CN108385427A - Paper pressuring flat device - Google Patents
Paper pressuring flat device Download PDFInfo
- Publication number
- CN108385427A CN108385427A CN201810402473.2A CN201810402473A CN108385427A CN 108385427 A CN108385427 A CN 108385427A CN 201810402473 A CN201810402473 A CN 201810402473A CN 108385427 A CN108385427 A CN 108385427A
- Authority
- CN
- China
- Prior art keywords
- roller
- paper
- light
- backup pad
- annular backup
- 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
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0253—Heating or cooling the rolls; Regulating the temperature
Landscapes
- Paper (AREA)
Abstract
The present invention relates to the equipment of calendering operation in paper-making process, specially a kind of paper pressuring flat device, including rack, wind paper to be flattened puts web roll, pressurize lower roll, hot pressing upper roller, adjust the pressurization hoisting mechanism and collection winding up roller of pressurization lower roll extruding force, hot pressing upper roller includes roller, supporting rack and heated flat shot-light, roller is divided into the side wall of arcuation and the side plate of plate, side plate opens up looping pit, annular backup pad is rotatably connected in looping pit, annular backup pad is fixedly connected in rack, heated flat shot-light is fixed on annular backup pad, REFRACTIVE LIQUID is equipped in roller, heated flat shot-light is located at the top of REFRACTIVE LIQUID, the light that heated flat shot-light projects is irradiated in the tangent of pressurization lower roll and hot pressing upper roller after REFRACTIVE LIQUID reflects, annular backup pad is equipped with the gas outlet of the implementation of port and discharge gas of supplement REFRACTIVE LIQUID.The present invention provides and a kind of can be upwardly formed temperature gradient simultaneously in sheet thickness side and can synchronize the paper pressuring flat device of roll-in paper.
Description
Technical field
The present invention relates to the equipment of calendering operation in paper-making process, specially a kind of paper pressuring flat device.
Background technology
During page behaviour makes, in order to improve page surface performance, as smoothness and glossiness, and improvement paper web are horizontal
To thickness fluctuation etc., need to often calendering operation be carried out to paper.The calendering operation of paper be by applying certain pressure to paper,
So that paper is deformed in the thickness direction thereof.After pressure removes, a paper distortion part is restored, and another part will
Permanent retention.
Because paper is mainly made of plant fiber, and plant fiber is mainly by cellulose, hemicellulose and lignin three
Kind organic polymer composition, all there is glass transition temperatures under certain humidity for these components, i.e., when temperature is higher than corresponding glass
When glass temperature, paper will generate plastic deformation under the ambient pressure of very little.It can be using this characteristic of sheet components
On paper sheet thickness direction there are temperature gradient in the case of to paper carry out calendering operation so that paper surface temperature be higher than and
Internal temperature is less than the glass transition temperature of its component, to which plastic deformation only occurs in surface, to reach desired press polish effect
Paper bulk is kept under the premise of fruit as far as possible.
Patent publication No. is a kind of paper calendering device of CN104389230B, is used in a kind of device of the disclosure of the invention
Heating source of the laser as page.The invention device uses heating source of the laser as page, to entering the paper of calander nip
Page carries out surface heating so that generates ideal temperature gradient on sheet thickness direction, then makes the page after press polish thick
The concentration of plastic deformation on direction is spent on the surface of page, therefore can farthest keep the bulk for being processed page.
Above-mentioned patent there are the problem of：Laser paper heats up paper before roll-in, although laser can heat paper well
Form good temperature gradient, but it is poor to heat existence time between opportunity and roll-in opportunity, paper in roll-in temperature under
Drop, therefore the pressing effect in anticipation can not be reached.In addition although laser heating device has preferable heating properties, but sets
Standby cost is excessively high, it is difficult to large-scale application.
Invention content
The present invention provide it is a kind of can sheet thickness side be upwardly formed temperature gradient simultaneously and roll-in paper can be synchronized
Paper pressuring flat device.
The present invention provides base case：Paper pressuring flat device, including rack, wind paper to be flattened put web roll,
Pressurize lower roll, hot pressing upper roller, the pressurization hoisting mechanism and collection winding up roller for adjusting pressurization lower roll extruding force, puts web roll and is fixed on
The top of rack, pressurization hoisting mechanism include driving cylinder, promote driving member and hoisting frame, and driving cylinder, which is sequentially connected, promotes transmission
Part promotes driving member drive connection hoisting frame, and hoisting frame, which slides vertically, to be connected in rack, and pressurization lower roll is installed on hoisting frame
On, hot pressing upper roller includes roller and heated flat shot-light, and roller is divided into the side wall of arcuation and the side plate of plate, and side wall uses transparent material
Matter is made, and side plate opens up looping pit, and annular backup pad is rotatably connected in looping pit, and annular backup pad is fixedly connected on rack
On, heated flat shot-light is fixed on annular backup pad, and REFRACTIVE LIQUID is equipped in roller, and heated flat shot-light is located at the top of REFRACTIVE LIQUID,
The light that heated flat shot-light projects is irradiated in the tangent of pressurization lower roll and hot pressing upper roller, annular backup pad after REFRACTIVE LIQUID reflects
It is equipped with the gas outlet of the implementation of port and discharge gas of supplement REFRACTIVE LIQUID.
Operation principle：This programme mainly improves hot pressing upper roller on the basis of existing roller press mechanism, the refraction based on light
Principle forms the structure of similar convex lens by the roller of transparent material with the REFRACTIVE LIQUID in roller, and heated flat shot-light is projected
Light polymerize to form linear heating light.Heating light is radiated at the tangent of pressurization lower roll and hot pressing upper roller, that is,
At the roll-in of paper, make roll-in is synchronous with heating to carry out.
Compared with prior art, it is the advantages of this programme：
1. the REFRACTIVE LIQUID in roller and roller in this programme has spotlight effect, thus without using laser aid, makes
With some common heating lamps and lanterns, enables to be irradiated to paper polish by the light gathering of device and heat paper to scheduled temperature
Degree.Achieve the purpose that save equipment cost.
2. the light of this programme refraction can be directed through the position that transparent roller is irradiated to roller roll-in paper, make to add
Heat is synchronous with roll-in, is carried out at the same time roll-in paper surface fibre is vitrified, pressing effect is more preferable, makes the paper table after roll-in
Face flat smooth.
3. REFRACTIVE LIQUID not only has the effect of refraction condensation while being also equipped with accumulation of heat and controlling the effect of roller temperature, refraction
Own temperature increases during liquid refracted light, and REFRACTIVE LIQUID is always positioned at the bottom of roller under gravity, therefore rolls over
The lasting paper to lower section of liquid is penetrated to heat, refracted light can in the case where paper has certain temperature transient heating paper
, heating effect is more preferable.REFRACTIVE LIQUID can also absorb the heat of roller and avoid roller own temperature excessively high simultaneously.
Further, the side wall of the roller is glass steel material, and the side wall of roller is equipped with synchronous dead turn.Advantageous effect：
Because material is fiberglass, the sidewall friction power decline of roller is arranged synchronous dead turn and ensures in pressurization lower roll and hot pressing
Roller synchronous rolling.
Further, the REFRACTIVE LIQUID is water, and the gas outlet is communicated with steam roller, and the steam roller is installed under rack simultaneously
Positioned at paper sheet underneath.Advantageous effect：Water specific heat capacity high energy effectively controls the temperature of heating upper roller, avoids heating roll temperature mistake
Height, the steam being formed simultaneously can moisten the paper before roll-in.
Further, there is transparent convex part in the roller, the convex part is fixed on annular backup pad, described convex
Shape part offers the groove for accommodating REFRACTIVE LIQUID.Advantageous effect：It adds convex part and accommodates REFRACTIVE LIQUID, convex part is fixed on annular brace
It is not rotated together with roller on plate, it is to ensure that REFRACTIVE LIQUID liquid level will not shake that convex part, which fixes main purpose, and refraction is made to be formed
The irradiation that heating light is stablized is at roll-in.
Further, the promotion driving member is lift lever, and described lift lever one end is articulated with the telescopic rod of driving cylinder
On, the other end is articulated on hoisting frame.Advantageous effect：Lift lever can increase the lifting force of driving cylinder, and increase is contributed to carry
Rise roller pressure of the pressurization lower roll on frame to paper.
Further, roller is equipped between annular backup pad and side plate.Advantageous effect：The larger setting rolling of annular backup pad load
On the one hand column reduces friction, the service life is longer in the case of high load for another aspect roller.
Description of the drawings
Fig. 1 is the structural schematic diagram of paper pressuring flat device embodiment of the present invention.
Fig. 2 is the structural schematic diagram of Fig. 1 pressurization lower roll and hot pressing upper roller.
Specific implementation mode
Below by the further details of explanation of specific implementation mode：
Reference numeral in Figure of description includes：Rack 1 puts web roll 2, hoisting frame 31, lift lever 32, driving cylinder
33, hot pressing upper roller 400, roller 410, annular backup pad 411, heated flat shot-light 420, REFRACTIVE LIQUID 430, gas outlet 441, implementation of port
442, convex part 450, pressurization lower roll 5, collection winding up roller 6.
Embodiment is substantially as shown in Fig. 1：Paper pressuring flat device, including rack 1, wind paper to be flattened put web roll
2, pressurize lower roll 5, hot pressing upper roller 400, the pressurization hoisting mechanism and collection winding up roller 6 for adjusting pressurization 5 roller pressure of lower roll.
Rack 1 supports overall structure, puts the paper that web roll 2 places non-roll-in, and pressurization lower roll 5 coordinates hot pressing upper roller 400
Roll-in is carried out to paper, pressurization hoisting mechanism adjusts the roller pressure of pressurization lower roll 5 according to different paper, completes the paper after roll-in
It opens on collection winding up roller 6.
As shown in Figure 1, putting the top that web roll 2 is fixed on rack 1, pressurization hoisting mechanism includes driving cylinder 33, promotes biography
Moving part and hoisting frame 31, driving cylinder 33, which is sequentially connected, promotes driving member, and promotion driving member is lift lever 32, lift lever 32
One end is articulated on the telescopic rod of driving cylinder 33, and the other end is articulated on hoisting frame 31.Lift lever 32 can increase driving cylinder
33 lifting force, when hoisting frame 31 rises, the gap pressurizeed between lower roll 5 and hot pressing upper roller 400 becomes smaller, and roller pressure becomes larger.It helps
In the pressurization lower roll 5 on increase hoisting frame 31 to the roller pressure of paper.Hoisting frame 31 is slid vertically by sliding rail is connected to rack 1
On, pressurization lower roll 5 is articulated on hoisting frame 31, and pressurization lower roll 5 is equipped with transmission shaft, and transmission shaft is equipped with driving gear, drives gear
It is connected with driving motor by driving gear set.
As shown in Fig. 2, hot pressing upper roller 400 includes roller 410, supporting rack, rotation axis and heated flat shot-light 420, roller
410 by rotation axis hinge joint in rack 1.Roller 410 divides the side plate of side wall and plate for arcuation.Supporting rack one end passes through spiral shell
Bolt is fixed on roller 410, and the other end welds on the rotating shaft.
Side wall is made of fiberglass, and the side wall of roller 410 circumferentially offers annular groove, is equipped with and synchronizes in annular groove
Rubber ring, synchronous rubber ring increase the frictional force of pressurization lower roll 5 and hot pressing upper roller 400, and the two is made to rotate synchronously.
As described in Figure 2, side plate opens up looping pit, opens up fluted on the hole wall of looping pit, and groove is embedded with roller, annular
Annular backup pad 411 is rotatably connected in hole.On 411 welding stand 1 of annular backup pad.When roller 410 rotates, annular backup pad
411 will not rotate.
Heated flat shot-light 420 is fixed on annular backup pad 411, is equipped with REFRACTIVE LIQUID 430 in roller 410, in roller 410 thoroughly
Bright convex part 450, convex part 450 are fixed on annular backup pad 411, and convex part 450, which offers, accommodates the recessed of REFRACTIVE LIQUID 430
Slot；Heated flat shot-light 420 is located at the top of REFRACTIVE LIQUID 430, and the light that heated flat shot-light 420 projects is after the refraction of REFRACTIVE LIQUID 430
It is irradiated in the tangent of pressurization lower roll 5 and hot pressing upper roller 400, annular backup pad 411 is equipped with the implementation of port of supplement REFRACTIVE LIQUID 430
442 with discharge gas gas outlet 441.REFRACTIVE LIQUID 430 is water in this programme, and gas outlet 441 is communicated with steam roller, steam roller peace
Loaded on rack 1 time and it is located at paper sheet underneath.
Implementation process：As shown in Figure 1, the paper put on web roll 2 enters pressurization lower roll 5 and hot pressing upper roller by transmission
Between 400, as shown in Fig. 2, heated flat shot-light 420 projects heating light, heating light is injected in REFRACTIVE LIQUID 430, and light is by folding
It penetrates liquid 430, convex part 450, transparent roller 410 and is radiated at pressurization lower roll 5 and 400 tangency location of hot pressing upper roller, irradiation light
Focus irradiation is on paper and the axis of roller 410 is upwardly formed a light, and light irradiates vertically downwards, is radiated at paper just quilt
Hot pressing upper roller 400 carries out the position of roll-in with pressurization lower roll 5.During roll-in, pressurization lower roll 5 rotates, hot pressing upper roller 400
It rolls therewith.Because convex part 450 is fixed on annular backup pad 411, and annular backup pad 411 is fixed in rack 1, so
Convex part 450 will not be rotated with hot pressing upper roller 400 during roll-in, and the REFRACTIVE LIQUID 430 being contained in convex part 450 would not
It fluctuates, the more stable refracted light of energy provides stable heating light for paper.When REFRACTIVE LIQUID 430 is water, it can continue
Heated by light and then generate water vapour, the water vapour of generation is discharged into steam roller by gas outlet 441, gone out by steam roll row
Steam moistens paper, and the paper of moistening is more smooth after roll-in.As shown in Figure 1, paper is by under vertically disposed multipair pressurization
Wound on collection winding up roller 6 after roller 5 and 400 roll-in of hot pressing upper roller.Water in roller 410 gradually decreases during heating,
Water can be supplemented by implementation of port 442, liquid level in roller 410 is made to keep stablizing.
Above-described is only the embodiment of the present invention, and the common sense such as well known concrete structure and characteristic are not made herein in scheme
Excessive description, technical field that the present invention belongs to is all before one skilled in the art know the applying date or priority date
Ordinary technical knowledge can know the prior art all in the field, and with using routine experiment hand before the date
The ability of section, one skilled in the art can improve in conjunction with self-ability and implement under the enlightenment that the application provides
This programme, some typical known features or known method should not implement the application as one skilled in the art
Obstacle.It should be pointed out that for those skilled in the art, without departing from the structure of the invention, can also make
Go out several modifications and improvements, these should also be considered as protection scope of the present invention, these all do not interfere with the effect that the present invention is implemented
Fruit and patent practicability.The scope of protection required by this application should be based on the content of the claims, the tool in specification
The records such as body embodiment can be used for explaining the content of claim.
