CN207244341U - Biodegradable coated paper and its production equipment - Google Patents
Biodegradable coated paper and its production equipment Download PDFInfo
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- CN207244341U CN207244341U CN201721133339.4U CN201721133339U CN207244341U CN 207244341 U CN207244341 U CN 207244341U CN 201721133339 U CN201721133339 U CN 201721133339U CN 207244341 U CN207244341 U CN 207244341U
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Abstract
The utility model provides a kind of biodegradable coated paper and its production equipment, is related to coated paper technical field, solves coated paper existing in the prior art rigidly poor technical problem.The biodegradable coated paper, coating including base material and the biodegradable material being coated on the surface of the base material, the base material includes coating bearing bed and bracing reinforcement layer, the biodegradable material for being coated on a side surface of the coating bearing bed forms the coating, and the bracing reinforcement layer is arranged on another side surface of the coating bearing bed and the bracing reinforcement layer can support or reinforce the coating bearing bed.Biodegradable coated paper described in the utility model is used for container, packaging, agricultural, automobile, consumer goods etc..
Description
Technical field
Coated paper technical field is the utility model is related to, is set more particularly, to a kind of biodegradable coated paper and its production
It is standby.
Background technology
In order to make plain paper have the effect of waterproof, meeting coated water proof coating on paper, forms coated paper.Current main painting
Layer can be divided into two categories below：
1. petroleum base：Conventional plastic：PE (polyethylene), PP (polypropylene), PS (polystyrene), PC (makrolon),
PET (polyethylene terephthalate), ABS (acrylonitrile-butadiene-styrene (ABS)), PMMA (polymethyl methacrylate), Buddhist nun
Dragon etc.；
2. starch and PE mixed bases：Bio-PE (biological polyethylene) Bio-PP (biological polypropylene) Bio-PA (biological polyamides
Amine) PTT (polypropylene terephthalate).Oil machine material high comprehensive performance, is main in people's production and life
Material.
Existing market mainstream coating leaching membrane paper is mainly PE coated papers, its coating is mainly high/low density polyethylene (H/
LDPE), its material molecule structure is highly stable, it is difficult to be degraded by the light and heat of nature, about needs 200 years under conventional environment.
If accelerating its decomposition, needing the modes such as high temperature incineration (240 DEG C of ＞), it is degraded to ethene (room temperature gaseous state), while also with each
Kind deleterious oxidation product.But the production of PE coated papers and usage amount are huge in current production and life, PE synthesis high molecular materials
Using compared with difficult degradation, causing ecological environmental pollution, and pollute and expansion trend is presented after discarded.
Such pollution can be attributed to white pollution, and white pollution refers to claim one kind image of waste plastics pollution environmental phenomenon
Meaning, in particular to the high-molecular compounds such as polyethylene, polypropylene, polyvinyl chloride made of packaging bag, agricultural mulching, disposably
The plastic products such as tableware, plastic bottle become solid waste using rear thrown aside, and are thrown out without care due to arbitrarily throwing out without care, it is difficult to degradation treatment,
Irreversible pollution is caused to ecological environment and landscape.It is mainly with 1. visual pollution：In city, tourist district, water body and road
The waste plastic packing material that side is scattered brings pessimal stimulation to the vision of people, influences the overall aesthetic of city, scenic spot, destroys
The appearance of the city, scenery；2. potential hazard：Appropriation of land is excessive, pollution air, polluted-water, fire hazard, is difficult degraded, causes to grow
Phase profound level ecological environment problem.
In face of the white pollution problems of getting worse, it is desirable to find it is a kind of can substitute existing PE coatings coated paper, again
The plastic-substitute of white pollution is not caused.The biodegradable coating coating developed both at home and abroad at present mainly includes：PBAT (gathers oneself
Diacid), PCL (polycaprolactone), PHA (polyhydroxyalkanoate), PLA (polylactic acid)；That wherein more common is PLA, and PLA is
The lactic acid produced using the sugar fermentation for coming from cereal or other organic matters, lactic acid obtain linear aliphatic by polymerisation again
Polyester -- polylactic acid (PLA).The degraded of PLA is divided into two stages, and the first stage is that its ester group is progressively hydrolyzed as lactic acid
With other small molecules, then these small molecules are decomposed by the Institute of Micro-biology in environment, because degraded substep carries out, degradation speed
Slowly.PLA is often and starch blending is to strengthen its degradability and reduce cost.Some producers are also other commonly using some
Degradable polyester comes with PLA blendings；But this blended product is firmly crisp, poor plasticity, therefore also to add some plasticizer such as
Glycerine and D-sorbite make it become soft.
In addition, the base material of existing coated paper is typically all single-part stationery, poor rigidity, application range is narrow.
Utility model content
The purpose of this utility model is to provide one kind to be based on biodegradable coated paper and its production equipment, existing to solve
There is the rigidly poor technical problem of coated paper present in technology.
To achieve the above object, the utility model provides following technical scheme：A kind of biodegradable coated paper, including
The coating of base material and the biodegradable material being coated on the surface of the base material, the base material include coating bearing bed and
Bracing reinforcement layer, the biodegradable material for being coated on a side surface of the coating bearing bed form the coating, the branch
Support reinforcing layer is arranged on another side surface of the coating bearing bed and the bracing reinforcement layer can support or reinforce the coating
Bearing bed.
Preferably, the bracing reinforcement layer is corrugated paper, hollow paper or art post paperboard.
Preferably, the hollow paper includes hollow paper paper bulk, the position of the hollow paper paper bulk it is opposite two
A edge is attached on another side surface of the coating bearing bed towards the outer surface of inside edge and flanging position, described
There are hollow chamber between region and the coating bearing bed between two edges of hollow paper paper bulk.
Preferably, the corrugated paper includes corrugation base stock and corrugated facing, wherein：
The corrugation base stock is attached on another side surface of the coating bearing bed, the corrugated facing attachment
On a side surface of the corrugation base stock away from the coating bearing bed, and the corrugated facing is in accordion.
Preferably, the biodegradation material includes poly butylene succinate.
The extrusion curtain coating compounding machine (production equipment) that paper product industries are applied at present is primarily directed to characters such as PE/PLA
Particle, if directly applying the production equipment of PE/PLA types on Bio-PBS lamination coating process, due to Bio-PBS particles
With PE, PLA attribute difference, problems will be produced, such as 1. curtain coating property is bad, and lamination coating is uneven；2. temperature mismatches, modeling
Change insufficient；3. frequently phenomena such as viscous cylinder.
The utility model additionally provides a kind of production equipment, including extrusion system and compound system to solve the above-mentioned problems
System, the extrusion system can extrude the biodegradable material to the surface of the substrate paper, the hybrid system energy
Make the biodegradable material and the coating bearing bed compound by the way of pressure.
Preferably, the extrusion system includes storage device and drawing mechanism, the material outlet of the drawing mechanism and institute
The entrance connection of drawing mechanism is stated, the drawing mechanism can lead to the biodegradable material stored in the storage device
The die lip crossed on interconnected screw rod barrel, die head 26 and die head 26 is extruded to the surface of the substrate paper, the discharging
Device is internally provided with regulator and funnel valve, and strainer is equipped with the regulator.
Preferably, the hybrid system includes composite roller, and the outer surface of the composite roller has sandblasting and iron plating
Fluorine dragon.
Preferably, the production equipment further includes roll paper system and transport system, and the roll paper system includes unwinding device
And wrap-up, into web-like the coating bearing bed by the unwinding device uncoiling, and by the transport system with list
The form of layer is delivered to the extrusion system and hybrid system position for composite；By the extrusion system and hybrid system
Manufactured coated paper is sent to the wrap-up by the transport system and is wound.
Preferably, the unwinding device includes the first spool and the second spool, a spool and the second spool wherein it
One is work spool, wherein another is spare spool, the work spool and spare spool are conveyed with the coating bearing bed
System connects, and after the substrate paper on the work spool is conveyed, the substrate paper on the spare spool continues to convey.
Preferably, the production equipment further includes corona mechanism, and the corona mechanism is arranged on the unwinding device and institute
The adhesion for making the coating carrying layer surface is stated between hybrid system and can improve, the coating bearing bed passes through described defeated
System is sent to be delivered to the corona mechanism and the hybrid system successively from the unwinding device.
The biodegradable coated paper of the utility model output qualification.Because biodegradable coated paper has low-carbon ring
The good characteristics such as guarantor, ecological circulation, sustainable development, can be applied to container, packaging, agricultural, automobile, consumer goods etc., will
It is invested in domestic and international market, its is with the obvious advantage, and market potential is huge, has a extensive future, and progressively substitutes the non-degradables such as PE coatings
The coated paper of type will become a kind of inexorable trend.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the structural representation for the biodegradable coated paper that bracing reinforcement layer described in the utility model is hollow paper
Figure；
Fig. 2 is that the biology for the coating bearing bed coated on both sides that bracing reinforcement layer described in the utility model is hollow paper can drop
The structure diagram of electrolytic coating paper；
Fig. 3 is the biodegradable coated paper that bracing reinforcement layer described in the utility model is hollow paper coated on both sides
Structure diagram；
Fig. 4 is the structural representation for the biodegradable coated paper that bracing reinforcement layer described in the utility model is corrugated paper
Figure；
Fig. 5 is the biodegradable coated paper for the coated on both sides that bracing reinforcement layer described in the utility model is art post paperboard
Structure diagram；
Fig. 6 is the structure diagram of extrusion system described in the utility model；
Fig. 7 is the structure diagram of drawing mechanism described in the utility model；
Fig. 8 is the structure diagram of production equipment described in the utility model；
Fig. 9 is the structure diagram of screw rod barrel described in the utility model；
Figure 10 is the structure diagram of die head described in the utility model.
Embodiment
To make the purpose of this utility model, technical solution and advantage clearer, below by the technology of the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not before creative work is made
Obtained all other embodiment is put, belongs to the scope that the utility model is protected.
The utility model provides a kind of biodegradable coated paper, including base material and the surface for being coated on the base material
On biodegradable material coating 12, the base material includes coating bearing bed 11 and bracing reinforcement layer, is coated on the painting
The biodegradable material of one side surface of layer bearing bed 11 forms the coating 12, and the bracing reinforcement layer is arranged on described
Another side surface of the coating bearing bed 11 and bracing reinforcement layer can support or reinforce the coating bearing bed 11.
As optional embodiment, the bracing reinforcement layer is corrugated paper, hollow paper or art post paperboard.
As shown in Figure 1, the hollow paper includes hollow paper paper bulk 13, the position of the hollow paper paper bulk 13
Two opposite edges are attached to the opposite side of the coating bearing bed 11 towards the outer surface of inside edge and flanging position
On surface, there are hollow between the region and the coating bearing bed 11 between two edges of the hollow paper paper bulk 13
Chamber；As shown in Fig. 2, the outer surface of the hollow paper paper bulk 13 can be coated with the coating of the biodegradable material
12；As shown in figure 3, the outer surface of hollow paper paper bulk 13 can be attached to biodegradable described in double spread as described in Figure
The coating bearing bed 11 of the coating 12 of material.
As shown in figure 4, the corrugated paper includes corrugation base stock 14 and corrugated facing 15, wherein：The corrugation base stock 14
It is attached on another side surface of the coating bearing bed 11, the corrugated facing 15 is attached to the corrugation base stock
14 on a side surface of the coating bearing bed 11, and the corrugated facing 15 is in accordion.
As shown in figure 5, the biodegradable coated paper further includes duplex coating paper, the bilayer drawing is included by blocking in vain
For paper as base material, art post paperboard two sides are coated with the coating 12 of biodegradable material.
