Resin composite member

Abstract

To provide a resin composite member capable of easily and surely sealing a resin molded body without a gap.SOLUTION: The ship-shaped portion 2324 includes a pair of side surface side walls, a side 23b, and one end surface side 24b and another end surface side 23b provided between the pair of side surface side walls on the one side. The one end surface side 23c and the other end surface side 24c have a recessed shape inclined so as to be recessed toward the intermediate portion in a side view of the ship-shaped portion 2324. The ship-shaped portion 2324 includes: 23c 24c, the covering material 21 is composed of one sheet material, and is continuously joined to one end surface 23c, the 24c and each side surface 23b, and a region adjacent to the end surface 23c, the 24c in the 24b, and is brought into close contact with one end surface 23c, the 24c and each side surface 23b, the without clearance. 24b.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a resin composite member. [Background technology]

[0002] It has been known that in a container having a three-dimensional resin member as a stopper welded to a gas barrier material, the contents deteriorate due to air that permeates the resin member. For this reason, containers in which the stopper portion is covered with a gas barrier material have been proposed. For example, Patent Documents 1 and 2 listed below propose packaging bags in which the gas barrier packaging material of a packaging bag is extended to cover the three-dimensionally formed stopper portion.

[0003] Furthermore, Patent Document 3 below proposes a spout that is molded with a gas barrier intermediate layer. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-218274 [Patent Document 2] Japanese Patent Application Publication No. 2020-147308 [Patent Document 3] Japanese Patent Application Laid-Open No. 2012-162272 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the packaging bags described in Patent Documents 1 and 2, a large space is formed between the stopper and the covering packaging material. The stopper has a boat-like shape, and although the sides are in close contact with the container wall all around, the three-dimensional shape of the stopper prevents the end of the boat-like shape from being in close contact with the container wall. As a result, a large space is formed around the stopper, and air in the space can pass through the stopper, causing deterioration of the contents.

[0006] Furthermore, with a spout such as that described in Patent Document 3, when resin molding the spout or cap, it is necessary to use a gas barrier material for the intermediate layer by co-injection molding, which poses the problem of time-consuming molding of the spout. In addition, because the intermediate layer with gas barrier properties does not reach the end of the spout or cap, it is not possible to completely prevent air from entering the container.

[0007] Therefore, an object of the present invention is to provide a resin composite member that can easily and reliably seal a resin molded body without any gaps. [Means for solving the problem]

[0008] The resin composite member of the present invention, which solves the above-mentioned problems, is a resin composite member comprising a resin molded body having a boat-shaped portion and a covering material made of a gas barrier packaging material using a flexible thermoplastic resin and covering one side of the boat-shaped portion, wherein the boat-shaped portion has a pair of side surfaces that bulge in the middle and narrow at both ends, and one end surface provided between the pair of side surfaces on the one side, and the one end surface has a concave shape that slopes downward toward the middle portion in a side view, and the covering material is made of a single sheet material and is continuously joined to the one end surface and the areas adjacent to the end surface on each of the side surfaces, and is in close contact with the one end surface and each of the side surfaces without any gaps.

[0009] In the resin composite member of the present invention, the boat-shaped portion of the resin molding has a pair of side surfaces that bulge in the middle and narrow at both ends, and one end surface between the side surfaces has a concave end surface that slopes downward toward the middle in a side view. Therefore, even when a covering material made of a single sheet material is bonded to the end surfaces in close contact with each other and is continuously bonded to the areas of each side surface adjacent to the end surfaces in close contact with each other, the covering material does not wrinkle or lift.

[0010] This allows the end face of the boat-shaped portion and the adjacent areas on both sides to be continuously sealed with the covering material, easily and reliably. Furthermore, since the resin molding can be simply covered with the covering material after molding, the resin molding can be easily molded. Therefore, it is possible to provide a resin composite member that can easily and reliably seal the resin molding without gaps.

[0011] In the present invention, it is preferable that the one end face is formed in the shape of a pair of approximately isosceles triangles connected at their bases, and the covering material includes a square shape with one side having a length equal to or greater than the base and the other side perpendicular to the one side having a length equal to or greater than the sum of the heights of the pair of approximately isosceles triangles.

[0012] In this way, the covering material can be used to reliably seal one end face of the boat-shaped portion and the adjacent areas on both sides continuously without any gaps, making it possible to easily produce a resin composite member.

[0013] In the present invention, the resin molded body is a member attached to a container, and the outer surface of the coating material arranged on one end face is arranged so as to face the inside of the container, and the outer surfaces of the coating material arranged on the pair of side faces may be airtightly joined to the container wall.

[0014] In addition, in the present invention, the resin molded body may be a member attached to a container, and the outer surface of the coating material arranged on one end face may be arranged so as to face the outside of the container, and the outer surfaces of the coating material arranged on the pair of side faces may be airtightly joined to the container wall.

[0015] In this way, the covering material is reliably and continuously sealed around the end face and adjacent areas on both sides of the boat-shaped portion, without any gaps, making it possible to reliably seal one side of the boat-shaped portion airtight. Therefore, even when attached to a portion that separates the inside and outside of a container, such as a spout, the covering material can airtightly separate the inside and outside of the container. For example, because the covering material can reliably seal even if a through hole is provided in the resin molded body, it is easy to provide a through hole in the resin molded body. [Effects of the Invention]

[0016] According to the present invention, it is possible to provide a resin composite member that can easily and reliably seal a resin molded body without any gaps. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a front view of a spouted container according to a first embodiment of the present invention. [Figure 2] 1A and 1B show a spout of a spouted container according to a first embodiment of the present invention, where (a) is a perspective view and (b) is a vertical cross-sectional view. [Figure 3] 3A and 3B show the spout body of the spout of FIG. 2, where FIG. 3A is a perspective view and FIG. 3B is a longitudinal sectional view. [Figure 4] 3A and 3B show the closure of the spout of FIG. 2, in which FIG. 3A is a perspective view and FIG. 3B is a longitudinal sectional view. [Figure 5] 1(a) to 1(c) are diagrams illustrating a covering material that covers a blocking portion of a spout according to a first embodiment of the present invention, and FIG. 1(d) is a diagram showing the covering material. [Figure 6] 5(a) to 5(c) are diagrams illustrating a method for covering the closure part of the spout with a covering material according to the first embodiment of the present invention. [Figure 7] 1(a) to 1(c) are diagrams illustrating a method for manufacturing a spouted container according to a first embodiment of the present invention. [Figure 8] 1 is a diagram showing a state in which a spouted container according to a first embodiment of the present invention is in use. [Figure 9] FIG. 10 is a side view of a spout body and a closing portion of a spout according to a second embodiment of the present invention. [Figure 10] FIG. 10 is a diagram showing a state in which a spouted container according to a second embodiment of the present invention is in use. DETAILED DESCRIPTION OF THE INVENTION

[0018] [First embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, a spout will be used as an example of a resin composite member. Fig. 1 is a side view of a spout-equipped container in which the spout of this embodiment is used.

[0019] The spout-equipped container 10 comprises a storage section 12 formed by a container wall 11 made of a flexible packaging material with gas barrier properties, a spout 20 as a resin composite member joined and attached to the container wall 11, and a covering material 21 made of a flexible packaging material with gas barrier properties and covering at least a portion of the spout 20.

[0020] The storage section 12 is constructed by sealing a pair of container walls 11 at their outer periphery with a peripheral seal 13. The packaging material constituting the container walls 11 of the storage section 12 is made of a flexible resin sheet having gas barrier properties, and may be a laminated sheet provided with a gas barrier layer such as an aluminum layer. The storage section 12 contains various liquids, viscous liquids, gel-like substances, powders, and other contents that change due to oxidation or due to moisture absorption or drying.

[0021] As shown in Figures 2(a)(b) to 4(a)(b), the spout 20 comprises a spout body 22 joined to the container wall 11, and a closure portion 23 which is a boat-shaped portion removably attached to the spout body 22 so as to close the spout body 22.

