CN1289735C

CN1289735C - Plant and method for dryly producing non-woven fiber web of short and long fibers, cotton fiber web contg. cotton linters pulp (CLP)

Info

Publication number: CN1289735C
Application number: CNB018104800A
Authority: CN
Inventors: 延斯·O·B·安诺生
Original assignee: M&J Fibretech AS
Current assignee: M&J Fibretech AS
Priority date: 2000-05-31
Filing date: 2001-05-31
Publication date: 2006-12-13
Anticipated expiration: 2021-05-31
Also published as: AU2001263774A1; JP2003535230A; WO2001092621A1; PT1299588E; CA2408800A1; DE60102301D1; ATE261506T1; EP1299588B1; EP1299588A1; CN1432083A; ES2217154T3; CA2408800C; ES2217154T4; TR200400816T4; US20030070262A1; DE60102301T2

Abstract

A plant comprising two air-lay stations (1; 2) placed one after the other serving for dryly producing a non-woven fibre web. Each station comprises a fibre feed duct (9; 26) for feeding fibres to the station from a fibre source (4; 16), an air-lay forming head (5; 19) connected to the fibre feed duct (9; 26) and at least partly defined by a perforated screen (6; 20), and a suction box (8; 23) for successively sucking fibres in the forming head (5; 19) through the screen (6; 20). A separate fibre source (4; 16) is part of each station (1; 2). The first station (1) furthermore has a fibre collector (8; 29) placed under the screen (6) of its forming head (5) whereas the second station (2) has a forming wire (22) placed under the screen (20) of its forming head (19). The two stations (1; 2) are connected to at least one conveyor (12; 13) for conveying fibres from the fibre collector (8; 29) of the first station (1) to the forming head (19) of the second station (2).

Description

Make the equipment and the method for staple fibre and long stapled nonwoven web dryly

Technical field

The present invention relates to a kind of method, be used for making dryly a kind of at least relatively weak point and relative more long stapled nonwoven web of comprising.

The invention still further relates to a kind of equipment that is used for making dryly a kind of nonwoven web, this equipment is the air lay station manufacturing by two successive configurations, each described station comprises at least one fiber feeding passage fiber is fed into described station from fibre source, comprise at least one air lay forming head and be connected to described fiber feeding passage and form by a stamped sieve at least in part, also comprise a gettering container and be used for when passing described sieve, fiber being sucked forming head unceasingly.

The invention still further relates to a kind of nonwoven web of making by the above-mentioned method and apparatus of making nonwoven web dryly.

At last, the present invention relates to the utilization of cotton linter pulp (CLP), this cotton linter pulp is a kind of relatively cheap byproduct that is obtained by the seed coat of cotton plant, is used for making dryly a kind of relatively cheap non-woven air lay cotton fiber net.

Background technology

The air lay technology has been known, has for example described a kind of equipment that is used for making dryly a kind of nonwoven web among the patent GB1499687.This equipment has an air lay forming head, and the form of this forming head is the chamber that is formed by a perforated bottom.Be several rows of rotor on described bottom, these rotors form described fiber distribution during operation and pass the air-flow of described perforated bottom.A permeable shaped wire of air is being set hereunder, and this shaped wire operation is constantly during operation accepted the fiber that the negative pressure that produced by the gettering container that is arranged on the shaped wire below pulls out from the opening of perforated bottom.

The nonwoven web that this equipment is suitable for making similar fiber most or has the same structure fiber at least substantially.If described fiber web is made by having substantially the fiber of different length, described equipment can not reach the best on the function, and the fiber web of manufacturing can not obtain satisfied fully quality.

These shortcomings are due to the fact that and cause that promptly, the size of the opening of described bottom can not be suitable for the relatively long and relative fiber than weak point simultaneously.Therefore, selected opening must have such size, and described size is between each the optimum size of two kinds of fibers.So the size of opening will be easy to too big with respect to staple fibre, and will be too little with respect to long fiber.

GB2031970 has described a kind of air lay equipment, and this equipment has the forming head of a plurality of the above-mentioned types, these forming heads on an associating shaped wire one then one be arranged to a row.By these devices, described equipment can be operated the acquisition good result to staple fibre and long fiber.The fiber of concrete length is assigned with away from a bottom opening that has exactly is suitable for the forming head of this fibre length.Just can make formation stratiform fiber web by this technology, this technology also is required in other situation.Yet described known equipment and being not suitable for is made the homogeneity fiber web that the fiber of different length constitutes.

Problem mentioned above has attempted that first is arranged on one and replaces one to solve after being arranged on one by being shaped.This equipment has description in patent specification WO96/10663.In this case, described equipment has three forming heads.Uppermost forming head is supplied to SAP (superabsorbent powder), and has a bottom, and its upper shed just in time is suitable for the SAP size.Middle forming head is supplied to staple cellulose fibers, and have a bottom, and this bottom just in time is suitable for the size of these staple fibres, and nethermost forming head is supplied to long thermal bonding fiber, and having a bottom, this bottom just in time is suitable for these long stapled sizes.

The coboundary of described middle forming head is formed on described bottom of going up forming head, and the coboundary of forming head is formed down again on the bottom of this forming head.

The size of the opening of the bottom of forming head makes described SAP and cellulose fibre to pass through these openings simultaneously with thermal bonding fiber under being arranged in, and the size of the opening of forming head bottom makes described SAP to pass through these openings simultaneously with described cellulose fibre in the middle of being arranged in.

Under the bottom of described forming head down is a permeable shaped wire of air, this shaped wire is operation constantly during operation, be a gettering container under the permeable shaped wire of this air, this gettering container is gangs for all three forming heads.

When described equipment moves, the opening that described SAP quilt drives downwards by the bottom of last forming head enters described middle forming head, the opening that described SAP and cellulose fibre are driven the bottom by forming head in the middle of described downwards enters described forming head down, described SAP, staple cellulose fibers and long thermal bonding fiber by drive downwards by the opening of the bottom of forming head down form one be positioned on the shaped wire layer.

Described SAP and staple cellulose fibers are at first mixed in the forming head in described, are mixing with long thermal bonding fiber in the forming head down then.By this mixing, can obtain a kind of fiber web of homogeneity.

But, be difficult to the homogenieity that different air-flows makes last fiber web acquisition satisfaction in the described process of control.

This is because described these air-flows will be unavoidably interfering with each other except other reason.Thereby, air is roused the both sides of the bottom of advancing to go up forming head and middle forming head simultaneously, in addition, the negative pressure that produces from described gettering container is bound to via the bottom of forming head in the middle of the opening of the bottom of forming head propagates into down, and the bottom that propagates into forming head via middle forming head opening.Simultaneously, described SAP, staple cellulose fibers and long thermal bonding fiber are moved through the opening of each bottom in the opposite direction, thereby described opening is stopped up very big degree randomly by air flow.

On described forming head is positioned at mutually each other rather than one when forming a row after being positioned at one, described equipment also has out-of-proportion height.Therefore, can be difficult to find the room existing building from the known equipment of patent specification WO96/10663, the new building that is used for this equipment can seem improper at the building of one group of harmony usually.In addition, described big height means the inspection and the process in these equipment of control of equipment very difficult.

Now, make fiber web dryly and be widely used in many various objectives, for example can list napkin, toilet paper, diaper, sanitary napkin and be used for the product of incontinent patients.

For the price that can keep these products is in commercial acceptable degree, a big chunk fiber that forms described air lay fiber product is generally cheap cellulose fibre, these cellulose fibres can mix with for example thermal bonding fiber according to application purpose, and can also comprise SAP (superabsorbent powder) as described product increases the ability that product absorbs liquid.

Yet for some purpose, these product needed are than more soft based on the product of cellulose fibre.

This very soft non woven fibre product can be made by utilizing cotton fiber rather than cellulose fibre.Because the high price of cotton fiber, the product of acquisition will be very expensive for practical application.

The production of cotton stays a kind of byproduct and is called cotton linter pulp (CLP), and this cotton linter pulp comprises from the seed coat of cotton plant and the residue staple fibre that comes.

