What Makes a Metal Can?

When you are searching for the right metal can, you may wonder what makes a metal can. This article will provide you with a short introduction to metal cans, their composition, classification, and application. If you have not heard of these containers before, you may be surprised at all the benefits they offer. Keep reading to learn more. We'll also discuss how to store these containers. Here are some benefits of using metal cans. If you want to purchase a metal can, read on for some of their many benefits.

Classification

To perform an inspection of the seams of metal cans, you must follow the manufacturer's guidelines. Typically, a seam micrometer should guide itself around the periphery of the can, noting common problem areas. In addition, you should note the length and thickness measurements at various points. You can obtain multiple measurements from the points of concern and the remaining portion of the can. You should note down any obvious or hidden defects.

Composition

The composition of metal cans varies depending on the materials it is made of. Aluminum and steel are the two most common materials used in can manufacturing, but other metals, such as tin, are also used. Tinplate is a form of coating on the metal that protects it from corrosion. Typical tinplate cans contain one or two percent tin. These cans are generally used for wrappings.

Application

The market for food and beverage cans is growing due to the popularity of convenience foods. Earlier, canned goods were packaged in plastic coated material, which was deemed to be harmful to the health. But with the development of the modern world, food and beverage cans are now packed in metal cans. The growing demand for these products is attributed to their nutritional value, attractive appearance, and taste. These factors contribute to the increased demand for convenience foods.

Storage

When packing food for long-term storage, metal cans are the best option. They can last up to 30 years and offer near zero oxygen transfer. However, the downside of using metal cans is that they cannot be reused. Metal cans must be specially manufactured for food storage and coated with food grade enamel to prevent corrosion. In addition, the cans themselves are costly, and you will need a can sealer to prevent rusting. A can sealer can cost up to $1000.

Microleak tests

Performing Microleak tests on metal cans requires a specific procedure. To begin the test, the can is placed in a vacuum chamber, with stress slowly varying. The can's double seams and cross-over areas are inspected for pinholes. A wire mesh protector should be placed inside the can before turning on the vacuum. If a leak is visible, a continuous stream of bubbles is a sign of a leak. However, a tiny leak could go undetected for several seconds, while a larger leak might not show up for a few minutes.

Bisphenol A (BPA)

Bisphenol A is a chemical used to make polycarbonate plastics and epoxy resins. This chemical is commonly found in many products including shatterproof windows, drinking glasses, and water bottles. Bisphenol A is also used to coat metal cans to increase shelf life and prevent contact between food and metal. It is even used to line baby bottles. Consumers should check the label before buying baby food bottles, as some of these contain BPA.

Cost

Metal can packaging is an increasingly popular way to package beverages, including beer, soda, and soft drinks. Their sturdy, flexible construction has allowed them to meet the changing needs of consumers while still maintaining their inherent value. Whether they are used for packaging a canned food or a fresh vegetable, the can has the ability to protect the product from oxygen, moisture, bacteria, and rodents. This makes them a sustainable option that can save money for the beverage manufacturer while still maintaining the highest quality.