![\"cnc\"](\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/cnc.webp\")
<\/figure>\n\n\n\nFr\u00e9zov\u00e1n\u00ed CNC je ve v\u00fdrob\u011b pru\u017en\u00fdch d\u00edl\u016f b\u011b\u017en\u00e9. Dal\u0161\u00ed mo\u017enost\u00ed je \u0159ez\u00e1n\u00ed laserem a vodn\u00edm paprskem. Lze je pou\u017e\u00edt k p\u0159\u00edprav\u011b nebo p\u0159ed\u0159ez\u00e1n\u00ed materi\u00e1lu v\u00fdztu\u017ee. U desek s v\u00fd\u0161kov\u00fdmi rozd\u00edly mohou proces zjednodu\u0161it metody \u0159ez\u00e1n\u00ed bez lisov\u00e1n\u00ed, jako je laser nebo vodn\u00ed paprsek. Sni\u017euj\u00ed tak\u00e9 n\u00e1klady, proto\u017ee nen\u00ed pot\u0159eba \u017e\u00e1dn\u00fd lisovac\u00ed n\u00e1stroj.<\/p>\n\n\n\n
2. Mechanick\u00e9 zpracov\u00e1n\u00ed v\u00fdztuh (lisov\u00e1n\u00ed \/ vysek\u00e1v\u00e1n\u00ed)<\/h2>\n\n\n\n2.1 Raz\u00edtkov\u00e1n\u00ed \/ vyst\u0159ihov\u00e1n\u00ed<\/h3>\n\n\n\n
Pokud se p\u0159i v\u00fdrob\u011b v\u00fdztu\u017ee pou\u017e\u00edv\u00e1 lisov\u00e1n\u00ed nebo vysek\u00e1v\u00e1n\u00ed do pletiva, jsou zapot\u0159eb\u00ed speci\u00e1ln\u00ed lisovac\u00ed formy. Po vyra\u017een\u00ed se odstran\u00ed ztvrdl\u00fd materi\u00e1l kolem d\u00edl\u016f a zb\u00fdvaj\u00edc\u00ed plech lze zatla\u010dit zp\u011bt do p\u016fvodn\u00ed polohy. Tato metoda je b\u011b\u017en\u00e1 pro levn\u00e9 tuh\u00e9 desky a pro velkoobjemovou mont\u00e1\u017e s pou\u017eit\u00edm jednoduch\u00fdch p\u0159\u00edpravk\u016f.<\/p>\n\n\n\n
2.2 Bodov\u00e1n\u00ed nebo \u010d\u00e1ste\u010dn\u00e9 \u0159ez\u00e1n\u00ed<\/h3>\n\n\n\n
Pokud to obrys flexy dovoluje, lze pou\u017e\u00edt n\u00e1stroje pro dr\u00e1\u017ekov\u00e1n\u00ed nebo \u010d\u00e1ste\u010dn\u00e9 \u0159ez\u00e1n\u00ed. Dr\u00e1\u017ekov\u00e1n\u00ed obvykle pro\u0159\u00edzne \u010d\u00e1st flexy nebo v\u00fdztuhy. Speci\u00e1ln\u00ed n\u00e1stroje kontroluj\u00ed hloubku \u0159ezu. Po um\u00edst\u011bn\u00ed d\u00edl\u016f a dokon\u010den\u00ed mont\u00e1\u017ee lze desku pod\u00e9l linie bodov\u00e1n\u00ed zlomit.<\/p>\n\n\n\n
V porovn\u00e1n\u00ed s fr\u00e9zov\u00e1n\u00edm kontur mus\u00ed v\u011bt\u0161ina ostatn\u00edch \u0159ezac\u00edch technik pro\u0159ezat cel\u00fd materi\u00e1l. Vzhledem k povaze mechanick\u00fdch fr\u00e9z jsou \u0159ezan\u00e9 tvary obvykle rovn\u00e9.<\/p>\n\n\n\n
3. Lepidla pro lepen\u00ed v\u00fdztuh<\/h2>\n\n\n\n
Lepidla pou\u017e\u00edvan\u00e1 k lepen\u00ed v\u00fdztuh na ohebn\u00e9 podklady se vyb\u00edraj\u00ed podle po\u017eadovan\u00e9 funkce. Krom\u011b standardn\u00edch lepidel pro flex existuj\u00ed i dal\u0161\u00ed typy lepidel. B\u011b\u017en\u00e9 typy lepidel na v\u00fdztuhy a jejich vlastnosti:<\/p>\n\n\n\n