This byproduct is than cheap many of common cotton fiber.Therefore, can utilize it to make a kind of very soft non-woven cotton fiber net, it considers quality, can compete with the fiber web based on cellulose fibre on price.

Yet CLP comprises very thin and very short fiber, and has the fiber or the cottonseed shape fiber of a large amount of not shreddings.Therefore, above-mentioned known equipment and method can not be used to satisfactorily to make a kind of CLP fiber and thermal bonding fiber constitute do not have cottonseed shape fiber, homogeneity, nonwoven web.

Summary of the invention

Purpose of the present invention just provides a kind of method and apparatus of describing type hereinbefore, can produce nonwoven web a kind of homogeneity, that do not have cottonseed shape fiber by this method and apparatus on the basis of CLP fiber and thermal bonding fiber.

Second purpose of the present invention just provides a kind of nonwoven web of mentioning type hereinbefore, and this nonwoven web has structure homogeneity and that do not have cottonseed shape fiber substantially.

The 3rd purpose of the present invention provides the purposes of a kind of cotton linter pulp (CLP), and this cotton linter pulp is made a kind of non-woven cotton fiber net dryly as basic material.

Novelty of the method according to this invention and specific characteristic are to produce one first air-flow, and this first air-flow has from a fibre source and the staple fibre that comes; First air-flow is compelled to by one first stamped sieve, this first stamped sieve has some openings, the size of opening can allow to be passed through by the shredding staple fibre substantially, but can not allow the staple fibre of not shredding to pass through, and described first air-flow also is compelled to by permeable first shaped wire of air, described shaped wire constantly moves and is keeping the non-woven layer of a staple fibre during operation, produce one second air-flow, have the staple fibre that comes from being positioned at the fibrage on the first formation line in this second air-flow; Produce one the 3rd air-flow, the 3rd air-flow has from a long stapled fibre source and the long fiber that comes; The second and the 3rd air-flow is compelled to by one second stamped sieve, and this second stamped sieve has some openings, and the size of these openings allows staple fibre and long fiber to pass through; The second and the 3rd air-flow is compelled to by permeable second shaped wire of air, this shaped wire is operation constantly during operation, the fiber that passes through is rested on forms a fibrage on second shaped wire, shaped wire is a cycle operation when operation, is made into a nonwoven web through further handling described fibrage.

By using this method, can obtain the nonwoven web that a kind of staple fibre of homostyructure and long fiber constitute, not have cottonseed shape fiber (nits) by the structure of this homogeneity when first stamped sieve extracts away when the staple fibre of not shredding or cottonseed shape fiber simultaneously.

According to the novelty of equipment of the present invention and specific characteristic be one independently fibre source belong to each station, first station has a fiber collecting device, this fiber collecting device is arranged under the sieve of at least one forming head, second station has a shaped wire, this shaped wire is arranged under the sieve of at least one forming head, described two stations are connected by at least one conveyer belt, and described conveyer belt is used for fiber is transported to from the fiber collecting device of first station forming head of second station.

When the sieve aperture of first station has the size that cooperates with described staple fibre such as CLP fiber, and the sieve aperture of second station have with described long fiber for example thermal bonding fiber cooperate size the time, described equipment can be used to make a kind of nonwoven web with homostyructure.

First station is fed staple fibre, and second station is fed the long fiber and the staple fibre of the sieve aperture by first station.Thereby described staple fibre and long fiber obtain to mix carefully in second station, thereby can form the fibrage with homostyructure on the described shaped wire of second station.

By above-mentioned structure, the fiber of shredding or cottonseed shape fiber can not extracted the fiber web that make to obtain selectively and become and do not have cottonseed shape fiber at least basically from first station.

The conveyer belt that first and second stations are linked together can be a belt conveyor, but can be a fiber feeder channel in an advantageous embodiments, this fiber feeder channel be connected to the fiber collecting device of first station forming head of second station.Produce an air-flow that passes in the described fiber feeder channel by a fan, described fiber is upwards aspirated from the fiber collecting device of first station to be entered in the described fiber feeder channel so that be blown to by this fiber feeder channel in the described forming head of second station.

