INDUCTION SEALING Meaning and
Definition
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Induction sealing is a process commonly used in the packaging industry to create a reliable and tamper-proof seal on containers. It involves placing a foil liner on the opening of a container, such as a bottle or jar, and applying heat generated by electromagnetic induction to bond the foil liner with the container.
The induction sealing process typically involves a two-step procedure. First, a hermetically sealed liner made of aluminum foil laminated with a heat sealable material is inserted onto the container's mouth. The liner securely rests on the container opening to create a secure seal. Second, an induction sealing machine generates an oscillating magnetic field, which induces an electric current in the foil liner. This current rapidly heats up the foil, which melts the heat sealable layer and fuses it to the container's rim, creating an airtight and leak-proof seal.
Induction sealing offers various benefits in packaging applications. It provides tamper evidence and product integrity, ensuring that a product remains uncontaminated and ensures consumer confidence. Moreover, it offers resistance to leaks, spoilage, and tampering, thus extending product shelf life. It also helps protect against counterfeit products and facilitates easy identification of unopened containers.
This sealing method is widely used in industries such as pharmaceuticals, food and beverage, cosmetics, and chemicals. The process is efficient and cost-effective, offering a high level of security and reliability in sealing containers. Induction sealing has become an essential technique in the packaging industry, enhancing product safety and quality.
Etymology of INDUCTION SEALING
The word "induction sealing" is a compound term that combines two elements: "induction" and "sealing".
1. Induction: The word "induction" in this context refers to the method of utilizing electromagnetic induction to generate heat in a material. It is derived from the Latin word "inductio", which means "a leading in". The term was first introduced in the field of physics by Michael Faraday in the 1830s to describe the phenomenon of generating an electric current in a closed circuit through the variation of magnetic fields.
2. Sealing: The word "sealing" refers to the process of closing and securing something tightly to prevent contents from leaking, spilling, or tampering. Its etymology can be traced back to the Old English word "seal", which meant "a mark or sign".
