Iyini i-coating ye-sublimation paper?
Kwadalwa ngo 08.01
Ihlo le-coating ku-sublimation paper iyisendlalelo esikhethekile esifakwe ohlangothini olulodwa lwephepha. Inhloso yayo eyinhloko ukuhlinzeka ngokugcina okwesikhashana i-ink ye-sublimation ewuketshezi ngemuva kokuphrinta, bese ikhulula cishe yonke le-ink njengomoya lapho kushiswa nokucindezelwa ngesikhathi senqubo yokudlulisa.
Here's a breakdown of the key components and functions of the coating:
1. Binder: Iphakhe eliyinhloko, ngokuvamile i-starch eguquliwe noma i-polymer eyenziwe ngokuqhubekayo (njenge-PVA - i-Polyvinyl Alcohol). Lokhu kwakha isisekelo esibamba ama-droplets we-inki endaweni phezu kobuso bephepha ngemuva kokuphrinta.
- Crucial Property: It must form a weak, temporary bond with the ink. This bond is strong enough to keep the ink on the paper while it's handled and dried, but weak enough to completely release the ink vapor when heated during pressing.
2. Release Agents: Lezi yizithako eziklanyelwe ukwenza kube lula nokuphelele ukudluliswa kwe-inki kusuka ephepheni kuya ku-substrate ngaphansi kokushisa nok pressure. Zivimbela i-inki ekubambeni kakhulu ephepheni lokumboza uqobo.
- Goal: Achieve near 100% ink release for maximum color vibrancy and efficiency.
3. Sizing Agents/Barriers: Lezi zinto zilawula ukumuncwa nokusabalala kwe-droplet ye-inki uma ihlula iphepha.
- Purpose: Ba se ba theha moeli o monyenyane, o thibela ink ho kenella haholo ka hare ho lifibers tsa pampiri. Sena se boloka ink e le haufi le bokaholimo moo e ka feshang habonolo le ho fetisetsoa.
- Benefit: Resultate in skärpare bilddefinition, förhindrar "blödning" eller fjäderformning av bläckpunkter och förbättrar färgtätheten.
4. Izinhlaka Zokushesha: Zisiza ukuthi i-inki yome ngokushesha ebusweni bephepha ngemva kokuphrinta. Lokhu kuvimba ukungcoliswa futhi kuvumela ukuphathwa nokucindezelwa okusheshayo.
5. Absence of Certain Additives: Unlike regular inkjet paper coatings designed to absorb ink permanently (which often contain silica, alumina, or special polymers for dye fixation), sublimation paper coatings deliberately avoid these permanent fixing agents. Permanent fixation on the paper is the opposite of what's needed.
Ngwhy le Coating le SO e bohlokwa hakaalo?
- High Ink Release: Essential for vibrant, saturated colors on the final product. Poor release leaves ink on the paper, resulting in dull, washed-out transfers.
- Sharp Image Detail: Controls ink spread, preventing bleeding and maintaining fine lines and details.
- Efficiency: Maximizes the amount of ink transferred to the substrate, reducing waste.
- Fast Drying: Improves workflow speed.
- Prevents Ghosting/Sticking: A good release coating minimizes the risk of the paper sticking to the substrate or leaving a faint residue ("ghosting") during transfer.
In essence: The sublimation paper coating acts as a sophisticated temporary parking lot for the liquid ink. It holds the ink precisely where it landed after printing, dries it quickly, and then lets go of virtually all of it instantly when heat turns it into a gas, allowing it to penetrate the target substrate and create a permanent, vibrant image. The specific formulation of binders, release agents, and sizing is what differentiates high-performance sublimation paper from regular paper or even other types of inkjet transfer papers.
Ray
Ferrill
Evelyn