CN109629110A - A kind of preparation method of wood pulp mixing spunlace non-woven material - Google Patents
A kind of preparation method of wood pulp mixing spunlace non-woven material Download PDFInfo
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- CN109629110A CN109629110A CN201811507050.3A CN201811507050A CN109629110A CN 109629110 A CN109629110 A CN 109629110A CN 201811507050 A CN201811507050 A CN 201811507050A CN 109629110 A CN109629110 A CN 109629110A
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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
- D04H1/44—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
- 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
- D04H1/4258—Regenerated 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
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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
- D04H1/4382—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
- D04H1/498—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 entanglement of layered webs
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2509/00—Medical; Hygiene
- D10B2509/02—Bandages, dressings or absorbent pads
- D10B2509/026—Absorbent pads; Tampons; Laundry; Towels
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The present invention relates to non-woven material fields, disclose a kind of preparation method of wood pulp mixing spunlace non-woven material, including mass percent be 24~72% wood pulp cellulose, 1~5% superbhort fiber and 75~23% textile staple be made；By the wood pulp cellulose, superbhort fiber by inclined wire wet-laying and the textile staple after dry carding networking, three kinds of fibers are made to be mutually mixed entanglement through overlapping, spun lacing again, so that wood pulp cellulose mixed distribution is among superbhort fiber and textile staple.Soft since wood pulp is uniformly distributed in material after wet tissue is made in non-woven material produced by the present invention, wet tissue is easy to extract, and has certain thickness, absorbency and liquid-keeping more preferable.
Description
Technical field
The present invention relates to non-woven material field more particularly to a kind of preparation sides of wood pulp mixing spunlace non-woven material
Method.
Background technique
Wet tissue is using non-woven cloth, dust-free paper or other raw materials as carrier, and purified water is industrial water, adds anti-corrosion in right amount
The auxiliary materials such as agent, opponent, skin and mucosa or body surface have a kind of amenities of cleaning or bactericidal effect.
With economic development and improvement of living standards, people increasingly pay attention to health and health problem.And wet tissue is made
It is also more and more popular with consumers because of its strong cleaning force and this convenient practical two major features for daily cleaning supplies.
It was predicted that middle class and young people, white collar clan group are constantly strong as China's income of residents improves year by year
Greatly, life style realizes great change, consumption structure from living type consumption to development-centric consumption, from traditional consumption to novel consumption
Upgrading, health idea, cleaning consciousness enhance therewith, and the following wet tissue utilization rate will quickly rise, and drive the wet tissue overall market size
Rapid growth.
Traditional spunlace non-woven material is mainly raw material through mechanical carding networking, height using textile staples such as viscose, terylene
Jet flow spray net is made at cloth.Spun lacing method is flexible reinforcing, does not damage fiber in technical process, has both maintained the softness of product
Property, and product is made to obtain higher breaking strength, therefore, spunlace non-woven material has obtained widely answering in wet tissue field
With.
Currently, domestic wet tissue spun laced fabric is mostly using viscose staple fibre, polyester staple fiber as raw material, and wood pulp is with timber
For pulp made of raw material, have the characteristics that fibre length is short, rate of liquid aspiration is fast, therefore, in recent years, many spun laced fabric enterprises will
Raw material of wood pulp is applied in the production of spunlace non-woven cloth.
Application No. is 201611272691.6 patents of invention to disclose a kind of method for processing nonwoven fabrics, including following step
It is rapid: 1) wet-laying raw material to be prepared into preforming net A；2) dry-laying raw material is subjected to mixing networking, pre- spun lacing, is formed pre-
Forming net B；3) after being overlapped preforming net A as lower layer as upper layer, preforming net B, progress spun lacing is compound, dries；
The raw material of the dry-laying is wood pulp cellulose and ES fiber, and the speed of mixing networking process is 100m/min, pre- spun lacing process
The spun lacing pressure of four water jets be respectively 50bar, 55bar, 60bar, 60bar；The invention good anti-bacterial effect, to human body without
Harm has the function of anti-corrosion, mould proof, has good absorption pernicious gas and fungistatic effect, suitable for making curable product
And wipe product.The program is disadvantageous in that product feel is not soft enough, thickness is lower, product two sides difference on effect is big.
Application No. is 201711225455.3 patents of invention to disclose a kind of terylene wood pulp wet tissue and preparation method thereof, should
Wet tissue includes the raw material of following mass percent: wood pulp 30-40%, terylene 60-70%.Wood pulp is adjusted after mashing, mill
Moisture content, then papermaking forms, and obtains wood pulp paper；Will be compound with wood pulp paper after dacron carding networking, successively taken out through spun lacing, plain net
It inhales, drying cylinder adjusts water content to get terylene wooden oar wet tissue.The invention adjusts wood pulp cloth terylene and wood by adjusting production technology
Slurry proportion finds the optimum formula that can replace terylene viscose glue flexibility.The program is disadvantageous in that product is wood pulp on one side
Layer, feel is harder, and thickness is lower.
