CN100351073C - Method and device for producing a multi-ply web of flexible material, such as paper and nonwoven, and multi-ply material produced by the method - Google Patents

Method and device for producing a multi-ply web of flexible material, such as paper and nonwoven, and multi-ply material produced by the method Download PDF

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Publication number
CN100351073C
CN100351073C CNB038034778A CN03803477A CN100351073C CN 100351073 C CN100351073 C CN 100351073C CN B038034778 A CNB038034778 A CN B038034778A CN 03803477 A CN03803477 A CN 03803477A CN 100351073 C CN100351073 C CN 100351073C
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China
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pattern
layer
glue
glue point
multilayer
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Chinese (zh)
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CN1628025A (en
Inventor
安德斯·安德松
埃娃－利·萨尔瓦尔
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Essity Hygiene and Health AB
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SCA Hygiene Products AB
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/593—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives to layered webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/32—Multi-ply with materials applied between the sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0723—Characteristics of the rollers
    • B31F2201/0733—Pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0758—Characteristics of the embossed product
    • B31F2201/0761—Multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0758—Characteristics of the embossed product
    • B31F2201/0761—Multi-layered
    • B31F2201/0769—Multi-layered the layers being shifted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0771—Other aspects of the embossing operations
    • B31F2201/0774—Multiple successive embossing operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0784—Auxiliary operations
    • B31F2201/0787—Applying adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0784—Auxiliary operations
    • B31F2201/0792—Printing

Abstract

Method for producing a multi-ply web (14) of flexible material, such as paper and nonwoven material and a multi-ply product produced according to the method. A first pattern roll (5), having a three dimensional pattern of alternating raised (6) and recessed portions (7) transfers glue to a first (1) web shaped flexible material in a first press nip (8) in glue sites (17) covering an area corresponding to between 0.03 and 9 % of the total area of the first web material and sparsely distributed over substantially the entire area of the first (1) web material. A second (10) web shaped flexible material is brought in contact with the glue applied side of said first (1) web material in a second press nip (12) between a second pattern (13) having a three-dimensional pattern corresponding to that of the first pattern roll, and an impression roll (9). The first and second pattern rolls (5, 13) are driven in registry.

Description

Multilayer soft material, as the manufacturing method and apparatus of paper and non-woven material and the multilayer material of making by this method
Technical field
The present invention relates to a kind of method of the bonding manufacturing multilayer soft material by layer, soft material for example is paper and non-woven material.The present invention be more particularly directed to resemble the manufacturing of toilet paper and paper for kitchen, paper handkerchief, towel, napkin paper, handkerchief, Wiping material and similar products.The invention still further relates to a kind of multilayer soft material, soft material is paper and non-woven material for example, comprises at least one ground floor and a second layer, two-layerly is connected to each other by the bonding of glue pattern.
Background technology
Material to two or more layers carries out lamination so that the manufacturing final products are very common.As laminate product, obtain the more soft tissue products of single-layer products that one of a kind of ratio has suitable thickness and basis weight in this way.Absorbability and volume are moreover improved.
Lamination two-layer or more multi-layered paper is often made by means of gluing.These layers are also often carried out the mechanical mold pressing (embossing) of these layers before bonding together.Also know the lamination that only carries out two layers by mechanical mold pressing in addition, in this method, the mechanical connection of layer produces at mold pressing point.
For example, can recognize by EP-A-796727, two layers of paper is carried out the mold pressing first time in a three-dimensional structure of being with projection and sunk part to replace, gluing on one deck therein then, and link together in the two-layer nip between two mold pressing roll, so the jut of each layer is bonding mutually.A kind of similar mould pressing method is shown in EP-A-738588, and according to this method, glue also has the effect of colouring.
WO95/08671 discloses an example that is called superimposed mold pressing, and wherein, two independent embossed plies jut by a layer is embedded in the sunk part of opposite layer and combination and linking together.
Can recognize a kind of method of lamination two layers of paper by US-A-5443889, every layer of paper supplies on the pattern roller, and described pattern roller has jut and sunk part alternately, and when a layer is positioned on the pattern roller glue is coated on this layer.Stick together in the gap of two layers of paper between two pattern rollers then, two pattern rollers are aligned with each other, and therefore produce the connection and the pressurization of ply of paper in a pattern corresponding with the jut of pattern roller.
