CN107554932B - Double-layer paper tube packaging container - Google Patents
Double-layer paper tube packaging container Download PDFInfo
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- CN107554932B CN107554932B CN201710910857.0A CN201710910857A CN107554932B CN 107554932 B CN107554932 B CN 107554932B CN 201710910857 A CN201710910857 A CN 201710910857A CN 107554932 B CN107554932 B CN 107554932B
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- paper tube
- layer
- fixing part
- double
- packaging container
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 41
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 27
- 239000001301 oxygen Substances 0.000 claims abstract description 27
- 230000004888 barrier function Effects 0.000 claims abstract description 18
- 239000000976 ink Substances 0.000 claims description 34
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 21
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 21
- 239000002086 nanomaterial Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 17
- 238000000576 coating method Methods 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 14
- 239000003973 paint Substances 0.000 claims description 14
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 229920006378 biaxially oriented polypropylene Polymers 0.000 claims description 6
- 239000011127 biaxially oriented polypropylene Substances 0.000 claims description 6
- 239000005025 cast polypropylene Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000004014 plasticizer Substances 0.000 claims description 4
- 239000013543 active substance Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 54
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 239000000835 fiber Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 229910052742 iron Inorganic materials 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 230000007613 environmental effect Effects 0.000 description 8
- 229920001046 Nanocellulose Polymers 0.000 description 7
- 238000011049 filling Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 239000005543 nano-size silicon particle Substances 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 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 2
- 238000005429 filling process Methods 0.000 description 2
- 229910052976 metal sulfide Inorganic materials 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 239000000600 sorbitol Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229910052946 acanthite Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- VIDTVPHHDGRGAF-UHFFFAOYSA-N selenium sulfide Chemical compound [Se]=S VIDTVPHHDGRGAF-UHFFFAOYSA-N 0.000 description 1
- 229960005265 selenium sulfide Drugs 0.000 description 1
- XUARKZBEFFVFRG-UHFFFAOYSA-N silver sulfide Chemical compound [S-2].[Ag+].[Ag+] XUARKZBEFFVFRG-UHFFFAOYSA-N 0.000 description 1
- 229940056910 silver sulfide Drugs 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Abstract
The embodiment of the invention relates to a double-layer paper tube packaging container, which comprises: the thickness of the outer paper tube is more than 2mm, and the two ends of the outer paper tube are provided with a first seal and a second seal; the inner paper cylinder is arranged in the outer paper cylinder, and the thickness is less than 2mm; the upper bottom is arranged in one end of the inner paper tube; the upper bottom comprises a first fixing part and a first connecting part; the lower bottom is arranged at the other end of the inner paper tube; the lower bottom comprises a second fixing part and a second connecting part; the upper cover is arranged at the first sealing part of the outer paper tube; the upper cover is provided with a step structure at the edge of the mounting side; the lower cover is arranged at the second sealing part of the outer paper tube; the lower cover is provided with a step structure at the edge of the mounting side; the oxygen barrier layer is arranged on the inner side surfaces of the inner wall, the upper bottom and the lower bottom of the inner paper tube. According to the invention, the inner paper tube can be pulled out from the outer paper tube, the environment-friendly treatment is carried out independently, the outer paper tube can be reused, and the environment-friendly recovery is realized.
Description
Technical Field
The invention relates to the technical field of packaging, in particular to a double-layer paper tube packaging container.
Background
The ink, paint and coating are materials frequently used in industrial production and daily life, wherein the ink comprises main components and auxiliary components, the main components and the auxiliary components are uniformly mixed and repeatedly rolled to form a viscous colloidal fluid, the coating is usually a viscous liquid prepared by using resin, oil or emulsion as a main component, adding or not adding pigment and filler, adding corresponding auxiliary agents and using an organic solvent or water, and the paint is also a viscous liquid.
In the prior art, in the package of the viscous liquid, the main storage mode is that a large iron barrel is adopted for containing, ink, paint and coating are in direct contact with the iron barrel, when the package is used, the liquid needs to be manually transferred, the liquid in the iron barrel cannot be completely cleaned, residual ink, paint or coating is solidified in the iron barrel, the iron barrel can be caused to become a danger charge with a larger volume, at present, the treatment difficulty of the danger charge is larger, and the treatment pollution is serious. Meanwhile, the iron barrel has large volume and weight, so that the transportation cost is high.
