US20090173711A1

US20090173711A1 - Container

Info

Publication number: US20090173711A1
Application number: US12/307,236
Authority: US
Inventors: Takashi Maeda; Masafumi Ooyama; Katsuhito Ujihara; Hirofumi Oosako; Hidetoshi Hirota; Hiroshi Yoneda; Tooru Umekawa
Original assignee: S&B Foods Inc
Current assignee: Shirouma Science Co Ltd; S&B Foods Inc
Priority date: 2006-07-04
Filing date: 2007-02-13
Publication date: 2009-07-09
Also published as: JP2008013192A; JP4757118B2; CN101484364B; WO2008004327A1; CN101484364A

Abstract

If the diameter of an opening side neck portion is decreased to minimize the contact surface between contents and air and a small cap is fitted on a container where there is the concern that exposure to air may alter the quality of contents in the container, there is not only the problem that a gap results between the cap top board and the container opening where adequate locking force is not available but the problem that force is required to open and close the lid, making removal and fitting troublesome.

A container made so a large cap can be fitted thereto by providing a cap locking neck portion 30 whose inner and outer diameters are larger than an opening side neck portion 13 at a container should side neck portion 14 of a container neck 10.

Description

FIELD OF TECHNOLOGY

The present invention relates to a container comprising a cap locking neck portion larger than an opening side neck portion of a neck.

BACKGROUND TECHNOLOGY

As exposure to air can result in changes to the quality of the contents of a container, containers have been fitted with caps for a small opening neck diameter to minimize the contact surface area for the container's contents.

DISCLOSURE OF THE INVENTION

Problem to be Solved by the Invention

However, fitting a small cap with a cap locking neck portion in a small neck matching the small diameter of the opening side neck portion can result in gaps between the container opening and the cap top board as insufficient locking strength is available, so there is not only the problem of an imperfect seal but also of the difficulty of removing and fitting the cap which require strength.
In addition, there have been proposals to fit caps with large external diameters on small-diameter opening side neck portions, but in addition to the problem of insufficient locking strength when the cap locking neck portion has a small diameter similar to the opening side neck portion, there is the problem that when providing a cap locking neck portion at the container shoulder, the cap has to be large in order to cover the neck up to the shoulder portion.

Means to Solve the Problem

Therefore, the present invention provides a container provided with a cap locking neck portion whose inner and outer diameters are larger than those of the opening side neck portion of the container neck as described in claim 1.
In addition, the present invention provides a container for furnishing extrusion flexibility to the cap locking neck in the container described in claim 1 as described in claim 2.
In addition, the present invention provides a container for furnishing an extrusion restoration elasticity to a cap locking neck portion in the container described in claim 1 or 2 as described in claim 3.
In addition, the present invention provides a container in which a cap locking neck portion comprises a screwing construction in the container described in any of claims 1, 2 and 3 as described in claim 4.
In addition, the present invention provides a container in which a screw closing construction comprises a rotational screwing construction no more than 90 degrees of the cap in the container described in claim 4 as described in claim 5.
In addition, the present invention provides a container in which a screwing construction comprises a multi-threaded screwing construction in the container described in claim 4 or 5 as described in claim 6.
In addition, the present invention provides a container provided with a stopper that releases freely with a reverse movement in the cap locking neck portion of the container neck in the container described in any of claims 1 through 6 as described in claim 7.
In addition, the present invention provides a container in which a stopper comprises a click stop mechanism in the container described in claim 7 as described in claim 8.
In addition, the present invention provides a container in which a cap locking neck comprises a press locking construction in the container described in any of claims 1, 2, and 3 as described in claim 9.
In addition, the present invention provides a container constituted such that a press locking mechanism is provided with a locking level portion at a large diameter neck, and mounting of the cap completes when a locking projection provided at a cap skirt portion engages the above-mentioned locking level portion due to pressing in the container described in claim 9 as described in claim 10.
In addition, the present invention provides a container provided with a locking level portion whose neck diameter between a large diameter neck and a container shoulder portion is small in the container described in claim 10 as described in claim 11.
In addition, the present invention provides a container wherein a press locking construction is a click stop type in the container described in claim 9, 10 or 11 as described in claim 12.
In addition, the present invention provides a container wherein a cap adhesion elastic structure is provided at a border portion between the opening side neck portion of the container neck and the cap locking neck portion in the container described in any of claims 1 through 12 as described in claim 13.
In addition, the present invention provides a container whose cap adhesion elastic structure comprises a concave cross-section in the container described in claim 13 as described in claim 14.
In addition, the present invention provides a container in which the inner diameter of a cap adhesion elastic structure is at least as large as that of the opening in the container described in claim 13 or 14 as described in claim 15.
In addition, the present invention provides a container in which the cap adhesion elastic structure comprises a connecting frame portion for connecting the opening side neck portion and the cap locking neck in the container described in claim 13, 14 or 15 as described in claim 16.
In addition, the present invention provides a container whose connecting frame portion comprises a dish shape in the container described in claim 16 as described in claim 17.
In addition, the present invention provides a container whose connecting frame portion comprises a concave cross-section in the container described in claim 16 as described in claim 18.
In addition, the present invention provides a container whose connecting frame portion comprises two levels of concave cross-sections in the container described in claim 18 as described in claim 19.
In addition, the present invention provides a container whose top board portion adheres to the opening top portion of the neck, fitting over the cap in the container described in any of claims 1 through 19 as described in claim 20.
In addition, the present invention provides a container whose seal contacts the opening ceiling portion of the container, and the ceiling board portion adheres to the seal, fitting over the cap in the container described in claim 20 as described in claim 21.
In addition, the present invention provides a container whose neck is molded by means of hollow molding of plastic in the container described in any of claims 1 through 21 as described in claim 22.
In addition, the present invention provides a container comprising a squeeze container described in any of claims 1 through 21 as described in claim 23.

