KR20010005732A - A method for assembling body fitting compound sanitary napkin - Google Patents

Abstract

A method of manufacturing a composite sanitary napkin 20 including a primary absorbent member 30 and a secondary absorbent member 50 is provided. The main absorbent member 30 includes a main absorbent element 34 and a fluid permeable cover superimposed on the main absorbent element 34. The sub absorbent member 50 includes a fluid permeable body directing sheet, a fluid impermeable garment directing sheet bonded to the fluid permeable body directing sheet, and a sub absorbent element positioned between the fluid permeable body directing sheet and the fluid impermeable garment directing sheet ( 56). The method according to the invention encloses a separate main absorbent element 34 arranged to provide a first predetermined spacing with a continuous fluid permeable cover web to form a continuous main absorbent web and a joining section of the continuous main absorbent web. Advancing toward and supplying a continuous fluid permeable body oriented sheet web, a continuous fluid impermeable garment oriented sheet web and a separate sub absorbent element 56 toward the joining section, wherein the separate sub absorbent element 56 is provided. ) Are arranged to provide a second spacing such that the separate sub absorbent element 56 overlaps the separate main absorbent element 34 and at least a portion of the first and second predetermined spacings overlap, Combining the continuous main absorbent member web with the continuous fluid permeable body oriented sheet web to form a continuous composite web; cutting the continuous composite web into a separate composite sanitary napkin 20 It includes the steps:

Description

A method for manufacturing a composite sanitary napkin {A METHOD FOR ASSEMBLING BODY FITTING COMPOUND SANITARY NAPKIN}

A sanitary napkin is, in its simplest form, an absorbent element (often referred to as an absorbent core) interposed between a fluid permeable body oriented sheet (often referred to as a topsheet) and a fluid impermeable garment oriented sheet (often referred to as a backsheet). It includes. The absorbent element is of course intended to receive and retain mens or other vaginal emissions. The body oriented sheet is intended to provide some comfort and dry contact with the body while allowing the fluid to flow freely through it to the absorbent elements. The garment oriented sheet is intended so that mens or vaginal discharges exiting or exiting the absorbent element do not contaminate the user's garments. In addition to the three functional elements, the sanitary napkin generally includes means for supporting the device adjacent to the user's crotch region even when the user moves to perform the intended function most efficiently. Typically, sanitary napkins have adhesive attachment means for securing the device to the crotch region of the user's underwear.

Previously known sanitary napkins perform their intended functions, but each conventional design has one or more specific deficiencies such as absorption of body fluids, prevention of contamination of the user's clothing, and / or fitness to the user's body.

With regard to disposable sanitary napkins, there are currently at least two general classifications. One classification is intended for the absorption of moderate to many menstrual flows. These sanitary napkins provide a relatively high absorption capacity. Absorption capacity is generally achieved by providing a sanitary napkin with a relatively thick and bulky absorbent member. The bulky absorbent member has a relatively large absorbent ability but may cause some uncomfortable fit. The second classification of sanitary napkins is intended for small or small menstrual flow and is generally referred to as pantyliners or pantyshields. Sanitary napkins of this classification, as a group, are thinner, somewhat more flexible, and generally more comfortable than those of the first classification. However, sanitary napkins of the second classification typically lack the absorbent capacity of the sanitary napkins of the first classification.

Attempts to provide the benefits of the two classes of sanitary napkins described above are disclosed in US Pat. No. 4,425,130 to DesMarais, issued January 10, 1984. Desmarice's composite sanitary napkin includes a main menstrual pad and panty protector, which are essentially associated with their corresponding ends so as to be free to move relative to each other along the total common length. In use, the free relative movement between the main menstrual pad and the panty protector keeps the main menstrual pad adjacent to the crotch region of the user and the panty protector remains in the user's underwear. The free relative motion between the main menstrual pad and the panty protector acts to keep the main menstrual pad near the user's crotch area, but this free movement provides stability when the main menstrual pad moves laterally past the lateral edge of the panty protector. It results in the lack of, giving the possibility to contaminate the user's underwear.

While conventional absorbent products, such as sanitary napkins, address some of the problems in achieving composite sanitary napkins, they do not address the method of making composite sanitary napkins by the method of the present invention. Therefore, the main object of the present invention is to provide a method for producing a composite sanitary napkin.

Summary of the Invention

The present invention relates to a method for producing a composite sanitary napkin comprising a primary absorbent member and a secondary absorbent member. The main absorbent member includes a main absorbent element and a fluid permeable cover superimposed on the main absorbent element. The secondary absorbent member includes a fluid permeable body directing sheet, a fluid impermeable garment directing sheet bonded to the body directing sheet, and a secondary absorbent element positioned between the fluid permeable body directing sheet and the fluid impermeable garment directing sheet. The method of the invention encloses a separate main absorbent element with a continuous fluid permeable cover web to form a continuous main absorbent member web, wherein the separate main absorbent element is arranged to provide a predetermined first spacing; Advancing a continuous primary absorbent web toward the joining section, and supplying a continuous fluid permeable body oriented sheet web, a continuous fluid impermeable garment directing sheet web and a separate secondary absorbent element towards the joining section; Wherein the subabsorbing elements of are arranged to provide a predetermined second interval such that the separate subabsorbing elements overlap with the separate primary absorbing elements and at least a portion of each of the first and first predetermined intervals overlaps; Combining the continuous main absorbent member web and the continuous liquid permeable body directing sheet web to form a continuous composite web; And a step of cutting the continuous composite web in a separate compound sanitary napkin.

The present invention also relates to a method for producing a composite sanitary napkin comprising a primary absorbent member and a secondary absorbent member. The main absorbent member includes a main absorbent element and a fluid permeable cover superimposed on the main absorbent element. The secondary absorbent member includes a fluid permeable body directing sheet, a fluid impermeable garment directing sheet bonded to the body directing sheet, and a secondary absorbent element positioned between the fluid permeable body directing sheet and the fluid impermeable garment directing sheet. The method of the invention encloses a separate main absorbent element with a continuous fluid permeable cover web to form a continuous main absorbent member web, wherein the separate main absorbent element is arranged to provide a predetermined first spacing; Advancing a continuous main absorbent web toward the joining section, feeding a continuous fluid permeable body oriented sheet web towards the joining section, and forming the continuous composite web with the continuous main absorbent web and the continuous liquid permeable Combining the body oriented sheet web and interposing a separate primary absorbent element between the continuous composite web and the continuous liquid impermeable garment oriented sheet web to form a continuous composite sanitary napkin web, wherein the separate secondary absorbent element is Arranged to provide a second predetermined spacing such that the separate sub absorbent element overlaps the separate main absorbent element and Overlapping at least a portion of each of said first and second predetermined intervals, and cutting said continuous composite sanitary napkin web with a separate composite sanitary napkin.

The present invention relates to a method for manufacturing a disposable sanitary napkin, and more particularly, to a method for manufacturing a composite sanitary napkin including a main absorbing member having a main absorbent element and a base member.

Although this specification concludes with the claims which point out this invention in detail and claim distinctly, this invention will become better understood from the following detailed description with reference to the accompanying drawings. In the accompanying drawings, like reference numerals designate like elements.

1 is a plan view of one embodiment of a composite sanitary napkin manufactured by the present invention;

FIG. 2 is a cross-sectional view taken along the longitudinal center line L of the sanitary napkin shown in FIG. 1;

3 is a cross-sectional view taken along the transverse centerline T of the composite sanitary napkin shown in FIG. 1,

4 is a cross-sectional view of another embodiment of the composite sanitary napkin manufactured by the present invention;

5 is a plan view of an unfolded fluid permeable cover having a main absorbent element of the main absorbent member;

6 is a plan view of a composite sanitary napkin including coupling means,

7 is a cross-sectional view taken along the line VII-VII of FIG. 1,

8 is a cross-sectional view of another embodiment of the composite sanitary napkin manufactured by the present invention;

9 is a cross-sectional view of another embodiment of the composite sanitary napkin manufactured by the present invention;

10 is a plan view of another embodiment of the composite sanitary napkin of the present invention,

11 is a plan view of another embodiment of the composite sanitary napkin of the present invention,

12 is a partial cross-sectional view of a composite sanitary napkin and panties worn in place by a user,

13 is a schematic side view of an exemplary process embodiment of the present invention;

14 is a schematic partial side view of the patterned cylinder of the joining unit shown in FIG. 13;

15 is a schematic partial side view of the patterned cylinder of the pressing unit shown in FIG. 13, FIG.

16 is a plan view of the first part of the assembling process of the sanitary napkin manufactured by the process shown in FIG. 13;

17 is a plan view of a second part of the assembling process of the sanitary napkin produced by the process shown in FIG. 13;

18 is a schematic side view of another exemplary process embodiment of the present invention;

19 is a plan view of a first part of the assembling process of a sanitary napkin manufactured by the process shown in FIG. 18;

20 is a plan view of a second part of the assembling process of the sanitary napkin manufactured by the process shown in FIG. 18;

21 is a schematic side view of another exemplary process embodiment of the present invention;

FIG. 22 is a first partial plan view of the assembling process of a sanitary napkin manufactured by the process illustrated in FIG. 21;

FIG. 23 is a plan view of a second part of the assembly process of the sanitary napkin produced by the process shown in FIG. 21; FIG.

