Method for pre-forming a textile semi-finished product and a pre-forming apparatus
View Patent ↗A method for preforming a textile semi-finished product, including arranging a textile having at least two layers of fibers, interwoven fibers and/or fiber bundles that are at least in part arranged on top of each other. The method also includes; fixing-in-position of the fibers of the textile against each other and then cutting-to-size of the textile. The fixing-in-position of the textile involves irradiating via a laser beam in order for the melt-on binder of the textile to be melted on only in a localized fashion and not evaporated. The fixing-in-position occurs along a fix-in-position line, the cutting-to-size occurs along a cut-to-size line, and the fix-in-position line is located at a distance relative to the cut-to-size line that is so small that any fraying of the textile is reduced or suppressed altogether.
1. A method for preforming a textile semi-finished product comprising the steps:
arranging a textile, wherein the textile includes
at least two layers of fibers arranged at least in part on top of each other; or interwoven fibers or fiber bundles;
fixing-in-position of the fibers of the textile against each other, and then
cutting-to-size of the textile, wherein
the fixing-in-position of the fibers of the textile comprises irradiating with a laser beam in order for a melt-on binder of the textile to be melted only in a localized fashion but not evaporated,
the fixing-in-position of the fibers of the textile occurs along a fix-in-position line and the cutting-to-size occurs along a cut-to-size line, and
the fix-in-position line is located at such a small distance relative to the cut-to-size line that any fraying of the textile is reduced or suppressed altogether.
2. The method according to claim 1 , further comprising the steps:
covering the layers with a film that is transparent for the light of the laser; and
irradiating via the laser beam through the film.
3. The method according to claim 2 , wherein the fixing-in-position of the fibers occurs before the cutting-to-size, and the cutting-to-size of the textile occurs using a mechanical cutting device.
4. The method according to claim 2 , wherein a semi-finished product comprising a plurality of layers is manufactured by arranging another textile on the textile and repeating the steps of arranging, fixing-in-position, and cutting-to-size.
5. A method for preforming a textile semi-finished product comprising the steps:
a) arranging a textile on a substrate, wherein the textile includes a melt-on binder and (1) at least two layers of fibers arranged at least in part on top of each other or (2) interwoven fibers or fiber bundles;
b) covering the layers with a film that is transparent to laser light;
c) suctioning air from an area between the substrate and the film;
d) fixing-in-position of the fibers of the textile against each other by irradiating the textile with a laser beam having a power density to melt, but not evaporate, the melt-on binder of the textile in a localized fashion;
e) cutting-to-size of the textile;
f) removing the cut-to-size textile from the covering;
g) impregnating the textile semi-finished product after the fixing-in-position and cutting-to-size; and
h) curing the impregnated semi-finished product in order to obtain a composite fiber component,
wherein the fixing-in-position of the fibers of the textile occurs along a fix-in-position line and the cutting-to-size occurs along a cut-to-size line,
wherein the fix-in-position line is located at such a small distance relative to the cut-to -size line that any fraying of the textile is reduced or suppressed altogether, and
wherein steps a) - h) are performed in order.
6. The method according to claim 5 , wherein the cutting-to-size of the textile occurs using a mechanical cutting device.
7. The method according to claim 5 , wherein a semi-finished product comprising a plurality of layers is manufactured by arranging another textile on the textile and repeating the steps of arranging, fixing-in-position, and cutting-to-size.
8. A method for preforming a textile semi-finished product comprising the steps:
a) arranging a textile on a substrate, wherein the textile includes a melt-on binder and (1) at least two layers of fibers arranged at least in part on top of each other or (2) interwoven fibers or fiber bundles;
b) covering the layers with a film that is transparent to laser light;
c) suctioning air from an area between the substrate and the film;
d) fixing-in-position of the fibers of the textile against each other by irradiating the textile with a laser beam having a power density to melt, but not evaporate, the melt-on binder of the textile in a localized fashion;
e) cutting-to-size of the textile;
f) removing the cut-to-size textile from the covering;
wherein the fixing-in-position of the fibers of the textile occurs along a fix-in-position line and the cutting-to-size occurs along a cut-to-size line,
wherein the fix-in-position line is located at such a small distance relative to the cut-to -size line that any fraying of the textile is reduced or suppressed altogether, and
wherein steps a) - f) are performed in order.
9. The method according to claim 8 , wherein the cutting-to-size of the textile occurs using a mechanical cutting device.
10. The method according to claim 8 , wherein a semi-finished product comprising a plurality of layers is manufactured by arranging another textile on the textile and repeating the steps of arranging, fixing-in-position, and cutting-to-size.