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Starch adhesive for packaging cartons

A technology for starch adhesives and cartons, which is applied in the direction of starch-derived adhesives, adhesive types, polymer adhesive additives, etc., which can solve the problems of poor water resistance, low bonding strength, and unsatisfied application requirements for packaging cartons problems such as high film strength, strong resistance to phase separation, and improved binding force

Inactive Publication Date: 2017-10-24
HEFEI LONGFA PACKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many classification methods of adhesives, which can be divided into thermosetting type, hot melt type, room temperature curing type, pressure sensitive type, etc. according to the application method; according to the application object, it can be divided into structural type, non-configuration or special adhesive; the connection form can be divided into It is water-soluble, water-emulsion, solvent-based, and various solid-state types; during the production and processing of packaging boxes, it is necessary to use adhesives to bond each cardboard together to form a packaging carton. The existing starch-based bonding The water resistance of the agent is poor, the bonding strength is low, and the application requirements in the packaging carton cannot be met

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of starch adhesive for packing carton is made by following steps:

[0018] (1) Preparation of starch liquid: Add 120 parts by weight of vegetable starch and 350 parts by weight of deionized water to the heated and stirred reactor and stir at high speed for 30 minutes, then add 1 part by weight of polyvinyl alcohol, stir well, and then heat to 80 ℃, heat preservation for 2 hours to obtain starch liquid;

[0019] (2) Activation treatment: Add aluminum potassium sulfate with 1.2% starch mass to the starch liquid, add it to a high-speed mixer and stir at a speed of 2000r / min for 1 hour, then use high-quality ammonia water to adjust the pH of the starch liquid to 8.8, and heat to Stir at 80°C for 30min at a speed of 350r / min, then use 350W ultrasonic treatment for 4min, then add ammonium persulfate of 0.12% of the starch liquid mass, stir evenly, and keep warm at 55°C for 20min to obtain a starch slurry;

[0020] (3) Add filler: add nano-titanium dioxide-coated nano-...

Embodiment 2

[0028] A kind of starch adhesive for packing carton is made by following steps:

[0029] (1) Preparation of starch liquid: add 120 parts by weight of vegetable starch and 420 parts by weight of deionized water to the heated and stirred reactor and stir at high speed for 40 minutes, then add 3 parts by weight of polyvinyl alcohol, stir well, and then heat to 90 ℃, heat preservation for 2 hours to obtain starch liquid;

[0030] (2) Activation treatment: Add aluminum potassium sulfate with 1.5% starch mass to the starch liquid, add it to a high-speed mixer and stir at a speed of 2000r / min for 1.5 hours, then use high-quality ammonia water to adjust the pH of the starch liquid to 9.0, and heat to 80°C, after stirring at 350r / min for 30min, use 350W ultrasonic treatment for 6min, then add ammonium persulfate with a mass of 0.12% of the starch liquid, stir evenly, and keep warm at 55°C for 20min to obtain starch slurry;

[0031] (3) Add filler: add nano-titanium dioxide-coated nano...

Embodiment 3

[0039] A kind of starch adhesive for packing carton is made by following steps:

[0040] (1) Preparation of starch liquid: Add 120 parts by weight of vegetable starch and 390 parts by weight of deionized water to the heated and stirred reactor and stir at high speed for 35 minutes, then add 1-3 parts by weight of polyvinyl alcohol, stir well, and then heat to 85°C and keep warm for 2 hours to obtain starch liquid;

[0041] (2) Activation treatment: Add aluminum potassium sulfate with a starch mass of 1.4% to the starch liquid, add it to a high-speed mixer and stir at a speed of 2000r / min for 1.2 hours, then use high-quality ammonia water to adjust the pH of the starch liquid to 8.9, and heat to Stir at 80°C for 30min at 350r / min, then use 350W ultrasonic treatment for 5min, then add ammonium persulfate with a mass of 0.12% of the starch liquid, stir evenly, and keep warm at 55°C for 20min to obtain a starch slurry;

[0042] (3) Add filler: add nano-titanium dioxide-coated nan...

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Abstract

The invention discloses a starch adhesive for packaging cartons and relates to the technical field of packaging. A preparation method comprises the steps as follows: (1) starch slurry preparation; (2) activation treatment; (3) filler addition: nano titania coated nano silica composite powder with the mass accounting for 2.4%-2.6% that of starch is added to starch slurry, the obtained material is stirred at the rotating speed of 2,500 r / min for 1 h, and starch mixed slurry is obtained; (4) a crosslinking reaction; (5) stabilization treatment. The prepared starch adhesive is uniform, stable and not prone to layering.

Description

technical field [0001] The invention belongs to the technical field of packaging, and in particular relates to a starch adhesive for packaging cartons. Background technique [0002] Adhesive bonding (bonding, bonding, cementing, gluing) refers to the technology of connecting the surfaces of homogeneous or heterogeneous objects together with adhesives, which has the characteristics of continuous stress distribution, light weight, or sealing, and low temperature in most processes . Gluing is especially suitable for the connection of different materials, different thicknesses, ultra-thin specifications and complex components. Glue is developing the fastest in modern times and has a wide range of application industries. There are many classification methods of adhesives, which can be divided into thermosetting type, hot melt type, room temperature curing type, pressure sensitive type, etc. according to the application method; according to the application object, it can be divi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/06C09J11/04C09J11/08
CPCC09J103/06C08K2201/011C08L2205/025C09J11/04C09J11/08C08L3/08C08K9/10C08K3/36
Inventor 林悦敏
Owner HEFEI LONGFA PACKING CO LTD
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