{"id":4745,"date":"2026-03-03T08:22:24","date_gmt":"2026-03-03T08:22:24","guid":{"rendered":"https:\/\/flj-pcb.com\/?p=4745"},"modified":"2026-03-03T08:32:02","modified_gmt":"2026-03-03T08:32:02","slug":"pcb-size-control-prevention-solutions","status":"publish","type":"post","link":"https:\/\/flj-pcb.com\/bs\/pcb-size-control-prevention-solutions\/","title":{"rendered":"Kontrola veli\u010dine PCB-a: prevencija i rje\u0161enja"},"content":{"rendered":"<p>Ova bilje\u0161ka obja\u0161njava za\u0161to se veli\u010dina PCB panela mo\u017ee mijenjati tokom obrade i kako to kontrolisati. Od prvog prijenosa uzorka na unutra\u0161njem sloju na <a href=\"https:\/\/flj-pcb.com\/bs\/pcb-substrate-classification-and-material-properties\/\" data-type=\"post\" data-id=\"4685\">Osnovni materijal PCB-a<\/a>, Kroz nekoliko ciklusa laminacije, a zatim pri prijenosu uzorka na vanjski sloj, panel se mo\u017ee \u0161iriti ili skupljati razli\u010dito u smjeru X i Y. Pregledom cjelokupnog dijagrama proizvodnog toka PCB-a mo\u017eemo prona\u0107i korake procesa i uzroke koji dovode do abnormalnog \u0161irenja panela ili lo\u0161e konzistentnosti dimenzija.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. Glavni uzroci \u0161irenja i skupljanja PCB-a<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1.1 Stabilnost materijala pri dolasku i dosljednost iz serije u seriju<\/h3>\n\n\n\n<p>Glavni faktor je stabilnost dimenzija osnovnog materijala PCB-a. Obratite posebnu pa\u017enju na to koliko je materijal dosljedan izme\u0111u ciklusa laminacije od istog dobavlja\u010da. \u010cak i ako svaka serija zadovoljava specifikaciju materijala, lo\u0161a dosljednost izme\u0111u serija mo\u017ee uzrokovati probleme. Na primjer, probna plo\u010da iz prve serije mo\u017ee biti pode\u0161ena uz razumnu kompenzaciju unutra\u0161njih slojeva. Kasnije, kada proizvodnja koristi drugu seriju osnovnog materijala, kona\u010dna veli\u010dina uzorka mo\u017ee iza\u0107i iz tolerancije.<\/p>\n\n\n\n<p>Postoji jo\u0161 jedan abnormalni slu\u010daj. Neke serije pokazuju normalan rendgenski snimak i omjere prijenosa vanjskog sloja nakon laminacije vanjskog sloja. Ali kasnije, prije obrubljivanja kontura, utvr\u0111eno je da se panel smanjio. U jednom proizvodnom slu\u010daju, neke serije su pokazale ozbiljno smanjenje nakon prijenosa vanjskog sloja. Panelizirana \u0161irina u odnosu na isporu\u010denu du\u017einu jedinice, u odnosu na skalu prijenosa vanjskog sloja, smanjila se za \u010dak 3,6 mil po 10 in\u010da. Pratili smo ovu seriju. Podaci sa rendgenskog snimanja nakon laminacije vanjskog sloja i skala prijenosa vanjskog sloja i dalje su bili unutar kontrolnih granica. Trenutno procesna kontrola nema pouzdanu metodu pra\u0107enja za rano otkrivanje ovakvog pomaka.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1.2 Faktori dizajna za panelizaciju (raspored)<\/h3>\n\n\n\n<p>Standardni paneli se obi\u010dno projektuju sa simetri\u010dnim rasporedima. Kada je skala prenosa normalna, simetri\u010dni rasporedi ne uti\u010du mnogo na kona\u010dnu veli\u010dinu uzorka. Ali neki kupci ili dizajneri koriste asimetri\u010dne rasporede panela kako bi pobolj\u0161ali iskori\u0161tenje materijala i smanjili tro\u0161kove. Nesimetri\u010dni rasporedi mogu uzrokovati o\u010digledne razlike u veli\u010dini uzorka u razli\u010ditim dijelovima panela. Tokom obrade mo\u017eete primijetiti lo\u0161iju kontrolu registracije kod nesimetri\u010dnih panela. To vrijedi za lasersko bu\u0161enje slijepih prolaza, ekspoziciju prijenosa na vanjskim slojevima, ekspoziciju maske za lemljenje i \u0161tampanje natpisa. U ovim koracima nesimetri\u010dni paneli su te\u017ee poravnati i pobolj\u0161ati nego simetri\u010dni.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1.3 Prvi faktori prijenosa uzoraka unutra\u0161njeg sloja<\/h3>\n\n\n\n<p>Prijenos uzorka prvog unutra\u0161njeg sloja klju\u010dni je korak za kona\u010dnu veli\u010dinu PCB-a. Ako je skaliranje filma ili kompenzacija filma za prijenos prvog unutra\u0161njeg sloja pogre\u0161no, veli\u010dina gotovog uzorka PCB-a mo\u017eda ne\u0107e zadovoljiti potrebe kupca. Pogre\u0161no skaliranje prvog sloja mo\u017ee tako\u0111er uzrokovati kasnije probleme. Na primjer, laserske slijepe vijase mo\u017eda se ne\u0107e poravnati sa svojim odvodnim plo\u010dicama. To mo\u017ee smanjiti izolaciju izme\u0111u slojeva i \u010dak uzrokovati kratke spojeve. Tako\u0111er mo\u017ee uzrokovati probleme s registracijom prolaznih ili slijepih vijasa tijekom prijenosa vanjskog sloja.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. Metode ciljanog nadzora i pobolj\u0161anja<\/h2>\n\n\n\n<p>Na osnovu gore navedene analize mo\u017eemo usvojiti specifi\u010dne metode pra\u0107enja i pobolj\u0161anja.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 Pratiti stabilnost veli\u010dine dolaznog osnovnog materijala i konzistentnost serije<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Periodi\u010dna ispitivanja. Redovno ispitujte stabilnost dimenzija osnovnog materijala od razli\u010ditih dobavlja\u010da. Pratite razlike u popre\u010dnom (X) i uzdu\u017enom (Y) smjeru izme\u0111u serija istog razreda materijala. Koristite jednostavnu statistiku za analizu podataka ispitivanja. To poma\u017ee u pronala\u017eenju dobavlja\u010da \u010diji je materijal stabilniji tokom vremena.<\/li>\n\n\n\n<li>Koristite podatke za odabir dobavlja\u010da. Dostavite podatke o dimenzioniranju SQE-u (in\u017eenjeringu kvaliteta dobavlja\u010da) i odjelu nabavke. Ovo pru\u017ea bolje dokaze za odabir dobavlja\u010da.<\/li>\n\n\n\n<li>Otkrijte ozbiljne pomake. Za pojedina\u010dne lo\u0161e serije koje uzrokuju ozbiljno skupljanje nakon prijenosa na vanjski sloj, jedino prakti\u010dno otkrivanje danas je mjerenje prvih proizvodnih panela pri obradi kontura ili inspekcija pri pregledu po\u0161iljke. Potonja metoda zahtijeva strogu kontrolu serija. U velikoj proizvodnji s mnogo serija mogu se dogoditi zamjene, \u0161to ote\u017eava otkrivanje.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">2.2 Koristite simetri\u010dne panelne dizajne kad god je to mogu\u0107e<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Pravilo dizajna. Poku\u0161ajte usvojiti simetri\u010dne dizajne panela. Simetrija poma\u017ee da se \u0161irenje i skupljanje ravnomjerno rasporede po svim isporu\u010denim jedinicama u panelu.<\/li>\n\n\n\n<li>Ozna\u010dite polo\u017eaje panela. Ako je mogu\u0107e, zamolite kupca da dopusti oznake na rubu procesa, poput oznaka graviranja ili otisnutog teksta, kako biste ozna\u010dili polo\u017eaj svake isporu\u010dene jedinice na panelu. Kod asimetri\u010dnih dizajna ova oznaka je korisnija. Ako se kod jedne jedinice na panelu kasnije pojavi odstupanje u veli\u010dini ili lokalni defekt donje padice slijepe vijke, mo\u017eete identificirati neispravnu jedinicu i ukloniti je prije slanja. Time se izbjegavaju kvarovi pri sklapanju kod kupca i pritu\u017ebe.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"782\" height=\"1024\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/03\/Try-to-adopt-symmetric-panel-designs-782x1024.webp\" alt=\"Try to adopt symmetric panel designs\" class=\"wp-image-4746\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2.3 Napravite pilot-odbor za postavljanje skale prijenosa i validaciju<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Izradite \u201cscale pilot\u201d plo\u010du. Napravite prvu pilot plo\u010du kako biste odredili ispravno skaliranje filma za prvi prijenos unutarnjeg sloja. Ovaj korak je klju\u010dan kada mijenjate osnovni materijal ili dobavlja\u010de P-filma radi smanjenja tro\u0161kova ili iz drugih razloga.<\/li>\n\n\n\n<li>Pa\u017eljivo postupajte s nekontrolisanim panelima. Ako prona\u0111ete panele koji su izvan kontrole, provjerite da li su via rupe na jedinici nastale sekundarnim bu\u0161enjem. Za panele koji slijede rutinski tok bu\u0161enja, mo\u017eete ih pustiti na prenos na vanjski sloj i po potrebi prilagoditi skaliranje filma. Me\u0111utim, za panele sa sekundarno izbu\u0161enim rupama, postupajte s abnormalnim panelima s dodatnom pa\u017enjom. Morate osigurati da dimenzije gotovog uzorka i udaljenost od cilja do via rupe (sekundarno izbu\u0161ene) zadovoljavaju specifikaciju. Vodite evidenciju: prikupljajte podatke o skaliranju prvog ploa za sekundarno laminirane panele kako biste imali referencu.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">2.4 Kontrola procesa pomo\u0107u podataka o registraciji unutra\u0161njeg sloja rendgenskim zrakama<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Koristite rendgensku registraciju. Nakon laminacije, koristite rendgenska mjerenja unutra\u0161njih slojeva u panelu kako biste dobili podatke o registraciji za polo\u017eaje izbu\u0161enih via-otvora. Uporedite ove izmjerene brojeve unutra\u0161njih slojeva s prihva\u0107enim podacima pilot plo\u010de. Ova usporedba pokazuje ima li panel neobi\u010dno \u0161irenje ili skupljanje.