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Medical-packaging use paper-plastic lamination adhesive based on waterborne epoxy resin type and preparation method thereof

A water-based epoxy resin, paper-plastic composite technology, applied in the direction of epoxy resin glue, adhesive, wax adhesive, etc., can solve the problems of low peel strength, poor water resistance, high temperature resistance, etc., and achieve smooth hand feeling and water resistance Increased, high-adhesive effect

Inactive Publication Date: 2013-10-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the invention is to provide a water-based epoxy adhesive for the problems of poor initial adhesion, low peel strength, poor water resistance, and high temperature resistance caused by the large polarity difference between paper and plastic film. Resin-type paper-plastic laminating adhesive for medical packaging and a preparation method thereof, the obtained laminating adhesive has high temperature resistance, water resistance, no volatile solvent, and the bonding surface is dry after separation of paper and plastic, and does not stick to paper dust

Method used

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  • Medical-packaging use paper-plastic lamination adhesive based on waterborne epoxy resin type and preparation method thereof
  • Medical-packaging use paper-plastic lamination adhesive based on waterborne epoxy resin type and preparation method thereof
  • Medical-packaging use paper-plastic lamination adhesive based on waterborne epoxy resin type and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] (1) Take 4g of carnauba wax, 3g of South African Sasol wax, and 3g of ozokerite wax and put them into the reactor, dissolve all the mixed wax at 120°C and a stirring speed of 300rpm, and add 2g of triethanolamine; another 2g of OP ‐10, 2g fatty alcohol polyoxyethylene ether (AEO), 1g fatty alcohol polyoxyethylene ether sulfate (AES) and 2g sodium dodecyl sulfate (SDS), dissolved together in 40g deionized water, sheared at 2000rpm Slowly add it to the mixed wax while dispersing, and after dispersing for 50 minutes, a wax emulsion is obtained.

[0058] (2) Mix the wax emulsion obtained in step (1) with 8g of water-based epoxy resin emulsion 3522 (Guangzhou Libaoshi Trade Development Co., Ltd.) and place it in a dispersion kettle. Add 0.3g of it at room temperature at a stirring speed of 600rpm SPA‐202, disperse for 10 minutes.

[0059] (3) After adjusting the stirring speed in step (2) to 200rpm, add 10g of natural latex and disperse for 90min.

[0060] (4) Keep the sti...

Embodiment 2

[0073] (1) Put 10g of beeswax, 5g of liquid paraffin, and 5g of microcrystalline wax into the reactor, dissolve the mixed wax at 60°C and a stirring speed of 400rpm, and add 3g of triethanolamine; Oxyethylene ether (AEO), 2g sodium dodecylbenzenesulfonate (SDBS), 2g sodium dodecyl sulfate (SDS), 1g alkylphenol polyoxyethylene (10) ether (OP‐10) and dissolve together In 60g of deionized water, slowly add to the mixed wax under 3000rpm shear dispersion, and after dispersing for 30min, a wax emulsion is obtained.

[0074] (2) Mix the wax emulsion obtained in step (1) with 15g of water-based epoxy resin emulsion 3520‐WY‐55A (Guangzhou Libaoshi Trade Development Co., Ltd.) Add 0.1g BKY‐045, 0.2g DEUCHEM090, and disperse for 60min.

[0075] (3) After adjusting the stirring speed in step (2) to 300rpm, add 20g of natural latex and disperse for 80min.

[0076] (4) Keep the stirring speed in step (3) constant, add 3g of terpene resin emulsion, 3g of water-based rosin glyceride emulsi...

Embodiment 3

[0089] (1) Put 30g of modified montan wax (Beijing Kangli, model s) into the reactor, melt the epoxy resin and wax at 100°C and a stirring speed of 500rpm, and add 5g of triethanolamine; another 2g of Tween-20 , 2g Span‐20, 1g fatty alcohol polyoxyethylene ether sulfate (AES), 1g sodium dodecyl sulfate (SDS) were dissolved in 50g deionized water together, and slowly added to the mixed emulsion under the shear dispersion of 2500rpm , after dispersing for 30min, a wax emulsion was obtained.

[0090] (2) Mix the wax emulsion obtained in step (1) with 12g of water-based epoxy resin emulsion 3540‐WY‐55A (Guangzhou Libaoshi Trade Development Co., Ltd.) Add 0.4g DEUCHEM091 at room temperature and disperse for 15min.

[0091] (3) After adjusting the stirring speed in step (2) to 300rpm, add 20g of natural latex and disperse for 80min.

[0092] (4) Keep the stirring speed in step (3) constant, add 10g of water-based rosin glyceride emulsion to disperse for 15min.

[0093] (5) Keep t...

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Abstract

The invention discloses a medical-packaging use paper-plastic lamination adhesive based on a waterborne epoxy resin type and a preparation method thereof. The paper-plastic lamination adhesive comprises: by mass, 15-60 parts of wax emulsion, 5-30 of waterborne epoxy resin emulsion, 5-30 parts of natural latex, 5-20 parts of water, 5-15 parts of tackifying resin, 0.2-0.5 parts of a defoaming agent and 0.2-0.5 parts of a thickening agent. The paper-plastic lamination adhesive is prepared by the following steps: mixing the wax emulsion and the waterborne epoxy resin emulsion, adding the defoaming agent at the room temperature, and dispersing with a stirring speed of 500-1000 rpm; then adjusting the stirring speed to 200-300 rpm; adding the natural latex and dispersing; adding the tackifying resin and dispersing; further adding the water and dispersing; and finally, adding the thickening agent, adjusting system viscosity to construction viscosity, then obtaining a medical-packaging use paper-plastic lamination adhesive product. The medical-packaging use paper-plastic lamination adhesive product has the effects of high-temperature resistance, water resistance, no volatile solvent, dry bonding surfaces after paper-plastic separation and no sticking of paper scraps.

Description

technical field [0001] The invention relates to a paper-plastic composite glue, in particular to a water-based epoxy resin-based paper-plastic composite glue for medical packaging and a preparation method thereof; belonging to the technical field of adhesives. Background technique [0002] The existing water-based paper-plastic laminating adhesives used for medical packaging materials in the domestic market often have some disadvantages: for example, medical packaging materials need to be sterilized by high-temperature water steam, and many laminating adhesives are often inferior due to high temperature resistance and water resistance. Poor, the adhesion force is greatly reduced during the sterilization process, which in turn leads to a decrease in peel strength. Therefore, it is imperative to develop water-based paper-plastic laminating adhesive for medical packaging materials with good high temperature resistance and good water resistance. [0003] Although there are many...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J107/02C09J191/06B32B7/12
Inventor 蔡智奇孟浩文秀芳皮丕辉薛超霞徐守萍程江
Owner SOUTH CHINA UNIV OF TECH
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