Basf Corporation

Other

Robert N Armstrong

Otto M Ilg

Thomas F Corbin

John A Hodan

Wei Ping Li

Roger H Fink

Robert A Tyler

Robert E First

Henry C Ramsey

A process for manufacturing substantially 100% nylon 6 carpet provides a nylon 6 face yarn to a nylon 6 support means so that the yarn and the support means form a carpet having a face side which is displayed when the carpet is installed and a back that binds the face yarn to the support means wherein said binding is with molten or dissolved nylon 6.

Recyclable carpet

Process for manufacturing substantially 100% nylon 6 carpet

A sealing plate upstream of a spinneret has cylindrical flow channels, at least some of which have a first diameter. Each of the flow channels corresponds in position to a bore in the spinneret plate. The number and denier of extruded filaments can be altered by simply changing the plate. The plate provides a seal by deflecting under the extrusion pressure.

Apparatus for changing both number and size of filaments

A device for changing the filament count from a spinnerette assembly includes a sealing plate positioned upstream from the spinnerette assembly to prevent the passage of the material being spun into one or more particular spinnerette bores.

Sealing plate for a spinnerette assembly

A process for converting a continuous multifilamentary yarn into a staple-like yarn involves continuously conveying continuous multifilamentary yarn onto a rotatable wheel having a peripheral yarn receiving groove and at least one radially disposed needle within the wheel and in registry with the groove. The needles are in various stages of retraction and extension depending upon the relative rotational position of the wheel. By laterally contacting the multifilamentary yarn in the groove, the barbs of the needles catch and break a fraction of the filemants from the side of the yarn so that the yarn is not forced upward out of its grooved path.

Apparatus for producing staple-like yarn from continuous filament yarn

A method of increasing the absorbency of cellulosic fibers by treating the cellulosic fibers with an aqueous acid solution having a pH value of no more than 4. The treatment is carried out for a time sufficient to obtain the desired absorbency. Optionally, the aqueous acidic solution treatment can be preceded or succeeded by a hot water treatment to further increase the absorbency of the cellulosic fibers. The cellulosic fibers find particular application in nonwoven articles that require high absorbency, i.e., diapers, tampons, medical sponges, etc.

Growing community of inventors

Asheville, NC, United States of America

Robert N Armstrong