Printing manufacturing process of Christmas tree and Christmas tree

文档序号:1221363 发布日期:2020-09-08 浏览:27次 中文

阅读说明:本技术 一种圣诞树的印刷制作工艺及圣诞树 (Printing manufacturing process of Christmas tree and Christmas tree ) 是由 马锐 叶哲 金强维 陈喜 于 2020-06-24 设计创作,主要内容包括:本发明涉及装饰品技术领域,公开了一种圣诞树的印刷制作工艺及圣诞树,圣诞树的印刷制作工艺包括以下步骤:枝叶的制备:对枝叶纸张印刷防水层,然后将印刷防水层的枝叶纸张制成枝叶;树干的制备:对树干纸张印刷防水层,然后将印刷防水层的树干纸张制成管状的树干;底盆的制备:对纸板印刷防水层,然后进行模切,将模切得到的底盆纸板拼接成型;将制备的枝叶,树干以及底盆进行组装,以得到圣诞树。该圣诞树的印刷制作工艺,在枝叶、树干以及底盆的制作过程中均印刷防水层,能够适应潮湿以及雨天;枝叶、树干以及底盆均采用纸质结构制成,对人体无伤害,属于绿色制作,纸质结构可以回收再造,原料属于再生资源,可以自然降解,对环境无污染。(The invention relates to the technical field of ornaments, and discloses a printing and manufacturing process of a Christmas tree and the Christmas tree, wherein the printing and manufacturing process of the Christmas tree comprises the following steps: preparing branches and leaves: printing a waterproof layer on the branch and leaf paper, and then manufacturing the branch and leaf paper printed with the waterproof layer into branches and leaves; preparation of the tree trunk: printing a waterproof layer on trunk paper, and then manufacturing the trunk paper printed with the waterproof layer into a tubular trunk; preparing a bottom basin: printing a waterproof layer on a paper board, then carrying out die cutting, and splicing and forming the bottom basin paper board obtained by die cutting; and assembling the prepared branches and leaves, the prepared trunk and the prepared bottom pot to obtain the Christmas tree. According to the printing manufacturing process of the Christmas tree, the waterproof layers are printed in the manufacturing processes of the branches, the leaves, the trunk and the bottom basin, and the printing manufacturing process can adapt to moist and rainy days; branches, leaves, trunks and bottom basins are all made of paper structures, are harmless to human bodies, belong to green manufacturing, can be recycled and reproduced through the paper structures, are made of renewable resources, can be naturally degraded, and are free of pollution to the environment.)

1. A printing manufacturing process of a Christmas tree is characterized by comprising the following steps:

preparing branches and leaves: printing a waterproof layer on the branch and leaf paper, and then manufacturing the branch and leaf paper printed with the waterproof layer into branches and leaves;

preparation of the tree trunk: printing a waterproof layer on trunk paper, and then manufacturing the trunk paper printed with the waterproof layer into a tubular trunk;

preparing a bottom basin: printing a waterproof layer on a paper board, then carrying out die cutting, and splicing and forming the bottom basin paper board obtained by die cutting;

and assembling the prepared branches and leaves, the prepared trunk and the prepared bottom basin to obtain the Christmas tree.

2. The process of claim 1, further comprising a step of making branch and leaf paper before the step of making branches and leaves.

3. The process of claim 2, wherein the step of making the paper sheet includes a step of dyeing.

4. The process of claim 1, wherein the step of making the leaf paper printed with the waterproof layer into the leaves comprises:

cutting the branch and leaf paper printed with the waterproof layer to form a plurality of strip-shaped structures;

cutting two sides of each strip-shaped structure in the length direction into a plurality of rectangular structures, wherein the rectangular structures on the two sides of each strip-shaped structure are arranged at intervals to obtain pine needle paper;

and winding the obtained pine needle paper on a rod-shaped structure to obtain the branches and leaves.

5. The process of claim 1, wherein the step of forming the stem comprises:

laying sand pipe paper between two layers of laid kraft paper, and rolling the two layers of kraft paper and sand pipe paper into a tubular structure to form a tubular trunk.

