CN114672926A - Efficient production method of all-cotton medical and sanitary non-woven material - Google Patents
Efficient production method of all-cotton medical and sanitary non-woven material Download PDFInfo
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- CN114672926A CN114672926A CN202210470566.5A CN202210470566A CN114672926A CN 114672926 A CN114672926 A CN 114672926A CN 202210470566 A CN202210470566 A CN 202210470566A CN 114672926 A CN114672926 A CN 114672926A
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- 229920000742 Cotton Polymers 0.000 title claims abstract description 182
- 239000000463 material Substances 0.000 title claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 238000009960 carding Methods 0.000 claims abstract description 114
- 239000000835 fiber Substances 0.000 claims abstract description 98
- 238000000034 method Methods 0.000 claims abstract description 51
- 238000004061 bleaching Methods 0.000 claims abstract description 47
- 238000001035 drying Methods 0.000 claims abstract description 44
- 239000012535 impurity Substances 0.000 claims abstract description 27
- 238000004140 cleaning Methods 0.000 claims abstract description 21
- 238000005238 degreasing Methods 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 7
- 230000007547 defect Effects 0.000 abstract description 13
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- 231100000252 nontoxic Toxicity 0.000 description 1
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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
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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
- D04H1/425—Cellulose series
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- 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
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- 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
- D10B2509/022—Wound dressings
-
- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention belongs to the technical field of non-woven fabric production, and provides an efficient production method of an all-cotton medical and sanitary non-woven material. The cotton fiber raw material is subjected to opening and cleaning to remove partial impurities, then is carded into a single fiber state, removes fine impurities, most cotton knots and partial short fibers, and is output in a raw strip form; and then, combining and stretching the raw slivers obtained after pre-carding through a sliver-to-roll procedure to form a fiber net with a certain gram weight, winding the fiber net into a roll, sequentially degreasing, bleaching, rewinding and drying to meet the requirement of secondary carding, and finally obtaining the all-cotton medical and sanitary non-woven material through secondary carding and spunlace reinforcement. The invention shortens the production line by using the strip and coil procedure, avoids secondary opening of the fiber after bleaching, ensures higher strength, surface density and thickness of the final non-woven material, and avoids defects of non-woven products caused by excessive opening and carding.
Description
Technical Field
The invention relates to the technical field of non-woven fabric production, in particular to an efficient production method of a non-woven material for all-cotton medical sanitation.
Background
The spunlace nonwoven material can be used for processing medical products such as operating gowns, operating towels, wound dressings and the like, and can also be used for producing sanitary products such as sanitary towels, baby diapers and wiping cloths. Medical and sanitary articles such as wound dressings, paper diapers and the like are required to have good absorbability, no toxicity, affinity and the like. The raw cotton fiber for the all-cotton non-woven material has the functions, the production process of the spunlace process is pollution-free, the surface of the non-woven material is free from hair falling and dust, and the all-cotton non-woven material is very suitable for manufacturing the medical and sanitary products.
The medical and sanitary non-woven material product has certain requirements on water absorption, and the raw cotton fiber needs to be degreased. And the cotton fiber has the concomitant substances such as fat, wax, pectin substances, protein, carbohydrate substances and the like attached to the surface of the fiber, and the degreasing treatment is also needed for removing the concomitant substances. At present, the existing production processes of all-cotton medical and sanitary non-woven materials mainly comprise two kinds, the first kind is to remove and float and then hydro-entangle to form cloth, and the specific production process is as follows: [ PREPARATION OF MATERIAL → OPEN CLEANING → COTTON → → WALL → BLEACHING → WASHING → OPEN → DRYING → baling- → [ OPEN CLEANING → COTTON BANKING → CROSS LAYING → SPRAYING → DRYING → WALL OF FINISHED PRODUCT ]; the method comprises three steps: 1. opening and packing the raw cotton fiber, finely and softly opening and removing partial impurities, carding the fiber bundle into a single fiber state by a cover plate type carding machine, and removing most impurities, neps and short fibers; 2. recovering the fiber carded by the cover plate type carding