| 摘要 |
<p>#CMT# #/CMT# Regenerated cellulosic fiber having a multi-limbed cross-section, is claimed. The cross section is formed of at least two multi-legged basic forms (1', 2') and respectively at least one of the limb ends of the basic forms is connected with the limb end of another basic form, and the length of a connecting limb (12) resulting by the connection of the two limb ends is greater than the length of the shortest of the other limb by a factor of at least 1.5, preferably 1.5-2. #CMT# : #/CMT# Independent claims are also included for: (1) a fiber bundle comprising a number of the above mentioned cellulosic fibers; and (2) manufacturing a regenerated cellulosic fiber or the fiber bundle, comprising providing a viscose spinning mass, spinning the viscose spinning mass by at least one opening of a spinneret in a spinning bath under formation of spinning threads. #CMT#USE : #/CMT# The regenerated cellulose fiber or the fiber bundle is useful in absorbent products, hygiene products, preferably tampons, incontinence products, sanitary towels and panty liners, preferably filling materials for blankets, pillows and sleeping bags, packaging for foodstuffs, preferably for meat products, papers, preferably filter paper, flock paper, clothing, and preferably inlay-fleeces, and wound dressing (claimed). #CMT#ADVANTAGE : #/CMT# The regenerated cellulose fiber exhibits increased absorption and expansion capacity e.g. Syngina absorbency and improved water retaining capacity, and provides increased fiber titers during spinning without affecting the cross-sectional shape. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic cross sectional view of the regenerated cellulose fiber with two multi-limbed basic forms connected with each other at the end of their limbs. 1', 2' : Basic forms 12 : Connecting limb #CMT#INSTRUMENTATION AND TESTING : #/CMT# Preferred Components: The spinneret includes multiple openings, where all the openings have an identical arrangement of sub-openings. The opening of the spinneret is formed of at least two multi-limbed sub-openings, where at the end of the sub-openings, in each case at least one of its limbs is connected with the end of the limb of the another sub-opening, where the limb ends comes close to each other such that the exiting spinning threads are combined with one another at the formed limb ends. #CMT#POLYMERS : #/CMT# Preferred Components: The basic forms includes Y-shaped basic forms, and/or X-shaped basic forms. The number of basic forms connected with one another is 2-10, preferably 2-4. The cross sections of the cellulosic fibers are equal and exhibit at least one axis of symmetry. At least a portion of the limb or all the limbs exhibit a ratio of length to width of 2:1-10:1. The cellulosic fiber has a fiber titer of 2-40 dtex, preferably 6-16 dtex. The cellulosic fiber is present in the form a staple fiber, short-cut fibers, or in the form of a filament tow. At least one of the limbs deviates with respect to its length of the other limb in the multi-limbed basic form and the length of at least one limb is greater than the length or the shortest limb by a factor of 2-10. #CMT#EXAMPLE : #/CMT# No suitable example given.</p> |