3.1 Lepidlo citliv\u00e9 na tlak (PSA)<\/h3>\n\n\n\n
PSA se hojn\u011b pou\u017e\u00edv\u00e1 pro v\u00fdztuhy. Je flexibiln\u00ed a snadno se pou\u017e\u00edv\u00e1. Poskytuje dobrou pevnost spoje a v n\u011bkter\u00fdch p\u0159\u00edpadech m\u016f\u017ee zlep\u0161it trvanlivost. V\u011bt\u0161ina PSA nen\u00ed ur\u010dena pro dlouhodob\u00e9 pou\u017eit\u00ed p\u0159i vysok\u00fdch teplot\u00e1ch a obvykle sn\u00e1\u0161\u00ed pouze kr\u00e1tkodob\u00e9 vystaven\u00ed vysok\u00fdm teplot\u00e1m. P\u0159i bezolovnat\u00e9m p\u00e1jen\u00ed (vy\u0161\u0161\u00ed teploty p\u0159etaven\u00ed) zkontrolujte, zda PSA funguje v po\u017eadovan\u00e9m procesu. Zvl\u00e1\u0161tn\u00ed v\u00fdhodou PSA je, \u017ee umo\u017e\u0148uje p\u0159ilnut\u00ed flexy k t\u00e9m\u011b\u0159 jak\u00e9mukoli povrchu, tak\u017ee je mo\u017en\u00e9 mnoho konstrukc\u00ed vestav\u011bn\u00fdch v\u00fdztuh.<\/p>\n\n\n\n
3.2 Termosetov\u00e9 lepic\u00ed f\u00f3lie<\/h3>\n\n\n\n
Termosetov\u00e9 lepic\u00ed f\u00f3lie, n\u011bkdy naz\u00fdvan\u00e9 f\u00f3lie s akrylov\u00fdm povlakem nebo lepic\u00ed f\u00f3lie, mohou lepit v\u00fdztuhy a oh\u00fdbat se. Vy\u017eaduj\u00ed dal\u0161\u00ed kroky zpracov\u00e1n\u00ed a \u010das. P\u0159esto mohou termosetov\u00e1 lepidla poskytovat velmi vysokou pevnost spoje a odolnost v\u016f\u010di vysok\u00fdm teplot\u00e1m.<\/p>\n\n\n\n
3.3 Tekut\u00e1 lepidla<\/h3>\n\n\n\n
K lepen\u00ed v\u00fdztuh se pou\u017e\u00edvaj\u00ed jednoslo\u017ekov\u00e1 nebo dvouslo\u017ekov\u00e1 epoxidov\u00e1 lepidla. Je obt\u00ed\u017en\u00e9 je nan\u00e1\u0161et rovnom\u011brn\u011b, proto jsou m\u00e9n\u011b \u010dast\u00e1 ne\u017e f\u00f3liov\u00e1 lepidla. P\u0159i pou\u017eit\u00ed tekut\u00fdch lepidel se na okraji lepen\u00ed vytvo\u0159\u00ed postupn\u011b epoxidov\u00e1 kuli\u010dka. Tato kuli\u010dka pom\u00e1h\u00e1 odleh\u010dit nap\u011bt\u00ed na p\u0159echodov\u00e9 hran\u011b.<\/p>\n\n\n\n
3.4 Termoplastick\u00e9 lepic\u00ed f\u00f3lie<\/h3>\n\n\n\n
Dal\u0161\u00ed b\u011b\u017enou volbou jsou termoplastick\u00e9 lepic\u00ed f\u00f3lie. Maj\u00ed n\u00edzk\u00e9 nap\u011bt\u00ed a jsou pln\u011b polymern\u00ed bez nutnosti chemick\u00e9ho vytvrzov\u00e1n\u00ed. Lep\u00ed se na mnoho povrch\u016f a uv\u00e1d\u00ed se, \u017ee se snadno p\u0159epracov\u00e1vaj\u00ed. Tyto vlastnosti roz\u0161i\u0159uj\u00ed jejich pou\u017eit\u00ed.<\/p>\n\n\n\n
3.5 Lepidla vytvrzovan\u00e1 UV z\u00e1\u0159en\u00edm<\/h3>\n\n\n\n