[0022] Spout body 22 and closing portion 23 are made of resin molded bodies and each have a boat-like shape. Although the two may be molded integrally, in this embodiment spout body 22 and closing portion 23 are molded separately and then combined integrally.

[0023] As shown in Figures 3(a) and (b), the spout body 22 is integrally molded from a base portion 24 that has a boat-shaped shape in plan view and has the container wall 11 tightly joined to its side periphery, a large-diameter protruding portion 25 that protrudes upward from the base portion 24 and has a male thread 25a that can be threaded into the closure portion 23, and a connecting portion 26 that protrudes upward from the protruding portion 25, has a smaller diameter than the protruding portion 25, and has a locking structure 26a that can be used to connect other components when the spout-equipped container is in use.

[0024] 1, the sides of the base portion 24 are covered with the container wall 11, and are continuously welded and joined to the inner surface of the container wall 11 all around. The welded surface may have an uneven portion 27 or the like.

[0025] The connecting portion 26 is provided with a locking structure for locking the tube during use. This locking structure may be compliant with ISO80369-3, which allows connection to ISO standard tube connectors, etc.

[0026] A hollow portion 28 is provided inside base portion 24 and protruding portion 25, and a through-hole 29 is provided inside connecting portion 26, with the interior of spout body 22 penetrating vertically via hollow portion 28 and through-hole 29. The lower end of through-hole 29 opens into storage portion 12, and the upper end is closed by closing portion 23.

[0027] Closure portion 23, which serves as a boat-shaped portion, is a resin molded body disposed at the end of spout 20, as shown in Figures 4(a) and 4(b). Closure portion 23 has a pair of side surfaces 23b that bulge in the middle and narrow at both ends, and an upper end surface 23c that is provided between the pair of side surfaces 23b at the top. Around the side, concave-convex portions 27, such as grooves, similar to those of spout body 22, are provided.

[0028] The upper end surface 23c of the closing portion 23 has a concave shape that is inclined so as to be recessed toward the middle portion in a side view. The concave shape is formed so that the height of the closing portion 23 in the vertical direction gradually decreases toward the middle portion. In this embodiment, the concave shape is composed of a pair of flat surfaces that are inclined toward the middle portion, and is formed into a shape in which a pair of approximately isosceles triangles are connected at their bases in a plan view. Here, the approximately isosceles triangle may be any shape that includes an isosceles triangle and a shape that can be considered an isosceles triangle in terms of manufacturing the spout 20.

[0029] The inside of the blocking portion 23 is provided with a threaded portion 33 having a female thread 33a that can be threaded with the male thread 25a of the protruding portion 25 of the spout body 22, a storage portion 34 that can store and lock the locking structure 26a of the connecting portion 26 by inserting and screwing the connecting portion 26 of the spout body 22, and a closing portion 35 that liquid-tightly blocks the through hole 29 of the spout body 22.

[0030] The closing portion 35 is provided with an insertion portion 36 that is inserted into the through-hole 29, and the insertion portion 36 is provided with a through-hole 37 that opens at the upper end surface 23c and extends vertically through the closing portion 23 in a direction along both side surfaces 23b. An opening 37a at the upper end of this through-hole 37 is sealed by a covering material 21, which will be described later.

[0031] Spout body 22 and closing portion 23 are combined and integrated by threading threaded portion 33 of closing portion 23 into protruding portion 25 of spout body 22. They can be integrated by rotating them in one direction relative to spout body 22, and can be separated by rotating them in the other direction.

[0032] In the integrated state, base portion 24 and closing portion 23 of spout body 22 are arranged so as to overlap in a plan view in the same orientation. Spout body 22 and closing portion 23 are pressed against each other, thereby maintaining that orientation.

[0033] In this state, the side periphery of closure portion 23 on the spout body 22 side and the side periphery of spout body 22 on the closure portion 23 side are preferably molded to the same shape so that their external shapes are arranged adjacent to each other without any step, and in this embodiment, the entire external shape of closure portion 23 has the same boat-shaped shape in plan view as base portion 24 of spout body 22. Therefore, when closure portion 23 is attached to spout body 22 and arranged adjacent to it, the entire spout 20 has a columnar external shape with a constant boat-shaped shape that is substantially continuous along its entire length.

