| 主权项 |
1. A process for making a tufted article comprising a plastic body and a plurality of bristle tufts, the process comprising:
causing at least a first mold part and a second mold part to form a first mold cavity therebetween, the first mold part having a working surface and a plurality of holes formed therein to receive a plurality of bristle tufts, each bristle tuft comprising a plurality of individual bristles, the first mold cavity having a volume, a front end, and a rear end opposite to the front end; inserting the plurality of bristle tufts into the plurality of holes in the first mold part, each of the bristle tufts having a first end, a second end opposite to the first end, and a longitudinal axis running though the first and second ends, the first ends of the bristle tufts being disposed inside the first mold part while the second ends of the bristle tufts extend into the first mold cavity; injecting a molten first thermoplastic material into the first mold cavity through the front end thereof, thereby interconnecting the second ends of the plurality of bristle tufts with the first thermoplastic material, the molten first thermoplastic material having a melt-flow index of from about 0.1 g/10 min to about 500 g/10 min and a melt pressure in the first mold cavity of from about 10 psi to about 2000 psi; controlling and adjusting melt pressure of the molten first thermoplastic material according to a pressure-dominated algorithm comprising detecting at least 100 melt-pressure measurements per second upstream the front end of the first mold cavity; cooling the molten first thermoplastic material thereby causing the first thermoplastic material to solidify inside the first mold cavity; and disengaging the first mold part and the second mold part thereby releasing the solidified first thermoplastic material having the plurality of bristle tufts embedded therein. |
