Introduction Tinplate is a material widely used in the manufacture of metal containers, due to its properties of strength, malleability and protection against corrosion. One of the key aspects in the production of tinplate packaging is the application of varnishes,...
Introduction Demand for aluminum beverage cans has experienced significant growth in recent years, driven by factors such as the proliferation of new beverages, preference for sustainable packaging and ease of transportation for the end consumer. The manufacture of...
The defect of aluminum cans called “short can” is related to the loss of continuity of the material when the aluminum is stretched between tools, which successively reduce the diameter of the can and are called “flattening”. The can wall...
The yield strength of steel is the point at which a material stops behaving elastically and begins to deform plastically. In other words, it is the maximum amount of stress that can be applied to a material without permanent deformation. When a material is subjected...
Tinplate is a thin steel material that has been coated with a layer of tin to protect it from corrosion and oxidation. Some of the technical characteristics of tinplate are as follows: Thickness: Tinplate thickness varies according to the type of application and can...
The quality of the water used in container sterilization is very important to ensure the safety and quality of the packaged product. In general, the water used in container sterilization should be soft, i.e. have a low concentration of salts and low electrical...
Electrostatic powder in the packaging industry to protect and decorate metal surfaces of containers of different sizes and shapes. The electrostatic powder application process in containers is performed by a system that absorbs the powder from a fresh powder tank and...
WIMA welding is a resistance welding technique used in the manufacture of metal packaging. This technique was developed by Soudronic in 1975 and is used to weld the side seam of three-piece containers. The WIMA welding technique uses a drawn and flattened copper wire...
BPA is the abbreviation for Bisphenol A, a chemical compound used in the manufacture of plastics and resins. BPA has been used in the production of a wide variety of consumer products, such as plastic bottles, food and beverage containers, CDs and DVDs, medical...
BADGE is the abbreviation for Bisphenol A diglycidyl ether, which is a chemical compound used in the production of epoxy resins. These resins are used in a wide variety of products, such as food and beverage coatings, food can coatings, adhesives, sealants, and many...
An epoxyphenolic varnish is a type of coating used to protect and decorate metal surfaces. It is composed of a mixture of epoxy and phenolic resins that are bonded together to form a tough and durable protective coating. The phenolic resin provides the chemical...
The dimensions of SEFEL closures are very important to ensure the quality and safety of light metal packaging. The following are the dimensions of SEFEL fasteners according to the different types of fasteners: Type OIII: Body hook length (mm) 1.70; Cover hook length...
The lid trough is the concave part of the lid that fits over the rim of the container and whose main function is to seal the contents of the container. The lid tray is a fundamental part of the hermetic seal of the containers, as its design and depth directly affect...
There are different rules and regulations that apply to tinplate packaging in different parts of the world. Some of the most important are: ISO 9001: This standard establishes the requirements for a quality management system in an organization and is applicable to all...
The radial strength of a container is its ability to withstand external loads without permanent deformation of its shape. In other words, it is the amount of pressure in bar that a container can withstand without paneling or imploding, which means that the container...
The axial resistance of a container is its capacity to support vertical loads without suffering permanent deformations in its height. In other words, it is the minimum amount of weight that a container can support without sinking. The axial resistance is evaluated...
TFS (an acronym for Tin Free Steel) and tinplate are similar materials used in the manufacture of metal packaging. However, there are some important differences between them. First, the tinplate is coated with a tin layer by electro deposition and a passivation film,...
double seam with short hooks can present several risks in the can sealing process. Some of these risks are: Leaks: Short hooks may not seal the can properly, which can lead to liquid or gas leaks. Oxidation: If the short hooks do not properly seal the can, the...
Introduction Twist-off closures are a popular type of closure used in the packaging industry, especially for food and beverage products. Despite their convenience and ease of use, twist-off caps can have defects that affect their functionality and aesthetics. This...
The life of a double locking tool, either with or without titanium coating, may vary depending on several factors, such as tooling material, manufacturing quality, maintenance and conditions of use. Here is a detailed description of the difference between double...
Introduction The autoclaving process is essential in the canning industry to ensure proper sterilization and preservation of canned products. However, sometimes cans can collapse out of the autoclave, affecting the quality and safety of the product. This white paper...
There are several defects that can occur during the tinplate coating process. The following are some of the most common defects: Lack of adhesion: This defect occurs when the varnish does not adhere properly to the surface of the tinplate. It can be caused by poor...
The formula for calculating the overlap at the closure of a can is as follows: Overlap = LGc + LGf + 1.1 Gf – Lc Where: LGc: Length of body hook LGf: Length of bottom hook or cap Gf: Thickness of bottom or cover material Lc: Length of closure This formula allows...
To disassemble and analyze the double sealing of a can, you can follow these steps: Cutting and removing the center bottom panel: Use a can opener or similar tool to cut and remove the center panel from the bottom of the can. Cutting two opposite sections of the...
