JP6305373B2 - Method for continuously producing absorbent articles - Google Patents

Description

  The present disclosure relates to a method for continuously manufacturing absorbent articles.

The absorbent article is generally manufactured continuously. For example, as shown in Patent Document 1, the excision target portion 1t is separated from the continuous sheet 1 and the excision target portion 1t is sucked and collected. Recover to 70.
On the other hand, in the field of absorbent articles, development of products having functions such as an aroma function and a cooling sensation function is in progress. For example, the absorbent article described in Patent Document 2 includes a powder such as a polymer cell containing a cooling sensation agent.

JP 2012-1111018 A JP 2010-234028 A

When the absorbent article containing the powder described in Reference 2 is continuously manufactured and the trim part to be cut is continuously collected, if the powder is present in the trim part, the powder dropped from the trim part Since the body accumulates in the manufacturing apparatus and contaminates the manufacturing equipment, it becomes necessary to periodically stop the manufacturing equipment and remove the powder, thereby reducing the manufacturing efficiency. In addition, the powder deposited in the manufacturing apparatus may cause a dust explosion if specific conditions are satisfied.
Therefore, this indication aims at providing the method of manufacturing an absorptive article continuously that powder does not fall easily from the trim part cut off.

  Disclosed is an absorbent article continuum that includes a plurality of absorbent articles and a trim section to be cut comprising a skin contact layer, a clothing contact layer, and a powder layer therebetween. A method for continuously producing an absorbent article, comprising the following steps: preparing the absorbent article continuum; dividing the absorbent article continuum into the absorbent article and the trim portion; And cutting the peripheral region of the boundary line while compressing, separating the absorbent article and the trim part, and removing the trim part.

  In the method for continuously producing the absorbent article of the present disclosure, the powder is unlikely to fall from the trimmed trim part.

FIG. 1 is a process diagram of a method for continuously manufacturing an absorbent article 101 according to the first embodiment. FIG. 2 is a front view of the absorbent article 101 manufactured according to the first embodiment. FIG. 3 is a rear view of the absorbent article 101 shown in FIG. FIG. 4 is an end view taken along the IV-IV end face of FIG. FIG. 5 is a view for explaining the folded sheet 19 after the powder is applied from the powder coating machine 21 and the powder layer 5 is formed. FIG. 6 is a view for explaining a folded sheet 33 having an adhesive application region. FIG. 7 is a diagram for explaining the fifth laminated sheet 71. FIG. 8 is a view for explaining the trimmed trim part 77.

[Definition]
-Flap part In this specification, a "flap part" contains both a side flap part and a hip flap part.
-Peripheral area | region In this specification, the "peripheral area | region" regarding a boundary line means the area | region which exists in a predetermined distance in the planar direction of an absorbent article continuous body from a boundary line and the said boundary line. The peripheral region is preferably 5 times or less, more preferably 3 times or less, and even more preferably 1 time the thickness of the absorbent article continuum at the boundary line in the plane direction of the absorbent article from the boundary line. It means an area within the following distance.

The present disclosure relates to the following aspects.
[Aspect 1]
An absorbent article is continuously formed from an absorbent article continuum including a plurality of absorbent articles and a skin contact layer, a clothing contact layer, and a trim portion to be cut, which includes a powder layer therebetween. A method of manufacturing comprising:
Next steps,
Preparing the absorbent article continuum,
A step of cutting the absorbent article continuum while compressing a peripheral region of the boundary line at a boundary line defining the absorbent article and the trim part, and separating the absorbent article and the trim part. And removing the trim part,
Including the above method.
In the method according to aspect 1, since the peripheral region of the trimmed trim portion is compressed, the powder does not easily fall from the trimmed portion, specifically from the cut surface of the trimmed trim portion. . Therefore, the method described in the aspect 1 has an effect that the powder hardly contaminates the manufacturing apparatus.

[Aspect 2]
The method according to aspect 1, wherein the trim portion has an adhesive application region in which an adhesive is applied between the skin contact layer and the clothing contact layer.
In the method according to aspect 2, since the adhesive in the adhesive application region firmly connects the trimmed trim part in the thickness direction, the powder is removed from the cut surface of the trimmed part. Hard to fall. Therefore, the method described in the aspect 2 has an effect that the powder hardly contaminates the manufacturing apparatus.

