{"id":88676,"date":"2023-09-14T06:00:20","date_gmt":"2023-09-14T04:00:20","guid":{"rendered":"https:\/\/botland.com.pl\/blog\/petg-co-to-jest-wlasciwosci-i-szkodliwosc\/"},"modified":"2026-04-08T11:06:22","modified_gmt":"2026-04-08T09:06:22","slug":"co-je-to-petg-vlastnosti-a-skodlivost","status":"publish","type":"post","link":"https:\/\/botland.cz\/blog\/co-je-to-petg-vlastnosti-a-skodlivost\/","title":{"rendered":"Co je to PETG? Vlastnosti a \u0161kodlivost"},"content":{"rendered":"\u010cas \u010dten\u00ed:<\/span> 4<\/span> min.<\/span><\/span>\t\t
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Filamenty PET-G<\/strong><\/a> maj\u00ed v\u00fdznamn\u00fd pod\u00edl na trhu spot\u0159ebn\u00edho materi\u00e1lu pro 3D tisk\u00e1rny. Stoj\u00ed za to se sezn\u00e1mit s jejich v\u00fdhodami a s t\u00edm, jak je spr\u00e1vn\u011b pou\u017e\u00edvat p\u0159i ka\u017edodenn\u00edm tisku. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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PET-G - kl\u00ed\u010dov\u00e9 informace<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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PET-G<\/strong> je zkratka<\/strong> pro polyethylentereftal\u00e1t modifikovan\u00fd glykolem, co\u017e v pol\u0161tin\u011b znamen\u00e1 poly(etylentereftal\u00e1t) dopovan\u00fd glykolem. Filamenty PETG<\/strong><\/a> spojuj\u00ed pevnost a pru\u017enost<\/strong> polyethylentereftal\u00e1tu (tj. “\u010dist\u00e9ho” PET, zn\u00e1m\u00e9ho nap\u0159\u00edklad z jednor\u00e1zov\u00fdch n\u00e1pojov\u00fdch lahv\u00ed) s pru\u017enost\u00ed a sn\u00ed\u017eenou n\u00e1chylnost\u00ed k zak\u0159iven\u00ed – pr\u00e1v\u011b p\u0159\u00eddavek glykolu je zodpov\u011bdn\u00fd za posledn\u011b jmenovan\u00e9 v\u00fdhody. Tisk s PET-G<\/a><\/strong> je st\u00e1le obl\u00edben\u011bj\u0161\u00ed, zejm\u00e9na mezi u\u017eivateli, kte\u0159\u00ed hledaj\u00ed um\u011bl\u00e9 hmoty s vy\u0161\u0161\u00ed mechanickou pevnost\u00ed ve srovn\u00e1n\u00ed s plasty PLA<\/strong> <\/a>(polylaktidu), ale cht\u011bj\u00ed se vyhnout obt\u00ed\u017e\u00edm spojen\u00fdm s tiskem z n\u00e1ro\u010dn\u011bj\u0161\u00edch materi\u00e1l\u016f, jako je ABS. ABS<\/strong><\/a>, ASA<\/strong><\/a> nebo . Nylon<\/strong><\/a>. <\/p>\n

Materi\u00e1l je odoln\u00fd proti n\u00e1razu<\/strong> a vykazuje dobrou pru\u017enost,<\/strong> tak\u017ee je ide\u00e1ln\u00ed nap\u0159\u00edklad pro d\u00edly, kter\u00e9 mus\u00ed odol\u00e1vat opakovan\u00e9mu mechanick\u00e9mu zat\u00ed\u017een\u00ed<\/strong>. Filament PET-G je tak\u00e9 odoln\u00fd v\u016f\u010di vod\u011b<\/strong> a mnoha chemik\u00e1li\u00edm,<\/strong> co\u017e roz\u0161i\u0159uje jeho mo\u017enosti pou\u017eit\u00ed nap\u0159\u00edklad o r\u016fzn\u00e9 d\u00edly, kter\u00e9 pracuj\u00ed venku (dobr\u00fdm p\u0159\u00edkladem jsou pr\u016fzkumn\u00e9 mobiln\u00ed