CN111099152A

CN111099152A - Environment-friendly easily-recycled instant food package and application thereof in instant noodle packaging

Info

Publication number: CN111099152A
Application number: CN201911123118.2A
Authority: CN
Inventors: 钟云飞; 胡垚坚; 付芦静; 游诗英
Original assignee: Hunan University of Technology
Current assignee: Hunan University of Technology
Priority date: 2019-11-16
Filing date: 2019-11-16
Publication date: 2020-05-05

Abstract

The invention discloses an environment-friendly and easily-recycled instant food package and application thereof in the aspect of instant noodle packaging. According to the invention, the modified microfibrillated cellulose aerogel is applied to the main body material of the package as a barrier coating material, and meanwhile, the material, the gluing mode and the gluing structure of the sealing cover provided with the aluminum foil are scientifically and integrally designed, so that the aluminum foil can be simply and quickly separated and recycled by the force of both hands of a user, the aluminum and the plastic layer can be separated after the user uses the package, the increase of the recovery cost caused by the recovery methods such as a mechanical method and a chemical method in the existing aluminum-plastic recycling process is avoided, the sewage discharge is reduced, and the requirements of garbage classification are met. The instant noodle package has the advantages of simple and convenient use, renewable materials, easy recycling, environmental friendliness and suitability for industrial production.

Description

Environment-friendly easily-recycled instant food package and application thereof in instant noodle packaging

Technical Field

The invention relates to the technical field of instant food packaging, in particular to an environment-friendly easy-to-recycle instant food package and application thereof in the aspect of instant noodle packaging.

Background

The existing instant food is receiving more and more attention and is popular among consumers. The main material of the food package is mainly a composite material of a paperboard and a PE film, and the PE film is used for realizing the functions of oil resistance and water resistance, but the PE film is a high polymer material which is difficult to naturally degrade, so that the environment is not favorable, and after the paperboard and the PE film are compounded, the paperboard and the PE film are not easy to naturally separate, so that the recycling cost of the composite material is increased, and the sustainable development is not favorable; meanwhile, the convenient food package needs a sealed or heat-insulating box cover, the main body material of the box cover mainly adopts a multi-layer composite material which takes aluminum foil as a main barrier material, the main components of the box cover comprise three or more different combinations of an aluminum foil layer, a PE layer, a PET layer, a paper layer and an adhesive layer, the box cover mainly has the functions of sealing the box opening and storing contents, such as the package of foods of instant noodles and the like, because the composite material of the box cover directly has strong adhesive force under the adhesive effect of the adhesive layer and is difficult to separate, therefore, when recycling the aluminum foil layer, the PE layer, the PET layer and the paper layer, the recycled bowl cover is generally recycled by adopting different separation methods such as a chemical method, a mechanical method and the like to process the recycled bowl cover, the recovery cost is increased, and especially if the chemical separation method is not properly treated, a lot of sewage is discharged, which is unfavorable for the environment.

Taking instant noodles as an example, instant noodles are popular with consumers because of convenience in eating and various tastes, wherein instant noodles bowls are one of important food in life because of portability, and in recent years, dry-mixed instant noodles are popular with consumers because of unique taste along with the continuous renovation of the variety of instant noodles.

But the instant noodle among the prior art mainly by instant noodle bowl splendid attire when the packing, and sealed by the bowl lid, and wrap up the plastic envelope membrane outside whole instant noodle bowl packing, prior art scheme has its certain advantage when using, still have the not enough that need improve, mainly have above-mentioned combined material that adopts cardboard compound PE membrane to lead to the difficult natural separation of cardboard and PE membrane, recycle cost increases, be unfavorable for sustainable development's problem, and the bowl lid is in the outstanding problem such as recovery cost increase when retrieving the aluminium foil layer, the PE layer, the PET layer, the ply, unfavorable environment.

Meanwhile, the bowl lid among the prior art is when sealing up instant noodle bowl mouth, in order to guarantee the leakproofness, generally adopt whole combined material to seal, consequently need to tear off a part bowl lid when using just can add hot water in the bowl, especially to the face of mixing that needs to pour hot water, this kind of mode is very inconvenient, consequently, set up half through window through the one side at the bowl lid among the prior art, can be when pouring inside hot water through the fork of appendant, will set up half through window on the bowl lid and stab, and pour inside hot water from the window that stabs is more convenient, but the fragment that can have the bowl lid when stabbing falls into the bowl, be difficult to stab half through window scheduling problem, thereby arouse unfavorable consumption experience.

Disclosure of Invention

The invention aims to provide an environment-friendly and easily-recycled instant food package aiming at the defects of the existing instant food packaging technology, and the instant food package is more environment-friendly and easier to recycle by improving the main material, using an environment-friendly material and optimizing an adhesive structure.

