CN108457118A

CN108457118A - The use of dry net, drying part and dry net in the drying part

Info

Publication number: CN108457118A
Application number: CN201810041453.7A
Authority: CN
Inventors: 弗朗西斯科·卡斯孔
Original assignee: Heimbach GmbH and Co KG
Current assignee: Heimbach GmbH and Co KG
Priority date: 2017-02-22
Filing date: 2018-01-16
Publication date: 2018-08-28
Anticipated expiration: 2038-01-16
Also published as: EP3366835A1; DE202017100990U1; PT3366835T; ES2719687T3; CN108457118B; EP3366835B1

Abstract

The present invention relates to a kind of dry nets, the use of drying part and dry net in the drying part, the dry net is suitable for using the drying part of paper machine, band be useful for reclining paper web determination paper side and machine side away from paper side, wherein, dry net has the fabric being made of lengthwise yarn (2 7) and horizontal yarn (10 21) or is made of the fabric, fabric includes at least two horizontal yarn layers being stacked, wherein, lengthwise yarn ties up horizontal yarn with the float structure of paper side and machine side, float structure interlocks in paper side and machine side, and fabric only has lengthwise yarn float structure in paper side and machine side, it overlaps at least two adjacent horizontal yarns respectively, and all lengthwise yarn float structures overlap the horizontal yarn of identical quantity.

Description

The use of dry net, drying part and dry net in the drying part

Technical field

The present invention relates to a kind of dry nets, and it is suitable for using in the drying part of paper machine.The present invention additionally relates to And the use of drying part and dry net in the drying part of paper machine equipped with this dry net of paper machine.

Background technology

Large-scale paper machine is seen along the direction that paper web passes through by molded component, press section usually by three so-called components Part and drying part are constituted.Molded component be used to construct the paper web being made of paper pulp and be used for the paper web that is consequently formed the One machinery draining.In extrusion parts, paper web is directed across between compression roller, and in compression roller, paper web bears high pressure, and Thus it is further drained by machinery.Then, paper web is fed to drying part, in drying part, drying of the paper web in heating It is guided on cylinder, paper web is by heat drain as a result,.

Paper web is directed across paper machine brings realization, paper web to stick on by the requirement being matched with to respective component It takes, and band is also used for paper web being transferred to next component from a component.So-called drying is installed in drying part Net is in particular designed as the dry fabric being made of warp yarn and weft threads.Dry net is for example obtained by 1 507 041B1 of EP It arrives.

Make every effort to reach in principle, the contact surface as big as possible for paper web is provided in the paper side of dry net, so as to So that paper web is pressed to drying cylinder as homogeneously as possible, and therefore utilizes good heat to transmit generation and the corresponding of paper web is uniformly added Heat and drying.In order to show the sheet contact of dry net, by paper machine clothes association (abbreviation PCA；Address：19, rue de La R é publique, 45000 Orleans, France) have developed so-called fiber fineness index (abbreviation FFI) (PCA standard classes, November, the 2009, the 15th edition, the 3A pages, number 15).FFI is calculated according to following formula：

Know each component part of the formula according to the text in the December, 2013 equally issued by paper machine clothes association Offer " standard measure (Approved Standard Measuring Methods) through inspection " realization.For thickness measure Predetermined parameter obtained from the paragraph C2 of page two, for determining contact surface and the predetermined parameter of its face share and the number of contact point The paragraph C11 measured from page 1 to 4 is obtained.

Dry net is obtained by 20 2,015 103 812 U1 of DE, which is characterized in that the FFI-MS of machine side and paper side The ratio of FFI-PS is at least 1.25 to 1, more preferably at least 1.5 to 1.In the contact surface share of percentage and/or per cm²Contact The quantity of point is significantly larger in machine side, thus obtains with relatively open and therefore easy cleaning paper side and machine side Dry net, because machine side provides significantly more wear-resisting amount (Abriebvolumen), machine side is characterized in that long Usage time.

Previously known dry net confirms to be suitable in principle.However there is the demand to the dry net of alternative in addition.

Invention content

Therefore the task of the present invention is the dry net for illustrating to design as an alternative, can realize uniform drying, and its It is characterized in that service life as long as possible.

