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Individual packages of absorbent articles, packaging sheet and process for production of packaging sheet

A manufacturing method and packaging technology, which is applied to the packaging of fragile items, packaging, absorbent pads, etc., can solve the problems of scattered texture, damaged airtightness, and dust mixed in, achieve soft touch and appearance, and reduce costs

Inactive Publication Date: 2010-07-14
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, although general paper is good in airtightness and hydrolysis, it has poor wet strength, is easily damaged when touched with wet hands or splashed with water, and has the problem of not being able to function as a package.
[0009] In addition, although the hydrolyzable fibrous sheets of Patent Document 1 and Patent Document 2 can obtain soft, moderate wet strength and hydrolyzable hydrolyzable fibrous sheets at the same time, due to the high-pressure water jet treatment, the texture of the paper is scattered or fine holes are formed. , Compared with ordinary paper, the airtightness is seriously impaired, and when used as a single package, there is a problem of mixing foreign matter such as dust

Method used

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  • Individual packages of absorbent articles, packaging sheet and process for production of packaging sheet
  • Individual packages of absorbent articles, packaging sheet and process for production of packaging sheet
  • Individual packages of absorbent articles, packaging sheet and process for production of packaging sheet

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0043] figure 1 It is a schematic diagram showing a first embodiment of the packaging sheet of the present invention, and the double-layered packaging sheet 70 has a laminated structure of the first fiber layer 21 and the second fiber layer 22 . The first fiber layer 21 contains pulp fibers 24 and chemical fibers 25 in an interwoven state. As will be described later, these two fibers are formed by interweaving through high-pressure water jet processing. The pulp fibers 24 and the chemical fibers 25 are rearranged by interweaving by high-pressure water jet treatment, and the fiber density of the entire first fiber layer 21 becomes coarse, so the appearance is good and the flexibility is good.

[0044] By making the 1st fiber layer 21 contain the pulp fiber 24, the intensity|strength of the 1st fiber layer 21 can be improved.

[0045] The pulp fibers 24 used in the first fiber layer 21 can be, for example, LBKP, NBKP, wood pulp, non-wood pulp such as hemp and cotton, regenerated ...

no. 2 approach

[0074] Such as figure 2 As shown, the second embodiment of the packaging sheet of the present invention is the same as the first embodiment except that the third fiber layer 23 is laminated on the second fiber layer 22 on the side opposite to the first fiber layer 21 . The third fiber layer 23 is the same as the first fiber layer 21, and contains interwoven pulp fibers 24 and chemical fibers 25, which are formed by interweaving through high-pressure water jet processing. The pulp fibers 24 and the chemical fibers 25 are rearranged by interweaving by high-pressure water jet treatment, and the fiber density of the entire third fiber layer 23 becomes coarse, so the appearance is good and the flexibility is good.

[0075] By making the third fiber layer 23 contain the pulp fiber 24, the strength of the third fiber layer 23 can be increased.

[0076] The pulp fibers 24 used in the third fiber layer 23 can be, for example, LBKP, NBKP, wood pulp, non-wood pulp such as hemp and cott...

Embodiment 1

[0157] In addition to Example 1, from Example 2 to Example 6, the packaging sheets to which dyes or sizing agents were added within the range not to impair the hydrolyzability were also produced, and the contents of pulp fibers 24 and chemical fibers 25 were changed. The same test and measurement as in Example 1 were carried out for packaging sheets such as square meter weight. In addition, the size and shape of Example 2 to Example 6 are the same as those of Example 1.

[0158] [Manufacture of sheets for three-layer laminated packaging]

[0159] (manufacturing of the first fiber layer)

[0160] As the pulp fiber 24, NBKP (CSF720cc) and synthetic pulp (SWP E-400 manufactured by Mitsui Chemicals Co., Ltd.) were used in combination.

[0161] As the chemical fiber 25, a viscose fiber (Corona produced by Daiwa Spun Viscose Co., Ltd.) with a fineness of 1.1 dtex and an average fiber length of 7 mm was used.

[0162] The content of pulp fiber 24 and chemical fiber 25 is 60% by ma...

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Abstract

A packaging sheet for an absorbent article comprising an absorbent body having at least an ability to hold liquid, having a laminated structure comprising both the first fiber layer which comprises 30 to 70% by mass of pulp fiber and 70 to 30% by mass of a chemical synthetic fiber having a mean fiber length of 20mm or below and is in a state treated with high-pressure water jet and the second fiber layer which lies on the first fiber layer and comprises 70 to 100% by mass of pulp fiber.

Description

technical field [0001] The present invention relates to an individual package of absorbent articles, a packaging sheet used in the individual package, and a manufacturing method thereof. Background technique [0002] For hygiene and portability, absorbent articles such as sanitary napkins, panty liners, or disposable interlabial fillers are packaged in a single package prepared separately from absorbent articles. In recent years, hydrolyzable (water collapsible) absorbent articles have been developed that use a large amount of water to decompose early. Tanks and the like can be disassembled in a short to medium period of time, reducing man-hours and costs for garbage collection and disposal. [0003] However, depending on the nature of absorbent articles, they are often used in toilets and the like, and if the individually packaged absorbent articles are not hydrolyzable, it may be difficult to dispose of the individually packaged absorbent articles after use. [0004] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/26A61F13/15A61F13/472B65D65/40D04H1/42D04H1/46D04H1/425D04H1/492D04H1/498
CPCA61F13/5513D04H1/32D04H1/492A61F13/55135D21H27/42D04H1/46D04H1/4291B65D65/46A61F13/55165D21H27/38D04H1/26B32B5/26A61F13/551D04H13/002D04H1/4374B65D85/40D04H1/28D04H1/435B65D65/40D04H1/4258B32B5/06B32B5/22B32B2250/20B32B2262/023B32B2262/0246B32B2262/0253B32B2262/0261B32B2262/0276B32B2262/04B32B2262/062B32B2262/14B32B2307/402B32B2307/50B32B2307/716B32B2307/718B32B2307/726B32B2555/00B32B2555/02D04H1/498B32B2262/02B32B2307/70
Inventor 小西孝义八卷孝一铃木奈保美
Owner UNI CHARM CORP
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