Another object of the invention is to apply the package to the packaging of instant noodles and bowls. Especially applied to the aspect of dry mixing instant noodle packaging, so that the user experience of the instant noodles is improved.

The purpose of the invention is realized by the following technical scheme:

an environment-friendly and easily-recycled instant food package comprises a box body and a box cover, wherein the main body material of the box body is obtained by coating a paper base material or a pulp molding material with a barrier coating material, and the barrier coating material is modified microfibrillated cellulose aerogel; the box cover comprises a first stripping layer, an adhesive layer and a second stripping layer, the first stripping layer and the second stripping layer are bonded through the adhesive layer, the main material of the first stripping layer is obtained by coating a paper base material or a degradable film base material on a barrier coating material, and the barrier coating material is modified microfibrillated cellulose aerogel; the second stripping layer is aluminum foil.

According to the invention, the modified microfibrillated cellulose aerogel is applied to the main body material of the package as a barrier coating material, and meanwhile, the material, the gluing mode and the gluing structure of the sealing cover provided with the aluminum foil are scientifically and integrally designed, so that the aluminum foil can be simply and quickly separated and recycled by the force of both hands of a user, the aluminum and the plastic layer can be separated after the user uses the package, the increase of the recovery cost caused by the recovery methods such as a mechanical method and a chemical method in the existing aluminum-plastic recycling process is avoided, the sewage discharge is reduced, and the requirements of garbage classification are met.

The barrier coating has hydrophobic, oleophobic and oxygen-resistant functions. Preferably, the thickness of the main material barrier coating of the box body is 30-100 mu m.

Further, the barrier coating is coated on the paper-based base material through an anilox roller, and the mesh number of the anilox roller is 100-200 meshes.

Furthermore, the paper base material of the box body is formed by compounding a single paper base material or a plurality of layers of different paper base materials; the gram weight of the paper base material is 220-350 g/m²。

Preferably, the thickness of the main material barrier coating of the first stripping layer is 0.1-1 μm.

Further, the main material of the first stripping layer is obtained by coating a paper substrate with a barrier coating material, and the gram weight of the paper substrate is 80-160 g/m²The barrier coating is coated on the paper-based base material through an anilox roller, and the mesh number of the anilox roller is 100-200 meshes.

Further, the base material of the box body is a pulp molding material, and the barrier coating is formed by spraying modified microfibrillated cellulose aerogel on the pulp molding surface through an air pressure spray gun.

Further, the main material of the first stripping layer (21) is prepared by coating a barrier coating material with a degradable film base material, the thickness of the degradable film base is 20-100 mu m, the barrier coating is coated on the degradable film base through an anilox roller, and the mesh number of the anilox roller is 200-800 meshes.

Further, the degradable film-based material is any one of a PLA film or a starch film.

The environment-friendly and easily-recycled instant food package can be well applied to the aspect of instant noodle packaging. The box body is correspondingly an instant noodle bowl, and the box cover is correspondingly a liquid-leaking bowl cover; but be equipped with a plurality of weeping mouth on the second peel ply of weeping bowl lid, the weeping mouth is formed by the incision that runs through the second peel ply, but the edge of weeping bowl lid is equipped with the piece of lifting up that outwards extends.

When being applied to instant noodle packaging, the box body and the box cover can adopt sealing connection and are bonded through sealant.

Further, the sealant is hot-melt glue.

Further, the shrink-wrap film is a PLA film.

Further, but weeping bowl lid top-down includes first peel off layer, gluing layer and second peel off layer in proper order, first peel off layer and second peel off layer bind through the gluing layer, the gluing layer is divided into gluing layer one region and gluing layer two regions according to the difference of peel force, the peel force in gluing layer one region is greater than the peel force in gluing layer two regions.

Further, instant noodle bowl includes at the bottom of bowl mouth, bowl body and the bowl, bowl mouth department is equipped with the flange, flange and bowl mouth junction are circular-arcly, the bowl body outside is equipped with printing picture and text and protective layer, the protective layer covers on the printing picture and text, bowl body inboard is equipped with the separation coating.

Preferably, the notch is a transverse notch, and a protruding part is arranged at the opening of the transverse notch;

further, there may be more than one lift tab. The number of the lifting pieces is preferably 2, and the lifting pieces comprise a first lifting piece and a second lifting piece which are symmetrically distributed on two sides of the bowl cover capable of leaking liquid;

the flange and the liquid-leakable bowl cover can be sealed by sealing methods known in the art. Optionally adopting sealant to bond, and sealing the instant noodle bowl and the liquid leaking bowl cover by a shrink packaging film.

And the first stripping layer is sequentially provided with printing pictures and texts and a protective layer.

Further, the protective layer is transparent gloss oil.

