摘要:
A web, formed from dielectric fibers and non-dielectric fibers, which has been subjected to corona discharge to improve the particulate filtration properties of the web is provided. The dielectric and non-dielectric fibers may be intermingled within the web such that the distribution of the dielectric and non-dielectric fibers within the web is generally uniform. In one embodiment, the dielectric fibers may be formed from a thermoplastic polymer, and particularly polyolefin and the non-dielectric fibers may be formed from cellulose, and particularly wood pulp.
摘要:
A disposable injector device for inserting tampons and the like into body cavities. The device is made from heat-degraded thermoformed water-soluble polyvinyl alcohol which is rendered odor-free by mixing a proton acceptor with the polyvinyl alcohol before the polyvinyl alcohol is heat-degraded by a thermoforming operation.
摘要:
Apparatus for the recovery of absorbent wood pulp fibers in fluff form from scrap and waste products such as production reject disposable diapers and sanitary napkins, includes a combination of cutter means to reduce the scrap products to small pieces, pneumatically agitating means to separate fibers from other components of the waste products, and a traveling screen for separating airborne fibers from other larger portions of the scrap products.
摘要:
Flexography basically is a relief printing process similar in many respects to letterpress but using fluid, fast drying inks, rubber plates, rotary presses and being commonly web fed. The rubber plates are supported on a plate cylinder usually by a fabric material carrying adhesive on its opposed major faces. Such fabric is advantageously replaced by a resilient compressible flexible composite which provides for maintaining the conformability of the usual printing plate to the work to be printed while sufficiently minimizing plate distortion as to avoid poor quality printing. The composite is compressible without significant lateral spreading and is of uniform thickness overall, suitably exhibiting a tolerance not in excess of plus or minus 0.003 inch and preferably plus or minus about 0.001 inch.
摘要:
Sanitary napkins are disclosed comprised of an inner core of absorbent material and a cover which consists essentially of unfinished thermoplastic fibers. Preferably the cover is a web of continuous filaments of unfinished polypropylene fibers.
摘要:
The combination of a single fold tampon capable of being mechanically spread open by the user after insertion to form a transverse block within the vagina, and an inserter-spreader therefor. The tampon is folded in half to form two adjoining legs. A withdrawal string is attached at the fold. The outer extremity of the upper end portion of each leg is provided with a downwardly facing pocket. The inserter-spreader is provided with a pair of arms which fit into the pockets and may be operated by the user to mechanically spread apart the legs of the tampon within the vagina after insertion.
摘要:
Absorbent paper sheets in multi-ply web form in which the outer webs of the sheet are creped and consist of a series of ribs and grooves. The webs have their ribs secured together by adhesive dispersed in a pattern consisting of individual adhesive zones. The adhesive zones are obtained by providing in embossing apparatus cooperable rolls each having alternating ribs and grooves, the ribs of one roll being provided with protuberances and the other with recesses. The protuberances cover a relatively small area of the total rib area and carry a web on the protuberances through an adhesive applicator so that a relatively small area of the web receives adhesive for attachment to a second web.
摘要:
Modified tobacco fibers, having reduced bonding ability, are produced by cooking tobacco stalk material and then soaking the resulting fibers in a caustic solution. A combination of tobacco lamina and mid-rib is extracted; the fibers remaining after extraction are mixed with the modified fibers and the mixture formed into a sheet which is impregnated with the extract material.
摘要:
Pressure sensitive fastening tapes for disposable diapers in which the free end of the tape has the pressure-sensitive adhesive area covered by at least two separately removable sections of a protective covering sheet. One section may be removed for the initial fastening of the diaper leaving the other section in place. When it is desired to adjust the fastening of the diaper, the original fastening can be undone and new adhesive means provided by removing the second section to uncover a fresh unused adhesive area.
摘要:
A pressure-sensitive closure assistance system and method particularly useful in connection with surgical gowns requiring a sterile surface on the back of the gown. The closure may comprise a snap fastener or other pressure-sensitive closure such as those comprised of tapes or hook and loop type elements. In accordance with the invention, a cover made of paper or the like encloses a closure element, and an assistant who need not be sterile-gloved may grasp a folded edge of the cover. The overlap is then drawn across the back exposing the closure elements which are pressed through the cover to ensure contact between the closure elements. The assistant then may detach the closure assistance tab and discard it. Thus, no part of the back of the gown is required to come in contact with an element which has not been sterilized.