CN106994811A - A kind of equipment for producing TPU leathers - Google Patents
A kind of equipment for producing TPU leathers Download PDFInfo
- Publication number
- CN106994811A CN106994811A CN201710154456.7A CN201710154456A CN106994811A CN 106994811 A CN106994811 A CN 106994811A CN 201710154456 A CN201710154456 A CN 201710154456A CN 106994811 A CN106994811 A CN 106994811A
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- Prior art keywords
- equipment
- tpu
- press fit
- wheel
- pur
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
- B32B37/0015—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality to avoid warp or curl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
- B32B37/0053—Constructional details of laminating machines comprising rollers; Constructional features of the rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1207—Heat-activated adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/10—Removing layers, or parts of layers, mechanically or chemically
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Thermal Sciences (AREA)
- Quality & Reliability (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The present invention relates to a kind of equipment for producing TPU leathers, including：TPU discharging devices, tenslator, apparatus for coating and press fit device.The tenslator is arranged between the TPU discharging devices and the press fit device；The apparatus for coating includes heating wheel and the scraper being arranged on the heating wheel and PUR guide device, and the scraper is located at the downstream of the PUR guide device；The PUR guide device is connected with the first lift and the scraper is connected with the second lift；The press fit device is located at the downstream of the apparatus for coating.Each component of equipment of the present invention is cooperateed with mutually, and it is the TPU leathers in the range of 0.1~5.0mm that can produce thickness, and flatness is 0~0.1 μm, no curling and buckling phenomena.High yield rate is up to more than 90%, and material loss is less than 10%, and production line can foreshorten to 20 meters, saves space.
Description
Technical field
The present invention relates to processing of high molecular material technical field, more particularly to a kind of equipment for producing TPU leathers.
Background technology
Synthetic leather is the institutional framework and performance for simulating natural leather, and can be used as the compound of natural leather substitute
Material, generally simulates lamina reticularis with non-woven fabrics, and the inside layer is simulated with polyurethane coating, resulting synthetic leather positive and negative all with skin
Leather is quite similar, and with certain gas permeability, than common artificial leather closer to natural leather, is widely used in manufacture footwear, boots, case
Bag and ball etc..At present, traditional artificial leather manufacture is divided into two kinds of dry and wet, and wet method refers to material resin being mixed in water
In solution is made, then base fabric be dipped in solution roll painting, turn into artificial leather after soaking repeatedly and rolling painting drying, using this production
There is following great technical problem in technique.First, making bottom using solvent borne polyurethane wet coagulation coating, wet coagulation is applied
Layer is, by solvent borne polyurethane (PU) slurry, the surface of non-woven cloth to be coated on using coating roller, subsequently into " H2O-DMF " coagulates
Though bath, PU solidifications is formed the film with microcellular structure.DMF (dimethylformamide) is employed in this technique and does molten
Agent, process can cause DMF solvent contamination.Moreover, water can not completely replace the DMF in polyurethane, production can be caused
The DMF residue problems of product, ultimately cause product safety problem.And this product safety problem, can in numerous technology barriers and
In trade barrier, limitation product enters up-market.Second, using solvent borne polyurethane wet coagulation coating process, drying needs
Larger energy consumption is wanted, at present, the energy consumption needed for a production line is electric energy 115KW/h, 700,000 kilocalories of steam/hour.Third, adopting
With solvent borne polyurethane wet coagulation coating process, it is necessary to special DMF retracting devices, while being also required to higher energy consumption, mesh
Before, the device for just reclaiming 20 tons of DMF in a set of month is dropped in 3,500,000 yuan or so.Applied fourth, moving film using solvent borne polyurethane dry method
Layer make top layer, this technique is that solvent borne polyurethane slurry is coated on to the surface of release liners using doctor knife coater, then with
Wet method moves the non-woven cloth laminating of gel coating, is peeled off after drying, and polyurethane film is transferred into the surface that wet method moves film layer, finally
Obtain synthetic leather.Because this technique uses solvent-borne type Finish System, containing substantial amounts of toxic organic solvents, such as TOL (toluene),
MEK (butanone) and THF (tetrahydrofuran) etc..These organic solvent highly volatiles in process of production, severe contamination environment and
The healthy of site operation personnel is threatened.According to above-mentioned traditional solvent-borne type production technology, production process is existed
Serious problem of environmental pollution, is a non-clean production process.Easily occur DMF's in resulting Synthetic Leather
Residue problem, there is larger harm to human body.