Disclosure of Invention
The invention aims to provide a double-layer paper tube packaging container, which adopts a double-sleeve paper tube structure, an external protective layer adopts a high-strength paper tube with higher thickness, an internal containing layer adopts a soft and easily-deformed thin paper tube, the inner surface of the thin paper tube is coated with an oxygen-insulating layer and a waterproof layer, the oxidation and drying of printing ink, paint or coating are prevented, the penetration of the contained matters into the paper tube is avoided, the inner paper tube and the outer paper tube are tightly attached, after the use is finished, the inner paper tube is separated from the outer paper tube through deformation, the environment-friendly treatment is independently carried out, the outer paper tube can be reused, the problem that the iron barrel package is difficult to process is solved, and the environment-friendly recovery is realized. The packaging container has the advantages of simple structure, light weight and reduced transportation cost.
To achieve the above object, the present invention provides a double-layered paper tube packaging container comprising:
the thickness of the outer paper tube is larger than 2mm; the two ends of the outer paper tube are provided with a first seal and a second seal;
the inner paper tube is arranged in the outer paper tube; the thickness of the inner paper tube is smaller than 2mm;
the upper bottom is arranged in one end of the inner paper tube; the upper bottom comprises a first fixing part and a first connecting part;
the outer diameter of the first fixing part is matched with the inner diameter of the inner paper tube, and the side wall of the first fixing part is in sealing connection with the inner wall of the inner paper tube;
the first connecting part is integrally connected with one end of the first fixing part, so that a closed connecting structure is formed between the inner paper tube and the upper bottom;
the lower bottom is arranged at the other end of the inner paper tube; the lower bottom comprises a second fixing part and a second connecting part;
the outer diameter of the second fixing part is matched with the inner diameter of the inner paper tube, and the side wall of the second fixing part is in sealing connection with the inner wall of the inner paper tube;
the second connecting part is integrally connected with one end of the second fixing part, so that a closed connecting structure is formed between the inner paper tube and the lower bottom;
the upper cover is arranged at the first sealing part of the outer paper tube; the upper cover is provided with a step structure at the edge of the installation side; the outer edge diameter of the step structure of the upper cover is matched with the inner diameter of the outer paper tube, and the inner edge diameter of the step structure of the upper cover is matched with the inner diameter of the first fixing part;
the lower cover is arranged at the second sealing part of the outer paper tube; the lower cover is provided with a step structure at the edge of the installation side; the outer edge diameter of the step structure of the lower cover is matched with the inner diameter of the outer paper tube, and the inner edge diameter of the step structure of the lower cover is matched with the inner diameter of the second fixing part;
the oxygen isolation layer is arranged on the inner wall of the inner paper tube, the inner side surfaces of the upper bottom and the lower bottom; the oxygen barrier layer at least comprises polyvinyl alcohol PVA and/or nano materials.
Preferably, the outer diameter of the inner paper tube is matched with the inner diameter of the outer paper tube.
Preferably, the upper cover and the lower cover are made of metal, plastic or other hard composite board materials; the upper cover and the lower cover comprise a cover body, a rotating part and a telescopic fixed rod, the rotating part is arranged above the cover body, the telescopic fixed rod is arranged between the cover body and the rotating part, one end of the telescopic fixed rod is connected with the rotating part and rotates on the cover body along with the rotating part, and the other end of the telescopic fixed rod extends out of the cover body; the outer paper tube is provided with a telescopic hole, and the position of the telescopic hole corresponds to the telescopic fixing rod.
Preferably, the upper bottom and the lower bottom are made of paper materials, the upper bottom is attached to or iron-bonded in one end of the inner paper tube, and the lower bottom is attached to or iron-bonded in the other end of the inner paper tube.
Preferably, a drawing device is arranged on the outer side of the inner paper tube and used for assisting the separation of the inner paper tube and the outer paper tube.
Preferably, the oxygen barrier layer further comprises a plasticizer and/or an active agent.
Preferably, the waterproof layer is arranged on the outer paper tube and is made of a waterproof film material, and the waterproof layer material comprises any one or more of polyethylene PE, biaxially oriented polypropylene film BOPP, polyethylene terephthalate PET and cast polypropylene film CPP.
Preferably, a first chamfer is arranged at the joint of the first connecting part and the first fixing part; and a second chamfer is arranged at the joint of the second connecting part and the second fixing part.
Preferably, a round hole is formed in the first connecting portion of the upper bottom, and sealing paper is adhered to the round hole.
Preferably, the container is used for packaging of inks, paints or coatings.
