+ Submit your article here

Make Your Workload Easy With Plastic Sheets

4/21/2016 5:36:15 PM | by Anonymous

Plastic Sheets

Plastic sheets thickness is frequently stated by the maker or it can be measured using a micrometer, as using a ruler would be unwise for such little sizes. The thickness of thin sheet material such as plastic sheets needs to be referred to as it will affect homes such as the sheet tightness - i.e. how easily the sheet can bend.

This is relevant to designers who need to define plastic sheeting - for example in the sign market. The appropriate thickness of a plastic cover sheet for a snap frame is different to that required for a hinged-door poster case or free-standing print holder. The former needs to be versatile, the latter have to be stiff. Interacting the right requirements requires an understanding of potentially unclear terms - for instance for US companies wanting to trade outdoors The United States and Canada.

The Mils Muddle

In the metric system of measurement, such as utilized in the UK, the millimetre (mm) is a hassle-free little device of measurement of sheet thickness. However for thicknesses below 1 mm it is often practical to divide 1 mm into 1000 parts and these systems are called microns. Thus 0.5 mm is 500 microns.

In U.S.A 'mil' is a measurement equal to 1/1000th of an inch. Mil is the same as the old imperial system Thou (one thousandth of an inch). Americans frequently mention the plural version as mils. This is potentially extremely confusing to metric users as it sounds identical to the colloquial for millimetres - spoken as mils though constantly written as mm. The meaning changes as one crosses the Atlantic.

To give some examples applicable, for example, to versatile plastic cover sheets of many poster frames (such as snap frames):.

400 micron or 0.4 mm = 15 mils (to be exact 15.75 mils). Americans may likewise compose.015" density. This thickness would just be suitable for small poster frames.
500 micron or 0.5 mm = 20 mils. In North America it might be composed.020" density. This is a very common density for a poster protector sheet for medium size poster frames such as snap frames. This sheet could be rolled up for hassle-free shipping if extra covers are needed.
1000 micron or 1mm = 39 mils (to be exact 39.37 mils). At this thickness plastic sheets are relatively rigid and might not be rolled up quickly, so shipping single sheets ends up being bothersome.
Stiff plastic sheets.

When the application calls for stiffer plastic sheet a normal thickness is 3mm (approx 1/8th inch). This would apply to the plastic 'glazing' utilized in the hinged door of a poster case or covered notice board. In this case the plastic functions like a window instead of a protective film. Plastic sheeting, such as acrylic or polycarbonate, with thickness 2mm or 3mm would also be defined for products such as free-standing plastic table-top print holders which need to be self-supporting.

Specifying by weight per unit area.

For thin sheets the weight of the sheet might be mentioned, rather than the density - in Europe stated as g/m2, generally abbreviated to gsm. Depending on the density of the product the g/m2 weight and micron thickness can coincidentally be fairly close in number and might be puzzled.

Measurement systems which may appear back-to-front.

Metals are also provided in thin sheets and in this case the thickness is frequently referred to as the 'gauge'. Gauge can be a little confusing to the unaware as it seems a 'in reverse' scale. The greater the number the thinner the sheet. For instance, 1.5 mm thick metal sheet is 16 gauge (16 SWG) whereas the much thinner 0.5 mm metal sheet is 24 SWG - SWG is the abbreviation for standard wire gauge, a long-established royal device of procedure. It is not normally used for plastic sheets.

The ISO (Worldwide Standards Organisation) metric paper size classification can likewise capture individuals out since it too can seem to be an in reverse scale: A8 paper is very small, A4 is closest to US letter size, and A0 is utilized for huge posters. The majority of European users will be very acquainted with A sizes whilst being baffled by the term 'letter size'. In US and Canada the reverse might hold true.

By appreciating these points confusion over measurement units can be minimized or eliminated in transatlantic trade connecting to thin plastic sheet products.

Are you sourcing for a product or service?

Do you need a quotation?