Perforation Types / Product examples and Applications

Round Holes Type R Quality Product Examples Main Applications
Gantois Perforated Metals_Page_02_Image_0001 Round Diagram trsp 250x250 The staggered arrangement of the holes provides optimum mechanical strength combined with a personalised design.
For sorting and sifting
industries, the staggered
arrangement aids efficiency.
Filter elements, strainer
Spacers for autoclaves
Drying trays, speakers
Lighting, Furnishings,
Displays…
Filtration, separation, ventilation,bracketing, screening, isolation,air conditioning, absorption, sound insulation, decoration, drying, protection, shredding, sorting, grading, urban development

 

Materials
The most popular material is stainless steel to DIN 1.4301 (AISI 304) or DIN 1.4401 (AISI 316); selected specifications are also available in chrome steel to DIN 1.4016 (AISI 430).

Wire Diameter

Selecting the wire diameter involves a number of different considerations.The thicker the wire, the stronger and more robust the mesh and the longer the service life.On the other hand, a thicker wire will reduce the open area and therefore reduce screening or sifting performance.

Reducing the wire diameter, whilst maintaining the same aperture size, increases the number of apertures within a defined surface area. Both performance and efficiency will increase.

Parameter Thicker Wire Thinner Wire
Screening Efficiency arrow up arrow down
Flow arrow up arrow down
Open Area arrow up arrow down
Number of Apertures arrow up arrow down
Abrasion Resistance arrow down arrow up
Strength arrow down arrow up
Mesh Dimensions
Standard widths are 1245mm or 1580mm, but depending on the weaving equipment used slight variances are common. Standard roll length is 30m, individual pieces cut to size are available.

Mesh Selection

The mesh selection, particularly with fine meshes, depends on many process details and
often can only be selected by carrying out trials.

The open area is influenced directly or indirectly by the service life of the screen,
this is illustrated in the following table.

Open Area Mesh Type Apertures
> 60% extra light 0.56 – 16
48 – 60% light 0.212 – 5
36 – 48% standard 0.038 – 2
< 36% heavy 0.020 – 0.600

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