METHOD AND APPARATUS FOR FORMING PAINT BRUSH HEADS

摘要

A method of forming a paint brush comprises the steps of assembling a plurality of bristles to form an array, dividing the array of bristles into a plurality of bristle knots, molding a body of plastic material onto the proximal end of each knot to form a rigid plastic head. A mold for use in molding paint brush heads comprises a pair of mold forming assemblies adapted to form a mold cavity therebetween, Each of the assemblies comprises an upper segment and a lower segment which are adapted to be retained in an end to end relationship, the lower segment having a length through which a bristle knot can be inserted with ease. molding machine for use in molding ferruleless paint brush heads is also disclosed in which thereis provided the improvement of a mold assembly comprising a first pair of molding belts, each having oppositely disposed forward run portions extending continuously through a bristle loading station and then through at least one molding station. The forward run portions of the first molding belts have dividers extending therebetween which form plurality of mold cavities proportioned to receive the proximal end of a bristle knot therebetween. A second pair of molding belts each having a forward run portion are also provided. The forward run portions of the second pair of molding belts being disposed opposite one another and extending through said molding station in an edge to edge relationship, one with each first molding belt to extend the molding cavity to the full height of the required brush head.