CN110670239A - Nonwoven water distribution transfer paper and preparation method thereof - Google Patents

Nonwoven water distribution transfer paper and preparation method thereof Download PDF

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Publication number
CN110670239A
CN110670239A CN201910982103.5A CN201910982103A CN110670239A CN 110670239 A CN110670239 A CN 110670239A CN 201910982103 A CN201910982103 A CN 201910982103A CN 110670239 A CN110670239 A CN 110670239A
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wood pulp
polylactic acid
fiber
layer
treatment
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CN110670239B (en
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王怡婷
钱程
方瑞峰
李树卿
李海东
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Jiaxing University
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Jiaxing University
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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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C15/00—Calendering, pressing, ironing, glossing or glazing textile fabrics
    • D06C15/02—Calendering, pressing, ironing, glossing or glazing textile fabrics between co-operating press or calender rolls
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The invention discloses non-woven water distribution transfer paper and a preparation method thereof, and relates to the technical field of crossing of spinning and water transfer printing. According to the non-woven water distribution transfer paper and the preparation method thereof, the wood pulp fiber, the polylactic acid bicomponent fiber and the polylactic acid fiber are reasonably selected, the special double-layer fiber web structure is selected and regulated, the spunlace reinforcement and the hot pressure setting process are adjusted, and the non-woven fabric is creatively applied to the water transfer technology, so that the prepared non-woven water distribution transfer paper has the technical effects of good size, difficulty in edge curling in water, small product thickness and gram weight, short preparation process, low preparation cost, safety and environmental protection while having excellent strength.

Description

Nonwoven water distribution transfer paper and preparation method thereof
Technical Field
The invention relates to the technical field of crossing of spinning and water transfer printing, in particular to non-woven water distribution transfer printing paper and a preparation method thereof.
Background
The water transfer printing technology is to utilize the pressure of water to dissolve and transfer a stripping layer on a water transfer printing carrier, so that a pattern is transferred and pasted on the surface of a printing stock, and the principle of indirect printing solves the difficult problems of decoration and printing of a plurality of surfaces with special shapes. The water transfer printing carrier is usually made of special paper, plays a very critical role in the water transfer printing process, people transfer patterns to the surfaces of printing stocks of special shapes and materials, such as ceramics, metals, woods, cloth, glass, plastics, crystals and the like, by using the water transfer printing paper, complex procedures such as steaming, color fixation, water washing and the like which are necessary to be carried out by the traditional textile printing are not needed, the operation process is simple, the transferred patterns are bright in color, rich in layers, exquisite and vivid, durable and high in added value of products.
The water transfer printing paper as the main body of the transfer printing needs to have good stiffness and toughness, good tensile strength, good smoothness and evenness and good dimensional stability, while the gram weight of the water transfer printing paper produced in the prior country exceeds 140g/m for obtaining enough stiffness and strength2However, the problems that after the transfer paper is immersed in water, the transfer paper is warped and rolled and the pattern is easy to deform still exist, and the quality of the printed pattern is further influenced.
In order to avoid the phenomena of edge warping and pattern deformation of the water transfer paper in water, the prior art proposes a preparation process of a multi-base-layer multi-coating layer, for example, patent CN201611253132.0 discloses a water transfer paper produced by coating a multi-layer paper base material, wherein the water transfer paper produced by coating the multi-layer paper base material sequentially comprises a back coating layer, a base material layer, a bottom coating layer, a core coating layer and a top coating layer from bottom to top; the substrate layer is formed by overlapping and compounding a plurality of pieces of wet paper, and sequentially comprises a bottom layer, a core layer and a coating layer from bottom to top; the patent is a paper substrate with a multilayer structure, has certain stiffness and distinct layers, but needs to coat a bottom layer, a core layer and a surface layer respectively, and has a complex production process; patent CN201620508209.3 discloses a water transfer paper of dissoluble, including table picture layer, basement membrane layer and the former paper base layer of from top to bottom folding system in proper order, be equipped with pigment coating between basement membrane layer and the former paper base layer, the lower surface of former paper base layer is scribbled and is equipped with and prevents a back of a roll coating, table picture layer upper surface is scribbled and is equipped with the prevention the dizzy layer that table picture layer printing ink dizzy open, dizzy layer upper surface coating is equipped with the gold oil layer. The anti-corona layer is arranged on the surface picture layer, so that the patterns are prevented from being easily diffused and deformed in water, the anti-rolling back coating can prevent the phenomena of edge rolling, rolling and the like of paper in water, but the problems of complex process and high production cost exist; patent CN200720196340.1 discloses a water transfer paper comprising: the pattern on the surface of an object after transfer printing is clear and stable, and can fully meet the use requirements of people; patent CN201210044741.0 discloses a water transfer paper and a preparation method thereof, the water transfer paper sequentially comprises a hydrosol layer, a film-forming adhesive layer, a carrier base paper and a reverse side adhesive layer from top to bottom, the reverse side adhesive layer is a starch layer; the film-forming adhesive layer sequentially comprises an activity colloid layer and a white colloid layer from top to bottom, the activity colloid layer is obtained by coating and drying a mixed aqueous solution of a whitening agent and starch, the mass fractions of the whitening agent and the starch are 0.5-1% and 35-45%, respectively, and the white colloid layer is a starch layer; the water sol layer is obtained by coating and drying a mixed water solution of kaolin, butylbenzene emulsion, a dispersing agent and polyvinyl alcohol, and the mass fractions of the kaolin, the butylbenzene emulsion, the dispersing agent and the polyvinyl alcohol are 40% -50%, 10% -15%, 1% -3% and 3% -5%, respectively. The water transfer paper has smooth surface, reasonable thickness of the coating glue layer, high demoulding speed, uniform water absorption and uniform and smooth glue surface.
In the process of implementing the invention, the inventor finds that the related art has at least the following problems:
the water transfer paper prepared by the existing water transfer printing technology is composed of multiple layers, the base layer is a raw paper layer, the number of layers of the coating needs to be increased on the basis of the raw paper in order to improve the stiffness, the uniformity and the smoothness of the paper, in addition, the square meter weight and the thickness of the raw paper are higher, the preparation process of the water transfer paper has the technical problems of longer preparation flow, larger product thickness and gram weight and higher preparation cost.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides non-woven water distribution transfer printing paper and a preparation method thereof.
According to a first aspect of the embodiments of the present invention, there is provided a method for producing a nonwoven water transfer printing paper, the method comprising:
(1) carrying out hydraulic pulp opening treatment and mechanical pulping treatment on a softwood pulp plate with the brightness of 85-88% in sequence to obtain wood pulp slurry with the concentration of 3.0-3.4%, sending the wood pulp slurry into a pulp distribution pool, uniformly mixing, adding water for diluting to reduce the concentration of the wood pulp slurry to 0.08-0.12%, controlling the pulp-net speed ratio to be 0.85-0.88, the frequency to be 110-times/min and the amplitude to be 8-11mm, and forming by an inclined net former to obtain the softwood pulp with the gram weight of 40-60g/m2A wood pulp web layer of;
(2) uniformly mixing polylactic acid bicomponent fiber and polylactic acid fiber according to the mixing ratio of 75-85:15-25 to form mixed fiber, and opening and carding the mixed fiber web in sequence to obtain the mixed fiber web with the gram weight of 22-40g/m2The polylactic acid fiber web layer adopts the process parameters of the opening procedure which comprise: two times of coarse opening and one time of fine opening are adopted, the linear speed of the opening roller is respectively 750m/min for 600 plus materials, 900 m/min for 770 plus materials and 1000 m/min for 950 plus materials, the speed of the main cylinder is 950m/min for 810 plus materials, and the speed ratio of the cylinder to the working roller is 14.3-18.6: 1;
(3) carrying out spunlace reinforcement on the wood pulp fiber net layer and the polylactic acid fiber net layer by adopting 4 groups of spunlace heads to obtain the wood pulp fiber/polylactic acid fiber composite fiber net, wherein the technological parameters adopted in the spunlace reinforcement process comprise: the water jet pressure is 20-35bar, 40-55bar, 55-70bar, 68-80 bar;
(4) sending the wood pulp fiber/polylactic acid fiber composite fiber web into an oven for drying treatment and then winding to obtain the wood pulp fiber/polylactic acid fiber composite fiber web with the gram weight of 60-100g/m2The wood pulp fiber web/polylactic acid fiber composite non-woven fabric adopts the following technological parameters in the drying treatment process: adopting four groups of drum dryers to sequentially carry out pre-drying and baking treatment, wherein the temperature of the first group of pre-drying drums is 95-100 ℃, the temperature of the other three groups of baking drums is 105-120 ℃, and the drying speed is 70-80 m/min;
(5) adopting a four-roll calender to carry out calendering treatment on the wood pulp fiber web/polylactic acid fiber composite non-woven fabric, and then obtaining a non-woven fabric base fabric with the thickness of 0.095-0.124mm after slitting treatment, wherein the calendering treatment process adopts the following technological parameters: the temperature of the first group of preheating rollers is 80-90 ℃, the temperature of the second group of calendering rollers is 110-120 ℃, and the linear pressure is 10-15 tons;
(6) unreeling the non-woven fabric base cloth, conveying the non-woven fabric base cloth to a roller type coating machine for surface coating treatment, drying and winding to obtain non-woven fabric water transfer printing paper, wherein the coating liquid adopted in the surface coating treatment process is prepared from the following components in percentage by weight of 90-95: 5-10 parts of PVA and glycerol, and the viscosity of the coating liquid is 0.85-1.05 Pa.s.
In a preferred embodiment, the length of the polylactic acid bicomponent fiber in the step (2) is 38mm, the fineness of the polylactic acid bicomponent fiber is 1.5D, and the length of the polylactic acid fiber is 38-51mm, and the fineness of the polylactic acid fiber is 1.5-3D.
In a preferred embodiment, the hydraulic pulping process in the step (1) comprises:
carrying out hydraulic opening treatment on the softwood pulp board and crushing to obtain wood pulp slurry, wherein the length of wood pulp fibers in the wood pulp slurry is 2-5mm, the width of the wood pulp fibers is 36.5-60.8 mu m, the opening concentration is controlled to be 3.0-3.5% in the hydraulic opening treatment process, and the opening time is 30-50 min;
the mechanical pulping treatment process in the step (1) comprises the following steps:
and carrying out mechanical pulping treatment on the wood pulp obtained by hydraulic pulping treatment, wherein the pulping concentration is controlled to be 3.0-3.4%, the pulping degree is 27-29 DEG SR, and the wet weight is 13-14g in the mechanical pulping treatment process.
In a preferred embodiment, the process parameters adopted in the surface coating treatment process in the step (6) comprise: the pressure between the two rollers is 0.189-0.212MPa, the gap is 0.1-0.2mm, the angle of the scraper is 0-90 ℃, the coating and drying temperature is 125 ℃ in the first zone, 120 ℃ in the second zone, 110 ℃ in the third zone and 0.7-0.95g/m of coating amount2The thickness of the coating layer is 25-35 μm.
In a preferred embodiment, the PVA in step (6) is at least one of PVA1788, PVA1799 and PVA2488 in a mass concentration of 7-15%.
