JP4966549B2 - Method for manufacturing worn article - Google Patents

Description

  The present invention relates to a method for manufacturing worn articles such as disposable diapers and pants.

In recent years, a method for manufacturing a worn article in which a stretchable waistline member is disposed on a diaper body has been proposed. For example, a method is known in which a material sheet obtained by laminating a highly stretchable film on the surface of a nonwoven fabric is placed on a diaper body (Patent Document 1).
Further, a method is known in which an absorbent body is arranged on a web into which an elastic member is introduced, and is cut into individual diapers (Patent Document 2).
JP-A-4-66584 (FIG. 1) JP 2003-102777 (FIG. 5, paragraph 0019)

  Here, a method of manufacturing a T-shaped wearing article by conveying the front part and the back part of the diaper main body in a transverse flow substantially perpendicular to the flow direction and disposing the waistline member at one end of the diaper main body. Conceivable. However, in such a method, the generated wearing article is remarkably asymmetric with respect to the conveyance direction, so that the semi-finished product and the product are not easily conveyed.

  Therefore, a main object of the present invention is to increase the degree of design freedom by providing a novel manufacturing method in which the article can be easily conveyed in the method for manufacturing a worn article.

  A manufacturing method of a wearing article according to the present invention includes a front part that covers a wearer's belly, a back part that covers the wearer's back, and a crotch part that covers the wearer's crotch. In the method of manufacturing a worn article formed in a T shape by stacking a waistline member on the back portion of the main body, a step of transporting in the longitudinal direction a belt-like elastic sheet that can be stretched in the longitudinal direction while pulling in the longitudinal direction; Cutting the elastic sheet into a predetermined length to generate the waistline member; and transporting the diaper body so that a front portion and a back portion of the diaper body are arranged along a flow direction; , Rotating the cut waistline member by approximately 90 °, and disposing the waistline member on the back portion of the diaper main body.

According to this method, since the waistline member made of an elastic sheet is rotated by 90 ° and disposed on the diaper body, the wearing article on which the waistline member is disposed is generally left-right symmetric with respect to the flow direction, so that the conveyance is easy. It is.
Moreover, since it arrange | positions in the diaper main body C after rotating a trunk periphery member 90 degrees, the elastic sheet which can be expanded-contracted in the longitudinal direction of a trunk periphery member is employable. Therefore, since an elastic sheet in which elastic members such as inexpensive thread rubber and flat rubber are arranged along the longitudinal direction can be used, the degree of freedom in design can be expanded, such as significant cost reduction.

The “wearing article” is a concept including semi-finished products and finished products of disposable wearing articles such as disposable diapers and pants.

  According to another method for manufacturing a worn article of the present invention, a front part that covers the waist on the abdomen of the wearer, a back part that covers the trunk on the back of the wearer, and a crotch part that covers the crotch of the wearer are integrally formed. In the manufacturing method of a wearing article in which a waist member is overlapped on the back portion of the diaper main body and formed in a T shape, a step of transporting a belt-like elastic sheet stretchable in the width direction in the longitudinal direction; A step of cutting the tip portion to generate the waistline member, a step of extending the cut waistline member in the waistline direction which is the width direction, and a front part and a back part of the diaper body are arranged along the flow direction The diaper main body is transported, and the stretched waistline member is disposed on the back portion of the diaper main body.

  The invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying drawings, in which: However, the examples and figures are for illustration and description only and should not be used to define the scope of the present invention. The scope of the present invention is defined only by the claims. In the accompanying drawings, the same part numbers in a plurality of drawings indicate the same or corresponding parts.

Example 1:
Embodiment 1 of the present invention will be described below with reference to the drawings.
1 and 2 show Example 1. FIG.
Diaper (wearing article) 10:
First, an example of a wearing article that can be manufactured according to the present invention will be described with reference to FIG.
As shown in the lower right end of FIG. 2, the diaper (an example of a worn article) 10 is formed in a T shape by overlapping a waist member Ws on a diaper main body C.

