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Granular water-absorbent filling method and granular water-absorbent sampling method

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

Active Publication Date: 2016-05-18
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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  • Granular water-absorbent filling method and granular water-absorbent sampling method
  • Granular water-absorbent filling method and granular water-absorbent sampling method
  • Granular water-absorbent filling method and granular water-absorbent sampling method

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

The present invention is a granular water-absorbent filling method involving a filling process for filling a filling container (16) with a granular water-absorbent and a vibration process for vibrating the filling container (16) from the outside of the filling container (16), said vibration process being performed at least once during the period between the start and the end of the filling process, wherein the vibration conditions during the vibration process satisfy conditions (a) and (b) described below. (a) Vibrations of a vibrating body (10, 12) in contact with the filling container (16) have vertical components, and the vibration angle is in the range of 90 degree+ / -30 degree. (b) Settings for the total amplitude of the vibrating body (10, 12) under no load and the vibration frequency under no load satisfy formula (1-1) and formula (2), or formula (1-2) and formula (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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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