REINFORCED PAPERBOARD TUBE

摘要

A reinforced paperboard tube is constructed by depositing a polymeric matrix with embedded fibers on a paperboard tube by use of pultrusion processes, resulting in a composite tube with a paperboard inner surface and a composite polymer/fiber outer surface. The resulting composite tube exhibits desired strength and dynamic properties greater than those provided by either the original paperboard tube or the added polymer/fiber shell taken alone. The composite tube is particularly useful in the manufacture of paper or other sheet or strand materials which are rolled onto tubes during manufacturing, since the composite tube allows a low-diameter tube upon which such materials can be wound at very high speeds without the dynamic instability that would otherwise result if plain paperboard or polymer tubes of the same diameter and length were used.