CN100528113C - A method and device of strenghten a fibrous body for absorbent articles - Google Patents
A method and device of strenghten a fibrous body for absorbent articles Download PDFInfo
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- CN100528113C CN100528113C CNB2004800350391A CN200480035039A CN100528113C CN 100528113 C CN100528113 C CN 100528113C CN B2004800350391 A CNB2004800350391 A CN B2004800350391A CN 200480035039 A CN200480035039 A CN 200480035039A CN 100528113 C CN100528113 C CN 100528113C
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
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- Absorbent Articles And Supports Therefor (AREA)
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Abstract
The present invention relates to a method of strengthen a boundary region between a first portion (5) and a second portion (2) of a fibrous body (6) for absorbent articles. According to the invention said boundary region is provided with a pattern of compressed spots (18), the amount of compression being gradually increased in a direction leading away from an edge of said first portion (5) of said fibrous body (6). The invention also relates to an apparatus for performing said method and an absorbent body having a strengthened boundry region.
Description
Technical field
The present invention relates to be used to strengthen the first of absorbent article (such as disposable diaper, pant diaper, sanitary towel, incontinence shield or the like) corpus fibrosum and the method and apparatus of the borderline region between the second portion.The invention still further relates to enhanced in this way corpus fibrosum.
Background technology
The absorber of absorbent article (such as disposable diaper, pant diaper, sanitary towel, incontinence shield or the like) is generally by transmitting corpus fibrosum and after this making by allowing corpus fibrosum through the roll gap between a pair of roller it be compressed on the moving belt.By the roll gap between the adjusting roller, thereby the corpus fibrosum that can obtain desired density brings enough mechanical strengths and suitable capillarity to it.If corpus fibrosum has the different part of basic weight, such as in the central forked section of absorbent article than thickness portion, then the compression of thin part can by a pair of have be used for holding corpus fibrosum and carry out than the roller of the otch of thickness portion, can carry out by a pair of roller that separates or by inwall than the compression of thickness portion with suitable size otch.If be not contained in fully in the otch than thickness portion, its part in the otch outside just has to be suitable for the thin a part of roll gap partly of conpressed fibers body through its size between the roller.If such situation, just exist the very big danger that in the thin part of corpus fibrosum, can not obtain desired density.And the part that is positioned at otch outside than thickness portion will be compressed to too high density, the fiber in the corpus fibrosum may rupture and these parts in capillarity may lose.Also may be so thick than thickness portion so that it can not be compressed to the degree that can pass roll gap between the roller, this has just caused the shutdown in the manufacture process.For this reason, the area of otch will be less times greater than the area of corpus fibrosum than thickness portion.Otch and corpus fibrosum depend on certainly that than the area difference between the thickness portion corpus fibrosum that is placed on the moving belt is than the alignment accuracy between the otch on thickness portion and the rotation roller.Yet,, this area difference also must be arranged to guarantee will being contained in this otch of each corpus fibrosum to compression roller than thickness portion even accuracy is very high.
Corpus fibrosum is in thin part, still not to be compressed after through the roll gap between the roller than the borderline region around the edge of thickness portion than the consequence that has area difference in thickness portion and the roller between the otch.This borderline region just has low-down mechanical strength and will break easily.
Target of the present invention provides the device that is used to strengthen this borderline region.
Summary of the invention
This target is realized by a kind of method than the borderline region between thickness portion and the thin part that strengthens the absorbent article corpus fibrosum, it is characterized in that, pattern of compressed spots is provided for described borderline region, decrement increases on the direction away from the described edge than thickness portion of described corpus fibrosum gradually.
In a preferred embodiment, increase gradually on direction by the area of described pattern of compressed spots compression away from the described edge than thickness portion of described corpus fibrosum and described pattern of compressed spots extend into described corpus fibrosum than thickness portion.
In first possibility of preferred embodiment, described pattern of compressed spots has the compression point that number increases gradually in the per unit area on the direction away from the described edge than thickness portion of described corpus fibrosum, compression point is compressed to same depth with respect to the described upper side than thickness portion of described corpus fibrosum.
