3003 Aluminum Foil for Food Container

 3003 aluminum foil belongs to the aluminum-manganese alloy, Its strength is higher than that of 1 series aluminum foil, and is about 10% higher than 1100 aluminum foil and 1060 aluminum foil. 3003 aluminum foil is generally used in aluminum foil food container, food packaging, aluminum honeycomb cores, etc., and is deeply favored by the market.

The physical properties of food-grade aluminum foil include thickness, strength, elongation and surface smoothness. The chemical composition of food-grade aluminum foil is also one of the important contents of inspection. The food contact safety of food-grade aluminum foil is also a key part of inspection. 3003 aluminum foil make different types of food containers.

Baking aluminum foil boxes: They are mainly small-capacity boxes, basically less than 300ML. The most widely used is the 50ml baking aluminum foil box, which can be used for sauces, bowls, baked goods, desserts, puddings and other foods. Among them, there are also jam aluminum foil boxes of about 15-25g, which are also widely used.

Round food container: The large-capacity round aluminum foil container is mainly suitable for holding staple food, stew soup, and used as dry pot, hot pot, etc., such as whole chicken, whole duck, large portions of lobster, boiled fish, hot pot stew, Medium-capacity round aluminum foil container is suitable for holding fast food, fruits, soups, etc. Because the portion is suitable, it is similar to the portion required for a family's daily diet, and the overall demand is relatively high; then small-sized round aluminum foil boxes are more suitable for holding some small bowls of dishes.

Square aluminum foil container: It is mainly suitable for takeout packaging. Ordinary square aluminum foil boxes are suitable for holding fast food, fruits, rice, prepared dishes, etc.; the weight is similar to that required for daily meals at home, and it is an aluminum foil box with high demand. The large-capacity square aluminum foil box is mainly used for grilled fish trays. It is very suitable for takeout packaging of grilled fish.

Compared with ordinary packaging boxes, the outstanding advantage of aluminum foil container is that it maintains the taste of meals as freshly out of the pot to the greatest extent. The richness of the styles of aluminum foil containers determines the breadth of its application scenarios. The powerful functions and aesthetic appearance can also enrich our food life and improve the quality of catering services. Haomei Aluminum has rich aluminum foil types. Welcome to leave messae below to inquire what you need. 

What Is Used For Making Aluminum Seal Cap

 Aluminum seal caps come in a variety of styles and widths. It offers stability and stiffness compared to other materials. Aluminum caps and closures are frequently used in the food and beverage industry. The aluminum lid has a sturdy construction and is easy to open.

Aluminum caps and closures are made to suit the dimensions of bottles, containers and jar mouths. The aluminum bottle cap material is aluminum alloy sheet like plain or color printed aluminum sheet. Aluminum covers of different specifications need to be produced with aluminum alloy plates of different specifications.

Advantages of aluminum bottle caps

1. The aluminum cap is hygienic, will not rust, and is easy to open without the need for auxiliary tools. After opening, the bottle cap is destructive and can effectively prevent theft.

2. The aluminum cap has the advantages of good cushioning, shock resistance, heat insulation, moisture resistance, chemical corrosion resistance, etc. It is non-toxic, non-absorbent, does not cause dust or peeling, and has very good sealing performance.

3. The aluminum cap is resistant to high temperatures, boiling, alcohol, etc. The pattern design can use color printing, embossed characters, and milled characters.

4. The aluminum cap has excellent sealing properties and a larger flat surface on the cap surface, making printing of various text logos more beautiful.

Two types of aluminum bottle caps

PP caps: It refers to pilfer proof caps that are made of printed aluminum plates and liners and are sealed with a threaded bottle mouth and cannot be restored after opening and use. It is commonly used for sealing wine, soft drinks, health products, condiments, etc.

ROPP caps: It is short for Roll-on Pilfer Proof. When the closure is installed on the bottle, the threads are formed by applying a pressure roller to the closure. ROPP caps are in great demand in the beverage and food industries and are widely used in alcohol, medical, pharmaceutical, beverage, food, agrochemicals, edible oils, lubricants,etc.

