CN203807715U - Non-woven fabric hot roll - Google Patents
Non-woven fabric hot roll Download PDFInfo
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- CN203807715U CN203807715U CN201420068698.6U CN201420068698U CN203807715U CN 203807715 U CN203807715 U CN 203807715U CN 201420068698 U CN201420068698 U CN 201420068698U CN 203807715 U CN203807715 U CN 203807715U
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- hot roll
- heat transfer
- conduction oil
- transfer zone
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Abstract
The utility model discloses a non-woven fabric hot roll. The non-woven fabric hot roll comprises a heat conduction oil inlet, a roll end cover, heat exchange areas, a roller body, a patterned sleeve, backflow branch pipes, a backflow main pipe, a heat conduction oil outlet, input branch pipes, an input main pipe, radiation fins and a heat insulating layer, wherein the heat conduction oil inlet and the heat conduction oil outlet are arranged at an axis centre of the roll end cover respectively; the heat conduction oil inlet is connected with the input main pipe located at the axis centre of the hot roll; the input main pipe is communicated with a plurality of input branch pipes; the heat exchange areas are located on the surface of the inner layer of the hot roll and are of interlayer structures; the interlayer is separated, along a direction of an axial cross section, into a plurality of heat exchange areas; at least two groups of heat exchange areas are arranged along an axial direction of the hot roll; at least three fan-shaped heat exchange areas are arranged along the axial cross section of the heat exchange areas. According to the non-woven fabric hot roll disclosed by the utility model, a flow direction and a distribution way of heat conduction oil are optimized, so that temperature control and uniform heat exchange on the surface are realized, uniform distribution of temperature on the surface of the hot roll is achieved, and quality and various processing performance indexes of non-woven fabric products during a hot rolling progress of non-woven fabric are guaranteed.
Description
Technical field
The utility model relates to a kind of polypropylene non-woven fabric manufacturing technology apparatus field, particularly a kind of nonwoven fabric hot roll.
Background technology
Hot roll is a kind ofly by certain heater means, it to be heated, so its mode by roll extrusion to converted products heat, compressing device; Mode to hot roll hot pressing heating has three kinds: Steam Heating, electrical heating and oil heating; Steam Heating is outer row's condensed water constantly, electrical heating utilizes heating wire to carry out heat treated to hot roll, and these mode of heatings are difficult to control the temperature of hot roll, makes being heated of whole piece hot roll very inhomogeneous, temperature difference loss is larger, and the larger temperature difference can affect the quality of rolling and molding.
By heat-conducting oil heating hot roll, be current conventional heating technique means, in the structure of existing conduction-oil warming hot roll, how to control the temperature of hot roll, guarantee being heated evenly property of overall thermal roll, how to reduce temperature contrast, improve the thermal efficiency, thereby improve the product quality of rolling and molding, also there are many defects, have much room for improvement.
Chinese invention patent CN103306056A, discloses a kind of hot roll, is hollow structure, along its axis cross-under, has central shaft, and hot roll body periphery is provided with oil duct, belongs to unidirectional input and output formula heat-conducting oil heating structure; Defect is: described conduction oil flows into hot roll internal layer surface from hot roll one end, within the scope of overall thermal roll circumference, conduction oil flow to the other end from one end of hot roll, in hot roll internal layer flow process, will inevitably there is heat exchange in conduction oil, so just causes conduction oil input oil temperature high, output oil temperature is low, because conduction oil bulk flow is crossed hot roll inner layer sheet face, at conduction oil itself, exist under the condition of thermograde, be to guarantee that the whole hull-skin temperature of hot roll is inhomogeneity.
Chinese invention patent CN103306058A, disclose a kind of heated roll, its axis cross-under has central shaft, is provided with inflow pipeline and flowline in central shaft, hot roll body periphery is evenly equipped with oil duct, roll body and enter, described oil duct is the passage of connecting successively with central axes; The hot roll internal layer surface of described heat-conducting oil heating, remain overall flow state, conduction oil inputs to other end output from one end on hot roll internal layer surface, the thermograde variation of heat transfer medium itself causes really controlling uniformly the temperature homogeneity of hot roll outer surface, the passage of series connection successively adopting in this invention, also can cause the heat exchange between output low temperature conduction oil and input high temperature heat conductive oil, thereby reduce overall thermal efficiency.
