Release sheet
AssigneeOji Paper Co., Ltd.
InventorsYukio Hosoda, Hiro Ohtsubo, Hiroyuki Yamada
Life of this patent
Estimating the term…
Abstract
A one-faced or double-faced release sheet presenting an adequate barrier against coating solutions of release agent, good adhesion to release agents, high heat resistance and minimum heat shrinkage comprising a support sheet having a release layer formed on at least one side thereof with an undercoated layer being disposed between said support sheet and the release layer, said undercoated layer being formed from a mixture of a soap-free type acrylic resin emulsion and oxidized starch.
Claims17
A release sheet comprising a support sheet having a release layer formed on at least one side thereof with an undercoated layer being disposed between said support sheet and the release layer, said undercoated layer being formed from a mixture of a soap-free type acrylic resin emulsion and oxidized starch.
A double-faced release sheet having a coating of release agent formed on both surfaces of a support made of a lamination of a base sheet and a metal foil, said release sheet having an undercoated layer between each surface of the support and the release agent coating, the undercoated layer on the base sheet side being a layer principally made of a soap-free type acrylic resin emulsion whereas the undercoated layer on the metal foil side is a layer principally made of a cross-linking product of thermosetting resins.
Dependencies are inferred from the claim text.