machine, performing cake making, degreasing, bleaching and cleaning, and packaging the dewatered and dried absorbent cotton again for later use; 3. and (3) opening and opening the dried and packaged absorbent cotton, then feeding the absorbent cotton to a carding machine for carding into a net, carrying out spunlace reinforcement to obtain cloth, and drying and reeling to obtain a finished product. The fiber web produced by the method of removing the bleaching before the water jet has high strength, and the non-woven material obtained by the water jet reinforcement has high breaking strength and elongation at break. But the production line is long, the intermediate processes are excessive, and the cost is high. And the cotton wool fibers are subjected to two times of opening and carding, which easily results in excessive carding of the fibers, thereby forming more defects on the final nonwoven material. The second method is that firstly water-jetting is carried out to form cloth and then the cloth is removed and bleached, and the specific production process is as follows: [ stock preparation → Kaiqing → carding → recovery → [ Kaiqing → carding (with a cotton box) → cross lapping → water jet → dehydration → wet winding → [ degreasing → bleaching → washing → rewinding → drying → finished product winding ]; the method is also divided into three steps: 1. opening and packing the raw cotton fiber, finely and softly opening and removing partial impurities, carding the fiber bundle into a single fiber state by a cover plate type carding machine, removing most impurities, neps and short fibers, and packing or collecting the fiber bundle into a large-bin cotton mixer or a multi-bin cotton mixer for later use; 2. uniformly and stably feeding the pre-carded cotton fibers to a cotton feeding box of a carding machine through a clearing device again, feeding banquet cotton to a carding machine for carding, and removing part of water after spunlace reinforcement to prepare a wet lap; 3. the wet cloth roll is degreased, bleached and cleaned, and then is rewound and dried, and then is reeled to prepare a finished product. The method of water jet and then decolouring produces a non-woven material with lower breaking strength and elongation than the first method, and the surface density and thickness are reduced. However, the production method has less damage to the fiber, and the softness and air permeability of the final product are better than those of the first production method. However, the second method also has problems of long production line, excessive intermediate steps, and high cost. Meanwhile, the raw cotton fibers are also subjected to twice opening and carding, which easily causes excessive carding of the fibers, so that more defects are formed on the final non-woven material. Therefore, a production method which has a short production line and can ensure the quality of the all-cotton medical and sanitary non-woven material is needed.
Disclosure of Invention
The invention aims to provide an efficient production method of all-cotton medical and sanitary non-woven materials, which shortens the production line and ensures the strength and the cloth cover quality of the final non-woven materials.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides an efficient production method of an all-cotton medical and sanitary non-woven material, which comprises the following steps:
A. opening and cleaning: sequentially grabbing, opening, mixing and removing impurities from a cotton fiber raw material to obtain cotton fibers;
B. pre-carding: b, carding the cotton fibers obtained in the step A to obtain raw slivers;
C. strip rolling: combining the raw strips obtained in the step B into a coil to obtain a cotton roll;
D. bleaching: d, degreasing and bleaching the cotton rolls obtained in the step C to obtain bleached cotton rolls;
E. rewinding and drying: d, unfolding and drying the bleaching-free cotton roll obtained in the step D to obtain a dry cotton layer; the sequence of the unfolding and the drying can be changed;
F. secondary carding: e, carding the dried cotton layer obtained in the step E for the second time to obtain a fiber web;
G. and (3) water jetting: and F, carrying out spunlace on the fiber web obtained in the step F to obtain the all-cotton medical and sanitary non-woven material.
Preferably, the cotton fiber raw material in the step A is all-cotton fiber.
Preferably, opening and impurity removal are not carried out before the secondary carding in the step F.
Preferably, the carding machine used for pre-carding in the step B is a cover plate type carding machine.
Preferably, the carding machine used for the secondary carding in the step F is a wide-width roller type carding machine or a cover plate type carding machine.
Preferably, the device for ribbon lap in the step C is a ribbon lap combination machine.
Preferably, the parallel connection of the cotton rolls in the secondary carding of the step F is carried out before the rewinding and the drying in the step E, or after the rewinding and the drying in the step E.
Preferably, step F further comprises cross-lapping after the second carding.
Preferably, the cross lapping is carried out in a manner of reciprocating and interlacing according to the fiber direction of the fiber web.