Claims (6)
1. paper pressuring flat device, including rack, wind paper to be flattened put web roll, pressurization lower roll, hot pressing upper roller, adjust plus
Depress the pressurization hoisting mechanism and collection winding up roller of roller extruding force, the top put web roll and be fixed on rack, the pressurization
Hoisting mechanism includes driving cylinder, promotes driving member and hoisting frame, and the driving cylinder, which is sequentially connected, promotes driving member, the promotion
Driving member drive connection hoisting frame, the hoisting frame, which slides vertically, to be connected in rack, and pressurization lower roll is installed on hoisting frame,
It is characterized in that：The hot pressing upper roller includes roller and heated flat shot-light, and the roller is divided into the side wall of arcuation and the side plate of plate,
The side wall is made of transparent material, and side plate opens up looping pit, and annular backup pad is rotatably connected in the looping pit, described
Annular backup pad is fixedly connected in rack, and the heated flat shot-light is fixed on annular backup pad, and folding is equipped in the roller
Liquid is penetrated, the heated flat shot-light is located at the top of REFRACTIVE LIQUID, and the light that the heated flat shot-light projects shines after REFRACTIVE LIQUID reflects
It penetrates in the tangent of pressurization lower roll and hot pressing upper roller, the annular backup pad is equipped with the implementation of port and discharge gas of supplement REFRACTIVE LIQUID
The gas outlet of body.
2. paper pressuring flat device according to claim 1, it is characterised in that：The side wall of the roller is glass steel material,
The side wall of roller is equipped with synchronous dead turn.
3. paper pressuring flat device according to claim 1, it is characterised in that：The REFRACTIVE LIQUID is water, and the gas outlet connects
It is connected with steam roller, the steam roller is installed under rack and is located at paper sheet underneath.
4. paper pressuring flat device according to claim 1, it is characterised in that：There is transparent convex part in the roller,
The convex part is fixed on annular backup pad, and the convex part offers the groove for accommodating REFRACTIVE LIQUID.
5. paper pressuring flat device according to claim 4, it is characterised in that：The promotion driving member is lift lever, institute
It states lift lever one end to be articulated on the telescopic rod of driving cylinder, the other end is articulated on hoisting frame.
6. paper pressuring flat device according to claim 5, it is characterised in that：Rolling is equipped between annular backup pad and side plate
Column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402473.2A CN108385427A (en) | 2018-04-28 | 2018-04-28 | Paper pressuring flat device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402473.2A CN108385427A (en) | 2018-04-28 | 2018-04-28 | Paper pressuring flat device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108385427A true CN108385427A (en) | 2018-08-10 |
Family
ID=63065232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810402473.2A Pending CN108385427A (en) | 2018-04-28 | 2018-04-28 | Paper pressuring flat device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108385427A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331617A (en) * | 2019-08-09 | 2019-10-15 | 浙江华邦特种纸业有限公司 | Aramid Paper copy paper moulding process and equipment |
| CN115230244A (en) * | 2022-05-11 | 2022-10-25 | 株洲时代华先材料科技有限公司 | Roller type hot-pressing device and hot-pressing process thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6325960B1 (en) * | 1998-07-16 | 2001-12-04 | Voith Sulzer Papiertechnik Patent Gmbh | Calender for fibrous material webs and method of operating same |
| CN1528598A (en) * | 2003-09-30 | 2004-09-15 | 伟诚实业（深圳）有限公司 | Moulded holographic picture-text positioning printing method and apparatus |
| CN101104331A (en) * | 2007-07-01 | 2008-01-16 | 佛山市顺德区容桂大信装饰材料厂 | Electromagnetic vortex induction heating type roller cylinder |
