AU2020100286A4 - Biodegradable coated paper and device for producing same - Google Patents
Biodegradable coated paper and device for producing same Download PDFInfo
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- AU2020100286A4 AU2020100286A4 AU2020100286A AU2020100286A AU2020100286A4 AU 2020100286 A4 AU2020100286 A4 AU 2020100286A4 AU 2020100286 A AU2020100286 A AU 2020100286A AU 2020100286 A AU2020100286 A AU 2020100286A AU 2020100286 A4 AU2020100286 A4 AU 2020100286A4
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- 238000000576 coating method Methods 0.000 claims abstract description 180
- 239000011248 coating agent Substances 0.000 claims abstract description 172
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 16
- 239000000123 paper Substances 0.000 claims description 140
- 239000010410 layer Substances 0.000 claims description 67
- 150000001875 compounds Chemical class 0.000 claims description 33
- 238000007599 discharging Methods 0.000 claims description 16
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- 230000007246 mechanism Effects 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 9
- -1 polybutylene succinate Polymers 0.000 claims description 7
- 229920002961 polybutylene succinate Polymers 0.000 claims description 7
- 239000004631 polybutylene succinate Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
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- 239000002356 single layer Substances 0.000 claims description 5
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- 238000004806 packaging method and process Methods 0.000 abstract description 3
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- 239000004626 polylactic acid Substances 0.000 description 9
- 229920003023 plastic Polymers 0.000 description 8
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- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
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- 150000003384 small molecules Chemical class 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 208000034530 PLAA-associated neurodevelopmental disease Diseases 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
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- 238000003915 air pollution Methods 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Laminated Bodies (AREA)
- Paper (AREA)
Abstract
The present invention provides biodegradable coated paper and a device for producing same, relates to the technical field of coated paper, and solves the technical problem of poor 5 rigidity of coated paper in the prior art. The biodegradable coated paper includes a substrate and a biodegradable material coating that coats the surface of the substrate, where the substrate includes a coating bearing layer and a supporting and reinforcing layer; the biodegradable material coating the surface of one side of the coating bearing layer forms the coating, and the supporting and reinforcing layer is disposed on the surface of the other side of the coating 10 bearing layer and can support or reinforce the coating bearing layer. The biodegradable coated paper according to the present invention is used in terms of containers, packaging, agriculture, automobiles, consumer goods and the like.
Description
BIODEGRADABLE COATED PAPER AND DEVICE FOR PRODUCING SAME
2020100286 26 Feb 2020
TECHNICAL FIELD [0001] The present invention relates to the technical field of coated paper, and in particular, to biodegradable coated paper and a device for producing the same.
BACKGROUD [0002] In order to make ordinary paper waterproof, a waterproof coating is applied to the paper to form coated paper. Currently, the main coatings can be divided into the following two categories:
[0003] © Petroleum-based: conventional plastics: polyethylene (PE), polypropylene (PP), polystyrene (PS), polycarbonate (PC), polyethylene terephthalate (PET), acrylonitrile-butadiene-styrene (ABS), polymethyl methacrylate (PMMA), nylon, and the like.
[0004] ® Mixed base of starch and PE: bio-PE, bio-PP, bio-polyamide (bio-PA), and polytrimethylene terephthalate (PTT). Petroleum-based materials have excellent comprehensive properties and are main materials in people's production and life.
[0005] At present, the mainstream coated paper in the market is mainly PE coated paper, and its coating is mainly made of high/low density polyethylene (H/LDPE). Its molecular structure is very stable, and it is difficult to be degraded by light and heat in nature. It takes about 200 years in the conventional environment to degrade the material. If its decomposition is accelerated, it needs high-temperature incineration (at a temperature greater than 240°C) and other methods to degrade the material into ethylene (normal temperature gaseous state), and at the same time it is accompanied by various harmful oxidation products. However, the production and use of the PE coated paper are huge in current production and life. PE synthetic polymer materials are difficult to degrade after being used and discarded, causing ecological environmental pollution, and the pollution shows an expanding trend.
[0006] This kind of pollution can be attributed to white pollution. White pollution refers to a vivid appellation of environmental pollution caused by waste plastics. Specifically, it refers to plastic products such as packaging bags made of PE, PP, polyvinyl chloride and other polymer compounds, agricultural mulching films, disposable tableware, plastic bottles that are discarded as solid waste after use. Due to random littering, it is difficult to degrade and treat, causing irreversible pollution to the ecological environment and landscape. The waste plastics mainly cause the following subsequences: Φ visual pollution: waste plastic packages scattered around cities, tourist areas, water bodies and roads bring bad stimulation to people's vision, affecting i
2020100286 26 Feb 2020 the overall attractiveness of cities and scenic spots, and destroying the city appearance and scenery; ® potential hazards: the waste plastics cause excessive land occupation, air pollution, water body pollution and fire hazards and are difficult to degrade, resulting in long-term deep-seated ecological environmental problems.
[0007] Facing the increasingly serious problem of white pollution, people hope to find a plastic substitute that can replace the current PE coated paper without causing white pollution. At present, degradable coatings developed at home and abroad mainly include: poly(butyleneadipate-co-terephthalate) (PBAT), polycaprolactone (PCL), polyhydroxyalkanoate (PHA), and polylactic acid (PLA), where PLA is more commonly used. PLA is linear aliphatic polyester-PLA obtained through polymerization of lactic acid generated by fermentable sugar from grains or other organic matters. The degradation of PLA is divided into two stages. The first stage is that its ester groups are gradually hydrolyzed into lactic acid and other small molecules, and then these small molecules are decomposed by microorganisms in the environment. Since the degradation is performed step by step, the degradation speed is slow. PLA is often blended with starch to enhance its degradability and reduce costs. Some producers also often use other degradable polyesters for blending with PLA. However, this blended product is hard and brittle and has poor plasticity. As a result, some plasticizers such as glycerol and sorbitol should be added to make it softer.
[0008] In addition, a substrate of the existing coated paper is generally single-layer paper, which has poor rigidity and narrow application range.
SUMMARY [0009] The present invention provides biodegradable coated paper and a device for producing the same to solve the technical problem of poor rigidity of coated paper in the prior art.