In a preferred embodiment, after the formation of the wood pulp web layer in step (1), the wood pulp web layer is conveyed at a speed of 100-120m/min and is stacked on the polylactic acid web layer.
According to the second aspect of the embodiment of the invention, the nonwoven water distribution transfer paper is prepared by any one of the preparation methods of the nonwoven water distribution transfer paper, the nonwoven water distribution transfer paper sequentially comprises a PVA coating layer, a wood pulp fiber web layer and a polylactic acid fiber web layer from top to bottom, and the PVA coating layer is prepared by mixing the following components in a ratio of 90-95: 5-10 of PVA and glycerol.
Compared with the prior art, the non-woven water distribution transfer printing paper and the preparation method thereof provided by the invention have the following advantages:
1) the product is innovative. The non-woven fabric is applied to the field of water transfer printing for the first time, and has the advantages of high production speed, short production flow and high efficiency, so that the non-woven fabric is used for replacing paper for water transfer printing paper, has high strength, good wet strength, stable size and low quantification, can be transferred in water without a back coating without curling, has smooth surface and is easy to peel off from a PVA water-soluble film, the printing quality of transfer printing and the surface of a printing stock is further improved, and the problems of low wet strength, easy curling in water, high gram weight and the like of the existing water transfer printing paper are solved.
2) The process is innovative. The product of the invention adopts a double-layer structure, the surface layer is composed of softwood pulp fibers, and the fine surface with uniformly distributed micro fibers is easier to obtain through the control of reasonable pulping and beating process parameters; the lower layer is composed of polylactic acid bi-component fibers and polylactic acid fibers, after spunlace reinforcement, drying and subsequent heat setting with pressure, the skin layer of the polylactic acid bi-component fibers is melted to bond surrounding fibers together, and the core layer serves as a framework to play a supporting role, so that the polylactic acid bi-component fibers and the polylactic acid fiber web layer have enough hardness to provide strength, necessary stiffness and dimensional stability for the whole product, and therefore, the non-woven water distribution transfer paper with fine and smooth surface, stiffness and stable size is obtained through good control of raw materials and processes.
3) Is safe and environment-friendly. The invention takes wood pulp and polylactic acid fiber as raw materials, and is finally obtained by PVA coating finishing, the PVA has water solubility, no other auxiliary agent is added in the production process of the product, and the whole product is completely degradable; in addition, the product has better strength, and can obtain good water transfer printing performance at low gram weight, so that the used raw materials are few, the existing water transfer printing paper does not need to be coated with a base coat, the production procedures are reduced, the production cost is finally reduced, and the product completely belongs to a green and low-carbon degradable product.
In summary, according to the nonwoven water distribution transfer paper and the preparation method thereof provided by the invention, the wood pulp fiber, the polylactic acid bicomponent fiber and the polylactic acid fiber are reasonably selected, the special double-layer fiber web structure is selected and regulated, the spunlace reinforcement and the hot pressure setting process are adjusted, and the nonwoven fabric is creatively applied to the water transfer technology, so that the prepared nonwoven water distribution transfer paper has the technical effects of good strength, good size, difficult edge curling in water, small product gram weight and thickness, short preparation process, low preparation cost, safety and environmental protection.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flow chart illustrating a method of manufacturing a nonwoven water transfer sheet according to an exemplary embodiment.
Fig. 2 is a schematic diagram of a product of a nonwoven water-distribution transfer paper according to an exemplary embodiment.
Detailed Description
The present invention is described in detail below with reference to specific embodiments (but not limited to) and the accompanying drawings, the specific method of the embodiments is only for illustrating the invention, the scope of the invention is not limited by the embodiments, the invention can be applied to various modifications and changes of shape and structure, and these equivalents based on the invention are also within the scope of the claims of the present invention.
It should be noted that the softwood pulp sheet adopted in the embodiment of the present invention may be any one of northern canada brand softwood pulp, canada river brand softwood pulp, Yujing brand pinus sylvestris pulp, Stone brand southern pine pulp and GP brand southern pine pulp softwood pulp.
Fig. 1 is a flow chart illustrating a method of manufacturing a water-nonwoven transfer paper according to an exemplary embodiment, as shown in fig. 1, the method including:
step (1): carrying out hydraulic pulp opening treatment and mechanical pulping treatment on a softwood pulp plate with the brightness of 85-88% in sequence to obtain wood pulp slurry with the concentration of 3.0-3.4%, sending the wood pulp slurry into a pulp distribution pool, uniformly mixing, adding water for diluting to reduce the concentration of the wood pulp slurry to 0.08-0.12%, controlling the pulp-net speed ratio to be 0.85-0.88, the frequency to be 110-times/min and the amplitude to be 8-11mm, and forming by an inclined net former to obtain the softwood pulp with the gram weight of 40-60g/m2A wood pulp web layer.
Wherein, the wood pulp fiber with longer length can be obtained by the hydraulic pulp opening treatment, and the subsequent entanglement performance of the wood pulp fiber is further increased by the mechanical pulping treatment.
Step (2): uniformly mixing polylactic acid bicomponent fiber and polylactic acid fiber according to the mixing ratio of 75-85:15-25 to form mixed fiber, and opening and carding the mixed fiber web in sequence to obtain the mixed fiber web with the gram weight of 22-40g/m2The polylactic acid fiber web layer adopts the process parameters of the opening procedure which comprise: adopting two times of coarse opening and one time of fine opening, and the linear speed of opening rollerThe degrees are respectively 600-750m/min, 770-900 m/min and 950-1000 m/min, the main cylinder speed is 810-950 m/min, and the speed ratio of the cylinder to the working roll is 14.3-18.6: 1.
it should be noted that, in the embodiment of the present invention, the steps of preparing the wood pulp web layer and the polylactic acid web layer in the steps (1) and (2) may be performed simultaneously.