roboty). <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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PET-G<\/strong> je pova\u017eov\u00e1n za materi\u00e1l s vynikaj\u00edc\u00ed p\u0159ilnavost\u00ed vrstev,<\/strong> co\u017e znamen\u00e1, \u017ee se vrstvy materi\u00e1lu velmi dob\u0159e spojuj\u00ed a poskytuj\u00ed pevn\u00e9 a robustn\u00ed v\u00fdtisky. Tato v\u00fdhoda je d\u016fle\u017eit\u00e1 i pro t\u011bsnost st\u011bn d\u00edlu, tak\u017ee – p\u0159i spr\u00e1vn\u00e9m nastaven\u00ed \u0159eza\u010dky – lze z PETG tisknout i n\u00e1doby na vodu, a\u010dkoli se n\u011bkter\u00fdm u\u017eivatel\u016fm poda\u0159ilo vytvo\u0159it… mal\u00e9 vzduchov\u00e9 n\u00e1dr\u017ee! D\u016fle\u017eit\u00e9 je, \u017ee polyethylentereftal\u00e1tov\u00fd kopolymer si zachov\u00e1v\u00e1 tak\u00e9 vynikaj\u00edc\u00ed pr\u016fhlednost<\/strong> (na trhu jsou k dispozici filamenty se vzhledem p\u0159ipom\u00ednaj\u00edc\u00edm \u010dir\u00e9 nebo t\u00f3novan\u00e9 sklo), tak\u017ee tento materi\u00e1l je ide\u00e1ln\u00ed pro v\u00fdrobu kryt\u016f, osv\u011btlen\u00ed nebo architektonick\u00fdch maket, kter\u00e9 maj\u00ed imitovat sklen\u011bn\u00e9 vitr\u00edny. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Devil Design PETG 1,75 mm 1kg filament - White.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tPOD\u00cdVEJTE SE NA<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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V\u00fdtisky z PET-G v\u0161ak mohou b\u00fdt ve srovn\u00e1n\u00ed s jin\u00fdmi materi\u00e1ly, jako je PLA, o n\u011bco m\u00e9n\u011b detailn\u00ed,<\/strong> a to kv\u016fli vy\u0161\u0161\u00ed teplot\u011b tisku a tendenci plastu “vyt\u00e9kat” z trysky hotendu. Doty\u010dn\u00fd filament tak\u00e9 vy\u017eaduje vhodnou konfiguraci 3D tisk\u00e1rny<\/a><\/strong> pro udr\u017een\u00ed vy\u0161\u0161\u00ed teploty tisku, obvykle mezi 220 a 250 oC, a \u0159\u00e1dn\u011b p\u0159ipraven\u00fd povrch tiskov\u00e9ho stolu. <\/p>\n

Navzdory t\u011bmto probl\u00e9m\u016fm je PET-G vysoce univerz\u00e1ln\u00ed materi\u00e1l pro 3D tisk, kter\u00fd nab\u00edz\u00ed jedine\u010dnou kombinaci pevnosti, pru\u017enosti a estetiky<\/strong>. To z n\u011bj \u010din\u00ed ide\u00e1ln\u00ed volbu pro profesion\u00e1ln\u00ed u\u017eivatele, a\u010dkoli jeho relativn\u00ed snadnost tisku znamen\u00e1, \u017ee si rychle na\u0161el cestu i pod p\u0159\u00edslove\u010dnou st\u0159echu – do amat\u00e9rsk\u00fdch d\u00edlen i \u0161koln\u00edch a univerzitn\u00edch laborato\u0159\u00ed. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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PET a PET nen\u00ed to sam\u00e9, jin\u00fdmi slovy... p\u0159ezkoum\u00e1n\u00ed dokumentace v\u00fdrobce<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Devil Design PETG 1,75 mm 1kg filament - \u010dern\u00fd.