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- Practical Guide -
Page 106 of 153
APPENDIX 1 TO ANNEX II
GLOSSARY OF THE TERMS RELATING TO POLYMERIC LAYERS
ON PAPER AND BOARD
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(Extract from a CEN document)
1.
Scope and field of application
This document deals with terms used in the manufacture of polymeric or plastics layers and
their application to paper and board. The following terms are used in the converting and
packaging industries in respect of multi-layer materials.
Note:
According to the field of application of Directive 2002/72/EC [A29] the surface intended to come into
contact with foodstuffs is of polymeric or plastics origin.
2.
Terms
2.1
BASIC MATERIALS
2.1.1 Polymer: Macromolecular compound obtained by polymerisation (polyaddition,
polycondensation or any other similar process) of monomers and other starting substances or
by fermentation with bacteria from other starting substances.
2.1.2 Monomer and other starting substance: Substance used in the manufacture of a
macromolecule, which constitutes the repeating unit of a polymer chain or of a polymer
network of any substance used for the manufacture of a plastics for food contact or used to
modify existing natural or synthetic macromolecular substances.
2.1.3 Plastics: Polymer or mixture of polymers to which additives may have been added and which
is used, as such, for the manufacture of finished materials and articles. Or as defined in
2002/72/EC the organic macromolecular compounds obtained by polymerisation,
polycondensation, polyaddition or any other similar process from molecules with a lower
molecular weight or by chemical alteration of natural macromolecules.
2.1.4 Additive: Substance, which is incorporated into plastics to achieve a technical effect in the
finished product or used to provide a suitable medium in which polymerisation occurs
2.1.5 Pre-polymer: Reactive polymer with few repeating units, which has been prepared for use as
monomer or starting substance.
Note:
Usually there are approximately 2 to 20 repeating units.
2.1.6 Paper: Generic term for a range of materials in the form of a coherent sheet or web,
excluding sheets or laps of pulp commonly understood for paper making or dissolving
purposes and non-woven products, made by deposition, of vegetable, mineral, animal or
synthetic fibres, or their mixtures, from a fluid suspension onto a suitable forming device,
with or without the addition of other substances.
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This version does not take into consideration of the new definition of some terms, which appear in Chapter II,
Section 1, paragraph 4.1