Welcome to polythenemailers2u.co.uk

We are a division of Polybags Ltd and we are dedicated to providing top quality mailing bags and courier bags at exceptionally low prices with a fabulous service. You can find some information on polythene mailers and polythene bags here but you may also like to browse or purchase from the full range of Polybags mailing bags and courier bags pages.

Polythene mailers

Mailing bags come in a wide variety of styles, shapes and sizes and can be made from a wide variety of materials that include paper, plastic, vinyl and canvas, as well as others. They are designed to meet the many different types of products that need mailed. Mailing bags have many functions that also go above and beyond just mailing your package. These additional functions range from protection of the product from weather or punctures to getting out a sales and promotional message. Plastic or polythene mailing bags are becoming quite a popular choice in today�s business world as well as a popular mailing bag choice for personal mailing needs as well. This is due to the wide variety of choices on the market today in the types of available polythene mailing bags with a wide range of sizes and colors. Their additional features also appeal to many different customers for a wide range of uses, both business and personal.

Clear polythene bags

Clear polythene bags are ideal for getting your brochure noticed these bags are made from high performance recyclable films with excellent clarity. Typically used for brochure magazines and catalogues, polythene mailers offer substantial savings in postage as they are lighter than paper, waterproof and still strong. Polythene mailing bags can be supplied as plain bags or with white write on panels and are available in a variety of standard stock sizes. If required we can make the envelope to any size to suit your requirements. Just talk to one of our sales team who can guide you through the options available.

Self adhesive poly envelopes

We manufacture self adhesive poly envelopes and bags in many different sizes and colours, printed or plain. Printing can display your postal details, i.e. business reply or postage paid, 'address viewing windows' or/and company logo or sales message. Light weight to reduce your postal costs or heavy duty for added security.

On packagingknowledge.com you can find more about polythene packaging, mailing bags and courier bags.


Polyethylene (IUPAC name polyethene) is a thermoplastic commodity heavily used in consumer products. Over 60 million tons of the material are produced worldwide every year.


Polyethylene was first synthesized by the German chemist Hans von Pechmann, who prepared it by accident in 1898 while heating diazomethane. When his colleagues Eugen Bamberger and Friedrich Tschirner characterized the white, waxy substance he had created, they recognized that it contained long -CH2- chains and termed it polymethylene. The first industrially practical polyethylene synthesis was discovered (again by accident) in 1933 by Eric Fawcett and Reginald Gibson at the ICI works in Northwich, England. Upon applying extremely high pressure (several hundred atmospheres) to a mixture of ethylene and benzaldehyde, they again produced a white waxy material. Because the reaction had been initiated by trace oxygen contamination in their apparatus, the experiment was at first difficult to reproduce. It was not until 1935 that another ICI chemist, Michael Perrin, developed this accident into a reproducible high-pressure synthesis for polyethylene that became the basis for industrial LDPE production beginning in 1939.

Physical properties

Depending on the crystallinity and molecular weight, a melting point and glass transition may or may not be observable. The temperature at which these occur varies strongly with the type of polyethylene. For common commercial grades of medium-density and high-density polyethylene, the melting point is typically in the range 120 to 130 �C ((250 to 265 �F). The melt point for average commercial low-density polyethylene is typically 105 to 115 �C (220 to 240 �F). Most LDPE, MDPE, and HDPE grades have excellent chemical resistance and do not dissolve at room temperature because of the crystallinity. Polyethylene (other than cross-linked polyethylene) usually can be dissolved at elevated temperatures in aromatic hydrocarbons, such as toluene or xylene, or chlorinated solvents, such as trichloroethane or trichlorobenzene.

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Mailing Bags specialist supplier of mailing bags, polythene mailers, courier bags and plastic envelopes. Offers discount ranges and high-impact ranges for all you mail-shot and postal packaging needs.