CN101041922A - Method for manufacturing a felt sheet and felt sheet - Google Patents
Method for manufacturing a felt sheet and felt sheet Download PDFInfo
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- CN101041922A CN101041922A CNA200710088910XA CN200710088910A CN101041922A CN 101041922 A CN101041922 A CN 101041922A CN A200710088910X A CNA200710088910X A CN A200710088910XA CN 200710088910 A CN200710088910 A CN 200710088910A CN 101041922 A CN101041922 A CN 101041922A
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- yarn
- transverse yarns
- felt band
- vertical
- felt
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/08—Felts
- D21F7/083—Multi-layer felts
Abstract
The invention provides a method for producing a felt strip with a support member; wherein, the support member is inserted in to a fiber basal body and comprises at least two yarn layers, of which a yarn layer is a vertical yarn layer and the other yarn layer is a horizontal yarn layer, and the horizontal yarn is continuous on the whole width of the felt strip. For each vertical yarn layer, a first auxiliary supporting unit is made through a first auxiliary supporting net not wider than a finished felt strip, and the first auxiliary supporting net is spirally wound to the width corresponding to the width of the finished felt strip. For each horizontal yarn layer, a second supporting unit is made through a single supporting unit chain segment, and each single supporting unit chain segment comprises a second auxiliary supporting net and the yarn. The support unit chain segments are propped on each other one by one on the first auxiliary supporting unit in the vertical direction along the first auxiliary supporting unit, forming a second supporting unit. In order for making the felt strip, the felts of non-woven fabric layers are arranged at a side of the support element, forming the fiber basal body.
Description
Technical field
The present invention relates to a kind of method that is used to make felt band with support member, this support member embeds in the fibrous matrix, and form by at least two thread layers that layer is each other put layout, wherein at least one thread layers is embodied as vertical thread layers, this vertical thread layers is made up of the vertical yarn that extends with parallel mode, and at least one thread layers is embodied as the transverse yarns layer, this transverse yarns layer is made up of the transverse yarns of extending with parallel mode, and transverse yarns is rendered as on the whole width of this felt band continuous.The invention still further relates to this felt band, particularly as the felt band of paper machine felt.
Particularly in the papermaking machine belt field, the felt band in the fibrous matrix of the known support member embedding plastic optical fibre that will form by the weaving thermoplastic yarn.This papermaking machine belt is mainly as the press felt in the press section of paper machine.One or more nonwoven fabric layer acupuncture felts are made fibrous matrix to the mode on the support member in one or both sides.
In the felt band of these kinds, support member is not by woven fabric but be made up of at least two thread layers that layer is each other put layout.With parallel arrangement, and with woven and knitted fabric is different, these yarns are not engaged with each other the yarn that thread layers has each other in a determining deviation.Generally be arranged in such a way thread layers and make the yarns intersect of adjacent yarn layer, this mode is: a thread layers is embodied as vertical thread layers, this vertical thread layers has the vertical yarn that extends along the longitudinal direction of felt band, and a thread layers is embodied as the transverse yarns layer, and this transverse yarns layer has the transverse yarns of advancing in a lateral direction.
Background technology
At US4, disclosing in 781,967 with press felt for no reason is this felt band of form.In order to make this felt band, at first form assembly, these assemblies are made up of fibrage fully, perhaps are made up of the combination of fibrage and thread layers.About the manufacturing of these assemblies, the reader can be with reference to US3, and 613,258.These independent assemblies are not using binder yarn but partly use under the situation of extruded fibre material each other layer to put to lay and be connected to each other then.The mode that causes felt band for no reason by the connection of independent assembly is from US4, and 781,967 is not conspicuous.
Because use hot melt adhesive fiber or adhesive, so according to US4,781,967 press felt intensive relatively (comparison US6,425,98,5B1 first hurdle the 38th to 47 row) and firm.This has limited the availability of this felt band in paper machine.
EP 1 359 251 A1 disclose equally a kind ofly puts the support member that at least two thread layers of layout are formed by layer each other, and under this background, this support member also can be covered and be stamped fibrage.The manufacturing of this support member is carried out as follows: vertically yarn stretches between axle in parallel with each other at two, then transverse yarns is laid on vertical yarn.Transverse yarns is fused on vertical yarn by being heated to fusion temperature by (to be limited to the mode of the transverse yarns and the joining of vertical yarn) then.When yarn is equipped with the additive that promotes the absorption laser beam, can realize the heating of yarn by laser beam.
Although obtained the support member of high dimensionally stable with this method, prerequisite is that the vertical and horizontal yarn is adjacent to each other in smooth mode, and this needs specific yarn shape.This yarn shape is embedded into contradiction in the fibrous matrix with acupuncture felt by nonwoven fabric layer with this support member then.Therefore this support member only has limited applicability to the manufacturing of press felt, and expection mainly is used in the drying section of paper machine and is used under the situation that does not have fibrage or fibrous matrix.
EP 0 464 258 A1 have described and a kind ofly have been used to make the felt band particularly as the method for the felt band of press felt, wherein by the following true support member that makes up: width fully is wound up on two isolated rollers, up to the expected width that reaches support member with spiral or spiral fashion less than the supporting network bar of the expected width of support member.Simultaneously or cover support member with non-woven fabric strip in the same way subsequently, and the bondedfibre fabric net acupuncture felt that will form like this is to this support member.Thereby being pruned then, the angled side edge of the felt band of constructing in this mode produces the straight sides edge that extends along machine direction.