[Aspect 3]
Aspect 2 in which the trim portion has an overlapping region in which the powder layer and the peripheral region overlap in the thickness direction of the trim portion, and the trim portion has the adhesive coating region in the overlapping region. The method described in 1.
In the method according to the third aspect, the adhesive application region exists in the overlap region, and the adhesive in the adhesive application region firmly connects the trimmed part cut in the thickness direction in the overlap region. Therefore, it is difficult for the powder to fall from the cut surface of the trimmed part. Therefore, the method described in the aspect 3 has an effect that the powder hardly contaminates the manufacturing apparatus.

[Aspect 4]
A mode including embossing the absorbent article and the trim part in the thickness direction along at least a part of the boundary line and forming the embossed part in the thickness direction before at least a part of the boundary line. The method as described in any one of 1-3.
In the method according to aspect 4, the powder falls from the cut surface of the trimmed trim part to form an embossed part in the absorbent article and the trim part along the boundary line of the trim part to be trimmed. Hard to do. Therefore, the method described in the aspect 4 has an effect that the powder hardly contaminates the manufacturing apparatus.

[Aspect 5]
In the step of forming the embossed portion, a low embossed portion and a high embossed portion embossed more strongly than the low embossed portion on the absorbent article and the trim portion along at least a part of the boundary line. The method according to aspect 4, wherein the embossed part is provided.
In the method according to the fifth aspect, the absorbent article and the trim portion are cut along the boundary line of the trim portion to be cut to form an embossed portion having a low embossed portion and a high embossed portion. In the trim portion, the embossed portion is less likely to break, and the powder is less likely to fall from the cut surface of the trimmed portion. Moreover, in the trimmed part that has been cut, a portion with low compression strength of the embossed portion (non-uniformity in compression strength) is less likely to occur, and the powder is less likely to fall from the portion with low compression strength. Therefore, the method described in the aspect 5 has an effect that the powder hardly contaminates the manufacturing apparatus.

[Aspect 6]
The step of forming the embossed portion passes the absorbent article and the trim portion through an embossing device including an embossing roll and an anvil roll while conveying the absorbent article continuum in a predetermined conveying direction. The method according to aspect 4 or 5, wherein a portion of the boundary line where the embossed portion is formed extends in a direction not orthogonal to the transport direction.
In the method according to aspect 6, the portion of the boundary line where the embossed portion is formed extends in a direction that is not orthogonal to the transport direction, and therefore, in the step of forming the embossed portion, the embossed portion is sufficiently compressed, As a result, the powder is unlikely to fall from the cut surface of the trimmed part. Therefore, the method according to the sixth aspect has an effect that the powder hardly contaminates the manufacturing apparatus.

[Aspect 7]
In the step of forming the embossed portion, the length of the absorbent article and the trim portion in the orthogonal direction perpendicular to the transport direction of the embossed portion is constant along at least part of the boundary line. A method according to aspect 6, wherein the embossing is in the thickness direction.
In the method described in the aspect 7, the step of forming the embossed portion is performed so that the length of the embossed portion in the orthogonal direction is constant. As a result, the crushing strength of the embossed portion becomes uniform in the trimmed trim portion, and the powder is less likely to fall from the portion of the trimmed trim portion where the strength of the embossed portion is weak.

[Aspect 8]
In the separating step, the boundary between the absorbent article and the trim portion is passed through a cutting device including a cutter roll and an anvil roll while the absorbent article continuum is conveyed in a predetermined conveyance direction. The trim section has an overlapping region where the powder layer and the peripheral region overlap in the thickness direction of the trim portion, and the trim portion includes the adhesive coating region, The method according to any one of aspects 1 to 7, wherein a boundary line portion existing in the overlapping region and existing in the overlapping region extends in a direction not orthogonal to the transport direction.
In the method according to aspect 8, since the boundary line portion that exists in the overlapping region of the boundary line is formed to extend in a direction not orthogonal to the transport direction, the peripheral region adjacent to the overlapping region is sufficiently compressed. As a result, the powder does not easily fall from the cut surface of the trimmed part. Therefore, the method described in the aspect 8 has an effect that the powder hardly contaminates the manufacturing apparatus.

[Aspect 9]
In the step of removing the trim portion, the trim portion is removed by being sucked by a suction device, and the surface to be sucked of the trim portion is formed of a film. The method described in 1.
The method according to the ninth aspect has an effect that the suction device hardly takes in the powder, and the powder hardly contaminates the suction device.