<\/li>\n\n\n\n<li>U\u017eeta tolerancija skaliranja. Teoretska analiza pokazuje da se skaliranje ovdje treba kontrolisati unutar otprilike \u00b10.025% kako bi se ispunili zahtjevi za veli\u010dinu standardnih panela. Odr\u017eavajte toleranciju uskom kako biste izbjegli kasnije probleme pri registraciji.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/03\/Use-X-ray-registration.webp\" alt=\"Use X-ray registration\" class=\"wp-image-4747\" srcset=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/03\/Use-X-ray-registration.webp 600w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/03\/Use-X-ray-registration-300x300.webp 300w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/03\/Use-X-ray-registration-150x150.webp 150w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2026\/03\/Use-X-ray-registration-12x12.webp 12w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">3. Sa\u017eetak i kona\u010dni savjet<\/h2>\n\n\n\n<p>Analizom glavnih uzroka \u0161irenja i skupljanja PCB-a mo\u017eemo prona\u0107i prakti\u010dne ta\u010dke pra\u0107enja i metode pobolj\u0161anja. Klju\u010dne radnje su:<\/p>\n\n\n\n<p>\u2022 Testirati i pratiti stabilnost dolaznog materijala kroz serije.<\/p>\n\n\n\n<p>\u2022 Preferirajte simetri\u010dne rasporede panela i dodajte oznake polo\u017eaja kada raspored mora biti asimetri\u010dan.<\/p>\n\n\n\n<p>\u2022 Koristite pilot plo\u010de za postavljanje skaliranja prvog filma unutra\u0161njeg sloja i zabilje\u017eite podatke.<\/p>\n\n\n\n<p>\u2022 Koristite rendgensku registraciju nakon laminacije za rano otkrivanje pomaka veli\u010dine.<\/p>\n\n\n\n<p>\u2022 Druga\u010dije i pa\u017eljivije tretirati panele sa sekundarnim bu\u0161enjem.<\/p>\n\n\n\n<p>Nadam se da \u0107e prakti\u010darima PCB-a ove ideje biti korisne. Kombinirajte ove metode sa svojim proizvodnim uslovima. Zatim odaberite pobolj\u0161anja koja odgovaraju va\u0161oj fabrici i va\u0161im proizvodima. Ako \u017eelite, mogu pripremiti kratku kontrolnu listu ili predlo\u017eak za testiranje materijala i evidenciju pilot-plo\u010da koje mo\u017eete koristiti na proizvodnoj liniji.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. Prednosti kompanije Philifast u kontroli veli\u010dine PCB-a i stabilnosti procesa<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">4.1 Kapaciteti za proizvodnju i kontrolu kvaliteta<\/h3>\n\n\n\n<p>Philifast ima sna\u017ene prakti\u010dne prednosti u kontroli promjene veli\u010dine PCB-a i u isporuci stabilnih, pouzdanih plo\u010da. Kompanija posluje ve\u0107 dugi niz godina i koristi napredne proizvodne linije i alate za inspekciju. Posjeduje klju\u010dne certifikate kvaliteta i ima stru\u010dni in\u017eenjerski tim koji se bavi pilot plo\u010dama, pregledom dolaznog materijala i pode\u0161avanjem procesa. Philifast ima vi\u0161e <a href=\"https:\/\/flj-pcb.com\/bs\/pcb-assembly\/smt-assembly\/\" data-type=\"page\" data-id=\"1923\">SMT <\/a>linije, rendgenska, AOI i SPI inspekcija, i potpuna <a href=\"https:\/\/flj-pcb.com\/bs\/pcb-assembly\/\" data-type=\"page\" data-id=\"1919\">PCBA <\/a>liniju, koji svi poma\u017eu u ranoj fazi protoka da se uo\u010de i sprije\u010de problemi sa veli\u010dinom i registracijom.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.2 Mjere kontrole procesa i integracija usluga<\/h3>\n\n\n\n<p>Philifast primjenjuje stroge kontrole ulaznog materijala, bilje\u017ei podatke o skupljanju pilot-plo\u010de i koristi rendgensku registraciju za pra\u0107enje ciljeva unutra\u0161njih slojeva nakon laminacije. Ovi koraci smanjuju rizik od kasnijeg skupljanja ili \u0161irenja i olak\u0161avaju otkrivanje eventualnih neispravnih jedinica na plo\u010di prije otpreme. Philifast tako\u0111er nudi usluge izrade PCB-a i PCBA na jednom mjestu, od prototipa do masovne proizvodnje, tako da isti tim koji postavlja uzorak plo\u010de mo\u017ee pratiti proces sklapanja i testiranja radi dosljednih rezultata.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>This note explains why PCB panels can change size during processing and how to control this. From the first inner-layer 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