Application No. is 200920283637.0 patents of invention to disclose a kind of composite spun-laced fabric with wood pulp fiber layer,
Including wood pulp fiber layer and textile staple layer, wood pulp fiber layer is incorporated into the side of textile staple layer, in which: the spinning
The material for knitting short fiber layers is the combination of chemical fibre or natural fiber or chemical fibre and natural fiber.The technical solution by
In the structure combined using wood pulp fiber layer with textile staple layer, to not only embody environmentally protective safety, but also improve
Intensity, is not in fall to consider phenomenon to be worth doing in use, is suitable as industry or civilian wiper, is additionally had good
Water imbibition.The program is disadvantageous in that wood pulp cellulose is located at the one side of product, and two sides difference is larger, feel is harder, thickness compared with
It is low.
In conclusion mainly using following two process route to process by the spunlace non-woven material of raw material of wood pulp:
1, using textile staple dry carding networking, the then, baking compound by Spunlace line by wood pulp paper and dry method fibre web again
It is dry to form；
2, wood pulps wet-laying is directlyed adopt, then again by wet process wood pulp fibre web and dry method textile staple net through Spunlace line
It is compound, dry.
Currently, although the spunlace non-woven material containing wood pulp cellulose has the characteristics that rate of liquid aspiration is fast in the market, product
Still have following deficiency:
1, from the structure of the existing spunlace non-woven material containing wood pulp cellulose, wood pulp cellulose is respectively at textile staple net
The two sides of material is wood pulp cellulose face on one side, be textile staple net on one side, and two sides difference is obvious.Due to wood pulp one side matter
Ground is close, feel is harder, this material very sensitive paper, therefore, also has in the market this material being known as " cleansing tissue "；
2, since the existing wood pulp of spunlace non-woven material containing wood pulp cellulose face quality is close, the thickness of material is dry compared to common
Method spun laced fabric wants low, and the material for being used for wet tissue then needs certain thickness, has both guaranteed material good hand feeling, has good
Absorbency and liquid-keeping, and guarantee that wet tissue finished product shapes packing good；
3, due to the one side of the existing spunlace non-woven material containing wood pulp cellulose be wood pulp cellulose, after wet tissue is made due to
The effect of hydrogen bond in wood pulp cellulose is mutually sticked together between every wet tissue overwood pulp noodle when hygrometric state, it is not easy to be extracted out, be influenced
The use of consumer.
Therefore, in view of problem above of the existing technology, according to the market demand in wet tissue field, it is necessary to develop one kind
Not only guaranteed that material had good absorbency, rate of liquid aspiration fast, but also material feel, soft fluffy can be improved, thickness is moderate, takes out
Take convenient wood pulp spunlace non-woven material.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of preparation sides of wood pulp mixing spunlace non-woven material
Method.It is soft since wood pulp is uniformly distributed in material after wet tissue is made in non-woven material produced by the present invention, wet tissue
It is easy to extract, and there is certain thickness, absorbency and liquid-keeping more preferable.
The specific technical proposal of the invention is: a kind of preparation method of wood pulp mixing spunlace non-woven material, including quality
Percentage be 24~72% wood pulp cellulose, 1~5% superbhort fiber and 75~23% textile staple be made；It will be described
Wood pulp cellulose, superbhort fiber by inclined wire wet-laying and the textile staple after dry carding networking, then through folded
Conjunction, spun lacing make three kinds of fibers be mutually mixed entanglement, so that wood pulp cellulose mixed distribution is among superbhort fiber and textile staple.
As described in the background art, the wood pulp of wood pulp wet tissue in the prior art is all the one side positioned at wet tissue, due to wood
Pulp fibres feel is harder, causes wet tissue flexibility not good enough, and is easy to produce the easy adhesion of hydrogen bond after wood pulp cellulose chance water and causes to take out
Take not aspect.And existing wood pulp wet tissue thickness low LCL.The present invention is equal by wood pulp cellulose by technologic innovation realization thus
It is even to be distributed in wet tissue, to smoothly solve above-mentioned technical problem.
Wherein, wood pulp cellulose is with superbhort fiber using the purpose of inclined wire wet-laying in technical solution of the present invention: fine
Tieing up wet-formed generally has fourdrinier wire, cylinder and an inclined wire three types.The technical program uses inclined wire wet-laying, is taken out by vacuum
Wood pulp cellulose and superbhort fiber are deposited on the net by the effect of suction, and fiber alignment is without apparent directionality, fiber in forming process
Spatially shape is evenly distributed on the thickness for not only improving increase material on the net in a jumble, and can reduce the vertically and horizontally strength of material
Than reducing the deformation of material in use.
Preferably, the wood pulp cellulose be softwood pulp fiber, the softwood pulp fiber (after pulp) it is initial
Beating degree is 8~17 ° of SR.
The present invention selects the reason of needlebush to be: wood pulp is using timber as pulp made of raw material, by mashing characteristic point
Class, wood pulp cellulose are divided into softwood pulp and hardwood pulp two major classes again.Since the fiber of softwood pulp is longer, generally 2~3.5
Millimeter.And the fiber of hardwood pulp is shorter, it is generally 0.8~1.1 millimeter, therefore, longer using length in the technical program
The entanglement effect of fiber can be improved in softwood pulp, increases the breaking strength of material, while that reduces material falls considering to be worth doing property, it is ensured that material
Item matter.
Beating degree is also referred to as beating degree, indicates the water filtering performance of paper pulp, to the breaking strength of material, fall considering to be worth doing property have it is important
It influences.
