JPH0966072A - Method for sticking elastic member and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assure high-speed and stable work by applying adhesives on tape- like elastic materials, such as waist bands of throw-away diapers, during the course of transporting these elastic materials and pressing the elastic materials to a moving web which is wound around a drum while holding the elastic materials stretched by utilizing a cam mechanism, thereby adhering the elastic materials to this web. SOLUTION: The plural band-shaped elastic members Ra to Rc are supplied by a vacuum attraction type conveyor 7 and are cut by a pair of cutting roll 1 and anvil roll 2 to the tape-like elastic members a to c of a prescribed width. The elastic members a to c are then transferred by a vacuum attraction type transfer roll 3 to an adhesive applying roll 4 and are coated 11 with the adhesives during the course thereof. Next, the elastic members a to c are supplied via a transfer roll 5 to a width expanding roll 6 and are vacuum attracted by plural pairs of chucks 16a,... at both ends thereof. The elastic members a to c are stretched in this state by the effect of a cylindrical cam. The elastic members a to c are then pressed to the prescribed positions of the web W carried by the vacuum drum 9 for web transportation, by which the elastic members are adhered and fixed to the web.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for continuously applying elastic members to a moving web. Specifically, it is applied to a method and a device for sticking a stretchable waistband during the production of a disposable diaper.

[0002]

2. Description of the Related Art When manufacturing a disposable diaper, a waist band, which is an elastic member having elasticity, is applied while continuously moving a web serving as a base material of the diaper.
There have been various proposals for such a method and apparatus.

As an example, as shown in FIG. 12 (I), a strip-shaped elastic member R which is continuously supplied is cut, and a pin 52 is radially provided on the outer peripheral portion of an inclined disk 51 which is arranged to face it.
There is a method in which the elastic member is stretched and is attached to the web w by rotating the inclined disk 51 by fixing it with (see Japanese Patent Laid-Open No. 2-1.
3454 and JP-A-4-218158).

Further, as shown in FIG. 12 (II), a plurality of chucks arranged in a plane arranged to continuously supply a ribbon-like elastic member R'rotatably grips and after cutting, the lateral direction of the stretched web. There is a method and a device for pasting (Japanese Patent Publication No. 63-6354).

[0005]

However, according to such a known method, it is possible to attach the waist band a having the arrangement and shape shown in FIG. 11 (II) to the disposable diaper, but FIG. It is difficult to apply it to the one in which a plurality of waist bands a'on one side as shown in I) are attached in a row in a row at intervals, because of the arrangement of elastic members to be supplied, cutting, transportation method and the like. is there.

Although not shown in FIG. 11, a normal disposable diaper has an outer web w (for example, a polyethylene sheet) to which a waist band is attached, a moisture-permeable inner web that directly contacts the body, and an intermediate web. It is formed of a core wire having an absorbability to be placed in the above, and after these materials are united in the middle of the production line, they are cut at the position of the dotted line to form an independent diaper.

As described above, the conventional method has a problem in that it cannot sufficiently cope with changes in the size, arrangement and number of waist bands. The present invention has been made in view of the above-mentioned prior art, and is a method of continuously attaching stretched tape-shaped elastic members to a moving web, and a plurality of tape-shaped elastic members are arbitrarily arranged and attached. It is an object of the present invention to provide a method and an apparatus according to the above. In particular, FIG.
Attachment of waist bands a and a'shown in (I) and FIG.
It is an object of the present invention to obtain a high-speed and stable method and device that can be applied to 1 (II).

[0008]

Means for Solving the Problems A structure relating to an elastic member sticking method of the present invention which achieves such an object is a method for continuously sticking a stretched tape-like elastic member to a moving web, which comprises a strip shape. After cutting the elastic member into a tape-shaped elastic member having a predetermined width, the tape-shaped elastic member is conveyed by a vacuum suction type conveyor and a vacuum suction type roll, and an adhesive is applied to the tape-shaped elastic member during conveyance. And
The tape-shaped elastic member is stretched by utilizing a cam mechanism, and further, while the tape-shaped elastic member with the adhesive is stretched, the tape-shaped elastic member is wound around the web transporting drum and pressed against the moving web at the confluence point to bond and It is characterized by fixing.

The elastic member sticking method of the present invention which achieves the above object is a method of continuously sticking a stretched tape-like elastic member to a moving web by cutting the belt-like elastic member. To form a tape-shaped elastic member having a predetermined width, the tape-shaped elastic member is conveyed by a vacuum suction type conveyor and a vacuum suction type roll, and the tape-shaped elastic member is stretched by utilizing a cam mechanism. It is characterized in that the elastic member is stretched and pressed against the adhesive-carrying web moving around the web transporting drum at the confluence to be adhered and fixed.

Further, the structure relating to the elastic member sticking device of the present invention which achieves the above object is a device for continuously sticking a stretched tape-like elastic member to a moving web, and a plurality of belt-like elastic members are provided. A vacuum suction type conveyor which is supplied at a predetermined speed, a pair of cutting rolls and a vacuum suction type anvil roll which cooperate to cut the belt-shaped elastic member into a tape-shaped elastic member having a predetermined width, and the cut tape-shaped elastic member. To an adhesive coating roll, a vacuum suction type transfer roll, a vacuum suction type adhesive coating roll and an adhesive coating device for coating the tape-shaped elastic member with an adhesive during transportation, and a widening roll from the adhesive coating roll. To a vacuum suction type transfer roll, a plurality of pairs of chucks for holding both ends of a tape-shaped elastic member by vacuum suction, and a widening to which guide rods supporting the chucks are fixed. And a cam roller that is integrated with the chuck and moves along the guide rod in accordance with the rotation of the widening roll, and separates the distance between the pair of chucks to extend the tape-shaped elastic member. It is characterized by comprising a cylindrical cam having a groove, and a belt device for adhering and fixing the tape-like elastic member stretched by the widening roll by pressing it at a predetermined position of the web carried by the vacuum drum for carrying the web.

Furthermore, the structure relating to the elastic member sticking apparatus of the present invention that achieves the above object is a device for continuously sticking a stretched tape-like elastic member to a moving web, wherein a plurality of belt-like elastic members are provided. A vacuum suction type conveyor which is supplied at a predetermined speed, a pair of cutting rolls and a vacuum suction type anvil roll which cooperate to cut the belt-shaped elastic member into a tape-shaped elastic member having a predetermined width, and the cut tape-shaped elastic member. Vacuum transfer type transfer roll for transferring the tape to the widening roll, an adhesive application device for applying an adhesive to a predetermined position of the web being conveyed by the web transfer vacuum drum, and both ends of the tape-shaped elastic member are held by vacuum adsorption. A widening roll to which a plurality of chucks and guide rods supporting the chucks are fixed, and a cam roller paired with the chuck are moved in accordance with the rotation of the widening roll. A cylindrical cam having a cam groove for moving along the guide rod to separate the pair of chucks and extending the tape-shaped elastic member, and the tape-shaped elastic member stretched by the widening roll for web conveyance. The present invention is characterized by comprising a belt device for adhering and fixing the web to be conveyed by a vacuum drum at a position where the adhesive is applied.

Here, in the widening roll, suction holes are arranged on the front surface and the side surface of the chuck, a plurality of protrusions are provided at a corner between the front surface and the side surface, and the tape-shaped elastic member is provided. Is equipped with a clamp for pressing the end portion of the, and the opening and closing of the clamp is performed by a cam groove provided in a cam roller and a cylindrical cam for receiving the cam roller, and the belt device has a plurality of endless belts arranged in a comb shape. It is characterized by comprising a first belt device for separating and pressing the tape-shaped elastic member and a second belt device for pressing the entire surface of the tape-shaped elastic member with a wide endless belt.