[Aspect 10]
The absorbent article continuum has a longitudinal direction and a width direction, and has a plurality of absorbent article main body parts and a flap part extending from the absorbent article main body part to the outer side in the width direction of the absorbent article. Absorbent articles are arranged at predetermined intervals in the longitudinal direction, and before the separating step, the absorbent article continuum extends in the direction in which the absorbent article continuous body extends in the material constituting the trim part and the flap part. The method according to any one of aspects 1 to 9, further comprising the step of forming the powder layer continuous from the trim portion to the flap portion by continuously applying a body.
In the method according to the tenth aspect, since the powder can be continuously applied at a high speed, the absorbent article in which the powder is uniformly applied can be manufactured at a high speed.

  A method for continuously producing an absorbent article according to the present disclosure (hereinafter sometimes simply referred to as “absorbent article production method”) will be described below in detail with reference to the drawings as appropriate.

The manufacturing method of the absorbent article of this indication includes the following processes.
A step of preparing a continuous absorbent article including a plurality of absorbent articles and a trim part to be cut off, which includes a skin contact layer, a clothing contact layer, and a powder layer therebetween (hereinafter, “preparation”) May be referred to as a "process")
-The absorbent article continuum is cut while compressing the peripheral region of the boundary line at the boundary line that divides the absorbent article and the trim part, and the absorbent article and the trim part are separated. Process (hereinafter sometimes referred to as “separation process”)
-The process of removing the trim part (hereinafter sometimes referred to as "removal process")

Moreover, the manufacturing method of the absorbent article of this indication includes the following processes depending on necessity.
-After the preparatory step and before the separation step, the absorbent article and the trim part are embossed in the thickness direction along the boundary line, and the embossed part is formed on the absorbent article and the trim part. Step of forming (hereinafter sometimes referred to as “embossed portion forming step”)
-Before the separation step, by continuously applying powder to the material constituting the trim part and the flap part in the direction in which the absorbent article continuous body extends, the trim part to the flap part. Step of forming the continuous powder layer (hereinafter sometimes referred to as “powder layer forming step”)

FIG. 1 is a process diagram of a method for continuously manufacturing an absorbent article 101 according to one of the embodiments of the present disclosure (first embodiment). The first embodiment will be described below.
In describing the first embodiment, first, the structure of the absorbent article 101 manufactured according to the first embodiment will be described.
FIG. 2 is a front view of the absorbent article 101 manufactured according to the first embodiment, specifically, a sanitary napkin. FIG. 3 is a rear view of the absorbent article 101 shown in FIG. FIG. 4 is an end view taken along the IV-IV end face of FIG.

  The absorbent article 101 has a longitudinal direction L and a width direction W. The absorbent article main body 103 extends in the longitudinal direction L, and the absorbent article 101 extends from the absorbent article main body 103 to the outside in the width direction W. Flap portions, that is, a pair of side flap portions 105 and a pair of hip flap portions 107. The pair of side flap portions 105 are disposed from the center in the longitudinal direction L of the absorbent article 101. The pair of hip flap portions 107 are disposed rearward in the longitudinal direction L of the absorbent article 101 and extend to the rear end of the absorbent article 101 in the longitudinal direction L.

  The absorbent article main body 103 includes a liquid permeable sheet 109, a liquid impermeable sheet 111, and an absorbent body 113 between the liquid permeable sheet 109 and the liquid impermeable sheet 111. The pair of side flap portions 105 of the absorbent article 101 includes a skin contact sheet 117 having a skin contact surface 115, a clothing contact sheet 121 having a clothing contact surface, a skin contact sheet 117, and a clothing contact. And an auxiliary sheet 119 between the sheets 121. As with the pair of side flap portions 105, the pair of hip flap portions 107 also includes a skin contact sheet 117 having a skin contact surface 115, a clothing contact sheet 121 having a clothing contact surface, and a skin contact. And an auxiliary sheet 119 between the sheet 117 and the clothing contact sheet 121.

  In the absorbent article 101, the absorbent article main body 103 has an adhesive part 123 fixed to the liquid-impermeable sheet 111, and the absorbent article 101, specifically, the absorbent article main body 103 is adhesive. It is fixed to the inside of the wearer's clothes through the part 123.

  The absorbent article 101 penetrates the squeezed portion 129 formed by squeezing the liquid permeable sheet 109 and the absorbent body 113 formed in the absorbent article main body 103, and the liquid permeable sheet 109 and the absorbent body 113. And a pressing part 137 for sealing the outer edge of the absorbent article 101. The pressing part 137 is formed by pressing the liquid-permeable sheet 109 and the liquid-impermeable sheet 111.

  The liquid permeable sheet 109 of the absorbent article main body 103 and the skin contact sheet 117 of the side flap 105 are continuous, and are formed from a single sheet (nonwoven fabric). Moreover, the liquid-impermeable sheet 111 of the absorbent article main body portion 103 and the clothing contact sheet 121 of the side flap portion 105 are continuous, and are formed from a single sheet (film). The same applies to the skin contact sheet 117 of the hip flap part 107 and the clothing contact sheet 121 of the hip flap part 107.

  The absorbent article 101 has a folded portion 141 formed by folding the liquid permeable sheet 109 into three outer folds, and a squeezed portion 133 formed by squeezing the folded portion 141. The folded-back portion 141 is a leak-proof wall for preventing the absorbed body fluid from flowing in the width direction of the absorbent article, that is, in the direction of the side flap portion 105 and the hip flap portion 107 from the absorbent article main body portion 103. Is forming.

  In the absorbent article 101, the liquid permeable sheet 109 of the absorbent article main body 103 has a plurality of flange portions 143 extending in the longitudinal direction L and a plurality of groove portions 147 disposed between the flange portions 143. It is a nonwoven fabric. Further, the skin contact sheet 117 of the side flap portion 105 is a nonwoven fabric having a plurality of flange portions 145 extending in the longitudinal direction L and a plurality of groove portions 149 arranged between the flange portions 145. The same applies to the hip flap portion 107. In FIG. 2, the flange portion 143 and the flange portion 145, and the groove portion 147 and the groove portion 149 are omitted for convenience.

The pair of side flap portions 105 includes a pair of adhesive portions 125 fixed to the clothing contact sheet 121, and the absorbent article 101, specifically, the pair of side flap portions 105 is a liquid-impermeable sheet. After being bent to the 111 side, it is fixed to the outside of the wearer's clothes through a pair of adhesive portions 125.
The pair of hip flap portions 107 has a pair of adhesive portions 127 fixed to the clothing contact sheet 121, and the pair of hip flap portions 107 are not bent and are interposed via the pair of adhesive portions 127. It is fixed inside the wearer's clothes.

The pair of side flap portions 105 is formed by squeezing the skin contact sheet 117, the auxiliary sheet 119, and the clothing contact sheet 121, and has a squeezed portion 139 that seals the outer edge of the absorbent article 101.
The pair of hip flap portions 107 includes a pressing portion 139 that is formed by pressing the skin contact sheet 117, the auxiliary sheet 119, and the clothing contact sheet 121 and seals the outer edge of the absorbent article 101. Further, the pair of hip flap portions 107 includes a pressing portion 131 formed by pressing a skin contact sheet 117 having a skin contact surface 115, an auxiliary sheet 119, and a clothing contact sheet 121.
Each of the pair of side flap portions 105 includes a powder layer 151 (powder layer 5) between the skin contact sheet 117 and the auxiliary sheet 119. Each of the pair of hip flap portions 107 includes a powder layer 153 (powder layer 5) between the skin contact sheet 117 and the auxiliary sheet 119.

Then, each process of 1st Embodiment is demonstrated. In the first embodiment, the “powder layer forming step” will be described in the preparation step.
[Preparation process]
In the preparation step, as shown in FIG. 1, the nonwoven fabric sheet 13 unwound from the first nonwoven fabric roll 11 is passed through a Z-folded member 15 known in the art, and then passed through an embossing device 17 so as to be compressed. A folded sheet 19 having a portion (not shown) and a folded portion (not shown) is formed. Note that the upper surface of the folded sheet 19 forms the inner surface of the absorbent article.

  In addition, the nonwoven fabric sheet 13 forms the liquid-permeable sheet 109 of the absorbent article 101, and the skin contact sheet 117 of the pair of side flap portions 105 and the pair of hip flap portions 107, and the folded portion is the absorbent article. The folded part 141 of 101 is formed, and the compressed part of the folded part forms the compressed part 133 of the absorbent article 101.

  In the powder layer forming step, a portion 23 of the folded sheet 19 that can form a pair of side flap portions, a portion 25 that can form a pair of hip flap portions, and a portion 27 that can form a trim portion to be excised. Then, the powder is applied from the powder coating machine 21 along the conveying direction MD to form the folded sheet 22 having the powder layer and having the two powder layers 5 on the folded sheet 19.

  FIG. 5 is a view for explaining the folded sheet 22 having a powder layer. The powder layer 5 has a portion 23 that can form a pair of side flap portions and a portion that can form a pair of hip flap portions across the boundary line 7 that partitions the absorbent article and the trim portion to be cut. 25 and a portion 27 that can form a trim portion to be cut, are arranged along the conveyance direction MD (longitudinal direction L of the absorbent article 101).

  Note that the powder is applied only to a portion where the pair of side flap portions can be formed and a portion where the pair of hip flap portions can be formed (the powder is not applied to the portion where the trim portion can be formed). Can be applied intermittently, but the powder is continuous into a part that can form a pair of side flaps, a part that can form a pair of hip flaps, and a part that can form a trim part. By being coated, the manufacturing efficiency and yield of the absorbent article can be increased.

  Next, in the folded sheet 19, a part 23 that can form a pair of side flap parts, a part 25 that can form a pair of hip flap parts, and a part 27 that can form a trim part to be cut off are conveyed in the conveyance direction MD. Along the (longitudinal direction L of the absorbent article 101), an adhesive is applied from the adhesive coating machine 29, on which two adhesive coating areas 31 are formed, and the adhesive coating area is A folded sheet 33 is formed.

  FIG. 6 is a view for explaining a folded sheet 33 having an adhesive application region. As shown in FIG. 6, each of the two adhesive application regions 31 includes three adhesive lines having a wavy application pattern and covers the powder layer 5. Specifically, both side edges of the adhesive application region 31 in the transport direction MD are arranged outside the both side edges of the powder layer 5 in the transport direction MD. By doing so, in the cut trim part, the adhesive existing in the adhesive coating region 31 functions as a protective wall for the powder, and the powder is less likely to fall from the cut trim part.

  Next, on the folded sheet 33 having the adhesive application region, the portion 23 that can form the side flap portion, the portion 25 that can form the hip flap portion, and the portion 27 that can form the trim portion to be cut off. In addition, the auxiliary sheets 37 wound out from the second nonwoven fabric roll 35 are stacked along the conveying direction MD to form a first laminated sheet 39.

Next, an adhesive is applied on the first laminated sheet 39 from the adhesive coating machine 41, and the absorbent body 113 is stacked thereon to form the second laminated sheet 43.
The absorber 113 is manufactured by an absorber manufacturing apparatus 45 known in the art, and the absorber manufacturing apparatus 45 is formed on the material supply unit 47, the suction drum 49, and the outer peripheral surface of the suction drum 49. A concave mold 51 and a suction part 53 are provided.

  Next, the second laminated sheet 43 is passed through the embossing device 55, the compressed portion 129 of the absorbent article 101 is formed in the second laminated sheet 43, and then the second laminated sheet 43 is passed through the through-hole forming machine 57, The third laminated sheet 59 is formed by forming the opening 135 of the absorbent article 101 there.

  Next, an adhesive is applied to the third laminated sheet 59 from the adhesive coating machine 61, and then the film 65 is unwound from the film roll 63 and stacked on the third laminated sheet 59, whereby the fourth laminated sheet 59 is obtained. A sheet 67 is formed. The film 65 forms a liquid-impermeable sheet 111 of the absorbent article main body 103 of the absorbent article 101 and a clothing contact sheet 121 of the side flap part 105 and the hip flap part 107.

[Embossed part formation process]
The fourth laminated sheet 67 is passed through an embossing device 69 including an embossing roll 69a and an anvil roll 69b, and the fourth laminated sheet 67 is squeezed in the thickness direction thereof, whereby the fifth laminated sheet 71 (absorbent article) A continuum 1) is formed.
FIG. 7 is a diagram for explaining the fifth laminated sheet 71. In the absorbent article 101, the embossing device 69 intermittently arranges a plurality of compressed parts 137 for sealing the outer edge of the absorbent article 101 and the outer edge of the absorbent article 101. A plurality of compressed parts 139 are formed. Further, the embossing device 69 forms a plurality of compressed portions 73 that are intermittently arranged in a region along the boundary line 7 of the trim portion 3 to be deleted. The pressing part 73 is formed by pressing at least the skin contact sheet 117, the auxiliary sheet 119, and the clothing contact sheet 121 in the thickness direction.