Dal\u0161\u00ed mo\u017enost\u00ed jsou lepidla vytvrzuj\u00edc\u00ed UV z\u00e1\u0159en\u00edm. N\u011bkter\u00e9 p\u0159\u00edpravky lze tisknout s\u00edtotiskem. N\u011bkter\u00e9 UV aktivovan\u00e9 polymery mohou po aktivaci vykazovat lepivost podobnou PSA. Proto\u017ee UV lepidla vytvrzuj\u00ed rychle, jsou u\u017eite\u010dn\u00e1 pro n\u00e1vrhy, kter\u00e9 pot\u0159ebuj\u00ed rychl\u00fd p\u0159echod mezi m\u011bkk\u00fdm a tvrd\u00fdm materi\u00e1lem a odleh\u010den\u00ed tahu.<\/p>\n\n\n\n
4. Otvory ve v\u00fdztuh\u00e1ch (pr\u016fchoz\u00ed otvory, mont\u00e1\u017en\u00ed otvory, mont\u00e1\u017en\u00ed otvory)<\/h2>\n\n\n\n
Otvory pro v\u016fli d\u00edlu a otvory pro kone\u010dnou mont\u00e1\u017e se li\u0161\u00ed a n\u011bkdy maj\u00ed opa\u010dn\u00e9 \u00fa\u010dinky. Konstruk\u010dn\u00ed pravidla mus\u00ed odpov\u00eddat zam\u00fd\u0161len\u00e9mu pou\u017eit\u00ed. Konstruk\u010dn\u00ed \u00fadaje mus\u00ed vysv\u011btlovat, jak volit pr\u016fm\u011bry otvor\u016f.<\/p>\n\n\n\n
Pokud to p\u0159i n\u00e1vrhu nebo v\u00fdrob\u011b ignorujete, mohou se na spoj\u00edch mezi otvory d\u00edlu a m\u011bd\u00ed objevit mezery nebo p\u0159eru\u0161en\u00ed m\u011bdi. Mo\u017en\u00e1 budete pot\u0159ebovat pozd\u011bj\u0161\u00ed opravy.<\/p>\n\n\n\n
4.1 Voln\u00e9 otvory sou\u010d\u00e1st\u00ed ve v\u00fdztuze<\/h3>\n\n\n\n
Otvory, kter\u00e9 vykl\u00edzej\u00ed pokoven\u00e9 pr\u016fchoz\u00ed otvory, by m\u011bly b\u00fdt o 250 \u00b5m - 375 \u00b5m v\u011bt\u0161\u00ed ne\u017e pokoven\u00fd pr\u016fchoz\u00ed otvor. T\u00edm se kompenzuje p\u0159\u00edpadn\u00e1 nesouosost p\u0159i laminov\u00e1n\u00ed a pom\u00e1h\u00e1 se zajistit, aby pokoven\u00e9 otvory nebyly blokov\u00e1ny v\u00fdztuhou.<\/p>\n\n\n\n
4.2 Mont\u00e1\u017en\u00ed \/ mont\u00e1\u017en\u00ed otvory<\/h3>\n\n\n\n
Otvory ve v\u00fdztuze ur\u010den\u00e9 k mont\u00e1\u017ei by m\u011bly b\u00fdt o n\u011bco men\u0161\u00ed ne\u017e otvory v pru\u017ein\u011b. To pom\u00e1h\u00e1 zabr\u00e1nit tomu, aby se mont\u00e1\u017en\u00ed nap\u011bt\u00ed p\u0159en\u00e1\u0161elo do flexy. Nen\u00ed to v\u017edy nutn\u00e9. V n\u011bkter\u00fdch konstrukc\u00edch m\u016f\u017ee b\u00fdt ohyb p\u0159ipevn\u011bn p\u0159\u00edmo k nosi\u010di bez v\u00fdztuhy.<\/p>\n\n\n\n
4.3 Nepodporovan\u00e9 mont\u00e1\u017en\u00ed otvory<\/h3>\n\n\n\n
U mont\u00e1\u017en\u00edch otvor\u016f, kter\u00e9 nemaj\u00ed v\u00fdztu\u017enou podp\u011bru, ponechte kolem otvoru m\u011b\u010f (krou\u017eek), abyste zv\u00fd\u0161ili pevnost. Pokud to konstrukce umo\u017e\u0148uje, lze stejnou metodu pou\u017e\u00edt i pro b\u011b\u017en\u00e9 mont\u00e1\u017en\u00ed otvory. Tento tvar tak\u00e9 usnad\u0148uje uzemn\u011bn\u00ed.<\/p>\n\n\n\n
5. B\u011b\u017en\u00e9 materi\u00e1ly pro vyztu\u017een\u00ed FPC a jejich vlastnosti<\/h2>\n\n\n\n
