Patent ID: 6149982
Filing Date: 2000-11-21
Classification: B05D,C23C

Abstract:
In a method of forming a polymer coating on an inner surface of a heat-sensitive, or heat-sensitive, oriented polymer container, comprising,locating said heat-sensitive or heat-sensitive, oriented polymer container in an enclosure;controlling the environment within the enclosure an the inside of the container;feeding reactant gas into the container, said reactant gas fed into the container when reacted, and when said polymer coating is chemically bonded on said container, providing barrier properties including resistance to absorption of liquids or gases beyond the surface of said coating; andgenerating a plasma from the reactant gas fed into the container;the improvement comprising:controlling the environment by controlling a first pressure inside the enclosure, and independently controlling a second pressure inside of the container, the second pressure being controlled to avoid pressures which permit the formation of plasma in the enclosure outside of the container;wherein polymer orientation and flexibility of said container is maintained by said method of forming said polymer coating on said surface of said container.