The fiber collecting device of first station can be any suitable type.

In an advantageous embodiments, described fiber collecting device can be the gettering container of first station very simply, thereby the extraction from gettering container is undertaken by the fiber feeder channel that is connecting described two stations.

In second advantageous embodiment, described fiber collecting device can be a shaped wire, and this shaped wire serves as a mobile filter, and staple fibre is filtered out from the air-flow that passes the first station sieve aperture.

Be that according to fibroreticulate novelty of the present invention and specific characteristic it comprises the mixture of a kind of thermal bonding fiber and CLP fiber, described CLP fiber sieved the fiber or the cottonseed shape fiber of not shredding, and it has structure a kind of homogeneity and that do not have cottonseed shape fiber.This fiber web has a very large pliability, and this big pliability all needs for a lot of purposes.In addition, highly beneficial based on the fiber web of cotton fiber for skin, can not cause allergy.

Novelty and specific characteristic according to purposes of the present invention are to utilize CLP to make a kind of non-woven air lay cotton fiber net as basic material with thermal bonding fiber.

Based on the cotton fiber net of traditional cotton fiber because these fiber price comparison height are very expensive in actual applications.By using CLP as basic material, can obtain a kind of cheap product, this product has identical advantage with cotton fiber netting gear based on the traditional cotton fiber.

But described CLP fiber is relatively short and fragile.Therefore described fibroreticulate intensity is by using method and apparatus according to the invention, with the acquisition that bonds together of thermal bonding fiber and described CLP fiber.

According to the present invention, when being following type, the type of described thermal bonding fiber can obtain good especially intensity, described thermal bonding fiber is a kind of bicomponent fiber, each fiber all comprises a fuse, this fuse comprises a kind of quite high-intensity material, and fuse is surrounded by an external coating, and described external coating has lower fusing point than described fuse.

In described fibroreticulate production process, described external coating will be in the same place with short and fragile CLP fibers melt easily with effectively each other, particularly under the situation that Gaussian points is melted, the fuse of bicomponent fiber passes to the cotton fiber net with its high strength thereby the advantageous feature of CLP cotton fiber is kept fully.

Description of drawings

Be described by the embodiment of reference accompanying drawing to illustrative hereinafter, the present invention will obtain more detailed description, wherein:

Fig. 1 is a schematic diagram, first embodiment that shown is according to present device;

Fig. 2 is a schematic diagram, second embodiment that shown is according to present device;

Fig. 3 is a schematic diagram, the 3rd embodiment that shown is according to present device;

Fig. 4 is a schematic diagram, the 4th embodiment that shown is according to present device.

The specific embodiment

Hereinafter, the description of the invention supposition is homogeneity and the cotton fiber net no cottonseed shape fiber that will make a kind of CLP fiber and thermal bonding fiber formation.

CLP has very thin and short fiber, and has a large amount of not expansion fibers or cottonseed shape fiber.Therefore, up to the present, can't use CLP to make the cotton fiber net of satisfactory quality in practice.

Thin and short CLP fiber is bound on the thermal bonding fiber so that produce necessary strength for described fiber web in known mode own.The manufacturing of the cotton fiber net that is obtained is relatively cheap, and has a kind of very soft structure.Thereby this product has very large sales volume.

In Fig. 1, equipment according to the present invention has: one first air lay station 1 is used for the CLP fiber; One second air lay station 2 is used for thermal bonding fiber and at the screened CLP fiber of crossing cottonseed shape fiber of first station.If described thermal bonding fiber and the CLP mixed with fibers of being unscreened just will produce the not satisfied fiber web of quality.

The critical piece of first station 1 has: a centrifugal crusher 3 is used for the CLP fiber is separated from a roller 4; One first forming head 5 has one first perforated bottom 6, and some are arranged in rows in the rotatable wing 7 of first on the described bottom 6 cover and one and are arranged on first gettering container 8 below the bottom 6.