The present invention relates to a method of making a body worn composite sanitary napkin that exhibits absorbency for body fluids, prevention of soiling of user clothing, and physical fitness for the user. As used herein, the term "sanitary napkin" is intended to absorb and receive a variety of exudates (eg, blood, mens and urine) that are worn by the woman and adjacent to the vulva region and are intended to be discarded after a single use. It refers to a product (ie, not intended to be washed or restored or reused). As used herein, the term “composite sanitary napkin” refers to a sanitary napkin consisting of separate components that are combined together to form a single structure. Interlabial devices that are located partially inside and partially outside of the wearer's vestibule are also within the scope of the present invention. As used herein, the term "vulva" refers to the external genitalia of the female and is limited to the labia majora, labia minora, clitoris and vestibular.

Before describing the method of the present invention, one preferred embodiment of the composite sanitary napkin is described. 1 through 3, one preferred embodiment of a composite sanitary napkin 20 is shown. The composite sanitary napkin 20 has two surfaces, a body contact or directing surface 20A alc garment contact or directing surface 20B. The composite sanitary napkin 20 has a first end region 27, a central station area 28, a second end region 29, a longitudinal side 16 and a lateral end 18. The composite sanitary napkin 20 has two centerlines, a longitudinal centerline L and a transverse centerline T. As used herein, the term “longitudinal” refers to a line, axis, or plane in the plane of a composite sanitary napkin aligned with a vertical plane that divides the standing wearer to the left and right when the composite sanitary napkin is worn (ie, approximately parallel to the vertical plane). Refers to the direction. As used herein, the term "lateral" or "lateral" refers to a line, axis, or direction that lies within the plane of a composite sanitary napkin that is interchangeable and nearly perpendicular to the longitudinal direction.

As shown in FIGS. 1 to 3, the composite sanitary napkin 20 includes a main absorbent member 30 and a secondary absorbent member (base member) 50 coupled to each other by a coupling means 70. The primary and secondary absorbent members each have a corresponding body facing surface and a garment facing surface. The main absorbent member 30 has a longitudinal side portion 24 and a lateral end 25 which together form the periphery of the main absorbent member 30. The main absorbent member 30 also has a longitudinal length PL, a transverse width PW and a thickness PT. The sub absorbent member 50 has a longitudinal side portion 21 and a lateral end 22 which together form a periphery of the sub absorbent member 50. The sub absorbent member 30 also has a longitudinal length SL, a transverse width SW and a thickness ST. As shown in FIG. 1, the composite sanitary napkin 20 has a flap 33 extending from the longitudinal side 21 of the sub absorbent member 50 in its central region 28.

The primary absorbent member 30, as its name implies, is a component of a composite sanitary napkin intended to absorb most of the body fluids released by the user. The main absorbent member 30 has a generally rectangular shape extending longitudinally along the longitudinal center line L. As shown in FIG. In a preferred embodiment, the longitudinal length PL may be approximately equal to the longitudinal length SL of the sub absorbent member 50. The lateral width PW may be generally narrower than the lateral width PW of the sub absorbent member 50. The primary absorbent member 30 includes a primary absorbent element, such as an absorbent core 34, and a fluid permeable cover, such as a fluid permeable topsheet 32 that is superimposed on the absorbent core 34.

The top sheet 32 is preferably flexible, good to the touch, and non-irritating to the wearer's skin. In addition, the top sheet 32 is fluid permeable, so that the fluid can easily penetrate the thickness thereof. Suitable topsheets 32 include woven and nonwoven materials; Polymeric materials such as perforated thermoplastic films, perforated plastic films, hydroformed thermoplastic films; Porous foams; Reticulated thermoplastic film; And thermoplastic scrims. Suitable woven and nonwoven materials can be made of natural fibers (eg, wood or cotton fibers), synthetic fibers (eg, polymer fibers such as polyester, polypropylene or polyethylene fibers) or a combination of natural and synthetic fibers. Preferred topsheets include perforated molded films. Perforated molded films are preferred for topsheets because they are permeable to body exudates but not absorbent and are less likely to cause fluid to flow backwards to wet the wearer's skin. Thus, the surface of the molded film in contact with the body remains dry, thereby reducing soiling of the body and giving a more comfortable feeling for the wearer. Suitable molded films include U.S. Pat. U.S. Patent No. 4,342,314 to Radel et al., U.S. Patent No. 4,463,045 to Ahr et al. On July 31, 1984 and U.S. Patent to Baird on April 9, 1991. 5,006,394. Each of these patents is incorporated herein by reference. Preferred topsheets for the primary absorbent member are molded films of sanitary napkins described in one or more of the above patents and marketed as "DRI-WEAVE" by The Procter & Gamble Company, Cincinnati, Ohio.

The body surface or exposed surface of the molded film topsheet helps fluid move through the topsheet faster than it was not hydrophilic to reduce the likelihood that menstrual fluid would flow into and out of the absorbent core rather than be absorbed by it. May be hydrophilic. In a preferred embodiment, the surface active agent may be incorporated into the polymeric material of the molded film topsheet as disclosed in PCT Publication No. WO93 / 09741, published May 23, 1993 in the name of Aziz. The PCT / Publication is incorporated herein by reference. Alternatively, the body surface of the topsheet is made hydrophilic by treating with a surface active agent as disclosed in U.S. Patent No. 4,950,264, issued to Osborn on August 21, 1990 (incorporated herein by reference). Can be.

In a preferred embodiment, as shown in FIG. 4, the topsheet 32 may include a nonwoven fabric 37 and a molded film 36 superimposed thereon. The molding film 36 extends from the first surface 38 facing outwards, the second surface facing the nonwoven fabric 37 and the absorbent core 34, and from the first surface 38 to the second surface 39. Has an opening 42. The area of the opening 42 in the second surface 39 adjacent the absorbent core 34 is generally smaller than the area of the opening 42 in the first surface 38. Since the opening area of the first surface 38 is generally larger than the opening area of the second surface 39, fluid can easily pass through the topsheet 32 toward the absorbent core 34. However, this prevents fluid contained within the absorbent core 34 from moving outward from the absorbent core 34 to wet the wearer's skin. The nonwoven 37 overlaps the second surface 39 of the molded film. The molded film 36 and the nonwoven fabric 37 each have a rectangular shape when unfolded as shown in FIG. Topsheet 32 has a longitudinal side 45 and a transverse end 46. The molded film 36 has a corresponding longitudinal side 43 and a transverse end 44 and the nonwoven 37 has a corresponding longitudinal side 47 and a transverse end 48. The molded film 36 and the nonwoven fabric 37 may be overlapped by any suitable method. Preferably, the molding film 36 and the nonwoven 37 may be joined to each other along the longitudinal side 45 by a plurality of separate dots 49. It can be formed by applying pressure, heat, pressure and heat, and / or adhesive to separate points. Alternatively, the molding film 36 and the nonwoven 37 may be bonded to each other along the entire length of the longitudinal side 45.

The absorbent core 34 may be any absorbent means that are generally compressible, compatible, elastic, non-irritating to the wearer's skin and can absorb and receive body exudates. Absorbent core 34 may be made from a variety of fluid absorbent materials commonly used in disposable sanitary napkins and other disposable absorbent articles. Examples of suitable absorbents include pulverized wood pulp (commonly referred to as air felt), creped cellulose wadding, such as disclosed in U.S. Patent No. 5,217,445 to Young et al. On June 8, 1993. Cross-linked modified cellulose fibers, capillary channel fibers (i.e. fibers with intrafibrous capillary channels, such as those disclosed in U.S. Patent No. 5,200,248 issued to Thompson, April 6, 1993), (Dess, dated Nov. 9, 1993). Absorbent foam (as disclosed in US Pat. No. 5,260,345 to Marais et al. And US Pat. No. 5,268,244 to Dec. Marais et al. December 7, 1993), US Pat. Thermally bonded airlay materials (such as disclosed in Patent No. 5,607,414), US Patent No. 4,673,402 to Weisman et al. On June 16, 1987, and Hydrogel-forming polymer agent, such as disclosed in US Pat. No. 4,935,022 to Rasch et al., June 19, 1990, absorbent sponges, synthetic staple fibers, polymer fibers, peat, or any equivalent material or combination of materials Can be mentioned. Suitable absorbent cores comprising foam are described in US Pat. No. 5,260,345 to Desmaris, et al., November 9, 1993, US Pat. No. 5,147,345, Sep. 22, 1992, issued to Young et al., September 15, 1992. U.S. Patent No. 5,1949,720 to Desmaris et al., U.S. Patent No. 5,198,472 to Desmaris et al. On March 30, 1993 and U.S. Patent No. 5,250,576 to Desmaris et al. On October 5, 1993. Is disclosed. Additional cores comprising foams are disclosed in EP 0 293 208 B1. Absorbent cores including sponges are disclosed in US Pat. Nos. 3,512,530 and 3,954,493 and French Patent 2,203,827.

The material selected for use as the absorbent core preferably has flexibility, softness, suitability, compressibility, and elasticity to enhance body wear and comfort of the primary absorbent member 30. Preferably, the main absorbent member 30 is compressible to deform by the relatively small force experienced during normal use. In addition to being compressible, the material constituting the absorbent core 34 is preferably suitable so that the primary absorbent member 30 can improve the wear into or around the labia and vulva. The primary absorbent member 30 is compressible and adaptable by relatively small forces exerted by the female external genitalia during use, and it is also important to have sufficient elasticity so that it will not permanently collapse when subjected to conventional wearing forces. Preferably, the primary absorbent member 30 has sufficient elasticity and is therefore adapted to the contour of the body to provide close contact with the exposed genitalia of the female. The close contact of the female with the exposed genitals helps to provide better movement of the fluid from the user into the main absorbent member without causing the fluid to bypass and / or exit the main absorbent member. While the elasticity of the absorbent core 34 provides improved wear, it should be balanced against the needs of products that have both softness and comfort for the wearer.