Chinese invention patent CN103306054A, discloses a kind of hot roll, has inner-tube structure, offers spiral runner in inner bag, and the outer surface of roller is being coated flower-pattern layer; Defect is that the adopted more above-mentioned binomial invention of one-piece auger formula runner improves to some extent, and can mix the conduction oil in inner bag, but has also caused input high temperature heat conductive oil and exported mixing of low temperature conduction oil, has reduced the thermal efficiency; Overall thermal roller rotational drives spiral runner rotating, thereby the single-way moving of conduction oil and mixing in promotion inner bag, therefore also exist along the thermograde difference on conduction oil flow direction, due to mixing and the impetus of conduction oil, must cause overall thermal roll outer surface temperature vertically to reduce; Described liner type structure is changed the heat of conduction oil and is handed over number of times minimizing, thereby also can reduce the thermal efficiency.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of nonwoven fabric hot roll, for realizing in prior art, conduction oil temperature is controlled and the defect of conducting structure, design must consider the flow direction of conduction oil, impact, the impact of backflow low temperature conduction oil, the factors such as heat exchange number of times of conduction oil of the rotation of hot roll on conduction oil motion, thereby in structural design, realized the deficiency overcoming in prior art, realized that hot roll integral body is heated evenly, temperature precise control, heat exchanger effectiveness be high.
For achieving the above object, the technical solution of the utility model is as follows: a kind of nonwoven fabric hot roll, comprise conduction oil entrance, roll end cap, heat transfer zone, roller body, decorative pattern sleeve, backflow arm, return main, conduction oil outlet, inlet branch, input supervisor, radiating fin and heat-insulation layer, it is characterized in that:
Described nonwoven fabric hot roll, adopt conduction oil to heat, in two roll end cap axle center of hot roll, be respectively arranged with conduction oil entrance and conduction oil outlet, described conduction oil entrance is connected with the input supervisor who is positioned at hot roll axle center, described input supervisor is connected with a plurality of inlet branch, described inlet branch is provided with a plurality of, corresponds respectively to the heat transfer zone entrance of each heat transfer zone; Described heat transfer zone is positioned at hot roll internal layer surface, be sandwich, described heat transfer zone, at the fixing equal width of axially having of hot roll, forms annulus interlayer, every section of described annulus interlayer is divided into a plurality of sector regions along shaft section direction, and this sector region is described heat transfer zone; Described heat transfer zone axially at least arranges two groups along hot roll, and described heat transfer zone at least arranges three fan-shaped heat transfer zone along shaft section.
Described heat transfer zone is communicated with described inlet branch, described heat transfer zone entrance is arranged on hot roll direction of rotation one end of sector, described heat transfer zone is communicated with described backflow arm, and described heat transfer zone outlet is arranged on the hot roll direction of rotation opposite end of sector.
Described heat transfer zone outlet is connected with backflow arm, described backflow arm is connected with return main, and described return main is provided with a plurality of, is symmetrically distributed in around input supervisor, described return main converges at hot roll body inner end, and communicates with conduction oil outlet.
Described conduction oil is carried through outer loop pump, and after heater heating, circulates, for hot roll provides the medium of heat exchange.Described conduction oil is through bunker, and heat temperature raising, pump housing conveying, conduction oil entrance, input supervisor, inlet branch, each heat transfer zone, backflow arm, return main, conduction oil outlet, bunker, reheat intensification, forms closed loop.