The double-layer paper tube packaging container provided by the embodiment of the invention adopts a double-sleeve paper tube structure, the outer part adopts a high-strength paper tube with higher thickness as an outer protective layer, the inner part adopts a soft and easily-deformed thin paper tube, the inner surface of the thin paper tube is coated with an oxygen-insulating layer and a waterproof layer, and the inner surface and the outer surface of the thin paper tube are tightly adhered to each other as a containing layer, so that the weight is light, the transportation cost is reduced, the deformation of the inner paper tube can be extracted from the outer paper tube after the packaging container is used, the outer paper tube can be independently subjected to environmental protection treatment, the outer paper tube can be repeatedly used, the problem that the iron barrel package is difficult to process is solved, and the environmental protection recovery is realized.
Drawings
Fig. 1 is a schematic cross-sectional view of a double-layer paper tube packaging container according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a change in top view of a double-layer paper tube packaging container according to an embodiment of the present invention;
fig. 3 is a schematic front view of a double-layer paper tube packaging container according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
The embodiment of the invention relates to a double-layer paper tube packaging container for containing printing ink, paint and coating, which adopts a double-sleeve paper tube structure, wherein an inner paper tube and an outer paper tube are tightly attached, after the use is finished, the inner paper tube can be deformed and pulled away from the outer paper tube, the outer paper tube can be independently subjected to environmental protection treatment, the outer paper tube can be repeatedly used, the problem that the iron tube packaging is difficult to process is solved, the environmental protection recovery is realized, the packaging container is light in weight, and the transportation cost is reduced.
Fig. 1 is a schematic cross-sectional view of a double-layer paper tube packaging container according to an embodiment of the present invention. As shown in fig. 1, a double-layer paper tube packaging container provided by an embodiment of the present invention includes: an outer paper tube 1, an inner paper tube 2, an upper bottom 3, a lower bottom 4, an upper cover 5, a lower cover 6 and an oxygen barrier layer (not shown in the figure).
The outer paper tube 1 is a high-strength paper tube, the thickness is greater than 2mm, the two ends of the outer paper tube 1 are provided with a first seal 11 and a second seal 12, the outer paper tube 1 is used as an outer protective layer, and a firm accommodating space is provided for the inner accommodating layer.
The inner paper tube 2 is a paper tube formed by thinner paper Zhang Juan, is arranged in the outer paper tube 1, the outer diameter of the inner paper tube 2 is matched with the inner diameter of the outer paper tube 1, the inner paper tube 2 and the outer paper tube 1 are tightly attached, the thickness of the inner paper tube 2 is smaller than 2mm, the strength is soft, the inner paper tube is used as an inner containing layer, and after the packaging container is used, the inner paper tube is easy to deform, so that the inner paper tube is extracted from the outer paper tube 1, and the environment-friendly treatment is independently carried out.
In order to make the inner paper tube 2 more easily deformed and pulled out from the outer paper tube 1 after being used, a pulling device can be further arranged on the outer side of the inner paper tube 2, and when the paper tube is used, the inner paper tube 2 is deformed by pulling the pulling device and pulled out from the outer paper tube 1 so as to be separated from the outer paper tube 1.
When storing ink, paint or coating, the inner paper tube 2 needs to form a sealing structure, so that the upper bottom 3 and the lower bottom 4 are respectively arranged at two ends of the inner paper tube 2, and preferably, the upper bottom 3 and the lower bottom 4 are made of paper materials.
Wherein, upper bottom 3 is disposed in one end of inner paper tube 2, and includes first fixing portion 31 and first connecting portion 32. The outer diameter of the first fixing part 31 is matched with the inner diameter of the inner paper tube 2, and the side wall of the first fixing part 31 is in sealing connection with the inner wall of the inner paper tube 2; the first connecting portion 32 is integrally connected to one end of the first fixing portion 31, so that a sealed connection structure is formed between the inner paper tube 2 and the upper base 3.
The lower base 4 is provided at the other end of the inner paper tube 2, and includes a second fixing portion 41 and a second connecting portion 42. The outer diameter of the second fixing part 41 is matched with the inner diameter of the inner paper tube 2, and the side wall of the second fixing part 41 is in sealing connection with the inner wall of the inner paper tube 2; the second connecting portion 42 is integrally connected to one end of the second fixing portion 41, so that a sealed connection structure is formed between the inner paper tube 2 and the lower bottom 4.