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tPOD\u00cdVEJTE SE NA<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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Jako p\u0159\u00edklad \u0161pi\u010dkov\u00e9ho filamentu PET-G si “vezmeme do d\u00edlny” materi\u00e1l, kter\u00fd nab\u00edz\u00ed polsk\u00e1 zna\u010dka. Devil Design<\/strong><\/a>. Ve v\u011bt\u0161in\u011b FDM\/FFF tisk\u00e1ren na sou\u010dasn\u00e9m trhu jsou hlavice<\/strong> a extrud\u00e9r<\/strong> p\u0159izp\u016fsobeny filament\u016fm o jmenovit\u00e9m pr\u016fm\u011bru 1,75 mm<\/strong> – v p\u0159\u00edpad\u011b v\u00fdrobk\u016f Devil Design<\/strong> je tento rozm\u011br dodr\u017een s toleranc\u00ed +\/- 0,05 mm (50 mikrometr\u016f!), zat\u00edmco zaoblen\u00ed – s toleranc\u00ed +\/- 0,02 mm (20 um). Rozm\u011brov\u00e1 stabilita je kl\u00ed\u010dov\u00e1 pro zaji\u0161t\u011bn\u00ed rovnom\u011brn\u00e9ho vytla\u010dov\u00e1n\u00ed materi\u00e1lu a minimalizaci rizika ucp\u00e1n\u00ed uvnit\u0159 trysky, co\u017e se prom\u00edt\u00e1 do vysok\u00e9 kvality v\u00fdtisk\u016f. Prodejn\u00ed jednotkou popsan\u00fdch filament\u016f je 1 kg role, co\u017e p\u0159edstavuje p\u0159ibli\u017en\u011b 335 metr\u016f filamentu – takov\u00e9 mno\u017estv\u00ed je dostate\u010dn\u00e9 pro dlouhodob\u00e9 tiskov\u00e9 relace bez nutnosti \u010dast\u00e9 v\u00fdm\u011bny role p\u0159i v\u00fdrob\u011b v\u011bt\u0161\u00edch detail\u016f. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Doporu\u010den\u00e1 teplota vytla\u010dov\u00e1n\u00ed pro filamenty PET-G spole\u010dnosti Devil Design je 220 a\u017e 250 \u00b0C<\/strong> a teplota tiskov\u00e9ho stolu by se m\u011bla pohybovat mezi 70 a 80<\/strong> \u00b0C<\/strong>. D\u016fle\u017eit\u00e9 je, \u017ee chlazen\u00ed tisku nen\u00ed nutn\u00e9, i kdy\u017e v mnoha p\u0159\u00edpadech pom\u016f\u017ee zlep\u0161it kvalitu “obt\u00ed\u017en\u011bj\u0161\u00edch” d\u00edl\u016f, jako jsou nap\u0159\u00edklad mosty. Zna\u010dka Devil Design vyr\u00e1b\u00ed PETG vl\u00e1kna v \u0159ad\u011b r\u016fzn\u00fdch barevn\u00fdch variant,<\/strong> od standardn\u00ed \u0161k\u00e1ly z\u00e1kladn\u00edch barev a\u017e po specializovan\u00e9 odst\u00edny pou\u017e\u00edvan\u00e9 um\u011blci nebo pr\u016fmyslov\u00fdmi design\u00e9ry. V\u00fdsledn\u00fd povrch detail\u016f m\u00e1 vysok\u00fd lesk a za zm\u00ednku stoj\u00ed tak\u00e9 velmi n\u00edzk\u00e9 tepeln\u00e9 smr\u0161\u0165ov\u00e1n\u00ed p\u0159i chladnut\u00ed v\u00fdtisk\u016f – d\u00edky n\u011bmu je zde z\u0159eteln\u011b omezen jev zvln\u011bn\u00ed hran (charakteristick\u00fd mimo jin\u00e9 pro ABS). <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Jsou filamenty PET-G \u0161kodliv\u00e9?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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R\u016fzn\u00e9 materi\u00e1ly pro 3D tisk se li\u0161\u00ed sv\u00fdm chemick\u00fdm slo\u017een\u00edm, co\u017e p\u0159\u00edmo ovliv\u0148uje potenci\u00e1ln\u00ed rizika spojen\u00e1 s jejich pou\u017e\u00edv\u00e1n\u00edm. U n\u011bkter\u00fdch materi\u00e1l\u016f mohou b\u00fdt v\u00fdpary uvol\u0148ovan\u00e9 p\u0159i tisku \u0161kodliv\u00e9 pro zdrav\u00ed u\u017eivatele (nebo t\u0159et\u00edch stran, nap\u0159. dom\u00e1cnost\u00ed) a dokonce i pro \u017eivotn\u00ed prost\u0159ed\u00ed. <\/p>\n

