PE vosak | Polietilenski vosak
Što je PE vosak?
Ova posebna vrsta voska je izrazito robusna, što ga čini vrijednim za primjene koje zahtijevaju otpornost na abraziju i matiranje. U primjenama tiskarske tinte, voskovi na bazi polietilena obično se koriste u obliku disperzija ili pasta, često se priprema metodama kristalizacije. Sadrži mikronizirani PE vosak na oko 1-2% u formulaciji tiskarske tinte i vodenih poliuretanskih premaza dokazano značajno poboljšava otpornost na trljanje.
Karakteristike PE voska
polietilenski vosak koristi se kao dodatak formulacijama tiskarskih boja zbog svoje jedinstvene kvalitete. Evo nekoliko njegovih karakteristika zbog kojih se koristi u ovim formulacijama.
Bolje podmazivanje
PE vosak djeluje kao učinkovito mazivo. Kada se ugradi u formulaciju tinte, PE vosak značajno smanjuje trenje između tinte i opreme za ispis, kao što su valjci, ploče, i druge komponente. Ovo smanjenje trenja smanjuje habanje opreme, pridonoseći njegovoj dugovječnosti i učinkovitom radu.
Povećano podmazivanje omogućeno PE voskom ima izravan utjecaj na kvalitetu ispisa. Pomaže u sprječavanju problema poput razmazivanja tinte, šaranje, i neravnomjerno prekrivanje. Glatki i kontrolirani protok tinte postignut djelovanjem podmazivanja polietilenskog voska osigurava dosljedne i precizne rezultate ispisa. Ovo je osobito važno u industrijama visoke kvalitete, detaljni ispisi su imperativ, kao što su pakiranje, označavanje, i grafike.
Izvrsna toplinska stabilnost
PE vosak ima izvrsnu toplinsku stabilnost koja sprječava probleme poput curenja tinte, razmazivanje, ili izobličenja tijekom procesa stvrdnjavanja. Kada je tinta izložena toplini radi sušenja ili fiksiranja, PE Wax pomaže u održavanju oštrine i jasnoće ispisanih slika, tekst, ili dizajne. nk koji je prošao učinkovito stvrdnjavanje zbog prisutnosti PE voska manje je sklon blijeđenju, pucanje, ili drugi oblici pogoršanja tijekom vremena.
Visoka kemijska otpornost
Uključivanje PE voska daje sloj zaštite formulaciji tinte od kemijskih interakcija. Ovo je osobito značajno jer se tiskarske tinte često sastoje od mješavine pigmenata, veziva, otapala, i aditiva. Ove komponente ponekad mogu biti kemijski reaktivne, što dovodi do neželjenih promjena u konzistenciji tinte, boja, ili stabilnosti. Visoka kemijska otpornost PE voska djeluje kao zaštita od takvih interakcija, pomaže u održavanju cjelovitosti sastava i učinka tinte.
Visoka točka topljenja
Tijekom procesa formulacije tinte, where various components are mixed and heated, the high melting point of PE Wax ensures that it remains in its solid form until intentionally melted. This property simplifies the incorporation of polyethylene wax into the ink formulation, allowing for precise control over its dispersion within the mixture. This assists in minimizing ink smudging, smearing, or transferring onto unintended surfaces, resulting in cleaner and more precise prints.
High Softening Point
As ink components are combined and heated, the wax retains its solid state until the temperature reaches its softening point. This property offers a controlled and gradual transition, allowing for the even dispersion of the wax within the ink formulation. This dispersion contributes to the uniformity of the final ink mixture and its subsequent performance.
In post-printing stages involving heat exposure, the high softening point of PE wax ensures that the wax remains stable and maintains its structural integrity even as temperatures rise. This stability is crucial in preventing distortion or alterations in ink composition that could compromise print quality.
Different Forms of PE wax
The diverse range of PE wax varieties available constitutes a significant role in the formulation and optimization of printing inks. These various wax forms offer distinct properties and functionalities.
Powder Form
PE wax in powder form is finely ground into small particles. This form facilitates rapid and even dispersion within ink formulations. Powdered PE Wax is particularly suitable for applications requiring precise and consistent mixing, as it readily integrates with other ink components, such as pigments and binders. Dodatno, its fine particle size enhances the ink’s homogeneity, contributing to smooth print surfaces and excellent color distribution. U Tripletchemu, we offer powder PE wax.
Granule Form
PE wax in granular form consists of larger particles compared to powder. Granules offer ease of handling and reduced dust generation during production. The larger particle size can contribute to controlled release of the wax during the printing process, allowing for uniform distribution of wax properties on the printed substrate. Granules also aid in achieving controlled rheological properties of inks, influencing factors like viscosity and flow behavior.
Flakes Form
Flake-form PE wax is characterized by thin, flat pieces resembling small flakes. Ovaj obrazac nudi jedinstvenu kombinaciju atributa. Veća površina ljuskica u usporedbi s granulama može poboljšati interakciju između voska i ostalih komponenti tinte, što rezultira poboljšanom kompatibilnošću i stabilnošću.
Grudasti oblik
Grudasti PE vosak sastoji se od nepravilnog oblika, veće komade. Iako je rjeđi od ostalih oblika, grudice mogu biti korisne u određenim scenarijima. Grude mogu biti praktičnije za skladištenje i rukovanje, posebno za veliku proizvodnju. Međutim, mogu zahtijevati dodatne korake obrade, kao što je topljenje ili razbijanje, kako bi se postigla dosljedna disperzija unutar formulacija tinte.
Čemu se koristi PE vosak u tiskarskim bojama?
Anti-sedimentacija
Tinte za tiskanje često se sastoje od složene mješavine pigmenata, veziva, otapala, i aditiva. The tendency of solid particles to settle at the bottom of the ink container can pose significant challenges. Sedimentation can result in ink inhomogeneity, altered color concentrations, and compromised print quality. Sedimentation can lead to issues during the printing process itself, such as inconsistent flow rates and clogging of printing equipment.
When added to ink formulations, PE Wax particles disperse evenly throughout the mixture, creating a barrier that impedes the settling of solid components. The wax particles act as stabilizers, preventing agglomeration and providing a consistent suspension of pigments and other additives within the ink and make it uniform and stable, even when stored for extended periods.
Matting Effect
PE wax achieves the matting effect through its unique ability to disperse within the ink and form a fine, consistent microstructure on the surface of the printed material. This microstructure scatters light, reducing the reflectivity and glossiness of the surface. The degree of matting achieved can be tailored by adjusting the concentration and particle size of the PE Wax in the ink formulation.
Anti-Adhesive
PE Wax achieves its anti-adhesive effect by forming a micro-thin layer on the surface of the printed material. This layer acts as a barrier that reduces the affinity of the ink to adhere to other surfaces. Kao rezultat, printed materials are less likely to stick together, smudge, or transfer ink onto adjacent surfaces during handling or stacking.
The anti-adhesive properties of PE Wax extend to various printing applications, including packaging, labels, and publications. In packaging, for example, PE Wax helps prevent printed packaging materials from sticking together during storage, transportation, or consumer use. This ensures that packaged products remain visually appealing and free from defects that could arise from ink transfer or smudging.
Anti-Sagging
PE Wax achieves its anti-sagging effect through its ability to disperse evenly within the ink formulation. By integrating PE Wax particles, the ink gains enhanced viscosity control and thixotropy. Thixotropy refers to the property where the ink’s viscosity decreases under the influence of shear and then recovers when shear forces are removed.
PE Wax contributes to the precise positioning of metallic pigments within the ink formulation. The wax particles create a stable suspension that prevents the pigments from sinking or clustering, ensuring an even distribution across the printed surface. This is essential for achieving the desired metallic effects, such as shimmer, sparkle, or luster, that enhance the visual appeal of printed materials.
PE wax’s ability to disperse in aromatic and aliphatic solvents further enhances its efficacy in addressing anti-settling challenges. These solvents optimize the distribution of the wax within the ink, contributing to improved stability and anti-sagging properties.
Caking Reduction
Caking or agglomeration refers to the undesirable clumping or sticking together of solid particles within the ink formulation. To se može dogoditi zbog čimbenika poput upijanja vlage, mehaničko miješanje, ili nekompatibilne interakcije između komponenti tinte. Prisutnost stvrdnutih čestica može dovesti do poteškoća u raspršivanju tinte, promijenjena konzistencija tinte, and compromised print quality.
PE vosak učinkovito rješava problem stvrdnjavanja svojom sposobnošću raspršivanja unutar formulacije tinte. Kada se u tintu doda PE vosak, njegove čestice stvaraju fizičku barijeru između ostalih čvrstih komponenti. Ova barijera sprječava da krute čestice dođu u izravan kontakt i lijepe se zajedno. Kao rezultat, zgrudnjavanje je svedeno na minimum, a tinta zadržava svoju jednolikost i postojanost tijekom vremena.
Otpornost na mrlje
Kada je PE vosak ugrađen u formulaciju tinte, njegove se čestice raspršuju unutar tinte i stvaraju mikrotanak sloj na površini otisnutog materijala. This layer acts as a shield against the penetration and adherence of substances that might cause staining. The wax’s hydrophobic nature repels liquids, preventing them from soaking into the material and leaving unsightly marks.
The stain resistance provided by PE Wax is particularly advantageous in applications where printed materials may come into contact with liquids, oils, ili drugih potencijalnih zagađivača. Na primjer, na etiketama ili ambalaži za hranu, pića, ili kozmetike, svojstva PE voska otporna na mrlje pomažu u održavanju vizualne privlačnosti ispisanog sadržaja čak i u izazovnim okruženjima.