Preferably, the textile staple is one or two kinds of combinations of polyester staple fiber, regenerated cellulose staple fiber；
The fineness of textile staple is 0.9~3.0dtex, and length is 25~55mm；The superbhort fiber is the ultrashort fibre of regenerated cellulose
Dimension, fibre fineness are 0.9~2.4dtex, and fibre length is 5~10mm.
Preferably, the cloth cover of the wood pulp mixing spunlace non-woven material is plain weave, mesh or jacquard structure.
Preferably, the mass area ratio of the wood pulp mixing spunlace non-woven material is 40~120g/m2。
Preferably, specifically includes the following steps:
1) prepared by wet-laid webs:
1.1) wood pulps are sent into pulping pond, by mechanism, make the abundant size degradation of pulp, the slurry that concentration is 3~6% is made
Dregs of rice mixed liquor；
1.2) superbhort fiber is sent into dump chest, fiber dispersion is completed in dump chest, the fibre that concentration is 0.1~1% is made
Slurries are tieed up, then are mixed and made into the fiber mixture slurry that concentration is 1~3% with pulp mixed liquor；It removes in fiber mixture slurry
Impurity and coma guarantee that the fiber in slurries is in single fiber state；
1.3) titled net formation machine will be sent by fan pump after fiber mixture slurry stirring, dilution, is dehydrated on wet forming device
Wet-laid webs are formed to be placed on wet process support lace curtaining.
2) prepared by dry method fibre web:
2.1) one or more textile staples are sent into bale opener and carry out preliminary shredding, mixing, then by textile staple
Be sent into opener pass through tear make bulk be entangled with fiber reinforced cement composite into fritter or pencil, and remove the impurity in fiber；
2.2) bulk fibers will be combed into bundle fiber by shredding, mixed textile staple feeding carding machine, then
Bundle fiber is combed into single fiber, is made and is placed in dry method support lace curtaining with certain thickness fluffy textile staple net
On.
3) composite spunlaced reinforcing:
3.1) textile staple net is reduced into web caliper through over-voltage fibre roller to exclude the air in textile staple net, it will be fine
Network pressure is real；
3.2) the textile staple net after compacting is transferred on wet process support lace curtaining, is overlapped with wet-laid webs；It will overlapping
Resulting overlapping fibre web is prewetted by roller of prewetting, and wherein textile staple net is upper, and wet-laid webs are under；
3.3) the overlapping fibre web after prewetting, which take off by vacuum suction apparatus, to be done, to reduce the moisture content in fibre web, suction
Overlapping fibre web afterwards is tightly attached on wet process support lace curtaining；
3.4) wet process support lace curtaining drives overlapping fibre web to first pass around stripping off device, passes through the air outlet being laterally arranged on stripping off device
The air of blowout makes the overlapping fibre web being tightly attached on wet process support lace curtaining and wet process support lace curtaining generate gap, then again will overlapping fibre
Net will overlap fibre web by transferring roller and be transferred on spun-laced technology curtain from wet process support lace curtaining；
3.5) overlapping fibre web enters spun lacing process under the drive of spun-laced technology curtain, is pierced in advance to overlapping fibre web first, then adopt
With multiple tracks high-pressure water-jet, spun lacing is carried out to the front of overlapping fibre web, at this point, textile staple net, upper, wet-laid webs are under；
Then multiple tracks high-pressure water-jet is carried out to overlapping fibre web reverse side again, at this point, wet-laid webs, upper, textile staple net is under；
3.6) the hygrometric state material after spun lacing is passed through into dehydration device, to remove the portion of water of material internal.
4) it dries and coiled:
Material after suction is dried, is coiled, wood pulp mixing spunlace non-woven material is made after packaging.
Preferably, the water jet pressure prewetted on roller is 10~20bar in step 3.2).
Preferably, vacuum suction pressure is -10~-30kpa in step 3.3)；In step 3.4), the stripping off device
The wind pressure of air outlet is 10~50kPa.
Preferably, multiple tracks spun lacing is carried out to overlapping fibre web front using plain net spun lacing, using circle drum water in step 3.5)
Thorn carries out multiple tracks spun lacing to overlapping fibre web reverse side；Pre- thorn pressure is 20~40bar；Positive spun lacing pressure is 50~100bar；Instead
Face spun lacing pressure is 60~120bar.
Conventionally, as technologic limitation, and cannot achieve and wood pulp cellulose is uniformly distributed in wet tissue, and
This realizes above-mentioned target by a series of process innovation.
Specifically, the present invention using the above scheme the reason of be:
(1) the hygrometric state fibre web strength after overlapping, prewetting is very low, therefore, first passes through plain net spun lacing and not only improves overlapping fibre
Net is transferred on spun-laced technology curtain from wet process support lace curtaining, while being also beneficial to improve speed of production.To fibre web reverse side using circle drum
The physical index of material can be improved in spun lacing, while being also conducive to production mesh and jacquard-type product.
(2) when carrying out spun lacing to overlapping fibre web front, textile staple net is upper, and wet-laid webs are under；It adopts first
Fibre web is pierced in advance with lower spun lacing pressure, so that fibre web obtains preliminary strength；Then medium spun lacing pressure is used again
Multiple tracks spun lacing is carried out to fibre web front, so that material is obtained the intensity needed, but also wet process will not be kept fine because spun lacing pressure is too big
Wood pulp in dimension net is excessively lost, and is guaranteed the fluffy plentiful of material, is kept certain thickness.