In second possibility, described pattern of compressed spots has the same number of compression point in the per unit area, compression point has the size that increases gradually on the direction than the edge of thickness portion away from described corpus fibrosum, compression point is compressed to same depth with respect to the described upper side than thickness portion of described corpus fibrosum.
In a second embodiment, the compression point point in the described pattern of compressed spots is compressed to the different degree of depth with respect to the described upper side than thickness portion of described corpus fibrosum.
The invention still further relates to a kind of device that is used for strengthening the absorbent article corpus fibrosum than the borderline region between thickness portion and the thin part, it comprises a pair of roller and is used for allowing and has at least one than corpus fibrosum of the thin part of thickness portion and at least one device through roll gap between the roller of described roller centering, it is characterized in that, at least one raised design is located on the outer periphery surface of at least one roller, the edge of the opening of described by this raised design at least one roller extends, each projection in the described raised design from the outer periphery surface of described roller outwards outstanding and have with the tangent plane of the outer periphery surface of described roller cross section, and the cross-sectional area summation that is the per unit area protrusions increases on the direction away from the edge of described opening gradually.
In a preferred embodiment, at least one roller of described roller centering comprises and is used for holding the otch of corpus fibrosum than thickness portion, but the described opening in the raised design has less size so that raised design extends beyond the edge of described otch and enters in the part of described otch with otch is coaxial.
In first possibility, described projection has identical cross sectional dimensions and described pattern and have the projection that number increases gradually in the per unit area on the direction away from the edge of described opening, and the end of all projectioies is arranged in the same plane tangent with the outer periphery surface of described roller.
In second possibility, described pattern has the same number of projection in the per unit area on the direction away from the edge of the opening in the described raised design, the cross sectional dimensions of described projection increases on away from the direction at the edge of described opening gradually, and the end of all projectioies is arranged in the same plane tangent with the outer periphery surface of described roller.
At second embodiment of this device that is used for carrying out the inventive method, the end of projection is arranged in the Different Plane tangent with the outer periphery surface of described roller.
The invention still further relates to a kind of corpus fibrosum that is used for absorbent article, its have at least one than thickness portion and with described at least one thin part adjacent than thickness portion, it is characterized in that described at least one be provided with pattern of compressed spots than the borderline region between thickness portion and the adjacent with it thin part, the decrement in the borderline region increases on the direction away from the described edge than thickness portion of described corpus fibrosum gradually.
In a preferred embodiment, the compressing area in the borderline region on direction, increase gradually away from the described edge than thickness portion of described corpus fibrosum and described pattern of compressed spots extend into described corpus fibrosum than thickness portion.
In first possibility, described pattern has the compression point that number increases gradually in the per unit area on the direction than the edge of thickness portion away from described corpus fibrosum, compression point is compressed to same depth with respect to the described upper side than thickness portion of described corpus fibrosum.
In second possibility, described pattern has the same number of compression point in the per unit area, compression point has the size that increases gradually on the direction than the edge of thickness portion away from described corpus fibrosum, compression point is compressed to same depth with respect to the described upper side than thickness portion of described corpus fibrosum.
In a second embodiment, the point in the described pattern is compressed to the different degree of depth with respect to the described upper side than thickness portion of described corpus fibrosum.
Description of drawings
Now with reference to accompanying drawing the present invention is described, in the accompanying drawings:
Fig. 1 schematically shows the side view that is used for device that in accordance with a preferred embodiment of the present invention absorber is compressed,
Fig. 2 shows the plane graph of device shown in Figure 1,
Fig. 3 schematically shows the side view of absorber after thicker and thin part is compressed,
Fig. 3 A shows the part of absorber shown in Figure 3 with the size of amplifying,
Fig. 4 schematically shows the plane graph of the absorber of being made by Fig. 1 and 2 shown device,
Fig. 5 shows the sectional view of V-V line in Fig. 3,
Fig. 5 A with the size of amplifying show absorber shown in Figure 5 the part and
Fig. 6-11 shows the partial schematic plane graph according to the absorber of further embodiment of this invention.
