Ettevõtte juhid tagavad ..?
Ettevõtte juhid tagavad ...
Ettevõtte juhid tagavad .., Ettevõtte juhid tagavad ... Ettevõtte juhid tagavad ... Ettevõtte juhid tagavad .., surve või agitatsioon, ja niiskust, nii et kiud lukustuvad ja takerduvad, muutes nende kooshoidmiseks liimide kasutamise tarbetuks.
Muud kiud, nagu viskoos või puuvill, võib sisalduda viltmaterjalides, but they are used as fillers to reduce the cost of the material. Synthetic fibres are used for synthetic felt.
Like non-woven fabrics, the density, hardness, and thickness of felt can be closely controlled and can be easily shaped, since it has no grain.
Felt has excellent shock and sound absorbency, but poor drape, low tensile strength, and usually will not return to shape when unduly stretched.
Felt inspection
Density of the felt is the key point when selecting felt, because it will loose its recovery oversized, but will have poor abrasion performance. Thickness and fibre catergories effect performance as well. Density is usually measured with the unit of g/cm3.
Felt is classified with wool fineness, density and colour. Kuid, it is also classified by strength, tensibility and capillarity in the technology.