When carrying out spun lacing to overlapping fibre web reverse side, wet-laid webs upper, textile staple net under, at this moment using compared with
Entanglement efficiency not only can be improved in high spun lacing pressure, obtains higher intensity, more can be by the wood in the wet-laid webs of upper layer
Pulp fibres are implanted in the textile staple net of lower layer under the impact of high pressure water flow, so that wood pulp cellulose is evenly distributed on weaving short
In web, the side that wood pulp cellulose is in spun lacing material is avoided the occurrence of, spun lacing material Boardy Feeling, paper sense are by force and between layer of cloth
Adhesion and extract inconvenient problem.
Preferably, the specification of the spun-laced technology curtain is 100~120 mesh in step 3.5).
Under normal circumstances, the scale specification of spun lacing trawlnet curtain is 90 mesh, in the technical scheme, is done, wet fibre web overlapping
Afterwards, dry method fibre web is in upper layer, and wet-laid webs are in lower layer.Wet-laid webs are directly contacted with spun-laced technology curtain, due to wet
Wood pulp and superbhort fiber length in method web is shorter, therefore, when carrying out positive spun lacing to fibre web, in rushing for high pressure water flow
Hit down, be easy to cause wood pulp or superbhort fiber impacted and, through spun-laced technology curtain be lost, therefore, improve spun-laced technology curtain
Density, be set to 100~120 mesh, the loss of wood pulp and superbhort fiber can be significantly reduced, guarantee production it is normal into
Row.
Preferably, using vacuum suction mode, dewatered material moisture content is 60-70% in step 3.6)；Step
4) in, the drying mode that is penetrated using hot wind.
With using compared with drying dewatering type, deformation can be squeezed to avoid material using the dehydration of vacuum suction, most
The thickness of material is improved to limits, guarantees that material has plentiful feel.And penetrated using hot wind drying mode the reason of
It is, spunlace non-woven material mainly uses drying cylinder formula drying and hot-air through type two ways.With drying cylinder formula drying mode phase
Than through-air drying is high-efficient, and product is soft and full, can keep the surface structure of product to the maximum extent, improves material
The thickness of material.
Compared with prior art, the beneficial effects of the present invention are:
(1) congruent manner of adjustment wet-laid webs and textile staple net is taken in the present invention and cooperates corresponding technology
Parameter optimization adjustment, is uniformly distributed in wood pulp cellulose in textile staple net, solves existing for existing wood pulp spun lacing material
The strong problem of Boardy Feeling, paper sense；
(2) present invention is wet-formed using inclined wire in wet-laid webs preparation, and making fiber, spatially shape is evenly distributed in a jumble
On the net；Road reverse side spun lacing pressure is higher than the equipping rules of preceding road front spun lacing pressure after taking in spun lacing processing, optimizes water
Pressure parameter is pierced, and the production technology combined is penetrated using hollow suction, hot wind, so that material is obtained plentiful feel, mentions
The high thickness of material, solves the problems, such as that existing wood pulp spun lacing density of material is high, thickness is low；
(3) wood pulp of product of the present invention is uniformly distributed in textile staple net, without being distributed across material one side, therefore,
Be not in every wet tissue stick to each other due to surface layer is wood pulp in wet tissue processing and use process, solve existing wood pulp spun lacing
Material wet tissue be easy to happen hydrogen bond adhesion and caused by be not easy the problem of extracting；
(4) product of the present invention during the preparation process, presses the designs such as fine roller, roller of prewetting, stripping off device and transferring roller, solution by taking
The technical problems such as fibre web in the prior art of having determined overlaps, hygrometric state fibre web shifts, ensure that the normal production of product.
Detailed description of the invention
Fig. 1 is wood pulp mixing spunlace non-woven material schematic diagram of product structure；
Fig. 2 is wood pulp mixing spunlace non-woven material preparation process schematic diagram.
Appended drawing reference are as follows: wood pulp cellulose 1, textile staple 2, superbhort fiber 3, textile staple net 4, wet-laid webs 5,
It overlaps fibre web 6, press fine roller 7, roller 8 of prewetting, A suction unit 9, stripping off device 10, transferring roller 11, plain net water jet 12, circle drum water
Tartar 13, circle drum 14, spun-laced technology curtain 15, dry method trawlnet curtain 16, wet process support lace curtaining 17, B suction unit 18.
Specific embodiment
The present invention will be further described with reference to the examples below.
Total embodiment
A kind of wood pulp mixing spunlace non-woven material, mass area ratio are 40~120g/m2, as shown in Figure 1, by quality percentage
Textile staple 2 than the superbhort fiber 3 and 75~23% of the wood pulp cellulose 1,1~5% for 24~72% is made；By the wood
Pulp fibres, superbhort fiber by inclined wire wet-laying and the textile staple after dry carding networking, then through overlapping,
Spun lacing makes three kinds of fibers be mutually mixed entanglement, so that wood pulp cellulose mixed distribution is among superbhort fiber and textile staple.