The specific embodiment
Fig. 1 and 2 shown device comprises first delivery wheel 1, is used for being placed on the moving belt 3 first air-laid (air-laid) cellulose fluff batt 2 or the top of annular connecting gear, and this band can be the band of being made by package sheet material.Ground floor 2 preferably forms in tuft (mat) form wheel (not shown) and is deposited on then on the delivery wheel 1.If ground floor 2 can synchronously form with advancing of moving belt 3, then can omit delivery wheel and take turns 1 can be the tuft form wheel.Can find out that from Fig. 2 ground floor 2 is a hourglass shape.The direct of travel of moving belt 3 be in Fig. 1 and 2 to the right, as shown by arrows.
In the downstream of wheel 1, second delivery wheel 4 is arranged the second air-laid cellulose fluff batt 5 is placed on the core of ground floor 2.Clearly, ground floor 2 all extends beyond outside the periphery of the second layer 5 in each side from Fig. 1 and 2.Thereby obtained to have thin part and the center corpus fibrosum 6 than thickness portion, thin part is the part of extending in the second layer 5 periphery outsides of ground floor.
The first pair of compression roller 7,8 that is used for the thin part of densification corpus fibrosum 6 is arranged in the downstream of wheel 4.The roller 7 of first pair of compression roller is provided with otch 9,10 so that hold these parts at corpus fibrosum 6 when passing through the roll gap between the roller 7,8 than thickness portion (promptly layer 5 and layer 2 are positioned at the core of layer below 5).Otch 9,10 so is arranged on the roller 7 so that will alternately be contained in otch 9 and 10 than thickness portion through the subsequent fibrous bodies 6 of roll gap.In order to ensure layer all part of 5 of corpus fibrosum 6 of process can not be positioned at the outside of otch 9,10, these otch have the area bigger than layer 5.In the embodiment shown, the degree of depth of otch equals layer 5 height or bigger.
Area difference between otch and the layer 5, be the required tolerance of otch, especially depend on layer 2,5 between the rotary speed of the deposition accuracy on the moving belt 3, speed and roller 7,8 with 3 synchronously and also have the fastening degree (usually by means of captivation) that corpus fibrosum 6 is kept on tape.
Second pair of compression roller 11,12 is arranged in the downstream of first pair of rollers 7,8.When corpus fibrosum 6 during through the roll gap between the rollers 11,12, being compressed of corpus fibrosum 6 than thickness portion.
In Fig. 3 and 3A, corpus fibrosum 6 is directly schematically to illustrate through the state after this pair of rollers 11,12.Since the area of otch 9,10 greater than corpus fibrosum 6 than thickness portion (layer 5), thin part 2 just can not be compressed in the borderline region 2a around layer 5 periphery.And, this not the borderline region 2a of pressurized will have different width and for also changing with 11,12 different corpus fibrosums 6 through these two pairs of compression rollers 7,8 in succession at the not ipsilateral of layer 5.These are different usually for maximum with the edge of the vertical layer 5 of the direct of travel of moving belt 3.The result of the borderline region 2a of pressurized is not, corpus fibrosum 6 is very little and during follow-up manufacturing and the packaging step it is being handled or be easy to break during the user handles it in this field strength.
According to the present invention, a pair of being used for provides the roller 13,14 of pattern of compressed spots to be arranged in to be used for downstream to the roller 11,12 that compresses than thickness portion of corpus fibrosum 6 to described borderline region.And in the case, comprise layer 5 the contacted roller 13 of a side with corpus fibrosum and be provided with two otch 15,16, be used to hold the corpus fibrosum 6 that passes through roll gap between the described roller in succession than thickness portion.Roller 13 also is provided with raised design 17.Pattern 17 is equivalent to the width of the borderline region of corpus fibrosum 6 at extension on every side of the edge of each otch 15,16 and width.In addition, this pattern preferably also extends into otch 15,16 at its marginal area.
In the embodiment shown, pattern 17 is made of the projection with circular cross section and half-spherical tip.The end of all projectioies all be in the tangent same plane of the outer peripheral edge surface of roller 13 in, promptly projection is extended identical radial distance from the outer surface of roller 13.This means that the projection in the otch has the projection longer length outer than otch.And on the direction away from notching edge, described pattern 17 has the projection that number increases gradually in the per unit area.
