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Multi-proof thermosensitive paper free of top coating and manufacture process thereof

A production process and heat-proof technology, applied in papermaking, coating, paper coating, etc., can solve the problems of being unsuitable for low production costs, and achieve the effects of stable properties, reduced coating processes, and strong weather resistance.

Inactive Publication Date: 2014-09-24
HUNAN HENGHAN HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In summary, the above methods are not suitable for producing multi-proof heat-sensitive paper with low cost, water resistance, oil resistance, plasticizer resistance, light resistance, high temperature resistance, and dry / wet friction resistance.

Method used

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  • Multi-proof thermosensitive paper free of top coating and manufacture process thereof
  • Multi-proof thermosensitive paper free of top coating and manufacture process thereof

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Embodiment Construction

[0015] This specific embodiment adopts the following technical scheme: it comprises base paper 1, precoat 2, heat-sensitive coating 3 and back coat 4; Sensitive coating 3, the bottom of base paper 1 is provided with back coating 4.

[0016] The manufacturing process of this specific embodiment is as follows: the upper part of the base paper is coated with a pre-coat layer, the upper part of the pre-coat layer is coated with a heat-sensitive top coat layer, and the lower part of the base paper is coated with a back coat layer.

[0017] The color developer in the heat-sensitive top coat is a derivative of urea or thiourea, or a mixture with phenylsulfones and polyphenols, and the product reacted with a leuco dye has strong weather resistance, including water resistance , Oil resistance, plasticizer resistance, light resistance, high temperature resistance, dry / wet friction resistance, etc.

[0018] The base paper weight is 40~160g / m 2 , frontal smoothness 50-100s, Cobb 30s 0-...

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Abstract

The invention discloses multi-proof thermosensitive paper free of top coating and a manufacture process of the multi-proof thermosensitive paper. The manufacture process of the multi-proof thermosensitive paper comprises the following steps: coating a pre-coating on the upper part of raw paper, coating a thermosensitive surface coating on the upper part of the pre-coating and coating a back coating on the lower part of the raw paper. A special color developing agent used by the manufacture process is stable in property; a product obtained after the color developing agent reacts with colorless dye is strong in weather resistance including water resistance, oil resistance, plasticizer resistance, light resistance, high temperature resistance, dry / wet friction resistance and on the like; according to the manufacture process, the coating process is reduced; the paper is strong in weather resistance after coating, calendering and discharging out of the machine, so that the paper can be stored for years; high-energy and low-energy printed handwriting barcodes are clear and low in cost, so that the application field of the thermosensitive paper can be expanded.

Description

Technical field: [0001] The invention relates to the technical field of heat-sensitive paper, in particular to a non-top-coated multi-proof heat-sensitive paper and a manufacturing process thereof. Background technique: [0002] The thermal paper currently on the market is mainly ordinary thermal paper, the coating layer only has pre-coating and thermal surface coating, and does not have the properties of water resistance, oil resistance, plasticizer resistance, light resistance, high temperature resistance, friction resistance, etc. Limit its application in the high-end field. However, the three-proof thermal paper such as Ricoh has a top-coated protective layer, which increases the coating process and cost, and the price is higher. Patent CN200910064962.2 discloses a top-coated high-temperature-resistant thermal paper, but it needs to be above 150°C to develop color, which is not suitable for the currently advocated low-energy printing and limits its application range. C...

Claims

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Application Information

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IPC IPC(8): D21H19/40D21H19/84D21H19/44
Inventor 喻建军王正红
Owner HUNAN HENGHAN HIGH TECH CO LTD
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