Лако-красочные материалы — производство

Adhesives are used widely not only in the manufacture but also in the filling of packaging material. A pivotal requirement here is the secure closing of packages, especially as a tamper-evident closure. 8.5.3.1 Setting-Up a Tray Hot-melt adhesives with extremely short setting times are generally used for the setting-up of trays (Figure 8.27). The majority […]

Many articles for daily use are packed in bags, pouches and sacks. For this, special adhesives have been developed for manifold applications (e. g. side-seam bonding, bottom pasting, partial lamination), ranging from simple paper bags that are still bonded with starch-based adhesives to elaborate pouch designs bonded with disper­sion adhesives or hot melts. Depending on […]

Plastic materials, particularly plastic films that are converted into flexible packages, are becoming increasingly popular in the packaging sector. Flexible packages are manufactured from monofilm or, more often, from multi­layer film made from different plastic films or from combinations of plastic films, metal foils or paper. The underlying principle is the combination of materials with […]

In the retail package sector, folding cartons are the most popular product. These are manufactured by bonding folded paperboard using plasticized polyvinyl acetate homopolymer based or ethylene vinyl acetate (EVA) copolymer-based dispersion adhesives (side-seam bonding), thereby converting flat sheets into boxes. Very often, the package material must be sales-promotional, and so the folding cartons need […]

Corrugated board is used for outer package or transport package purposes after having been transformed into containers by means ofso-called ‘folder gluers’ which glue folded sheets of corrugated board to convert them into boxes using plasticized polyvinyl acetate homopolymer based dispersion adhesives (side-seam gluer). On modern machine tools, the adhesive is applied by means of […]

Lamination is an important field of application in the further processing of corru­gated board and carton paper. For this purpose, plasticized polyvinyl acetate homo­polymer-based dispersion adhesives are normally used. Special flatness and proper­ties which provide for a high punching speed are important requirements for lamination. As this application is relatively simple, the price of the […]

On a quantity basis, the most important paper product bonded with adhesives is corrugated board (Figure 8.23), which is a very important material for the production of shipping containers. The development of the corrugated board industry began in 1874 when a patent was issued in England describing the bonding of a flat linerboard to a […]

Adhesives have always been a decisive factor in the manufacture of packaging materials made from paper, board or cardboard, or even from plastics or other materials. At the start of the 20th century, paper — a natural product — was bonded with adhesives based on natural raw materials such as proteins, starch or cellulose (see […]

8.5.1 Introduction Paper, board and cardboard are important materials for many daily life products, with their frequent use in the manufacture of packaging materials and graphic products, for example. Packaging materials are essential for the handling, safe distribution, warehousing and storage of the magnitude and multitude of modern goods. Marketing aspects are an increasingly important […]

In modern wood construction, not only girders are prefabricated by means of laminated wood technology, but also various other elements including stairs, windows, doors, whole attic storeys and walls. The motivation for using prefabrica­tion technology has been described in the above section. Figure 8.21 shows the fabrication of a stair string where the laminated veneer […]