The characteristics of different type coated paper and the scope of application：Single coating is adapted to common monolayered vessel；Coated on both sides is adapted to hold
The larger cold drink of the device ectonexine temperature difference, ice cream container；Corrugated paper：Suitable for heat-insulated, anti-skidding, deflection is big, texture require it is high
The container of characteristic；Hollow paper：Suitable for heat-insulated, the characteristic such as texture is more demanding container；
As optional embodiment, the biodegradation material includes poly butylene succinate (abbreviation PBS).Institute
Poly butylene succinate is stated to be obtained through esterifying polycondensation by succinic acid butanedioic acid and 1.4 butanediols.
As optional embodiment, the biodegradation material further include poly butylene succinate, antioxidant and
Releasing agent, collectively forms the biodegradable material (abbreviation Bio-PBS particles).
The Bio-PBS particles include following characteristic：
1. FZ71PM is molded, degree of conforming to is more excellent, is more suitable for Asia client,
2. FZ91PM is extruded, processing stability is more excellent, is more suitable for European client
3. MZ7A0101 antioxidants, with FZ71PM meltings antioxidant effect more preferably
4. MB92AM antioxidants, with FZ91PM meltings antioxidant effect more preferably
5. MB71BM releasing agents~prevent adhesion from cooling down cylinder
6. MZ7C0201 releasing agents~prevent adhesion from cooling down cylinder
As illustrated in figures 6-10, the utility model provides a kind of production equipment, including extrusion system and hybrid system 3, institute
Stating extrusion system can extrude to the surface of the substrate paper, the hybrid system 3 by the biodegradable material and can use
The mode of pressure makes the biodegradable material and the coating bearing bed 11 compound.
As optional embodiment, the extrusion system includes storage device 7 and drawing mechanism 2, the drawing mechanism 2
Material outlet connected with the entrance of the drawing mechanism 2, the institute that the drawing mechanism 2 will can store in the storage device 7
Biodegradable material is stated to extrude to institute by the die lip 24 on interconnected screw rod barrel 25, die head 26 and die head 26
The surface of substrate paper is stated, the drawing mechanism 2 is internally provided with regulator 22 and funnel valve 23, is equipped with the regulator 22
Strainer 21.The structure of screw rod barrel 25 is suitable for Bio-PBS particle rheological behaviors；25 leading portion of screw rod barrel increases regulator
26, and funnel valve is installed on connecting passage, ensure extrusion plasticizing evenly；
Die head and die lip ensure the evenly and controllable of Bio-PBS particles extrusion.Solves conventional production equipment curtain coating property
It is bad, lamination coating is uneven, temperature mismatch, be plasticized insufficient a series of problems.
As optional embodiment, the hybrid system includes composite roller, and the outer surface of the composite roller has
Sandblasting and plating Teflon, solve the problems, such as that coating frequently glues cylinder.
As optional embodiment, the production equipment further includes roll paper system and transport system, the roll paper system
Including unwinding device 4 and wrap-up 6, into web-like the coating bearing bed 11 by 4 uncoiling of unwinding device, and pass through
The transport system is delivered to the extrusion system and the position for composite of hybrid system 3 as a single layer；By described
Leaching membrane paper is sent to the wrap-up 6 by the transport system and is wound made of extrusion system and hybrid system 3.
As optional embodiment, the unwinding device 4 includes the first spool 41 and the second spool 42, a spool
41 and second spool 42 one of them be work spool, wherein another is spare spool, the work spool and spare spool are equal
It is connected with 11 transport system of coating bearing bed, after the substrate paper on the work spool is conveyed, the spare spool
On substrate paper continue to convey.
As optional embodiment, the production equipment further includes corona mechanism 5, and the corona mechanism 5 is arranged on institute
The adhesion for making 11 surface of coating bearing bed is stated between unwinding device 4 and the hybrid system 3 and can improve, it is described
Coating bearing bed 11 is delivered to the corona mechanism 5 and described compound successively by the transport system from the unwinding device 4
System 3.