The elastic member sticking method according to the present invention is carried out in the following procedure. (1) A tape-shaped elastic member is obtained by cutting the continuously supplied belt-shaped elastic member to a predetermined size in the width direction. The number of band-shaped elastic members to be cut is the same as the number of tape-shaped elastic members to be attached. (2) The tape-shaped elastic member is conveyed. (3) An adhesive for adhering and fixing the tape-shaped elastic member to the web is applied to the surface of the tape-shaped elastic member during transportation. The adhesive may be applied to the web instead of the tape-shaped elastic member. (4) The tape-shaped elastic member is stretched during transportation. (5) Attach the stretched tape-shaped elastic member to the running web. The objectives of (3) and (4) can be achieved even if the procedure is reversed.

The elastic member sticking apparatus according to the present invention is carried out in the following procedure. (1) A plurality of strip-shaped elastic members are cut in the width direction between a cutting roll and a vacuum suction type anvil roll for cutting to form a tape having a narrow width and conveyed to a running web. (2) Each roll is of a vacuum suction type for transporting the tape-shaped elastic member, and the tape-shaped elastic member is passed between the rolls while sucking and releasing the roll-shaped outer peripheral surface within a specified rotation range. (3) The widening roll is equipped with a chuck that receives and holds both ends of the tape-shaped elastic member by a vacuum suction method, and the left and right chucks are in opposite directions by a cam mechanism that uses a cylindrical cam while the roll is rotating. The web-shaped elastic member is stretched until the required tightening force is obtained, then the web is pulled and inserted between the vacuum drum and the holding belt, and the web is wound around the vacuum drum and running. Affix to. (4) The pressing belt separates the tape-shaped elastic member from the chuck portion of the widening drum, prevents the tape-shaped elastic member stretched immediately after being attached to the web from contracting, and the adhesive causes the tape-shaped elastic member to move to the web. It effectively functions to press and compress for a predetermined time required for reliable adhesion and fixing.

[0015]

FIG. 1 shows an embodiment of the present invention.
This embodiment is applied to the case of attaching the three waist bands shown in FIG. 11 (I). As shown in FIG. 1, first, three types of belt-shaped elastic members Ra, Rb, Rc are
It is continuously supplied between the cutting roll 1 and the cutting anvil roll 2 at a predetermined speed by the vacuum suction type conveyor 7 and the pressing guide 10.

The strip-shaped elastic members Ra, Rb, Rc are raw materials for the waist band and have the same width as the length of the tape-shaped elastic member in the natural length state of the waist band. The belt-shaped elastic members Ra, Rb, and Rc have the belt-shaped elastic member Ra in the center, the belt-shaped elastic member Rb to the left, and the belt-shaped elastic member Rc.
Are arranged side by side in the width direction so as to be on the right side thereof.

The cutting roll 1 and the cutting anvil roll 2 are
As shown in FIG. 4, the band-shaped elastic members Ra, Rb,
Rc is cut into tape-shaped elastic members a ₁ , b ₁ , c ₁ having a predetermined width. That is, as shown in FIG. 4, in the cutting roll 1, in consideration of the arrangement of the band-shaped elastic members Ra, Rb, Rc, the pitch of the waist band, etc., the band-shaped elastic member cutting blades 23a, 23b, 23c are arranged in the width direction. They are arranged side by side and attached at intervals of 1 in the circumferential direction.

The supply speed of the vacuum adsorption type conveyor 7 is
Since the width of the tape-shaped elastic member is adjusted per one rotation of the cutting roll 1, the strip-shaped elastic members Ra, Rb, and Rc are moved to the position shown in FIG. ), The tape-shaped elastic member a
It is cut into ₁ , b ₁ and c ₁ . The cutting anvil roll 2
Multiple guiding a plurality of suction holes 24a to hold the tape-like elastic member a _1, b _1, c ₁ after cutting, 24b, and 24c, the strip elastic member Ra before cutting, Rb, and to the cutting position 17 Rc It has suction holes 25a, 25b, 25c, and the inside of the roll is made negative by a vacuum exhaust device (not shown). The suction holes 24a, 24b, 24c are provided in the suction anvil portion 12.

