What’s the Difference Between Food Can Bottom Ends Types?

As an indispensable key component in metal can packaging, the bottom of a food can directly affects the safety, freshness, and user experience of canned food and beverages. Different types of food can bottom ends have different design features and application scenarios. Understanding their differences is crucial to choosing the right packaging solution. This article will provide a detailed analysis of the differences in the types of food can bottoms, and combined with the professional experience of Worunda Metal Packaging, it will help you better understand the advantages and applications of mainstream products in the market.

1. Basic classification and function of food can bottoms

The bottom of a food can usually refer to the bottom closed part of the can body to ensure that the contents of the can do not leak or be contaminated. Depending on the design and use, the bottom types can be roughly divided into the following categories:

Plain End

The appearance is flat, and the structure is simple. It is suitable for foods that do not require particularly high sealing strength, such as dry goods and canned vegetables. The flat bottom design has a low production cost and good compatibility, but the pressure resistance is average.

Dome Bottom

The slightly concave design in the middle is used to withstand internal pressure. It is commonly seen in food cans that have been sterilized or vacuum-packed. The concave bottom can enhance the stability of the can body and prevent the can body from deforming.

Easy-Open End

Equipped with a pull ring or tear-off structure, it is convenient for consumers to open. It is suitable for food or beverage products that need to be opened conveniently, such as instant condiments and beverage cans.

Special Function Bottom

Such as Peel-Off End, reinforced bottom, etc., to meet specific food safety and transportation requirements.

Different bottom designs meet the packaging requirements of different products, from sealing, pressure resistance, to opening convenience, which constitutes the basis for canned food quality assurance.

2. The influence of materials and coatings on bottom performance

The manufacturing materials of the bottom of food cans are mainly tinplate, tin-free steel (TFS), and aluminum. Different materials affect the corrosion resistance, weight, and cost of the product.

Tinplate has good corrosion resistance and is widely used at the bottom of food cans, especially for foods that need to be stored and transported for a long time.

TFS has a low cost and is suitable for short-term packaging, but its corrosion resistance is relatively weak.

Aluminum is light and not easy to rust. It is often used at the bottom of beverage cans and easy-to-open cans to enhance the consumer experience.

In terms of coating, Worunda Metal Packaging uses a variety of internal and external coating combinations (such as gold/gold, white/gold, transparent/gold, etc.) to ensure food safety, prevent direct contact between metal and contents, prevent corrosion and pollution, and comply with international food safety standards (including BPA-Free design).

3. Scope of application of different specifications of the bottom

The cans of food and beverages have various sizes, and the specifications and sizes of the bottom must also be accurately matched to ensure sealing and structural stability. Worunda Metal Packaging offers a variety of bottoms, including but not limited to:

50mm beverage can bottom (TFS material)

73mm fruit can bottom

99mm ketchup can bottom

153mm ketchup can bottom

These specifications cover the diversified market needs from beverages to concentrated foods, from small packages to large volumes, and meet the customized requirements of different customers.

4. The relationship between bottom design and food safety and pressure resistance

The bottom of a food can must not only ensure sealing performance, but also withstand the internal pressure and transportation vibration during the filling process. Taking the 153mm ketchup can bottom as an example, its concave bottom design can effectively disperse the internal pressure, prevent the can body from deforming, and ensure food preservation and can body stability.

At the same time, the bottom of beverage cans usually uses lightweight aluminum and specific coatings to ensure pressure resistance, reduce weight, and improve transportation efficiency. Worunda Metal Packaging’s products have been strictly tested and meet relevant industry standards to ensure that each bottom can withstand high-temperature sterilization, vibration, and extrusion.

5. Product advantages of Worunda Metal Packaging

As a professional food can bottom and beverage can bottom manufacturer and supplier, Worunda Metal Packaging has the following advantages:

Rich specifications and models to meet various applications such as ketchup cans, fruit and vegetable cans, beverage cans, etc.

Diverse coating options to ensure food safety and meet international food contact material standards.

High-standard production process to ensure the sealing and pressure resistance of the bottom.

Free customization service to support customer brand printing to meet personalized needs.

Food safety certification allows customers to purchase with peace of mind and high product reliability.

Our bottom products are designed and optimized to have both structural strength and easy opening. Helping customers improve the quality and market competitiveness of canned products.

6. Summary

There are many types of food can bottoms, from structural design, material selection, to specifications and sizes, every link affects the safety and use experience of canned products. Choosing the right food can bottom ends and beverage can bottom ends not only ensures the sealing and pressure resistance of the can body, but also improves the convenience and satisfaction of consumers.

If you need high-quality, multi-specification горна и долна част на кутии за храни и напитки products, please contact us. Worunda Metal Packaging will provide you with professional customized services to help your products win market favor.