6. The process of printing and making a christmas tree according to any one of claims 1-5, wherein said printed water barrier comprises: printing water-based varnish to form a waterproof layer.

7. A christmas tree, comprising:

a bottom basin (1);

the trunk (2) extends along the vertical direction, and the lower end of the trunk (2) is arranged in the bottom basin (1); and

the tree trunk comprises a plurality of branches and leaves (3), wherein the branches and leaves (3) comprise pine leaves (31) and rod-shaped structures, the pine leaves (31) are arranged on the rod-shaped structures, and the rod-shaped structures are connected with the upper end of the tree trunk (2);

the pine leaves (31), the trunk (2) and the bottom basin (1) are all made of waterproof paper.

8. The printing and manufacturing process of the Christmas tree according to claim 7, wherein the pine needle (31) is made of pine needle paper (30), the pine needle paper (30) is a strip-shaped structure, a plurality of rectangular structures are arranged on two sides of the strip-shaped structure, the rectangular structures on two sides of the strip-shaped structure are arranged at intervals, and the pine needle paper (30) is wound on the rod-shaped structure.

9. Printing process for christmas trees according to claim 7, wherein the trunk (2) is a tubular structure, the trunk (2) comprising an outer layer structure (21), an inner layer structure (22) and an intermediate layer structure (23) arranged between the outer layer structure (21) and the inner layer structure (22).

10. The process for printing and making a Christmas tree according to claim 7, wherein the bottom basin (1) is made of corrugated paper.

Technical Field

The invention relates to the technical field of ornaments, in particular to a printing and manufacturing process of a Christmas tree and the Christmas tree.

Background

The Christmas tree is used as an important decoration in the traditional festivals of the western countries, the demand of articles is huge, the requirements of people are higher and higher while the modern life is continuously improved, and the good appearance plasticity of the simulation Christmas tree gradually replaces the natural pine and cypress Christmas tree. However, the current simulated Christmas tree is mostly made of pine needles made of PVC materials, the trunk and the base are mostly made of PP and other plastic products through injection molding, a large amount of waste gas is generated in the whole material forming and processing injection molding process, particularly, hydrogen chloride gas harmful to human bodies is generated in the PVC processing, various additives added to the PVC products at normal temperature contain trace lead, o-benzene and other harmful components, and the PVC and PP materials and the like have high chemical stability, good corrosion resistance, difficult degradation in the natural world and no environmental friendliness, so the PVC and PP products become the development bottleneck of the plastic Christmas tree.

With the advocation and improvement of the global environment protection system, more and more countries implement plastic limitation, and green, environment-friendly, degradable and easily-recycled materials become the development direction of future ornaments. The resource consumption and pollution generated by PVC, PP and other plastic materials in the aspects of production, processing, recovery and the like are obvious, and the discarded plastic garbage is difficult to naturally degrade and has obvious environmental pollution. From the aspects of environmental protection and resource saving, a manufacturing process which can be recycled and naturally degraded can make up functions which cannot be achieved by plastic materials. In addition, as is well known, the use decoration time of the Christmas tree is two weeks and three weeks, and the use decoration time of the Christmas tree is one month to two months, the characteristic of short use period is fully utilized to develop a paper Christmas tree which can be used for short-term decoration, the paper material is easy to recover and reproduce, the resource saving is well facilitated, and in order to enable the Christmas tree to adapt to the outdoor environment, the Christmas tree is set to have a waterproof function so as to be convenient to adapt to the outdoor humid environment and rainy days.

