Resin container, and manufacturing method and manufacturing apparatus thereof

Abstract

Disclosed is a method for manufacturing a resin container. According to one aspect of the present invention, provided is a method for manufacturing a resin container by fusing a pair of resin container members to each other, the method comprising the steps of: arranging the pair of resin container members apart from each other; filling a molten resin material in a filling space formed between a facing pair of fusable ends of the pair of resin container members; and curing the resin material.

Description

Resin container and its manufacturing method and manufacturing device

[0001] The present invention relates to a resin container and a method and apparatus for manufacturing the same.

[0002] Conventionally, methods for manufacturing resin containers, such as liners for hydrogen storage tanks, have been used, such as injection molding at once, or directly heating each end of a pair of resin container members constituting the resin container with a hot plate or the like while vertically aligning them, and then applying pressure from both sides to fuse the ends of the pair of resin container members. However, the first method described above has problems such as difficulty in manufacturing medium- to large-sized resin containers due to the characteristic of using a mold for the entire shape, and the second method described above has problems in that it is difficult to manufacture large resin containers because it is performed with a pair of resin container members aligned vertically, and quality defects such as non-melting or insufficient melting at the fused portion, carbonization due to overheating, unbalanced fusion, and bubble formation due to moisture absorption may occur due to difficulties in controlling the heating temperature, and some of the fused portion is pushed outward by the pressurization, forming a hardened bead, requiring a post-processing process to cut and remove it.

[0003] [Prior Art Literature]

[0004] [Patent Document]

[0005] Republic of Korea Patent Publication No. 10-2022-0069657 (published on May 27, 2022)

[0006] The present invention is intended to solve the above-mentioned problems, and provides a method and device for manufacturing a resin container capable of manufacturing resin containers of various sizes from small to large, manufacturing resin containers with high fusion strength and fusion quality, and increasing the productivity of manufacturing resin containers.

[0007] According to one aspect of the present invention, a method for manufacturing a resin container by fusing a pair of resin container members is provided, the method including the steps of: arranging the pair of resin container members to be spaced apart from each other; filling a molten resin material into a filling space formed between a pair of opposing fused ends of the pair of resin container members; and curing the resin material.

[0008] Before the step of arranging the pair of resin container members so as to be spaced apart from each other, the step of aligning the pair of resin container members horizontally may be further included.

[0009] Before the step of filling the resin material, a step of preheating the fusion end may be further included.

[0010] Before the step of filling the resin material, a step of preparing a molten resin material by melting the resin or a material including the resin may be further included.

[0011] In the step of preheating the fusion end, the fusion end can be heated while rotating the resin container member.

[0012] Before the step of curing the resin material, a step of vacuum forming the resin material filled in the filling space may be further included.

[0013] The step of vacuum forming a resin material includes the step of placing a mold on the outside of the resin material, and the step of forming a vacuum state between the mold and the resin material, and the resin material can be formed by the mold by being sucked out as the vacuum state is formed between the mold and the resin material.

[0014] In the step of curing the resin material, the outer surface of the resin material can be flattened as the resin material shrinks while curing after vacuum forming.

[0015] According to one aspect of the present invention, a device for manufacturing a resin container by fusing a pair of resin container members is provided, the device including a support unit for supporting the pair of resin container members while being spaced apart from each other, and a filling unit for filling a molten resin material into a filling space formed between a pair of mutually opposed fused ends of the pair of resin container members.

[0016] According to one aspect of the present invention, a resin container is provided, comprising a pair of resin container members, and a joint portion interposed between the pair of resin container members to joint the pair of resin container members, wherein the joint portion is formed by filling a molten resin material into a filling space formed between a pair of mutually opposing fused ends of the pair of resin container members spaced apart from each other and curing the filling space.

[0017] According to the present invention, it is possible to manufacture resin containers of various sizes from small to large, manufacture resin containers with high fusion strength and fusion quality, and increase the productivity of manufacturing resin containers.

[0018] Figure 1 is a flowchart showing a method for manufacturing a resin container according to one embodiment of the present invention.

[0019] Figures 2 to 11 are drawings showing a resin container manufacturing device according to one embodiment of the present invention.

[0020] FIGS. 12 to 21 are drawings showing various embodiments of a fusion end of a resin container member according to one embodiment of the present invention.