ABS<\/strong> (akrylonitril-butadien-styren) je toho dobr\u00fdm p\u0159\u00edkladem – a\u010dkoli jde o jedno z nej\u010dast\u011bji pou\u017e\u00edvan\u00fdch filament\u016f, p\u0159i tisku uvol\u0148uje styren<\/strong> – organickou chemickou slou\u010deninu, kter\u00e1 m\u016f\u017ee b\u00fdt podle mnoha studi\u00ed \u0161kodliv\u00e1 pro lidsk\u00e9 zdrav\u00ed. Styren je toti\u017e zn\u00e1m\u00fd sv\u00fdm \u0161tiplav\u00fdm chemick\u00fdm z\u00e1pachem a dlouhodob\u00e9 vystaven\u00ed jeho p\u016fsoben\u00ed m\u016f\u017ee v\u00e9st k podr\u00e1\u017ed\u011bn\u00ed d\u00fdchac\u00edch cest, o\u010d\u00ed a dokonce i k\u016f\u017ee. Na druh\u00e9 stran\u011b nylon,<\/strong> zn\u00e1m\u00fd tak\u00e9 jako polyamid, m\u016f\u017ee p\u0159i tisku (v d\u016fsledku zah\u0159\u00edv\u00e1n\u00ed na vysok\u00e9 teploty) uvol\u0148ovat kaprolaktam<\/strong> – chemickou slou\u010deninu, kter\u00e1 dr\u00e1\u017ed\u00ed o\u010di, k\u016f\u017ei a sliznice d\u00fdchac\u00edch cest. Podobn\u00e9 probl\u00e9my zp\u016fsobuje tak\u00e9 polykarbon\u00e1t<\/strong> (PC), kter\u00fd p\u0159i zah\u0159\u00edv\u00e1n\u00ed uvol\u0148uje toxick\u00fd fenol<\/strong>. Nejen to, ale tak\u00e9 filamenty obsahuj\u00edc\u00ed d\u0159evo<\/strong> nebo kov<\/strong> mohou b\u011bhem tisku uvol\u0148ovat jemn\u00e9 \u010d\u00e1stice t\u011bchto p\u0159\u00edm\u011bs\u00ed, jak bylo prok\u00e1z\u00e1no v mnoha v\u011bdeck\u00fdch studi\u00edch. A p\u0159esto\u017ee tato filamenty obvykle vykazuj\u00ed ni\u017e\u0161\u00ed \u00farove\u0148 \u0161kodliv\u00fdch emis\u00ed, dlouhodob\u00e9 vdechov\u00e1n\u00ed \u010d\u00e1stic (podobn\u011b jako nap\u0159\u00edklad m\u011bstsk\u00fd smog) m\u016f\u017ee rovn\u011b\u017e v\u00e9st k podr\u00e1\u017ed\u011bn\u00ed d\u00fdchac\u00edch cest. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Mezi v\u0161emi filamenty pou\u017e\u00edvan\u00fdmi v 3D FFF\/FDM tisk\u00e1rn\u00e1ch je PET-G jedn\u00edm z nejbezpe\u010dn\u011bj\u0161\u00edch materi\u00e1l\u016f<\/strong> (vedle PLA) z hlediska \u0161kodliv\u00fdch emis\u00ed. Polyethylenglykol tereftal\u00e1t, jak n\u00e1zev napov\u00edd\u00e1, je modifikac\u00ed polyethylentereftal\u00e1tu (PET), zn\u00e1m\u00e9ho z v\u00fdroby n\u00e1pojov\u00fdch lahv\u00ed, co\u017e samo o sob\u011b do jist\u00e9 m\u00edry dokazuje jeho bezpe\u010dnost. Je v\u0161ak t\u0159eba poznamenat, \u017ee vystaven\u00ed vysok\u00fdm teplot\u00e1m, a to i u polymeru, kter\u00fd je zcela \u0161etrn\u00fd