CN117867762A - Preparation process of soft high hydrostatic pressure non-woven fabric - Google Patents
Preparation process of soft high hydrostatic pressure non-woven fabric Download PDFInfo
- Publication number
- CN117867762A CN117867762A CN202410107686.8A CN202410107686A CN117867762A CN 117867762 A CN117867762 A CN 117867762A CN 202410107686 A CN202410107686 A CN 202410107686A CN 117867762 A CN117867762 A CN 117867762A
- Authority
- CN
- China
- Prior art keywords
- melt
- layer
- raw materials
- hydrostatic pressure
- blown
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 70
- 238000009931 pascalization Methods 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 52
- 239000000835 fiber Substances 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000005098 hot rolling Methods 0.000 claims abstract description 19
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- 239000004831 Hot glue Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 29
- 238000001125 extrusion Methods 0.000 claims description 22
- 238000009987 spinning Methods 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 239000000155 melt Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 239000000806 elastomer Substances 0.000 claims description 8
- 229920001971 elastomer Polymers 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 239000004595 color masterbatch Substances 0.000 claims description 6
- 239000012968 metallocene catalyst Substances 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 2
- 238000005507 spraying Methods 0.000 claims 1
- 230000002706 hydrostatic effect Effects 0.000 abstract description 15
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 6
- 239000004902 Softening Agent Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229940037312 stearamide Drugs 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to a preparation process of a soft high hydrostatic pressure non-woven fabric, which comprises the following steps: the preparation of the spun-bonded layer, the preparation of the melt-blown layer and the preparation of the non-woven fabric are provided with a stretching step, a first cold roller is arranged after hot rolling and a second pair of cold rollers is arranged in front of rolling, the stretching step passes through the first cold roller and clamps after hot rolling, heating treatment is carried out, the second cold roller and clamps after the stretching step, the rotation speed of the second cold roller is higher than that of the first cold roller, and the non-woven fabric is finally subjected to the first cold roller and the second cold roller with speed difference to obtain the soft high hydrostatic pressure non-woven fabric. The raw material of the melt-blown layer is improved to be hot melt adhesive base material, the hydrostatic pressure resistance is improved, and meanwhile, the manufactured non-woven fabric is stretched, so that the fiber diameter is reduced, and the softness of the non-woven fabric is improved.
Description
Technical Field
The invention relates to the field of non-woven fabric preparation, in particular to a preparation process of a soft high hydrostatic pressure non-woven fabric.
Background
Meltblown is a material prepared by a process in which a high temperature molten polymer is spun to form fibers and then formed into a web on a collector. Because of their unique properties and manner of preparation, meltblown webs find widespread use in many applications, and nonwoven webs containing meltblown layers are commonly used in the manufacture of sanitary napkins and diapers to provide comfort, moisture absorption, and breathability characteristics.
In the manufacture of the non-woven fabric melt-blown layer, stearic acid amide is usually added as a softening agent in the masterbatch manufacture process, and the stearic acid amide can enable the melt-blown fabric to be softer and improve the hand feeling of the melt-blown fabric, so that the air permeability of the melt-blown fabric can be adjusted. However, adding too much increases the softness and at the same time reduces the coefficient of friction on the surface of the material, which increases the sizing or results in poor slip adhesion, while adding stearamide reduces the hydrostatic pressure resistance of the meltblown layer. The specific problem is that the side pocket is not wet by urine and cannot hold liquid to cause leakage. However, without the addition of a softening agent such as stearic acid amide, the softness of the meltblown layer is greatly reduced, thereby affecting the softness of the nonwoven fabric.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a preparation process of soft high hydrostatic pressure non-woven fabric, the raw material of a melt-blown layer is improved to be a hot melt adhesive base material, the hydrostatic pressure resistance is improved, and meanwhile, the prepared non-woven fabric is stretched, so that the fiber diameter is reduced, and the softness of the non-woven fabric is improved.