When first station was worked, forming head 5 was supplied with from centrifugal crusher 3 and the fiber of separating that comes through first feeder channel 9, and the described first feeding passage 9 has one first feed fan 10.

The described wing 7 usefulness continuous flows cross described bottom 8 towards sweeping the CLP fiber that is supplied to.In this process, through the downward continuously inhale case 8 of 11 quilts of the opening on the bottom 8, the described second feed fan 12 is connected to described gettering container via second feeder channel 13 by the described fiber of one second feed fan, 12 effects.

The opening 11 of bottom 8 is configured to such size, and this size can allow described thin and short CLP fiber by still not passing through thicker cottonseed shape fiber.

Return fan 14 is used for described cottonseed shape fiber is turned back to centrifugal crusher 3 via a return duct 15, and described there cottonseed shape fiber can be opened.

The fiber that sieved is collected in the described gettering container, so this gettering container serves as the fiber collecting device simultaneously.

The critical piece of second station 2 has: a fibre source 16, have a bale breaker 17, and be used for thermal bonding fiber is decomposed from a thermal bonding fiber 18 bags; One second forming head 19, has one second perforated bottom 20, be arranged in rows in the rotatable wing 21 of the cover of second on the described bottom 20, a shaped wire 22 that is arranged under the bottom 20, one is arranged under the described shaped wire 22 and is connected to second gettering container 23 of a fan 25 through air intake duct 24, and described fan is used for forming negative pressure at described gettering container.

When second station is worked,, supply with the CLP fiber that sieved for second forming head 19 via second feeder channel 13 from first gettering container 8 by 12 effects of the second feed fan.

Second forming head 19 is also supplied with thermal bonding fiber via the mat woven of fine bamboo strips three feeder channels 26 from fibre source 16 with the 3rd feed fan 27 simultaneously.

In second forming head 19, the CLP fiber that is supplied to mixes with the thermal bonding fiber that is supplied to.Second glove wing, 21 usefulness continuous flows are with inswept second perforated bottom 20 of described blended fiber.In this process, described fiber by fan 25 effect via the opening 28 of described bottom by suction downwards continuously and on described shaped wire 22, form one deck, described fan 25 is connected to gettering container 23 via described air intake duct 24.

The opening 28 of second bottom 20 is configured to such size, and this size can make described CLP fiber and thermal bonding fiber to pass through.

Thereby the fibrage of CLP fiber and thermal bonding fiber is formed on the described shaped wire 22, and described fibrage has structure homogeneity and that do not have cottonseed shape fiber.(not shown) in a known subsequent process, described fibrage is changed into needed fiber web at last, and this required fiber web can apply bonding with one deck emulsion.

According to the present device shown in Fig. 2 with shown in Fig. 1 and as described above equipment is identical substantially.Therefore similarly parts are represented by identical label.

Yet in this situation, the fiber collecting device of first station is a shaped wire 29, and this shaped wire 29 serves as a moving filter device, and the CLP fiber is filtered out from the air-flow of the bottom opening 11 that passes first station 1.

Described CLP fiber is drawn into downwards on the shaped wire 29 continuously by the opening 11 of a fan 30 effects via first bottom, and described fan 30 is connected on the gettering container 8 via air intake duct 31.One rests on the shaped wire 29 equally distributed CLP fibrage 32 and is carried continuously towards the import 33 of second feeder channel 13 by this shaped wire, and is supplied with a Continuous Flow via second feeder channel 13 by 12 effects of the second feed fan and to enter into second forming head 19.

The advantage that this solution has especially is that the CLP fiber that head sieve is crossed in second forming head 19 is subjected to point-device control, and the therefore last cotton fiber net that obtains can obtain a kind of structure very uniformly in a longitudinal direction.

According to the present device shown in Fig. 3 with shown in Fig. 2 and as described above equipment is identical substantially.Therefore similarly parts are represented by identical label.

In this embodiment, two stations all use a kind of known forming head of drum screen 41 forms, and described drum screen 41 has horizontal brush 42 and is used for fiber distribution by described sieve.Each station has two forming heads.

And, shown in Fig. 3 according to the function of the embodiment of present device and Fig. 2 illustrates and corresponding at above-described equipment, therefore here no longer describe.

