glass cosmetic bottles wholesale

glass Cosmetic Bottles wholesale

Our company has always been committed to better production capacity and process production of cosmetic packaging bottles. The plastic products of secondary molding have the following characteristics: first, the replicability and accuracy are relatively good; Second, the structure of plastic products can be more complex, and it can produce a surface with carved or engraved characters; Third, the uniformity of thickness depends to a large extent on the shape of the product.
(2) Vacuum blister molding
Vacuum blister molding, which mainly makes the pressure difference between the two sides of the plate and the sheet blank, and makes the blank adsorb on the model by vacuuming. Vacuum (negative pressure), mainly to drill the bottom of the mold into a small aperture, installed in the vacuum compressor (or pump) vacuum; Compressed air (positive pressure) is passed through the upper part, or both. Belongs to the former, for vacuum blister molding; The rest is called pneumatic forming, also known as compression forming or pressure forming. At present, the secondary processing is usually used vacuum method, can produce the maximum pressure difference, only 0.7~0.9 kg/cm in the industry, if such a large pressure difference can not meet the requirements of the formed products, it should be used compression molding. However, the pressure of commonly used compressed air is generally not greater than 3.5 kg/cm. The basis for selecting the pressure value is mainly to see the pressure resistance of the mold and equipment.
Vacuum molding mold, you can use a single mold (positive or negative mold), mold, you can also do without mold.