Meanwhile, in order to form a sealed external protection structure for the outer paper tube 1, the first seal 11 and the second seal 12 at the two ends of the outer paper tube are respectively provided with an upper cover 5 and a lower cover 6, a plurality of locking devices can be used for reinforcing the upper cover 5, the lower cover 6 and the outer paper tube 1, the inner paper tube 2 is ensured not to be separated from the outer paper tube 1 due to the dead weight of the contained objects in the inner part, and the external protection layer plays a role in protecting the strength of the inner container, so the upper cover 5 and the lower cover 6 are preferably made of metal, plastic or other hard composite board materials.
Wherein, the upper cover 5 is arranged at the first seal 11 of the outer paper tube 1, and the edge of the upper cover 5 at the installation side is provided with a step structure; the diameter of the outer edge 51 of the step structure of the upper cover 5 is matched with the inner diameter of the outer paper tube 1, the diameter of the inner edge 52 of the step structure of the upper cover 5 is matched with the inner diameter of the first fixing part 31, the inner edge 52 of the step structure of the upper cover 5 is clamped into the first fixing part 31, the upper bottom 3 is fixed, the outer edge 51 of the step structure of the upper cover 5 is clamped into the outer paper tube 1, and one end of the outer paper tube 1 is sealed.
The lower cover 6 is arranged at the second seal 12 of the outer paper tube 1; the lower cover 6 has a stepped structure at the edge of the mounting side; the diameter of the outer edge 61 of the step structure of the lower cover 6 is matched with the inner diameter of the outer paper tube 1, the diameter of the inner edge 62 of the step structure of the lower cover 6 is matched with the inner diameter of the second fixing part 41, the inner edge 62 of the step structure of the lower cover 6 is clamped into the second fixing part 41, so that the lower bottom 4 is fixed, and the outer edge 61 of the step structure of the lower cover 6 is clamped into the outer paper tube 1, so that the other end of the outer paper tube 1 is sealed.
Further, the lower bottom 4 is placed at one end of the inner paper tube 2, and the second chamfer (not shown in the figure) is disposed at the connection position between the second connecting portion 42 and the second fixing portion 41, so that the lower bottom 4 is easier to be placed in the inner paper tube 2, the lower bottom 4 is attached to or heat-sealed at one end of the inner paper tube 2 by a special process, and the side wall of the second fixing portion 41 is in sealing connection with the inner wall of the inner paper tube 2, so that the tightness is good. And the lower cover 6 is arranged at the second sealing 12 of the outer paper tube 1 to support and protect the inner paper tube 2 and the lower bottom 4.
The other ends of the inner paper tube 2 and the outer paper tube 1 are respectively sealed by the upper bottom 3 and the upper cover 5, so that the leakage of printing ink, paint or coating is avoided.
When the double-layer paper tube packaging container is used for containing ink, the double-layer paper tube packaging container is matched with a pump type concentrated ink supply system, a round hole (not shown in the figure) can be formed in the first connecting portion 32 of the upper bottom 3, sealing paper (not shown in the figure) is adhered to the round hole, and when the double-layer paper tube packaging container is used, only the sealing paper is required to be torn off, the round hole is exposed, and the ink pump can conveniently pump the ink in the inner paper tube 2 from the round hole. The upper bottom 3 is placed in the other end of the inner paper tube 2, a first chamfer (not marked in the figure) is arranged at the joint of the first connecting part 32 and the first fixing part 31, the first chamfer enables the upper bottom 3 to be placed more easily, the upper bottom 3 is placed in the inner paper tube 2, the rest part of the inner paper tube 2 extends out of the outer paper tube 1, the upper bottom 3 is attached or ironed to the other end of the inner paper tube 2 by adopting a special process, the side wall of the first fixing part 31 is in sealing connection with the inner wall of the inner paper tube 2, and sealing paper is attached to the round hole, so that the inner paper tube 2 is sealed, and ink leakage is avoided. And then the upper cover 5 is mounted at the first sealing 11 of the outer paper tube 1, the inner edge 52 of the step structure of the upper cover 5 is clamped into the first fixing part 31, the upper bottom 3 is further pressed, the sealing effect is enhanced, the outer paper tube 1 forms a sealing structure, and the internal containing structure is protected.
