TWI713900B - Paper container package and method for manufacturing the same - Google Patents

Abstract

A paper container package is provided, including: a paper layer; two plastic layers , the two plastic layers disposed on relative two sides of the paper layer; wherein each of the two plastic layers and the paper layer are formed at least one window in a thickness direction, the at least one window is light-permeable. A method for manufacturing a paper container package above is also provided, including the following steps of: preparing a paper material; making a hollowed window on the paper material; covering a plastic lamination layer on an inner side of the paper material; covering a plastic layer on an outer side of the paper material to form a paper container base material; cutting the paper container base material to form a plurality of paper container packages.

Description

Paper container packaging and manufacturing method thereof

The present invention relates to packaging, in particular to a paper container packaging and its manufacturing method.

General containers, such as PET bottles, paper containers, etc., are mainly for liquids.

The paper container of the prior art has a paper layer and a coating layer provided with the inner side of the paper layer. The paper layer is folded into a predetermined shape and enclosed to form a chamber. The paper layer of the conventional paper container has a certain thickness to provide support. However, the thickness of the paper layer is thick and it is not easy to shape, so the shape that the paper layer can mold is limited. Furthermore, if the paper container of the prior art is to open a window for observing the substance in the container, it is necessary to attach a see-through material to the inside of the paper layer, which causes the processing steps to be complicated and difficult.

Conventional PET bottles are mostly formed of plastic, but they are not easy to print. Usually, another plastic sheet with a printed design is placed on the outer layer. Therefore, the conventional PET bottle has the defect that it is not easy to print.

Therefore, it is necessary to provide a novel and progressive paper container packaging to solve the above-mentioned problems.

The main purpose of the present invention is to provide a paper container package and a manufacturing method thereof, which has a window for observing the inside.

In order to achieve the above object, the present invention provides a paper container package, comprising: a paper layer; two plastic layers, the two plastic layers are arranged on two opposite sides of the paper layer, and one of the plastic layers is coated with a film The plastic coating layer on the surface of the paper layer; wherein each of the plastic layers and the paper layer co-construct at least one window in the thickness direction opposite to each other, and the at least one window is light-transmissive; wherein the paper layer is provided with at least A hollow portion, the at least one hollow portion and each of the plastic layers overlap each other in the thickness direction to form the at least one window.

In order to achieve the above objective, the present invention also provides a method for manufacturing a paper container package, including: preparing a paper material; making a hollow window on the paper material; and covering a plastic film on the inner side of one of the paper materials Layer; a plastic layer is covered on one of the paper materials to form a paper container substrate; the paper container substrate is cut to produce multiple paper container packaging.

1,2,92: paper container packaging

3: Stamping mechanism

4: Extrusion machine

5, 7: Film

6: Rolling wheels

8: Cutting machine

10: paper layer

11: hollow part

20, 30, 90: plastic layer

40, 71: Windows

50: Room

60: opening

61: Combination piece

62: External thread structure

S1~S5: steps

70: paper

80: Plastic coating layer

91: Paper container substrate

93: Plastic foam layer

Figure 1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is a cross-sectional view of the line A-A in Figure 1;

Figure 3 is a cross-sectional view of the line B-B in Figure 1;

Figure 4 is a perspective view of another preferred embodiment of the present invention.

Fig. 5 is a flow block diagram of a preferred embodiment of the present invention.

Fig. 6 is a production flow chart of a preferred embodiment of the present invention.

Fig. 7 is a schematic diagram of a paper container substrate according to a preferred embodiment of the present invention.

Fig. 8 is a perspective view of a paper container package according to another preferred embodiment of the present invention.

Figure 9 is a partial cross-sectional view of Figure 8;

Fig. 10 is a partial cross-sectional view of another preferred embodiment of the present invention.

The following examples are only used to illustrate the possible implementation aspects of the present invention, but they are not intended to limit the scope of protection of the present invention, and are described first.

Please refer to FIGS. 1 to 3, which show a preferred embodiment of the present invention. The paper container package 1 of the present invention includes a paper layer 10 and two plastic layers 20, 30.

The two plastic layers 20, 30 are arranged on two opposite sides of the paper layer 10. At least one of the two plastic layers 20, 30 can be thicker than the paper layer 10, and the plastic layer 30 is coated with a coating film. The plastic coating layer on the surface of the paper layer 10; wherein, each of the plastic layers 20, 30 and the paper layer 10 co-construct at least one window 40 in the thickness direction, and the at least one window 40 is light-transmissive; wherein, The paper layer 10 is provided with at least one hollow portion 11, and the at least one hollow portion 11 and each of the plastic layers 20 and 30 overlap each other in the thickness direction to form the at least one window 40. Thereby, it is provided that the at least one window 40 is formed by simple processing steps, and the design graphics and text can be directly printed on the paper layer 10.

The number of the at least one window 40 is plural. The plural windows 40 are not limited to a square shape, and can have any shape, and are not limited to a linear or matrix arrangement; in this embodiment, the paper layer 10 corresponds to the at least one window 40 as hollow Further description, the paper layer 10 corresponding to all the plurality of windows 40 can be hollowed out or non-hollowed out but transparent, it can also be the corresponding part of the plurality of windows 40 is hollowed out, corresponding to other parts of the plurality of windows 40 is not hollowed out But transparent. Of course, it does not rule out that any one of the two plastic layers 20, 30 corresponding to at least one of the windows 40 is hollowed out.

At least one of the two plastic layers 20, 30 is thermoplastic, or both of the two plastic layers 20, 30 are thermoplastic; at least one plastic layer 90 partially protrudes into the at least one hollow portion 11 and connects to the other plastic layer. Layer 80 (Figure 9); in this embodiment, the two plastic layers 20, 30 are thermoplastics, and the plastic layer 20 of thermoplastics can be directly molded into any shape, such as not limited to the box (Figure 1 ) And the bottle body, whose rigidity is greater than that of the paper layer 10, to provide supporting effect and waterproof function. The two plastic layers 20 and 30 are not limited to being pasted on the paper layer 10 by heat fusion.

Preferably, one of the two plastic layers 20, 30 is thicker than the paper layer 10, and the other is thinner than the paper layer 10. In this embodiment, the plastic layer 20 is 1.5 times thicker than the paper layer 10 , The plastic layer 30 is thinner than the paper layer 10 0.5 times. The present invention does not limit the two plastic layers 20, 30 to be provided on either side of the paper layer 10. In this embodiment, the plastic layer 20 is provided outside a paper container, and the plastic layer 30 is provided in the paper container. The plastic layer 20 can resist the external force and directly damage the paper layer 20.

The plastic layer 20 is made of polyethylene terephthalate (PET), polyethylene (PE), polystyrene (PS), polylactic acid (PLA) or any combination of the foregoing materials. The plastic layer 30 is made of low-density polyethylene (LDPE), high-density polyethylene (HDPE), polypropylene (PP), polyethylene (PE), polylactic acid (PLA), or any combination of the foregoing materials.

The paper container package 1 further includes a surrounding chamber 50 and an opening 60 communicating with the chamber 50. The opening 60 is provided with two connecting pieces 61 that can be folded relatively and connected to each other.

Please refer to FIG. 4, which shows another preferred embodiment of the present invention. The difference between the paper container package 2 and the previous preferred embodiment is that the opening 60 is provided with an external thread structure 62 for a detachable cover To cover.

Please refer to FIGS. 5-9. The present invention also provides a method for manufacturing paper container packaging, including the following steps: Step S1: Prepare a paper 70; Step S2: Make a hollow window 71 on the paper 70, the hollow The window 71 can be formed by cutting or punching by the punching mechanism 3; Step S3: A plastic coating layer 80 is coated on the inner side of one of the paper materials 70, further explaining that a plastic coating layer 80 is formed by heating and extruding by the extruder 4 The film 5, which is the plastic coating layer 80 covering the paper material 70, is cooled and rolled by the roller 6; Step S4: A plastic layer 90 is covered on one of the paper materials 70 to form A paper container substrate 91, in which the plastic layer 90 can be a plastic coating layer or a plastic foam layer. In this embodiment, the plastic layer 90 is a plastic foam layer; further description is formed by heating and extruding by the extruder 4 A film 7, which is the plastic layer 90 covering the paper material 70, is cooled and rolled by the roller 6; Step S5: Cut the paper container substrate 91 to cut out at least one paper container package 92. The number of the at least one paper container package 92 is plural. The plural paper container packages 92 are not limited to cups, but can also be boxes, bottles, etc.; further, the paper container base is cut by the cutter 8材91. Wherein, the window 71, the plastic layer 90 and the plastic coating layer 80 at least partially overlap in the thickness direction. With this, A variety of visual effects are presented at the window 71, and it also has a heat insulation effect. The order of step S4 and step S5 is not limited.

In further detail, the plastic foam layer can be first bonded to the paper 70 with a plastic coating and heat-resistant foam particles, and then baked and heated for foaming molding, or it can be formed on the paper by embossing (such as hot embossing). Paper 70. In addition, the plastic foam layer partially protrudes into the window 71 and is connected to the plastic layer 90 to provide a visual change effect at the window 71 and at the same time increase the supporting force in the thickness direction.

Please refer to FIG. 10, which shows another preferred embodiment of the present invention. The manufacturing method of the paper container package additionally covers a plastic foam layer 93 on the plastic layer 90 and partially overlaps the window 71. In this embodiment This can improve the waterproof and thermal insulation effects and provide visual changes.

To further illustrate, the above-mentioned plastic foam layer 93 can be colored and form a surface uneven structure.

1: paper container packaging

40: Windows

60: opening

61: Combination piece

Claims (11)

A paper container package comprising: a paper layer; two plastic layers, arranged on two opposite sides of the paper layer, wherein one of the plastic layers is a plastic coating film layer coated on the surface of the paper layer; wherein, Each of the plastic layer and the paper layer co-construct at least one window in the thickness direction, and the at least one window is transparent; wherein the paper layer is provided with at least one hollow part, the at least one hollow part and each of the The plastic layers overlap each other in the thickness direction to form the at least one window; wherein the two plastic layers are thermoplastic, and at least one plastic layer partially protrudes into the at least one hollow part and connects to the other plastic layer. The paper container package according to claim 1, wherein at least one of the two plastic layers is thicker than the paper layer, and at least one of the two plastic layers is thicker than 1.5 times the paper layer. The paper container package according to claim 1, wherein at least one of the two plastic layers is thinner than 0.5 times the paper layer. The paper container package according to claim 1, wherein the number of the at least one window is plural. The paper container package according to claim 1, wherein at least one of the two plastic layers has a greater rigidity than the paper layer. The paper container package according to claim 5, wherein the two plastic layers are fused to the paper layer; the two plastic layers are thermoplastic; one of the two plastic layers is thicker than the paper layer, and the other is thinner On the paper layer; at least one of the two plastic layers is 1.5 times thicker than the paper layer; at least one of the two plastic layers is thinner than 0.5 times the paper layer; the number of the at least one window is plural; the two At least one of the plastic layers is more rigid than the paper layer; one of the two plastic layers is polyethylene terephthalate (PET), polystyrene (PS), polyethylene (PE), polylactic acid (PLA) ) Or any of the above materials, the other is low density polyethylene (LDPE), high Density polyethylene (HDPE), polypropylene (PP), polyethylene (PE), polylactic acid (PLA) or any combination of the above materials. The paper container package according to any one of claims 1 to 6, further comprising an enclosure formed by an enclosure and an opening connected to the enclosure, and the opening is provided with two relatively foldable and interconnected Combine slices. The paper container package according to any one of claims 1 to 6, further comprising a surrounding chamber and an opening communicating with the chamber, and an external thread structure is provided on the periphery of the opening for a cover Removable cover. A manufacturing method of a paper container package includes the following steps: preparing a paper material; making a hollow window on the paper material; coating a plastic film layer on the inner side of one of the paper materials; One outer side is covered with a plastic layer to form a paper container substrate; the paper container substrate is cut to cut out at least one paper container package; wherein the window, the plastic layer and the plastic coating layer are at least in the thickness direction Partially overlapped. The method for manufacturing a paper container package according to claim 9, wherein the plastic layer is a plastic foam layer, and the plastic foam layer partially protrudes into the window and connects the plastic layer. According to the manufacturing method of the paper container package according to claim 9, a plastic foam layer is additionally covered on the plastic layer and partially overlaps the window.

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