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Absorbing products

An absorbent and product technology, applied in the field of absorbent products, can solve the problems of reduced moisture permeability and difficulty, and achieve the effects of increased added value, high moisture permeability, and prevention of stuffiness and rashes

Active Publication Date: 2004-09-22
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when large-area printing is performed using the technology described in this patent document, it is difficult to prevent a decrease in moisture permeability while maintaining the sharpness of printing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A polyethylene stretched microporous film containing calcium carbonate particles was used as the moisture-permeable film. The quantitative (weight per unit area) of the film is 20g / m 2 , moisture permeability is 2.2g / (100cm 2 h). This film is used in Kao Corporation's disposable diapers for babies "Merry-Zure" belt fastening type. When the surface of the thin film was observed with an electron microscope, the average diameter of pores on the surface was 0.6 μm (magnification: 1000 times). Use a six-color offset printing machine or use offset color inks containing organic pigments of various colors and polyurethane resins as inks to print the pattern shown in Figure 2 on one side of the film. The details of the printing are shown in Table 1. Quantitative 15g / m with hot melt adhesive 2 The non-woven fabric is laminated to the printing part. The water vapor transmission rate of the negative sheet obtained is 2.1g / (100cm 2 h). Using the thus obtained backsheet and u...

Embodiment 2～10

[0057] Using an offset printing machine, use the printing ink of cyan organic pigment system under the conditions shown in Table 2, on the same film as the moisture-permeable film used in Example 1 (but the moisture permeability is 2.0g / (100cm 2 • h)) for printing. The pattern is done using other rabbit patterns obtained by halftone dot printing. For the obtained backsheet, various area ratios and water vapor transmission rates were measured. Moreover, while measuring the color difference of a pattern by the following method, the appearance of a pattern was evaluated by the said method. The results are shown in Table 2.

Embodiment 11

[0059] Use the same film as the moisture-permeable film used in Example 1 (but the moisture permeability is 2.3g / (100cm 2 • h)), monochrome printing over the entire surface. The ink is the same kind of green organic pigment ink mainly containing polyurethane resin as in Example 1, and the ratio of the resin component in the ink coating film is about 45%. Others carry out identically with embodiment 2. For the obtained backsheet, various area ratios and water vapor transmission rates were measured. Moreover, while measuring the color difference of a pattern by the following method, the appearance of a pattern was evaluated by the said method. The results are shown in Table 2. Even if printing is performed on the entire surface, the resin component of the ink is reduced compared with Example 1, and a product having a high water vapor transmission rate can be obtained on the back sheet at a ratio of a substantial area ratio.

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PUM

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Abstract

In the absorptive article 1, a liquid impermeable and moisture permeable back sheet 3 is formed with a printed part showing letters, shapes, or symbols, and it has 60-100 per inch of the line number of the print dot and 30-80% of print dot concentration in the printed part, and 18% or more ratio of apparent area in the printed part to the back sheet area.

Description

technical field [0001] The present invention relates to absorbent articles such as disposable diapers and sanitary napkins, and more particularly to absorbent articles in which printed portions are formed on a liquid-impermeable backsheet. Background technique [0002] On the back sheet used for absorbent products such as disposable diapers and sanitary napkins, various patterns and the like may be printed in order to improve the appearance of these absorbent products. In recent years, moisture-permeable backsheets made of microporous films have been used as backsheets printed with such patterns and the like (for example, refer to Japanese Patent Application Publication No. 2000-513645). However, when printing is performed on a backsheet made of a microporous film, the ink blocks the micropores formed in the film, and the moisture permeability of the backsheet decreases. As a result, the humidity inside the garment rises, making it prone to stuffiness or rashes. From the v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/49A61F5/44A61F13/15A61F13/514B41M3/00
Inventor 小林秀行郡司亮彦金泽幸二
Owner KAO CORP
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