The waistline member Ws is provided with an elastic member F made of, for example, a plurality of thread rubbers or flat rubbers along the waistline direction X.
The diaper main body C is integrally formed with a front part Cf covering the abdomen side of the wearer, a back part Cb covering the back side of the wearer, and a crotch part CP covering the crotch of the wearer. The waist member Ws is overlapped and bonded to the back portion Cb of the diaper main body C.

  Leg holes Lh are formed at both ends of the diaper main body C. The crotch portion CP of the diaper main body C is provided with an absorber capable of absorbing bodily fluids discharged from the body. The said absorber should just be what can absorb and hold | maintain a liquid. The absorbent body may have fluff pulp and / or superabsorbent polymer comminuted from the pulp.

  The continuous web on which the absorbent body is disposed may be a sheet-like material that constitutes a top sheet or a back sheet of a worn article. The top sheet can permeate the body fluid of the wearer, such as urine and blood. The top sheet may have a function of preventing the liquid from flowing backward. As the back sheet, for example, a polyethylene sheet that does not transmit liquid can be used. In addition, although an elastic member may be arrange | positioned in the leg hole Lh, the description and illustration are abbreviate | omitted for simplification of description.

Production method:
As shown in FIG. 1, the elastic sheet W is bonded to both webs W1 and W2 along the flow direction L with a plurality of elastic members F stretched between the pair of webs W1 and W2. Formed.
The elastic sheet W shown in FIG. 2 is conveyed in the longitudinal direction (flow direction) L while being stretched while being pulled in the longitudinal direction L. The elastic sheet W is cut along the first cutting line CL1 substantially orthogonal to the flow direction L in the stretched state, and is cut into the waistline member Ws in the stretched state.

  The hook and loop fasteners E may be disposed (adhered) on both sides of the waistline member Ws. The hook-and-loop fastener E is disposed on both ends of the waistline member Ws by the cutting by being previously disposed on the elastic sheet W so as to straddle the cutting position by the first cutting line CL1.

  On the other hand, the diaper main body C is continuously conveyed in a state where the front part Cf and the back part Cb of the diaper main body C are connected to each other so as to be arranged along the flow direction L.

The cut waistline member Ws remains in the stretched state and is rotated by 90 °, and then disposed at a portion corresponding to the back portion Cb of the diaper main body C.
In order to rotate the waistline member Ws by 90 °, for example, there is a method of rotating (turning) the waistline member Ws by 90 ° after the intervals between the waistline members Ws are separated from each other (re-pitch). The re-pitch and the turn may be performed using separate devices or may be performed using the same device.
As a device for performing the re-pitch of the waistline member Ws, various devices such as a device disclosed in Japanese Patent Laid-Open No. 63-317576 can be employed.

  Then, the diaper main body C is cut along the second cutting line CL2 that is orthogonal, and the diaper 10 is generated.

Thus, since the waistline member Ws is rotated by 90 ° and disposed in the diaper main body C, the diaper 10 in which the waistline member Ws is disposed is symmetrical with respect to the flow direction L, and is thus easily transported. .
Further, by using an inexpensive thread rubber or flat rubber for the elastic sheet W constituting the waistline member Ws, a significant cost reduction can be achieved.

As shown in FIG. 3, the waistline member Ws may have a range We where the elastic member F is not disposed or a range We where the elastic member F is invalidated by thermal cutting or the like.
Further, in consideration of a processing error at the time of cutting the diaper main body C, the second cutting line CL2 and the end of the waistline member Ws do not necessarily coincide with each other. For example, as shown in FIG. 4, the rear end of the waistline member Ws is preferably disposed closer to the front portion Cf than the rear end of the back portion Cb of the diaper main body C.
Further, as shown in FIG. 5, the waistline member Ws may be disposed on the back portion Cb after the diaper main body C is cut into units of individual wearing articles. In this case, the rear end of the back portion Cb may be located on the front end side with respect to the rear end of the waistline member Ws.