Needless to say, it is possible to attach a plurality of sets of blades to the cutting roll 1 at equal pitches and cut the strip-shaped elastic members Ra, Rb, Rc a plurality of times each time the cutting roll 1 makes one revolution. . Next, the cut tape-shaped elastic members a ₁ , b ₁ and c ₁ are
It is delivered to the first transfer roll 3 at the delivery point 18 shown in FIG. 1, and further delivered to the adhesive application roll 4 at the delivery point 19.

As shown in FIG. 5 (I), the adhesive coating roll 4 has suction holes 27a, 27b for the tape-shaped elastic member,
The inside of the roll has a negative pressure by a vacuum exhaust device (not shown). Suction holes 27a, 27b, 27c
Are provided in the adsorption anvil unit 14. The first transfer roll 3 also has a structure similar to that of the adhesive application roll 4.
The tape-shaped elastic member a ₂ conveyed to the adhesive coating roll 4,
Adhesives 26 are applied to the b ₂ and c ₂ by the adsorption holes 27a, 27b and 27c, and are held by the adhering holes 27a, 27b and 27c, and as shown in FIGS. 5 and 3B. However, the adhesive 26 is applied to the central portions of the tape-shaped elastic members a ₂ , b ₂ and c _{2 for} a specified length, and the both ends are not coated.

The tape-shaped elastic members a ₂ , b ₂ and c ₂ coated with the adhesive 26 are delivered from the adhesive application roll 4 to the second transfer roll 5 at the delivery point 20. Second
As shown in FIG. 6, the transfer roll 5 has a recessed portion 2 in a portion of the tape-shaped elastic members a ₂ , b ₂ , c ₂ facing the adhesive application portion.
8a, 28b, 28c, and recesses 28a, 28b, 2
A plurality of suction holes 29a, 29b, 29c are provided at both ends of 8c.
Having. The suction holes 24a, 24b, 24c are provided in the suction anvil portion 12.

The suction holes 29a, 29b, 2 at these both ends
9c holds by suction a tape-like elastic members _{a 2, b 2, c 2} . The recesses 28a, 28b, 28c are provided to prevent the adhesive 26 from directly contacting the roll. From the second transfer roll 5 to the tape-shaped elastic members a ₂ , b ₂ ,
Further, c ₂ is a transfer point 21 and is transferred to the widening roll 6. Here, the transfer points 18, 19,
In order to deliver the tape-shaped elastic member at 20, 21, it is performed as shown in FIG. 9, for example.

That is, the pressure inside the first transfer roll 3 on the delivery side is set to a negative pressure, and the tape-shaped elastic members a ₁ , b ₁ and c ₁ that rotate by adsorbing in the adsorption holes are adsorbed on the adhesive application roll 4 on the receiving side. When facing the hole, a negative pressure is applied to the inside of the adhesive coating roll 4 on the receiving side, a negative pressure is cut inside the first transfer roll 3 for delivery, and a positive pressure is applied in a short time by using a blower or the like. , Hand over. As shown in FIG. 9, the gap between the rolls may be set to be slightly wider than the thickness of the tape-shaped elastic member.

Further, in the widening roll 6, as shown in FIG. 7, the tape-shaped elastic members a ₃ , b ₃ , c ₃ are widened (stretched) to a prescribed length. That is, in the vicinity of the outer circumference of the widening roll 6, a plurality of guide bars 30a parallel to the axial direction,
30b and 30c are provided, a pair of chucks 16a are slidably mounted on the guide rod 30a, and an intermediate support base 43 is fixed between them. Two pairs of chucks (not shown) having a similar structure are slidably mounted on the guide rods 30b and 30c, and an intermediate support is fixed between them.

Further, a cylindrical cam 33 is concentric with the widening roll 6.
Is fixed, and two cam grooves 34a for adjusting the interval of the chuck 16a are formed on the outer surface of the cylindrical cam 33.
And two cam grooves 41a for opening and closing the chuck 16a are formed. Similarly, although not shown, four cam grooves for adjusting the distance between two pairs of chucks slidably mounted on the guide rods 30b and 30c and four cam grooves for opening and closing these chucks, respectively. Two cam grooves are formed.

