Single-waterproof temperature-sensitive label-use paper

Abstract

The invention provides a single-waterproof temperature-sensitive label-use paper which is characterized in that the label-use paper is composed of the components of a temperature-sensitive color-development layer, a pre-coating layer, and a high-quality base paper layer, which are sequentially arranged from top to bottom. According to the single-waterproof temperature-sensitive label-use paper, pre-coating liquid and temperature-sensitive color-development layer coating liquid are pumped into a coating machine feeding tank, and are used for coating the high-quality base paper. One-step coating is finished, and the paper is fetched and cut, such that finished product is obtained. The temperature-sensitive color-development layer coating liquid adopts a polycarbonate-grade phenolic substance or a diphenyl sulfone substance as a color developing agent. Compared with prior arts, coated and fetched finished product paper of the single-waterproof temperature-sensitive label-use paper is already aged. The aging time is short, and the paper has higher waterproof functions, wherein fading is prevented when the paper is wetted and abraded. With the paper, color-development capacity preservation time of temperature-sensitive paper is longer. No protective layer is needed to be coated, such that production processes are reduced. The label-use paper has the characteristics of improved production efficiency, fast production speed, lower cost, and more stable product characteristics.

Description

technical field [0001] The invention belongs to the field of thermal label paper, in particular to a single waterproof thermal label paper, which is used in supermarket retail, logistics, catering, express delivery and other industries. Background technique [0002] The waterproof function of the existing thermal label paper, such as the patent number: 201120576657, needs to be coated with a thermally conductive film with waterproofness, or some need to be coated with a protective layer to achieve the purpose of waterproofing, after coating, it needs to be placed under certain environmental conditions for a certain period of time curing Only after the waterproof function. At the same time, the waterproof effect of the existing thermal label paper is not obvious (it is easy to fade after wet water friction). If better waterproof is required, a protective layer needs to be applied, and a production process is added, and the curing time is too long, resulting in low production ...

AI Technical Summary

Problems solved by technology

At the same time, the waterproof effect of the existing heat-sensitive label paper is not obvious enough (it is easy to fade after being rubbed with wet water). If better waterproofing is required, a protective layer needs to be coated, adding a production process, and the aging time is too long, resulting in low production efficiency.

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