  Further, by rotating the waistline member Ws by 270 °, the posture of the waistline member Ws may be changed to a posture rotated by 90 °.

Example 2:
FIG. 6 shows a second embodiment.
The elastic sheet W2 shown in FIG. 6 is made of, for example, a resinous sheet having high elasticity in at least the width direction, and is conveyed along the longitudinal direction L. A hook-and-loop fastener E is disposed at both end portions along the flow direction L of the elastic sheet W2. The front end portion of the elastic sheet W2 is cut off along the first cutting line CL1 to generate the waistline member Ws. The hook-and-loop fastener E may be arrange | positioned at the both ends of the produced | generated trunk periphery member Ws.

The cut waistline member Ws is extended in a waistline direction X that is a width direction substantially orthogonal to the longitudinal direction L. After the waistline member Ws is stretched and disposed on the back portion Cb of the diaper main body C, the diaper 10 is generated by cutting along the second cutting line CL2.
Other configurations are the same as those of the first embodiment, and the same reference numerals are given to the same portions or corresponding portions, and the description thereof is omitted.

As the elastic sheet W2, for example, the resin sheet may be laminated on the surface of a nonwoven fabric or the like, or a plurality of elastic members F are sandwiched between two webs. Also good.
Further, the second cutting line CL2 and the end portion of the waistline member Ws do not necessarily coincide with the attachment position of the waistline member Ws, and the rear end portion of the waistline member Ws is the back portion Cb of the diaper main body C. You may arrange | position near the front part Cf rather than the rear-end part.
Further, the waistline member Ws may be disposed after the diaper main body C is cut along the second cutting line CL2.

  The present invention can be applied to a method for manufacturing a worn article having an absorber.

It is a schematic perspective view which shows an example of the manufacturing method of the elastic sheet concerning Example 1 of this invention. It is a schematic plan view which shows an example of the manufacturing method. It is a schematic plan view which shows a modification. It is a schematic plan view which shows a modification. It is a schematic plan view which shows a modification. It is a schematic plan view which shows the manufacturing method of the wearing article concerning Example 2 of this invention.

Explanation of symbols

10: Diaper (an example of a worn article)
C: Diaper body Cb: Back part Cf: Front part CP: Crotch part W, W2: Elastic sheet Ws: Girth member

Claims (2)

A waistline member is superimposed on the back part of the diaper main body integrally formed with a front part covering the waist on the abdomen of the wearer, a back part covering the trunk on the back of the wearer, and a crotch part covering the crotch of the wearer. In the manufacturing method of the wearing article formed in the T shape,
Transporting in the longitudinal direction in a stretched state while pulling in the longitudinal direction a belt-like elastic sheet stretchable in the longitudinal direction;
Generating the waistline member by cutting the stretched elastic sheet into a predetermined length so that the length in the longitudinal direction is longer than the length in the waistline direction of the diaper body ;
Transporting the diaper main body so that the front part and the back part of the diaper main body are arranged along the flow direction;
Wearing the waistline member by rotating the cut waistline member by approximately 90 ° and disposing the waistline member on the back part of the diaper body in a state where the waistline member protrudes from both ends of the diaper body in the waistline direction Article manufacturing method. A waistline member is superimposed on the back part of the diaper main body integrally formed with a front part covering the waist on the abdomen of the wearer, a back part covering the trunk on the back of the wearer, and a crotch part covering the crotch of the wearer. In the manufacturing method of the wearing article formed in the T shape,
A step of transporting in the longitudinal direction a belt-shaped elastic sheet that can expand and contract in the width direction;
Cutting the tip of the elastic sheet to produce the waistline member;
Stretching the waistline member in the waistline direction, which is the width direction, so that the length in the waistline direction of the cut waistline member is longer than the length in the waistline direction of the diaper body ;
Transporting the diaper main body so that the front part and the back part of the diaper main body are arranged along the flow direction;
And a step of arranging the waistline member on a back portion of the diaper body in a state where the stretched waistline member protrudes from both ends of the diaper body in the waistline direction .

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