A cam roller 32a is attached to the bottom surface of the chuck 16a as shown in FIGS.
The cam roller 32a is provided in the cam groove 3 of the cylindrical cam 33.
It is slidably inserted in 4a. Further, a suction anvil 31a is integrally fixed to the upper portion of the chuck 16a, and a clamp 35a is slidably mounted along a guide 37a formed in the width direction, and a tape-shaped elastic member a _{2 of the} clamp 35a is attached. An elastic body 35 'is attached to the surface that contacts with.

In the suction anvil 31a, suction holes 42a are provided in the front surface which is a surface for receiving the tape-shaped elastic member a ₁ , and suction holes 42a are also provided in the side surfaces, respectively. ₁ can be bent and adsorbed. Further, a plurality of projections 44 are provided on the corner portion sandwiched between the front surface portion and the side surface portion, whereby the tape-shaped elastic member a
The holding of ₁ is ensured. Further, the chuck 16a
A pin 38a is provided on the side surface of the pin 3a. The center of the opening / closing lever 36a is pivotally attached to the pin 38a, and the upper end of the opening / closing lever 36a is provided on the clamp 35a.
8a is engaged.

The lower end of the opening / closing lever 36a is a pin.
38a through the cam rod 40a and
The cam roller 39a is provided integrally with the cam rod 40a.
The cam roller 39a is a cam of the cylindrical cam 33.
It is slidably inserted in the groove 41a. Therefore, the second
Adhesive-coated tape-like elasticity sent from the sending roll 5.
Member a ₂Is a pair of chucks 16 at the transfer point 21
Tape with suction hole 42a of suction anvil 31a that is integral with a
Elastic member a₂Both ends of the
Is securely held by.

Here, when the widening roll 6 which has received the tape-shaped elastic member a ₂ rotates a little, the cam groove 41a for receiving the clamp opening / closing cam roller 39a and the chuck 1 are provided.
The interval of the cam groove 34a that receives the cam roller 32a of 6a changes. Therefore, as the widening roll 6 rotates in the direction shown by the arrow in the figure, the cam roller 39a moves toward the cylindrical cam 33.
Sliding along the cam groove 41a of the cam rod 40a
Is moved and the opening / closing lever 36a is swung, so that the pair of clamps 35a are guided by the guides 37 as shown by arrows in the figure.
It moves along a and presses both ends of the tape-shaped elastic member a ₂ .

Further, as the widening roll 6 rotates in the direction shown by the arrow in the figure, the distance between the pair of cam grooves 34a increases, and the cam roller 32a slides along the cam groove 34a of the cylindrical cam 33 accordingly. As a result, the pair of chucks 16a slide along the guide rod 30a along the axial direction indicated by the arrow in the drawing by a specified dimension, and the pair of chucks 1a
As the interval of 6a increases, the tape-shaped elastic member a ₂ whose both ends are held by the pair of chucks 16a is stretched to the specified length at the transfer point 22, as shown in FIG. 3C.

The interval between the pair of cam grooves 34a is gradually narrowed after passing the transfer point 22, and is set to the original interval before returning to the receiving position 21. Similarly, the opening / closing cam groove 41a of the clamp 35a is opened after passing the point 22 and is closed at the position of 21 after receiving the tape-shaped elastic member a ₂ . In the above description, the subscript a is added to each element in the case of handling the tape-shaped elastic member a, but the same configuration is applied to the case of handling the tape-shaped elastic members b and c.

Further, as shown in FIG. 9, the tape-shaped elastic members a ₃ , b ₃ , c ₃ are attached to the moving web w in the stretched state. That is, as shown in FIG.
The web-conveying vacuum drum 9 is in contact with the widening roll 6 via the transfer point 22, and the first belt device 8 and the second belt device 8'are arranged downstream of the transfer point. A web w is wound around the web-conveying vacuum drum 9 and runs, and the web w comes into contact with the stretched tape-shaped elastic members a ₃ , b ₃ and c _{3 at the} transfer point 22.

