High-barrier packaging sheet and conical cup

Abstract

The utility model discloses a high-barrier packaging sheet and a conical cup, which comprise a paper base material, one side of the paper base material is provided with a printing layer or a printing laser transfer layer, and the other side of the paper base material is provided with a bonding material layer, a high-barrier PET (Polyethylene Terephthalate) film and a heat sealing layer. The high-barrier PET film is a silicon oxide PET film, an aluminum oxide PET film or a PVDC coating PET film. The high-barrier PET film on the inner layer of the paper packaging box is combined with the binding material layer and the heat sealing layer, and the heat sealing layer contains a light blocking agent, so that invasion of ultraviolet rays to food is reduced, the liquid packaging box has excellent performance in the aspects of oxygen blocking, water blocking and nitrogen blocking, the quality guarantee period of a real object can be prolonged, and the liquid packaging box can enter a microwave oven to be heated. The device has excellent performance in technicality, economical efficiency and practicability.

Description

Technical Field

[0001] The utility model relates to a high-barrier packaging sheet and a cylindrical or conical cup. Background Art

[0002] Existing pre-prepared meals and puffed foods are packaged in aluminum boxes, plastic boxes, and aluminum foil tubes. In the context of de-aluminization and de-plasticization, a green and environmentally friendly packaging material is needed to replace them. To this end, we have developed a high-barrier packaging sheet and cylindrical or conical cup. Utility Model Content

[0003] The utility model aims to solve the technical problem and provides a high-barrier packaging sheet and a cylindrical or conical cup, which, by means of an inner layer of high-barrier PET film combined with an adhesive layer and a heat-sealing layer, enables this type of liquid packaging to have excellent oxygen barrier, water barrier and nitrogen barrier properties, can extend the shelf life of the actual product, and can be heated in a microwave oven.

[0004] The technical solution adopted by the utility model to solve the technical problem is to provide 1. a high barrier packaging sheet, characterized in that it comprises:

[0005] A paper substrate has a printing layer or a printed laser transfer layer on one side and an adhesive layer, a high-barrier PET film and a heat-sealing layer on the other side.

[0006] In one or more embodiments of the present invention, the high barrier PET film is a silicon oxide PET, an aluminum oxide PET film or a PVDC coated PET film.

[0007] In one or more embodiments of the present invention, the material of the adhesive layer includes any one of PE, EMAA, EAA, AE, surin, and AC agent.

[0008] In one or more embodiments of the present invention, the heat sealing layer is made of polyethylene or ethylene copolymer or a multi-layer co-extruded material, and the multi-layer co-extruded material is a material extruded from any one or any combination of PP, EVOH, Tie and PE.

[0009] In one or more embodiments of the present invention, the heat-sealing layer is made of polyethylene or ethylene copolymer or a multi-layer co-extruded material.

[0010] In one or more embodiments of the present invention, an adhesive layer is provided between the high barrier PET layer and the heat sealing layer; the adhesive layer is made of any one of PE, AE, AC agent, EMAA, EAA, sarin resin or adhesive.

[0011] In one or more embodiments of the present invention, the thickness ratio of the printed layer or printed laser transfer outer layer, the paper substrate, the adhesive layer, the high barrier PET layer and the heat sealing layer is 3 to 15:200 to 1000:14 to 20:10 to 20:30 to 70; the thickness of the paper substrate is 0.2 to 1.5 mm.

[0012] In one or more embodiments of the present invention, the printed layer or printed laser transfer layer is made by any one of offset printing, gravure printing, flexographic printing, silk screen printing and laser cold transfer.

[0013] The utility model also provides a conical cup, which is made of the above-mentioned high barrier packaging sheet material and comprises a bottom plate part and a cup side wall, and the joints of the cup side walls are folded and bonded or cut and butted and bonded.

[0014] Beneficial effects of the utility model: the above technical solution is adopted, and the high barrier PET film of the inner layer is combined with the adhesive layer and the heat sealing layer, so that the liquid packaging has excellent performance in terms of oxygen barrier, water barrier and nitrogen barrier, which can extend the shelf life of the real object and can be heated in a microwave oven. It has excellent performance in terms of technology, economy and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 This is a schematic diagram of the cross-sectional structure of the high barrier packaging sheet in the first embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of a high barrier packaging sheet in the second embodiment of the utility model;

[0018] Figure 3 This is an expanded view of a conical cup in an embodiment of the utility model;

[0019] Figure 4 for Figure 3 A schematic diagram of some structures from the perspective of A in the middle;

[0020] Figure 5 for Figure 3 A schematic diagram of the structural part of another embodiment from the perspective of A in the middle. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] In the description of the present utility model, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0025] First embodiment:

[0026] Reference Figure 1 The embodiment of the utility model provides a high barrier packaging sheet, which comprises: a paper substrate 1, one side of which is provided with a printing layer 2 or a printed laser transfer layer, and the other side is provided with a bonding material layer 3, a high barrier PET film 4 and a heat sealing layer 5. The high barrier PET film 4 is a silicon oxide PET, an aluminum oxide PET film or a PVDC coated PET film.

[0027] The material of the adhesive layer 3 includes any one or any combination of PE, EMAA, EAA, AE, surin, and AC agent.

[0028] The heat sealing layer 5 is made of polyethylene or ethylene copolymer or a multi-layer co-extruded material. The multi-layer co-extruded material is a material extruded from any one or any combination of PP, EVOH, Tie and PE.

[0029] The heat sealing layer 5 is made of polyethylene or ethylene copolymer or multi-layer co-extruded material, and contains a light-blocking agent to reduce the invasion of ultraviolet rays on food.

[0030] Second embodiment:

[0031] Reference Figure 2 As shown, the structure of the paper layer and the materials used for each layer are substantially the same as those of the first embodiment, except that an adhesive layer 6 is provided between the high barrier PET layer 4 and the heat sealing layer 5; the adhesive layer 6 is made of any one or any combination of PE, AE, AC agent, EMAA, EAA, sarin resin or adhesive.

[0032] The printing layer 2 or the printed laser transfer outer layer, the paper substrate 1, the adhesive layer 3, the high barrier PET layer 4 and the heat sealing layer 5 have a thickness ratio of 3 to 15: 200 to 1000: 14 to 20: 10 to 20: 30 to 70. The thickness of the paper substrate is 0.2 to 1.5 mm.

[0033] The thickness of the paper substrate 1 is 0.2 to 1.5 mm. The adhesive layer 6 is an adhesive. The printing layer 2 or the printed laser transfer layer is made by any one of offset printing, gravure printing, flexographic printing, silk screen printing and laser cold transfer and a combination of multiple printing processes.

[0034] It is made of the above-mentioned high-barrier packaging sheet material and comprises a bottom plate portion and a cup side wall. The cup side walls are connected by folding edges or cutting surfaces.

[0035] Second embodiment:

[0036] Figure 3 The cone-shaped cup shown is made of the above-mentioned high barrier packaging sheet and comprises a bottom plate portion 10 and a cup side wall 20 .

[0037] Figure 4 The structure shown is the structure of the cup side walls 20 before the folded edges are bonded.

[0038] Figure 5 As shown, the joints or cut surfaces of the cup side walls 20 are butt-jointed and bonded.

[0039] In combination with the above embodiments and with reference to all the accompanying drawings, the principle is further described:

[0040] The high barrier PET film 4 in the inner layer of the paper packaging box is combined with the adhesive layer 3 and the heat sealing layer 5, and the heat sealing layer 5 contains a light barrier to reduce the invasion of ultraviolet rays on the food, so that this liquid packaging has excellent performance in terms of oxygen barrier, water barrier and nitrogen barrier, which can extend the shelf life of the physical object and can be heated in a microwave oven. It has excellent performance in terms of technology, economy and practicality.

[0041] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A high barrier packaging sheet, characterized in that: It includes: A paper substrate has a printing layer or a printed laser transfer layer on one side and an adhesive layer, a high-barrier PET film and a heat-sealing layer on the other side.

2. The high barrier packaging sheet according to claim 1, characterized in that: The high barrier PET film is silicon oxide PET, aluminum oxide PET film or PVDC coated PET film.

3. The high barrier packaging sheet according to claim 1 or 2, characterized in that: The material for making the adhesive layer includes any one of PE, EMAA, EAA, AE, surin, and AC agent.

4. The high barrier packaging sheet according to claim 1, characterized in that: The heat-sealing layer is made of polyethylene or ethylene copolymer or a multi-layer co-extruded material, and the multi-layer co-extruded material is any one of PP, EVOH, Tie and PE.

5. The high barrier packaging sheet according to claim 1, characterized in that: The heat sealing layer is made of polyethylene or ethylene copolymer or multi-layer co-extruded material.

6. The high barrier packaging sheet according to claim 1, characterized in that: An adhesive layer is arranged between the high barrier PET film and the heat sealing layer; the adhesive layer is made of any one of PE, AE, AC agent, EMAA, EAA, sarin resin or adhesive.

7. The high barrier packaging sheet according to claim 1, characterized in that: The thickness ratio of the printed layer or printed laser transfer outer layer, paper substrate, adhesive layer, high barrier PET layer and heat sealing layer is 3 to 15:200 to 1000:14 to 20:10 to 20:30 to 70; the thickness of the paper substrate is 0.2 to 1.5 mm.

8. The high barrier packaging sheet according to claim 1, characterized in that: The printing layer or printed laser transfer layer is made by any one of offset printing, gravure printing, flexographic printing, silk screen printing and laser cold transfer.

9. A conical cup, characterized in that: It is made of any packaging sheet material in claims 1-8, and comprises a bottom plate portion and a cup side wall, wherein the cup side walls are joined by folded edges or cut surfaces.

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