[0010] In order to achieve the foregoing objective, the present invention provides the following technical solution: a biodegradable coated paper, including a substrate and a biodegradable material coating that coats the surface of the substrate, where the substrate includes a coating bearing layer and a supporting and reinforcing layer; the biodegradable material coating the surface of one side of the coating bearing layer forms the coating, and the supporting and reinforcing layer is disposed on the surface of the other side of the coating bearing layer and can support or reinforce the coating bearing layer.
[0011] Preferably, the supporting and reinforcing layer is cormgated paper, hollow paper or a white cardboard.
[0012] Preferably, the hollow paper includes a hollow paper body, two opposite edges of the
2020100286 26 Feb 2020 hollow paper body are folded inwards, outer surfaces of the folded edge parts are attached to the surface of the other side of the coating bearing layer, and a hollow chamber exists between an area between the two edges of the hollow paper body and the coating bearing layer.
[0013] Preferably, the cormgated paper includes cormgated bottom paper and a cormgated paper outer layer, where [0014] the cormgated bottom paper is attached to the surface of the other side of the coating bearing layer, the cormgated paper outer layer is attached to the surface of one side of the cormgated bottom paper facing away from the coating bearing layer, and the cormgated paper outer layer is in a folded shape.
[0015] Preferably, the biodegradable material includes polybutylene succinate.
[0016] At present, an extmsion casting compound machine (coating machine) used in the paper product industry is mainly aimed at PE/PLA and other characteristic particles. If PE/PLA type coating machines are directly applied to a Bio-PBS coating process, many problems arise due to the difference of properties between Bio-PBS particles and PE and PLA, such as Φ poor casting property and uneven laminated coating; © temperature mismatch and insufficient plasticization; © frequent cylinder sticking and other phenomena.
[0017] In order to solve the foregoing problems, the present invention further provides a coating machine, which includes an extmsion system and a pressing system, where the extmsion system can extmde the biodegradable material to the surface of the substrate paper the pressing system can compound the biodegradable material with the coating bearing layer in a pressing manner.
[0018] Preferably, the extmsion system includes a storage device and a discharging device, where a material outlet of the discharging device is communicated with an inlet of the discharging device; the discharging device can extmde the biodegradable material stored in the storage device to the surface of the substrate paper through a screw barrel, a die head 26 and a die lip on the die head 26 which are mutually communicated with each other; a pressure regulating device and a funnel valve are disposed in the discharging device; and a filter screen is disposed in the pressure regulating device.
[0019] Preferably, a compound system includes a composite roller, and the outer surface of the composite roller is provided with sandblasted and electroplated teflon.
[0020] Preferably, the coating machine further includes a roll paper system and a conveying system, where the roll paper system includes an unwinding device and a winding device; the rolled coating bearing layer is unwound by the unwinding device and conveyed to a position where the extmsion system and the compound system are compounded in a single layer form by
2020100286 26 Feb 2020 the conveying system; and the coating paper made by the extrusion system and the compound system is sent through the conveying system to the winding device for winding.
[0021] Preferably, the unwinding device includes a first reel and a second reel, where one of the first reel and the second reel is a working reel and the other is a standby reel, the working reel and the standby reel are both connected to the conveying system of the coating bearing layer, and substrate paper on the standby reel continues to be conveyed after substrate paper on the working reel is conveyed.
[0022] Preferably, the coating machine further includes a corona mechanism, where the corona mechanism is disposed between the unwinding device and the compound system and can improve the adhesion of the surface of the coating bearing layer, and the coating bearing layer is sequentially conveyed from the unwinding device to the corona mechanism and the compound system through the conveying system.
[0023] According to the present invention, the qualified biodegradable coated paper is produced. Because the biodegradable coated paper has excellent characteristics of low carbon, environmental protection, ecological circulation, sustainable development, etc., it can be applied to containers, packaging, agriculture, automobiles, consumer goods, etc. When put into domestic and foreign markets, the biodegradable coated paper has obvious advantages, huge market potential and broad prospect. It becomes an inevitable trend to gradually replace non-degradable coated paper such as coated paper with a PE coating.
BRIEF DESCRIPTION OF THE DRAWINGS [0024] To describe the technical solutions in the embodiments of the present invention or in the prior art more clearly, the following briefly describes the accompanying drawings required for describing the embodiments or the prior art. Apparently, the accompanying drawings in the following description show some embodiments of the present invention, and a person of ordinary skill in the art may still derive other accompanying drawings from these accompanying drawings without creative efforts.
[0025] FIG. 1 is a schematic structural diagram of biodegradable coated paper in which a supporting and reinforcing layer is hollow paper according to the present invention;
[0026] FIG. 2 is a schematic structural diagram of biodegradable coated paper in which a supporting and reinforcing layer is hollow paper and both sides of a coating bearing layer have coatings according to the present invention;
[0027] FIG. 3 is a schematic structural diagram of biodegradable coated paper which has double-sided coatings and a supporting and reinforcing layer being hollow paper according to
2020100286 26 Feb 2020 the present invention;
[0028] FIG. 4 is a schematic structural diagram of biodegradable coated paper in which a supporting and reinforcing layer is corrugated paper according to the present invention;
[0029] FIG. 5 is a schematic structural diagram of biodegradable coated paper which has double-sided coatings and a supporting and reinforcing layer being a white cardboard according to the present invention;
[0030] FIG. 6 is a schematic structural view of an extrusion system according to the present invention;
[0031] FIG. 7 is a schematic structural view of a discharging device according to the present invention;
[0032] FIG. 8 is a schematic structural view of a coating machine according to the present invention;
[0033] FIG. 9 is a schematic structural view of a screw barrel according to the present invention; and [0034] FIG. 10 is a schematic structural view of a die head according to the present invention.
DESCRIPTION OF THE EMBODIMENTS [0035] In order to make the objective, technical solution and advantages of the present invention clearer, the following describes the technical solution of the present invention in detail. Apparently, the described embodiments are merely some rather than all of the embodiments of the present invention. All other implementations obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0036] The present invention provides biodegradable coated paper, including a substrate and a biodegradable material coating 12 that coats the surface of the substrate, where the substrate includes a coating bearing layer 11 and a supporting and reinforcing layer; the biodegradable material coating the surface of one side of the coating bearing layer 11 forms the coating 12, and the supporting and reinforcing layer is disposed on the surface of the other side of the coating bearing layer 11 and can support or reinforce the coating bearing layer 11.
[0037] Optionally, the supporting and reinforcing layer is corrugated paper, hollow paper or a white cardboard.
[0038] As shown in FIG. 1, the hollow paper includes a hollow paper body 13, two opposite edges of the hollow paper body 13 are folded inwards, outer surfaces of the folded edge parts are attached to the surface of the other side of the coating bearing layer 11, and a hollow
2020100286 26 Feb 2020 chamber exists between an area between the two edges of the hollow paper body 13 and the coating bearing layer 11. As shown in FIG. 2, the outer surface of the hollow paper body 13 can be coated with the biodegradable material coating 12. As shown in FIG. 3, the outer surface of the hollow paper body 13 can be attached to the coating bearing layer 11 with both sides coated with the biodegradable material coating 12.
[0039] As shown in FIG. 4, the corrugated paper includes corrugated bottom paper 14 and a cormgated paper outer layer 15, where the corrugated bottom paper 14 is attached to the surface of the other side of the coating bearing layer 11, the corrugated paper outer layer 15 is attached to the surface of one side of the cormgated bottom paper 14 facing away from the coating bearing layer 11, and the cormgated paper outer layer 15 is in a folded shape.
[0040] As shown in FIG. 5, the biodegradable coated paper further includes double-layer coated paper, and the double-layer coated paper includes a white cardboard which is used as a substrate. Both sides of the white cardboard are coated with the biodegradable material coating 12.
[0041] Characteristics and application scopes of different types of coated paper: a single coating is suitable for common single-layer containers; double-sided coatings are suitable for cold beverage and ice cream containers with a large temperature difference between an inner layer and an outer layer of the container; corrugated paper: the corrugated paper is suitable for containers with characteristics of thermal insulation, skid resistance, high stiffness, high texture requirements, and the like; and hollow paper: the hollow paper is suitable for containers with characteristics of thermal insulation, high texture requirements, and the like.
[0042] Optionally, the biodegradable material includes polybutylene succinate (PBS). The PBS is obtained by esterification and polycondensation of succinic acid and 1,4-butanediol.
[0043] Optionally, the biodegradable material further includes PBS, an antioxidant and a release agent, which commonly form the biodegradable material (bio-PBS particles for short).
[0044] The bio-PBS particles have the following characteristics:
[0045] Φ FZ71PM injection molding has better adhesion and is more suitable for Asian customers.
[0046] ® FZ91PM extrusion has better machining stability and is more suitable for European customers.
[0047] ® An MZ7A0101 antioxidant has better oxidation resistance by melting with FZ71PM.
[0048] ® An MB92AM antioxidant has better oxidation resistance by melting with FZ91PM.
[0049] © An MB71BM release agent prevents sticking of a cooling cylinder.
2020100286 26 Feb 2020 [0050] © An MZ7C0201 release agent prevents sticking of a cooling cylinder.
[0051] As shown in FIGs. 6 to 10, the present invention provides a coating machine, which includes an extrusion system and a pressing system 3, where the extrusion system can extrude the biodegradable material to the surface of the substrate paper the pressing system 3 can compound the biodegradable material with the coating bearing layer 11 in a pressing manner.
[0052] Optionally, the extrusion system includes a storage device 7 and a discharging device 2, where a material outlet of the discharging device 2 is communicated with an inlet of the discharging device 2; the discharging device 2 can extrude the biodegradable material stored in the storage device 7 to the surface of the substrate paper through a screw barrel 25, a die head 26 and a die lip 24 on the die head 26 which are mutually communicated with each other; a pressure regulating device 22 and a funnel valve 23 are disposed in the discharging device 2; and a filter screen 21 is disposed in the pressure regulating device 22. The structure of the screw barrel 25 is suitable for rheological characteristics of Bio-PBS particles. The pressure regulating device 26 is added at a front section of the screw barrel 25, and the funnel valve is mounted on a connecting flow passage to ensure more uniform extrusion plasticization effect.
[0053] The die head and the die lip ensure that extrusion of the bio-PBS particles is more uniform and controllable. A series of problems of poor casting property, uneven coating, unmatched temperature and insufficient plasticization of a conventional coating machine are solved.
[0054] Optionally, a compound system includes a composite roller 3, and the outer surface of the composite roller 3 is provided with sandblasted and electroplated teflon, which solves the problem of frequent cylinder sticking by the coating.
[0055] Optionally, the coating machine further includes a roll paper system and a conveying system, where the roll paper system includes an unwinding device 4 and a winding device 6; the rolled coating bearing layer 11 is unwound by the unwinding device 4 and conveyed to a position where the extrusion system and the compound system 3 are compounded in a single layer form by the conveying system; and the coating paper made by the extrusion system and the compound system 3 is sent through the conveying system to the winding device 6 for winding.
[0056] Optionally, the unwinding device 4 includes a first reel 41 and a second reel 42, where one of the first reel 41 and the second reel 42 is a working reel and the other is a standby reel, the working reel and the standby reel are both connected to the conveying system of the coating bearing layer 11, and substrate paper on the standby reel continues to be conveyed after substrate paper on the working reel is conveyed.
2020100286 26 Feb 2020 [0057] Optionally, the coating machine further includes a corona mechanism 5, where the corona mechanism 5 is disposed between the unwinding device 4 and the compound system 3 and can improve the adhesion of the surface of the coating bearing layer 11, and the coating bearing layer 11 is sequentially conveyed from the unwinding device 4 to the corona mechanism 5 and the compound system 3 through the conveying system.