And (3): carrying out spunlace reinforcement on the wood pulp fiber net layer and the polylactic acid fiber net layer by adopting 4 groups of spunlace heads to obtain the wood pulp fiber/polylactic acid fiber composite fiber net, wherein the technological parameters adopted in the spunlace reinforcement process comprise: the water jet pressure is 20-35bar, 40-55bar, 55-70bar, and 68-80 bar.
And (4): sending the wood pulp fiber/polylactic acid fiber composite fiber web into an oven for drying treatment and then winding to obtain the wood pulp fiber/polylactic acid fiber composite fiber web with the gram weight of 60-100g/m2The wood pulp fiber web/polylactic acid fiber composite non-woven fabric adopts the following technological parameters in the drying treatment process: four groups of drum dryers are adopted to sequentially carry out pre-drying and baking treatment, wherein the temperature of the first group of pre-drying drums is 95-100 ℃, the temperature of the other three groups of baking drums is 105-120 ℃, and the drying speed is 70-80 m/min.
And (5): adopting a four-roll calender to carry out calendering treatment on the wood pulp fiber web/polylactic acid fiber composite non-woven fabric, and then obtaining a non-woven fabric base fabric with the thickness of 0.095-0.124mm after slitting treatment, wherein the calendering treatment process adopts the following technological parameters: the temperature of the first group of preheating rollers is 80-90 ℃, the temperature of the second group of calender rollers is 110-120 ℃, and the linear pressure is 10-15 tons.
And (6): unreeling the non-woven fabric base cloth, conveying the non-woven fabric base cloth to a roller type coating machine for surface coating treatment, drying and winding to obtain non-woven fabric water transfer printing paper, wherein the coating liquid adopted in the surface coating treatment process is prepared from the following components in percentage by weight of 90-95: 5-10 parts of PVA and glycerol, and the viscosity of the coating liquid is 0.85-1.05 Pa.s.
In a preferred embodiment, the length of the polylactic acid bicomponent fiber in the step (2) is 38mm, the fineness of the polylactic acid bicomponent fiber is 1.5D, and the length of the polylactic acid fiber is 38-51mm, and the fineness of the polylactic acid fiber is 1.5-3D.
In a preferred embodiment, the hydraulic pulping process in the step (1) comprises:
carrying out hydraulic opening treatment on the softwood pulp board and crushing to obtain wood pulp slurry, wherein the length of wood pulp fibers in the wood pulp slurry is 2-5mm, the width of the wood pulp fibers is 36.5-60.8 mu m, the opening concentration is controlled to be 3.0-3.5% in the hydraulic opening treatment process, and the opening time is 30-50 min;
the mechanical pulping treatment process in the step (1) comprises the following steps:
and carrying out mechanical pulping treatment on the wood pulp obtained by hydraulic pulping treatment, wherein the pulping concentration is controlled to be 3.0-3.4%, the pulping degree is 27-29 DEG SR, and the wet weight is 13-14g in the mechanical pulping treatment process.
In a preferred embodiment, the process parameters adopted in the surface coating treatment process in the step (6) comprise: the pressure between the two rollers is 0.189-0.212MPa, the gap is 0.1-0.2mm, the angle of the scraper is 0-90 ℃, the coating and drying temperature is 125 ℃ in the first zone, 120 ℃ in the second zone, 110 ℃ in the third zone and 0.7-0.95g/m of coating amount2The thickness of the coating layer is 25-35 μm.
In a preferred embodiment, the PVA in step (6) is at least one of PVA1788, PVA1799 and PVA2488 in a mass concentration of 7-15%.
In a preferred embodiment, after the formation of the wood pulp web layer in step (1), the wood pulp web layer is conveyed at a speed of 100-120m/min and is stacked on the polylactic acid web layer.
For convenience of explaining the nonwoven water distribution transfer paper provided by the embodiment of the present invention, a schematic diagram of a nonwoven water distribution transfer paper shown in fig. 2 is shown, in fig. 2, the nonwoven water distribution transfer paper sequentially includes, from top to bottom, a PVA coating layer 1, a wood pulp fiber web layer 2, and a polylactic acid fiber web layer 3, where the PVA coating layer 1 is formed by mixing, by weight, 90-95: 5-10 of PVA and glycerol.
The invention adopts a double-layer structure, the surface layer is composed of softwood pulp fibers, and the fine surface with uniformly distributed micro fibers is easier to obtain through the control of reasonable pulping and beating process parameters; the lower layer is composed of polylactic acid bi-component fibers and polylactic acid fibers, after spunlace reinforcement, drying and subsequent heat setting with pressure, the skin layers of the polylactic acid bi-component fibers are melted to bond surrounding fibers together, and the core layer serves as a framework to play a supporting role, so that the polylactic acid bi-component fibers and the polylactic acid fiber web layer have enough hardness, the physical strength of the non-woven water distribution transfer paper can be guaranteed without the design of a plurality of layers of surface layers, and the product still has strong strength while keeping smaller thickness; in addition, the surface of the wood pulp fiber layer is smooth and is easy to peel off from the PVA water-soluble film, so that the printing quality of transfer printing and the surface of a printing stock is improved, and the problems of low wet strength, easy edge curling in water, high gram weight and the like of the existing water transfer printing paper are solved.
In summary, according to the nonwoven water distribution transfer paper and the preparation method thereof provided by the invention, the wood pulp fiber, the polylactic acid bicomponent fiber and the polylactic acid fiber are reasonably selected, the special double-layer fiber web structure is selected and regulated, the spunlace reinforcement and the hot pressure setting process are adjusted, and the nonwoven fabric is creatively applied to the water transfer technology, so that the prepared nonwoven water distribution transfer paper has the technical effects of good strength, good size, difficult edge curling in water, small product gram weight and thickness, short preparation process, low preparation cost, safety and environmental protection.
