The present invention relates to collapsible tubes for containing and dispensing pastes, creams, gels and the like and, more particularly, to resilient collapsible tubes which have a tendency to unroll after being rolled in connection with the dispensing of their contents.
Tubes for containing and dispensing viscous materials, such as toothpaste, have a central dispensing spout and surrounding collar at one end of a resilient body. The other end of the tube body is closed and flat, defining a line. The contents of such tubes are commonly dispensed by squeezing the sides of the tube when a cap is removed from the spout. In order to prevent the contents of the tube from moving into previously emptied portions of the tube rather than toward the spout when the sides are squeezed, the closed end is rolled progressively toward the spout as the contents are dispensed. A problem with resilient collapsible tubes is that the closed end does not stay rolled, but instead unrolls due to the resiliency of the tube.