Further, the instant noodle bowl is a paper bowl or a pulp molding bowl. According to the scheme of the paper bowl, the bowl body is formed by connecting and combining fan-shaped paper boards through an adhesive, further, the adhesive is modified microfibrillated cellulose aerogel, and the bottom of the bowl is formed by connecting and combining the punched paper boards with the lower part of the bowl body through the adhesive; the modified microfibrillated cellulose aerogel is coated on the surface of a paperboard through an anilox roller, and the mesh number of the anilox roller is 100-200 meshes. According to the scheme of the paper pulp molding bowl, the flange, the bowl body and the bowl bottom are integrated, and paper pulp fibers are adsorbed by a forming die and are subjected to dehydration, hot pressing, drying, blanking and forming; the modified microfibrillated cellulose aerogel was sprayed onto the pulp molding surface by an air pressure spray gun.

Further, the shape of the instant noodle bowl can be a cylinder-like shape, a cone-like shape or a cuboid-like shape.

The modified microfibrillated cellulose aerogel used in the invention is obtained by drying microfibrillated cellulose turbid liquid in vacuum to obtain aerogel, and then modifying the obtained aerogel by using trichlorosilane, wherein the modification method refers to the prior art.

Further, the flange upper surface is provided with knurling.

Further, the peeling force of the adhesive layer in the first area of the adhesive layer is 5-7N/15 mm, and the peeling force of the adhesive layer in the second area of the adhesive layer is 1-3N/15 mm.

Furthermore, the coating area of the first adhesive layer is an annular area of the first uncovering piece and the edge of the bowl cover, and the coating area of one side of the annular area close to the second uncovering piece is a half of the annular area, a transverse cut and a protruding part; the second adhesive layer is coated on the rest area.

Furthermore, the thickness of the second stripping layer aluminum foil is 2-20 μm.

Compared with the prior art, the invention has the following beneficial effects:

the invention creatively replaces PE spraying film with modified microfibrillated cellulose aerogel, realizes the hydrophobic, oleophobic and oxygen resistant functions of convenient food packaging, is easy to naturally degrade and is more environment-friendly. Meanwhile, the microfibrillated cellulose is derived from plant fiber and can be regenerated, after the microfibrillated cellulose is coated on the surface of a paper bowl, the used paper bowl can be recycled without being separated, and the paper film-combined barrier layer can greatly reduce the recycling cost compared with the paper bowl coated with a PE (polyethylene) film and a degradable film, but the paper bowl is still required to be separated during recycling to realize favorable recycling of the paper bowl, so that compared with the paper bowl coated with the PE film and the degradable film, the modified microfibrillated cellulose aerogel coating paper bowl greatly reduces the recycling cost and better accords with the sustainable development direction, moreover, the invention scientifically designs a box cover material box structure with an aluminum foil layer simultaneously, and through the improvement of materials, an adhesive mode and an adhesive structure, the box cover structure is changed into a first stripping layer, an adhesive layer and a second stripping layer which is an aluminum foil, and under the condition of not requiring the assistance of a mechanical method, a chemical method and other separation recycling methods, directly can separate the aluminium foil layer with the hand, at the present of the categorised recovery of rubbish for the aluminium foil is retrieved convenient and fast more, and the recovery process is environmental protection more, greatly reduced aluminium foil recycle cost.

Meanwhile, the bowl cover adopts the paper base material or the degradable film base material coated with the barrier coating as the first stripping layer to form the bowl cover structure of the first stripping layer/adhesive layer/aluminum foil layer, particularly a protective layer/printing layer/barrier material coating/paper layer or a film layer/adhesive layer/aluminum foil layer.

Further, on the basis of the improvement of the materials, the gluing mode and the gluing structure, the bowl cover is provided with the liquid leakage port and the new lifting piece structure, when a consumer lifts the first lifting piece at the second lifting piece, the notch arranged on the second lifting piece is pulled open along with the lifting of the first lifting piece under the action of strong adhesion, but the lifting piece II cannot be separated from the bowl cover to form the liquid leakage port capable of leaking liquid, and no fragment of the bowl cover is generated, so that hot water in the instant noodle bowl can be filtered conveniently. Meanwhile, the large annular high-viscosity adhesive layer area of the bowl cover seals the notch in the bowl cover, and the problem that the sealing performance of the whole bowl cover is reduced due to the existence of the notch is avoided.

The present invention has a wide and excellent application to convenience food or take-away packaging including, but not limited to, hot meals, soup or water mixes, various beverages, and the like, which need to be sealed for take-away. Under the scheme of combining the liquid leakage port on the basis of the improvement of the materials, the gluing mode and the gluing structure, the liquid leakage port can be well applied to the requirement situation that soup and other food materials need to be poured in an isolation mode, such as fast-food hot dry noodles, dry mixed noodles, red date and Chinese wolfberry health-preserving drinks and the like, and has wide application prospect and good popularization and application performance. The instant noodle package has the advantages of simple and convenient use, renewable materials, easy recycling, environmental friendliness and suitability for industrial production.

