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Method for making papermaking starch glue

A production method and technology of starch glue, applied in the field of starch glue, can solve problems such as rubber rollers are easy to get dirty, flocculate, and affect the quality of sizing, and achieve the effect of improving quality

Active Publication Date: 2011-02-23
东莞理文造纸厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high temperature in the step of enzyme inactivation, the temperature of the starch paste transferred to the storage tank is still 95-105°C. Rubber rollers are easy to get dirty, affecting the quality of sizing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of starch glue for papermaking, which comprises the following steps.

[0019] a. Add 24kg of cornstarch and 100kg of water into the mixing tank, then add 0.00408kg of α-amylase, and stir evenly.

[0020] b. The uniformly stirred cornstarch is sent into the gelatinization tank, and the temperature is raised to 80°C by passing steam. The cornstarch is gelatinized under the action of α-amylase, and the gelatinization time is 1.5h.

[0021] c. The starch paste obtained after the corn starch is gelatinized in the gelatinization tank is sent to the inactivation tank, and the temperature is raised to 120°C for inactivation by passing through steam to eliminate the activity of the remaining α-amylase. The inactivation time is 3 minutes.

[0022] d. Send the inactivated starch paste into the storage tank. A clean water adding device is installed above the storage tank. The flow of clean water is controlled by adjusting the regulating valve to control the tem...

Embodiment 2

[0024] A preparation method of starch glue for papermaking, which comprises the following steps.

[0025] a. Add 28kg of cornstarch and 100kg of water into the mixing tank, then add 0.0028kg of α-amylase, and stir evenly.

[0026] b. The uniformly stirred cornstarch is sent into the gelatinization tank, and the temperature is raised to 82°C by passing steam. The cornstarch is gelatinized under the action of α-amylase, and the gelatinization time is 1.8h.

[0027] c. The starch paste obtained after the corn starch is gelatinized in the gelatinization tank is sent to the inactivation tank, and the temperature is raised to 125°C for inactivation by passing through steam to eliminate the activity of the remaining α-amylase. The inactivation time is 4 minutes.

[0028] d. Send the inactivated starch paste into the storage tank. There is a clean water adding device above the storage tank. The flow of clean water is controlled by adjusting the regulating valve to control the temperat...

Embodiment 3

[0030] A preparation method of starch glue for papermaking, which comprises the following steps.

[0031] a. Add 30kg of tapioca starch and 100kg of water into the mixing tank, then add 0.006kg of α-amylase, and stir evenly.

[0032] b. The uniformly stirred cassava starch is sent into the gelatinization tank, and the temperature is raised to 85°C by passing steam. The cassava starch is gelatinized under the action of α-amylase, and the gelatinization time is 2 hours.

[0033] c. The starch paste obtained after cassava starch is gelatinized in the gelatinization tank is sent to the inactivation tank, and the temperature is raised to 130° C. for inactivation by steaming, so as to eliminate the activity of the remaining α-amylase. The inactivation time is 5 minutes.

[0034] d. Send the inactivated starch paste into the storage tank. A clean water adding device is installed above the storage tank. The flow of clean water is controlled by adjusting the regulating valve to control...

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Abstract

The invention belongs to the technical field of starch glue, in particular to a method for making papermaking starch glue, which comprises the following steps: a, adding starch and water into a mixing tank, blending to obtain a 24 to 30 mass percent concentration, adding amylase, and uniformly stirring; b, delivering the uniformly stirred starch to a pasting tank, introducing steam, heating to 80 to 85 DEG C, and allowing the starch to turn into paste under the action of the amylase within 1.5 to 2 hours; c, delivering the starch paste obtained after the starch turns into paste in the pasting tank to an inactivation tank, intruding steam, heating to 120 to 130 DEG C and inactivating the residue amylase for 3 to 5 minutes; and d, delivering the inactivated starch paste to a storage tank, adding clear water for regulating temperature, keeping the temperature of the starch paste in the storage tank between 75 and 85 DEG C, and obtaining starch glue for later use. In the invention, starch glue obtained by the method is free from flocculation, a glue roller does not dirty when the glue is applied, and the gluing application quality is improved.

Description

technical field [0001] The invention belongs to the technical field of starch glue, in particular to a method for preparing starch glue for papermaking. Background technique [0002] With the advancement of science and technology, higher and higher requirements are put forward for the quality of papermaking products, so the surface sizing process has appeared in the papermaking industry. Surface sizing can not only improve the physical strength, abrasion resistance, durability, hand feeling and smoothness of the paper surface, but also overcome defects such as fluffing and powder falling on the paper surface. [0003] In order to reduce production costs, most enterprises directly sizing the raw starch after conversion and cooking in the paper production workshop. At present, the conversion and cooking methods commonly used for native starch include enzymatic conversion process. In the enzymatic conversion process, there is a step of enzyme inactivation, so as to keep the de...

Claims

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Application Information

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IPC IPC(8): D21H21/16
Inventor 李文斌
Owner 东莞理文造纸厂有限公司
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