The polythene film extrusion process involves blowing up a molten bubble of film and then cooling and cutting it to shape. This is a technically difficult process and is affected by external conditions (such as heat and humidity) and by the flexibility and stretchiness of the film. Whilst we strive to obtain exact dimensions, a degree of manufacturing tolerance is therefore always required on every product.

Please do not hesitate to contact us to discuss any specific tolerance required on your job.

  • Width
    Plus or minus 3mm (0.125″) or 2%, whichever is greater. If you need a minimum width, please discuss with us.
  • Length
    Plus or minus 6mm (0.25″) or 2%, whichever is greater. Please note that all measurements are cut to cut and will therefore include a bottom skirt of about 8mm on end weld bags (apart from grip seal bags where length is measured from the grip seal to the bottom of the bag).
  • Gauge
    Plus or minus 10%.
  • Quantity
    For manufactured goods only, Plus or minus 10%.

Please note: our bags are normally manufactured bottom weld although we reserve the right to manufacture in side weld unless a specific request is made for a particular type.

Lynx Polythene Ltd
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