KR20130103922A

KR20130103922A - Disposable diapers and sanitary napkins hapjiche top seat pin punch non-woven fabric

Info

Publication number: KR20130103922A
Application number: KR1020120024945A
Authority: KR
Inventors: 심재헌; 박명준
Original assignee: 심재헌
Priority date: 2012-03-12
Filing date: 2012-03-12
Publication date: 2013-09-25

Abstract

Laminated lamination and lamination of the nonwoven fabric and film was provided to provide a perforated nonwoven lamination with pin punching of the lamination. In the case of suction perforation, the material of the top sheet is secured by removing the perforated part of the material from the lamination, while the present invention provides a low cost perforation of the nonwoven lamination in the pin roll and the mass movement of the perforated lamination. In order to ensure the polymer material of the film was selected and the lamination strength of the nonwoven fabric and the film was adjusted. The perforated nonwoven fabric provided by the present invention is soft to the touch of the user's skin, smooth movement of body fluids is blocked and the back flow of secreted body fluids is blocked.

Description

Disposable diapers and sanitary napkins hapjiche Top Seat pin punch non-woven fabric}

This invention relates to perforated nonwoven laminates for disposable diapers and sanitary napkin top sheets. In particular, the present invention proposes a perforated nonwoven composite which can achieve low cost and high quality.

Perforated top sheets for disposable diapers and sanitary napkins are most commonly used for products made of perforated nonwoven fabrics and perforated polyolefin-based plastic films. As a method of punching the nonwoven fabric or polyolefin-based plastic film, a method of puncturing the material with a pin and a suction punching method of applying a suction force in a hole-rolled punching roll to puncture the material are used.

The most commonly used punching method for film drilling is the expensive suction drilling method. The suction drilling method sucks out the material and punctures the material, so that the perforated hole in the material is well preserved until the end product is used to maintain the performance and quality of the product.

However, in terms of drilling cost, the pin drilling method is very advantageous. The main items of the pin drilling method, which are advantageous in terms of cost, are the cost of the drilling equipment is small, the installation variation of the equipment is small, the operation management cost is low, and the unit The production efficiency is very high. It is clear that the most advantageous pin drilling method in this way is not actually used. First, when the material is punched by inserting the material in the pin roll, molecular movement of the material occurs in the material layer after the drilling, and the shape of the punched hole is changed, and if the hole is closed, the material is almost impossible to move. These points can be observed together in films and nonwovens.

Then, if you drill with the pin drilling method and observe the reduction rate of the hole size and drill the hole in consideration of the reduction rate, there will be no problem, but the performance of the product considering the fluctuation of the drilling hole is unreliable, so the product is released from the market. It becomes the cause that becomes.

Look at other problems with diapers and sanitary napkin top sheets. Currently, perforated top sheets for disposable diapers and sanitary napkins use perforated nonwovens or perforated films. These perforated sheet products have the advantages and disadvantages of materials.

First, the perforated nonwoven fabric is soft to the touch and gives a good feeling to the consumer in the early stage of wearing, but the disadvantage is that the body fluid flows back and the surface becomes wet as time passes.

Second, the perforated plastic film does not give a good feeling to the initial consumer and it is inconvenient, such as sweating when it is hot because it is not breathable, but during use, the plastic film prevents backflow of body fluids and prevents the wearing feeling from deteriorating. .

In Korean Patent Laid-Open No. 2001-11672, a perforated material which is a top sheet material developed in Korea is described. The top sheet perforated material has a perforation density of about 60 squares / cm < 2 > and the perforated base has a material described with a plastic film. However, it can be seen that the pin-opening method cannot penetrate a film, which is a top sheet material, at a density of 60 / cm 2, so that the patent-pending top sheet drilling material is dependent on a high-cost suction drilling method.

US Patent No. 4,629,643 describes a method for smoothing a film. However, even if the plastic film is softly treated by the method of the US patent, it does not reach the soft surface feel of the nonwoven fabric.

The present invention gathers the advantages of perforated nonwoven fabric and perforated film as a material of diaper and sanitary napkin top sheet, and provides a perforated nonwoven fabric mixture which does not exacerbate the feeling of wearing by preventing the back flow of body fluid in the worn state and preventing the back flow of the worn state at the beginning of wearing. I will.

If only the nonwoven fabric is punched by a pin punching method and wound on a roll and then delivered to a disposable diaper or sanitary napkin manufacturer, there is a problem in that the perforated part of the opposite side of the punch is pressed and distorted to decrease the punched hole.

The present invention is to provide a perforated non-woven fabric to ensure the quality of the product until the end use of the product is not punctured while drilling the non-woven fabric with a low-cost pin punching method.

The present invention seeks to provide a formulation of a film in which the nonwoven fabric is perforated with a pin or with an ultrasonic embossing pin and the perforated hole is effectively preserved within the range of use of the diaper and sanitary napkin top sheet.

The present invention seeks to provide a formulation of a material capable of keeping a hole formed by pin perforation in the polymer of a film as a material of a diaper and sanitary napkin top sheet.

The present invention aims to propose an adhesive strength capable of keeping the perforated holes of the nonwoven fabric in the lamination strength of the nonwoven fabric and the film as the material of the diaper and sanitary napkin top sheet.

The present invention provides a perforated nonwoven composite material perforated with pinning pin pins, and provides a perforated nonwoven mixture perforated with pins of ultrasonic embossing pin rolls, and also a hole perforated with pinning pin pins and pins of ultrasonic embossing pin rolls. To provide a perforated nonwoven laminate.

The present invention seeks to provide a pin perforated nonwoven laminate having skin affinity since hydrophobic nonwovens are used as the material for diaper and sanitary napkin top sheets.

This invention discloses a perforated nonwoven laminate.

Since the present invention is laminated and perforated waterproof film and nonwoven fabric, it collects the good properties of the nonwoven fabric and the perforated film and hides the disadvantages, and shows the good properties in disposable diapers or sanitary napkins as low-cost products.

In order to collect the goodness of the two materials, the plastic film and the nonwoven fabric of the present invention, the two materials are laminated and heat-pressed with a pin to punch the laminated nonwoven fabric and film.

In this way, the perforated nonwoven laminate not only prevents backflow of the excreted body fluids, but also the nonwoven web improves the feel before contacting the body fluids and reduces contact heterogeneity due to sweat.

Plustic waterproof film and non-woven fabric

The laminated material of this invention nonwoven fabric and plastic waterproof film is extrusion lamination adhesion.

Extrusion lamination adhesion is cited in FIG. 1. In FIG. 1, the polyolefin-based plastic polymer is melted in the extruder 10 and formed into a film 40 in the die 20. The nonwoven fabric 30 is introduced between the cooling roll 60 and the mating roll 70 to cool the formed film 40 and is pressed between the cooling roll 60 and the mating roll 70 to form the nonwoven fabric 30 and the plastic film. 40 is bonded to produce a nonwoven fabric 50.

The lamination apparatus of FIG. 1 can thin the thickness of the film adhered to the nonwoven fabric so that the good properties of both materials are well represented.

It is preferable that the plastic waterproof film adhered to the nonwoven fabric of the perforated nonwoven fabric is less than 25 g / m 2. If the weight of the plastic film is 25g / ㎡ not only is not easy to perforate the manufactured paper with a pin, but also the stiffness of the paper is reduced good properties as a top sheet of sanitary napkin disposable diapers. Extrusion lamination device of Figure 1 can be bonded to the non-woven fabric by molding the plastic film 4-24g / ㎡

As a manufacturing method of the nonwoven fabric mixture, an adhesive method of laminating a plastic film and laminating it with a nonwoven fabric before winding it up, even without extrusion lamination, is possible. The thinly formed film is not easy to be wound on a roll or to supply the rolled film to the lamination apparatus.

The material of the plastic film is a polyolefin-based polymer is used a lot, in particular a polyethylene material is used a lot. Among polyethylene materials, low density polyethylene (LDPE) is often used.

Suitable temperatures of the extruder and dies in the extrusion lamination process are 180 ° C to 300 ° C. The nonwoven fabric is molded into a thin plastic film 40 of polymer melted at a high temperature in a molding die, and then hot heat is applied to the nonwoven fabric 30 between the cooling roll 60 and the mating roll 70 as a plastic film in a molten state before being cooled. They are superimposed and pressed together with the nonwoven fabric to cool. The mating roll 70 of the lamination apparatus usually uses a rubber roll.

As the nonwoven fabric used for the lamination, both hydrophobic and hydrophilic nonwovens may be used. Preferred nonwoven fabrics are hydrophobic nonwoven fabrics having good dryness, without using emulsions such as surfactants.

Nonwoven fabrics that can be used include polypropylene-based nonwovens, polypropylene

Bicomponent nonwoven fabric mixed with polyethylene nonwoven fabric, Air through nonwoven fabric, Spunlace nonwoven fabric, Airlaid nonwoven fabric, Rayon polyester fiber Polypropylene fiber Bicomponent fiber Nonwoven fabrics.

Among the nonwoven fabrics, a nonwoven fabric containing polypropylene polymer is a low cost nonwoven fabric. Hydrophobic nonwovens are also inexpensive nonwovens.

In this invention, the lamination strength of a nonwoven fabric and a waterproof film is very important. This is because when the lamination strength is weak, the waterproof membrane film is separated from the nonwoven fabric at the time of pin drilling, so that the film is not perforated well and the film is only stretched by the pins. Therefore, the preferable lamination strength should be such that the separation of the waterproof membrane film by hand from the nonwoven fabric in the laminate of the nonwoven fabric and the waterproof membrane film is difficult to separate. The lamination strength of such a nonwoven fabric and a film is an adhesive strength of 100 g / 25 mm or more.

On the contrary, when suctioning the nonwoven fabric retaining body in Patent Publication No. 2001-0011672, the lamination strength of the nonwoven fabric and the film should be rather weak so that the punching of the well is good. The reason for this is that when the perforation of the suction film is weak against heat and stretches well, the perforation is well performed, and the nonwoven fabric laminated to the waterproof film has rigidity of the web and thus cannot be perforated by the suction.

Perforation of Nonwoven Composite

The laminated nonwoven fabric 50 is punched by pressing with a pin between the pin roll and the mating roll of FIG. The pin roll is either a pin roll assembled by pin roll embedded in a roll and an embossed pin roll made by engraving a pin-like protrusion on the roll surface.

Specifically, in FIG. 2, the nonwoven fabric 50 is fabricated between the pin roll 90 and the mating roll 100 to form the perforated nonwoven fabric 80. The pins on the pin rolls are well drilled because they have sharp tips, and the pins can be heated if necessary. Heating the fins makes it easier to drill, and the holes drilled by the fins become thermoplastic plastic holes, which become effective holes in the product after drilling.

The counter roll 100 may be a roll having a hole corresponding to the pin, or a rubber roll protecting the pointed pin end. The preferred counter roll 100 is preferably a roll having a hole corresponding to the pin.

The pin roll of FIG. 2 may use an embossing roll having a sharp surface.

In detail, the perforated nonwoven fabric retainer 80 may be manufactured by punching the nonwoven fabric retainer 50 even between the embossing roll and the counterpart roll 100 having a sharp shape.

Another method of perforating the nonwoven fabric is to perforate the nonwoven fabric in an ultrasonic embossing roll.

In FIG. 3, the nonwoven fabric retainer 50 is perforated between the ultrasonic horn 120 and the ultrasonic embossing roll 110 having a pin shape on the surface. The nonwoven fabric substrate 80 punched by the ultrasonic embossing roll 110 is a plastic film melted and punched in the shape of the end of the ultrasonic embossing pin. This perforation is different from the ultrasonic embossing, in the case of the ultrasonic embossing, the embossed portion of the film is melted and is thermally deformed while preserving the thickness and does not form a hole. Ultrasonic perforation, however, means that the film is melted at the tip of the ultrasonic embossing pin to become a thermoplastic deformation without leaving a thickness, creating a hole.

In FIG. 3, the ultrasonic horn 120 transmits ultrasonic energy generated from the ultrasonic generator to the pin end of the embossing roll, and the nonwoven fabric retainer 50 is disposed between the pin end of the embossing roll 110 and the ultrasonic horn 120 as described above. A perforated nonwoven fabric is produced.

In order to increase the perforation rate, the perforation of the nonwoven fabric mixture may combine the pin perforation of the nonwoven fabric by the apparatus of FIG. 2 and the ultrasonic perforation of the nonwoven fabric by the apparatus of FIG.

As the puncture rate increases, perforated nonwovens are used as diaper and sanitary napkin top sheets to shorten the delivery time of body secretions.

Pin boring by means of the boring pin roll cited in FIG. 2 is suitable for boring large holes and ultrasonic pin boring by means of the ultrasonic embossing roll cited in FIG. 3 is more suitable for boring smaller holes than the pin boring.

This invention has a much lower puncture density than puncture by suction. This is because the number of arrangement of pins (density of the pins) per unit area that can be pinned and installed in the pin roll is limited. Instead, the diameter of the fins is increased instead, so that the required amount of mass transfer can be achieved with a low drilling density.

The density of the perforated pins disposed in the preferred pin roll of the present invention having such a meaning is 1 to 20 pieces / cm 2.

In the present invention, the amount of material movement that is insufficient due to the perforation of the perforation pins may be achieved by overlapping the perforation process. In detail, the present invention, the pin drilling method can be duplicated two or more times, unlike the suction drilling, so that the required pin movement is repeated two or more times to realize the required amount of mass transfer.

The overlapping pin boring method is the case of pin boring and pin boring, pin boring and ultrasonic pin boring, sonic pin boring and sonic pin boring, or pin boring three times.

Thus, this invention provided the perforated nonwoven fabric which laminated and laminated the nonwoven fabric and the film, and pin-punched the laminated body. In the case of suction perforation, the material of the top sheet is secured by removing the perforated part of the material from the lamination, while the present invention provides a low cost perforation of the nonwoven lamination in the pin roll and the mass movement of the perforated lamination. In order to ensure the polymer material of the film was selected, the lamination strength of the nonwoven fabric and the film was adjusted, and the pin perforation was repeated. The perforated nonwoven fabric provided by the present invention is soft to the touch of the user's skin, smooth movement of body fluids is blocked and the back flow of secreted body fluids is blocked.

1 is an example of an apparatus for extrusion lamination of a plastic waterproof film and a nonwoven fabric
Figure 2 is an example of a device for drilling a nonwoven fabric with a pin for stabbing
Figure 3 is an illustration of an apparatus for drilling a nonwoven fabric with an ultrasonic embossing machine

1. The perforated nonwoven laminate of the present invention is a low-cost surface tactile material in contact with the skin, comprising a polypropylene polymer and weighing 5 to 30 g / m²; A low cost waterproof film having a weight of 4 to 25 g / m² as a material for preventing backflow and re-wet of body fluid excretion; Laminating as pin perforated substrates for use in disposable diapers and sanitary napkins; Pressurizing the nonwoven fabric with a heating pin between the pin roll and the counter-roll to puncture the non-woven fabric to provide a body fluid excretion delivery passage, and performing pin perforation; The drilling pins are heated to 25 to 250 ° C. to drill a thermoplastic hole in which the pin drilling holes of the nonwoven laminate retain their effectiveness as the transfer passageway; One selected from copolymers including polyethylene, ethylene, copolymers containing polypropylene and propylene in the waterproof film to impart the properties of a material in which the pin perforated hole of the nonwoven fabric retains its effectiveness as the delivery passageway. The above materials are included; The pin perforated nonwoven fabric of the laminated body has a strength of 100 g / 25 mm or more so that the pin perforated hole of the laminated body forms an effective open passage as the transfer passage.