So, the Synthetic Leather of development environment friendly is the trend of a certainty.At present, it is actually most of to adopt
Artificial leather is manufactured with dry method.So-called dry method artificial leather manufacture refers to polyurethane resin being applied to scrim surfaces without in solution
In roll the method for painting.But if resin to be directly coated in the surface of base fabric, the surface of finished product can because the reason for woven design without
It is smooth, influence attractive in appearance, so traditional dry method manufacture artificial leather process is that the layering of various functions resin is coated in into release liners
Surface, is then affixed in base fabric again, turns into dry method artificial leather after finally release liners are peeled off.Traditional approach produces dry method artificial leather
Machinery equipment it is very huge, common such production line is about 100 meters long, is primarily due to linear baking box, inefficient
Cross-ventilated mode of heating, respective independent blade coating, drying, the relevant device of laminating unit and release liners in itself are caused
's.And production line is oversize that operation can be caused to there are many inconvenience, it is necessary to more operating personnel.TPU in transmit process not
Occurs the phenomenon of local out-of-flatness with can avoiding.Effect of fitting is unstable, influences the obtained durability of TPU leathers, and production
It can not be found in time after being gone wrong in line, influence consecutive production, automaticity is low.Therefore need to develop a kind of high
Effect, good stability, high yield rate, the equipment that in high volume can continuously produce TPU leathers that automation is high and loss is low.
The content of the invention
In view of problems of the prior art, an object of the present invention is that offer is a kind of and produces setting for TPU leathers
It is standby, including：TPU discharging devices, tenslator, apparatus for coating and press fit device.
The tenslator is arranged between the TPU discharging devices and the press fit device；The apparatus for coating
Including heating wheel and the scraper being arranged on the heating wheel and PUR guide device, the scraper is located at the PUR
The downstream of guide device；The scraper is connected with the first lift；The PUR guide device is connected with the second lift；Institute
State the downstream that press fit device is located at the apparatus for coating.
The present invention, can be before pressing by the flatness of TPU membrane by the way that tenslator is located at into press fit device upstream
It is ready to, by the way of heating wheel replaces Convective Heating in the prior art to PUR progress heat transfer, improves heat conduction efficiency；
Scraper and PUR guide device are set, by lift adjust scraper and PUR guide device and heating wheel working face it
Between distance, each component cooperates with mutually, and it is the TPU skins in the range of 0.1~5.0mm that can produce thickness using equipment of the present invention
Leather, flatness is in 0~0.1 μ m, no curling and buckling phenomena.High yield rate is up to more than 90%, and material loss is less than
10%, production line can foreshorten to 20 meters, save space.
Deviation correcting device is provided between tenslator of the present invention and the press fit device.
Deviation correcting device draws located at can compensate equipment continuous operations between tenslator and the press fit device in time
The TPU membrane skew risen, while can solve the problem that TPU membrane caused by tenslator is offset.
Press fit device of the present invention includes stitching wheel, the stitching wheel and the heating wheel shaft to be placed in parallel and between
Leave space.
Press fit device in the present invention can be independently arranged or couple mutually with apparatus for coating, i.e., described
Press fit device includes the situation of stitching wheel and the heating wheel, and heating wheel plays applying hot melt adhesives and pressing TPU membrane and PUR
Double action, production line can foreshorten to 20 meters.
The heating wheel is connected with heat transfer unit (HTU).The present invention is not limited the specific heat transfer type of heat transfer unit (HTU).
PUR guide device of the present invention is connected with PUR and weighs control device.
Scraper can not meet requirement of all TPU leathers to thickness.When the thickness of target product is smaller, heat can be passed through
Melten gel weighs the flow that control device controls PUR, and the rotating speed of regulation heating wheel is cast on the working face of heating wheel and formed
The hot melt adhesive layer of uniform thickness, further improves the flatness of TPU leathers, can produce the TPU that thickness is 0.1~0.5mm
Leather, meets the demand of niche market.
