Product liquid analysis report

I. Abnormal problem description:

When the push head is opened, there is liquid in the center hole of the lock cover.

                                                                  (As shown in the example picture above)

II. Cause analysis:

1. The pump head and the filled liquid bottle are in a tilted, lying or inverted state before use.

The liquid enters the body cavity through the exhaust window of the body (attached with the figure below); when the push head is opened, the piston rises upward, and the liquid in the body cavity will be forced to squeeze out, and most of the liquid will flow back into the bottle through the exhaust window of the body. The liquid adhered to the surface of the main column will follow the push head to rise and be brought out to the matching gap of the center hole of the lock cover.

2. This phenomenon is limited to individual cases when the pump head is opened for the first time.

3. Summary/Preventive measures:

1. Summary:

Lotion pump--The problem of liquid in the center hole of the lock cover when pressing the head to open is a small functional defect common to all pump products of the same structure in the industry. It is not just our products that have similar problems; as long as the pump head is tilted or inverted for a long time after being matched with the filled liquid bottle, similar liquid will appear when the head is opened; but it will not affect the normal use of the pump head.

2. Preventive measures:

The pump head is placed upright after matching with the liquid bottle (as shown below), and try to avoid being placed in a state of large tilt, horizontal or inverted for a long time.