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Induction heating sealing device

A technology of induction heating and sealing device, which is applied in the directions of packaging sealing/fastening, packaging, transportation packaging, etc., and can solve the problems of insufficient melting of the plastic layer and insufficient sealing

Inactive Publication Date: 2018-01-02
TETRA LAVAL HLDG & FINANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] In particular, the temperature of the packaging material at the cold zone 106 may not be sufficient to provide proper melting of the plastic layer and thus a proper seal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] refer to figure 2 , shows a packaging machine 1 for continuously producing sealed packages 2 of food products from a web 3 of packaging material unrolled from a reel 4 and fed along a forming path P.

[0039] The packaging machine 1 preferably produces packages 2 of pourable food products, such as pasteurized or UHT milk, fruit juices, wine, peas, beans and the like.

[0040] The packaging machine 1 can also produce packages 2 of food products which are pourable when the package 2 is produced and which solidify after the package 2 has been sealed. An example of such a food product is a portion of cheese which is melted when the package 2 is produced and which solidifies after the package 2 has been sealed.

[0041] The packaging material has a multi-layer structure comprising essentially a base layer for stiffness and strength, which may consist of a layer of fibrous material (e.g., paper) or a layer of mineral-filled polypropylene material and a plurality of layers o...

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PUM

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Abstract

An induction heating sealing device (30) for sealing a packaging material comprising an electrically conductive layer and advancing, in use, along a first direction (A), said induction heating sealingdevice (30) comprising an inductive element (100), said inductive element (100) comprising a first leg (31) extending along said first direction (A) and within which, in use, an alternate currents flows, said first leg (31) facing, in use, an area (44) of said packaging material to be sealed and being configured to induce, in use, an eddy current within said area (44), and a second leg (32) arranged on one side of said first leg (31) and facing a further area (45) of said packaging material, wherein said first leg (31) comprises at least one first portion (41) and at least one second portion(42) spaced apart from one another in a second direction (S) transversal to said first direction (A).

Description

technical field [0001] The present invention relates to an induction heat sealing device, in particular an induction heat sealing device for heat sealing a web of packaging material for producing sealed packages of pourable food products. Background technique [0002] It is well known that many food products such as juices, pasteurized or UHT (Ultra High Temperature Treated) milk, wine, tomato paste, etc. are sold in packages made of aseptic packaging materials. [0003] A typical example of this type of packaging is the parallelepiped-shaped packaging called Tetra Brik Aseptic (registered trademark) for liquid or pourable food products, which is made by folding and sealing a laminated strip packaging material. [0004] The packaging material has a multi-layer structure comprising essentially a base layer for stiffness and strength, which may consist of a layer of fibrous material (e.g., paper) or a layer of mineral-filled polypropylene material and a plurality of layers of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/00B29C65/36B29C65/50B65B51/22B65B51/24B65B51/26B29K23/00B29K705/02
CPCB29C65/3656B29C65/3668B29C65/368B29C65/5042B29C66/1122B29C66/225B29C66/43B29C66/49B29C66/71B29C66/72321B29C66/72328B29C66/7234B29C66/72341B29C66/81423B29C66/81457B29C66/83413B29C66/849B29K2705/02B65B51/227B65B51/24B65B51/26B29C66/4322B29K2023/086B29K2023/06B29K2023/12
Inventor 安德里亚·巴比尼安德里亚·达尔斯罗埃莉萨·卢皮塞尔吉奥·托马斯·曼奇尼
Owner TETRA LAVAL HLDG & FINANCE SA