Animal ear tag

Claim 1

A substantially flat animal ear tag having on one side at least one central section integral with and disposed lengthwise of said tag and being substantially thicker than the body of said tag, said tag having an area, said thick section occupying at least one third of said tag area, said tag having edges, said tag having integral beads, said edges of said tag extending lengthwise and parallel to said central section and having a thickness essentially the same as that of said central section, said tag having been extruded at a temperature of below about 150° C., preferably at a temperature below about 125° C. and said tag having a round, hollow connector, said entire tag except for said connector having a composition comprising I. a vinyl chloride polymer selected from the group consisting of homopolyvinylchloride, vinyl chloride-vinyl acetate copolymer containing up to about 50% by weight of vinyl acetate, and vinyl chloride-vinylidene chloride copolymer containing up to about 50% by weight of vinylidene chloride, and mixtures of the same, II. a plasticizer or mixtures of plasticizers for said vinyl chloride polymer in an amount sufficient to obtain the required flexibility for the vinyl chloride polymer and to assist in migration and exudation of insecticide, III. a migratory and volatile insecticide in an amount of from about 5 to 100 parts by weight per 100 parts by weight of the vinyl chloride polymer, and IV. conventional compounding ingredients for said vinyl chloride polymer, said central section having an end portion, said end portion having a centrally located hole, said round hollow connector disposed in said hole, said connector having a back plate for pressing against the remaining side of said tag to hold said connector to said tag, and said tag capable of rotation about said connector.