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.
Plus or minus 3mm (0.125″) or 2%, whichever is greater. If you need a minimum width, please discuss with us.
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).
Plus or minus 10%.
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.