Strong wet friction resistant thermosensitive film and manufacturing method thereof

A manufacturing method and wet rubbing technology, applied in the directions of copying/marking methods, printing, etc., can solve the problems of hydrophilicity affecting wet friction resistance, film layer cross-linking degree is not very good, affecting product printing performance, etc., to achieve excellent use. value, good printing requirements, the effect of improving the protection performance

Active Publication Date: 2019-08-09
JIANGSU WANBAO RUIDA HI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All coatings are water-based system coatings. After coating, the coatings are dried by hot air to form a film to make the coatings have certain water resistance and wet friction resistance. However, the resin emulsion or PVA used in water-based system coatings has certain hydrophilicity. The degree of cross-linking of the film layer after drying is not very good, and its hydrophilicity will still affect the wet friction resistance after soaking in water
At the same time, in order to achieve relatively good coating fastness, the proportion of adhesive dosage in each coating process formula is generally set relatively large, which will affect the printing performance of the product, and it is difficult to adapt to equipment with low printing energy

Method used

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  • Strong wet friction resistant thermosensitive film and manufacturing method thereof

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Effect test

Embodiment 1

[0033] A heat-sensitive film resistant to strong wet friction, such as figure 1 As shown, it includes a base film 1 , a primer layer 2 , a heat-sensitive layer 3 , a water-resistant layer 4 and a print adaptation layer 5 from bottom to top. Wherein, the base film is a glossy-matte or double-sided glossy or double-sided matte BOPP original film; the primer layer 2 is coated with acrylic resin or a mixture of acrylic resin and hollow spherical plastic pigments. ; The heat-sensitive layer 3 is coated with a coating containing acrylic resin and / or modified polyvinyl alcohol; the water-resistant layer 4 is coated with a water-based UV coating; the print adaptation layer 5 is coated with a component containing Zinc stearate lubricant, water-washed kaolin, water-based acrylic resin, modified polyvinyl alcohol and cross-linking agent are coated. And the solid content of acrylic resin in the primer layer 2 accounts for more than 50% of the total solid content of the layer; the solid c...

Embodiment 2

[0034] Embodiment 2: prepare primer coating

[0035]First, weigh the components of the primer coating in the following parts by weight, hollow ball: 30-45 parts, acrylic resin emulsion: 50-65 parts, calcium stearate lubricant: 3-5 parts, defoamer: 1-5 parts 2 servings. Then, add hollow balls into the preparation tank, start stirring, then add water-based acrylic resin emulsion, calcium stearate lubricant and defoamer, stir for 40 minutes at a speed of 100-150 rpm, measure the solid content of the coating, and form a primer Cloth liquid, set aside.

Embodiment 3

[0036] Embodiment 3: preparation of inorganic pigment dispersion liquid

[0037] First, weigh the components of the inorganic pigment dispersion liquid in the following parts by weight: inorganic dispersant: 1-2 parts, polyether defoamer: 0.3-0.5 parts, light calcium carbonate: 98-99 parts. Then, add water to the dispersion tank, start stirring, add inorganic dispersant, defoamer, and light calcium carbonate, disperse at high speed for 60 minutes, and form a pigment dispersion liquid for later use.

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Abstract

The invention discloses a strong wet friction resistant thermosensitive film and a manufacturing method thereof. The film is manufactured by sequentially coating a primer layer, a thermosensitive layer, a water-resistant layer and a printing adaptive layer on a BOPP base film, wherein the primer layer, the thermosensitive layer and the printing adaptive layer are all water-based coating systems; after coating, a hot air drying mode is adopted for production; and as water-based UV painting, the water-resistant layer is subjected to hot air drying after coating for drying the moisture, and thenis further cured by a UV lamp. The film product is capable of better adapting to printing requirements of different printing equipment and to printing ink, the printed images have very strong wet friction resistance, and the protection performance of thermosensitive film images is improved.

Description

technical field [0001] The invention relates to a heat-sensitive film resistant to strong wet friction and a manufacturing method thereof. [0002] technical background [0003] With the application of heat-sensitive printing materials more and more widely, the consumption of heat-sensitive films has increased rapidly. For example, the demand for heat-sensitive films in aquatic products and frozen foods has developed rapidly recently. Due to the application characteristics of aquatic products and frozen foods, they are exposed to water during the freezing, processing and transportation of commodities, which have high requirements on the wet friction resistance of the image of the thermal film. [0004] Traditional heat-sensitive film products are generally coated with water-based coatings. At present, three coating structures are commonly used for process design, that is, base film, primer layer, heat-sensitive layer, and protective layer from bottom to top. All coatings are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/385C09D133/04C09D129/04C09D7/61C09D7/63
CPCB41M5/3858C09D133/04C09D129/04C09D7/61C09D7/63C08L29/04C08K13/02C08K3/346C08K5/098C08L33/04
Inventor 王道力唐宏磊钟亚伍亓华利
Owner JIANGSU WANBAO RUIDA HI TECH CO LTD
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