Lamba conveyor fehin-kibo ao amin'ny tena fampiasa matetika toy ny polyester sentetika sy nylon sokajy roa. Anisan'izany, polyester sy nylon dia mizara ho karazana.

Polyester: Product anarana polyester, polyethylene terephthalate Siantifika anarana efa diester, nohafohezina ho PET. Polyester manana ny tombony ny hafanana tsara fanoherana, kely deformation, tsy mora ny mandray ny hamandoana, avo hery. Izay ny polyester kofehy araka ny fampisehoana am-boalohany, nizara ho avo hery (izany hoe, tsotra karazana), ambony ambany modulus shrinkage, shrinkage ambany karazana, shrinkage ambany karazana.

Nylon: varotra anarana nylon sy nylon 6 sy nylon 66 sy nylon nizara ho roa karazany. Nylon 6 dia polycaprolactam anarana siantifika, nohafohezina ho PA6, PA66 mpahay siansa atao hoe polycaprolactam adipamide, nohafohezina PA66. General tombontsoa ny nylon dia avo hery, reraka fanoherana ny kely, ambany hakitroky. Fa ny hantsana lalina manjaka no avo indray hamandoana, mora ny tontolo iainana fiantraikany.