In a preferred embodiment, the absorbent core 34 includes hydrophilic fibers such as hydrogel-forming polymers and air felts. Preferably, the absorbent core 34 comprises from 10% to 60% hydrogel-forming polymer. More preferably, the absorbent core 34 comprises 15% to 50% hydrogel-forming polymer. Absorbent core 34 may comprise between 50% and 85% air felt. If desired, the absorbent core 34 may also include hydrophobic fibers. As shown in FIG. 3, the absorbent core 34 is made generally cylindrical to provide a generally cylindrical shape to the main absorbent member 30. Although the absorbent core 34 shown in FIG. 3 has a generally circular cross section, the absorbent core may be manufactured in various shapes such as rectangular, triangular, elliptical, square, pentagonal, U-shaped, Z-shaped, and the like.

Topsheet 32 may wrap absorbent core 34 as shown in FIGS. 2 and 3. Topsheet 32 has a longer length and wider width than absorbent core 34 (shown in FIG. 5). The transverse width of the topsheet 32 is greater than twice the transverse width of the absorbent core 34. This allows the longitudinal side 45 of the topsheet 32 to overlap under the absorbent core 34 to surround the absorbent core 34 as shown in FIG. 3. The longitudinal side 45 of the topsheet 32 may be secured by a suitable method to maintain the surrounding shape. Suitable methods include, but are not limited to, adhesives such as line adhesives, spiral adhesives or point adhesives. In the preferred embodiment shown in FIGS. 3 and 5, a line adhesive 51 is added to one of the longitudinal sides 45 of the topsheet 32 along the entire longitudinal length. Alternatively, intermittent line adhesive may be added along the entire longitudinal length.

Topsheet 32 is coupled to absorbent core 34 by any suitable means. Suitable means include bonding the topsheet 32 and the absorbent core 34 with an adhesive by applying an adhesive, a line adhesive, a point adhesive between the topsheet 32 and the absorbent core 34, but It is not limited. Alternatively or additionally, the topsheet 32 entangles the fibers of the absorbent core 34 with the topsheet 32, thereby enclosing the topsheet 32 with a plurality of individual melt bonds. 34 may be bonded to the absorbent core 34 by melt bonding, or by any means known in the art. In order to ensure proper fluid movement between the topsheet 32 and the absorbent core 34, the topsheet 32 is preferably fixed substantially continuously to the bottom absorbent core 34 over a common bond or interface. . By securing the topsheet 32 substantially continuously to the lower absorbent core 34, the topsheet 32 will have a reduced tendency to separate from the absorbent core 34 during use. Separation of absorbent core 34 from topsheet 32 will impede fluid movement from topsheet 32 into lower absorbent core 34. Thus, the body facing side of the absorbent core 34 can be fixed to the topsheet 32 by an adhesive, while the body facing side of the absorbent core 34 is fluid from the absorbent core 34 into the sub absorbent member 50. It may not be fixed to the top sheet 32 to delay the movement.

It is preferable that the main absorbent member 30 has a circular or oval cross section, but the main absorbent member 30 may have any cross-sectional shape in a state where stress is not applied. The length PL, width PW and thickness PT of the main absorbent member 30 may have any convenient dimension. The length PL is preferably about 2 cm to 35 cm, more preferably about 10 cm to 35 cm, and most preferably about 20 cm to 35 cm. Preferably, the length PL of the main absorbent portion 30 may be approximately equal to the length SL of the sub absorbent member 50. The width PW is preferably about 0.5 cm to 5 cm, more preferably about 1 cm to 5 cm, and most preferably about 2 cm to 4 cm. The width PW of the main absorbing member 30 may be smaller than the width SW of the sub absorbing member 50. The thickness PT is preferably about 0.2 cm to 2.0 cm, more preferably about 0.2 cm to 1.5 cm, and most preferably about 0.4 cm to 1.2 cm. Preferably, the thickness PT of the primary absorbent member 30 may be larger than the thickness of the secondary absorbent member 50. The ratio of the thickness PT to the width PW, i.e., (PT / PW) may be about 0.05 to 1.5. Preferably, the ratio is 0.08 to 1.00, more preferably, may be 0.08 to 0.5.

The caliper of the main absorbent member 30 is determined by the following test. Comparative gauge, more specifically Peacock Gage Model No. available from Ozaki Manufacturing Co., LTD. 307 is required. The comparison gauge shall have a circular comparison foot made of aluminum with a weight of 9.0 grams and a contact surface of 16 cm 2. The comparison gauge is zero adjusted. 60.0 grams of stainless steel weights are installed on the spindle extending over the comparison dial. The comparison foot is raised and a main absorbing member is installed on the base plate with the garment surface facing downward. The main absorbent member is positioned on the base plate so that the foot is in the area of the main absorbent member where measurement is required when the foot descends. The main absorbent member should be smooth, ie without wrinkles. The foot is slowly lowered onto the main absorbent member. 5 to 10 seconds after the foot is in contact with the main absorbent member, the caliper of the main absorbent member is determined by reading the comparison dial.

It is preferable that the main absorbing member 30 is relatively suitable. It is desirable to keep it relatively compliant so that the primary absorbent member fits easily into the labia during use. It has been found that a main absorbent member having a width and / or a thickness is comfortably wearable near the labia area. Although the main absorbing member has been described above as having a thickness larger than the width or thickness, it can be inclined in the labia groove if they have sufficient suitability. However, it is not necessary for all of the main absorbent member to be sandwiched in the labia groove, and it is preferable that a part of the main absorbent member can be fitted in the labia groove.

The primary absorbent member 30 may comprise optional elements. The primary absorbent member 30 may optionally include an elastic member having an absorbent core 34. Suitable materials for use as elastic members include, but are not limited to, other synthetic materials such as nylon, polypropylene, polyurethane, polyethylene, polyester synthetic rubber and molded films, or natural materials such as rubber, sponges or the like under normal wearing conditions of a sanitary napkin in use. Suitable materials may be used to prevent collapse, but are not limited thereto. The elastic member may be manufactured in various forms such as rectangular, triangular, elliptical, square, pentagonal, U-shaped, Z-shaped and the like. The elastic member may extend over the entire length of the main absorbent member 30. The elastic member may extend over a portion of the length of the primary absorbent member 30. The elastic member may be located in the first end region 27, the central region 28, the second end region 29, or a combination of the regions. For example, the elastic member is located in either one of the first end region 27 and the second end region 29 of the main absorbing member, or the first end region 27 and the second end region of the main absorbing member ( 29) or in the central region 28 of the main absorbent member, or in the central region 28 and the end regions 27, 29 of the main absorbent member.

Optionally, the primary absorbent member 30 may include a trapping layer positioned between the topsheet 32 and the absorbent core 34. The capture layer may perform several functions, including improving the wicking of the effluent over and into the absorbent core 34. By improving the wicking of the effluent, the capture layer makes the distribution of the effluent evenly across the absorbent core more even. The capture layer may be composed of several different materials including nonwoven or woven webs of synthetic fibers comprising polyester, polypropylene or polyethylene, natural fibers comprising cotton or cellulose, mixtures of these fibers, or any equivalent material or combination of materials. It may be made of a material. Examples of sanitary napkins having a capture layer and a topsheet are described in detail in U.S. Patent No. 4,950,264 to Osborne and PCT Application WO 93/11725 to Cree et al., Published June 24, 1993. . Each of these documents is incorporated herein by reference. In a preferred embodiment, the collecting layer can be combined with the topsheet by conventional means of bonding the webs together, most preferably by melt bonds as detailed in the PCT application.

1 to 3A, the second essential component of the composite sanitary napkin 20 is a sub absorbent member (base member) 50. The secondary absorbent member 50 has a generally rectangular shape extending longitudinally along the longitudinal center line L. As shown in FIG. In the preferred embodiment, the longitudinal length SL may be approximately equal to the longitudinal length PL of the main absorbent member 30. The transverse width SW may be generally wider than the transverse width PW of the main absorbent member 30. The sub absorbent member 50 has a longitudinal side portion 21 and a lateral end portion 22. In the preferred embodiment shown in FIG. 1, a pair of flaps 33 extend outward from the longitudinal side 21 in the central region 28. The secondary absorbent member 50 includes a fluid permeable body oriented sheet or fluid permeable top sheet 52, a fluid impermeable garment oriented sheet or fluid impermeable back sheet 54 coupled to the top sheet 52, and a top sheet 52. ) And a subabsorbing element 56 positioned between the backsheet 54.

The topsheet 52 may be a fluid permeable material commonly used in sanitary napkins, disposable diapers, and the like. This may be any of the materials described above, such as useful for the topsheet 32 of the main absorbent member 30. Preferred topsheet 52 comprises a perforated formed film. Perforated molded films are preferred for topsheets because they penetrate but do not absorb body exudates, and there is less tendency to wet the wearer's skin by flowing the fluid backwards. Thus, since the surface of the molded film in contact with the body remains dry, the likelihood of soiling the body is reduced to give the wearer a more comfortable feeling. Suitable molding films include U.S. Patent No. 3,929,135 to Thomson on December 30, 1975, U.S. Patent No. 4,324,246 to Mulan et al. On April 13, 1982, to Ladell on August 3, 1982. U.S. Patent No. 4,342,314, U.S. Patent No. 4,463,045, issued July 31, 1984 to Ard et al, and U.S. Patent No. 5,006,394, issued April 9, 1991 to Baird. Each of these patents is incorporated herein by reference. Preferred topsheets for primary absorbent members are disclosed in one or more of the above patents and are molded films of sanitary napkins sold under the trademark “DRI-WEAVE” by The Procter & Gamble Co., Cincinnati, Ohio.

