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Classification of glass bottles and jars and their uses

There are many types of glass bottles and jars. According to the usage conditions, they can be divided into recycled bottles and non-recyclable bottles (disposable bottles); according to the manufacturing method, they can be divided into molded bottles (bottles and jars formed with models) and Control bottles (bottles made of glass bottles); according to their categories, they are divided into food packaging bottles, medicine bottles, cosmetic bottles, cultural and educational supplies bottles, etc. But they can generally be classified into two categories: thin-neck bottles (small-mouth bottles) and thick-neck bottles (large-mouth bottles).

  1. Narrow-neck glass bottle (small mouth bottle)

Any bottle with an inner diameter of less than 30 mm is called a narrow-neck bottle and is used to contain various liquid substances. Glass bottle is my country’s traditional beverage packaging container. Glass is also a very historical packaging material. With many types of packaging materials flooding into the market, glass containers still occupy an important position in beverage packaging, which is inseparable from its packaging characteristics that cannot be replaced by other packaging materials.

  1. Thick-necked glass bottles (large-mouth bottles)

Bottles and jars with an inner diameter of more than 30 mm are used to contain lumps, powders and pastes.

Basic requirements for glass bottles and jars

According to different uses, various glass bottles and jars have their corresponding technical regulations. Generally speaking, the following basic requirements should be met:

  1. In terms of glass quality, the glass should be melted well and evenly, and defects such as stones, streaks, and bubbles should be avoided as much as possible. Colorless glass should have high transparency, while colored glass should have stable color and be able to absorb light waves of a certain wavelength.
  2. Physical and chemical properties

2.1. Glass should have certain chemical stability (explanation: stable and stable; no change) and should not interact with the contents to affect its quality.

2.2. Glass bottles and jars should have certain thermal stability and minimum loss rate.

2.3. Glass bottles and jars should have certain mechanical strength to withstand vibration, impact, pressure, etc.

  1. In terms of forming quality, glass bottles and jars should be formed according to a certain capacity, weight and shape to withstand the internal pressure during sterilization and other heating or cooling processes and encountered during transportation and use. There should be defects such as distortion, uneven surface, cracks and incompleteness. The glass should be distributed evenly, and no parts that are too thin or too thick are allowed, especially the mouth should be smooth and flat to ensure sealing.
Classification of glass bottles and jars and their uses
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