Polybags tolerances

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 which 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.

Our manufacturing tolerances, which adhere to British Standard BS7344:1990, are detailed below. Please do not hesitate to contact us to discuss any specific tolerance required on your job.

Tolerances

• 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: Plus or minus 10% for bespoke manufactured goods (does not apply to stock products).

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

Polybags standards

View general or food and medical standards we have achieved, or regulatory standards we operate to.