When the double-layer paper tube packaging container is used for containing paint or coating, the upper bottom 3 is placed into the other end of the inner paper tube 2, a first chamfer is arranged at the joint of the first connecting part 32 and the first fixing part 31, the upper bottom 3 is placed into the inner paper tube 2 more easily by the first chamfer, the remaining part of the inner paper tube 2 extends out of the outer paper tube 1, the upper bottom 3 can be bonded or welded at the other end of the inner paper tube 2 by adopting a special process, so that the side wall of the first fixing part 31 is in sealing connection with the inner wall of the inner paper tube 2 to seal the inner paper tube 2, and then the upper cover 5 is mounted at the first seal 11 of the outer paper tube 1 to form a sealing structure for the outer paper tube 1 and protect the internal containing structure; the upper bottom 3 can be optionally not bonded or heat-sealed, and after being placed in the inner paper tube 2, the upper cover 5 is mounted at the first seal 11 of the outer paper tube 1, and the inner edge 52 of the step structure of the upper cover 5 is clamped into the first fixing part 31, so that the upper cover 5 is used for pressing the upper bottom 3, and the effect of sealing the inner paper tube 2 and the outer paper tube 1 is achieved.
The oxygen barrier layer is arranged on the inner wall of the inner paper tube 2, the inner side surfaces of the upper bottom 3 and the lower bottom 4, so that an oxygen-blocking closed container is formed by the inner containing structure, and oxygen molecules outside the outer paper tube 1 can be effectively prevented from entering the inner paper tube 2 to be contacted with the containing body to cause oxidization and drying. The oxygen barrier layer is composed of at least one of polyvinyl alcohol (PVA) and a nanomaterial.
Preferably, the mixing mass ratio of the nano material and PVA is 0.01% -100%. In a more preferred scheme, the mixing mass ratio of the nano material to PVA is 1% -80%. The mixing mass ratio of the nano material and PVA can be set according to the property and the preservation time of the content in the container in practical application.
PVA has certain oxygen molecule blocking performance, and is also used as film forming agent to form water soluble oxidation preventing coating on the inner wall, upper bottom and lower bottom of the inner paper cylinder. For the containers with low oxygen barrier performance requirements, PVA may also be used alone as an oxygen barrier.
The nanomaterial may include an organic nanomaterial, an inorganic nanomaterial, and a mixed material of an organic nanomaterial and an inorganic nanomaterial.
The organic nanomaterial may be in particular nanocellulose (also called cellulose crystals) or modified nanocellulose, the size of which ranges between 1nm and 100 nm. The modified nanocellulose may in particular be a hydrophobically modified nanocellulose or an oleophobically modified nanocellulose.
The inorganic nanomaterial may specifically include: nano metal oxide, nano non-metal oxide and nano metal hydroxideOne or more of nano metal sulfide, nano nitride and nano nonmetallic materials; wherein the nano metal oxide specifically comprises nano TiO 2 Nano Al 2 O 3 Nano ZrO 2 Etc.; the nano non-metal oxide can specifically comprise nano SiO 2 Etc.; the nanometer metal oxide comprises nanometer Co (OH) 2 、La(OH) 3 Etc.; the nanometer metal sulfide comprises nanometer silver sulfide, nanometer selenium sulfide and the like; the nanometer nonmetallic materials comprise nanometer B, nanometer C, nanometer Se, nanometer Si and the like.
Likewise, the inorganic nanomaterial may be a modified inorganic nanomaterial, such as a hydrophobically modified or oleophobically modified nanosilica, and the like.
The organic nano material, the inorganic nano material or the mixture of the organic nano material and the inorganic nano material can be used for blocking oxygen molecules, and the blocking performance is superior to that of PVA.
In some specific implementations, one or both of a plasticizer or an active agent may also be included in the oxygen barrier layer. The plasticizer is added, so that the flexibility of the packaging container is improved, and the problem that oxygen enters due to the fact that PVA and nano materials are fragile and easy to break under the condition of drying is solved.
In a specific example, PVA is mixed with nano silicon dioxide as an oxygen barrier layer, the mass ratio of the nano silicon dioxide to the PVA is 25%, the thickness of the oxygen barrier layer is 30 mu m, and the oxygen permeability is actually measured to be 1.5cm 3 /(m 2 ·d·Pa)。
In another specific example, PVA is mixed with nano silicon dioxide as an oxygen barrier layer, the mass ratio of the nano silicon dioxide to the PVA is 50%, the thickness of the oxygen barrier layer is 50 mu m, and the oxygen permeability is actually measured to be 0.8cm 3 /(m 2 ·d·Pa)。
In another specific example, PVA mixed with nanocellulose is adopted as an oxygen barrier layer, the mass ratio of the nanocellulose to the PVA is 40%, the thickness of the oxygen barrier layer is 50 μm, and the oxygen permeability is actually measured to be 0.6cm 3 /(m 2 ·d·Pa)。
In yet another specific example, PVA is used in combination with sorbitol as the oxygen barrier, wherein sorbitol is preferably added in an amount of 20phr, at which the PVA is optimally plasticized.
