| 摘要 |
<p>PURPOSE:A quenched tempered glass container having stable practical strengths, prepared by molding a glass container having a specified wall thickness range in the body part thereof, quenching and tempering the molded material, and forming a compression stress layer in a specific range on the inner and the outer surfaces of the body part. CONSTITUTION:A glass container is molded to give an average glass wall thickness value (X) in the body part of 1.7-3.8mm., the maximum glass wall thickness value in the range expressed by formula I and the minimum glass wall value thickness in the range expressed by formula II. The resultant glass container is then quenched in a temperature range of 0-150 deg.C below the deformation point of the glass at a cooling rate of about 20-30 deg.C/sec by adjusting the velocity of a fluid, e.g. air. Thus, a compression stress layer of 170-750kg/cm<2> is formed on the inner and the outer surfaces of the body part. The compression stress layer balanced with the glass wall thickness of the quenched tempered glass container provides the synergistic increase in internal pressure strength and impact strength and stably retained strength values thereof.</p> |