Wherein, the wood pulp cellulose is softwood pulp fiber, the initial beating of the softwood pulp fiber (after pulp)
Degree is 8~17 ° of SR.
The textile staple is one or two kinds of combinations of polyester staple fiber, regenerated cellulose staple fiber；It weaves short fibre
The fineness of dimension is 0.9~3.0dtex, and length is 25~55mm.
The superbhort fiber be regenerated cellulose superbhort fiber, fibre fineness be 0.9~2.4dtex, fibre length be 5~
10mm。
Optionally, the cloth cover of the wood pulp mixing spunlace non-woven material is plain weave, mesh or jacquard structure.
Specific preparation step is as follows:
1) prepared by wet-laid webs:
1.1) wood pulps are sent into pulping pond, by mechanism, make the abundant size degradation of pulp, the slurry that concentration is 3~6% is made
Dregs of rice mixed liquor；
1.2) superbhort fiber is sent into dump chest, fiber dispersion is completed in dump chest, the fibre that concentration is 0.1~1% is made
Slurries are tieed up, then are mixed and made into the fiber mixture slurry that concentration is 1~3% with pulp mixed liquor；It removes in fiber mixture slurry
Impurity and coma guarantee that the fiber in slurries is in single fiber state；
1.3) titled net formation machine will be sent by fan pump after fiber mixture slurry stirring, dilution, is dehydrated on wet forming device
Wet-laid webs are formed to be placed on wet process support lace curtaining.
2) prepared by dry method fibre web:
2.1) one or more textile staples are sent into bale opener and carry out preliminary shredding, mixing, then by textile staple
Be sent into opener pass through tear make bulk be entangled with fiber reinforced cement composite into fritter or pencil, and remove the impurity in fiber；
2.2) bulk fibers will be combed into bundle fiber by shredding, mixed textile staple feeding carding machine, then
Bundle fiber is combed into single fiber, is made and is placed in dry method support lace curtaining with certain thickness fluffy textile staple net
On.
3) composite spunlaced reinforcing:
3.1) textile staple net is reduced into web caliper through over-voltage fibre roller to exclude the air in textile staple net, it will be fine
Network pressure is real；
3.2) the textile staple net after compacting is transferred on wet process support lace curtaining, is overlapped with wet-laid webs；It will overlapping
Resulting overlapping fibre web is prewetted by roller of prewetting, and wherein textile staple net is upper, and wet-laid webs are under；The water prewetted on roller
Tartar's pressure is 10~20bar.
3.3) the overlapping fibre web after prewetting, which take off by vacuum suction apparatus, to be done, to reduce the moisture content in fibre web,
Overlapping fibre web after suction is tightly attached on wet process support lace curtaining；Vacuum suction pressure is -10~-30kpa.
3.4) wet process support lace curtaining drives overlapping fibre web to first pass around stripping off device, is gone out by what is be laterally arranged on stripping off device
The air of air port blowout makes the overlapping fibre web being tightly attached on wet process support lace curtaining and wet process support lace curtaining generate gap, then will fold again
Conjunction fibre web will overlap fibre web by transferring roller and be transferred on spun-laced technology curtain from wet process support lace curtaining；The wind pressure of stripping off device air outlet
For 10~50kPa.
3.5) overlapping fibre web enters spun lacing process under the drive of the spun-laced technology curtain of 100~120 mesh, fine to overlapping first
Net is pierced in advance, then uses multiple tracks high-pressure water-jet, to the front progress spun lacing of overlapping fibre web, at this point, textile staple net is upper,
Wet-laid webs are under；Then multiple tracks high-pressure water-jet is carried out to overlapping fibre web reverse side again, at this point, wet-laid webs are in upper, weaving
Web of staple fibers is under；Wherein, multiple tracks spun lacing is carried out to overlapping fibre web front using plain net spun lacing, it is fine to overlapping using circle drum spun lacing
Net reverse side carries out multiple tracks spun lacing；Pre- thorn pressure is 20~40bar；Positive spun lacing pressure is 50~100bar；Reverse side spun lacing pressure
For 60~120bar.
3.6) by the hygrometric state material after spun lacing by vacuum suction dehydration device, to remove a part of water of material internal
Point, dewatered material moisture content is 60-70%.
4) drying and coiled: by the material drying (hot wind penetrates), coiled after suction, then cut, pack after wood is made
Slurry mixing spunlace non-woven material.
As shown in Fig. 2, production equipment used in the process of above-mentioned preparation method, successively includes: circulation by material conveying direction
The wet process support lace curtaining 17 of conveying, dry method trawlnet curtain 16, roller 8 of prewetting, A suction unit 9 (vacuum), stripping off device 10 (have blowing
Mouthful), transferring roller 11, the spun-laced technology curtain 15 (100~120 mesh) of circulation conveying, circle drum 14 and B suction unit 18 (vacuum).
The dry method trawlnet curtain is obliquely installed above wet process support lace curtaining, and dry method support lace curtaining, which is equipped with, presses fine roller 7；The water
Multiple plain net water jets 12 are equipped with above thorn support lace curtaining；The circle drum circumferential surface is equipped with several circle drum water jets 13.