In industrial environments, fish cans are cooled with chlorinated water. What is achieved with this procedure? The use of chlorinated water in the cooling of fish cans in industrial environments serves several important purposes. The following are the main objectives...
Introduction Epoxy varnish is an essential component in the manufacture of food and beverage cans. Its main function is to protect the contents of the package and guarantee the quality of the packaged product. In this technical article, the characteristics,...
Introduction BPANI varnish is an innovative coating used in the food and beverage metal packaging industry. This technical article will provide detailed information on BPANI varnish, its properties, applications and benefits in the protection and preservation of...
Introduction Varnish is an essential component in the metal packaging industry, providing protection and decoration to containers. Among the different types of varnishes available on the market, BPANI (Bisphenol A Non-Intent) and Epoxy varnishes are two of the most...
Introduction Welding is an essential process in the manufacture of metal cans, since it allows joining the parts and ensuring the integrity of the container. One of the most common defects in can welding is fishtailing, which can cause problems in the subsequent...
Tool room is a dedicated space in a company or workshop where tools and equipment used in the production or manufacture of products are stored, maintained and repaired. These tool rooms can be part of factories, machine shops or machine manufacturing companies, such...
The main causes of can breaks in the formation can be varied and can be divided into two categories: isolated causes and common causes in the process.Isolated causes: Problems in a cup press. Problems in a cup press cavity. Problems in a body former.Common causes in...
Introduction The process of decorating aluminum cans is essential to offer an attractive and quality product to consumers. However, sometimes defects may arise in the decoration process, affecting the quality and appearance of the final product. In this article, we...
The varnish defect called “eyeballing” is a common problem in the metal packaging industry. This defect is characterized by the appearance of small unvarnished circular areas on the surface of the material, which may affect the quality and appearance of...
Introduction Electric welding is an essential process in the manufacture of metal cans, especially in “three-piece” cans. This technical article will address the chronology, fundamentals and improvements in electric welding applied to can manufacturing....
Introduction Twist-off closures are a type of metal closure widely used in the packaging industry, especially on glass or plastic jars for food packaging. This article provides a detailed description of the characteristics, manufacturing process and applications of...
Introduction The crown cap is an essential element in the metal packaging industry, especially in the beverage sector. Also known as chapa in Spain and South America, corcholata in Mexico, platillo in Panama, tapa in Colombia and tillo in Ecuador, this small component...
Introduction Metal containers have been a popular choice for preserving and transporting food and beverages for centuries, thanks to their strength, durability and airtightness. In this article, we will discuss current and future trends in the use of metal packaging,...
Introduction Metal containers are widely used in the food and beverage industry due to their conservation and resistance properties. A crucial aspect in the quality of these containers is the integrity of the double closure, which guarantees the tightness and...
Introduction Metal containers are widely used in the food, beverage and consumer products industry due to their durability, strength and shelf life. The printing and decoration of these containers require the use of special inks to ensure proper adhesion and an...
Introduction Varnishes on metal containers play a fundamental role in the protection and preservation of packaged products. These coatings allow a wide variety of products, from acidic foods to carbonated beverages, to be packaged safely and efficiently. In this...
Introduction Metal can seamers are essential machines in the packaging industry, as they ensure the integrity and preservation of canned products. In this article, we will explore how these machines work, how to regulate them and the importance of proper maintenance....
The properties of a varnish are crucial to ensure the protection and proper finish of metal containers. The following are some of the most important properties of a varnish: Viscosity: Viscosity is a measure of a liquid’s resistance to flow. A varnish must have...
there is a formula for calculating the “Closing setting height” (Hc) on a seaming machine. The formula is as follows:Hc = M – A + 1.09Where: Hc is the closed setting height. M is the height of the unsealed can. A is the height of the lip of the...
A false closure can be caused by several factors. To solve it, it is first necessary to identify the cause of the problem and then apply the appropriate solution. Here are some common causes and possible solutions: Damaged, bruised or crushed body tab: Check the...
Design of a matrix for aerosol domes Material analysis: The first thing to do is to analyze the mechanical properties of the tinplate you will use, such as tensile strength, elongation and yield strength. This will help you to understand how the material will behave...
the Angelus 60L, which is a popular model in the can packing industry. 😊The Angelus 60L is an automatic seaming machine used to seal cans of different sizes and formats. This seamer is known for its durability, efficiency and ease of use. Here are some...
Cold welding occurs when the weld is not heated properly and does not adhere properly to the metal parts. Here are some possible causes and solutions for this problem: Insufficient current: If the electrical current is too low, the weld will not get hot enough. Be...
The critical parameters of the double closure are essential aspects that guarantee the quality and tightness of the closure on metal containers. Some of these critical parameters are detailed below: Percentage of corrugations: Corrugations in the seal may affect...