Food- grade paint

Haomei Aluminum offers plain, coated and printed aluminum foil sheet for making various bottle caps. The coating and paint is of food grade. Food-grade paint is an environmentally friendly and safe paint product that is widely used in food, catering, medical, children's products and other fields that require contact with food or have high human safety requirements.

First of all, food-grade environmentally friendly paints strictly follow relevant laws, regulations and standards in terms of ingredients. They usually use harmless, low-volatile organic solvents and do not contain harmful substances such as formaldehyde, heavy metals, benzene, etc. It has passed a number of quality and safety certifications, such as European REACH regulations, US FDA certification, Chinese GB 4806.1 standards, etc., ensuring its safety for human health.

Secondly, food-grade paint causes less environmental pollution during the construction process. Due to its use of low-volatility solvents, it can reduce the emission of harmful gases, reduce the risk of air pollution, cause less pollution to the construction site and the surrounding environment, and is conducive to the protection of indoor air quality.

In addition, food-grade paint has good durability and adhesion to the painted items after use. It can effectively protect the surface of the coated items, prevent damage caused by moisture, stains, etc., and extend its service life.

It also performs well in terms of painting effects, providing a wide range of color choices and gloss to meet different painting needs. The white painted aluminium sheet is a popular choice. At the same time, it also has good water resistance, oil resistance, wear resistance and other properties, allowing the painted items to maintain a good appearance during long-term use.

Finally, food-grade paints are widely used in food, catering and other food-contact fields. For example, in food packaging, food processing equipment, restaurant kitchens, food display cabinets and other occasions, the use of food-grade paint can ensure that painted items will not contaminate food and ensure food safety.

Original Source: https://www.alclosuresheet.com/a/what-is-used-for-making-aluminum-seal-cap.html

What Are The Corrosion Resistance of Aluminum Alloy Grades

Aluminum corrosion is the gradual decay of aluminum molecules into their oxides, thereby reducing their physical and chemical properties. Aluminum is essentially a reactive metal, but it is also a passive metal. This means that while the nascent aluminum reacts with oxygen and water in the environment, the resulting compounds form a layer on the surface that protects the underlying material from further corrosion.

This non-reactive oxide layer adheres well to the surface and resists peeling, similar to stainless steel. Unlike deliberate processes such as laser etching, aluminum anodizing or brightening, corrosion is a slow process that can take place over months or years. Aluminum is unique in that there are many different types of corrosion pathways. Understanding these different corrosion phenomena is the basis for implementing control measures to reduce or completely prevent their occurrence.

The corrosion of aluminum and aluminum alloys mainly includes pitting corrosion, intergranular corrosion, stress corrosion cracking, lamellar corrosion, etc. The 6000 series alloy is the most popular among deformed aluminum alloys. Although its corrosion resistance is not as good as that of the 1000 series, 3000 series, and 5000 series aluminum alloys, it is much higher than that of the 2000 series and 7000 series aluminum alloys. 5000 series aluminum are the well known marine aluminum alloys.

The 6000 series alloy also has a relatively large intergranular tendency. The 6000 series aluminum alloy materials like 6082t6 grade aluminium used in important structures should be evaluated for intergranular corrosion sensitivity.

Judging from the corrosion morphology, the corrosion of aluminum can be divided into comprehensive corrosion and local corrosion. The former is also called uniform corrosion or overall corrosion, which refers to the uniform corrosion and loss of the material surface in contact with the environment. The corrosion of aluminum in alkaline solution is a typical uniform corrosion, such as alkali cleaning. The corrosion result is that the aluminum surface becomes thinner at approximately the same rate and the weight is reduced.

Localized corrosion means that the occurrence of corrosion is limited to specific areas or parts of the structure, and can be divided into the following categories:

Pitting corrosion occurs in very localized areas or parts of the metal surface, causing holes or pits that expand inward and even cause perforations. Aluminum in chloride-containing aqueous solutions is a typical pitting corrosion. In the corrosion of aluminum, pitting corrosion is common and is caused by the potential of a certain area of aluminum being different from the potential of the matrix, or by the presence of impurities with potentials that are different from the potential of the aluminum matrix.