Fig. 4 is a very view of signal, and what illustrate is that this equipment has according to an equipment of the present invention: one first station 34, have a forming head 35 that is used for the CLP fiber, and this forming head is arranged on the shaped wire 36; One second station 37 has forming head 38a, b, the c of three CLP fibers that are used to sieve and other fibers, is arranged on the associating shaped wire 39.

Described two stations are connected to a fabric belt 40, and as shown by arrows, this fabric belt is used for from the shaped wire 36 of first station 34 and the CLP fibre transportation that the sieve that comes is crossed enters into forming head 38a, b, the c of second station.

This equipment can be used to make the cotton fiber net, and this cotton fiber netting gear has a kind of composition to change, and this variation can change according to the fiber in the differing formed head that supplies to second station.

For example, this equipment can be used to make stratiform cotton fiber net, can also comprise for example SAP and synthetic fiber PET for example of a kind of powder in the cotton fiber net.

Two kinds of different known forming heads are mentioned hereinbefore and are illustrated in the accompanying drawings, and these can form the part in the present device.Yet this only is used the example as the equipment in the scope of the invention, and it can use the forming head of any other kind, can constitute a part in the identical device as two or more dissimilar forming heads.

In addition, the present invention forms partly at the fibroreticulate staple fibre of supposition the present invention to describe under the situation of CLP.

This also only is the example that is used as method and apparatus of the present invention, and it can also well be used to make has for example fiber web of cellulose fiber ingredients of other kind staple fibre.

The first air lay station of described equipment can also have the forming head that is used for staple fibre more than.

Thereby first station can have a forming head and second forming head that is used for the CLP fiber that is used for staple cellulose fibers, form a kind of homogeneity thereby can make, the non-woven cotton fiber net that does not have cottonseed shape fiber, this non-woven cotton fiber netting gear have acceptable pliability and more cheap relatively.

A kind of fiber web, it advantageously has the soft character of relatively short and fragile CLP fiber and the high strength properties of thermal bonding fiber, for example can obtain by following composition.

1. 1 kinds of fiber webs of example comprise the CLP fiber of percentage by weight 60 and the thermal bonding fiber of percentage by weight 40.

2. 1 kinds of fiber webs of example comprise the CLP fiber of percentage by weight 95 and the bicomponent fiber of percentage by weight 5.

3. 1 kinds of fiber webs of example comprise multilayer; Three layers of product for example, wherein the top and bottom layer comprises the CLP fiber of percentage by weight 60 and the bicomponent fiber of percentage by weight 40.The intermediate layer comprises the CLP fiber of percentage by weight 95, the bicomponent fiber of percentage by weight 5, but also can comprise SAP within the scope of the invention, SAF or paper pulp.

Claims

1. method of making nonwoven web dryly, described nonwoven web comprise at least relatively short with relative than long fiber, it is characterized in that described method comprises following operation:

-producing one first air-flow, this first air-flow has from a fibre source (4) and the staple fibre that comes;

-the first air-flow is compelled to by one first stamped sieve (6), and first stamped sieve has some openings (11), and the size of opening can allow to be passed through by the shredding staple fibre substantially, but can not allow the staple fibre of not shredding to pass through,

-and described first air-flow also be compelled to by breathable first shaped wire (29), described shaped wire (29) constantly moves and is keeping the nonwoven layer (32) of staple fibre during operation,

-produce one second air-flow, have the staple fibre that comes from being positioned at the fibrage (32) on the first formation line (29) in this second air-flow;

-producing one the 3rd air-flow, the 3rd air-flow has from a long stapled fibre source (16) and the long fiber that comes;

The-the second and the 3rd air-flow is compelled to by one second stamped sieve (20), and this second stamped sieve has some openings (28), and the size of these openings allows staple fibre and long fiber to pass through;

The-the second and the 3rd air-flow is compelled to by permeable second shaped wire of air (22), and shaped wire is a cycle operation when operation, and the fiber that passes through is rested on second shaped wire (22) and goes up a formation fibrage (43),

-be made into a nonwoven web through further handling fibrage (43).