Drawings

Fig. 1 is a partial structural schematic view of a bowl body of an instant noodle bowl according to a first embodiment.

Fig. 2 is a schematic overall structure diagram of a paper bowl of an instant noodle bowl according to the first embodiment.

Fig. 3a is a schematic view of a stacking structure of the liquid-leaking bowl cover according to the first embodiment.

Fig. 3b is a schematic view of a stacking structure of the liquid-leaking bowl cover according to the first embodiment.

Fig. 4 is a top view of the liquid-leaking bowl cover according to the first embodiment.

Fig. 5 is a sectional view of the liquid-leaking bowl cover according to the first embodiment taken along the direction of a-a.

Fig. 6 is a sectional view of the liquid-leaking bowl cover according to the first embodiment along the direction B-B.

Fig. 7 is a schematic cross-sectional view taken along the direction of lifting the liquid leaking port and the lifting effect of the liquid leaking bowl cover according to the first embodiment.

FIG. 8 is a schematic cross-sectional view taken along the direction B-B of the lifting effect of the liquid-leaking hole of the liquid-leaking bowl cover according to the first embodiment.

Fig. 9 is a schematic view of the overall structure effect of the instant noodle package according to the first embodiment.

Fig. 10 is a schematic view of the bowl cover of the instant noodle package according to the first embodiment, which is used for injecting hot water and partially peeling off the liquid leakage port of the bowl cover to pour out the hot water.

Fig. 11 is a top view of the liquid-leaking bowl cover according to the second embodiment.

Fig. 12 is a sectional view of the liquid-leaking bowl cover according to the second embodiment taken along the direction of line a-a.

Fig. 13 is a schematic cross-sectional view of the direction and effect of lifting the liquid leakage opening of the liquid-leaking bowl cover according to the second embodiment.

Fig. 14 is a schematic view of the bowl cover of the instant noodle package according to the second embodiment, which is filled with hot water by unsealing and pouring out hot water by partially peeling the liquid leakage port of the bowl cover.

Fig. 15 is a top view of the liquid-leaking bowl cover according to the third embodiment.

Fig. 16 is a top view of the liquid-leaking bowl cover according to the fourth embodiment.

Fig. 17 is an overall structural schematic diagram of the pulp molding bowl of the fourth embodiment of the instant noodle bowl.

In the figure: 1 is instant noodle bowl, 101 is paperboard, 102 is barrier coating, 103 is printing picture and text, 104 is protective layer, 105 is adhesive, 106 knurls, 11 is bowl mouth flange, 12 is bowl body, 13 is bowl bottom, 2 is bowl cover, 21 is first stripping layer, 211 starch film layer, 212 is barrier coating, 213 is printing picture and text, 214 is protective layer, 22 is adhesive layer, 221 is adhesive layer one, 222 is adhesive layer two, 23 is second stripping layer, 24 uncovering piece one, 25 is uncovering piece two, 251 is second transverse cut, 26 is liquid leakage port, 261 is transverse cut, 262 is protruding part, 3 is sealant.

Detailed Description

For the convenience of understanding, the following description is only provided by way of example of the convenience package, and the invention is not limited thereto. The present invention will be described more fully and in detail with reference to the following examples, which are intended to be included within the scope of the present invention.

Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.

Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.

Example 1

As shown in fig. 1 to 10, the present embodiment provides an environment-friendly and easily-recycled instant noodle packaging bowl 1, which comprises a bowl body 12 and a bowl bottom 13: a flange 11 is arranged at the opening of the bowl body, the bowl opening flange 11 is connected and combined with the upper part of the bowl body 12, and the connecting and combining part is in an arc shape; the outer side of the bowl body 12, which is not in contact with food, is provided with a printing image-text 103 and a protective layer 104, the protective layer 104 covers the printing image-text 103, and the inner side of the bowl body 12, which is in contact with food, is provided with a barrier coating 102, so that the functions of oil resistance, water resistance, oxygen resistance and temperature resistance are realized.

