JP4333228B2 - Spout with wide mating white - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention protrudes from a bag-like container pouring position stored in an outer box of a bag-in-box used for fruit juice, alcoholic beverages, seasonings, chemicals, etc., and has a wide fit with the cap It relates to spout with white.
[0002]
[Prior art]
Conventionally, a spout (outlet tool) is projected by thermal fusion at the pouring position of the bag-like container accommodated in the outer box of the bag-in-box used for the liquid contents. Cap (300) having two upper and lower occlusal rings (321, 322) on the inner peripheral surface of the peripheral wall that engages in two stages for aseptic as shown in FIG. 3 (temporary mounting before filling and main mounting after filling), cock (300) A cap with a cap and a cap with a dispenser function were attached and used.
[0003]
[Problems to be solved by the invention]
By the way, the spout (100) used for the above-mentioned conventional bag-shaped container is attached to the outer peripheral surface of the lower end of the annular pedestal (110), for example, as shown in FIG. 2 (a). A flange (130) for heat-sealing the inner surface and the upper surface of the outer peripheral edge of the hole (210) is provided around, and a pouring tube (120) is erected on the upper surface of the annular pedestal portion (110). 120), an occlusal ring (121) with the cap shown in FIG. 2 (b) is provided around the upper end outer circumferential surface, and three engagements are made on the outer circumferential surface of the extraction cylinder between the occlusal ring and the annular pedestal. A ring (123) was provided. When the cap is fitted into the spout pipe, usually, for example, as shown in FIG. 3, the inner sealing ring (311) suspended from the lower surface of the top plate (310) of the cap (300). The outer peripheral surface tightly seals with the inner peripheral surface of the upper end portion of the spout tube (120) of the spout (100). Therefore, the tolerance of the dimensional accuracy of the inner diameter of the upper end portion of the spout tube of the spout is ± The spout outside the tolerance range was very narrow as 0.15 mm, and the fitting with the cap was poor. Moreover, as shown in FIG.2 (b), the thickness of the upper end part of the spout extraction pipe | tube of a spout has provided the occlusal ring (121) with the cap in the upper end outer peripheral surface of the extraction pipe | tube (120). For this reason, the spout is relatively thick, and a weld mark (unevenness at the merged portion of the molten resin flow) and sink marks (cooling dents) are likely to occur on the inner peripheral surface of the upper end of the spout tube.
[0004]
The present invention solves the problem of the spout used in the above-described conventional bag-like container, and the tolerance of the dimensional accuracy of the inner diameter of the upper end of the spout pipe is extremely wide. It is an object of the present invention to provide a spout having a wide fitting white where weld marks and sink marks are unlikely to occur on the inner peripheral surface of the upper end portion.
[0005]
[Means for Solving the Problems]
That is, the present invention provides a pour tube upright on an annular pedestal that surrounds the flange on the outer peripheral surface at the lower end, and an occlusal ring with the cap on the outer peripheral surface of the upper end of the pour tube. The spout is provided with a plurality of engagement rings on the outer peripheral surface of the extraction cylinder between the annular pedestal and the annular pedestal. The inner surface is perpendicular to the inner peripheral surface and the outer surface is curved at substantially the center position of the upper surface of the extraction cylinder. A spout having a wide fitting shirk characterized by providing a fitting relaxation annular groove having a U-shaped vertical cross section .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a spout having a wide fitting white according to the present invention will be described in detail with reference to the drawings.
FIG. 1A is a cross-sectional view of a spout having a wide fitting white according to one embodiment, and FIG. 1B is an enlarged cross-sectional view of a portion A thereof.
[0008]