The task is solved according to the present invention by dry net, it is suitable for using in the drying part of paper machine, is carried The paper side of determination for the paper web that reclines and the machine side away from paper side, wherein dry net has by lengthwise yarn and horizontal yarn structure At fabric or be made of the fabric, fabric includes at least two horizontal yarn layers being stacked, wherein lengthwise yarn is with paper side and machine The float structure of side ties up horizontal yarn, and float structure is alternately positioned in paper side and machine side, and fabric is in paper side and machine Only there is lengthwise yarn float structure, lengthwise yarn float structure to overlap at least two adjacent horizontal yarns respectively for side, and all vertical Yarn float structure overlaps the horizontal yarn of identical quantity.

In other words, dry net according to the present invention includes the fabric for not having in each horizontal yarn lengthwise yarn bending part, or Person's dry net according to the present invention in each horizontal yarn by not having the fabric of lengthwise yarn bending part to constitute.It is floating that there is only lengthwise yarns Line tissue, that is, always at least two adjacent horizontal yarns are overlapped by lengthwise yarn.Here, in dry net according to the present invention, institute There is lengthwise yarn float structure to extend in the horizontal yarn of identical quantity in paper side and machine side.In addition, according to the present invention dry In dry net, lengthwise yarn float structure is alternately positioned in paper side and machine side.It is applicable in for the trend of each lengthwise yarn of fabric It is that the float structure in a fabric side follows the float structure in another fabric side and repeatedly.Therefore, lengthwise yarn Float structure in a fabric side is correspondingly positioned at two flotation line groups followed in succession in other fabric side of lengthwise yarn Between knitting.

It is obtained especially uniformly in certain journey using the lengthwise yarn float structure for the equal length interlocked in two fabric sides Symmetrical fabric construction on degree, and therefore obtain especially uniform appearance.

On the one hand the uniform fabric construction of dry net according to the present invention facilitates the number of the contact point in two fabric sides The raising of amount and/or the increase of contact surface and therefore facilitate high FFI values, to there is the big contact surface for paper web, And at the same time the high wear-resisting amount of machine side can be provided.

On the other hand, the seam circle for continuous configuration may be implemented using dry net according to the present invention (Nahtschlaufen) particularly preferred orientation.In the flat fabric from paper machine area, two pass through transverse to lengthwise yarn The fabric seamed edge crossed usually is formed as follows, that is, in so that lengthwise yarn is woven back fabric body in the case where forming circle, that is, is compiled In the plane for knitting back adjacent lengthwise yarn, adjacent lengthwise yarn is shortened, until it is indulged using what the arrival of its end was braided back The end side of yarn ends.

The lengthwise yarn section being braided back is tied herein, to which it continues and extend to the fabric knot for the lengthwise yarn being shortened In structure, until reaching fabric seamed edge.A part for circle is formed as follows herein, that is, the lengthwise yarn being braided back it is corresponding Matched freely vertical section protrude beyond two braiding seamed edges some, be used for plug wire interconnecting piece to be formed (Steckdrahtnahtverbindung) seam circle.For this purpose, the seam of the seam circle and other fabric seamed edge of a fabric seamed edge Circle is compared and is arranged in such a way, that is, they are overlapped to mutual combing when splicing fabric seamed edge, to be formed by it for wearing Draw the channel of plug wire.Plug wire then forms the connection of the fabric seamed edge of both sides, to obtain continuous woven stretching (Maschinenbespannung)。

Dry net according to the present invention can realize the uniform distortionless orientation of seam circle, and method is to pass through establishment " wave " being formed into fabric yarn is turning back and braiding returns to the lengthwise yarn being accordingly truncated every lengthwise yams thread end Difference direct neighbor initial braiding path when actually " shape is in locking manner (formscl ü ssig) " be embedded into fabric knot In structure, without lengthwise yarn to be reversed to 180 ° again when returning.

Design scheme according to the present invention is abandoned by the previously known introduction of the prior art, and according to the introduction, fabric has About two asymmetrical structures of fabric side (it is with the multiple contact surfaces and/or contact point in machine side) and in each cross Bending part on yarn.