[0021] [Explanation of symbols]

[0022] 100: Resin container manufacturing device 120: Support unit 122: Friction pad 124: Inner ring

[0023] 125: Wedge groove 126: Outer ring 127: Bearing 128: Chain 129: First cylinder

[0024] 140: Filling unit 160: Preheating unit 162: Hot air generator 164: Infrared heating element

[0025] 166: Through hole 170: Heater 180: Rotating unit 190: Vacuum forming unit 192: Mold

[0026] 194: Packing section 196: Vacuum forming section 198: Second cylinder 199: O-ring 200: Resin container

[0027] 210: Resin material 220: Resin container member 240: Joint 260: Fusion end

[0028] 261: First projection 262: Second projection 263: First slope 264: Third projection

[0029] 265: Second slope 266: Recess 267: Third slope 268: Fourth projection

[0030] 269: Extension part 270: Cover part 271: Protrusion part 280: Filling space

[0031] The present invention is susceptible to various modifications and embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention. In describing the present invention, detailed descriptions of related known technologies will be omitted if they are deemed to obscure the gist of the present invention.

[0032] Terms such as first, second, etc. may be used to describe various components, but these components should not be limited by these terms. These terms are used solely to distinguish one component from another.

[0033] The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprise" or "have" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0034] Hereinafter, a resin container (200) and a manufacturing method and a manufacturing device (100) according to the present invention will be described in detail with reference to the attached drawings. In the description with reference to the attached drawings, identical or corresponding components are assigned the same drawing numbers, and redundant descriptions thereof are omitted.

[0035]

[0036] First, a method for manufacturing a resin container according to one embodiment of the present invention will be described.

[0037] According to the present embodiment, in a method for manufacturing a resin container (200) by fusing a pair of resin container members (220) as illustrated in FIG. 1 and the like, a method for manufacturing a resin container is provided, including a step (S130) of arranging a pair of resin container members (220) to be spaced apart from each other, a step (S150) of filling a molten resin material (210) into a filling space (280) formed between a pair of mutually opposing fused ends (260) of a pair of resin container members (220), and a step (S170) of curing the resin material (210).

[0038] According to this embodiment, it is possible to manufacture resin containers (200) of various sizes from small to large, manufacture resin containers (200) with high fusion strength and fusion quality, and increase the productivity of manufacturing resin containers (200).

[0039] Hereinafter, each step of the method for manufacturing a resin container according to the present embodiment will be described with reference to FIG. 1, etc.

[0040]

[0041] This embodiment relates to a method for manufacturing a resin container (200) by mutually fusing a pair of resin container members (220).

[0042] The resin container (200) may be specifically a liner of a hydrogen storage tank, but is not limited thereto, and any container formed of a resin or a material including a resin may be included in the resin container (200).

[0043] The resin container member (220) constitutes the resin container (200) and can be formed by molding a resin or a material including resin using various molding methods including injection molding.

[0044] A pair of resin container members (220) may be formed in shapes corresponding to each other, but the fusion end portions (260) where fusion occurs as ends of the resin container members (220) may be formed to correspond to each other, but the shapes of the other portions may be formed differently from each other.

[0045] In step 130, a pair of resin container members (220) can be placed spaced apart from each other.

[0046] As a pair of resin container members (220) are arranged spaced apart from each other, a pair of fusion ends (260) face each other, and at this time, a filling space (280) for filling a molten resin material (210) for fusion of a pair of resin container members (220) can be formed between the pair of fusion ends (260).

[0047] In order to manufacture the resin container (200) to its designed length, a pair of resin containers (200) can be spaced apart from each other by taking into consideration the designed length of the resin container (200) and the actual length of each resin container member (220).

[0048] For example, if the actual length of one of the pair of resin container members (220) is shorter than its design length, the pair of resin container members (220) may be spaced apart from each other by making the distance between the pair of resin container members (220) longer than the design distance in order to manufacture the resin container (200) to its design length.

[0049] Before the step (S130) of arranging a pair of resin container members (220) to be spaced apart from each other, a step (S120) of aligning a pair of resin container members (220) horizontally may be further included.

[0050] By fusing a pair of resin container members (220) by aligning them horizontally, a large resin container (200) can be easily manufactured compared to fusing a pair of resin container members (220) by aligning them vertically.

[0051] In step 150, a molten resin material (210) can be filled into a filling space (280) formed between a pair of opposing fusion ends (260) of a pair of resin container members (220).

[0052] Before the step (S150) of filling the resin material (210), a step (S110) of melting the resin or a material including the resin to prepare the resin material (210) in a molten state may be further included.

[0053] In the step (S110) of preparing the resin material (210), the temperature of the resin material (210) can be controlled to prevent over-melting, under-melting, or insufficient melting of the resin material (210).

