CN101175421A - Methods for making fasteners - Google Patents
Methods for making fasteners Download PDFInfo
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- CN101175421A CN101175421A CNA2006800162705A CN200680016270A CN101175421A CN 101175421 A CN101175421 A CN 101175421A CN A2006800162705 A CNA2006800162705 A CN A2006800162705A CN 200680016270 A CN200680016270 A CN 200680016270A CN 101175421 A CN101175421 A CN 101175421A
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- Absorbent Articles And Supports Therefor (AREA)
- Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
There is provided a fastener for engaging with a loop fabric, comprising a base having a front surface with a multiplicity of engaging projections. At least some of the engaging projections having a top surface end and an attached end. The at least some engaging projections top surface ends form an edge angle surrounding the projections. A mantle surface extending from the top surface end edge to the attached end. Generally at least one contour line of a side view of the mantle surface is strictly convex from the top surface edge to the attached end. The attached end can be fused to the front surface of the base and the top surface forming an edge at least partially surrounding the projection. There is also provided a first method for forming a fastener, comprising: . providing a multiplicity of suitable polymer particles.
Description
Technical field
The present invention relates to the manufacture method of fixture,, also claim the element of the protrusion on the shackle-type fixture in particular for connecting enclosed type.
Background technology
Usually use some fixture to fix paper diaper, training pants and incontinence clothing around the shackle-type of clothes setting.A kind of method is to adopt the thin molded protrusion fixture with low apical ring shape material, preferably adopts non-woven fabric as recessed element.The use of these materials is very important, because their costs are low, soft-touch, intensity is suitable and increased the stretching, extension of waist.In this article the speech of Shi Yonging " annular " also comprise on the lower position can with the free part of protruding the fabric threads that element mechanically combines, those thin non-woven fabrics for example, the use of this speech is consistent with it in removable fixture Application for Field.
Hook can be directly molded and shaped, for example the assignee be among the patent US5315740 of Velcro disclosed like that, in this patent disclosed molded and shaped hook have low displacement space so that its only need with endless fabric strut a little space just can in conjunction with.This patent disclosure a kind of introversion hook, thereby just its top is bent downwardly from the upper end of hook and points to substrate and defined a fabric retaining groove at the downside of hook.
The stem of Overmolded moulding also is known on blank.Adopt mushroom-shaped that this method obtains in conjunction with protuberance at US5, open in 679,302 and US5,879,604, wherein the polymeric layer of extrusion moulding is compressed against on the grinding tool that has die cavity, die cavity generates the stem and the base portion that protrude and integrates.Thereby the end of stem is out of shape under the hot pressing roller then and forms annular in conjunction with protuberance.US6 discloses a kind of similar method in 054,091, but between deformation phases, thereby the thermal deformation surface mainly makes stem carry out the hook that has flat top portion that transversely deforming has formed the J-shaped of introversion.US6, the scheme of being mentioned above the technical scheme in 627,133 is different from, because it is by US6 that stem utilizes the blank that has stem after the hot pressing roller covers, method in 287,665 is made, and just makes by the particular manufacturing craft that is made of cylindrical printing screen.All documents of mentioning in this section all are similarly, handle because they have all adopted hot-rolling that prefabricated stem has been carried out flattening.
Disclose a kind of method among the U.S. Patent application 2004/0031130A1, product wherein comprises polymeric caselet portion and integrates with base portion and from the stem of base portion projection, and this product is to utilize mould roller extrusion modling with many meticulous die cavitys.The distal portion of these stems is heated fusing then and still keeps the solid state of cooling bottom it.The end of fusing utilizes textured surface to flatten then.Same method just heats then the method that flattens also at US6 to stem, 592 in advance, 800, US6,248,276 and US6, occur in 708,378, thereby they also disclose the contact surface that utilizes alligatoring and cover to form and have the method in conjunction with protuberance of alligatoring flat-top.
US6,039,911 discloses a kind of stem anamorphic attachment for cinemascope, and this device comprises long transformable clamping part, the conveyer belt of a pair of mating reaction for example, the distortion that gradually reduces of this clamping part pair and base portion all-in-one-piece stem.
US6,470,540 utilize the hot extrusion layer that stem is out of shape, and what the result formed is spherical mushroom head.
At patent US3, a kind of protrusion fastener elements has been described in 550,837, each joint portion of this fastener elements is made of the irregular particle with many plane surfaces that is bonded on the base portion.The wing plate that this fixture is suitable for fixing disposable carton prevents opening of wing plate.The combination of this fixture is by comprising that many small planes realize with the particle that forms many plane surfaces.
At US2, in 922,455, the spur of different shape is connected on the wire filament, and these wire filaments protrude from base portion, has formed the binding member that protrudes retaining element.
In the open text WO01/33989 of PCT, particle is the random distribution of the distribution head of utilization distribution coating machine and is fixed on the base portion.Each is made of several agglomerated particles in conjunction with protuberance, although also can use some single particles.
Purpose of the present invention just provides a kind of low cost with superior function and protrudes mechanical fixed part.Another object of the present invention has the protrusion mechanical fixed part of commercial appeal and the method for making them with regard to the fixture that provides with respect to present use.
Summary of the invention
The invention provides a kind of fixture of combining with endless fabric of being used for, this fixture comprises the base portion with front surface, on front surface, be provided with many in conjunction with protuberance, at least some have the upper surface end in conjunction with protuberance, wherein said at least some formed edge angle in conjunction with protuberance upper surface end, and attached end and extend to the lid shape surface of described attached end from described upper surface end edge around described protuberance; Described lid shape surface from top surface edge to described attached end at least one outline line from the side is strict dome.
The present invention further provides a kind of fixture of combining with endless fabric of being used for, comprise base portion with front surface, on front surface, be provided with many in conjunction with protuberance, at least some have upper surface end and attached end in conjunction with protuberance, described attached end is fused on the front surface of base portion, and described upper surface has formed one at least in part round the edge of described protuberance.
The present invention further provides a kind of fixture of combining with endless fabric of being used for, this fixture comprises the sheet base portion with front surface, on front surface, be provided with many in conjunction with protuberance, at least some have upper surface end and attached end in conjunction with protuberance, wherein at least some in conjunction with in the protuberance at least some adjacent in conjunction with protuberance along adjacent lateral edge merge formed merge in conjunction with protuberance.
Protrusion mechanical fixed part of the present invention preferably can with thin or ultra-thin endless fabric, especially non-woven fabric combination.Because their shape, fixture can mildly be connected with endless fabric.If apply the shear-type load of an appropriateness, these are located substantially on the plane, upper surface place and the edge that forms the protuberance of edge angle just can be easy to enter endless fabric, do not need endless fabric is strutted too big space.
The present invention further provides the method for moulding fixture, having comprised:
Many suitable polymers particles are provided;
Base portion with front surface is provided;
Contact release surface with suitable surface energy is provided;
Scatter many polymer beads on described contact release surface, thereby form the independently prefabricated protuberance that is positioned on the described contact release surface, these prefabricated protuberances project on the corresponding end from described release surface;
With spreading to that polymer beads on the described contact release surface becomes is to have the viscid state of suitable viscosity (generally carrying out immediately after distribution at the latest) at least, with at least some described particles with contact one section time enough of release surface contact being transformed into the time of prefabricated protuberance with engagement edge, described engagement edge be subjected to polymer beads the surface can with the influence of the surface energy that contact release surface;
The front surface of base portion contacted with the end of at least some prefabricated protuberances and fixing;
Remove base portion, thereby the prefabricated protuberance that will be fixed on the base portion separates from described release surface; And
Final form from base front surface protrude in conjunction with protuberance.
The present invention further provides a kind of method of moulding fixture, having comprised:
Many suitable thermoplastic granulates are provided;
Base portion with front surface is provided;
Thereby described many polymer beads are optionally scattered and are bonded on the front surface of base portion and form independently protuberance, these independently protuberance attached to projecting to corresponding end on the front surface of base portion and from basic front surface;
Anamorphic attachment for cinemascope with contact surface is provided;
The end of described protuberance contacted with the contact surface of described anamorphic attachment for cinemascope make described terminal distortion, so that they form the chimb (this process that is the contact angle of acute angle with described forming polymer one-tenth also is called sharpening) with edge of acute angle angle, thereby form in conjunction with protuberance.
Each preferred embodiment in, protrude that corresponding method has the following advantages among mechanical fixed part and the present invention:
Protruding mechanical fixed part can contact with skin is comfortable;
The material of base front surface or the selection of whole base portion are independent of described in conjunction with protuberance, and this feature can make fixture have the advantage that can replace naturally;
Hard (thereby intensity is big) be in conjunction with (thereby can comfortable contact with skin) base portion combination of protuberance and softness,
(flexible) extendible base portion,
Cheap base portion, because the base portion effective method manufacturing by economy individually, thereby the moulding of base portion is optimized,
Have high-intensity base portion,
Elastomeric base portion, thereby can contact with skin is comfortable,
Extremely thin base portion, thereby can contact and low price with skin is comfortable,
Base portion has and is used for the rear surface with proper compatibility that bonds with other materials,
The free ability that changes base material easily, thus outward appearance and the structure of making good fixture can be improved, just construct again.
Usually, the protrusion fixture that utilizes method of the present invention can moulding to have advantageous characteristic cheaply.Particularly described protrusion fixture is compared with previous fixture has novel structure and outward appearance.Corresponding method of manufacture can be made diversified low-cost fixture.
The novel fixture that utilizes method of the present invention also can moulding can combine with low apical ring shape fabric, particularly ultralow top non-woven fabric, described combination preferably has high shear strength (isotropism fixture) on all directions.
Protrusion mechanical fixed part of the present invention can also be used in the paper nappy.One preferred embodiment in, thereby described fixture can remain on the diaper that has ight soil a folding state safely with outer enough the combining closely of the non-weaving of diaper.In addition, preferably make with the non-weaving of diaper outer field combine enough tight so that can safely diaper be centered around during use clothes around, therefore, independent just the wearing that special-purpose endless fabric is set in the land is unnecessary, thereby in conjunction with providing cost savings greatly.
Protrusion mechanical fixed part of the present invention also can be used for forming so-called wrap back-to-back, on a face of described wrap, be provided with fixture of the present invention, thereby from the present invention, amplify out so new possibility, for example a kind of cheaply, high elastic and strength, the extremely thin or easy wrap of cutting.One preferred embodiment in, described wrap can easily be write with pen in the above.Another preferred embodiment in, described wrap can flexiblely stretch, and can preferably is used for packing or technical (for example parcel of cable) used.
Detailed description of the Invention
The invention provides a kind of fixture of combining with endless fabric of being used for.This fixture comprises the base portion with front surface, is provided with many in conjunction with protuberance on front surface.At least some have the upper surface end in conjunction with protuberance, wherein said at least some formed edge angle in conjunction with protuberance upper surface end around described protuberance.Relative with the upper surface end is attached end, and this attached end is attached on the front surface of base portion.Exist a lid shape surface to extend on the attached end from described upper surface end.In some embodiments, the described lid shape surface from top surface edge to described attached end from the side at least one outline line be strict dome.
The present invention further provides a kind of fixture of combining with endless fabric of being used for, this fixture comprises the base portion with front surface, on front surface, be provided with many in conjunction with protuberance, at least some have upper surface end and attached end in conjunction with protuberance, described attached end is fused on the front surface of base portion, and described upper surface formation one centers on the edge of described protuberance at least in part.
The present invention further provides a kind of fixture of combining with endless fabric of being used for, this fixture comprises the base portion with front surface, on front surface, be provided with many random distribution in conjunction with protuberance, at least some have upper surface end and attached end in conjunction with protuberance, wherein at least some in conjunction with in the protuberance at least some adjacent in conjunction with protuberance along adjacent lateral edge merge formed merge in conjunction with protuberance.
Described protrusion fixture material can be obtained by first kind of preferable methods, and polymer beads at first is fixed on the base portion in the method, by they are contacted with textured surface they is covered or flattens then.In second kind of preferable methods of the present invention, polymer beads at first is applied on the release surface, be molded into the prefabricated protuberance that has the acute angle contact angle about release surface, thus then described prefabricated protuberance is transferred on the base portion form have the edge of acute angle angle in conjunction with protuberance.
Therefore, first kind preferably is used for making the method for protruding mechanical fixed part and generally includes following steps:
Base portion with front surface is provided;
The thermoplastic material particle is provided;
Optionally described particle is taken to and is fixed on the described front surface, thereby form and manyly extend to the thermoplasticity protuberance or the particle of corresponding end from described front surface, wherein the end of the protuberance after the moulding is to be made of the particle that takes to and fix at least;
Anamorphic attachment for cinemascope with juxtaposition metamorphose surface is provided; And
The end of protuberance is contacted one suitable period with the juxtaposition metamorphose surface, thereby make described terminal distortion with form fixture in conjunction with protuberance, wherein at period of contact, the end of protuberance is heated on its softening temperature, and the enough low temperature of the common maintenance of while front surface is used for providing adequate stability for the part adjacent with base front surface on the front surface of base portion and the protuberance.Top end is cooled then.It is the surface of flat-top basically that the end of protuberance can form, and upper surface wherein stretches out outside the described base portion at least in part.At the end and the juxtaposition metamorphose surface period of contact of heating, the border of the contact area of formation is defined by contact wire.Along at least a portion contact wire, one of heated terminal formation is the contact angle of acute angle.
Contact angle is can (surface tension just) influence by the surface of contact surface and the terminal material that is heated, therefore the border of the flat upper surface after the moulding is defined by an edge at least in part, and described edge has an angle that influenced by the acute angle contact angle.
Of the present invention first or the base portion used of second method kind can be the continuous or discontinuous base portion blank of any appropriate, macromolecule membrane for example porous or atresia, laminated film, non-weaving blank, roll web, sheet metal and paillon foil or the like.Base portion can improve by the method for any known, for example by printing, embossing, flame treatment, layering, particle coating, dyeing or the like.Described film also can be processed, and for example more molded and shaped projectioies in the front or the back side or the groove at base portion prevents to break, forms tear line or have other characteristics.Macromolecule membrane as base portion can be orientation or unoriented, although be preferably unoriented basically in first method." particle " speech refers to solid, liquid or semiliquid particle as used herein, comprises for example particulate, spherolite, powder and droplet.The front surface of base portion can be smooth or coarse.For example, front surface can become coarse by front distribution and particle fixed thereon.Particle the method on the base portion 4 of being fixed to should be that the end of protuberance is by described granuloplastic at least.Protuberance can be made of described particle fully and need not described particle is further handled.For described particle being taken and is fixed to (smooth or roughening) front surface, can from certain methods, obtain instruction, for example arbitrarily scatter and bonding, just as the PCT that quotes disclose among the text WO01133989 disclosed, by reference it is wholely fitted into the application in disclosed.
