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Preparation method of self-adhesive label

A label and hot-melt adhesive technology, applied in the field of self-adhesive labels, can solve the problems of product overflow, affecting the use of labels and appearance quality, etc., achieving the effect of convenient use, convenient production, and solving the phenomenon of glue overflow.

Active Publication Date: 2017-03-15
CHINA COMMERCE NETWORKS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned self-adhesive label preparation methods are all online gluing, especially for self-adhesive labels using hot-melt pressing surface adhesive, because the process of hot-melt pressing surface adhesive from molten state to vitrification is relatively slow, it is easy to cause product overflow. Glue, which affects the use and appearance quality of the label

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of self-adhesive label comprises the following steps:

[0029] (1) Use two kinds of release paper with different release force at a ratio of 1:2.5 as raw materials, use the release paper with large release force as the base material, put the release paper on the unwinding reel, and set The tension of the release paper unwinding shaft is 120N if the release force is relatively large, and the tension of the release paper unwinding shaft is 25N if the release force is small. Heat up the temperature of the rubber box of the equipment to 165°C to melt the pressure-sensitive adhesive. Turn on the coating machine and set The amount of glue applied is 18g / square meter, the coating width is 250mm, and the coating speed is 55m / min. The hot melt adhesive is evenly coated on the substrate through the coating head, and the substrate and release force after coating are relatively small. The release paper is pressed together (composited) by two horizontal rubber...

Embodiment 2

[0032] The preparation method of self-adhesive label comprises the following steps:

[0033] (1) Use two kinds of release paper with different release force at a ratio of 1:5 as raw materials, use the release paper with large release force as the base material, put the release paper on the unwinding reel, set The tension of the release paper unwinding shaft is 100N when the release force is relatively large, and the tension of the release paper unwinding shaft is 15N when the release force is small. Heat up the temperature of the rubber box of the equipment to 165°C to melt the pressure-sensitive adhesive, turn on the coater, and set The amount of glue applied is 12g / square meter, the coating width is 40mm, and the coating speed is 50m / min. The hot melt adhesive is evenly coated on the substrate through the coating head, and the substrate and release force after coating are small. The release paper is pressed together (composited) by two horizontal rubber rollers to form a dou...

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Abstract

The invention belongs to the field of self-adhesive labels, and particularly relates to a preparation method of a self-adhesive label. The preparation method comprises the steps of putting release paper into an unreeling shaft by adopting two kinds of release paper with different release force as raw materials, and by adopting the release paper with relatively high release paper as a base material, melting a pressure-sensitive adhesive, starting up a coating machine, coating the base material with the hot melt adhesive by a coating head uniformly, laminating the base material after adhesive coating and the release paper with relatively low release force together by two adhesive rollers, reeling the combined double-faced adhesive by a reeling shaft, placing at normal temperature so as to prepare the hot melt pressure-sensitive double-faced adhesive material; stripping the release paper with relatively low release force in the hot melt pressure-sensitive double-faced adhesive layer, exposing the coated pressure-sensitive adhesive layer, laminating the label surface layer and the exposed pressure-sensitive adhesive layer by the adhesive roller, and then carrying out automatic die cutting and reeling to obtain a product. The self-adhesive label is convenient to produce by utilizing the difference of the stripping intensity of the release paper and the technical characteristics of the pressure-sensitive adhesive, can meet the technical requirement of cold combination of reeled materials so as to solve the adhesive overflow phenomenon generated by thermal combination.

Description

technical field [0001] The invention belongs to the field of self-adhesive labels, and in particular relates to a preparation method of self-adhesive labels. Background technique [0002] According to its properties and dispersion medium, pressure-sensitive adhesives can be divided into water-soluble pressure-sensitive adhesives, solvent-based pressure-sensitive adhesives, emulsion-type pressure-sensitive adhesives, hot-melt pressure-sensitive adhesives and calenderable pressure-sensitive adhesives. Among them, water-soluble pressure-sensitive adhesives, hot-melt pressure-sensitive adhesives and solvent-based pressure-sensitive adhesives are the mainstream pressure-sensitive adhesive products in the market, and hot-melt pressure-sensitive adhesives are the latest developed pressure-sensitive adhesive varieties. [0003] Solvent-based pressure-sensitive adhesives need to be coated on a dry compound machine and pass through a drying tunnel to evaporate the solvent before becom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/12
CPCB32B37/1284
Inventor 巩建敏许丕刚巩坤牟晓辉张凯赵林
Owner CHINA COMMERCE NETWORKS SHANGHAI
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