Embodiment 1
A kind of wood pulp mixing spunlace non-woven material, ingredient are as follows: softwood pulp fiber 48%, polyester staple fiber 50%, regeneration
Cellulose superbhort fiber 2%, as shown in Figure 1, wood pulp cellulose 1 (softwood pulp fiber), (regenerated cellulose is ultrashort for superbhort fiber 3
Fiber) by inclined wire wet-laying, textile staple 3 (polyester staple fiber) after dry carding networking, then through overlapping, spun lacing
Three kinds of fibers are mutually mixed to tangle；Softwood pulp fiber mixed distribution is in regenerated cellulose superbhort fiber and polyester staple fibers
Among dimension.
The initial beating degree of needle-leaved wood fibre pulp is 12 ° of SR；The fineness of polyester staple fiber be 1.56dtex, length:
38cm；The fineness of regenerated cellulose superbhort fiber is 1.5dtex, length 10mm；Above-mentioned wood pulp mixing spunlace non-woven material
For plain weave structure, mass area ratio 50g/m2。
A kind of wood pulp mixing spunlace non-woven material preparation method, comprising the following steps:
1, prepared by wet-laid webs
1.1) needlebush pulp is sent into proportion in pulping pond, by mechanism, makes the abundant size degradation of wood pulps, concentration is made
For 4% pulp mixed liquor；
1.2) regenerated cellulose superbhort fiber is sent into proportion in dump chest, fiber dispersion is completed in dump chest, is made dense
The fiber slurry that degree is 0.5%, then it is mixed and made into the fiber mixture slurry that concentration is 2% in proportion with pulp mixed liquor；Removal
Impurity and coma in fiber mixture slurry guarantee that the fiber in slurries is in single fiber state；
1.3) titled net formation machine is sent by fan pump after fiber mixture slurry is agitated, dilution, is taken off on wet forming device
Water forms wet-laid webs and is placed on wet process support lace curtaining.
2, prepared by dry method fibre web
2.1) polyester staple fiber is sent into bale opener and carries out preliminary shredding, mixing, then lead to composite fibre feeding opener
Cross tear make bulk be entangled with fiber reinforced cement composite into fritter or pencil, and remove the impurity in fiber；
2.2) bulk fibers will be combed into fasciculation by shredding, mixed fiber feeding carding machine, then by bundle fiber
It is combed into single fiber, is made and is placed on dry method support lace curtaining with certain thickness fluffy textile staple net.
3, composite spunlaced reinforcing
3.1) it is thick to be reduced into fibre web to exclude the air in textile staple net through over-voltage fibre roller for fluffy polyester staple fiber net
Degree, fibre web is compacted；
3.2) the polyester staple fiber net after compacting is transferred on wet process support lace curtaining, is overlapped with wet-laid webs；It will overlapping
Rear web is prewetted by roller of prewetting, and wherein polyester staple fiber net is upper, and wet-laid webs are under；Wherein, it prewets on roller
Water jet pressure is 15bar；
3.3) the overlapping fibre web after prewetting, which take off by vacuum suction apparatus, to be done, to reduce the moisture content in fibre web, suction
Overlapping fibre web afterwards is tightly attached to above wet process support lace curtaining；Wherein, the swabbing pressure that fibre web is overlapped after prewetting is -20kPa；
3.4) wet process support lace curtaining drives overlapping fibre web to first pass around stripping off device, passes through the air outlet being laterally arranged on stripping off device
The air of middle blowout makes the overlapping fibre web being tightly attached to above wet process support lace curtaining and wet process support lace curtaining generate gap, then again will be fine
Fibre web is transferred on spun-laced technology curtain by net by transferring roller from wet process support lace curtaining；
Wherein, the stripping off device air outlet wind pressure is 40kPa；
3.5) fibre web enters spun lacing process under the drive of spun-laced technology curtain, is pierced in advance to fibre web first, then high using multiple tracks
Spun lacing is pressed, spun lacing is carried out to the front of fibre web, at this point, textile staple net, upper, wet-laid webs are under；Then again to fibre web
Reverse side carries out multiple tracks high-pressure water-jet, at this point, wet-laid webs, upper, textile staple net is under；
In the above process, multiple tracks spun lacing is carried out to fibre web front using plain net water jet first, then again using the water on circle drum
Tartar carries out multiple tracks spun lacing to fibre web reverse side；Wherein the spun lacing pressure of fibre web reverse side is greater than to the positive spun lacing pressure of fibre web；
The spun lacing pressure of the pre- thorn water jet is 30bar；The spun lacing pressure of the plain net water jet is 75bar；The circle drum spun lacing
The spun lacing pressure of head is 95bar；The specification of the spun-laced technology curtain is 100 mesh；
3.6) the hygrometric state material after spun lacing is made by vacuum suction dehydration device with removing the portion of water of material internal
The moisture content of material reaches 65%, reduces drying energy consumption.
4, it dries and coiled
Material after suction is penetrated into drying system drying, coiled by hot wind, using 50g/m is made after cutting, packaging2Wood
Slurry mixing spunlace non-woven material.
1 product of embodiment and conventional wood pulp spun lacing material dry state thickness and pliability test report are as follows.
