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Product Blood. Collection. Tube. USA. B.

PATENT ASSIGNEE'S COUNTRY USA
UPDATE 07.99
PATENT ASSIGNEE This data is not available for free
PATENT CLAIMS Method of depositing a multilayer barrier coating on plastic substrate in a previously evacuated chamber comprising
- Selecting a curable comp. comprising: i) Polyfunctional
acrylates
- Flash vaporizing said comp. into said chamber
- Condensing a first layer of a film of vaporized comp. onto
outer surface of container
- Curing said film
- Vaporizing an organotin comp. & admixing the volatilized
organotin comp. with an oxidizer comp. & opt. inert gas
comp. to form a gas stream exterior to the chamber
- Establishing a glow discharge plasma in the chamber from
one or more of the gas stream comp.
- Controllably flowing the gas stream into the plasma while
confining at least a portion of the plasma therein
- Depositing a layer of tin oxide adjacent said first layer
- Vaporizing an organosilicon comp. & admixing the volatili
zed organosilicon comp. with an oxidizer comp. to form a
gas stream exterior to the chamber
- Establishing a glow discharge plasma in the chamber from
from gas stream comp
- Controllably flowing gas stream into the plasma while confi
ning at least portion of plasma therein
- Depositing a third layer of Si oxide adjacent second layer
- Dip coating a fourth layer of PVDC onto third layer
PATENT PHOTOCOPY Available on request

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