CN102051765A - Dyed cotton spun-laced production process and product - Google Patents
Dyed cotton spun-laced production process and product Download PDFInfo
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- CN102051765A CN102051765A CN2009101102622A CN200910110262A CN102051765A CN 102051765 A CN102051765 A CN 102051765A CN 2009101102622 A CN2009101102622 A CN 2009101102622A CN 200910110262 A CN200910110262 A CN 200910110262A CN 102051765 A CN102051765 A CN 102051765A
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Abstract
The invention is applied in the field of non-woven fabrics, and provides a dyed cotton spun-laced production process and a dyed cotton spun-laced product. The process comprises the following steps of: blowing, degreasing, bleaching, dyeing, primary drying, carding, lapping, spinning-lacing, secondary drying and finished product coiling. The dyed cotton spun-laced product obtained by the process has multiplayer dyed cotton fibers, and the dyed cotton fiber of each layer contains multiple colors and can also contain one color. Spinning-lacing and dyeing in the traditional dyed cotton spun-laced production process are changed into dyeing and spinning-lacing, only partial cotton fibers before spinning-lacing are dyed, then un-dyed cotton fibers and the dyed fibers are blended in different modes, and finally the cotton fibers of different colors are fully entwisted by the spinning-lacing treatment and the colors are distributed uniformly, so that the dyed cotton spun-laced products of different styles can be obtained, and meanwhile, the purpose of obtaining good dyeing effect with little dye is also fulfilled; and compared with the traditional process, the production cost is saved.
Description
Technical field
The invention belongs to the non-weaving cloth technical field, relate in particular to cotton water thorn production technology of a kind of dyeing and product.
Background technology
It is raw material that Hydroentangled product generally adopts natural cotton, utilizes the high pressure liquid drugs injection to spray the cotton fiber net, fiber in the fiber web is fully tangled form.Its because of the raw material abundance, handle simple and advantages such as softness, good water absorption are used widely.At present, the production technology of cotton Hydroentangled product of dyeing is: blowing-degreasing-bleaching-oven dry-combing-lapping-water thorn-oven dry-dyeing-finished product batches, in this production method, because the cotton fiber mat behind the water thorn begins to take shape the Hydroentangled product with lines, when being dyeed, it needs the Hydroentangled product of monoblock is dyeed, need more dyestuff, cost is higher.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of cotton water thorn of dyeing production technology of saving production cost.
For solving the problems of the technologies described above, technical scheme of the present invention is: the cotton water thorn of a kind of dyeing production technology is provided, and its processing step is as follows:
(1) blowing: raw cotton is carried out removal of impurities;
(2) degreasing: wax on the raw cotton behind the blowing and grease are removed;
(3) bleaching: it is cotton to obtain bleaching;
(4) dyeing: at least a portion is bleached cotton dyeing obtain the dyeing cotton;
(5) oven dry for the first time: the moisture in the dyeing cotton in the step (4) is removed;
(6) combing: with cotton shredding and the suitable web that forms of comb that obtains in step (3) and (5);
(7) lapping: the web that combing is formed spreads out after superimposed by the direction of its cotton fiber is back and forth staggered;
(8) water thorn: utilize High-Pressure Water that web is tangled;
(9) oven dry for the second time: remove the moisture in the web that anhydrates after stinging;
(10) finished product batches.
Further, also comprise before the described bleaching process poststaining the cotton operation of drying of bleaching.
Further, the dyeing cotton that obtains in the described dyeing process is at least a kind of dyeing cotton of color.
Further, will carry out shredding and comb after the mixing of the cotton in step (3) and (5) in the described combing operation along forming web.
Perhaps, in the described combing operation cotton in step (3) and (5) is carried out shredding and comb respectively along forming webs by color different.
Further, in the described lapping operation web by the different cross lamination of color.
Further, described water thorn processing procedure comprises that pre-water thorn, plain net water thorn and rotary drum water thorn combine.
The present invention also provides a kind of dyeing cotton Hydroentangled product, and it comprises the multi-layer dyeing cotton fiber.