In order to solve the technical problems, the invention provides the following technical scheme:
a preparation process of a soft high hydrostatic pressure non-woven fabric comprises the following steps:
(1) Preparation of the spunbond layer: mixing raw materials for preparing the spunbond layer according to a specific proportion, and carrying out melt extrusion, die head filtration, metering spinning, cold air drafting, filament splitting and lapping on the mixed raw materials to obtain the spunbond layer, wherein the raw materials for the spunbond layer comprise: polypropylene slice, soft master batch, elastomer, color master batch and modified master batch;
(2) Preparation of the meltblown layer: mixing the raw materials for preparing the melt-blown layer according to a specific proportion, carrying out melt extrusion, die head filtration, hot air spinning and wire-splitting lapping on the mixed raw materials after metering to obtain the melt-blown layer, wherein the raw materials of the melt-blown layer comprise: melt-blowing special master batches and high hydrostatic pressure master batches;
(3) Preparation of nonwoven fabrics: the method comprises the steps of sequentially forming a spun-bonded layer, two melt-blown layers and a spun-bonded layer from outside to inside, carrying out hot rolling reinforcement on the four-layer structure, and obtaining a non-woven fabric with an SMMS structure through hot rolling, rolling and slitting, wherein S represents the spun-bonded layer, M represents the melt-blown layer, and the ratio of the melt-blown layer is not less than 30%;
the method comprises the steps of hot rolling, a first cold roller, a second pair of cold rollers, a heating treatment, a second cold roller and clamping, wherein a stretching step is arranged between the hot rolling and the rolling, the first cold roller is arranged in front of the rolling, the second cold roller is arranged in front of the rolling, the stretching step is used for carrying out heating treatment after passing through the first cold roller and clamping, the rotating speed of the second cold roller is higher than that of the first cold roller, and the non-woven fabric is finally subjected to the first cold roller and the second cold roller with speed difference to obtain the soft high hydrostatic pressure non-woven fabric.
By adopting the design, the high hydrostatic pressure master batch is added in the manufacture of the melt-blown layer, and the master batch can effectively improve the hydrostatic pressure resistance of the melt-blown layer. After hot rolling, be equipped with tensile step, first chill roll and second chill roll respectively are equipped with two roll bodies, and the non-woven fabrics centre gripping can reduce the temperature after the hot rolling in first chill roll to finalize the design to the non-woven fabrics, later through the heating cabinet, reach the second chill roll and by the centre gripping, the heating cabinet that sets up between first chill roll and second chill roll mainly heats the non-woven fabrics to having certain pliability, prevents to split on the non-woven fabrics surface at tensile in-process, even breaks. Through the speed difference between the first cold roller and the second cold roller, the fiber diameter is further reduced while the non-woven fabric is elongated, and the softness of the non-woven fabric is greatly improved.
Preferably, the mixture ratio of the raw materials of the spun-bonded layer is as follows: 70-80% of polypropylene slice, 1-3% of soft master batch, 10-15% of elastomer, 1-3% of color master batch and 8-9% of modified master batch. If the nonwoven fabric manufactured by adopting the conventional formula is stretched, the fiber diameter is reduced, but the spunbond layer is too soft to support the appearance of the nonwoven fabric. The elastomer is added in the formula, so that the stretched spun-bonded layer can provide better support and keep the shape of the non-woven fabric.
Preferably, the raw material ratio of the melt-blown layer is as follows: 90% -95% of melt-blown special master batch and 5% -10% of high hydrostatic pressure master batch. The self-made high hydrostatic pressure master batch is added, so that the hydrostatic pressure resistance of the melt-blown layer is improved, and the stretched melt-blown layer still maintains higher hydrostatic pressure resistance.
Further, the high hydrostatic pressure masterbatch comprises a metallocene catalyst and a hot melt adhesive binder. The metallocene catalyst is used as a relative molecular weight regulator, the components are distributed more uniformly, the linear density of polypropylene is reduced, and the hydrostatic pressure resistance of the melt-blown layer is further improved.
Preferably, the melt index of the spunbond layer is 30-40g/10min and the melt index of the meltblown layer is 800-1200g/10min. The melt index of the spun-bonded layer is higher, the processing is easier, the melt index of the melt-blown layer is lower, the molecular weight is large, and the strength of the melt-blown layer is better.
Preferably, the preparation process of the spunbond layer comprises the following steps: mixing raw materials of the spun-bonded layer according to a specific proportion, adding the raw materials into extrusion equipment, heating the raw materials to 210-230 ℃, filtering the raw materials to a spinning box through a die head, wherein the extrusion pressure of the spinning box is 5-7Mpa, the wind pressure of cold wind is 2.5-5Kpa, the temperature is 15-25 ℃, and finally, paving and forming the raw materials, wherein the fiber dimension of the spun-bonded layer is 2-3Den. The higher extrusion pressure can better extrude the molten raw material to obtain the spun-bonded layer with lower fiber dimension, and the softness is improved.
