JPH04261655A - Manufacture of paper diaper - Google Patents

Abstract

PURPOSE:To lower material cost of a paper diaper by making a side flap (a tape mounting part for wearing) using a proper breathing material free to select. CONSTITUTION:This method contains a process of making a strip paper diaper body, a process of producing a roughly trapezoidal side flap sheet from a third strip sheet and a process of pasting the side flap sheet on both side peripheries of the strip paper diaper body. Thus, the side flap can employ a desired breathing material (e.g. unwoven cloth) to improve comfortableness in use while enabling the lowering of product cost with the elimination of waste of raw material of the diaper body.

Description

[Detailed description of the invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing disposable diapers.

2. Description of the Related Art In manufacturing known disposable diapers, as shown in FIG. The paper diaper is manufactured by cutting along the transverse cutting line C1 at a predetermined interval from 4, and the tape attachment part (side flap) 1 for wearing is manufactured integrally with the backsheet 3.

[Problems to be Solved by the Invention] The present invention provides side flaps (tape attachment portions for attaching to clothing) with appropriate ventilation that is different from a waterproof (non-breathable) back sheet (for example, a polyethylene sheet). The objective is to make it possible to freely select a sheet material with good properties and to reduce material costs.

[Means for Solving the Problems] The present invention provides a process for manufacturing a belt-shaped disposable diaper body in which absorbent mats are intermittently arranged between a top sheet and a back sheet, and a process for producing a belt-shaped third sheet having an approximately trapezoidal shape. a step of manufacturing a side flap sheet, a step of pasting the side flap sheet on both sides of the band-shaped disposable diaper body approximately at the transverse cutting line of the band-shaped disposable diaper body, and a process of cutting the band-shaped disposable diaper body together with the side flap sheet into a predetermined size. By including the steps, a paper diaper is manufactured by separating the work steps into the band-shaped paper diaper main body and the side flaps.

[Embodiments] The following description will be made based on the embodiments shown in the drawings. Referring to FIG. 1, in step a, a band-shaped paper diaper main body is produced in which absorbent mats are intermittently sandwiched between a top sheet and a back sheet. In a separate process b that is parallel to the above process a, a substantially trapezoidal side flap sheet B is manufactured by cutting the third sheet 10 in the form of a belt along the cutting line C2. The side flap sheet B obtained in step b is supplied to the band-shaped disposable diaper body A obtained in step a, and in step c, the side flap sheets are pasted on both side peripheral edges of the band-shaped disposable diaper body approximately centered on the transverse cutting line of the band-shaped disposable diaper body. Next, in step b, the strip-shaped paper diaper main body A is cut along the cutting line C1 along with the side flap sheets B to have a predetermined length, thereby completing the paper diaper M. FIG. 2 shows the paper diaper M completed in step d. The cross-sectional shape of the paper diaper M is shown, and the mounting position of the side flaps 1 can be selected as appropriate with reference to FIG. 2, and is bonded to the outside of the back sheet 3 in figure b and to the outside of the top sheet 2 in figure c. In Figure d, the inner edge of the side flap 1 is fused to the wound portion of the top sheet 2 (the side edge of the diaper body). Referring to FIG. 4,
C and D show the relationship between the cut point of the side flap sheet B in Figure a and the attachment position to the belt-shaped diaper main body A.
The side flaps B cut from the sheet 10 are supplied to the belt-shaped diaper main body A. Further, the shape of the side flap can be made into an appropriate shape, and is not limited to the trapezoid shown in FIG.
It is also possible to cut the strip material to create a trapezoid with rounded corners. Furthermore, as shown in FIG. 6, the cut portion N may be formed by cutting along a curved line C3 as appropriate.

[Effects of the Invention] The present invention has the ability to produce the side flaps (attachment tape attachment part) separately from the diaper body.
The side flaps can be made of a desired breathable material (for example, non-woven fabric), which improves the feeling of use, and the side flaps, which serve as wide width parts, are added to the diaper body, so they can be used as a top sheet or a back sheet. It is possible to reduce product costs by preventing waste of materials for the diaper body.

[Brief explanation of the drawing]

FIG. 1 is a process explanatory diagram showing an overview of the method for manufacturing a disposable diaper of the present invention.

FIG. 2 is a plan view of a disposable diaper manufactured according to the present invention in an unfolded state.

FIG. 3 shows cross-sectional views of various embodiments according to the invention.

FIG. 4 is an explanatory diagram showing a method of manufacturing a side flap sheet.

FIG. 5 is an explanatory diagram of a second embodiment of the side flap sheet.

FIG. 6 is an explanatory diagram of a third embodiment of a side flap sheet.

FIG. 7 is an explanatory diagram showing a known method for manufacturing disposable diapers.

[Explanation of symbols]

A Band-shaped disposable diaper body B Side flap sheet 1 Side flap

Claims (1)

[Claims] [Claim 1] A step of manufacturing a band-shaped disposable diaper body in which an absorbent mat is intermittently arranged between a top sheet and a back sheet, and manufacturing a substantially trapezoidal side flap sheet from a band-shaped third sheet. a process of attaching side flap sheets to both side peripheries of the band-shaped paper diaper body approximately at the transverse cutting line of the band-shaped paper diaper body; and a process of cutting the band-shaped paper diaper body together with the side flap sheets into predetermined dimensions. A method for manufacturing disposable diapers characterized by: