1、Design evaluation The first step in customization is bottle design, but this is not only about polishing the appearance, but also a technical evaluation of the feasibility of the mold. Many brands directly look for factories with renderings, but ignore that packaging must first serve the formula. You need to first determine the product type: essence dropper bottle, face cream jar, toner spray bottle or oil split bottle, and determine the capacity, acid-base property and photosensitivity of the formula. Excellent design must consider the demolding angle to ensure that the bottle body has sufficient slope for smooth demolding; At the same time, it is necessary to ensure uniform wall thickness to avoid deformation or breakage of the glass due to stress concentration during cooling shrinkage. In addition, the position of the parting line needs to be cleverly hidden (such as at the edges), and surface treatment (smooth, frosted, or textured) also needs to be planned in advance, as this di...