This kind of corrosion is a selective corrosion that occurs at the grain boundaries of metals or alloys when the grains or crystals themselves are not significantly eroded. It will drastically reduce the mechanical properties of the material, causing structural damage or accidents.

The reason for intergranular corrosion is that the grain boundaries are very active under certain conditions. For example, there are impurities at the grain boundaries, or an alloy element increases or decreases at the grain boundaries. This means that there must be a thin region on the grain boundary that is electronegative to the rest of the aluminum, which corrodes preferentially. This kind of corrosion can occur in high-purity aluminum in hydrochloric acid and high-temperature water. AICu, AI-Mg-Si, Al-Mg, and Al-Zn-Mg alloys are all sensitive to intergranular corrosion.

Haomei Alumium provides rich marine aluminum alloys like 5083, 5052, 5086, 5059, 6061, 6082,etc. All are with classification society certification like DNV,LR, ABS,etc. Welcome to leave message below to inquire 5083 aluminium specification.

Original Source:https://www.marinealu.com/a/what-are-the-corrosion-resistance-of-aluminum-alloy-grades.html

Aluminium Foil for Medicine Packaging

 Metal packaging material refers to a material that is rolled into thin sheets after special treatment and used for product packaging. It is also known as the "four major packaging materials" along with glass, plastic, and paper. It is one of the commonly used packaging materials for pharmaceuticals. Tin-plated iron sheets appeared in Czechoslovakia as early as 1200 AD; British tinplate technology was born in Britain in 1810; aluminum plates and aluminum foil for medicine packaging appeared in the early 20th century.

Metal packaging materials mainly include low carbon steel sheets, tinned steel sheets, non-tinned steel sheets, aluminum foil and aluminum alloy sheets. However, due to the particularity and strict requirements of pharmaceuticals, low carbon thin steel sheets and non-tinned steel sheets are used in food, beverage and industrial fields, but has few applications in the medical field. There are two main types of commonly used medicinal metal packaging materials:

1. Tin-plated steel plate: It is often used for packaging of sprays and aerosols;

2. Aluminum products( medicine aluminum foil and aluminum tubes): It is widely used in the packaging of tablets, capsules, granules, creams, ointments, gels and other solid or semi-solid preparations; aluminum products can also be combined with aluminum-plastic combination cover and the glass container.

Tablet bottles are used to package solid drugs such as tablets and capsules. These drugs are easily affected by moisture and may become ineffective or even deteriorate when exposed to water vapor. How to ensure the stability of the drugs within the validity period and avoid being affected by external moisture and deterioration? Its packaging can meet this demand very well.

Tablet bottles are generally made of plastic materials processed through various processes. First of all, these plastic products have good barrier functions against external water vapor, impurities, etc., and are good materials for pharmaceutical packaging, especially tablet drugs that are afraid of moisture.

Secondly, the caps of tablet bottles are generally sealed with pharma lidding foil. Aluminum foil is a hot stamping material that is directly rolled into thin sheets of metallic aluminum. Adding an aluminum foil sealing gasket between the body and cap of the medicine bottle can ensure the sealing of bottles.

The gasket of this sealing method is composed of adhesive sealing layer, aluminum foil, weak adhesive layer, cardboard elastomer, etc. The aluminum foil gasket is embedded in the bottle cap to expose the aluminum foil, and then applied to the bottle body to tighten the bottle mouth, using electromagnetic induction.

Medicinal sealing aluminum foil gaskets are mainly used inside various types of medical bottle caps. Its main function is to block direct contact between the bottle mouth and the inside of the bottle cap, thereby preventing contact between the inside of the bottle cap and the outside air. It can keep the quality of medicines unchanged for a long time. The aluminum foil 1100 is chosen.

Original site: https://www.alumhm.com/a/aluminium-foil-for-medicine-packaging.html

How Is Aluminum Sheet Cut to Size

This is our aluminum sheet production line.  The process includes cleaning, uncoiling and cutting to size.