[0034] The covering material 21 is made of a packaging material using a flexible resin and has gas barrier properties, and is welded to the surface of the closing portion 23 to tightly and securely cover the upper end surface 23c side of the closing portion 23. In this embodiment, the covering material 21 is continuously joined to the upper end surface 23c and to the regions of each side surface 23b adjacent to the upper end surface 23c, and is tightly and securely attached to the upper end surface 23c and each side surface 23b.

[0035] In the covering material 21 of this embodiment, the outer surface of the covering material 21 arranged on the upper end surface 23c is arranged so as to face the outside of the spouted container 10. The outer surfaces of the covering material 21 arranged on the pair of side surfaces 23b are airtightly joined to the container wall 11.

[0036] The packaging material constituting the covering material 21 is made of a single sheet material using a flexible resin with gas barrier properties, and may be a resin laminate sheet provided with a gas barrier layer such as an aluminum layer. The laminate sheet provided with the gas barrier layer has some stretchability to the extent that the gas barrier layer is not ruptured. The innermost layer is provided with a sealant layer made of a resin that can be welded to the closure portion 23, and the outermost layer is provided with a sealant layer made of a resin that can be welded to the innermost layer of the container wall 11 that constitutes the storage portion 12.

[0037] The covering material 21 includes a rectangular shape with one side having a length equal to or greater than the base of an approximately isosceles triangle and the other side perpendicular to the one side having a length equal to or greater than the sum of the heights of the pair of approximately isosceles triangles. In this embodiment, the covering material 21 is formed into a rectangular shape of such size.

[0038] That is, as shown in Fig. 5(a), the blocking portion 23 as the boat-shaped portion to be covered in this embodiment is formed in a diamond-shaped column shape in a plan view, and has a concave shape that slopes downward toward the middle when viewed from the side. The shape of one side of the central axis L of the blocking portion 23 in the longitudinal direction is a roughly isosceles triangle at the top as shown in Fig. 5(b), and a trapezoid at both side portions as shown in Fig. 5(c).

[0039] Let W be the width from the center of blocking portion 23 in a plan view, T be the thickness of blocking portion 23, i.e., the length of the base of the approximately isosceles triangle, H be the height at both ends of blocking portion 23, h be the height of blocking portion 23 in the concave shape, and Is be the width from the center along the surface of the concave shape, i.e., the height of the approximately isosceles triangle. In this embodiment, in order for a single rectangular covering material 21 to continuously join top end surface 23c and the areas of both side surfaces 23b adjacent to top end surface 23c, it is preferable that one side of the rectangular shape be equal to or greater than the length of the base T and the other side perpendicular to this side be equal to or greater than the sum of the heights of the pair of approximately isosceles triangles, 2Is. By arranging rectangular covering material 21 along the thickness direction of blocking portion 23, the top end surface of blocking portion 23 can be covered.

[0040] In this case, if the length of one side of the covering material 21 is the length T of the base of the approximately isosceles triangle and the length of the other side is the sum 2Is of the heights of the pair of approximately isosceles triangles, the upper edges of both side surfaces 23b can be covered with the covering material 21.

[0041] Furthermore, when the covering material 21 is used to cover the entire top end surface 23c and both side surfaces 23b of the blocking portion 23, the rectangular covering material 21 will be as follows. First, the area of ​​the top surface of one half of the blocking portion 23 relative to the axis L is 1 / 2 × T × W, and the area of ​​one side surface is W / 2 × (H + h). Therefore, the area of ​​the covering material 21 covering one half of the blocking portion 23 relative to the axis L is 2 × H × W. As shown in FIG. 5(d), the covering material 21 has a rectangular shape with a pair of side edges having a length of 2W, one of the other pair of side edges having a length of T + 2h, and the other having a length of 2H. If the covering material 21 is longer than this, the entire top end surface 23c and both side surfaces 23b of the blocking portion 23 can be covered.