With the embossed paper of pressurizeing in a point relevant shortcoming is that the intensity of mold pressing and glue-applying point obviously reduces, and this can influence the strength characteristics of whole tissue products.Compare with corresponding non-embossed paper, it is not rare that the intensity of embossed paper reduces up to 70%.
US-A-3672950 discloses a kind of manufacturing a kind of filling (quilted) or the method for tissue products of the bonding lamination of liner has been arranged, in this method, be coated on the ply of paper with certain pattern in the nip of glue between one first pattern roller and roller platen.Be laminated in the nip of this layer between the same roller platen and second pattern roller another layer on, second pattern roller has a pattern corresponding with the pattern of first pattern roller, and with the first pattern roller driven in registry.In lamination process, therefore two-layer stress condition difference produces product filling or that liner is arranged.
Summary of the invention
The object of the present invention is to provide the manufacture method of a kind of multilayer soft material, soft material for example is paper and non-woven material and their combination, and wherein, at least two soft material layer are laminated together.Lamination is very light for this material, thus the layer material structure with and strength character be maintained substantially.And the absorbent properties of final products and volume should be higher.
According to the present invention, one first pattern roller is contacted with a glue spreading apparatus, first pattern roller has the three-D pattern that protuberance and recess replace, with pattern corresponding to the protuberance tip configurations, in one first nip, glue is coated on first shape soft material, the pattern configuration of first pattern roller can be selected, make glue be coated on the glue point of ground floor, the area that glue point covers is corresponding to the 0.03-9% of the gross area of first shape soft material, and be distributed in dispersedly on the whole substantially zone of first shape soft material, second shape soft material contacts in one second nip with the coated face of first shape soft material, this second nip is between one second pattern roller and pressure roller, second pattern roller has the protuberance of the corresponding described first pattern roller pattern and the three-D pattern that recess replaces, described first and second layers material tension force is equal substantially when sending into described second nip, first and second pattern rollers are aligned with each other, make first and second shape soft materials merge with the pattern groups corresponding to the top configuration of the first pattern roller protuberance and bond together.
By this processing, will not have the real mold pressing of the web shaped material relevant, but only layer is bonded together in the mode of glue pattern with lamination.Therefore can avoid the intensity of final products to reduce when forming volume between the layer between glue point, this volume has increased volume and absorbent properties.Volume between the separates layers keeps after laminating operation substantially further.
According to an embodiment, glue is coloured glue.
In one embodiment of the invention, at least one deck be applied in a three-D pattern before relative layer carries out lamination.
According to another embodiment of the invention, the two-layer at least three-D pattern that before lamination, has been applied in, the pattern that is located on two-layer at least has different structure, and for example a pattern is meticulousr, and another pattern is more coarse.
According to still a further embodiment, the lines of one deck by glue or cured binders, for example latex are strengthened at least.Described curing agent solidifies after lamination.
The size of each glue point should be at 0.15-150mm 2, be preferably 0.5-100mm 2, be more preferably 1-15mm 2In another embodiment, each glue point is of a size of 150-400mm 2The quantity of the glue point on the per unit area should reach every square metre of 25-350000, be preferably 300-180000, be more preferably 800-50000 glue point, it is to be noted that glue point is distributed on the whole zone of a shape soft material regularly, but they can distribute brokenly also, for example arrange with isolated group form.
Refer to such an extent that be the arbitrary shape of glue point in the term place aspect this, for example point, straight line, figure, letter, imagination pattern or any required shape.
The invention still further relates to a kind of multilayer soft material, for example paper and non-woven material, it comprises at least one ground floor and second layer that links together by the glue point that forms the glue pattern, wherein, the 0.03%-9% of the gross area of the regional respective layer that glue point covers and being distributed in substantially dispersedly on the whole zone of layer, and an outer surface of the described multilayer material just in time relative with glue point does not have substantially, and the opposed outer surface of described multilayer material has the slight impression in the material with the join dependency of layer.
In subsequently description and claim, disclosed further feature of the present invention.
Description of drawings
Fig. 1 illustrates the diagrammatic side view of the device of implementing the inventive method.
