Notice: Use of undefined constant SERVER_NAME - assumed 'SERVER_NAME' in /var/www/hosting/designcabinet.cz/index.php on line 33 Notice: Undefined index: debug in /var/www/hosting/designcabinet.cz/models/db.php on line 67 Notice: Undefined index: cachereset in /var/www/hosting/designcabinet.cz/models/db.php on line 79 Notice: Use of undefined constant SERVER_NAME - assumed 'SERVER_NAME' in /var/www/hosting/designcabinet.cz/application/controllers/IndexController.php on line 32 Metalický suchý zip „Metaklett“ | Design Cabinet CZ

Design Cabinet CZ

Metalický suchý zip „Metaklett“

1 Pred vyše 60 rokmi, keď sa švajčiarsky inžinier George de Mestral pokúšal odstrániť ostnaté plody zo srsti svojho psa po jednej z loveckých prechádzok, prišiel na prevratnú myšlienku. Podľa modelu, ktorý odpozoroval z prírody, vytvoril „suchý zip“ vytvorený z množstva malých háčikov a očiek, ktorý dostal názov „velcro“. Toto spájanie prostredníctvom háčikov a očiek je dnes bežnou záležitosťou v priemysle i domácnostiach. Užitočnosť tohto spoja však poväčšine stroskotá na nízkej hranici zaťaženia, zlej odolnosti voči teplotám či chemikáliám. Inštitút pre tvárnenie a odlievanie kovov na Technickej Univerzite v Mníchove (TUM) však vyvinul novú variantu spoja z pružinovej ocele „Metaklett“, v rámci projektu pod vedením profesora Hartmuta Hoffmanna. Rovnako ako pri suchom zipe sú to dva pásiky o hrúbke 2 mm, jeden s háčikmi a druhý s očkami. Tento spoj je odolný voči chemickým látkam a dokáže odolať zaťaženiu do veľkosti 35 ton/m2 pri teplotách do 800°C. Háčiky z pružnej ocele sa prirodzene deformujú už pri malom tlaku čím prirodzene vkĺznu do otvorov v protiľahlom perforovanom pásiku. V tejto polohe fungujú ako rozpínavý nit, ktorý bráni spätnému vytiahnutiu. Po zložitom testovacom procese, inštitút vytvoril dve variácie: „Entenkopf“ a „Flamingo“, keďže forma háčikov môže tak trochu pripomínať hlavu kačky a plameniaka stojaceho na jednej nohe. Entenkopf používa jemné oceľové háčiky a očká, zatiaľ čo Flamingo má širšie háčiky, ktoré sa zachytávajú do protiľahlých otvorov. V závislosti od smeru vyvinutého tlaku, tento spoj dokáže zniesť zaťaženie 7-35 Newton/m2. fotky: 1. „Flamingo“ (zdroj TUM) 2. Detail „Entenkopf“ (zdroj TUM) Ivana Lenčáková Zdroj: designboom.com 14. 2. 2010

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Naši partneři:

  • Česká Stavební Akademie
  • Slovenské centrum dizajnu
  • Nadace pro rozvoj architektury a stavitelství
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