Remarks:
(1) material softness degree is tested according to GB/T8942-2016 " measurement of paper pliability " standard；Laboratory apparatus: feel
Formula pliability instrument, specimen size: 100mm*100mm；
(2) pliability test philosophy: under prescribed conditions, when sample is pressed into slit certain depth (about 8mm) by plate gauge head, instrument
Device records the sum of the maximum vector of frictional force at the counter-bending power and sample and slit of sample itself, the referred to as softness of sample
Degree, instrument indicating value is smaller to illustrate that sample is more soft.
The above test report conclusion is as follows:
(1) in product specification (50g/m2) and test method is under the same conditions, and the product of embodiment 1, which is compared, uses the prior art
The normal wood pulp-water of production pierces material, and dry state thickness increases 0.285mm, and thickness amplification reaches 87.4%, illustrates using this Shen
Please technology product thickness increase clearly；
(2) in the identical (50g/m of product specification2), test method under the same conditions, the product of embodiment 1 is compared using existing
The normal wood pulp-water of technology production pierces material, and feel is more soft and difference is larger.
Wherein, laterally (CD) pliability improves 28.5% in material front, and longitudinal (MD) pliability in front improves 45.3%.Material
Expect that laterally (CD) pliability improves 37.5% to reverse side, longitudinal (MD) pliability in front improves 52.5%.Illustrate using the application skill
The product of art improves significant compared to normal wood pulp-water thorn material softness degree performance.
Embodiment 2
The present embodiment the difference from embodiment 1 is that: the wood pulp mixing spunlace non-woven material ingredient are as follows: softwood pulp fiber
49%, polyester staple fiber 49%, regenerated cellulose superbhort fiber 2%；The material mass area ratio is 65g/m2。
2 product of embodiment and conventional wood pulp spun lacing material dry state thickness and pliability test report are as follows.
The above test report conclusion is as follows:
(1) in product specification (65g/m2) and test method is under the same conditions, and the product of embodiment 2, which is compared, uses the prior art
The normal wood pulp-water of production pierces material, and dry state thickness increases 0.284mm, and thickness amplification reaches 72.6%, illustrates using this Shen
Please technology product thickness increase clearly；
(2) in the identical (65g/m of product specification2), test method under the same conditions, the product of embodiment 2 is compared using existing
The normal wood pulp-water of technology production pierces material, and feel is more soft and difference is larger.
Wherein, laterally (CD) pliability improves 56% in material front, and longitudinal (MD) pliability in front improves 16.8%.Material
Laterally (CD) pliability improves 54.3% to reverse side, and longitudinal (MD) pliability in front improves 30.2%.Illustrate using present techniques
Product improved compared to normal wood pulp-water thorn material softness degree performance it is significant.
Remarks:
Thickness contrast test method:
(1) sample is cut into 20*20cm size dimension 40, the sample cut out is passed through into doubling twice, and by stacked in multi-layers；
(2) above the sample of heap poststack, the poly (methyl methacrylate) plate of one piece of 10*10cm is placed, then center places 1 above
Block 2kg counterweight.After 5min, specimen height is recorded.Keep pressure holding state for 24 hours after, record specimen height again, respectively obtain material
Dry state thickness data；
(3) Essence is configured using deionized water and baby wipes compositional liquor；
(4) above-mentioned two laminated specimen is weighed, 3.0 times of addition Essences in pallet；
(5) above the sample by the stacking of liquid feeding, poly (methyl methacrylate) plate and 2kg counterweight are placed according to step (2).After 5min,
Record specimen height；Keep pressure holding state for 24 hours after, record specimen height again, obtain the thickness data of wet tissue.
It can be concluded that by above " report of dry and wet state products thickness contrast test "
1, in the identical (65g/m of material specification2), in the identical situation of test condition, 2 material of the embodiment of the present invention and common wood pulp
Spun lacing material is compared, and is made after 40 wet tissues after 5min and 24H, actual (real) thickness is higher by 2.45cm and 2.35cm respectively.
2, compared with normal wood pulp-water pierces material, 40 materials add 2 material of the embodiment of the present invention by 5min and 24H
After pressure, dry state thickness is higher by 2.7cm and 2.6cm respectively.Illustrate that 2 material of the present embodiment pierces density of material compared to normal wood pulp-water
It is low, good hand feeling, fluffy.
3, wooden between every wet tissue after wet tissue is made since normal wood pulp-water thorn material thickness is low, compact structure
Pulp fibres contact area is big, is bonded due to the effect of hydrogen bond, between two panels wet tissue close, and when use is not easy to extract；And the present embodiment 2
Material since structure is fluffy, thickness is high, wood pulp cellulose contact area is small between every wet tissue, will not generate adhesion situation, more
Add easy extraction.
Raw materials used in the present invention, equipment is unless otherwise noted the common raw material, equipment of this field；In the present invention
Method therefor is unless otherwise noted the conventional method of this field.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification, change and equivalent transformation to the above embodiments, still fall within the technology of the present invention side
The protection scope of case.
Claims (10)
1. a kind of preparation method of wood pulp mixing spunlace non-woven material, it is characterised in that: including mass percent be 24~72%
Wood pulp cellulose, 1~5% superbhort fiber and 75~23% textile staple be made；The wood pulp cellulose, superbhort fiber are passed through
Inclined wire wet-laying and the textile staple are crossed after dry carding networking, then makes three kinds of fiber phases through overlapping, spun lacing
Mutually mixing is tangled, so that wood pulp cellulose mixed distribution is among superbhort fiber and textile staple.