The invention provides an efficient production method of an all-cotton medical and sanitary non-woven material, which comprises the following steps: A. opening and cleaning: sequentially grabbing, opening, mixing and removing impurities from a cotton fiber raw material to obtain cotton fibers; B. pre-carding: b, carding the cotton fibers obtained in the step A to obtain raw strips; C. strip and roll: combining the raw strips obtained in the step B into a roll to obtain a cotton roll; D. bleaching: degreasing and bleaching the cotton roll obtained in the step C to obtain a bleached cotton roll; E. rewinding and drying: d, unfolding and drying the bleaching-free cotton roll obtained in the step D to obtain a dry cotton layer; the sequence of the unfolding and the drying can be changed; F. secondary carding: e, carding the dried cotton layer obtained in the step E for the second time to obtain a fiber web; G. and (3) water jetting: and F, carrying out spunlace on the fiber web obtained in the step F to obtain the all-cotton medical and sanitary non-woven material. The cotton fiber raw material is subjected to opening and cleaning to remove partial impurities, then is carded into a single fiber state, removes fine impurities, most cotton knots and partial short fibers, and is output in a raw strip form; and then, combining and stretching the raw slivers obtained after pre-carding through a sliver-to-roll procedure to form a fiber net with a certain gram weight, winding the fiber net into a roll, sequentially degreasing, bleaching, rewinding and drying to meet the requirement of secondary carding, and finally obtaining the all-cotton medical and sanitary non-woven material through secondary carding and spunlace reinforcement. The invention shortens the production line by using the strip and coil procedure, avoids secondary opening of the fiber after bleaching, ensures higher strength, surface density and thickness of the final non-woven material, and avoids defects of non-woven products caused by excessive opening and carding.
The invention has the following beneficial effects:
1. the invention adopts a dewatering and bleaching process before spunlace, namely a dewatering and bleaching process after pre-carding and before secondary carding, which specifically comprises the following steps: strip rolling → degreasing → bleaching → washing → reverse rolling → drying; in the prior pre-bleaching technology, the bleaching process is carried out after pre-carding and before secondary carding, and the process specifically comprises the following steps: recycling → cake making → degreasing → bleaching → washing → opening → drying → packing → opening; it can be seen that the invention reduces the working procedures of the previous bleaching process from 9 to 6, thereby greatly reducing intermediate links.
2. Compared with the prior post bleaching technology, the post bleaching technology comprises the following steps: dewatering → wet winding → degreasing → bleaching → washing → rewinding → drying; compared with the method of the invention, the bleaching process is not much different, but the whole process shows that the process of the second opening is added after the fiber is pre-carded and before the fiber enters the second carding, namely: reclaim → pack → clear. The invention does not need secondary cleaning, can directly rewind the cotton rolls after being decoloured and dried and then carry out secondary carding in the carding machine, also reduces intermediate links, and avoids the possibility that friction pilling neps are increased and defects are formed on final finished products due to secondary cleaning.
3. According to the production method provided by the invention, the pre-bleaching technology is adopted, and the friction force on the surface of the fiber is increased due to the reduction of fat and wax on the surface of the cotton fiber after bleaching, so that the fiber is more likely to be tangled in the carding process. The entanglement has the advantages that the fibers are combined more tightly, the strength of the fiber web is higher, and the mechanical property of the spunlace nonwoven material obtained by spunlace reinforcement is better; the detriments of such entanglement are: on the premise that the friction force is increased, frequent opening can lead to excessive opening, and the fiber web is rubbed to be pilling, so that more defects are formed on the fiber web. The use of the strip and roll procedure replaces the link of secondary cleaning, thereby avoiding the harm caused by the entanglement and keeping the advantages.
4. The production method provided by the invention has the advantages of few intermediate links, less investment, less labor, few defects of final products, low production cost and high cloth cover quality, and the finally produced all-cotton medical and sanitary non-woven material has good mechanical property, is softer and more skin-friendly, is sanitary and reliable, and is nontoxic and non-allergenic.
Drawings
FIG. 1 is a process flow diagram of a method for efficiently producing an all-cotton medical nonwoven material according to example 1 of the present invention.
Detailed Description
The invention provides an efficient production method of an all-cotton medical and sanitary non-woven material, which comprises the following steps:
A. opening and cleaning: sequentially grabbing, opening, mixing and removing impurities from a cotton fiber raw material to obtain cotton fibers;
B. pre-carding: b, carding the cotton fibers obtained in the step A to obtain raw slivers;
C. strip rolling: combining the raw strips obtained in the step B into a roll to obtain a cotton roll;
D. bleaching: degreasing and bleaching the cotton roll obtained in the step C to obtain a bleached cotton roll;
E. rewinding and drying: d, unfolding and drying the bleaching-free cotton roll obtained in the step D to obtain a dry cotton layer; the sequence of the unfolding and the drying can be changed;
F. secondary carding: e, carding the dried cotton layer obtained in the step E for the second time to obtain a fiber web;
G. and (3) water punching: and F, carrying out spunlace on the fiber web obtained in the step F to obtain the all-cotton medical and sanitary non-woven material.