The working face of heating wheel of the present invention is the smooth surface that flatness is 0~0.1 μm.
When the working face of heating wheel is the smooth surface that flatness is 0~0.1 μm, the use of release liners can be removed from, so that
Substantially reduce production cost, and the problem of product is unstable during in the absence of release liners change of lap.
Equipment of the present invention also includes the release paper discharging device located at apparatus for coating upstream.To the smooth of hot melt glue surface
Degree requires high TPU leathers, and equipment of the invention also can adapt to its production, now need to use release liners.On the other hand, from
Type paper is conducive to the working face for safeguarding heating wheel to prevent its irreversible damage with the working face rotation production that heating is taken turns.
Equipment of the present invention also includes the cooling forming device located at the press fit device downstream.
Present invention additionally comprises the stripping off device and product collecting device for being sequentially arranged in the cooling forming device downstream.
Destaticizing device, the Destaticizing device and pressure are provided between press fit device of the present invention and the stripping off device
Close the stripping paper contact of leather.Destaticizing device to the leather crude product after pressing destatic being conducive to the later stage to peel off,
Also the production safety hidden danger that can be reduced therefore cause.
Exemplarily, the equipment of present invention production TPU leathers includes：TPU discharging devices, tenslator, painting are arranged
Put and press fit device；Wherein, the work surface evenness for being connected with heat transfer unit (HTU) is 0~0.1 μm of heating wheel, is connected with first liter
The scraper of drop machine, the PUR guide device composition apparatus for coating for being connected with the second lift, PUR measurement controller, scraper
Located at the upstream of heating wheel；Stitching wheel and heating wheel constitute press fit device, and heating wheel upstream is provided with peeling paper discharging device, TPU
Discharging device is located at the upstream of stitching wheel, and tenslator is sequentially provided between TPU discharging devices and stitching wheel and correction is filled
Put, the downstream of press fit device is sequentially provided with cooling and shaping device, Destaticizing device, stripping off device and product collecting device, described
Destaticizing device is contacted with pressing the stripping paper of leather.
Compared with prior art, the present invention at least has the advantages that：
The present invention, can be before pressing by the flatness of TPU membrane by the way that tenslator is located at into press fit device upstream
It is ready to, by the way of heating wheel replaces Convective Heating in the prior art to PUR progress heat transfer, improves heat conduction efficiency；
Scraper and PUR guide device are set, by lift adjust scraper and PUR guide device and heating wheel working face it
Between distance, each component cooperates with mutually, and it is the TPU skins in the range of 0.1~5.0mm that can produce thickness using equipment of the present invention
Leather, flatness is in 0~0.1 μ m, no curling and buckling phenomena.High yield rate is up to more than 90%, and material loss is less than
10%, production line can foreshorten to 20 meters, save space.
Brief description of the drawings
Fig. 1 is the equipment schematic diagram of embodiment 1.
Fig. 2 is the equipment schematic diagram of embodiment 2.
Description of reference numerals
11、21：Heating wheel；12、22：TPU blowing wheels；131、132、23：Stitching wheel；141、241：Scraper；142、242：
First lift；151、251：PUR guide device；152、252：Second lift；153、253：PUR weighs control
Device；16、26：Tension controller；27：Deviation rectifier；28：Cooling and shaping wheel；29：TPU leather winding wheels；210：Peeling paper is wound
Wheel；211：Destaticizing device；212：Peeling paper blowing wheel.
The present invention is described in more detail below.But following examples is only the simple example of the present invention, not generation
Table or limitation the scope of the present invention, protection scope of the present invention are defined by claims.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
For the present invention is better described, technical scheme is readily appreciated, of the invention is typical but non-limiting
Embodiment is as follows：
Embodiment 1
A kind of equipment for producing TPU leathers, as shown in figure 1, wherein, work surface evenness for 0.05 μm heating wheel 11,
It is connected with the scraper 141 of the first lift 142, is connected with the PUR that the second lift 152, PUR weigh controller 153
Guide device 151 constitutes apparatus for coating, and stitching wheel 131 and stitching wheel 132 constitute press fit device, and TPU blowings wheel 12 is located at pressing
The upper right side of wheel 131 and stitching wheel 132, tension controller 16 is located between stitching wheel and TPU blowings wheel 12.