Adopt the mode of this manufacturing support member, vertically yarn is because winding process and with respect to the angled extension of the longitudinal direction of felt band, and do not obtain continuous transverse yarns, thereby the transverse strength of felt band is not very high.In order to obtain transverse strength preferably, proposed the edge of supporting network bar by for example sewing up be connected to each other (US5,360,656).Under the background of the support member that produces by thread layers, according to EP 0 947 623 A1, be connected to each other by the edge of the following fact with the supporting network bar: the transverse yarns of transverse yarns layer is engaged with each other in these edges, and connect yarn and be laid on these edges, and be soldered on the part that is bonded with each other of transverse yarns.Yet the shortcoming of Cun Zaiing is like this: in the zone at these edges, because the difference of yarn arranges and density, produced and have and the character of other surperficial different in kind of felt band, particularly lower infiltrative.This can cause the marking on the paper.
In order to remedy this shortcoming, in EP 1 209 283 A1, propose: the edge of implementing the supporting network bar in the mode of complications with in succession projection and recess, and, make these these recesses of protruding complete filling so that modes that these projectioies are bonded with each other with recess are adjacent to each other the supporting network bar.For example sewn seams or adhesive tape connect these edges by jockey then.Yet, the variation of character in the zone at the edge that is bonded with each other of this felt band that also causes completing.
Summary of the invention
The objective of the invention is to make a kind of method that is used to make felt band to use with support member, this support member is constructed by the vertical and horizontal thread layers, and be embedded in the fibrous matrix, adopt this method, can make the felt band in simple and therefore economic mode, and the felt band can manufacturedly there be high transverse strength and consistent character on its whole width.
According to the present invention, realize this purpose by a kind of method, this method has following at least method step:
A) for each vertical thread layers, following manufacturing first supporting component:
Aa) to make the first supplemental support net than the little width of width of completion felt band;
Ab) the first supplemental support net and yarn are put together, these yarns have the character that absorbs the laser energy, and can surperficially at least go up and reach at least in part fusion temperature by laser;
Ac) that these yarns are connected to first supplemental support is online for the effect by laser beam;
Ad) before applying yarn, during or afterwards, the first supplemental support net is wound up into a width in a spiral manner, prune after the lateral edges if be useful in, then this width is corresponding to making the required width of completion felt band;
B) for each transverse yarns layer, following manufacturing covers second supporting component of first supporting component fully:
Ba) at first make independent supporting component segment, these supporting component segments have the extension on a corresponding direction of the width required with making completion felt band;
Bb) these supporting component segments each all form by the second supplemental support net and the combination that is connected the online yarn of second supplemental support, these yarns have the character that absorbs the laser energy, and can surperficially at least go up and reach at least in part fusion temperature by laser;
Bc) by laser beam being acted on the connection that is created on these yarns between supplemental support net and the thread layers;
Bd) in order to make support belt, the supporting component segment abut against each other one by one along the longitudinal direction of first supporting component to be placed on first supporting component, makes second supporting component be formed with the yarn that the yarn traverse with first supporting component extends;
C) in order to make the felt band, with at least one nonwoven fabric layer acupuncture felt at least one side of supporting component, thereby form described fibrous matrix.
Therefore basic design of the present invention is by the following true support member of making: for each vertical thread layers, at least one the supplemental support net that has vertical yarn by screw winding, with one or more strands of productions supporting component for no reason, these vertical yarns are before, shone by laser simultaneously or subsequently; And the supporting component segment of will be equally forming by the supplemental support net with by the thread layers that laser shines is routed on this supporting component in the mode of sub-thread or multiply, and its paving mode makes yarn extend along horizontal direction; And last, with nonwoven fabric layer acupuncture felt on supporting component, so that connect supporting component and form fibrous matrix.If the supplemental support net is destroyed to a great extent thus, this is unharmful yet, because the supplemental support net only is used for during manufacturing operation yarn being remained on desired location.After with nonwoven fabric layer acupuncture felt, handle this point by fibrous matrix.
By means of this method, can utilize the advantage of winding process to make the felt band in simple and economical mode.Because these felt bands comprise continuous transverse yarns, so the transverse strength height of these felt bands.In addition, these felt bands are owing to the following fact merits attention: their character, particularly to permeability (this is very important for being used in the paper machine) homogeneous on their surface of water.
In one embodiment of the invention, regulation is used the yarn that contains additive, and it is absorbefacient to laser beam that this additive makes yarn.The example of such additive is NIR active material (that is, active material in the near infrared region), and they for example absorb in wavelength is the zone of 808nm, 940nm, 980nm or 1064nm.What for example, be suitable for this is carbon or do not have colour additive, for example the Lumogen IR of the Clearweld of Gentex or BASF.Additive preferably extends on the whole length of yarn.Additive can be incorporated in the yarn and/or is applied on the surface of yarn.When in conjunction with additive, part by weight should be 0.10% to 2.5%.
The supplemental support net can be made by the film that bondedfibre fabric and/or plastic web and/or preferred plastics are made, and this plastic web is for example from the known plastic web of EP 0 285 376 B, EP 0 307 182 A, WO 91/02642 or WO 92/17643.When using bondedfibre fabric, bondedfibre fabric should have from 20 to 150g/m
2Weight per unit area, from 30 to 60g/m
2Weight per unit area be enough to use the method according to this invention.Bondedfibre fabric also can contain the hot melt adhesive fiber.
The supplemental support net in principle should by absorb laser can fully be less than yarn or do not absorb laser can material make.As a rule, these materials are for example polyamide 4.6,6,6.6,6.10,6.12,11,12 and polyester, polypropylene etc. of common thermoplastic.Yarn itself also can be by the above-mentioned material manufacturing, from making yarn of great use with the same material that is used for the supplemental support net except additive.Similarly, like this equally for the nonwoven fabric layer of in the end wanting the acupuncture felt; Under the situation of multilayer, different fiber deniers can be set, preferably its set-up mode makes that the thinnest fiber denier finishes on the paper side surface of felt band.
According to the present invention, regulation is parallel to yarn the lateral edges of supplemental support net, preferably arranges equally spacedly in addition.As the result of the screw winding process of the first supplemental support net, in case the felt band completes, vertically yarn is not just along its longitudinal direction but tilt to extend with respect to its longitudinal direction a little.
Because first supporting component is made by the screw winding process, if therefore just enough with the supplemental support net that is used to reel from 0.2 to 1.5m width manufacturing.The second supplemental support Netcom often has from 0.5 to 6m, preferably from 3 to 6m with apply or the extension of yarn traverse to be applied.The supporting component segment can be made as follows: at first make the supplemental support net with big length and yarn is carried out laser and shine, the band that will constitute like this demarcates with the felt bandwidth corresponding intervals required with making completion felt band then.The manufacturing of second supporting network can be undertaken by method well known in the prior art.
The felt band manufactures endless form because first supporting component also has been for no reason, thereby and corresponding second supporting component produce equally for no reason assembly by supporting component segment assembling.
In order to ensure the dislocation that yarn does not take place during manufacture process, the first supplemental support net or supporting component segment preferably all should be connected to each other in their edge that adjoins each other.This can realize in every way.
On the one hand, can be so that described imbricate be connected to each other described edge then in the overlapping region.In practice, this realizes as follows: an edge in two edges be not coated with yarn from 10 to 50mm width, make this edge be adjacent the imbricate that is equipped with yarn of position then.These two edges then can be by connecting by means of hyperacoustic welding or by glueing joint.Also can utilize yarn itself, promptly with impacting yarn in the laser beam edge region again for this reason.But these edges also can be sewed up each other.The overlapping region thickening is inessential, because the supplemental support net is not very thick, particularly because destroy this thickening to a great extent after a while to the acupuncture felt of nonwoven fabric layer the time.
Thickening when docking each other, described edge does not take place.In this case, can connect described edge by the following fact: described edge is equipped with projection and recess in succession, complementary; And the placement that abuts against each other then of described edge makes described edge be bonded with each other with their projection and recess; And the projection with described joining edge is connected to each other at last.Can be by the following true connection that realizes projection: at least one one thread on described projection, preferred parallel extends in other yarn ground, and this at least one one thread (also can be the threads with the parallel mode extension) is connected on some or all projectioies.
With regard to method, there are two kinds of possibilities to can be used for this.In first kind of possibility, after being bonded with each other of described projection and described recess, at least one one thread is laid on the described projection, is connected to then on the described projection.But, alternative as this scheme, also can stipulate: even before being bonded with each other of described projection and recess (preferably with the placement of other yarn be connected simultaneously), at least one one thread is laid on the projection and recess at least one edge of the first supplemental support net and/or the second supplemental support net, and is connected on these projectioies; And the projection and recess be bonded with each other after, described at least one one thread is also connected to the described projection of described abutting edge.The connection of described at least one one thread can be limited in two edges of the first and/or second supplemental support net one before being bonded with each other, but also can be on two edges, preferably realize symmetrically, its implementation makes an one thread or threads extend to half of (with described longitudinal direction traverse) width of described projection at the most.
These projectioies are relative with the form of recess unrestricted.From apparent their example of EP 1 209 283 A1.Projection is preferably filled up the whole zone of recess.The connection of described at least one one thread can realize in many ways, but also preferably make for this purpose: use can absorb the yarn of laser energy, by laser beam yarn preferably is connected on all projectioies then.
Usefully, the yarn that on described edge, extends should with other yarn correspondence, promptly should be identical with other yarn.Yarn should be applied on the described edge with a some and a determining deviation in addition, make that the thread density in the zone at described edge does not depart from the thread density in other zone after projection and being bonded with each other of recess.Two measures all are used for realizing the character of homogeneous on whole felt belt surface.
In addition, theme of the present invention also has saws the felt band that method of the present invention is made by means of root, this felt band correspondingly comprises support member, this support member embeds in the fibrous matrix, and form by at least two thread layers that layer is each other put layout, transverse yarns is rendered as on the whole width of this felt band continuously, and these yarns have absorb laser can character, make them to go up and to reach fusion temperature at least in part in the surface at least by laser.According to the present invention, vertically yarn is with respect to the angled extension of the longitudinal direction of this felt band.This embodiment allows by means of winding process and therefore makes the felt band in simple and economical mode, and does not sacrifice the advantage that continuous transverse yarns reaches therefore high transverse strength.Because this support member is embedded in the fibrous matrix, so will not be connected to each other by the vertical and horizontal yarn.As long as with they each other layer to put laying just enough.
Vertically the obliquity of yarn is by the screw winding process realization when making the first vertical yarn assembly, and if applicable, can also realize by first vertical yarn assembly.Under this background, also have following possibility: it is online that the one-tenth multiply is wound on first supplemental support, preferred its winding method makes: vertically yarn is with very sharp keen angle of intersection, usefully make the angle with respect to the longitudinal direction of felt band have equal size, that is to say the profile of the vertical yarn of reflexed.
The character that can absorb the laser energy can realize by means of above-mentioned additive.Yarn may be embodied as monofilament, also can be bi-component yarn, in this bi-component yarn, has only a kind of component to contain additive in two kinds of components.Bi-component yarn preferably should comprise core and center on the sheath of this core that additive only is comprised in the sheath then.
As the alternative of monofilament, or and combination of monofilaments, the yarn of at least one thread layers also may be embodied as the multifilament of being made up of independent long filament.In this case, only some independent long filaments need be equipped with additive, and 50% ratio is just enough at the most.With laser beam impinge the time, even the result who is welded to one another as some independent long filaments, the multifilament hardening.
But the monofilament twist yarn of being made up of for example 2 to 12 monofilament also is feasible; Here, again, not all monofilament all needs to be equipped with additive.If it is just enough that maximum 50% monofilament has such additive.Here similarly, separately being welded to one another of monofilament makes the twist yarn hardening.
According to the present invention, also stipulate: be used alternatingly different yarns, for example replace monofilament and multifilament, monofilament and twist yarn or multifilament and twist yarn.But, for example also can by use by polyamide 6 and 6.10 alternately or by polyamide 6 and 6.12 alternately or the yarn of alternately making by polyamide 6 .6 and polyester be used alternatingly material.
Even when only having a vertical thread layers and a transverse yarns layer, also produce useful felt band.When support member is made up of at least two vertical thread layers and at least one transverse yarns layer, realized higher intensity.But also can be by a vertical thread layers and two inverse structure that the transverse yarns layer is formed.For the structural requirement of strictness, at least two vertical thread layers and at least two transverse yarns layers can be made up mutually.In all cases, of great use if vertical thread layers and transverse yarns layer replace respectively.
Extension that the transverse yarns layer does not need just and the longitudinal direction of felt band meets at right angles.Also exist with respect to the longitudinal direction of felt band to become from 75 ° to 125 °, be preferably the possibility that 80 ° to 100 ° angle is extended for transverse yarns.If this support member comprises at least two transverse yarns layers, then have the possibility that is arranged in such a way transverse yarns: the transverse yarns of the transverse yarns of a described transverse yarns layer and described another transverse yarns layer intersects, preferably intersect symmetrically, thereby the angle of the offset from vertical of the transverse yarns of the angle of the transverse yarns of a described transverse yarns layer and the offset from vertical of the longitudinal direction of felt band and described another transverse yarns layer and the longitudinal direction of felt band is identical, but has opposite symbol.
In order to obtain the character of homogeneous on whole surface, vertically yarn and/or transverse yarns should be equidistant each other.In that usefully vertically the distance between the yarn is identical with distance between the transverse yarns under this background.But also can be different.Equally, the yarn different can be used, but also identical yarn can be used with transverse yarns for vertical yarn.
Description of drawings
Reference example card embodiment is described in more detail the present invention in the accompanying drawings, wherein:
Fig. 1 is used to make the top view that is used for according to the equipment of first supporting component of felt band of the present invention;
Fig. 2 is the amplification vertical view of a part that is used to make the supplemental support net of this first supporting component;
Fig. 3 is the top view of the part of first supporting component, and wherein the supporting component segment is placed on this part, is used to make second supporting component;
Fig. 4 is through having the vertical section according to felt band of the present invention according to first and second supporting components of Fig. 1 to 3;
Fig. 5 is the top view according to the modification that does not have fibrous matrix of the support member of the felt band of Fig. 4;
Fig. 6 is the amplification vertical view of a part that is used to make the supplemental support net of this first supporting component.
The specific embodiment
Equipment 1 shown in Fig. 1 comprises two isolated rollers 2,3, and these two rollers have parallel rotation, and are driven on same direction.Supply shaft 4 is positioned at from lower roll 2 a distance, and reeling on this supply shaft 4 has the non-woven fabric strip 5 of low weight per unit area.When roller 2,3 was driven, non-woven fabric strip 5 was drawn back from supply shaft 4, and was wound up on these two rollers 2,3.Under this background, supply shaft 4 moves along the rotation that the direction of arrow A promptly is parallel to roller 2,3.Therefore, non-woven fabric strip 5 to the right gradually screw winding to roller 2,3.The yardstick that advances along the direction of arrow A of supply shaft 4 makes non-woven fabric strip 5 come to an end to ground connection each other.In order to ensure not disturbing supply shaft 4 corresponding settings obliquely.Continue winding process, up to producing the bondedfibre fabric band by non-woven fabric strip 5, the width of this bondedfibre fabric band is roughly corresponding to the width of the felt band (before heat setting) that will make by the bondedfibre fabric band.
In enlarged drawing shown in Figure 2, illustrate three part nets 6,7,8 of non-woven fabric strip 5.Obviously non-woven fabric strip 5 and therefore part net 6,7,8 on two longitudinal edges 9,10, all have complementary wave shape wave profile, thereby alternately produce the recess (being labeled as 12) of projection (being labeled as 11) and complementation as example as example.Under the situation of part net 6,7, projection 11 and recess 12 are bonded with each other in the mode of tooth group, and its protrusions 11 is filled up the whole zone of recess 12.Illustrating part net 8 from part net 7 a distance.In fact, the same with neighboring edge 9,10 situations of part net 6,7, the mode of part net 8 access arrangements 1 makes projection 11 be coupled in the same way in the recess 12.In addition, with part net 6 left the part net of adjacency be omitted.
As going back apparent (and not shown Fig. 1) from Fig. 2, the vertical yarn (being labeled as 13 as example) that extends along the longitudinal direction of non-woven fabric strip 5 is applied on the non-woven fabric strip 5 each other equally spacedly with parallel mode, but staying longitudinal edge 9,10 does not have yarn.Vertically yarn 13 is made by thermoplastic, and is equipped with additive, and this additive makes that 13 pairs of laser of vertical yarn can be absorbefacient.Effect by the laser beam that laterally moves around is welded to vertical yarn 13 on the non-woven fabric strip 5 with point mode.Even can before being wound up into non-woven fabric strip 5 on the supply shaft 4, in corresponding equipment, form this connection.In this case, come across and be not only non-woven fabric strip 5 on the supply shaft 4, but be equipped with the non-woven fabric strip 5 of vertical yarn 13.
As apparent from Fig. 2, other three vertical yarns (being labeled as 14 as example) are applied on the longitudinal edge 9,10 and are applied on the projection 11.Therefore they also can absorb the laser energy with vertically yarn 13 is identical.The same with vertical yarn 13, with laser beam vertical yarn 14 is heated to fusion temperature with point mode, thus vertical yarn 14 is connected on the projection 11.Thereby therefore be connected to each other with edge 9,10 and with part net 6,7,8.Vertical yarn 14 on the longitudinal edge 9,10 is equidistant each other, and equidistant with adjacent vertical yarn 13, thereby the thread density in the zone of longitudinal edge 9,10 is corresponding to the thread density in all the other zones.
In the example according to Fig. 2, after being applied to vertical yarn 13 between the longitudinal edge 9,10, carry out vertical yarn 14 is applied on the longitudinal edge 9,10.Do not select opposite order but do not get rid of, promptly at first realize the connection of part net 6,7,8, apply all the other vertical yarns 13 then by vertical yarn 14.This can carry out in the equipment that separates respectively, and these equipment cause the placement of vertical yarn 13,14 on the one hand, cause the connection by means of laser on the other hand.But,, also exist in the possibility of carrying out in the job step if this apparatus arrangement between roller 2,3, and is laid vertical yarn 13,14 simultaneously adjacent to each other and formalized.But in this case, these two rollers 2,3 must move on the contrary with the direction of arrow A, and supply shaft 4 must be held with sleep mode.
Fig. 3 is with approximate with the ratio of Fig. 1 but the abundant little ratio compared with Fig. 2 illustrates the part of first supporting component 16, by continuing to make this part from the conspicuous screw winding process of Fig. 1 up to the expected width before heat setting of felt band.Then supporting component segment 17,18,19 is placed into still on the supporting component on the equipment 1 16.These supporting component segments 17,18,19 are to construct with the non-woven fabric strip 5 identical modes that are used to make first supporting component 16.Each all is made up of these supporting component segments 17,18,19 bondedfibre fabric net 20,21,22, and transverse yarns (being labeled as 23,24,25 respectively as example) is applied on the bondedfibre fabric net 20,21,22.Vertical yarn 13,14 (omitting in Fig. 3) of transverse yarns 23,24,25 and supporting component 16 is identical, therefore also is connected in an identical manner on the bondedfibre fabric net 20,21,22 by laser beam. Transverse yarns 23,24,25 distance each other is all identical.Be positioned in transverse yarns 23,24,25 under the situation of bottommost supporting component segment 17,18,19 is routed on first supporting component 16, make transverse yarns 23,24,25 contact with vertical yarn 13,14.
Supporting component segment 17,18,19 comprises transverse edge 26 to 31, stays these transverse edges 26 to 31 and is not occupied by transverse yarns 23,24,25.These transverse edges 26 to 31 with longitudinal edge 9, the 10 identical modes of non-woven fabric strip 5 be equipped with in succession projection (being labeled as 32) as example and complementary recess (being labeled as 33) as example.The following transverse edge 28 of center support assembly segment 18 is placed against the last transverse edge 27 of lower supporting assembly segment 17, and its modes of emplacement makes its projection 32 and recess 33 be bonded with each other in the mode of tooth group.Three transverse yarns (being labeled as 34 as example) are laid on the projection 32 and are connected on the projection 32.Two supporting component segments 17,18 are connected to each other by these transverse yarns 34.Here can realize connecting by laser beam again.
Upper support assembly segment 19 is placed on first supporting component 16.In order to be connected to center support assembly segment 18, upper support assembly segment 19 also must be enough far away to center support assembly segment 18 displacement, thus the projection 32 on time transverse edge 30 with supporting component segment 17,18 between identical mode be coupled in the recess 33 on the last transverse edge 29 of center support assembly segment 18.Here similarly, can and be connected on the projection 32 other three transverse yarns placed in position.In this mode, other supporting component segment is laid in succession on the supporting component segment of corresponding front and connects the supporting component segment of this front respectively, up to 17,18,19 coverings of first supporting component, 16 complete supported assembly segments.Supporting component segment 17,18,19 forms second supporting component 35 then together.In principle, can construct the first and second other supporting components of any number thus.
Fig. 4 illustrates the combination of first supporting component 16 and second supporting component 35, first supporting component 16 has vertical yarn 13 and non-woven fabric strip 5, second supporting component 35 is made up of (here edge region 36,37 places supporting component segment 17,18,19 connected to one another, with different among Fig. 3, have only on two transverse yarns, 34 edge region 36,37 and extend).Nonwoven fabric layer 38,39 is positioned at the upside of second supporting component 35 and the downside of first supporting component 16.By the fact that unit shown in Figure 4 is transported to needing machine nonwoven fabric layer 38,39 is connected on these two supporting components 16,35.At this needing machine place, nonwoven fabric layer 38,39 is compressed and forms fibrous matrix, and partly is incorporated in the slit between the vertical and horizontal yarn 13,14,23,24,25,34.Under this background, non-woven fabric strip 5 and bondedfibre fabric net 20,21,22 are destroyed to a great extent.After leaving needing machine and heat setting subsequently, can obtain felt band for no reason, this for no reason the felt band have the support member of forming by vertical thread layers 41 and transverse yarns layer 42 40, can be used as the press felt in the paper machine for example.
Fig. 5 illustrates variant support member 43, and this variant support member 43 has vertical thread layers 44 and two transverse yarns layers 45,46.Vertically thread layers 44 is made up of the vertical yarn (being labeled as 47 as example) with uniform distances layout parallel to each other, and transverse yarns layer 45,46 each all make with the transverse yarns of parallel arrangement by the each interval certain distance.Only some transverse yarns 48,49 are illustrated out.Transverse yarns layer 45 is arranged in the upside of vertical thread layers 44, and transverse yarns layer 46 is arranged in the downside of vertical thread layers 44.The transverse yarns 48 of transverse yarns layer 45 becomes specific positive-angle ground to tilt to be placed on vertical yarn 47 with vertical direction.The transverse yarns 49 of transverse yarns layer 46 becomes to have same absolute with vertical direction but is that negative angle ground tilts to be placed on vertical yarn 47.
Obtain vertical thread layers 44 by making first supporting component in the above described manner.Make transverse yarns layer 45,46 by the following fact: the supporting component segment of correspondence is applied on the both sides of first supporting component (being adjacent to each other), and these supporting component segments are connected to each other thereby perhaps be applied on the side of supporting component.With be used for realizing making according to the identical mode of second supporting component 35 of the embodiment of Fig. 1 to 4.The inclination of transverse yarns 48,49 is placed and is realized by the following fact: the supporting component segment be tilted be placed on first supporting component before, the supporting component segment is carried out rectangular dimension processing.
Fig. 6 similarly illustrates with Fig. 2, just the manufacturing operation difference.Use identical Reference numeral for identical part.
As according under the situation of the embodiment of Fig. 2, segment map illustrates three part nets 6,7,8 of non-woven fabric strip 5.Part net 6,7,8 each all on two longitudinal edges 9,10, have the complementary wavy bulge 11 made by bondedfibre fabric and with the recess 12 of protruding 11 complementations.Under the situation of part net 6,7, projection 11 and recess 12 are bonded with each other in the mode of tooth group, and for part net 8 with respect to part net 7 and the describing love affairs condition also is not like this.
Thereby on the non-woven fabric strip 5 and on part net 6,7,8, the vertically parallel to each other and extension along the longitudinal direction equally spacedly of yarn (being labeled as 13) as example.Effect by the laser beam that laterally moves around is welded to vertical yarn 13 on the non-woven fabric strip 5 with point mode.
With according to the contrast of the process under the situation of the illustration embodiment of Fig. 2, and especially shown in part net 8, vertical yarn (being labeled as 14 as example) in addition preferably is applied on the non-woven fabric strip 5 with vertical yarn 13, and on projection 11 and recess 12, on two longitudinal edges 9,10, extend particularly.With with vertical yarn 13 is welded to mode identical on the non-woven fabric strip 5, the effect of these vertical yarns 14 by laser beam is welded on the projection 11.Vertically yarn 14 is equidistant each other, and equidistant from vertical yarn 13.On projection 11 and recess 12, all lay only two vertical yarns 14, thereby do not occupied with the maintenance over half of the extension of the projection 12 of the extension traverse of vertical yarn 13,14.
Even can before being wound up on the supply shaft 4, the non-woven fabric strip 5 that will be equipped with vertical yarn 13,14 in corresponding equipment, realize vertical yarn 13,14 is applied on the non-woven fabric strip 5.But also there is following possibility: only from supply shaft 4 unwinding non-woven fabric strip 5 time or apply vertical yarn 13,14 afterwards, then part net 6,7,8 is placed with abutting against each other, feasible projection 11 of its modes of emplacement and recess 12 are bonded with each other in the mode of tooth group.As from part net 6,7 example is apparent, vertically yarn 14 is additional by being bonded with each other fully of projection 11 and recess 12, its arbitrary way makes: the thread density in this zone equals the thread density of the vertical yarn 13 in all the other zones, therefore (the following fact is simply based on illustrative error: the part net 6 that has abut against each other and placed to produce uniformly vertical thread layers, 7 are only covered by three vertical yarns 14 in the projection 11 and the zone of recess 12, and altogether four vertical yarns 14 at two part nets 7 that also do not abut against each other and place, extend on 8 projection 11 and the recess 12).After being bonded with each other, vertical yarn on the longitudinal edge 9 14 is connected with projection 11 on the longitudinal edge 10 by the effect of laser beam.On the contrary, the vertical yarn on the longitudinal edge 10 14 is connected by the projection 11 of laser action with the longitudinal edge 9 of adjacency equally.
The aforesaid way of connection longitudinal edge 9,10 also can be applied to the connection according to the supporting component segment 17,18,19 of Fig. 3 accordingly.So supporting component segment 17,18,19 not only is equipped with transverse yarns 23,24,25, and the additional transverse yarns 34 (applying simultaneously with transverse yarns 23,24,25) of on projection 32 and recess 33, extending that is equipped with.Only they are each other in succession against placement and with aforementioned manner and part net 6,7,8 the same supporting component segments 17,18,19 connected to one another.
Claims (37)
1. one kind is used for making and has support member (40, the method of felt band 43), this support member embeds in the fibrous matrix, and put at least two thread layers (41 of layout by layer each other, 42,44,45) form, wherein at least one thread layers is embodied as vertical thread layers (41,44), this vertical thread layers (41,44) by the vertical yarn (13 that extends with parallel mode, 14,47) form, and at least one thread layers is embodied as transverse yarns layer (42,45,46), this transverse yarns layer (42,45,46) by the transverse yarns (23 of extending with parallel mode, 24,25,48,49) form, transverse yarns (23,24,25,48,49) be rendered as on the whole width of this felt band continuously
It is characterized in that following at least method step:
A) for each vertical thread layers (41,44), following manufacturing first supporting component (16):
Aa) to make the first supplemental support net (5) than the little width of width of completion felt band;
Ab) the first supplemental support net (5) and yarn (13,14) are put together, these yarns (13,14) have the character that absorbs the laser energy, and can surperficially at least go up and reach at least in part fusion temperature by laser;
Ac) effect by laser beam is connected to these yarns (13,14) on the first supplemental support net (5);
Ad) apply yarn (13,14) before, during or afterwards, the first supplemental support net (5) is wound up into a width in a spiral manner, prune after the lateral edges if be useful in, then this width is corresponding to making the required width of completion felt band;
B) for each transverse yarns layer (42,45,46), following manufacturing covers second supporting component (35) of first supporting component fully:
Ba) at first make independent supporting component segment (17,18,19), these supporting component segments have the extension on a corresponding direction of the width required with making completion felt band;
Bb) these supporting component segments (17,18,19) each all form by second supplemental support net (20,21,22) and the combination that is connected the yarn (23,24,25,48,49) on the second supplemental support net (20,21,22), these yarns have the character that absorbs the laser energy, and can surperficially at least go up and reach at least in part fusion temperature by laser;
Bc) by laser beam being acted on the connection that is created on these yarns (23,24,25,48,49) between the second supplemental support net (20,21,22) and these yarns (23,24,25,48,49);
Bd) in order to make support belt, supporting component segment (17,18,19) abut against each other one by one along the longitudinal direction of first supporting component (16) to be placed on first supporting component (16), makes second supporting component (35) be formed with the yarn (23,24,25,48,49) that yarn (13, the 14) traverse with first supporting component (16) extends;
C) in order to make the felt band, with at least one nonwoven fabric layer (38,39) acupuncture felt at least one side of supporting component (16,35), thereby form described fibrous matrix.
2. the method for claim 1, wherein use the described yarn (13,14,23,24,25,47,48,49) that contains additive, it is absorbefacient to described laser beam that this additive makes described yarn (13,14,23,24,25,47,48,49).
3. method as claimed in claim 1 or 2 wherein is used for described supplemental support net (5,20,21,22) with bondedfibre fabric and/or WEB and/or film.
4. as each described method in the claim 1 to 3, wherein bondedfibre fabric is manufactured has from 20 to 150g/m
2, preferably from 30 to 60g/m
2Weight per unit area.
5. method according to any one of claims 1 to 4, wherein said yarn (13,14,23,24,25,47,48,49) is arranged abreast with the parallel side edges so of described supplemental support net (5,20,21,22).
6. as each described method in the claim 1 to 5, wherein to make the described first supplemental support net (5) from 0.2 to 1.5m width.
7. as each described method in the claim 1 to 6, the wherein said second supplemental support net (20,21,22) is manufactured to be had from 0.5 to 6m and extension described yarn traverse.
8. as each described method in the claim 1 to 7, wherein said first supplemental support net (5) and/or described supporting component segment (17,18,19) are located to be connected to each other at their edge that adjoins each other (9,10,26 to 31).
9. method as claimed in claim 8 wherein makes described imbricate, and described edge is connected to each other in the overlapping region.
10. method as claimed in claim 9, wherein said edge are sewed up each other and/or are welded and/or glued joint.
11. method as claimed in claim 8, dock each other wherein said edge (9,10,26 to 31).
12. method as claimed in claim 11, wherein said edge (9,10,26 to 31) are equipped with projection (11,32) and recess (12,33) in succession, complementary; And described edge (9,10,26 to the 31) placement that abuts against each other makes described edge (9,10,26 to 31) be bonded with each other with their projection (11,32) and recess (12,33); And the projection (11,32) of described joining edge (9,10,26 to 31) is connected to each other.
13. method as claimed in claim 12, wherein after being bonded with each other of described projection (11,32) and recess (12,33), at least one one thread (14,34) is laid on the described projection (11,32), and described at least one one thread (14,34) is connected on the described projection (11,32).
14. method as claimed in claim 12, wherein before being bonded with each other of described projection (11,32) and recess (12,33), at least one one thread is laid on described projection (11,32) and the recess (12,33), and is connected to the described projection (11,32) at least one edge (9,10,26 to 31); And after being bonded with each other of described projection (11,32) and recess (12,33), described at least one one thread (14,34) is also connected to the described projection (11,32) of described abutting edge (9,10,26 to 31).
15. method as claimed in claim 14, wherein at least one one thread (14,34) are connected on the described projection (11,32) at two edges (9,10,26 to 31) of described supplemental support net (5,20,21,22).
16. as each described method in the claim 12 to 15, wherein the described yarn (14,34) that upward extend (9,10,26 to 31) at described edge is corresponding with other yarn (13,23,24,25,47,48,49).
17. as each described method in the claim 12 to 16, wherein said yarn (14,34) is applied on the described projection with a some and a determining deviation, make that after being bonded with each other the thread density in the zone of described edge (9,10,26 to 31) does not depart from the thread density in other zone.
18. one kind has support member (40,43) felt band, paper machine felt particularly, this support member embeds in the fibrous matrix, and put at least two thread layers (41 of layout by layer each other, 42,44,45,46) form, wherein at least one thread layers is embodied as vertical thread layers (41,44), this vertical thread layers (41,44) by the vertical yarn (13 that extends with parallel mode, 14,47) form, and at least one thread layers is embodied as transverse yarns layer (42,45,46), this transverse yarns layer (42,45,46) by the transverse yarns (23 of extending with parallel mode, 24,25,48,49) form, transverse yarns (23,24,25,48,49) be rendered as on the whole width of this felt band continuously, and these yarns (13,14,23,24,25,47,48,49) has the character that absorbs the laser energy, and can surperficially at least go up and reach at least in part fusion temperature by laser
Wherein vertical yarn (13,14,47) is with respect to the angled extension of the longitudinal direction of this felt band.
19. felt band as claimed in claim 18, wherein said vertical and horizontal yarn just each other layer put laying.
20. as claim 18 or 19 described felt bands, wherein said yarn (13,14,23,24,25,47,48,49) contains additive, it can be absorbefacient to laser that this additive makes described yarn (13,14,23,24,25,47,48,49).
21. as each described felt band in the claim 18 to 20, wherein the yarn (13,14,23,24,25,47,48,49) of at least one thread layers (41,42,44,45,46) is embodied as monofilament.
22. as each described felt band in the claim 18 to 21, wherein the yarn of at least one thread layers is embodied as the multifilament of being made up of independent long filament.
23. as each described felt band in the claim 18 to 22, wherein the yarn of at least one thread layers is embodied as the monofilament twist yarn of being made up of at least two monofilament.
24. as claim 20 and claim 21 or 22 described felt bands, wherein half independent long filament or monofilament are equipped with described additive at most.
25., wherein be used alternatingly different yarns as each described felt band in the claim 18 to 24.
26. wherein there is the alternately yarn of being made by polyamide 6 and 6.10 in felt band as claimed in claim 25, perhaps the alternately yarn of being made by polyamide 6 and 6.12, the perhaps alternately yarn of being made by polyamide 6 .6 and polyester.
27. as claim 25 or 26 described felt bands, wherein setting replaces monofilament and twist yarn, replaces twist yarn and multifilament or replaces monofilament and multifilament.
28. as each described felt band in the claim 18 to 27, wherein said support member is made up of at least two vertical thread layers and at least one transverse yarns layer.
29. as each described felt band in the claim 18 to 28, wherein said support member (43) is made up of at least one vertical thread layers and two transverse yarns layers (45,46) at least.
30. as each described felt band in the claim 18 to 29, wherein said support member is made up of at least two vertical thread layers and two transverse yarns layers.
31. as each described felt band in the claim 18 to 30, wherein vertically thread layers (44) and transverse yarns layer (45,46) replace.
32. as each described felt band in the claim 18 to 31, wherein said transverse yarns (23,24,25,48,49) with respect to the longitudinal direction of felt band become from 75 ° to 125 °, the angle that is preferably 80 ° to 100 ° extends.
33. felt band as claimed in claim 32, wherein said transverse yarns (23,24,25,48,49) becomes the angle than 90 ° big or little to extend with respect to the longitudinal direction of felt band.
34. as each described felt band in the claim 18 to 33, wherein said support member (43) comprises at least two transverse yarns layers (45,46), and the transverse yarns (48) of a transverse yarns layer (45) is crossing with the transverse yarns (49) of another transverse yarns layer (46).
35. felt band as claimed in claim 34, the transverse yarns (48) of a wherein said transverse yarns layer (45) is identical with the angle of the offset from vertical of the longitudinal direction of felt band with the transverse yarns (49) of the angle of the offset from vertical of the longitudinal direction of felt band and described another transverse yarns layer (46).
36. as each described felt band in the claim 18 to 35, wherein said vertical yarn (13,14,47) and/or described transverse yarns (23,24,25,48,49) are equidistant each other.
37. felt band as claimed in claim 36, the distance between wherein said vertical yarn (13,14,47) is identical with distance between the described transverse yarns (23,24,25,48,49).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200620004624 DE202006004624U1 (en) | 2006-03-21 | 2006-03-21 | Felt strip useful in papermaking machines comprises parallel and transverse threads that absorb laser radiation and can be melted by laser energy |
| DE202006004624.0 | 2006-03-21 | ||
| EP06005717.1 | 2006-03-21 | ||
| EP06005717 | 2006-03-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101041922A true CN101041922A (en) | 2007-09-26 |
| CN101041922B CN101041922B (en) | 2010-06-09 |
Family
ID=36763182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710088910XA Expired - Fee Related CN101041922B (en) | 2006-03-21 | 2007-03-21 | Method for manufacturing a felt sheet and felt sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101041922B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451291B (en) * | 2007-12-04 | 2011-03-30 | 亨巴赫有限公司&两合公司 | Method for manufacturing a machine felt and machine felt |
| CN102325939A (en) * | 2008-11-19 | 2012-01-18 | 沃依特专利有限责任公司 | Paper machine covering and method for the production thereof |
| CN103625996A (en) * | 2012-08-24 | 2014-03-12 | 上海金熊造纸网毯有限公司 | Base fabric manufacturing device |
| CN105473785A (en) * | 2013-08-23 | 2016-04-06 | 福伊特专利有限公司 | Fabric and method for producing same |
| CN114423894A (en) * | 2019-09-20 | 2022-04-29 | 富士胶片株式会社 | Nonwoven fabric, method for producing nonwoven fabric, and filter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781967A (en) * | 1987-10-07 | 1988-11-01 | The Draper Felt Company, Inc. | Papermaker press felt |
| SE468602B (en) * | 1990-12-17 | 1993-02-15 | Albany Int Corp | PRESS FILT AND WAY TO MANUFACTURE THEM |
| ES2170976T3 (en) * | 1998-04-02 | 2002-08-16 | Heimbach Gmbh Thomas Josef | TEXTILE BAND SPECIALLY USABLE AS A BASE FOR COATINGS OF PAPER MACHINES. |
| TW538175B (en) * | 1999-07-08 | 2003-06-21 | Heimbach Gmbh Thomas Josef | Transfer belt for a paper making machine |
| PT1162307E (en) * | 2000-06-06 | 2004-03-31 | Heimbach Gmbh Thomas Josef | SHARPENING BAND OF SHOES FOR PAPER MACHINES |
| DE50203497D1 (en) * | 2002-04-25 | 2005-08-04 | Heimbach Gmbh Thomas Josef | Drying screen and process for its production |
-
2007
- 2007-03-21 CN CN200710088910XA patent/CN101041922B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451291B (en) * | 2007-12-04 | 2011-03-30 | 亨巴赫有限公司&两合公司 | Method for manufacturing a machine felt and machine felt |
| CN102325939A (en) * | 2008-11-19 | 2012-01-18 | 沃依特专利有限责任公司 | Paper machine covering and method for the production thereof |
| CN103625996A (en) * | 2012-08-24 | 2014-03-12 | 上海金熊造纸网毯有限公司 | Base fabric manufacturing device |
| CN103625996B (en) * | 2012-08-24 | 2016-02-10 | 上海金熊造纸网毯有限公司 | Substrate fabric preparation facilities |
| CN105473785A (en) * | 2013-08-23 | 2016-04-06 | 福伊特专利有限公司 | Fabric and method for producing same |
| CN105473785B (en) * | 2013-08-23 | 2017-11-17 | 福伊特专利有限公司 | Taut net and the method for manufacturing the taut net |
| CN114423894A (en) * | 2019-09-20 | 2022-04-29 | 富士胶片株式会社 | Nonwoven fabric, method for producing nonwoven fabric, and filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101041922B (en) | 2010-06-09 |
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