Full glass syringe leakage test

Today in Sina news to see a note on the whole glass syringe leak test, to share with you:

   The core and jacket of the plastic syringe should be clean and dry, absorb water to the nominal total capacity and be placed on the test stand. Apply the lateral force specified in Table 5 to the mandrel to form the maximum deflection. And then apply a specified axial pressure on the mandrel for 30 s to observe the leakage, should comply with the provisions of Article 8. 24 plastic injection device body negative pressure adhesion test will be absorbed into the syringe to 1/4 nominal total capacity, cone up. And then the core rod to the nominal total capacity, according to Figure 5 method after assembly, suction to 80 kPa negative pressure for 60 s, negative pressure gauge pointer shall not fall, the piston and the core rod shall not fall off.

   Plastic syringe cone spill test according to the provisions of paragraph 18.2 assembly, inhalation of 1/4 nominal total capacity of water, remove the air (allowing small residual bubbles), with the standard inner cone plug the cone hole, then the cone down , Return the syringe mandrel to the nominal total capacity for 15 s, observe the bubble, should meet the provisions of Article 11.

Plastic syringe cone separation test according to GB 7953-87 "injection needle, syringe cone joint adhesion and separation force test method" for verification. If the separation is found, rotate the syringe 90 °, repeat the above method test, should meet the provisions of Article 12.

   Test of the capacity error The syringe is connected to the standard glass gauge according to the method in Fig. 6, and the capacity is calibrated with water as the medium. The syringe surface reading method should be: the core, the upper edge of the core rod baseline is tangent to the lower edge of the dividing line. The standard glass gauge surface reading method should be: the lowest point of the meniscus is horizontally tangent to the upper edge of the index line. 29 glass syringe quenching and emergency performance test * the core, sets apart, jacket cone up, fixed in the net basket, first immersed in 18 ~ 20 ℃ water about 2 min, and then immersed in boiling water (this time the water temperature drop shall not exceed 2 ° C). Boiled 5 min proposed, quickly put 18 ~ 20 ℃ in the water (this time the water temperature rise shall not exceed 2 ℃).

    Taizhou thousands of Johnson Plastic Co., Ltd. is a commitment to the medical aspects of research and development, production and sales as one of the modern enterprise! The company mainly engaged in: pet chip syringes, medical silicone O-ring, medical medical plastic products!