[0058] Technological conditions of production of coated paper [0059] In an embodiment, the statistical table of process parameters recorded for each roll of coating during the coating process is as follows:
[0060] Statistical table of process parameters for Bio-PBS coating machine trial run
| P r 0 c e s s | Date: July 17, 2017, 15:00 | Type of coating: single side coating | Batch: Roll 1 | |||||||
| C 0 at i n g | Resin used | FZ71PM:FZ91PM | Additive | MZ7A010EMZ7C0 201 | Ratio | 75:25:2: 1 | ||||
| Gram weight of paper | 280 | Gram weight of coating | 16-20 | Production speed | 90 | |||||
| Screw machinin g temperat ure | Cl | C2 | C3 | C 4 | C5 | Con necti on | Mesh replac ement | Die neck | Cooling water temperature (°C) | 18.5 |
| 16 0 | 19 0 | 21 0 | 23 0 | 230 | 225 | 225 | 225 | |||
| Die lip machinin g temperat ure | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 4.9 |
| 22 5 | 22 5 | 22 5 | 22 5 | 225 | 225 | 225 | 260/5 V | |||
| Resin pressure (MPa) | Bef ore the me sh | 6.1 | Resin temperat ure | Bef ore the mes h | 219 | Corona output power (kw.h) | Electr ode 1 | 3.91 | ||
| Aft er the me sh | 1.2 | Aft er the mes h | 187 | Electr ode 2 | 3.31 | |||||
| Improve ment measures | The synchronous speed ratio of an extruder rises to 80. | |||||||||
| Trial run | The synchronous speed ratio of the extruder is before adjustment, and the actual |
2020100286 26 Feb 2020 conclusi ons gram weight is detected under a set gram weight of 20 g:
It is 16.3 g for zone 1, 15.3 g for zone 2, 15.9 g for zone 3, and 15.6 g for zone 4.
An inner roll is about 16 g, and an outer roll is about 20 g.
Coating length L = 2270 m [0061] Statistical table of process parameters for Bio-PBS coating machine trial run
| P r 0 c e s s | Date: July 17, 2017, 17:30 | Type of coating: single side coating | Batch: Roll 2 | |||||||
| C 0 at i n g | Resin used | FZ71PM:FZ91PM | Additive | MZ7A010EMZ7C0 201 | Ratio | 75:25: 2:1 | ||||
| Gram weight of paper | 280 | Gram weight of coating | 20 | Production speed | 96 | |||||
| Screw machini ng tempera ture | Cl | C2 | C3 | C 4 | C5 | Con necti on | Mesh replac ement | Die neck | Cooling water temperature (°C) | 18.5 |
| 160 | 19 0 | 21 0 | 23 0 | 230 | 225 | 225 | 225 | |||
| Die lip machini ng tempera ture | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 5 |
| 223 | 22 3 | 22 5 | 22 5 | 225 | 225 | 225 | 260/5 V | |||
| Resin pressure (MPa) | Befo re the mes h | 7.2 | Resin temperat ure | Bef ore the mes h | 218. 2 | Corona output power (kw.h) | Electr ode 1 | 3.85 | ||
| Afte r the mes h | 1.4 | Aft er the mes h | 188 | Electr ode 2 | 3.55 | |||||
| Improv ement measure s | The synchronous speed ratio of the extruder rises to 80, and the set gram weight is 20 g. | |||||||||
| Trial run conclusi ons | The coating length L is approximately equal to 1900 m. |
[0062] Statistical table of process parameters for Bio-PBS coating machine trial run
2020100286 26 Feb 2020
| P r 0 c e s s | Date: July 17, 2017, 18:00 | Type of coating: double side coating | Batch: Roll 3 | |||||||
| C 0 at i n g | Resin used | FZ71PM:FZ91PM | Additive | MZ7A010EMZ7C0 201 | Ratio | ® 50:50:2: 1 ® 50:50:2: 2 | ||||
| Gram weight of paper | 280 | Gram weight of coating | 20+20 | Production speed | 85 | |||||
| Screw machinin g temperat ure | Cl | C2 | C3 | C 4 | C5 | Con necti on | Mesh replac ement | Die neck | Cooling water temperature (°C) | 18.8 |
| 16 0 | 19 0 | 21 0 | 23 0 | 230 | 225 | 225 | 225 | |||
| Die lip machinin g temperat ure | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 5 |
| 22 1 | 22 3 | 22 5 | 22 5 | 225 | 223 | 223 | 234/3.8V | |||
| Resin pressure (MPa) | Bef ore the me sh | 7.2 | Resin temperat ure | Bef ore the mes h | 218. 6 | Corona output power (kw.h) | Electr ode 1 | 3.85 | ||
| Aft er the me sh | 1.4 | Aft er the mes h | 188. 2 | Electr ode 2 | 3.55 | |||||
| Improve ment measures | The synchronous speed ratio of the extruder rises from 80 to 82, and fine adjustment of the temperature is set in zone C and zone D. | |||||||||
| Trial run conclusi ons | OK |
[0063] Statistical table of process parameters for Bio-PBS coating machine trial run io
2020100286 26 Feb 2020
| P r 0 c e s s | Date: July 17, 2017, 19:00 | Type of coating: double side coating | Batch: Roll 4 | |||||||
| C 0 at i n g | Resin used | FZ71PM:FZ91PM | Additive | MZ7A010EMZ7C0 201 | Ratio | ® 50:50 :2:1 © 50:50 :2:2 0:50:1:1 | ||||
| Gram weight of paper | 280 | Gram weight of coating | 20+20 | Production speed | 100 | |||||
| Screw machini ng tempera ture | Cl | C2 | C3 | C 4 | C5 | Con necti on | Mesh replac ement | Die neck | Cooling water temperature (°C) | 18 |
| 160 | 19 0 | 21 0 | 23 0 | 230 | 225 | 225 | 225 | |||
| Die lip machini ng tempera ture | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 5 |
| 221 | 22 3 | 22 5 | 22 5 | 225 | 223 | 223 | 216/3.2 V | |||
| Resin pressure (MPa) | Befo re the mes h | 8.3 | Resin temperat ure | Bef ore the mes h | 220. 4 | Corona output power (kw.h) | Electr ode 1 | 3.85 | ||
| Afte r the mes h | 1.6 | Aft er the mes h | 190. 8 | Electr ode 2 | 3.55 | |||||
| Improv ement measure s | The coating speed rises to 100. | |||||||||
| Trial run conclusi ons | Surface ® 0-2650 m ratio: 50:50:2:1 Surface ® 0-1400 m ratio: 50:50:2:2 1400-2650 m ratio: 0:50:1:1 (the pure 91 coating effect is poor.) |
[0064] Statistical table of process parameters for Bio-PBS coating machine trial run
2020100286 26 Feb 2020
| P r 0 c e s s | Date: July 17, 2017, 20:00 | Type of coating: single side coating | Batch: Roll 5 | |||||||