Fig. 4,5 and 5A in, corpus fibrosum 6 is depicted as the roll gap that has passed through between the roller 13,14.Raised design 17 has produced pattern of compressed spots 18 in than the borderline region around the edge of thickness portion 5, this pattern also extends into than short distance of thickness portion, as schematically illustrated in these accompanying drawings.On away from the direction than the edge of thickness portion, promptly from than the nearest edge towards thin part 2, the edge of thickness portion 5, the compression point number in the per unit area increases gradually.The accurate location of pattern of compressed spots on corpus fibrosum 18 depend on certainly progressive corpus fibrosum 6 than the alignment of thickness portion with respect to otch 15 or 16.As mentioned above, this alignment will change along with the corpus fibrosum of each process roller 13,14, and maximum variation is on the direct of travel of moving belt 3.Thereby, for a corpus fibrosum 6, than thickness portion be positioned on the direct of travel forward a side will than through next corpus fibrosum 6 of roller 13,14 than the otch 15 of the more close roller 13 of a corresponding side of thickness portion or 16 adjacent wall.In order to guarantee that the institute that raised design 17 will reach the borderline region around the periphery than thickness portion 5 have a few, raised design 17 thereby preferably stretch into otch than the distance of lacking around the periphery of otch 15,16.In Figure 4 and 5, as shown in the figure, through roller 13,14 o'clock, orientate adjacent wall as than the more close otch 15 of its left end or 16 than the right-hand member of thickness portion 5.Thereby pattern of compressed spots 18 extends into the distance bigger than thickness portion 5 at the right-hand member of corpus fibrosum 6 than left end.This also means, pattern of compressed spots 18 have than the right-hand member outside of thickness portion than its left end outside littler extension.The distance that raised design extends into each otch preferably is chosen as feasible, as long as than being aligned in definite tolerance between the otch in thickness portion and the roller 13 15,16, the projection of delegation at least in the pattern 17 will extend into incision periphery corpus fibrosum 6 on every side than thickness portion 5.Pattern 17 must be chosen as along the width at each edge guarantees that pattern covers is through the whole width of the not pressurized zone 2a of the thin part 2 of each corpus fibrosum 6 of roller 13,14.As mentioned above, pressurized zone 2a can not change owing to the variation of degree of registration between corpus fibrosum 6 that passes through roller 7,8 in succession and the respective cut in the roller 79,10 along the width than thickness portion 5 every sides yet.
Fig. 4,5 and 5A shown in corpus fibrosum 6 be compressed to the density of hope than thickness portion 5 by roller 11,12.Therefore, should seldom can not influence its edge gross density on every side significantly than the compression point number in thickness portion 5 per unit areas than thickness portion so that the gross area that is compressed by the projection in the raised design 17 in the per unit area is very little.On the other hand, in the borderline region than the thin part 2 outside the edge of thickness portion 5, the intensity that this is regional and total compression area are proportional, and the compression area in the per unit area is big more, and the intensity of borderline region is big more.By using counting out in the per unit area wherein, just realized the balance between the above-mentioned afoul demand in pattern of compressed spots 18 from increasing gradually on the direction of the neighboring edge of thin part 2 than the edge of thickness portion 5.From Fig. 5 A clearly, between the compression point in the pattern 18 apart from a, b, c, d away from than thickness portion 5 right hand edges vertically on reduce gradually.And also presented similar distance in the horizontal and reduce, promptly along through point 18
1The point of x wire between distance greater than along through point 18
2The point of x wire between distance, along through point 18
2The point of x wire between distance greater than along through point 18
3The point of x wire between distance, or the like.
Also observe, when the compression point in the pattern 18 was close to each other, the density of fibrous material also can increase in described some peripheral region.This phenomenon believes owing to the interaction between the fiber produces, and therefore depend on fiber in the corpus fibrosum 6 type, fiber length and also have distance between the fiber, promptly this effect is obvious more, fibrous material is got over pressurized.
