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Archival Safety and Sheet Protectors


INFORMATION ON SHEET PROTECTORS AND ARCHIVAL SAFETY

Here you will find basic information about archival safety in connection with the use of binder accessory for storage of documents, Cd, diskettes, photos, business cards, laser and ink jet prints, etc.

Choosing pages & albums, have in mind that the album pages are the most important part of the two. The pages will have direct contact to the documents you are about to store and will so have the most influence on the long term storage effect. The binders are of cause also important and should not be neglected in the archival process.


WHAT NOT TO DO

Plastic enclosures manufactured from polyvinyl chloride (PVC) are NOT recommended for archival photographic or document storage. This plastic, often referred to as "vinyl" is not as stable as some other plastics. It can contain volatile plasticizers (softener) and emit damaging hydrochloric acid as it deteriorates. This deterioration is often easy to detect as the plastic starts to get yellow, bridled and may even start to crack. Multiple page may even stick together, specially in warmer climate.
Unfortunately before these signs shows it may be too late as the material in the sheet protector most likely have been smeared or copied on to the sheet protector itself. It happen very easy with laser prints and color printed collectors cards as baseball cards. In other words do not use vinyl or PVC sheet protectors for storage of any valuable belongings.

WHAT YOU NEED TO KNOW

To avoid the above horror scenario manufactures turned to other types of more stable plastic that are in general considered archival safe:

  • Polyethylene (PE)
  • Polyester (Mylar)
  • Polypropylene (PP)

They all have their advantages. Polyethylene is the cheaper of the 3 but the finish of the product is not as nice and not as clear as the two others materials. Polyester looks sharp and is very clear but it is an extremely expensive material. Finally there are Polypropylene (PP). This material is considered archival safe as it is as close to PH neutral as technical possible with plastic and does not contain any plasticizers.

It should be noticed that Keepfiling only market archival safe polypropylene sheet protectors and binders. On rare occasions we may provide access to vinyl sheet protectors or a vinyl binder if a customer request this specifically. We then make sure to highlight the fact it is not archival safe.


PVC BEING BANNED

In some countries PVC has been banned for use with kids toys and other products coming in close contact to children. The softener in the PVC is widely believed to be released into the environment with time and being a possible source for cancer. Many studies has indicated this even though this is much disputed (read more here). In addition Polyvinyl chloride (PVC) also has the disadvantage of releasing toxic chloride fumes when ignited. In comparison Polypropylene (PP) release Co2 and water vapor when ignited.

IS THIS A VINYL PAGE ?

Here is one easy way to check if your pages are made in vinyl (PVC). Open up the page and smell the air in it. If there is a "thick odor" to it, it is for sure made in vinyl (PVC). Polyester and Polypropylene are odor less, unfortunately so is some newer types of vinyl or there are a very limited odor or just a hint of it and it can be very hard to detect so this test is not 100% safe.

ADDITIONAL INFORMATION

If you need more information on this subject you can also check the National Archives they have a good article about how to choose the right album for photos. It is a good article but in general sums up what has been written above. See it here.
If you should have further questions you are very welcome to contact us. We will do our utmost to help answer your questions or find answer to them should we know now them.