Method for increasing the skin or wound compatibility of a cellulose nonwoven fabric
The invention relates to a method for increasing the skin or wound compatibility of a hygiene or wound care product, which has a cellulose nonwoven fabric and which is present in the form of a web, or of a precursor product of said hygiene or wound care product. The product is stretched and deviated in at least one direction in such manner that the cohesion of fibers or flakes of the cellulose nonwoven fabric is weakened, reduced, disrupted, or broken down at least in some sections.
1. A method for manufacturing a hygiene or wound care product having increased skin or wound compatibility, the method comprising:
providing a precursor product in a form of a web of cellulose nonwoven fabric that comprises individual cellulose fibers or flakes, and superabsorbent polymers; and
pulling and deviating the precursor product in at least one direction in such a manner that cohesion of the fibers or flakes of the web of cellulose nonwoven fabric is weakened, reduced, disrupted, or broken down at least in some sections, said pulling and deviating including at least
guiding the precursor product over a plurality of calender rollers to deviate the precursor product in a longitudinal direction, and
guiding the precursor product over at least one deviating roller provided with circumferential ridges to deviate the precursor product in a transverse direction; and
forming the hygiene or wound care product by sealing the pulled and deviated precursor product between two sheathing layers that are joined together via a peripheral embossing, wherein the two sheathing layers and peripheral embossing prevent material mobilized from the precursor product in the pulling and deviating step from exiting from the hygiene or wound care product.
2. The method according to claim 1 , wherein the method reduces the stiffness of the hygiene or wound care product, or of the precursor product.
3. The method according to claim 1 , wherein the method comprises guiding the precursor product over a fulling station with at least one roller comprising fulling punches.
4. The method according to claim 1 , wherein the method further comprises feeding the hygiene or wound care product or the precursor product to a cutting station.
5. The method according to claim 1 , wherein the method comprises perforating, embossing and/or stamping the precursor product at least in some sections.
6. The method according to claim 1 , wherein the method comprises providing the hygiene or wound care product with a linear embossing in its marginal area.
7. The method according to claim 1 , wherein the hygiene or wound care product has a ratio of Gurley stiffness (mg) to density (g/cm 2 ) ranging between 100 and 5000 inclusive.