As shown in FIG. 1 (a), the spout (100) having the wide fitting white of the present embodiment is poured into an annular pedestal (110) having a flange (130) around its lower end outer peripheral surface. A cylinder (120) is erected, and an occlusal ring (121) with a cap is provided around the outer peripheral surface of the upper end of the extraction cylinder, and three pipes are provided on the outer peripheral surface of the extraction cylinder between the engagement ring and the annular pedestal. An engagement ring (123) is provided, and, as shown in FIG. 1 (b), a fitting relaxation annular groove (122) is formed along the inner peripheral surface at a substantially central position on the upper surface of the dispensing tube (120). It is provided. Spout is produced by an injection molding method using a thermoplastic resin such as polyethylene. This spout is generally used for 5 to 20 liter bag-in-box bags.
[0009]
For example, as shown in FIG. 1B, the fitting relaxation annular groove (122) provided on the upper surface of the above-described dispensing tube is a U-shaped one having a vertical cross-sectional shape, a vertical inner side and a curved outer surface. Yes, the position and size are the inner circumference of the extraction cylinder when the outer diameter of the occlusal ring is φ36.5 mm, the outer diameter of the extraction cylinder is φ34 mm, and the inner diameter of the upper end of the extraction cylinder is φ29.5 mm And 1 mm wide, 1 mm wide, and 1.6 mm deep. In addition, by making the shape of the fitting relaxation annular groove into a U-shaped vertical cross section with a vertical inside and a curved outside, it is possible to steal without compromising the required strength of the outer occlusal ring and the inner peripheral surface. It becomes possible.
[0010]
In the spout of this embodiment, an elastic restoring force is applied to the inner peripheral edge of the upper end of the pouring cylinder by the action of the fitting relaxation annular groove provided on the upper surface of the pouring cylinder. It is possible to widen the tolerance of the dimensional accuracy of the inner diameter of the upper end portion. For example, as described above, the tolerance of the dimensional accuracy of the inner diameter of the upper end of the dispensing cylinder when the fitting relaxation annular groove is not provided on the upper surface of the dispensing cylinder is ± 0.15 mm. By providing the groove, the tolerance of dimensional accuracy was ± 0.30 mm, and the fitting margin for the cap could be widened.
[0011]
In addition, when the spout of the present embodiment is injection-molded with polyethylene as a molding material, the fitting relaxation annular groove provided on the upper surface of the dispensing tube becomes a stealer, so that the upper end of the dispensing tube of the spout is The wall thickness does not become so thick, and the occurrence of weld marks and sink marks can be prevented.
[0012]
【The invention's effect】
The spout having a wide fitting shell of the present invention is provided with a fitting relaxation annular groove on the upper surface of the dispensing cylinder, and when the spout is manufactured by an injection molding method, this fitting relaxation annular groove becomes a stealer. , Weld marks and sink marks are unlikely to occur on the inner peripheral surface of the upper end portion of the dispensing tube. Further, when the cap is fitted, the tolerance of the dimensional accuracy of the inner diameter of the upper end portion of the spout tube of the spout with respect to the cap can be made extremely wide.
[Brief description of the drawings]
FIG. 1 (a) is a cross-sectional view of a spout having a wide fitting scissors according to an embodiment of the present invention, and FIG. 1 (b) is an enlarged cross-sectional view of an A portion thereof.
FIG. 2 (a) is a cross-sectional view of a conventional spout as an example, and FIG. 2 (b) is an enlarged cross-sectional view of a B portion thereof.
FIG. 3 is an explanatory view showing an example of a fitting state when a cap is fitted to a spout.
[Explanation of symbols]
100 ... Spout 110 ... Annular pedestal 120 ... Dispensing cylinder 121, 321, 322 ... Occlusal ring 122 ... Mating relief annular groove 123 ... Engagement ring 130 ... Flange 200 ... Bag-shaped container 210 ... Spout mounting hole 300 ... Cap 310 ... Top plate 311 ... Inner sealing ring 320 ... Peripheral wall

Claims (1)

A pour tube is erected on an annular pedestal that surrounds the flange on the lower end outer peripheral surface, and an occlusal ring with a cap is provided around the upper end outer peripheral surface of the pour tube, between the occlusal ring and the annular pedestal. In a spout having a plurality of engagement rings on the outer peripheral surface of the pouring cylinder, a U-shaped vertical whose inner side is vertical along the inner peripheral surface and whose outer surface is curved is approximately at the center of the upper surface of the pouring cylinder. A spout having a wide fitting silo characterized by providing a fitting relaxation annular groove having a cross-sectional shape .

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