The process conditions of leaching membrane paper production：
It is as follows that lamination record technological parameter statistical form is often rolled up in embodiment in lamination process：
Bio-PBS lamination test run technological parameter statistical forms
Bio-PBS lamination test run technological parameter statistical forms
Bio-PBS lamination test run technological parameter statistical forms
Bio-PBS lamination test run technological parameter statistical forms
Bio-PBS lamination test run technological parameter statistical forms
Bio-PBS lamination test run technological parameter statistical forms
Bio-PBS lamination test runs technological parameter twists meter table
Bio-PBS lamination test run technological parameter statistical forms
Bio-PBS lamination test run technological parameter statistical forms
Bio-PBS lamination test run technological parameter statistical forms
Bio-PBS lamination test run technological parameter statistical forms
Bio-PBS lamination test run technological parameter statistical forms
Bio-PBS lamination test run technological parameter statistical forms
Finished product coated paper examines project and result
(1) appearance
1. leaching membrane layer coating is uniform, thickness is consistent, the bad phenomenon such as no film-lacking, demoulding, contracting film, layering；
2. roll web end face is smooth, without serious warpage, bumps, entire volume paper joint≤1, connector bears obvious signs；
3. roll web both sides Bio-PBS coated films：Trimming is neat, without flash, notch；
4. body paper and Bio-PBS coating composite surfaces are non-wrinkled.
(2) specification
Provide that lamination grammes per square metre deviation can refer to no more than ± 2g/ ㎡, PE coating the grammes per square metre scopes with reference to the grammes per square metre of PE coated papers
Following table standard：And biodegradable coated paper is due to composite attribute, for 230g/ ㎡ and 280 g/ ㎡ specification body paper, by processing procedure
Equipment presets coating grammes per square metre and is arranged to 20g/ ㎡, to ensure its combined strength bination, this time test-manufactures obtained biodegradable coated paper
Quantitative and peel strength testing result such as following table：
(3) (this time detection method and standard temporarily try out PE coatings for biodegradable coated paper quality standard and examining report
Paper GB relevant criterions), it, which predominantly detects index, has：1. 4. 5. banner thickness difference is 6. for thickness for quantitative 2. quantitative poor 3. quantitative difference of banner
7. 8. PBS quantifies poor 9. moisture 10. deflection to whiteness to scale error (coil diameters+breadth)SmoothnessPeel strengthAsh contentDirt countWater imbibitionSeep water on sideAppearancePeculiar smellSanitary indexPlasticiser index etc..
Coated paper (Bio-PBS) key index explanation：Quantitative fluctuation≤1g/ ㎡ and peel strength detection are (based on rational
Specimen width, length and peeling rate) result meets PE coated paper relevant criterions.
BioPBS coated papers gas permeability, infiltration experimental index (detection of third party ptt-MCC companies)：
Its ventilative standard value：Water (WVTR):ASTM E96/E96m-10 → temperature：38 DEG C/90%RH
Oxygen (OTR):ASTM D3985-05 → temperature：23 DEG C/0%RH
In summary, it is concluded that：
The key indexes such as biodegradable coated paper is quantitative, peel strength, gas permeability, seepage of water, sanitary index can expire
The detection related request of sufficient PE coated papers.
The above, is only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power
Subject to the protection domain that profit requires.
Claims (10)
1. a kind of biodegradable coated paper, it is characterised in that including base material and the life being coated on the surface of the base material
The coating (12) of Biodegradable material, the base material include coating bearing bed (11) and bracing reinforcement layer, are coated on the coating
The biodegradable material of one side surface of bearing bed (11) forms the coating (12), and the bracing reinforcement layer is arranged on described
Another side surface of coating bearing bed (11) and the bracing reinforcement layer can support or reinforce the coating bearing bed (11).
2. biodegradable coated paper according to claim 1, it is characterised in that the bracing reinforcement layer for corrugated paper,
Hollow paper or art post paperboard.
3. biodegradable coated paper according to claim 2, it is characterised in that the hollow paper includes hollow paper paper
Body (13), two opposite edges of the position of the hollow paper paper bulk (13) are towards inside edge and the appearance at flanging position
Face is attached on another side surface of the coating bearing bed (11), two edges of the hollow paper paper bulk (13)
Between region and the coating bearing bed (11) between there are hollow chamber.