The anamorphic attachment for cinemascope that uses in first method of the present invention is known, including, but not limited to following element: the variable clamping part of hot-rolling or dish, the preheating device that is connected with roller and lengthening.The contact surface of anamorphic attachment for cinemascope can be smooth or through suitable processing or alligatoring, the groove that is provided with for example of the prior art.Can finish jointly by the contact surface of preheating device or anamorphic attachment for cinemascope or the two heating of particle end.The technical staff can select a kind of method to keep the temperature of attached end of base portion and protuberance enough low, thereby enough solid to prevent unwanted distortion.A kind of method of exemplary realization above-mentioned purpose is exactly to keep the back side of base portion to contact with cooled surface.The upper surface of the particle after the distortion, just protuberance can come moulding by the juxtaposition metamorphose surface, but described juxtaposition metamorphose surface can be level and smooth also can be by alligatoring a little, for example be sandpaper-like or have a groove.Yet described juxtaposition metamorphose surface preferably is the plane substantially, although they are not the accurate plane on how much.But can the upper surface of these prefabricated protuberances be become not straight substantially by post processing, for example by contactless heat treatment.The known surface that influences contact angle can comprise the surface energy of particle, surface energy and their relevant interface energies of contact surface.
There is not molecular orientation substantially in protuberance as fruit granule or moulding, and contact angle mainly can be determined by the surface of particulate polymers and contact surface so.Therefore contact angle but also be subjected to the influence of time of contact should select suitable time of contact.The edge angle of the follow-up cooling protection protuberance of protuberance, and can select for example surrounding environment cooling, contact to cool off, utilize air cooling or the like.
In first method of the present invention, the protuberance after the distortion, just in conjunction with protuberance, preferably have flat top so that the fixture after the moulding to touch sensation level and smooth.The selection of the material of moulding base portion can be independent of the material of shaped granule.Technological parameter is very flexibly.Use the variable grain of different materials, shape and/or size, the product that the result obtains also is different.Also the particle with different performance can be mixed and use.The density of protuberance (for example, is not needing under the situation of conversion grinding tool) under the situation that does not increase extra cost and can change at production period.Equally, by selecting a kind of thin base portion, for example a kind of suitable film, just can produce thin fixture easily, by using little particle can further reduce the thickness of fixture, thereby obtain the little protuberance that also can play a role well with especially thin endless fabric.These shapes in conjunction with protuberance help combining with low top, thin fabric, for example or even ultra-thin spunbond non-woven fabric.The symmetry of the protuberance after method and the distortion can also provide a kind of isotropic fixture.
When first method of the present invention was implemented with low speed, it was the contact angle of acute angle with formation that the time that more is used for surface tension effects is just arranged, thereby just has sharper edge angle in conjunction with protuberance.For example, by using the variable clamping part that can the end to particle or protuberance gradually carries out the lengthening of compression, first method can be implemented slowlyer.
In this case, by cooling, the protuberance after the distortion can be cured into the compressive state of their maximum.Protuberance after distortion is in after the maximum compressive state and before they are in last curdled appearance, when them when textured surface removes, the protuberance after also might will being out of shape by stretching elongates a little.The end of the protuberance after distortion still attached on the textured surface time, can stretch the end of the protuberance after the distortion by opening clamping part, thereby makes the mid portion of protuberance become more elongated from base portion.
When the many little protuberance of needs, be preferably formed the protuberance after some distortion at least, each comprises a particle protuberance after these distortion.Because can use more cheap larger particles to form protuberance, this makes this method lower than the method cost that forms protuberance from a plurality of little particles.This low cost method can realize so that protuberance or particle to be provided by uniformly dispersing polymeric powder particles on the base portion that is moving with suitable distance.
Edge angle between the top of the protuberance after the distortion and the lid shape surface can change in wide scope.But too sharp edge angle may make the fixture weakened, thereby this may be because too thin this edge strength that makes of chimb of stretching out dies down, thereby crooked easily or fracture.Therefore, preferred contact angle is between 20 ° to 85 °, more preferably between 30 ° to 80 °.The scope of the single contact angle of the upper surface of the protuberance after the great majority distortion that Here it is.The technical staff can obtain required contact angle by the condition in this method is carried out suitable selection, the selection of other details in for example selection of granular materials and contact surface, time of contact and the juxtaposition metamorphose step.
Preferred at least some in conjunction with the upper surface or the top edge of protuberance with between the attached end on the base front surface, see it is the taper of strictness from the side.Suchly especially can utilize the method in second embodiment to form in conjunction with protuberance.Be perpendicular to the view direction of base front surface in this meaning of using of seeing from the side.The strict taper meaning be in conjunction with protuberance the closer to base portion, it is narrow more that protuberance becomes.For example, cylinder is not the taper of a strictness just.When shear-type load was applied on the fixture, such taper will be moved the fabric of combination on the front surface of base portion to, and fabric can not hindered on non-tapering part from the displacement on the front surface of base portion.Therefore, be minimum in conjunction with the moment of torsion on the protuberance, thereby the intensity of base portion can be littler, just cost can be lower, base portion can have more elasticity, it is more comfortable, thinner or the like to contact with skin.In addition, fixture can have the surface area that the big relatively top by protuberance forms, it is smoother that fixture is touched, and the attached end that is connected to base portion simultaneously on the protuberance has relatively little total surface area, thereby has increased the elasticity of fixture and the comfortableness that contacts with skin.Can also describe with the ratio of the height 101 that combines protuberance by the girth in conjunction with the zone 17,18 at top in conjunction with protuberance 13, generally be 1.1 to 50, preferred 1.2 to 20.Usually also be formed with one in conjunction with protuberance 13 and stretch out chimb 100, shown in Fig. 3 c, its normally go up the zone 17,18 and attached end 102 zones between poor.
In two kinds of methods of the present invention, between the fire end shaping period of prefabricated protuberance (second method) or during protuberance or particle deformation (first method), prefabricated protuberance or particle that some prefabricated protuberances or particle can be adjacent with other become one." becoming one " meaning is two adjacent prefabricated protuberances fusions or is merged into single prefabricated or in conjunction with protuberance.The part that may only be the close top of prefabricated protuberance or particle fuses together mutually, and their attached end remains separation, still, also may be that the adjacent prefabricated protuberance or the attached end of particle become one.The part of prefabricated protuberance or particle is become one, and remaining remain separation, can have multiple binding ability like this.This have that some become one in conjunction with the fixture of protuberance about some endless fabric, for example be used in low apical ring in the diaper bonding land, have the shear strength of enhancing.The reason of this phenomenon at first is to have the shape (in top view) of elongation by integrated form new in conjunction with protuberance, can resist the bigger moment of torsion with its elongation size quadrature like this.The second, one of them edge angle apart from the protuberance protuberance farthest after merging becomes sharper owing to integrated in the protuberance after the merging.Can infer, during integrated, because the polymeric material in conjunction with two adjacent protuberances moves to their new public centers from distal edge, its outer edges is partly reserved contact angle so-called reduction, that reduce, and the contact wire of this contact angle described center of distance or two adjacent protuberances farthest.So just allow to use a kind of further method to improve the binding ability of protuberance with respect to specially appointed coupling collar.Integrated between the adjacent protuberance made running parameters and conveniently realized economically by adjusting some, as the dose ratio of particle, perhaps by using the particle of different size and/or different melting properties.By improving the density of prefabricated protuberance or particle, the point that integrated phenomenon increases will appear.This is that the type and the shape that are subjected to particle influence.Use spheric granules still less, use more irregular particle will make the integrated increase of particle.
In the method for first embodiment,, preferably use molecule non-directional thermoplastic polymer for particle is attached on the base portion.Therefore, the non-directional thermoplastic granulates in the preferred first method can be one or more that select from following groups of grains:
Powder particle after spherolite is pulverized;
The reactant powder particle;
Precipitation method powder particle;
Droplet.
In first method, particle is fixed to is included in the particle that is retained to small part under the temperature that is higher than the particle softening temperature on the base front surface and is brought on the described front surface.
The reactant powder meaning is the polymer powder that came from the polymer of making reactant before palletize.The particle that comes from as used herein in reactant or the precipitation method powder also comprises this powder particle that size is further reduced.Droplet can be solid or non-solid, when using, is brought to and is fixed on the described front surface.The softening orientation that can further reduce any remnants in the particle of particle when particle is attached on the base portion.
A kind of modification of first method is to use the first thermoplastic particle and the second thermoplastic particle, and wherein first thermoplastic has:
Than the higher melt flow rate (MFR) of second thermoplastic, perhaps
Lower the Vicat softening temperature than second thermoplastic, perhaps
Higher melt flow rate (MFR) and the lower Vicat softening temperature than second thermoplastic.
After the moulding in conjunction with protuberance 31, comprise at least at the described terminal first thermoplastic particle 105 that forms upper surface 17,18, and the second thermoplastic particle 106 that further comprises common formation attached end.Two kinds of particles are connected with each other on joint face 104.
Preferred first thermoplastic polymer ratio is easier to fusing, constitutes the top in conjunction with protuberance, and the bottom is made of second polymer of difficult fusing.The separation of deformation effect will appear like this.This compound can making by two kinds of different polymer powders by for example adopting the method for on base portion, scattering continuously in conjunction with protuberance, preferably on the base portion that tilts, as instructing among the open text WO01/33989 of the PCT that quotes, include its whole inventive concept in the application by reference.
Second kind preferably is used for making the method for protruding fixture and mainly may further comprise the steps:
Base portion with front surface is provided;
The polymeric material particle is provided;
Moulding contact with suitable surface energy release surface is provided;
On described contact release surface, scatter many polymer beads;
Polymer beads is brought or offers semiliquid at least or soft state with suitable viscosity, on described release surface, provide prefabricated protuberance (prefabricated protuberance represent be that protuberance has been prefabricated into the shape that has in conjunction with protuberance at last at least to a certain extent on binding end), and these prefabricated protuberances project on the corresponding end from described release surface.Prefabricated protuberance forms contact angle along them with the edge that contacts the release surface contact, and contact angle can be influenced by the surface of polymer beads and contact release surface.Polymer beads maintained semi-liquid stage one suitable period so that they they with the edge that contacts the release surface contact at least a portion on to form be the contact angle of acute angle;
Prefabricated protuberance is solidified then at least in part so that the end of at least some prefabricated protuberances contacts with the front surface of base portion and fixing, keeps the shape at the edge that is formed by the contact release surface simultaneously basically;
Prefabricated protuberance then by further enough curing so that separate and remove from the contact release surface, thereby formed attached on the base portion in conjunction with protuberance.Projecting on the top of pressing in conjunction with the front surface of protuberance from base portion of these moulding, described top are molded on the contact release surface.The top of these pressings is stretched out at least in part and is formed a chimb outside the described base portion, and determines that by edge with an angle border, described angle are influenced by the acute angle contact angle at least in part.
For second method, the suitable particle that is used for making fixture should be able to be in liquid or semiliquid (just softening or suitable bending) state; And can become solid.Particle can be the drop by the irradiation liquid suspension that can solidify etc. for example, and perhaps they can be the thermoplastic granulates of describing in first method as top.Base portion can be any suitable base portion, sheet base portion for example, the film of describing such as the method in top reference first embodiment.
To the surface can, the technical staff that is familiar with of surface tension and infiltration field can select suitable polymers and the combination that contacts release surface with suitable surface energy as particle, also can select to have under the temperature with the contact release surface of moistening one suitable period of contact release surface the particle of suitable viscosity.The surface of contact release surface can be able to be formed by material known and method, for example siliconized surfaces, fluorochemical, corona discharge, flame or the like.Contact release surface and must be able to discharge specific aggregation composition granule used, half liquefaction and that solidify.Known ground, certain release surface can only discharge particular polymers but can not discharge other polymer.For example, polyethylene release surface can discharge suitable PP GRANULES but can not discharge specific polyethylene particle, because they have the trend that is welded to each other or fuses together.Word " release " refers to a kind of phenomenon as used herein, and this phenomenon is exactly not have under the situation of (unacceptable) damage or material unaccounted-for (MUF) at particle or prefabricated protuberance, and particle can be from the contact release surface separately.The contact release surface can be level and smooth or suitable handle or the alligatoring of process, the groove that has for example commonly known in the art.Can utilize the method for any appropriate that particle is spread on the release surface in advance, for example utilize the distribution unit that particle is scattered.Particle should scatter certain ratio so that they form prefabricated protuberance on per surface area, one of them particle can form a prefabricated protuberance, and prefabricated protuberance can merge as discussed above.Particle can be before spreading to the contact release surface, during and/or be semi-liquid state at least by short becoming afterwards." being semiliquid at least " refers to liquid or semiliquid.Suitable liquifying method depends on the character of the polymer of choosing, can for example comprise heat, dilution, dissolving, emulsification, distribution or the like.
Be suitable for contact on the release surface prefabricated protuberance and the front surface of base portion contact and be fixed to base portion front surface on the packing (grade of solidifying or degree) of prefabricated protuberance decide according to particular environment by the technical staff.Normally, but not necessarily, harder than the prefabricated protuberance that is molded on the contact release surface.Preferred prefabricated protuberance should have enough packings so that keep their shape at least in part when contacting with base front surface.Usually mainly mean and prefabricated protuberance will be kept at least one minimum free height and have suitable edge angle.Make prefabricated protuberance have suitable packing and depend on material, comprise cooling, drying, heating, cross-couplings, curing, chemical treatment of material or the like simultaneously.Being positioned at the prefabricated protuberance with suitable packing of contact on the release surface can be covered by base front surface, thereby base front surface can contact with prefabricated protuberance and fix.Described end is distance contact release surface end farthest.With before the front surface of base portion contacts, prefabricated protuberance can utilize the dispersed particulates that will be attached to the further interpolation on the prefabricated protuberance to wait and provide or augment.Prefabricated protuberance just may contact with base front surface when being in semi-liquid stage.In this case, after contact, before the final set, when will be prefabricated protuberance when release surface removes, prefabricated protuberance may be elongated a little by stretching, and therefore causes the middle part of prefabricated protuberance to become more elongated.The technical staff also can select to have enough flexible base portion so that contact with the prefabricated protuberance that may have inhomogeneous height.But the front surface of base portion can be smooth also can be suitably coarse, for example utilizes particle or the protuberance that before scattered and be fixed on the base portion makes it become coarse.Can bond by for example adding binding agent, ultraviolet ray irradiation carries out cross-couplings or utilizes intrinsic viscosity of contact material (base front surface or prefabricated protuberance) or the end that fuses prefabricated protuberance to be fixed on the front surface of base portion.Utilize the mode of fusion to fix and to go through in the back.Should be careful when fixing, so that the actual height of free extension or chimb that stretches out and prefabricated protuberance is adequately protected.For example, should avoid prefabricated protuberance to be submerged or the amount that is pressed in the base front surface excessive.The technical staff can decide the suitable packing that is suitable for separating and removing from release surface prefabricated protuberance and base portion according to particular environment.Prefabricated protuberance is common in their packings when release surface removes, but not necessarily, and is bigger than their initial packings when contacting with base front surface.Preferred prefabricated protuberance should have enough packings so that keep their shape at least in part when separating with release surface.Usually mainly mean to keep a suitable overall shape, especially will consider the shape of the edge angle of moulding, still, keeping with the front surface of base portion fastening contacting being arranged also is an important factor.Base portion should have enough packings usually with the shape that keeps it and prefabricated protuberance is separated from release surface.But the upper surface that is driven plain of moulding can be level and smooth also can be by alligatoring a little, for example sandpaper-like commonly known in the art or have groove.The structure of upper surface is flat by the decision of contact release surface usually basically, although be not the accurate plane on how much.But can upper surface be become not straight by post processing, for example by contactless heat treatment.Can also use the contact release surface that is not the plane, the upper surface that forms on this contact release surface just reflects the shape of this contact release surface like this.
