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A method for providing crease lines

A technology of crease lines and creases, applied in the field of systems for providing crease lines, pressing tools, and pressing tools to packaging materials including a main body layer, capable of solving the increased risk of crack formation, excessive decomposition of the main body layer, and weakened packaging materials And other issues

Active Publication Date: 2019-05-21
TETRA LAVAL HLDG & FINANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with deeper embossed crease lines, there is a risk that the bulk layer of the packaging material will break down excessively and even cut or severely weaken the bulk layer of the packaging material
In the case of packaging materials laminated with a thin aluminum layer acting as an oxygen barrier layer, the possibility of cracks forming in the aluminum foil due to deeper impressions causing air entrapment (which makes the foil weaker by not being supported by adjacent layers) increased risk

Method used

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  • A method for providing crease lines
  • A method for providing crease lines
  • A method for providing crease lines

Examples

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Embodiment Construction

[0061] Packaging materials having bulk layers can be used in many different applications to provide cost effective, environmentally friendly and technically superior packaging for a large number of products. In liquid product packaging, such as in liquid food packaging, cardboard-based packaging materials are often used to form the final individual package. Paperboard based packaging materials are configured suitable for liquid packaging and, according to embodiments, have certain properties suitable for this purpose. Thus, the packaging material has a bulk layer of paperboard that meets the requirements of providing stiffness and dimensional stability to a packaging container manufactured from the packaging material. Therefore, the commonly used paperboard is fibreboard, ie a fibreboard with a network structure of a large number of cellulose fibres, which has suitable density, stiffness and resistance to possible exposure to moisture. On the other hand, non-fibrous cellulose...

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Abstract

A method for providing a crease line (9) to a packaging material (2) having a body layer is provided. The method comprises the steps of arranging said material (2) to be creased on an elastic anvil (14) and a pressing tool (12) having at least one protruding ridge (20) facing said anvil (14) between, and towards the anvil (14), press the ridge (20) so that the packaging material (2) will be embossed, whereby the width of the embossment follows the width of the ridge (20) against Continuously increased by pressing on said anvil (14).

Description

technical field [0001] The invention relates to a method for providing crease lines. More particularly, the present invention relates to an improved method of providing crease lines to a packaging material comprising a bulk layer, such as a laminated paperboard-based packaging material for liquid food packaging. The invention also relates to a pressing tool and a system for providing crease lines comprising such a pressing tool. Background technique [0002] In packaging technology, single-use disposable type packages are commonly used, and a large group of these so-called single-use disposable packages are made of laminated sheet or roll packaging materials comprising A relatively thick body layer, eg paper or cardboard, and an outer plastic liquid-tight coating. In some cases, especially in conjunction with products that are particularly corrosive and oxygen sensitive, the packaging material also includes aluminum foil to give the package excellent gas and light barrier ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65B47/04B31B50/25
CPCB65B47/04B31F1/08B65B57/00B65B9/10B31B50/25B31B2155/00B31B2170/20B65D5/4266B31F1/00B31F1/0025B65D5/02B65B9/20
Inventor 汉斯·约翰逊拉尔斯·贝里霍尔茨延斯·奎斯特
Owner TETRA LAVAL HLDG & FINANCE SA