The outer paper tube 1 may also be provided with a waterproof layer (not shown in the figure) for blocking water molecules from entering the waterproof layer through the waterproof layer. The waterproof layer can be made of waterproof film material, and the waterproof layer material can be any one or more of Polyethylene (PE), biaxially oriented polypropylene film (BOPP), polyethylene terephthalate (PET) and cast polypropylene film (CPP).
The double-layer paper tube packaging container can be used for packaging ink, paint or coating.
As can be seen from fig. 1, the double-layer paper tube packaging container according to the embodiment of the invention has an overall structure. One way of fixing the upper cover 5 and the lower cover 6 will be described with reference to fig. 2 and 3.
Fig. 2 and fig. 3 are a schematic top view and a schematic front view of a double-layer paper tube packaging container according to an embodiment of the present invention. The following is presented in conjunction with fig. 2 and 3:
the upper cover 5 and the lower cover 6 comprise a cover body 9, a rotating part 7 and a telescopic fixed rod 8, wherein the rotating part 7 is arranged above the cover body 9, the telescopic fixed rod 8 is arranged between the cover body 9 and the rotating part 7, one end of the telescopic fixed rod 8 is connected with the rotating part 7, and rotates on the cover body 9 along with the rotating part 7, and the other end of the telescopic fixed rod 8 extends out of the cover body 9; the outer paper tube 1 is provided with a telescopic hole (not shown in the figure), and the position of the telescopic hole corresponds to the telescopic fixed rod 8.
When the rotary part 7 is in use, the rotary part 7 rotates around the axle center of the cover body 9 to push the telescopic fixing rod 8 to extend out of the outer paper tube 1 through the telescopic hole on the outer paper tube 1, so that the upper cover 5 and the lower cover 6 are fixed on the outer paper tube 1.
The above describes the overall structure of the double-layer paper tube packaging container and the connection relationship between the components provided in this embodiment, and the working principle of the double-layer paper tube packaging container is described in detail below with reference to fig. 1, 2 and 3.
In this embodiment, when being used for holding printing ink, first place the bottom 4 to the one end of interior fiber container 2, the design of second chamfer makes the bottom 4 put into interior fiber container 2 more easily, then adopt special technology laminating or scald to close on interior fiber container 2 for the lateral wall of second fixed part 41 and the inner wall sealing connection of interior fiber container 2, place interior fiber container 2 into outer fiber container 1 again, interior fiber container 2 and outer fiber container 1 closely laminate, and be connected with the one end of bottom 4 and stretch into inside outer fiber container 1, leave the position of lower cover 6, the other end of interior fiber container 2 stretches out outside outer fiber container 1. After that, the lower cover 6 is fixed at the second sealing 12 of the outer paper tube 1, the inner edge 62 of the step structure of the lower cover 6 is clamped into the second fixing part 41, the outer edge 61 of the step structure of the lower cover 6 is just embedded into the outer paper tube 1, and the rotating part 7 is rotated, so that the telescopic fixing rod 8 extends out of the outer paper tube 1 through the telescopic hole on the outer paper tube 1, and the lower cover 6 is fixed on the outer paper tube 1, thereby sealing one ends of the outer paper tube 1 and the inner paper tube 2, and completing the assembly operation before filling. Ink is filled into the inner paper tube 2 from the unsealed ends of the outer paper tube 1 and the inner paper tube 2, and in order to seal the other ends, care should be taken that the filling amount cannot exceed a predetermined value during the filling process. After filling, the upper bottom 3 is placed inside the other end of the inner paper tube 2, the inner paper tube 2 is bonded or glued by adopting a special process, sealing paper is adhered to the round hole on the first connecting part 32, ink is sealed, the arrangement of the oxygen isolation layer and the waterproof layer not only avoids ink leakage, but also prevents the ink from being oxidized and dried, then the upper cover 5 is installed at the first sealing 11 of the outer paper tube 1, as the inner paper tube 2 extends out of the first sealing 11 of the outer paper tube 1, during installation, the inner edge 52 of the step structure of the upper cover 5 is clamped into the first fixing part 31, the outer edge 51 of the step structure of the upper cover 5 is clamped into the inner paper tube 2, and the rotating part 7 is rotated, so that the telescopic fixing rod 8 extends out of the outer paper tube 1 through the telescopic hole on the outer paper tube 1, the upper cover 5 is fixed on the outer paper tube 1, the sealing performance is better, the outer paper tube 1 forms a sealing structure, and the internal containing structure is protected. When the ink pump is used, the upper cover 5 is only required to be taken out, the sealing paper is taken down from the first connecting part 32, then the ink pump is sleeved on the outer paper cylinder 1, the output pipeline of the ink pump is directly connected to equipment with an ink jet nozzle, so that the ink in the inner paper cylinder 2 is pumped out, the upper bottom 3 is continuously close to one side of the lower bottom 4 under the action force of the ink pump in the ink pumping out process, the use is convenient, and the waste of the ink is reduced as much as possible. After the ink in the inner paper tube 2 is used up, the packaging container is taken down from the ink pump, then the inner paper tube 2 is deformed by the drawing device and is drawn out from the outer paper tube 1, and although a small amount of ink remains in the inner paper tube 2, the ink does not permeate into the paper material, and the paper remains a small amount of ink to meet the normal processing requirements in the waste paper recycling system, so that the inner paper tube 2 can be independently subjected to environmental protection processing, and the outer paper tube 1 separated from the inner paper tube 2 can be recycled.