The attached end that an advantage of second method is exactly prefabricated protuberance is less may to be subjected to influence with time of contact of the length that contacts release surface, because there is not pressure on described attached end.This has just shown allows can the work possibility of long period of surface, for example uses the release conveyer belt of lengthening on production line.In other words, the useful mechanic effect that produces of the surface tension of the end that form to flatten not can with come from the mechanic effect of setting up the end that has existed and conflict or " antagonism ".Another advantage is exactly the size that is independent of particle or prefabricated protuberance, can both obtain same contact angle.In other words, contacting all protuberances of identical time with release surface under the same conditions makes the change in size of the particle in the second embodiment method that very high nargin be arranged, and in the method for first embodiment, when contacting with the distortion release surface, if these protuberances are attached on the base portion with different height, that contact angle will depend on the size of particle.In addition, so importantly do not provide cost savings and make program simple owing to lopsided member can not occur.The linear velocity of production line and running width had improved than in the past, but cost has reduced.Another advantage is can use to have for example non-thermal plasticity polymer of better mechanical performance.
Particular form in the second method also has multiple advantage, will be described below.
If many little protuberances are favourable, each in so preferred at least some independently prefabricated protuberances in the second approach just comprises a polymer beads.
The contact angle that preferred at least some prefabricated protuberances provide in the method in second is between 10 ° to 85 °, more preferably between 30 ° to 80 °.This is the scope of the contact angle of most of single prefabricated protuberances.One preferred embodiment in, this scope is the scope of the contact angle of all prefabricated protuberances.
Just as in first method, at least some are in conjunction with all being strict tapers (preferably Yan Ge convexity) from each side between the top of the pressing of the shape of protuberance or top and the base front surface in the second approach.Utilize this method normally to be easy to realize, because utilize this method can on suitable surface, produce semi-transparent specular prefabricated protuberance, such as water droplet.This is a very big advantage of this method.In the method, the prefabricated protuberance that some prefabricated protuberances can be adjacent with other merges mutually and becomes one.Reason is to already explained before similar.In the second approach, can use non-thermal plasticity and thermoplastic polymer particles, depend on factors such as necessary strength, required surface energy, cost for selection of them.But, use thermoplastic granulates to have some special but unconspicuous advantages in the second approach.The first, use thermoplastic granulates also behind feed, they to be softened, the molecular orientation that can guarantee any remnants like this from the prefabricated protuberance be at least with contact the release surface position contacting and obtains release.Second, as fruit granule is thermoplastic, the viscosity of material liquefaction or that be half liquefaction at least that forms prefabricated protuberance can be controlled by temperature, and it is online, accurately, easily, cheaply and reversible optimizing and revising (such as adjusting and/or optimizing) for example to utilize temperature to carry out.Viscosity can have direct influence to prefabricated protuberance with the surface that contacts between the release surface to a certain extent, thereby has influence on the formation of contact angle.By selecting the adjustment of suitable temperature and heat time heating time, just can onlinely under the condition of cost be optimized adjustment not increasing to final edge angle in conjunction with protuberance to viscosity.Use thermoplastic granulates in the second approach, just can access the fixture of moulding cheaply, the flexibility (adaptability) of operation that these fixtures have can online form to fixture be adjusted.Therefore, preferably use thermoplastic polymer particles in the second approach.
If the surface of release surface can be higher slightly than the surface energy (perhaps surface tension) of liquid, drop drops on the solid release surface and will soak solid fully so, and contact angle wherein is zero.For liquid, each " solid-liquid " to having 0 to 180 ° contact angle, drop will roughly soak solid like this.For semiliquid, such as softening thermoplastic granulates, the process that forms contact angle is time-temperature phenomenon.For the solid release surface with high surface energy, if given time enough, liquid polymers will soak solid fully.If the solid release surface of high surface energy keeps the state of heat, be placed with cold solid particle thereon, the contact angle in this process is time dependent, changes to last zero contact angle from the obtuse angle that begins most.By the method that this change procedure is interrupted, for example carry out suitable cooling, just can obtain arbitrary required contact angle.Therefore, it is useful using the solid contact release surface of high surface energy in the method for the invention.But the surface of release surface can be high more, and it is just difficult more to separate this release surface from prefabricated protuberance at last.If the surface of same contact release surface can too highly will make the possibility increasing that is not intended to operate deviation with respect to the surface of polymer beads, thereby forms with respect to the too wetting prefabricated protuberance of contact release surface.If not being higher than first surface, the surface of contact release surface can (the surface energy of particle) add 60mJ/m
2, the danger of excessive wetting contact release surface just can reduce.
To such an extent as to it is too thin that the contact release surface of high surface energy also can cause in conjunction with the chimb of the too sharp formation of edge angle of protuberance, between the operating period of back, just disconnect easily, thereby cause undesirable residue.Sometimes use big contact angle or big edge angle to be good, because can improve and the reliability that protuberance is resisted that combines that forms by the edge of thin weak strength or chimb.Therefore, preferably include the contact release surface that provides the surface can be lower than first surface energy (the surface energy of particle) in the second approach.In this case, edge angle depends on the selection of material rather than online running parameter in the product.Equally, the surface of contact release surface can be low more, with regard to easy more prefabricated protuberance removed from it at last.But, preferably need certain power that prefabricated protuberance is removed from the contact release surface.Some prefabricated protuberances may with fixing not too firm of the front surface of base portion.Just strength of fixation is lower than desired intensity, and these ends may cause some to throw off in conjunction with protuberance during use.This is difficult to detect defective.Therefore, the surface that preferably contacts release surface can be higher than first surface and can (surface of particle can) deduct 23mJ/m
2For other contact release surface of this level, prefabricated protuberance is enough big thereby the protuberance that is not fixedly attached on the base front surface can be disassembled from the separating force that removes of contact release surface, so a kind of online fault detect and correction mechanism are provided.
In the preferred method of describing hereinbefore, for the prefabricated protuberance of thermoplasticity (may also be referred to as and run through protuberance), wherein at least some prefabricated protuberances and base front surface fixedly comprises by fixing that heating or fusion are carried out.
By heating carry out fixedly comprise the fusing one or other prefabricated protuberance or base front surface, this depends on material and pressure or the like.Preferably prefabricated protuberance and base front surface are all melted, thereby reach fusion.Fusion is by the mode that heats prefabricated protuberance to be fixed on the base front surface.In this case, prefabricated protuberance by be well suited for by release surface carry out from the below two all the particle of sharpening form, covering and be fixed on the base portion by fusion from top then.Described particle must be enough liquefaction to be fit to form contact angle, still during fusing, must keep enough firm so that keep their edge angle.The preferred thermoplastic polymer beads has the melt flow rate (MFR) of per 10 minutes 1 to 90 grams under the condition of the polymer that is suitable for choosing.
In the subsequent step of the method for above-mentioned second embodiment; when the front surface that fixedly is included in base portion that is undertaken by heating contacted with the attached end of at least some prefabricated protuberances, the temperature that keep the contact release surface was lower than the softening temperature of polymer beads or prefabricated protuberance.The rear surface of base portion preferably adopts heated air to heat.In addition, be higher than pressure (for example air pressure) at the gas pressure of rear surface of the base portion of heating, thereby the end of therefore base portion of heating being pressed at least some prefabricated protuberances makes prefabricated protuberance and base portion fix more firm at the front surface of heating base portion.Pressure reduction wherein can strengthen, for example will contact release surface following or base front surface above be arranged to vacuum.
Equally, in the embodiment of second method, the prefabricated protuberance with differing heights is not big problem, as long as provide soft enough base portion just can bend on the lower prefabricated protuberance.Especially preferred whole base portion is thermoplastic and is actually and was softened, in heating, will become so soft flexibly, crooked or or even can stretch easily.
If desired, can soften base portion fully, the softening fully here meaning is that all assembly and each layers all are softened on softening temperature, for example under the situation of compound base portion.
After base portion separated from release surface, some prefabricated protuberances that are not fixed on the base portion were still stayed on the contact release surface.The particle that exists residual polymerization composition granule seldom can fuse and be scattered is subsequently taken away.Still need termly they to be removed from the contact release surface, therefore need the more unified more reliable process of design.So this method preferably further comprises:
Before many polymer beads being spread on the contact release surface;
The contact release surface is heated to above the temperature of the softening temperature of polymer beads and base front surface;
Thereby the front surface of base portion is softened the release surface contact that contacts after the front surface of base portion and the heating;
Thereby the contact release surface of suitably softening base front surface being pressed to after the heating fuses in the front surface of base portion remaining polymer beads residue;
Base portion for contacting release surface and base portion suitable temperature is set, so that can separate from the contact release surface;
Base portion is separated from release surface, thereby cleared up the contact release surface.
This method uses the cleaning contact surface with the thermoplasticity characteristics of particle and base front surface significantly.In the process of carrying out above-mentioned steps, a spot of residual polymer residue will be taken away by the front surface of base portion, normally disappears in the front surface of base portion.Base portion can use then as usual.In continuous operation, for example comprise roller and conveyer belt, before particulate dispersion separately, release surface can obtain cleaning in each rotation, and therefore, the residue of contact release surface accumulation always remains on a low level.
When prefabricated protuberance was fused to base front surface, base portion was above the release surface and by the prefabricated protuberance support that connects space between base portion and the release surface.If the temperature on the base portion is higher than its softening temperature, wherein molecular orientation may produce the problem that makes the coupling part contraction that is the sheet base portion at least arbitrarily.This problem is avoidable, and for example, the situation for using compound base portion can provide the suitable back side to resist contraction.For example a kind of base portion comprises thin polymer film, and perhaps the scraps of paper are gone up the coating polyethylene layer as front surface overleaf as the back side, so just can resist the contraction that may occur in the base portion.But, if the problem of shrinking, preferably base portion avoids molecular orientation in prefabricated protuberance of fusing or particle.The molecular orientation film can carry out preliminary treatment by the release surface (can be contact release surface) after the front surface of base portion and the heating is contacted, thereby makes the front surface of base portion become molecule non-directional surface basically.In the step of cleaning, the contact release surface is pressed onto on the softening base portion, can also be pre-formed such preprocessing step and need only molecular orientation by suitable release.
Gas after the heating (preferred air) under high pressure preferably provides air nozzle to spray heated air.Nozzle preferably uses electrical heating to come heated air, but thermal source can be substituted by the thermal source of any appropriate, for example gas burner or the like.The front that base portion will be moved to the ejiction opening of nozzle makes base portion softening so that the back side of base portion contacts with the heated air that ejects then.Simultaneously, produce and keep a kind of traffic direction parallel gas flow of the general and base portion along the base portion rear surface from the heated air of nozzle ejection.If nozzle is fixed, and base portion moves along machine direction, and the direction of that thermal current will be parallel with machine direction and opposite with machine direction.Thermal current, for example the air stream of heat can produce the pulling force that acts on the softening base portion, and the rear surface of base portion is had drag interaction.Softening base portion will be stretched like this.Air-flow is fast more, and drawing effect is strong more.For the device of low discharge, the lower device of hot gas speed just, and especially thicker base portion can use the base portion that avoids molecular orientation.At high flow capacity and high gas flow rate, especially to use under the situation of thin base portion, this stretching on machine direction is very tangible, is worthless therefore.For example, on machine direction longitudinally to the stretch length of the roller that is difficult to control the thickness of fixture or can causes determining of base portion.Stretching can also be owing to the base portion attenuation, tear and cause accidental interruption.
Can come the balance stretching effect by on base portion, forming molecular orientation.If base portion on machine direction, possess the thermal contraction of being subjected to ability that just can solve the problem that stretches and to bring.The heat of gas will relax the orientation in the base portion, just will make base portion that the trend of contraction is arranged, and so just can offset the stretching effect that thermal current causes.Therefore, in the modification of the method for second embodiment, provide the air nozzle that one or more is fit to spray heated air.When base portion with respect to the motion of one or more air nozzle the time, the rear surface of base portion contacts with gas after the heating that is sprayed by one or more air nozzle.The base portion travel direction is a machine direction and substantially in the base portion plane.Base portion preferably on machine direction, have at least 1% be subjected to percent thermal shrinkage (vertically being subjected to percent thermal shrinkage).Method by heating is heated to the temperature that is subjected to more than the heat shrink temperature with base portion at fixedly comprising of carrying out.
In this " being subjected to percent thermal shrinkage " meaning in one direction of using is in contextual material, and for example in the material of base portion, this material can reduce its length or size according to the heat energy of input on given direction." being subjected to percent thermal shrinkage " of material is a percent value, and on given direction, it equals 100% and multiply by the difference of preceding length of contraction and contraction back length again divided by the preceding length of contraction.On given direction, length refers on given direction after the contraction of material, and material shrinks later length, for example the length after continuing 45 seconds under 170 ° the temperature.Contraction can be by allowing its free shrink determine in the silicone oil that for example material is immersed heat.It is found that common polymeric material just shrinks complete basically after continuing 14 seconds under 140 ° the temperature." shrinkage temperature " at this material of using refers in the environment that material is placed on the lasting rising of temperature the temperature when material begins to be subjected to thermal contraction.
The advantage of this modification of second method of the present invention is that the thermal current that it can be offset by injection is applied to stretching effect on the softening base portion.Being higher than 1% the percent thermal shrinkage that vertically is subjected to can boost productivity.Therefore, the percent thermal shrinkage that vertically is subjected to of preferred base portion is 10% at least in this modification of second method, more preferably at least 20%, again preferably at least 30%, or even at least 40%, at least 50% contacting and to fix, and concrete numerical value depends on the power and the productivity ratio of thermal current generating.
In the horizontal, (be called horizontal operative orientation in machine) on just vertical with the direction of motion of the base portion direction, the stretching effect that is applied on the base portion by horizontal thermal current is inessential, perhaps even approach zero (details that depends on nozzle arrangements).Therefore, if base portion has the high thermal contraction potentiality that are subjected in the horizontal, the perhaps high percent thermal shrinkage that is subjected to, the edge of base portion may shrink or curve inwardly, and that will fold when contacting with hot gas or be wrinkling.This does not wish to see.Therefore, preferred base portion in same plane on the direction vertical with principal direction or machine direction to be subjected to percent thermal shrinkage be zero or be lower than and vertically be subjected to percent thermal shrinkage.Be included in length increase that base portion shows in the horizontal under the heating state or the situation that stretches rather than shrink this " zero laterally is subjected to percent thermal shrinkage " of using.This different advantage that is subjected to percent thermal shrinkage is exactly to be applied to different stretching effect on the softening base portion offsetting thermal current on the direction of two quadratures.In general, base portion in same plane on the direction vertical with principal direction the percent thermal shrinkage that is subjected to of (promptly horizontal) be lower than 50%.Preferably laterally be subjected to percent thermal shrinkage to be lower than 40%, more preferably less than 30%, even be lower than 25%, concrete numerical value depends on the power and the productivity ratio of thermal current generating.On the other hand, in the horizontal can thermal expansion by the base portion of hot gas heating, may in product, produce gauffer like this.Above-mentioned situation can be come balance by making base portion have the suitable low still positive percent thermal shrinkage that is subjected in the horizontal.Therefore, under above-mentioned situation, base portion laterally be subjected to percent thermal shrinkage preferably at least 1%.
As discussed above, come from gas nozzle pull or stretching effect can be offset by vertically being subjected to percent thermal shrinkage, final lengths of the fastener product after the moulding relevant with the initial length of the base portion that provides has been provided simultaneously for this.If the thermal current that vertically is subjected to the ejection of the relatively low and gas nozzle of percent thermal shrinkage of base portion is stronger, the length of the fastener product that is produced by initial base material is just greater than the initial length of base material.By be heated contractility and reduce gas pressure or the gas flow of nozzle just can make the stretching trend of fixture reverse of raising, thereby the fixture of moulding is lacked than the base portion of making fixture.
Second method of the present invention also is included in scatters polymer beads to form the independently step of prefabricated protuberance on the contact release surface.Preferably before prefabricated protuberance is finished and solidified, should avoid making many or most of particles that will form prefabricated protuberance to contact with adjacent particle or prefabricated protuberance.The too early contact of particle can cause adjacent particle or prefabricated protuberance to become one.But if close mutually in conjunction with protuberance in fixture, the constant intensity of that fixture will be higher, and just the performance meeting of fixture is better.Distribution as the particle in this method, for example scattering, general execution be at random process, the close degree of the protuberance that obtains at last can not reach usually theoretic may maximum, just the protuberance in last product is each other even can be more close.After fixture was finished, if desired, the thermal contraction that is subjected to of follow-up appropriateness can improve fixture in conjunction with the mutually close degree between protuberance.But in order to finish this step, the base portion of the fixture of moulding must have certain percent thermal shrinkage that is subjected to.Therefore, in the modification of second method of the present invention, the fixture base portion after the shaping has at least 1% remnants, and vertically to be subjected to percent thermal shrinkage be favourable.Preferably in the present embodiment, the fixture after the moulding have at least 5% vertically be subjected to percent thermal shrinkage, more preferably at least 10%, more preferably at least 15%, even more preferably at least 20%, even more preferably at least 25%.In the method, the fixture after the moulding is subjected to thermal contraction on principal direction.Thisly can finish by any suitable method by thermal contraction, but preferred a kind ofly can make the acute angle contact angle and keep method complete substantially or that obtain appropriate protection at least in conjunction with protuberance geometric properties substantially with the fixture after the heat energy molding.Preferably the rear surface of heat energy from the fixture base portion is input in the fixture of moulding.For example, can finish such as PUR by apply hot material on the rear surface of base portion, this step is also as the part in the step that fixture is fixed on the substrate.Be subjected to percent thermal shrinkage should remain on an enough low level, so that guarantee adjacent can each interval can penetrate between in conjunction with protuberance adjacent with the part fabric that enough makes recessed fixture in conjunction with protuberance.Preferred fixture base portion be subjected to percent thermal shrinkage approximately between 0.1-25% or lower.
Economic base material, for example the thermoplastic polymer film of blow molding or cast molding may not have the economical and practical shrinkage parameters of being heated because these films have usually than required be subjected to percent thermal shrinkage higher be subjected to percent thermal shrinkage.Can produce suitable base portion with these economic base material are carried out pretreated step.Described preliminary treatment can by control come the molecular orientation of releasable material partly and do not allow it shrink fully so that material be subjected to the suitable reduction of percent thermal shrinkage.Just, if mechanically stop the contraction of high-temperature shrinkage film and keep heating simultaneously or softening, that film be subjected to the thermal contraction potentiality or the contractility that is heated will reduce rather than the physical length or the area of material are reduced to corresponding degree gradually along with the time.Therefore, preferably contact with prefabricated protuberance and the base material of these types is carried out preliminary treatment before fixing at front surface with base material.The preliminary treatment of base portion comprises:
A preliminary treatment release surface is provided;
The preliminary treatment release surface is heated to the suitable temperature that is higher than the base front surface softening temperature;
Thereby contact with base front surface and exert pressure with the preliminary treatment release surface and make base front surface softening to base front surface;
Preliminary treatment release surface after keeping softening front surface and heating contacts one suitable period, stops the free shrink of base portion simultaneously, thus reduced it at least vertically be subjected to percent thermal shrinkage;
Be arranged to suitable temperature so that base portion separates from the preliminary treatment release surface at preliminary treatment release surface and base portion; And
Base portion is separated from the preliminary treatment release surface.
As pretreated release surface, just the preliminary treatment release surface can be similar or different with the contact release surface of having discussed.The preliminary treatment release surface must discharge base portion suitably at reasonable time.Base portion preferably can stop any contraction basically, for example, is in order to keep its regular size, but mainly is its length.This can contact fully with the preliminary treatment release surface by the front surface that keeps base portion and finish.In order to achieve the above object, can be with rough stitched together of softening base front surface and preliminary treatment release surface (for example ptfe surface).In order to finish this point, preferably when base portion being contacted and press to the preliminary treatment release surface, remove the residual gas between this two surface.Base portion vertically be subjected to percent thermal shrinkage to be lowered to suitable value the time it also may (preferred meeting) be lowered by percent thermal shrinkage laterally.The time of contact is long more and temperature is high more, is subjected to the many more of percent thermal shrinkage reduction, and vice versa.
Need be this method at first in length and this method end of base portion the length of produced fastener product be more or less the same or equate.As above-mentioned, this is influenced by the suitable percent thermal shrinkage that is subjected to of pretreated base portion.Therefore, obtain vertically to be subjected in the preprocessing process value of percent thermal shrinkage reduction so that might make the length of base portion and the same length of the fixture after the moulding.In the step of this method,, in following two factors one or two are all regulated the reduction value that just can keep a balance continuously if in the preprocessing process of base portion:
The temperature of-preliminary treatment release surface, and
The time that is continued that contacts of-base portion and preliminary treatment release surface.
A kind of feasible manufacturing configuration that is used in the pre-treatment step is to use a kind of annular charge releasing belt, and the release outer surface of this charge releasing belt keeps carrying out circulatory motion along the path of band; And
For base portion is carried out preliminary treatment, the first that is positioned at the outer surface of the band on the path primary importance of band is used as the preliminary treatment release surface; And
In order to form fixture, be used as the contact release surface through the second portion of the outer surface of the band on the suitable mobile path second place that is positioned at band from primary importance by pretreated base portion; And
Base portion is provided as the form of continuous base portion film and keeps being synchronized with the movement with described band, contacts with the outer surface of band in described first and second positions.
This solution is favourable, because the preliminary treatment of base portion and this two processes of further producing fixture by pretreated base portion are used single charge releasing belt, this can realize the zero length difference between initial base portion and the final product.In order to realize two different purposes, just on one side can to base portion carry out preliminary treatment on one side can dispersed particulates forming prefabricated protuberance and contact with pretreated base portion and fixing, zero length difference needs be in operation the identical identical band of the speed of being had a few on it of use easily.The base portion speed of service with initial is identical ideally for the speed of release surface on primary importance, and the speed of service with the fastener product of moulding is identical ideally for the speed of release surface on the second place.If the base portion of realizing in preliminary treatment is subjected to the reduction value of percent thermal shrinkage to depart from equilibrium valve, with primary importance when band between the second place carries out freely contacting, this part on the base portion just has and shortens or elongated trend.This situation can detect the movement tendency that the base portion film cushioned and detected floating roller by one or more floating rollers are set.If the free part of the base portion film between two positions of band has shortened, what that will reduce pretreated base portion then vertically is subjected to percent thermal shrinkage, and vice versa.Thereby by improving temperature and/or the first of the outer surface of the longthening belt mode that prolonged time that base portion preliminary treatment continued of described band when the primary importance, can make pretreated base portion be subjected to vertically that percent thermal shrinkage reduces more, vice versa, and wherein described band of first and the base portion along the outer surface of being with is in contact condition.An extra advantage of this solution is exactly, and in each swing circle of described band, the thermoplasticity front surface by softening preliminary treatment base portion can clean out any in appearance possible polymer beads residue of charge releasing belt with contacting of charge releasing belt.
Further purpose of the present invention provides a kind of new fastener product, and it can easily obtain by above-mentioned method, has corresponding advantages.
Product of the present invention is a kind of fixture of combining with endless fabric of being used for, and comprises the sheet base portion with front surface, on described front surface, be provided with many firm preferred be basically firm or rigidity in conjunction with protuberance.Have top and attached end (may also be referred to as and run through pin) in conjunction with protuberance.Attached end contacts with base front surface on fixed part.Be fixed in conjunction with protuberance on the front surface of base portion, base portion with can be different in conjunction with the moulding material of protuberance also can be identical.At least one front surface from base portion protrudes, and can to utilize textured surface or the contact of the method utilization by second embodiment release surface to come one of moulding by the method for first embodiment in conjunction with protuberance be the top on plane substantially.But by deformation process is carried out at the top, so the shape at top is different from the shape in conjunction with the attached end of protuberance.If textured surface or contact release surface are that the top after that corresponding moulding of plane is exactly the plane.The top also can be stretched out from base portion usually at least in part, and the part of wherein stretching out also is known as chimb.
The top in conjunction with protuberance after the moulding also has the border that this top is determined at a clear and definite edge.Also have a lid shape surface in conjunction with protuberance, this surface joins with the top and extends on the attached end that combines protuberance that is positioned on the base front surface from top along top.Lid shape surface and top surface join, and to have formed basically be the edge angle of acute angle along whole edge.
During use, being fixed on the base portion should be hard solid in conjunction with protuberance basically, preferably flexible solid.The meaning of " flat-top " previously discussed and " side-looking " expression can for example found out among Fig. 3,4 and 5.The dome outline line in conjunction with the strictness of protuberance that herein uses refers to see it is a dome rather than straight line from the outside in lateral plan.The strict dome shape on the lower surface of overhanging chimb or lid shape surface has been found to be favourable, because this can make at least one have relatively large thickness in conjunction with protuberance.See in conjunction with at least one side of protuberance that at least one lid shape surface is at least a portion and the described edges abut of strict dome preferably.This dome shape has strengthened the edge strength of the chimb that stretches out base portion.As discussed above, the dome shape also have to imitate ground with bonded fabric guiding downwards with near base portion, therefore reduced to be applied in conjunction with protuberance and in conjunction with the torque on the accompanying base portion of protuberance.In different preferred implementations, see in conjunction with between the front surface of protuberance from the top to the base portion being strict taper in conjunction with at least one side of protuberance from least one.Fixture of the present invention has desired advantage.With low apical ring shape fabric, comprise ultra-thin non-woven fabric in conjunction with in, it has good shear strength.It can also have shear strength on all directions, be isotropic in essence therefore.Fixture of the present invention can also be made by intensive little protuberance, these intensive little protuberances have general flat-top with flexible base portion so that its can contact with skin is comfortable.With respect to the selection that forms in conjunction with the particle of protuberance, the selection of base portion has very big flexibility.Fixture of the present invention still cheaply.
The preferred shape of product can provide many advantages, and wherein some had been described in the preferred implementation of corresponding method in the above.
At first, if at least one of fixture sees it is that strict dome is exactly favourable in conjunction with the part of all and the side adjacency at least on the lid shape surface of protuberance at least one side.In addition, if at least one of fixture sees it all is that strict dome is exactly favourable in conjunction with the part of all and the side adjacency at least on the lid shape surface of protuberance on each side.If at least one of fixture in conjunction with the top of protuberance to seeing it all is that strict taper also is favourable from each side between the front surface of base portion.Determine edge angle by lid shape surface with the upper surface that combines protuberance.These edge angles preferably have identical edge angle along whole edge, and the size of edge angle is between 15 ° to 85 °, perhaps between 30 ° to 80 °.Further advantageously at least one of fixture sees it is strict dome in conjunction with protuberance at least one side on whole lid shape surface.Can effectively bonded fabric be directed to the front surface of base portion so downwards, to reduce torque load(ing).Further advantageously at least one of fixture sees it is strict dome in conjunction with protuberance on each side on whole lid shape surface.
Advantageously, fixture also comprise some be fixed on the base front surface by at least two polymer beads be merged together mutually in conjunction with protuberance.
Advantageously, the material of base front surface is different from least one material in conjunction with protuberance lid shape surface that they adhere to.Even more advantageously the material of base front surface is than at least one material softer in conjunction with the lid shape surface of protuberance, and wherein the soft or hard of material is decided by for example Shore hardnes figure.
In order to reach some effectiveness, advantageously the base portion of fixture is that elasticity is extensile in the base portion plane, and at least one lid shape surfacing in conjunction with protuberance is stiff.Base portion can be made of the tartan that comprises elastic layer plywood etc.So just can produce flexible fastener product, it for example is used in the diaper and wrap is especially favourable.
In addition, fixture of the present invention can also be used in other field, for example is used in to be used for being fixed to carpet or polymer sheet on floor or the ceramic tile and cord to be fixed on the fixed band of adhesion certainly on the wall in room.
Fixture of the present invention can also be molded on the surface of multiple base material.This can be a kind of aforesaid film, but can be the aforesaid any suitable surface that is used for first method, such as cloth, non-woven fabric, metallic plate or paper tinsel plate, moulding material, the scraps of paper, breathable films, laminated material or the like.For example, can be molded over the rainproof water-separating film that is used for that is used on the flat roof of building in conjunction with protuberance.This film is fixed on the top of the non-woven mat on the roof then.This system can water proof helps in the felt under this water-separating film aqueous vapor simultaneously and discharges from the side.
Just as has already been described, further purpose of the present invention is the application of the invention fixture improves paper nappy.
Aspect this, paper nappy comprises:
Body side surface near health;
With the body side surface opposed outer surface, comprise non-woven fabric;
At least one protrusion retaining element of the present invention is used for diaper is fixed on around the clothes;
At least one recessed retaining element comprises braid, is used for carrying out separable the combination with described at least one protrusion retaining element during fixing.Described recessed retaining element can be formed by the non-woven fabric of the outer surface of diaper.At least a portion of the non-woven fabric of the outer surface of diaper preferably has the shearing force of 4.9N at least with at least one separable combination of protruding between the retaining element of the present invention.
" diaper " speech also comprises baby's training pants, incontinence garment or the like as used herein.Part on the non-woven fabric of described outer surface can be a rib, and in rib, the non-textile fiber of outer surface combines with described protrusion retaining element.Can strengthen part on the described non-woven fabric by the method that for example thin layer of enough rigidity is arranged on below the non-woven fabric or imbed in the non-woven fabric of outer surface etc.Term " shear strength/shearing force " refers to peak shear strength or the maximum shear stress when the protrusion fixture is sheared separation from recessed retaining element.To the suitable selection of the non-woven fabric of diaper outer surface and protrusion retaining element of the present invention described fixture can enough effectively be combined so that will have the diaper of ight soil and remain on a folding state reliably and need not to be provided with independent kink with the non-weaving of diaper is outer.Selected the non-woven fabric of diaper outer surface suitably, described fixture just can be connected on the outer field any suitable point of diaper, and this fixedly connected be comfortable reliably.A kind of suitable non-woven fabric that whole non-woven fabric on the preferred outer surface comes to this.
In order to reach even reliable more degree, preferably in diaper, the joint portion of the non-woven fabric of outer surface has the shearing force of 9.8N at least with described at least one separable combination of protruding between retaining element of the present invention.
In addition preferred diaper in, described at least one recessed retaining element is that at least a portion by the non-woven fabric of described outer surface constitutes.
This selection of the non-woven fabric of diaper outer surface and the fixture of suitable species are not just needed to use independent just the wearing that comprises special endless fabric that is arranged in the bonding land.So just on sizable degree, provide cost savings.Thereby only need for fixture select suitable surface area reach required constant intensity guarantee during use diaper be fixed on safely clothes around.
Even more preferably, in the latter's diaper, at least a portion of the non-woven fabric of the outer surface of diaper has 2.5N/cm at least with at least one separable combination of protruding between the retaining element of the present invention
2Shear strength.Required herein shear strength is by the 1cm on the contact-making surface of non-woven fabric and described fixture
2Shearing force size on the unit are is represented.
In order to reach even degree more reliably, further preferably in diaper, at least a portion of the non-woven fabric of described outer surface has 3.5N/cm at least with separable combination between described at least one protrusion retaining element
2Shear strength.
Further purpose of the present invention provides a kind of improved wrap.This wrap comprise first side and with the first side second side surface opposite, this first side has textile material or the non-textile material that exposes, this second side comprise be fit to the protrusion retaining element of the present invention combine with described textile material or non-textile material so that with this wrap be fixed to an object around.Described textile material or non-textile material also comprise low top fabric with some free-fibers so that can with the combining of protrusion fixture material mechanical of the present invention.The advantage of this wrap be it have fine sense of touch, easily with ink write thereon, can be flexible, tensile or stretchable, cost is low and outward appearance is novel.Utilize porous, for example small perforation or nonwoven base portion and suitable non-textile web, this wrap even can be used for wrapping up the house.
Description of drawings
Fig. 1 a is a diagrammatic side views of making the device of fixture of the present invention.
Fig. 1 b is the enlarged drawing of A part among Fig. 1 a, comprises the side view of prefabricated protuberance.
Fig. 2 is the vertical view of fixture.
Fig. 3 a is the perspective view in conjunction with protuberance.
Fig. 3 b is the vertical view in conjunction with protuberance of Fig. 3 a.
Fig. 3 c is the side view in conjunction with protuberance of Fig. 3 a.
Fig. 4 a is the perspective view in conjunction with protuberance after merging.
Fig. 4 b is the vertical view in conjunction with protuberance of Fig. 4 a.
Fig. 4 c is the side view in conjunction with protuberance of Fig. 4 a.
Fig. 5 a is the perspective view of multilayer in conjunction with protuberance.
Fig. 5 b is the vertical view in conjunction with protuberance of Fig. 5 a.
Fig. 5 c is the side view in conjunction with protuberance of Fig. 5 a.
Fig. 6 is the photo of the vertical view of fixture.
Fig. 7 is the photo of the perspective view of fixture.
Fig. 8 is the perspective view of baby' diaper.
Fig. 9 is the perspective view of wrap.
Figure 10 a is a diagrammatic side views of making the device of fixture of the present invention.
Figure 10 b is the enlarged drawing of A part among Figure 10 a, comprises the side view of prefabricated protuberance.
Figure 11 is a side diagrammatic cross-sectional view of making the option means of fixture of the present invention.
The specific embodiment
Embodiment 1: the method for moulding fixture
Referring to the method for describing among Fig. 1 a.Utilize the method in second embodiment of the present invention, use the high-density polyethylene powder particle, the Du Pont polymer powder of Switzerland S.A.ND 5374-F (powder of process crushing and screening from the reactant powder) is as polymer beads 36.The maximum nominal size of these powder particles is 150 microns, and most particle is between the 80-110 micron; Fusing point is 130 ℃; Melt flow rate (MFR) is per 10 minutes 20 grams.The surface of polymer can approximately be 31mJ/m
2Base portion 4 uses the single layer polyethylene film sheet of 80 micron thickness, this diaphragm is that low density polyethylene (LDPE) (accounts for 80% weight, FA 2210 by TVK rt Hungary manufacturing, melt flow rate (MFR) is 0.26-0.35 (2.16kg/190 a ℃)) with the mixture of linear density polyethylene (accounting for 20% weight, the FS340-03 (21.6kg/190 ℃) that makes by TVK rt Hungary).Being positioned at the contact release surface 40 that discharges on the conveyer belt 39 is the brown PTFE-coated glass fiber nets with " Chemglas 100-6 " trade mark with close grain surface, and this fleece is by Hungary
Kft makes.PTFE represents polytetrafluoroethylene (PTFE).The surface of contact release surface 40 can be 18.5mJ/m
2The release conveyer belt 39 that uses is driven by two driving rolls 11.Contact release surface 40 is maintenance levels.
When operation cycle began, the contact release surface 40 of level remained on about 170 ℃ temperature by heating plate 24.Heating plate 24 can heat for 39 times at the release conveyer belt, although also can use the heating cabinet that is positioned at release conveyer belt top to heat in addition.Scatter unit 42 (being provided with the feed hopper that has feed wheel of sieve normally) and be used for uniformly dispersing polymer beads 36 on the contact release surface 40 after the heating, the averag density of distribution is about 500/cm
2, that corresponding is about 15.7g/m
2Almost each all separates with other particles to be distributed in the particle that contacts on the release surface, forms prefabricated protuberance 37 separately, and described prefabricated protuberance 37 is positioned on the release surface 40 and from release surface 40 and protrudes to corresponding terminal 46.Therefore the particle that is released after the heat heating of surface on 40 keeps state softening or fusing, just is in a semi-liquid state.Be assigned to release surface after 40 last 20 seconds at particle, they have formed the prefabricated protuberance 37 that has the contact angle 7 that is acute angle along the edge 12 that contacts with release surface 40.These contact angles 7 are measured from photo and on average approximately are 59 °.Therefore, be assigned to the contact release surface after 40 last 20 seconds at particle, it is the contact angle of acute angle that prefabricated protuberance 37 has formed.During this period, almost each particle all is to keep independently (as shown in Figure 2), but in them some can fuse together with adjacent particle and form the prefabricated protuberance 47 that merges, as shown in Figure 2.Release surface 40 is remained on 65 ℃ temperature by hair-dryer 1 cooling then.Cooling is important for the protection to the contact angle of prefabricated protuberance 37 afterwards, and is provided with the steel plate 45 with temperature of controlling well below contact release surface 40.Therefore prefabricated protuberance 44 is cured and is suitable for contacting with the front surface 20 of base portion 4.Base portion 4 is laid on the prefabricated protuberance 37 on contact release surface 40.The front surface 20 of base portion 4 and the end 46 of prefabricated protuberance 37, the top contact of just semi-transparent specular curing drop.Hot gas insufflation unit 23 is fixed on the about 15mm place on the rear surface 3 of base portion 4.At gas temperature is when the hot gas 21 of 650 ℃ (being provided with by heater) blows on the rear surface 3 of base portion 4, and release surface 39 keeps operation on 25 in the horizontal direction with base portion 4.Through calculating, the pressure that the power of blow gas produces on the back of base portion 4 approximately is 386Pa.The time that is under the hot gas through each point that calculates on the base portion 4 is 0.26 second (when on-line velocity is 2.3m/min).This has enough made base portion 4 fully softening with on the end 46 that is forced into and is fixed to prefabricated protuberance 37.Terminal 46 are fused to suitable degree so that prefabricated protuberance is fused on the base portion because of heat equally.The free height 19 of prefabricated protuberance also is maintained as contact angle 7 and edge angle 2 are the same.All parts are by hair-dryer 1 cooling then, and base portion 4 recovers the shape on plane whereby.Base portion 4 utilizes method in Fig. 1 a from contact release surface 40 to separate and remove in conjunction with protuberance 13 together with fixing on it, is wound on then on the spool 38.Has the top 18 of pressing in conjunction with protuberance 13 after the moulding, and have the chimb 100 that stretches out from all directions of base portion 4, the border around the chimb 100 determines that by edge 12 angle at edge 12 corresponds essentially to contact angle 7, in the present embodiment, edge angle is average about 59 °.Therefore, see on each side that to the attached end 12 on the front surface 20 of base portion 4, most is strict tapers (strict dome) in conjunction with protuberance 13 from the top 18 that flattens.
Utilize the method among Fig. 1 a, after removing prefabricated protuberance 37, the part of having cooled off 9 on the release surface 40 is gone back to initial position then to carry out next working cycles.But before particulate dispersion being arrived the contact release surface, contact release surface 40 should carry out following cleaning next time.Utilize heater 22 will contact release surface and be heated to 170 ℃.The molecular orientation polyethylene film 35 with front surface 29 that basic inclination is set is as base portion 4.This molecular orientation base portion 4 can contact and utilize silica gel roller 41 that it is pressed on the release surface 40 after the heating with the release surface 40 after the heating.Base portion 4 is softened and is pressed in the surface detail texture of contact release surface.Can prevent that like this base portion 4 from shrinking when molecular orientation reduces.Equally, applied pressure can fuse into residual polymerization composition granule 36 residues 8 that last working cycles may be stayed release surface 40 and make in its front surface that disappears in base portion 4 20.Two-layer then all the cooling by hair-dryer 1 and release surface 6 separation of base portion 4 from clearing up, the two all prepares next working cycles.
Present embodiment is actually that the situation of simulation drawing 1 device finishes on the experiment line, difference be do not use driving belt and usefulness be the platform that is provided with heating plate, and the contact release surface is driven by speed control dolly.This dolly is driven below aforesaid distribution unit and hot gas insufflation unit.
Embodiment 2: the method for moulding fixture
Referring to the method for describing among Fig. 1 a.Method among method in the present embodiment and the embodiment 1 is slightly different, and what use in the present embodiment is polyester film contact release surface, and the surface of this contact release surface can approximately be 52mJ/m
2The temperature of contact release surface is about 150 ℃.Approximately be 30 seconds the time of contact in the present embodiment, and observed contact angle 7 is on average about 43 ° in this time.
Embodiment 3: the method for moulding fixture
Method among method in the present embodiment and the embodiment 1 is slightly different, and the base portion 4 that uses in the present embodiment is the polyester films that scribble polyethylene layer, and wherein polyethylene layer is as front surface 20.During beginning, this film has molecular orientation on polyethylene surface 20.The contact release surface is at first cleared up by the polyethylene face of polyester film.During whole working cycles, the temperature of polyester film remains below its contraction or softening temperature.
Embodiment 4: the method for moulding fixture
Utilize the method for second embodiment of the present invention, the drop that uses UV-Lacquer is as the particle that utilizes the moulding prefabricated protuberance of contact release surface of embodiment 1, UV-Lacquer wherein is exactly the cross-couplings lacquer of handling by UV, and UV wherein is exactly the ultraviolet ray irradiation.Use is called the lacquer of " Sollux D 1770GL0610 " from Herberts Mobellacke GmbH, is about 40 ° through the observed average contact angle that forms along the whole edge of prefabricated protuberance after about 10 seconds.
In the time of 20 ℃, utilize diluent that viscosity is set to proper state, measure in about 40 to 75 seconds scope with being coated with-4 glasss.Described lacquer can utilize nozzle or shower nozzle to spread to equably on the contact release surface with the form of about 200 microns drop.Need not heating and just can form contact angle.(can use the UV-lacquers of low smell) although price can be higher with similar surfaces energy.Follow-up by ultraviolet ray irradiation they will hardening.Base portion can be that to have a zero son directed and have the thermoplastic film of any suitable compound front surface fully, for example, and common polymer of the heat sealing adhesive of acrylic or articulamentum material.Base portion is laid on the release surface that has prefabricated protuberance; Can use heated air to soften base portion from the rear surface of base portion, the prefabricated protuberance that base portion is pressed to curing is cooled then, therefore just is fixed together suitably with prefabricated protuberance.After the cooling, base portion is removed, thus separating from release surface new moulding in conjunction with protuberance.
Embodiment 5: the method for moulding fixture
Referring to Fig. 5 a-5c.Utilize the method for second embodiment of the invention, as the base portion of the polyethylene film of use among the embodiment 1, present embodiment is to utilize particle that the front surface of polyethylene film has been carried out pre-alligatoring with the different of embodiment 1.The particle that is used for pre-alligatoring has been fixed on the front surface of base portion.The pre-alligatoring of front surface is to remain under 170 ℃ the temperature particle (Solvay " Eltex "---a kind of high density polyethylene (HDPE) with normal temperature at base portion, size is between the 315-500 micron, density polymer is 0.938, melt flow rate (MFR) is 2.6) be put on the front surface and finish, the density of distribution is 160/cm
2Between this method implementation period, especially during front surface and particle are fixing, keep the distortion of protuberance of pre-alligatoring not too big.Therefore prefabricated protuberance is fixed on the particle of pre-alligatoring then, has formed multilayer shown in Fig. 5 a-5c in conjunction with protuberance 31, and this protuberance can combine with thicker endless fabric.
Embodiment 6: the method for moulding fixture
Utilize the method for first embodiment of the invention, use the polyethylene film identical as the sheet base portion with embodiment 1.Use high-density polyethylene powder particle (the DU Pont polymer beads of Switzerland S.A.NY6454-F is made through pulverizing and/or screening by the reactant powder).The maximum nominal size of these powder particles is 200 microns, and most particle is between the 90-140 micron; Fusing point is 131 ℃; Melt flow rate (MFR) is per 10 minutes 8 grams.The surface of polymer beads can approximately be 31mJ/m
2Base portion is maintained under about 170 ℃ temperature, particle is optionally spread on the base portion of heating by scattering the unit, after one suitable period, the base portion that obtains alligatoring is cooled, the described time is wanted long enough so that particle is effectively fixed, will enough lack so that protuberance has tangible undercut shape simultaneously, the attached end of protuberance is just little than their top like this.Therefore, these particles have just been made protuberance, and typically, a protuberance comprises a particle.A kind of clamping part can be the polytetrafluoroethylene (PTFE) conveyer belt, is used as the juxtaposition metamorphose surface.Base portion cools off by the metal cooling surface of contact from its rear surface, it is solid-state keeping the attached end of protuberance, when the described clamping part of protuberance process, the end of the protuberance on the base front surface is by contacting the state that is heated to fusing with the juxtaposition metamorphose surface simultaneously.Described polytetrafluoroethylene (PTFE) conveyer belt keeps about 160 ℃ temperature.The pressure and the linear velocity of described clamping part are provided with in one way, and in this mode, the protuberance after the distortion is driven plain, and have the chimb that stretches out the attached end on the base portion on all directions on their flat-top.
In this process, described contact approximately can continue 0.2-10 second, and this depends on the clamping parameter, after described contact is finished, the protuberance surface of distortion is cooled off and clamping part is opened.Therefore the border of the flat top surface after the distortion is defined by the edge, and the angle at described edge depends on the acute angle contact angle substantially.By these processes, just has tangible undercutting at the beginning protuberance, just close base front surface is local narrow, and their top is driven plain, just has a kind of typical shape in conjunction with protuberance like this, being exactly the front surface from the flat top surface to the base portion, from each side, all is strict tapers in conjunction with protuberance.In beginning, had suitable dense degree between the particle that scatters so that in the terminal distortion of being heated of protuberance, some in conjunction with protuberance can be adjacent with other the protuberance that combines combine, just they fuse together on contact-making surface mutually, formed elongate a little in conjunction with protuberance.
Embodiment 7: fixture.Referring to accompanying drawing
Fixture 14 in the present embodiment is to be made by the method for embodiment 1.It is a kind of being used for that approach or ultra-thin, and for example the non-textile web in the diaper 10 carries out the fixture 14 of combination.The major part of fixture 14 accurately is made of a polymer beads in conjunction with protuberance 13, also has " merging protuberance " 47 on this fixture, and this " merging protuberance " the 47th united mutually by at least two polymer beads and to be formed.Describedly comprise edge 12 in conjunction with protuberance 13, this edge 12 is positioned at the plane at flat-top 17 places and is used for defining the border of flat-top 17.The 12 lid shape surfaces 28 that join with flat-top 17 extend on the attached end 102 of the front surface 20 that is positioned at base portion 4 from edge 12 along the edge.What cover in the present embodiment that shape surface 27 and flat-top 17 determine is approximately average 59 ° of edge angles 2 of acute angle along whole edge 12.The edge angle 2 that is acute angle is by between upper surface 17 deformation phases being contact angle 7 decisions of acute angle basically.From each all side in conjunction with protuberance 13, whole lid shape surface 28 is strict domes, and the prefabricated protuberance 37 that will use in manufacture process is keeping the circle of lens shaped to drip shape.In addition, each sees on all sides that in conjunction with protuberance 13 front surface 20 from flat-top 17 to base portion is strict tapers.The general thickness of fixture approximately is the 140-190 micron, approximately is 460/cm in conjunction with the quantity of protuberance 13
2Caused touching quite level and smooth fixture 14 in conjunction with the dense degree of protuberance together with their flat-top 17.We have found that, adult only armrest touch almost can not, in fact can not distinguish its front and level and smooth back usually at all.This may be owing to the relatively little attached end area in conjunction with protuberance 13, recognizes that fixture 14 should be the same softness of low-density polyethylene film of about 90-100 micron with thickness.
Embodiment 8: fixture.Referring to accompanying drawing
Fixture 14 in the present embodiment is different with embodiment's 7, and the fixture 14 in the present embodiment is by thermoplastic elastomer based portion 4 (thermoplastic elastomer thin film of a kind of Tredegar of coming from CEX-802WR, 54g/m
2) make, this film looks like compound.This flexible fastening piece 14 is well suited for being used in diaper 10 and the wrap 48.
Embodiment 9: diaper.Referring to accompanying drawing 8
Disposable infant diaper 10 comprises non-weaving body side surface 5, and with body side surface 5 opposed outer surface 33, this outer surface 33 comprises about 20g/m
2Polypropylene spun-bonded non-woven fabric 32, this non-woven fabric 32 is layered in below a kind of permeable thin polymer film continuously.The end of the belt 49 of its left and right sides is fixed on the rear portion of the waistline 50 of diaper 10, comprises two corresponding protrusion retaining elements 27 on another end of unclamping of the belt 49 of the described left and right sides, so that diaper 10 is fixing around the clothes.Each protrusion retaining element 27 is exactly the fixture 14 among a slice embodiment 7, and each size of protruding retaining element is as follows: the width 51 on the direction vertical with waistline is 45mm, and on lead, just the length 52 on waistline 50 directions is 14mm.This diaper does not comprise and is used for and protrudes the independent annular bonding land 53 that retaining element 27 matches.But form the bonding land by the fabric 32 of described outer surface 33, can produce the separable effect that combines with the protrusion retaining element like this.Protruding the separable shearing with about 35N that combines between retaining element 27 in the non-woven fabric 32 of described outer surface 33 and each, is 5.56N/cm corresponding to concrete shear strength
2
Embodiment 10: wrap.Referring to accompanying drawing 9
Embodiment 11: the performance of comparing the fixture among the present invention with protrusion fixture of the prior art
Take the shearing fixed performance of the new mechanical fixed part among the embodiment 7, just maximum shear stress and a plurality of end of the year 2004, the mechanical fixed part in can available diaper on Hungary market was compared.The diaper of using is: Huggies Super-Flex (corresponding to hereinafter " H "); Pampers Total Care (corresponding to " P " hereinafter); And Libero Discovery (corresponding to " L " hereinafter), these diapers have all in the bonding land that special annular is just being worn and non-weaving outer surface.The maximum shear force measurement of these commercially availabie diapers is the joints by pulling down described band and described joint is cut into loose 20mm and in the shape of the long 14mm of lead.Utilize two-sided tape that described annular material is bonded on the aluminium sheet then.The shearing that utilizes finger pressure to apply an about 0.5kg simultaneously in vertical direction again is pressed in the corresponding protrusion fixture under every kind of situation on the annular material.Remove finger pressure then, the initial weight that utilizes the about 0.5kg that still exists simultaneously manually improves up to mechanical fixed part shear-type load to separate from annular material pulling on the thin slice continuously.Measure the described separation load when taking place as maximum shear, this maximum shear is listed in the following table.
In addition, to mechanical fixed part 27 of the present invention test with diaper in annular just wear, especially specialized designs is used in annular on the diaper and is just wearing and form contrast, below is some abbreviations: " NW ": the non-weaving diaper endless belt that a kind of improved low top is spunbond; " K ": the locking annular diaper that can available trade name from the market of German Koester be FT-800T-NC is just worn.Just wearing " K " is the diaper annular material of the prior art that can availablely be used for diaper from the market.
| Recessed ring-type element | Protrude fixture | Maximum shear stress (N) |
| Just wear " K " | Mechanical fixed |
37.2 |
| Just wear " NW " | The mechanical fixed |
30.9 |
| Diaper " H " just wears | Mechanical fixed |
16.7 16.3 |
| Diaper " P " just wears | Mechanical fixed |
27.8 17.0 |
| Diaper " L " just wears | Mechanical fixed |
Side band fracture 25.0 in 24.5 o'clock |
| The non-weaving back side of diaper " H " | Mechanical fixed |
6.9 16.3 |
| The non-weaving back side of diaper " P " | Mechanical fixed |
5.9 17.0 |
| The non-weaving back side of diaper " L " | Mechanical fixed |
19.3 16.7 |
In independent test, measurement is to use following program to finish for a long time.Prepare the specimen of the fixture of the wide embodiment 1 of the long 25mm of 100mm, and with the scraps of paper (utilizing two-sided tape to be stained with) and sealing tape it is reinforced at its back side.This specimen is used for determining adhering to the performance of the protrusion fixture of above-described embodiment 1 on the diaper that can buy on the market.By applying uniform finger pressure the 14mm end of the fixture material of test sample book is adhered on the back side of described annular material and non-weaving diaper recited above.The weight of 1.0kg is applied on another relative end of sample strip in vertical direction.All specimen still were in the state that adheres to after 24 hours.Some samples adhere to the lasting time and are higher than 24 hours greatly.The mechanical fixed part of being made by embodiment 5 utilizes positive endless belt " K " to carry out aforesaid long-time shearing test in addition, time remaining 90 days rather than above-mentioned 24 hours.
Embodiment 12: the method for moulding fixture.Referring to accompanying drawing 10
Utilize the method in the second embodiment of the invention, use the high density polyethylene (HDPE) particle as polymer beads 36, this particle can obtain from Rowak AG, and trade name is " RowalitN-1OO-680-200microns ".The nominal dimension scope of these polymer powders is 80-200 microns, and melt flow rate (MFR) is per 10 minutes 6-8 grams.The surface of polymer beads can approximately be 31mJ/m
2The sheet base portion 4 that uses is single layer polyethylene film sheets of a kind of 30 micron thickness, and this diaphragm is 30% first polyethylene and 70% second polyethylene mixture (blend).First polyethylene is a kind of high density bimodal polyethylene, can obtain from TVK rt, and trade name is Tipelin 8000F, has following parameter: melt flow rate (MFR) is per 10 minutes 6 grams (21.6kg/190 ℃), and density is 0.945-0.951g/cm
3, Shore D hardness 61.Second polyethylene is a kind of high density polyethylene (HDPE), can obtain from TVK rt, and trade name is TipelinFS 471-02 (2.16kg/190 a ℃), has following parameter: melt flow rate (MFR) is per 10 minutes 0.16 grams, and density is 0.947g/cm
3Initial base portion 4 have about 67% vertically be subjected to percent thermal shrinkage and about 42% laterally be subjected to percent thermal shrinkage.By be used in trade mark among the embodiment 1 be the contact release surface made of the polytetrafluoroethylene (PTFE)-coated glass fiber net of " Chemglas " as release surface 40, just it is the anlistatig of black.Embodiment is actually among the superincumbent embodiment 1 and carries out on the experiment line of describing.In this embodiment, except will on continuous lines, carrying out the preliminary treatment (annealing), contact release surface and will be heated to 140 ℃ at least film, for example shown in Figure 10 a, will be described below.
Present embodiment still can be realized fully by the continuous apparatus among Figure 10 a.In this device, discharge conveyer belt 39 and drive by two driving rolls 11.Release surface 40 maintenance levels.Locate at the driving rolls 11 on the position (being the right side of Fig. 1 a) that the upper track that discharges conveyer belt 39 begins to start (preferably after the heating), utilize the heater 22 release surface 40 heating.The base portion 4 that also be in the molecular orientation state this moment in the Xiao A hardness value be under the effect of 40 silica gel roller 41 with heating after veined (such as embossing) release surface 40 contact and be crushed on this release surface 40.In contact, base portion 4 is softened and is pressed in the lip-deep close grain of Chemglas release surface.Can prevent that like this base portion 4 from shrinking when discharging its molecular orientation.In this continuous preprocessing process, also can dispose in last working cycles the residue 8 that remaining polymer beads 36 may stay and these residues 8 are fused into and disappear in the front surface 20 of base portion 4 on contact release surface 40.Base portion 4 approximately is 3 seconds with the time that the release surface 40 of heat contacts.Base portion 4 is cooled off by hair-dryer 1 and separates with release surface 40 in separation portion 54 then.Preliminary treatment 57 have about 51% vertically be subjected to percent thermal shrinkage and about 19% laterally be subjected to percent thermal shrinkage, and the two reaches a balance.Film is in this removed and further handles at the experiment line from continuous lines.But, in continuous lines, preliminary treatment base portion 57 after the separation is introduced in the film buffer 59 that is positioned on the release conveyer belt 39 with the running route of w, this buffer 59 comprises a floating roller 60, be directed into then on the prefabricated protuberance 44 of moulding on the contact release surface, subsequently in 55 times operations of gas nozzle.Keep the longitudinal tension force that the preliminary treatment film of testing on the line platform has every cm width 1.67g, to keep level and smooth.In continuous lines, this tension force can be kept by the position of controlling floating roller 60 by the floating roller 60 of control.If floating roller 60 rises, that operating speed that just means the base portion film under the nozzle 55 is faster than the feed speed that is fed into the base portion film in the film buffer 59 in pretreatment section, and the fixture that just produces length in the vertical is shorter than the initial length of base portion 4 when beginning to make.This be since preliminary treatment base portion 57 be subjected to vertically that percent thermal shrinkage is too high to be caused.In this case, separation point position 54 can be moved to increase the pretreatment time of base portion 4 to the direction away from driving rolls 11 along discharging conveyer belt 39 surfaces.Long pretreatment time can discharge lower that more molecular orientation just can vertically be subjected to the remnants of pretreated base portion 57 like this that percent thermal shrinkage falls.Adjustment process for the excessive film that is fed into film buffer 59 is approximate opposite.This negative-feedback can be used for reducing the percent thermal shrinkage that is subjected to of pretreated base portion 57 with equilibrium valve in the dynamical feedback control system.Selectively, the temperature of the release surface in pretreatment section 40 also can also be used for dynamic adjusting system and reaches equilibrium valve.
In the position of scattering polymer beads 36, the temperature of horizontal release surface 40 is remained on about 100 ℃.This temperature will enough be hanged down to stop polymer beads 36 may to soften prematurely or melt in scattering unit 42, but enough height is beated after arriving on the release surface 40 to prevent polymer beads 36 again, and this is very important for polymer beads 36 being spread to equably on the contact release surface.So that can not polymer beads 36 is softening at least in part, that polymer beads 36 just has the trend of beating if not enough heat in polymer beads 36 zone of at first falling on the contact release surface 40, and what will cause scattering is inhomogeneous.On the tract of the distribution position on the continuous lines, need to contact release surface 40 and be heated to about 180 ℃ from below.Heating on the experiment line is to finish by the heating plate 24 that is positioned at contact release surface 40 belows, and heating plate is positioned at and discharges below the conveyer belt 39, although can also use the heating cabinet that is positioned at the top in continuous lines.On the experiment line, polymer beads 36 scatters equably by scattering unit 42, and averag density is about 340/cm
2, that corresponding is about 16g/m
2Polymer beads 36 is 30mm from scattering unit 42 approximately to the free-falling distance that contacts release surface 40.The bigger free-falling of polymer beads 36 may cause the distribution of particle inhomogeneous.Because the release surface 40 of heat and the distance of scattering between the unit 42 are smaller, need below the distribution sieve, hot baffle be set so scatter unit 42.This hot baffle is two-layer brass tube with the several rows of interlaced arrangement of orthogonal direction, and links to each other with cooling fluid, and what the cooling agent of present embodiment used is air, but water or other any suitable cooling fluids can be used.Heat-proof device also can be used in other polymer beads that need protection to prevent on its overheated position.So nearly all particle all is the prefabricated protuberance 37 that has formed each interval on contact release surface 40 spaced apart, has also formed corresponding end 46 simultaneously.Thereby the heat heating back that described particle is released on the surface 40 has become semi-liquid state.Contacted release surface after 40 last 30 seconds when polymer beads 36 spreads to, they have just formed prefabricated protuberance 37, and based on the observation by photo, these prefabricated protuberances 37 have approximately average 59 ° contact angle.When described particle be positioned at the contact release surface on the time, nearly all particle all keeps the space, but some particles in them with adjacent particle melt, formed " protuberance of merging ".To contact the release surface cooling then and hold it in about 70 ℃.This is very important for the protection to the edge angle of prefabricated protuberance 37 afterwards, and in continuous lines, is to realize by the aluminium sheet of temperature controlled well that is positioned at contact conveyer belt 39 belows to keeping of the temperature of cooled contact release surface.On this aspect, prefabricated protuberance 44 is cured and suits to contact with the front surface 20 of base portion 4 at least in part.Pretreated base portion 57 is laid on the prefabricated protuberance 37 that is positioned on the contact release surface 40.The front surface 20 of base portion 4 keeps the end 46 with prefabricated protuberance 37, the top contact of just semi-transparent specular molten drop through overcuring.At this moment, pretreated base portion 57 have about 51% vertically be subjected to percent thermal shrinkage and about 19% laterally be subjected to percent thermal shrinkage.Hot gas nozzle 55 is positioned at 10mm place on the rear surface 3 of base portion 4.The opening direction of nozzle 55 is arranged to intersect with the traffic direction 25 of base portion 4.The size of described opening is that the long 4mm of 300mm is wide.Keep when operation at base portion 4 on horizontal 25, the hot gas 21 that is ejected on the rear surface 3 of base portion 4 is near the air of 271 ℃ (measuring with thermal type galvanic couple formula temperature measurer the outlet of nozzle).10mm measures below said opening from the power of the air-flow of the opening of nozzle 55 ejection is that every centimetre of opening length 5.89 restrains.The speed of service of contact release surface remains on 4m/min.This enough can be heated to base portion 4 its shrinkage temperature and make it enough softening so that be pressed into and be fixed on the end 46 of prefabricated protuberance 37.Described terminal 46 partly are melted to suitable degree by heating to utilize heat to fix, and fusion just fixes.The free height of prefabricated protuberance is kept as the height in conjunction with protuberance, and contact angle 7 is also kept as edge angle 2 usually simultaneously.In continuous lines, all parts are then by hair-dryer 1 cooling, thereby base portion 4 recovers its initial flat shape.Base portion 4 is wound onto in continuous lines on the spool 38 then together with fixing separating and remove from contact release surface 40 then in conjunction with protuberance 13 on it.Have the top of pressing in conjunction with protuberance 13, and have the chimb 100 that stretches out from all directions of base portion 4, and determine that by edge 12 edge angle 2 at described edge 12 corresponds essentially to contact angle 7.In continuous lines, the cooled part 9 in the contact release surface 40 can be used in the next working cycles then.Utilize the fixture of this method manufacturing have 47% vertically be subjected to percent thermal shrinkage and 16% laterally be subjected to percent thermal shrinkage.This fixture further heat treatment reduces in conjunction with the distance between the protuberance 13.
Embodiment 13: the method for moulding fixture
Method among this method and the embodiment 12 is slightly different, and the A/F of the nozzle in this method is 3mm, and this nozzle and principal direction quadrature are positioned at 10mm place on the base portion rear surface.Temperature by the gas of this nozzle ejection is 600 ℃ (measuring at the nozzle place), and the power of the gas of the ejection that 10mm place measures below opening is that every centimetre of opening length 11.77 restrains.The pulling force that applies every cm width 1.67 grams on the base portion that is laid on the prefabricated protuberance top is to keep the level and smooth of base portion.Temperature when release surface arrives the nozzle below is 70 ℃.The linear velocity of the release surface of nozzle below approximately is 30m/min.Fixture after the moulding grows 5%. in the vertical than the base portion diaphragm of making this fixture
Embodiment 14: the performance of comparing the fixture among the present invention with protrusion fixture of the prior art
Take the shearing fixed performance of the new mechanical fixed part among the embodiment 13, just maximum shear stress and a plurality of end of the year 2004, the mechanical fixed part in can available diaper on Hungary market was compared.The diaper of using is the diaper described in the above embodiment 11.Described in above embodiment 11, measured maximum shear stress.
In addition, the mechanical fixed part among the embodiment 13 27 is tested just to wear the formation contrast with the diaper annular that as title specified in embodiment 11 is " NW " and " K ".
| Recessed ring-type element | Protrude fixture | Maximum shear stress (N) |
| Just wear " K " | Mechanical fixed |
45.1 |
| Just wear " NW " | Mechanical fixed |
39.5 |
| Diaper " H " just wears | Mechanical fixed |
16.7 26.2 |
| Diaper " P " just wears | Mechanical fixed |
27.8 29.7 |
| Diaper " L " just wears | Mechanical fixed |
Side band fracture 25.9 in 24.5 o'clock |
| The non-weaving back side of diaper " H " | Mechanical fixed |
6.9 17.6 |
| The non-weaving back side of diaper " P " | Mechanical fixed |
5.9 17.7 |
| The non-weaving back side of diaper " L " | Mechanical fixed |
19.3 14.1 |
Embodiment 15: the method for moulding fixture.Referring to accompanying drawing 10 and 11
Utilize the method in the second embodiment of the invention, use the high-density polyethylene powder particle as polymer beads 36, this particle can obtain from Rowak AG, and trade name is " Rowalit N-1OO-680-200microns ".The nominal dimension scope of these polymer powders is 80-200 microns, and melt flow rate (MFR) is per 10 minutes 6-8 grams.The surface of polymer beads can approximately be 31mJ/m
2The sheet base portion 4 that uses is single layer polyethylene film sheets of a kind of 30 micron thickness, and this diaphragm is 30% first polyethylene and 70% second polyethylene mixture (blend).First polyethylene is a kind of high density bimodal polyethylene, can obtain from TVK rt, and trade name is Tipelin 8000F, has following parameter: melt flow rate (MFR) is per 10 minutes 6 grams (21.6kg/190 ℃), and density is 0.945-0.951g/cm
3, Shore D hardness 61.Second polyethylene is a kind of high density polyethylene (HDPE), can obtain from TVK rt, and trade name is Tipelin FS 471-02, has following parameter: melt flow rate (MFR) is per 10 minutes 0.16 grams, and density is 0.947g/cm
3By be used in trade mark among the embodiment 1 be the contact release surface made of the polytetrafluoroethylene (PTFE)-coated glass fiber net of " Chemglas " as release surface 40, just it is the anlistatig of black.Discharging conveyer belt 39 is driven by two driving rolls 11.Between them, release surface 40 maintenance levels.As described in the embodiment 12, base portion 4 is carried out annealing in process.Temperature with horizontal release surface 40 on the position of scattering polymer beads 36 remains on about 100 ℃.On the tract that scatters the position, will contact release surface 40 and be heated to about 180 ℃.Heat is to provide by being positioned at the heating plate 24 that discharges conveyer belt 39 belows.Polymer beads 36 scatters by scattering unit 42.Polymer beads 36 highly is maintained at about 30mm from scattering unit 42 to the free-falling that contacts release surface 40.Almost each particle and other particles all are spaced apart, thereby have formed the prefabricated protuberance 37 from contact release surface 40 projectioies to corresponding terminal 46 space on contact release surface 40.The protuberance that is released the heat heating on the surface 40 keeps the state of fusing, just semi-liquid state.Arrive release surfaces after 40 last 30 seconds at polymer beads 36, just formed prefabricated protuberance, contact with release surface 40 along their edge 12 with acute angle contact angle 7.Arrive from described particle in the about 30 second time of release surface 40 beginnings, it is the contact angle of acute angle that prefabricated protuberance has formed required.Nearly all particle all is to keep the space, but some particles in them with adjacent particle fusion, formed " protuberance of merging ".Release surface 40 is cooled and its temperature is remained on about 72 ℃ then.Discharge conveyer belt 39 below be provided with and control the aluminium sheet 58 of temperature well.Prefabricated protuberance 44 curing are contacted them with suitable with the front surface 20 of base portion 4.Pretreated base portion 57 is laid on the release surface 40 that has prefabricated protuberance 37.The front surface 20 of base portion 4 and the end of prefabricated protuberance 37, the top contact of the molten drop of just semi-transparent specular curing.Hot gas nozzle 55 is fixed on the 10mm place on the back side 3 of base portion 4.The direction that the opening of nozzle 55 is arranged to intersect.The size of described opening is that the long 4mm of 300mm is wide.When discharging conveyer belt 39 and base portion 4 and move on horizontal direction 25 together, the hot gas 21 that is ejected on the rear surface 3 of base portion 4 is air, and through measuring, temperature is 499 ℃.From the measured value of dynamic pressure 10mm below described opening of the air-flow of the opening of nozzle 55 ejection is that every centimetre of opening length 2.32 restrains.The speed that discharges conveyer belt remains on 2.9m/min.A kind of vacuum plant 105 (rectangular cavity, 75cm is long, 5cm is wide, 4.6mm it is thick, has a long opening 107 of the high 50cm of 1.6mm, the end of this opening and this vacuum plant terminal adjacent) be connected to the air inlet of fan (the ELMO-G 2BH1 that comes from German Siemens Nash-Elmo), as shown in figure 11, this vacuum plant is positioned at the below of conveyer belt and apart from rounded forward edge edge 106 about 1-2mm of the aluminium sheet 58 of tract.The adjustment of vacuum is to become smoothly and do not have gauffer substantially by vacuum chamber is moved up to release surface 40 with respect to aluminium sheet.Described terminal 46 also is to be fused to suitable degree by heating, therefore is to utilize heating, and just Rong He method is fixed to end on the base portion.By hair-dryer 1 cooling, base portion 4 recovers its initial flat shape to all parts whereby then.Base portion 4 is wound onto on the spool 38 then together with fixing separating and remove from contact release surface 40 then in conjunction with protuberance 13 on it.Have the top of pressing in conjunction with protuberance 13 after the moulding, and stretch out from all directions of base portion 4, the border around it determines that by edge 12 average angle 2 at edge 12 corresponds essentially to average contact angle 7.
Claims (85)
1. one kind is used for the fixture (14) that combines with endless fabric, described fixture (14) comprises the have front surface base portion (4) of (20), on described front surface (20), be provided with many in conjunction with protuberance (13), at least some are described to have the upper surface end in conjunction with protuberance, wherein said at least some formed edge angle in conjunction with protuberance upper surface end, and attached end and extend to the lid shape surface (28) of described attached end from described upper surface end edge around described protuberance; At least one outline line of the side view on the described lid shape surface from top surface edge to described attached end is strict dome.
2. one kind is used for the fixture (14) that combines with endless fabric, described fixture (14) comprises the have front surface sheet base portion (4) of (20), on described front surface (20), be provided with many random distribution in conjunction with protuberance (13), at least some are described to have upper surface end and attached end in conjunction with protuberance, wherein at least some in conjunction with in the protuberance at least some adjacent in conjunction with protuberance along adjacent lateral edge merge formed merge in conjunction with protuberance.
3. one kind is used for the fixture (14) that combines with endless fabric, described fixture (14) comprises the have front surface sheet base portion (4) of (20), on described front surface (20), be provided with many in conjunction with protuberance (13), at least some are described to have upper surface end and attached end in conjunction with protuberance, described attached end is fused on the described front surface of described base portion, and described upper surface has formed one at least in part round the edge of described protuberance.
4. fixture (14) of combining with endless fabric of being used for according to claim 1, any combination of 2 and/or 3.
5. claim 1, the 2 or 4 described fixtures (14) that combine with endless fabric of being used for wherein saidly are fixed on the described base portion in conjunction with protuberance.
6. claim 1, the 2 or 4 described fixtures (14) that combine with endless fabric of being used for are wherein saidly formed by the particle that is fused on the described base portion in conjunction with protuberance.
Any aforementioned claim be used for the fixture (14) that combines with endless fabric, wherein whole lid shape surface is strict dome.
Any aforementioned claim be used for the fixture (14) that combines with endless fabric, wherein whole lid shape surface is being lentiform in shape.
Any aforementioned claim be used for the fixture (14) that combines with endless fabric, the shape on wherein said lid shape surface is cup-shaped basically.
Any aforementioned claim be used for the fixture (14) that combines with endless fabric, wherein said at least some formed fully around described edge in conjunction with the protuberance upper surface in conjunction with protuberance.
11. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some be non-directional at least basically on described upper surface in conjunction with protuberance.
12. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some be non-directional basically in conjunction with protuberance.
13. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, the area of wherein said attached end is less than the area of described upper surface.
14. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some upper surface ends in conjunction with protuberance are flat basically.
15. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some upper surface ends in conjunction with protuberance are configured.
16. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some formed 10 °-85 ° edge angle in conjunction with protuberance.
17. claim 16 is described to be used for the fixture (14) that combines with endless fabric, wherein said at least some form edge angles of 30 °-80 ° in conjunction with protuberance.
18. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some at random be distributed on the described front surface of described base portion in conjunction with protuberance.
19. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some have arbitrarily size and/or shape in conjunction with protuberance.
20. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some on the edge, have small curvature radius in conjunction with protuberance.
21. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some be to form in conjunction with protuberance by first kind of material, and the described front surface of described base portion is formed by second kind of different with described first kind of material on some performances materials.
22. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some first kind of materials in conjunction with protuberance are the polymer that are different from the described second kind of material that forms the described front surface of described base portion.
23. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some form by thermoplastic polymer in conjunction with protuberance.
24. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said base portion is a thin polymer film.
Be used for the fixture (14) that combines with endless fabric 25. claim 24 is described, wherein said base portion is a multilayer polymer film.
26. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said base portion is through alligatoring.
Be used for the fixture (14) that combines with endless fabric 27. claim 26 is described, wherein said base portion carries out alligatoring by the particle that is fixed on the base portion.
Be used for the fixture (14) that combines with endless fabric 28. claim 26 is described, wherein said base portion carries out alligatoring by embossing.
29. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, the thickness of wherein said base portion is the 5-100 micron.
30. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said fixture base portion is a non-woven fabric.
31. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said base portion be heated contractile.
