Adhesive tape is one of many varieties of backing materials coated with an adhesive. Several types of adhesives can be used.
Pressure-sensitive adhesive, a key component of adhesive tape, was first developed in 1845 by Dr. Horace Day, a surgeon. In 1901, the German Oscar Troplowitz invented an adhesive patch called Leukoplast for the German company Beiersdorf AG.
- Main article: Pressure-sensitive tape
Pressure-sensitive tape, PSA tape, self-stick tape or sticky tape consists of a pressure-sensitive adhesive coated onto a backing material such as paper, plastic film, cloth, or metal foil. It is sticky (tacky) without any heat or solvent for activation and adheres with light pressure. These tapes usually require a release agent on their backing or a release liner to cover the adhesive. Sometimes, the term "adhesive tape" is used for these tapes.
Water activated tapeEdit
A specific type of gummed tape is called reinforced gummed tape (RGT). The backing of this reinforced tape consists of two layers of paper with a cross-pattern of fiberglass filaments laminated between. The laminating adhesive had previously been asphalt but now is more commonly a hot-melt atactic polypropylene.
Water activated tape is used for closing and sealing boxes. Before closing corrugated fiberboard boxes, the tape is wetted or remoistened, activated by water. The tape is mostly 3 inch or 7,5 cm wide.
Heat sensitive tapeEdit
Heat activated tape is usually tack-free until it is activated by a heat source. It is sometimes used in packaging, for example, a tear strip tape for cigarette packs. Conversely, thermal release tape, such as REVALPHA by Nitto Denko, loses its tack and fully releases when heated to a certain temperature. This is particularly useful in the semiconductor industry.
- ↑ http://www.aip.org.au/info/sites/default/files/cmm/2009/p22.pdf
- ↑ http://pages.towson.edu/ladon/wg/candywww.htm
- ↑ Journal of the American Institute for Conservation, By Merrily A. Smith, Norvell M. M. Jones, II, Susan L. Page and Marian Peck Dirda;JAIC 1984, Volume 23, Number 2, Article 3 (pp. 101 to 113)
- ↑ http://www.astm.org/Standards/D5749.htm ASTM D5749 - 01(2006) Standard Specification for Reinforced and Plain Gummed Tape for Sealing and Securing
- ↑ Template:Cite book