Fig. 2 is the schematic sectional view of the embodiment of two layers of paper product constructed in accordance.
Fig. 3 a-3c is the plane according to some the glue patterns on the ply of paper of the present invention.
Fig. 4 is the schematic sectional view according to an embodiment of three-ply paper of the present invention.
The specific embodiment
Fig. 1 illustrates the device that is used to make two layers of material, for example paper, especially thin paper.First paper, 1 a process roller 2 is carried to the gluing station.This gluing station comprises from wherein glue being coated onto the glue chamber 3 on the glue transfer roller 4.Glue transfer roller 4 contacts with first pattern roller 5 that is provided with the pattern that is made of protuberance 6 that replaces and recess 7 along its circumference.4 tops with protuberance 6 of glue transfer roller contact, thereby only glue are coated with thereon.Paper 1 nip 8 that enters between the pressure roller 9 of first pattern roller 5 and central authorities' placement.Thus glue is coated on first paper 1 with the corresponding pattern of top configuration of protuberance 6.Be in pressure in the nip between pattern roller 5 and the pressure roller 9 only for enough big to be used for realizing the transfer of glue on paper 1.Yet paper is best indeformable, and promptly the protuberance 6 of pattern roller 5 does not have impression on paper.
Nip 12 between the pressure roller 9 that pattern roller 13 and central authorities are provided with is being carried and entered to second paper 10 above the roller 11.Second pattern roller 13 has the three-D pattern that is made of protuberance 14 and recess 15 corresponding to the pattern of first pattern roller 5.In this respect, term " corresponding to " each has the shape and size active surface zone identical with first pattern roller 5 to mean protuberance 14, but, this identical shape has the active surface zone bigger than the protuberance 6 of first pattern roller 5, so that extend to the outside of the external peripheral surface of the glue point that is provided with by pattern roller 5 or different shape with greater than the active surface of the protuberance 6 of first pattern roller 5.For example, the glue pattern that is provided by first pattern roller 5 can be a plurality of forms with three round dots of leg-of-mutton patterned arrangement shown in Fig. 3 a, wherein, the protuberance 14 of each second pattern roller 13 and glue pattern are identical or be slightly larger than the glue pattern, perhaps for example can be the form of the triangle 20 that covers these three round dots.Under all these situations, the relative position of two pattern rollers 5,13 corresponds to each other.
A material tension force of the described ground floor 1 and the second layer 10 is equal substantially when they are transported in second nip 12.Therefore in lamination process, will not have and shorten effect (foreshortening effect).Two pattern rollers 5 and 13 mutual driven in registry, thus first ply of paper 1 and second ply of paper 10 are with corresponding to the pattern extruding of the structure of the glue pattern that is provided by first pattern roller 5 with bond together.
As shown in Figure 1, preferably a central impression roll 9 is used for first pattern roller 5 and second pattern roller 13.But, can also in first pattern roller 5 and second pattern roller 13, use two independent pressure rollers certainly, and make them synchronous, drive thereby make them aim at ground.
Equally, the pressure in second nip should less or only be enough to implement two paper 1 and 10 are bonded together.Pressure in second nip be not more than form with face the second layer 10 of second pressure roller 13 in the pressure of the just relative slight impression of glue point.
The opposed outer surface of described multilayer material, promptly the surface in the face of central impression roll 9 will keep its structure not to be subjected to the influence of laminating operation substantially, and not have impression in the material relative with glue point.The multi-layered product of lamination is by label 16 expressions.
Pattern on two pattern rollers 5 and 13 can be arbitrarily, but can select, thus make glue be coated on the paper 1 amount corresponding to the whole surface area of paper 1 0.03% to 9%, be preferably 0.1% to 6%.In this case, glue point is distributed on the whole zone of basic laminate product dispersedly.The method according to this invention can provide fully clearly glue point, wherein needs very a spot of glue.Mean like this at aspects such as flexibility, drapability, absorbabilities and have advantage.In this case, the glue pattern comprises a plurality of discrete glue points, and the quantity of the glue point of per unit area reaches every square metre of 25-350000 glue point, is preferably every square metre of 300-180000 glue point, is more preferably every square metre of 800-50000 glue point.According to an embodiment, the size of each glue point reaches 0.15-150mm 2, be preferably 0.5 to 100mm 2, and 1-15mm more preferably 2According to another optional embodiment, each glue point is of a size of 150-400mm 2, it has adopted and has comprised that for example width is some synthetic glue patterns of the fine rule of 1mm, is used for forming for example symbol or decorative pattern.In such embodiments, every square metre glue number of spots is the lower portion in the above-mentioned interval, for example less than 800.