Preferably, the preparation process of the melt-blown layer comprises the following steps: mixing the raw materials of the melt-blown layer according to a specific proportion, adding the mixture into extrusion equipment, heating the raw materials to 190-230 ℃, filtering the mixture to a spinning box through a die head, wherein the extrusion pressure of the spinning box is 1.5-3MPa, the air pressure of hot air is 40-70Kpa, the temperature is 220-250 ℃, the injection pressure is 0.05-0.1MPa, and finally, paving and molding the mixture to obtain the melt-blown layer with the fiber degree smaller than 0.5Den. The melt-blown layer has lower melt index, the extrusion pressure is not too high, and the net forming rate of the melt-blown layer is improved.
Preferably, a heating box is arranged between the first cold roller and the second cold roller, and the temperature of the heating box is 150-180 ℃. The temperature in the interval can soften the spun-bonded layer and the melt-blown layer, so that the non-woven fabric is easier to stretch, the non-woven fabric with smaller fiber dimension can be obtained, and the softness is further improved.
Further, the rotation speed of the first cold roller is 50r/min, the rotation speed of the second cold roller is 80r/min, the fiber degree of the spun-bonded layer after stretching is 1.7-1.9Den, and the fiber degree of the melt-blown layer after stretching is less than 0.25Den. Due to the speed difference between the first chill roll and the second chill roll, the fiber diameter of the spunbond layer is reduced from 2-3Den to 1.7-1.9Den, and the fiber diameter of the meltblown layer is reduced from 0.5Den to 0.25Den while the spunbond layer and the meltblown layer are elongated, further improving softness.
In summary, according to the soft high hydrostatic pressure non-woven fabric preparation process, the raw material of the melt-blown layer is changed into the hot melt adhesive base material, the hydrostatic pressure resistance is improved, and meanwhile, the prepared non-woven fabric is stretched, so that the fiber diameter is further reduced, and the softness of the non-woven fabric is greatly improved.
Detailed Description
The present invention will be described in further detail with reference to the following examples and embodiments in order to make the objects, technical solutions and advantages of the present invention more apparent.
A preparation process of a soft high hydrostatic pressure non-woven fabric comprises the following steps:
(1) Preparation of the spunbond layer: mixing raw materials for preparing the spunbond layer according to a specific proportion, and carrying out melt extrusion, die head filtration, metering spinning, cold air drafting, filament splitting and lapping on the mixed raw materials to obtain the spunbond layer, wherein the raw materials for the spunbond layer comprise: polypropylene slice, soft master batch, elastomer, color master batch and modified master batch;
(2) Preparation of the meltblown layer: mixing the raw materials for preparing the melt-blown layer according to a specific proportion, carrying out melt extrusion, die head filtration, hot air spinning and wire-splitting lapping on the mixed raw materials after metering to obtain the melt-blown layer, wherein the raw materials of the melt-blown layer comprise: melt-blowing special master batches and high hydrostatic pressure master batches;
(3) Preparation of nonwoven fabrics: the method comprises the steps of sequentially forming a spun-bonded layer, two melt-blown layers and a spun-bonded layer from outside to inside, carrying out hot rolling reinforcement on the four-layer structure, and obtaining a non-woven fabric with an SMMS structure through hot rolling, rolling and slitting, wherein S represents the spun-bonded layer, M represents the melt-blown layer, and the ratio of the melt-blown layer is not less than 30%;
the method comprises the steps of hot rolling, a first cold roller, a second pair of cold rollers, a heating treatment, a second cold roller and clamping, wherein a stretching step is arranged between the hot rolling and the rolling, the first cold roller is arranged in front of the rolling, the second cold roller is arranged in front of the rolling, the stretching step is used for carrying out heating treatment after passing through the first cold roller and clamping, the rotating speed of the second cold roller is higher than that of the first cold roller, and the non-woven fabric is finally subjected to the first cold roller and the second cold roller with speed difference to obtain the soft high hydrostatic pressure non-woven fabric.
By adopting the design, the high hydrostatic pressure master batch is added in the manufacture of the melt-blown layer, and the master batch can effectively improve the hydrostatic pressure resistance of the melt-blown layer. After hot rolling, be equipped with tensile step, first chill roll and second chill roll respectively are equipped with two roll bodies, and the non-woven fabrics centre gripping can reduce the temperature after the hot rolling in first chill roll to finalize the design to the non-woven fabrics, later through the heating cabinet, reach the second chill roll and by the centre gripping, the heating cabinet that sets up between first chill roll and second chill roll mainly heats the non-woven fabrics to having certain pliability, prevents to split on the non-woven fabrics surface at tensile in-process, even breaks. Through the speed difference between the first cold roller and the second cold roller, the fiber diameter is further reduced while the non-woven fabric is elongated, and the softness of the non-woven fabric is greatly improved.
