Лако-красочные материалы — производство

Marine bivalve mollusks are probably the most studied adhesive marine organisms. Their adhesive capacity is advantageous, because it allows mollusks to exploit nutrient-rich turbulent zones of the sea. Oysters are permanently fixed to the substrate by secretion of cement glands (see Figure 8.82), whereas byssated mollusks adhere but are not necessarily permanently attached. They are […]

Many marine organisms are able to secrete glues, which can act in aquatic environ­ment (Figure 8.82 and Table 8.10). Flatworms (turbellarians), annelids and gastro — trichs (worm-like animals) use glandular organs composed of three cell types: two distinct gland types and specialized epidermal cells for secretion discharge (Figure 8.82) [86]. The dual function of these […]

8.16.1 Design Principles of Biological Attachment Devices In Nature, attachment devices serve as functional systems, the purpose of which is either temporary or permanent mechanical attachment of an organism to a substrate surface, to another organism, or the temporary interconnection of body parts within an organism. Many species of animals and plants are supplied with […]

In dental treatment, adhesives are in permanent contact with the human body. The methacrylate adhesives which are used as filling materials set rapidly under the effect of light, which is the only setting procedure suited to this field of application. Glass ionomer cements also set under the effect of light, and are used for orthodontic […]

Self-adhesive products such as ‘band-aids’ are the most ancient and popular applica­tions of adhesives in the medical sector. PSA tapes come into contact with the human body for several days, while acrylic spray-on adhesives are widely used on cleansed wounds where they replace band-aids. Newly developed transparent wound dressings made from polyurethane film and acrylic […]

Medical instruments or products with short-term contact include syringes, cannulas, catheters, valves, filters, respiratory masks, keyhole surgery instruments, endo­scopes and orthodontic aids. These are composed of very different materials that sometimes are difficult to bond, such as metal alloys of aluminum, medical steel, titanium, nickel (Nitinol), or plastics such as polyethylene (PE), polypropylene (PP), polyetheretherketone […]

In the medical sector, adhesives are used in a wide range of applications where they must meet the highest demands with regards to quality and reliability. Medical applications can be divided into three groups according to the period of contact between the medical device and the human body, namely short-term contact, contact for several days, […]

From TV crime thrillers, we are all familiar with the paper sealing labels that detectives use to secure doors against unauthorized opening. These are bonded to the door and the frame and will tear when the door is opened. More sensitive tamper-indicating labels which signal that the seal has been tampered with by an attempt […]

The bigger a building, the more options for eye-catching facade design. If a building is highly visible to thousands of people who drive past it every day, it can be converted into a spectacular billboard for promotions and outdoor advertising. Some years ago, a mammoth image featuring Edgar Davids, a Dutch soccer player, dominated the […]

A survey conducted by Infratest, Germany, has shown that traffic advertising reaches a target of 60% of the population. In this respect, mobile outdoor advertising is recognized as being highly effective, with 73% of drivers and passengers remem­bering it overall, and 31% remembering it in detail. The main target groups are buses and street or […]