2. a kind of preparation method of wood pulp mixing spunlace non-woven material as described in claim 1, which is characterized in that the wood
Pulp fibres are softwood pulp fiber, and the initial beating degree of the softwood pulp fiber is 8~17 ° of SR.
3. a kind of preparation method of wood pulp mixing spunlace non-woven material as described in claim 1, which is characterized in that the spinning
Knit one or two kinds of combinations that staple fiber is polyester staple fiber, regenerated cellulose staple fiber；The fineness of textile staple be 0.9~
3.0dtex, length are 25~55mm；The superbhort fiber be regenerated cellulose superbhort fiber, fibre fineness be 0.9~
2.4dtex, fibre length are 5~10mm.
4. a kind of preparation method of wood pulp mixing spunlace non-woven material as described in claim 1, which is characterized in that the wood
The mass area ratio of slurry mixing spunlace non-woven material is 40~120 g/ ㎡.
5. a kind of preparation method of wood pulp mixing spunlace non-woven material as described in claim 1, which is characterized in that specific packet
Include following steps:
1) prepared by wet-laid webs:
1.1) wood pulps are sent into pulping pond, make the abundant size degradation of pulp, the pulp mixed liquor that concentration is 3~6% is made；
1.2) superbhort fiber is sent into dump chest, fiber dispersion is completed in dump chest, the fiber that concentration is 0.1~1% is made
Slurries, then the fiber mixture slurry that concentration is 1~3% is mixed and made into pulp mixed liquor；
1.3) by fiber mixture slurry be sent into titled net formation machine, on wet forming device dehydration formed wet-laid webs be placed in it is wet
On method support lace curtaining；
2) prepared by dry method fibre web:
2.1) one or more textile staples are sent into bale opener and carry out preliminary shredding, mixing, be then re-fed into opener
Make bulk is entangled with fiber reinforced cement composite into fritter or pencil；
2.2) by shredding, mixed textile staple feeding carding machine, bulk fibers are combed into bundle fiber, then by beam
Shape fiber is combed into single fiber, and fluffy textile staple net is made and is placed on dry method support lace curtaining；
3) composite spunlaced reinforcing:
3.1) textile staple net is excluded into the air in textile staple net through over-voltage fibre roller, reduces web caliper；
3.2) textile staple net is transferred on wet process support lace curtaining, is overlapped with wet-laid webs；It will overlap resulting folded
It closes fibre web to prewet by roller of prewetting, wherein textile staple net is upper, and wet-laid webs are under；
3.3) the overlapping fibre web after prewetting carries out de- dry moisture content in reduction fibre web by vacuum suction apparatus, after suction
Overlapping fibre web be tightly attached on wet process support lace curtaining；
3.4) wet process support lace curtaining drives overlapping fibre web to first pass around stripping off device, passes through the air outlet being laterally arranged on stripping off device
The air of blowout makes the overlapping fibre web being tightly attached on wet process support lace curtaining and wet process support lace curtaining generate gap, then again will overlapping fibre
Net will overlap fibre web by transferring roller and be transferred on spun-laced technology curtain from wet process support lace curtaining；
3.5) overlapping fibre web enters spun lacing process under the drive of spun-laced technology curtain, is pierced in advance to overlapping fibre web first, then adopt
With multiple tracks high-pressure water-jet, spun lacing is carried out to the front of overlapping fibre web, at this point, textile staple net, upper, wet-laid webs are under；
Then multiple tracks high-pressure water-jet is carried out to overlapping fibre web reverse side again, at this point, wet-laid webs, upper, textile staple net is under；
3.6) the hygrometric state material after spun lacing is passed through into dehydration device, to remove the portion of water of material internal；
4) it dries and coiled:
Material after suction is dried, is coiled, wood pulp mixing spunlace non-woven material is made after packaging.
6. a kind of preparation method of wood pulp mixing spunlace non-woven material as claimed in claim 5, which is characterized in that step
3.2) in, the water jet pressure prewetted on roller is 10~20 bar.
7. a kind of preparation method of wood pulp mixing spunlace non-woven material as claimed in claim 5, which is characterized in that step
3.3) in, vacuum suction pressure is -10~-30 kpa；In step 3.4), the wind pressure of the stripping off device air outlet is 10~50
kPa。
8. a kind of preparation method of wood pulp mixing spunlace non-woven material as claimed in claim 5, which is characterized in that step
3.5) in, multiple tracks spun lacing is carried out to overlapping fibre web front using plain net spun lacing, overlapping fibre web reverse side is carried out using circle drum spun lacing
Multiple tracks spun lacing；Pre- thorn pressure is 20~40bar；Positive spun lacing pressure is 50~100bar；Reverse side spun lacing pressure be 60~
120bar。
9. a kind of preparation method of wood pulp mixing spunlace non-woven material as claimed in claim 5, which is characterized in that step
3.5) in, the specification of the spun-laced technology curtain is 100~120 mesh.
10. a kind of preparation method of wood pulp mixing spunlace non-woven material as claimed in claim 5, which is characterized in that step
3.6) in, using vacuum suction mode, dewatered material moisture content is 60-70%；In step 4), the baking that is penetrated using hot wind
Dry mode.
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Application publication date: 20190416 |