Further, described dyeing cotton fiber comprises multiple color.
Perhaps, described dyeing cotton fiber is a kind of color.
The present invention is applicable to the non-weaving cloth technical field, and cotton water thorn production technology of a kind of dyeing and product are provided, and it comprises following processing step: the blowing-degreasing-bleaching-dyeing-oven dry-combing first time-lapping-water oven dry-finished product thorn-second time batches.The cotton Hydroentangled product of dyeing that is obtained by above-mentioned technology has the multi-layer dyeing cotton fiber, and every layer of dyeing cotton fiber comprises multiple color, also can be a kind of color.The present invention becomes dyeing back water thorn earlier with the first water thorn poststaining in the cotton water thorn of the traditional dyeing production technology, in the traditional handicraft, cotton fiber mat behind the water thorn begins to take shape the cotton Hydroentangled product of the dyeing with lines, when being dyeed, it needs the cotton Hydroentangled product of the dyeing of monoblock is dyeed, and the back of the dyeing earlier water thorn among the present invention, only need the part cotton fiber before the water thorn is dyeed, cross lapping after then undyed cotton fiber being mixed back combing and lapping with coloured fibre or separating combing, by the processing of water thorn the cotton fiber of different colours fully being tangled at last makes distribution of color even, thereby can obtain to have the cotton Hydroentangled product of dyeing of different-style, also reached simultaneously the purpose that adopts less dyestuff to obtain better Color, compare with traditional technology, saved production cost.
Description of drawings
Fig. 1 is the cotton water thorn of dyeing of the present invention technological process of production figure;
Fig. 2 is the structural representation of a kind of cotton Hydroentangled product that dyes of the present invention;
Fig. 3 is the structural representation of the cotton Hydroentangled product of another kind of dyeing of the present invention.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Embodiment one:
As shown in Figure 2, be the cotton Hydroentangled product 1 of a kind of dyeing provided by the invention, it comprises multi-layer dyeing cotton fiber 11, and every layer of dyeing cotton fiber 11 formed by filament 111 cross-cutting distributions with secondary colour.
As shown in Figure 1, the present invention provides a kind of production technology of producing the cotton Hydroentangled product 1 of above-mentioned dyeing simultaneously, comprises following processing step:
(1) get the raw materials ready: with raw cotton is that the seed gined cotton that goes of pure natural is ready to, in order to using.
(2) blowing: utilize impurity, fault in the scutcher removing raw cotton, this step is known technology, and is identical with prior art.
(3) degreasing: wax on the cotton fiber and grease are removed, strengthened the water imbibition of cotton fiber, this step is identical with degreasing process of the prior art.
(4) bleaching: the bleaching cotton that acquisition has higher whiteness, this step is also identical with bleaching process of the prior art.
(5) oven dry for the first time: adopt dryer to toast the bleaching cotton that obtains drying to bleaching cotton.Conventional dryers is plain net or cylinder drying type dryer, utilizes the hot gas that air exhauster is discharged in the dryer to make the cotton water evaporates of bleaching.When baking is cotton, will bleaches cotton and fully tear up, pave in the feeding dryer, wet evenly to guarantee to do.
(6) dyeing: it is cotton that the part dyeing in the bleaching cotton after will drying obtains dyeing.The bleaching cotton that this part is used for dyeing can be dyed a kind of color, also can separately dye different colors according to actual needs.Can certainly be with one or more colors of the cotton all dyeing of the bleaching after the oven dry.The general beam dyeing machine that uses when dyeing to cotton.Main, pair two dye liquor cyclic processes that beam dyeing machine comprises.In " major cycle " process, the dye solution that has prepared is through after the heat exchanger heats, by dye liquor jet ejection, dye liquor can penetrate cotton by complete infiltrate under action of pressure under the effect of main pump, and then enters heat exchanger and carry out next one and pay and circulate.And in " paying circulation ", dye liquor in the dye vat body is in the process of heating, volumetric expansion, dye liquor enters charging basket, the jet that enters dye liquor under the effect of charge pump again begins next major cycle, constantly carry out above-mentioned dyeing cycle, the configuration of dyeing time and temperature, dye liquor requires to control according to the color of finished product.In this beam dyeing machine, line-spacing that axle core mesh is separated by or row are apart from only being several millimeters, and mesh is staggered, thereby have strengthened the permeability of dye liquor to cotton fiber, improved dye liquor tinctorial yield, make painted more even, Color is better.