Under the situation of the big glue point that uses screened patterns, this means that each glue pattern unit is made of a plurality of little sieve points.In this case, the dimension definitions of glue point is the circumscribed area of the combination of the sieve point of a glue pattern unit of formation.
According to another embodiment, the continuous lines of network constitute the glue pattern by for example forming.
Preferred glue is generally the glue that is used for paper, carboxymethyl cellulose (CMC) for example, polyvinyl alcohol (PVOH), ethane-acetic acid ethyenyl (EVA), polyvinyl acetate (PVAc), ethylene acrylic, vinyl acetate acrylic acid, styrene acrylic, polyurethane, polyvinylidene chloride, starch, converted starch, dextrin, water-soluble polymer, for example latex and natural or synthetic rubber or plastics are suspended in the liliquoid in the water.Under the situation of web shaped material, select to be fit to the glue of these materials certainly for other material except that paper.
Preferably use the higher relatively glue of solids content, because make that like this location of glue point is clear.
Can also use coloured glue, it can bring visual effect and bring pattern effect to material thus.
The embodiment of two layers of paper manufactured according to the present invention shown in Figure 2 wherein is illustrated in glue point between two ply of papers 1,10 with reference number 17.Glue point 17 between two ply of papers 1,10 is empty and does not adhere to each other, forms volume and absorbability that space 18 is used for improving material, these performances for as soft paper for very important, kept the cumulative volume of the layer that separates after the lamination substantially.Second ply of paper 10 is just in time relative with the glue point with the slight impression 19 that is formed by pattern roller 13.
Fig. 3 a-3c illustrates the embodiment of some glue patterns, and the glue point 17 of dispersion that wherein is the form of round dot or lines is arranged, to form different patterns.Glue point 17 also can be the form of continuous lines bar, for example forms netted pattern.
The paper of lamination 1,10 can be smooth, also can be have by in front process, for example the forming of paper, dehydration and/or dry during the three-dimensional structure that provided.Can also before lamination, provide three-dimensional structure by a paper feeding mold pressing.The method according to this invention to such pattern be very light and, complete thereby pattern has kept in lamination process substantially.
Fig. 4 illustrates an embodiment of three-ply paper, wherein before lamination, has applied three-D pattern on layer 1,10 and 20, for example by mold pressing.The structure of mold pressing pattern is different, thereby the pattern configuration in intermediate layer 10 is more coarse than the pattern configuration of two skins 1 and 20.Obtain having the product of large volume thus.As disclosed can being provided with respect to the glue point skew ground between layer 10 and layer 20, perhaps can be provided with relative to one another at the glue point 17 between layer 1 and the layer 10.Can certainly use other combination outside shown in Fig. 4 with different mold pressing patterns.If two skins have different compression-molded structures, for example a more coarse side and a more level and smooth side can be formed on the multi-layered product that has different structure on the opposite face.Also can use the mold pressing pattern that is called little filling (mircoquilted).Also can not carry out mold pressing to one or more layer.Under the situation of two-layer product,, then can obtain two-sided product if to one deck mold pressing and another layer do not carry out mold pressing or have different compression-molded structures.
The mold pressing pattern that is used for different layers also can be identical.In this case, these layers are molded and connect and separated from each other before lamination by the method according to this invention subsequently.They also can mold pressing individually before lamination.
A very important advantage of the present invention is that paper has kept its strength characteristics substantially by pressing layer process.In many other laminating technologies, the mold pressing of paper is relevant with lamination with the appearance of distortion, and the strength characteristics of paper reduces.Multilayer at lamination has under the situation of level and smooth substantially structure, and it can be transformed into fine and close volume or folded products, means conserve space and cost like this.
If desired, because the strong layer bonding that is provided on glue point, the multi-layered product of lamination also can be molded after laminating operation, therefore forms softer material.Because by the significant bonding effect that is provided with second pattern roller 13 that glue transferring roller 4 drives with aiming at, obtained effective layer bonding.When the conversion paper product, when rolling, this layer adhesive effect can not reduce.