Absorbent element 56 may be an absorbent material commonly used in sanitary napkins, disposable diapers, and the like. This may be any of the materials described as useful for the absorbent core 34 of the primary absorbent member 30. In practice, most of the body fluid is absorbed by and accommodated in the absorbent core 34 of the main absorbent member 30. One important function of the secondary absorbent member 50 is to protect the user's clothing from being polluted by the absorbent fluid which escapes from the primary absorbent member 30 or accidentally bypasses the primary absorbent member 30. Thus, the total absorbent capacity of the absorbent element 56 may be somewhat smaller than that of the absorbent core 34. Since the absorbent core 34 is preferably intended to absorb most or substantial amounts of body fluid during use, its absorbent capacity will be somewhat larger or considerably greater than that of the absorbent element 56. Since the absorbent element 56 of the secondary absorbent member 50 performs a function different from that of the absorbent core 34, the absorbent element 56 may be somewhat thinner or smaller in volume than the absorbent core 34, This is most preferred.

Since the absorbent element 56 has different conditions from those of the absorbent core 34, it can be formed of different materials. For example, single or multiple plies of paper tissue commonly used in paper towels or toilet paper may be used to form the absorbent element 56. Preferably, absorbent element 56 is formed from about 1 to about 5 plies of paper tissue. From about 24 grams to 48 grams per square meter as prepared by the method disclosed in US Pat. No. 3,301,746, issued January 31, 1967 to Sanford and Sisson, incorporated herein by reference. It has been found that paper tissue comprising at least one ply having a basis weight and an apparent density of about 0.10 grams to 0.12 grams per cubic centimeter is very suitable for use as the absorbent element 56. Wet strength resins and latex binders can be used to provide additional strength to the paper tissue used in the absorbent element, which is preferred. Paper tissue produced by the method disclosed in US Pat. No. 3,994,771, issued November 30, 1976 to Morgan et al., Incorporated herein by reference, may also advantageously be used as absorbent element 56.

Absorbing element 56 may have any suitable shape, such as, but not limited to, oval, hourglass, dog bone, asymmetric, and the like. In the preferred embodiment shown in FIG. 1, the absorbent element 56 has a generally rectangular shape surrounded by a longitudinal side 55 and a lateral edge 57. The absorbent element 56 also has a longitudinal length CL, a transverse width CW and a thickness CT. The longitudinal length CL may be shorter than the longitudinal lengths PL and SL. The length CL may be about 10 cm to about 33 cm, preferably about 15 cm to about 33 cm. The transverse width CW may be wider than the transverse width PW of the main absorbent member 30 at least in the central region 28 (ie the crotch region corresponding to the crotch region of the undergarment when the composite sanitary napkin is used). . More preferably, the transverse width CW may be wider than the transverse width PW of the main absorbent member 30 over its entire length. The width CW may be about 3 cm to 12 cm, preferably about 4 cm to 10 cm, more preferably 5 cm to 8 cm. 10 and 11 illustrate modified shapes of the composite sanitary napkin and the secondary absorbent element. The composite sanitary napkin 90 shown in FIG. 10 has the narrowest portion (ie crotch region) at the center of the longitudinal direction and does not have flaps on both longitudinal sides. The secondary absorbent element 95 of the composite sanitary napkin 90 may have an absorbent element 91 in the form of a patch that is generally located in the crotch region, as shown in FIG. 10. The absorbent element 91 in the form of a patch may have an elliptical shape with the widest portion in the center of the longitudinal direction. The widest portion of the absorbent element 91 preferably matches the narrowest crotch region of the composite sanitary napkin 90. The composite sanitary napkin 92 shown in FIG. 11 has a back flap 94 in addition to the flap 33 located on the crotch region. The subabsorbent element 96 of the composite sanitary napkin 92 shown in FIG. 11 may have an absorbent element 93 in the form having the narrowest region in the crotch region of the composite sanitary napkin 92. The narrowest portion of the absorbent element 93 preferably coincides with the crotch region of the composite sanitary napkin 92. In both embodiments, the transverse width CW is preferably wider than the transverse width PW of the main absorbent member 30 in the crotch region of the composite sanitary napkin. Desirably, the width PW may be less than about 80% of the width CW. More preferably, width PW may be less than about 70% of width CW.

The backsheet 54 is impermeable to fluids (eg, menses and / or urine) and is preferably made of a thin plastic film although other flexible fluid impermeable materials may be used. As used herein, the term "flexible" refers to a material that is flexible and easily adapts to the general shape and contour of the human body. In use, the backsheet 54 is interposed between the absorbent element 56 and the user's underwear. The function of the backsheet 54 is that the effluent released from the main absorbent member 30 or accidentally bypassed the main absorbent member 30 and the effluent absorbed and received by the absorbent element 56 come into contact with the user's underwear and contaminate it. To prevent. The backsheet 54 may thus comprise a woven or nonwoven material, a polymer film such as a thermoplastic film of polyethylene or polypropylene, a composite material such as a film coated nonwoven material. Preferably, the backsheet is a polyethylene film having a thickness of about 0.012 mm (0.5 mil) to about 0.015 mm (2.0 mil). Exemplary polyethylene films are manufactured under the name P18-0410 by Clopay Corporation, Cincinnati, Ohio, and also at Ethyl Corporation, Visqueen division, Terhut, Indiana. By XP-39385. The backsheet is embossed and / or mat finished to provide a more garment-like appearance. The backsheet may also allow gas to escape from the absorbent element 56 (ie, may be breathable) while preventing the effluent from escaping through the backsheet 54.

The shape of the secondary absorbent member 50 can be generally rectangular surrounded by the longitudinal side 21 and the transverse end 22. Other suitable shapes include, but are not limited to, oval, hourglass, dog bone, asymmetric, and the like. The secondary absorbent member 50 can have a flap 33, each flap adjacent to the longitudinal side 21 of the secondary absorbent member 50 in the central region 28 as shown in FIG. 1. Extending laterally therefrom. The flap 33 is structured over the edge of the wearer's panties in the crotch region such that the flap is disposed between the wearer's panties and the wearer's thighs. The flap performs at least two functions. First, the flap 33 preferably helps to prevent contamination of the wearer's body and panties by menstrual fluid by forming a double wall barrier along the edge of the panties. Secondly, the flap 33 can be attached to the garment facing side of the panty by folding it back down the panty with attachment means to be described later on the garment facing surface. In this way, the flap 33 serves to keep the sanitary napkin 20 properly positioned in the panties.

In the preferred embodiment, the flap 33 consists of a topsheet and a backsheet. In addition, the flap 33 is preferably one of the thin layers of the sub absorbent member 50. That is, the top sheet 52 and the back sheet 54 of the sub absorbent member 50 may simply extend laterally outward from the longitudinal side portion 21 to form the flap 33. However, the flap 33 need not be integral with the sub absorbent member 50 and may be a separate element fixed to the sub absorbent member 50. The flap 33 may also be made of a single substrate or other thin layer configuration. However, the flap 33 preferably has a fluid impermeable backsheet to prevent the exudates that reach it from soiling the edges of the wearer's panties.

In addition, the flap 33 preferably includes an absorbing member to at least one point past the edge of the wearer's panties. Theoretically, since a relatively small amount of men reaches the flap 33, a relatively small amount of absorbent material is required for the flap. However, the flap 33 preferably has at least some absorbent material to prevent the effluent reaching it further flowing to the unprotected area. Preferably, the absorbent material in the flap 33 has a relatively large flexibility.

Many sanitary napkins with flaps suitable for use with the secondary absorbent member 50 of a composite sanitary napkin are disclosed in US Pat. No. 4,687,478, issued May 18, 1987 to May Tilburg, May 20, 1986. US Pat. No. 4,589,876 to Rovan Tilberg and US Pat. No. 4,608,047 to Mattingly, issued August 26, 1986. Each of these patents is incorporated herein by reference. Optionally, the secondary absorbent member 50 may include elements that naturally wrap the sides of the wearer's panties. U.S. Patent Nos. 5,584,829 to Rabash et al., Dated Dec. 17, 1996, of which a sanitary napkin having elements that naturally surround the wearer's panties, suitable for use with the subabsorbing member 50 of the composite sanitary napkin 20, and US Patent No. 5,558,663, issued on September 24, 1996 to Wineburger et al. The disclosure of this patent is incorporated herein by reference.

Preferably, the secondary absorbent member 50 is provided with supporting means or attachment means, such as adhesive attachment means 58, 62. Adhesive attachment means 58 provides a means to secure composite sanitary napkin 20 to the crotch portion of a user's underwear or panties. The adhesive attachment means 62 provides a means to secure the flap 33 of the composite sanitary napkin 20 to the garment facing side of the panty so that the flap can be folded back below the panty. Thus, some or all of the outer or garment surface of the backsheet 54 may be coated with an adhesive. In a preferred embodiment, at least a portion of the adhesive may be located on the surface of the backsheet 54 along the longitudinal direction of the secondary absorbent member 50 and also have a linear shape along the longitudinal direction, but not limited thereto. It may be. The adhesive 62 may be located on the garment surface of the backsheet 54 of the flap 33 and may also have a rectangular shape. Adhesives or glues used in the art for this purpose can be used for the adhesives herein, with pressure sensitive adhesives being preferred. Suitable adhesives include Century A-305-IV, manufactured by Century Adhesive Corporation, Columbus, Ohio, and National Starch and Chemical Company, Bridgewater, NJ. Instant Lock 34-2823). Suitable adhesive fasteners are also disclosed in US Pat. No. 4,917,697.

