wadding

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wadding

any fibrous or soft substance used as padding, stuffing, etc., esp sheets of carded cotton prepared for the purpose

Wadding

 

a fluffy mass of fibers, loosely interwoven in various directions. According to the means of producing wadding, it is classified as natural—woolen, silken, down, cotton, linen, hempen, pine-needle, and asbestos; or artificial—cellulose, glass, metallic, slag, and basalt.

Natural wadding is divided according to use into apparel, furniture, technical (thermal-insulation, fireproof, and so on), packing, sheet bonded, and medical.

In the manufacture of wadding the raw material is pulled apart, separated, and cleansed of foreign matter. The fibrous mass obtained is formed into so-called laps on machines of an opener-scutcher unit; the formless mass of fibers constituting the lap is transformed into a product of definite thickness. In the production of medical wadding the raw material is subjected to boiling in alkali under pressure and is then processed with sodium hyposulfite. As a result, the fiber acquires its whiteness and its characteristic properties: the ability to rapidly become wet and absorb moisture. Medical wadding is divided into hygroscopic and compress types. Hygroscopic wadding is white, separates readily into layers, and is used to absorb fluid secretions (pus or ichor) in bandaging wounds over layers of gauze dressing. Compress wadding is used for heat insulation of wrapped or bandaged parts of the body (for example, with hot compresses) and also as a soft padding when applying immobilized casts (for example, plaster casts).

Artificial wadding is widely used in construction as a thermal- and sound-insulating material and in the chemical industry for filtration of liquids and gases. A special form of wadding is the so-called vatilin—that is, wadding sized on one or both sides with adhesive emulsion. Vatilin is a substitute for wadding in sewing apparel, lining material, and so on.

wadding

[′wäd·iŋ]
(mineralogy)
wad
References in periodicals archive ?
Also in 1950, Johnson & Johnson, New Brunswick, NJ, introduced a rectangular underpad product based on cellulose wadding and with a plastic film backing and using a wet strength tissue as a coverstock.
From this initial overview of the development of the modern all-in-one disposable diaper we can see that the product has evolved from a simple creped cellulose wadding structure that, despite its limitations, worked, to a complex multicomponent structure as illustrated in Figure 4.
The earliest products, based on cellulose wadding, had an absorption capacity determined by the quantity and characteristics of the cellulose wadding used.
If a firm is to produce thermal insulation waddings in an inland region, its products can be manufactured and distributed onsite, reducing transportation costs considerably.
This will provide a big market for those consumer oriented nonwovens including various warmth retention materials (spray bonded waddings, silk floss-like waddings, thermal bonded waddings), disposable sanitary products (napkins, diapers, medical articles, operating gowns), various interlinings and home textiles (carpets, wall coverings, curtains).