{"id":4741,"date":"2026-08-26T17:08:25","date_gmt":"2026-08-26T15:08:25","guid":{"rendered":"https:\/\/hamco-germany.com\/?post_type=fachbegriff&p=4741"},"modified":"2026-09-04T12:48:18","modified_gmt":"2026-09-04T10:48:18","slug":"rozdily-v-tloustce-steny","status":"publish","type":"fachbegriff","link":"https:\/\/hamco-germany.com\/cs\/fachbegriff\/wanddickenunterschiede\/","title":{"rendered":"Rozlo\u017een\u00ed tlou\u0161\u0165ky st\u011bny u d\u00edl\u016f vyr\u00e1b\u011bn\u00fdch ponorem"},"content":{"rendered":"

Ani pala\u010dinka nen\u00ed v\u0161ude stejn\u011b tlust\u00e1<\/h2>\n

P\u0159edstavte si, \u017ee nal\u00e9v\u00e1te t\u011bsto na pala\u010dinky na rozp\u00e1lenou p\u00e1nev. A\u0165 u\u017e to zkus\u00edte jakkoli, t\u011bsto se nem\u016f\u017ee rozprost\u0159\u00edt po cel\u00e9 plo\u0161e p\u00e1nve najednou, a proto ani nem\u016f\u017ee m\u00edt v\u0161ude stejnou tlou\u0161\u0165ku. N\u011bkter\u00e9 \u010d\u00e1sti budou o n\u011bco siln\u011bj\u0161\u00ed, jin\u00e9 o n\u011bco ten\u010d\u00ed \u2013 jednodu\u0161e proto, \u017ee se t\u011bsto rozprost\u00edr\u00e1 s \u010dasov\u00fdm zpo\u017ed\u011bn\u00edm a mno\u017estv\u00ed zb\u00fdvaj\u00edc\u00edho t\u011bsta se postupn\u011b zmen\u0161uje.<\/p>\n

I tekut\u00e9 PVC se p\u0159i v\u00fdrob\u011b \u0159\u00edd\u00ed stejn\u00fdmi fyzik\u00e1ln\u00edmi z\u00e1kony.<\/p>\n

Rozd\u00edly v tlou\u0161\u0165ce st\u011bny<\/strong> p\u0159i procesu m\u00e1\u010den\u00ed v PVC jsou nevyhnuteln\u00e9 a pat\u0159\u00ed k typick\u00fdm vlastnostem tohoto v\u00fdrobn\u00edho postupu.<\/p>\n

To v\u0161ak v \u017e\u00e1dn\u00e9m p\u0159\u00edpad\u011b neznamen\u00e1, \u017ee by byl tento d\u00edl vadn\u00fd. Tlou\u0161\u0165ka st\u011bny je sp\u00ed\u0161e v\u00fdsledkem sou\u010dinnosti geometrie d\u00edlu, p\u0159enosu tepla, vlastnost\u00ed materi\u00e1lu a doby pono\u0159en\u00ed v l\u00e1zni.<\/p>\n

Zat\u00edmco jednoduch\u00e9, rota\u010dn\u011b symetrick\u00e9 ponorn\u00e9 d\u00edly maj\u00ed \u010dasto relativn\u011b rovnom\u011brn\u00e9 rozlo\u017een\u00ed tlou\u0161\u0165ky st\u011bny od uzav\u0159en\u00e9ho ke otev\u0159en\u00e9mu konci, slo\u017eit\u00e9 geometrie t\u00e9m\u011b\u0159 v\u017edy vykazuj\u00ed oblasti s v\u00fdrazn\u011b siln\u011bj\u0161\u00edmi a ten\u010d\u00edmi vrstvami materi\u00e1lu.<\/p>\n

Rozhoduj\u00edc\u00ed je Akumulace tepla v ponorn\u00e9m j\u00e1dru a doba zdr\u017een\u00ed v ponorn\u00e9 l\u00e1zni<\/strong>.<\/p>\n

Masivn\u00ed \u010d\u00e1sti ponorn\u00e9ho j\u00e1dra akumuluj\u00ed v\u00edce tepeln\u00e9 energie ne\u017e jemn\u00e9 \u010d\u00e1sti. D\u00edky tomu z\u016fst\u00e1v\u00e1 jejich povrch d\u00e9le hork\u00fd. PVC plastisol tam geluje po del\u0161\u00ed dobu a b\u011bhem doby zdr\u017een\u00ed v ponorn\u00e9 l\u00e1zni m\u016f\u017ee vytvo\u0159it siln\u011bj\u0161\u00ed vrstvu materi\u00e1lu.<\/p>\n

