EP 1142505 A2 20011010 - Method of brush manufacture
Title (en)
Method of brush manufacture
Title (de)
Verfahren zur Herstellung von Bürsten
Title (fr)
Procédé pour la fabrication de brosses
Publication
Application
Priority
DE 20006311 U 20000406
Abstract (en)
To bond bristles to the heads of brushes, where the bristle tufts (16) are mounted on platelets (14) of plastics and the same material as the brush body (10), an edge is formed around the platelets. As the platelet is bonded to the brush head by ultrasonic welding, the shaped edge acts as an energy concentrator. The shaped edge tapers (18) towards the brush body, to lie at the base of the opening (12) formed in the brush body to hold the platelet with the bristles in a shaped fit. The outer contour of the bristle platelet is shaped to form a shoulder over the rim of the opening in the brush body to hold the bristle platelet, and lie on the surface surrounding the opening. Or the peripheral shoulder around the platelet can lie within a recess around the opening, to lie flush with the brush body surface. The platelet peripheral shoulder extends as far as the transit zone of the brush body, forming the neck piece of a toothbrush. A press unit holds the platelet of bristle tufts against the brush body during ultrasonic welding. The gap between the bristle platelet and the brush body is filled with a plastics mass in an injection mold, where the plastics mass is injected into the gap. The ultrasonic welding unit is combined with an adhesive applicator. The opening in the brush body, to accommodate the platelet with the bristle tufts, has a peripheral wall which converges inwards. The peripheral wall of the bristle platelet is angled to fit into the opening wall, and is bonded in place by ultrasonic welding or an adhesive.
Abstract (de)
Zum Verbinden von mit Borstenbüscheln (16) versehenen Plättchen (14) aus Kunststoff mit Bürstenkörpern (10) aus, insbesondere demselben, Kunststoff mittels Ultraschallschweißen wird jeweils an einem zum Bürstenkörper (10) weisenden Umfangsrand des Plättchens (14) eine Kante (18) geformt, die beim Ultraschallschweißen als Energie-Konzentrator wirkt. <IMAGE>
IPC 1-7
IPC 8 full level
A46D 3/04 (2006.01)
CPC (source: EP US)
A46D 3/04 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
US 2001050507 A1 20011213; US 6779851 B2 20040824; AT E347290 T1 20061215; DE 20006311 U1 20010809; DE 50111577 D1 20070118; EP 1142505 A2 20011010; EP 1142505 A3 20030611; EP 1142505 B1 20061206; ES 2275577 T3 20070616
DOCDB simple family (application)
US 82286501 A 20010402; AT 01107718 T 20010330; DE 20006311 U 20000406; DE 50111577 T 20010330; EP 01107718 A 20010330; ES 01107718 T 20010330