JPS5813701A - Production of disposable diaper - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is to form a thick layer of absorbent material in the crotch area of a disposable shimuri, and to effectively apply KW to the user's Ns on both sides of the crotch area at least on both sides of the crotch area. The present invention relates to a method of manufacturing a pants-type disposable diaper provided with an elastic member.

In the past, several proposals have been made and implemented regarding the manufacturing method of disposable diapers, but the inseam area IIC of disposable diapers
A disposable diaper in which the absorbent body is formed into a thick layer and is equipped with an elastic member for effectively bringing the both sides of the absorbent body into close contact with the user's body; No method has been proposed that would allow for the mass production of disposable shims as disclosed in Japanese Patent No. 18SS-148009.

The object of the present invention is to propose the above-mentioned method.
1111 consecutive! ! A step of forming an absorbent material: □ Giving the first continuous absorbent material two bosses and at least two parallel fold lines t in the length direction of the central portion in the width direction.
- After application, by providing slits at regular intervals t in the length direction of both measuring parts O in the width direction), form alternating KIR folded parts and non-folded parts, and fold the folded parts inward 11. a step of cutting the 1111 continuous intermittent storage material t-shimuri into lengths equivalent to 15 pieces to form each absorbent body ty#; and a step of forming each absorbent body ty# at a constant distance t- At the same time, a continuous elastic member t extends in the length direction between the continuous top sheet and the continuous back sheet located on both widthwise sides of each absorbent body. In a fit state! ! and a step of cutting the continuous laminated molded body between each absorbent body in one direction to form individual rumbling sounds. # A method of manufacturing disposable shimuri that uses mold.

jl! t% of embodiments of the method of the present invention! The commuting process will be explained in the order of steps of the method of the present invention shown in Figure I1 and with reference to Figures 112 and below as necessary.

In FIG. 1, a continuous medium sheet 11t such as a hydrophobic net-like sheet is continuously unwound from its IIk outgoing row kIIIL, and a conveyor belt 1 in the J1 kusing 12 is shown.
3 (along with ^ Kujishida 1! Inner KA Rupt (
(not shown) is guided and defibrated into a pulp sheet (not shown) by the book fiber circulation circuit 14, and ζfD11jlliAkputa!
! ! Kiyasuga Yashi) 11th First Sergeant and O @ both directions
18
0 lower S < place it on the large nakshi soap 11) axillary defibrated pulp t
@Pull the continuous carrier sheet 11 onto the #l-laminated m [stabilize it]. Continuous carrier sheet 11
In order to process a pair of the above-mentioned O-fiber pulp through the O-preschool 16) (after pressing, the 111 moving drum 11 and its attached parts), it is solved as shown in Fig. 2. Textile (k
(with the same length and arm 19)
The supported cod 1 rotating drum 171" is applied to the defibrated pulp layer 18" under pressure aS.
It's been 11K with y points maintained], that π point I! l? '
Ram 11 meeting pulp layer 18KB: IL investigation.

That pressure! As the ls position curves into one piece, sot)JEm
Both ends of the continuous carrier sea j-110 in the vicinity of point ii are defibrated (the loop layer 1m should not stand up), and the two mII is attached to the pressing rods 20 extending from both sides of the drum 17. ] Press and defibrate pulp layer 1
A continuous absorbent material consisting of a continuous carrier sheet 11 and a defibrated pulp layer 18 [a pair of 11111
On the other hand, a continuous absorbent sheet 22, such as tissue paper, which is the same as this continuous absorbent material, is continuously unwound from a 4-meter roll 221L and guided to the first embossing roll 21. *S* All R absorbent material 23 shown in Figure 1019 is polymerized on the upper surface of the absorbent material.
f formation sui 2 k.

this! Il continuous absorbent material 23! 11 embossing school 21
Emboss is added. In this way, each layer is unified into an all continuous absorbent material J! 3 with all cutter 29 etc.)
Processing, that is, K11l as shown in Figure Sa and Figure 11.
l By the width direction central part t of the continuous absorbent material 23 - the rotating wheel 24]
A pair of press wheels 2 supported at a required interval ゛・t
BIIC: ・Medium press, make two continuous parallel folds 5zsr in the length direction, and make slits 27 on the circumferential surface in both width directions K at regular intervals t. blade! $t-have! I11 cut (21C)) and fold in the length direction 30 and non-folded part 31 and t
Alternately form and! It leads to the III folding guide 32.