In the above-described embodiments, the enhancing than the borderline region between thickness portion 5 and the thin part 2 is to carry out than thickness portion with in than the division step after approaching the step that partly is compressed to desired density.Can certainly by give the roller 7 shown in Fig. 1 and 2 provide with roller 13 on the suitable raised design of pattern 17 allow this enhancing and the compression of thin part carry out simultaneously.In the case, preferably before the compression of thin part, carry out than the compression of thickness portion.Also can give the roller 11 shown in Fig. 1 and 2 provide with roller 13 on pattern 17 similar raised designs and with the enhancing of borderline region and will carry out simultaneously than the step that thickness portion is compressed to desired density.The third probability is to carry out corpus fibrosum than thickness portion and the compression of thin part and the enhancing of borderline region in a step.This can by the otch in the roller 79,10 is designed to make otch the degree of depth so less than than the height of thickness portion so that in than thickness portion, obtain the density of wishing and give simultaneously roller 7 provide with roller 13 on the suitable raised design of pattern 17.Can certainly in same step, carry out than thickness portion with than approaching compression partly and in a step of separating, using roller 13,14 to carry out the enhancing of borderline regions by the otch 9,10 that suitably designs in the roller 7.
Also can before compression is than thickness portion and thin part, carry out the enhancing of borderline region.The advantage of this order is to be easy to penetrate the opening in loosely engaging portion and the raised design and to be easier to aim at than thickness portion, because this part not have to occur because the overheating effect (baking out effect) that compresses.If the enhancing of borderline region is carried out as last step, promptly after compression is than thickness portion and thin part, the density that fibrous material in described some peripheral region causes owing to the interaction between the fiber increases and will improve more and the length of projection need not with aforementioned the same long, because thicker and thin corpus fibrosum thickness after compression all can reduce.
Also can give roller 14 provide with roller 13 on the similar raised design of pattern, and the central opening in the pattern is corresponding to the position of otch in the roller 13.
Be pointed out that also if the enhancing of corpus fibrosum is carried out, the otch 15,16 in the roller 13 can be removed in a step of separating, and and this step be before the step of compression than thickness portion and thin part, afterwards or between carry out irrelevant.
In described embodiment, the pattern 17 that increases gradually on away from the direction at the edge of otch 15,16 by the number of projections in its per unit area that increases gradually of the compression area in corpus fibrosum 6 per unit areas is realized.Yet, also can change the size of pattern protrusions rather than the number of projections in the per unit area.Thereby the increase gradually of the compression area in the per unit area can realize by the increase gradually of pattern protrusions size.
The third method that changes decrement in the thin portion boundary zone is that the length by pattern 17 protrusions increases the height that changes compression point in the corpus fibrosum 6 gradually on the direction away from the edge of otch 15,16.By means of this pattern, the height of compression point will change in the borderline region.
In above-mentioned three kinds of methods two or all be can certainly make up and decrement, the i.e. variation of the variation of compression point number, compression point size and the variation of compression point height in the pattern of compressed spots changed.
The end of projection can be other shape outside the hemispherical, for example taper or taper shape, hexagon, rectangle etc., but projection preferably should be outwards gradually thin be pushed fibrous material in its lateral considerable part open simultaneously so that they can puncture into corpus fibrosum.The cross section of projection is illustrated in the cross section of the largest portion of the projection that punctures into corpus fibrosum during the enhancing of borderline region of corpus fibrosum.It is the burble point pattern that pattern of compressed spots need not, but the hope gradual change of pattern can realize by the combination of interconnection lever grid or grid and point.
The schematic plan view that is used for various patterns of the present invention is shown in Fig. 6-11.In all these accompanying drawings, show part according to corpus fibrosum of the present invention, corpus fibrosum have Reference numeral 5 and thin part has Reference numeral 2 than thickness portion, be shown in broken lines than the error E T of thickness portion and cut alignment.
In Fig. 6, show the pattern similar in further detail to pattern shown in Figure 4 18.The number that has the thickness that all equate and point with the constricted zone shown in the stain increases on away from the direction than the edge of thickness portion gradually.
In Fig. 7, pattern 19 is made of the compressed lines that is connected with each other.The number that compressed lines has the thickness that all equate and a line increases on away from the direction than the edge of thickness portion gradually.This pattern of compressed lines is formed by the roller that has from the outstanding lattice of its periphery surface.