First belt device 8 and second belt device 8 '
As shown in FIG. 9, the tape-like elastic member stretched state _{a 3, b 3, c 3} , is intended to adhere and fixed against the predetermined position of the web w. FIG. 9 shows E of FIG.
The vacuum drum 9 for web transfer and the web w are shown in a transparent manner in the view of the arrow. Here, the first belt device 8 is formed by four four endless belts 45c, 45a-c, 45a-b, 45b which are laid between the drive roll 47 and the idler roll 49 in a comb shape. The belt device 8 ′ uses the wide endless belt 46 to drive the drive roll 48 and the idler roll 50.
It is the one that is handed over.

Endless belts 45c, 45a-c, 45a-
b and 45b are tape-shaped elastic members a _Three, B_Three, C_ThreeA pair
Of the web w between the chuck 16a
And press it against the web transfer vacuum drum 9
The endless belt 46 is a tape-shaped elastic member a._Three, B_Three, C_Threeof
Vacuum drum 9 for web transfer with the entire surface sandwiched by web w
To pressurize. That is, the tape-shaped elastic member a_ThreeIs
It is stretched to a specified length by a pair of chucks 16a,
At the same time as contacting the web w at the transfer point 22,
Two endless belts 45a-b, 45a of the one belt device 8
Both ends were pressed by -c and stretched to the specified length
It can be pasted on the web w as it is.

Thus, the endless belts 45a-b, 45a
After pressing the tape-like elastic member a ₃ in -c, edge cutting from widening roll 6 to open the clamp 35a with a slight time difference is performed. Then, the endless belts 45a-b, 4
The tape-like elastic member a ₃ by 5a-c in a state pressed against the web w, endless belts 45a-b and vacuum drum 9 cooperates for web transport, rotates the 45a-c, a second belt unit 8 ' The temporary attachment is completed by the time the tape-shaped elastic member a ₃ reaches.

Furthermore the second belt unit 8 tape-like elastic member a ₃ In 'is pressed entirely pressurized by wide endless belt 46,
It is securely adhered and fixed to the web w to become the waistband a of the disposable diaper. Similarly, the tape-shaped elastic members b ₃ and c ₃ are stretched to a prescribed length by a pair of chucks and come into contact with the web w at the transfer point 22, and at the same time, the four endless belts 45c and 45a of the first belt device 8 are contacted.
Both ends are pressed by -c and 45a-b, 45b, and the web is attached to the web w while being stretched to a specified length.

In this way, the endless belts 45c, 45a-c
And 45a-b, the tape-like elastic member b ₃ at 45b, c ₃
After pressing, the clamp is opened with a slight time lag and the edge of the widening roll 6 is cut off. Then, the endless belt 45 c, 45a-c and 45a-b, in a state of pressing the tape-like elastic member b _3, c ₃ to the web w in 45b, the endless belt 4 and vacuum drum 9 cooperates web conveying
5c, 45a-c and 45a-b, 45b rotate, tack up tape-like elastic member b ₃ to the second belt unit 8 ', c ₃ is reached is completed.

[0038] Further, the second belt unit 8 'in the tape-like elastic member b _3, c ₃ is pressed entirely pressurized by wide endless belt 46, certainly waistband a bonding-fixed disposable diaper web w' becomes . Therefore, the tape-shaped elastic member a
₃ , b ₃ and c ₃ are arranged on the web w as shown in FIG. 3 (D). After that, in a normal diaper manufacturing process, while the web w is wound around the web-conveying vacuum drum 9 and travels, other materials supplied by another method,
For example, it is combined with cotton wool, inner web, etc. (not shown), cut during transportation, and used as individual disposable diapers.