Described heat transfer zone is comprised of roll body, heat transfer zone dividing plate, inner clamps laminate, conduction oil in described heat transfer zone directly and roll body carry out heat exchange, described roll body exterior interference fit is socketed with decorative pattern sleeve, on described decorative pattern sleeve, be etched with point-like, diamond shaped, crosswise or striated decorative pattern and/or pattern, its thickness is 0.4mm--2.0mm; (preferred, thickness is 0.45mm);
Between described roller body and decorative pattern sleeve, it is interference fit;
Through reality use this hot roll to roll a size, the degree of depth substantially constant, pattern depth, angle are optional, are heated evenly, and easily control temperature.
Described conduction oil backflow arm and return main arranged outside have a plurality of radiation fin structures, for increasing the temperature of hot roll inner space, for compensating the thermal loss of hot roll inside; Conduction oil inlet branch and input supervisor's arranged outside have heat-insulation layer, guarantee that the temperature of inputting conduction oil directly sends to the heat exchange region of hot roll, thereby guarantee that hot roll internal layer heating temperature is identical.
Described heat transfer zone width is: 80---400mm; (preferred, 120mm)
The fan-shaped angle in described heat transfer zone is: 30---120 degree; (preferred, 60 degree)
Described heat transfer zone thickness is: 30---80mm; (preferred, 45mm)
Described heat transfer zone quantity is: 3---8 piece; (preferred, 6)
Described nonwoven fabric hot roll, its internal layer surface must be heated by the conduction oil of uniform temp, in other words, for the conduction oil of hot roll body internal layer surface heat exchange, must be the conduction oil that directly comes from conduction oil entrance; Guarantee that overall thermal roller surface heats up and temperature control at identical Oil Guide temperature.
The conduction oil on described nonwoven fabric hot roll internal layer surface, complete after heat exchange, must come together in conduction oil exit passageway derivation hot roll through backflow arm and return main, in derivation process, can not again carry out heat exchange with hot roll inner surface, can not with the high temperature heat conductive oil generation heat exchange of input; Guarantee that low temperature conduction oil can not affect hot roll internal layer Temperature Distribution, can not affect the temperature of conduction oil arrival end conduction oil, thereby distribute there is inhomogeneous situation in the inner layer sheet surface temperature gradient of avoiding overall thermal roll, make that overall thermal roll is inner, hot roll internal layer surface, hot roll body layer and on decorative pattern magnetic cylinder temperature control be evenly distributed consistent.
In described hot roll body, all adopt pipeline to connect, reduce as far as possible the conduction oil quantity of hot roll inside, to improve the heat exchange number of times of conduction oil, improve the thermal efficiency, heat exchange number of times at a high speed, guarantees the temperature precise control to hot roll inner surface, thereby promote, the temperature of hot roll outer surface is controlled and uniformity.
The heat transfer zone design on described hot roll internal layer surface, should meet the dynamics that hot roll rotatablely moves, guarantee that in internal layer heat exchange region, conduction oil entrance is positioned at hot roll direction of rotation, and conduction oil outlet should be positioned on the opposite direction of hot roll rotation, high-speed rotary with this through hot roll transfers the conduction oil internal flow power promoting in its internal layer heat transfer zone, improves the flow behavior in heat transfer zone.
Pass through technique scheme, the beneficial effect of technical solutions of the utility model is: by heat transfer zone, design, optimizing conduction oil flow direction, the conduction oil method of salary distribution, under the condition of conduction oil heat exchange number of times, realized the accurate control of hot roll temperature, make hot roll inner layer sheet surface temperature uniform heat exchange, make hot roll internal layer bulk temperature without gradient disparities, thereby the temperature that has realized hot roll outer body and decorative pattern sleeve surface is uniformly distributed, guarantee quality and every process performance index of nonwoven fabric course of hot rolling product.
Other alternate embodiments: the utility model also can be realized the technical solution of the utility model by the unidirectional input of hot roll and output conduction oil.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the disclosed a kind of nonwoven fabric hot roll structural representation of the utility model embodiment;
Fig. 2 is the disclosed a kind of nonwoven fabric hot roll three district's heat exchange schematic cross-sections of the utility model embodiment;
Fig. 3 is the disclosed a kind of nonwoven fabric hot roll six district's heat exchange schematic cross-sections of the utility model embodiment.