In Fig. 8, compression pattern 20 is combinations of pattern shown in Fig. 6 and 7, i.e. the combination of compressed lines and point.
In Fig. 9, pattern 21 is parallel to each other and the pattern of the compressed lines that equates of mutual distance.Yet the thickness of compressed lines is increasing on than the direction at the edge of thickness portion gradually.
In Figure 10, pattern 22 also is the pattern of compressed lines parallel to each other.The number that compressed lines has the thickness that all equate and a line increases on away from the direction than the edge of thickness portion gradually.
In Figure 11, pattern 23 is patterns of the equal compression point of mutual distance, and described distance is measured between the heart therein.Yet the size of compression point is increasing on than the direction at the edge of thickness portion gradually.
In this article, " first " of the absorber that defines in claims and " second portion " refer to has zone of different nature, such as different-thickness, density or composition, in the time of for example above less core is placed on than big core, the first thicker zone just forms in the center and is surrounded by second thinner region.
It is to be noted that word " than thickness portion " and " thin part " refer to the state of finished fiber body.But this may be positioned on the meaning wherein of the present invention around the core thin part than described core thick be compressed subsequently so that its under compressive state than the situation of centre portion thinner.This situation and analogue should comprise in the present invention.Can also there be other reason except that the thickness difference to avoid its some part to be compressed by compression the time, for example has core when core is subjected to the pressure of roller that the part of centre portion outward is compressed (if with regard to danger close) of desired density or other character in the part of corpus fibrosum.The present invention has also considered this situation.And what will protect also can be outside, therefore, replaces otch, and the outside ledge on the roller is carried out the compression to core, wants edge that enhanced borderline region will divide on the direction at its center so from central division.
The device that Fig. 1 and 2 schematically shows is the part of the tinuous production of disposable absorbent article (such as disposable diaper, pant diaper, sanitary towel, incontinence shield etc.) preferably.If moving belt 3 is bands of being made by packaging material, so afterwards at possible intervention treatment step (such as elasticity is provided), second band of making by packaging material just be placed on moving belt 3 with and on the conpressed fibers body of embarking on journey that comprises above.If moving belt 3 is not the band of being made by packaging material, corpus fibrosum 6 just is sent to the moving belt of being made by packaging material so.Because the volume of corpus fibrosum 6 have the enhancing of its borderline region is not obviously reduced, thus can be these corpus fibrosums be enclosed between two bands of being made by packaging material after execution enhancing step again.
Certain described embodiment can make amendment within the scope of the present invention in many ways.Replacement is made up of two air- laid layers 2,5 that transmit respectively on moving belt 3, and corpus fibrosum 6 can be by air web in same mould.Layer in the corpus fibrosum can comprise other composition that is mixed into cellulose villus, such as particles of superabsorbent material.And, also can use other material that is used for compressible cores, such as other natural fiber, synthetic fibers or its mixture, peat etc. Layer 2,5 can have other shape, and layer 2 for example can be rectangle, and layer 5 can be hourglass shape.And, it is pattern separately that the pattern of disclosed projection and compression point need not, but can for example be the part that the pattern of compression point etc. is provided for whole corpus fibrosum, so this pattern is positioned at that part of of borderline region outside and just can be made of regular or irregular pattern.The method according to this invention not only can be used for strengthening the air-laid corpus fibrosum certainly with installing, such as the compressible cores that can also strengthen wet-laying, combing or other type.Therefore, scope of the present invention is only limited by the content of appended claims.
Claims (16)
- One kind strengthen absorbent article corpus fibrosum (6) than the thickness portion (5) and the method for the borderline region between the thin part (2), it is characterized in that, pattern of compressed spots (18) is provided for described borderline region, decrement increases on the direction away from the described edge than thickness portion (5) of described corpus fibrosum (6) gradually.
- 2. according to the method for claim 1, it is characterized in that, be compressed area and on direction, increase gradually away from the described described edge than thickness portion (5) of described corpus fibrosum (6).
- 3. according to the method for claim 2, it is characterized in that described pattern of compressed spots (18) extends into the described than in the thickness portion (5) of described corpus fibrosum (6).
