Glass bottles and containers can be classified into various categories based on different criteria, including the neck size, geometric shape, purpose, color, and neck shape. Here’s an overview:

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Classification by Neck Size

1. Narrow Neck Bottles:

• Definition: These are bottles with an inner neck diameter smaller than 22mm.
• Applications: Commonly used for packaging liquids, such as carbonated drinks and wines.

1. Small Neck Bottles:

• Definition: Bottles with an inner neck diameter between 20–30mm.
• Applications: Typically short and wide, used for products like milk.

1. Wide Neck Bottles (also known as sealing jars):

• Definition: Bottles with an inner neck diameter larger than 30mm. They generally have a short neck and flat shoulders, resembling jars or cups.
• Applications: Ideal for packaging canned food and viscous materials due to their wide opening, which allows for easy filling and emptying.

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Classification by Geometric Shape

1. Round Bottles:

• Definition: Bottles with a circular cross-section.
• Characteristics: The most common shape, known for high strength and durability.
• Applications: Widely used for beverages, cosmetics, and pharmaceuticals.

1. Square Bottles:

• Definition: Bottles with a square cross-section.
• Characteristics: Lower strength compared to round bottles and more challenging to manufacture, hence less common.
• Applications: Niche uses where a distinct design is desired.

1. Curved Bottles:

• Definition: Bottles with a circular cross-section but featuring curves along their height, either concave or convex.
• Characteristics: Unique shapes like vase-style or gourd-style, highly appealing to customers.
• Applications: Often used for decorative purposes or premium products.

1. Oval Bottles:

• Definition: Bottles with an oval cross-section.
• Characteristics: Smaller capacity but a distinctive appearance.
• Applications: Popular for niche or luxury products.

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Classification by Purpose

1. Beverage Bottles:

• Applications: Primarily used for packaging wine, beer, and other beverages.
• Shape: Usually round for better durability and ease of production.

1. Daily Use Packaging Bottles:

• Applications: Used for everyday items like cosmetics, ink, glue, and more.
• Characteristics: Wide variety in shapes and sealing mechanisms to suit different products.

1. Sealing Jars:

• Applications: Designed for canned food, these are predominantly wide-neck bottles with capacities ranging from 0.2–0.5L.
• Characteristics: Designed for easy filling and secure sealing.

1. Pharmaceutical Bottles:

• Applications: Used for medicines and medical solutions.
• Examples: 10–200mL brown narrow neck bottles, 100–1000mL infusion bottles, and hermetically sealed ampoules.

1. Chemical Reagent Bottles:

• Applications: Suitable for storing chemicals and reagents.
• Characteristics: Capacities typically range from 250–1200mL, with screw caps or ground stoppers for secure sealing.

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Classification by Color

1. Clear Transparent Bottles: Commonly used for showcasing the product’s appearance.
2. White Bottles: Provide a clean, simple look.
3. Brown Bottles: Used to protect light-sensitive contents, such as certain medicines and oils.
4. Green Bottles: Often used for wine and beverages.
5. Blue Bottles: Popular for decorative purposes or premium products.

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Classification by Neck Shape

1. Necked Bottles: Have a distinct neck for specific sealing mechanisms.
2. Neckless Bottles: Lack a prominent neck, commonly seen in jar-like containers.
3. Long Neck Bottles: Feature an elongated neck, typically used for beverages like wine and spirits.
4. Short Neck Bottles: Have a shorter neck, commonly used for products like milk or juices.
5. Thick Neck Bottles: Robust necks designed for durability.
6. Thin Neck Bottles: Sleek and delicate necks, often used for perfumes or luxury items.

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