Example 1
(1) Preparation of a wood pulp fiber net layer: carrying out hydraulic power pulping treatment and mechanical pulping treatment on a softwood pulp plate with the brightness of 85% in sequence to obtain wood pulp slurry with the concentration of 3.0%, sending the wood pulp slurry into a pulp distribution pool to be uniformly mixed, adding water to dilute the wood pulp slurry to reduce the concentration of the wood pulp slurry to 0.08%, controlling the pulp-net speed ratio to be 0.88, controlling the frequency to be 150 times/min and the amplitude to be 11mm, and forming the mixture by an inclined net former to obtain the softwood pulp plate with the gram weight of 40g/m2The wood pulp web layer of (1), wherein the hydropulping process comprises: carrying out hydraulic opening treatment and crushing on the softwood pulp board to obtain wood pulp slurry, wherein the length of wood pulp fibers in the wood pulp slurry is 5mm, the width of the wood pulp fibers is 60.8 mu m, the opening concentration is controlled to be 3.0% in the hydraulic opening treatment process, and the opening time is 30 min; the mechanical pulping treatment process comprises the following steps: carrying out mechanical pulping treatment on the wood pulp obtained by hydraulic pulping treatment, wherein the mechanical pulping treatment process comprises the following stepsThe pulping concentration is controlled to be 3.0 percent, the pulping degree is controlled to be 27 DEG SR, and the wet weight is 13 g.
(2) Preparation of polylactic acid fiber web layer: uniformly mixing polylactic acid bicomponent fibers and polylactic acid fibers according to a mixing ratio of 75: 25 to form mixed fibers, and opening and carding the mixed fiber webs in sequence to obtain the mixed fibers with the gram weight of 22g/m2The polylactic acid fiber mesh layer is characterized in that the length of the polylactic acid bicomponent fiber is 38mm, the fineness of the polylactic acid bicomponent fiber is 1.5D, the length of the polylactic acid fiber is 38mm, the fineness of the polylactic acid fiber is 1.5D, and the opening process adopts the following technological parameters: adopting two times of coarse opening and one time of fine opening, wherein the linear speeds of the opening rollers are respectively 600m/min, 770m/min and 950m/min, the speed of the main cylinder is 810m/min, and the speed ratio of the cylinder to the working roller is 14.3: 1.
and (2) after the wood pulp fiber web layer is formed in the step (1), conveying the formed wood pulp fiber web layer at the speed of 120m/min and stacking the formed wood pulp fiber web layer on the polylactic acid fiber web layer.
(3) A spunlace reinforcement process: carrying out spunlace reinforcement on the wood pulp fiber net layer and the polylactic acid fiber net layer by adopting 4 groups of spunlace heads to obtain the wood pulp fiber/polylactic acid fiber composite fiber net, wherein the technological parameters adopted in the spunlace reinforcement process comprise: the water jet pressure is 20bar, 40bar, 55bar and 68 bar.
(4) A drying and winding process: sending the wood pulp fiber/polylactic acid fiber composite fiber web into an oven for drying treatment and then winding to obtain the composite fiber web with the gram weight of 60g/m2The wood pulp fiber web/polylactic acid fiber composite non-woven fabric adopts the following technological parameters in the drying treatment process: four groups of drum dryers are adopted to sequentially carry out pre-drying and baking treatment, wherein the temperature of the first group of pre-drying drums is 95 ℃, the temperature of the other three groups of baking drums is 105 ℃, 110 ℃ and 120 ℃, and the drying speed is 70 m/min.
(5) And (3) calendaring and shaping: adopting a four-roller calender to calender the wood pulp fiber web/polylactic acid fiber composite non-woven fabric, and then obtaining the non-woven fabric base fabric with the thickness of 0.095mm after slitting treatment, wherein the calendering treatment process adopts the following technological parameters: the temperature of the first group of preheating rolls is 80 ℃, the temperature of the second group of calender rolls is 110 ℃, and the linear pressure is 10 tons.
(6) Coating:unreeling the non-woven fabric base cloth, conveying the non-woven fabric base cloth to a roller type coating machine for surface coating treatment, drying and winding to obtain non-woven fabric water transfer printing paper, wherein the coating liquid adopted in the surface coating treatment process is 90% by weight: 10 of PVA and glycerol, wherein the viscosity of the coating liquid is 0.85Pa.s, the PVA is PVA1788, and the mass concentration is 15%; the surface coating treatment process adopts the following process parameters: the pressure between the two rollers is 0.189MPa, the gap is 0.1mm, the angle of the scraper is 0 ℃, the coating and drying temperature is 120 ℃ in the first region, 120 ℃ in the second region, 110 ℃ in the third region, and the coating amount is 0.7g/m2The coating thickness was 25 μm.
Example 2
(1) Preparation of a wood pulp fiber net layer: carrying out hydraulic power pulping treatment and mechanical pulping treatment on a softwood pulp board with the brightness of 87% in sequence to obtain wood pulp slurry with the concentration of 3.2%, sending the wood pulp slurry into a pulp distribution pool to be uniformly mixed, adding water to dilute the wood pulp slurry to reduce the concentration of the wood pulp slurry to 0.10%, controlling the pulp-net speed ratio to be 0.86, controlling the frequency to be 130 times/min and the amplitude to be 10mm, and forming the mixture by an inclined net former to obtain the softwood pulp board with the gram weight of 50g/m2The wood pulp web layer of (1), wherein the hydropulping process comprises: carrying out hydraulic opening treatment and crushing on the softwood pulp board to obtain wood pulp slurry, wherein the length of wood pulp fibers in the wood pulp slurry is 3mm, the width of the wood pulp fibers in the wood pulp slurry is 52.1 mu m, the opening concentration is controlled to be 3.2% in the hydraulic opening treatment process, and the opening time is 40 min; the mechanical pulping treatment process comprises the following steps: and carrying out mechanical pulping treatment on the wood pulp obtained by hydraulic pulping treatment, wherein the pulping concentration is controlled to be 3.2%, the pulping degree is 28 ℃ SR, and the wet weight is 13g in the mechanical pulping treatment process.