- 4. according to claim 1,2 or 3 method, it is characterized in that, described pattern of compressed spots (18) has the compression point that number increases gradually in the per unit area on the direction away from the described described edge than thickness portion (5) of described corpus fibrosum (6), described compression point is compressed to the identical degree of depth with respect to a described upper side than thickness portion of described corpus fibrosum.
- 5. according to claim 1,2 or 3 method, it is characterized in that, described pattern of compressed spots has the same number of compression point in the per unit area, described compression point has the size that increases gradually on the direction away from the described described edge than thickness portion of described corpus fibrosum, described compression point is compressed to the identical degree of depth with respect to a described upper side than thickness portion of described corpus fibrosum.
- 6. according to claim 1,2 or 3 method, it is characterized in that the described compression point in the described pattern of compressed spots is compressed to the different degree of depth with respect to a described upper side than thickness portion of described corpus fibrosum.
- One kind be used for strengthening absorbent article corpus fibrosum (6) than the thickness portion (5) and the device of the borderline region between the thin part (2), this device comprises a pair of roller (13,14) and be used for allowing have at least one than thickness portion (5) and at least one corpus fibrosum (6) of thin part (2) through the device of roll gap between the roller of described roller centering, it is characterized in that at least one raised design (17) is located at one of them roller (13; 14) on the outer periphery surface, described by this raised design has an opening, projection in the described raised design is extended around the edge of this opening, each projection from the outer periphery surface of described roller outwards outstanding and have with the tangent plane of the outer periphery surface of described roller cross section, and the cross-sectional area summation of per unit area protrusions increases on the direction away from the edge of described opening gradually.
- 8. according to the device of claim 7, it is characterized in that, at least one roller (13) of described roller centering comprises and is used for holding the otch (15 of corpus fibrosum than thickness portion, 16), described raised design (17) but in described opening and described otch coaxially have a littler size, thereby raised design (17) extends beyond the edge of described otch (15,16) and enters in the part of described otch.
- 9. according to the device of claim 7 or 8, it is characterized in that, described projection has identical cross sectional dimensions, and described raised design (17) has the projection that number increases gradually in the per unit area on the direction away from the edge of the described opening in the described raised design (17), the end of all projectioies is arranged in the same plane tangent with the outer periphery surface of described roller (13).
- 10. according to the device of claim 7 or 8, it is characterized in that, described raised design has the same number of projection in the per unit area on the direction away from the edge of described opening, the cross sectional dimensions of described projection increases on away from the direction at the edge of described opening gradually, and the end of all projectioies is arranged in the same plane tangent with the outer periphery surface of described roller.
- 11. corpus fibrosum (6) that is used for absorbent article, its have at least one than thickness portion (5) and with described at least one thin part (2) adjacent than thickness portion, it is characterized in that, described at least one be provided with pattern of compressed spots (18) than the borderline region (2a) between thickness portion and the adjacent with it described thin part, the decrement in the described borderline region (2a) increases on the direction away from the described edge than thickness portion of described corpus fibrosum gradually.
- 12. the corpus fibrosum according to claim 11 is characterized in that, the compressing area in the described borderline region increases on the direction away from the described edge than thickness portion (5) of described corpus fibrosum (6) gradually.
- 13. the corpus fibrosum according to claim 11 or 12 is characterized in that, described pattern of compressed spots extends into the described than in the thickness portion of described corpus fibrosum.
- 14. corpus fibrosum according to claim 11 or 12, it is characterized in that, described pattern of compressed spots has the compression point that number increases gradually in the per unit area on the direction away from the described edge than thickness portion of described corpus fibrosum, described compression point is compressed to the identical degree of depth with respect to a described upper side than thickness portion of described corpus fibrosum.
- 15. corpus fibrosum according to claim 11 or 12, it is characterized in that, described pattern of compressed spots has the same number of compression point in the per unit area, described compression point has the size that increases gradually on the direction away from the described edge than thickness portion of described corpus fibrosum, described compression point is compressed to the identical degree of depth with respect to a described upper side than thickness portion of described corpus fibrosum.