EFFECT OF THE INVENTION

The container according to the present invention has a structure provided with a cap locking neck portion larger than the inner and outer diameters of the opening neck portion at the container shoulder side neck, thereby providing the effect of compatibility with large caps and of obtaining a strong cap locking force through the thick cap locking neck portion as well as the effect that a large volume of contents can be stored inside the neck.
In addition, the present invention has a construction wherein an extrusion flexibility is furnished to the cap locking neck portion in the container described in claim 1, thereby providing the effect that a large amount of content can be stored in the neck and extracted for use as described in claim 2.
In addition, the present invention has a construction wherein an extrusion restorative flexibility is furnished to the cap locking neck portion in the container described in claims 1 and 2, thereby providing the effect that a large amount of content stored in the neck can be extruded as well as that the cap can be immediately replaced because of the immediate restoration resulting from the restorative flexibility subsequent to extrusion.
In addition, the present invention has a construction wherein the cap locking neck portion comprises a screwing construction in the container described in any of claims 1, 2 and 3, thereby providing the effect that a powerful screwing force can be obtained even when the screwing rotation angle of the cap is made small.
In addition, the present invention has a construction wherein a screwing structure comprises a rotation screwing structure no more than 90 degrees of the cap in the container described in claim 4, thereby providing the effect that the cap can be affixed to or removed from the container during use with only a slight rotation angle of 90 degrees or less as described in claim 5.
In addition, the present invention has a construction wherein a screwing structure comprises a multi-threaded screwing structure in the container described in claim 4 or 5, thereby providing the effect that the cap can be firmly and reliably fixed with a multi-threaded parts arranged at many locations even if the screwing rotation angle is set small as described in claim 6.
In addition, the present invention has a construction in which a stopper for stopping is provided that releases freely with a reverse movement in the cap locking neck portion of the container neck in the container described in any of claims 1 through 6, thereby providing the effect that fixing of the cap can be made reliable by means of the stopper as described in claim 7.
In addition, the present invention has a construction wherein a stopper comprises a click stop mechanism in the container described in claim 7, thereby providing the effect that the cap can be fixed with a clicking sensation as described in claim 8.
In addition, the present invention has a construction wherein a cap locking neck portion comprises a press locking construction in the container described in any of claims 1, 2, and 3, thereby providing the effect that the cap can be simply locked with a single movement of pressing without rotation as described in claim 9.
In addition, the present invention has a construction such that a press locking construction is provided with a locking level portion at a large diameter neck, and mounting of the cap completes when a locking projection provided at a cap skirt portion engages the above-mentioned locking level portion due to pressing in the container described in claim 9, thereby providing the effect that a large locking level portion can be provided at a large diameter neck portion and the locking projections of the cap can be reliably locked with a strong force as described in claim 10.
In addition, the present invention has a construction wherein the diameter of the neck of the locking level portion between a large diameter neck and a container shoulder portion is made small in the container described in claim 10, thereby providing the effect that the locking level portion can be constructed merely by providing a large diameter neck between the opening portion of the container neck and the container shoulder portion, as well as that the engaging angle position of the cap and the locking projection can be freely set by providing the locking level portion in an annular form as described in claim 11.
In addition, the present invention has a construction wherein a push locking construction comprises a click stop mechanism in the container described in claim 9, 10, or 11, thereby providing the effect that the cap can be fixed with a simple movement accompanying a clicking sensation as described in claim 12.
In addition, the present invention has a construction wherein a cap adhesion elastic structure is provided at a border portion between the opening side neck portion of the container neck and the cap locking neck in the container described in any of claims 1 through 12, thereby providing the effect that a cap adhesion elasticity is generated when a force is applied in the vertical direction of the neck so a lid body in a board shape pressure joins with the neck opening of the container and the neck opening reliably seals due to the cap adhesion elasticity, and that a gap between the neck opening and the gap top board portion arising due to the thickness of the sealing material and the inside stopper is eliminated due to the gap adhesive elasticity when the cap is mounted after removing the sealing material and the stopper from the neck opening of the container purchased by the user, as well as the effect that sealability due to the adhesion elasticity and an adequate fastening force are attained in the construction wherein the cap is mounted by merely pushing without rotation and in the construction for mounting with only a minute rotation, liquid leaking and the like are prevented, and use is possible free of worry as described in claim 13.