Preferably, the mixture ratio of the raw materials of the spun-bonded layer is as follows: 70-80% of polypropylene slice, 1-3% of soft master batch, 10-15% of elastomer, 1-3% of color master batch and 8-9% of modified master batch. If the nonwoven fabric manufactured by adopting the conventional formula is stretched, the fiber diameter is reduced, but the spunbond layer is too soft to support the appearance of the nonwoven fabric. The elastomer is added in the formula, so that the stretched spun-bonded layer can provide better support and keep the shape of the non-woven fabric.
Preferably, the raw material ratio of the melt-blown layer is as follows: 90% -95% of melt-blown special master batch and 5% -10% of high hydrostatic pressure master batch. The self-made high hydrostatic pressure master batch is added, so that the hydrostatic pressure resistance of the melt-blown layer is improved, and the stretched melt-blown layer still maintains higher hydrostatic pressure resistance.
Further, the high hydrostatic pressure masterbatch comprises a metallocene catalyst and a hot melt adhesive binder. The metallocene catalyst is used as a relative molecular weight regulator, the components are distributed more uniformly, the linear density of polypropylene is reduced, and the hydrostatic pressure resistance of the melt-blown layer is further improved.
Preferably, the melt index of the spunbond layer is 30-40g/10min and the melt index of the meltblown layer is 800-1200g/10min. The melt index of the spun-bonded layer is higher, the processing is easier, the melt index of the melt-blown layer is lower, the molecular weight is large, and the strength of the melt-blown layer is better.
Preferably, the preparation process of the spunbond layer comprises the following steps: mixing raw materials of the spun-bonded layer according to a specific proportion, adding the raw materials into extrusion equipment, heating the raw materials to 210-230 ℃, filtering the raw materials to a spinning box through a die head, wherein the extrusion pressure of the spinning box is 5-7Mpa, the wind pressure of cold wind is 2.5-5Kpa, the temperature is 15-25 ℃, and finally, paving and forming the raw materials, wherein the fiber dimension of the spun-bonded layer is 2-3Den. The higher extrusion pressure can better extrude the molten raw material to obtain the spun-bonded layer with lower fiber dimension, and the softness is improved.
Preferably, the preparation process of the melt-blown layer comprises the following steps: mixing the raw materials of the melt-blown layer according to a specific proportion, adding the mixture into extrusion equipment, heating the raw materials to 190-230 ℃, filtering the mixture to a spinning box through a die head, wherein the extrusion pressure of the spinning box is 1.5-3MPa, the air pressure of hot air is 40-70Kpa, the temperature is 220-250 ℃, the injection pressure is 0.05-0.1MPa, and finally, paving and molding the mixture to obtain the melt-blown layer with the fiber degree smaller than 0.5Den. The melt-blown layer has lower melt index, the extrusion pressure is not too high, and the net forming rate of the melt-blown layer is improved.
Preferably, a heating box is arranged between the first cold roller and the second cold roller, and the temperature of the heating box is 150-180 ℃. The temperature in the interval can soften the spun-bonded layer and the melt-blown layer, so that the non-woven fabric is easier to stretch, the non-woven fabric with smaller fiber dimension can be obtained, and the softness is further improved.
Further, the rotation speed of the first cold roller is 50r/min, the rotation speed of the second cold roller is 80r/min, the fiber degree of the spun-bonded layer after stretching is 1.7-1.9Den, and the fiber degree of the melt-blown layer after stretching is less than 0.25Den. Due to the speed difference between the first chill roll and the second chill roll, the fiber diameter of the spunbond layer is reduced from 2-3Den to 1.7-1.9Den, and the fiber diameter of the meltblown layer is reduced from 0.5Den to 0.25Den while the spunbond layer and the meltblown layer are elongated, further improving softness.