K tomu se p\u0159id\u00e1v\u00e1 tekutost PVC, kter\u00e9 je\u0161t\u011b nezgelovat\u011blo. Dokud materi\u00e1l po vyta\u017een\u00ed ponorn\u00e9ho j\u00e1dra zcela nezgelovat\u00ed v peci, m\u016f\u017ee se je\u0161t\u011b m\u00edrn\u011b posunout. Polom\u011bry, p\u0159echody, hrany a pr\u016f\u0159ezy r\u016fzn\u00e9 velikosti tento pohyb nav\u00edc ovliv\u0148uj\u00ed (viz tak\u00e9 Odtokov\u00e9 zna\u010dky a odtokov\u00e9 kapky<\/a>).<\/p>\n

Na v\u00fdslednou tlou\u0161\u0165ku st\u011bny m\u00e1 vliv tak\u00e9 viskozita PVC-plastisolu, teplota ponorn\u00e9ho j\u00e1dra a rychlost pono\u0159en\u00ed a vyta\u017een\u00ed.<\/p>\n

Proto plat\u00ed p\u0159i pot\u00e1p\u011b\u010dsk\u00e9m procesu s PVC jedna d\u016fle\u017eit\u00e1 z\u00e1sada:<\/p>\n

Tlou\u0161\u0165ka st\u011bny rota\u010dn\u011b symetrick\u00e9ho pono\u0159en\u00e9ho d\u00edlu, jako je kruhov\u00e1 \u010depi\u010dka nebo vlnovec, bude nejv\u011bt\u0161\u00ed v m\u00edst\u011b, kde se pono\u0159en\u00e9 j\u00e1dro jako prvn\u00ed dotkne plastisolu. Toto je tak\u00e9 m\u00edsto, kter\u00e9 je z m\u00e1\u010dec\u00ed l\u00e1zn\u011b vyta\u017eeno jako posledn\u00ed, a tud\u00ed\u017e v n\u00ed setrv\u00e1 nejd\u00e9le; ozna\u010duje se jako uzav\u0159en\u00fd konec m\u00e1\u010dec\u00ed \u010depice a nav\u00edc se zde projevuje zes\u00edlen\u00ed zp\u016fsoben\u00e9 odkap\u00e1vac\u00ed kapky<\/a> tvo\u0159\u00ed.<\/p>\n

U d\u00edl\u016f vyr\u00e1b\u011bn\u00fdch ponorn\u00fdm procesem nelze bez mechanick\u00e9ho dodate\u010dn\u00e9ho opracov\u00e1n\u00ed dos\u00e1hnout zcela identick\u00e9 tlou\u0161\u0165ky st\u011bn \u2013 a ve v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f to ani nen\u00ed nutn\u00e9.
\nMnohem d\u016fle\u017eit\u011bj\u0161\u00ed je rovnom\u011brn\u00e1 a reprodukovateln\u00e1 v\u00fdroba. Pr\u00e1v\u011b v tom spo\u010d\u00edv\u00e1 s\u00edla dob\u0159e zvl\u00e1dnut\u00e9ho procesu ponorn\u00e9ho lakov\u00e1n\u00ed: ka\u017ed\u00fd d\u00edl spolehliv\u011b spl\u0148uje po\u017eadavky na funk\u010dnost, ochranu a \u017eivotnost.<\/p>\n

Tlou\u0161\u0165ka st\u011bny ponorn\u00e9ho d\u00edlu je podobn\u00e1 jako u pala\u010dinky \u2013 nen\u00ed v\u0161ude stejn\u011b tlust\u00e1 ani stejn\u011b tenk\u00e1<\/p>\n

Tlou\u0161\u0165ka st\u011bny se od otev\u0159en\u00e9ho konce k uzav\u0159en\u00e9mu konci plynule zv\u011bt\u0161uje. \u00dapln\u011b naho\u0159e je odtokov\u00e1 kapka na uzav\u0159en\u00e9m konci vlnovce.<\/p>","protected":false},"featured_media":4742,"parent":0,"template":"","class_list":["post-4741","fachbegriff","type-fachbegriff","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/fachbegriff\/4741","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/fachbegriff"}],"about":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/types\/fachbegriff"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/media\/4742"}],"wp:attachment":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/media?parent=4741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}