| C 0 at i n g | Resin used | FZ71PM:FZ91PM | Additive | MZ7A010EMZ7C0 201 | Ratio | 50:50: 2:1 | ||||
| Gram weight of paper | 280 | Gram weight of coating | 20 | Production speed | 100 | |||||
| Screw machini ng tempera ture | Cl | C2 | C3 | C 4 | C5 | Con necti on | Mesh replac ement | Die neck | Cooling water temperature (°C) | 18 |
| 160 | 19 0 | 21 0 | 23 0 | 230 | 225 | 225 | 225 | |||
| Die lip machini ng tempera ture | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 5 |
| 221 | 22 3 | 22 5 | 22 5 | 225 | 223 | 223 | 215/3.8 V | |||
| Resin pressure (MPa) | Befo re the mes h | 8.4 | Resin temperat ure | Bef ore the mes h | 220. 8 | Corona output power (kw.h) | Electr ode 1 | 3.85 | ||
| Afte r the mes h | 1.6 | Aft er the mes h | 191. 7 | Electr ode 2 | 3.55 | |||||
| Improv ement measure s | The synchronous speec | ratio of an extruder is 80. | ||||||||
| Trial run conclusi ons | OK |
[0065] Statistical table of process parameters for Bio-PBS coating machine trial run
2020100286 26 Feb 2020
| P r 0 c e s s | Date: July 17, 2017, 20:25 | Type of coating: single side coating | Batch: Roll 6 | |||||||
| C 0 at i n g | Resin used | FZ71PM:FZ91PM | Additive | MZ7A010EMZ7C0 201 | Ratio | 50:50: 2:1 | ||||
| Gram weight of paper | 280 | Gram weight of coating | 20 | Production speed | 115 | |||||
| Screw machini ng tempera ture | Cl | C2 | C3 | C 4 | C5 | Con necti on | Mesh replac ement | Die neck | Cooling water temperature (°C) | 18.5 |
| 160 | 19 0 | 21 0 | 23 0 | 225 | 225 | 225 | 225 | |||
| Die lip machini ng tempera ture | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 5 |
| 221 | 22 3 | 22 5 | 22 5 | 225 | 223 | 223 | 215/3.8 V | |||
| Resin pressure (MPa) | Befo re the mes h | 9.5 | Resin temperat ure | Bef ore the mes h | 220. 9 | Corona output power (kw.h) | Electr ode 1 | 3.85 | ||
| Afte r the mes h | 1.8 | Aft er the mes h | 192. 3 | Electr ode 2 | 3.6 | |||||
| Improv ement measure s | The synchronous speec | ratio of an extruder is 80. | ||||||||
| Trial run conclusi ons | OK |
[0066] Statistical table of process parameters for Bio-PBS coating machine trial run
2020100286 26 Feb 2020
| P r 0 c e s s | Date: Tuesday, July 18, 2017, 10:00 | Type of coating: single side coating | Batch: Roll 7 | |||||||
| C 0 at i n g | Resin used | FZ71PM:FZ91PM | Additive | MZ7A010EMZ7C0 201 | Ratio | 25:75: 2:1 | ||||
| Gram weight of paper | 280 | Gram weight of coating | 20 | Production speed | 85 | |||||
| Screw machini ng tempera ture | Cl | C2 | C3 | C 4 | C5 | Con necti on | Mesh replac ement | Die neck | Cooling water temperature (°C) | 18.5 |
| 160 | 19 0 | 21 0 | 23 0 | 230 | 225 | 225 | 225 | |||
| Die lip machini ng tempera ture | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 5 |
| 221 | 22 3 | 22 3 | 22 3 | 223 | 223 | 223 | 215/2V | |||
| Resin pressure (MPa) | Befo re the mes h | 8.3 | Resin temperat ure | Bef ore the mes h | 221. 2 | Corona output power (kw.h) | Electr ode 1 | 3.85 | ||
| Afte r the mes h | 1.3 | Aft er the mes h | 189. 9 | Electr ode 2 | 3.51 | |||||
| Improv ement measure s | Ratio change FZ71PM:FZ91PM = 25%:75% | |||||||||
| Trial run conclusi ons | The peeling strength is not good, but the cylinder sticking is slightly improved. |
[0067] Statistical table of process parameters for Bio-PBS coating machine trial run
| P r 0 c e s s | Date: Tuesday, July 18, 2017, 10:20 | Type of coating: single side coating | Batch: Roll 8 |
2020100286 26 Feb 2020
| c 0 at i n g | Resin used | FZ71PM:FZ91PM | Additive | MZ7A010EMZ7C0 201 | Ratio | 25:75: 2:1 50:50: 2:2 | ||||
| Gram weight of paper | 280 | Gram weight of coating | 20 | Production speed | 95 | |||||
| Screw machini ng tempera ture | Cl | C2 | C3 | C 4 | C5 | Con necti on | Mesh replac ement | Die neck | Cooling water temperature (°C) | 19 |
| 160 | 19 0 | 21 0 | 23 0 | 230 | 225 | 225 | 225 | |||
| Die lip machini ng tempera ture | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 5 |
| 221 | 22 3 | 22 5 | 22 5 | 225 | 225 | 223 | 233 | |||
| Resin pressure (MPa) | Befo re the mes h | 8.5 | Resin temperat ure | Bef ore the mes h | 221. 6 | Corona output power (kw.h) | Electr ode 1 | 3.75 | ||
| Afte r the mes h | 1.3 | Aft er the mes h | 191. 7 | Electr ode 2 | 3.55 | |||||
| Improv ement measure s | The rear section ratio change is FZ71PM:FZ91PM = 50%:50%. | |||||||||
| Trial run conclusi ons | 0-2050 m ratio: 25:75:2:1 2050-2800 m ratio: ratio: 50:50:2:2 |
[0068] Statistical table of process parameters for Bio-PBS coating machine trial run
| P r 0 c e s s | Date: Tuesday, July 18, 2017, 11:00 | Type of coating: single side coating | Batch: Roll 9 |
2020100286 26 Feb 2020
C o at i n g
| Resin used | FZ71PM:FZ91PM | Additive | MZ7A0101:MZ7C0 201 | Ratio | 50:50: 2:2 | |||||
| Gram weight of paper | 230 | Gram weight of coating | 20 | Production speed | 102 | |||||
| Screw machini ng tempera ture | Cl | C2 | C3 | C 4 | C5 | Con necti on | Mesh replac ement | Die neck | Cooling water temperature (°C) | 18.5 |
| 160 | 19 0 | 21 0 | 23 0 | 230 | 225 | 225 | 225 | |||
| Die lip machini ng tempera ture | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 5 |
| 221 | 22 3 | 22 5 | 22 5 | 225 | 225 | 223 | 232 | |||
| Resin pressure (MPa) | Befo re the mes h | 9.6 | Resin temperat ure | Bef ore the mes h | 221. 2 | Corona output power (kw.h) | Electr ode 1 | 3.75 | ||
| Afte r the mes h | 1.4 | Aft er the mes h | 192. 3 | Electr ode 2 | 3.55 |
The synchronous speed ratio of the extruder changes from 80 to 82.