The invention sequentially picks, opens, mixes and removes impurities from cotton fiber raw materials to obtain cotton fibers. According to the invention, the cotton fiber raw material is sequentially grabbed, opened, mixed and subjected to impurity removal to remove part of impurities in the cotton fiber raw material, and the cotton fiber is uniformly mixed.
The operation of grabbing, opening, mixing and impurity removal is not specially limited, and the technical scheme of grabbing, opening, mixing and impurity removal which is well known by the technical personnel in the field can be adopted.
In the present invention, the cotton fiber material is preferably cotton lint, or cotton lint and combed noil. In the present invention, the lint is preferably a 100% pure natural, ungreased lint without degreasing and bleaching. The source of the cotton fiber raw material is not particularly limited in the present invention, and a commercially available product well known to those skilled in the art may be used.
After the cotton fiber is obtained, the cotton fiber is carded by the carding machine to obtain the raw sliver. The invention enables the cotton fiber to reach a single fiber state through pre-carding, removes fine impurities, most neps and partial short fibers in the cotton fiber, and outputs the cotton fiber in a raw strip form, so that the subsequent strip and roll process can be conveniently carried out.
In the present invention, the carding machine used for pre-carding is preferably a flat card.
After the raw strips are obtained, the raw strips are combined into a roll to obtain the cotton roll. According to the invention, the raw slivers obtained after pre-carding are combined and stretched to form a fiber net with a certain gram weight through the sliver-to-roll process, and the fiber net is wound into a roll, so that the production line is shortened, and the secondary opening of the fibers after bleaching is avoided, thereby ensuring that the final non-woven material has higher strength, surface density and thickness, and avoiding defects of non-woven products caused by excessive opening and carding.
In the present invention, the apparatus for ribbon lap is preferably a ribbon lap combination machine. The specification and the type of the strip lap combining machine are not specially limited, and a commercially available strip lap combining machine can be adopted.
After the cotton roll is obtained, the cotton roll is degreased and bleached to obtain a bleached cotton roll. The invention removes substances such as fat, wax, pectin, protein and the like on the surface of the cotton fiber through degreasing treatment, and improves the whiteness of the cotton fiber through bleaching.
According to the invention, the cotton roll is degreased and bleached firstly and then is carded for the second time, the friction force on the surface of the fiber is increased due to the reduction of fat and wax in the substance on the surface of the cotton fiber after the cotton roll is degreased and bleached, and the fiber is more likely to be entangled in the carding process, so that the bonding between the fibers is tighter, the strength of the fiber web is stronger, and the mechanical property of the spunlace nonwoven material obtained after the spunlace reinforcement is better; meanwhile, the invention replaces the link of secondary cleaning by adopting strip and coiling, thereby avoiding the defects of friction pilling and more defects formed on the fiber web caused by the increase of the friction force of the fibers after bleaching.
The degreasing and bleaching operations are not particularly limited in the present invention, and a degreasing and bleaching technical scheme well known to those skilled in the art may be adopted.
After bleaching is finished, the bleaching product is preferably cleaned to obtain the bleaching cotton roll. The invention preferably removes the residual auxiliary agent on the cotton fiber by washing.
After the bleaching-free cotton roll is obtained, the bleaching-free cotton roll is unfolded and dried to obtain a dry cotton layer. The method is used for unfolding and drying the bleaching-free cotton roll so as to remove the moisture in the cotton layer.
The operation of the unfolding and drying is not particularly limited in the present invention, and the technical scheme of unfolding and drying known to those skilled in the art can be adopted.
According to the invention, a dewatering device is preferably added at the inlet of the equipment for drying to remove moisture in the cotton layer, so that the energy consumption required by drying is reduced.
In the present invention, the order of the unwinding and drying may be reversed.
After the dry cotton layer is obtained, the dry cotton layer is carded for the second time to obtain the fiber web. The invention further combs the cotton fiber into a net through secondary combing, increases the width of the net surface, improves the single machine output, improves the cotton mixing effect and improves the net surface quality.