[0042] 5, the pair of isosceles triangles are bent at the position of axis L in the middle of upper end surface 23c, and each vertex of the diamond of upper end surface 23c, as well as the portion between upper end surface 23c and each side surface 23b, and the middle portion of each side surface 23c are all shown as bent shapes, but the shapes of each of these portions may also be curved with an R. Furthermore, the pair of equal sides of the pair of isosceles triangles do not need to be straight, and may also be curved with an R.

[0043] The size and angle of the R shape in these shapes can be set arbitrarily as long as they are within a range in which the layer having gas barrier properties is not damaged due to stretching of the covering material 21 when the covering material 21 is welded so as to adhere tightly without any gaps.

[0044] In this way, the approximately isosceles triangle in this embodiment can be covered by the covering material 21 in the same way as an isosceles triangle due to the elongation of the covering material 21 when the covering material 21 is welded so that it adheres tightly without any gaps, and includes a shape that can be considered an isosceles triangle in terms of manufacturing the spout 20.

[0045] In addition, in this embodiment, the blocking portion 23, which is a boat-shaped portion, is positioned adjacent to the upper part of the spout body 22, so that the lower edge of the blocking portion 23 is formed in a straight shape when viewed from the side, but the shape of the lower edge is arbitrary, and it is also possible to form the shape of the covering material 21 that covers the entire both side surfaces 23b into various shapes corresponding to the lower edge.

[0046] In this embodiment, such a spout 20 can be manufactured by combining a pre-formed spout body 22 and a closing portion 23 into one body, and then tightly covering the closing portion 23 with a covering material.

[0047] As shown in FIG. 6(a), a rectangular covering material 21 is positioned in the recessed shape formed on the upper part of the blocking portion 23, and is heated and pressed with an upper heat-sealing mold 41 having a shape corresponding to the recessed shape on the upper part of the blocking portion 23 to weld the covering material 21 tightly and bonded to the entire upper part of the blocking portion 23.

[0048] 6(b), both end portions of covering material 21 welded to the upper surface of closing portion 23 are bent to face both sides of the side periphery of closing portion 23, and the end portions are aligned and positioned. Covering material 21 is sandwiched between closing portion 23 and a pair of side periphery heat-sealing molds 42 having a shape corresponding to the side periphery of closing portion 23, and heated and pressed to weld, thereby tightly bonding covering material 21 to the entire side periphery of closing portion 23.

[0049] As a result, as shown in Figure 6(c), one sheet of covering material 21 can be welded tightly and tightly without any gaps around the top and sides of the blocking portion 23, without causing wrinkles or lifting, and the spout 20 can be manufactured.

[0050] To manufacture a spout-equipped container 10 using the spout 20 manufactured in this manner, as shown in Figure 7(a), the spout 20 with the closure portion 23 covered with the covering material 21 is inserted between the container wall sheet materials 43, and the entire spout 20 is positioned at the end between the container wall sheet materials 43.

[0051] Next, as shown in FIG. 7( b ), with the entire spout 20 interposed between the container wall sheet materials 43 , the edge on one end is heat-sealed over a width equal to or greater than the spout 20 .

[0052] This causes a pair of container wall sheet materials 43 to be welded to the welding surfaces around the entire side periphery on both sides of base portion 24 of spout body 22. A pair of container wall sheet materials 43 is also welded to closure portion 23 so as to be continuous with spout body 22. Since covering material 21 tightly covers closure portion 23, covering material 21 on both surfaces of closure portion 23 is welded to the pair of container wall sheet materials 43.

[0053] The container wall sheet materials 43 are also heat-sealed by facing each other at the same width in the area where the spout 20 is not located. As a result, the entire edge where the spout 20 is located is welded and closed over a wide area, continuing from the left and right peripheral seals 13 of the pair of container wall sheet materials 43, thereby forming the spout-side peripheral seal 13 over the entire width.

