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Induction sealing device for heat sealing packaging material for producing sealed packages of pourable food products

一种包装材料、密封设备的技术，应用在包装密封/紧固、包装、运输包装等方向，能够解决支承体易于开裂、缩短密封设备工作寿命等问题

Active Publication Date: 2010-03-31
TETRA LAVAL HLDG & FINANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The applicant has noticed that due to the mechanical loads experienced in use, the support body is prone to cracking, which shortens the working life of the sealing device and limits the use of this device on high-speed packaging units

Method used

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  • Induction sealing device for heat sealing packaging material for producing sealed packages of pourable food products
  • Induction sealing device for heat sealing packaging material for producing sealed packages of pourable food products
  • Induction sealing device for heat sealing packaging material for producing sealed packages of pourable food products

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Experimental program
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Embodiment Construction

[0024] figure 1 The number 1 in overall designates a packaging unit for producing aseptic sealed packages 2 of pourable food products such as pasteurized or UHT milk, fruit juices, wine, etc. from a tube 3 of packaging material.

[0025] The packaging material has a multilayer structure (not shown) and comprises layers of fibrous material (usually paper) covered on both sides by corresponding layers of heat-sealable plastic material (e.g. polyethylene); The sides of the packaging material for the food product in package 2 also have a layer of electrically conductive barrier material, such as aluminium, which in turn is covered by one or more layers of heat-sealable plastic material.

[0026] A tube 3 is formed in a known manner upstream of the unit 1 by folding longitudinally and sealing a strip of heat-sealed thin strip material, said tube 3 being filled with sterilized or aseptically processed food products and produced by known The equipment (not shown) is fed in direction...

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Abstract

An induction sealing device (15) for heat sealing packaging material for producing sealed packages of pourable food products and fed in a first direction, the sealing device having inductor means (20, 21) which interact with the packaging material by means of at least one active surface (25, 26); a supporting body (24) made of heat-conducting material and housing the inductor means (20, 21); an insert (30) made of magnetic flux-concentrating material and housed in the supporting body (24); and a member (23) made of plastic material, and having at least a first portion (19) interposed, in the first direction (A), between the supporting body (24) and the insert (30) so as to be at least partly surrounded by the supporting body (24).

Description

technical field [0001] The present invention relates to an induction sealing apparatus for heat sealing packaging material for producing sealed packages of pourable food products. Background technique [0002] Many pourable food products, such as fruit juices, UHT milk, wine, ketchup, etc., are sold in packages made of sterile packaging materials. [0003] A typical example of this type of packaging is the parallelepiped-shaped packaging for liquid or pourable food products known as Tetra Brik Aseptic (registered trademark), which is made by folding and sealing laminated strip packaging material. to make. [0004] The packaging material has a multi-layer structure comprising essentially a base layer to provide stiffness and strength, and a number of layers of heat-sealable plastic material which may include a layer of fibrous material (e.g. paper) or a mineral filling Layers of polypropylene material; said number of layers of heat-sealable plastic material, such as polyeth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/36B65B51/22
CPCB29C65/745B29C66/8491B29C66/81461B65B51/227B29K2071/00B29C66/80B29C66/4312B29C66/81457B29C66/843B29C66/001B29C66/026B29L2009/00B29K2023/12B29K2023/06B29C66/81431B29L2009/003B29C66/1122B29K2995/0069B29K2023/086B29C65/3644B29L2031/7166B29C65/3668B29K2305/02B29C66/81427B29C66/72321B29K2711/123B29C65/368B29C65/3656B65B51/303B29K2995/0067B29C66/83543B29K2995/0089B29C66/81264B29C66/8167B29C66/7212B29C66/71B29C66/72328B29K2995/0008B29C66/8126B29C66/8122B29C65/7451B29K2309/08B29K2081/04B29K2833/18B29K2881/04B29C65/00
Inventor R·帕尔姆奎斯特A·拉比尼H·G·安德森U·丹尼尔森
Owner TETRA LAVAL HLDG & FINANCE SA
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