The flow of TPU leathers is produced using the device of embodiment 1：PUR guiding dress is adjusted by the second lift 152
151 and heating wheel the distance between 11 are put, the height for adjusting scraper 141 by the first lift 142 ensures scraper 141 and heating
Wheel the distance between 11, adjusts the rotating speed clockwise for weighing controller 153 and heating wheel 11 by PUR and controls PUR to weigh
Amount curtain coating forms the stable, hot melt adhesive film of consistency of thickness on heating wheel, at the same time, TPU membrane from TPU blowing wheels 12s,
Carried out simultaneously by the space between stitching wheel 131 and 132 to pressure, after completion pressing with hot melt adhesive film after tension controller 16
Room temperature is cooled to, TPU leathers are obtained.
It is the TPU leathers in the range of 2.0~5.0mm that the equipment of embodiment 1, which can produce thickness, and flatness is in 0-0.05 μm of model
In enclosing, no curling and buckling phenomena.Average high yield rate is up to 91%, and average material loss is less than 9%, and production line can be foreshortened to
20 meters.
Embodiment 2
A kind of equipment for producing TPU leathers, as shown in Fig. 2 wherein, heating takes turns 21, is connected with scraping for the first lift 242
Knife 241, the composition apparatus for coating of PUR guide device 251 for being connected with the second lift 252, PUR measurement controller 253,
Stitching wheel 23 and heating wheel 21 constitute press fit device, and peeling paper blowing wheel 212 is located at the upper left side of heating wheel 21, TPU blowing wheels
22 are located at the right of stitching wheel 23, and Deviation rectifier 27 and tension force are from left to right sequentially provided between stitching wheel 23 and TPU blowings wheel 22
Controller 26, the left side of heating wheel 21 is sequentially provided with cooling and shaping wheel 28, TPU leathers winding wheel 29, Destaticizing device 211 and stripping
From paper winding wheel 210.
The flow of TPU leathers is produced using the equipment of embodiment 2：PUR guiding dress is adjusted by the second lift 252
251 and heating wheel the distance between 21 are put, the height for adjusting scraper 241 by the first lift 242 ensures scraper 241 and heating
Wheel the distance between 21, peeling paper blowing wheel 212 continuously sends into peeling paper heating wheel top, and heating wheel 21 is clockwise
Rotate, peeling paper be close to heating wheel working face sequentially pass through PUR guide device 251 and heating wheel 21 between space, scrape
Knife 241 and heating wheel 21 between space, at the same time, PUR curtain coating heating wheel 21 on, by scraper for coating formed stabilization,
The hot melt adhesive film of consistency of thickness, at the same time, TPU membrane is from TPU blowing wheels 22s, after tension controller 26 and Deviation rectifier 27
The space brought into by stitching wheel 23 between heating wheel 21 and stitching wheel 23, TPU membrane and hot melt adhesive film simultaneously by stitching wheel 23 with
Heat 21 spaces of wheel to carry out to pressure, completion brings cooling and shaping into by heating wheel 21 after pressing and takes turns 28 cooling and shaping, before stripping leads to
Cross Destaticizing device 211 to destatic, peeling paper is reclaimed by peeling paper winding wheel 28 after stripping, collected by TPU leathers winding wheel 210
TPU leathers.
It is the TPU leathers in the range of 0.1~2.0mm that the equipment of embodiment 2, which can produce thickness, and flatness is at 0~0.02 μm
In the range of, no curling and buckling phenomena.Average high yield rate is up to 92%, and average material loss is less than 8%, and production line can shorten
To 20 meters.
Ask someone to state, the present invention illustrates detailed process equipment and the technological process of the present invention by above-described embodiment, but
The invention is not limited in above-mentioned detailed process equipment and technological process, that is, do not mean that the present invention has to rely on above-mentioned detailed work
Skill equipment and technological process could be implemented.Person of ordinary skill in the field is it will be clearly understood that any improvement in the present invention, right
The equivalence replacement of each raw material of product of the present invention and addition, the selection of concrete mode of auxiliary element etc., all fall within the guarantor of the present invention
Within the scope of protecting scope and being open.