Improv ement measure s_________
Trial run conclusi ons
The accuracy of the gram weight of the coating is improved.
[0069] Statistical table of process parameters for Bio-PBS coating machine trial run
| P r 0 c e s s | Date: Tuesday, July 18, 2017, 11:40 | Type of coating: double side coating | Batch: Roll 10 |
2020100286 26 Feb 2020
| c 0 at i n g | Resin used | FZ71PM:FZ91PM | Additive | MZ7A010EMZ7C0 201 | Ratio | Φ 50:50: 2:2 ® 50:50: 2:2 | ||||
| Gram weight of paper | 230 | Gram weight of coating | 20+20 | Production speed | 120 ; 105 | |||||
| Screw machini ng tempera ture | Cl | C2 | C3 | C 4 | C5 | Con necti on | Mesh replac ement | Die neck | Cooling water temperature (°C) | 18.5 f 23 |
| 160 | 19 0 | 21 0 | 23 0 | 230 | 225 | 225 | 225 | |||
| Die lip machini ng tempera ture | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 5 |
| 221 | 22 3 | 22 5 | 22 5 | 225 | 225 | 223 | 232 | |||
| Resin pressure (MPa) | Befo re the mes h | 10. 7 | Resin temperat ure | Bef ore the mes h | 221. 6 | Corona output power (kw.h) | Electr ode 1 | 3.85 | ||
| Afte r the mes h | 1.6 | Aft er the mes h | 192. 6 | Electr ode 2 | 3.55 | |||||
| Improv ement measure s | The coating of the surface ® is: The speed is reduced from 120 to 105. The air-conditioning cooling water temperature rises from 18.5°C to 23°C due to more condensed water at the edge of the cylinder body. C3 to C5 are 215/235/235 respectively. DI to D7 are 225/227/230/230/230/227/225/236 respectively. | |||||||||
| Trial run conclusi ons | OK |
[0070] Statistical table of process parameters for Bio-PBS coating machine trial run
| P r 0 c e s s | Date: Tuesday, July 18, 2017, 12:00 | Type of coating: double side coating | Batch: Roll 11 |
2020100286 26 Feb 2020
| c 0 at i n g | Resin used | FZ71PM:FZ91PM | Additive | MZ7A010EMZ7C0 201 | Ratio | Φ 50:50: 2:2 ® 50:50: 2:2 | ||||
| Gram weight of paper | 230 | Gram weight of coating | 20+20 | Production speed | 120 ; 105 | |||||
| Screw machini ng tempera ture | Cl | C2 | C3 | C 4 | C5 | Con necti on | Mesh replac ement | Die neck | Cooling water temperature (°C) | 18 f 22 |
| 160 | 19 0 | 21 0 | 23 0 | 230 | 225 | 225 | 225 | |||
| Die lip machini ng tempera ture | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 5 |
| 221 | 22 3 | 22 5 | 22 5 | 225 | 225 | 223 | 231 | |||
| Resin pressure (MPa) | Befo re the mes h | 10. 6 | Resin temperat ure | Bef ore the mes h | 222. 4 | Corona output power (kw.h) | Electr ode 1 | 3.85 | ||
| Afte r the mes h | 1.5 | Aft er the mes h | 193. 4 | Electr ode 2 | 3.55 | |||||
| Improv ement measure s | The coating of the surface ® is: The speed is reduced from 120 to 105. The air-conditioning cooling water temperature is 22°C due to more condensed water at the edge of the cylinder body. Raised local temperatures D3 to D5 are 230/230/230 respectively. | |||||||||
| Trial run conclusi ons | Due to the problem of double coating edge cutting, the width is reduced from 740 to 720. |
[0071] Statistical table of process parameters for Bio-PBS coating machine trial run
| P r 0 c e s s | Date: Tuesday, July 18, 2017, 12:30 | Type of coating: single side coating | Batch: Roll 12 |
2020100286 26 Feb 2020
| c 0 at i n g | Resin used | FZ71PM:FZ91PM | Additive | MZ7A0101:MZ7C0 201 | Ratio | 50:50: 2:2 | ||||
| Gram weight of paper | 230 | Gram weight of coating | 20 | Production speed | 102 | |||||
| Screw machini ng tempera ture | Cl | C2 | C3 | C 4 | C5 | Con necti on | Mesh replac ement | Die neck | Cooling water temperature (°C) | 18.5 |
| 160 | 19 0 | 21 0 | 23 0 | 230 | 225 | 225 | 225 | |||
| Die lip machini ng tempera ture | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 5 |
| 221 | 22 3 | 22 5 | 22 5 | 225 | 225 | 223 | 231 | |||
| Resin pressure (MPa) | Befo re the mes h | 10. 7 | Resin temperat ure | Bef ore the mes h | 222. 1 | Corona output power (kw.h) | Electr ode 1 | 3.65 | ||
| Afte r the mes h | 1.6 | Aft er the mes h | 193. 2 | Electr ode 2 | 3.55 | |||||
| Improv ement measure s | \ | |||||||||
| Trial run conclusi ons | OK |
[0072] Statistical table of process parameters for Bio-PBS coating machine trial run
| P r 0 c e s s | Date: Tuesday, July 18, 2017, 3:30 | Type of coating: single side coating | Batch: Roll 13 | |||
| C 0 at i n g | Resin used | FZ71PM:FZ91PM | Additive | MB92AM:MZ7C02 01 | Ratio | 0:100: 4:2 |
| Gram weight of paper | 280 | Gram weight of coating | 20 | Production speed | 90 | |
| Screw machini | Cl C2 C3 C 4 | C5 Con necti | Mesh Die neck replac | Cooling water | 22 |
2020100286 26 Feb 2020
| ng tempera ture | on | ement | temperature (°C) | |||||||
| 180 | 22 0 | 24 5 | 26 0 | 255 | 250 | 250 | 250 | |||
| Die lip machini ng tempera ture | DI | D2 | D3 | D 4 | D5 | D6 | D7 | Die lip | Compound pressure (MPa) | 5 |
| 245 | 25 0 | 25 0 | 25 0 | 250 | 250 | 245 | 279/3.5V | |||
| Resin pressure (MPa) | Befo re the mes h | 9.2 | Resin temperat ure | Bef ore the mes h | 246. 7 | Corona output power (kw.h) | Electr ode 1 | 3.75 | ||
