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Production process of label sticker which is resistant to high temperature and high in viscosity

A production process and high-viscosity technology, applied in the direction of cardboard items, etc., to achieve the effects of less residue, improved cross-linking degree, and improved peel strength

Active Publication Date: 2019-01-18
杭州大唐印刷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, there are few studies on improving the high temperature resistance and viscosity of label stickers

Method used

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  • Production process of label sticker which is resistant to high temperature and high in viscosity

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Experimental program
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Effect test

Embodiment 1

[0031] A production process for a high-temperature-resistant high-viscosity label sticker, comprising the following steps:

[0032] (1) Mix and stir octylphenol, ethylene glycol, appropriate amount of propylene oxide, and γ-alumina-supported sodium hydroxide catalyst. When the reaction is triggered, add the remaining propylene oxide several times, and react at 140°C to obtain For intermediate A, add 35% deionized water of its mass to intermediate A after natural cooling, raise the temperature to 90°C and stir for 40 minutes, then separate and remove the water phase to obtain intermediate B, add concentrated Sulfuric acid, after stirring for 10 minutes, distill water under high temperature and reduced pressure for 6 hours, cool down to 38°C and slowly add B (C 6 f 5 ) 3 Catalyst, heat preservation reaction for 4 hours, suction filtration, washing with water until neutral, and then distilling water at high temperature and reduced pressure for 6 hours to obtain active polyether...

Embodiment 2

[0040] A production process for a high-temperature-resistant high-viscosity label sticker, comprising the following steps:

[0041] (1) Mix and stir octylphenol, ethylene glycol, appropriate amount of propylene oxide, and γ-alumina-supported sodium bicarbonate catalyst. When the reaction is triggered, add the remaining propylene oxide several times, and react at 150°C to obtain For intermediate A, add 40% deionized water of its mass to intermediate A after natural cooling, raise the temperature to 90°C and stir for 33 minutes, then separate the liquid to remove the water phase to obtain intermediate B, add concentrated Sulfuric acid, after stirring for 20min, distill water under high temperature and reduced pressure for 10h, cool down to 38°C and slowly add B(C 6 f 5 ) 3 Catalyst, heat preservation reaction for 4 hours, suction filtration, washing with water until neutral, and then distilling water at high temperature and reduced pressure for 10 hours to obtain active polyet...

Embodiment 3

[0049] A production process for a high-temperature-resistant high-viscosity label sticker, comprising the following steps:

[0050] (1) Mix and stir octylphenol, ethylene glycol, appropriate amount of propylene oxide, and γ-alumina-supported sodium carbonate catalyst. When the reaction is triggered, add the remaining propylene oxide in several times, and react at 130°C to obtain an intermediate Body A, add 38% of its mass deionized water to the naturally cooled Intermediate A, raise the temperature to 85°C and stir for 50 minutes, then separate the liquid to remove the water phase to obtain Intermediate B, add concentrated sulfuric acid to Intermediate B , after stirring for 20min, distill water under high temperature and reduced pressure for 6h, cool down to 40°C and slowly add B (C 6 f 5 ) 3 Catalyst, heat preservation reaction for 5 hours, suction filtration, washing with water until neutral, and then distilling water at high temperature and reduced pressure for 10 hours ...

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Abstract

The invention provides a production process of a label sticker which is resistant to high temperature and high in viscosity and relates to the technical field of label stickers. The production processincludes the following steps of (1) preparing activated polyether polyol; (2) preparing a polyurethane emulsion, adding the polyurethane emulsion, isobutyl acrylate, modified nanometer silicon dioxide, a crosslinking agent and azodiisobutyronitrile into a reaction still, and raising the temperature to 80-85 DEG C for a reaction for 5-8 hours to obtain a copolymer, namely an emulsion-type pressure-sensitive adhesive; (3) on a coating machine, utilizing a coating cutter to uniformly coating the back of copperplate surface paper with the copolymer, namely the emulsion-type pressure-sensitive adhesive, bonding the copperplate surface paper to Glassine backing paper to obtain a label sticker semi-finished product, making the label stick semi-finished product pass through a drying channel whichis 80-120 cm long at the speed of 20-30 cm / min under the temperature of 70-75 DEG C, and then obtaining a label sticker finished product, wherein the thickness of an adhesive film is 0.04-0.15 mm. The label sticker applying the copolymer, namely the emulsion-type pressure-sensitive adhesive, is resistant to high temperature, high in viscosity, resistant to a damp and hot environment and long in bonding time.

Description

technical field [0001] The invention relates to the technical field of label stickers, in particular to a production process for high-temperature-resistant and high-viscosity label stickers. Background technique [0002] The label sticker is different from the traditional label. It has the advantages of no need to brush glue, no paste, no need to dip in water, no pollution, and save labeling time. It has a wide range of applications and is convenient and quick. Pressure-sensitive adhesive is used as its adhesive material, and the adhesive performance of labels and stickers is closely related to it. The existing pressure-sensitive adhesives are not resistant to high temperature, and the viscosity decreases over time, causing the labels and stickers to fall off, which brings inconvenience to daily work and life. [0003] Chinese patent CN 102518003 A discloses a method for preparing a halogen-free flame-retardant polyester label paper, comprising the following steps: using but...

Claims

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Application Information

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IPC IPC(8): B31D1/02
CPCB31D1/02
Inventor 陈国礼陈国发陈国炎吴兴龙
Owner 杭州大唐印刷有限公司
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