(7) oven dry for the second time: the moisture in the cotton of will dyeing is removed.
(8) combing: undyed bleaching cotton and dyeing cotton are mixed the back shredding by a certain percentage and comb along forming web.The mixed proportion of Cai Yonging decides according to the color of actual finished product herein, when the requirement of finished product color is more bright-coloured, can adopt more dyeing cotton, when the requirement of finished product color is lighter, can adopt less dyeing cotton.Described shredding and comb are suitable promptly to be to utilize carding machine earlier cotton to be resolved into the filament state, i.e. thread filament 111 as shown in Figure 2, utilize carding machine to filament 111 vertically that its comb is suitable by fiber again, also can remove impurity, short flannel and staple fibre in the cotton in this course, and long fiber is stretching, make interfibrous tension force perform to maximum.According to the actual product needs, the combing in this operation can be carried out repeatedly.
(9) lapping: the web that combing is formed spreads out after superimposed by the direction of its cotton fiber is back and forth staggered, can strengthen the phase mutual friction obvolvent tension force between the cotton fiber like this, guarantees the tensile-elasticity of finished product.
(10) water thorn: utilize the High-Pressure Water of the high pressure liquid drugs injection generation of spun-laced machine that web is carried out front injection and reverse side injection, the fiber in the web is fully tangled, further reinforce the bonding tension force of cotton fiber obvolvent, strengthen the tensile-elasticity of finished product.In the water thorn operation of present embodiment, at first carry out pre-water thorn by carrying lace curtaining or metal lace curtaining that superimposed web is sent to the device of prewetting, the described device of prewetting is roller or cascade.But by the fluffy web of pre-water thorn compacting, get rid of the air in the web, make web enter the energy that water thorn Qu Houneng absorbs water jet effectively, with reinforcing fibre entanglement effect.Web after water stings in advance enters water thorn district and carries out the reinforcing of water thorn.Common water thorn reinforcing mode has the water thorn that plain net water thorn is reinforced, rotary drum water stings reinforcing and plain net combines with rotary drum to reinforce three kinds of forms.Adopt plain net to combine in the present embodiment and carry out the reinforcing of water thorn with rotary drum, rotary drum water thorn can make cotton fiber produce good entanglement, formation has the web of certain stretching and tearing strength, plain net water thorn then can be modified the neat and well spaced degree of web face, by combination with dual mode, can make staggered more fully, the entanglement of filament in the web, form the cotton Hydroentangled product of the dyeing that has preliminary lines as shown in Figure 2.
(11) oven dry for the third time: remove the moisture in the web that anhydrates after stinging.
(12) finished product batches.
Embodiment two:
As shown in Figure 3, be the cotton Hydroentangled product 2 of another kind of dyeing provided by the invention, it comprises multi-layer dyeing cotton fiber 21, and every layer of dyeing cotton fiber 21 is different colors, and the cotton fiber of different colours is alternately laminated at interval.In the present embodiment, described dyeing cotton fiber 21 comprises white cotton fiber 211 and red cotton fiber 212, wherein red cotton fiber 212 places between the two-layer white cotton fiber 211, and white cotton fiber 211 is formed by filament 2111 cross-cutting distributions of white, and red cotton fiber 212 is formed by the filament (not shown) cross-cutting distribution of redness.
The present invention provides a kind of production technology of producing the cotton Hydroentangled product 2 of above-mentioned dyeing simultaneously, comprises following processing step:
(1) get the raw materials ready: with raw cotton is that the seed gined cotton that goes of pure natural is ready to, in order to using.
(2) blowing: utilize impurity, fault in the scutcher removing raw cotton, this step is known technology, and is identical with prior art.
(3) degreasing: wax on the cotton fiber and grease are removed, strengthened the water imbibition of cotton fiber, this step is identical with degreasing process of the prior art.
(4) bleaching: the bleaching cotton that acquisition has higher whiteness, this step is also identical with bleaching process of the prior art.
(5) oven dry for the first time: adopt dryer to toast the bleaching cotton that obtains drying to bleaching cotton.Conventional dryers is plain net or cylinder drying type dryer, utilizes the hot gas that air exhauster is discharged in the dryer to make the cotton water evaporates of bleaching.When baking is cotton, will bleaches cotton and fully tear up, pave in the feeding dryer, wet evenly to guarantee to do.
(6) dyeing: the part in the bleaching cotton after will drying is dyed the red red staining cotton that obtains.The general beam dyeing machine that uses when dyeing to cotton.Main, pair two dye liquor cyclic processes that beam dyeing machine comprises.In " major cycle " process, the orchil liquid that has prepared is through after the heat exchanger heats, by dye liquor jet ejection, dye liquor can penetrate cotton by complete infiltrate under action of pressure under the effect of main pump, and then enters heat exchanger and carry out next one and pay and circulate.And in " paying circulation ", red dye liquor in the dye vat body is in the process of heating, volumetric expansion, dye liquor enters charging basket, the jet that enters red dye liquor under the effect of charge pump again begins next major cycle, constantly carry out above-mentioned dyeing cycle, the configuration of dyeing time and temperature, dye liquor requires to control according to the color of finished product.In this beam dyeing machine, line-spacing that axle core mesh is separated by or row are apart from only being several millimeters, and mesh is staggered, thereby have strengthened the permeability of dye liquor to cotton fiber, improved dye liquor tinctorial yield, make painted more even, Color is better.
(7) oven dry for the second time: the moisture in the red staining cotton is removed.
(8) combing: undyed bleaching cotton and dyeing cotton are carried out shredding and suitable white web and the red web of forming of comb respectively.Described shredding and comb are suitable promptly to be to utilize carding machine earlier cotton to be resolved into the filament state, i.e. thread filament 2111 as shown in Figure 3, utilize carding machine to filament 2111 vertically that its comb is suitable by fiber again, also can remove impurity, short flannel and staple fibre in the cotton in this course, and long fiber is stretching, make interfibrous tension force perform to maximum.According to the actual product needs, the combing in this operation can be carried out repeatedly.
(9) lapping: with the different cross lamination of web by color.In the present embodiment, one deck red web in shop between the two-layer white web.As shown in Figure 3, white cotton fiber 211 and red cotton fiber 212 are superimposed with each other, and the red cotton fiber of one deck is arranged between the two-layer white cotton fiber 211, by the different cross lamination of color, can make the distribution of color of product more even like this.Simultaneously, during lapping, the direction that also will guarantee adjacent web cotton fiber can be strengthened the phase mutual friction obvolvent tension force between the cotton fiber like this for back and forth being crisscross arranged, and guarantees the tensile-elasticity of finished product.
(10) water thorn: utilize the High-Pressure Water of the high pressure liquid drugs injection generation of spun-laced machine that web is carried out front injection and reverse side injection, the fiber in the web is fully tangled, further reinforce the bonding tension force of cotton fiber obvolvent, strengthen the tensile-elasticity of finished product.In the water thorn operation of present embodiment, at first carry out pre-water thorn by carrying lace curtaining or metal lace curtaining that superimposed web is sent to the device of prewetting, the described device of prewetting is roller or cascade.But by the fluffy web of pre-water thorn compacting, get rid of the air in the web, make web enter the energy that water thorn Qu Houneng absorbs water jet effectively, with reinforcing fibre entanglement effect.Web after water stings in advance enters water thorn district and carries out the reinforcing of water thorn.Common water thorn reinforcing mode has the water thorn that plain net water thorn is reinforced, rotary drum water stings reinforcing and plain net combines with rotary drum to reinforce three kinds of forms.Adopt plain net to combine in the present embodiment and carry out the reinforcing of water thorn with rotary drum, rotary drum water thorn can make cotton fiber produce good entanglement, formation has the web of certain stretching and tearing strength, plain net water thorn then can be modified the neat and well spaced degree of web face, by combination with dual mode, can make staggered more fully, the entanglement of filament in the web, form the cotton Hydroentangled product of the dyeing that has preliminary lines as shown in Figure 3.
