Abstract 1. In the extrusion of a hollow thermoplastic conduit, a method for fixedly attaching a label to said conduit comprising: positioning a thermoplastic label on a plasticized surface of said conduit, said label having a thickness less than about one-half mil; passing said conduit, with said label positioned on the plasticized surface thereof, through a sizing ring thereby forcing said label to be embedded in said conduit to a depth substantially equal to the thickness of said label and simultaneously deforming said conduit to a depth substantially equal to the thickness of said label and simultaneously deforming said conduit to preselected dimensions; thereafter cooling said conduit and said label to thereby fuse said conduit and said label one to the other.
In the extrusion of a hollow thermoplastic conduit, a method for fixedly attaching a label to said conduit comprising: positioning a thermoplastic label on a plasticized surface of said conduit, said label having a thickness less than about one-half mil; passing said conduit, with said label positioned on the plasticized surface thereof, through a sizing ring thereby forcing said label to be embedded in said conduit to a depth substantially equal to the thickness of said label and simultaneously deforming said conduit to a depth substantially equal to the thickness of said label and simultaneously deforming said conduit to preselected dimensions; thereafter cooling said conduit and said label to thereby fuse said conduit and said label one to the other.
Claim 2
Dependent Claim
120 words
In the extrusion of a hollow thermoplastic conduit, a method for fixedly attaching a label to said conduit comprising: positioning a thermoplastic label on a plasticized surface of said conduit, said label having a thickness less than about one-half mil; passing said conduit, with said label positioned on the plasticized surface thereof, through a sizing ring thereby forcing said label to be embedded in said conduit to a depth substantially equal to the thickness of said label and simultaneously deforming said conduit to a depth substantially equal to the thickness of said label and simultaneously deforming said conduit to preselected dimensions; thereafter cooling said conduit and said label to thereby fuse said conduit and said label one to the other.