Claims (10)
1. a kind of equipment for producing TPU leathers, it is characterised in that including：TPU discharging devices, tenslator, apparatus for coating
And press fit device；
The tenslator is arranged between the TPU discharging devices and the press fit device；The apparatus for coating includes
Heating wheel and the scraper being arranged on the heating wheel and PUR guide device, the scraper are arranged at the PUR and drawn
Lead the downstream of device；The scraper is connected with the first lift；The PUR guide device is connected with the second lift；It is described
Press fit device is arranged at the downstream of the apparatus for coating.
2. equipment as claimed in claim 1, it is characterised in that be provided between the tenslator and the press fit device
Deviation correcting device.
3. equipment as claimed in claim 1 or 2, it is characterised in that the press fit device includes stitching wheel, the stitching wheel with
It is described heating wheel shaft to be placed in parallel and between leave space.
4. the equipment as described in any one of claims 1 to 3, it is characterised in that the heating wheel is connected with heat transfer unit (HTU).
5. the equipment as described in any one of Claims 1 to 4, it is characterised in that the PUR guide device is connected with hot melt
Glue weighs control device.
6. the equipment as described in any one of Claims 1 to 5, it is characterised in that the working face of the heating wheel is that flatness is 0
~0.1 μm of smooth surface.
7. the equipment as described in any one of claim 1~6, it is characterised in that also including located at the release of apparatus for coating upstream
Paper discharging device.
8. the equipment as described in any one of claim 1~7, it is characterised in that also including located at the press fit device downstream
Cooling forming device.
9. equipment as claimed in claim 8, it is characterised in that the also stripping including being sequentially arranged in the cooling forming device downstream
From device and product collecting device.
10. equipment as claimed in claim 9, it is characterised in that be provided with and remove between the press fit device and the stripping off device
Electrostatic equipment, the Destaticizing device is contacted with pressing the stripping paper of leather.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710154456.7A CN106994811A (en) | 2017-03-15 | 2017-03-15 | A kind of equipment for producing TPU leathers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710154456.7A CN106994811A (en) | 2017-03-15 | 2017-03-15 | A kind of equipment for producing TPU leathers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106994811A true CN106994811A (en) | 2017-08-01 |
Family
ID=59431861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710154456.7A Pending CN106994811A (en) | 2017-03-15 | 2017-03-15 | A kind of equipment for producing TPU leathers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106994811A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141717A (en) * | 2018-08-22 | 2019-01-04 | 三众机械设备（太仓）有限公司 | Broken magnetic Real time auto measure all-in-one machine |
| CN111070740A (en) * | 2019-11-20 | 2020-04-28 | 浙江环龙新材料科技有限公司 | TPU leather composite forming device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203021838U (en) * | 2012-12-28 | 2013-06-26 | 东莞市金银丰机械实业有限公司 | Artificial leather manufacturing machine adopting novel coating method |
| CN204015225U (en) * | 2014-09-05 | 2014-12-17 | 广东梅雁吉祥水电股份有限公司 | A kind of full-automatic composite make-up machine |
-
2017
- 2017-03-15 CN CN201710154456.7A patent/CN106994811A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203021838U (en) * | 2012-12-28 | 2013-06-26 | 东莞市金银丰机械实业有限公司 | Artificial leather manufacturing machine adopting novel coating method |
| CN204015225U (en) * | 2014-09-05 | 2014-12-17 | 广东梅雁吉祥水电股份有限公司 | A kind of full-automatic composite make-up machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141717A (en) * | 2018-08-22 | 2019-01-04 | 三众机械设备（太仓）有限公司 | Broken magnetic Real time auto measure all-in-one machine |
| CN111070740A (en) * | 2019-11-20 | 2020-04-28 | 浙江环龙新材料科技有限公司 | TPU leather composite forming device |
| CN111070740B (en) * | 2019-11-20 | 2022-06-21 | 浙江环龙新材料科技有限公司 | TPU leather composite forming device |
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Application publication date: 20170801 |
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