Production of special-shaped bottles

So-called special-shaped glass bottles refer to various glass bottles with non-circular cross-sections, such as three-sided bottles, four-sided bottles, eight-sided bottles, oval bottles, etc. (Figure 2-44). Through the unique bottle body design, the glass bottle not only meets the requirements of product packaging, but also makes the container have certain artistic, decorative and display value, meeting the spiritual and psychological needs of consumers. In addition, special-shaped bottles also have relatively good anti-counterfeiting functions in technology. Most special-shaped bottles have complex structures, high processing technology requirements, difficult mold making, and certain difficulty in imitation, which makes special-shaped bottles have technical anti-counterfeiting functions.

The contents of glass packaging containers are in the form of flakes, granules, powders, pastes, viscous liquids and liquids. Different forms have different requirements for the shape, structure and design of glass packaging containers.
For block and flake contents, such as pharmaceutical tablets and candies, they are often squeezed and stuck when filled on the automatic line because of their angular shapes. The container design should adopt a short neck and a relatively large diameter structure. The cross-section of the bottle body should be round or oval, and the height of the bottle body should not be too high.
For granular contents, such as solid beverages, cream, chocolate beans, sugar beans, etc., the glass containers used should be designed with a large mouth and a short neck cross-section, which is suitable for various shapes, but the height of the bottle body should not be too high, and the convenience of spoon taking should be considered.
Paste contents are non-solid and non-liquid states, such as peanut butter, jam, bean paste and other sauce foods, cream cosmetics, pastes and other cream products. Glass packaging containers for such products should have a large mouth, short neck, and a short and thick bottle body to facilitate the use of tools.
For viscous liquid products such as honey, in order to facilitate pouring and consumption, a larger diameter is used, the cheek is appropriately shortened, and a certain length is used. It is more appropriate to use a transitional structure.
Liquid contents have strong fluidity, and a small mouth, long neck, and a slow transition between neck and shoulder are suitable, which is convenient for controlling flow, slowing down flow rate, and avoiding overflow and spraying.
For contents that require light protection, colored glass can be selected, such as green, brown, opalescent, etc., but attention should be paid to the impact on the original color of the product inside.
In short, in the process of bottle shape design, the designed bottle shape should be novel and beautiful, and should also be conducive to strength and stability. It should also be humanized and convenient to use and transport. Only by comprehensively considering various factors and distinguishing the primary and secondary factors can the glass shaped bottle achieve the purpose of being both beautiful and practical.

The bottom of a glass bottle is generally designed to be concave, which can reduce the contact points in the contact plane and increase stability. The bottom and the root of the bottle are transitioned by an arc. A large transition arc is conducive to improving the strength of the bottle, but too large an arc will reduce the support area and reduce the stability of the bottle. Under the condition of a certain quality of the bottle, the minimum thickness of the bottle bottom is used as the design principle. The thickness ratio of the bottle bottom is specified, and the bottle bottom is strived to have a smaller thickness difference to reduce internal stress. Figure 2-45 shows the structural form of the bottom of a common glass bottle, and Figure 2-46 shows the structural form of a concave spherical bottle bottom.