초록 ▼

A syringe plunger is formed by a two-shot molding process. A hard plastic core is formed in a first mold, and the distal portion of the hard plastic core is subsequently overmolded with soft rubber. The result is a fully automated manufacturing process increasing quality and lowering costs, and a un

A syringe plunger is formed by a two-shot molding process. A hard plastic core is formed in a first mold, and the distal portion of the hard plastic core is subsequently overmolded with soft rubber. The result is a fully automated manufacturing process increasing quality and lowering costs, and a unique plunger having a hard plastic core and soft rubber exterior which are molecularly and permanently bonded together.

대표청구항 ▼

[ What is claimed is:] [1.] A syringe plunger comprising:a hard core, anda soft exterior molded over said hard core by a two-shot process while said hard core is cooling and incompletely cured,wherein said soft exterior is molecularly bonded to said hard core as a consequence of said two-shot proces

[ What is claimed is:] [1.] A syringe plunger comprising:a hard core, anda soft exterior molded over said hard core by a two-shot process while said hard core is cooling and incompletely cured,wherein said soft exterior is molecularly bonded to said hard core as a consequence of said two-shot process.