The requirements for plastic syringe appearance and adhesion

Plastic syringe appearance requirements: Take the appropriate amount of this product, in the bright natural light, face up to visual inspection:

The head part of the needle tube should be flat, no collapse, no flash, no bending, no cracks, no gag defects. The inner wall of the tube is smooth and smooth without chromatic aberration.

Cap: full shape, uniform color, no cracks, no deformation.

Push rod: full shape, uniform color, no deformation.

Piston: Fully formed, no flash, no obvious shrinkage.

plastic syringe

About adhesion: Take 10 pieces of this product, inject half of the water into the plastic syringe, insert the piston into the injection, remove the cap, remove the residual air, cover the cap, and apply 30N pressure to the piston through the push rod for 30s, the piston The contact part with the needle tube shall not leak, and the contact part between the tube cap and the needle tube shall not leak.