Specifically, as shown in fig. 1, a layer of barrier coating 102 is uniformly coated on the side of the paper board 101 contacting with food, so as to realize the functions of oil resistance, water resistance, oxygen resistance and temperature resistance. This separation coating 102 is modified microfibrillated cellulose aerogel, and this aerogel is by behind the microfibrillated cellulose turbid liquid vacuum drying obtain aerogel, reuse trichlorosilane modifies the gained to gained aerogel, makes it have super hydrophobic oleophobic nature, and it still has fine separation nature simultaneously, greatly reduced the transmissivity of cardboard 101 to the air, and strengthened the intensity of cardboard 101. Because the microfibrillated cellulose is derived from fibers of raw materials such as wood, straws, soybean hulls, bagasse and the like, belongs to renewable resources, can be biodegraded in natural environment, is used for replacing PE (polyethylene) film coating in the prior technical scheme to achieve better environmental protection, and meanwhile, after the paperboard 101 is coated by the barrier coating 102, the waste is favorably recycled, and because the PE film coating is not adopted, the process steps of paper and plastic separation are omitted when the paperboard 101 is recycled, so that the recycling, sorting and utilization cost is greatly reduced. The other side of the paper board 101 coated with the barrier coating 102, i.e. the side not in contact with food, is then printed with a printed image 103 and a protective layer 104, the wear resistance and the service life of the printed image 103 are improved by the protective layer 104, and the protective layer 104 in this embodiment is transparent gloss oil.

As shown in fig. 2, the paper board 101 printed with pictures and texts and coated with the barrier coating 102 is die-cut into a fan shape according to the design size, and is connected and combined by an adhesive 105 (the adhesive position is not shown in the figure), so that the bowl body 12 is formed by facing one side of the barrier coating 102 into the bowl, the bowl mouth flange 11 is formed at the upper part of the bowl body 12, and a reticulate knurl 106 is formed on the upper surface of the bowl mouth flange 11 by a knurling process to improve the roughness of the upper surface of the bowl mouth flange 11, which is beneficial to the adhesion of the sealant 3, then the paper board 101 which is not printed with pictures and texts and coated with the barrier coating 102 is punched to form a wafer, and is connected and combined with the lower part of the bowl.

As shown in fig. 3a, 3b and 4, the embodiment further provides a liquid-leaking bowl cover 2, the size of the bowl cover 2 is matched with the flange 11, a first lifting piece 24 and a second lifting piece 25 extending outwards are arranged on the edge of the bowl cover 2, the first lifting piece 24 and the second lifting piece 25 are symmetrically distributed on two sides of the liquid-leaking bowl cover 2, and specifically, the first lifting piece 24 and the second lifting piece 25 are distributed on the symmetry axis or diagonal line of the bowl cover 2. The bowl cover 2 sequentially comprises a first stripping layer 21, an adhesive layer 22 and a second stripping layer 23 from top to bottom; the first peeling layer 21 includes: a protective layer 214, a printing image and text 213, a barrier coating 212 and a starch film layer 211; the second stripping layer is provided with a plurality of liquid leakage openings 26, the liquid leakage openings 26 are formed by linear type transverse cuts 261 penetrating through the second stripping layer 23, and the openings of the transverse cuts are provided with protrusions 262; the adhesive layer 22 consists of a first adhesive layer 221 and a second adhesive layer 222, wherein the coating area of the first adhesive layer 221 is a first uncovering piece 24, the annular area of the edge of the bowl cover is a half of the area of the annular area, and the coating area of one side of the annular area, which is close to a second uncovering piece 25, is a transverse cut 261 and a protruding part 262; the second adhesive layer is coated on the other area.

In this embodiment, the first release layer is prepared by a surface printing process or an inner printing process, the barrier coating layer 212 is coated and bonded on the surface of the paper base or the film base, the protective layer 214 and the printed pattern 213 are transferred to the surface of the paper base or the film base by the printing process, and no additional adhesive is required between layers. Specifically, as shown in fig. 3a, a surface printing process is adopted on a starch film 211 which is easily naturally degraded, a barrier coating 212 is coated on the upper surface of the starch film 211, the barrier coating 212 is also a modified microfibrillated cellulose aerogel, the surface strength of the starch film 211 is enhanced, simultaneously, the oxygen and gas barrier properties of the starch film 211 are improved, then, printing patterns 213 and coating a protective layer 214 are printed on the barrier coating 212 to enhance the wear resistance and the service life of the printing patterns 213, so as to obtain a first peeling layer 21, then, an adhesive layer 22 is coated on the first peeling layer 21, and the adhesive layer 22 and a second peeling layer 23 are adhered together to form a main body film material of the liquid-leaking bowl cover.

As shown in fig. 3b, a first peeling layer 21 is formed by a back printing process, and then an adhesive layer 22 is coated on the first peeling layer 21, and the adhesive layer 22 and a second peeling layer 23 are bonded together to form a main body film material of the liquid-leaking bowl cover, which has the same functionality as the main body film material of the liquid-leaking bowl cover shown in fig. 3 a.