The best packaging for cans may vary depending on the product to be packaged and the specific objectives sought, such as product protection, ease of transport, sustainability and visual appeal. Here are some popular can packaging options: Cardboard boxes: Cardboard...
Protection: Metal cans offer excellent protection to the products inside, maintaining food quality and freshness. In addition, the cans are light and air resistant, which helps preserve the flavor and nutrients of the food. Durability: Metal cans are strong and...
Compactness in the context of container closures, such as double closures, refers to the degree of contact between the layers of tinplate forming the closure. Compactness is related to clearance and is used to evaluate the quality of the seal in terms of tightness and...
Seaming is a critical process in the manufacture of metal cans, as it ensures that the can is properly sealed to maintain the freshness and quality of the product inside. Next, I will provide you with relevant information about the sewing process and the machines used...
Some examples of forms that could be useful in this context: Materials Receiving Inspection: This form is used to record and evaluate the quality of materials received from suppliers, such as sheet metal, inks and coatings. It should include details such as...
The life of an ISO Blade in a coater can be affected by several factors. Some of the possible causes for an ISO Blade to wear out quickly include: Blade material quality: If the blade is made of poor quality material or is not properly tempered, it can wear out...
Tinplate is a widely used material in the metal packaging industry. It is a thin steel sheet, coated with a layer of tin on both sides, which provides corrosion resistance and excellent solderability. Tinplate is known for its versatility, durability and...
The rivet is a key component in the manufacture of easy-open lids and rings for metal containers. It is formed from the bulb and is the part in charge of joining the ring and the cap. It is crucial that their formation is very precise, because if their diameter and...
A patinated closure is a term used in the packaging industry, especially in the metal packaging industry. Refers to a defect in the sealing process of cans and lids, where the closure is not performed correctly and may appear to be slipped or uneven. This problem can...
To clean a coater after applying a white enamel, follow these steps in detail: Turn off the machine and disconnect it from the power source to ensure safety during the cleaning process. Remove any excess varnish or glaze still on the machine using a scraper or plastic...
There are several types of varnishes used on metal containers, and their choice depends on the specific use and requirements of the container. Some of the most common varnishes are: White base varnish: This varnish is applied on lithographed containers and acts as a...
Varnish flaking on tinplate can be caused by several factors, such as varnish quality, surface preparation and storage conditions. Below, I provide you with detailed information on some of the possible reasons for the flaking of varnish on tinplate: Surface...
The CMYK (Cyan, Magenta, Yellow and Black) process is a color model used in the printing of aluminum cans and other materials. This model is based on the mixture of these four basic colors to create a wide range of shades. Here’s how the CMYK process works in...
Butterfly welding, also known as “Butterfly” welding, is a welding method used in the manufacture of metal containers. This technique was introduced by Soudronic AG of Switzerland, with its semi-automatic electric welding sewing machines for tinplate. In...
Metal closures for wine bottles are an important aspect to preserve the quality and freshness of wine. There are several types of metal closures for wine bottles, and each has its own advantages and disadvantages. Let me provide you with information on the most...
To avoid internal porosity of a metal container, it is important to follow some recommended practices during the manufacturing and coating process. Here are some suggestions: Use a suitable interior coating: Select a high quality, porosity-resistant interior coating...
Aluminum cans may leak when containing a carbonated beverage with 12% alcohol and a pH of 3 due to a combination of factors: Internal pressure: Carbonated beverages produce CO2 gas, which increases the internal pressure inside the can. This pressure can be even higher...
BPA-based, BPA-free and epoxy coatings are different types of coatings used in food packaging, especially in metal cans. Here are the main differences between them: BPA-based coatings: These coatings contain bisphenol A (BPA), a chemical used in the production of...
Yes, BPA-free enamel coatings do not contain bisphenol A (BPA). Manufacturers have developed alternative coatings for food cans that do not contain BPA to address consumer concerns and meet regulatory requirements. These alternatives have been tested and approved for...
Tinplate and TFS (Tin Free Steel) are two types of materials used in the manufacture of metal containers, such as cans and lids. Both materials have different properties and characteristics that make them suitable for various applications. Here are the main...
Wrinkles in the double seal of a can can indicate possible problems in the quality of the seal and, consequently, affect the integrity of the container and the preservation of the product inside. It is important to identify and analyze wrinkles to minimize the risk of...
Double seaming is a fundamental process in the manufacture of metal containers, such as food and beverage cans. This process ensures that the contents of the package are well sealed and protected from external factors such as humidity and air, thus maintaining the...
Some common welding defects and their causes: Cold weld: Can be caused by a braked body in the calibration crown, incorrect adjustment of the nitrogen injector, or lack of nitrogen or insufficient flow. Hot weld: Can be caused by hot weld itself, insufficient current,...
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