(2) Preparation of polylactic acid fiber web layer: uniformly mixing polylactic acid bicomponent fiber and polylactic acid fiber according to a mixing ratio of 80:20 to form mixed fiber, and opening and carding the mixed fiber web in sequence to obtain the mixed fiber web with the gram weight of 30g/m2The polylactic acid fiber mesh layer is characterized in that the length of the polylactic acid bicomponent fiber is 38mm, the fineness of the polylactic acid bicomponent fiber is 1.5D, the length of the polylactic acid fiber is 38mm, the fineness of the polylactic acid fiber is 1.5D, and the opening process adopts the following technological parameters: adopting two times of coarse opening and one time of fine opening, wherein the linear speeds of the opening rollers are 700m/min, 820 m/min and 980 m/min respectively, and the main steps areThe speed of the cylinder is 880 m/min, and the speed ratio of the cylinder to the working roll is 16.5: 1.
and (2) after the wood pulp fiber web layer is formed in the step (1), conveying the formed wood pulp fiber web layer at the speed of 110m/min and stacking the formed wood pulp fiber web layer on the polylactic acid fiber web layer.
(3) A spunlace reinforcement process: carrying out spunlace reinforcement on the wood pulp fiber net layer and the polylactic acid fiber net layer by adopting 4 groups of spunlace heads to obtain the wood pulp fiber/polylactic acid fiber composite fiber net, wherein the technological parameters adopted in the spunlace reinforcement process comprise: the water jet pressure is 30bar, 50bar, 60bar, and 70 bar.
(4) A drying and winding process: sending the wood pulp fiber/polylactic acid fiber composite fiber web into an oven for drying treatment and then winding to obtain the wood pulp fiber/polylactic acid fiber composite fiber web with the gram weight of 80g/m2The wood pulp fiber web/polylactic acid fiber composite non-woven fabric adopts the following technological parameters in the drying treatment process: four groups of drum dryers are adopted to sequentially carry out pre-drying and baking treatment, wherein the temperature of the first group of pre-drying drums is 95 ℃, the temperature of the other three groups of baking drums is 109 ℃, 118 ℃ and 120 ℃, and the drying speed is 75 m/min.
(5) And (3) calendaring and shaping: adopting a four-roller calender to calender the wood pulp fiber web/polylactic acid fiber composite non-woven fabric, and then obtaining the non-woven fabric base fabric with the thickness of 0.1mm after slitting treatment, wherein the calendering treatment process adopts the following technological parameters: the first set of pre-heat rolls was 85 deg.C, the second set of calender rolls was 115 deg.C, and the line pressure was 12 tons.
(6) Coating: unreeling the non-woven fabric base cloth, conveying the non-woven fabric base cloth to a roller type coating machine for surface coating treatment, drying and winding to obtain non-woven fabric water transfer printing paper, wherein the coating liquid adopted in the surface coating treatment process is prepared from the following components in percentage by weight: 8, the viscosity of the coating liquid is 0.96Pa.s, the PVA is PVA1799, and the mass concentration is 10%; the surface coating treatment process adopts the following process parameters: the pressure between the two rollers is 0.20MPa, the gap is 0.15mm, the angle of the scraper is 45 degrees, the coating and drying temperature is 120 ℃ in a first region, 115 ℃ in a second region, 110 ℃ in a third region, and the coating amount is 0.82g/m2The coating thickness was 30 μm.
Example 3
(1) Preparation of a wood pulp fiber net layer: carrying out hydraulic power pulping treatment and mechanical pulping treatment on a softwood pulp board with the brightness of 88% in sequence to obtain wood pulp slurry with the concentration of 3.4%, sending the wood pulp slurry into a pulp distribution pool to be uniformly mixed, adding water to dilute the wood pulp slurry to reduce the concentration of the wood pulp slurry to 0.12%, controlling the pulp-net speed ratio to be 0.85, controlling the frequency to be 110 times/min and the amplitude to be 8mm, and forming the mixture by an inclined net former to obtain the softwood pulp board with the gram weight of 60g/m2The wood pulp web layer of (1), wherein the hydropulping process comprises: carrying out hydraulic opening treatment and crushing on the softwood pulp board to obtain wood pulp slurry, wherein the length of wood pulp fibers in the wood pulp slurry is 2mm, the width of the wood pulp fibers in the wood pulp slurry is 36.5 mu m, the opening concentration is controlled to be 3.5% in the hydraulic opening treatment process, and the opening time is 50 min; the mechanical pulping treatment process comprises the following steps: and carrying out mechanical pulping treatment on the wood pulp obtained by the hydraulic pulping treatment, wherein the pulping concentration is controlled to be 3.4%, the pulping degree is 29 ℃ SR, and the wet weight is 14g in the mechanical pulping treatment process.
