{"id":1041,"date":"2024-02-04T14:07:04","date_gmt":"2024-02-04T06:07:04","guid":{"rendered":"https:\/\/joyforce-tech.com\/?p=1041"},"modified":"2024-08-25T13:42:31","modified_gmt":"2024-08-25T05:42:31","slug":"how-to-identify-the-quality-of-pva-water-soluble-film-products","status":"publish","type":"post","link":"https:\/\/joyforce-tech.com\/fi\/how-to-identify-the-quality-of-pva-water-soluble-film-products.html","title":{"rendered":"Miten PVA vesiliukoisen kalvon tuotteiden laatu tunnistetaan?"},"content":{"rendered":"

1) Vesiliukoisuus:<\/p>\n

Kylm\u00e4\u00e4n veteen liukeneva kalvo edellytt\u00e4\u00e4, ett\u00e4 vesi voidaan liuottaa veteen yli 4 \u2103. Mit\u00e4 nopeammin se liukenee, sit\u00e4 parempi. Mit\u00e4 v\u00e4hemm\u00e4n j\u00e4\u00e4mi\u00e4 j\u00e4\u00e4 j\u00e4ljelle liukenemisen j\u00e4lkeen, sit\u00e4 parempi. Mit\u00e4 kirkkaampi liuennut vesi on, sit\u00e4 parempi.<\/p>\n

2) Ulkon\u00e4\u00f6n laatu:<\/p>\n

Mit\u00e4 tasaisempi k\u00e4\u00e4mitys, sit\u00e4 parempi. Rullan ulkopinnalla ei saa olla selvi\u00e4 ep\u00e4tasaisuuksia ja ryppyj\u00e4. Mit\u00e4 tasaisemmat rullakalvon molemmat p\u00e4\u00e4typinnat ovat, sit\u00e4 parempi, \u00b12 mm:n tarkkuudella. Kalvon pinnassa ei saa olla vikoja, kuten kuplia, reiki\u00e4, kuonasulkeumia tai mustia t\u00e4pli\u00e4.<\/p>\n

3) Mekaaninen lujuus:<\/p>\n

Vetolujuuden on oltava yli 25 Mpa. Liian v\u00e4h\u00e4n on helppo vet\u00e4\u00e4 pois. Murtovenym\u00e4n on oltava yli 180%. V\u00e4hemm\u00e4n ei ole pehme\u00e4\u00e4. Suorakulmaisen rep\u00e4isykest\u00e4vyyden on oltava noin 80 kN\/m. Muuten se on haurasta rikkoutuessaan.<\/p>\n

4) Varastointiaika: S\u00e4ilytysaika: Vesiliukoinen kalvo, jolla on vakaa laatu, voidaan s\u00e4ilytt\u00e4\u00e4 yli 1-2 vuotta (ilman kosteutta).<\/p>\n

\"\"<\/p>","protected":false},"excerpt":{"rendered":"

1) Water solubility: Cold water soluble film requires that water can be dissolved in water above 4 \u2103. The faster it dissolves the better. The less residue remaining after dissolution, the better. The clearer the dissolved water, the better. 2) Appearance quality: The smoother the winding, the better. There should be no obvious unevenness and […]<\/p>","protected":false},"author":2,"featured_media":1042,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[43],"tags":[],"class_list":["post-1041","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bolg"],"acf":[],"yoast_head":"\nHow to identify the quality of PVA water-soluble film products - Joyforce PVA Film and Bag<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/joyforce-tech.com\/fi\/how-to-identify-the-quality-of-pva-water-soluble-film-products.html\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to identify the quality of PVA water-soluble film products - Joyforce PVA Film and Bag\" \/>\n<meta property=\"og:description\" content=\"1) Water solubility: Cold water soluble film requires that water can be dissolved in water above 4 \u2103. 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