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In 1977, the production of starch- and cellulose adhesives commenced and in 1990, these were followed by the first protein-based label adhesive. [4] Coca-Cola Deutschland, which was then based in Essen asked cph in 1990, to develop a special label adhesive for PET bottles. At this time the name of the company was changed to cph Deutschland GmbH.
The high tack material comprises about 95% of the adhesive and provides the majority of the adhesive's tackiness. [6] In addition to these 2 components, surfactants are often added to reduce the surface energy of the adhesive and facilitate adhesion to high surface energy substrates (metals, other polymeric materials). [ 11 ]
Pressure-sensitive tape or pressure-sensitive adhesive tape (PSA tape) is an adhesive tape that sticks when pressure is applied without the need for a solvent (such as water) or heat for activation. It is also known in various countries as self-stick tape , sticky tape , or just adhesive tape and tape , as well as genericized trademarks , such ...
In contrast, pressure-sensitive adhesives (PSAs) form a bond simply by the application of light pressure to marry the adhesive with the adherend. Pressure-sensitive adhesives are designed with a balance between flow and resistance to flow. The bond forms because the adhesive is soft enough to flow, or wet, the adherend.
Open time The working time to make a bond, where the surface still retains sufficient tack, can range from seconds for fast-setting HMAs to infinity for pressure-sensitive adhesives. Set time Time to form a bond of acceptable strength. Tack The degree of surface stickiness of the adhesive; influences the strength of the bond between wetted ...
Tackifiers are chemical compounds used in formulating adhesives to increase tack, the stickiness of the surface of the adhesive. [1] They are usually low-molecular weight compounds with high glass transition temperature. At low strain rate, they provide higher stress compliance [clarification needed], and become stiffer at higher strain rates.
Silicones are usually very thick (high viscosity), and must be vacuum degassed prior to pouring, to minimize bubble entrapment. If making a brush-on rubber mold, the curing time factor between coats is long (longer than urethanes or polysulfides, shorter than latex). Silicone components (A+B) must be mixed accurately by weight (scale required ...
The laminating adhesive had previously been asphalt but now is more commonly a hot-melt atactic polypropylene. Water-activated tape in a tape dispenser . Water-activated tape is used for closing and sealing boxes. Before closing corrugated fiberboard boxes, the tape is wetted or remoistened. Such tape is usually 3 inches (or 7.5 cm) wide.