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Filling method of granular water-absorbing agent and sampling method of granular water-absorbing agent filling

A filling method and granular technology, which can be used in sampling devices, chemical instruments and methods, transportation and packaging, etc., can solve the problems of physical property reduction and physical property deviation, and achieve the effect of reducing deviation and less consumer complaints

Active Publication Date: 2018-11-13
NIPPON SHOKUBAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] On the other hand, it is noted that not only the technique of precisely controlling the physical properties of the particulate water-absorbing agent as described above, but also variations in the operating conditions in the filling process of filling the manufactured particulate water-absorbing agent can lead to final products such as , Disposable diapers) produce significant deviations in physical properties, and there is also a technology that intends to solve one of the factors that will cause a decrease in the physical properties of the final product (for example, disposable diapers) and consumer complaints (Patent Document 13)

Method used

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  • Filling method of granular water-absorbing agent and sampling method of granular water-absorbing agent filling
  • Filling method of granular water-absorbing agent and sampling method of granular water-absorbing agent filling
  • Filling method of granular water-absorbing agent and sampling method of granular water-absorbing agent filling

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1-1

[0419] Polymerization process, gel fine granulation (disintegration) process, drying process, pulverization process, classification process, surface crosslinking process (spraying process of surface crosslinking agent, heating process), cooling process, sizing process and product The devices in the storage / filling process are connected by a conveying device, and a continuous manufacturing device capable of continuously performing each process is used, and the same operation is performed with reference to Example 3 described in International Publication No. 2011 / 126079 to manufacture a particulate water-absorbing agent . However, at this time, an equivalent amount of ethylene carbonate was used instead of 1,4-butanediol used as a surface crosslinking agent.

[0420] In this way, the mass average particle diameter (D50) was about 370 micrometers, the logarithm standard deviation (σζ) of the said particle size distribution was about 0.34, and the particulate water-absorbing agent...

experiment example 1-1

[0424] use figure 1 The filling apparatus shown is used to fill the particulate water-absorbing agent (a) obtained in Production Example 1-1 above. In addition, the raw material of the suspending belt 20 is cloth, and it has the structure which has a clearance gap with the contact part with the filling container 16, and the contact part with the suspension part 22 (the same applies hereinafter).

[0425] The vibration generating device is composed of two unbalanced mass types. In order to suppress the vibration in the horizontal direction, the rotation direction of the vibration motor is set in the opposite direction, so that they are inverse cycles to each other, so that the vibration angle reaches 90±5°.

[0426] In the vibration at the time of no load, the vibrating body was set so as to achieve an amplitude of 0.28 [mm], a vibration frequency of 60 [Hz], an acceleration of 2.0 [G], and a vibration index of 27.1. In addition, the vibration is linear vibration, and the vib...

experiment example 2-1

[0435] The vibration conditions were changed as follows, and the same operation as in Experimental Example 1-1 was performed.

[0436] The vibration generating device is composed of two unbalanced mass types. In order to suppress the vibration in the horizontal direction, the rotation direction of the vibration motor is set in the opposite direction, so that they are inverse cycles to each other, so that the vibration angle reaches 90±5°. In the vibration at the time of no load, the vibrating body was set so as to have an amplitude of 1.10 [mm], a vibration frequency of 30 [Hz], an acceleration of 2.0 [G], and a vibration index of 35.8. In addition, the vibration is linear vibration, and the vibration angle is in the range of 90±5°. The tray is made of plastic, measures 110 cm in length and 110 cm in width, and weighs 10.4 kg.

[0437] Sampling and transportation were carried out in the same manner as in Experimental Example 1-1 to obtain a "filled particulate water-absorbing...

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Abstract

[Problem] An object of the present invention is to provide a technology with reduced physical properties and / or fewer complaints from consumers. [Solution] A method for filling a particulate water absorbing agent comprising the steps of: filling the particulate water absorbing agent into a filling container; and vibrating the filling container from outside the filling container. During the period from the beginning of the filling process to the end, implement the vibration process at least once, and the vibration conditions in the aforementioned vibration process satisfy the following conditions (a) and (b): (a) the vibration of the vibration body in contact with the aforementioned filling container has The vertical direction component, the vibration angle is within 90°±30°; (b) the setting of the total amplitude under no load and the vibration frequency under no load of the aforementioned vibrating body satisfies formula 1‑1 and formula 2, or satisfies formula 1‑2 and Equation 2.

Description

technical field [0001] The invention relates to a filling method of a granular water-absorbing agent and a sampling method for filling the granular water-absorbing agent. Background technique [0002] In recent years, for hygienic materials such as disposable diapers, sanitary napkins, and incontinence pads, water-absorbent resins, which are constituent materials thereof, have been widely used as water-absorbing agents from the viewpoint of absorbing body fluids. As the water-absorbent resin, there are known, for example, a partially neutralized polyacrylic acid cross-linked product, a hydrolyzed product of a starch-acrylic acid graft polymer, a saponified product of a vinyl acetate-acrylate copolymer, an acrylonitrile copolymer or an acrylic acid copolymer. A hydrolyzate of an amide copolymer or a crosslinked body thereof, a crosslinked body of a cationic monomer, and the like. [0003] This water-absorbent resin can be used in the form of a sheet, a fiber, or a film, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65B1/22B01J20/26B65B1/06
CPCB65B1/06B01J20/267B01J2220/68B01J20/28011B65B1/22B01J20/28016G01N1/04
Inventor 鸟井一司阪本繁多田贤治木村一树渡边雄介
Owner NIPPON SHOKUBAI CO LTD