The lengthwise yarn of the fabric of dry net according to the present invention especially warp yarn, horizontal yarn especially weft threads.

The embodiment of dry net according to the present invention is characterized in that fabric only has in lucky two adjacent horizontal yarns Lengthwise yarn float structure on line, either only have lengthwise yarn float structure in lucky three adjacent horizontal yarns or Only there is the lengthwise yarn float structure in lucky four adjacent horizontal yarns.Float structure length in two horizontal yarns exists This is particularly preferred.

Alternative can be additionally provided that, each of between at least a pair of preferably horizontal yarn that a pair is stacked just Prolong between float structure of the lengthwise yarn all in fabric side float structure adjacent thereto corresponding in another fabric side It stretches.Then, the adjacent lengthwise yarn float structure in opposed fabric side is separated by least one preferably lucky one to each other respectively A horizontal yarn, and lengthwise yarn is accordingly drawn in a manner of from next float structure on a float structure to other fabric side It leads across the horizontal yarn pair being stacked.

In addition, the quantity of the horizontal yarn of machine side especially can be 1 with respect to the quantity of the horizontal yarn of paper side:1.

It is provided that in other advantageous design scheme, fabric has lucky two horizontal yarn layers and/or lucky one A lengthwise yarn layer, wherein the combination confirmation being made of lucky two horizontal yarn layers and what a proper lengthwise yarn layer is especially appropriate 's.

In the particularly advantageous embodiment of dry net according to the present invention, the textile design of fabric includes：With six There are six the machines of horizontal yarn and six lengthwise yarns side by side side by side for the horizontal yarn layer and band of the paper side of a horizontal yarn side by side The horizontal yarn layer of device side.Then, the horizontal yarn especially shape of the horizontal yarn layer of the horizontal yarn and machine side of the horizontal yarn layer of paper side At band, there are two the horizontal yarns pair for the horizontal yarn being accordingly stacked.Then, it is tied up preferably using what wherein each lengthwise yarn carried out Following form, that is, each lengthwise yarn overlaps two adjacent horizontal yarns pair in paper side with float structure, later in next horizontal yarn Extend between, two adjacent horizontal yarns pair is and then overlapped with float structure in machine side, and finally in next horizontal yarn Pass through between line pair.Then, the lengthwise yarn side by side of textile design preferably in terms of its trend respectively at least one horizontal yarn Right, especially at least two horizontal yarns are to being staggered.This structure confirms to be especially suitable for dry net according to the present invention When.

It is apparent that machine side and paper side lengthwise yarn float structure can also overlap more than two in this design scheme Horizontal yarn side by side.Such as can be arranged and configure in succession as follows, it is configured in succession according to this, guides to other and knit in lengthwise yarn Before object side, each lengthwise yarn float structure extends in three adjacent horizontal yarns.Horizontal yarn layer in paper side and machine side In textile design then respectively include eight horizontal yarns and eight lengthwise yarns side by side side by side, wherein adjacent lengthwise yarn Preferably accordingly with the horizontal yarn of at least one horizontal yarn pair, especially two to offseting one from another in terms of its trend.It can also be arranged Lengthwise yarn float structure in four or more horizontal yarns, wherein the horizontal yarn of pattern and the quantity of lengthwise yarn then phase It should be improved.

It is provided that according to other embodiment, paper side is respectively provided with the contact formed by fabric yarn with machine side Point, contact point is respectively provided with contact surface, and the contact surface of the contact point on paper side and in machine side is accumulated as band respectively There is total contact surface of the percentile contact surface share in the entire surface of paper side or machine side, and dry net has fabric Thickness, wherein can be calculated according to the following equation out from contact surface share, the quantity of contact point and fabric thickness for paper side Fiber fineness index (FFI-PS) and fiber fineness index (FFI-MS) for machine side：

And the ratio of FFI-PS and FFI-MS is at least 1:0.9, especially at least 1:0.95 or FFI-MS and FFI-PS Ratio be at least 1:0.9, especially at least 1:0.95.

Confirm especially appropriate, paper side and machine side are characterized in 35% to 45%, especially 38% to 41% Contact surface share in range.

For fabric thickness, it can especially be located in the range of 1.0mm to 1.8mm, be preferably placed at 1.3mm extremely In the range of 1.5mm.

The cross section of fabric yarn can be in addition symmetrically or non-symmetrically and/or circular, oval, polygon , especially rectangle.

For rectangle cross section the case where, for horizontal yarn, one of two seamed edge length seamed edge length is excellent It is selected in the range of 0.3mm to 0.4mm, another seamed edge length is preferably in the range of 0.6mm to 0.7mm.For example, preferred It can be provided that in design scheme, a seamed edge length is 0.66mm, and a seamed edge length is 0.33mm.

It is oriented as follows in an adequate manner in the cross section of the rectangle of horizontal yarn, that is, longer side is parallel to paper Side and machine side positioning, and shorter side is normal thereto.

Polymer material is suitable as the material confirmation for fabric yarn.Thus particularly in view of PPS (polyphenyl Thioether), PET (polyethylene terephthalate) or PEEK (polyether-ether-ketone), wherein their mixing is also feasible.In addition The fabric yarn of different materials can be used, and in this case the polymer material that premise arrives therewith can also be used not Same material.

In addition, subject of the present invention is the drying part of paper machine, drying cylinder with multiple heating and at least one The dry net guided on drying cylinder.According to the present invention, dry net described above is used herein, that is, paper web is in a usual manner With the paper side contacts of dry net.

Finally, subject of the present invention is dry net according to the present invention makes as follows in the drying cylinder of paper machine With, that is, pass through the paper side contacts of paper web and dry net that drying part guides.

Description of the drawings

In the accompanying drawings the present invention is elaborated by embodiment.Wherein：

Fig. 1 to 6 is shown with schematic diagram and in the case where showing six of textile design warp yarns side by side across root According to the longitudinal section of the embodiment of the dry net of the present invention, which is limited by a textile design；

The weft threads that Fig. 7 to 12 is stacked two-by-two respectively with schematic diagram and in six couple side by side for showing textile design In the case of show that, across the cross-sectional view according to the dry net of Fig. 1 to 6, which is limited by identical fabric pattern；

Figure 13 show the section of the paper side according to the dry net of Fig. 1 to 6 contact point and its contact surface corresponding to PCA Page 4 of document " standard measure through inspection " above-mentioned, the laser scanning figure of paragraph C11；With

Figure 14 shows that the contact point of the section of the machine side of the dry net according to Fig. 1 to 6 and the corresponding of its contact surface swash Photoscan.

Specific implementation mode

Fig. 1 to 12 shows the reality of dry net according to the present invention in the case where showing textile design 1 of dry net completely Apply the section of mode, wherein the side being directed upwards towards in figure forms paper side, and downwardly directed side forms machine side in figure. This, Fig. 1 to 6 shows the longitudinal section across textile design 1, from the trend for wherein obtaining six warp yarns 2 to 7 side by side, warp Yarn is formed through line pattern.Fig. 7 to 12 shows the cross-sectional view across textile design 1 in addition.

As can be seen from the figure, there are two weft threads layers 8,9 for dry net tool, specifically the weft yarn with paper side The weft threads layer 9 of line layer 8 and machine side.Here, in each textile design 1, the weft threads layer 8 of paper side includes six weft yarns Line 10 to 15, and the weft threads layer 9 of machine side equally includes six weft threads 16 to 21.The weft yarn of the weft threads layer 8 of paper side Line 10 to 15 forms weft threads pair with the weft threads 16 to 21 of the weft threads layer 9 of machine side herein, and there are two phases to band for weft threads The weft threads 10,16 (Fig. 1 to 6 and Fig. 7) or 11,17 (Fig. 1 to 6 and Fig. 8) that should be stacked or 12,18 (Fig. 1 to 6 and figures Or 13,19 (Fig. 1 to 6 and Figure 10) or 14,20 (Fig. 1 to 6 and Figure 11) or 15,21 (Fig. 1 to 6 and Figure 12) 9).Paper side Weft threads layer 8 weft threads 10 to 15 quantity and the quantity of the weft threads 16 to 21 of the weft threads layer 9 of machine side ratio phase It should be 1:1.

Warp yarn 2 shown in FIG. 1 see from left to right first paper side it is two adjacent by be stacked weft threads 10, 16 and 11,17 weft threads constituted are to upper process, then in the weft threads of next weft threads pair along the longitudinal direction being stacked 12, pass through between 18, then lower section is passed through in two weft threads being made of weft threads 13,19 and 14,20 in machine side, and And then pass through between two weft threads 15,21 of last weft threads pair.Later, in next fabric figure not shown here The trend is repeated in case.

Warp yarn 3 to 7 (Fig. 2 to 6) side by side has and 2 identical trend of warp yarn, however such as may be used in terms of its trend Respectively to the right with the weft threads of the quantity of restriction to being staggered, i.e., to be staggered along the longitudinal direction as contrastively seeing in figure, That is, warp yarn 3,4 and 6,7 is respectively relative to previous warp yarn respectively with two weft threads to being staggered, warp yarn 5 is with 3 A weft threads is to being staggered.

The configuration of dry net and in turn article shape are accordingly identical in two fabric sides.

It is applicable in for each warp yarn 2 to 7, warp float structure replaces in paper side and machine side.The warp thread of paper side The float structure of line carries out between two adjacent float structures of the warp yarn of machine side, and vice versa.

In addition it is respectively present weft threads between two adjacent warp float structures of opposed fabric side, that is, It says, a warp float structure separately weft threads separately from each other along the longitudinal direction.

As it is likewise seen that as, all warp float structure length having the same of dry net are specifically applicable in All warp float structures in paper side and machine side, extend on lucky two weft threads side by side.

The feature of weft threads 10 to 15 and 16 to 21 is the cross section of rectangle in addition, wherein all weft threads 10 to 15 is big as 16 to 21 cross section.Specifically, all weft threads 10 to 15 and 16 to 21 be characterized in that 0.33mm and The seamed edge length of 0.66mm.

Fig. 7 describes the contact surface of paper delivery side using its white area, is illustratively indicated in the figure 7 with 22.With identical Mode, Fig. 8 depicted the contact surface of machine side using its white area, illustratively indicated in fig. 8 with 23.It can be seen that , the quantity of the quantity of the contact surface 22 of paper side and the contact surface 23 of machine side is at least generally identical.

Specifically, the contact surface share of paper side is 39.67%, and the contact surface share of machine side is 38.25%.In addition, paper The FFI values of side are 1724, and the FFI values of machine side are 1685.In the embodiment shown therefore the ratio of FFI-PS and FFI-MS It is 1:0.98.

On the one hand facilitate carrying for the quantity of the contact point in two fabric sides about the identical fabric construction of two fabric sides It is high and/or contact surface to increase and facilitate high FFI values in turn, to exist simultaneously the high contact surface for paper web, and And the high wear-resisting amount of machine side can be improved.

In addition, the ideal orientation of necessary seam circle is feasible for the continuous configuration of dry net.It can obtain The uniform distortionless orientation of circle is stitched, method is to be formed into " wave " in fabric yarn every one by braiding It is real when the initial braiding path for the difference direct neighbor that lengthwise yams thread end turns back and braiding returns to the lengthwise yarn being accordingly truncated " shape is in locking manner " is embedded into fabric construction on border, without lengthwise yarn to be reversed to 180 ° again when returning.

Claims

1. a kind of dry net, the dry net is suitable for using the drying part of paper machine, band is useful for the paper web that reclines Determining paper side and the machine side away from paper side, wherein the dry net has by lengthwise yarn (2-7) and horizontal yarn (10-21) The fabric of composition is made of the fabric, and the fabric includes at least two horizontal yarn layers being stacked, wherein the lengthwise yarn Horizontal yarn is tied up with paper side and machine side float structure, the float structure is alternately positioned in paper side and machine side, and The fabric only has lengthwise yarn float structure in paper side and machine side, and it is adjacent that lengthwise yarn float structure overlaps at least two respectively Horizontal yarn, and all lengthwise yarn float structures overlap the horizontal yarn of identical quantity.

2. dry net according to claim 1, which is characterized in that the lengthwise yarn is warp yarn (2-7), the horizontal yarn It is weft threads (10-21).