  As shown in FIG. 7, the boundary portion 7 ′ in the region where the embossed portion 73 of the trim portion 3 to be cut is formed in the boundary line 7 extends in a direction not orthogonal to the transport direction MD. . By doing so, when embossing the absorbent article 101 and the trim part 3 to be cut along the boundary line 7 by the embossing device 69, the force applied by the pair of embossing rolls is less likely to be dispersed and cut off. The embossed portion 73 of the power trim portion 3 is sufficiently squeezed. As a result, the powder is less likely to fall from the trimmed part, and the powder is less likely to contaminate the manufacturing facility.

[Separation process]
The fifth laminated sheet 71 is passed through a cutting device 75 including a cutter roll 75a and an anvil roll 75b, and the fifth laminated sheet 71 is cut by a boundary line that divides the absorbent article and the trim portion to be cut and absorbed. It isolate | separates into a property article (not shown) and a trim part (not shown).

  As shown in FIG. 8 to be described later, the trimmed portion 77 has an overlapping region 81 where the powder layer 5 and the peripheral region 79 overlap in the thickness direction of the trimmed portion 77. Further, the trimmed part 77 has an adhesive application region 31 in the overlapping region 81. Further, of the boundary line 7, the boundary line part 7 ′ existing in the overlapping region 81 is formed so as to extend in a direction not orthogonal to the transport direction MD. By doing so, the peripheral region 79 of the trim part 3 to be excised is sufficiently compressed, and the powder hardly falls from the trimmed trim part, and the powder hardly contaminates the manufacturing equipment.

[Removal process]
The separated trim portion is removed by sucking the clothing contact surface with a suction device (not shown).
FIG. 8 is a view for explaining the trimmed trim part 77. Since the trimmed portion 77 that has been cut off has the compressed portion 73 along the boundary line 7 in the overlapping region 81 where the powder layer 5 and the peripheral region 79 overlap in the thickness direction of the trimmed portion 77 that has been cut off. The powder does not easily fall from the trimmed portion 77 that has been cut off. Further, since the trimmed portion 77 has the adhesive application area 31 in the overlapping area 81, the adhesive applied to the adhesive application area 31 functions as a protective wall for the powder, It is difficult for the body to fall from the trimmed portion 77 that has been excised. Furthermore, since both side edges of the adhesive application region 31 in the transport direction MD are arranged outside both side edges of the powder layer 5 in the transport direction MD, the adhesive coating is applied in the trimmed part. The adhesive existing in the work area 31 functions as a protective wall for the powder, so that the powder is less likely to fall from the trimmed part.

  In the first embodiment, in the trimmed portion 77 that is cut, the powder layer 5 and the adhesive application region 31 are adjacent to each other in the thickness direction of the trimmed portion 77 that is cut away. Then, as long as the adhesive application region is disposed between the skin contact layer and the clothing contact layer, the location is not limited. This is because the adhesive in the adhesive application region adheres an arbitrary layer of the trimmed trim part, so that the powder does not easily fall from the trimmed trim part. From the standpoint of directly holding the powder and suppressing the falling of the powder, the adhesive coating area and the powder layer are adjacent to each other in the thickness direction of the trimmed trim part. It is preferable.

  In the first embodiment, the trim portion 77 that has been cut off has the overlapping region 81 in which the powder layer 5 and the peripheral region 79 overlap in the thickness direction of the trim portion 77 that has been cut out, and the trim portion 77 that has been cut off. However, it has the adhesive application area | region 31 in the duplication area | region 81. FIG. By doing so, in the method of the present disclosure, the powder in the powder layer is held by the adhesive in the adhesive application region in the overlapping region of the trimmed trim portion, and the powder is trimmed. It is difficult for the powder to fall off and the powder is less likely to contaminate the manufacturing apparatus.

  In the first embodiment, in the embossed part forming step, a plurality of compressed parts 73 that are intermittently arranged are formed in the region along the boundary line 7 of the trim part 3 to be excised. In the method according to the embodiment, the continuously arranged pressing parts are formed in a region along the boundary line of the trim part to be deleted. By doing so, it becomes difficult for powder to fall from the trim part which was excised, and it becomes difficult for powder to pollute manufacturing equipment.

  Moreover, when the method of this indication includes an embossed part formation process, in an embossed part formation process, an absorbent article and the trim part which should be excised along a boundary line rather than a low embossed part and a low embossed part You may form an embossing part provided with the high embossing part strongly embossed. By doing so, the embossed portion is less likely to break in the trimmed trim portion, and the powder is less likely to fall from the cut surface of the trimmed trim portion. Moreover, in the trim part which was excised, it becomes difficult to produce a portion where the compression strength of the embossed portion is low, and it becomes difficult for the powder to fall from the portion where the compression strength is low. As a result, the powder is less likely to contaminate the manufacturing facility.

  In the first embodiment, the separation step is performed by passing the fifth laminated sheet 71 through a cutting device 75 including a cutter roll and an anvil roll. However, in the method of the present disclosure, the separation step includes the peripheral region. There is no particular limitation as long as it can be cut while compressing, for example, compressing the absorbent article continuum in the thickness direction of the absorbent article continuum and setting the thickness of the absorbent article continuum to zero. Any means of cutting by is included.

In the first embodiment, the removal step is performed by sucking the clothing contact surface of the separated trim portion with a suction device. However, in the method of the present disclosure, the removal step is a method known in the art. Is implemented.
In the method of the present disclosure, when the removing step is performed by sucking the separated trim portion, it is preferable to suck the surface (film surface) formed by the film of the separated trim portion. By sucking the film surface, for example, compared with the case of sucking a surface formed by a nonwoven fabric (nonwoven fabric surface), it becomes difficult to take in the powder, and the powder is less likely to contaminate the aspirator.

In the method of the present disclosure, the powder is not particularly limited as long as it is used in this technical field, and examples thereof include a microcapsule enclosing a functional component, a superabsorbent polymer, and the like.
Examples of the material of the microcapsule include saccharides such as monosaccharides (for example, glucose), disaccharides (for example, sucrose), polysaccharides (for example, dextrin, glucomannan, sodium alginate, water-soluble starch, etc.), Examples thereof include gelatin and water-soluble polymers (for example, polyvinyl alcohol, polyvinyl acetate, etc.).

  Examples of the functional component that can be included in the microcapsule include a component selected from the group consisting of an aroma component, a cooling sensation component, a deodorant component, an antibacterial component, a skin care component, and any combination thereof.

  The fragrance component is not particularly limited as long as it is used as a fragrance in the technical field. For example, a highly volatile fragrance having a boiling point of about 250 ° C. or less, a boiling point of about 250 to about 300 ° C. Examples include volatile fragrances.

  Examples of the cooling sensation component include those known in the art as cooling sensation materials, such as those acting on a receptor activation channel (TRPM8) in skin nerves, such as menthol (for example, l-menthol) and its derivatives, methyl salicylate, camphor, essential oils derived from plants (for example, mint, eucalyptus), and the like. Moreover, as a functional component which has the said cool feeling function, what lowers | hangs ambient temperature with heat of vaporization, for example, alcohol, for example, methanol and ethanol, are mentioned.

As said deodorant component, what is known as a deodorizer in this technical field is mentioned.
Examples of the skin care component include anti-inflammatory components, antipruritic components, rash prevention components, moisturizing components and the like, and examples include menthol and methyl salicylate.

The microcapsule may further include a solvent in order to control the release of the functional component. Examples of the solvent include lipophilic alcohol solvents, ester solvents, ether solvents, ketone solvents, and hydrocarbon solvents.
An example of the hydrocarbon solvent is, for example, liquid paraffin, and an example of the ester solvent is isopropyl myristate.

In the method of the present disclosure, the skin contact sheet preferably has a basis weight of 10 to 50 g / m ² , more preferably 15 to 40 g / m ² , and even more preferably 20 to 30 g / m ² . This is from the viewpoint of the effect of the present disclosure. The skin contact sheet preferably has a thickness of 0.5 to 3.0 mm, more preferably 0.7 to 2.0 mm. This is because it is difficult for the powder to fall from the trimmed part and the wearing feeling of the absorbent article.

The basis weight is measured in accordance with “6.2 Mass per unit area (ISO method)” of JIS L 1913: 2010.
The thickness (mm) is measured as follows.
FS-60DS [measurement surface 44 mm (diameter), measurement pressure 3 g / cm ² ] manufactured by Daiei Kagaku Seisakusho Co., Ltd. is prepared and absorbed under standard conditions (temperature 23 ± 2 ° C., relative humidity 50 ± 5%). Pressurize five different parts of the body, measure the thickness of each part 10 seconds after pressurization, and take the average of the five measurements as the thickness.

  In the absorbent article of the present disclosure, when the liquid-permeable layer and / or the skin contact layer has a ridge groove structure, the absorbent article can be manufactured using a method known in the art. For example, the permeable layer and / or the skin contact sheet can be produced using the methods described in JP 2008-25079 A, JP 2008-23326 A, JP 2009-30218 A, and the like. it can.

DESCRIPTION OF SYMBOLS 1 Absorbent article continuum 3 Trim part to be cut 5 Powder layer 7 Boundary line 11 First nonwoven fabric roll 13 Nonwoven fabric sheet 15 Z folding member 17, 55, 69 Embossing device 19 Folding sheet 21 Powder coating machine 22 Powder Folded sheet having a layer 23 A part capable of forming a side flap part 25 A part capable of forming a hip flap part 27 A part capable of forming a trim part to be cut 29, 41, 61 Adhesive coating machine 31 Adhesive coating area 33 Folded sheet having adhesive coating region 35 Second nonwoven fabric roll 37 Auxiliary sheet 39 First laminated sheet 43 Second laminated sheet 57 Through-hole forming machine 59 Third laminated sheet 63 Film roll 65 Film 67 Fourth laminated sheet 71 First 5 laminated sheets 73 pressing part 75 cutting device 77 trimmed trim part 79 peripheral area 81 overlapping area

Claims (10)

An absorbent article is continuously formed from an absorbent article continuum including a plurality of absorbent articles and a skin contact layer, a clothing contact layer, and a trim portion to be cut, which includes a powder layer therebetween. A method of manufacturing comprising:
Next steps,
Preparing the absorbent article continuum;
A step of cutting the absorbent article continuum while compressing a peripheral region of the boundary line at a boundary line defining the absorbent article and the trim part, and separating the absorbent article and the trim part. And removing the trim part,
Said method.   The method according to claim 1, wherein the trim portion has an adhesive application region where an adhesive is applied between the skin contact layer and the clothing contact layer.   The trim part has an overlapping area where the powder layer and the peripheral area overlap in the thickness direction of the trim part, and the trim part has the adhesive coating area in the overlapping area. 2. The method according to 2. In the step of separating, the boundary between the absorbent article and the trim portion is passed through a cutting device including a cutter roll and an anvil roll while the absorbent article continuum is conveyed in a predetermined conveyance direction. The trim portion has an overlapping region where the powder layer and the peripheral region overlap in the thickness direction of the trim portion, and the trim portion has the adhesive coating region, 4. The method according to claim 2 , wherein a boundary line portion included in the overlapping area and existing in the overlapping area of the boundary line extends in a direction not orthogonal to the transport direction. Before the separating step, embossing the absorbent article and the trim part along at least a part of the boundary line in the thickness direction thereof, and forming an embossed part in the embossed part. Item 5. The method according to any one of Items 1 to 4 . In the step of forming the embossed portion, a low embossed portion and a high embossed portion embossed more strongly than the low embossed portion on the absorbent article and the trim portion along at least a part of the boundary line. The method according to claim 5 , wherein the embossed portion is provided. The step of forming the embossed portion passes the absorbent article and the trim portion through an embossing device including an embossing roll and an anvil roll while conveying the absorbent article continuum in a predetermined conveying direction. The method according to claim 5 or 6 , wherein a portion of the boundary line where the embossed portion is formed extends in a direction not orthogonal to the transport direction. In the step of forming the embossed portion, the length of the absorbent article and the trim portion in the orthogonal direction perpendicular to the transport direction of the embossed portion is constant along at least part of the boundary line. The method of claim 7 , wherein the embossing is in the thickness direction.   9. The step of removing the trim portion, the trim portion is removed by being sucked by a suction device, and the surface to be sucked of the trim portion is formed of a film. The method according to item.   The absorbent article continuum has a longitudinal direction and a width direction, and includes a plurality of absorbent article main body parts and a flap part extending from the absorbent article main body part to the outer side in the width direction of the absorbent article. Absorbent articles are arranged at predetermined intervals in the longitudinal direction, and before the separating step, the absorbent article continuum extends in the direction in which the absorbent article continuous body extends in the material constituting the trim part and the flap part. The method according to claim 1, further comprising forming the powder layer continuous from the trim portion to the flap portion by continuously applying a body.

Images