As shown in FIG. 3, the first folding guide 32 consists of frame members aJ1a, 33 and 33 and a band-shaped support member 34, which are opposite to each other in cross section. Frame member 33a.

Company 33b, its upper wall J15a, ! 61) The upper wall part J15a is arranged so that a barrier III that gradually becomes narrower toward the front is formed at the OPI end barrier, and a crease barrier t- is formed.
H5b Hiro, Proverb 5 As shown in Figure 5, the I11 area 360 width near the proximal end is the narrowest, and the width continues in front of it <1112 area 3
7 gradually widens toward the front, and continues from the front <w
The width of the ig area 380 is the widest and parallel, and the jl
! The width of area a7 gradually becomes wider toward the front.] Starting point JI9a, 39b klli is shifted in the rearward direction.

Support member 34 is the top wall of %Nl and 1112 area 86.37! 5a, 35b (D F'S 1m"""11
4 (D rRII X ri 4 narrow h II k'
It L, in the center of the gap, all and six areas 36, : 170 J: 11 part 35a, and the ash is also located slightly higher above @, #<, above the ga area 38 41
1! 35a*85b K-oki is located slightly lower than these. Also, as shown in Figure 4, the first
A support frame 40 is provided inside the folding guide 82, and a conveyor bell 41 is positioned between the upper surface of the support frame 40 and the upper wall portions 5rta and 85b. Also, the upper wall portion 8 of the first area 86
5a.

Above the gap between the inner ends of 85b, a pair of pressers 42 with their proximal ends attached at a required distance in the lateral direction are attached to the rotating shaft 4B.
It is supported by The first continuous absorbent material 2B guided to the first folding guide 8z is moved forward while straddling the gap between the upper wall portions 85a and 85b and positioned between these and the supporting member axis, until the non-folding portion 81 is moved forward. By pressing the non-folding portion 81 with its tip while rotating the presser 42 once while coming under the suppressor 4z, the non-folding portion 81 is forcibly pushed into the lower surface of the upper wall portions 85a, 85b. , and while moving the first continuous absorbent material 2B forward with the folded part 80 supported on the upper surfaces of the upper walls 85a and 85b, first, one side of the folded part 80 is gradually moved by the inner end of the upper wall part 85a. The supporting member 84 is made to stand up and bent over the upper surface of the support member 84, and then the other side portion is similarly raised up gradually by the inner end of the upper wall portion 85b and bent over the upper surface of the bent side (11th (See figure) As shown in 4111
23t of ail RWk collected material is guided from the conveyor belt 41 to the conveyor belt 4s.

On the other hand, as shown in FIG.
Conveyor belt 4 inside the housing 47
At the same time, the valve seat (not shown) 14 is placed in the /1 housing 47 and defibrated into an hm shape by the defibration a-rule 49, and this 011 fiber pulp is continued. Sprinkle and laminate, leaving both ends in the @ direction unattached, and place on the bottom S of the conveyor belt 480. Yo1
The explanation pulp T-mildew, aa * yarya sheet 46
Up! Stabilizes the laminated m in the lc. Press the O folding fiber pulp on this continuous carrier sheet 46 r:I-ks
111c] The first continuous absorbent material 23 after pressing is also slightly narrower. Process it. That is.

this! The I2 rotating drum 63 and the attached m material are the same as the 9M101 moving dot 17 and the pressing rod 20 described in connection with FIG. As shown in i1, the continuous Yariya sheet 460 in both width directions tII
Aiil! 46a k Bend to defibrated pulp layer s4@,
@2 continuous absorbent material 52 with
K polymerization is performed and the mixture is advanced by a conveyor belt 45.

