Although the alloy caps on perfume bottles are small, they serve monumental purposes. They are essential in protecting the fragrance’s contents to reflect the brand’s identity. Have you ever wondered how these alloy caps are manufactured?

You will be stunned to know there is a complete technical manufacturing process and thought process behind their design and creation.

After all they serve an operational and a marketing role.

This blog explains every aspect of manufacturing perfume bottle alloy cap, from selecting raw materials to creating intricate patterns.

Material Composition of Metal Caps

1.Brass Alloy

Brass is an alloy of copper and zinc. Many perfume bottle manufacturers use brass for the manufacture of perfume bottle caps. Several properties of brass make it highly appropriate for this purpose.

1.1 Aesthetics

Among alloy caps, brass caps are mainly used to give an antique touch to bottles. The brass’s dull gold appearance offers a vintage touch to perfume bottle packaging.

1.2 Corrosion Resistance

Brass is a non-iron metal, a copper alloy. Therefore, brass caps are resistant to rusting and corrosion.

1.3 Resistance to Moisture

Brass caps can withstand oxidation and, therefore, are resistant to moisture.

1.4 Malleability

Brass contains high levels of copper, which is malleable. Being malleable means that the alloy can be flattened into any desired shape. This makes brass an ideal metal alloy for manufacturing perfume bottle caps.

1.5 Durability

Brass is more durable to stress and crack than pure copper, making it more suitable for manufacturing perfume bottle caps.

2. Zinc Alloy

Zinc alloy, known as Zamac, combines zinc, aluminum, magnesium, and copper. Zinc alloy is among the most popular choices for manufacturing alloy caps for perfume bottles. The following properties make zinc alloy a favorable option for perfume bottle manufacturers:

2.1 The balance between Quality and Cost

Zinc alloy is not an expensive metal. Although the cost is low, it does not compromise the quality of the alloy caps. Zinc alloy produces high-quality perfume bottle caps with unique qualities and aesthetics.

2.2 Finishing

The low melting point of zinc alloy, 380 °C, makes it ideal for creating intricate patterns and designs. This gives the alloy caps a good finish.

2.3 Resistance to wear and tear

Zinc alloy is durable and can withstand wear and tear, so zinc alloy caps exhibit longevity. It is a good choice for perfume bottle caps because it can keep the components of the fragrance intact for a longer period of time.

2.4 Affordable

Zinc alloy is an affordable option for manufacturing alloy caps. Perfume bottle manufacturers need to mass-produce perfume caps. Therefore, they need a material that is easy on the pocket yet good in quality. Zinc alloy is one of those materials.

2.5 More Resistant to Corrosion

Zinc alloy caps undergo several treatments that increase their resistance to weathering and corrosion. These treatments include electroplating, painting, and polishing. Such treatments not only enhance the overall look of the zinc alloy caps but also make them more resistant to harmful impacts from the external environment.

3.Aluminum Alloy

Aluminum alloy is a good choice for perfume bottle cap manufacturers looking for sustainable manufacturing options. Let’s examine the key advantages of using aluminum alloy for perfume bottle cap manufacturing.

3.1 Light Weight

A fantastic physical property of aluminum alloy is its low density. Low density makes the metal light, so perfume bottle caps made of aluminum alloy are light in weight. This makes aluminum a favorable metal for perfume bottle cap manufacturing.

3.2 Aluminum Oxide Layer

Aluminum alloy can produce a natural aluminum oxide layer on top. This layer preserves the natural shine of the perfume bottle caps, maintaining their look and color for a longer period of time.

3.3 Recyclable and Reusable

Aluminum alloy caps are not toxic to the external environment. They are both recyclable and reusable. Therefore, they are a preferable material for the present eco-conscious consumers and brands.

3.4 Endless Creative Possibilities

A great advantage of aluminum alloy is that it is susceptible to various techniques, such as metal stamping, laser engraving, etc. These techniques help create aluminum alloy caps in various sizes and shapes.