[0054] In addition, in the step (S110) of preparing the resin solvent (210), the temperature of the resin solvent (210) can be controlled according to the residence or waiting time of the resin solvent (210) in order to prevent changes in the physical properties according to the residence or waiting time of the resin solvent (210).

[0055] In the step (S110) of preparing the resin solvent (210), before filling the resin solvent (210), a set amount of the resin solvent (210) located on the side of the discharge port through which the resin solvent (210) is discharged and having a possibility of changing physical properties can be removed or discarded.

[0056] In the step (S150) of filling the resin material (210), in order to manufacture the resin container (200) to its designed length, the discharge amount of the resin material (210) can be controlled according to the distance between a pair of resin container members (220) spaced apart in consideration of the designed length of the resin container (200) and the actual length of each resin container member (220).

[0057] For example, if the actual length of one of the pair of resin container members (220) is shorter than its design length, the distance between the pair of resin container members (220) can be made longer than the design distance to manufacture the resin container (200) to its design length, and the pair of resin container members (220) can be spaced apart and arranged, and thereafter, the discharge amount of the resin material (210) can be controlled according to the distance between the pair of resin container members (220).

[0058] In the step (S150) of filling the resin material (210), the resin material (210) can be filled into the filling space (280) while rotating a pair of resin container members (220).

[0059] Accordingly, the resin material (210) can be uniformly and effectively filled into the filling space (280).

[0060]

[0061] *Before the step (S150) of filling the resin material (210), a step (S140) of preheating the fusion end (260) may be further included.

[0062] By preheating the fusion end (260) before filling the molten resin material (210) into the filling space (280) formed between a pair of fusion ends (260), the fusion strength between the resin material (210) and the fusion end (260) can be increased.

[0063] In the step (S140) of preheating the fusion end (260), the outer surface of the fusion end (260) can be heated until it becomes molten.

[0064] In the step (S140) of preheating the fusion end (260), the fusion end (260) can be heated in an indirect heating manner to prevent carbonization from occurring in the fusion end (260).

[0065] Specifically, the indirect heating method may be to blow hot air toward the fusion end (260), irradiate infrared heat, or blow hot air toward the fusion end (260) and irradiate infrared heat at the same time.

[0066] In the step (S140) of preheating the fusion end (260), the fusion end (260) can be heated while rotating the resin container member (220).

[0067] By rotating the resin container member (220) while heating the fusion end (260) to preheat the fusion end (260), it is possible to prevent the fusion end (260) from being partially heated, or overheating, underheating, or insufficient heating occurring in a part of the fusion end (260), or carbonization occurring in the fusion end (260).

[0068] Specifically, in the step (S140) of preheating the fusion end (260), a pair of resin container members (220) can be heated together while rotating a pair of resin container members (220) while being spaced apart from each other.

[0069] In step 170, the resin material (210) can be hardened.

[0070] The molten resin material (210) can be hardened by shrinking as it cools.

[0071] Before the step (S170) of hardening the resin material (210), a step (S160) of vacuum forming the resin material (210) filled in the filling space (280) may be further included.

[0072] By vacuum forming the resin material (210) before it hardens, the outer surface of the resin material (210), which hardens while shrinking upon cooling, can be finished flat without a separate subsequent process.

[0073] The step (S160) of vacuum forming the resin material (210) may include a step (S161) of placing a mold (192) on the outside of the resin material (210), and a step (S162) of forming a vacuum state between the mold (192) and the resin material (210).

[0074] Accordingly, the resin material (210) can be sucked out and molded by the mold (192) as a vacuum state is formed between the resin material and the mold (192).

[0075] That is, as a vacuum state is formed between the mold (192) placed on the outside of the resin material (210) and the resin material (210), the resin material (210) is sucked into the space between the mold (192) and the vacuum force generated by the pressure difference so that the resin material (210) can be formed by the mold (192).

[0076] The molding surface of the mold (192) may be flat or have a concave shape toward the resin material (210), and the dimensions including the curvature of the molding surface may be set according to the temperature-dependent shrinkage rate of the resin or material including the resin forming the resin material (210).

[0077] In the step (S160) of vacuum forming the resin material (210), the temperature of the mold (192) can be controlled to prevent rapid cooling of the resin material (210) formed by the mold (192).

[0078] In the step of forming a vacuum state (S162), a vacuum can be formed between the mold (192) and the resin material (210) by sucking air in the space between the mold (192) and the resin material (210).

[0079] In the step of forming a vacuum state (S162), the vacuum force generated by the pressure difference between the mold (192) and the resin material (210) allows the resin material (210) to flow and fill the filling space (280) while eliminating the gap generated between the fusion end (260).

[0080] The step (S160) of vacuum forming the resin material (210) may further include, after the step (S162) of forming a vacuum state, a step (S163) of pressurizing a pair of resin container members (220) from both sides to prevent the occurrence of a gap in the filling space (280).

[0081] After forming a vacuum state between the mold (192) and the resin material (210), by pressurizing a pair of resin container members (220) from both sides, the resin material (210) can be made to flow, thereby removing the gap between the resin material (210) and the fusion end (260) that may remain in the filling space (280).

[0082] In the step (S170) of curing the resin material (210), the outer surface of the resin material (210) can be flattened as the resin material (210) shrinks while being cured after vacuum forming.

[0083] The vacuum-formed resin material (210) can be hardened while its outer surface becomes flat due to cooling shrinkage, and accordingly, a separate subsequent finishing process for flattening the outer surface of the resin material (210) is not required.

[0084]

[0085] Next, a resin container manufacturing device (100) according to one embodiment of the present invention will be described.

[0086] According to the present embodiment, in a device for manufacturing a resin container (200) by fusing a pair of resin container members (220) as shown in FIGS. 2 and 3, etc., a resin container manufacturing device (100) is provided, which includes a pair of support units (120) for supporting a pair of resin container members (220) while being spaced apart from each other, and a filling unit (140) for filling a molten resin material (210) into a filling space (280) formed between a pair of mutually opposing fusion ends (260) of the pair of resin container members (220).

[0087] According to this embodiment, it is possible to manufacture resin containers (200) of various sizes from small to large, manufacture resin containers (200) with high fusion strength and fusion quality, and increase the productivity of manufacturing resin containers (200).

[0088] Hereinafter, each component of the resin container manufacturing device (100) according to the present embodiment will be described with reference to FIGS. 2 to 11, etc., but with respect to the method of manufacturing a resin container (200) using the resin container manufacturing device (100) according to the present embodiment, the contents of the resin container manufacturing method described above may be followed.

[0089]

[0090] FIGS. 2 to 11 are drawings showing a resin container manufacturing device (100) according to the present embodiment, wherein FIGS. 2 and 3 are perspective views showing the resin container manufacturing device (100), FIGS. 4 and 5 are perspective views showing the support unit (120) and the vacuum forming unit (190) of the resin container manufacturing device (100), FIGS. 6, 7, and 10 are cross-sectional views taken along line A-A' of FIG. 2, FIGS. 8 and 9 are drawings showing the friction pad (122) of the support unit (120) of the resin container manufacturing device (100), and FIG. 11 is a cross-sectional view taken along line B-B' of FIG. 2, which is a drawing showing the filling unit (140) and the preheating unit (160) of the resin container manufacturing device (100).

[0091]

[0092] This embodiment relates to a device for manufacturing a resin container (200) by mutually fusing a pair of resin container members (220).

[0093] A pair of support units (120) can support a pair of resin container members (220) while being spaced apart from each other.

[0094] A pair of support units (120) are provided to be movable forward and backward, and can be moved forward and backward while supporting a pair of resin container members (220) so that the pair of resin container members (220) can be placed apart from each other.

[0095] In order to manufacture a resin container (200) with its designed length using a pair of support units (120), the pair of resin containers (200) can be spaced apart from each other by taking into consideration the designed length of the resin container (200) and the actual length of each resin container member (220).

[0096] A pair of support units (120) can support and horizontally align a pair of resin container members (220).

[0097] The support unit (120) may include a friction pad (122) that frictionally supports the outer surface of the resin container member (220), an inner ring (124) on which the friction pad (122) is disposed on the inside, an outer ring (126) disposed on the outside of the inner ring (124), and a bearing (127) that is disposed between the outer ring (126) and the inner ring (124) and rotates so that the inner ring (124) can rotate.

[0098] A plurality of bearings (127) are provided, and the plurality of bearings (127) can be aligned by being connected to each other by a chain (128).

[0099] The support unit (120) may further include a first cylinder (129) that is provided to be movable forward and backward and moves forward to press the friction pad (122) toward the resin container member (220).

[0100] A wedge groove (125) having a tapered inner surface that becomes narrower as it goes forward is formed on the inside of the front portion of the first cylinder (129), and a friction pad (122) is formed corresponding to the wedge groove (125) so that when pressed to one side within the wedge groove (125) by the resin container member (220), the resin container member (220) is pressed, thereby increasing the frictional support force for the resin container member (220).

[0101] The filling unit (140) can fill a molten resin material (210) into a filling space (280) formed between a pair of opposing fusion ends (260) of a pair of resin container members (220).

[0102] The filling unit (140) can prepare a resin material (210) by melting a resin or a material including a resin.

[0103] The filling unit (140) can fill the filling space (280) by discharging or extruding the resin material (210) through the discharge port.

[0104] The filling unit (140) can control the temperature of the resin material (210) to prevent over-melting, under-melting, or insufficient melting of the resin material (210).

[0105] Additionally, the filling unit (140) can manage the temperature of the resin material (210) according to the residence or waiting time of the resin material (210) to prevent changes in the physical properties according to the residence or waiting time of the resin material (210).

[0106] The filling unit (140) can remove or discard a set amount of resin material (210) with a possibility of changing physical properties located on the side of the discharge port through which the resin material (210) is discharged before filling the resin material (210).

[0107] The filling unit (140) can control the discharge amount of the resin material (210) according to the distance between a pair of resin container members (220) spaced apart in consideration of the design length of the resin container (200) and the actual length of each resin container member (220) to manufacture the resin container (200) to its design length.

[0108] The filling unit (140) may have a heater (170) installed on the outside to maintain the internal temperature.

[0109] A preheating unit (160) may be further included to preheat the fusion end (260) by being positioned outside the fusion end (260) before filling the resin material (210) into the filling space (280).

[0110] The preheating unit (160) can be formed to extend to correspond to the shape of the outer surface of the resin container member (220).

[0111] Accordingly, the heating range is increased by the preheating unit (160), enabling the fusion end (260) to be preheated more effectively.

[0112] The preheating unit (160) can heat the fusion end (260) in an indirect heating manner to prevent carbonization from occurring at the fusion end (260).

[0113] Specifically, the preheating unit (160) can blow hot air toward the fusion end (260), irradiate infrared heat, or blow hot air toward the fusion end (260) and irradiate infrared heat at the same time.

[0114] The preheating unit (160) is formed in a shape having an internal space and has at least one through hole (166) formed on a surface facing the fusion end (260), and a hot air generator (162) that generates hot air and an infrared heating element (164) that generates infrared heat can be arranged inside.

[0115] Accordingly, the preheating unit (160) can blow hot air generated from the hot air generator (162) to the fusion end (260) through the through hole (166) and simultaneously irradiate infrared heat generated from the infrared heating element (164).

[0116] Specifically, the preheating unit (160) is formed in a tubular shape, and a plurality of through holes (166) are provided and can be arranged spaced apart from each other along the length direction.

[0117] While the preheating unit (160) heats the fusion end (260), a rotation unit (180) that rotates the support unit (120) and the inner ring (124) of the support unit (120) to rotate the resin container member (220) may be further included.

[0118] Additionally, the rotation unit (180) can rotate a pair of resin container members (220) by rotating the inner ring (124) of the support unit (120) while the filling unit (140) fills the filling space (280) with resin material (210).

[0119] As the rotating unit (180) rotates the inner ring (124) of the supporting unit (120), the resin container member (220) supported by the supporting unit (120) can also rotate.

[0120] A pair of vacuum forming units (190) may be further included to be arranged outside of the filling space (280) and vacuum form the resin material (210) before the resin material (210) filled in the filling space (280) is cured.

[0121] The filling unit (140) may be provided to be able to move up and down, and the vacuum forming unit (190) may be provided to be able to move forward and backward.

[0122] Accordingly, when the filling unit (140) moves downward to fill the filling space (280) with the resin material (210) and then moves upward, a pair of vacuum forming units (190) move toward the resin material (210) filled in the filling space (280) to vacuum form the resin material (210).

[0123] The preheating unit (160) is formed to be extended to correspond to the shape of the outer surface of the resin container member (220), and is provided to be movable forward and backward and up and down, so that after moving downward, it moves forward toward the fusion end (260) to preheat the fusion end (260), and then moves backward from the fusion end (260) and then moves upward to enable vacuum forming by a pair of vacuum forming units (190).

[0124] Meanwhile, the preheating unit (160) can be arranged to be able to move up and down together with the filling unit (140), so that preheating of the fusion end (260) by the preheating unit (160) and filling of the resin material (210) by the filling unit (140) can be performed continuously without separately moving the resin container member (220).

[0125] The preheating unit (160) may have a heater (170) installed on the outside to maintain the internal temperature.

[0126] A pair of vacuum forming units (190) can be placed between a pair of support units (120).