Disclosure of Invention

The invention aims to provide a printing manufacturing process of a Christmas tree and the Christmas tree, which are manufactured by adopting a paper structure, do not generate waste gas and pungent smell in the production process, are harmless to human bodies, belong to green manufacturing, can be recycled and reproduced by the paper structure, belong to renewable resources, can be naturally degraded, and have no pollution to the environment; all print the waterproof layer in the manufacturing process of branch and leaf, trunk and end basin, can be applicable to outdoor weather, can adapt to humid environment and rainy day.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a printing and manufacturing process of a Christmas tree, which comprises the following steps:

preparing branches and leaves: printing a waterproof layer on the branch and leaf paper, and then manufacturing the branch and leaf paper printed with the waterproof layer into branches and leaves;

preparation of the tree trunk: printing a waterproof layer on trunk paper, and then manufacturing the trunk paper printed with the waterproof layer into a tubular trunk;

preparing a bottom basin: printing a waterproof layer on a paper board, then carrying out die cutting, and splicing and forming the bottom basin paper board obtained by die cutting;

and assembling the prepared branches and leaves, the prepared trunk and the prepared bottom basin to obtain the Christmas tree.

The printing and manufacturing process of the Christmas tree comprises the steps of manufacturing branches and leaves, a trunk and a bottom basin, then assembling the obtained branches and leaves, the trunk and the bottom basin to obtain the Christmas tree, wherein the branches and leaves, the trunk and the bottom basin are all made of paper structures, no waste gas and pungent smell are generated in the production process, no harm is caused to human bodies, the Christmas tree belongs to green manufacturing, the paper structures can be recycled and reproduced, the raw materials belong to renewable resources, the Christmas tree can be naturally degraded, and no pollution is caused to the environment; all print the waterproof layer in the manufacturing process of branch and leaf, trunk and end basin, can be applicable to outdoor weather, can adapt to moist and rainy day.

As a preferable scheme of the printing and manufacturing process of the christmas tree, before the preparation step of the branches and leaves, a manufacturing step of branch and leaf paper is further included.

Before the preparation step of the branches and leaves, the branch and leaf paper is firstly prepared through the preparation step of the branch and leaf paper.

As a preferable scheme of the printing and manufacturing process of the christmas tree, the manufacturing step of the branch and leaf paper comprises a dyeing step.

The method has the advantages that the dyeing step is included in the process of manufacturing the branch and leaf paper, the branch and leaf paper can be dyed into green through the dyeing step, the simulation degree of the branches and leaves of the manufactured Christmas tree is high, and the visual effect is good.

As a preferable scheme of the printing and manufacturing process of the christmas tree, the step of manufacturing the branch and leaf paper printed with the waterproof layer into the branch and leaf comprises the following steps:

cutting the branch and leaf paper printed with the waterproof layer to form a plurality of strip-shaped structures;

cutting two sides of each strip-shaped structure in the length direction into a plurality of rectangular structures, wherein the rectangular structures on the two sides of each strip-shaped structure are arranged at intervals to obtain pine needle paper;

and winding the obtained pine needle paper on a rod-shaped structure to obtain the branches and leaves.

The branches and leaves can be obtained through the steps, and the preparation method is simple.

As a preferable scheme of the printing and manufacturing process of the christmas tree, the trunk manufacturing step includes:

laying sand pipe paper between two layers of laid kraft paper, and rolling the two layers of kraft paper and sand pipe paper into a tubular structure to form a tubular trunk.

As a preferable mode of the printing and manufacturing process of the christmas tree, the waterproof treatment includes: printing water-based varnish to form a waterproof layer.

Through printing aqueous gloss oil to form the waterproof layer, can play waterproof effect, but also can reduce because of the problem that the sunlight insolate fades.

The invention also provides a christmas tree comprising:

a bottom basin;

the trunk extends along the vertical direction, and the lower end of the trunk is arranged in the bottom basin; and

the branches and the leaves comprise pine leaves and a rod-shaped structure, the pine leaves are arranged on the rod-shaped structure, and the rod-shaped structure is connected with the upper end of the trunk;

the pine leaves, the trunk and the bottom basin are all made of waterproof paper.

The pine leaves, the trunk and the bottom basin of the Christmas tree are all made of waterproof paper, no waste gas and pungent smell are generated in the production process, no harm is caused to human bodies, the Christmas tree belongs to green manufacture, a paper structure can be recycled and reproduced, raw materials belong to renewable resources, the Christmas tree can be naturally degraded, and no pollution is caused to the environment; but also has the waterproof function, can be suitable for outdoor weather, and can adapt to moist and rainy days.

As a preferred scheme of the above christmas tree, the pine needles are made of pine needle paper, the pine needle paper is in a strip-shaped structure, a plurality of rectangular structures are arranged on two sides of the strip-shaped structure, the rectangular structures on the two sides of the strip-shaped structure are arranged at intervals, and the pine needle paper is wound on the rod-shaped structure.

The pine needle of this structure simple structure prepares easily, and the simulation effect is good moreover.

As a preferable scheme of the above christmas tree, the trunk is a tubular structure, and the trunk includes an outer layer structure, an inner layer structure, and an intermediate layer structure disposed between the outer layer structure and the inner layer structure.

The tree trunk is of a tubular structure, the supporting effect is good, and the tubular structure formed by the multilayer structure is convenient for independent processing and manufacturing of each layer of structure; the arrangement of the middle layer structure plays a better supporting role.

As a preferred scheme of the Christmas tree, the bottom basin is made of corrugated paper.

The bottom basin is made of corrugated paper, so that the cost is low, and the supporting effect is good.

The invention has the beneficial effects that:

the printing manufacturing process of the Christmas tree comprises the steps of manufacturing branches and leaves, a trunk and a bottom basin, then assembling the obtained branches and leaves, the trunk and the bottom basin to obtain the Christmas tree, wherein the branches and leaves, the trunk and the bottom basin are all made of paper structures, waste gas and pungent smell are not generated in the production process, the Christmas tree is harmless to a human body and belongs to green manufacturing, the paper structures can be recycled and reproduced, raw materials belong to renewable resources and can be naturally degraded, and the Christmas tree is free of pollution to the environment; all print the waterproof layer in the manufacturing process of branch and leaf, trunk and end basin, can be applicable to outdoor weather, can adapt to moist and rainy day.

According to the Christmas tree, the pine leaves, the trunk and the bottom basin are all made of waterproof paper, waste gas and pungent smell are not generated in the production process, the Christmas tree is harmless to a human body and belongs to green manufacture, a paper structure can be recycled and reproduced, raw materials belong to renewable resources and can be naturally degraded, and no pollution is caused to the environment; but also has the waterproof function, can be suitable for outdoor weather, and can adapt to moist and rainy days.

Drawings

FIG. 1 is a schematic diagram of a Christmas tree provided by the present invention;

FIG. 2 is a schematic structural view of pine needle paper provided by the present invention;

FIG. 3 is a cross-sectional view of a trunk provided by the present invention;

fig. 4 is a flow chart of a printing process for making a christmas tree according to the present invention.

In the figure:

1. a bottom basin; 11. a box body; 12. a box cover;

2. a tree trunk; 21. an outer layer structure; 22. an inner layer structure; 23. an intermediate layer structure;

3. branches and leaves; 30. pine needle paper; 31. pine needle.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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 invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The embodiment provides a christmas tree, as shown in fig. 1-3, including end basin 1, trunk 2 and many branches and leaves 3, trunk 2 extends along vertical direction, and the lower extreme of trunk 2 sets up in end basin 1, and branches and leaves 3 include pine leaf 31 and rod-like structure, and pine leaf 31 sets up on rod-like structure, and rod-like structure links to each other with the upper end of trunk 2, and pine leaf 31, trunk 2 and end basin 1 are made by waterproof paper.

The pine leaves 31, the trunk 2 and the bottom basin 1 of the Christmas tree are all made of waterproof paper, no waste gas and pungent smell are generated in the production process, no harm is caused to human bodies, the Christmas tree belongs to green manufacture, the paper structure can be recycled and reproduced, the raw materials belong to renewable resources, the Christmas tree can be naturally degraded, and no pollution is caused to the environment; but also has the waterproof function, can be suitable for outdoor weather, and can adapt to moist and rainy days.

As shown in fig. 2, the pine needle 31 is made of pine needle paper 30, the pine needle paper 30 is a strip-shaped structure, two sides of the strip-shaped structure are provided with a plurality of rectangular structures, the rectangular structures on the two sides of the strip-shaped structure are arranged at intervals, and the pine needle paper 30 is wound on a rod-shaped structure to obtain branches and leaves 3 of the christmas tree. The pine needle 31 with the structure has simple structure and is easy to prepare.

Optionally, the rod-shaped structure is an iron wire, so that the cost is low and the manufacturing is convenient. In this embodiment, the rod-shaped structure is made of a green DIY wire with a diameter of 1.5MM specially used for handcraft decoration.

Optionally, the trunk 2 is a tubular structure, and the supporting effect is good.

In particular, as shown in fig. 3, the trunk 2 comprises an outer layer structure 21, an inner layer structure 22 and an intermediate layer structure 23 arranged between the outer layer structure 21 and the inner layer structure 22. The trunk 2 is a tubular structure formed by a plurality of layers of tubular structures, so that each layer of structure can be processed independently and is convenient to manufacture; the provision of the intermediate layer structure 23 provides a better support.

Alternatively, the outer layer 21 and the inner layer 22 are made of waterproof paper, which can be waterproof to both the inner and outer surfaces of the trunk 2. In this embodiment, the outer layer structure 21 and the inner layer structure 22 are made of kraft paper, and the intermediate layer structure 23 is made of sand pipe paper.

As shown in fig. 1, the bottom pot 1 includes a box body 11 and a box cover 12 covering the box body 11, a mounting hole is provided on the box cover 12, and the trunk 2 extends into the bottom pot 1 through the mounting hole. The end basin 1 of this structure can cover box body 11 through lid 12, and the outward appearance effect is better, through setting up the mounting hole on lid 12 to in trunk 2 can insert end basin 1, be convenient for install trunk 2 in end basin 1.

Preferably, the mounting hole sets up in the central point of lid 12 for end basin 1 can be the atress even, makes christmas tree's stationarity better.

Preferably, the bottom basin 1 is made of corrugated paper, so that the cost is low, and the supporting effect is good.

The embodiment also provides a printing and manufacturing process of a christmas tree, which is used for manufacturing the above-mentioned christmas tree, as shown in fig. 4, and comprises the following steps:

preparation of branches and leaves 3: and printing a waterproof layer on the branch and leaf paper, and then manufacturing the branch and leaf paper printed with the waterproof layer into branches and leaves 3.

Specifically, before the preparation step of the branches and leaves 3, a preparation step of branch and leaf paper is further included to obtain the branch and leaf paper. The manufacturing steps of the branch and leaf paper comprise a dyeing step, and the branch and leaf paper can be dyed into green through the dyeing step, so that the simulation degree of the prepared branches and leaves 3 of the Christmas tree is high, and the visual effect is good. In the embodiment, the color of the branch and leaf paper is close to that of pine dark green CMYK (C50/M18/Y90/K75), the gram weight of the branch and leaf paper is 157g of cardboard, and the pine leaves 31 prepared under the fixed weight have good stiffness and certain flexibility.

Then to the waterproof layer of branch and leaf paper printing, specifically for print aqueous gloss oil on branch and leaf paper to form the waterproof layer, and then make the branch and leaf 3 of christmas tree play waterproof effect, but also can reduce because of the problem that the sunlight insolate the fade.

Specifically, the water-based varnish with the thickness of 0.02MM is printed on the inner surface and the outer surface of the branch and leaf paper through printing equipment. The main agent is filming resin, usually synthetic resin, the assistant is curing agent, surfactant, defoaming agent, dispersant, plasticizer, etc. and most of the assistant is water. The viscosity of the water-based gloss oil is controlled to be about 18 seconds, the depth of the anilox roller is 20 mu m, and the using amount of the water-based gloss oil is about 6-8 g/square meter. A layer of film with a waterproof function is formed on the surface of paper by printing water-based varnish.

The branch and leaf paper of printing the waterproof layer is cut to form a plurality of strip-shaped structures with the width of 140mm, the two sides of the length direction of each strip-shaped structure are cut by a wheel cutter to form a plurality of rectangular structures with the width of 2mm, the rectangular structures on the two sides of each strip-shaped structure are arranged at intervals (the interval distance is 20mm) to obtain the pine leaf paper 30, and the obtained pine leaf paper 30 is wound on a rod-shaped structure through an automatic leaf pulling machine to obtain branches and leaves 3.

The branches and leaves 3 can be obtained through the steps, and the preparation method is simple.

Preparation of the trunk 2: the trunk paper is printed with a waterproof layer, then the trunk paper printed with the waterproof layer is made into a tubular trunk 2, and the trunk 2 is the trunk of the Christmas tree.

The method specifically comprises the following steps: the sand paper is laid between two layers of the laid kraft paper, and then the two layers of the kraft paper and the sand paper are rolled into a tubular structure to form the tubular trunk 2.

In this embodiment, kraft paper with a grammage of 200g is selected for the inner layer structure 22 and the outer layer structure 21 of the trunk 2, and sand pipe paper with a grammage of 500g is adopted for the middle layer structure 23, and the thickness of the paper pipe is 3MM and the diameter of the paper pipe is 30 MM.

The method specifically comprises the following steps: the kraft paper as the raw material of the trunk 2 is printed by a printer to have a grey-brown CMYK value (C52/M60/Y70/K42) which is close to the color of the pine trunk. After color printing, the water-based varnish is coated on the surface, and the thickness of the varnish and other related parameters are similar to those of the pine needle 31. Then, the paper tube with the thickness of 3MM and the diameter of 30MM is manufactured through a paper tube manufacturing device, wherein the sand tube paper is wrapped in a kraft paper interlayer.

Preparation of the bottom basin 1: printing a waterproof layer on the paper board, then carrying out die cutting, and splicing and forming the paper board of the bottom basin 1 obtained by die cutting.

The bottom basin 1 mainly adopts a corrugated board with a B pit, wherein the grammage of the surface paper is 230g, the grammage of the core paper is 140g, and the prepared paper has good bursting resistance, pressure resistance and printing adaptability. And then carrying out water-based varnish printing on the surface paper and the lining paper of the B pit corrugated paper, wherein the gap between the pressure rollers of the printing machine is about 2.6 MM-2.8 MM, the pressure resistance of the corrugated paper is weakened due to overpressure, and the water-based varnish for printing is not good in water-based varnish effect due to slight pressure.

Assembling the prepared branches and leaves 3, the trunk 2 and the bottom basin 1 to obtain the Christmas tree.

The branches and the trunk 2 are formed by bundling through paper adhesive tapes and then inserted into a flowerpot to form a complete Christmas tree decorative pot. The connection auxiliary materials can be adopted for assembly in the assembly process, and the connection auxiliary materials are mainly paper adhesive tapes.

The printing manufacturing process of the Christmas tree comprises the steps of manufacturing the branches and leaves 3, the trunk 2 and the bottom basin 1, then assembling the obtained branches and leaves 3, the trunk 2 and the bottom basin 1 to obtain the Christmas tree, wherein the branches and leaves 3, the trunk 2 and the bottom basin 1 are all made of paper structures, waste gas and pungent smell are not generated in the production process, the Christmas tree is harmless to human bodies, the Christmas tree belongs to green manufacturing, the paper structures can be recycled and reproduced, raw materials belong to renewable resources, the Christmas tree can be naturally degraded, and the Christmas tree is free of environmental pollution; all print the waterproof layer in the manufacturing process of branch and leaf 3, trunk 2 and end basin 1, can be applicable to outdoor weather, can adapt to moist and rainy day.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in a descriptive sense or a positional relationship based on the orientation shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to 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 do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

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