Certainly, the ply of paper of three or more can be by above-mentioned method lamination.Two or more layer can enter first and/or second nip thus.
In different layers, can use the dissimilar paper that on absorbability, basis weight, production technology, fibrous, chemical bonding agent, has different qualities.
This method also is applicable to wherein porose ply of paper, because the major part in hole is normal when these layers are bonded together through being complete behind the laminating operation and not filled by glue like this.
At least one ply of paper further strip by glue or cured binders, for example latex is strengthened.This reinforcement for example can be carried out the outside at laminate product after lamination, and aims at laminating operation.Under the situation of cured binders, paper product for example is cured by heat treatment behind lamination.When strengthening ply of paper by this way, can use very thin material, otherwise be out of use, because undercapacity when operating in transfer process or in distributor.
Multilayer material can convert any required product to, for example coiled material, folding towel, cleansing tissue, handkerchief, napkin etc.Use multilayer material to have superiority in being called the centreless reel of central supply, wherein, paper takes out from the center of reel.For a kind of traditional multilayer material, layer with layer between be connected by mold pressing, the material of inner ring can not become gratifying product, this circle is greatly compressed, thereby mold pressing is damaged more or less.On the other hand, in multilayer material according to the present invention, the lamination of layer separates with any pattern effect that is provided by mold pressing, and therefore, the inner ring of centreless reel also will become useful product.

Claims (34)

1. make the method for multilayer soft material (14) by adhesive linkage, soft material for example is paper and non-woven material, it is characterized by, one first pattern roller (5) is contacted with a glue spreading apparatus (4), first pattern roller has the three-D pattern that protuberance (6) and recess (7) replace, with pattern corresponding to protuberance (6) tip configurations, in one first nip (8), glue is coated on one first the shape soft material (1), the pattern configuration of first pattern roller (5) can be selected, make glue be coated on the glue point (17) of ground floor (1), the area that glue point covers is corresponding to the 0.03-9% of the gross area of first shape soft material (1), and be distributed in dispersedly on the whole substantially zone of first shape soft material (1), one second shape soft material (10) contacts in one second nip (12) with the coated face of first shape soft material (1), this second nip is between one second pattern roller (13) and a pressure roller (9), second pattern roller has the protuberance (14) of corresponding described first pattern roller (5) pattern and the three-D pattern that recess (15) replaces, described first and second layer (1,10) a material tension force equates when sending into described second nip (12), first and second pattern rollers (5,13) aligned with each other, make first and second shape soft materials (1) merge and bond together with pattern groups corresponding to the top configuration of first pattern roller (5) protuberance (6).
2. method according to claim 1 is characterized by, and glue is coated on the described ground floor (1) at glue point (17), and the area that described glue point covers is corresponding to the 0.1-6% of the gross area of first shape soft material (1).
3. claim 1 or 2 described methods, it is characterized by, the area of the pattern that is provided by the protuberance (14) of second pattern roller (13) makes the pattern of second pattern roller (13) that the outside of the glue point (17) that is provided by first pattern roller (5) is provided greater than the pattern that the protuberance (6) by first pattern roller (5) is provided.
4. method according to claim 1 and 2 is characterized by, and described glue is coloured glue.
5. method according to claim 1 and 2 is characterized by, at least one layer (1,10) with relative pressure layer by layer before be applied in a three-D pattern, described pattern is when layer is to wet, between wet layer dry period and/or be provided under drying regime.
6. method according to claim 5 is characterized by, and at least two layers (1,10) were applied in a three-D pattern before lamination, and the pattern that is positioned at least two layers has different structure, and for example a pattern is meticulous relatively, and another pattern is coarse relatively.
7. method according to claim 1 and 2 is characterized by, and by tree lace or cured binders at least one layer is strengthened.
8. method according to claim 7 is characterized by, and described binding agent is a latex.
9. method according to claim 7 is characterized by, and solidifies described binding agent after lamination.