2. according to the method for claim 1, it is characterized in that the staple fibre of shredding is not extracted from first stamped sieve (6).

3. method according to claim 1 is characterized in that, described nonwoven web is non-woven cotton fiber net, and described non-woven cotton fiber net is by cotton linter pulp and thermal bonding fiber manufacturing.

4. method according to claim 3, it is characterized in that described thermal bonding fiber is the bicomponent fiber type, each has a core that comprises relative high-strength material such bicomponent fiber, and surrounded by an external coating, described external coating has the fusing point lower than described core.

5. one kind is passed through two air lay stations (1; 2) make the equipment of nonwoven web dryly, one of described two air lay station are arranged on after the another one, and each all comprises: at least one fiber feeder channel (9; 26), be used for fiber from a fibre source (4; 16) be fed into described station; At least one air lay forming head (5; 19), with described fiber feeder channel (9; 26) link to each other and at least in part by a stamped sieve (6; 20) form; A gettering container (8; 23), the fiber that is used in the suction mold head (5,19) continuously passes described stamped sieve (6; 20), it is characterized in that a fibre source (4 independently; 16) belong to each station (1; 2), first station (1) has a fiber collecting device (8; 29) be arranged under the described sieve (6) of at least one forming head (5), second station (2) has a shaped wire (22) and is arranged under the sieve (20) of at least one forming head (19) described two stations (1; 2) coupled together by at least one conveyer belt (12,13), described conveyer belt is used for the fiber collecting device (8 of fiber from first station (1); 29) be transported to the forming head (19) of second station (2).

6. according to the equipment of claim 5, it is characterized in that the fiber collecting device of first station (1) is a shaped wire (29).

7. according to the equipment of claim 5, it is characterized in that the fiber collecting device of first station (1) is the gettering container (8) of the forming head (5) that belongs to described station (1).

8. according to claim 5 or 6 or 7 described equipment, it is characterized in that, the fibre source (4) of first station (1) comprises short relatively fiber, the size of sieve (6) split shed (11) of at least one forming head (5) can allow the staple fibre of shredding to pass through substantially, but can not allow the fiber of not shredding to pass through; The fibre source (16) of second station (2) comprises long relatively fiber, and opening (28) size in the sieve (20) of at least one forming head (19) allows relatively, and weak point can both pass through than long fiber with relative.

9. equipment according to claim 8 is characterized in that, the fibre source (4) of first station (1) comprises cotton linter pulp (CLP), and described cotton linter pulp is that the fibre source of second station comprises thermal bonding fiber from the byproduct of the seed coat acquisition of cotton plant.

10. as claim 5 or 6 or 7 described equipment, it is characterized in that, described thermal bonding fiber is the bicomponent fiber type, each has a core that comprises relative high-strength material such bicomponent fiber, and surrounded by an external coating, described external coating has the fusing point lower than described core.

11. as claim 5 or 6 or 7 described equipment, it is characterized in that, described with first and second stations (1; 2) conveyer belt that is joined to one another is a fiber feeder channel (13), and this fiber feeder channel extends in the fiber collecting device (8 of described first station; 29) and between the forming head (19) of described second station (2).

12. as claim 5 or 6 or 7 described equipment, it is characterized in that, at least described first station (1) has at least one and extracts pipeline (15), is used for extracting not opening fiber or cottonseed shape fiber by a transmission fan (14) from the sieve (6) of at least one forming head (5) of described station (1).

13. non-woven air lay fiber web that obtains by claim 1 or 2 described methods, it is characterized in that, described fiber web comprises the mixture of thermal bonding fiber and cotton linter pulp, described cotton linter pulp is a kind of byproduct that obtains from the seed coat of cotton plant, and has been removed the not fiber of shredding by sieve.

14. non-woven air lay fiber web according to claim 13, it is characterized in that, described thermal bonding fiber is the bicomponent fiber type, each has a core that comprises relative high-strength material such bicomponent fiber, and surrounded by an external coating, described external coating has the fusing point lower than described core.