The hydrostatic pressure resistance depends on the quality of the melt-blown layer, and after the raw materials for manufacturing the melt-blown layer, especially the high hydrostatic pressure master batch, the metallocene catalyst and the hot melt adhesive base material are particularly added, and softening agents such as stearic acid amide and the like are not used, so that the hydrostatic pressure resistance of the melt-blown layer is improved, but the softness is reduced, and the special appearance that the side edge is relatively firm and hand-cut is realized. By using two pairs of cold rolls, and the rotation speed of the second cold roll is higher than that of the first cold roll, the non-woven fabric is stretched by the speed difference generated between the two pairs of cold rolls, so that the fiber diameters of the spun-bonded layer and the melt-blown layer are further reduced, and the non-woven fabric with high hydrostatic pressure and softness is obtained.
Comparing the inventive examples with conventional nonwoven fabric data, the comparison results are as follows:
the data detected by the invention are all carried out under the industry detection standard that the quality of the non-woven fabric is 13g, and according to the data in the table, the non-woven fabric adopting the scheme of the invention has the advantages that the hydrostatic pressure is greatly improved compared with the non-woven fabric of the industry standard, and the softness is also greatly improved compared with the non-woven fabric of the industry standard.
In summary, the foregoing description is only of the preferred embodiments of the invention, and is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (9)
1. A preparation process of a soft high hydrostatic pressure non-woven fabric is characterized by comprising the following steps: the method comprises the following steps:
(1) Preparation of the spunbond layer: mixing raw materials for preparing the spunbond layer according to a specific proportion, and carrying out melt extrusion, die head filtration, metering spinning, cold air drafting, filament splitting and lapping on the mixed raw materials to obtain the spunbond layer, wherein the raw materials for the spunbond layer comprise: polypropylene slice, soft master batch, elastomer, color master batch and modified master batch;
(2) Preparation of the meltblown layer: mixing raw materials for preparing a melt-blown layer according to a specific proportion, carrying out melt extrusion, die head filtration, hot air spinning after metering and wire-splitting lapping on the mixed raw materials to obtain the melt-blown layer, wherein the raw materials of the melt-blown layer comprise: melt-blowing special master batches and high hydrostatic pressure master batches;
(3) Preparation of nonwoven fabrics: the method comprises the steps of sequentially forming a spun-bonded layer, two melt-blown layers and a spun-bonded layer from outside to inside, carrying out hot rolling reinforcement on the four-layer structure, and obtaining a non-woven fabric with an SMMS structure through hot rolling, rolling and slitting, wherein S represents the spun-bonded layer, M represents the melt-blown layer, and the ratio of the melt-blown layer is not less than 30%;
the hot rolling and rolling are arranged in a stretching step, a first cold roller is arranged after the hot rolling, a second pair of cold rollers is arranged in front of the rolling, the stretching step is carried out through the first cold roller and clamped after the hot rolling, heating treatment is carried out, the stretching step is carried out through the second cold roller and clamped after the heating treatment, the rotation speed of the second cold roller is higher than that of the first cold roller, and the non-woven fabric is finally subjected to the first cold roller and the second cold roller with speed difference to obtain the soft high hydrostatic pressure non-woven fabric.
2. The process for preparing a soft high hydrostatic pressure nonwoven fabric according to claim 1, wherein: the raw materials of the spun-bonded layer are as follows: 70-80% of polypropylene slice, 1-3% of soft master batch, 10-15% of elastomer, 1-3% of color master batch and 8-9% of modified master batch.
3. The process for preparing a soft high hydrostatic pressure nonwoven fabric according to claim 1, wherein: the raw materials of the melt-blown layer are as follows: 90% -95% of melt-blown special master batch and 5% -10% of high hydrostatic pressure master batch.
4. A process for preparing a soft high hydrostatic pressure nonwoven fabric according to claim 3, wherein: the high hydrostatic pressure master batch comprises a metallocene catalyst and a hot melt adhesive base material.
5. The process for preparing a soft high hydrostatic pressure nonwoven fabric according to claim 1, wherein: the melt index of the spun-bonded layer is 30-40g/10min, and the melt index of the melt-blown layer is 800-1200g/10min.
6. The process for preparing a soft high hydrostatic pressure nonwoven fabric according to claim 1, wherein: the preparation process of the spun-bonded layer comprises the following steps: mixing raw materials of the spun-bonded layer according to a specific proportion, adding the raw materials into extrusion equipment, heating the raw materials to 210-230 ℃, filtering the raw materials to a spinning box through a die head, wherein the extrusion pressure of the spinning box is 5-7Mpa, the wind pressure of cold wind is 2.5-5Kpa, the temperature is 15-25 ℃, and finally, paving and forming the raw materials, wherein the fiber dimension of the spun-bonded layer is 2-3Den.
