| 摘要 |
<p>A protective cover is described for enclosing an upholstered or padded article. The cover, which is formed as a pillow/cushion case (1), is made of air and moisture permeable microporous ultrafilter material. The pillow case is closed along its side edge (2) by sealing the edges by welding, for example, high-frequency welding, in such a way that the barrier effect is not compromised. The opening (3) of the pillow case for inserting the pillow is formed by a flap (4) which is sealed to the body of the pillow case by, for example, a zip-fastener which is covered by a single-sided adhesive tape (5). The micropores of the material from which the protective cover is made must be less than half a thousandth of a millimeter (0.0005 mm) in outside dimension to prevent microscopic organisms and their dried faecal pellets from passing through the cover into the surrounding atmosphere and causing an allergic reaction.</p> |
