Method for manufacturing a windshield wiper blade
View Patent ↗A method for manufacturing an elongated windshield wiper blade includes providing a tandem wiper blade ( 1 ) made in one piece of an elastomeric material, which is composed of two wiper blades ( 2, 3 ) integrally joined together, and subsequently cutting the tandem wiper blade ( 1 ) so as to separate the two wiper blades ( 2, 3 ) each having a wiping head ( 4 ) facing away from a windshield to be wiped and a wiping lip ( 5 ) to be placed in abutment with a windshield to be wiped. The two wiper blades ( 2, 3 ) forming the tandem wiper blade ( 1 ) are integrally joined together at the location of their wiping heads ( 4 ) facing towards each other, wherein the tandem wiper blade ( 1 ) is cut into the two separate wiper blades ( 2, 3 ) along their wiping heads ( 4 ) facing towards each other.
1. A method for manufacturing an elongated windshield wiper blade to be placed in abutment with a windshield to be wiped, said method comprising the steps of providing a tandem wiper blade made in one piece of an elastomeric material, which is composed of two wiper blades integrally joined together; and subsequently cutting said tandem wiper blade so as to separate said two wiper blades each having a wiping head facing away from a windshield to be wiped and a wiping lip to be placed in abutment with a windshield to be wiped;
wherein said two wiper blades that form said tandem wiper blade are integrally joined together at the location of their wiping heads facing towards each other; and
said tandem wiper blade is cut into said two separate wiper blades along their wiping heads facing towards each other.
2. The method according to claim 1 , wherein said tandem wiper blade is provided with a surface coating prior to being cut.
3. The method according to claim 1 , wherein said wiper blades are provided with a surface coating after being separated.
4. The method according to claim 2 , wherein said surface coating is a polymer coating.
5. The method according to claim 1 , wherein said tandem wiper blade is made by extrusion, injection molding or compression molding.
6. The method according to claim 1 , wherein said wiping head and said wiping lip of each wiper blade are formed in one piece and interconnected by a tilting web.
7. The method according to claim 6 , wherein said wiping lip of each wiper blade is formed to widen into wedge shoulders toward said tilting web.
8. The method according to claim 1 , wherein said wiping head of each wiper blade is provided with one central groove in which a longitudinal strip of an elongated, elastic carrier element is to be disposed.
9. The method according to claim 1 , wherein said wiping head of each wiper blade is formed with two opposite grooves each groove open at one lateral longitudinal side thereof, in each of which a longitudinal strip of an elongated, elastic carrier element is to be disposed.
10. The method according to claim 3 , wherein said surface coating is a polymer coating.