CN1247734A

CN1247734A - Physiological napkin

Info

Publication number: CN1247734A
Application number: CN 99118837
Authority: CN
Inventors: 水谷聪
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 1998-09-11
Filing date: 1999-09-10
Publication date: 2000-03-22
Also published as: JP2000091929A

Abstract

A sanitary napkin 1 includes means 7 adapted to deform an absorbent core 4 convexly upward. The means 7 is elastically stretchable and contractible transversely of the napkin 1 and unobstructed stretch/contraction of the means 7 can be assured by providing the napkin 1 only along its transversely middle region with means 19 used to fasten the napkin to an undergarment.

Description

Physiological napkin

The present invention relates to a kind of sanitary towel that absorbs and keep menses.

The disclosed sanitary towel of Japanese kokai publication hei 6-502336 communique, its dual-side marginal zone alar part has sheet material behind sheet material on the liquid permeability, the opaque liquid, absorbs the structure of sowing discord of core and liquid permeability.Sow discord structure and make sheet material, increased and the contacting of wearer's body, so in case sanitary towel during by wearer's thigh compression, more smooth at least a portion of sowing discord structure middle and upper part branch is out of shape and is become the epirelief shape away from absorbing core.

Aforementioned known sanitary towel is folded in alar part the lower surface in the crotch zone territory that wears medicated underpants, and utilizes the bonding region of alar part to be fixed on the lower surface in its crotch zone territory.This sanitary towel and when compressing these both sides of the edge by wearer's thigh, initially sows discord the structure epirelief under the stationary state of both sides of the edge.Medicated underpants falls a little, when huckle compression stress difficulty works, because the structure of sowing discord of this sanitary towel no longer protrudes, can not make sheet material and health be in good contact condition wearing.

For this reason, even the object of the present invention is to provide that a kind of compression stress of huckle is inoperative, sanitary towel also can be convex, the sanitary towel of acquisition and the good contact condition of wearer's body.

For achieving the above object, prerequisite of the present invention is, a kind of by liquid permeability surficial sheets, opaque liquid bottom surface sheet material and the physiological napkin that constitutes between the absorbency core between the two, having the width middle part that makes described core protrudes deformed configurations and removably is fixed to the fixed structure that wears on the medicated underpants towards the surficial sheets direction from described bottom surface sheet material.

Feature of the present invention is as described below.Described distressed structure is section configuration parts in the form of a ring that make described napkin width direction, there is in the lower surface of the upper surface of the lower surface that makes described core, described bottom surface sheet material and described bottom surface sheet material any be bonded on described core width middle part and comprises elastomeric material that the big I elasticity of ring of extending along the core width that makes described endless member changes, described fixed structure is along the centrage of the described core width of 2 five equilibriums, lower surface in described sanitary towel extends, and has the width that is equivalent to described core width 5-50%.

In a preferred embodiment of the present invention, 2 non-retractility lamellar parts that described distressed structure is identical by width, overlap, and constitute at the elastic extension parts that extend into elongation state along the core width between the sheet component and be fixed on these sheet component both sides of the edge.

In another preferred embodiment, described distressed structure is to be circular elastic extension sheet material along described core width in the form of a ring.

In another preferred embodiment, described sanitary towel is by described fixed structure, engages with the upper surface of profile the 2nd sanitary towel bigger than described sanitary towel.

Brief description

Fig. 1 is that perspective view cuts open in the office of sanitary towel,

Fig. 2 is the cutaway view along II-II line among Fig. 1,

Fig. 3 is the cutaway view along III-III line among Fig. 1,

Fig. 4 is elastomeric element view identical with Fig. 2 when being in contraction state,

Fig. 5 is the view that an embodiment is shown,

Fig. 6 is the view that another embodiment is shown,

Fig. 7 illustrates the view of sanitary towel's user mode.

Below, with reference to accompanying drawing, explain sanitary towel of the present invention.

Fig. 1,2,3 be respectively sanitary towel 1 the office cut open perspective view, along the cutaway view of its II-II line and III-III line.Sanitary towel 1 is made of the distressed structure 7 that has the main part 6 that liquid permeability surficial sheets 2, opaque liquid bottom surface sheet material 3 and absorbency core 4 constitute and be installed on the main part 6.