(11) oven dry for the third time: remove the moisture in the web that anhydrates after stinging.
(12) finished product batches.
Can obtain as shown in Figure 3 the cotton Hydroentangled product 2 of dyeing by above technological process.Certainly, herein, the partial bleaching cotton is not limited only to dye redness, also can separately dye different colors according to actual needs.Can certainly be with one or more colors of the cotton all dyeing of the bleaching after the oven dry.
To sum up, the present invention adopts dyeing back water thorn earlier, only need the part cotton fiber before the water thorn is dyeed, cross lapping after then undyed cotton fiber being mixed back combing and lapping with coloured fibre or separating combing, by the processing of water thorn the cotton fiber of different colours fully being tangled at last makes distribution of color even, thereby obtain to have the cotton Hydroentangled product of dyeing of different-style, reached the purpose that adopts less dyestuff to obtain better Color simultaneously, compare with traditional technology, saved production cost.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the cotton water of dyeing stings production technology, it is characterized in that comprising following processing step:
(1) blowing: raw cotton is carried out removal of impurities;
(2) degreasing: wax on the raw cotton behind the blowing and grease are removed;
(3) bleaching: it is cotton to obtain bleaching;
(4) dyeing: at least a portion is bleached cotton dyeing obtain the dyeing cotton;
(5) oven dry for the first time: the moisture in the dyeing cotton in the step (4) is removed;
(6) combing: with cotton shredding and the suitable web that forms of comb that obtains in step (3) and (5);
(7) lapping: the web that combing is formed spreads out after superimposed by the direction of its cotton fiber is back and forth staggered;
(8) water thorn: utilize High-Pressure Water that web is tangled;
(9) oven dry for the second time: remove the moisture in the web that anhydrates after stinging;
(10) finished product batches.
2. the cotton water thorn of dyeing as claimed in claim 1 production technology is characterized in that: also comprise the operation with the cotton oven dry of bleaching before the described bleaching process poststaining.
3. the cotton water thorn of dyeing as claimed in claim 1 production technology, it is characterized in that: the dyeing cotton that obtains in the described dyeing process is at least a kind of dyeing cotton of color.
4. the cotton water thorn of dyeing as claimed in claim 1 production technology is characterized in that: will carry out shredding and comb after the mixing of the cotton in step (3) and (5) along forming web in the described combing operation.
5. the cotton water of dyeing as claimed in claim 1 thorn production technology is characterized in that: in the described combing operation cotton in step (3) and (5) is carried out shredding and comb respectively along the formation webs by color different.
6. the cotton water thorn of dyeing as claimed in claim 5 production technology, it is characterized in that: web is by the different cross lamination of color in the described lapping operation.
7. the cotton water thorn of dyeing as claimed in claim 1 production technology is characterized in that: described water thorn processing procedure comprises that pre-water thorn, plain net water thorn and rotary drum water thorn combine.
8. the cotton Hydroentangled product of dyeing is characterized in that: comprise the multi-layer dyeing cotton fiber.
9. the cotton Hydroentangled product of a kind of dyeing as claimed in claim 8, it is characterized in that: described dyeing cotton fiber comprises multiple color.