As shown in Fig. 811, the 811 continuous absorbent material 52 polymerized on the j11 continuous absorbent material 23 is coated with a pair of knitted 2 embossing rolls 55 having an uneven pattern only on the circumferential surface of the upper roll. Ill and 112 continuous collected material 23.52 k Second cutter 56 K Yoru 1 diaper 401 & length of collected material i/c As shown in Figure II and Figure 12, each cut absorbent body s88 is moved forward at a constant distance in the backward direction.

On the other hand, as shown, the first continuous absorbent material 23 is also wide, and the continuous back sheet that should be used as the back side of the diaper, such as plastic fill 10, etc.) 59t - its unwinding roll 594
was continuously unwound onto a 1M3 rotary drum 60Jc, and arranged in parallel at regular intervals t- in the lateral direction! II
and M2 spray group 61.6211C] Back sheet 5
90. Spread 1 m of each adhesive line on the inner surface of the tube. That is, as shown in FIG. Apply adhesive M 4!4 l continuously in the transverse direction.

On the other hand, as shown in FIG.
It is continuously unwound onto a continuous back sheet 59.

On the other hand, as shown in FIG. 1, the continuous back sheet 97 has the same width and is made of a continuous surface sheet of nonwoven fabric, etc., which is to be used as the front surface of the diaper. Continuous back sheet 5 through? Continuously above-II#
SL, 1113 and 4th spray 'J%ms, so l 1st
As shown in Figure 8, each iI is applied to 66 surfaces of the Kjl continuous surface sheet.
M agent! 170.71.72. Disgrace - Apply 1 piece of bamboo, 1 piece of adhesive* 7G is continuous in the length direction and adhesive! 171 is the same 4I as the adhesive line 63 shown in l11311
! Apply it at a constant distance along its length.

1! Continuous growth JI as shown in 61m1k! FIII material 65
Adhesive 41 gl shown in No. 13111alC on 59 by stretching and contracting in the length direction and applying a continuous back sheet to one part of the surface.
580 Jh N
K x m1 adhesive! 171] Continuous growth and depravity #61
Continuous back sheet 89 (also by adhesive line 72)
K+n-erLW! After adhering the back sheet 89 to the lower surface of each absorbent body 58 with adhesive 964, it is placed on the third rotary drum 60 horizontally from the rotary wheel 'INK' as shown in Figure C1s. Continuous elastic member 651 by all pressure bonding rolls 74 supported at required intervals t- in the direction
Pressure is applied from above the continuous surface sheet 680 to the continuous laminated molded body 7, and the ζIL is advanced through the intermediate roll 76t to show the iris 1tlJK and 5jCI! KI[z
Pressure Ha -677K J: D The continuous elastic member 6s in this continuous laminated molded body 75 is
The adhesive line U1.71 CC11llila111i
(see ls)) The continuous back sheet 59 and the continuous top sheet 60 are bonded by t#, and the continuous back sheet 59 and the continuous top sheet 60 are not bonded, that is, the adhesive line 63.710 shown in FIG. The continuous elongated S member 6S is
11 with no adhesive restraint at all.

Further, each absorbent body 58 is not located at the interval Lx as shown in FIG. In order to do this, the moving speed of the continuous back sheet 59 and the continuous top sheet 66, and the moving speed of each absorbent body 58 by the conveyor belt 67 shown in FIG. Length of agent line 63.71.

It goes without saying that the width direction spacing and the front and back spacing of each absorbent body 580 should be set appropriately.