Main part 6 is an elongate member, has the centrage II-II of 2 length such as branch such as grade, the centrage III-III of partial widths such as 2.Surface, bottom

surface sheet material

2,3 stretch out, overlap and be bonded with each other from the periphery of core 4.The upper surface of the both sides of the edge of main part 6 forms the circular-arc a pair of compressor bar ditch 8 that protrudes towards centrage III-III.

Distressed structure 7 is by the non-retractility upper sheet 11, the bottom sheet material 12 that overlap and be positioned between two

sheet materials

11,12 and constitute towards the multi-ribbon shape elastomeric element 13 that the width of main part 6 extends.Top and the

bottom

11,12 are melted engagement means 14 such as bonding agent and are bonded with each other with lateral edges by heat.Elastomeric element 13 is under the state that the width along main part 6 extends, by engagement means 14, with the lateral edges joint of sheet material 11,12.The lower surface engages that upper sheet 11 is melted bonding agent class bonding agent 17 and bottom surface sheet material 3 by the heat of its upper surface coating.The lower surface of bottom sheet material 12 is protected (referring to Fig. 2) along the bonding agent 19 of centrage III-III coating by peeling paper 21 coverings.Sanitary towel 1 can be fixed to the crotch zone territory that wears medicated underpants 22 (referring to Fig. 4) by bonding agent 19 as peeling peeling paper 21.

On compressor bar ditch 8, surficial sheets 2 and core 4 become one

sheet material

2,3 and core 4 towards 3 compressions of bottom surface sheet material, and core 4 presents the density higher than the neighboring area of bar ditch 11.

Fig. 4 is the cutaway view along the sanitary towel 1 of centrage II-II, and this sanitary towel 1 is fixed to wearing on the medicated underpants 22 shown in the imaginary line, and the elastomeric element 13 of sanitary towel 1 is in contraction state.When the elastomeric element 13 that is in elongation state among Fig. 2 shrank as shown in Figure 4, distressed structure 7 made upper sheet 11 distortion become the epirelief shape, and sheet material 12 distortion in bottom are protruding down, in the form of a ring.Along with the distortion of upper sheet 11, core 4 mainly is out of shape between

compressor bar ditch

8 and 8 and becomes the epirelief shape, and is by surficial sheets 2, closely connected well around the wearer's of sanitary towel vaginal orifice.Sanitary towel 1 as shown bears the body that comes from the top and presses, and elastomeric element 13 elongations become even shape shown in Figure 2.Because distressed structure 7 just wears on the medicated underpants 22 being fixed near the centrage III-III, elastomeric element 13 flexible can not hinder fixing to medicated underpants 22.

So in the 50-100% of the width of core 4 scope, and the length of centrage III-III direction is the 10-80% of core 4 length to the upper and lower

part sheet material

11,12 in the distressed structure 7 of effect at the width of centrage II-II direction.The coating scope of bonding agent 19 is to be formed centrally in being with centrage III-III, and the width on centrage II-II direction is the 10-50% of core 4 width, can not engage with medicated underpants 22 near with it at the lateral edges of bottom sheet material 12.In addition, the rigidity of top and the

bottom sheet material

11,12 each comfortable napkin width direction preferably is same as the rigidity of core 4 or than the rigidity height of core 4.But flexible along centrage III-III for making top and the

bottom sheet material

11,12, it is low to make centrage III-III and near its position become rigidity especially.

Fig. 5 illustrates the view identical with Fig. 4 of one embodiment of the invention.In the sanitary towel 1, the distressed structure 7 of Fig. 4 is between core 4 and bottom surface sheet material 3, and core 4 and bottom surface sheet material 3 engage by bonding agent 17 respectively.Along centrage III-III coating adhesive 19, sanitary towel 1 adheres on the inner surface that wears medicated underpants 22 by this bonding agent 19 at the lower surface of bottom surface sheet material 3.Sanitary towel 1 is because of the contraction of elastomeric element 13, makes surficial sheets 2, core 4 and upper sheet 11 distortion become the epirelief shape, and bottom surface sheet material 3 and bottom sheet material 12 times are protruding.The coating scope of bonding agent 19 is identical with Fig. 4's.

