In the context of plastic bags and films, "mu" (µ) is a unit of measurement representing microns, which are thousandths of a millimeter (0.001 mm). It indicates the thickness of the plastic material. A higher micron value means a thicker, more durable plastic.
Understanding Microns and Gauge in Plastics
The provided text clarifies the relationship between microns and gauge: one micron equals one thousandth of a millimeter. It uses examples to illustrate this:
- A 20-micron (or 80-gauge) bag is relatively thin, suitable for light-duty protection against dust and moisture, holding approximately 1.5 kg.
- A 125-micron (or 500-gauge) bag is significantly thicker, classified as heavy-duty, implying greater strength and protection.
Therefore, "mu" in the context of plastics is a synonym for micron, a measure of thickness crucial for determining a plastic's strength and suitability for various applications.