In this embodiment, the first belt device 8 is
The figure shows a case in which two belts 45a-b, 45a-c, 45b, 45c are provided and two of them are shared, but this shows the number of waist bands, the number of belts according to the arrangement,
It goes without saying that the presence or absence of sharing is changed. When the waist band is as shown in FIG. 11 (II), two strip-shaped elastic members are supplied, cut with a cutting roll, and the tape-shaped elastic members are transferred in the arrangement shown in FIG. 5 (II). 2 chucks
All you need is a group.

In this case, the pressing to the web is shown in FIG. 9 (II).
As shown in FIG. 5, it is possible to temporarily attach all the endless belts 45d, 45e, 45f in common and press the entire surface with the wide endless belt 46. Further, when the tape-shaped elastic member is long and cannot be adsorbed and fixed to the roll properly, the problem can be solved by adsorbing and fixing the intermediate portion of the tape-shaped elastic member as shown in FIG. 6 (II).

In this embodiment, an adhesive 26 for fixing the stretched tape-shaped elastic members a ₂ , b ₂ , c ₂ to the web w is applied to the tape-shaped elastic members a ₂ , b ₂ , c ₂ . Although it is a coating method, as in the other embodiment shown in FIG.
There is also a system in which the adhesive 26 is applied to the. This embodiment also has the same configuration except for the adhesive coating roll 4 and the second transfer roll 5. The elastic member sticking device according to the present invention has been described in detail above with reference to the drawings and the embodiments, but the present invention is not limited to the described contents, and changes can be made without departing from the gist of the present invention. .

[0042]

As described above in detail with reference to the embodiments, the present invention is constructed as described above.
There is an effect that a plurality of waist bands can be arbitrarily attached without being limited to the size, arrangement or number of waist bands. Further, the tape-shaped elastic member can be surely widened (stretched) by the widening roll, and the pasting and delivery to the web side can be performed stably at high speed.

[Brief description of drawings]

FIG. 1 is a schematic view of an apparatus according to a first embodiment of the present invention.

FIG. 2 is a schematic view of an apparatus according to another embodiment of the present invention.

FIG. 3 is a process explanatory view of the apparatus according to the first embodiment of the present invention.

FIG. 4 is a schematic view of a belt-shaped elastic member and a cutting roll unit of the device according to the first embodiment of the present invention.

FIG. 5 is a schematic view of an adhesive application roll of the device according to the first exemplary embodiment of the present invention.

FIG. 6 is a schematic view of a transport roll of the device according to the first embodiment of the present invention.

FIG. 7 is a schematic view of a widening roll of the device according to the first exemplary embodiment of the present invention.

FIG. 8 is a schematic view of a chuck of the device according to the first embodiment of the present invention.

FIG. 9 is a schematic view of a belt device of the device according to the first embodiment of the present invention.

FIG. 10 is a roll-to-roll delivery explanatory diagram of the tape-shaped elastic member of the device according to the first embodiment of the present invention.

FIG. 11 is an explanatory view of a waist band obtained by the present invention and a waist band obtained by a conventional method.

FIG. 12 is an explanatory view showing a conventional waist band attaching method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutting roll 2 Cutting anvil roll 3 1st transfer roll 4 Adhesive application roll 5 2nd transfer roll 6 Widening roll 7 Vacuum suction type conveyor 8 1st belt device 8'2nd belt device 9 Vacuum drum for web conveyance 11 Adhesive Coating device 16 Chuck 26 Adhesive 30 Guide rod 32 Cam roller 33 Cylindrical cam 34,41 Cam groove 35 Clamp 36 Opening lever 39 Cam roller 40 Cam rod w Web a, b, c Tape-shaped elastic member Ra, Rb, Rc Band-shaped elastic member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Tatsuo Tanimoto Tetsuo Tanimoto 4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima-shi, Hiroshima Mitsubishi Heavy Industries, Ltd. Hiroshima Research Institute (72) Kenichi Unoki Kannon, Nishi-ku, Hiroshima-shi, Hiroshima 4-6-22 Shinmachi, Hiroshima Research Laboratory, Mitsubishi Heavy Industries, Ltd.