In this embodiment, when being used for accommodating paint or coating, the bottom 4 is placed at one end of the inner paper tube 2, the inner paper tube 2 is attached or ironed on the inner paper tube 2 by adopting a special process, then the inner paper tube 2 is placed in the outer paper tube 1, the inner paper tube 2 is tightly attached to the outer paper tube 1, one end connected with the bottom 4 stretches into the outer paper tube 1, the position of the bottom cover 6 is reserved, and the other end of the inner paper tube 2 stretches out of the outer paper tube 1. After that, the lower cover 6 is fixed at the second seal 12 of the outer paper tube 1, the inner edge 62 of the step structure of the lower cover 6 is clamped into the second fixing part 41, the outer edge 61 of the step structure of the lower cover 6 is just embedded into the outer paper tube 1, and one ends of the outer paper tube 1 and the inner paper tube 2 are sealed. Paint or coating is filled into the inner paper tube 2 from the unsealed ends of the outer paper tube 1 and the inner paper tube 2, and in order to seal the other ends, care should be taken that the filling amount cannot exceed a predetermined value during the filling process. After filling, the upper bottom 3 may be bonded to the inner paper tube 2, or may be unbonded. When the bonding is carried out, the upper bottom 3 is placed in the other end of the inner paper tube 2, the inner paper tube 2 is bonded or ironed by adopting a special process, then the upper cover 5 is installed at the first sealing 11 of the outer paper tube 1, and the inner edge 52 of the step structure of the upper cover 5 is clamped into the first fixing part 31 when the inner paper tube 2 extends out of the first sealing 11 of the outer paper tube 1, and the outer edge 51 of the step structure of the upper cover 5 is clamped into the inner paper tube 2, so that the sealing effect is enhanced, the outer paper tube 1 forms a sealing structure, and the internal containing structure is protected; when not bonding, place the upper bottom 3 to the inside of the other end of interior fiber container 2, upper cover 5 installs the first department of sealing 11 department of outer fiber container 1 to the step structure's of upper cover 5 inner edge 52 card goes into in the first fixed part 31, utilizes upper cover 5 to press together upper bottom 3, thereby fixes upper bottom 3, sealed interior fiber container 2 and outer fiber container 1. When in use, the upper cover 5 and the upper bottom 3 can be used only by taking out the upper cover and the upper bottom in sequence. When the containing object in the inner paper tube 2 is used, the inner paper tube 2 is separated from the outer paper tube 1 by the drawing device, the inner paper tube 2 is independently subjected to environmental protection treatment, and the outer paper tube 1 is recycled.
