2006.01)
Patent
CA 2642876
Polymeric pipes with barrier layers are made by attaching to a pipe a multilayer structure which comprises a barrier layer and at least one irregularly surfaced sheet. The resulting pipes, which have reduced permeation to various substances, are useful for reducing loss of materials which are valuable, toxic and/or environmentally harmful.
Des tuyaux polymères munis de couches barrières sont fabriqués par arrimage à un tuyau d'une structure multicouche qui comprend une couche barrière et au moins une feuille à surface irrégulière. Les tuyaux obtenus, qui présentent une perméabilité réduite vis-à-vis de substances diverses, peuvent être employés dans la réduction de la perte de matières précieuses, toxiques et/ou dangereuses pour l'environnement.
Doshi Shailesh
Fish Robert B.
Mestemacher Steven A.
Seabrook Paul D.
E.i. Du Pont de Nemours And Company
Torys Llp
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