{"id":5200,"date":"2026-10-12T17:16:07","date_gmt":"2026-10-12T15:16:07","guid":{"rendered":"https:\/\/hamco-germany.com\/?post_type=fachbegriff&p=5200"},"modified":"2026-10-12T17:16:41","modified_gmt":"2026-10-12T15:16:41","slug":"tvrdost-podle-shore-a","status":"publish","type":"fachbegriff","link":"https:\/\/hamco-germany.com\/cs\/fachbegriff\/haerte-nach-shore-a\/","title":{"rendered":"Tvrdost podle Shore A"},"content":{"rendered":"

Kdy\u017e se prodej propad\u00e1<\/h2>\n

Zahradn\u00ed ve\u010d\u00edrek se vyda\u0159il na v\u00fdbornou. Sv\u00edtilo slunce, host\u00e9 byli v dobr\u00e9 n\u00e1lad\u011b a jedna d\u00e1ma se v elegantn\u00edch bot\u00e1ch na podpatc\u00edch proch\u00e1zela po upraven\u00e9m zelen\u00e9m tr\u00e1vn\u00edku. S t\u00edm, \u017ee se jej\u00ed podpatky p\u0159i ch\u016fzi trochu bo\u0159\u00ed, po\u010d\u00edtala. Koneckonc\u016f se necht\u011bla vzd\u00e1t sv\u00e9ho stylov\u00e9ho vystoupen\u00ed.<\/p>\n

Pak ale p\u0159i\u0161el d\u00e9\u0161\u0165, kr\u00e1tk\u00fd a intenzivn\u00ed. P\u00e1rty se na chv\u00edli p\u0159esunula dovnit\u0159.<\/p>\n

De\u0161\u0165ov\u00e1 p\u0159eh\u00e1\u0148ka p\u0159\u00edjemn\u011b ochladila vzduch. Pan\u00ed se rozhodla t\u00e9to p\u0159\u00edle\u017eitosti vyu\u017e\u00edt a znovu vy\u0161la do zahrady.<\/p>\n

S \u010d\u00edm v\u0161ak nepo\u010d\u00edtala: tr\u00e1vn\u00edk byl kv\u016fli de\u0161ti v\u00fdrazn\u011b m\u011bk\u010d\u00ed. Jej\u00ed podpatky se nyn\u00ed bo\u0159ily mnohem hloub\u011bji ne\u017e p\u0159edt\u00edm a jej\u00ed elegantn\u00ed ch\u016fze m\u00e1lem skon\u010dila necht\u011bn\u00fdm p\u00e1dem.<\/p>\n

Stejn\u00e1 podr\u00e1\u017eka, stejn\u00e1 s\u00edla tlaku, stejn\u00fd povrch \u2013 ale jin\u00e1 hloubka proniknut\u00ed.<\/strong><\/p>\n

Co to m\u00e1 spole\u010dn\u00e9ho s m\u011bkk\u00fdmi, pru\u017en\u00fdmi plasty?<\/h3>\n

U m\u011bkk\u00fdch, pru\u017en\u00fdch materi\u00e1l\u016f lze tvrdost ur\u010dit pomoc\u00ed normalizovan\u00e9ho penetra\u010dn\u00edho t\u011blesa. U m\u011bkk\u00fdch PVC materi\u00e1l\u016f Covytec\u00ae uv\u00e1d\u00ed v\u00fdrobce plastisolu jako normu DIN ISO 48-4.<\/p>\n

P\u0159i zkou\u0161ce podle Shore A se na povrch materi\u00e1lu p\u0159itla\u010duje normalizovan\u00fd penetra\u010dn\u00ed t\u011bleso z kalen\u00e9 oceli s p\u0159edepsanou zku\u0161ebn\u00ed silou. M\u00e1 tvar mal\u00e9ho, zplo\u0161t\u011bl\u00e9ho ku\u017eele s ploch\u00fdm hrotem o pr\u016fm\u011bru pouh\u00fdch asi 0,8 mm. \u010c\u00edm hloub\u011bji do materi\u00e1lu pronikne, t\u00edm ni\u017e\u0161\u00ed je nam\u011b\u0159en\u00e1 hodnota tvrdosti podle Shore A.<\/p>\n

I termoplastick\u00e9 elastomery (TPE) lze zpracov\u00e1vat v r\u016fzn\u00fdch stupn\u00edch tvrdosti. D\u00edky tomu lze vlastnosti pru\u017en\u00e9ho plastov\u00e9ho d\u00edlu c\u00edlen\u011b p\u0159izp\u016fsobit jeho pou\u017eit\u00ed.<\/p>\n

A\u0165 u\u017e jde o jehlov\u00fd podpatek nebo standardizovan\u00fd penetra\u010dn\u00ed t\u011bleso \u2013 jak hluboko se pono\u0159\u00ed, z\u00e1vis\u00ed na tom, jak moc podklad podl\u00e9h\u00e1.<\/p>","protected":false},"featured_media":5201,"parent":0,"template":"","class_list":["post-5200","fachbegriff","type-fachbegriff","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/fachbegriff\/5200","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\/5201"}],"wp:attachment":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/media?parent=5200"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}