Numeral and the represented corresponding component title of letter in figure:
1. conduction oil entrance 2. roll end cap 3. heat transfer zone 4. roller bodies
5. decorative pattern sleeve 6. backflow arm 7. return main 8. conduction oil outlets
9. 11. radiating fin 12. heat-insulation layers are responsible in inlet branch 10. inputs
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
According to Fig. 1, Fig. 2 and Fig. 3, the utility model provides a kind of nonwoven fabric hot roll, comprise conduction oil entrance 1, roll end cap 2, heat transfer zone 3, roller body 4, decorative pattern sleeve 5, backflow arm 6, return main 7, conduction oil outlet 8, inlet branch 9, input supervisor 10, radiating fin 11 and heat-insulation layer 12, it is characterized in that:
Described nonwoven fabric hot roll, adopt conduction oil to heat, in two roll end cap 2 axle center of hot roll, be respectively arranged with conduction oil entrance 1 and conduction oil outlet 8, described conduction oil entrance 1 is connected with the input supervisor 10 who is positioned at hot roll axle center, described input supervisor 10 is connected with a plurality of inlet branch 9, described inlet branch 9 is provided with a plurality of, corresponds respectively to the heat transfer zone entrance of each heat transfer zone 3; Described heat transfer zone 3 is positioned at hot roll internal layer surface, be sandwich, described heat transfer zone 3, at the fixing equal width of axially having of hot roll, forms annulus interlayer, every section of described annulus interlayer is divided into a plurality of sector regions along shaft section direction, and this sector region is described heat transfer zone 3; Described heat transfer zone 3 axially at least arranges two groups along hot roll, and described heat transfer zone at least arranges three fan-shaped heat transfer zone 3 along shaft section.
Described heat transfer zone 3 is communicated with described inlet branch 9, described heat transfer zone entrance is arranged on hot roll body 4 direction of rotation one end of sector, described heat transfer zone 3 is communicated with described backflow arm 6, and described heat transfer zone 3 outlets are arranged on the hot roll direction of rotation opposite end of sector.
Described heat transfer zone outlet is communicated with backflow arm 6, described backflow arm 6 is connected with return main 7, and described return main 7 is provided with a plurality of, is symmetrically distributed in around input supervisor 10, described return main 7 converges at hot roll body 4 inner ends, and communicates with conduction oil outlet 8.
Described conduction oil is carried through outer loop pump, and after heater heating, circulates, for hot roll provides the medium of heat exchange.Described conduction oil is through bunker, and heat temperature raising, pump housing conveying, conduction oil entrance 1, input supervisor 10, inlet branch 9, each heat transfer zone 3, backflow arm 6, return main 7, conduction oil outlet 8, bunker, reheat intensification, forms closed loop.
Described heat transfer zone 3 is comprised of roll body, heat transfer zone dividing plate, inner clamps laminate, conduction oil in described heat transfer zone 3 directly and roll body 4 carry out heat exchange, the outside interference fit of described roll body 4 is socketed with decorative pattern sleeve 5, is etched with point-like, diamond shaped, crosswise or striated decorative pattern and/or pattern on described decorative pattern sleeve 5;
Preferably, the thickness of described decorative pattern is 0.45mm;
Between described roller body and decorative pattern sleeve, it is interference fit;
Described hot roll nonwoven fabric fabric width is: 1.2 meters; 2.4 rice; 3.0 rice; Non-woven fabric production line equipment corresponding to three kinds of fabric width degree.
Through reality use this hot roll to roll a size, the degree of depth substantially constant, pattern depth, angle are optional, are heated evenly, and easily control temperature.
Described conduction oil backflow arm 6 and return main 7 arranged outside have a plurality of radiating fin 11 structures, for increasing the temperature of hot roll body 4 inner spaces, for compensating the thermal loss of hot roll body 4 inside; Conduction oil inlet branch 9 and input supervisor 10 arranged outside have heat-insulation layer 12, guarantee that the temperature of inputting conduction oil directly sends to the heat exchange region of hot roll body 4, thereby guarantee that hot roll internal layer heating temperature is identical.
