Qual è il rivestimento della carta di sublimazione?

Creato il 08.01
涂层在升华纸上是涂覆在纸张一侧的特殊配方层。其主要目的是在打印后暂时保持液态升华墨水,然后在转印过程中施加热量和压力时几乎将所有墨水作为蒸汽释放。
这里是涂层的关键组成部分和功能的详细说明:
1. Binder: 主要成分,通常是改性淀粉或合成聚合物(如PVA - 聚乙烯醇)。这形成了基体,在打印后将墨水滴固定在纸面上。
  • Crucial Property: It must form a 弱的、临时的结合 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. 释放剂:这些是旨在促进墨水在热和压力下从纸张到基材的干净和完全转移的添加剂。它们防止墨水与纸张涂层本身的结合过于紧密。
  • Goal: Achieve near 100% ink release for maximum color vibrancy and efficiency.
3. 尺寸剂/障碍物:这些组件控制墨滴在接触纸张时的吸收和扩散。
  • Purpose: 他们创建了一个轻微的屏障,防止墨水过深地渗透到纸纤维中。这使得墨水保持在表面附近,便于蒸发和转移。
  • Benefit: Results in sharper image definition, prevents "bleeding" or feathering of ink dots, and improves color density.
4. 快干剂:帮助墨水在打印后迅速在纸面上干燥。这可以防止模糊,并允许更快的处理和压印。
5. 缺少某些添加剂:与旨在永久吸收墨水的普通喷墨纸涂层不同(这些涂层通常含有二氧化硅、铝土矿或用于染料固定的特殊聚合物),升华纸涂层故意避免这些永久固定剂。纸上的永久固定与所需的正好相反。
Why is this Coating SO Important?
  • 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: 最大化墨水转移到基材的量,减少浪费。
  • Fast Drying: 提高工作流程速度。
  • 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.
本质上:升华纸涂层充当液态墨水的复杂临时停车场。它精确地保持墨水在打印后落下的位置,快速干燥,然后在热量将其转化为气体时几乎瞬间释放出所有墨水,使其渗透到目标基材中并创建出持久而生动的图像。粘合剂、释放剂和定型剂的具体配方是高性能升华纸与普通纸甚至其他类型喷墨转印纸的区别所在。
Close-up of shimmering, sparkly light weight paper surface.
Ray
Ferrill
Evelyn