| Afte r the mes h | 1.5 | Aft er the mes h | 204. 7 | Electr ode 2 | 3.55 | |||||
| Improv ement measure s | Pure MB92 The te | 7Z91PM particles are present, and the additive changes from MZ7A0101 to AM. mperature in each zone rises as a whole, and the coating speed is 95-100. | ||||||||
| Trial run conclusi ons | The trial coating length L is approximately equal to 800 m. The peeling strength has been improved, and it is temporarily determined to be OK. |
[0073] Check items and results of the finished coated paper
| No. | Width | Gram weight | Coating type | Ratio | Notes | |
| Roll 1 | 740 | 280 + (16-20) | Single side coating | 75:25:2:1 | \ | |
| Roll 2 | 740 | 280+20 | Single side coating | 75:25:2:1 | \ | |
| Roll 3 | 720 | 20+280+20 | Double side coating | 50:50:2:1 | 50:50:2:2 |
2020100286 26 Feb 2020
| Roll 4 | 720 | 20+280+20 | Double side coating | 50:50:2:1 | 50:50:2:2 | Front 0-2650 m; and the ratio is 50:50:2:1; the back 0-1400 m; the ratio is 50:50:2:2; OK, 1400-2650 m; the ratio is 0:50:1:1 NG. |
| Roll 5 | 740 | 280+20 | Single side coating | 50:50:2:1 | \ | |
| Roll 6 | 740 | 280+20 | Single side coating | 50:50:2:1 | \ | |
| Roll 7 | 740 | 280+20 | Single side coating | 25:75:2:1 | \ | The peeling strength is not ideal, but the cylinder sticking is improved. |
| Roll 8 | 740 | 280+20 | Single side coating | 25:75:2:1 50:50:2:2 | \ | 0-2050; the ratio is 25:75:2:1, 2050-2800, the ratio is 50:50:2:2. |
2020100286 26 Feb 2020
| Roll 9 | 740 | 230+20 | Single side coating | 50:50:2:2 | \ | The synchronous speed ratio is adjusted to 82, and the gram weight of the coating is more accurate. |
| Roll 10 | 720 | 20+230+20 | Double side coating | 50:50:2:2 | 50:50:2:2 | The speed is reduced from 120 to 105, and the local fine adjustment in zone C and zone D is slightly increased. The air-conditioning cooling water temperature rises from 18.5°C to 23°C due to more condensed water at the edge of the |
2020100286 26 Feb 2020
| cylinder body. | ||||||
| Roll 11 | 720 | 20+230+20 | Double side coating | 50:50:2:2 | 50:50:2:2 | The speed is reduced from 120 to 105; temperatures of D3/4/5 are 225 to 230°C. |
| Roll 12 | 740 | 230+20 | Single side coating | 50:50:2:2 | ||
| Roll 13 | 740 | 280+20 | Single side coating | 0:100:4:2 | \ | The temperature rises as a whole, the speed is 100, test coating L = 800 m (change items 0101 to 94AM). |
[0074] (1) Appearance [0075] Φ The coating layer is evenly coated and has the same thickness, and has no bad phenomena such as film missing, film peeling, film shrinkage and delamination.
[0076] ® The end surface of the roll paper is flat, and there is no serious warpage or unevenness. The number of joints of the whole roll paper is less than or equal to 1, and the joint has obvious marks.
[0077] ® Bio-PBS coating films on both sides of the roll paper: trim neatly, without burrs and notches.
[0078] ® The composite surface of base paper and Bio-PBS coating has no wrinkles.
[0079] (2) Dimension
2020100286 26 Feb 2020 [0080] According to the gram weight regulations of PE coated paper, the deviation of the gram weight of the coating shall not exceed ±2 g/m2, and the gram weight range of the PE coating may refer to the following standards: due to the composite characteristics of the biodegradable coated paper, for the base paper with the specifications of 230 g/m2 and 280 g/m2 , the preset gram weight of the coating of a process device shall be set to 20 g/m2, so as to ensure its composite strength. The quantitative and peeling strength test results of the biodegradable coated paper obtained in this trial production are as follows:
| Paper specifications (width * theoretical basis weight) (g/m2) | Bio-PBS basis weight (g/ m2) | Peeling strength | ||
| Double side coating 745 * (20+230+20) | 20+0.8 | 20+1 | 1.3+0.3 | 1.2+0.25 |
| Single side coating 745 * (230+20) | 20+0.7 | 1.4 | ±0.2 | |
| Double side coating 745 * (20+280+20) | 20+1 | 20+0.7 | 1.2+0.3 | 1.4+0.3 |
| Single side coating 745 * (280+20) | 20+0.8 | 1.2+0.15 |
[0081] (3) The quality standard and test report of the biodegradable coated paper (this test method and standard temporarily try out the relevant standards of PE coated paper GB), and main test indexes include: Φ quantitative; ® quantitative difference; ® banner quantitative difference; © thickness; ® banner thickness difference; ® dimensional error (reel diameter+width); ® whiteness; ® PBS quantitative difference; ® moisture; © stiffness; ® smoothness; © peeling strength; © ash content; @ dirt count; © water absorption; © side seepage; © appearance; © odor; © hygiene index; and ® plasticizer index, etc.
[0082] Key index description of coated paper (bio-PBS) shows that the quantitative fluctuation < 1 g/m2 and peeling strength test (based on reasonable sample width, length and peeling speed) results all meet the relevant standards of PE coated paper.
