Unlock instant, AI-driven research and patent intelligence for your innovation.

A packaging laminate and a method of producing the same

A packaging layer and pressing plate technology, applied in the field of packaging laminates, can solve problems such as single and uniform particle distribution

Inactive Publication Date: 2012-11-14
TETRA LAVAL HLDG & FINANCE SA
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] An inherent drawback in the manufacture of such existing packaging laminates is that the particle-containing polyolefin blend requires overly precise process monitoring and complex extrusion processing equipment to ensure a single, uniform particle distribution throughout the laminate and polyolefin layers, respectively.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A packaging laminate and a method of producing the same
  • A packaging laminate and a method of producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Although the invention will be described with particular reference to the drawings, it is not limited exclusively to these described embodiments. It will be apparent to those skilled in the art that individual details in the illustrated and described embodiments may be modified under the guidance of the specification without departing from the innovative concepts disclosed herein. Accordingly, the innovative concept is limited only by the appended claims.

[0030] therefore, figure 1A cross-sectional view of a packaging laminate (general reference 10) according to the invention is schematically illustrated. The packaging laminate 10 has a thin layer 11 of paper or paperboard and outer polyolefin liquid-tight coatings 12 and 13, one of the coatings 12 comprising light-absorbing carbon particles in an amount sufficient to give the packaging laminate 10 the necessary light control (especially is the hermetic property of UV rays). The particle-containing coating 12 is l...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A packaging laminate for a thin-walled packaging container for liquid dairy produce. The laminate (11) includes a thin layer (11) of paper or paperboard and outer, liquid-tight polyolefin coatings (12, 13) of which one (12) contains light -absorbing carbon particles in sufficient quantity to impart to the container adequate tightness properties against light, in particular UV radiation. The particle-containing coating (12) is laminated to the paper- or paperboard layer (11) by means of an extruded lamination layer (14) of polyolefin. To conceal the particle-containing coating (12) and making it invisible through the paper- or paperboard layer (11), the paper- or paperboard layer (11) contains light-reflecting particles, preferably titanium dioxide particles, spread throughout the bulk of the paper- or paperboard layer (11). The quantity of light -reflecting particles in the paper- or paperboard layer (11) lies between 7 and 20 weight%, counted on the total weight of the paper- or paperboard layer (11).

Description

technical field [0001] The present invention relates to a packaging laminate comprising a layer formed of paper or paperboard and an outer polyolefin liquid-tight layer, wherein one polyolefin coating contains light-absorbing carbon particles. In particular, the invention relates to such packaging laminates for packaging liquid food products such as milk or yoghurt. [0002] The invention also relates to a method of manufacturing such a packaging laminate. Background technique [0003] Dairy products, especially milk and yogurt, are very light sensitive and can be quickly destroyed, or go bad, if exposed to visible light. A packaging laminate comprising a layer formed of paper or paperboard must itself have inherent light blocking properties sufficient to exclude or prevent the passage of such harmful light, but requires that this layer be made of unbleached pulp. However, a problem with packaging laminates having one or more layers formed of such unbleached paper or cardb...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B65D65/16B32B27/10B32B27/20B65D65/40D21H17/67B65D75/26B65D81/30
CPCB32B29/00D21H19/20D21H17/67B32B27/32B65D65/20B32B27/10B65D75/26B65D81/30B65D65/40B32B27/20B65D65/16D21H17/675
Inventor 伊娃·艾伦贝格凯特琳娜·乔森纳米夏埃尔·瓦姆斯勒
Owner TETRA LAVAL HLDG & FINANCE SA