[0054] Thereafter, as shown by the dashed lines in Figure 7(b), the spout-side peripheral seal 13 is cut away from both the left and right sides of the spout 20 to form the shape of the container. Then, as shown in Figure 7(c), notches 14 are formed on both side edges of the container wall 11 covering the spout 20 at positions corresponding to the boundary 38 between the base portion 24 and the closure portion 23 of the spout body 22, and a slit thinner than the thickness of the packaging material is formed along the boundary 38 by laser processing, forming an easy-to-break line 15. This makes it possible to manufacture an empty spout-equipped container 10 with an open bottom. To use the spout-equipped container 10, the contents can be placed in the storage portion 12 by placing an item in the storage portion 12 and heat-sealing the bottom to close it.

[0055] When using the container, as shown in Figure 8, the blocking portion 23 can be separated and removed from the spout body 22 and the contents can be discharged directly from the through hole 29 of the spout body 22, or as shown by the imaginary line, the connector of the tube 44 for discharging the contents can be connected to the connecting portion 26 and the contents can be discharged from the tube 44.

[0056] In spout 20 as a resin composite member as described above, closing portion 23 as a boat-shaped portion is provided with a pair of side surfaces 23b that bulge in the middle and narrow at both ends, and upper end surface 23c provided between side surfaces 23b has a concave shape that slopes downward toward the middle in a side view. Therefore, even when covering material 21 made of a single sheet material is bonded in close contact with upper end surface 23c and is bonded continuously to regions of each side surface 23b adjacent to upper end surface 23c in close contact, covering material 21 does not wrinkle or lift.

[0057] This allows the upper end surface 23c of the closing portion 23 and the adjacent areas of both side surfaces 23b to be continuously and easily and reliably sealed with the covering material 21. Moreover, since the resin molded body can be covered with the covering material after molding, the resin molded body can be easily molded.

[0058] Therefore, it is possible to provide a resin composite member that can easily and reliably seal a resin molding without any gaps, and by using it in the spout 20 of a container that requires barrier properties, as in this embodiment, a higher level of gas barrier properties can be achieved for the entire container, and particularly preferably, complete gas barrier properties can be achieved.

[0059] By continuously sealing the upper end surface 23c of the closure portion 23 and the adjacent areas of both side surfaces 23b with the covering material 21, the covering material 21 arranged on the surface of the closure portion 23 does not wrinkle or lift, improving the appearance quality of the spout 20 in the covered state. Furthermore, it is possible to prevent the contents from adhering to or remaining in the wrinkles or lift of the covering material 21.

[0060] Furthermore, the airtightness is not reduced by minute gaps caused by wrinkles, lifting, etc., and a reliable sealed structure can be achieved by the gas barrier covering material 21. Furthermore, there is no risk of the airtightness being deteriorated by damage caused by wrinkles, lifting, etc.

[0061] In this embodiment, the upper end surface 23c on one side is formed in the shape of a pair of isosceles triangles connected at the base, and the covering material 21 has a rectangular shape, one side of which is longer than the base, and the other side perpendicular to the one side has a length greater than the sum of the heights of the pair of isosceles triangles.

[0062] Therefore, the rectangular covering material 21, which is easy to manufacture and handle, can reliably and continuously seal the upper end surface 23c of the blocking portion 23 and the adjacent areas of both side surfaces 23b without any gaps, making it easy to manufacture the spout 20.

[0063] In this embodiment, closing portion 23 has through-holes 37 that open at upper end surface 23c and penetrate closing portion 23 in directions along both side surfaces 23b, and openings 37a of through-holes 37 at upper end surface 23c are sealed by covering material 21. Closing portion 23 is a member that is attached to the container, and covering material 21 is disposed so that the outer surface of covering material 21 disposed at upper end surface 23c faces the outside of the container, and the outer surface of covering material 21 is airtightly joined to container wall 11.

[0064] Therefore, covering material 21 is reliably and continuously sealed without any gaps to upper end surface 23c of closing portion 23 and adjacent areas of both side surfaces 23b, so that covering material 21 can airtightly separate the inside and outside of the container and can reliably airtightly seal opening 37a of through-hole 37. Even when attached to a portion that separates the inside and outside of the container, covering material 21 can provide airtight closure, and a container that is airtightly closed on the outside side of the container can be obtained, and through-hole 37 can be easily provided in closing portion 23 for manufacturing reasons, etc.

