Umbuthano kasilika ka-Benson wenziwe ngenhlanganisela ye-PVC yezinga eliphezulu ye-PVC yemvelo futhi enobungani bemvelo, ngokuncibilika okunezinga lokushisa eliphezulu nokukhishwa kwe-extrusion, ebunjwe yaba umucu kasilika onamathiselwe ekusekelweni kwe-PVC, ngemva kwezinqubo eziningi ezinhle.Umkhiqizo awukangezi i-wax kapharafini ene-oxidized, eyingozi empilweni, futhi inempilo futhi ayinaphunga.Izingcezu nemikhiqizo elahliwe iyinhlaka ye-thermoplastic egaywa kabusha.