(2) Preparation of polylactic acid fiber web layer: uniformly mixing polylactic acid bicomponent fiber and polylactic acid fiber according to a mixing ratio of 85:15 to form mixed fiber, and opening and carding the mixed fiber web in sequence to obtain the mixed fiber web with the gram weight of 40g/m2The polylactic acid fiber mesh layer is characterized in that the length of the polylactic acid bicomponent fiber is 38mm, the fineness of the polylactic acid bicomponent fiber is 1.5D, the length of the polylactic acid fiber is 51mm, the fineness of the polylactic acid fiber is 3D, and the opening process adopts the following technological parameters: adopting two times of coarse opening and one time of fine opening, wherein the linear speeds of the opening rollers are respectively 750m/min, 900 m/min and 1000 m/min, the speed of the main cylinder is 950m/min, and the speed ratio of the cylinder to the working roller is 18.6: 1.
and (2) after the wood pulp fiber web layer is formed in the step (1), conveying the formed wood pulp fiber web layer at the speed of 100m/min and stacking the formed wood pulp fiber web layer on the polylactic acid fiber web layer.
(3) A spunlace reinforcement process: carrying out spunlace reinforcement on the wood pulp fiber net layer and the polylactic acid fiber net layer by adopting 4 groups of spunlace heads to obtain the wood pulp fiber/polylactic acid fiber composite fiber net, wherein the technological parameters adopted in the spunlace reinforcement process comprise: the water-jet pressure is 35bar, 55bar, 70bar and 80 bar.
(4) A drying and winding process: mixing the wood pulp fiber/polylactic acidSending the acid fiber composite fiber web into an oven for drying treatment and then winding to obtain the acid fiber composite fiber web with the gram weight of 100g/m2The wood pulp fiber web/polylactic acid fiber composite non-woven fabric adopts the following technological parameters in the drying treatment process: four groups of drum dryers are adopted to sequentially carry out pre-drying and baking treatment, wherein the temperature of the first group of pre-drying drums is 100 ℃, the temperature of the other three groups of baking drums is 108 ℃, 115 ℃ and 120 ℃, and the drying speed is 80 m/min.
(5) And (3) calendaring and shaping: adopting a four-roller calender to carry out calendering treatment on the wood pulp fiber web/polylactic acid fiber composite non-woven fabric, and then obtaining a non-woven fabric base fabric with the thickness of 0.124mm after slitting treatment, wherein the calendering treatment process adopts the following technological parameters: the temperature of the first group of preheating rolls is 90 ℃, the temperature of the second group of calender rolls is 120 ℃, and the linear pressure is 15 tons.
(6) Coating: unreeling the non-woven fabric base cloth, conveying the non-woven fabric base cloth to a roller type coating machine for surface coating treatment, drying and winding to obtain non-woven fabric water transfer printing paper, wherein the coating liquid adopted in the surface coating treatment process is 95: 5, the viscosity of the coating liquid is 1.05Pa.s, the PVA is PVA2488, and the mass concentration is 7%; the surface coating treatment process adopts the following process parameters: the pressure between the two rollers is 0.212MPa, the gap is 0.2mm, the angle of the scraper is 90 degrees, the coating and drying temperature is 125 ℃ in the first region, 115 ℃ in the second region, 100 ℃ in the third region, and the coating amount is 0.95g/m2The coating thickness was 35 μm.
The nonwoven water transfer paper prepared in the above examples 1 to 3 was tested for wet strength, dry strength, thickness, Cobb value, smoothness and the like, and compared with commercially available water transfer paper, and the results of the comparative tests are shown in table one. The standards used in the tests are as follows:
(1) thickness of
The thickness of the model YG (B) 141D digital fabric thickness gauge was used, and the test method was carried out according to GB/T3820-1997 standard.
(2) Cobb value: the test of the Cobb value uses a Cobb tester, implementing the standard GB/T1540-2002.
(3) Wet and dry strength: a DLS-03 type paper tensile strength tester is adopted, and the test method is executed according to the GB/T12914-91 standard.
(4) Smoothness: and testing by using an HP-PHD smoothness tester and executing the standard GB/T456.
Example 1 Example 2 Example 3 Commercial water transfer paper
Gram weight (g/m)2） 60 80 100 160 (without coating)
Elongation at Wet Break (Km) 1.146 1.504 1.793 0.582
Elongation at Dry crack (Km) 7.824 8.359 9.561 3.059
Cobb value (obverse/reverse) 75/180 60/188 58/196 97/183
Thickness (mm) 0.11 0.13 0.159 0.28
Smoothness(s) 80 75 70 75
Curling property in water Straight and straight Straight and straight Straight and straight Crimping
Watch 1
As can be seen from the data shown in the table I, the grammage of the nonwoven water transfer paper prepared in examples 1 to 3 is 60 to 100g/m2Far below 160 g/m of water transfer printing paper sold on the market2And the wet-crack elongation and the dry-crack elongation are more than one time of the commercially available water transfer paper, obviously, the non-woven water distribution transfer paper provided by the embodiment of the invention is more outstanding than the commercially available water transfer paper in the aspects of strength, dimensional stability, gram weight, thickness and other performances, and can be comparable to the smoothness, and the non-woven water distribution transfer paper adopts the non-woven fabric with a double-layer structure as a base material, and through the selection of special materials and the double-layer fiber web structure,the non-woven water distribution transfer paper provided by the invention has the advantages of light gram weight, no chemical addition, complete degradation, shortened processing flow and raw material saving, and has a good application prospect in the textile field as a green environment-friendly product.
While the invention has been described in detail in the foregoing by way of general description, and specific embodiments and experiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof.