Claims (6)

[Claims] 1. A method for continuously applying a stretched tape-shaped elastic member to a moving web, which comprises cutting a belt-shaped elastic member to form a tape-shaped elastic member having a predetermined width,
The tape-shaped elastic member is conveyed by a vacuum suction type conveyor and a vacuum suction type roll, an adhesive is applied to the tape-shaped elastic member during the conveyance, and the tape-shaped elastic member is stretched by utilizing a cam mechanism, Further, the elastic member sticking method is characterized in that the tape-shaped elastic member with the adhesive is stretched and pressed against a moving web that is wound around a web transport drum at a confluence point to be bonded and fixed. 2. A method for continuously applying a stretched tape-shaped elastic member to a moving web, which comprises cutting the belt-shaped elastic member into a tape-shaped elastic member having a predetermined width,
The tape-shaped elastic member is conveyed by a vacuum suction type conveyor and a vacuum suction type roll, and the tape-shaped elastic member is stretched by utilizing a cam mechanism. Press at the confluence point to the adhesive-attached web that winds around and moves,
A method of attaching an elastic member, characterized by adhering and fixing. 3. A device for continuously sticking stretched tape-shaped elastic members onto a moving web, comprising a vacuum suction type conveyor for supplying a plurality of belt-shaped elastic members at a predetermined speed, and a predetermined band-shaped elastic member. A pair of cutting rolls and a vacuum suction type anvil roll that co-operate to cut into a tape-shaped elastic member of the width, a vacuum suction-type transfer roll that transfers the cut tape-shaped elastic member to an adhesive coating roll, A vacuum suction type adhesive coating roll and an adhesive coating device for coating the tape-shaped elastic member with an adhesive, and a vacuum suction type transfer roll for transferring from the adhesive coating roll to a widening roll,
A plurality of pairs of chucks for holding both ends of the tape-like elastic member by vacuum suction and a widening roll to which guide rods supporting the chucks are fixed, and a cam roller integrated with the chuck are provided in accordance with rotation of the widening roll. A cylindrical cam having a cam groove for moving along the guide rod to separate the pair of chucks and extending the tape-shaped elastic member, and the tape-shaped elastic member stretched by the widening roll for web conveyance. An elastic member sticking device comprising a belt device for pressing and adhering and fixing to a predetermined position of a web carried by a vacuum drum. 4. An apparatus for continuously applying stretched tape-shaped elastic members to a moving web, wherein a vacuum suction type conveyor for supplying a plurality of belt-shaped elastic members at a predetermined speed and a predetermined band-shaped elastic member. A pair of cutting rolls and a vacuum suction type anvil roll that co-operate to cut into a tape-shaped elastic member of the width, a vacuum suction-type transfer roll that transfers the cut tape-shaped elastic member to a widening roll, and a web transfer vacuum. An adhesive applicator for applying an adhesive to a predetermined position on a web being conveyed by a drum, a plurality of chucks for holding both ends of a tape-like elastic member by vacuum suction, and a widening member to which guide rods supporting the chucks are fixed. The roll and the cam roller paired with the chuck are moved along the guide rod in accordance with the rotation of the widening roll to separate the pair of chucks from each other. A cylindrical cam having a cam groove for stretching the tape-shaped elastic member, and a tape-shaped elastic member stretched by the widening roll is pressed to the adhesive application position of the web carried by the web-conveying vacuum drum.
An elastic member attaching device comprising a fixing belt device. 5. The widening roll has suction holes at front and side surfaces of the chuck, a plurality of protrusions at corners between the front and side surfaces, and a tape-shaped elastic member. 5. The elastic member sticking device according to claim 3, wherein the elastic member sticking device is equipped with a clamp for pressing an end portion, and the opening and closing of the clamp is performed by a cam groove provided in a cam roller and a cylindrical cam for receiving the cam roller. 6. The belt device comprises a plurality of endless belts arranged in a comb shape, a first belt device for separating and pressing the tape-shaped elastic member and a wide endless belt for pressing the entire surface of the tape-shaped elastic member. The elastic member sticking device according to claim 3 or 4, comprising two belt devices.