4. biodegradable coated paper according to claim 2, it is characterised in that the corrugated paper includes corrugation base stock
(14) and corrugated facing (15), wherein：
The corrugation base stock (14) is attached on another side surface of the coating bearing bed (11), the corrugated facing
(15) the corrugation base stock (14) is attached on a side surface of the coating bearing bed (11), and the corrugated facing
(15) it is in accordion.
5. biodegradable coated paper according to claim 1, it is characterised in that the biodegradation material includes poly- fourth
Succinate adipate.
A kind of 6. production equipment for being used to produce any biodegradable coated papers of claim 1-5, it is characterised in that institute
Stating production equipment includes extrusion system and hybrid system (3), and the extrusion system can extrude the biodegradable material
To the substrate paper surface, the hybrid system (3) can using press by the way of make the biodegradable material with it is described
Coating bearing bed (11) is compound.
7. production equipment according to claim 6, it is characterised in that the extrusion system includes storage device (7) and goes out
Expect device (2), the material outlet of the drawing mechanism (2) is connected with the entrance of the drawing mechanism (2), the drawing mechanism
(2) biodegradable material of storage in the storage device (7) can be passed through interconnected screw rod barrel (25), mould
First 26 and die head 26 on die lip (24) extrusion be internally provided with pressure regulation to the surface of the substrate paper, the drawing mechanism (2)
Device (22) and funnel valve (23), the regulator (22) is interior to be equipped with strainer (21).
8. production equipment according to claim 7, it is characterised in that the hybrid system includes composite roller, described multiple
Closing the outer surface of roller has sandblasting and plating Teflon.
9. production equipment according to claim 8, it is characterised in that the production equipment further includes roll paper system and conveying
System, the roll paper system include unwinding device (4) and wrap-up (6), and the coating bearing bed (11) into web-like passes through
Unwinding device (4) uncoiling, and the extrusion system and compound system are delivered to by the transport system as a single layer
System (3) position for composite；Pass through the conveying by coating (12) paper made of the extrusion system and hybrid system (3)
System is sent to the wrap-up (6) and is wound.
10. production equipment according to claim 9, it is characterised in that the production equipment further includes corona mechanism (5),
The corona mechanism (5), which is arranged between the unwinding device (4) and the hybrid system (3) and can improve, makes the coating
The adhesion on bearing bed (11) surface, the coating bearing bed (11) by the transport system from the unwinding device (4) according to
It is secondary to be delivered to the corona mechanism (5) and the hybrid system (3).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721133339.4U CN207244341U (en) | 2017-09-05 | 2017-09-05 | Biodegradable coated paper and its production equipment |
| PCT/CN2017/102420 WO2019047280A1 (en) | 2017-09-05 | 2017-09-20 | Biodegradable coated paper and production device therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721133339.4U CN207244341U (en) | 2017-09-05 | 2017-09-05 | Biodegradable coated paper and its production equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207244341U true CN207244341U (en) | 2018-04-17 |
Family
ID=61885367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721133339.4U Active CN207244341U (en) | 2017-09-05 | 2017-09-05 | Biodegradable coated paper and its production equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207244341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107385993A (en) * | 2017-09-05 | 2017-11-24 | 重庆泰宝纸制品有限公司 | Biodegradable coated paper and its production equipment |
-
2017
- 2017-09-05 CN CN201721133339.4U patent/CN207244341U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107385993A (en) * | 2017-09-05 | 2017-11-24 | 重庆泰宝纸制品有限公司 | Biodegradable coated paper and its production equipment |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 400000 No. 70, Al Cheng Avenue, West Peng Town, Jiulongpo District, Chongqing, 2. Patentee after: Environmental Protection Technology Co., Ltd. Address before: 400000 No. 70, Al Cheng Avenue, West Peng Town, Jiulongpo District, Chongqing, 2. Patentee before: Chongqing Tai Bao paper products Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |