» Home  



Substance added to a product to modify it.

Anti-condensation additive:

The addition of this agent to the film fosters the distribution of micro-drops of water into a continuous water layer.

Anti-oxidant Additive:

Additive which prevents black and orange dot-type defects, as well as cross-linking freezing.

Anti-static Additive:

Additive which improves surface slip.

Anti-UV Additive:

Additive that protects polymers, which are very sensitive to deterioration caused by the sun's ultra-violet rays in case of exterior exposure.

Anti-block Additive:

Additive which can solve two major problems commonly occurring in the film industry, which are: easing the winding of the film coil and the "blocking" effect.

Adhesive Additive:

Additive used to manufacture LDPE or LLDPE cling film.

Combined Additives:

Masterbatches with combined properties.

Flame Retardant Additive:

Additive which contributes to flame resistance.

Infra-red Additive:

Allows heat that has been accumulated in the daytime to be maintained throughout the night, through a process of blocking the heat radiation reflected by the ground.

Viscosity-modifying Additive:

Adjusts the polypropylene viscosity (or MFR).


Anything that produces an effect in a phenomenon.

Blocking Agent:

Creates nodules at the surface of the film which prevent the film from slipping.

Processing Aid:

The addition of a processing aid that is dispersed microscopically within the polymer creates a constant lubricating layer on the draw plate's surface during extrusion, which fosters the polymer's flow and protects against the undesirable problems such as the "orange peel" and "draw-plate deposit" effects.

Purging Agent:

Accelerates the extruder cleaning process when ranges (colour, polymer type) are changed.

Slip Agent:

The use of slip agents for polyethylene films reduces the Coefficient of Friction (COF) while maintaining optic properties such as brilliance, transparency, and clarity.

Inflating Agent:

Causes the matrix to foam.


The term "bioplastic" refers to the various plastic materials derived from renewable resources.


Biological macromolecule derived from the polymerization of simple or monomer molecules.

Technical specifications:

The technical specifications are contained in a document that is essential for carrying out a project. It specifically describes the needs that the stakeholders need to meet: objectives, targets, competition, technical specifications, time frames, etc.

Coefficient of Friction (COF):

The coefficient of friction is the ratio between the slip force and the force of attraction between two contacting surfaces. This force is generally gravity. This coefficient is a measure of the difficulty with which the surface of a material slides on another material.


Agglomeration of a homogeneous mix of powders by melting one of the additives. This is carried out by applying pressure to the mix on the draw-plate.


Term referring to sets composed of several elements, several materials, or associated devices.


Procedure that consists of mixing a polymer (thermoplastic resin) with one or more additives by melting them together in order to obtain a plastic material.


Machine that carries out extrusions (shaping technique for metals, plastics, etc., through warm threading).


(Thermo) Mechanical manufacturing process by which a compressed material is forced through a draw-plate with the section of the part to be manufactured.


Operation that consists of transforming powder into an aggregate.


Additive concentrates, including pigments and dyes in a thermoplastic resin.

Off-shore :

Term originally referring to activities occurring off-shore. It may apply to several domains. For example, in the petroleum industry, off-shore refers to searching for and harvesting petroleum in the sea, generally on a petroleum platform.


Oxide with a high proportion of oxygen.

Poly-Iso Butylene (PIB):

Polymer composed of isobutylene monomers.


Variety of plastic substrates obtained by polymerization of ethylene.


Molecule with high molecular weight composed of monomers linked to each other through covalent bonds.


Transparent, colourless material that turns into plastic when heated and is derived from the polymerization of propylene.

Polytechs :

Polytechs is an independent company whose main activity is the toll compounding of compounds, master-batches and compacted additive blends for producers of polymers and converters. In addition to this specific activity, Polytechs also produces and markets a wide range of additive master-batches.


REACH is the regulatory authority that deals with the registration, evaluation, authorisation and restriction of chemical substances.

Toll Compounding:

Work carried out by a service provider on a raw material supplied by the sponsor (dealer).

Polytechs : Zone Industrielle de la Gare, BP 14, 76450 Cany Barville, France - Tél. : +33 (0)2 35 57 81 82. Fax : + 33 (0)2 35 57 81 95