10. method according to claim 1 and 2 is characterized by, and the size of each glue point (17) reaches 0.15-150mm 2
11. method according to claim 1 and 2 is characterized by, the size of each glue point (17) reaches 0.5-100mm 2
12. method according to claim 1 and 2 is characterized by, the size of each glue point (17) reaches 1-15mm 2
13. method according to claim 1 and 2 is characterized by, the size of each glue point (17) reaches 150-400mm 2
14. method according to claim 1 and 2 is characterized by, the quantity of the glue point (17) on the per unit area is every square metre of 25-350000 glue point.
15. method according to claim 1 and 2 is characterized by, the quantity of the glue point (17) on the per unit area is every square metre of 300-180000 glue point.
16. method according to claim 1 and 2 is characterized by, the quantity of the glue point (17) on the per unit area is every square metre of 800-50000 glue point.
17. multilayer soft material (16), for example paper and non-woven material, it comprises at least one ground floor (1) and a second layer (10), by bonding connecting together at the glue point (17) that forms the glue pattern, it is characterized by, the area that described glue point (17) covers is corresponding to the 0.03-9% of the gross area of described layer, and be distributed in dispersedly on the whole zone of described layer, and an outer surface of the described multilayer material just relative with glue point (17) does not have impression, the opposed outer surface of described multilayer material have with the material of the join dependency of layer (1,10) in slight impression (19).
18. multilayer material according to claim 17 is characterized by, the gross area that glue point (17) occupies is about the 0.1-6% of the total surface area of layer (1,10) separately.
19. according to claim 17 or 18 described multilayer materials, it is characterized by, the size of each glue point (17) reaches 0.15-150mm 2
20. according to claim 17 or 18 described multilayer materials, it is characterized by, the size of each glue point (17) reaches 0.5-100mm 2
21. according to claim 17 or 18 described multilayer materials, it is characterized by, the size of each glue point (17) reaches 1-15mm 2
22. according to claim 17 or 18 described multilayer materials, it is characterized by, the size of each glue point (17) reaches 150-400mm 2
23. according to claim 17 or 18 described multilayer materials, it is characterized by, the glue in the glue point (17) is coloured.
24. according to claim 17 or 18 described multilayer materials, it is characterized by, at least one layer (1,10) with have a three-D pattern before relative layer connects.
25. multilayer material according to claim 24 is characterized by, at least two layers (1,10) with have a three-D pattern before relative layer connects, described pattern on two-layer at least has different structures.
26. multilayer material according to claim 25 is characterized by, in described pattern on two-layer at least, a pattern is meticulous, and another pattern is coarse.
27. according to claim 24 or 25 described multilayer materials, it is characterized by, multilayer material has the outside and an outside that has the structure of a smoother that has a coarse three-dimensional structure.
28. according to claim 17 or 18 described multilayer materials, it is characterized by, multilayer material has three layers at least, one of them intermediate layer has a coarse three-dimensional structure.
29. according to claim 17 or 18 described multilayer materials, it is characterized by, strengthen at least one layer by tree lace or cured binders.
30. multilayer material according to claim 29 is characterized by, described binding agent is a latex.
31., have the hole at least one layer (1,10) according to claim 17 or 18 described multilayer materials.
A 32. convolution stacker towel, cleansing tissue, handkerchief, a shape material such as napkin paper, it is characterized by, described shape material is multilayer soft material (16), for example paper and non-woven material, it comprises at least one ground floor (1) and a second layer (10), by bonding connecting together at the glue point (17) that forms the glue pattern, the area that described glue point (17) covers is corresponding to the 0.03-9% of the gross area of described layer, and be distributed in dispersedly on the whole zone of described layer, and an outer surface of the described multilayer material just relative with glue point (17) does not have impression, the opposed outer surface of described multilayer material have with the material of the join dependency of layer (1,10) in slight impression (19).
33. according to claim 32 shape material webs is characterized by, described volume is the coreless roll of central supply.
34. according to claim 32 or 33 described shape material products, it is characterized by, described shape material is thin paper.
CNB038034778A 2002-02-26 2003-02-26 Method and device for producing a multi-ply web of flexible material, such as paper and nonwoven, and multi-ply material produced by the method Expired - Fee Related CN100351073C (en)

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EP1478506B1 (en) 2007-07-18
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ES2289272T3 (en) 2008-02-01
CN1628025A (en) 2005-06-15

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