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Richmond extrudes
and converts three densities of virgin polyethylene. Though available
in commercial grades, these products are designed for critical
ultra-clean packaging applications. Made from barefoot resins,
these polyethylene films do not contain any additives such as
slip agents, antiblock, or antistats. The materials and processes
have been designed to eliminate or reduce concerns of ionic contamination,
outgassing, non-volatile residues, and particulate matter.
High density
polyethylene (HDPE) is used by customers that need an extremely
tough bag to withstand shipping and handling that retains the
cleanliness and good contact clarity of virgin polyethylene.
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Features
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Available
as bags, tubing and sheeting |
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Typically
available from 2 to 6 mil |
Benefits
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Seals easily |
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Very low
ionic contamination |
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LOW
DENSITY POLYETHYLENE
Packaging made
from low density polyethylene (LDPE) is typically used
as the intimate contact layer to silicon “chunk” and wafers because
of its superior cleanliness. Richmond customers select LDPE because
it is a cost effective material that offers low ionic contamination
and outgassing. LDPE is available up to a thickness
of 13 mil.
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Features
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Available
as bags, tubing and sheeting |
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Typically
available from 2 to 6 mil |
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Ideal for
ultra-clean applications |
Benefits
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Seals easily |
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Safeguards
critical products |
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Very low
outgassing, ionic contamination |
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MEDIUM
DENSITY POLYETHYLENE
Packaging made
from medium density polyethylene (MDPE) is typically used
as the intimate contact layer to cassettes containing disc media
or bare wafers because of its superior cleanliness. Some Richmond
customers choose MDPE because it is suited for use in applications
where submicron contaminants are a critical concern.
Overwraps made
from materials such as Richmond’s PFL-540 or CAV-45
are excellent choices for the outer moisture barrier bag.
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