In the present invention, the carding machine used for the secondary carding is preferably a wide-width roller type carding machine or a flat card type carding machine, more preferably a wide-width roller type carding machine. In the invention, the width of the fiber web obtained by secondary carding is preferably 2.5-3.6 m; the yield of the secondary carding is preferably 250-600 kg/h.
In the present invention, the parallel connection of the rolls in the secondary carding is preferably performed before the rewinding and the drying, or after the rewinding and the drying, and more preferably before the rewinding and the drying.
In the invention, the cotton feeding mode of the secondary carding is preferably as follows: the dried cotton layer is directly fed into the cotton feeding part of the carding machine or the cotton roll is directly fed into the cotton feeding part of the carding machine through the rewinding process. The invention preferably adopts the cotton feeding mode, further reduces the processing procedures, simultaneously reduces the friction of the fiber, and avoids the pilling and neps increase of the fiber web.
In the invention, opening and impurity removal are not carried out before the secondary carding.
In the present invention, it is preferred that the secondary carding further comprises cross-lapping. The invention preferably improves the thickness, the uniformity and the longitudinal and transverse strength ratio of the fiber web by cross lapping the fibers, thereby improving the product quality.
In the present invention, the cross-lapping is preferably performed in a manner of being reciprocally staggered in the fiber direction of the web.
After the fiber web is obtained, the fiber web is subjected to water-jetting to obtain the all-cotton medical and sanitary non-woven material. The invention fully entangles the fibers in the fiber web by spunlace, thereby improving the strength of the product; meanwhile, the spunlace can further remove the remaining tiny impurities in the fibers and the residual auxiliary agent during bleaching, thereby improving the quality of the product.
In the present invention, the hydroentangling is preferably high pressure hydroentangling; the hydroentangling is preferably performed on both the front and back sides of the web.
After the spunlace is finished, the product obtained by the spunlace is preferably dried to obtain the all-cotton medical and sanitary non-woven material. In the present invention, the apparatus for drying is preferably a dryer; the specification and parameters of the dryer are selected according to the thickness of the fiber web and the yield of the product.
After the all-cotton medical and sanitary non-woven material is obtained, the all-cotton medical and sanitary non-woven material is preferably coiled, so that the all-cotton medical and sanitary non-woven material is coiled into a coiled material and is convenient to store.
In the present invention, the apparatus for winding is preferably a winder.
The cotton fiber raw material is subjected to opening and cleaning to remove partial impurities, then is carded into a single fiber state, removes fine impurities, most cotton knots and partial short fibers, and is output in a raw strip form; and then, combining and stretching the raw slivers obtained after pre-carding through a sliver-to-roll procedure to form a fiber net with a certain gram weight, winding the fiber net into a roll, sequentially degreasing, bleaching, rewinding and drying to meet the requirement of secondary carding, and finally obtaining the all-cotton medical and sanitary non-woven material through secondary carding and spunlace reinforcement. The invention shortens the production line by using the strip and coil procedure, avoids secondary opening of the fiber after bleaching, ensures higher strength, surface density and thickness of the final non-woven material, and avoids defects of non-woven products caused by excessive opening and carding.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
(1) Preparing materials: preparing 100% pure natural unginned cotton which is not degreased and bleached;
(2) opening and cleaning: sequentially grabbing, opening, mixing and removing impurities from the seed and skin removed cotton prepared in the step (1) to obtain cotton fibers, and uniformly and stably conveying the cotton fibers to a cotton feeding box of a carding machine;
(3) pre-carding: carding the cotton fibers obtained in the step (1) by using a cover plate type carding machine to achieve a single fiber state, and outputting the single fiber state in a raw sliver form; opening raw cotton fibers, feeding the opened raw cotton fibers into a cotton feeding box matched with a cover plate type carding machine, and uniformly feeding the raw cotton fibers into the carding machine under the condition of ensuring the consistency of fiber density in the cotton feeding box; carding the fiber into a single fiber state by a carding machine and simultaneously removing fine impurities, short fibers and neps left in the fiber;
(4) strip rolling: combining and stretching the raw slivers obtained in the step (3) by using a sliver-lap combination machine to form a fiber net, and winding the fiber net into a lap to obtain a lap;
