8011 3105 Aluminum for Twist Off Cap
Aluminum is commonly used to produce twist-on caps, which are commonly found on bottles for beverages such as soda, beer and water, as well as a variety of food products. These covers are usually made of aluminum because it is lightweight, corrosion-resistant, and easily molded into the desired shape.
Twist-away bottle caps are manufactured using a deep-drawing process in which a flat aluminum disc is pressed into a mold to form the bottle cap shape. The cover is then coated or treated to provide additional corrosion protection and enhance its appearance.
Aluminum twist-off lids are preferred by the packaging industry for their ease of use, recyclability and ability to maintain the freshness of contents by providing an air-tight seal. Additionally, aluminum is a sustainable material as it can be recycled repeatedly without losing its properties, making it an environmentally friendly choice for packaging applications.
Also known as lug caps, twist-off caps have a unique threading system that requires only a partial rotation to open or close. Haomei Aluminum offers lug cover aluminum plates in a variety of colors, sizes and styles to meet a variety of needs.
Twist/lug closures are the most popular metal closures for food and beverages. It provides the best oxygen barrier technology for extended shelf life. Twist/Lug Closure Caps are suitable for hot and cold filling and are compatible with pasteurization or sterilization processes.
Speicification of aluminum sheet for twist off caps
| Alloy | 8011, 3105 |
| Temper | H14, H16, H24, H26 |
| Thickness | 0.15~0.25 mm(+/-0.005mm) |
| Width | 500~1000 mm(+0.5mm, -0mm) |
| Length | 500~1000 mm(+0.5mm, -0mm) |
| Coil | 500~1000 mm |
| Strip | 20~500 mm |
| Earing | 1 |
| Diagonal | ≤ 1mm |
Typically made from once-annealed 8011 cast-rolled aluminum. In order to maintain good sealing quality, the inner surface of the screw cap is coated with 8011 aluminum plate with varnish to maintain the perfect combination of the omina cap and the internal plastic pad.
Aluminum for Twist Off Cap surface type
- Plain milled aluminum plate for unscrewing bottle caps
- One side is gold/white/red/blue/black, etc., and the other side is protective paint
- Varnish/clearcoat on both sides
Aluminum for Twist Off Cap manufacturing process
The manufacture of aluminum screw caps involves multiple complex processes, each contributing to the final quality and performance of the product. The main method of producing these caps is called deep drawing.
- 1. An aluminum blank in the form of a disc or sheet is fed into a press equipped with a die and punch assembly.
- 2. The press exerts huge pressure on the aluminum blank, forcing it to conform to the shape of the mold, thereby forming the desired bottle cap profile.
- 3. Trim the cover to remove excess material and achieve precise dimensions.
- 4. Line the cap with a suitable sealing material (such as plastisol or Saranex) to ensure an airtight seal and prevent 5. leakage or contamination of the packaged product.
- 5. Bottle caps undergo surface treatments such as coating or printing to enhance aesthetics, provide brand information and promote consumer engagement.
Aluminum for Twist Off Cap Applications
Aluminum screw caps are widely used in various industries due to their versatility, reliability and consumer appeal. In the food and beverage sector, these caps are commonly used to seal bottles containing carbonated drinks, juices, sauces, condiments and cooking oils.
The air-tightness provided by aluminum lids helps preserve the freshness and flavor of contents, thereby increasing consumer satisfaction and brand loyalty. Additionally, aluminum caps are widely used in the pharmaceutical industry to seal vials, containers, and bottles containing pharmaceuticals, syrups, and liquid preparations.
The tamper-resistant feature of the screw cap ensures the integrity of the pharmaceutical product and prevents unauthorized access or tampering. Additionally, aluminum screw caps are used in the cosmetics and personal care industry to seal bottles of perfumes, lotions, creams and other beauty products.
Aluminum Twist Off Cap application cases
Aluminum Twist Off Cap for beverage industry
- a. Carbonated soft drinks: Aluminum screw caps are often used to seal bottles containing carbonated drinks such as cola, sparkling water and sparkling water. The airtight seal provided by these lids preserves the bubbles and flavor of your drink.
- b. Juice: Juice bottles, including orange juice, apple juice and grape juice, are usually sealed with aluminum twist-off caps to maintain freshness and prevent spoilage.
Aluminum Twist Off Cap for pharmaceutical industry
- a. Liquid medications: Aluminum screw caps are used to seal bottles and vials containing liquid medications such as cough syrups, antacids, and oral suspensions. Tamper-proof features ensure the integrity and security of medicines.
- b. Oral care products: Bottles of mouthwash and oral rinses are sealed with aluminum twist-off caps, providing a secure closure to prevent leakage and contamination.
Aluminum Twist Off Cap for food industry
- a. Sauces and condiments: Aluminum screw caps are used to seal bottles of sauces, condiments and condiments, including ketchup, mayonnaise, mustard and salad dressings. Airtight seal ensures flavor and quality are preserved.
- b. Edible oil: Bottles of edible oils such as olive oil, vegetable oil and sunflower oil are sealed with aluminum twist-on caps to prevent oxidation and maintain freshness.
Aluminum Twist Off Cap for cosmetics
- a. Perfumes and Fragrances: Aluminum screw caps add a touch of sophistication to perfume and fragrance bottles, enhancing their beauty and providing a secure closure.
- b. Lotions and Creams: Bottles of body lotions, moisturizers and creams often come with aluminum twist-off caps, providing a convenient and hygienic dispensing mechanism.
