C03C 15/00 - Surface treatment of glass, not in the form of fibres or filaments, by etching
A61J 1/05 - Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids
Provided is a simple method for manufacturing a glass container having high chemical durability without introducing a special processing step or processing equipment. The present invention includes a glass container manufacturing step for molding a glass tube under heating and obtaining a glass container, a cleaning step for cleaning the inside surface of the glass container obtained in the glass container manufacturing step using a cleaning liquid comprising water, an acid aqueous solution, a surfactant aqueous solution, or an aqueous solution of an acid to which a surfactant is added, and a strain removal step for heating and increasing the temperature of the glass container cleaned in the cleaning step and subsequently cooling the glass container to remove strain therefrom, the temperature of the glass container being 30-150°C and the cleaning time being 10-15 seconds in the cleaning step, and the maximum atmospheric temperature in the strain removal step being controlled so as to be 650-670°C.
The objective of the present invention is to facilitate pulling a plunger back than when pushing the plunger in a syringe. A syringe (10) is provided with an edge wall (24) penetrated by a nozzle (21), an outer cylinder part (20) to which the edge wall (24) is connected on one end, and a gasket (30) that slides back and forth inside the outer cylinder part (20), wherein the outer cylinder part (20) includes a liquid holding chamber (3) adjoining a rear side of a sliding part (1) of the gasket (30), and along with the sliding of the gasket (30) toward the back, a liquid (5) in the liquid holding chamber (3) enters the sliding part (1) of the gasket (30) so as to lubricate the sliding part (1).
Provided is a glass product manufacturing apparatus which can prevent glass components from being eluted by contents from the inner surface of a glass product and which can manufacture the glass product at low costs without any surface treatment agent or the like. The apparatus comprises a vertical molding machine (2) for molding a glass material being heated, into a predetermined shape, and a heat treatment furnace (4) for removing the residual strain from a glass product (3) molded by the vertical molding machine (2). A product transfer route (5) from the vertical molding machine (2) to the heat treatment furnace (4) is equipped with a cooling device (6) and a washing device (7) sequentially in the recited order. The cooling device (6) acts as a feed means (8) for feeding the glass product (3) into the washing device (7), and cools the glass product (3) to a temperature of about 150°C or lower. The washing device (7) is equipped with a washing unit (16) for feeding a washing liquid to the inner surface of the glass product (3), and a rinsing unit (17) for feeding clean water to the washed inner surface of the glass product (3).
A61J 1/14 - Containers specially adapted for medical or pharmaceutical purposes DetailsAccessories therefor
A61J 1/05 - Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids
B65D 1/00 - Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
C03B 23/11 - Reshaping by drawing without blowing, in combination with separating, e.g. for making ampoules
Provided is a process for producing glass containers wherein elution of alkaline constituents from the inside surface of the glass is reduced. This process for producing low alkali glass containers includes the following steps: (1) a step of producing a glass container wherein a glass container is obtained by hot moulding of a glass tube, (2) a cleaning step wherein the inside surface of the glass container obtained in the step of producing a glass container is cleaned with a cleaning solution comprising water, an aqueous acid solution or an aqueous solution of a surfactant, and (3) an annealing step in which the glass container cleaned in the cleaning step is subjected to annealing by heating and then cooling.
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