The adhesive layer in this embodiment can adopt commercially available glue to prepare and form, can adjust the peel force on adhesive layer through the glue that adopts different sticknesses, and wherein the peel force on adhesive layer one is 5~7N 15mm, and the peel force on adhesive layer two is 1~3N 15mm, and the peel force on adhesive layer one 221 is greater than the peel force on adhesive layer two 222, forms adhesive layer 22 jointly, again with second peel ply 23, aluminium foil layer promptly, closely bonds together. The first adhesive layer 221 has strong peeling performance, so that the first peeling layer 21 and the second peeling layer 23 can be peeled off only by achieving destructive peeling force in the area coated with the first adhesive layer, and the area coated with the second adhesive layer 222 only has weak peeling performance, so that the first peeling layer 21 and the second peeling layer 23 can be completely peeled off only by needing smaller peeling force in the area coated with the second adhesive layer, for example, the two peeling layers can be completely peeled off by using both hands, so that the simple, fast and convenient separation and recycling of aluminum and plastic are realized, a consumer can separate the aluminum and plastic layers after using the aluminum and plastic layers, the increase of the recycling cost caused by recycling methods such as a mechanical method and a chemical method in the existing aluminum and plastic recycling process is avoided, and particularly, if the chemical separation method is improperly treated, much sewage is discharged, and is unfavorable to the environment and even unavailable.

As shown in fig. 4, the bowl cover 2 having the first peeling layer 21, the adhesive layer 22 and the second peeling layer 23 is through-die cut according to the designed shape and size of the bowl cover 2 to form the bowl cover 2 having the first peeling sheet 24 and the second peeling sheet 25, and through-die cuts are formed in the second peeling layer 23, i.e., the aluminum foil layer, through cross cuts close to the second peeling sheet 25, while no cross cuts are formed in the area of the first peeling layer 21, so that the bowl cover 2 still has good sealability and barrier property under the condition of the first adhesive layer 221 having strong adhesiveness.

As shown in fig. 5 to 8, when the first peeling layer 21 at the second peeling layer 25 is peeled off by a large external force, such as a force applied by two hands, the transverse cut 261 penetrates through the second peeling layer 23, i.e., the aluminum foil layer, so that the transverse cut is separated vertically, the second peeling layer 23 facing the first peeling layer 24 of the transverse cut 261 is pulled upward together with the first peeling layer 21 under the action of the first highly adhesive layer 221, the second peeling layer 23 facing the second peeling layer 25 of the transverse cut 261 is separated from the first peeling layer 21, and when the first peeling layer 21 and the second peeling layer 23 are separated to the protruding portion 262 on the transverse cut, the first peeling layer 21 and the second peeling layer 23 are difficult to be peeled off continuously and stopped under the action of the first adhesive layer 221, so that the liquid leakage port 26 is formed in the transverse cut. In the embodiment, the size and the shape of the transverse cut are not strictly limited, so that soup can be conveniently filtered out, and noodles and foodstuff can be isolated.

As shown in fig. 9, the present invention provides an instant noodle package, which comprises the instant noodle bowl 1, the liquid-leaking bowl cover 2, the sealant 3 and a shrink-wrapping film (not shown in the figure), wherein the sealant 3 is coated on the upper surface of the bowl mouth flange 11 of the instant noodle bowl 1, so as to connect and combine the lower surface of the second peeling layer 23 of the liquid-leaking bowl cover 2 and the upper surface of the bowl mouth flange 11 together, and realize the sealing which can be peeled from the upper surface of the bowl mouth flange 11.

As shown in FIGS. 1 to 3a and 4 to 10, 280g/m was selected²The unbleached offset roll paper of the present invention is used as the paper sheet 101, a modified microfibrillated cellulose aerogel is coated on one side of the unbleached offset paper by a flexographic printing machine through an anilox roll and a glue roll to a coating thickness of 10 μm, a barrier coating 102 is formed on the surface of the unbleached offset roll paper, a part of which is coated with the barrier coating 102, is cut into individual sheets by a sheet cutter, and then a designed printing is printed on the other side of the unbleached offset roll paper by an offset printing machinePrinting 103, coating a layer of transparent gloss oil on the printing 103 in an on-line manner to form a protective layer 104, and cutting the unbleached offset roll paper coated with the barrier coating 102 on the rest part into small rolls with required size by using a cutting machine.

The method comprises the steps of cutting a printed paperboard 101 into fan-shaped paper surfaces by a die cutting machine according to a design size, adhering and forming a bowl body 12 on a paper bowl forming machine through an adhesive 105, forming a bowl opening flange 11 on the upper portion of the bowl body 12, punching and cutting an unprinted small roll of the natural-color offset roll paper into a wafer serving as a bowl bottom 13 on the paper bowl forming machine, forming an instant noodle bowl 1 together with the wafer through the adhesive 105, and forming a reticulate knurling 106 on the upper surface of the bowl opening flange 11 through a knurling process.

Selecting a starch film with the thickness of 15 microns as a starch film layer 211, coating a layer of modified microfibrillated cellulose aerogel on the surface of one side of the starch film by a gravure printing machine by adopting a surface printing process, wherein the coating thickness is 8 microns, forming a barrier coating 212 on the surface of the starch film, completing printing of printing pictures and texts 213 on the barrier coating 212, printing full-page transparent gloss oil on the printing pictures and texts to form a protective layer 214, and obtaining the first stripping layer 21 after printing.

Using a flexographic printing machine with a multi-layer composite function, printing a first adhesive layer 221 and a second adhesive layer 222 in the area of the first peeling layer 21 on the other side of the starch film layer 211 to form an adhesive layer 22 on the lower surface of the first peeling layer 21, and tightly bonding the adhesive layer 22 with a second peeling layer 23 made of aluminum foil with the thickness of 10 μm to form a main body film material of the bowl cover 2 of the present invention.

And (3) cutting the formed main body film material into the bowl cover 2 with the first lifting piece 24 and the second lifting piece 25 by a roll-to-roll die cutting machine according to the design appearance and the size of the bowl cover 2, and forming a penetrating transverse cut 261 on the second lifting layer 23 close to the second lifting piece 25 so as to form the bowl cover 2 with the liquid leakage port 26.

The hot melt adhesive is used as the sealant 3 to be coated on the reticulate pattern knurl 106 on the upper surface of the bowl mouth flange 11, the lower surface of the second stripping layer 23 of the bowl cover 2 with the liquid leakage port 26 is sealed and adhered with the upper surface of the bowl mouth flange 11 of the instant noodle bowl 1 with instant noodles, and the sealing which can be stripped from the upper surface of the bowl mouth flange 11 is realized. When the instant noodle bowl is used, the lower part of the bowl body 12 of the instant noodle bowl 1 is held by one hand, the first lifting piece 24 is held by the other hand, the first lifting piece 24 is separated from the sealant 3, so that a certain opening is formed between the bowl cover 2 and the bowl opening flange 11, a proper amount of boiled water is poured from the opening, then the first lifting piece 24 is buckled to the bowl opening flange 11 and is folded and buckled on the bowl opening flange 11 towards the lower part of the bowl opening flange 11, so that the heat of the boiled water is stored in the instant noodle bowl 1, after several minutes, the first lifting piece 21 is lifted upwards from the second lifting piece 25, the first lifting piece 21 is separated from the second lifting piece 23, a liquid leakage opening 26 is formed in the area of the transverse cut 261, and the hot water in the instant noodle bowl 1 leaks from the liquid leakage opening 26.

Example two

Referring to fig. 11 to 14, the present embodiment provides an environment-friendly and easily recyclable instant noodle package according to embodiment 1, which is different from the first embodiment in that: when the bowl cover 2 is die-cut and formed, a second transverse cut 251 is added at the second lifting piece 25, and the second transverse cut 251 penetrates through the die-cut second peeling layer 23, so that the first peeling layer 21 and the second peeling layer 23 can be separated conveniently. When the instant noodle bowl is used, the second lifting piece 25 is lifted from the second lifting piece 25, the second stripping layer 23 at the second lifting piece 25 penetrates through the die-cutting position from the second transverse cut 251 to be disconnected, the second stripping layer 23 adhered to the upper surface of the bowl opening flange 11 through the sealant 3 is adhered to the upper surface of the bowl opening flange 11 under the adhesive force, the first stripping layer 21 connected with the second lifting piece 25 is quickly separated, and the liquid leakage port 26 is formed in the area of the transverse cut 261, so that hot water in the instant noodle bowl 1 leaks from the liquid leakage port 26.

EXAMPLE III

Referring to example 1, this embodiment provides an environment-friendly and easily recyclable instant noodle package, as shown in fig. 15, which is different from the first embodiment in that: the transverse cut on the bowl cover 2 is changed from a linear type to an arc type, and a second transverse cut is added at the second lifting piece 25, and the rest is consistent with the embodiment.

Example four

Referring to fig. 16 to 17, the present embodiment provides an environment-friendly and easily recyclable instant noodle package according to embodiment 1, which is different from the first embodiment in that: the method comprises the steps of adopting a paper pulp molding process, adsorbing paper pulp fibers by wood pulp through a molding die, dehydrating, hot-pressing, drying and punching to form a square paper pulp molded instant noodle bowl 1, coating a layer of modified microfibrillated cellulose aerogel on the inner side of the paper pulp molded instant noodle bowl 1, wherein the coating thickness is 10 mu m, and transferring a color pattern on the outer side of the paper pulp molded instant noodle bowl 1 through a paper pulp molded color three-dimensional transfer process.

