Method for producing a fiber connection component
View Patent ↗In a process of producing a composite fiber component, fiber-containing layers pre-impregnated with resin and dry fiber-containing layers are alternately deposited on one another. The pre-impregnated fiber-containing layers have an excess of resin. The fiber composite component is integrated by causing the excess resin of the pre-impregnated layers to infiltrate the adjacent dry fiber-containing layers.
1. A process for producing composite fiber components, said process comprising:
alternately depositing fiber-containing layers pre-impregnated with resin and dry fiber-containing layers on one another, the pre-impregnated fiber-containing layers having an excess of resin; and
causing said excess resin in said pre-impregnated layers to infiltrate said dry fiber-containing layers,
wherein, after the depositing of the layers, the infiltration of the composite fiber component takes place while heat is added,
wherein flow boundaries of the resin, during the infiltration, are controlled by feeding heat that is variable with respect to time and space, and
wherein the temporally and spatially variable feeding of heat is performed by a defined time-related activation of a heating medium spatially distributed in a tool so that a temperature of the tool at the flow boundaries of the resin is greater than temperatures of the tool outside of the flow boundaries of the resin.
2. The process according to claim 1 , wherein the fiber-containing layers comprise at least one layer having a structure that is one of woven and laid, and at least one unidirectional fiber layer.
3. The process according to claim 1 , wherein the fiber-containing layers contain one of glass fibers, carbon fibers, aramid fibers, and a combination thereof.
4. The process according to claim 1 , further comprising residual venting of the composite fiber component using a semi-permeable membrane which is permeable to air but impervious to resin.
5. The process according to claim 1 , wherein the layers are deposited with edges of the dry layers projecting beyond edges of pre-impregnated layers.
6. The process according to claim 1 , wherein the temporally and spatially variable feeding of heat is performed using a hardening tool of a correspondingly developed design.
7. The process according to claim 1 , wherein:
pressure is applied during the infiltration treatment; and
said pressure is generated by a technique selected from the group consisting of a mechanical, hydraulic and pneumatic pressure.
8. The process according to claim 1 , wherein the process is one of static and continuous.
9. The process according claim 1 , wherein:
the fiber-containing layers are first deposited in a flat configuration; and
the fiber-containing layers are subsequently shaped while being heated.