Moisture-resistant oxygen-resistant environment-friendly high-barrier recyclable paper structure oat package

Abstract

The utility model discloses a moisture-resistant oxygen-resistant environment-friendly high-barrier recyclable paper structure oat package which comprises an outer layer, a protective coating and an inner layer, and the inner layer is made of MOPP materials. The inner layer is coated with the protective coating, the outer layer is arranged on the side, away from the inner layer, of the protective coating, and the outer layer is made of kraft paper or chemimechanical pulp paper. Through the composite design of the paper, the protective coating and the MOPP film, high barrier property and environmental protection property are realized, oxygen and water vapor are effectively blocked, and the shelf life of the oats is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to food packaging product technical field, concretely relates to a kind of wet-proof oxygen barrier environment-friendly high-barrier recyclable paper structure oat package. BACKGROUND

[0002] Oat and other food have higher requirements for the moisture resistance and oxygen barrier of packaging, and traditional plastic packaging can meet the demand, but does not meet the environmental trend. Paper, as a recyclable material, is difficult to be directly used for high-demand food packaging due to its insufficient barrier performance. In addition, the mechanical properties of current packaging materials are poor, and the barrier performance of the packaging may be deteriorated due to collision, extrusion, etc. during transportation and handling.

[0003] Therefore, it is of great market value and social significance to develop a paper structure with high barrier property, environmental friendliness and recyclability for oat packaging. SUMMARY

[0004] The utility model aims at overcoming the defects in the prior art, and provides a wet-proof oxygen barrier environment-friendly high-barrier recyclable paper structure oat package to solve the instability of the barrier property of the paper structure packaging.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is to design a wet-proof oxygen barrier environment-friendly high-barrier recyclable paper structure oat package, which comprises an outer layer, a protective coating and an inner layer. The inner layer is made of MOPP material. The protective coating is applied to the inner layer. The outer layer is arranged on the side of the protective coating away from the inner layer. The outer layer is made of kraft paper or chemical mechanical pulp paper.

[0006] Further, the outer layer is made of kraft paper.

[0007] Further, the thickness of the outer layer is 70-100 μm.

[0008] Further, the protective coating is water-based acrylic resin.

[0009] Further, the thickness of the protective coating is 5-10 μm.

[0010] Further, the thickness of the inner layer is 10-25 μm.

[0011] Further, it further comprises a printing layer, which is arranged on the side of the outer layer away from the protective coating.

[0012] Further, the thickness of the printing layer is 2-5 μm.

[0013] The utility model has the advantages and beneficial effects that:

[0014] (1) Through the composite design of paper, protective coating and MOPP film, high barrier property and environmental protection are realized, oxygen and water vapor are effectively blocked, and the shelf life of oat is prolonged.

[0015] (2) The protective coating is adopted, the barrier property of MOPP is stable, the MOPP has good kink resistance and tear resistance, and the transportation and storage requirements are met.

[0016] (3) The materials used in the oat packaging are all in line with food-grade safety standards, the composite structure design is easy to separate, the paper and the coating are recycled, and the recycling economy requirement is met; biodegradable or recyclable materials are used, and environmental pollution is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the moisture-proof and oxygen-proof environmental protection high-barrier recyclable paper structure oat packaging.

[0018] In the figure: outer layer 1, protective coating 2, inner layer 3, printing layer 4. DETAILED DESCRIPTION

[0019] The specific embodiments of the utility model are further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot be used to limit the protection scope of the utility model.

[0020] According to Figure 1 The utility model discloses a moisture-proof and oxygen-proof environmental protection high-barrier recyclable paper structure oat packaging, which comprises an outer layer 1, a protective coating 2 and an inner layer 3, the inner layer 3 adopts MOPP material, the protective coating 2 is coated on the inner layer 3, the outer layer 1 is arranged on the side, away from the inner layer 3, of the protective coating 2, and the outer layer 1 adopts kraft paper or chemical mechanical pulp paper.

[0021] As a preferred technical scheme of the above, the outer layer 1 adopts kraft paper.

[0022] As a preferred technical scheme of the above, the thickness of the outer layer 1 is 70-100 microns.

[0023] As a preferred technical scheme of the above, the protective coating 2 is water-based acrylic resin. The protective coating has the following advantages: strong adhesion, which can ensure that the coating is firmly combined with the surface of the inner layer and prevents falling off; good flexibility, which can adapt to the deformation when kinking and avoid cracking or peeling; chemical resistance, which can resist the erosion of chemical substances such as acid, alkali and solvent; wear resistance, which can prevent damage caused by friction or mechanical impact; and good barrier property, which can effectively block oxygen, water vapor and the like and can remain stable in high-temperature or low-temperature environments.

[0024] Preferably, the aqueous acrylic resin is michelman's MFB4100.

[0025] As a preferred embodiment of the above technical solution, the thickness of the protective coating 2 is 5-10 μm.

[0026] As a preferred embodiment of the above technical solution, the thickness of the inner layer 3 is 10-25 μm.

[0027] As a preferred embodiment of the above technical solution, it further comprises a printing layer 4, which is arranged on the side of the outer layer 1 away from the protective coating 2.

[0028] As a preferred embodiment of the above technical solution, the thickness of the printing layer 4 is 2-5 μm. It can be printed by using food-grade ink.

[0029] (1) Example

[0030] Example:

[0031] A moisture- and oxygen-resistant, environmentally friendly, high-barrier, recyclable paper structure oat packaging comprises an outer layer 1, a protective coating 2, an inner layer 3, and a printing layer 4, the protective coating 2 is coated on the inner layer 3, the outer layer 1 is arranged on the side of the protective coating 2 away from the inner layer 3, and the printing layer 4 is arranged on the side of the outer layer 1 away from the protective coating 2.

[0032] The inner layer 3 is made of MOPP material; the thickness of the inner layer 3 is 13 μm.

[0033] The outer layer 1 is made of kraft paper; the thickness of the outer layer 1 is 90 μm.

[0034] The protective coating 2 is an aqueous acrylic resin; the thickness of the protective coating 2 is 8 μm. The aqueous acrylic resin is michelman's MFB4100.

[0035] The thickness of the printing layer 4 is 3 μm.

[0036] Comparative Example:

[0037] The difference from Example 1 is only that it lacks a protective coating 2.

[0038] (2) Performance Test

[0039] (1) Performance Test Method

[0040] OTR (23℃, 0%RH): measured according to the standard ASTM D 3985-05;

[0041] WVTR (38℃, 90%RH): measured according to the standard ASTM F 1249-13;

[0042] (2) Performance test results

[0043] The performance test results of the examples and comparative examples are as follows:

[0044] OTR / cm 3 / m 2 .day]]> WVTR / g / m 2 .day]] Examples 8.265 0.324 Comparative Examples 10.180 0.710

[0045] The packages prepared for the examples and comparative examples were subjected to 5 kinks and 10 kinks, respectively, and then their moisture and oxygen barrier properties were measured. The performance test results are as follows:

[0046]

[0047] From the test results of the examples and comparative examples, it can be seen that by coating a protective coating on the inner layer MOPP material, the moisture and oxygen barrier properties can be effectively improved. At the same time, the protective coating can adapt to the deformation of the inner layer MOPP when kinked, avoiding cracking or peeling, and protecting the stable barrier properties of MOPP.

[0048] (Three) Paper recyclability test

[0049] (1) Test method: determined according to the provisions of standard GB / T 43588-2023 "Paper, paperboard and paper products recyclability evaluation method".

[0050] (2) Detection instruments and equipment

[0051] Electronic balance, sensitivity is 0.1 g and 0.0001 g respectively;

[0052] Fiber defibrator; Somerville-type

[0053] Flat plate vibrating screen: equipped with round hole screen plate, screen hole inner diameter is 0.7 mm, equipped with slot screen plate, screen plate slot width is 0.15 mm;

[0054] Homogenizing mixer;

[0055] Electric heating constant temperature drying box;

[0056] Fast kessier paper sheet former;

[0057] (3) Performance test results

[0058] The prepared package of the example was tested, and the test results are as follows:

[0059]

[0060] From the above test results, it can be seen that the package prepared by the present application is convenient for recycling and reuse, and meets the requirements of circular economy; biodegradable or recyclable materials are used, reducing environmental pollution.

[0061] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A wet and oxygen barrier, environmentally friendly, high barrier, recyclable paper structure oat packaging, characterized by, It comprises an outer layer (1), a protective coating (2) and an inner layer (3), the inner layer (3) is made of MOPP material; the protective coating (2) is coated on the inner layer (3), the outer layer (1) is arranged on the side of the protective coating (2) away from the inner layer (3), and the outer layer (1) is made of kraft paper or chemical mechanical pulp paper.

2. A moisture and oxygen barrier, environmentally friendly, high barrier, recyclable paper structure oat packaging according to claim 1, characterized in that, The outer layer (1) is made of kraft paper.

3. A moisture and oxygen barrier, environmentally friendly, high barrier recyclable paper structure oat packaging according to claim 2, characterized in that, The thickness of the outer layer (1) is 70-100 mu m.

4. A moisture and oxygen barrier, environmentally friendly, high barrier, recyclable paper structure oat packaging according to claim 3, characterized in that, The protective coating (2) is an aqueous acrylic resin.

5. A moisture and oxygen barrier, environmentally friendly, high barrier recyclable paper structure oat packaging according to claim 4, characterized in that, The thickness of the protective coating (2) is 5-10 mu m.

6. A moisture and oxygen barrier, environmentally friendly, high barrier recyclable paper structure oat packaging according to claim 5, characterized in that, The thickness of the inner layer (3) is 10-25 mu m.

7. A moisture and oxygen barrier, environmentally friendly, high barrier recyclable paper structure oat packaging according to claim 5, characterized in that, It further comprises a printing layer (4), which is arranged on the side of the outer layer (1) away from the protective coating (2).

8. A moisture and oxygen barrier, environmentally friendly, high barrier, recyclable paper structure oat packaging according to claim 7, characterized in that, The thickness of the printing layer (4) is 2-5 mu m.

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