Through a roll-to-roll die cutting machine, according to the design appearance and the size of the bowl cover 2, the formed main body film is die-cut into the square bowl cover 2 with the first lifting piece 24 and the second lifting piece 25, a transverse cut 261 penetrating through the second lifting layer 23 is arranged on the position close to the second lifting layer 23, so that the bowl cover 2 with the liquid leakage opening 26 is formed, and a second transverse cut 251 is added at the position of the second lifting piece 25.

It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An environment-friendly and easily-recycled instant food package comprises a box body (1) and a box cover (2), and is characterized in that a main body material of the box body (1) is obtained by coating a paper base material or a pulp molding material with a barrier coating material, wherein the barrier coating material is modified microfibrillated cellulose aerogel; the box cover (2) comprises a first stripping layer (21), an adhesive layer (22) and a second stripping layer (23), the first stripping layer (21) and the second stripping layer (23) are bonded through the adhesive layer (22), the main material of the first stripping layer (21) is obtained by coating a barrier coating material on a paper base material or a degradable film base material, and the barrier coating material is modified microfibrillated cellulose aerogel; the second stripping layer (23) is aluminum foil.

2. The environment-friendly easily-recycled instant food package according to claim 1, wherein the thickness of the barrier coating of the main material of the box body (1) is 30-100 μm.

3. The environment-friendly and easily recyclable convenience food package according to claim 1 or 2, wherein the paper substrate of the box body (1) is a single paper substrate or a composite of multiple layers of different paper substrates; the gram weight of the paper base material is 220-350 g/m²(ii) a The barrier coating is coated on the paper-based base material through an anilox roller, and the mesh number of the anilox roller is 100-200 meshes.

4. The environment-friendly and easily recyclable convenience food package according to claim 1 or 2, wherein the base material of the case body (1) is a pulp molding material, and the barrier coating is formed by spraying the modified microfibrillated cellulose aerogel on the pulp molding surface through an air pressure spray gun.

5. The environment-friendly easy-to-recycle instant food package according to claim 1, wherein the thickness of the barrier coating of the main material of the first peeling layer (21) is 0.1-1 μm.

6. The environment-friendly and easily-recycled instant food package according to claim 1 or 5, wherein the main material of the first stripping layer (21) is a paper substrate coated with a barrier coating material, and the gram weight of the paper substrate is 80-160 g/m²The barrier coating is coated on the paper-based base material through an anilox roller, and the mesh number of the anilox roller is 100-200 meshes.

7. The environment-friendly and easily recyclable convenience food package according to claim 1 or 5, wherein the first release layer (21) is made of a barrier coating material coated with a degradable film base material, the thickness of the degradable film base is 20-100 μm, the barrier coating is coated on the degradable film base through an anilox roller, and the mesh number of the anilox roller is 200-800 meshes.

8. Use of the environment-friendly easy-to-recycle instant food package according to any one of claims 1 to 7 in instant noodle packaging, characterized in that the box body (1) is an instant noodle bowl and the box cover (2) is a liquid-leaking bowl cover; but be equipped with a plurality of weeping mouth (26) on the second peel ply (23) of weeping bowl lid, weeping mouth (26) are formed by the incision that runs through the second peel ply, but the edge of weeping bowl lid is equipped with the piece of lifting off of outside extension.

9. Use according to claim 8, wherein the liquid-leakable bowl cover comprises, in sequence from top to bottom, a first release layer (21), an adhesive layer (22) and a second release layer (23), the first release layer (21) and the second release layer (23) being bonded by the adhesive layer (22), the adhesive layer (22) being divided into an adhesive layer-one region (221) and an adhesive layer-two region (222) according to the difference in the peel force, the peel force of the adhesive layer-one region (221) being greater than the peel force of the adhesive layer-two region (222).

10. The application of the instant noodle bowl according to claim 8 or 9, wherein the instant noodle bowl comprises a bowl mouth, a bowl body (12) and a bowl bottom, a flange (11) is arranged at the bowl mouth, the joint of the flange (11) and the bowl mouth is in a circular arc shape, a printing image-text (103) and a protective layer (104) are arranged on the outer side of the bowl body (12), the protective layer (104) covers the printing image-text (103), and a barrier coating (102) is arranged on the inner side of the bowl body (12);

the notch (261) is a transverse notch, and a protruding part (262) is arranged at the opening of the transverse notch;

the lifting piece comprises a first lifting piece (24) and a second lifting piece (25), and the first lifting piece (24) and the second lifting piece (25) are symmetrically distributed on two sides of the bowl cover capable of leaking liquid;

the flange (11) and the bowl cover (2) capable of leaking liquid are bonded through the sealant (3), and the instant noodle bowl and the bowl cover capable of leaking liquid are sealed through the shrink packaging film.