Factors affecting the quality of glass bottles

(1)Cracking is the most common flaw in glass bottles. It can be so fine that some of it can only be found in reflected light. The most common parts of the bottle are the mouth, the neck and the shoulder, and the body and the bottom of the bottle are often cracked.

(2) Uneven thickness of glass bottle This means that the glass on the glass bottle is not evenly distributed. The temperature of the glass drops is uneven, and the viscosity of the parts with high temperature is small and easy to blow thin; The resistance of the low temperature part is larger and thicker. The temperature of the model is not uniform. The high temperature side of the glass cools slowly and is easy to blow thin, while the low temperature side of the glass cools fast and is blown thick.

(3) The deformation temperature and action temperature of the glass bottle are too high, and the bottle removed by the forming die has not been completely shaped, and will often collapse and deform. Sometimes the bottom of the bottle is still soft will be printed on the conveyor belt and make the bottom of the bottle uneven.

(4) The glass bottle is not full, the drop temperature is too low or the model is too cold, which will make the mouth, shoulder and other places not full, resulting in gaps, dented shoulders and unclear patterns and other defects.

(5) Glass bottle cold spots on the surface of the glass is not smooth patches called cold spots. The main reason for this defect is that the model temperature is too cold, which usually occurs when the production starts or the production stops.

(6) Glass bottle protrusion glass bottle seam line protrusion or mouth edge protrusion defect. This occurs when the model parts are not manufactured correctly or fitted properly. Part of the glass will be forced out or blown out of the gap if the model is damaged, there is dirt on the joint surface, and the glass material falls into the initial mold before the top core is lifted too late to enter the position.

(7) Glass bottle wrinkles wrinkles come in various shapes, some are creases, some are pieces of very fine wrinkles. The cause of wrinkles is mainly due to the material drop too cold, the material drop is too long, the material drop does not fall in the middle of the initial mold and adhere to the wall of the mold cavity.

(8) Glass bottle surface shortcomings The surface of glass bottle hair, uneven, mainly due to the mold cavity surface is not smooth and caused by. The model’s lubricating oil is not clean or the oil brush is too dirty, will also make the glass bottle surface quality.

(9) Glass bottle bubbles produced in the forming process are often several large bubbles or a number of small bubbles concentrated together, which is different from the uniform distribution of small bubbles in the glass itself.

(10) Glass bottle scissors marks left on the bottle due to poor cutting. A drop often has two scissor marks, the upper scissor marks left on the bottom, affecting the appearance. The scissors below are left on the mouth of the bottle and are often the source of the crack