The pressure sensitive adhesive is typically covered with removable release liners 59 and 63 to prevent the adhesive from drying or sticking to surfaces other than the crotch portion of the panty prior to use. Suitable release liners are also disclosed in US Pat. No. 4,917,697, cited above. Any commercially available release liner commonly used for this purpose can be used in the present invention. Examples of suitable release liners include, but are not limited to, BL30MG-A Silox E1 / 0 and BL30MG-A Silox 4P / 0 manufactured by Akrosil Corporation, Menasha, Wisconsin. The composite sanitary napkin 20 is used by removing the release liners 59 and 63 and then installing the sanitary napkin 20 in the panty so that the adhesives 58 and 62 are in contact with the panty. Adhesives 58 and 62 hold the sanitary napkin in place in the panties during use.

The top sheet 52 and back sheet 54 of the secondary absorbing member 50 may be coupled to each other by suitable means. The topsheet 52 may be coupled to the backsheet 54 along the periphery 64 or may be coupled to the backsheet 54 in all areas except the area where the absorbent element 56 is present. In the region where absorbent element 56 is present, topsheet 52 and backsheet 54 may each be coupled to absorbent element 56. Suitable methods include, but are not limited to, pressurization, heating, pressurization and heating, or adhesives such as line adhesives, spiral adhesives or point adhesives. In the preferred embodiment shown in FIG. 1, the topsheet 52 and backsheet 54 may be joined by applying heat along the perimeter 64 of the sanitary napkin 20.

The length SL, the width SW and the thickness ST of the sub absorbent member 50 may have any convenient dimension. The length SL is preferably about 5 cm to 35 cm, more preferably about 10 cm to 35 cm, and most preferably about 20 cm to 35 cm. Preferably, the length SL of the sub absorbent member 50 may be substantially the same as the length PL of the main absorbent member 30. The width SW is preferably about 4 cm to 13 cm, more preferably about 5 cm to 11 cm, most preferably about 6 cm to 9 cm. The secondary absorbing member 50 is preferably relatively thin and flexible. The thickness ST is preferably about 0.1 cm to 2.0 cm, more preferably about 0.1 cm to 1.0 cm, and most preferably about 0.1 cm to 0.4 cm. Preferably, the thickness ST of the sub absorbent member 50 may be smaller than the thickness PT of the main absorbent member 30.

The secondary absorbent member (base member) 50 may optionally be manufactured in the absence of an absorbent element. Since most or all of the body fluid is preferably absorbed by the absorbent core of the main absorbent member 30 and accommodated therein, the base member 50 may be discharged from the main absorbent member 30 or by chance. It is only necessary to prevent the user's clothing from being contaminated by a relatively small amount of fluid that can bypass 30). Thus, because the expected amount of fluid that can contact the base member is relatively small, the base element need not contain the fluid in the base member 50 to prevent the fluid from contaminating the user's clothing.

In order to form the composite sanitary napkin 20, the main absorbent member 30 and the secondary absorbent member 50 are joined by the coupling means indicated by reference numeral 70 in FIGS. 1 to 3, 6 and 7. The coupling means 70 serves to couple the primary absorbent member 30 and the secondary absorbent member 50 into the composite sanitary napkin 20 having a strength sufficient to prevent them from being separated during use. Suitable bonding means can be used, such as adhesive attachment, pressure attachment, thermal attachment or ultrasonic attachment. The primary absorbent member 30 may be fixed to the secondary absorbent member 50 by the coupling means 70 along the entire common length. Alternatively, the primary absorbent member 30 may be fixed to the secondary absorbent member 50 intermittently along a common length.

In the preferred embodiment shown in FIGS. 1-3, 6 and 7, the main absorbing member 30 comprises a coupling means 70 comprising a first coupling means 72 and a second coupling means 74. It can be fixed to the sub absorbent member 50 by.

The first engagement means 72 comprise applying pressure to the overlapping transverse ends 22, 25 at a number of distinct points. By applying pressure to the overlapped transverse ends 22, 25, the top sheet 32 of the main absorbent member 30, the top sheet 52 of the sub-absorbent member 50, and the backsheet 54 overlap with each other. It is fixed to each other at the lateral ends 22, 25. Alternatively, the first coupling means 72 may comprise applying heat to a plurality of points, lines or regions. The task of applying heat is suitable for joining the mullet-layer, but as the layers become thicker, the heat transfer between the layers joining the layers may deteriorate. In the preferred embodiment shown in FIG. 2, the three sides of the topsheet, as the longitudinal side portions 45 of the topsheet 32 of the main absorbent member 30 can overlap each other under the absorbent core 34. Five layers, including 32, one layer of top sheet 52 and one layer of back sheet, are bonded to each other. If the topsheet 32 includes two layers having a molded film 36 and a nonwoven 37, eight layers must be bonded to each other as shown in FIG. As the layers become thicker, it is desirable to join the layers by applying pressure or pressure and heat. Alternatively, the first joining means 72 may comprise adding an adhesive between the layers or adding a combination of pressure, heat and adhesive.

The second coupling means 74 comprises applying an adhesive, such as a spiral adhesive, a line adhesive or a point adhesive, between the primary absorbent member 30 and the secondary absorbent member 50. As shown in Fig. 6, in the preferred embodiment, the spiral adhesive 74 is continuously applied between the main absorbent member 30 and the secondary absorbent member 50 as the second coupling means. If it is desired that the primary absorbent member 30 and the secondary absorbent member 50 be secured to each other along the entire common length, it is preferable to use a spiral adhesive, in which application of the spiral adhesive is intermittent for the absorbent members 30 and 50. This is because it is prevented from being fixed. The main absorbent member 30 and the sub absorbent member 50 are preferably fixed at a width AW narrower than the lateral width PW of the main absorbent member 30. Preferably, the width AW may be less than 70% of the width PW. This allows the main absorbent member 30 to conform to the female body shape and the movement of the female body.

The composite sanitary napkin 20 can include various variations and / or options. The primary absorbent member 30 may include a fluid barrier 35 as shown in FIG. The fluid barrier 35 may be located on the lower half side of the absorbent core 34 to suppress fluid from moving the absorbent core toward the sub absorbent member 50. The fluid barrier 35 tends to receive fluid absorbed in the absorbent core 34 and may be constructed of a material having the same properties as the fluid impermeable back sheet of the secondary absorbent member 50, which will be described later. The fluid barrier 35 may extend along the entire length of the main absorbent member 30 or may extend only in the central region 28 of the main absorbent member 30 or the first end region 27 and the second. May extend in the end region 29.

Alternatively, the topsheet 32 of the primary absorbent member 30 may comprise a sheet having a fluid permeable zone 76 and a fluid impermeable zone 78. If the topsheet 32 comprises a forming plume, the fluid permeable zone may be a perforated zone and the fluid impermeable zone 78 may be a non-perforated zone. As shown in FIG. 9, the fluid permeation zone 76 of the topsheet 32 can be located on the lower half side of the absorbent core 34 to inhibit fluid from moving the absorbent core toward the secondary absorbent member 50. have. Fluid permeation zone 76 may be adapted to receive the absorbed fluid in absorbent core 34.

Compound sanitary napkin 20 may be extensible. The individual elements of the primary absorbent member 30 and the secondary absorbent member 50 may consist of elements that are particularly longitudinally extendable (preferably extensible) when the composite sanitary napkin 20 is worn. Desirably, the composite sanitary napkin 20 may extend longitudinally between about 15% and about 40% of the unextended length. This extensibility improves wear, comfort and reduces contamination in use when the composite sanitary napkin is secured to the wearer's underwear. Preferably, the secondary absorbent member 50 consists of elements that are also laterally extendable when the composite sanitary napkin 20 is worn. Desirably, the composite sanitary napkin 20 can extend laterally between about 15% and about 40% of the unextended length. The topsheet 32 for both the primary absorbent member 30 and the secondary absorbent member 50 is disclosed in US Pat. No. 5,366,782, issued to Curro et al. On November 22, 1994, incorporated herein by reference. It may comprise a three-dimensional fluid permeable elastic polymer web as disclosed in. A particularly preferred extensible backsheet is an extended adhesive film known as Formula # 198-388, manufactured by Findley Adhesive Company of Wawawatosa, Wisconsin, USA. Sanitary napkins with extendable elements are disclosed in US Pat. No. 5,611,790 to Osborne et al. On March 18, 1997 and PCT International Publication No. WO93 / 01786 to Osborne et al. On February 4, 1993. The disclosure of this document is incorporated herein by reference.

The composite sanitary napkin 20 can be adapted to the female body. Since the size and shape are preferably determined such that the main absorbent member 30 is worn near the labia area, the main absorbent member 30 will be at least partially within the labia. As shown in Fig. 10, when the composite sanitary napkin 20 is worn by a woman and supported by underwear, it is preferable that a part of the main absorbent member 30 is worn near the labia area during use. In contrast, one main function of the secondary absorbent member 50 is that the user's clothing is contaminated by absorbed fluid which may be released from the primary absorbent member 30 or may accidentally bypass the primary absorbent member 30. To prevent that. The sub absorbent member 50 is preferably spaced apart from the body so that it does not come into contact with the body. The shape of the primary absorbent member 30 is sized and shaped such that the secondary absorbent member 50 is spaced from the body and ensures a space 80 between the body and the secondary absorbent member 50. This causes the longitudinal side of the sub absorbent member 50 to remain white.