FPC b\u011b\u017en\u011b pou\u017e\u00edv\u00e1 t\u0159i materi\u00e1ly v\u00fdztu\u017ee: PI, FR4 a nerezov\u00e1 ocel. Podrobnosti:<\/p>\n\n\n\n
5.1 PI (polyimid)<\/h3>\n\n\n\n
PI je speci\u00e1ln\u00ed technick\u00fd materi\u00e1l. Je \u0161iroce pou\u017e\u00edv\u00e1n v letectv\u00ed, mikroelektronice, nanotechnologi\u00edch, LCD displej\u00edch, separa\u010dn\u00edch membr\u00e1n\u00e1ch a laserech. Je neho\u0159lav\u00fd a odol\u00e1v\u00e1 vysok\u00fdm i n\u00edzk\u00fdm teplot\u00e1m. Teplotn\u00ed rozsahy pro dlouhodob\u00e9 pou\u017eit\u00ed se li\u0161\u00ed podle t\u0159\u00eddy, ale PI zvl\u00e1d\u00e1 \u0161irok\u00fd rozsah. V FPC se PI pou\u017e\u00edv\u00e1 jako ochrann\u00e1 f\u00f3lie a jako ztu\u017euj\u00edc\u00ed f\u00f3lie. Ochrann\u00e1 f\u00f3lie PI izoluje obvody. PI v\u00fdztuhy se pou\u017e\u00edvaj\u00ed na zadn\u00ed stran\u011b zlat\u00fdch prst\u016f a na dal\u0161\u00edch m\u00edstech, kter\u00e1 pot\u0159ebuj\u00ed izolaci a v\u00fdztuhu. Tlou\u0161\u0165ka PI v\u00fdztuh se vol\u00ed podle konstrukce a prost\u0159ed\u00ed. Toleranci lze regulovat na \u00b10,03 mm. PI dob\u0159e sn\u00e1\u0161\u00ed procesn\u00ed teploty (b\u011b\u017en\u011b 130 \u00b0C-280 \u00b0C, v z\u00e1vislosti na t\u0159\u00edd\u011b). B\u011b\u017en\u00e9 tlou\u0161\u0165ky PI v\u00fdztuh: 0,075 mm, 0,1 mm, 0,125 mm, 0,15 mm, 0,175 mm, 0,2 mm, 0,225 mm, 0,25 mm.<\/p>\n\n\n\n FR4 je neho\u0159lav\u00fd materi\u00e1l. Ve srovn\u00e1n\u00ed s deskami na b\u00e1zi pap\u00edru m\u00e1 lep\u0161\u00ed mechanickou pevnost, rozm\u011brovou stabilitu, odolnost proti n\u00e1razu a vlhkosti. Jeho elektrick\u00e9 vlastnosti jsou dobr\u00e9 a funguje p\u0159i vy\u0161\u0161\u00edch teplot\u00e1ch. P\u0159i zpracov\u00e1n\u00ed m\u00e1 \u010dasto v\u00fdhody oproti jin\u00fdm desk\u00e1m ze skeln\u00fdch vl\u00e1ken a prysky\u0159ice. P\u0159i v\u00fdrob\u011b FPC se FR4 pou\u017e\u00edv\u00e1 hlavn\u011b jako v\u00fdztuha za p\u00e1jec\u00edmi plochami. Zvy\u0161uje tvrdost v oblasti p\u00e1jen\u00ed a chr\u00e1n\u00ed d\u00edly pro povrchovou mont\u00e1\u017e p\u0159ed poruchami zp\u016fsoben\u00fdmi opakovan\u00fdm oh\u00fdb\u00e1n\u00edm. Proto\u017ee se FR4 opot\u0159ebov\u00e1v\u00e1 v\u00edce ne\u017e PI, obvykle se nepou\u017e\u00edv\u00e1 pro vyztu\u017een\u00ed zlat\u00fdch prst\u016f. Pro FR4 v\u00fdztuhy: pokud je tlou\u0161\u0165ka 1,0 mm, je tolerance \u00b10,1 mm. B\u011b\u017en\u00e9 tlou\u0161\u0165ky v\u00fdztuh FR4: 0,1 mm, 0,2 mm, 0,3 mm, 0,4 mm, 0,5 mm, 0,6 mm, 0,7 mm, 1,6 mm.