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Process for producing a packaging weld

A technology of flexible packaging and welding area, applied in the field of packaging tubes for packaging liquid or viscous products, and the field of flexible packaging.

Active Publication Date: 2021-04-09
AISAPACK HLDG SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The procedure proposed in EP3292942 cannot be applied since in the construction and embodiment according to the invention simultaneous measurements from both sides are not possible

Method used

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  • Process for producing a packaging weld
  • Process for producing a packaging weld
  • Process for producing a packaging weld

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0136] figure 1 A first example of a weld seam 1 produced by overlapping ends of sheets (eg laminate) in order to produce a package (eg tube) is shown. This weld configuration is generally an example of a weld configuration measured using the procedure according to the invention.

[0137] The ends of the laminate 2 (usually initially flat) are placed one on top of the other to form the overlap 9 . Laminates are generally formed of at least three layers, in this illustrative example of a top layer 3, a bottom layer 4 and a functional layer 5 (as a barrier layer). The measurement referenced as "6" defines the thickness of the weld (to be measured according to the principles of the invention), the reference number "7" shows the cast material after welding, and the reference number "8" indicates the thickness between the ends. Solder interface.

[0138] The weld seam properties of a package have a first-order impact on the strength and tightness of the seal as well as the prote...

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Abstract

The invention concerns a method and device for continuous welding of a sheet of plastic material for making flexible packages, such as tubes, comprising at least the following steps: -) positioning the sheet with respect to the welding device; -) placing the ends of the sheet in contact; -) forming a welded zone by heating, pressing and cooling said ends; -) acquiring a first time signal proportional to the thickness of the weld; -) transforming the first time signal into a first frequency signal, and defining a low-frequency spectrum, a medium-frequency spectrum and a high-frequency spectrum; -) reconstructing at least one secondary low-frequency signal from the low-frequency spectrum in order to measure the thickness of the weld.

Description

[0001] corresponding application [0002] This application claims priority from an earlier European Application No. EP 18193142.9 filed on September 7, 2018 in the name of AISAPACK HOLDING SA, the content of which is incorporated in its entirety into this application by reference. technical field [0003] The present invention relates to the field of packaging, and more particularly to flexible packaging produced by welding plastic sheets. The invention can be used, for example, to produce packaging tubes intended for packaging liquid or viscous products. Of course, the invention is not limited to this single application for the production of packaging tubes, but can be applied in other fields in which objects are produced by welding sheets, for example made of plastic. Background technique [0004] Publication WO 2011 / 012930 describes a process for welding packages made of plastic material and having a tubular shape. The process includes the following actions: [0005] -...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/02B65B51/26B65B57/02G01B7/06B29C65/10B29C65/14B29C65/20B29C65/36B29C65/50B29C65/48B29C65/78
CPCG01B7/107B65B51/26B29C65/02B29C65/10B29C65/14B29C65/20B29C65/36B29C65/48B29C65/5042B29C65/7894B29C66/1122B29C66/1142B29C66/1222B29C66/1226B29C66/1282B29C66/12881B29C66/133B29C66/4322B29C66/95B29C66/954B29C66/96B29C66/9674B29C66/974B29C65/04B29C65/7802B29C65/7832B29D23/00B29C66/122B29C66/128B65B51/10B65D85/72B29C65/18B29C66/849
Inventor J·托马塞Y·吉克斯-柯莱特G·布希亚F·弗莱雷特Y·莱珀特温F·莫奈
Owner AISAPACK HLDG SA
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