Method and apparatus for modifying surface of container made of polymeric compound
AssigneeShibuya Kogyo Co., Ltd.
InventorsNoriaki Ikenaga, Noriyuki Sakudo
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Abstract
In the state where a PET container is received in a reception chamber and made airtight by a cover, a solenoid coil is excited. Next, plasma is generated in the reception chamber. Next, DC high voltage pulses are applied from a high voltage power source to an electrode. Thus, ions are implanted into the interior side surface of the PET container so that the surface itself is modified into DLC (diamond-like carbon).
Claims13
A method for modifying a surface of a container made of a polymeric compound containing carbon, comprising steps of:
- implanting ions into said container so as to modify a surface layer of said container into a material that is not permeable by carbon dioxide gas and oxygen or a material that is hard to be permeated by carbon dioxide gas and oxygen.
An apparatus for modifying a surface of a container made of a polymeric compound comprising:
- a reception chamber adapted for receiving said container while keeping airtightness;
- a vacuum pump for evacuating said reception chamber;
- a plasma generating unit for generating plasma in said reception chamber;
- an electrode adapted for being inserted into said container received in said reception chamber;
- and
- a high voltage power source for applying high voltage pulses to said electrode;
- wherein an interior side surface layer of said container received in said reception chamber is modified into a material that is not permeable by carbon dioxide gas and oxygen or a material that is hard to be permeated by carbon dioxide gas and oxygen.
Dependencies are inferred from the claim text.