Toilet paper additive, toilet paper making method using toilet paper additive and toilet paper

A manufacturing method and technology of toilet paper, applied in the field of toilet paper, can solve the problems of reduced fiber strength of raw material pulp, insufficient effect, increased utilization rate of waste paper from hardwood pulp, etc., and achieve excellent dry paper strength, stable manufacturing, and expanded selection effects

Active Publication Date: 2014-07-09
ARAKAWA CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in recent years, the addition rate of hardwood pulp and the utilization rate of waste paper have increased due to factors such as the availability of coniferous kraft pulp as the main raw material in different regions and the price. Therefore, there is a decrease in the fiber strength of the raw material pulp. Difficulty in obtaining toilet paper with specified dry paper strength
[0005] As a countermeasure against the above-mentioned problems, there is known a method of adding additives such as cationized starch and glyoxal-modified polyacrylamide polymer to pulp slurry to impart dry paper strength during tissue papermaking, but the effect is not sufficient.
In addition, excessive addition of additives to improve dry paper strength has the problem of impairing the softness and texture of the toilet paper produced

Method used

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  • Toilet paper additive, toilet paper making method using toilet paper additive and toilet paper
  • Toilet paper additive, toilet paper making method using toilet paper additive and toilet paper
  • Toilet paper additive, toilet paper making method using toilet paper additive and toilet paper

Examples

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Embodiment

[0032] Hereinafter, although an Example and a comparative example are given and this invention is demonstrated more concretely, this invention is not limited to these examples. In addition, in each example, unless otherwise specified, "part" and "%" are based on weight.

[0033] Each measurement was performed by the following method.

[0034] (1) Weight of solid components

[0035] After drying in a dryer at 105° C. for 3 hours, the solid content weights of polymer A and various pulp slurries were measured.

[0036] (2) Viscosity

[0037] Measured at 25°C using a B-type viscometer.

[0038] (3) Weight average molecular weight

[0039] Measured under the following measurement conditions:

[0040] GPC host: manufactured by Tosoh Corporation

[0041] Chromatographic column: 1 guard column PWXL and 2 GMPWXL columns manufactured by Tosoh Corporation (temperature 40°C)

[0042] Eluent: N / 2 acetic acid buffer solution (N / 2 acetic acid (manufactured by Wako Junpharma Co., Ltd.)...

Synthetic example 1

[0047] In the reaction device with stirrer, thermometer, reflux condenser, nitrogen gas introduction pipe and 2 dropping funnels, add 376 parts of ion-exchanged water, pass nitrogen gas to remove oxygen in the reaction system, and then heat to 90°C. Add 208 parts of acrylamide, 9.1 parts of 80% acrylic acid, 1.6 parts of sodium methallyl sulfonate, 0.3 parts of dimethyl acrylamide, 0.5 parts of methylenebisacrylamide, and dimethacrylic acid into a dropping funnel. 26.5 parts of methylaminoethyl ester, 79.8 parts of benzyl chloride quaternary ammonium salt solution of 60% dimethylaminoethyl methacrylate and 534 parts of ion-exchanged water were used to adjust the pH to 3 with 62.5% sulfuric acid. Furthermore, 0.45 parts of ammonium persulfate and 180 parts of ion-exchanged water were added to another dropping funnel. Next, the monomer and the catalyst were added dropwise into the system through two dropping funnels for about 3 hours. After dropping, add 0.3 parts of ammonium p...

Synthetic example 2～8

[0048] Synthesis Examples 2-8, Comparative Synthesis Examples 1-3

[0049] Polymer A was synthesized in the same manner as in Synthesis Example 1, except that the monomer composition in Synthesis Example 1 was changed to that shown in Table 1. The properties of the obtained polymer A are shown in Table 1.

[0050] Table 1

[0051]

[0052] The names of the short names in Table 1 are as follows:

[0053] AM: acrylamide

[0054] DM: Dimethylaminoethyl methacrylate

[0055] DML: Benzyl chloride quaternary ammonium salt of dimethylaminoethyl methacrylate

[0056] DMC: Methyl chloride quaternary ammonium salt of dimethylaminoethyl methacrylate

[0057] BQ: benzyl chloride quaternary ammonium salt of dimethylaminoethyl acrylate

[0058] IA: itaconic acid (diacid)

[0059] AA: Acrylic

[0060] DMAA: Dimethacrylamide

[0061] SMAS: Sodium Methallyl Sulfonate

[0062] MBAA: Methylenebisacrylamide

[0063] Ion equivalent ratio a2 / a3: cation equivalent of polymer A / anion eq...

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Abstract

The invention provides a toilet paper additive and a toilet paper making method using the toilet paper additive, and the toilet paper additive gives necessary dry paper strength and has no adverse effects on productbility and quality in the toilet paper making process, The toilet paper additives comprises an amphoteric (methyl) acrylamide polymer A and a water soluble aluminum compound B, and the ratio of A:B is 95:5-40:60 by weight of solid content, wherein the amphoteric (methyl) acrylamide polymer A is obtained by copolymerization of monomer components of 62-98.95 mol% of (methyl) acrylamide a1, 20.55-20 mol% of a positive ion vinyl monomer a2 and 30.5-18 mol% of a negative ion vinyl monomer a3, and the ion equivalent weight ratio of the positive ion vinyl monomer a2 and the negative ion vinyl monomer a3, namely the ratio of a2 positive ion equivalent weight to a3 negative ion equivalent weight is 1.1-40.

Description

technical field [0001] The present invention relates to an additive used in the manufacture of sanitary paper, a method for manufacturing sanitary paper using the additive, and sanitary paper. Background technique [0002] Toilet paper can generally be classified into paper towels, toilet paper, paper towels, and the like. The characteristics of the above-mentioned toilet paper can be listed as thin and soft, and the weight of general paper towels and toilet paper is very light, with a basis weight of 10~30g / m 2 . In addition, the density of toilet paper is 0.2~0.3g / cm 3 , and the density of general high-quality paper is about 0.8g / cm 3 The density of newsprint is about 0.6g / cm 3 In comparison, it is bulky and very soft. As toilet paper, water absorption is necessary, and compared with other papers, reducing the density and increasing the voids in the paper can improve water absorption. However, reducing paper density also reduces paper strength, and toilet paper requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/55D21H17/63A47K10/16
Inventor 岛本胜浩平野靖彦野村浩关根康雄榮村拓史
Owner ARAKAWA CHEM IND LTD
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