(5) degreasing: removing fat, wax, pectin and protein on the surface of cotton fiber through the cotton roll obtained in the step (4) by chemical degreasing treatment to obtain a degreased cotton roll; the reduction of fat and wax in the substance on the surface of the cotton fiber after degreasing can increase the friction force on the surface of the fiber, the fiber is easy to be tangled in the carding process, the combination between the fibers is more compact, the strength of the fiber web is higher, the mechanical property of the spunlace non-woven material obtained after spunlace reinforcement is better, and the loss of the fiber in the carding process is small;
(6) bleaching: improving the whiteness of cotton fibers by chemically bleaching the degreased cotton rolls obtained in the step (5) to obtain bleached cotton rolls;
(7) cleaning: cleaning the bleaching-removed cotton rolls obtained in the step (6) to remove the auxiliary agents on the cotton fibers;
(8) rewinding: the cotton rolls cleaned in the step (7) are re-unfolded so as to enter a secondary carding process after being dried, the bleached cotton rolls are discharged in parallel according to the width of a carding machine during secondary carding, and the cotton rolls are directly fed into the carding machine, so that the secondary opening and cleaning process of cotton fibers is reduced, and more defects caused by the cotton rolls on the final non-woven material are avoided;
(9) drying: drying the rewound cotton rolls obtained in the step (8) to obtain dry cotton rolls so as to enter a secondary carding process, adding a dehydration device at an inlet of a drying device, and taking away residual moisture in the cleaned cotton rolls so as to reduce energy consumption required by drying;
(10) secondary carding: further carding the dried cotton rolls obtained in the step (9) into a web by using a wide-width roller type carding machine to obtain a fiber web, wherein the web width is 3.6m, and the single-station yield is 600 kg/h; the dried cotton fiber is not fed through an air pressure cotton box which is standard and matched with the carding machine any more, but the cotton roll is directly fed into a cotton feeding part of the carding machine through rewinding, so that the processing procedures are further reduced, and the possibility of increasing cotton neps caused by fiber friction and pilling is reduced;
(11) cross lapping: repeatedly lapping the fiber web output in the step (10) in a reciprocating and staggered mode according to the requirement of the gram weight specification of a final product to obtain a multilayer fiber web; the thickness, the uniformity and the longitudinal and transverse strength ratio of the fiber web are improved, and the product quality is improved;
(12) and (3) water jetting: reinforcing the front side and the back side of the multilayer fiber web obtained in the step (11) by using high-pressure water of a spunlace machine, fully entangling fibers in the fiber web, and further removing residual micro impurities and auxiliaries during bleaching from the fibers to improve the product quality, wherein the reinforced fiber web has higher strength;
(13) drying: drying the wet cloth processed by the spunlace in the step (12) by using a dryer to obtain the all-cotton medical and sanitary non-woven material, and selecting and matching the specification and parameters of the dryer according to the thickness of the fiber web and the yield of the product;
(14) and (3) coiling a finished product: automatically winding the all-cotton medical non-woven material obtained in the step (13) into a roll by using a winding machine.
Fig. 1 is a process flow diagram of an efficient production method of an all-cotton medical and sanitary non-woven material in the embodiment, and the all-cotton medical and sanitary non-woven coiled material is obtained through material preparation, opening and cleaning, pre-carding, strip and rolling, degreasing, bleaching, cleaning, rewinding, drying, secondary carding, cross lapping, spunlacing, drying and finished product winding.
The embodiment shows that the high-efficiency production method of the all-cotton medical and sanitary non-woven material shortens the production line by using the strip-to-roll process, avoids secondary cleaning of the fiber after bleaching, ensures that the final non-woven material has higher strength, surface density and thickness, and avoids defects of non-woven products caused by excessive opening and carding.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (9)
1. An efficient production method of an all-cotton medical and sanitary non-woven material comprises the following steps:
A. opening and cleaning: sequentially grabbing, opening, mixing and removing impurities from a cotton fiber raw material to obtain cotton fibers;
B. pre-carding: b, carding the cotton fibers obtained in the step A to obtain raw slivers;
C. strip rolling: combining the raw strips obtained in the step B into a roll to obtain a cotton roll;
D. bleaching: degreasing and bleaching the cotton roll obtained in the step C to obtain a bleached cotton roll;
E. rewinding and drying: d, unfolding and drying the bleaching cotton roll obtained in the step D to obtain a dry cotton layer; the sequence of the unfolding and the drying can be changed;
F. secondary carding: e, secondary carding is carried out on the dried cotton layer obtained in the step E to obtain a fiber web;
G. and (3) water jetting: and F, carrying out spunlace on the fiber web obtained in the step F to obtain the all-cotton medical and sanitary non-woven material.
