Patent classifications
D04H3/08
COMPOSITE SHEET COMPRISING BIODEGRADABLE OR COMPOSTABLE MATERIALS AND USES THEREOF
A composite sheet comprising two or more layers is described where the degree of abrasiveness of can be controlled. The sheet can comprise partially or wholly biodegradable or compostable materials or blends thereof. Methods of preparing the composite sheets are also described.
METHODS OF CREATING SOFT AND LOFTY NONWOVEN WEBS
A method of creating a soft and lofty continuous fiber nonwoven web is provided. The method includes providing two molten polymer components having different melting temperatures to a spinneret defining a plurality of orifices, and flowing a fluid intermediate the spinneret and a moving porous member. The moving porous member is positioned below the spinneret. The method includes using the fluid to draw or push the two molten polymer components, in a direction that is toward the moving porous member, through at least some of the plurality of orifices to form a plurality of individual bi-component continuous fiber strands. The method includes depositing the continuous fiber strands on the moving porous member at a first location to create an intermediate continuous fiber nonwoven web, and removing and/or diverting some of the fluid proximate to the first location to maintain loft and softness in the deposited intermediate continuous fiber nonwoven web.
NONWOVEN CELLULOSE FIBER FABRIC WITH HOMOGENEOUSLY MERGED FIBERS
A nonwoven cellulose fiber fabric, in particular directly manufactured from lyocell spinning solution, wherein the fabric comprises a network of substantially endless fibers, and wherein the fibers are homogeneously merged substantially over the entire fabric.
Method of forming a web from fibrous material
Fibrous material webs and methods of making the fibrous material webs. Binderless webs can be formed in a continuous process where fiber material, such as glass is melted and formed into fibers. The fibers are formed into a web of binderless glass fibers or a web with a dry binder. The binderless web or the web with dry binder can be layered and/or the fibers that make up the web can be mechanically entangled, for example, by needling.
Method of forming a web from fibrous material
Fibrous material webs and methods of making the fibrous material webs. Binderless webs can be formed in a continuous process where fiber material, such as glass is melted and formed into fibers. The fibers are formed into a web of binderless glass fibers or a web with a dry binder. The binderless web or the web with dry binder can be layered and/or the fibers that make up the web can be mechanically entangled, for example, by needling.
Absorbent stitchbonded fabrics and dimensionally set stitchbonded fabrics
Disclosed herein a stitch-bonded fabric comprising at least one fibrous web layer having a plurality of the fibers with a first length of more than about 25 mm, oriented substantially in a cross-direction (XD) of the stitch-bonded fabric wherein a density of the at least one fibrous web layer is less than about 0.12 g/cm.sup.3. The at least one fibrous web layer is stitch-bonded with yarns following a pattern of linear stitches along a machine direction (MD) spaced from about 1.4 mm to about 4.0 mm along XD, and repeating with a spacing front about 0.8 mm to about 2.5 mm in MD, wherein the plurality of fibers having said first length are captured by multiple stitches. A density of fibers and yarn enclosed within the stitches is above about 0.10 g/cm.sup.3 and below about 5.0 g/cm.sup.3 and the linear stiches are depressed below exposed the wales between the linear stitches along MD. The stitch-bonded yarns can be heat set to stabilize the stitch-bonded fabric.
Absorbent stitchbonded fabrics and dimensionally set stitchbonded fabrics
Disclosed herein a stitch-bonded fabric comprising at least one fibrous web layer having a plurality of the fibers with a first length of more than about 25 mm, oriented substantially in a cross-direction (XD) of the stitch-bonded fabric wherein a density of the at least one fibrous web layer is less than about 0.12 g/cm.sup.3. The at least one fibrous web layer is stitch-bonded with yarns following a pattern of linear stitches along a machine direction (MD) spaced from about 1.4 mm to about 4.0 mm along XD, and repeating with a spacing front about 0.8 mm to about 2.5 mm in MD, wherein the plurality of fibers having said first length are captured by multiple stitches. A density of fibers and yarn enclosed within the stitches is above about 0.10 g/cm.sup.3 and below about 5.0 g/cm.sup.3 and the linear stiches are depressed below exposed the wales between the linear stitches along MD. The stitch-bonded yarns can be heat set to stabilize the stitch-bonded fabric.
Absorbing airlaid product
A liquid-absorbing multi-layered sheet with a liquid-absorbing central layer and a first and a second outer layer of fibers, tissue or film provided at each their side of the central layer is provided. The central layer is airlaid and includes cellulosic fibers, superabsorbents and heat-adhesive binder fibers. The sheet is peculiar in that the percentage of heat-adhesive binder fibers in the central layer is between 1% and 7% of the total weight of fibers in the central layer. In production, a continuous web with the three layers is conveyed through a heating zone for heating the web, wherein the heating temperature and the heating time are adapted to at least a partial melting of the heat-adhesive binder fibers in the central layer for binding the fibers in the central layer and for binding the outer layers to the central layer.
Partially fixated semi-finished textile
A semi-finished textile for producing a fiber composite component part has a textile structure and a fixation structure so as to provide a semi-finished textile that can be easily handled and that is suitable for use in complex component part shapes. The textile structure includes a first multitude of reinforcement-fiber bundles of high-performance fibers. Displacement sections are formed between adjacent reinforcement-fiber bundles and adjacent reinforcement-fiber bundles can be displaced against each other. The fixation structure fixates the reinforcement-fiber bundles, depending on the textile structure, with a fixation pattern in such a way that the reinforcement-fiber bundles are fixated at least partially and the displacement sections remain at least partially free.
Partially fixated semi-finished textile
A semi-finished textile for producing a fiber composite component part has a textile structure and a fixation structure so as to provide a semi-finished textile that can be easily handled and that is suitable for use in complex component part shapes. The textile structure includes a first multitude of reinforcement-fiber bundles of high-performance fibers. Displacement sections are formed between adjacent reinforcement-fiber bundles and adjacent reinforcement-fiber bundles can be displaced against each other. The fixation structure fixates the reinforcement-fiber bundles, depending on the textile structure, with a fixation pattern in such a way that the reinforcement-fiber bundles are fixated at least partially and the displacement sections remain at least partially free.