Starch-based paperboard adhesive and preparation method thereof

An adhesive and starch technology, applied in the direction of amylose/pullulan adhesives, adhesive types, non-polymer adhesive additives, etc., can solve the unstable performance of adhesives and unstable performance of starch adhesives and other problems, to achieve the effect of reducing glue making steps, improving the reliability and stability of glue making, and reducing weighing errors

Inactive Publication Date: 2017-11-24
成都市九华义远包装有限公司
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the performance of the adhesive prepared by traditionally adding lye twice and adopting the one-step glue making method of stabilizing the viscosity of t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Starch-based paperboard adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] The starch-based paperboard adhesive of the present invention includes starch, a solvent for dissolving starch and preparing starch slurry, lye, and borax. The lye adjusts the pH value of the starch slurry to 8-9; and the starch is composed of amylose and amylopectin. Composition of starch, the mass of the amylose accounts for 15%-28% of the total mass of starch, the mass of the amylopectin accounts for 72%-85% of the total mass of starch; the lye is caustic soda with a concentration of 33.3%; The quality of starch accounts for 22%-25% of the total mass of the finished cardboard adhesive. The mass ratio of borax to starch is 0.007-0.012:1.000, and the mass ratio of the lye to starch is 0.061-0.071:1.000 .

[0027] Starch includes amylose and amylopectin. During the bonding process, due to the penetrating power of amylose molecules and the holding power of amylopectin molecules whose shape is like a branch, when the starch particles penetrate into the corr...

Example Embodiment

[0031] Example 2

[0032] The quality of the starch accounts for 25% of the finished cardboard adhesive, the mass ratio of the lye to the starch is 0.066:1.000, and the mass ratio of borax to the starch is 0.010:1.000. The present invention combines the existing glue making capacity, glue making time and adhesive parameters to optimize the optimal ratio, obtain the most cost-effective finished paperboard adhesive, and make the finished paperboard adhesive present 25% high solid content, 16 The characteristics of low viscosity in seconds and low gelatinization temperature of 53°C can effectively save energy and improve production efficiency.

Example Embodiment

[0033] Example 3

[0034] The preparation method of starch-based paperboard adhesive includes the following steps:

[0035] S1. Weigh the starch, dissolve the starch in a solvent at 36-38°C and stir to prepare a starch slurry;

[0036] S2. Add lye to the starch slurry in step S1, the temperature of the starch slurry is 36-38°C, adjust the pH value of the starch slurry to 8-9 to prepare a weakly alkaline starch slurry, and then continue to heat up and stir the starch slurry to The gelatinization temperature of starch slurry to prepare starch slurry;

[0037] S3, cooling the starch paste obtained in step S2 to 30° C., adding borax, and stirring to prepare a finished cardboard adhesive.

[0038] The solvent is a water solvent, and the lye is a caustic soda solution with a concentration of 33.3%.

[0039] In the present invention, a slight excess of lye is added at one time to make the starch slurry weakly alkaline, and the gelatinization reaction of starch under the action of the lye is ac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a starch-based paperboard adhesive and a preparation method thereof. The starch-based paperboard adhesive comprises starch, a solvent for dissolving starch and preparing starch slurry, alkali liquor and borax, wherein the alkali liquor is used for regulating the pH value of the starch slurry to be 8-9. The preparation method for the starch-based paperboard adhesive comprises the following steps: preparing the starch slurry; adding the alkali liquor into the starch slurry, wherein the temperature of the starch slurry is 36-38 DEG C; regulating the pH value of the starch slurry to be 8-9, thereby preparing alkalescent starch slurry; increasing the temperature and stirring the starch slurry till reaching the gelatinization temperature of the starch slurry, thereby acquiring the starch paste; reducing the temperature of the starch paste to 30 DEG C and then adding borax and stirring, thereby acquiring an end product of the paperboard adhesive. According to the invention, the step of preparing glue is reduced under the condition that the glue-preparing time is not reduced, the alkali liquor is added at one time, the weighting error is reduced and the glue-preparing reliability and stability are improved.

Description

technical field [0001] The invention relates to a starch adhesive and a preparation method thereof, in particular to a starch-based cardboard adhesive and a preparation method thereof. Background technique [0002] Corrugated cardboard is a multi-layer adhesive body, which consists of at least one layer of corrugated core paper interlayer and one layer of cardboard. It has high mechanical strength and can withstand bumps and falls during handling. The actual performance of a corrugated box depends on three factors: the characteristics of the core paper and paperboard and the structure of the carton itself. The bonding strength of corrugated cardboard is an important index for testing the physical properties of corrugated cardboard. The bonding process of corrugated cardboard includes complex physical and chemical changes, which mainly depend on the quality of starch adhesive. The physical and chemical indicators of starch adhesive include viscosity, pH value, gelatinizatio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09J103/12C09J11/04
CPCC09J103/12C08K2003/387C08L2205/025C09J11/04C08L3/12C08K3/38C08K3/22
Inventor 张文学魏志理
Owner 成都市九华义远包装有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap