CN217243647U

CN217243647U - Waterproof grease proofing paper pulp molding cutlery box

Info

Publication number: CN217243647U
Application number: CN202122785236.9U
Authority: CN
Inventors: 王青; 谢东; 李发勇; 刘海露; 李辰
Original assignee: Institute of Biological and Medical Engineering of Guangdong Academy of Sciences
Current assignee: Institute of Biological and Medical Engineering of Guangdong Academy of Sciences
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-08-23
Anticipated expiration: 2031-11-12

Abstract

The utility model discloses a waterproof and oilproof paper pulp molding lunch box, which relates to the technical field of packaging materials and comprises an outer barrier layer, a paper pulp molding layer, a middle barrier layer and a vacuum aluminum plating layer; in order to prevent the pulp molding from generating chip falling problems during use, the surface of the outer layer of the pulp molding is sprayed with gloss oil to be used as an outer layer barrier layer; the middle barrier layer is sprayed with the water-based coating, so that the surface of the pulp molding can be smoother, and the problems of needle holes and micropores and the like caused by fluffing of fibers on the surface of the pulp molding after the surface is coated with the vacuum aluminum coating are avoided, so that the defective rate is greatly reduced; the degradable polylactic acid aluminizer is selected as a blocking layer on the surface layer, so that the barrier layer has high water and oil blocking performance, the using amount of aluminum is greatly reduced compared with a composite aluminum foil, energy and materials are saved, and the cost can be greatly reduced.

Description

Waterproof grease proofing paper pulp molding cutlery box

Technical Field

The utility model relates to a packaging material technical field, concretely relates to waterproof grease proofing paper pulp molding cutlery box.

Background

With the development of the industries such as take-out, fast food and the like, the consumption of corresponding disposable tableware (mostly made of materials such as polypropylene, polystyrene and the like) and the like is rapidly increased, and the generated plastic pollution is increased rapidly. Along with the implementation of the policy of ' plastic restriction order ', biodegradable paper-based tableware attracts people's extensive attention. However, the molecular structure of the plant fiber contains a large amount of hydroxyl, so that the plant fiber is very easy to absorb water and oil, and cannot meet the use requirements of the outside fast food industry on the food package. Therefore, it is very necessary to apply water and oil repellent treatment to the pulp molding. The measures adopted at present are mainly to add fluorine-containing oil-proof agents into a slurry system so as to achieve the purposes of water and oil resistance. However, many studies have shown that C8-PFCs (8-carbon perfluorocarbons) are prohibited due to their toxicological insecurity, such as bioaccumulation and potential systemic and developmental toxicity. Therefore, it is very necessary to prepare a fluorine-free added water and oil repellent pulp molded meal box by technical modification.

SUMMERY OF THE UTILITY MODEL

Not enough to among the prior art, the utility model provides a waterproof grease proofing paper pulp molding, this paper pulp molding structural design scientific and reasonable can effective separation water and oil, can be used for the use of disposable tableware such as express delivery takeaway.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a waterproof and oilproof paper pulp molding lunch box comprises an outer layer barrier layer, a paper pulp molding layer, a middle barrier layer and a vacuum aluminum coating layer which are arranged in sequence from the outside to the inside of the lunch box, wherein,

the outer barrier layer is water-based UV gloss oil;

the paper pulp molding layer is a bagasse-based paper pulp molding product;

the intermediate barrier layer is a degradable aqueous coating; and the number of the first and second groups,

the vacuum aluminum plating layer is a degradable polylactic acid aluminum plating film.

The water and oil resistant pulp molded meal box as described above, further comprising: the thickness of the pulp molding layer is 2 mm.

The water and oil resistant pulp molded meal box as described above, further comprising: the degradable aqueous coating is one or two of a cationic guar gum aqueous solution or a cationic pregelatinized starch aqueous solution.

The water and oil resistant pulp molded meal box as described above, further comprising: the degradable polylactic acid aluminizer is single-layer evaporation plated aluminum.

Compared with the prior art, the utility model, its beneficial effect lies in: the surface of the outer layer of the pulp molding is sprayed with the varnish as an outer layer barrier layer, so that fluffing and powder falling of the pulp molding product can be prevented, and the mechanical properties such as stiffness and the like caused by soaking the outer layer of the pulp molding can be prevented from being reduced. The paper pulp molding is tightly combined with the vacuum aluminum coating layer by selecting the water-based resin as the middle barrier layer, so that the paper pulp molding can be used as an adhesive, the problem of untight attaching tympanic membrane is avoided, the surface of the paper pulp molding can be smoother, and the problems of needle holes and micropores caused by fluffing of fibers on the surface of the paper pulp molding after the vacuum aluminum coating layer is coated on the surface are avoided, so that the defective rate is greatly reduced. The degradable polylactic acid aluminized film is selected as the blocking layer, so that the barrier layer has high water and oil resistance, the using amount of aluminum is greatly reduced compared with a composite aluminum foil, energy and materials are saved, and the cost can be greatly reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a sectional view of the water and oil resistant pulp molded lunch box of the present invention.

Wherein: 1. an outer barrier layer; 2. a pulp molding layer; 3. an intermediate barrier layer; 4. and (4) vacuum plating an aluminum layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example (b):

it should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, of embodiments of the present invention are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, fig. 1 is a sectional view of the waterproof and oilproof pulp molded lunch box of the present invention. The utility model provides a waterproof grease proofing paper pulp mould, this paper pulp mould structural design scientific and reasonable can effective separation water and oil, can be used for the use of disposable tableware such as express delivery takeaway.

The utility model provides a waterproof grease proofing pulp molding cutlery box, includes outer barrier layer 1, pulp molding layer 2, middle barrier layer 3, the vacuum aluminized layer 4 that sets gradually in to from the cutlery box outside, wherein, outer barrier layer 1 is waterborne UV gloss oil (spraying waterborne UV acrylate resin), and spraying waterborne UV acrylate resin can further improve the holistic waterproof performance of pulp molding. The paper pulp molding layer 2 is a bagasse-based paper pulp molding product; the middle blocking layer 3 is a degradable water-based coating which can further improve the composite tightness of the pulp molding and the vacuum aluminum-plated layer 4 and prevent needle holes or micropores. And the vacuum aluminum-plated layer 4 is a degradable polylactic acid aluminum-plated film. Among the above-mentioned technical scheme, through setting up outer barrier layer 1, middle barrier layer 3 and vacuum aluminum coated layer 4, improved the waterproof and oilproof characteristic of paper pulp molding tableware greatly, can satisfy the demand of paper tableware separation water oil, have simple structure, environmental protection economy and the advantage of easy recovery.

As an alternative embodiment, in some embodiments, the pulp moulding layer 2 has a thickness of 2 mm.

As an alternative embodiment, in certain embodiments, the degradable aqueous coating is one or both of a cationic guar aqueous solution or a cationic pregelatinized starch aqueous solution, and further the degradable polylactic acid aluminized film is a monolayer deposited aluminized metal. The biodegradable polylactic acid single-side aluminum-plated layer has excellent water and oil resistance, and can meet the use requirement of disposable fast food packaging.

The utility model has the advantages that: the surface of the outer layer of the pulp molding is sprayed with varnish as an outer layer barrier layer, so that the pulp molding product can be prevented from fluffing and dusting. The paper pulp molding is tightly combined with the vacuum aluminum coating layer by selecting the water-based resin as the middle barrier layer, so that the paper pulp molding can be used as an adhesive, the problem of untight attaching tympanic membrane is avoided, the surface of the paper pulp molding can be smoother, and the problems of needle holes and micropores caused by fluffing of fibers on the surface of the paper pulp molding after the vacuum aluminum coating layer is coated on the surface are avoided, so that the defective rate is greatly reduced. The degradable polylactic acid aluminized film is selected as the blocking layer, so that the barrier layer has high water and oil resistance, the using amount of aluminum is greatly reduced compared with a composite aluminum foil, energy and materials are saved, and the cost can be greatly reduced.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a waterproof grease proofing paper pulp molding cutlery box, includes outer barrier layer (1), paper pulp molding layer (2), middle barrier layer (3), vacuum aluminum coated layer (4) that set gradually in to from the cutlery box, its characterized in that:

the outer barrier layer (1) is water-based UV gloss oil;

the paper pulp molding layer (2) is a bagasse-based paper pulp molding product;

the intermediate barrier layer (3) is a degradable aqueous coating; and the number of the first and second groups,

the vacuum aluminum plating layer (4) is a degradable polylactic acid aluminum plating film.

2. The water and oil resistant pulp molded lunch box according to claim 1, wherein: the thickness of the pulp molding layer (2) is 2 mm.

3. The water and oil resistant pulp molded lunch box according to claim 1, wherein: the degradable polylactic acid aluminizer is single-layer evaporation plated aluminum.