Fig. 6 illustrates the view identical with Fig. 4 of another embodiment of the present invention.But, in this sanitary towel 1, adopted the distressed structure different 7 with Fig. 4, on sanitary towel's main body 6, do not form compressor bar ditch 8.Distressed structure 7 is made by elastic sheet materials such as rubber or elastomers, is the section parts 26 in the form of a ring at sanitary towel's 1 width.These parts 26 are 1 longitudinal extension along centrage III-III towards sanitary towel; thereby; by bonding agent 17; centrage III-III and near join on the lower surface of bottom surface sheet material 3; coating adhesive 19 on the radially opposition side position of this junction, bonding agent 19 are covered by peeling paper 21 and are protected.In a single day sanitary towel 1 bears the body that comes from the top and presses, and just pushes endless member 26, and strain becomes the flat shown in the imaginary line.

Fig. 7 illustrates the view that Fig. 1 sanitary towel 1 is in user mode one example.Sanitary towel 1 shown in the cutaway view is positioned at the width middle part that split with it and width are wanted wide the 2nd sanitary towel 30.The 2nd sanitary towel 30 is made of liquid permeability surficial sheets 32, opaque liquid bottom surface sheet material 33 and the absorbency core between this two

sheet material

32,33 34, and sanitary towel 1 adheres on the upper surface of surficial sheets 32 by bonding agent 19.In sanitary towel 1, can follow distressed structure 7 actions better for making core 4, must make core 4 thinner.At this moment, because of core 4 is thin, just there is the few problem of body fluid absorbtivity, but, eliminated the problems referred to above, simultaneously, can further improve sanitary towel's 1 closely connected performance around vaginal orifice by using the sanitary towel 1 of illustrated example.

The present invention can replace many elastomeric elements 13 to realize with 1 elastomeric element 13.In addition, elastomeric element 13 also can be the 1 slice elastic sheet material onesize with upper and lower part sheet material 11,12.The starting point of compressor bar ditch 8 except the time, also have along surficial sheets 2, flow into the menses of horizontal mobility to prevent the effect of menses crossing current as sanitary towel 1 protuberance.And bar ditch 8 can be by curvilinear ditch in the replacement illustrated example of linearity.In addition, save bar ditch 8 and also can implement the present invention.

Among the present invention, when parts are engaged with each other, melt the bonding agent class bonding agent except using heat, also available heat or ultrasonic fusing corresponding component.

In sanitary towel of the present invention, adopt the strain means, make the absorbency core be deformed into convex, sanitary towel wears on the medicated underpants because of only being fixed at the width middle part, can not hinder core so to be out of shape, even without the pressure effect of the such huckle of conventional art, sanitary towel also can be closely connected well around vaginal orifice.

Claims

1. physiological napkin, have by liquid permeability surficial sheets and opaque liquid bottom surface sheet material and the absorbency core between this two sheet material and constitute and make the width middle part of described core protrude the distressed structure of distortion towards the surficial sheets direction from described bottom surface sheet material, with be detachably fixed to the fixed structure that wears on the medicated underpants, it is characterized in that:

Described distressed structure is section parts in the form of a ring that make the width of described sanitary towel, have that any is bonded on the width middle part of described core in the lower surface of the upper surface of the lower surface that makes described core, described bottom surface sheet material and described bottom surface sheet material, but and comprise the elastomeric material that the ring-type diameter elasticity of extending along the core width of described endless member changes

Described fixed structure extends and has a width that is equivalent to described core width 5～50% at the lower surface of described sanitary towel along the centrage of the described core width of 2 five equilibriums.

2. according to the described sanitary towel of claim 1, it is characterized in that: described distressed structure and 2 slice non-retractility lamellar parts overlapping identical by width, but and extend into elongation state and the elastic extension parts that are fixed on the both sides of the edge of this two sheet component constitute in broad ways between this two sheet component.

3. according to the described sanitary towel of claim 1, it is characterized in that: described distressed structure be in the form of a ring be circular elastic extension sheet material along described core width.

4. according to the arbitrary described sanitary towel of claim 1-3, it is characterized in that: described sanitary towel is bonded on the upper surface of profile the 2nd sanitary towel bigger than described sanitary towel by described fixed structure.