How is aluminum foil used in bottles?

Aluminum foil is a thin film material made of pure aluminum, which has the advantages of light weight, corrosion resistance and good heat insulation. In the water bottle industry, aluminum foil is mainly used as a heat-insulating layer applied to the inner liner wrapping to improve the thermal insulation performance of the product, effectively protect the bottles, and prolong the service life of the thermal bottles.

I. Why can aluminum foil keep warm?

Aluminum foil is a material with excellent thermal insulation performance. The principle of heat preservation mainly originates from the following aspects:

1. Heat reflection

Aluminum foil has high thermal reflectivity. When heat comes from outside, aluminum foil can reflect this part of heat, preventing it from further transmission. This reflection helps to keep the temperature of the surface of the object stable.

2. Thermal insulation

Aluminum foil, as a good heat insulation material, can effectively cut off the transmission of heat. In terms of thermal insulation, aluminum foil can slow down the flow of heat between the inside and outside of the object, thus keeping the temperature inside the object from being affected by the outside environment.

3. Radiant heat control

Aluminum foil has a good effect on the infrared radiation heat control. When aluminum foil is used as an insulating layer for equipment, it effectively prevents heat radiation from escaping from the surface, thus keeping the interior warm.

These characteristics make aluminum foil widely used in many fields, including building insulation, packaging, and cooking. In cold weather or environments, the use of aluminum foil is effective in maintaining temperature and reducing heat loss.

II. What are the steps of wrapping aluminum foil?

1. Wrapping aluminum foil: Lay the cut aluminum foil flat on the working table, roll up one end of the aluminum foil and put the inner liner from the neck to the aluminum foil for rolling and wrapping, the aluminum foil is tightly attached to the inner liner wall without any looseness or detachment.

2. Welding aluminum foil: Put the inner liner wrapped with aluminum foil on the copper plate, slide the copper rod gently from the bottom of the inner liner with the left palm holding the inner liner mouth and the right palm holding the copper rod, and gently stroke the aluminum foil with the copper rod to make it fuse together. The aluminum foil welding should be firm, without any damage or detachment.

At the same time, in the aluminum foil wrapping process of bottles, it is necessary to consider the specifications and thickness of aluminum foil, bonding method, welding method and other details to ensure the quality and productivity of aluminum foil wrapping.

In conclusion, aluminum foil, as a material with the advantages of lightweight, corrosion resistance, good heat insulation and so on, has a wide range of application value in the water bottle industry. Its excellent thermal insulation performance can effectively reflect the heat back to the interior, thus playing the role of thermal insulation. Using aluminum foil as the insulation layer of the inner liner can effectively prevent heat loss and improve the heat preservation effect. With the continuous development and innovation of technology, the application of aluminum foil in the water bottle industry will become more and more extensive and in-depth, bringing consumers better product quality and experience.