[0127] The vacuum forming unit (190) may include a mold (192) disposed on the outside of the resin material (210) for forming the resin material (210), and a packing part (194) disposed on one side of the mold (192) to seal between the mold (192) and the resin material (210) by coming into contact with the resin container member (220).

[0128] At least one of the pair of vacuum forming units (190) may further include a vacuum forming section (196) that forms a vacuum state between the mold (192) and the resin material (210) through suction.

[0129] The vacuum forming unit (190) may further include a second cylinder (198) that moves the mold (192) and packing portion (194) back and forth.

[0130] Each mold (192) is moved toward each other by the second cylinder (198) and meets to function as one mold (192), and at this time, each packing part (194) is in contact with the resin container member (220), but moves together with the mold (192) and is pressed toward the resin material (210) member with a structural wedge action to seal the space between the mold (192) and the resin material (210), and thereafter, the vacuum forming part (196) forms a vacuum state between the mold (192) and the resin material (210) by sucking air in the space sealed by the packing part (194) between the mold (192) and the resin material (210), and accordingly, the resin material (210) can be sucked out and formed by the mold (192).

[0131] At least one of the pair of vacuum forming units (190) may further include an O-ring (199) placed on the mold (192), so that when the respective molds (192) of the pair of vacuum forming units (190) meet each other, the O-ring (199) is interposed so that the space between the respective molds (192) can be sealed.

[0132] The molding surface formed when the molds (192) meet each other may be flat or have a concave shape toward the resin material (210), and the dimensions including the curvature of the molding surface may be set according to the temperature-dependent shrinkage rate of the resin or material including the resin forming the resin material (210).

[0133] The vacuum forming unit (190) can control the temperature of the mold (192) so as to prevent rapid cooling of the resin material (210) formed by the mold (192).

[0134] The packing section (194) can improve the vacuum force by moving toward the resin material (210) as suction by the vacuum forming section (196) progresses, thereby sealing the space between the mold (192) and the resin material (210).

[0135] The packing section (194) is formed to have a tapered inner surface that becomes narrower as it goes outward, so that vacuum tightness can be improved when moving toward the resin material (210) as suction by the vacuum forming section (196) progresses.

[0136] The packing section (194) may include an insulating member capable of insulating the space between the mold (192) and the resin material (210) to prevent rapid cooling of the resin material (210) molded by the mold (192).

[0137] After a vacuum state is formed between the mold (192) and the resin material (210), a pressurizing unit may be further included to pressurize a pair of resin container members (220) from both sides to prevent the occurrence of a gap in the filling space (280).

[0138]

[0139] A resin container (200) according to one embodiment of the present invention will be described.

[0140] According to the present embodiment, as illustrated in FIGS. 12 to 21, etc., a resin container (200) is provided, which includes a pair of resin container members (220), and a coupling portion (240) interposed between the pair of resin container members (220) to couple the pair of resin container members (220) to each other, wherein the coupling portion (240) is formed by filling a filling space (280) formed between a pair of mutually opposing fusion ends (260) of a pair of resin container members (220) spaced apart from each other, and curing the filling space with a molten resin material (210).

[0141] According to this embodiment, resin containers (200) of various sizes from small to large can be provided, resin containers (200) with high fusion strength and fusion quality can be provided, and resin containers (200) with high manufacturing productivity can be provided.

[0142] Hereinafter, each component of the resin container (200) according to the present embodiment will be described with reference to FIGS. 12 to 21, etc., but with respect to the method and device for manufacturing the resin container (200) according to the present embodiment, the contents of the resin container manufacturing method and resin container manufacturing device (100) described above may be followed.

[0143]

[0144] The connecting portion (240) can be interposed between a pair of resin container members (220) to mutually connect the pair of resin container members (220), as shown in FIG. 12(a) and the like.

[0145] The joint (240) can be formed by filling a molten resin material (210) into a filling space (280) formed between a pair of opposing fusion ends (260) of a pair of resin container members (220) spaced apart from each other and hardening the filling space.

[0146] As shown in Fig. 12(b), a first protrusion (261) protruding from the outer surface of the filling space (280) side of the resin container member (220) and extending along the outer surface of the resin container member (220) may be provided at the fusion end (260).

[0147] The rigidity of the fusion end (260) can be increased through the first protrusion (261), the fusion area of ​​the fusion end (260) can be expanded to increase the fusion force, and shrinkage deformation that occurs as the resin material (210) hardens can be compensated for.