Haomei Aluminum can provide 1-8 series aluminum sheets for various applications. Welcome to send inquiry directly to dolly@alumhm.com or learn more at our website: https://www.alumhm.com/aluminum-sheetplate/

Aluminum Foil for Induction Sealing

 In the packaging industry, the production process is determined by the product dosage form, but the packaging link occupies a large proportion. Packaging plays an extremely important role in product quality assurance, and there are many types of materials used in packaging.

Among them, due to its good mechanical properties, barrier properties, safety properties, and its superior processing properties, aluminum foil for induction sealing has good sealing properties, excellent freshness retention and light shielding properties, which can prevent oxidative deterioration of products.

Its sealing can ensure a tight, smooth and easy-to-tear effect. It can also improve the advertising effect and product value through printing technology. Therefore it is widely used in the packaging industry.

The technical principle of aluminum foil sealing is to heat the aluminum foil sealing gasket through electromagnetic waves, so that the heat sealing layer of the aluminum foil sealing gasket is heated and melted, and the heat sealing layer is bonded to the bottle mouth under certain pressure conditions, thereby achieving a rapid non-contact air seal.

Aluminum foil's compatibility with heat-seal paint, coupled with the metal's excellent thermal conductivity and stability, make it an ideal material for capping and heat-sealing a variety of plastic milk containers. Whether the milk is fresh, aseptically filled or sterilized in containers, foil/coating combinations can be designed to meet processing and distribution needs.

The heat sealing aluminum foil alloys are usually 8011 aluminum foil and 8079 aluminum foil. The 8 series heat sealing foil has fewer holes, good barrier and heat sealing properties, and the product is clean of oil and has a clean surface. The aluminum foils reach ood grade, which can be steamed at high temperatures, and is hygienic.

The aluminum foil is the carrier of the adhesive layer, and its quality has a great influence on the heat sealing strength of the product. Especially the oil on the surface of the original aluminum foil will weaken the bonding force between the adhesive and the original aluminum foil. If there is oil on the surface of the original aluminum foil and the surface tension is lower than 31×10-3μm, it will be difficult to achieve the ideal heat sealing strength, so the quality of the aluminum foil must be strictly controlled.

Original Source: https://alclosuresheet.com/a/aluminum-foil-for-induction-sealing.html

Why Is Prepainted Aluminum Used for Bottle Cap

 Bottle caps are essential for sealing all kinds of containers. Food and drinks are therefore optimally protected throughout their shelf life. One of the main bottle cap materials is the prepainted aluminum.

The painted aluminum sheet refers to an aluminum coil that is processed into aluminum sheets, then surface processed and coated with one or several layers of organic coatings such as polyester, fluorocarbon polyester, and then baked and solidified.

After the aluminum coil is coated, the paint covers its surface to form a firmly adherent continuous coating with corrosion resistance, which isolates the aluminum coil base from the corrosive medium, thereby preventing or slowing down damage caused by corrosion.

By using the diversity of paint colors and painting techniques, aluminum sheet can be painted to obtain decorative coatings of different colors, glosses, etc., making their appearance bright and dazzling, or rich in tone, which gives people a pleasing feeling, thereby increasing the added value of the product and expanding the application scope of the aluminum sheet.

Since the middle of the last century, the roller coating has been the main method. The production of color-coated aluminum coils is carried out by a precision coating machine evenly coating the surface of the pre-treated aluminum coils with the same thickness, entering the oven with an exhaust device at a constant speed, and using infrared or hot air circulation baking processes to bake and solidify.

Roller coating uses the coating roller as the carrier of the paint. The paint forms a wet film of a certain thickness on the surface of the coating roller. The coating roller contacts the object to be coated during rotation, and the paint is applied to the surface of the object to be coated.

Roller coating is suitable for coating flat metal plates, especially for high-speed coating of metal coils. Roller coating has the characteristics of fast coating speed, high production efficiency, and 100% paint utilization rate.

As one of the big painted aluminum sheet metal suppliers, the coating Haomei Aluminum chooses is of food grade and doesn’t contain BPA. It also has good adhesion and can withstand the test of high-temperature cooking. Welcome to leave message below to inquire what you need.

Original Source: https://www.alclosuresheet.com/a/why-is-prepainted-aluminum-used-for-bottle-cap.html