Claims (7)

1. A preparation method of nonwoven water distribution transfer printing paper is characterized by comprising the following steps:
(1) carrying out hydraulic pulp opening treatment and mechanical pulping treatment on a softwood pulp plate with the brightness of 85-88% in sequence to obtain wood pulp slurry with the concentration of 3.0-3.4%, sending the wood pulp slurry into a pulp distribution pool, uniformly mixing, adding water for diluting to reduce the concentration of the wood pulp slurry to 0.08-0.12%, controlling the pulp-net speed ratio to be 0.85-0.88, the frequency to be 110-times/min and the amplitude to be 8-11mm, and forming by an inclined net former to obtain the softwood pulp with the gram weight of 40-60g/m2A wood pulp web layer of;
(2) uniformly mixing polylactic acid bicomponent fiber and polylactic acid fiber according to the mixing ratio of 75-85:15-25 to form mixed fiber, and mixing the mixed fiber with polylactic acid bicomponent fiber and polylactic acid fiber to form the composite fiberThe mixed fiber web is sequentially opened and carded to obtain the fiber web with the gram weight of 22-40g/m2The polylactic acid fiber web layer adopts the process parameters of the opening procedure which comprise: two times of coarse opening and one time of fine opening are adopted, the linear speed of the opening roller is respectively 750m/min for 600 plus materials, 900 m/min for 770 plus materials and 1000 m/min for 950 plus materials, the speed of the main cylinder is 950m/min for 810 plus materials, and the speed ratio of the cylinder to the working roller is 14.3-18.6: 1;
(3) carrying out spunlace reinforcement on the wood pulp fiber net layer and the polylactic acid fiber net layer by adopting 4 groups of spunlace heads to obtain the wood pulp fiber/polylactic acid fiber composite fiber net, wherein the technological parameters adopted in the spunlace reinforcement process comprise: the water jet pressure is 20-35bar, 40-55bar, 55-70bar, 68-80 bar;
(4) sending the wood pulp fiber/polylactic acid fiber composite fiber web into an oven for drying treatment and then winding to obtain the wood pulp fiber/polylactic acid fiber composite fiber web with the gram weight of 60-100g/m2The wood pulp fiber web/polylactic acid fiber composite non-woven fabric adopts the following technological parameters in the drying treatment process: adopting four groups of drum dryers to sequentially carry out pre-drying and baking treatment, wherein the temperature of the first group of pre-drying drums is 95-100 ℃, the temperature of the other three groups of baking drums is 105-120 ℃, and the drying speed is 70-80 m/min;
(5) adopting a four-roll calender to carry out calendering treatment on the wood pulp fiber web/polylactic acid fiber composite non-woven fabric, and then obtaining a non-woven fabric base fabric with the thickness of 0.095-0.124mm after slitting treatment, wherein the calendering treatment process adopts the following technological parameters: the temperature of the first group of preheating rollers is 80-90 ℃, the temperature of the second group of calendering rollers is 110-120 ℃, and the linear pressure is 10-15 tons;
(6) unreeling the non-woven fabric base cloth, conveying the non-woven fabric base cloth to a roller type coating machine for surface coating treatment, drying and winding to obtain non-woven fabric water transfer printing paper, wherein the coating liquid adopted in the surface coating treatment process is prepared from the following components in percentage by weight of 90-95: 5-10 parts of PVA and glycerol, and the viscosity of the coating liquid is 0.85-1.05 Pa.s.
2. The method according to claim 1, wherein the polylactic acid bicomponent fiber in step (2) has a length of 38mm and a fineness of 1.5D, and the polylactic acid fiber has a length of 38-51mm and a fineness of 1.5-3D.
3. The method according to claim 1, wherein the hydraulic pulping process in step (1) comprises:
carrying out hydraulic opening treatment on the softwood pulp board and crushing to obtain wood pulp slurry, wherein the length of wood pulp fibers in the wood pulp slurry is 2-5mm, the width of the wood pulp fibers is 36.5-60.8 mu m, the opening concentration is controlled to be 3.0-3.5% in the hydraulic opening treatment process, and the opening time is 30-50 min;
the mechanical pulping treatment process in the step (1) comprises the following steps:
and carrying out mechanical pulping treatment on the wood pulp obtained by hydraulic pulping treatment, wherein the pulping concentration is controlled to be 3.0-3.4%, the pulping degree is 27-29 DEG SR, and the wet weight is 13-14g in the mechanical pulping treatment process.
4. The method according to claim 1, wherein the process parameters adopted in the surface coating treatment process in the step (6) comprise: the pressure between the two rollers is 0.189-0.212MPa, the gap is 0.1-0.2mm, the angle of the scraper is 0-90 ℃, the coating and drying temperature is 125 ℃ in the first zone, 120 ℃ in the second zone, 110 ℃ in the third zone and 0.7-0.95g/m of coating amount2The thickness of the coating layer is 25-35 μm.
5. The method of claim 1, wherein the PVA of step (6) is at least one of PVA1788, PVA1799 and PVA2488 at a mass concentration of 7-15%.
6. The method as recited in claim 1 wherein the wood pulp web layer is formed in step (1) and then transported at a speed of 100-120m/min and stacked onto the polylactic acid web layer.
7. A nonwoven water transfer printing paper, characterized in that the nonwoven water transfer printing paper is prepared by the method for preparing nonwoven water transfer printing paper according to any of claims 1-6, the nonwoven water transfer printing paper comprises a PVA coating layer, a wood pulp fiber web layer and a polylactic acid fiber web layer from top to bottom, the PVA coating layer is prepared by mixing the following components in a ratio of 90-95: 5-10 of PVA and glycerol.
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CN113584714A (en) * 2021-06-22 2021-11-02 南通通州江华纺织有限公司 Wood pulp composite non-woven fabric, production process and production line thereof
CN115534436A (en) * 2022-11-02 2022-12-30 高梵(浙江)信息技术有限公司 High-performance fiber anti-tearing non-woven fabric and preparation method thereof
CN115534436B (en) * 2022-11-02 2024-05-17 高梵(浙江)信息技术有限公司 High-performance fiber anti-tearing non-woven fabric and preparation method thereof

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