The composite sanitary napkin 20 may absorb body fluids. The total absorbent capacity of the primary absorbent member 30 should correspond to the amount of exudates intended for the composite sanitary napkin 20. In addition, the absorbent capacity of the primary absorbent member 30 can be changed to accommodate the range of the expected exudate amount of the wearer. Typically, from 2 grams to 20 grams of exudative fluid is expected during the normal period of wearing a sanitary napkin. When the composite sanitary napkin 20 is exposed to 2 to 20 grams of fluid loading, the primary absorbent member 30 may absorb 80% of the 2 to 20 grams of fluid in actual wear. In addition, when the composite sanitary napkin 20 is exposed to a fluid loading of 20-30 grams in excess of the usual amount, the main absorbent member 30 may absorb 70% of the 20-30 gram fluid. Since the main absorbent member 30 has the ability to absorb at least 70% of the loaded fluid of 2 to 30 grams when the sanitary napkin is used attached to the female body, the main absorbent member 30 having this capability is used for secondary absorption. The longitudinal side of the member 50 is left white. This gives consumers a visual indication of increasing confidence in the absorbent and leakproof performance of sanitary napkin products.

The primary absorbent member 30 preferably includes a hydrogel-forming polymer to enhance its absorbent capacity. The more the hydrogel-forming polymer contained in the main absorbent member 30, the higher the absorption capability of the main absorbent member 30 is. Since the hydrogel-forming polymer is inflated after the polymer absorbs the fluid, the main absorbent member 30 is expanded in the transverse direction and the thickness direction. Expansion of the primary absorbent member 30 provides greater fit and wearability between the primary absorbent member 30 and the female body. However, too many hydrogel-forming polymers cause problems of gel-blocks and reduce the absorption capacity. More importantly, too much hydrogel-forming polymer makes the primary absorbent member 30 into a straight cylindrical shape that is not easily bent without large bending forces when absorbing fluid. In this case, the main absorbent member 30 does not fit the curvilinear shape of the female body, because the transverse end of the composite sanitary napkin 20 tends to be far from the body. Therefore, an appropriate amount of hydrogel-forming polymer is preferable in view of the absorbency, comfort and suitability of the composite sanitary napkin having the main absorbent member.

It is desirable to provide a composite sanitary napkin having a main absorbent member that varies in width or degree of caliper over its length. For example, the main absorbent member may be relatively thick in the central region as opposed to the end region. Alternatively, the main absorbent member may be relatively thin in the central region as opposed to the end region.

Referring now to FIGS. 13-17, one of the preferred and simple process flows 200 depicting the assembly of the composite sanitary napkin shown in FIG. 4 is shown. As shown in FIG. 13, the process 200 of manufacturing the composite sanitary napkin 20 includes a main absorbent member manufacturing process (main absorbent member manufacturing section) 202 and a secondary absorbent member manufacturing process (sub absorbent member manufacturing section). 204, the steps of the joining process (coupling section) 206 and the cutting process (cutting section) 208 of the primary absorbing member and the secondary absorbing member.

The main absorbent member manufacturing process 202 also includes a topsheet material supply process (supply section) 210, a main absorbent element supply process (provide section) 212, a wrap process (wrap section) 214, and a forward process (forward) Section 216).

In the feed section 210, the molded film web 220 and the nonwoven web 222 are continuously fed from the feed rolls 224, 226 to the topsheet bonding unit 228, respectively, so that the nonwoven web 222 is molded film. Overlaid on web 220. Continuous molded film web 220 and continuous nonwoven web 222 are joined by bonding unit 228 to form continuous topsheet web 230. As shown in FIG. 14, the bonding unit 228 includes a patterned roll 232 and an anvil roll 234. The patterned roll 232 has a series of patterned protrusions 236 on its surface. One or both of the patterned rolls 232 and / or anvil rolls 234 are deflected with each other so that a predetermined pattern-element is loaded into the nip between the rolls 232, 234. As shown in FIG. 14, by supplying the continuous molded film web 220 and the continuous nonwoven web 222 to the nip of the bonding unit 228, the two webs are forced to press the end of the continuous topsheet web 230 by pressing force. Along the directional side 45 are joined at separate points 49 (see FIGS. 5 and 16). The pattern of distinct dots corresponds to the pattern of the protrusion 236 of the roll 232. Bonding between this continuous formed film web 220 and continuous nonwoven web 222 allows the bonded web to move stably. Alternatively, adhesives such as line adhesives, spiral adhesives or point adhesives or ultrasonic bonding or thermal bonding may be used to bond the molded film web 220 and the nonwoven web 222. The continuous topsheet web 230 is then conveyed towards the first adhesive application section 238 where the intermittent spiral adhesive 240 directs the absorbent core of the continuous topsheet web 230, as shown in FIG. 16. It is applied on the side and then provides a separate absorbent core 242 to the continuous topsheet web 230. Alternatively, the adhesive applied to the continuous topsheet web 230 may be replaced by a point adhesive, a spray adhesive, a line adhesive or a known method that can provide good adhesive dimensions in the adhesive width and length direction. Preferably, the adhesive width preferably maintains a narrow dimension relative to the width of the absorbent core 242.

The continuous topsheet web 230 is conveyed to the main absorbent element providing section 212 by changing the direction upwards. The providing section 212 includes a fog chamber 242 and a lay down drum 244 to make a separate absorbent core 242 comprising a hydrogel-forming polymer and fibers. The mixing of the hydrogel-forming polymer and fibers carried from the mist chamber 246 to the laying drum 244 is separated by vacuum means 248 in the laying drum 244 having a predetermined number of discrete pockets on its surface. The shape of the absorbent core 242 is formed. When each of the separate absorbent cores 242 on the laying drum 244 reaches the point of contact with the continuous topsheet web 230, the separate absorbent cores 242 are shown in FIGS. 13 and 16, It is moved from the laying drum 244 onto the surface of the continuous topsheet web 230, which is pre-coated with an intermittent spiral adhesive on the surface of the continuous topsheet web 230. The separate absorbent core 42 is conveyed such that its body facing surface faces the continuous topsheet web 230 and that its subabsorbing member facing side 243 (see FIG. 16) faces upward. This conveying is achieved by the blowing air of the vacuum means 252 and the laying drum 248 in the conveying drum 254 as the continuous topsheet web 230 with the spiral adhesive moves around the surface of the conveying drum 254. . In addition, as the continuous topsheet web 230 moves around the surface of the conveying drum 254, the continuous topsheet web 230 changes its orientation substantially horizontally so that a separate absorbent core 242 is moved by its weight. Easy to stay on the surface of the continuous topsheet web 230. When a separate absorbent core 242 moves on the continuous topsheet web 230, a first spacing S is provided between the preceding separate absorbent core 242 and the subsequent separate absorbent core 242. A separate absorbent core 242 secured to and carried by the continuous topsheet web 230 then passes through a calender roll 260 having a fixed gap. The separate absorbent core 242 is compressed into a uniform caliper by the calender roll 260 prior to the wrapping process 214.

Alternatively, the continuous topsheet web 230 may be transferred to a point between the calender roll 260 and the second adhesive application section 262 after the adhesive has been applied in the first adhesive application section 238. In this case, the continuous topsheet web 230 may not pass through the primary absorbent element providing section 212. A separate absorbent core 242 advances toward the calender roll 260 and then meets and carries with the continuous topsheet web 230 at a point after the calender roll 260.

The mist chamber 246 can supply only the fibers onto the laying drum 244 to produce a separate absorbent core 242 that includes only the fibers. Alternatively, if desired, after the primary absorbent element providing section 212, the hydrogel-forming polymer may be added to a separate absorbent core 242 comprising only fibers. The hydrogel-forming polymer may be added before the wrapping process 214 (eg, before the folding section 264).

After the separate absorbent core 242 is compressed, the continuous topsheet web 230 with the separate absorbent core 24 is conveyed towards the second adhesive application section 262 in the wrapping process. In the second adhesive application section 262, a continuous line adhesive 51 (see FIGS. 4, 5 and 16) is applied on one of the longitudinal sides 45 of the continuous topsheet web 230. Continuous topsheet web 230 is then transferred to a conventional folding section 264. In the folding section 264, the longitudinal side 45 of the continuous topsheet web 230 is folded upward onto the base member facing side of the separate absorbent core 242 so that each longitudinal side 45 overlaps each other. All. As a result, the continuous topsheet web 230 surrounds a separate absorbent core 242. At the exit of the folding section 264, the continuous line adhesive 51 is folded into a continuous topsheet web (folded by attaching both longitudinal sides 45 of the continuous topsheet web 230 so that a separate core 24 is inward). 230 forms and maintains a permanent attachment and also forms a continuous primary absorbent member web 266 as shown in FIG. Permanent attachment preferably maintains dimensions in the process while the continuous main absorber web 266 is moved downstream. Alternatively, known attachment methods may be used, such as point adhesives, spray adhesives or spiral adhesives.

Continuous main absorber web 266 is then conveyed downstream, ie, forward section, by horizontal drive conveyor 216. These drive conveyors 216 may be replaced with vacuum drive conveyors or dead plates as long as the tube web deformation remains stable. If the distance between the wrap section 214 and the joining section 206 is short, the advance section 216 may not be necessary. In this case, the wrap section 214 may include a advance section that advances the continuous primary absorbent web 266 to the joining section 206.

The sub absorbent member (base member) manufacturing process 204 may also include a sub absorbent member material supply process (material supply section) 270 and a joining process (bonding section) 272.

