Surface sizing with sizing agents and glycol ethers
OwnerDaniel F. Varnellinventor
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Abstract
In this invention a composition is applied to the surface of paper comprising a glycol ether based polymer that provides enhanced ink-jet print quality. The advantage of using the composition is that it improves ink-jet printing on the paper without significant loss of water hold-out. More specifically, the paper is uncoated and has been treated on the surface with the following materials and dried to the point of usefulness. These materials are: 1) one or more compounds that increase water hold-out. These are known as sizing agents, 2) starch, 3) A glycol ether based polymer.
Claims19
An uncoated cellulosic paper having a front and a back surface, having been treated on at least one surface with:
- a) at least one sizing agent present in an amount of between 0.01 to 0.3% based on dry weight of paper;
- b) starch present in an amount of between 1 to 8% based on dry weight of paper
- c) a glycol ether based polymer present in an amount less than 0.025% based on dry weight of paper
- and optionally, a divalent metal salt.
An aqueous composition for surface treating paper through a size press, which composition contains:
- a) Sizing agent in an amount of 0.03-1.0%,
- b) starch present in an amount of 1.5-12%
- c) a glycol ether based polymer present in an amount of less than 0.25% of the composition.
Aqueous composition containing a glycol ether based polymer and an emulsified sizing agent where the glycol ether based polymer is present in an amount of 3-50% based on amount of sizing agent.
Dependencies are inferred from the claim text.