k lidsk\u00e9mu t\u011blu (pokud se jedn\u00e1 o hotov\u00e9 d\u00edly, nap\u0159. n\u00e1doby na potraviny), m\u016f\u017ee n\u011bjak\u00fdm zp\u016fsobem zv\u00fd\u0161it expozici chemick\u00fdm v\u00fdpar\u016fm. A\u010dkoli PET-G s\u00e1m o sob\u011b neobsahuje \u0161kodliv\u00e9 l\u00e1tky, kter\u00e9 lze nal\u00e9zt v n\u011bkter\u00fdch typech plast\u016f, p\u0159i 3D tisku se m\u016f\u017ee uvol\u0148ovat mal\u00e9 mno\u017estv\u00ed \u0161kodliv\u00fdch slou\u010denin,<\/strong> jako je acetaldehyd a formaldehyd, a to zejm\u00e9na p\u0159i vy\u0161\u0161\u00edch teplot\u00e1ch. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Sada filament\u016f Spectrum PETG Premium 1,75 mm a 1,25 kg - 5 barev.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tPOD\u00cdVEJTE SE NA<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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U\u017eivatel\u00e9 3D tisk\u00e1rny<\/strong><\/a> \u010dasto popisuj\u00ed v\u00fdpary vych\u00e1zej\u00edc\u00ed z PET-G jako t\u00e9m\u011b\u0159 neznateln\u00e9 nebo se slab\u00fdm, lehce nasl\u00e1dl\u00fdm z\u00e1pachem. Proto se v\u017edy doporu\u010duje tisknout v dob\u0159e v\u011btran\u00e9 m\u00edstnosti<\/strong>. I kdy\u017e jsou emise n\u00edzk\u00e9, dlouhodob\u00e9 vystaven\u00ed jak\u00fdmkoli plastov\u00fdm v\u00fdpar\u016fm m\u016f\u017ee v\u00e9st k podr\u00e1\u017ed\u011bn\u00ed d\u00fdchac\u00edch cest nebo jin\u00fdm zdravotn\u00edm probl\u00e9m\u016fm, a to v z\u00e1vislosti na dob\u011b tisku, objemu m\u00edstnosti a individu\u00e1ln\u00ed citlivosti organismu \u010dlov\u011bka. <\/p>\n

D\u016fle\u017eit\u00e1 se ukazuje tak\u00e9 ot\u00e1zka likvidace odpadu, kter\u00fd vznik\u00e1 p\u0159i tisku s PET-G. Stejn\u011b jako v\u011bt\u0161ina um\u011bl\u00fdch hmot nen\u00ed bohu\u017eel ani tento filament biologicky rozlo\u017eiteln\u00fd a jeho nevhodn\u00e1 likvidace m\u016f\u017ee p\u0159edstavovat riziko pro \u017eivotn\u00ed prost\u0159ed\u00ed. Na druhou stranu je pln\u011b recyklovateln\u00e9, stejn\u011b jako standardn\u00ed PET lahve. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

PET-G filamenty maj\u00ed v\u00fdznamn\u00fd pod\u00edl na trhu spot\u0159ebn\u00edho materi\u00e1lu pro 3D tisk\u00e1rny. Stoj\u00ed za to se sezn\u00e1mit s jejich v\u00fdhodami a s t\u00edm, jak je spr\u00e1vn\u011b pou\u017e\u00edvat p\u0159i ka\u017edodenn\u00edm tisku. <\/p>\n","protected":false},"author":22,"featured_media":70139,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[559,549],"tags":[],"class_list":["post-88676","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-3d-tisk","category-kompendium-cs"],"acf":[],"yoast_head":"\nCo je to PETG? Vlastnosti a \u0161kodlivost - Botland<\/title>\n<meta name=\"description\" content=\"Chcete pou\u017e\u00edt PET-G p\u0159i 3D tisku? 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