<\/p>\n\n\n\n Rychl\u00e9 srovn\u00e1n\u00ed: PI m\u00e1 p\u0159\u00edsn\u011bj\u0161\u00ed tolerance a dobrou tepelnou odolnost, ale nen\u00ed p\u0159\u00edli\u0161 tvrd\u00fd. FR4 je siln\u011bj\u0161\u00ed a tu\u017e\u0161\u00ed, m\u00e1 v\u011bt\u0161\u00ed tolerance a je stabiln\u011bj\u0161\u00ed pro ru\u010dn\u00ed mont\u00e1\u017e, ale h\u016f\u0159e se p\u0159epracov\u00e1v\u00e1.<\/p>\n\n\n\n Obvykle z nerezov\u00e9 oceli 303. 303 je austenitick\u00e1 nerezov\u00e1 ocel s obsahem s\u00edry a selenu pro zlep\u0161en\u00ed obrobitelnosti a povrchov\u00e9 \u00fapravy. V\u00fdztuhy FPC maj\u00ed \u010dasto slo\u017eit\u00e9 tvary a nerezov\u00e1 ocel 303 se snadno lept\u00e1. U v\u00fdrobk\u016f FPC, kter\u00e9 vy\u017eaduj\u00ed vysokou stabilitu, jsou v\u00fdztuhy z oceli 303 b\u011b\u017en\u00e9. Ocelov\u00e9 v\u00fdztuhy nelze vrtat pomoc\u00ed CNC ani \u0159ezat FPC laserem. Obvykle se vyr\u00e1b\u011bj\u00ed chemick\u00fdm lept\u00e1n\u00edm, tak\u017ee n\u00e1klady jsou vy\u0161\u0161\u00ed. Vy\u017eaduj\u00ed ru\u010dn\u00ed mont\u00e1\u017e, proces je slo\u017eit\u011bj\u0161\u00ed a n\u00e1klady vy\u0161\u0161\u00ed. B\u011b\u017en\u00e9 tlou\u0161\u0165ky ocelov\u00fdch v\u00fdztuh: 0,1 mm, 0,2 mm.<\/p>\n\n\n\n P\u0159i navrhov\u00e1n\u00ed v\u00fdztuh a otvor\u016f si ujasn\u011bte \u00fa\u010del ka\u017ed\u00e9ho otvoru (v\u016fle, mont\u00e1\u017e, upevn\u011bn\u00ed). V pozn\u00e1mk\u00e1ch ke konstrukci uve\u010fte pr\u016fm\u011br otvoru, toleranci a toleranci polohy.<\/p>\n\n\n\n U v\u00fdztuh v bl\u00edzkosti pokoven\u00fdch otvor\u016f ponechte dostate\u010dnou v\u016fli nebo otvor zv\u011bt\u0161ete o 250-375 \u00b5m, aby nedo\u0161lo k zablokov\u00e1n\u00ed pokoven\u00fdch otvor\u016f p\u0159i laminov\u00e1n\u00ed.<\/p>\n\n\n\n Pokud m\u00e1 v\u00fdztuha sn\u00e1\u0161et mont\u00e1\u017en\u00ed nebo mechanick\u00e9 nam\u00e1h\u00e1n\u00ed, zva\u017ete tvrd\u0161\u00ed materi\u00e1ly, jako je FR4 nebo ocel. Pokud je v\u0161ak pravd\u011bpodobn\u00e9, \u017ee v budoucnu dojde k p\u0159epracov\u00e1n\u00ed, dejte p\u0159ednost \u0159e\u0161en\u00edm z PI nebo termoplastick\u00fdch f\u00f3li\u00ed, kter\u00e9 se sn\u00e1ze p\u0159epracov\u00e1vaj\u00ed.<\/p>\n\n\n\n P\u0159i v\u00fdb\u011bru lepidel berte v \u00favahu teplotu p\u0159etaven\u00ed (zejm\u00e9na u bezolovnat\u00e9ho p\u00e1jen\u00ed), pot\u0159eby p\u0159epracov\u00e1n\u00ed, dlouhodob\u00e9 prost\u0159ed\u00ed (teplota, vlhkost) a povrchy, kter\u00e9 maj\u00ed b\u00fdt lepeny.<\/p>\n\n\n\n U slo\u017eit\u00fdch tvar\u016f nebo vysoce p\u0159esn\u00fdch v\u00fdztuh d\u00e1vejte p\u0159ednost chemick\u00e9mu lept\u00e1n\u00ed nebo \u0159ez\u00e1n\u00ed laserem, abyste sn\u00ed\u017eili n\u00e1klady na n\u00e1stroje. Pro velk\u00e9 objemy a pravideln\u00e9 tvary zva\u017ete lisov\u00e1n\u00ed nebo vysek\u00e1v\u00e1n\u00ed, abyste sn\u00ed\u017eili jednotkov\u00e9 n\u00e1klady.