Influence of hole geometry on coating quality
(2007)Packaging Logistics
- Abstract
- This diploma work is a result of a co-operation between the Faculty of Engineering, Lund University (LTH) and the department of Material Treatment, Tetra Pak Packaging Solutions AB in Lund, Sweden. The production and tests were done at Tetra Pak Limburg respectively Lund, Autumn 2007.
Coating of large holes in a paperboard with few tenth of µm thickness layer of low density polyethylene (denoted LDPE) is challenging. The conditions during coating can lead to the appearance of small holes in the LDPE membrane, called holes in plastics (denoted HiP). The goal of this diploma work is to identify and test new top view hole geometries and evaluate the appearance of HiP located next to the edge of the hole.
The hole in the paperboard could... (More) - This diploma work is a result of a co-operation between the Faculty of Engineering, Lund University (LTH) and the department of Material Treatment, Tetra Pak Packaging Solutions AB in Lund, Sweden. The production and tests were done at Tetra Pak Limburg respectively Lund, Autumn 2007.
Coating of large holes in a paperboard with few tenth of µm thickness layer of low density polyethylene (denoted LDPE) is challenging. The conditions during coating can lead to the appearance of small holes in the LDPE membrane, called holes in plastics (denoted HiP). The goal of this diploma work is to identify and test new top view hole geometries and evaluate the appearance of HiP located next to the edge of the hole.
The hole in the paperboard could be divided into two sections, inlet and outlet position, where inlet position is the edge of the hole that meets the LDPE layer first. HiP in inlet position could be related to the stretched LDPE layer, while HiP in outlet position could be caused by the LDPE build-up that is a consequence of lift in the paperboard during coating.
Six new test geometries were produced with conventional production machines. These, together with circular reference holes were divided into three theoretical groups and evaluated separately and compared within each group.
Test results showed that the top view geometry has an influence on HiP. It can also be proved that the lift in the paperboard is directly proportional to the amount of HiP in outlet position. Surprisingly, the amount of HiP in inlet position is reversely proportional to the lift in the paperboard, thus a small lift corresponds to a large amount of HiP. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/1320214
- author
- Karlsson, Elin
- supervisor
- organization
- year
- 2007
- type
- H2 - Master's Degree (Two Years)
- subject
- keywords
- Coating and surface treatment, Produktionsteknik, Production technology, 'Hole geometry', Lamination, 'Hole in paperboard', Skikt och ytbehandling
- language
- English
- id
- 1320214
- date added to LUP
- 2008-10-24 00:00:00
- date last changed
- 2010-02-01 14:40:04
@misc{1320214,
abstract = {{This diploma work is a result of a co-operation between the Faculty of Engineering, Lund University (LTH) and the department of Material Treatment, Tetra Pak Packaging Solutions AB in Lund, Sweden. The production and tests were done at Tetra Pak Limburg respectively Lund, Autumn 2007.
Coating of large holes in a paperboard with few tenth of µm thickness layer of low density polyethylene (denoted LDPE) is challenging. The conditions during coating can lead to the appearance of small holes in the LDPE membrane, called holes in plastics (denoted HiP). The goal of this diploma work is to identify and test new top view hole geometries and evaluate the appearance of HiP located next to the edge of the hole.
The hole in the paperboard could be divided into two sections, inlet and outlet position, where inlet position is the edge of the hole that meets the LDPE layer first. HiP in inlet position could be related to the stretched LDPE layer, while HiP in outlet position could be caused by the LDPE build-up that is a consequence of lift in the paperboard during coating.
Six new test geometries were produced with conventional production machines. These, together with circular reference holes were divided into three theoretical groups and evaluated separately and compared within each group.
Test results showed that the top view geometry has an influence on HiP. It can also be proved that the lift in the paperboard is directly proportional to the amount of HiP in outlet position. Surprisingly, the amount of HiP in inlet position is reversely proportional to the lift in the paperboard, thus a small lift corresponds to a large amount of HiP.}},
author = {{Karlsson, Elin}},
language = {{eng}},
note = {{Student Paper}},
title = {{Influence of hole geometry on coating quality}},
year = {{2007}},
}