Thermoplastic moulding compound

A method of using glass fibers having a tensile strength according to DIN ISO 527-5 of 86.0 to 92.0 GPa, a tensile elastic modulus according to DIN ISO 527-5 of 2600 to 3200 MPa and a softening point according to DIN ISO 7884-1 of 900° C. to 950° C., the method comprising using the glass fibers to increase an impact strength and/or breaking elongation of molded articles made of molding materials comprising thermoplastic polyamides and elastomers;

• wherein the method comprises mixing components A) to C) and optionally D):
• a) 30.0% to 89.0% by weight of at least one thermoplastic polyamide as component A),
• b) 1.0% to 30.0% by weight of at least one elastomer as component B), selected from the group consisting of
• b1) copolymers of ethylene with at least one comonomer selected from the group consisting of C3-12-olefins, C1-12-alkyl (meth)acrylates, (meth)acrylic acid and maleic anhydride as component B1),
• b2) polyethylene or polypropylene elastomer as component B2),
• wherein components B1) and B2) may also be additionally grafted with maleic anhydride,
• c) 10.0% to 69.0% by weight of glass fibers having a tensile strength according to DIN ISO 527-5 of 86.0 to 92.0 GPa, a tensile elastic modulus according to DIN ISO 527-5 of 2600 to 3200 MPa and a softening point according to DIN ISO 7884-1 of 900° C. to 950° C. as component C), and
• d) 0% to 30.0% by weight of further additives and processing aids as component D),
• wherein the percentages by weight of the components A) to D) sum to 100% by weight,
• and further comprises extruding, injection molding or blow molding thermoplastic molding material to produce fibers, films, or molded articles made of the thermoplastic molding material.