Dosage projectile and method of manufacture

A polycell for forming a dosage projectile suitable for administering a biologically active agent to an animal remotely, the polycell comprising:

• a first component having a semispherical shell formed from a polymer selected from polyamide polymers including those derived from sebacic acid, polymers derived from vegetable oil acids with or without dimerization, terephthalic acid and/or ethylenediamine, polypropylene homopolymers or copolymers, polyphenylene sulphide, polylactic acid, or monomers of ethylene and a structural agent selected from silicon dioxide, sodium carbonate, calcium oxide, magnesium oxide, aluminium oxide, glass spheres, glass bubbles, glass fibres, glass rods, calcium carbonate, and talcum powder;
• a second component having a semispherical shell formed from a polymer selected from polyamide polymers including those derived from sebacic acid, polymers derived from vegetable oil acids with or without dimerization, terephthalic acid and/or ethylenediamine, polypropylene homopolymers or copolymers, polyphenylene sulphide, polylactic acid, and monomers of ethylene and a structural agent selected from silicon dioxide, sodium carbonate, calcium oxide, magnesium oxide, aluminium oxide, glass spheres, glass bubbles, glass fibres, glass rods, calcium carbonate, and talcum powder;
• and
• a filling port in the first component or the second component;
• wherein the first and second components are formed by injection moulding or blow moulding;
• wherein the first and second components when joined form a polycell having a substantially spherical hollow body adapted to receive an agent to treat an animal;
• wherein the polymer of the first and second components is processed to deliver atactic, syndiotactic or isotactic polymerization, subjected to ultra-violet light and/or mechanically stretched in order to develop polymer crystallization and compatibility with the structural agents to produce hydrodynamic fragmentation characteristics in the polycell.