This invention relates to a process comprising using ionic liquids for preparing poly glycol from tetrahydrofuran. The TPE is used to be a polymer matrix of the material. A cutting wire hub provides a sealing entrance for a cutting wire. In the preferred embodiment of the invention, the conduit is formed as a bore milled along a longitudinal axis of the weld horn. According to the present invention, N-o-benzoylglycine monosodium salt tetra-hydrate is dissolved in a small amount of a mixed solvent of water and ethanol, and therefore it is possible to manufacture high-dosage product by freeze-drying.