<\/p>\n\n\n\n Pokud pot\u0159ebujete po mont\u00e1\u017ei odstranit v\u00fdztuhu, ponechte mezi v\u00fdztuhou a ohybem m\u016fstky nebo r\u00fdhy, aby bylo mo\u017en\u00e9 v\u00fdztuhu pozd\u011bji p\u0159eru\u0161it nebo odstranit.<\/p>\n\n\n\n PI v\u00fdztuhy: t\u011bsn\u00e1 tolerance, dobr\u00e1 odolnost proti vysok\u00fdm teplot\u00e1m, snadn\u00e1 integrace s flexem, dobr\u00e1 p\u0159epracovatelnost; nejsou tak tvrd\u00e9 jako FR4.<\/p>\n\n\n\n V\u00fdztuhy FR4: siln\u011bj\u0161\u00ed, tvrd\u0161\u00ed, stabiln\u011bj\u0161\u00ed pro p\u00e1jec\u00ed plochy; v\u011bt\u0161\u00ed tolerance, obt\u00ed\u017en\u011bj\u0161\u00ed p\u0159epracov\u00e1n\u00ed.<\/p>\n\n\n\n Ocelov\u00e9 v\u00fdztuhy 303: velmi tuh\u00e9 a stabiln\u00ed, ale dra\u017e\u0161\u00ed, vyr\u00e1b\u011bj\u00ed se lept\u00e1n\u00edm, vy\u017eaduj\u00ed ru\u010dn\u00ed mont\u00e1\u017e a jejich p\u0159epracov\u00e1n\u00ed je obt\u00ed\u017en\u00e9.<\/p>\n\n\n\n <\/p>","protected":false},"excerpt":{"rendered":" Introduction FPC stiffening does more than hold parts. It can also help with heat dissipation. But if you need to 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FPC stiffening does more than hold parts. It can also help with heat dissipation. But if you need to […]","_links":{"self":[{"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/posts\/4618","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/comments?post=4618"}],"version-history":[{"count":1,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/posts\/4618\/revisions"}],"predecessor-version":[{"id":4624,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/posts\/4618\/revisions\/4624"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/media\/4620"}],"wp:attachment":[{"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/media?parent=4618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/categories?post=4618"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/tags?post=4618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"PI](\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/PI-Polyimide.webp\")
<\/figure>\n\n\n\n5.2 FR4<\/h3>\n\n\n\n
![\"FR4\"](\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/FR4.webp\")
<\/figure>\n\n\n\n5.3 Ocelov\u00e9 v\u00fdztuhy (nerezov\u00e1 ocel)<\/h3>\n\n\n\n
![\"Steel](\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/01\/Steel-Stiffeners.webp\")
<\/figure>\n\n\n\n6. N\u00e1vrhov\u00e9 body a praktick\u00e9 rady<\/h2>\n\n\n\n
7. Shrnut\u00ed (klady a z\u00e1pory)<\/h2>\n\n\n\n