Buy plastic bags
Polybags Ltd. is an UK manufacturer and supplier of plastic bags. Having been on the market for over 45 years Polybags is a high quality plastic bag supplier. In these days marketing is very important and for that a good an easy way of advertising your compnay is to have a custom plastic bag with your own logo. Knowing the importance of advertisement Polybags offers plastic bag printing in different sizes and shapes. Go and have a look at the plastic bags page of Polybags Ltd.
What are plastic bags
A plastic bag or plastic pouch is a type of flexible packaging made of thin, flexible, plastic film. Plastic bags are used for containing and transporting food, powder, ice, chemicals, waste, etc. Bags can be preformed, filled and sealed later or can be formed at the filling and sealing operation. A pouch is usually a small or moderate sized bag.
How are plastic bags made
Most Plastic bags are made from polyethylene, more commonly known as polythene, which is made from crude oil and natural gas, non-renewable resources.
The most common way to produce polythene bags is by blown film extrusion, also called the 'tubular film process'. In Blown film production process polythene melt is extruded through an annular slit die, usually vertically, to form a thin walled tube. Air is introduced via a hole in the centre of the die to blow up the into the tube causing it to expand and form a bubble. Mounted on top of the die, a high-speed air ring blows onto the hot film to cool it. The tube of film then continues upwards, continually cooling, until it passes through nip rolls where the tube is flattened to create what is known as a 'lay-flat' tube of film.
This lay-flat or collapsed tube is then taken back down the extrusion ' tower' via more rollers. The lay-flat film is then either kept as such or the edges of the lay-flat are slit off to produce two flat film sheets and wound up onto reels. If kept as lay-flat, the tube of film is made into bags by sealing across the width of film and cutting or perforating to make each bag. This is done either in line with the blown film process or at a later stage.
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Biodegradable plastic bags
Biodegradable plastic bags quickly degrade when disposed of by the action of bacteria, these include kitchen waste and refuse bags, bin liners, carrier bags and standard bags. Degradable plastic bags instead degrade by the action of chemicals.
Clear plastic bags
Clear plastic bags are ideal for bagging up itmes when they are posted as an extra protection, ideal for packing craft items, magazines ,ideal for storing of items, these coluf be used for food as well. These bags are string polybags and lightweight.
Clear plastic carrier bags
These clear plastic carrier bags are made from a clear low density plastic film. These bags are suitable to hold up to 3 kilos in weight, ideal for those who are looking for to show their product. This type of carriers are commonly used in gift stores, boutiques, clothing outlets and other retail stores.
Heavy duty plastic bags
These heavy duty plastic bags are suitable for multi-uses including food. You could use small plastic bags to pack non granulated/non liquid food storage or large plastic bags for your items that need protecting. Lightweight and durable these heavy duty poly bags are manufactured in the UK and are available in various sizes.
Plastic shopping bags
Plastic shopping bags, or carrier bags, are a common type of shopping bag in several countries. Most often these bags are intended for a single use to carry items from a store to a home but often reused for storage or as a bin bag. Heavy duty plastic shopping bags are suitable for multiple uses as shopping or plastic sacks.
Resealable plastic bags
Resealable plastic bags, also known as self-seal bags or minigrip bags are ideal to secure contents and avoid leakage or contamination. Resealable bags have a simple plastic ridge that clicks shut and pulls open for continual re-use. Easy to open and close over and over again. Whether you need to have your logo printed plastic bags are also available!