FIELD: personal and household objects.
SUBSTANCE: method of making tooth brush with needle-shaped bristles, upon realisation of which the ends of bristles, made from polyester and fitted into the body of the tooth brush, are sharpened by mechanical filing. The sharpening process is completed by dipping the sharpened bristles into a chemical reagent. The second and third objects are versions of implementing the method and a tooth brush, made using these methods.
EFFECT: easier tooth brush making.
15 cl, 6 dwg
