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

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Problems solved by technology

[0006] In the prior art, there are few studies on improving t

Method used

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

Examples

Experimental program
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Example Embodiment

[0030] Example 1:

[0031] A production process for high temperature resistant and high viscosity label stickers includes the following steps:

[0032] (1) Mix octylphenol, ethylene glycol, appropriate amount of propylene oxide, and γ-alumina supported sodium hydroxide catalyst with stirring. When the reaction is initiated, add the remaining propylene oxide in multiple portions and react at 140°C to obtain Intermediate A, adding 35% of its mass deionized water to the naturally cooled Intermediate A, heating to 90°C and stirring for 40 minutes, and then separating and removing the water phase to obtain Intermediate B. Add concentrated water to Intermediate B. Sulfuric acid, stir for 10min, distill water at high temperature under reduced pressure for 6h, and slowly add B(C 6 F 5 ) 3 The catalyst is heated and reacted for 4 hours and then filtered with suction, washed with water to neutrality, and then distilled again at high temperature and reduced pressure for 6 hours to obtain acti...

Example Embodiment

[0039] Example 2:

[0040] A production process for high temperature resistant and high viscosity label stickers includes the following steps:

[0041] (1) Mix octyl phenol, ethylene glycol, appropriate amount of propylene oxide, and γ-alumina supported sodium bicarbonate catalyst. When the reaction is initiated, add the remaining propylene oxide in multiple portions and react at 150°C to obtain Intermediate A, add 40% of its mass deionized water to the naturally cooled Intermediate A, raise the temperature to 90°C and stir for 33 min, then separate the water phase to obtain Intermediate B. Add concentrated water to Intermediate B. Sulfuric acid, stir for 20min, distill water under high temperature and reduced pressure for 10h, and slowly add B(C 6 F 5 ) 3 The catalyst is heated and reacted for 4 hours and then filtered with suction, washed with water to neutral, and then distilled again at high temperature and reduced pressure for 10 hours to obtain active polyether polyol;

[0042...

Example Embodiment

[0048] Example 3:

[0049] A production process for high temperature resistant and high viscosity label stickers includes the following steps:

[0050] (1) Mix octylphenol, ethylene glycol, appropriate amount of propylene oxide, and γ-alumina supported sodium carbonate catalyst. When the reaction is initiated, add the remaining propylene oxide in multiple portions. For body A, add 38% deionized water of its mass to the naturally cooled Intermediate A, heat to 85°C and stir for 50 minutes, and then separate the water phase to obtain Intermediate B. Add concentrated sulfuric acid to Intermediate B , After stirring for 20 minutes, distill water at high temperature and reduced pressure for 6 hours, and slowly add B(C 6 F 5 ) 3 The catalyst is heated for 5 hours and then filtered with suction, washed with water to neutral, and then distilled again at high temperature and reduced pressure for 10 hours to obtain active polyether polyol;

[0051] (2) Mix the active polyether polyol and dime...

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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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