Be used for the fixture (14) that combines with endless fabric 32. claim 31 is described, wherein said base portion has at least 1% and is subjected to percent thermal shrinkage on machine direction.
33. having in the horizontal, the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said base portion be lower than 50% the percent thermal shrinkage that is subjected to.
34. the fixture (14) that being used for described in any claim 31-33 combines with endless fabric, wherein said base portion laterally has the percent thermal shrinkage that is subjected to that is subjected to percent thermal shrinkage that is lower than on machine direction.
35. the fixture (14) that being used for of any aforementioned claim combines with endless fabric is wherein saidly formed by at least two kinds of different particles in conjunction with protuberance.
36. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, some of them particle be attached to formed on other the particle multilayer in conjunction with protuberance.
37. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some form in conjunction with the polymer of protuberance by rigidity.
38. any described fixture (14) that combines with endless fabric of being used for of claim 1 and 3-37, what wherein at least some were adjacent merges along adjacent lateral edge in conjunction with protuberance, formed merge in conjunction with protuberance.
39. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some do not have stem in conjunction with protuberance.
40. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some edges in conjunction with protuberance have the girth of edge line (12), and wherein the ratio of the average height of the mean value of this girth and described protuberance is 4.5-20.
41. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some upper surfaces in conjunction with protuberance have a zone, and described attached end has a zone that is attached on the described front surface of described base portion, and the ratio of the average bond area of wherein average upper surface area and described attached end is 1.56-25.
42. the fixture (14) that being used for of any aforementioned claim combines with endless fabric, wherein said at least some volumes in conjunction with protuberance are 0.0000335mm
3-33.5mm
3
43. one kind is used for the fixture (14) that combines with endless fabric, described fixture (14) is to utilize the method among any claim 44-72 or the 73-80 to obtain.
44. the method for a moulding fixture comprises:
Many suitable polymers particles are provided;
Base portion with front surface is provided;
Contact release surface with suitable surface energy is provided;
On described contact release surface, scatter described many polymer beads, thereby form the independently prefabricated protuberance that is positioned on the described contact release surface, and these prefabricated protuberances project on the corresponding end from described release surface;
Provide that to spread on the described contact release surface be the polymer beads with semi-fluid condition of suitable viscosity at least, with at least some described particles and the described one section time enough of release surface contact that contacts being transformed into prefabricated protuberance with engagement edge, described engagement edge be subjected to described polymer beads the surface can with the described surface that contacts release surface can influence;
The front surface of described base portion contacted with the described end of at least some prefabricated protuberances and fixing;
Remove described base portion, thereby the described prefabricated protuberance that will be fixed on the described base portion separates from described release surface; And
Thereby form from the described front surface of described base portion protrude in conjunction with protuberance.
45. the described method of claim 41, wherein said contact release surface is flat basically.
46. any described method of claim 44-45, wherein the whole polymer beads on described contact release surface is being that semi-liquid form provides at least.
47. any described method of claim 44-46, described polymer beads on the wherein said contact release surface keeps in touch one section time enough to form the top with the described release surface that contacts, and described top has the edge of acute angle angle and comprises and will stretch out the chimb of described base portion at least in part.
48. any described method of claim 44-47, wherein at least some independently prefabricated protuberances are that each protuberance accurately comprises a polymer beads.
49. any described method of claim 44-48, wherein at least some described prefabricated protuberances have 30 °-80 ° acute angle contact angle.
50. any described method of claim 44-49, wherein at least some have a kind of shape in conjunction with protuberance, and at least some have formed the lid shape surface that centers on the edge angle and the attached end of described protuberance and extend to described attached end from described upper surface end edge in this shape in conjunction with protuberance upper surface end; At least one outline line of the side view on the described lid shape surface (28) from top surface edge to described attached end is strict dome.
51. any described method of claim 44-50, wherein during described prefabricated protuberance formed contact angle, the prefabricated protuberance that some prefabricated protuberances are adjacent with other combined.
52. any described method of claim 44-51, wherein said polymer beads is formed by the thermoplastic polymer with first surface energy; And be heated to by temperature that to make it become what have appropriate viscosity on the softening temperature be semi-liquid state at least with described polymer beads.
53. the described method of claim 52, the surface of wherein said contact release surface can be less than described first surface energy and 60mJ/m
2Sum.
54. the described method of claim 52, the surface of wherein said contact release surface can be less than described first surface energy.
55. any described method of claim 52-54, the surface of wherein said contact release surface can be greater than described first surface energy and 23mJ/m
2Poor.
56. any described method of claim 44-55, wherein
Sheet base portion with thermoplastic front surface and relative rear surface is provided; And
Fixedly comprising of the described front surface of described base portion and at least some described prefabricated protuberances is fixing by what fuse.
57. the described method of claim 56, wherein polymer beads is to be formed by the thermoplastic polymer of melt flow rate (MFR) between 1-90g/10min.
58. any described method of claim 56-57, wherein said fixedly comprising by fusion, at the described front surface of described base portion and the described terminal period of contact of at least some described prefabricated protuberances, utilize a kind of gas to contact with the described rear surface of described base portion, the temperature of described gas is higher than the softening temperature of at least one described prefabricated protuberance or the described front surface of described base portion, thereby described base portion is heated; And increase described end that base portion after thereby gas pressure on the described rear surface of the base portion after the described heating makes it surpass gas pressure on the described front surface that acts on described base portion and will heat presses at least some described prefabricated protuberances to strengthen the fusion of the terminal described front surface with described base portion of described prefabricated protuberance.
59. the described method of claim 58, wherein
One or more gas nozzles that are suitable for spraying heated air are provided; And
When described base portion keeps run duration on first direction, the described rear surface of described base portion contacts with the heated air that sprays from one or more gas nozzles, and described first direction is positioned at the plane of described sheet base portion substantially about described one or more gas nozzles.
60. any described method of claim 56-59, wherein said fusion comprises that the temperature with base portion is heated to being subjected on the heat shrink temperature of it.
61. any described method of claim 44-60, wherein said base portion have at least 1% on machine direction, be subjected to percent thermal shrinkage, just vertically be subjected to percent thermal shrinkage.
62. any described method of claim 44-61, wherein said base portion are subjected to percent thermal shrinkage on the direction vertical with its length direction, just laterally to be subjected to percent thermal shrinkage be zero or be not zero but less than the described percent thermal shrinkage that vertically is subjected to.
63. the described method of claim 62, the described percent thermal shrinkage that laterally is subjected to of wherein said base portion is less than 50%.
64. any described method of claim 62-63, the wherein said percent thermal shrinkage at least 1% that laterally is subjected to.
65. as any described method of claim 44-64, wherein the sheet length of the fixture after the moulding is greater than 80% of the length of the described base portion before the moulding fixture, and less than 120% of the described length of the described base portion before the moulding fixture.
66. any described method of claim 44-65, wherein being shaped has at least 1% the fixture that vertically is subjected to percent thermal shrinkage.
67. the described method of claim 66, wherein the described fixture after the moulding follow-up at least will be on described length direction heat shrink.
68. any described method of claim 44-67 wherein before the front surface of described base portion contacts with the described end of at least some prefabricated described protuberances and fixes, is carried out preliminary treatment to described base portion; The preliminary treatment of described base portion comprises:
The preliminary treatment release surface is provided;
Described preliminary treatment release surface is heated to above the suitable temperature of described softening temperature of the described front surface of described base portion;
The described front surface of described base portion contact with preliminary treatment release surface after the heating and exert pressure, thereby soften to the described front surface of the described base portion of major general;
Stop described base portion free shrink during, keep front surface and the heating after softening after the preliminary treatment release surface contact one suitable period, thereby be reduced to a value after reducing to the percent thermal shrinkage that vertically is subjected to of the described base portion of major general;
Described base portion is separated from described preliminary treatment release surface.
69. the described method of claim 68, wherein the percent thermal shrinkage that vertically is subjected to of the reduction that is obtained in the described base portion of preliminary treatment is an equilibrium valve, thereby the same length of the base portion before the length value of the fixture after the moulding and the preliminary treatment.
70. the described method of claim 69, wherein between the pre-treatment period of described base portion, described equilibrium valve is by regulating in following two factors one or two factors are all regulated continuously keep:
The temperature of described preliminary treatment release surface, and
The time that contact continues.
71. the described method of claim 70 wherein provides annular charge releasing belt as described contact release surface, described annular charge releasing belt has outside charge releasing belt surface and keeps moving of circulation along belt path.
72. the described method of claim 71, wherein said annular charge releasing belt has first on the primary importance of described belt path, has formed described preliminary treatment release surface; And being positioned at second portion on the second place of described belt path, described second portion displacement first forms described contact; And described base portion provides with the form of the base sheet that a kind of continuous and described band are synchronized with the movement, and contacts with the charge releasing belt surface of described outside on described first and second parts.
73. the method for a moulding fixture comprises:
Many suitable thermoplastic granulates are provided;
Base portion with front surface is provided;
Optionally scatter and be bonded in many polymer beads on the described base front surface, thereby form independently protuberance, these independently protuberance by their attached end attached to projecting to corresponding end on the described base front surface and from described base front surface;
Anamorphic attachment for cinemascope with contact surface is provided;
The described end of described protuberance contacted with the described contact surface of described anamorphic attachment for cinemascope so that described terminal distortion, thereby their form the chimb with edge of acute angle angle, thereby form in conjunction with protuberance.
74. the described method of claim 73, wherein said anamorphic attachment for cinemascope is heated to described end on the softening temperature.
75. the described method of claim 73-74 wherein is cooled to a temperature with described base portion, is firm so that described base front surface and the described protuberance end adjacent with described base front surface to be provided.
76. it is the surface on plane substantially that any described method of claim 73-75, the end after the wherein said heating are deformed what have the edge with formation, it is the edge angle (2) of acute angle that described edge has.
77. any described method of claim 73-76, wherein at least some independently protuberance be that each protuberance accurately comprises a polymer beads.
78. any described method of claim 73-77, wherein at least some protuberances have the edge of acute angle angle (2) between 30 °-80 °.
79. the described method of claim 73-78 wherein provide described particle, thereby at least some protuberances is formed by two or more particles arbitrarily.
80. the described method of claim 79, wherein said protuberance is to be formed by the base particle and second attaching particles, described base particle is to be made of first thermoplastic polymer, described attaching particles is to be made of second thermoplastic polymer, and the melt flow rate (MFR) of wherein said first thermoplastic polymer and/or Vicat softening point are than the described second thermoplastic polymer height.
81. a disposable diaper (10) comprises the outer surface and the side liner that are formed by non-woven fabric at least in part, at least one side part of described diaper is provided with the protrusion mechanical fixed part among any claim 1-43.
82. the described disposable diaper of claim 81, the non-woven fabric of wherein said outer surface are the low top fabrics of fixture 43 combinations identical with size, thereby apply 4.9N shearing at least on described outer surface.
83. the described disposable diaper of claim 82, the described mechanical fixed part of the described low top non-woven fabric combination of wherein identical described diaper outer surface with the formation size, thereby on described outer surface, apply 9.8N shearing at least.
84. any described disposable diaper of claim 82-83, wherein the described mechanical fixed part that combines with the described low top non-woven fabric that forms described diaper outer surface provides 2.5N/cm at least
2Shear strength give described outer surface.
85. the described disposable diaper of claim 84, wherein the described mechanical fixed part that combines with the described low top non-woven fabric that forms described diaper outer surface provides 3.5N/cm at least
2Shear strength give described outer surface.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU0500291A HUP0500291A2 (en) | 2005-03-11 | 2005-03-11 | Fasteners, methods for making fasteners and use of fasteners in products |
| HUP0500291 | 2005-03-11 | ||
| HUP0500970 | 2005-10-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101175421A true CN101175421A (en) | 2008-05-07 |
| CN100551288C CN100551288C (en) | 2009-10-21 |
Family
ID=89985868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006800162705A Expired - Fee Related CN100551288C (en) | 2005-03-11 | 2006-03-09 | The manufacture method of fixture |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100551288C (en) |
| HU (1) | HUP0500291A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104661552A (en) * | 2012-06-26 | 2015-05-27 | 3M创新有限公司 | Method for manufacturing fasteners and precursor webs, a fastener and a precursor web |
| CN109689339A (en) * | 2016-05-26 | 2019-04-26 | 斯塔林格有限责任公司 | Anti-skidding flexible material and its manufacturing method and purposes |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101775449B1 (en) * | 2013-09-18 | 2017-09-06 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | Articles having a multilayer structure including undercut features interlocked with an adhesive, and methods of making same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3312583A (en) * | 1963-10-02 | 1967-04-04 | James J Rochlis | Apertured and staggered molded pile product |
| US3550837A (en) * | 1969-04-14 | 1970-12-29 | American Velcro Inc | Releasable closure fastening means |
| JP2563369Y2 (en) * | 1992-09-21 | 1998-02-18 | ワイケイケイ株式会社 | Warp knit base fabric for hook-and-loop fastener |
| CN1125410A (en) * | 1993-06-11 | 1996-06-26 | 明尼苏达矿产制造公司 | Laser machined replication tooling |
| SE501513C2 (en) * | 1993-06-14 | 1995-03-06 | Moelnlycke Ab | Hook and loop type connection - has hook layer with protrusions made of plastics as is support from which protrusion extends outwardly |
| US5983467A (en) * | 1996-12-30 | 1999-11-16 | Duffy; Leonard A. | Interlocking device |
| EP1227741B1 (en) * | 1999-11-09 | 2005-09-07 | Jozsef Mandzsu, Sr. | Method and apparatus for producing the male component of a separable fastener, the product produced in this manner and the system containing this product |
-
2005
- 2005-03-11 HU HU0500291A patent/HUP0500291A2/en unknown
-
2006
- 2006-03-09 CN CNB2006800162705A patent/CN100551288C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104661552A (en) * | 2012-06-26 | 2015-05-27 | 3M创新有限公司 | Method for manufacturing fasteners and precursor webs, a fastener and a precursor web |
| CN104661552B (en) * | 2012-06-26 | 2018-06-05 | 3M创新有限公司 | Manufacture method, fastener and the precursor web of fastener and precursor web |
| CN109689339A (en) * | 2016-05-26 | 2019-04-26 | 斯塔林格有限责任公司 | Anti-skidding flexible material and its manufacturing method and purposes |
| CN109689339B (en) * | 2016-05-26 | 2021-11-16 | 斯塔林格有限责任公司 | Anti-skid flexible material and manufacturing method and application thereof |
| TWI781103B (en) * | 2016-05-26 | 2022-10-21 | 奧地利商史太林格有限公司 | Antislip flexible materials and methods for their making and use |
Also Published As
| Publication number | Publication date |
|---|---|
| HUP0500291A2 (en) | 2006-11-28 |
| HU0500291D0 (en) | 2005-05-30 |
| CN100551288C (en) | 2009-10-21 |
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