[0148] As shown in Fig. 12(a), the first protrusion (261) can be formed so that the protrusion length increases as it moves toward the filling space (280).

[0149] Accordingly, the rigidity of the fusion end (260) can be further increased.

[0150] As illustrated in FIG. 18(b), at least one of the pair of fusion ends (260) may be provided with a second protrusion (262) that protrudes from the end surface of the resin container member (220) toward the filling space (280) and extends in the circumferential direction of the resin container member (220) along the end surface of the resin container member (220).

[0151] The fusion force can be increased by expanding the fusion area of ​​the fusion end (260) through the second protrusion (262), and the resin material (210) can be filled well in the filling space (280) without flowing into the inside of the resin container member (220).

[0152] As shown in Fig. 18, the second protrusion (262) can be positioned so as to be biased toward the inside of the resin container member (220).

[0153] Accordingly, the fusion area of ​​the fusion end (260) can be expanded to increase the fusion strength, and the resin material (210) can be filled well in the filling space (280) without flowing into the inside of the resin container member (220).

[0154] As illustrated in FIG. 21, the second protrusion (262) provided on one of the pair of fusion ends (260) may be arranged to be biased toward the inside of the resin container member (220), and the second protrusion (262) provided on the other of the pair of fusion ends (260) may be arranged to be biased toward the outside of the resin container member (220).

[0155] Accordingly, the effect of ensuring that the resin material (210) does not flow into the inside of the resin container member (220) and is well filled in the filling space (280) can be enhanced.

[0156] As illustrated in FIG. 13, the second protrusion (262) may be formed to have a first inclined surface (263) that slopes toward the filling space (280) from the outside of the resin container member (220) toward the inside of the resin container (200).

[0157] Accordingly, the fusion area of ​​the fusion end (260) can be expanded to increase the fusion strength, and the resin material (210) can be filled well in the filling space (280) without flowing into the inside of the resin container member (220).

[0158] As illustrated in FIG. 14, the second protrusion (262) may be provided with a third protrusion (264) that protrudes from the first inclined surface (263) toward the filling space (280) and extends in the circumferential direction of the resin container member (220) along the first inclined surface (263), but is arranged to be biased toward the inside of the resin container member (220).

[0159] The fusion strength can be improved by expanding the fusion area of ​​the fusion end (260) through the third protrusion (264).

[0160] As illustrated in FIG. 16, the second protrusion (262) may be formed to further have a second inclined surface (265) that slopes toward the filling space (280) from the inside of the resin container member (220) to the outside of the resin container (200).

[0161] Accordingly, the fusion area of ​​the fusion end (260) can be expanded to improve the fusion strength, and the effect of ensuring that the resin material (210) is well filled in the filling space (280) without flowing into the inside of the resin container member (220) can be further enhanced.

[0162] As illustrated in FIG. 13, the second protrusion (262) provided on one of the pair of fusion ends (260) may be formed to have a first inclined surface (263) that slopes toward the filling space (280) while going from the outside of the resin container member (220) to the inside of the resin container (200), and the second protrusion (262) provided on the other of the pair of fusion ends (260) may be formed to have the first inclined surface (263) and further have a second inclined surface (265) that slopes toward the filling space (280) while going from the inside of the resin container member (220) to the outside of the resin container (200).

[0163] Accordingly, the fusion area of ​​the fusion end (260) can be expanded to improve the fusion strength, and the effect of ensuring that the resin material (210) is well filled in the filling space (280) without flowing into the inside of the resin container member (220) can be further enhanced.

[0164] As illustrated in FIG. 20, a second protrusion (262) provided on one of the pair of fusion ends (260) may be formed to have a first inclined surface (263) that is inclined toward the filling space (280) while going from the outside of the resin container member (220) to the inside of the resin container (200), and an indentation (266) that is recessed into the end surface of the resin container member (220) and extends in the circumferential direction of the resin container member (220) along the end surface of the resin container member (220) and has a third inclined surface (267) that is inclined toward the filling space (280) while going from the inside of the resin container member (220) to the outside of the resin container (200) may be provided on the other of the pair of fusion ends (260).

[0165] Accordingly, the fusion area of ​​the fusion end (260) can be expanded to improve the fusion strength, and the effect of ensuring that the resin material (210) is well filled in the filling space (280) without flowing into the inside of the resin container member (220) can be further enhanced.

[0166] As illustrated in FIG. 21, one of the pair of fusion ends (260) may be provided with a fourth protrusion (268) that extends along the inner surface of the resin container member (220) so as to be able to protrude from the inner surface of the resin container member (220) and cover the lower portion of the filling space (280).

[0167] By expanding the fusion area of ​​the fusion end (260) through the fourth protrusion (268), the fusion strength can be increased, and the resin material (210) can be filled well in the filling space (280) without flowing into the inside of the resin container member (220), and the filling amount of the resin material (210) can be increased.

[0168] The fourth protrusion (268) may include an extension (269) that protrudes from the inner surface of the resin container member (220) and extends toward the inside of the resin container member (220) so as to expand the filling space (280), and a cover (270) that is bent from the first extension and extends to cover the lower part of the filling space (280).

[0169] The cover part (270) may have an end positioned on the lower side of the inner surface of the other of the pair of fusion ends (260) as the pair of resin container members (220) are spaced apart from each other.

[0170] Accordingly, the fusion area of ​​the fusion end (260) can be expanded to improve the fusion strength.

[0171] The fourth protrusion (268) may further include a protrusion (271) that protrudes toward the outside of the resin container member (220) from the end of the second extension, but is spaced apart from the inner surface of the other one of the pair of fused ends (260) as the pair of resin container members (220) are spaced apart.

[0172] The fusion strength can be improved by increasing the fusion area of ​​the fusion end (260) through the protrusion (271), and the effect of ensuring that the resin material (210) does not flow into the inside of the resin container member (220) and is well filled in the filling space (280) can be further enhanced.

[0173] The protrusion (271) may be formed to have an inclined surface that slopes toward the inside of the other one of the pair of fusion ends (260) while going toward the inside of the other one of the pair of fusion ends (260) in the filling space (280).

[0174] By further increasing the fusion area of ​​the fusion end (260) through the inclined surface of the protrusion (271), the fusion strength can be further improved, and the effect of ensuring that the resin material (210) does not flow into the inside of the resin container member (220) and is well filled in the filling space (280) can be further enhanced.

[0175] The present invention is said to include all embodiments that can be formed according to the above-described contents and combinations thereof, and some of the embodiments can be confirmed through FIGS. 12 to 21.

[0176] Above, one embodiment of the present invention has been described, but a person having ordinary skill in the art will be able to modify and change the present invention in various ways by adding, changing, deleting or adding components, etc., within the scope that does not depart from the spirit of the present invention described in the claims, and this will also be considered to be included within the scope of the rights of the present invention.

Claims

1. A method for manufacturing a resin container by mutually fusing a pair of resin container members, A step of arranging a pair of the above resin container members spaced apart from each other; A step of filling a molten resin material into a filling space formed between a pair of opposing fused ends of a pair of the above resin container members; and A method for manufacturing a resin container, comprising a step of curing the above resin material.

2. In paragraph 1, Before the step of arranging the pair of resin container members apart from each other, A method for manufacturing a resin container further comprising the step of horizontally aligning a pair of said resin container members.

3. In paragraph 1, Before the step of filling the above resin material, A method for manufacturing a resin container further comprising a step of preparing a resin material in a molten state by melting a resin or a material including a resin.

4. In paragraph 1, Before the step of filling the above resin material, A method for manufacturing a resin container further comprising a step of preheating the above-mentioned fusion end.

5. In paragraph 4, In the step of preheating the above fusion end, A method for manufacturing a resin container, wherein the fusion end is heated while rotating the resin container member.

6. In paragraph 1, Before the step of curing the above resin material, A method for manufacturing a resin container further comprising a step of vacuum forming the resin material filled in the filling space.

7. In paragraph 6, The step of vacuum forming the above resin material is: A step of placing a mold on the outside of the above resin material; and A step of forming a vacuum state between the mold and the resin material is included. The above resin material is, A method for manufacturing a resin container, wherein a vacuum is formed between the mold and the resin container, thereby being sucked out and molded by the mold.

8. In paragraph 7, In the step of hardening the above resin material, A method for manufacturing a resin container, wherein the outer surface of the resin material is flattened as the resin material shrinks while being cured after vacuum forming.

9. In a device for manufacturing a resin container by mutually fusing a pair of resin container members, A pair of support units that support a pair of the above resin container members while being spaced apart from each other; and A resin container manufacturing device including a filling unit that fills a molten resin material into a filling space formed between a pair of opposing fused ends of a pair of the above resin container members.

10. A pair of resin container members; and A coupling member interposed between a pair of the above resin container members and mutually coupling the pair of the above resin container members is included, The above joint is, A resin container formed by filling a molten resin material into the filling space formed between a pair of opposing fused ends of a pair of resin container members spaced apart from each other and curing the filling space.

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