Preferably, described heat transfer zone 3 width are 120mm;
Preferably, the fan-shaped angle in described heat transfer zone 3 is 60 degree;
Preferably, described heat transfer zone 3 thickness are 45mm;
Preferably, described heat transfer zone quantity is 6, equal distribution.
Described nonwoven fabric hot roll, its internal layer surface must be heated by the conduction oil of uniform temp, in other words, for the conduction oil of hot roll body internal layer surface heat exchange, must be the conduction oil that directly comes from conduction oil entrance; Guarantee that overall thermal roller surface heats up and temperature control at identical Oil Guide temperature.
The conduction oil on described nonwoven fabric hot roll internal layer surface, complete after heat exchange, must come together in conduction oil through backflow arm 6 and return main 7 exports 8 passages and derives hot rolls, in derivation process, can not again carry out heat exchange with hot roll inner surface, can not with the high temperature heat conductive oil generation heat exchange of input; Guarantee that low temperature conduction oil can not affect hot roll internal layer Temperature Distribution, can not affect the temperature of conduction oil arrival end conduction oil, thereby distribute there is inhomogeneous situation in the inner layer sheet surface temperature gradient of avoiding overall thermal roll, make that overall thermal roll is inner, hot roll internal layer surface, hot roll body layer and on decorative pattern magnetic cylinder temperature control be evenly distributed consistent.
In described hot roll body 4, all adopt pipeline to connect, reduce as far as possible the conduction oil quantity of hot roll inside, to improve the heat exchange number of times of conduction oil, improve the thermal efficiency, heat exchange number of times at a high speed, guarantees the temperature precise control to hot roll inner surface, thereby promote, the temperature of hot roll outer surface is controlled and uniformity.
Heat transfer zone 3 designs on described hot roll internal layer surface, should meet the dynamics that hot roll rotatablely moves, guarantee that in internal layer heat exchange region, heat transfer zone entrance is positioned at hot roll direction of rotation, and heat transfer zone outlet should be positioned on the opposite direction of hot roll rotation, high-speed rotary with this through hot roll transfers the conduction oil internal flow power promoting in its internal layer heat transfer zone, improves the flow behavior in heat transfer zone.
By above-mentioned specific embodiments, the beneficial effects of the utility model are: by heat transfer zone, design, optimizing conduction oil flow direction, the conduction oil method of salary distribution, under the condition of conduction oil heat exchange number of times, realized the accurate control of hot roll temperature, make hot roll inner layer sheet surface temperature uniform heat exchange, make hot roll internal layer bulk temperature without gradient disparities, thereby the temperature that has realized hot roll outer body and decorative pattern sleeve surface is uniformly distributed, guarantee quality and every process performance index of nonwoven fabric course of hot rolling product.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. a nonwoven fabric hot roll, is characterized in that, comprises conduction oil entrance, roll end cap, heat transfer zone, roller body, decorative pattern sleeve, backflow arm, return main, conduction oil outlet, inlet branch, input supervisor, radiating fin and heat-insulation layer; Described nonwoven fabric hot roll, adopt conduction oil to heat, in two roll end cap axle center of hot roll, be respectively arranged with conduction oil entrance and conduction oil outlet, described conduction oil entrance is connected with the input supervisor who is positioned at hot roll axle center, described input supervisor is connected with a plurality of inlet branch, described inlet branch is provided with a plurality of, corresponds respectively to the heat transfer zone entrance of each heat transfer zone; Described heat transfer zone is positioned at hot roll internal layer surface, be sandwich, described heat transfer zone, at the fixing equal width of axially having of hot roll, forms annulus interlayer, every section of described annulus interlayer is divided into a plurality of sector regions along shaft section direction, and this sector region is described heat transfer zone; Described heat transfer zone axially at least arranges two groups along hot roll, and described heat transfer zone at least arranges three fan-shaped heat transfer zone along shaft section.
