Лако-красочные материалы — производство

In this section, a guide is given to indicate the performance of several different adhesives for a selection of thermoplastics. The bulk of this information was taken from ‘The Loctite Design Guide for Bonding Plastics’ [2] issued by Henkel Ltd and for more detailed information the reader should refer to this guide. An adhesive cannot […]

Semi-crystalline polymers are plastics that contain areas of both crystalline molecular structure and amorphous regions as well (Figure 2.3). The degree of crystallisation depends on the chemical structure (generic type), the rate of cooling and the thermal history in the post-moulded state. Very rapid cooling in thin sections can result in insignificant levels of crystallisation […]

Plastics that can be repeatedly solidified from the melt state without significant crystallisation are described as amorphous thermoplastics. Amorphous thermoplastics have long macromolecule chains which are highly entangled with large side chains (Figure 2.2). Amorphous thermoplastics are frequently used in applications where clarity is important and in applications where they may be thermo-processed (e. g., […]

2.1 Introduction The annual consumption of engineering plastics continues to grow [1] and the commodity plastics (polyethylene, polypropylene, poly(vinyl chloride) (PVC) and polystyrene) make up approximately 75% of the total consumption. These commodity plastics are widely used in the packaging industry and in the building/ construction industries (water pipes, vessels, guttering, road cones). Engineering plastics […]

2.1 Introduction The annual consumption of engineering plastics continues to grow [1] and the commodity plastics (polyethylene, polypropylene, poly(vinyl chloride) (PVC) and polystyrene) make up approximately 75% of the total consumption. These commodity plastics are widely used in the packaging industry and in the building/ construction industries (water pipes, vessels, guttering, road cones). Engineering plastics […]

Reactive hot melts are single-component adhesives that are applied in the molten form (like conventional hot-melt adhesives) but have an additional secondary cure with atmospheric moisture to give a crosslinked polymer. Reactive hot melts will give almost instant fixture strength as the hot melt solidifies and over the next few days will increase in strength […]

Reactive hot melts are single-component adhesives that are applied in the molten form (like conventional hot-melt adhesives) but have an additional secondary cure with atmospheric moisture to give a crosslinked polymer. Reactive hot melts will give almost instant fixture strength as the hot melt solidifies and over the next few days will increase in strength […]

Hot melts were introduced into the market many years ago and are widely used in the packaging, labelling, woodworking and bookbinding industries but are also used for bonding plastics. Hot melts are 100% solid single-component adhesives that are applied in a molten state and solidify by cooling. They do not contain any carrier material (e. […]

Hot melts were introduced into the market many years ago and are widely used in the packaging, labelling, woodworking and bookbinding industries but are also used for bonding plastics. Hot melts are 100% solid single-component adhesives that are applied in a molten state and solidify by cooling. They do not contain any carrier material (e. […]

Modified silanes (MS) are odourless, non-corrosive and do not contain isocyanates, solvents, silicones or PVC. They are normally available as single-component adhesive sealants (although two-part systems are also available) and require atmospheric moisture during the cure cycle. When fully cured they are a flexible elastomeric product with excellent adhesion properties to a wide range of […]