Package structure

Patent metadata

Field	Value
Publication number	US-9232876-B2
Application number	US-201113877043-A
Country	US
Kind code	B2
Filing date	Sep 16, 2011
Priority date	Sep 30, 2010
Publication date	Jan 12, 2016
Grant date	Jan 12, 2016

Abstract

In order to achieve both ease of removal and an increase in the rate of impregnation by a predetermined chemical, in this packaging structure of a package of wet wipes, a convex region is formed at a position containing a region that faces the opening of a main package body and that is on the upper surface of a stacked body of wet wipes. The convex region is formed protruding towards the main package body. A space is formed between the region (corresponding to the ends) aside from the convex region formed on the wet wipes and the upper surface to which the opening of the main package body is provided.

First claim

The invention claimed is:

1. A package structure, comprising
a package main body; and
stack of sheets impregnated with a predetermined chemical to form wet wipes, and arranged in a stacking direction inside the package main body,

wherein
the package main body has a surface provided with an opening portion configured for the sheets to be taken out
each of the sheets has a convex region facing the opening portion and protruding toward the surface provided with the opening portion
in an unopened state in which the opening portion is unopened, a space is formed between the surface provided with the opening portion of the package main body and a region other than the convex region of a topmost sheet,
each of the sheets is folded back along a first folding line, a second folding line, a third folding line and a fourth folding line,
in a widthwise direction of each of the folded sheets, the first folding line and the second folding line are located between the third folding line and the fourth folding line,
in each of the folded sheets,
a region between the first folding line and the second folding line in the widthwise direction has a four-layered structure in the stacking direction, and
other regions of the folded sheet have a two-layered structure in the stacking direction, and

for each pair of adjacent folded sheets among the folded sheets, the region between the first folding line and the second folding line in the widthwise direction in one of the adjacent folded sheets does not overlap the region between the first folding line and the second folding line in the widthwise direction in the other of the adjacent folded sheets in the stacking direction.

2. The package structure according to claim 1 , wherein
the folded sheets are stacked in a rectangular form in which each of the folded sheets has a long side and a short side; and
the convex region of each of the folded sheets extends along the long side or the short side.

3. The package structure according to claim 1 , wherein
the convex region is in contact with the surface of the package main body in a region other than the opening portion of the surface.

4. The package structure according to claim 1 , wherein
each of the folded sheets has
two outer end regions; and
the convex region between the two outer end regions in the widthwise direction, and

the convex region includes the four-layered structure, and the two outer end regions include the corresponding two-layered structure.

5. The package structure according to claim 4 , wherein, in each of the folded sheets, the convex region is closer to the opening than the two outer end regions in the stacking direction.

Assignees

• Bando Takeshi
• Miyake Daisuke
• Hiramatsu Ikue
• Ishikawa Yoshihide
• Unicharm Corp

Inventors

• Bando Takeshi
• Miyake Daisuke
• Hiramatsu Ikue
• Ishikawa Yoshihide

Classifications

• B65H45/24

  Interfolding sheets, e.g. cigarette or toilet papers · CPC title

• B65B25/145 Primary

  packaging folded articles · CPC title

• B65H2301/42262

  by acting on surface of outermost articles of the pile, e.g. in nip between pair of belts or rollers · CPC title

• B65H29/32

  from pneumatic, e.g. suction, carriers · CPC title

• B65H2701/1924

  Napkins or tissues, e.g. dressings, toweling, serviettes, kitchen paper and compresses · CPC title