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Recycling-friendly packaging laminate with improved thermal stability during sealing

A packaging layer, sealing layer technology, applied in the field of recyclable packaging laminates with improved heat resistance during sealing, can solve problems such as increasing the cost of deep drawable laminates

Inactive Publication Date: 2020-02-28
CONSTANTIA HUECK FOLIEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since EVOH is an expensive material, this significantly increases the cost of deep-drawable laminates

Method used

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  • Recycling-friendly packaging laminate with improved thermal stability during sealing
  • Recycling-friendly packaging laminate with improved thermal stability during sealing
  • Recycling-friendly packaging laminate with improved thermal stability during sealing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] figure 1 A packaging laminate 1 according to the invention is shown having two outer layers, namely a sealing layer 2 and a thermal stabilization layer 3 , and a matrix layer 4 arranged between them.

[0022] The matrix layer 4 consists essentially of polyethylene (PE) and thus a compatible material with regard to recyclability. Advantageously, the matrix layer 4 has a PE fraction, advantageously high-density (HDPE) polyethylene (PE), of at least 60% by volume, preferably at least 70% by volume, and particularly preferably at least 80% by volume. PE share. The PE fraction here can reach approximately 100% by volume, wherein a PE fraction of 100% by volume is generally never reached due to customary additives in the packaging laminate 1 (eg slip additives, antiblocking additives, dyes, fillers, etc.). The rest (besides possible additives) are compatible polyolefin materials that do not impair recyclability. As compatible polyolefin material basically any type of poly...

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PUM

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Abstract

The invention relates to a recycling-friendly packaging laminate having an exterior sealing layer (2) with a polyethylene content of at least 80 vol.%, a substrate layer (4) with a polyethylene content of at least 60 vol.% and a thermal stability layer (6), wherein the thermal stability layer (3) is arranged on the outside, opposite the sealing layer (2) and the substrate layer (4) is arranged between the sealing layer (2) and the thermal stability layer (3), wherein the thermal stability layer (3) is made of ethylene vinyl alcohol copolymer and the thickness of the thermal stability layer (3)amounts to up to 10% of the total thickness of the packaging laminate (1), but at most 10 [mu]m.

Description

technical field [0001] The invention relates to a recyclable packaging laminate and a method for producing such a packaging laminate, wherein an outer sealing layer with a polyethylene fraction of at least 80% by volume is combined with a polyethylene of at least 60% by volume A matrix layer of polyethylene content is connected to the heat-stabilizing layer, wherein the heat-stabilizing layer is arranged on the outside relative to the sealing layer, and the matrix layer is arranged between the sealing layer and the heat-stabilizing layer. Background technique [0002] Packaging laminates are used in the packaging industry, which should have different properties depending on the application. Such packaging laminates are usually multilayer plastic films produced by extrusion, coextrusion (in both cases not only flat film but also blown film) or lamination (by means of Lamination adhesives are used to connect the individual layers, also known as extrusion lamination), and thei...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/18B32B27/20B32B27/32B32B27/34B32B27/30B32B27/16
CPCB32B27/30B32B27/32B32B27/08B32B27/16B32B27/18B32B27/20B32B27/306B32B27/308B32B27/325B32B27/327B32B27/34B32B2250/03B32B2250/04B32B2250/05B32B2250/24B32B2250/40B32B2255/10B32B2255/20B32B2255/205B32B2255/26B32B2270/00B32B2307/308B32B2307/31B32B2307/516B32B2307/518B32B2307/5825B32B2307/7244B32B2307/7246B32B2307/7248B32B2307/732B32B2307/746B32B2307/75B32B2435/02B32B2439/46B32B2439/70
Inventor T·拉姆提圭A·格雷芬施泰因
Owner CONSTANTIA HUECK FOLIEN
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