- 16. the corpus fibrosum according to claim 11 or 12 is characterized in that, the compression point in the described pattern of compressed spots is compressed to the different degree of depth with respect to a described upper side than thickness portion of described corpus fibrosum.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0303197A SE0303197D0 (en) | 2003-11-28 | 2003-11-28 | A method of strengthening a fibrous body for absorbent articles |
| SE03031978 | 2003-11-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1886106A CN1886106A (en) | 2006-12-27 |
| CN100528113C true CN100528113C (en) | 2009-08-19 |
Family
ID=29729205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800350391A Expired - Fee Related CN100528113C (en) | 2003-11-28 | 2004-10-25 | A method and device of strenghten a fibrous body for absorbent articles |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1686937A1 (en) |
| JP (1) | JP4654198B2 (en) |
| CN (1) | CN100528113C (en) |
| AU (1) | AU2004292922A1 (en) |
| RU (1) | RU2006122941A (en) |
| SE (1) | SE0303197D0 (en) |
| WO (1) | WO2005051262A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2417951B1 (en) | 2010-08-12 | 2016-12-14 | Johnson & Johnson do Brasil Industria e Comercio de Produtos Para Saude Ltda. | Method and apparatus for making a fibrous article having a three dimensional profile and an absorbant article including a formed fibrous article |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746729A (en) * | 1994-10-27 | 1998-05-05 | Uni-Charm Corporation | Sanitary napkin |
| US6170393B1 (en) * | 1998-05-21 | 2001-01-09 | The Procter & Gamble Company | Compliant embosser assembly |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2073329A (en) * | 1934-12-29 | 1937-03-09 | Int Cellucotton Products | Method and apparatus for making sanitary napkins or the like |
| US3860002A (en) * | 1973-05-14 | 1975-01-14 | Scott Paper Co | Absorbent articles |
| JP2518012Y2 (en) * | 1990-06-15 | 1996-11-20 | 大王製紙株式会社 | Disposable diaper |
| US5830296A (en) * | 1993-09-16 | 1998-11-03 | The Procter & Gamble Company | Method for simultaneously embossing and forming a perimeter seal on an absorbent article |
| JPH1077566A (en) * | 1996-07-11 | 1998-03-24 | Uni Charm Corp | Nonwoven fabric and its production |
| AR028271A1 (en) * | 2000-03-24 | 2003-04-30 | Kimberly Clark Co | A SYSTEM FOR A HYGIENIC PRODUCT AND A PAD FOR WOMEN'S HYGIENE THAT UNDERSTANDS THIS SYSTEM |
| US6818166B2 (en) * | 2001-04-20 | 2004-11-16 | Sca Hygiene Products Ab | Method of forming a fiber web for use in absorbent products, and fiber web produced according to the method |
-
2003
- 2003-11-28 SE SE0303197A patent/SE0303197D0/en unknown
-
2004
- 2004-10-25 EP EP04793844A patent/EP1686937A1/en not_active Withdrawn
- 2004-10-25 RU RU2006122941/14A patent/RU2006122941A/en not_active Application Discontinuation
- 2004-10-25 JP JP2006541076A patent/JP4654198B2/en not_active Expired - Fee Related
- 2004-10-25 CN CNB2004800350391A patent/CN100528113C/en not_active Expired - Fee Related
- 2004-10-25 AU AU2004292922A patent/AU2004292922A1/en not_active Abandoned
- 2004-10-25 WO PCT/SE2004/001543 patent/WO2005051262A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746729A (en) * | 1994-10-27 | 1998-05-05 | Uni-Charm Corporation | Sanitary napkin |
| US6170393B1 (en) * | 1998-05-21 | 2001-01-09 | The Procter & Gamble Company | Compliant embosser assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005051262A1 (en) | 2005-06-09 |
| AU2004292922A1 (en) | 2005-06-09 |
| EP1686937A1 (en) | 2006-08-09 |
| JP4654198B2 (en) | 2011-03-16 |
| CN1886106A (en) | 2006-12-27 |
| JP2007516359A (en) | 2007-06-21 |
| SE0303197D0 (en) | 2003-11-28 |
| RU2006122941A (en) | 2008-01-20 |
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