7. The process for preparing a soft high hydrostatic pressure nonwoven fabric according to claim 1, wherein: the preparation process of the melt-blown layer comprises the following steps: mixing the raw materials of the melt-blown layer according to a specific proportion, adding the mixture into extrusion equipment, heating the raw materials to 190-230 ℃, filtering the raw materials to a spinning box through a die head, wherein the extrusion pressure of the spinning box is 1.5-3MPa, the wind pressure of hot wind is 40-70Kpa, the temperature is 220-250 ℃, the spraying pressure is 0.05-0.1MPa, and finally paving and molding the mixture, wherein the fiber degree of the melt-blown layer is less than 0.5Den.
8. The process for preparing a soft high hydrostatic pressure nonwoven fabric according to any one of claims 1 to 7, wherein: a heating box is arranged between the first cold roller and the second cold roller, and the temperature of the heating box is 150-180 ℃.
9. The process for preparing a soft high hydrostatic pressure nonwoven fabric according to claim 8, wherein: the rotating speed of the first cooling roller is 50r/min, the rotating speed of the second cooling roller is 80r/min, the fiber degree of the spun-bonded layer after stretching is 1.7-1.9Den, and the fiber degree of the melt-blown layer after stretching is less than 0.25Den.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410107686.8A CN117867762A (en) | 2024-01-26 | 2024-01-26 | Preparation process of soft high hydrostatic pressure non-woven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410107686.8A CN117867762A (en) | 2024-01-26 | 2024-01-26 | Preparation process of soft high hydrostatic pressure non-woven fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117867762A true CN117867762A (en) | 2024-04-12 |
Family
ID=90588142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410107686.8A Pending CN117867762A (en) | 2024-01-26 | 2024-01-26 | Preparation process of soft high hydrostatic pressure non-woven fabric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117867762A (en) |
-
2024
- 2024-01-26 CN CN202410107686.8A patent/CN117867762A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109914034B (en) | Preparation method of electret polylactic acid melt-blown nonwoven material | |
| KR101758204B1 (en) | Twisted Composite Yarn Based Nanofibers and Method for Manufacturing the Same | |
| CN109183281B (en) | PE spun-bonded non-woven fabric and manufacturing method thereof | |
| CN111945295A (en) | Preparation method of efficient antibacterial meltblown fabric and prepared efficient antibacterial meltblown fabric | |
| CN108179550B (en) | Super-soft fluffy light filament non-woven composite material and preparation method thereof | |
| CN113293517B (en) | Polylactic acid elastic superfine fiber non-woven material and preparation method and application thereof | |
| CN105926079A (en) | Polypropylene film splitting fibers and preparation method thereof as well as air filtering material prepared from polypropylene film splitting fibers | |
| CN109208180B (en) | Smooth non-woven fabric and preparation method thereof | |
| CN1772992A (en) | Method for producing elastic non-woven cloth by spun-bonded and equipment thereof | |
| US6710134B2 (en) | Polypropylene fibres | |
| CN109385749B (en) | Ultra-soft non-woven fabric and preparation method thereof | |
| EP1041180A1 (en) | Polypropylene fibres | |
| CN112030359B (en) | Soft SMS material, preparation method and application thereof in medical hand-brushing clothes | |
| CN113103699A (en) | Soft and smooth elastic non-woven fabric and manufacturing method thereof | |
| CN111005159A (en) | Non-woven fabric applied to paper diaper core wrapping and production method thereof | |
| CN117867762A (en) | Preparation process of soft high hydrostatic pressure non-woven fabric | |
| CN110965206B (en) | Polypropylene spun-bonded non-woven fabric and preparation process thereof for improving softness of polypropylene spun-bonded non-woven fabric | |
| CN105297284B (en) | A kind of manufacture method of nonwoven needled jacquard pad | |
| CN110699860A (en) | Soft and smooth non-woven fabric and preparation method and application thereof | |
| CN110965207A (en) | Spun-bonded polypropylene non-woven fabric and preparation method thereof | |
| CN112195561A (en) | Degradable non-woven fabric and preparation method thereof | |
| CN115538039B (en) | Preparation method of soft non-woven fabric | |
| EP1126054A1 (en) | Polypropylene fibres | |
| TWI829062B (en) | Spunbond non-woven, carpet comprising the same and manufacturing method thereof | |
| CN118292279A (en) | Laminated non-woven fabric and production process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |