Paper container and method for manufacturing a paper container

Abstract

The present application relates to a paper container. It comprises a paper layer including at least one basic pattern region, at least one pattern unit provided within the at least one basic pattern region, each including a plurality of perforated structures and at least one reinforcing structure, the at least one reinforcing structure located between adjacent perforated structures, at least one waterproof translucent layer, provided on at least one side of the paper layer and closing the plurality of perforated structures, the plurality of perforated structures and each of the waterproof translucent layer overlapping each other in the thickness direction to form at least one viewing window. The present application also relates to a method for manufacturing a paper container, thereby providing a reinforcing structure, the structure surrounding the perforated structure having high structural strength and being less susceptible to deformation by external forces.

Description

Technical Field

[0001] This application relates to a paper container and a method for manufacturing a paper container, and particularly to a structural improvement in the technology of a paper container for containing articles or liquids and its manufacturing method.

Background Art

[0002] Common containers such as plastic bottles, paper containers, and lunch boxes are mainly used for containing liquids and articles. Paper containers usually have through-holes opened in the processing process so that users can observe the internal structure through the through-holes.

[0003] As shown in FIG. 11, a paper container member 100 according to the prior art is provided with a viewing window 101 and a non-watermark engraving structure 102. The viewing window 101 is configured as a continuously extending pattern, and the viewing window 101 at least partially surrounds the non-watermark engraving structure 102. Also, in the manufacturing process of the paper container member 100, after the viewing window 101 is opened, the waste separated within the viewing window 101 is pushed out from the viewing window 101 by an extrusion unit.

[0004] However, since the non-watermark engraving structure 102 has only one support portion 103, the supporting force is insufficient. As a result, when the extrusion unit pushes out the waste, the non-watermark engraving structure 102 undergoes rocking and torsional deformation with respect to the one support portion 103. Therefore, it is difficult to maintain the integrity of the viewing window 101 in the manufacturing process. Also, the paper container member 100 is likely to cause quality defects due to the torsional deformation of the non-watermark engraving structure 102 even in the coating process.

[0005] Therefore, in order to solve the above problems, it is necessary to provide a paper container and a method for manufacturing a paper container.

Summary of the Invention

Problems to be Solved by the Invention

[0006] The main objective of this invention is to provide a paper container and a method for manufacturing a paper container that provides a reinforcing structure, which gives the structure surrounding the openwork structure high structural strength and makes it resistant to deformation due to the action of external forces. [Means for solving the problem]

[0007] To achieve the above objective, the present invention provides a paper container comprising: a paper layer including at least one basic pattern region; at least one pattern unit provided within the at least one basic pattern region, each including a plurality of perforated structures and at least one reinforcing structure, wherein the at least one reinforcing structure is provided between adjacent perforated structures among the plurality of perforated structures and traverses adjacent perforated structures among the plurality of perforated structures; and at least one waterproof translucent layer provided on at least one side of the paper layer and closing the plurality of perforated structures, wherein the plurality of perforated structures and each of the waterproof translucent layers overlap each other in the thickness direction to form at least one viewing window.

[0008] As a paper container of the present invention, the at least one pattern unit constitutes a character, and the shape constituted by each basic pattern region corresponds to the shape of the corresponding pattern unit.

[0009] As a single paper container of the present invention, each of the openwork structures includes strokes or radicals, and the plurality of openwork structures and each of the reinforcing structures constitute the characters.

[0010] As one paper container of the present application, the paper layer is provided with a row of non-perforated structures within the at least one basic pattern region, the plurality of perforated structures surround the non-perforated structure, at least two of the perforated structures extend circumferentially around the non-perforated structure, and the non-perforated structure is connected to the at least one reinforcing structure.

[0011] As one paper container of the present invention, each pattern unit includes a plurality of reinforcing structures, and the plurality of reinforcing structures are connected to one another.

[0012] In one paper container of the present invention, each of the perforated structures is larger than the at least one reinforcing structure in the extension direction of the at least one reinforcing structure.

[0013] One paper container of the present invention includes a plurality of the waterproof light-transmitting layers, each of which is provided on opposite sides of the paper layer and each of which closes opposite sides of the perforated structure.

[0014] One paper container of the present application includes a wall and a storage chamber, the wall constituting the storage chamber, and the wall includes the paper layer and the at least one waterproof light-transmitting layer.

[0015] As one paper container of the present application, the paper layer includes a plurality of basic pattern regions, the plurality of basic pattern regions are spaced apart, the paper container includes a plurality of pattern units, each pattern unit is provided within one of the basic pattern regions, the spacing between two adjacent perforated structures of each pattern unit is smaller than the spacing between two adjacent basic pattern regions, the paper layer has a non-perforated structure within at least one basic pattern region, and the plurality of perforated structures surround the non-perforated structure, with at least two of the perforated structures The structure extends circumferentially over the non-perforated structure, the non-perforated structure is connected to the at least one reinforcing structure, each pattern unit includes a plurality of the reinforcing structures, the plurality of reinforcing structures are connected to one another, and in the direction of extension of the at least one reinforcing structure, each perforated structure is larger than the at least one reinforcing structure, the paper container includes a plurality of waterproof translucent layers, each of the plurality of waterproof translucent layers is provided on opposite sides of the paper layer and each of the opposite sides of the perforated structure, and each of the waterproof translucent layer is a plastic coating layer coated on the paper layer.

[0016] To achieve the above objectives, the present invention also provides a method for manufacturing a paper container, comprising the steps of: preparing a paper material defining at least one basic pattern region; preparing a cutting unit including a cutter die; cutting a pattern unit, that is, cutting at least one pattern unit provided in the paper material within the at least one basic pattern region with the cutter die of the cutting unit, wherein each pattern unit includes a plurality of openwork structures and at least one reinforcing structure, the at least one reinforcing structure provided between adjacent openwork structures among the plurality of openwork structures and traversing adjacent openwork structures; and preparing at least one waterproof light-transmitting layer covering at least one side of the paper layer and closing the openwork structures, wherein the shape of the cutter die corresponds to the openwork structures. [Brief explanation of the drawing]

[0017] [Figure 1] This is a perspective view of a first preferred embodiment of the present application. [Figure 2] This is a cross-sectional view of line AA in Figure 1. [Figure 3] This is a cross-sectional view of line BB in Figure 1. [Figure 4] This is a partially enlarged view of a first preferred embodiment of the present application. [Figure 5] This is a perspective view of a second preferred embodiment of the present application. [Figure 6] This is a flowchart of a first preferred embodiment of the present invention. [Figure 7] This is a manufacturing flowchart of a first preferred embodiment of the present invention. [Figure 8] This is a schematic diagram of a paper container substrate according to a first preferred embodiment of the present application. [Figure 9] This is a schematic diagram of a paper container packaging according to a first preferred embodiment of the present application. [Figure 10] This is a schematic diagram of a cutting unit according to a first preferred embodiment of the present application. [Figure 11] This is a schematic diagram of a paper container component of the prior art of the present invention.

Best Mode for Carrying Out the Invention

[0018] Hereinafter, with reference to the drawings and specific examples, those skilled in the art can better understand and implement the present application. However, the examples given are not limitations on the present application. One or at least one prefixed to the nouns described in the specification is not a limitation on the quantity, and there may be several if necessary. Since this change in quantity is also within the scope to be protected, it will be explained first.

[0019] Figs. 1 to 4 show the first preferred embodiment of the present application. The paper container 1 of the present application includes a paper layer 11, at least one pattern unit 40, 40', and at least one waterproof and light-transmitting layer 60, 60'.

[0020] The paper layer 11 includes at least one basic pattern area 30, 30'. The at least one pattern unit 40, 40' is provided within the at least one basic pattern area 30, 30'. Each pattern unit 40, 40' includes a plurality of watermark engraving structures 41a, 41b, 41c, 41d, 41e and at least one reinforcing structure 50. The at least one reinforcing structure 50 is provided between two adjacent ones of the plurality of watermark engraving structures 41a, 41b, 41c, 41d, 41e and crosses two adjacent ones of the plurality of watermark engraving structures 41a, 41b, 41c, 41d, 41e. The at least one waterproof and light-transmitting layer 60, 60' is provided on at least one side of the paper layer 11 and closes the plurality of watermark engraving structures 41a, 41b, 41c, 41d, 41e. The plurality of watermark engraving structures 41a, 41b, 41c, 41d, 41e and each waterproof and light-transmitting layer 60, 60' overlap each other in the thickness direction to form at least (a plurality of) peepholes 80. Due to each of the reinforcing structures 50, each of the pattern units 40, 40' can maintain its complete shape. Specifically, due to each of the reinforcing structures 50, the parts adjacent to the plurality of embossed structures 41a, 41b, 41c, 41d, 41e are less likely to deform under force. And the interior of the paper container 1 can be observed through each of the viewing windows 80. The paper container 1 can accommodate liquids and articles.

[0021] The at least one pattern unit 40, 40' forms characters, and the shapes formed by the respective basic pattern regions 30, 30' correspond to the shapes of the corresponding pattern units 40, 40'. The characters can be Chinese characters, Japanese characters, Korean characters, or other characters. For example, the Chinese character "茶" and the Japanese character "の" shown in Fig. 4 are included, but are not limited thereto. Each of the pattern units 40, 40' may be a designed figure, pattern, etc. Specifically, each of the embossed structures 41a, 41b, 41c, 41d, 41e includes strokes or radicals, and the plurality of embossed structures 41a, 41b, 41c, 41d, 41e and each of the reinforcing structures 50 form the characters. The stroke is as shown in the embossed structure 41a, and the radical is as shown in the embossed structures 41b, 41c, but is not limited thereto. Specifically, the basic pattern region 30' can form a continuously extending stroke, for example, the Japanese character "の", and the at least one reinforcing structure 50 crosses this continuously extending stroke, whereby the plurality of embossed structures 41d, 41e form a non-continuously extending "の". Further, the at least one reinforcing structure 50 may cross adjacent radicals and between radicals and strokes, but is not limited thereto. Thus, the structural strength of the locations adjacent to the plurality of embossed structures is improved.

[0022] The paper layer 11 is provided with non-perforated structures 13, 13' within the at least one basic pattern region 30, 30', and the plurality of perforated structures 41a, 41b, 41c, 41d, 41e include the non-perforated structures 13, 13', and at least two of the perforated structures extend circumferentially to the non-perforated structures 13, 13', for example, the plurality of perforated structures 41b, 41c extend circumferentially to the non-perforated structure 13, and the plurality of perforated structures 41d, 41e extend circumferentially to the non-perforated structure 13', and the non-perforated structures 13, 13' are connected to the at least one reinforcing structure 50 to strongly support the non-perforated structures 13, 13' which would otherwise have weak support. Preferably, each pattern unit 40 includes a plurality of reinforcing structures 50, the plurality of reinforcing structures 50 being connected to one another, and the plurality of reinforcing structures 50 enable the plurality of pattern units 40, 40' to maintain their complete shape and make the surrounding structures less susceptible to deformation by external forces.

[0023] In the extension direction A of the at least one reinforcing structure 50, each of the openwork structures 41a, 41b, 41c, 41d, 41e is larger than the at least one reinforcing structure 50, thereby maintaining the integrity of the pattern units 40, 40' and facilitating recognition of the original design shape.

[0024] The paper layer 11 includes a plurality of basic pattern areas 30, 30', which are spaced apart, and the paper container 1 includes a plurality of pattern units 40, 40', each of which is located within a single basic pattern area, and the spacing between two adjacent cutout structures 41a, 41b, 41c, 41d, 41e of each pattern unit 40, 40' is smaller than the spacing between two adjacent basic pattern areas 30, 30'. Specifically, each of the pattern units 40, 40' constitutes a single character, but in other embodiments, it may constitute a single figure or pattern.

[0025] The paper container 1 includes a plurality of waterproof light-transmitting layers 60, 60', each provided on opposite sides of the paper layer 11 and closing off opposite sides of the perforated structures 41a, 41b, 41c, 41d, 41e, respectively, providing waterproofing and light transmission functions. Each of the waterproof light-transmitting layers 60, 60' is a plastic coating layer coated onto the paper layer 11, thereby making it easy to process and resistant to peeling. In other embodiments, each of the waterproof light-transmitting layers 60, 60' can be attached to or adhered to the paper layer 11, or covered onto the paper layer 11 by spraying.

[0026] Each of the waterproof light-transmitting layers 60, 60' is made of polyethylene terephthalate (PET), polyethylene (PE), polystyrene (PS), polylactic acid (PLA), or any mixture thereof. The plastic layer 30 is made of low-density polyethylene (LDPE), high-density polyethylene (HDPE), polypropylene (PP), polyethylene (PE), polylactic acid (PLA), or any mixture thereof.

[0027] Specifically, the paper container includes a wall portion 10 and a storage chamber 20, the wall portion 10 constitutes the storage chamber 20, and the wall portion 10 includes the paper layer 11 and the at least one waterproof light-transmitting layer 60, 60'.

[0028] In this example, the paper container 1 is a cup.

[0029] Figure 5 shows a second preferred embodiment of the present invention, in which the paper container 1' is a box body such as a lunch box, but is not limited thereto.

[0030] Refer to Figures 6 to 10. The present invention also provides a method for manufacturing a paper container, which includes the following steps. Step S1: Prepare a paper material 70 that defines at least one basic pattern area 30, 30'. Step S2: Prepare the cutting unit 2, which includes the cutter die 3. Step S3: Cutting the pattern units 40, 40', that is, cutting at least one pattern unit 40, 40' provided within the at least one basic pattern area 30, 30' in the paper material with the cutter die 3 of the cutting unit 2, each pattern unit 40, 40' includes a plurality of openwork structures 41a, 41b, 41c, 41d, 41e and at least one reinforcing structure 50, the at least one reinforcing structure 50 provided between adjacent openwork structures 41a, 41b, 41c, 41d, 41e and traversing adjacent openwork structures 41a, 41b, 41c, 41d, 41e. Step S4: Prepare at least one waterproof, light-transmitting layer 60, 60' to cover at least one side of the paper layer 11 and to close the perforated structures 41a, 41b, 41c, 41d, 41e to form the container base material 91, and further heat and extrude with the extruder 4 to form a film 5, the film 5 being the waterproof, light-transmitting layer 60, 60' covering the paper material 70. Cool and roll with the roller 6. Step S5: The paper container base material 91 is cut to obtain at least one paper container packaging 92. The number of at least one paper container packaging 92 may be multiple, and the multiple paper container packaging 92 may form the paper container 1 as shown in Figure 1, or the paper container may be box-shaped (e.g., lunch box), but is not limited to these. Alternatively, it may be a bottle-shaped paper container. Furthermore, the paper container base material 91 is cut with a cutting machine 8. Here, the shape of the cutter die 3 corresponds to the perforated structures 41a, 41b, 41c, 41d, 41e. This allows the perforated structures 41a, 41b, 41c, 41d, 41e to be formed in a simple step, and the portion enclosed by the perforated structures 41a, 41b, 41c, 41d, 41e during the manufacturing process is less susceptible to deformation by external forces and has high structural strength.

[0031] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is as defined in the claims. [Explanation of symbols]

[0032] 1, 1' Paper container 10 Wall section 11 paper layer 13, 13' Non-openwork structure 20 Confinement Rooms 30, 30' Basic pattern area 40, 40' Pattern Unit 41a, 41b, 41c, 41d, 41e: Openwork structure 50 Reinforcement structure 60, 60' waterproof transparent layer 70 Paper materials 80 Peephole 2 Cutting Unit 3 cutter dice 4. Extruder 5 Film 6 Laura 8. Cutting machine 91 Paper container base material 92 Paper containers and packaging A Extension direction S1-S5 Steps Conventional technology 100 Paper container components 101 Peephole 102 Non-openwork structure 103 Support part

Claims

1. It is a paper container, A paper layer containing at least one basic pattern region, A pattern unit provided within the at least one basic pattern region, each comprising a plurality of openwork structures and at least one reinforcing structure, wherein the at least one reinforcing structure is provided between adjacent openwork structures among the plurality of openwork structures, and at least one pattern unit traversing adjacent openwork structures among the plurality of openwork structures, A waterproof light-transmitting layer provided on at least one side of the paper layer and closing the plurality of perforated structures, wherein the plurality of perforated structures and each of the waterproof light-transmitting layers overlap each other in the thickness direction to form at least one viewing window, and includes at least one waterproof light-transmitting layer. Paper container.

2. The paper container according to claim 1, wherein the at least one pattern unit constitutes a character, and the shape formed by each basic pattern region corresponds to the shape of the corresponding pattern unit.

3. The paper container according to claim 2, wherein each of the openwork structures includes a stroke or radical, and the plurality of openwork structures and each of the reinforcing structures constitute the character.

4. The paper container according to claim 1, wherein the paper layer has a row of non-perforated structures within the at least one basic pattern region, the plurality of perforated structures surround the non-perforated structures, at least two of the perforated structures extend circumferentially around the non-perforated structures, and the non-perforated structures are connected to the at least one reinforcing structure.

5. The paper container according to claim 1, wherein each pattern unit includes a plurality of reinforcing structures, and the plurality of reinforcing structures are connected to one another.

6. The paper container according to claim 1, wherein each of the perforated structures is larger than the at least one reinforcing structure in the extension direction of the at least one reinforcing structure.

7. The paper container according to claim 1, comprising a plurality of the waterproof light-transmitting layers, each of which is provided on opposite sides of the paper layer and each of which closes opposite sides of the perforated structure.

8. The paper container according to claim 1, comprising a wall and a storage chamber, wherein the wall constitutes the storage chamber, and the wall includes the paper layer and the at least one waterproof light-transmitting layer.

9. The paper layer includes a plurality of basic pattern regions, the plurality of basic pattern regions are spaced apart, the paper container includes a plurality of pattern units, each pattern unit is located within one of the basic pattern regions, the spacing between two adjacent perforated structures of each pattern unit is smaller than the spacing between two adjacent basic pattern regions, the paper layer has non-perforated structures within at least one basic pattern region, the plurality of perforated structures surround the non-perforated structure, and at least two of the perforated structures are non-perforated The paper container according to claim 3, wherein the non-perforated structure extends in the circumferential direction of the structure, the non-perforated structure is connected to the at least one reinforcing structure, each pattern unit comprises a plurality of the reinforcing structures, the plurality of reinforcing structures are connected to one another, each perforated structure is larger than the at least one reinforcing structure in the direction of extension of the at least one reinforcing structure, the paper container comprises a plurality of waterproof translucent layers, each of the plurality of waterproof translucent layers is provided on opposite sides of the paper layer and each of the opposite sides of the perforated structure, and each of the waterproof translucent layer is a plastic coating layer coated on the paper layer.

10. A method for manufacturing paper containers, The steps include: preparing paper material that defines at least one basic pattern area, The steps include preparing a cutting unit including a cutter die, A step of cutting a pattern unit, that is, cutting at least one pattern unit provided within the at least one basic pattern area in the paper material with the cutter die of the cutting unit, wherein each pattern unit includes a plurality of openwork structures and at least one reinforcing structure, the at least one reinforcing structure provided between adjacent openwork structures and traversing adjacent openwork structures, The process includes the step of providing at least one waterproof light-transmitting layer that covers at least one side of the paper layer and closes the perforated structure, The shape of the cutter die corresponds to the openwork structure. A method for manufacturing paper containers.

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