
Polypropylene (PP) Anti-Static & are ideal to highlight your records, thanks to their very high transparency and Glass like brilliance. Polyethylene (PE) is Inexpensive flexible, soft & antistatic with a standard transparency.

To facilitate your choice, we created this page to explain the characteristics of these Four materials: Polyethylene, Polypropylene, PVC & Mylar. To meet the requirements of our customers, we have Four different kinds of Outer Sleeves in our catalog Typical gauge sizes and microns equivalent are It is related to the SI measurement of microns as 1 micron = 4 gauge. What does Mil / Gauge mean when describing a Sleeve Mil/Gauge is the measurement of thickness of plastic Outers & Inner Sleeves. While bleaching removes the lignin, the paper making process produces other detrimental byproducts such as hydrochloric acid or sulfuric acid. Paper is derived from the cell wall of plants lignin, one of the chemicals contained in the cell walls, is unstable and light sensitive and decomposes into acidic products. Cheap, non-acid-free paper sleeves degrade with time.

It is nevertheless a safe bet that 99%+ % of Audiophiles & Record Collectors would agree that LPs shouldn't be stored in plain paper sleeves.