2. The method for efficiently producing all-cotton medical and sanitary nonwoven materials according to claim 1, wherein the cotton fiber raw material in the step A is all-cotton fiber.
3. The method for efficiently producing all-cotton medical and sanitary non-woven material according to claim 1, wherein the opening and impurity removal are not performed before the secondary carding in the step F.
4. The method for efficiently producing all-cotton medical and sanitary nonwoven material according to claim 1, wherein the carding machine used for the pre-carding in the step B is a flat card.
5. The method for efficiently producing all-cotton medical and sanitary nonwoven material according to claim 1, wherein the carding machine used in the secondary carding in step F is a wide-width roller type carding machine or a flat card type carding machine.
6. The method for efficiently producing all-cotton medical and sanitary nonwoven material according to claim 1, wherein the equipment for ribbon lap in step C is a ribbon lap combination machine.
7. The method for efficiently producing all-cotton medical nonwoven material according to claim 1, wherein the parallel connection of the rolls in the secondary carding in the step F is performed before the rewinding and drying in the step E, or after the rewinding and drying in the step E.
8. The method for efficiently producing all-cotton medical and sanitary nonwoven material according to claim 1, wherein the secondary carding in step F further comprises cross-lapping.
9. The method for efficiently producing all-cotton sanitary nonwoven material according to claim 8, wherein the cross-lapping is performed in such a manner that the lapping is performed in a reciprocating and staggered manner in the fiber direction of the web.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005010261A2 (en) * | 2003-07-25 | 2005-02-03 | Sanitars S.R.L. | Woven/non-woven fabric and method and apparatus for making the same |
| US20050070192A1 (en) * | 2002-07-31 | 2005-03-31 | Sanitars S.R.I. | Woven/non-woven fabric and method and apparatus for making the same |
| JP2010168676A (en) * | 2009-01-21 | 2010-08-05 | Kakui Kk | Method for producing patterned nonwoven fabric sheet, and device for forming pattern on nonwoven fabric sheet |
| CN102051765A (en) * | 2009-10-28 | 2011-05-11 | 稳健实业(深圳)有限公司 | Dyed cotton spun-laced production process and product |
| CN105088530A (en) * | 2015-09-18 | 2015-11-25 | 江雷 | Production method for all-cotton spunlace non-woven fabric for medical health |
| CN108265391A (en) * | 2018-03-05 | 2018-07-10 | 奥美医疗用品股份有限公司 | A kind of production method of non-woven cotton |
| CN112522858A (en) * | 2020-11-27 | 2021-03-19 | 湖北欣柔卫生用品股份有限公司 | Production method of pre-bleaching small-micropore all-cotton spunlace non-woven fabric |
-
2022
- 2022-04-28 CN CN202210470566.5A patent/CN114672926A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050070192A1 (en) * | 2002-07-31 | 2005-03-31 | Sanitars S.R.I. | Woven/non-woven fabric and method and apparatus for making the same |
| WO2005010261A2 (en) * | 2003-07-25 | 2005-02-03 | Sanitars S.R.L. | Woven/non-woven fabric and method and apparatus for making the same |
| JP2010168676A (en) * | 2009-01-21 | 2010-08-05 | Kakui Kk | Method for producing patterned nonwoven fabric sheet, and device for forming pattern on nonwoven fabric sheet |
| CN102051765A (en) * | 2009-10-28 | 2011-05-11 | 稳健实业(深圳)有限公司 | Dyed cotton spun-laced production process and product |
| CN105088530A (en) * | 2015-09-18 | 2015-11-25 | 江雷 | Production method for all-cotton spunlace non-woven fabric for medical health |
| CN108265391A (en) * | 2018-03-05 | 2018-07-10 | 奥美医疗用品股份有限公司 | A kind of production method of non-woven cotton |
| CN112522858A (en) * | 2020-11-27 | 2021-03-19 | 湖北欣柔卫生用品股份有限公司 | Production method of pre-bleaching small-micropore all-cotton spunlace non-woven fabric |
Non-Patent Citations (1)
| Title |
|---|
| 纺织工业部科技发展司, 北京：中国纺织出版社 * |
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Application publication date: 20220628 |