Cosmetic vacuum bottles are the main category of cosmetics. The vacuum bottles on the market consist of a cylindrical ellipsoidal container with a piston placed at the bottom. Its design principle is to use the contraction force of the spring, and not let the air enter the bottle, causing the vacuum state, and use the atmospheric pressure to push the piston of the bottom of the bottle to advance. However, due to the spring force and atmospheric pressure, sufficient force cannot be given, so the piston cannot be too tightly attached to the bottle wall, otherwise the piston will not be able to rise due to excessive resistance; on the contrary, if the piston is easy to advance and is prone to leakage, Therefore, vacuum bottles have very high requirements for the professionalism of the manufacturer. In this issue, we mainly talk about the basic quality requirements of vacuum bottles.
First, the appearance quality requirements
1. Appearance: vacuum bottle and emulsion bottle cap should be complete and smooth, without cracks, burrs, deformation, oil stains, shrinkage, clear and full thread; vacuum bottle, lotion bottle body should be complete, stable, smooth, bottle mouth straight and smooth The thread is full, no burrs, holes, no obvious scars, stains, deformation, and there is no obvious misalignment of the mold line. Transparent bottles should be clear and clear.
2, cleanliness: clean inside and outside, no free pollution, no ink stains.
3, outer packaging: packaging carton should not be dirty and damaged, the box should be lined with plastic protective bags, easy to scratch the bottle, cover packaging should be to avoid scratches. Packed in a fixed number of boxes, sealed with tape "work", not mixed. Each batch of shipments is accompanied by a factory inspection report, and the contents of the outer box identification, name, quantity, date of manufacture, manufacturer, etc. must be clearly identifiable.