| CN202181483U (en) * | 2011-06-30 | 2012-04-04 | 德州泰鼎新材料科技有限公司 | Device for improving the calendaring effect of paper |
| CN104389230A (en) * | 2014-10-30 | 2015-03-04 | 天津科技大学 | Novel paper calendaring device |
| CN206310763U (en) * | 2016-11-11 | 2017-07-07 | 江苏桑力太阳能产业有限公司 | A kind of reflector type solar energy heat collection pipe |
| CN207210840U (en) * | 2017-09-14 | 2018-04-10 | 四川富圣纸业有限公司 | A kind of roll presses for paper industry |
-
2018
- 2018-04-28 CN CN201810402473.2A patent/CN108385427A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6325960B1 (en) * | 1998-07-16 | 2001-12-04 | Voith Sulzer Papiertechnik Patent Gmbh | Calender for fibrous material webs and method of operating same |
| CN1528598A (en) * | 2003-09-30 | 2004-09-15 | 伟诚实业（深圳）有限公司 | Moulded holographic picture-text positioning printing method and apparatus |
| CN101104331A (en) * | 2007-07-01 | 2008-01-16 | 佛山市顺德区容桂大信装饰材料厂 | Electromagnetic vortex induction heating type roller cylinder |
| CN202181483U (en) * | 2011-06-30 | 2012-04-04 | 德州泰鼎新材料科技有限公司 | Device for improving the calendaring effect of paper |
| CN104389230A (en) * | 2014-10-30 | 2015-03-04 | 天津科技大学 | Novel paper calendaring device |
| CN206310763U (en) * | 2016-11-11 | 2017-07-07 | 江苏桑力太阳能产业有限公司 | A kind of reflector type solar energy heat collection pipe |
| CN207210840U (en) * | 2017-09-14 | 2018-04-10 | 四川富圣纸业有限公司 | A kind of roll presses for paper industry |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331617A (en) * | 2019-08-09 | 2019-10-15 | 浙江华邦特种纸业有限公司 | Aramid Paper copy paper moulding process and equipment |
| CN110331617B (en) * | 2019-08-09 | 2021-10-01 | 浙江华邦特种纸业有限公司 | Paper making and forming process and equipment for aramid paper-based composite material |
| CN115230244A (en) * | 2022-05-11 | 2022-10-25 | 株洲时代华先材料科技有限公司 | Roller type hot-pressing device and hot-pressing process thereof |
| CN115230244B (en) * | 2022-05-11 | 2023-10-13 | 株洲时代华先材料科技有限公司 | Roller type hot pressing device and hot pressing process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108385427A (en) | Paper pressuring flat device | |
| CN104180320B (en) | A kind of quick rubberizing equipment and sticking method | |
| CN105398172A (en) | Anti-wrinkling laminating device for waterproof roll | |
| CN214265829U (en) | Prepreg rim charge winding and receiving device | |
| CN205481876U (en) | Light and heat spotlight thermal -arrest unit | |
| CN107299479B (en) | A kind of processing of Efficient textile is with rubbing cotton machine | |
| CN202826540U (en) | Preheater capable of automatically adjusting wrap angle | |
| CN212946889U (en) | Domestic waste breaker compression roller roll surface reinforces prosthetic devices | |
| CN214992678U (en) | Coating device for production of coated white board paper | |
| CN206781325U (en) | The smooth processing equipment of financial document | |
| CN107364623A (en) | One kind is used to produce corrugated paper surface device for labeling | |
| CN206999051U (en) | A kind of liquid crystal display maintenance film cutting apparatus | |
| CN217598063U (en) | Hot-pressing bonding device for production and processing of heat-preservation rock wool boards | |
| CN207958862U (en) | A kind of former preheating device used for paper processing of carton | |
| CN211441403U (en) | Corrugated paper heating device | |
| CN206001799U (en) | Hot air and infrared combined heating short fiber pre-drying system | |
| CN211971229U (en) | Cloth inspecting and winding device of high-cut low-loop jacquard | |
| CN208991443U (en) | A kind of liner plate recyclable device | |
| CN206953679U (en) | A kind of double-ply bag bottom hot melting and connecting device of filter bag | |
| CN112696583A (en) | Installing support for computer application technology management | |
| CN208179860U (en) | A kind of Fibreboard Production hot rolling device | |
| CN205873416U (en) | Textile processing take -up device | |
| CN209307769U (en) | Press polish lap former in a kind of paper technology | |
| CN207789978U (en) | A kind of Pyrograph machine with automatic material jacking function | |
| CN216193172U (en) | Heat seal non-woven fabrics heating device |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180810 |