2. Another perforated nonwoven laminate of the present invention is a low-cost surface tactile material in contact with the skin, comprising a polypropylene polymer and weighing 5 to 30 g / m²; A low cost waterproof film having a weight of 4 to 25 g / m² as a material for preventing backflow and re-wet of body fluid excretion; Laminating as pin perforated substrates for use in disposable diapers and sanitary napkins; Heat-pressurizing the lamination body between the pin roll and the mating roll to provide a body fluid excrement delivery passage to the lamination body; Supplying and pressing the nonwoven fabric between the ultrasonic embossing roll and the ultrasonic horn arranged around the ultrasonic pin to collect the ultrasonic energy in the end plane to perforate the nonwoven fabric in the shape of the ultrasonic pin end plane to form the delivery passage and; Ultrasonic fin perforated holes of the nonwoven fabric are selected from copolymers comprising polyethylene, ethylene, polypropylene, and propylene in the waterproof film to impart the properties of a material that preserves effectiveness as the delivery passageway. One or more substances are included; In order to form an open passage in which the pin perforation hole of the lamination body is effective as the transfer passage, the lamination separation strength of the lamination body is an ultrasonic pin perforated nonwoven lamination material having a strength of 100 g / 25 mm or more.

3. Another perforated nonwoven fabric of this invention is a low cost surface tactile material in contact with skin, comprising a polypropylene polymer and weighing from 5 to 30 g / m²; A low cost waterproof film having a weight of 4 to 25 g / m² as a material for preventing backflow and re-wet of body fluid excretion; Laminating as a pin perforated substrate provided for the use of disposable diapers and sanitary napkins and pressurizing the nonwoven fabric with a heating pin between the pin roll and the counter roll; A pin perforated passage that is punched by heating and pressing the nonwoven fabric between a pin roll that is punctured and a mating roll to provide a body fluid excrement delivery passage to the nonwoven fabric; Ultrasonic perforation in which the nonwoven fabric is perforated in the shape of the ultrasonic pin end plane by the ultrasonic energy by supplying and pressing the nonwoven fabric between the ultrasonic embossing roll and the ultrasonic horn arranged around the ultrasonic pins for collecting ultrasonic energy. Passages are mixed; The drilling pins are heated to 25 to 250 ° C. to drill a thermoplastic hole in which the pin drilling holes of the nonwoven laminate retain their effectiveness as the transfer passageway; At least one of a copolymer comprising polyethylene, ethylene, a copolymer comprising polypropylene, propylene in the waterproofing film to impart the properties of a material in which the pinholes of the laminate preserve the effectiveness as the delivery passageway Is included; The pin perforated nonwoven fabric of the laminate has a paper separation strength of 100 g / 25 mm or more so that the pin perforated hole of the laminate forms an effective open passage as the transfer passage.

In the extrusion molding process of the waterproof film, the nonwoven fabric and the waterproof film were extruded and laminated, and the pin roll was used as a pin-shaped embossing roll.

Example 1.

A 13 g / m 2 hydrophobic polypropylene spunbond nonwoven fabric was bonded with a 12 g / m 2 low density polyethylene film extrusion lamination method to prepare a nonwoven fabric support 50.

The extruder 10 temperature for melting the film material was divided into five zones of 150 ° C, 190 ° C, 250 ° C, 280 ° C and 300 ° C to melt the low density polyethylene. A low density polyethylene film was formed at a die temperature of 280 ° C.

The nonwoven fabric and the extruded film were stacked and pressed between the cooling roll 60 and the rubber roll 70 to prepare a nonwoven fabric support 50.

Example 2.

Perforated nonwoven fabric II was prepared by punching the nonwoven fabric I of Example 1 with the pin roll of FIG. 2.

The counter roll used the hole roll corresponding to a pin roll.

The temperature of the pin roll was 90 degreeC.

The diameter of the pin is 1.9 mm and the placement density of the pin is 32 every 4 cm 2.

After perforation, it was well punched and the hole was open.

Example 3.

Perforated nonwoven fabric I was prepared by drilling the nonwoven fabric I of Example 1 with the pin roll of FIG.

A nonwoven fabric retainer I was perforated between the ultrasonic embossing roll 110 and the ultrasonic horn 120 to emulsify ultrasonic waves. The diameter of the tip of the dodo embossing pin installed on the ultrasonic dodo embossing roll 110 was 0.5 mm and the gage diameter of the hole drilled by the ultrasonic energy at the tip of the dodo embossing pin was about 0.5 mm.

After perforation, the perforations were clear and the perforated holes were open in a circle.

Example 4.

After the nonwoven fabric I of Example 1 was drilled as in Example 3

Again perforated again as in Example 2.

As a result of the perforation, the perforation was well cleaned, the distribution density of perforated hole was increased, and the perforated hole was opened in a circular shape.

Example 5.

Disposable diapers II, III, and IV employing the perforated nonwoven laminates of Examples 2, 3, and 4 as topsheets were prepared, and the product was tested as follows.

Disposable sanitary napkins lined up side by side with the products II, III, IV and the comparative products on the market were dissolved in water at the same concentration and then poured in the same amount on the top sheet of the product. After 30 seconds, both products were compared and the top sheet product of the present invention had less re-wet than the commercial product, and it was confirmed by the naked eye and touch that the surface dries quickly even after pouring coffee.

Example 6.

Example 2) Example 3) A sanitary napkin using the perforated nonwoven fabric of Example 4) as a top sheet was made and compared with a commercial product as follows.

As a result of pouring the same amount of coffee water under the same conditions, it was confirmed by the naked eye and touch that the product of the present invention has less re-wet than the comparative product and dries quickly even when the coffee is poured.

10 is extruder, 20 is die, 30 is non-woven fabric, 40 is film, 50 is mixture, 60 is cold roll, 70 is counter roll, 80 is perforated non-woven fabric, 90 is pin roll, 10 is counter roll, 110 is embossing 120 rolls of ultrasonic horn

Claims

A low cost surface tactile material in contact with the skin, comprising a polypropylene polymer and weighing from 5 to 30 g / m²;
As a material for preventing backflow and re-wet of body fluid excretion, a low-cost waterproof film having a weight of 4 to 25 g / m² is used.
Laminated as a pin perforated substrate for use in disposable diapers and sanitary napkins,
Pressurizing the nonwoven fabric with a heating pin between the pin roll punctured and the mating roll to provide a body fluid excretion delivery passage to the nonwoven fabric, and then performs a pin perforation,
The puncture pins are heated to 25 to 250 ° C. in order to puncture the thermoplastic holes in which the pin puncture holes of the nonwoven fabric retain the effectiveness as the transfer passages,
One selected from copolymers including polyethylene, ethylene, copolymers containing polypropylene and propylene in the waterproof film to impart the properties of a material in which the pin perforated hole of the nonwoven fabric retains its effectiveness as the delivery passageway. The above substances are included,
The pin separation hole of the lamination body has a strength of 100 g / 25 mm or more so that the lamination force of the lamination body makes an open passage effective as the transfer passage.
Pin Perforated Nonwoven Laminate for Disposable Diapers and Sanitary Napkins Top Sheets

A low cost surface tactile material in contact with the skin, comprising a polypropylene polymer and weighing from 5 to 30 g / m²;
As a material for preventing backflow and re-wet of body fluid excretion, a low-cost waterproof film having a weight of 4 to 25 g / m² is used.
Laminated as a pin perforated substrate for use in disposable diapers and sanitary napkins,
In order to provide a body fluid excrement delivery passage to the paper body by heating and pressurizing the paper body between the pin roll and the counter roll, the pin perforation,
Supplying and pressing the nonwoven fabric between the ultrasonic embossing roll and the ultrasonic horn arranged around the ultrasonic pin to collect the ultrasonic energy in the end plane to perforate the nonwoven fabric in the shape of the ultrasonic pin end plane to form the delivery passage and
Ultrasonic fin perforated holes of the nonwoven fabric are selected from copolymers comprising polyethylene, ethylene, polypropylene, and propylene in the waterproof film to impart the properties of a material that preserves effectiveness as the delivery passageway. Contains one or more substances,
The pin separation hole of the lamination body has a strength of 100 g / 25 mm or more so that the lamination force of the lamination body makes an open passage effective as the transfer passage.
Pin perforated nonwoven laminate for disposable diapers and sanitary napkin top sheets.

A low cost surface tactile material in contact with the skin, comprising a polypropylene polymer and weighing from 5 to 30 g / m²;
As a material for preventing backflow and re-wet of body fluid excretion, a low-cost waterproof film having a weight of 4 to 25 g / m² is used.
It is laminated as a pin perforated substrate provided for the use of disposable diapers and sanitary napkins and the pin perforated by pressing the nonwoven laminated body with a heating pin between the pin roll and the counter roll,
A pin perforated passage which is perforated by heating and pressing the nonwoven fabric between a pin roll and a counterpart roll for puncturing to provide a body fluid excretion delivery passage to the nonwoven fabric;
Ultrasonic perforation in which the nonwoven fabric is perforated in the shape of the ultrasonic pin end plane by ultrasonic energy by supplying and pressing the nonwoven fabric between the ultrasonic embossing roll and the ultrasonic horn arranged around the ultrasonic pins for collecting ultrasonic energy. The passage is mixed,
The puncture pins are heated to 25 to 250 ° C. in order to puncture the thermoplastic holes in which the pin puncture holes of the nonwoven fabric retain the effectiveness as the transfer passages,
At least one of a copolymer comprising polyethylene, ethylene, a copolymer comprising polypropylene, propylene in the waterproofing film to impart the properties of a material in which the pinholes of the laminate preserve the effectiveness as the delivery passageway This includes,
The lamination separation strength of the lamination body is 100g / 25mm or more, so that the pin boring hole of the lamination body forms an effective open passage as the transmission passageway.
Pin perforated nonwoven laminate for disposable diapers and sanitary napkin top sheets.

The claim according to claim 1, wherein
In the extrusion process of waterproof film, non-woven fabric and waterproof film are characterized by extrusion lamination,
Pin perforated nonwoven laminate for disposable diapers and sanitary napkin top sheets.

The claim according to claim 1, wherein
The pin roll is any one of the pin rolls assembled by pin roll embedded in the rolls, and the embossed pin rolls in which the pin-shaped protrusions are carved on the roll surface.
Pin Perforated Nonwoven Laminate for Disposable Diapers and Sanitary Napkins Top Sheets

The claim according to claim 1, wherein
Nonwoven fabric of the nonwoven fabric is characterized in that the hydrophobic nonwoven fabric,
Pin perforated nonwoven laminate for disposable diapers and sanitary napkin top sheets.

The claim according to claim 1, wherein
The perforation hole density of perforated nonwoven laminate is 1 to 20 / cm2,
Pin perforated nonwoven laminate for disposable diapers and sanitary napkin top sheets.

The method according to claim 1 or 3,
Relative roll corresponding to the pin roll is characterized by arranging holes corresponding to the pin on the roll,
Pin perforated nonwoven laminate for disposable diapers and sanitary napkin top sheets.

The claim according to claim 1, wherein
Characterized in that a hydrophilic nonwoven fabric is laminated on the back of the pin perforated nonwoven fabric,
Pin perforated nonwoven laminate for disposable diapers and sanitary napkin top sheets.

The method according to claim 1 or 2,
The amount of material movement insufficient due to the perforation by the pin is repeated by performing two or more perforation processes selected from the perforating process of the nonwoven fabric by the perforating pin and the perforating process of the nonwoven fabric by the ultrasonic perforating pin. sign,
Pin Perforated Nonwoven Laminate for Disposable Diapers and Sanitary Napkins Top Sheets