3. dry net according to claim 1 or 2, which is characterized in that the fabric only has just two adjacent Lengthwise yarn float structure in horizontal yarn (10-21), or only have vertical in lucky three adjacent horizontal yarns (10-21) Yarn float structure, or only there is the lengthwise yarn float structure in lucky four adjacent horizontal yarns (10-21).

4. dry net according to any one of the preceding claims, which is characterized in that at least a pair of preferably just a pair of Float structure of each lengthwise yarn (2-7) in a fabric side between the horizontal yarn (10-21) being stacked and another fabric Extend between corresponding float structure adjacent thereto on side.

5. dry net according to any one of the preceding claims, which is characterized in that the horizontal yarn (16-21) of machine side The ratio of number of quantity and the horizontal yarn (10-15) of paper side is 1:1.

6. dry net according to any one of the preceding claims, which is characterized in that the fabric has lucky two cross Thread layers (8,9) and/or just what a lengthwise yarn layer.

7. dry net according to any one of the preceding claims, which is characterized in that the textile design (1) of the fabric wraps Band is included there are six the horizontal yarn layer (8) of the paper side of horizontal yarn (10-15) side by side and with there are six horizontal yarns (16-21) side by side And the horizontal yarn layer (9) of the machine side of six lengthwise yarns (2-7) side by side, wherein the cross of the horizontal yarn layer (8) of the paper side The horizontal yarn (16-21) of yarn (10-15) and the horizontal yarn layer (9) of the machine side forms band, and there are two the cross being correspondingly stacked The horizontal yarn pair of yarn (10-21), and be in the form of following using wherein each tying up for lengthwise yarn (2-7) progress, that is, it is every A lengthwise yarn (2-7) overlaps two adjacent horizontal yarns pair in paper side with float structure, prolongs between next horizontal yarn pair later It stretches, two adjacent horizontal yarns pair is and then overlapped with float structure in machine side, and finally between next horizontal yarn pair By, wherein the lengthwise yarn (2-7) side by side of the textile design (1) is in terms of its trend respectively at least one horizontal yarn Right, especially at least two horizontal yarns are to being staggered.

8. dry net according to any one of the preceding claims, which is characterized in that the paper side and the machine side point The contact point that Ju You not be formed by fabric yarn (2-21), the contact point are respectively provided with contact surface, and on paper side and The contact surface of contact point in machine side is accumulated as connecing with percentile in the entire surface of paper side or machine side respectively Total contact surface of contacting surface share, and the dry net has fabric thickness, wherein it can be from contact surface share, contact point Quantity and fabric thickness are calculated according to the following equation out the fiber fineness index (FFI-PS) for paper side and are directed to machine side Fiber fineness index (FFI-MS)：

And the ratio of the FFI-PS and FFI-MS is at least 1:0.9, especially at least 1:The 0.95 or FFI-MS Ratio with the FFI-PS is at least 1:0.9, especially at least 1:0.95.

9. dry net according to any one of the preceding claims, which is characterized in that the paper side and the machine side with Contact surface share in the range of 35% to 45%, especially 38% to 41% is characterized.

10. dry net according to any one of the preceding claims, which is characterized in that the fabric thickness is in 1.0mm To 1.8mm, it is preferably in the range of 1.3mm to 1.5mm.

11. dry net according to any one of the preceding claims, which is characterized in that the cross of the fabric yarn (2-21) Section is symmetrical or asymmetrical and/or circular, oval, polygon, especially rectangle.

12. dry net according to any one of the preceding claims, which is characterized in that the cross of the horizontal yarn (10-21) Section is rectangle, and its feature is especially a seamed edge length in the range of 0.3mm to 0.4mm, and one Seamed edge length is in the range of 0.6mm to 0.7mm.

13. dry net according to any one of the preceding claims, which is characterized in that the fabric yarn (2-21) is by gathering It closes object material to constitute, be especially made of PPS, PET and/or PEEK.

14. the drying part of paper machine, with multiple heated drying cylinders and at least one guided on drying cylinder Dry net, which is characterized in that the dry net is constructed according to any one of claim 1 to 13.

15. according to the dry net of any one of claim 1 to 13 construction in the drying part of paper machine as follows It uses, that is, the paper side contacts of the paper web and dry nets that guided by drying part.