[0083] Experimental indexes of air permeability and water seepage of BioPBS coated paper (tested by a third party ptt-MCC Company):
| Material | Permeable rate/air permeability | |
| Water (WVTR) | Oxygen (OTR) | |
| [g/m2 day] | [emW under atmospheric pressure per day] | |
| BioPBS FZ91 coated paper | 537 | 454 |
| BioPBS FZ71+FZ91 coated paper | 512 | 442 |
2020100286 26 Feb 2020 [0084] ->The air permeability standard value: water (WVTR): ASTM E96/E96M-10 temperature: 38°C/90% RH [0085] ^Oxygen (OTR) ASTM D3985-05 temperature 23°C/0% RH
| Inspection items of coated paper | Unit | Technical requirements | Detection result | 5>ingi . e a ation | ||
| hygie nic index | Evaporation residue | 4% acetic acid, 60°C, 2 h | mg/L | <30 | 7 | Quali fied |
| 4% n-hexane, 60°C, 2 h | <60 | 6 | Quali fied | |||
| Potassium permanganate consumption, 60°C, 2 h | < 10 | 1 | Quali fied | |||
| Lead (based on pb) | mg/kg | <5 | 0.6 | Quali fied | ||
| Arsenic (based on As) | < 1.0 | Not detected (detection limit: 0.2) | Quali fied | |||
| Fluorescent substances (254 nm and 365 nm) | cm2 | Five 100 cm2 paper samples were randomly selected from the test and checked under ultraviolet lamps with wavelengths of 365 nm and 254 nm. The maximum fluorescence area of any paper sample shall not be greater than 5 cm2. | <5 | Quali fied | ||
| Decolorizati on test | Water | \ | Negative | Negative | Quali fied | |
| n-hexane | Negative | Negative | Quali fied |
[0086] In summary, it can be concluded that:
[0087] Key indexes such as basis weight, peeling strength, air permeability, water permeability and hygienic indexes of the biodegradable coated paper can meet the detection
2020100286 26 Feb 2020 related requirements for PE coated paper.
[0088] The foregoing descriptions are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in art can easily conceive of variations or replacements within the technical scope disclosed in the present invention, and the variations or replacements should fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the claims.
Claims (9)
1. A biodegradable coated paper, comprising a substrate and a biodegradable material coating (12) that coats the surface of the substrate, wherein the substrate comprises a coating bearing layer (11) and a supporting and reinforcing layer; the biodegradable material coating the surface of one side of the coating bearing layer (11) forms the coating (12), and the supporting and reinforcing layer is disposed on the surface of the other side of the coating bearing layer (11) and can support or reinforce the coating bearing layer (11).
2. The biodegradable coated paper according to claim 1, wherein the supporting and reinforcing layer is corrugated paper, hollow paper or a white cardboard.
3. The biodegradable coated paper according to claim 2, wherein the hollow paper comprises a hollow paper body (13), two opposite edges of the hollow paper body (13) are folded inwards, outer surfaces of the folded edge parts are attached to the surface of the other side of the coating bearing layer (11), and a hollow chamber exists between an area between the two edges of the hollow paper body (13) and the coating bearing layer (11).
4. The biodegradable coated paper according to claim 2, wherein the corrugated paper comprises corrugated bottom paper (14) and a corrugated paper outer layer (15), wherein the corrugated bottom paper (14) is attached to the surface of the other side of the coating bearing layer (11), the corrugated paper outer layer (15) is attached to the surface of one side of the corrugated bottom paper (14) facing away from the coating bearing layer (11), and the corrugated paper outer layer (15) is in a folded shape.
5. The biodegradable coated paper according to claim 1, wherein the biodegradable material comprises polybutylene succinate.
6. A coating machine for producing the biodegradable coated paper according to any one of claims 1 to 5, comprising an extrusion system and a pressing system (3), wherein the extrusion system can extrude the biodegradable material to the surface of the substrate paper, and the pressing system (3) can compound the biodegradable material with the coating bearing layer (11) in a pressing manner.
7. The coating machine according to claim 6, wherein the extrusion system comprises a storage device (7) and a discharging device (2), wherein a material outlet of the discharging device (2) is communicated with an inlet of the discharging device (2); the discharging device (2) can extrude the biodegradable material stored in the storage device (7) to the surface of the substrate
2020100286 26 Feb 2020 paper through a screw barrel (25), a die head 26 and a die lip (24) on the die head 26 which are mutually communicated with each other; a pressure regulating device (22) and a funnel valve (23) are disposed in the discharging device (2); and a filter screen (21) is disposed in the pressure regulating device (22).
5
8. The coating machine according to claim 7, wherein a compound system comprises a composite roller (3), and the outer surface of the composite roller (3) is provided with sandblasted and electroplated teflon.
9. The coating machine according to claim 8, further comprising a roll paper system and a conveying system, wherein the roll paper system comprises an unwinding device (4) and a 10 winding device (6); the rolled coating bearing layer (11) is unwound by the unwinding device (4) and conveyed to a position where the extrusion system and the compound system (3) are compounded in a single layer form by the conveying system; and the coating (12) paper made by the extrusion system and the compound system (3) is sent through the conveying system to the winding device (6) for winding.
15 10. The coating machine according to claim 9, further comprising a corona mechanism (5), wherein the corona mechanism (5) is disposed between the unwinding device (4) and the compound system (3) and can improve the adhesion of the surface of the coating bearing layer (11), and the coating bearing layer (11) is sequentially conveyed from the unwinding device (4) to the corona mechanism (5) and the compound system (3) through the conveying system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020100286A AU2020100286A4 (en) | 2017-09-05 | 2020-02-26 | Biodegradable coated paper and device for producing same |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710804066.X | 2017-09-05 | ||
| CN201721133339.4 | 2017-09-05 | ||
| PCT/CN2017/102420 WO2019047280A1 (en) | 2017-09-05 | 2017-09-20 | Biodegradable coated paper and production device therefor |
| AU2020100286A AU2020100286A4 (en) | 2017-09-05 | 2020-02-26 | Biodegradable coated paper and device for producing same |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2017/102420 Division WO2019047280A1 (en) | 2017-09-05 | 2017-09-20 | Biodegradable coated paper and production device therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020100286A4 true AU2020100286A4 (en) | 2020-04-02 |
Family
ID=69994596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020100286A Ceased AU2020100286A4 (en) | 2017-09-05 | 2020-02-26 | Biodegradable coated paper and device for producing same |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2020100286A4 (en) |
-
2020
- 2020-02-26 AU AU2020100286A patent/AU2020100286A4/en not_active Ceased
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