The Difference Between Controlled Glass Bottles And Molded Glass Bottles

Manufacturing process
Controlled bottle: After drawing the glass tube, it is processed into shape using a vertical rotary table machine, requiring only two sets of mold wheels and not a complete set of molds. ‌
Mold bottle: The molten glass liquid is injected into the mold using a kiln row and column machine to form, requiring a complete set of molds. ‌
Appearance characteristics
Controlled bottle: with a bright surface, high transparency, and uniform wall thickness. ‌
Molded bottle: The surface is relatively rough and the transparency is low. ‌
Material difference
Controlled bottle: In China, low borosilicate glass is commonly used, but high borosilicate or medium borosilicate glass can also be produced, with excellent acid and alkali resistance and thermal shock resistance. ‌
Molded bottle: usually made of sodium calcium glass, with weak acid and alkali resistance, but lower cost. ‌
Application scenarios
Controlled bottle: suitable for freeze-dried preparations, powder injections, and other drugs that require high chemical stability, such as vaccines and antibiotics. ‌
Molded bottles: commonly used for ordinary oral liquids, infusion bottles, etc. Some high-end products (such as Class I borosilicate molded bottles) can replace controlled bottles.