In the material feed section 270, the topsheet web 274, the sub absorbent element web 276 and the backsheet web 278 are continuously fed from the feed rolls 280, 282, 284 to the bonding section 272, respectively. do. Continuous backsheet web 278 is transferred to third adhesive application section 286 where an intermittent line adhesive is applied on the secondary absorbent element directing side of continuous backsheet web 278 and thereafter with secondary absorbent element 276. A continuous backsheet web 278 is provided. Alternatively, the adhesive applied to the continuous backsheet web 278 may be replaced by point adhesives, spray adhesives, spiral adhesives or other known methods. As described above, in one of the preferred embodiments, subabsorbent element 276 may be a tissue layer. In the preferred embodiment of FIG. 13, subabsorbent element 276 may be prepared from a rolled continuous web. Alternatively, subabsorbent element 276 may be supplied as a separate absorbent element. As shown in FIG. 13, secondary absorbent element 276 is conveyed to a conventional cutting and spacing section 290. In the cutting and spacing sections, the subabsorbent web 276 is cut into a separate subabsorbent element 290 and has a second spacing between the preceding separate subabsorbent element 290 and the subsequent separate subabsorbent element 288. T) (see FIG. 16). A separate secondary absorbent element 288 is then placed on the continuous backsheet web 278 and secured to the continuous backsheet web 278 by applied line adhesive. A separate subabsorbent element 288 is then interposed between the continuous topsheet web 274 and the continuous backsheet web 278 to form a continuous laminate web 292 comprising the continuous topsheet web 274. Preferably, before the separate subabsorbing elements 288 are interposed between the continuous topsheet web 274 and the continuous backsheet web 278, the continuous topsheet web 274 is a line adhesive, a point adhesive, a spray adhesive. Or an adhesive such as a spiral adhesive may be applied.

After forming the continuous laminate web 292, it is passed through the bonding section 272. Bonding section 272 forms a permanent bond between continuous topsheet web 274 and continuous backsheet web 278 to form continuous secondary absorbent member web 293. Here, the bonding process may use a known method such as thermal bonding 291 by applying heat along the periphery of the sub-absorbing member 50 as shown in FIG. Alternatively, the method may comprise a pressing step. In addition, an adhesive may be applied to the continuous topsheet web 274 and / or the continuous backsheet web 293 as a bonding means. The continuous secondary absorbent web 293 is then conveyed downstream by, for example, a vacuum driven conveyor. As shown in Fig. 13, since the continuous main absorbent member web 266 has its sub absorbent member facing side generally facing upwards, the continuous minor absorbent member web 293 is in the machine direction carrying the web 266. Forward from the top toward the continuous primary absorbent member web 266. As a result, the continuous sub absorbent member web 293 covers the attached longitudinal side 45 of the continuous main absorbent web 266.

After the bonding section, the release liners 59 and 63 shown in FIG. 4 may be attached onto the continuous backsheet web 278 of the secondary absorbent member web 293. Release liners 59 and 63 have adhesive such as line adhesive on the surface facing continuous backsheet web 278. The adhesive remains on the backsheet when the release liners 59 and 63 have been removed for use.

The bonding process 206 may also include an adhesive application process (adhesive application section) 294 and a pressurization process (pressurization section) 296.

In the adhesive application process 294, the continuous spiral adhesive 74 is moved by the fourth adhesive application section 294 while the continuous main absorber web 266 is transported by the upwardly inclined drive vacuum conveyor 295. It is applied onto the continuous primary absorbent member web 266. Alternatively, known methods such as line adhesives, point adhesives or spray adhesives can be used. Preferably, a spiral adhesive is applied to interpose between the continuous primary absorbent web 266 and the continuous secondary absorbent web 293. Preferably, the width of the helical adhesive 74 does not extend beyond the width PW of the continuous primary absorbent web 266. Alternatively, adhesive 74 may be applied to the bottom of the continuous secondary absorbent member web 293 (ie, top sheet side).

Continuous primary absorbent web 266 and continuous secondary absorbent web 293 are then advanced toward nip roll 298, where both webs 266 and 293 in nip roll 298 are applied to spiral adhesive 74. Are bonded together to form a continuous composite sanitary napkin web 300. When the webs 266, 293 meet each other on the nip roll 298, at least one of the first spacing S of the separate main absorbent core 242 and the second spacing T of the separate main absorbent element 288. Some are arranged to overlap one another as shown in FIG. 16. By arranging the overlapped portion X, the continuous composite sanitary napkin web 300 has an area where the absorbent element is present so as not to provide the transverse end 18 in the composite sanitary napkin 20.

The continuous composite sanitary napkin web 300 is then conveyed towards the pressing section 296 as shown in FIG. 13. The pressing section 296 applies pressure to the overlapping portions X along the transverse direction at the separated points 72, so that the continuous primary absorbent web 266 and the continuous secondary absorbent web 293 are engaged. As shown in FIG. 15, the pressing section 296 has a patterned roll 302 and an anvil roll 304. The patterned roll 302 has a series of patterned protrusions 306 on its surface. Either or both of the patterned roll 302 and / or the anvil roll 304 are deflected toward each other and a predetermined pattern-element is loaded into the nip between the rolls 302, 304. By feeding the continuous composite sanitary napkin web 300 to the nip of the pressurizing section 296, the two webs 266, 296 are pressurized at separate points 72 to join. The pattern of distinct dots 72 corresponds to the pattern of the protrusion 306 of the roll 302. This engagement at the transverse end 18 (ie, overlapping portion X) preferably has sufficient peel strength (nonwoven surface 222 to nonwoven surface 222). Preferably, this peel strength is preferably at least 100 grams per inch. This can be achieved by the operation of 1) at least 60,000 psi pressure per nip area, 2) surface temperature of 70 ° C. to 90 ° C., and 3) interference of two rolls of 0.05 mm to 0.08 mm. The speed of the continuous composite sanitary napkin web 300 is preferably controlled to 100m / min to 155m / min or more. Optionally, the roll surface speeds of the patterned roll 302 and the anvil roll 304 may be different from each other. In addition, the roll surface speed of the patterned roll 302 and the anvil roll 304 may be slightly faster (eg, 0% to 3%) than the speed of the continuous composite sanitary napkin web 300. Optionally, as shown in FIG. 16, an adhesive 241 may be applied to the first spacing S to enhance the peel strength between the nonwoven 222 and the nonwoven 222 surface 222. This adhesive may be applied at the same point as the second adhesive application section 262 before the continuous topsheet web 230 is folded. Since both the continuous primary absorbent member web 266 and the continuous secondary absorbent member web 293 are arranged to have the same deformation by continuously advancing before being joined, the composite sanitary napkin does not bend even after being cut into separate sanitary napkins. Alternatively, if desired, the webs 266 and 293 can be bent by having different deformations from each other.

The cutting process 208 can include a cutter 302. The continuous compound sanitary napkin web 300 is advanced to the cutter 302 and cut into separate segments (ie separate compound sanitary napkins) having a final shape. The cutter 302 may be a conventional cutter with a die cutter. Alternatively, any other cutting method can be used.

Many alternative methods for the process can be used. The bonding process 272 may be performed after the bonding process 206 and before the cutting process 208. In this case, the topsheet web 274, subabsorbent element 288 and backsheet web 278 may be temporarily bonded by suitable means, such as adhesive, prior to the bonding process 206. A separate sub absorbent member 288 may be provided on the topsheet web 274 instead of on the backsheet web 278.

With reference to FIGS. 18-20, another preferred and simple process illustrating assembly of the composite sanitary napkin 20 is shown. As shown in Fig. 18, the process 400 of manufacturing the composite sanitary napkin 20 includes the main absorbent member manufacturing process (main absorbent member manufacturing section) 202, the secondary absorbent member material supply process (sub absorbent supply section) ( 402, joining process (bonding section) 404 and cutting process (cutting section) 208. The main absorbent member manufacturing process 202 includes a top sheet material supply process (supply section) 210, a main absorbent element supply process (provide section) 212, a wrap process (wrap section) 214, and a forward process (forward section). 216, which may be substantially the same as the process shown in FIG. 13. Since the functions of these processes may be the same as the corresponding processes described above, the detailed description may refer to the above contents. The bonding section 404 may include an adhesive application process (adhesive application section) 294 and a pressurization process (pressurization section) 406.

In the subabsorption supply process 402, the continuous backsheet web 278 is fed from the feed roll 284 and then intermittent line adhesive is applied in the third adhesive application section 286. Continuous subabsorbent web 276 is fed from feed roll 282 and then cut into separate subabsorbent elements 288 by cutting and spacing sections 290. A separate sub absorbent element 288 is provided on the continuous backsheet web 278 at a second spacing T and secured thereon by a line adhesive. Continuous topsheet web 274 is fed from feed roll 280. The continuous backsheet web 278 having the subsidiary absorbent element 288 separate from the continuous topsheet web 274 is then advanced separately into the joining section 404 as shown in FIG. 18. On the other hand, the main absorbent web 266 is also advanced towards the bonding section 404 after the spiral adhesive 74 has been applied by the fourth adhesive application section 294. Continuous topsheet web 274, continuous backsheet web 288 with separate subabsorbing elements 288, and continuous absorbent web 266 meet at press section 406. As shown in FIG. 19, at least a portion of the first spacing S and the second spacing T are arranged to overlap each other in the pressing section 406.

All continuous webs 274, 278, 266 can be joined by applying pressure to separate points 72 in the overlapping portion X along the transverse direction. In addition, the continuous topsheet web 274 and the continuous backsheet web 278 may be joined in the pressing section 406 to form the continuous composite sanitary napkin web 300. In this case, the pressing section 406 may include applying heat along the periphery of the sub absorbent member 50 to form thermal bonding. Alternatively, the periphery of the sub absorbent member 50 can be joined by applying pressure only by the pressing section 406. The continuous composite sanitary napkin web 300 may then be advanced to the cutting process 208 and cut into separate segments having a final shape (ie, separate composite sanitary napkins 20).