Both sides of the continuous laminate molded body 750 in the width direction thus formed are pressed into a belt shape with a constant width, that is, the width WO portion shown in FIG. Furthermore, each absorber sea (Imauc indicates L)
3) continuous back sheet 59, continuous top sheet 66, and t-crimped a-lure 9! c After pressure layering - conveyor bell)
80 The continuous laminated molded body 75 is advanced through the t-shirt and placed on the 9 parts of both ends thereof, that is, the parts that resonate with the ears of the front and rear parts of each diaper (described later).
(not shown)'tc! - Attach it by the handle group 81, move it further forward through the conveyor pallet 83, and then move the aI3 cutter 113
As shown in Fig. 1311114, when both ends in the width direction of the continuous laminated molded body 75 are cut out at regular intervals t in the length direction, a recessed arrow part 84 at K width is provided and guided to the folding device (this folding device is shown in Figures 7 and 8.As shown in Figures 7 and 8, a 1114 rotating dot 85 whose length is shorter than its width is pressed against the upper surface of the continuous laminated molded body 75, and the dot 85 is pressed in the width direction. Both sides 85a k are slightly bent inward, and in that state are guided to the second FI-containing guide 86. The continuous laminated molded product 75 OM 11111175a that has been passed through the third folding guide 86 is in a state of being sufficiently bent inward] - The bent state of both side parts 75a is restored. The conveyor belts 88 and 89 facing each other are pressed tightly to maintain the bent shape, and each absorbent body is placed at a constant distance t in the front and back direction, with 58 sections (Fig. 1114). The continuous laminated molded product 751 (see Ls) was cut in the width direction with a pair of II4 cutters 90#c, and
41E1. As shown in Figure m17, one diaper 91 is formed. When cut in this manner, the elastic members 6i at the cut ends of the diaper 91 and the continuous laminated molded body 75 contract and are drawn in from the cut ends as shown in FIG.

This is because, as already explained, the continuous elastic member 66
This is because the portion of the interval LI shown in FIG. 8 is not adhesively restrained by the adhesive at all.

As shown in FIG.
Approximately one-eighth of the length of the conveyor belt 92.9
The first pushing member 94, which is designed to move in the vertical direction when protruding from the delivery end of the conveyor belt 98, is inserted between the vertical portion 98a of the conveyor belt 98 and the vertical portion 95a of the conveyor belt 95 opposite thereto. After one end is pushed in and bent, the diaper 91 is moved while being held between both vertical parts 98m and 95g, and the one end is moved to the evacuation guide part 9.
The other end of approximately one-eighth of the diaper 91 is pushed between the pinch transfer roll group 98 and bent by the second pushing member 9'l, which is designed to make one stroke in the atomic direction when entering the diaper 6. .

The folded diaper 91 has the folded state shown in FIG. push away Note that the first and second pushing members 94 and 96 are located at one end of the diaper 91,
After pushing the other end into each of the above-mentioned positions 5, it is designed to return to its original position.

In the method of the present invention, the second continuous absorbent material 1 snow may not polymerize on the first continuous absorbent material 28, and in this case, the step of forming the second continuous absorbent material 5z may be omitted. In addition, in the case of polymerization, instead of applying embossing, bossing, or side pressing to the third continuous absorbent material 52 in the state where the first continuous absorption*2aK is polymerized as described above, the second continuous absorption material 52 is not polymerized, that is, the second Simultaneously or immediately after forming the continuous absorbent material 5z, embossing or band-shaped pressing may be applied to both sides in the width direction.

According to the method of the present invention, so-called disposable diapers can be manufactured in a series of steps using a device with a relatively simple structure, and therefore the intended purpose can be achieved. It is useful as a method for manufacturing this type of diaper.

[Brief explanation of the drawing]

