What is Stretch Film, also known as Stretch Wrap

Stretch film, commonly referred to as stretch wrap, is a specialized plastic film produced through a casting method. It’s extensively used for wrapping and securely holding various materials. The primary component of stretch film is Linear Low-Density Polyethylene (LLDPE), and it may include types like Butene (C4), Hexene (C6), or Octene (C8). To enhance its cling or adhesive properties, it often contains Metallocenes and Very Low-Density Polyethylene (VLDPE).

There are two main types of stretch film: manual and automatic.

Manual Stretch Film: These rolls typically weigh between 4 to 9 pounds each and are designed to stretch about 150%. The most common widths are 5”, 12” and 18”, with 18” being particularly prevalent. They come in various thicknesses, ranging from 25 to 80 gauge. In USA, these rolls usually have a 3-inch inner diameter core, though 2-inch cores are also available.

Automatic Stretch Film: These heavier rolls, each weighing over 20 pounds, are tailored for machine use. They’re engineered to be highly elastic and exceptionally puncture-resistant to withstand the intense tension and stress exerted during machine wrapping. These films are formulated to stretch at least 250%. The most popular width is 20”, followed by 30”, with roll lengths typically exceeding 5000 feet. Common thicknesses are 70 and 80 gauge, but variations range from under 37 to over 120 gauge.