[0065] [Second embodiment] FIG. 9 shows a spout according to a second embodiment, and FIG. 10 shows a spouted container using the spout.

[0066] Similar to the first embodiment, the spout 20 of the second embodiment comprises a spout body 22 joined to the container wall 11, and a closure portion 23 disposed adjacent to and removably in close contact with the spout body 22 so as to close the spout body 22. The spout body 22 and the closure portion 23 are made of a resin molded body, and each has a boat-shaped shape in a plan view.

[0067] The second embodiment differs from the first embodiment in that the base portion 24 of the spout body 22 is covered with the covering material 21, and the closing portion 23 is not covered with the covering material 21.

[0068] As in the first embodiment, the spout body 22 is integrally molded from a base portion 24 which has a boat-shaped shape in a plan view and whose side periphery is positioned and joined between a pair of container walls 11, a large-diameter protruding portion 25 which protrudes upward from the base portion 24 and has a male thread 25a which can be threaded into the closure portion 23, and a connecting portion 26 which protrudes upward from the protruding portion 25 and is formed with a smaller diameter than the protruding portion 25 and has a locking structure 26a which can be used to connect other components such as a tube when using the spout-equipped container.

[0069] The base portion 24 in the second embodiment has a pair of side surfaces 24b that bulge in the middle and narrow at both ends, and a bottom surface 24c that is provided between the pair of side surfaces 24b at the bottom. In this embodiment, the bottom surface 24c side of the base portion 24 is sealed with the covering material 21.

[0070] The lower end surface 24c of the base portion 24 has a concave shape that slopes upward toward the middle portion in a side view. The concave shape is formed so that the vertical height of the base portion 24 of the spout body 22 gradually decreases toward the middle portion.

[0071] This concave shape is the same as in the first embodiment, and is made up of a pair of flat surfaces that are inclined toward the middle portion, and is formed in the shape of a pair of isosceles triangles that are connected at the base in a plan view.

[0072] The covering material 21 is made of a rectangular packaging material made of flexible resin and has gas barrier properties, and is formed in the same manner as in the first embodiment. This covering material 21 is welded to the surface of the base portion 24, thereby tightly and closely covering the bottom end surface 24c of the base portion 24. In this embodiment, the covering material 21 is continuously joined to the bottom end surface 24c and to the areas of each side surface 24b adjacent to the bottom end surface 24c, and is tightly and closely attached to the bottom end surface 24c and each side surface 24b.

[0073] In this embodiment, the outer surface of the covering material 21 arranged on the lower end surface 24c is arranged so as to face the inside of the container portion 12 of the spouted container 10.

[0074] The outer surfaces of the covering material 21 arranged on the pair of side surfaces 24b are arranged between the pair of vessel walls 11 together with the base portion 24 and welded together to form an airtight bond.

[0075] As in the first embodiment, the blocking portion 23 is formed so as to be able to be screwed onto the protruding portion 25 of the spout body 22, and is configured so as to be able to liquid-tightly block the through hole 29 of the spout body 22 by being screwed together.

[0076] The outer periphery of the blocking portion 23 is formed in a boat-shaped form that is approximately the same as the outer periphery of the spout body 22, and by screwing them together to form a single unit, the outer shapes of the two are arranged adjacent to each other without any steps, and the entire spout 20 has a columnar outer shape in which the boat-shaped form is essentially continuous along its entire length.

[0077] In spouted container 10 equipped with such a spout 20, closing portion 23 can be separated and removed from spout body 22 for use, as shown in Fig. 10. In this case, covering material 21, which is welded to lower end surface 24c of base portion 24 so as to close through-hole 29 on the inside of storage portion 12, can be opened by inserting a puncturing member or the like (not shown) into through-hole 29 and puncturing it. This makes it possible to discharge directly from through-hole 29 of spout body 22, or to connect discharge tube 44 to connecting portion 26 for use in discharge.

