In the container design, change refers to the diversification of various parts of the shape, and unity refers to the overall sense of the shape. In the process of various creations and designs, change and unity are a universal law. Only the design without change and uniformity gives people a sense of disorder and disorder, and the design without change only gives people a sense of dullness and lifelessness.

① Line shape comparison: The so-called line shape in container design mainly refers to the outer contour line of the shape. It constitutes the shape of the shape. The line shape can be summarized into two categories: curve and straight line. Each line shape can represent an emotion factor.

② Comparison of volume: The volume of the model refers to the volume of each part of the body and the visually felt weight. It is just right to use it, and it can highlight the sense of volume and form characteristics of the main part of the body.

③ Space comparison:

A. Real space: Every entity needs a spatial location. This kind of space is called real space in shape.

B. Virtual space: refers to the formation of some additional pieces of the shape itself.

In the design, the proportion and contrast between the real space and the virtual space should be taken into consideration, and should not be overwhelming. The line shape must be unified, the volume must be balanced, the real space and the virtual space must be consistent and coordinated to make the shape vivid, thereby strengthening its sense of form and generating a certain artistic appeal.

④ Texture contrast: In the design, it is mainly reflected in the material and decorative carving effect.

① Single shape: the repetition of line and volume achieves a harmonious beauty of order and rhythm.

② Matching shapes: This type of shape is used in the series packaging design, which means repeating the main linear features on the entire packaging shape, setting different proportions and capacities according to different uses, to achieve the relationship between repetition and echo.

The partial changes of the shape are for the enrichment of the overall content, not to be cumbersome, and not to destroy the harmonious unity of the overall relationship.

The part of the modeling has various line angles, mouth modeling and bottom modeling structure, etc., on the premise of conforming to the overall style tone, the local processing is accurately in place to make the modeling characteristics more prominent.

① Stable in actual use

② Stable visual perception: For different shapes, the volume and form relationship between the main body and the accessories or between the top and bottom, left and right of the shape should be appropriate to achieve a visual balance.

① Proportion and scale should be suitable for the functional requirements of the product. Due to different product characteristics, different proportions and scales should be adopted for different product characteristics.

② The proportion and scale should be suitable for the aesthetic requirements of the product

A. Straight type-concise, generous, rigid and beautiful.

B. Non-straight type-exquisite, compact, flexible and beautiful.

C. Proportion of the supporting product portfolio-moderate proportions, uniform lines, seeking change, and the difference is not easy to be too large.

③ The proportion and scale should be suitable for the process requirements of the product

④ The proportion and scale should be suitable for ergonomics

① Conduct targeted investigations and data collection on relevant modeling and information;

② Summarize the surveyed data for analysis;

③ Promote the designed text plan;

④ Choose appropriate materials and manufacturing techniques;

⑤ Design image draft and design description;

⑥ Calculate the capacity of the container;

⑦ Drawing process drawing and product effect drawing;

⑧ Make a prototype model of the container.