The double-layer paper tube packaging container provided by the embodiment of the invention adopts a double-sleeve paper tube structure, the outer part adopts a high-strength paper tube with higher thickness as an outer protective layer, the inner part adopts a soft and easily-deformed thin paper tube, the inner surface of the thin paper tube is coated with an oxygen-insulating layer and a waterproof layer, and the inner surface and the outer surface of the thin paper tube are tightly adhered to each other as a containing layer, so that the weight is light, the transportation cost is reduced, the deformation of the inner paper tube can be extracted from the outer paper tube after the packaging container is used, the outer paper tube can be independently subjected to environmental protection treatment, the outer paper tube can be repeatedly used, the problem that the iron barrel package is difficult to process is solved, and the environmental protection recovery is realized.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. A double-layer paper tube packaging container, characterized in that the double-layer paper tube packaging container comprises:
the thickness of the outer paper tube is larger than 2mm; the two ends of the outer paper tube are provided with a first seal and a second seal;
the inner paper tube is arranged in the outer paper tube; the thickness of the inner paper tube is smaller than 2mm; the outer side of the inner paper tube is provided with a drawing device for assisting the separation of the inner paper tube and the outer paper tube;
the upper bottom is arranged in one end of the inner paper tube; the upper bottom comprises a first fixing part and a first connecting part;
the outer diameter of the first fixing part is matched with the inner diameter of the inner paper tube, and the side wall of the first fixing part is in sealing connection with the inner wall of the inner paper tube;
the first connecting part is integrally connected with one end of the first fixing part, so that a closed connecting structure is formed between the inner paper tube and the upper bottom;
the lower bottom is arranged at the other end of the inner paper tube; the lower bottom comprises a second fixing part and a second connecting part;
the outer diameter of the second fixing part is matched with the inner diameter of the inner paper tube, and the side wall of the second fixing part is in sealing connection with the inner wall of the inner paper tube;
the second connecting part is integrally connected with one end of the second fixing part, so that a closed connecting structure is formed between the inner paper tube and the lower bottom;
the upper cover is arranged at the first sealing part of the outer paper tube; the upper cover is provided with a step structure at the edge of the installation side; the outer edge diameter of the step structure of the upper cover is matched with the inner diameter of the outer paper tube, and the inner edge diameter of the step structure of the upper cover is matched with the inner diameter of the first fixing part;
the lower cover is arranged at the second sealing part of the outer paper tube; the lower cover is provided with a step structure at the edge of the installation side; the outer edge diameter of the step structure of the lower cover is matched with the inner diameter of the outer paper tube, and the inner edge diameter of the step structure of the lower cover is matched with the inner diameter of the second fixing part;
wherein, the upper cover and the lower cover are made of metal, plastic or other hard composite board materials; the upper cover and the lower cover comprise a cover body, a rotating part and a telescopic fixed rod, the rotating part is arranged above the cover body, the telescopic fixed rod is arranged between the cover body and the rotating part, one end of the telescopic fixed rod is connected with the rotating part and rotates on the cover body along with the rotating part, and the other end of the telescopic fixed rod extends out of the cover body; the outer paper tube is provided with a telescopic hole, and the position of the telescopic hole corresponds to the telescopic fixed rod;
the oxygen isolation layer is arranged on the inner wall of the inner paper tube, the inner side surfaces of the upper bottom and the lower bottom; the oxygen barrier layer at least comprises polyvinyl alcohol PVA and/or nano materials.
2. The double-layer paper tube packaging container according to claim 1, wherein an outer diameter of the inner paper tube is matched with an inner diameter of the outer paper tube.
3. The double-layer paper tube packaging container according to claim 1, wherein the upper bottom and the lower bottom are made of paper materials, the upper bottom is attached or iron-bonded in one end of the inner paper tube, and the lower bottom is attached or iron-bonded in the other end of the inner paper tube.
4. The double-layer paper tube packaging container according to claim 1, wherein the oxygen barrier layer further comprises a plasticizer and/or an active agent.
5. The double-layer paper tube packaging container according to claim 1, wherein the outer paper tube is provided with a waterproof layer, the waterproof layer is made of a waterproof film material, and the waterproof layer material comprises any one or more of polyethylene PE, biaxially oriented polypropylene film BOPP, polyethylene terephthalate PET and cast polypropylene film CPP.
6. The double-layer paper tube packaging container according to claim 1, wherein a first chamfer is arranged at the joint of the first connecting part and the first fixing part; and a second chamfer is arranged at the joint of the second connecting part and the second fixing part.
7. The double-layer paper tube packaging container according to claim 1, wherein a round hole is formed in the first connecting portion of the upper bottom, and sealing paper is adhered to the round hole.
8. The double-layer paper tube packaging container according to claim 1, wherein the container is used for packaging of ink, paint or coating.
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| CN201710910857.0A CN107554932B (en) | 2017-09-29 | 2017-09-29 | Double-layer paper tube packaging container |
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| CN201710910857.0A CN107554932B (en) | 2017-09-29 | 2017-09-29 | Double-layer paper tube packaging container |
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| CN107554932B true CN107554932B (en) | 2023-10-31 |
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| CN107554932A (en) | 2018-01-09 |
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