With reference to FIGS. 21-23, another preferred and simple process flow 500 showing assembly of the composite sanitary napkin 20 is shown. As shown in FIG. 21, the composite sanitary napkin manufacturing process 500 includes a main absorbent member manufacturing process (main absorbent member manufacturing section) 202, a first base member supplying process (first base member supplying section 502, a combination). The steps of the process (bonding section) 504, the first base member supplying process (first base member supplying section) 506, the joining process (bonding section) 508, and the cutting process (cutting section) 208. The main absorbent member manufacturing process 202 includes a top sheet material supply process (supply section) 210, a main absorbent element supply process (provide section) 212, a wrap process (wrap section) 214, and advancement. 13 and 18, such as the process (advanced section) 216. These processes may be generally the same as those shown in Figs. 13 and 18. Since the functions of these processes may be the same as the corresponding processes described above, the detailed description is provided above. The bonding section 504 is formed by an adhesive application process (adhesive application section) 294. A pressurization process (pressurization section) 506.

In the first base member supply process 502, a continuous topsheet web 274 as a base member is supplied from the supply roll 280 and then intermittent line adhesive is applied in the fifth adhesive application section 510. Continuous subabsorbent web 276 is fed from feed roll 282 to a cut and spaced section 290 which can then use the same equipment as used in the cut and spaced section 290 of FIGS. 13 and 18. By means of a separate subabsorbing element 288. A separate sub absorbent element 288 is provided on the continuous topsheet web 274 at a second spacing T and secured thereon by a line adhesive. Continuous topsheet web 274 having a separate subabsorbing element 288 is then advanced to pressing section 506 as shown in FIG. 21. On the other hand, the main absorbent web 266 is also advanced toward the pressing section 506 after the spiral adhesive 74 has been applied by the fourth adhesive application section 294. Continuous topsheet web 274 with separate subabsorbing elements 288 and continuous absorbent web 266 meet at bonding section 506. As shown in FIG. 22, at least a portion of the first spacing S and the second spacing T are arranged to overlap each other in the pressing section 506. The continuous webs 274, 266 may be joined by applying pressure to separate points 72 in the overlapped portion X along the transverse direction to form the continuous composite web 510. Thereafter, the composite web 510 is advanced to the bonding section 508. Continuous backsheet web 278 is fed from feed roll 284 and then conveyed to bond section 508.

After the pressing section 506, the continuous topsheet web 274 and the continuous backsheet web 278 of the continuous composite web 510 may be joined in the bonding section 508 to form the continuous composite sanitary napkin web 512. . Bonding section 508 may include applying heat along the periphery of subabsorbent member 50 to form thermal bonding 291. Alternatively, the periphery of subabsorbent member 50 may be joined by bonding section 508 by only applying pressure, or by applying pressure and heat. The continuous composite sanitary napkin 512 may then be advanced to the cutting process 208 and cut into separate segments having a final shape (ie, separate composite sanitary napkins 20).

While specific embodiments of the invention have been shown and described, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Accordingly, the appended claims are intended to embrace all such alterations and modifications as fall within the scope of the invention.

Claims (20)

A method of manufacturing a composite sanitary napkin comprising a primary absorbent member and a secondary absorbent member, wherein the primary absorbent member includes a primary absorbent element and a fluid permeable cover superimposed on the primary absorbent element, wherein the secondary absorbent member is fluid permeable body directed. A sheet comprising: a sheet, a fluid impermeable garment oriented sheet bonded to the fluid permeable body oriented sheet, and a subabsorbing element positioned between the fluid permeable body oriented sheet and the fluid impermeable garment oriented sheet. (a) forming a continuous primary absorbent member web surrounding a separate primary absorbent element arranged to provide a first predetermined spacing to the continuous fluid permeable cover web; (b) advancing the continuous primary absorbent member web toward the engaging section; (c) supplying a continuous fluid permeable body directing sheet web, a continuous fluid impermeable garment directing sheet web and a separate sub absorbent element towards the joining section, wherein the separate sub absorbent element is arranged to provide a second spacing. The separate sub absorbent element overlaps the separate main absorbent element and at least a portion of the first predetermined interval and the second predetermined interval overlap; (d) combining the continuous primary absorbent member web and the continuous fluid permeable body oriented sheet web to form a continuous composite web; (e) cutting the continuous composite web into a separate composite sanitary napkin Method of making composite sanitary napkins. The method of claim 1, The wrapping includes applying an adhesive along at least one of the longitudinal sides of the continuous fluid permeable cover web and folding each longitudinal side such that the continuous fluid permeable cover web surrounds the separate primary absorbent element. And attaching the longitudinal sides to each other with an adhesive. Method of making composite sanitary napkins. The method of claim 1, Bonding the continuous fluid permeable body directing sheet web and the continuous fluid impermeable garment directing sheet web to intervene therebetween the separate subabsorbing elements. Method of making composite sanitary napkins. The method of claim 3, wherein The bonding step includes applying at least heat to the continuous fluid permeable body oriented sheet web and the continuous fluid impermeable garment oriented sheet web along at least a periphery of the subabsorbent element shape. Method of making composite sanitary napkins. The method of claim 3, wherein The bonding step includes applying at least an adhesive between the continuous fluid permeable body oriented sheet web and the continuous fluid impermeable garment oriented sheet web. Method of making composite sanitary napkins. The method of claim 1, Said supplying step comprises joining said continuous fluid permeable body oriented sheet web and said continuous fluid impermeable garment oriented sheet web with an intervening said separate subabsorbing element therebetween. Method of making composite sanitary napkins. The method of claim 1, The joining step includes applying at least pressure to an overlapping portion of each of the first and second predetermined intervals. Method of making composite sanitary napkins. The method of claim 7, wherein The bonding step further includes applying at least an adhesive between the continuous primary absorbent web and the continuous secondary absorbent web before applying pressure. Method of making composite sanitary napkins. The method of claim 7, wherein The additional step further comprises the step of applying heat. Method of making composite sanitary napkins. The method of claim 1, The bonding step includes bonding the continuous fluid permeable body oriented sheet web and the continuous fluid impermeable garment oriented sheet web to intervene therebetween the separate secondary absorbent elements, and further comprising the first and second predetermined Applying at least pressure to the overlapping portions of the gaps; Method of making composite sanitary napkins. A method of manufacturing a composite sanitary napkin comprising a primary absorbent member and a secondary absorbent member, wherein the primary absorbent member includes a primary absorbent element and a fluid permeable cover superimposed on the primary absorbent element, wherein the secondary absorbent member is fluid permeable body directed. A sheet comprising: a sheet, a fluid impermeable garment oriented sheet bonded to the fluid permeable body oriented sheet, and a subabsorbing element positioned between the fluid permeable body oriented sheet and the fluid impermeable garment oriented sheet. (a) forming a continuous primary absorbent member web surrounding a separate primary absorbent element arranged to provide a first predetermined spacing to the continuous fluid permeable cover web; (b) advancing the continuous primary absorbent member web toward the engaging section; (c) feeding the continuous fluid permeable body directing sheet web towards the bonding section; (d) combining the continuous primary absorbent member web and the continuous fluid permeable body oriented sheet web to form a continuous composite web; (e) forming a continuous composite sanitary napkin web sandwiching a separate secondary absorbent element between the continuous composite web and the continuous fluid impermeable garment directing sheet web, wherein the separate secondary absorbent elements are arranged to provide a second predetermined spacing. Wherein the separate sub absorbent element overlaps the separate main absorbent element and at least a portion of the first predetermined interval and the second predetermined interval overlap; (F) cutting the continuous composite sanitary napkin web with a separate composite sanitary napkin Method of making composite sanitary napkins. The method of claim 11, The wrapping may include applying an adhesive along at least one of the longitudinal sides of the continuous fluid permeable cover web before wrapping the separate main absorbent element, wherein the continuous fluid permeable cover web is applied to the separate main absorbent element. Folding each of the longitudinal sides to enclose the, and attaching the longitudinal sides to each other with an adhesive; Method of making composite sanitary napkins. The method of claim 11, Said supplying step comprises providing said separate secondary absorbent element to said continuous fluid impermeable garment directing sheet web. Method of making composite sanitary napkins. The method of claim 11, The intervening step includes providing the separate secondary absorbent element to the continuous fluid impermeable garment directing sheet web. Method of making composite sanitary napkins. The method of claim 11, The joining step includes applying at least pressure to an overlapping portion of each of the first and second predetermined intervals. Method of making composite sanitary napkins. The method of claim 15, The intervening step includes bonding the continuous fluid permeable body oriented sheet web and the continuous fluid impermeable garment oriented sheet web. Method of making composite sanitary napkins. The method of claim 16, The bonding step includes applying at least heat to the continuous fluid permeable body directing sheet web and the continuous fluid impermeable garment directing sheet web along at least a periphery of the subabsorbent member shape. Method of making composite sanitary napkins. The method of claim 11, The bonding step includes applying at least an adhesive between the continuous secondary absorbent member web and the continuous secondary absorbent member web. Method of making composite sanitary napkins. The method of claim 18, The joining step also includes applying at least pressure to an overlapping portion of each of the first and second predetermined intervals. Method of making composite sanitary napkins. The method of claim 19, The intervening step includes applying at least heat to the continuous fluid permeable body oriented sheet web and the continuous fluid impermeable garment oriented sheet web along at least the periphery of the secondary absorbent member shape. Method of making composite sanitary napkins.