2. a kind of nonwoven fabric hot roll according to claim 1, it is characterized in that, described heat transfer zone is communicated with described inlet branch, described heat transfer zone entrance is arranged on hot roll direction of rotation one end of sector, described heat transfer zone is communicated with described backflow arm, and described heat transfer zone outlet is arranged on the hot roll direction of rotation opposite end of sector.
3. a kind of nonwoven fabric hot roll according to claim 1, it is characterized in that, described heat transfer zone outlet is connected with backflow arm, described backflow arm is connected with return main, described return main is provided with a plurality of, be symmetrically distributed in around input supervisor, described return main converges at hot roll body inner end, and communicates with conduction oil outlet.
4. a kind of nonwoven fabric hot roll according to claim 1, is characterized in that, described conduction oil backflow arm and return main arranged outside have a plurality of radiation fin structures; Conduction oil inlet branch and input supervisor arranged outside have heat-insulation layer.
5. a kind of nonwoven fabric hot roll according to claim 1, is characterized in that, described heat transfer zone width is: 80mm-400mm; The fan-shaped angle in described heat transfer zone is: 30-120 degree; Described heat transfer zone thickness is: 30mm-80mm; Described heat transfer zone quantity is: 3-8 piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068698.6U CN203807715U (en) | 2014-02-18 | 2014-02-18 | Non-woven fabric hot roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068698.6U CN203807715U (en) | 2014-02-18 | 2014-02-18 | Non-woven fabric hot roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203807715U true CN203807715U (en) | 2014-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420068698.6U Expired - Fee Related CN203807715U (en) | 2014-02-18 | 2014-02-18 | Non-woven fabric hot roll |
Country Status (1)
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| CN (1) | CN203807715U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104290439A (en) * | 2014-10-08 | 2015-01-21 | 山东泰鹏环保材料股份有限公司 | Quick changing system of rolling mill and application method of quick changing system |
| CN105568415A (en) * | 2014-11-11 | 2016-05-11 | 江苏威腾人造草坪有限公司 | Traction hot roller used for lawn signal-wire drawing machine |
| WO2016095357A1 (en) * | 2014-12-20 | 2016-06-23 | 江苏鹰游纺机有限公司 | Novel safe maintenance-free oil heating roller body |
| CN109652942A (en) * | 2017-10-12 | 2019-04-19 | 天津圣奥无纺布有限公司 | A kind of non-woven fabrics hot roll |
| CN111663245A (en) * | 2020-06-21 | 2020-09-15 | 何杰 | Non-woven fabric hot roll with heat uniform distribution mechanism |
| CN113427879A (en) * | 2021-06-22 | 2021-09-24 | 宜兴市伟业印染有限公司 | Breathable anti-static super-soft cloth production process and production device thereof |
-
2014
- 2014-02-18 CN CN201420068698.6U patent/CN203807715U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104290439A (en) * | 2014-10-08 | 2015-01-21 | 山东泰鹏环保材料股份有限公司 | Quick changing system of rolling mill and application method of quick changing system |
| CN105568415A (en) * | 2014-11-11 | 2016-05-11 | 江苏威腾人造草坪有限公司 | Traction hot roller used for lawn signal-wire drawing machine |
| WO2016095357A1 (en) * | 2014-12-20 | 2016-06-23 | 江苏鹰游纺机有限公司 | Novel safe maintenance-free oil heating roller body |
| CN109652942A (en) * | 2017-10-12 | 2019-04-19 | 天津圣奥无纺布有限公司 | A kind of non-woven fabrics hot roll |
| CN111663245A (en) * | 2020-06-21 | 2020-09-15 | 何杰 | Non-woven fabric hot roll with heat uniform distribution mechanism |
| CN113427879A (en) * | 2021-06-22 | 2021-09-24 | 宜兴市伟业印染有限公司 | Breathable anti-static super-soft cloth production process and production device thereof |
| CN113427879B (en) * | 2021-06-22 | 2023-01-31 | 宜兴市伟业印染有限公司 | Production process and production device of breathable anti-static ultra-soft cloth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20170218 |