Are Unlined Glue Can made from specific types of metal or plastic?

Unlined glue cans are typically made from specific types of metal or, less commonly, plastic. The choice of material depends on the intended use and the properties required for the storage of adhesives. Here are the common materials used:

Metal:
Tinplate:

Properties: Tinplate is steel coated with a thin layer of tin. It is commonly used because of its resistance to corrosion and ability to provide a good barrier against moisture and air.
Usage: Suitable for storing a wide range of adhesives, especially those that do not react with tin.
Aluminum:

Properties: Aluminum is lightweight, corrosion-resistant, and provides an excellent barrier against air and moisture.
Usage: Often used for adhesives that are sensitive to corrosion or require a non-reactive storage environment.
Steel:

Properties: Plain steel can be used for unlined cans, but it is more prone to corrosion compared to tinplate or aluminum.
Usage: Typically used for adhesives where corrosion is less of a concern or where the adhesive is consumed quickly.
Plastic:
High-Density Polyethylene (HDPE):

Properties: HDPE is resistant to many chemicals and solvents, making it suitable for various adhesives.
Usage: Used when a lightweight and durable container is needed. However, it may not provide as good a barrier as metal cans for certain adhesives.
Polypropylene (PP):

Properties: PP is known for its resistance to chemicals and fatigue, making it suitable for a variety of adhesives.
Usage: Similar to HDPE, it is used when a durable plastic option is required.
Considerations:
Chemical Compatibility: The choice of material depends on the chemical composition of the adhesive. Some adhesives can react with certain metals, so it is crucial to select a material that does not compromise the adhesive's quality.
Barrier Properties: Metal cans generally provide better barrier properties against air and moisture compared to plastic, which can be crucial for maintaining the adhesive's shelf life.
Cost and Environmental Impact: The choice between metal and plastic may also be influenced by cost considerations and environmental impact, including recyclability and ease of disposal.
Unlined glue cans made from these materials are chosen based on the specific requirements of the adhesive they will store, ensuring safety, durability, and effectiveness.