The drawing is a schematic diagram of an apparatus for carrying out the method of the invention. FIG. 1 is a schematic side view of the arrangement of the above device. FIG. 2 is a perspective view showing a state in which both ends of the continuous absorbent material are bent by a rotating drum. FIG. 8 is a perspective view of the folding mechanism of the first continuous absorbent material. FIG. 4 is a sectional view taken along the line 4-4 in FIG. 8. FIG. 5 is a plan view of the first folding guide. , FIG. 6 is a perspective view of a portion forming a continuous laminated molded body. FIG. 7 is a perspective view showing a state in which both sides of the continuous laminate molded product in the width direction are folded by a rotating drum and a folding guide. FIG. 8 is a side view of the portion where both longitudinal sides of each diaper are folded. FIG. 9 is a cross-sectional view of the first continuous absorbent material. FIG. 1θ is a cross-sectional view of the second continuous absorbent material. FIG. 11 is a plan view showing the folded state of the first continuous absorbent material. FIG. 1z is a plan view showing a state in which the second absorbent material is superposed on the folded first continuous absorbent material. The 18th is a plan view showing the adhesive line on the continuous back sheet. FIG. 14 is a plan view showing how the continuous laminated molded product is cut to form individual diapers. FIG. 15 is an enlarged sectional view taken along the line 15-15 in FIG. 14. FIG. 16 is a perspective view showing the diaper folded. Fig. 17 is a perspective view showing the diaper shown in Fig. 16 with the fold partially opened◎ 11... Continuous carrier sheet 18...
...... Defibrated pulp layer 21 ...... First embossing roll □!・22・・・・・・Continuous absorbent sheet 7, 28・
......First continuous absorbent material z5...
Press wheel 26... Folding line z7... Slit 29... First cutter 80... Folding part 81・・・・・・・・・Non-folding part

Claims (1)

[Scope of Claims] (1) Forming a first continuous absorbent material; providing an emboss to the first continuous absorbent material, and at least two parallel fold lines in the length direction of the central portion in the width direction. After giving
providing slits at regular intervals in the length direction of both sides in the width direction; forming folded portions and non-folded portions alternately; and folding the folded portions inward;
The step of cutting the continuous absorbent material into the length of one diaper [to form each absorbent body; the step of cutting the continuous absorbent material into the length of one diaper; and the step of cutting the continuous absorbent material into the length of one diaper; placing each of the V&container bodies at a constant interval in the length direction between the continuous top sheet and the continuous back sheet. At the same time, a continuous elastic member is adhered in a state in which it is stretched in the length direction between the continuous front sheet and the continuous back sheet located on both sides of the wrinkled absorbent body in the width direction to form a continuous laminate molded product. A method for producing a disposable diaper, comprising the steps of: forming a continuous laminated molded body between the absorbent bodies in the width direction to form individual diapers. @) A continuous carrier which is a hydrophobic net-like sheet. Defibrated pulp is laminated on the upper surface of the sheet, and a continuous absorbent sheet is polymerized on the upper surface to form a first continuous absorbent material. A method for manufacturing a disposable diaper according to item 1. 03) Forming a first continuous absorbent material; After providing an embossing to the first continuous absorbent material and providing at least two parallel fold lines in the length direction of the central portion in the width direction,
By providing slits at regular intervals in the length direction of both sides in the width direction, folded portions and non-folded portions are formed alternately.
A process of forming a second continuous absorbent material having a width slightly narrower than that of the continuous absorbent material, superimposing it on the upper surface of the first continuous absorbent material, giving it an embossing, and pressing both sides of the width direction of the second continuous absorbent material into a band shape. ; Cutting the first and second continuous absorbent materials in their polymerized state to the length of one diaper to form each absorbent body; A tape-shaped continuous elastic member is bonded between the continuous top sheet and the continuous back sheet, and a tape-shaped continuous elastic member is attached along the length of the tape-like continuous elastic member between the continuous top sheet and the continuous back sheet, which are located on both sides in the width direction of each absorbent body. consisting of a step of adhering the continuous laminate molded product in a state in which it is stretched in the width direction; and a step of cutting the continuous laminate molded product between the respective absorbent bodies in the width direction to form individual diapers. A method for manufacturing a disposable diaper, characterized by: (4) A patent claim characterized in that defibrated pulp is laminated on the upper surface of a continuous carrier sheet which is a hydrophobic net-like sheet, and a continuous absorbent sheet is polymerized on the upper surface to form a first continuous absorbent material. A method for manufacturing a disposable diaper according to scope item 8. (5> The disposable material according to claim 8, characterized in that a defibrated pulp is laminated on the upper surface of a continuous carrier sheet that is a hydrophobic net-like sheet to form a second series 11'--cell absorbent material. How to make diapers.