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Tissue paper for domestic use

A technology for household and thin paper, which can be applied to household utensils, thin paper/absorbent paper, paper, etc. It can solve the problems of hard touch, thinner thickness, and stiffness, etc., and achieve the effect of excellent strength and soft touch

Inactive Publication Date: 2013-06-05
NIPPON PAPER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the line pressure is increased in order to enhance the smoothness with this calender, there is a problem that the thickness becomes thinner and stiffer, and the hand feeling becomes hard.

Method used

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  • Tissue paper for domestic use
  • Tissue paper for domestic use
  • Tissue paper for domestic use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] The raw materials of the upper layer and the lower layer among the three layers were prepared as follows. Pulp sheets of hardwood bleached kraft pulp are dissociated in a low-consistency pulper and adjusted to an arbitrary consistency before use figure 1 In the cavitation jet treatment device shown (nozzle diameter 1.5 mm), the pressure of the spray liquid (pressure on the upstream side of the nozzle) is set to 8 MPa (gauge pressure, jet flow velocity 80 m / s), and the water in the container to be sprayed The pressure (pressure on the downstream side of the nozzle) was set to 0.4 MPa (gauge pressure), and a one-shot process was performed. Among them, a pulp suspension with a concentration of 3% by weight was used as the spray liquid, and the pulp suspension (with a concentration of 3% by weight) in the container was cavitated to a Canadian standard freeness of 435 mL to obtain a raw material A. Tissue papers were produced from stock A and middle stock B (pulp sheets of ...

Embodiment 2

[0109] The raw materials in the upper and lower layers were treated in the same manner as in Example 1, and the Canadian standard freeness was set to 420 mL to obtain the raw material D. Tissue paper was produced by adding 0.1% of wet paper strength enhancer (relative to pulp absolute dry weight) to raw material D and middle layer raw material B. The grammage of thin paper after papermaking is 13.0g / m 2 way to adjust.

Embodiment 3

[0116] The raw materials of the upper and lower layers are treated with a cavitation jet flow processing device (nozzle diameter 1.5mm), and the pressure of the spray liquid (pressure on the upstream side of the nozzle) is set to 8MPa (gauge pressure, jet flow velocity 80m / s), and the The pressure in the sprayed container (pressure on the downstream side of the nozzle) was set to 0.4MPa (gauge pressure), and except that two passes were performed, the same process was carried out as in Example 1, and the Canadian standard freeness was set to 390mL , obtained raw material F. Tissue paper was produced by adding 0.1% of wet paper strength enhancer (relative to pulp absolute dry weight) to raw material F and middle layer raw material B. The grammage of thin paper after papermaking is 15.1g / m 2 way to adjust.

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Abstract

The present invention aims to provide soft and pleasant-to-touch tissue papers for household use with high strength. Provided are a tissue paper for household use characterized in that it contains a pulp obtained by applying an impact force produced during the collapse of bubbles generated by cavitation to pulp fibers and a tissue paper for household use consisting of two or more paper layers characterized in that at least one paper layer contains a pulp obtained by applying an impact force produced during the collapse of bubbles generated by cavitation to pulp fibers.

Description

technical field [0001] The present invention relates to household tissue papers such as tissue papers such as toilet paper towels and paper towels, and more particularly relates to household tissue papers that are soft, feel good to the touch, and have high strength. Background technique [0002] Conventionally, as pulp used in so-called household tissue paper such as toilet paper, facial tissue, and paper towels, the following substances have been used: Pulp produced from chemical pulp obtained by steaming wood chips derived from hardwood and coniferous trees Liquid pulp (slushed pulp) in its original state, dry pulp (dry pulp) obtained by dehydrating and drying the liquid pulp, or waste paper deinked pulp obtained by deinking waste paper; these pulps can be Bleached pulp, the state of bleached pulp, or the state of unbeaten and beaten pulp, used alone or in combination according to quality design. [0003] Research has been conducted on technologies aimed at improving sof...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21D1/00A47K10/16D21H11/16D21H27/00
CPCD21H11/16D21H27/002
Inventor 野田贵治扇元政人小野克正佐佐木健高桥健志
Owner NIPPON PAPER IND CO LTD
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