Method for producing patterned container

Abstract

To provide a method for producing a patterned container.SOLUTION: A method for producing a patterned container including a container body 31 and a first pattern layer 32 comprises: a first pattern film product manufacturing step S920 including a first pattern film preforming sub-step S921 of performing thermoformation on a first pattern film 4 having a thermoplastic resin film and a first pattern 40 to obtain a first preformed pattern film product 41, and a first pattern film product cut sub-step S922 of cutting out a first molded portion 411 to obtain a first pattern film product 42; a pattern film product installation step S940 of installing the first pattern film product 42 in a mold 8 of an injection molding device; and a plastic injection molding step S950 of injecting a thermoplastic material into the mold 8 of the injection molding device to obtain a patterned container 3. The container body 31 is connected to a surface having the first pattern 40 and covers the first pattern 40.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method for manufacturing a container made of a thermoplastic material, and in particular to a patterned container made of a thermoplastic material. [Background technology]

[0002] When manufacturing plastic containers with patterns on their surfaces, the patterns are usually transferred onto the surface of the semi-finished container by a transfer technique, for example, a thermal transfer technique, as in Patent Document 1. Although this manufacturing method is simple, the pattern is directly exposed to the outside on the surface of the container, so that when food is placed in the container, the food comes into direct contact with the pattern, which may adversely affect food safety.

[0003] In addition, the pattern is easily damaged, and damage to the pattern affects the texture of the entire container. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Taiwan Patent No. I804423 Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE PRESENT EMBODIMENT It is an object of the present invention to provide a method for making patterned containers that overcomes at least one of the problems of the prior art. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides: A method for manufacturing a patterned container, comprising: The patterned container includes a container body and a first pattern layer connected to a surface of the container body; and The method includes a first patterned film product manufacturing step, a patterned film product installation step, and a plastic injection molding step; The first pattern film product manufacturing step includes a first pattern film preforming substep of thermoforming a first pattern film having a transparent thermoplastic film and a first pattern on one surface of the thermoplastic film using a vacuum forming device having a first mold corresponding to the container body to obtain a first preformed pattern film product having a first molded portion having the contour of the container body; a first pattern film cut sub-step of cutting a first molded portion of the first preformed pattern film product using a cutting device to obtain a first pattern film product having the first pattern; The step of placing the patterned film-processed product is a step of placing the first patterned film-processed product in a mold of an injection molding device for injection molding the container body, The present invention provides a method for manufacturing a patterned container, characterized in that the plastic injection molding step is a step of using the injection molding device to inject a thermoplastic material into the mold, and obtaining the patterned container, in which the container body formed by solidifying the thermoplastic material is connected to the surface of the first pattern film-processed product having the first pattern and covers the first pattern. Effect of the Invention

[0007] The manufacturing method for a patterned container of the present invention is designed to include a first patterned film product manufacturing step, a patterned film product installation step, and a plastic injection molding step, so that the pattern of the manufactured patterned container is protected by a transparent plastic film, so that the pattern will not discolor or oxidize due to direct contact with food ingredients or air, and will not be damaged by rubbing, and the color saturation of the pattern will last longer. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a flow chart showing a first embodiment of a method for manufacturing a patterned container of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view showing the structure of a patterned container manufactured according to the first embodiment. [Diagram 3]FIG. 2 is a process diagram showing the first patterned film product manufacturing step of the first embodiment. [Figure 4] FIG. 2 is a process diagram showing the first patterned film product manufacturing step of the first embodiment. [Diagram 5] FIG. 2 is a process diagram showing the second patterned film processed product manufacturing step of the first embodiment. [Figure 6] FIG. 2 is a process diagram showing the second patterned film processed product manufacturing step of the first embodiment. [Figure 7] FIG. 2 is a process diagram showing the steps of installing the patterned film product and injection molding the plastic product in the first embodiment. [Figure 8] FIG. 4 is a flow diagram illustrating a second embodiment of the present invention. [Figure 9] FIG. 11 is a cross-sectional view showing the structure of a patterned container manufactured according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] In order to more clearly describe the objectives, technical means and advantages of the embodiments of the present invention, the following will clearly and completely describe the technical means in the embodiments of the present invention in combination with the accompanying drawings of the embodiments of the present invention. It is clear that the described embodiments are only some embodiments of the present invention, and not all embodiments. Generally, the components of the embodiments of the present invention depicted and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present invention provided below in the accompanying drawings does not constitute any limitation on the protection scope of the present invention, but only represents selected embodiments of the present invention.

[0010] Before describing the present invention in more detail, it should be noted that, where considered appropriate, reference numerals or terminal portions of reference numerals have been repeated among the figures to indicate corresponding or analogous elements, which may optionally have similar characteristics.

[0011] In describing the present invention, terms indicating orientations and positional relationships, such as "upper," "lower," "inner," "outer," "left," "right," "front," and "rear," are based on the orientations and positional relationships shown in the drawings or the orientations and positional relationships customarily placed when using the product of the present invention, for the purpose of easier and clearer description, and are not intended to teach or suggest that the corresponding apparatus or device has a specific orientation, a structure or operation in a specific orientation, etc., and are not intended to be limitations on the present invention.

[0012] Moreover, in describing the present invention, the terms "first", "second", etc. are used for distinguishing purposes only and do not teach or imply any relative importance.

[0013] As shown in Figs. 1 and 2, the first embodiment of the method for manufacturing a patterned container 3 of the present invention is applied to manufacturing a patterned container 3 made of a plastic material and having a pattern by injection molding.

[0014] The patterned container 3 includes a container body 31 made of a plastic material formed by injection molding, a first pattern layer 32 attached to and connected to the inner surface of the container body 31, and a second pattern layer 33 attached to and connected to the outer surface of the container body 31.

[0015] The first pattern layer 32 has a first pattern portion 320 facing the inner surface of the container body 31 , and the second pattern layer 33 has a second pattern portion 330 facing the outer surface of the container body 31 .

[0016] The manufacturing method of the patterned container 3 of the present invention includes a pattern film manufacturing step S910, a first pattern film processed product manufacturing step S920, a second pattern film processed product manufacturing step S930, a pattern film processed product installation step S940, and a plastic injection molding step S950.

[0017] The pattern film manufacturing step S910 is a step in which a first pattern 40 (shown in FIG. 3) is printed on one surface of one transparent sheet-like thermoplastic film and a second pattern 50 (shown in FIG. 5) is printed on one surface of another transparent sheet-like thermoplastic film using a printing device (not shown) to produce a first pattern film 4 (shown in FIG. 3) and a second pattern film 5 (shown in FIG. 5).

[0018] The first pattern film 4 is processed to form a first pattern layer 32 of the patterned container 3, and the second pattern film 5 is processed to form a second pattern layer 33 of the patterned container 3.

[0019] The first pattern 40 of the first pattern film 4 and the second pattern 50 of the second pattern film 5 may be the same or different.

[0020] Examples of thermoplastic films include, but are not limited to, food-grade transparent PET (polyethylene terephthalate) or transparent OPP film (oriented polypropylene).

[0021] There are many types of printing devices for printing the first pattern 40 and the second pattern 50 on the thermoplastic plastic film, and since this is not an improvement of the present invention, a detailed description will be omitted.

[0022] As shown in FIG. 1, FIG. 3 and FIG. 4, the first pattern film product manufacturing step S920 includes a first pattern film preforming sub-step S921 and a first pattern film product cutting sub-step S922.

[0023] The first pattern film preforming substep S921 is a step of preforming the first pattern film 4 to form the first pattern layer 32 using a vacuum forming apparatus 6, and is a substep of thermoforming the first pattern film 4 having a transparent thermoplastic film and a first pattern 40 on one surface of the thermoplastic film using a vacuum forming apparatus 6 having a first mold 61 corresponding to the container body 31 to obtain a first preformed pattern film processed product 41 having a first molded portion 411 having the contour of the container body 31.

[0024] In this embodiment, the vacuum forming device 6 is provided with a first mold 61 having the same shape as the contour of the inner surface of the container body 31. When performing the preforming process, the first pattern film 4 is placed in the vacuum forming device 6 so that the surface on which the first pattern 40 is printed is opposite the side facing the first mold 61, so that the first pattern 40 is above the first mold 61 and faces the upper side of the first mold 61. Then, the first pattern film 4 is thermoformed by the first mold 61 of the vacuum forming device 6 to obtain a first preformed pattern film processed product 41 having a first molded portion 411 having the contour of the inner surface of the container body 31. The first molded portion 411 has the first pattern 40 on its convex surface.

[0025] Thermoforming plastic films using a vacuum forming device 6 is a well-known technique and there are many methods for doing so, so a detailed description will be omitted.

[0026] The first pattern film product cutting substep S922 is a substep in which a cutting device 7 is used to cut out the first molded portion 411 of the first preformed pattern film product 41 to obtain a first pattern film product 42 having a first pattern 40.

[0027] In this embodiment, the cutting device 7 has a first die seat 71 for placing the first preformed pattern film product 41 so as to be positioned, and a first stamping die 72 for cutting the first preformed pattern film product 41 installed on the first die seat 71. In this step, the first stamping die 72 stamps out the first preformed pattern film product 41 along the periphery of the first molding portion 411 to obtain a first pattern film product 42 having a first pattern 40 corresponding to the contour of the inner surface of the container body 31. In addition, the first pattern film product 42 has the first pattern 40 on the convex surface.

[0028] As shown in FIG. 1, FIG. 5 and FIG. 6, the second pattern film product manufacturing step S930 includes a second pattern film preforming sub-step S931 and a second pattern film product cutting sub-step S932.

[0029] The second pattern film preforming substep S931 is a step of preforming the second pattern film 5 to form the second pattern layer 33 using a vacuum forming device 6, in which a second pattern film 5 made of a thermoplastic material having a transparent thermoplastic film and a second pattern 50 on one surface of the thermoplastic film is placed in a vacuum forming device 6 having a second mold 62 formed to match the contour of the outer surface of the container body 31, with the surface of the second pattern film 5 having the second pattern 50 facing the second mold 62, and the second pattern film 5 is thermoformed in the second mold 62 using the vacuum forming device 6 to obtain a second preformed pattern film processed product 51 having a second molded portion 511 having the contour of the outer surface of the container body 31.

[0030] In this embodiment, the vacuum forming device 6 is provided with a second mold 62 having the same shape as the contour of the outer surface of the container body 31. When performing the preforming process, the second pattern film 5 is placed in the vacuum forming device 6 so that the surface on which the second pattern 50 is printed faces the first mold 61, so that the second pattern 50 faces the second mold 62 above the second mold 62. Then, the second pattern film 5 is thermoformed by the second mold 62 of the vacuum forming device 6 to obtain a second preformed pattern film processed product 51 having a second molded portion 511 having the contour of the outer surface of the container body 31. The second molded portion 511 has the second pattern 50 on its concave surface.

[0031] The second pattern film product cutting substep S932 is a substep in which the second molded portion 511 of the second preformed pattern film product 51 is cut out using a cutting device 7 to obtain a second pattern film product 52 having a second pattern 50.

[0032] In this embodiment, the cutting device 7 has a second die seat 73 for placing the second preformed pattern film product 51 so as to be positioned, and a second punching die 74 for cutting the second preformed pattern film product 51 installed on the second die seat 73. In this step, the second punching die 74 punches out the second preformed pattern film product 51 along the periphery of the second molding portion 511 to obtain a second pattern film product 52 having a second pattern 50 corresponding to the contour of the outer surface of the container body 31. The second pattern film product 52 has the second pattern 50 on its concave surface.

[0033] As shown in Figures 1 and 7, the pattern film processed product installation step S940 is a step of installing the first pattern film processed product 42 and the second pattern film processed product 52 in an injection molding device for injection molding the container body 31.

[0034] In this embodiment, the injection molding apparatus has a mold 8 for injection molding the container body 31. The mold 8 has a male mold 81 and a female mold 82 that can be clamped together. In this step, the first patterned film product 42 is placed so as to be positioned within the male mold 81, and the second patterned film product 52 is placed so as to be positioned within the female mold 82.

[0035] The plastic injection molding step S950 is a step in which a thermoplastic material is injected into a mold 8 using the injection molding apparatus, and the container body 31 formed by solidifying the thermoplastic material is connected to a surface having a first pattern 40 and a surface having a second pattern 50 so as to be between the opposing surfaces of the first pattern 40 of the first pattern film processed product 42 and the second pattern 50 of the second pattern film processed product 52, and covers the first pattern 40 and the second pattern 50.

[0036] In this embodiment, in the plastic injection molding step S950, a molding space 80 is defined between the first pattern film product 42 and the second pattern film product 52 by clamping the male mold 81 and the female mold 82 together. At that time, the surface having the first pattern 40 of the first pattern film product 42 and the surface having the second pattern 50 of the second pattern film product 52 face each other. Then, using the injection molding device, a thermoplastic material 800 is injected into the molding space 80 of the mold 8, so that the thermoplastic material 800 is connected to the surface having the first pattern 40 of the first pattern film product 42 and the surface having the second pattern 50 of the second pattern film product 52 and covers the first pattern 40 and the second pattern 50.

[0037] The thermoplastic material 800 in the mold 8 solidifies to form the container body 31, the first pattern film product 42 forms the first pattern layer 32 connected and fixed to the inner surface of the container body 31, and the second pattern film product 52 forms the second pattern layer 33 connected and fixed to the outer surface of the container body 31.

[0038] Finally, the male mold 81 and the female mold 82 of the mold 8 are opened, and the patterned container 3 can be taken out.

[0039] In this first embodiment, the first pattern film preforming sub-step S921 and the second pattern film preforming sub-step S931 are performed separately by exchanging the first mold 61 and the second mold 62 of the vacuum forming device 6, and the cutting device 7 performs the first pattern film processed product cutting sub-step S922 and the second pattern film processed product cutting sub-step S932 separately by exchanging the first mold seat 71 and the first punching die 72 and the second mold seat 73 and the second punching die 74.

[0040] However, in other embodiments, in order to improve manufacturing efficiency, a dedicated vacuum forming device 6 and a cutting device 7 can be used separately when performing the first patterned film processed product manufacturing step S920 and the second patterned film processed product manufacturing step S930.

[0041] As shown in Figures 3, 4, 8 and 9, the second embodiment of the method for manufacturing a patterned container of the present invention differs from the first embodiment in that it is a method for manufacturing a patterned container 3 in which a pattern is applied to a single surface. Only the differences will be described below.

[0042] In the second embodiment, the manufacturing method of the patterned container 3 only includes a pattern film manufacturing step S910, a first pattern film product manufacturing step S920, a pattern film product installation step S940, and a plastic injection molding step S950.

[0043] A pattern film manufacturing step S910 manufactures a first pattern film 4, a first pattern film product manufacturing step S920 manufactures the first pattern film 4 into a first pattern film product 42, and a pattern film product installation step S940 installs the first pattern film product 42 into a male mold 81 or a female mold 82 of a mold 8 (shown in FIG. 7). In a plastic injection molding step S950, the thermoplastic material 800 injected into the mold 8 is connected to the first pattern film product 42 to manufacture a patterned container 3 having a pattern on a single surface.

[0044] In practice, the type of the first mold 61 installed in the vacuum forming device 6 can be changed based on the installation position of the pattern on the patterned container 3 .

[0045] When forming a pattern on the inner surface of the container body 31, the first mold 61 can be designed to match the inner surface contour corresponding to the inner surface of the container body 31, and thermoforming is performed so that the surface having the first pattern 40 of the first pattern film 4 is on the opposite side facing the first mold 61, and then the manufactured first pattern film processed product 42 is placed in the male mold 81 of the mold 8 to perform the plastic injection molding step S950, thereby manufacturing a patterned container 3 having a pattern only on the inner surface.

[0046] Conversely, when forming a pattern on the outer surface of the container body 31, the first mold 61 can be designed to match the outer surface contour corresponding to the outer surface of the container body 31, and thermoforming is performed so that the surface having the first pattern 40 of the first pattern film 4 faces the first mold 61, and then the manufactured first pattern film processed product 42 is placed into the female mold 82 of the mold 8 to perform the plastic injection molding step S950, thereby manufacturing a patterned container 3 having a pattern only on the outer surface.

[0047] In the above embodiment, the robot arm or other transport device is used to place the first pattern film 4 and the second pattern film 5 into the vacuum forming device 6, take out the first preformed pattern film product 41 and the second preformed pattern film product 51 from the thermal processing device, place the first preformed pattern film product 41 and the second preformed pattern film product 51 into the cutting device 7, take out the first pattern film product 42 and the second pattern film product 52 from the cutting device 7, and place the first pattern film product 42 and the second pattern film product 52 into the male mold 81 and the female mold 82 of the mold 8, thereby achieving the automation or semi-automation of the production process. There are many types of robot arms and transport devices, and they are not the improvement of the present invention, so detailed description is omitted.

[0048] According to the above, by designing the first patterned film product manufacturing step S920, the patterned film product installation step S940 and the plastic injection molding step S950, the pattern of the manufactured patterned container 3 is protected by a transparent film, so that the pattern will not be damaged by friction with food ingredients, will not be damaged or fallen off by being rubbed with tools such as brushes during cleaning, and will not discolor or oxidize due to direct contact with food ingredients or air, so that the color saturation of the pattern will last longer, and the texture and durability of the patterned container 3 will be greatly improved.

[0049] Furthermore, by designing the second patterned film product manufacturing step S930, a patterned container 3 having patterns on both sides can be manufactured in the patterned film product installation step S940 and the plastic injection molding step S950.

[0050] Therefore, the method for manufacturing the patterned container 3 of the present invention is a novel invention that can reliably achieve the object of the present invention.

[0051] While the invention has been described in connection with what are considered to be exemplary embodiments, it is understood that the invention is not limited to the disclosed embodiments, but is intended to cover various arrangements within the broadest spirit and scope so as to encompass all such modifications and equivalent arrangements.

[0052] The above embodiment is illustratively intended to explain the principles and effects of the present invention, and is not intended to limit the present invention. Those skilled in the art may make some changes or modifications to the above embodiment without departing from the spirit and scope of the present invention. Therefore, all changes and modifications made by those skilled in the art without departing from the gist of the present invention should be considered to be within the scope of protection of the present invention. [Industrial Applicability]

[0053] The present invention is suitable for providing patterned containers. [Explanation of symbols]

[0054] 3 Patterned vessels 31 Container body 32 First pattern layer 320 First Pattern Section 33 Second pattern layer 330 Second Pattern Section 4. First patterned film 40 First Pattern 41 First preformed patterned film product 411 First molding section 42 First patterned film product 5. Second patterned membrane 50 Second Pattern 51 Second preformed patterned film product 511 Second molding section 52 Second patterned film product 6 Vacuum forming equipment 61 First Type 62 Second Type 7 Cutting device 71 First mold seat 72 First punching die 73 Second mold seat 74 Second punching die Type 8 80 Molding space 800 Thermoplastic materials 81 Male 82 Female S910 Patterned membrane manufacturing steps S920 First step in manufacturing patterned film products S921 First pattern film preforming sub-step S922 First patterned film cutting sub-step S930 Second step of manufacturing patterned film products S931 Second pattern film preforming sub-step S932 Second patterned film product cutting sub-step S940 Patterned membrane processing product installation steps S950 Plastic Injection Molding Step

Claims

1. A method for manufacturing a patterned container, comprising the steps of: The patterned container includes a container body and a first pattern layer connected to a surface of the container body; and The manufacturing method includes a first patterned film product manufacturing step, a patterned film product installation step, and a plastic injection molding step; The first pattern film product manufacturing step includes a first pattern film preforming substep of thermoforming a first pattern film having a transparent thermoplastic film and a first pattern on one surface of the thermoplastic film using a vacuum forming device having a first mold corresponding to the container body to obtain a first preformed pattern film product having a first molded portion having the contour of the container body; a first pattern film cut sub-step of cutting out a first molded portion of the first pre-molded pattern film product using a cutting device to obtain a first pattern film product having the first pattern; The step of placing the patterned film-processed product is a step of placing the first patterned film-processed product in a mold of an injection molding device for injection molding the container body, A method for manufacturing a patterned container, characterized in that the plastic injection molding step is a step of using the injection molding device to inject a thermoplastic material into the mold, and obtaining a patterned container in which the container body formed by solidifying the thermoplastic material is connected to the surface of the first pattern film-processed product having the first pattern and covers the first pattern.

2. In the first pattern film preforming sub-step, the first mold is formed to match the contour of the outer surface of the container body, and the first pattern film is placed in the vacuum forming device so that the surface having the first pattern faces the first mold, and then thermoforming is performed; The mold of the injection molding apparatus has a male mold and a female mold that can be clamped together, 2. The method for manufacturing a patterned container according to claim 1, characterized in that in the patterned film-processed product placement step, the first patterned film-processed product is placed so as to be positioned within the female mold.

3. In the first pattern film preforming sub-step, the first mold is formed to match the contour of the inner surface of the container body, and the first pattern film is placed in the vacuum forming device so that the surface having the first pattern is opposite to the side facing the first mold, and then thermoforming is performed; The mold of the injection molding apparatus has a male mold and a female mold that can be clamped together, 2. The method for manufacturing a patterned container according to claim 1, characterized in that in the patterned film-processed product placement step, the first patterned film-processed product is placed so as to be positioned within the male mold.

4. a second pattern film preforming substep of placing a second pattern film having a transparent thermoplastic film and a second pattern on one surface of the thermoplastic film in a vacuum forming device having a second mold formed to match the contour of the outer surface of the container body, with the surface of the second pattern film having the second pattern facing the second mold, and using the vacuum forming device to thermoform the second pattern film in the second mold to obtain a second preformed pattern film processed product having a second molded portion having the contour of the outer surface of the container body; A second patterned film product manufacturing step includes a second patterned film product cutting sub-step of cutting out a second molded portion of the second pre-molded patterned film product using the cutting device to obtain a second patterned film product having the second pattern, In the pattern film-processed product placement step, the second pattern film-processed product is placed so as to be positioned within the female mold; The method for manufacturing a patterned container as described in claim 3, characterized in that in the plastic injection molding step, a thermoplastic material is injected into the mold using the injection molding device, and the container body formed by solidifying the thermoplastic material is obtained, which is connected to the surface having the first pattern and the surface having the second pattern so as to be between the opposing surfaces of the first pattern of the first pattern film product and the second pattern of the second pattern film product, and covers the first pattern and the second pattern.

5. The method for manufacturing a patterned container described in any one of claims 1 to 3, further comprising a pattern film manufacturing step of printing the first pattern on one surface of a thermoplastic plastic film using a printing device to obtain the first pattern film.

6. The method for manufacturing a patterned container as described in claim 4, further comprising a pattern film manufacturing step of using a printing device to print the first pattern on one surface of one transparent thermoplastic film and print the second pattern on one surface of another transparent thermoplastic film to obtain the first pattern film 4 and the second pattern film 5.

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