What's the difference in your Plastic material?
Backing Boards- What are they good for?
This is a question people often ask concerning the
poly sleeves they use for their comics, photos, vinyl records, posters, magazines and more. We stock
three types of poly materials that are considered
acid-free and safe for long term storage:
Polyethylene, Polypropylene and
Polyester.
All of these materials are inert which means that there is nothing in
them that can transfer to the stored item and cause damage to it. All of
our poly materials have been tested by an independent lab and have
passed the photo activity test which means that the material is safe for
storing printed images.
The following is a synopsis that should help you to decide which material is right for you.
POLYETHYLENE: Is a bi-product of natural gas. It is a
soft, clear material that has some stretch to it. It is not as clear as
the other two materials listed, but does have excellent contact clarity.
It comes in four different thickness. The thinner the sleeve, the
higher the clarity. 3 mil is by far the most popular and generally gives
the protection and clarity that is considered the standard of the
industry. Our polyethylene is 100% pure virgin polyethylene.
POLYPROPYLENE: Is a very clear, high sheen, crisp
material. We use bi-oriented polypropylene which mean that when the
material is made, it is stretched in both directions so that over time
it will not pucker (decreasing the clarity) as some polypropylenes do.
POLYESTER: Is considered the ultimate material for
archival storage. It is crystal clear, semi-rigid and in acclerated
tests shows no break down of the material for over one thousand years.
Storing collectibles in polyester is the equivalent of using the Library
of Congress archival preservation standards.
Backing boards are generally used as a stiffener for a
displayed or stored collectibles such as prints, posters, comics,
magazines, maps and other similiar items. They also keep the corners and
edges from crimping and tearing. The quality of the backing is an
important consideration that people often overlook. We stock boards that
can be used for short-term, intermediate or long-term storage.
Short-term boards should only be used for quick-sell items or items of
low or little value. Anything that is being put away for long-term
storage, should use (minimally) an acid-free backing (intermediate)-
preferably a buffered, acid-free backing (long-term). When a board is
buffered, it keeps out acid for hundreds of years. The only way to tell
for sure what kind of backing board is behind your collectible is to ask
your dealer for the specifications- you can not tell by looking at it.
People often confuse pure white boards as being "safe", but that is far
from true. If you need a special size backing, we are manufacturers and
can cut them to the exact you need, often as few as one hundred boards,
depending on the size. Call us for samples and quotes!
How do you decide what storage materials to use for your collections?
Storage supplies are an investment
just like the items you purchased for your collection. You probably
wonder if you should even spend the money on the supplies. Won't they be
just fine if you keep them in the box they gave you at the estate sale?
Maybe yes- probably no. For the few pennies you spend on protection
supplies (per item) you are keeping insect infestation, water damage,
sun damage, dust, dirt and finger oil damage, corner and edge crimping
damage from bringing down the value of, or completely destroying your
collectible. It's not to say that some of these things won't happen
anyway, but the possiblitiy is greatly diminished. You should also check
your collections periodically to be sure that the environment that you
stored them is still suitable. The storage environment is equally as
important as the storage supplies. Most items should be stored in the
same type of environment that the human body is comfortable in. To
repeat the old mantra- No attics or basements!