With more than forty years of experience in the design and manufacture of foil stamping machines, BOBST has constantly been at the forefront of advances in this technology. From the BOBST SP 1260 BM of the 1960's, through to today’s highly sophisticated equipment, flat bed BOBST presses and the rotary lines from BOBST's Steuer range have pushed forward the boundaries of the hot foil stamping process.
Thanks to intensive research and development, the knowledge and experience of BOBST staff, and constant attention to the views and needs of our users, this development continues today.
Paper is a fibre-based material produced from wood, rags or organic material. The types of paper used in the packaging and graphic arts industries typically use wood and/or recycled paper and board, which is then chemically or mechanically processed to produce cellulose pulp. This pulp is bleached and processed in a paper making machine to produce reels of paper which may optionally be coated or finished to provide a better surface and/or improved visual appearance.
Paper may be between 0.07 mm and 0.18mm thick, with paper for printing and packaging applications generally being in a range between 60 and 120 gsm. The crossover point between paper and board is normally considered to be around 160 grams per square meter (gsm), as it is only at this level that a fibrous material is likely to be stiff and rigid enough to make a container.
Paper has a wide range of industrial applications including use for the packaging of products as diverse as confectionery and cigarettes, as a component in packaging laminates, and for many commercial print uses.
Carton board (also called cardboard, paperboard or solid board) is the name for a range of paper based materials that includes folding box board (FBB, GC or UC), solid bleached board (SBB, SBS, or GZ), solid unbleached board (SUB or SUS), white lined chipboards (WLC, GD, GT, or UD), some unlined chipboards, and certain laminated boards.
To manufacture carton board, fibrous material, either from trees, recycled paper, or a mixture of the two, is turned into pulp. It is then bleached and processed in a board making machine to create a board consisting of one or more layers, which may optionally be coated to provide a better surface and/or improved visual appearance.
The crossover point between paper and board is normally considered to be around 160 grams per square meter (gsm), as it is only at this level that a fibrous material is likely to be stiff and rigid enough to make a container.
Cartonboard is primarily used in the packaging industry to produce all types of folding cartons, but may also be used for graphics applications. For folding cartons the board used will normally be in the range 200 to 600gsm, or 350 to 800 microns.
Heavy solid board is a type of carton board with a high basis weight.
To manufacture heavy solid board, fibrous material, either from trees, recycled paper, or a mixture of the two, is turned into pulp. It is then bleached and processed in a board making machine to create a board consisting of one or more layers, which may optionally be coated to provide a better surface and/or improved visual appearance. The resulting board will normally be heavier than 1000 grams per square meter (gsm).
Heavy solid board is primarily used in the packaging industry for applications where a high level of mechanical strength is required, such as trays for meat products or puzzle.
Today’s converters have a wide choice of plastic materials available, including products such as Polypropylene (PP), Polyethylene (PE), Polyvinylchloride (PVC), Polyesterterephtalate (PET), and more recently, Polylactic acid (PLA) which is made from renewable sources.
For some years there has been a level of transition by packaging specifiers from traditional cardboard to plastics, particularly in the area of cosmetic and luxury packaging.
One of the major benefits of plastic packaging is to be found in its high “performance/weight” ratio, its lightness (which enables savings in transportation), and its high calorific value which improves its efficiency of incineration.
Transparent and semi-transparent packaging tends to be associated with luxury or high added-value products, and the versatility and design flexibility that plastics offer can give life to packaging that will stand out among rival products.
The movement toward these materials has been driven by the specific features and benefits which plastics bring to high-end packaging applications, including:
- allowing the customer to see the product inside and to check the contents easily
- specialized effects with full or partial visibility
- glossy finishes that add interest to the package
- moisture resistance
- excellent coloring ability
- good folding and die-cutting properties