Production methods of glass bottles Quality standards for glass

Production methods of glass bottles Quality standards for glass bottles and cans
There are many kinds of glass, which can meet different needs of different occasions. By adjusting the material and process of manufacturing glass, manufacturers can make greater changes in the properties of the glass material, making it more stable and durable. For example, the commonly used tempered glass is not only stronger than ordinary glass, but the fragments will not hurt people and are safe and reliable. This article will introduce the production methods of glass bottles and the quality labeling of glass bottles and cans to deepen everyone’s understanding.

First, the production method of glass bottles

The glass bottle production process mainly includes:

①Pre-processing of raw materials. Crush the bulk raw materials (quartz sand, soda ash, limestone, feldspar, etc.) to dry the wet raw materials, and remove iron from the iron-containing raw materials to ensure the quality of the glass.

② Preparation of batch materials.

③Melting. The glass batch material is heated at high temperature (1550~1600 degrees) in a pool furnace or a pool furnace to form a uniform, bubble-free liquid glass that meets the molding requirements.

④Forming. Put the liquid glass into the mold to make glass products of the required shape, such as flat plates, various utensils, etc.

⑤ Heat treatment. Through annealing, quenching and other processes, the internal stress, phase separation or crystallization of the glass is cleaned or generated, and the structural state of the glass is changed.

2. Quality Standards for Glass Bottles and Jars

Quality requirements Glass bottles and cans should have certain performance and meet certain quality standards.

①Glass quality: pure and uniform, without defects such as sand, streaks, and bubbles. Colorless glass has high transparency; the color of colored glass is uniform and stable, and can absorb light energy of a certain wavelength.

②Physical and chemical properties: It has certain chemical stability and does not interact with the contents. It has a certain degree of shock resistance and mechanical strength, can withstand heating and cooling processes such as washing and sterilization, and withstand filling, storage and transportation, and can remain undamaged when encountering general internal and external stress, vibration, and impact.

③Forming quality: maintain a certain capacity, weight and shape, uniform wall thickness, smooth and flat mouth to ensure convenient filling and good sealing. There are no shortcomings such as distortion, uneven surface, unevenness and cracks.