This opens the door for endless creative opportunities for perfume bottle cap manufacturers. Many manufacturers use aluminum alloy as closures for their luxury perfume editions because of its versatility.

Manufacturing Process of Alloy Caps

The manufacturing of alloy caps follows the injection molding technique. Let’s have a look at the formation of various types of alloy caps:

Selection of Raw Materials and Preparations

The first step is selecting appropriate aluminum, zinc, or brass alloy grades. The selection of material depends upon the type of perfume caps you want to manufacture and their properties.

The quality of raw materials also affects the quality of the final product, which, in this case, is perfume bottle caps. After selecting metal alloy sheets, the next step is cutting them into suitable-sized plates.

1. Stamping and Forming

Stamping and forming metal alloy sheets involve the use of a stamping machine. The stamping machine stamps the shape of the perfume bottle caps on the metal alloy lids using a die.

2. Trimming and Shaping

The stamping process sometimes produces burrs on the sheet. The shaping process removes the burrs to give the caps a proper shape. They were later trimming cuts or trimming the caps’ shapes to provide them with smooth edges.

3. Heat Treatment

Heating is an optional step; It is done to improve the mechanical properties of the stamps.

4. Surface Treatment

Surface treatment is done using anodizing, plating, and polishing techniques. The primary purpose of these techniques is to improve the resistance of the alloy caps to external environmental factors such as moisture and heat. They also enhance the caps’ finishing and maintain their shine and appearance. This also removes any imperfections found in the caps.

  • For aluminum caps, anodizing increases their resistance and adds color to them.
  • Electroplating is done to resist tarnishing and add the properties of helpful metal. Electroplating adds an additional layer of expensive metals to alloy caps.
  • To add depth and character to the alloy caps anodizing technique is used. It gives a matte finish to them.

5. Quality Inspection

In this step, the quality inspection team checks whether the quality of the caps meets the standards. They check the shape and size of the caps and the surface quality of the caps, such as shine, finish, and color.

6. Assembly

The assembly process involves installing necessary caps, including inner cap linings. The lining improves the sealing of the perfume contents and keeps the fragrance intact for a longer period of time.

7. Packing

This step involves packing the manufactured lids that have passed the quality control tests. They are packed in cartons and sealed. Once adequately packed, they are ready for transportation.

Advantages of Alloy Caps

1. Provision of Value

Current marketing strategies revolve around value creation. Perfume bottle manufacturers can deliver this value to their consumers by creating customized and stylish perfume bottle alloy caps.

2. Aesthetically Pleasing

All three types of alloy caps are aesthetically pleasing. Brass alloy gives a near-to-gold experience. Aluminum alloy caps are a priority of luxury fragrance closures. Zinc alloy or Zamac caps are further classified into three categories. In each category, the metal alloy delivers different unique properties and finishing.

Color Customization Options

Customization is the key to bringing more sales and customers. Using the die-casting method, alloy caps can be customized into various colors. Die casting is the induction of die into non-iron metal alloys. This process is carried out under high temperatures and high pressure.

The primary reason for using high temperature and pressure is to introduce the die while the metal alloy remains molten. The process occurs while the metal is injected into the mold cavity.

1.Air Tight Seal

The priority of perfume manufacturers is to preserve the original fragrance of the perfume for a longer time. This can be done through proper sealing that keeps the contents airtight and protects them from adverse environmental factors.

Alloy caps provide proper sealing. Installing the inner lining and threads inside them provides additional protection to the fragrance.

2.Variety of Finishing Options

The usage of metal alloy caps provides perfume manufacturers with many finishing options. Polishing, anodizing, and electroplating techniques are used to give them a variety of finishes. Apart from these techniques the malleability of these metal alloys is another factor that gives the freedom to convert them into desirable shapes.


Although they involve an extensive multi-step manufacturing process, alloy caps are an affordable way of elevating the aesthetic appeal of perfume bottles. From a vintage touch to a similar crystal appearance, they reflect the brand identity and convert consumers into loyal customers. Luxury brands prefer using alloy caps. They employ huge design teams that create attractive and intricate designs for perfume bottle caps.