glue

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Glues (of medium high German LIM "glue" such as " clay ", medium high German glue to a root Indo- managerial , "slimy", duly) are aqueous solutions of adhesives . According to a more recent definition ( DIN 16921), it can be solutions of animal, vegetable or synthetic raw materials in water.

In the past, glues were referred to as adhesives based on organic substances, including the glutin glue obtained from hides and bones (e.g. bone glue, hide glue, horn glue made from antlers , in the Middle Ages e.g. made from deer antlers or horns ), and those made from Casein glues made from milk protein (e.g. quark glue). Now was by normalizing the original term of glue as an adhesive on the basis of animal proteins in vegetable ( paste ) and synthetic adhesives expanded.

Glues are products that are used to join materials such as wood or paper, etc. A distinction is made between natural glues with proteins, starch, dextrins or vegetable gum base materials and synthetic glues with polycondensates and polymers as the base material. Glues are of great importance in the wood, textile and paper industries.

use

Model builders gluing cardboard structures

Depending on their intended use, glues are further divided into wood glue , paper glue , wallpaper paste , etc.

  • In the Middle Ages it was the craft of the bird catcher (bird catcher) to catch small birds with liming rods ( bird glue ). Branches about 20 to 30 cm long were coated with strong glue (mostly waterproof "wazzerlîm"). The birds were lured with berries and fruits and got caught in the sticky branches. From this, the German idioms “get on someone's glue” and “glue someone” emerged. Around 1400, the oldest German-language manual for glue production was created in the East Central German- speaking area.
  • Glue rings are still tied around fruit trees today to catch insects crawling up the trunk.

See also

Individual evidence

  1. ^ Friedrich Kluge , Alfred Götze : Etymological dictionary of the German language . 20th edition. Edited by Walther Mitzka . De Gruyter, Berlin / New York 1967; Reprint (“21st unchanged edition”) ibid 1975, ISBN 3-11-005709-3 , pp. 431 and 434.
  2. ^ Franz Maria Feldhaus : The technology. A lexicon of prehistoric times, historical times and primitive peoples. Reprint of the 1914 edition, 2nd edition Munich 1965 (with the addition of later original contributions by the author), new print Munich 1970, p. 616.
  3. ^ Emil Ploß: The oldest German glue booklet. In: The BASF. Volume 7, Issue 5/6, 1957, pp. 187-190.
  4. ↑ Gundolf Keil : 'Leimbüchlein'. In: Author's Lexicon . 2nd ed., Volume 5, Col. 683 f.