Sady, kter\u00e9 nab\u00edz\u00edme, nejsou opat\u0159eny z\u00e1rukou proti neopr\u00e1vn\u011bn\u00e9mu otev\u0159en\u00ed. Pokud v\u00e1\u0161 produkt vy\u017eaduje viditeln\u00fd d\u016fkaz prvn\u00edho otev\u0159en\u00ed, zajist\u011bte to zvl\u00e1\u0161\u0165, nap\u0159\u00edklad smr\u0161\u0165ovac\u00edm p\u00e1skem nebo vn\u011bj\u0161\u00edm t\u011bsn\u011bn\u00edm krabice, nebo zvolte jin\u00fd typ uz\u00e1v\u011bru.<\/p>\n
Sou\u010d\u00e1st\u00ed testu je tak\u00e9 l\u00e1hev. Z\u00e1tka, uz\u00e1v\u011br i hrdlo mus\u00ed spolu fungovat, proto v\u017edy testujte se skute\u010dn\u00fdmi l\u00e1hvemi, kter\u00e9 budete plnit, a ne s podobn\u011b vypadaj\u00edc\u00edm vzorkem.<\/p>\n DIN18 je b\u011b\u017en\u00e9 ozna\u010den\u00ed pro tuto velikost hrdla, sklo je v\u0161ak tvarovan\u00fd v\u00fdrobek a hrdla se v r\u00e1mci tolerance li\u0161\u00ed. P\u0159ed testov\u00e1n\u00edm ov\u011b\u0159te, \u017ee jsou l\u00e1hve a z\u00e1tky ur\u010deny pro stejn\u00e9 proveden\u00ed hrdla. Na\u0161e lahvi\u010dek s kap\u00e1tkem DIN18\/GL18<\/a> jsou typickou shodou se z\u00e1tkami popsan\u00fdmi zde.<\/p>\n Pokud m\u016f\u017eete, odeberte vzorky l\u00e1hv\u00ed z v\u00edce krabic. Pokud jedna krabice poch\u00e1z\u00ed z jin\u00e9 v\u00e1rky skla, rozd\u00edl se projev\u00ed v\u010das.<\/p>\n Prove\u010fte na \u010dist\u00e9m pracovn\u00edm stole za dobr\u00e9ho osv\u011btlen\u00ed, p\u0159ed pln\u011bn\u00edm.<\/p>\n Zasu\u0148te z\u00e1tku ru\u010dn\u011b do pr\u00e1zdn\u00e9 l\u00e1hve a pot\u00e9 ji zatla\u010dte a\u017e na doraz. Zaznamenejte, zda vklouzne hladce a zastav\u00ed se \u010dist\u011b, nebo zda vy\u017eaduje neobvyklou s\u00edlu. Pot\u00e9 l\u00e1hev oto\u010dte a kuli\u010dku rolujte po rovn\u00e9m, \u010dist\u00e9m povrchu.<\/p>\n Chcete vid\u011bt kuli\u010dku, kter\u00e1 se voln\u011b ot\u00e1\u010d\u00ed v\u0161emi sm\u011bry, bez drhnut\u00ed a zasek\u00e1v\u00e1n\u00ed. Kuli\u010dka, kter\u00e1 se ot\u00e1\u010d\u00ed jen na jedn\u00e9 stran\u011b, obvykle ukazuje na ne\u010distoty v l\u016f\u017eku nebo na z\u00e1tku, kter\u00e1 nedosedla \u00fapln\u011b.<\/p>\n Zkou\u0161ka nasazen\u00ed na pr\u00e1zdno vypov\u00edd\u00e1 o geometrii. V\u00fdkon uk\u00e1\u017ee teprve pln\u011bn\u00ed skute\u010dn\u00fdm produktem. Roll-on formulace se pohybuj\u00ed od \u0159\u00eddk\u00fdch olej\u016f po hust\u0161\u00ed s\u00e9ra a gely a pr\u016ftok ke kuli\u010dce se mezi nimi v\u00fdrazn\u011b li\u0161\u00ed.<\/p>\n B\u011bhem t\u011bchto test\u016f udr\u017eujte formulaci konzistentn\u00ed. Pokud pl\u00e1nujete zm\u011bnit viskozitu, p\u0159idat esenci\u00e1ln\u00ed oleje ve vy\u0161\u0161\u00edm procentu\u00e1ln\u00edm zastoupen\u00ed nebo zm\u011bnit nosn\u00fd olej, testujte znovu. N\u011bkter\u00e9 slo\u017eky mohou \u010dasem ovlivnit plastov\u00e9 d\u00edly, tak\u017ee kr\u00e1tk\u00fd test nenahrad\u00ed del\u0161\u00ed zkou\u0161ku stability s va\u0161\u00edm vlastn\u00edm produktem.<\/p>\n Uz\u00e1v\u011br by se m\u011bl na z\u00e1vit nasadit hladce a ut\u00e1hnout a\u017e k pevn\u00e9mu dorazu. Zkontrolujte, zda se nep\u0159ek\u0159\u00ed\u017e\u00ed z\u00e1vit, zda nez\u016fst\u00e1v\u00e1 mezera u spodn\u00ed hrany a zda jej c\u00edlov\u00fd z\u00e1kazn\u00edk otev\u0159e bez n\u00e1\u0159ad\u00ed. Pokud pou\u017e\u00edv\u00e1te automatick\u00e9 zav\u00ed\u010dkov\u00e1n\u00ed,Projd\u011bte testovac\u00ed kusy strojem a porovnejte je s kusy dota\u017een\u00fdmi ru\u010dn\u011b. Pomoc s v\u00fdb\u011brem za\u0159\u00edzen\u00ed najdete v na\u0161em \u010dl\u00e1nku o poloautomatick\u00fdch a automatick\u00fdch zav\u00ed\u010dkovac\u00edch stroj\u00edch.<\/p>\n Pokud pou\u017e\u00edv\u00e1te \u0161roubovac\u00ed uz\u00e1v\u011bry i jinde ve sv\u00e9m sortimentu, na\u0161e uz\u00e1v\u011bry FortiLock<\/a> stoj\u00ed za prov\u011b\u0159en\u00ed kv\u016fli jednotnosti nap\u0159\u00ed\u010d produktov\u00fdmi \u0159adami.<\/p>\n Write down the bottle lot, the plug and cap lot, the formula and batch, the date, the equipment used and the result of each check. If a problem comes up months later, this record makes it much easier to see whether it was the glass, the closure or the filling method. See also our checklist on DIN18 parts compatibility and our overview of GuardSeal plugs<\/a>, which covers the other plug styles we supply.<\/p>\n If you are switching bottle supplier, changing formula, or moving from hand filling to a machine, order samples and run the steps above before placing a carton order. It costs little and avoids pallets of unusable stock.<\/p>\n No. The sets described here use a non-tamper-evident PP cap. If you need tamper evidence, add an outer seal or choose a different closure type.<\/p>\n Only if the necks are the same DIN18 finish and a fit test passes. Always test with the exact bottle you intend to fill.<\/p>\n At minimum 24 hours in upright, inverted and side positions, using your actual formula. For long shelf-life products, add a longer stability test of your own.<\/p>\n Choose the color that suits your label and brand. The function is the same, so black and white caps can be tested together as one family.<\/p>\n![\"Row](\"https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/row-of-amber-glass-bottles-ready-for-filling-and-closure-testing-1024x682.jpg\")
<\/figure>\nKrok 1: Nejprve ov\u011b\u0159te proveden\u00ed hrdla<\/h2>\n
Krok 2: Vizu\u00e1ln\u00ed kontrola d\u00edl\u016f<\/h2>\n
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![\"Quality](\"https:\/\/www.packaging.si\/wp-content\/uploads\/2026\/11\/quality-inspection-of-small-packaging-parts-on-a-laboratory-bench-1024x682.jpg\")
<\/figure>\nKrok 3: Zkou\u0161ka nasazen\u00ed nasucho a pohyb kuli\u010dky<\/h2>\n
Krok 4: Zkou\u0161ka pln\u011bn\u00edm skute\u010dnou formulac\u00ed<\/h2>\n
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Krok 5: Dosednut\u00ed uz\u00e1v\u011bru<\/h2>\n
P\u0159ehledn\u00e1 referen\u010dn\u00ed tabulka<\/h2>\n
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\n \nKontrola<\/th>\n Na co se zam\u011b\u0159it<\/th>\n Pravd\u011bpodobn\u00e1 p\u0159\u00ed\u010dina z\u00e1vady<\/th>\n<\/tr>\n<\/thead>\n \n Dosednut\u00ed z\u00e1tky<\/td>\n Dosed\u00e1 rovnom\u011brn\u011b a zastav\u00ed se \u010dist\u011b<\/td>\n Odchylka hrdla, z\u00e1tka nevyrovnan\u00e1, nespr\u00e1vn\u00e9 proveden\u00ed<\/td>\n<\/tr>\n \n Ball movement<\/td>\n Turns freely in all directions<\/td>\n Debris in seat, incomplete seating<\/td>\n<\/tr>\n \n Product transfer<\/td>\n Even film, no skipping<\/td>\n Formula too thick, air in the plug area<\/td>\n<\/tr>\n \n Leak check<\/td>\n Dry paper after 24 hours in all positions<\/td>\n Over-filling, loose cap, damaged neck<\/td>\n<\/tr>\n \n Cap fit<\/td>\n Smooth thread, no gap<\/td>\n Cross-threading, tightening method<\/td>\n<\/tr>\n \n Appearance<\/td>\n Consistent color and clarity<\/td>\n Lot-to-lot variation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Tipy pro plnic\u00ed linku<\/h2>\n
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Co zaznamenat<\/h2>\n
When to ask for samples first<\/h2>\n
\u010cast\u00e9 dotazy<\/h2>\n
Are these roll-on plugs tamper-evident?<\/h3>\n
Can I use the same plug with different bottle brands?<\/h3>\n
How long should a leak test run?<\/h3>\n
Which cap color should I choose?<\/h3>\n