10. the cotton Hydroentangled product of a kind of dyeing as claimed in claim 8, it is characterized in that: described dyeing cotton fiber is a kind of color.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101102622A CN102051765A (en) | 2009-10-28 | 2009-10-28 | Dyed cotton spun-laced production process and product |
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| CN2009101102622A CN102051765A (en) | 2009-10-28 | 2009-10-28 | Dyed cotton spun-laced production process and product |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313795A (en) * | 2014-09-22 | 2015-01-28 | 欣龙控股（集团）股份有限公司 | Natural cotton fiber spunlaced nonwoven fabric for medical health and production method thereof |
| CN105088530A (en) * | 2015-09-18 | 2015-11-25 | 江雷 | Production method for all-cotton spunlace non-woven fabric for medical health |
| CN105544090A (en) * | 2016-01-21 | 2016-05-04 | 苏州印丝特纺织数码科技有限公司 | Patterned non-woven fabric with concave-convex patterns and preparing method of patterned non-woven fabric |
| CN106637665A (en) * | 2017-01-18 | 2017-05-10 | 恒天嘉华非织造有限公司 | Online continuous production process of degreased cotton spunlace nonwoven fabric |
| CN106637676A (en) * | 2016-11-01 | 2017-05-10 | 杭州萧山凤凰纺织有限公司 | Method for preparing super-soft spunlaced nonwoven cloth |
| CN108049023A (en) * | 2017-12-12 | 2018-05-18 | 杭州可靠护理用品股份有限公司 | Concave-convex type non-woven fabrics and its application on paper diaper and paper diaper |
| 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 |
| CN110699848A (en) * | 2019-10-18 | 2020-01-17 | 深圳全棉时代科技有限公司 | Preparation method of colored cotton spunlace non-woven fabric and product thereof |
| CN111764049A (en) * | 2020-06-01 | 2020-10-13 | 湖北稳健医疗有限公司 | All-cotton colored nonwoven material, manufacturing method thereof and medical and health care product |
| 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 |
| CN112921497A (en) * | 2021-01-23 | 2021-06-08 | 广州市龙格派服饰有限公司 | Preparation process of warm-keeping, moisture-removing and anti-mite quilt applying long stapled cotton |
| CN114672926A (en) * | 2022-04-28 | 2022-06-28 | 徐州天虹时代纺织有限公司 | Efficient production method of all-cotton medical and sanitary non-woven material |
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2009
- 2009-10-28 CN CN2009101102622A patent/CN102051765A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313795A (en) * | 2014-09-22 | 2015-01-28 | 欣龙控股（集团）股份有限公司 | Natural cotton fiber spunlaced nonwoven fabric for medical health and production method thereof |
| CN105088530B (en) * | 2015-09-18 | 2019-07-26 | 江雷 | Medical and health use non-woven cotton production method |
| CN105088530A (en) * | 2015-09-18 | 2015-11-25 | 江雷 | Production method for all-cotton spunlace non-woven fabric for medical health |
| CN105544090A (en) * | 2016-01-21 | 2016-05-04 | 苏州印丝特纺织数码科技有限公司 | Patterned non-woven fabric with concave-convex patterns and preparing method of patterned non-woven fabric |
| CN106637676A (en) * | 2016-11-01 | 2017-05-10 | 杭州萧山凤凰纺织有限公司 | Method for preparing super-soft spunlaced nonwoven cloth |
| CN106637665A (en) * | 2017-01-18 | 2017-05-10 | 恒天嘉华非织造有限公司 | Online continuous production process of degreased cotton spunlace nonwoven fabric |
| CN108049023A (en) * | 2017-12-12 | 2018-05-18 | 杭州可靠护理用品股份有限公司 | Concave-convex type non-woven fabrics and its application on paper diaper and paper diaper |
| 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 |
| CN110699848A (en) * | 2019-10-18 | 2020-01-17 | 深圳全棉时代科技有限公司 | Preparation method of colored cotton spunlace non-woven fabric and product thereof |
| CN111764049A (en) * | 2020-06-01 | 2020-10-13 | 湖北稳健医疗有限公司 | All-cotton colored nonwoven material, manufacturing method thereof and medical and health care product |
| 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 |
| CN112921497A (en) * | 2021-01-23 | 2021-06-08 | 广州市龙格派服饰有限公司 | Preparation process of warm-keeping, moisture-removing and anti-mite quilt applying long stapled cotton |
| CN114672926A (en) * | 2022-04-28 | 2022-06-28 | 徐州天虹时代纺织有限公司 | Efficient production method of all-cotton medical and sanitary non-woven material |
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Application publication date: 20110511 |