[0078] Such a spout 20 can also provide the same effects as those of the first embodiment. Moreover, in this embodiment, the outer surface of the covering material 21 arranged on the lower end surface 24c is arranged so as to face the inside of the container, and the outer surfaces of the covering material 21 arranged on the pair of side surfaces 24b are airtightly joined to the container wall 11.

[0079] Therefore, by attaching spout 20 to the portion that separates the inside and outside of the container, spouted container 10 can be obtained in which through-hole 29 in base portion 24, which is the boat-shaped portion, is airtightly closed on the inside. This allows the container to be opened and used by using a puncturing member to puncture covering material 21 that closes through-hole 29 on the inside of the container.

[0080] The above-described embodiments can be modified as appropriate within the scope of the present invention. For example, although the above describes an example of a spout 20 having a spout body 22 and a closing portion 23 as a resin composite member, other members may be used, and the present invention can be similarly applied to any member in which a resin molded body having a boat-shaped portion is covered with a flexible covering material that has gas barrier properties.

[0081] Furthermore, the resin composite member does not need to be a member made up of multiple parts, such as the above-mentioned spout body 22 and closing portion 23, but may be a member made up of a single part. For example, the resin composite member may be a spout in which spout body 22 without closing portion 23 in FIG. 9 is covered with covering material 21, or may be a member in which a resin molded body consisting only of closing portion 23 is covered with covering material 21.

[0082] Furthermore, in the above embodiments, an example of a rectangular sheet material having a predetermined size has been described as the covering material 21, but the shape of the covering material 21 is not particularly limited. That is, the shape of the covering material 21 can be selected arbitrarily as long as it is a sheet material having a size that includes at least a portion of a rectangle, one side of which has a length equal to or greater than the bases of a pair of isosceles triangles, and the other side perpendicular to the one side has a length equal to or greater than the sum of the heights of the pair of isosceles triangles. [Explanation of symbols]

[0083] 10 Spouted container 11 Container wall 12 Storage section 13 Perimeter seal 14 notches 15 Easy Breaking Line 20 spout 21 Covering material 22 Spout body 23 Occlusion 23b Side 23c Top surface 24 Foundation 24b side wall 24c Lower end surface 25 Protrusion 26 Connecting part 27 Uneven part 28 Hollow part 29 Through holes 33 Threaded joint 34 Storage area 35 Closure 36 Insertion section 37 Through hole 37a aperture 38 Boundary 41 Upper heat seal mold 42 Side perimeter heat sealing mold 43 Container wall sheet material 44 tubes

Claims

1. A resin composite member including: a resin molded body having a boat-shaped portion; and a covering material made of a gas barrier packaging material using a flexible thermoplastic resin and covering one side of the boat-shaped portion, the boat-shaped portion has a pair of side surfaces that are bulged at a middle portion and narrowed at both ends, and one end surface that is provided between the pair of side surfaces on the one side, the one end surface has a concave shape that is inclined so as to be concave toward the intermediate portion in a side view, The resin composite member is characterized in that the covering material is made of a single sheet material, is continuously bonded to the one end face and the area adjacent to the one end face on each of the side faces, and is in close contact with the one end face and each of the side faces without any gaps.

2. The one end face is formed in a shape of a pair of approximately isosceles triangles connected at their bases, The resin composite member according to claim 1, characterized in that the covering material includes a rectangular shape having one side longer than the base and another side perpendicular to the one side longer than the sum of the heights of the pair of approximately isosceles triangles.

3. The resin composite member described in claim 2, characterized in that the resin molded body is a component to be attached to a container, the outer surface of the coating material arranged on one end face is arranged so as to face the inside of the container, and the outer surfaces of the coating material arranged on the pair of side faces are airtightly joined to the container wall.

4. The resin composite member described in claim 2, characterized in that the resin molded body is a component to be attached to a container, the outer surface of the coating material arranged on one end face is arranged so as to face the outside of the container, and the outer surfaces of the coating material arranged on the pair of side faces are airtightly joined to the container wall.

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