In addition, the present invention has a construction wherein a cap adhesion elastic structure comprises a concave cross-section in the container described in claim 13, thereby providing the effect that the cap adhesion elastic structure is easily constructed through slight compression of the concave cross-section in the container neck as well as an effect that the gap adhesion elastic construction can be provided with the inner diameter of the container neck at least as large as the opening diameter without the requirement of making it more narrow as described in claim 14.
In addition, the present invention has a construction wherein a cap adhesion elastic structure is provided with an inner diameter is at least as large as that of the opening in the container described in claim 13 or 14, thereby providing the effect that smooth extrusion of contents is possible because a narrow squeezing structure with a container opening more narrow than the cap adhesion elastic structure is not added as well as that the adhesiveness of the seal material for the container opening can be inspected from the bottom of the container as described in claim 15.
In addition, the present invention has a construction wherein a cap adhesion elastic structure comprises a connecting frame portion for connecting the opening side neck portion and the cap locking neck portion in the container described in claims 13, 14 or 15, thereby providing the effect that the cap adhesion elastic structure can be formed from the connecting frame portion connecting the opening side neck portion and the cap locking neck portion as described in claim 16.
In addition, the present invention has a construction wherein a connecting frame portion comprises a dish shape in the container described in claim 16, thereby providing the effect that the cap adhesion elastic structure can be constructed with a bending in the dish-shaped connecting frame portion as described in claim 17.
In addition, the present invention has a construction wherein a connecting frame portion comprises a concave cross-section in the container described in claim 16, thereby providing the effect that the cap adhesion elastic structure can easily be constructed by contracting the concave cross-section as well as the effect that a cap adhesion elastic structure can easily be provided wherein the inner diameter of the container neck is at least as large as the diameter of the opening without the container neck needing to be narrowed as described in claim 18.
In addition, the present invention has a construction wherein a connecting frame portion comprises two levels of concave cross-sections in the container described in claim 18, thereby providing the effect that the cap adhesion elastic structure can be constructed such that the concave cross-section can be easily contracted as well as that a cap adhesion elastic structure can be provided wherein the inner diameter of the container neck is at least as large as the diameter of the opening without the container neck needing to be narrowed as described in claim 19.
In addition, the present invention has a construction wherein a top board portion adheres to the opening top portion of the neck, fitting over the cap in the container described in any of claims 1 through 19, thereby providing the effect that sealability can be obtained by closing the gap in the sealing material or the like when the cap is mounted after removing an inner stopper or sealing material because the cap top board portion maintains the cap adhesion elasticity and adheres to the opening top portion of the neck when the cap is covered as described in claim 20.
In addition, the present invention has a construction wherein a seal contacts the opening top portion of the container, and a top board portion adheres to the seal, fitting over the cap in the container described in claim 20, thereby providing the effect that attachment work can be reliably carried out with heat sealing of the sealing material to the opening top portion from above the cap because the cap top board portion adheres to the sealing material on the opening top portion due to the cap adhesion elasticity as described in claim 21.
In addition, the present invention has a construction wherein a container neck is molded by means of hollow molding of plastic in the container described in any of claims 1 through 21, thereby providing the effect that the container can be easily formed by means of hollow molding of plastic as described in claim 22.
In addition, the present invention has a construction wherein the container described in claims 1 through 22 is a squeeze container, thereby providing the effect that the content of the container can be stored, extracted and used up to a cap locking neck portion whose inner and outer diameters are larger than the opening side neck portion as described in claim 23.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention is described below using embodiments illustrated below.

Embodiment 1

For the embodiment shown in FIGS. 1 through 5, a container 1 according to the present invention has a construction provided with a cap locking neck portion 30 larger than both the inner and outer diameters of an opening side neck portion 13 at a container shoulder side neck portion 14 of a container neck 10, thereby providing the effect that an easily gripped large cap can be used and a powerful cap locking force is obtained by means of a wide cap locking neck 30 as well as the effect that a large amount of content can be stored within the neck.
In addition, the present invention has a construction wherein an extrusion flexibility is furnished to the cap locking neck portion 30, thereby providing the effect that a large amount of content can be stored in the neck and extracted for use.
In addition, the present invention has a construction wherein an extrusion restorative flexibility is furnished to the cap locking neck portion 30, thereby providing the effect that a large amount of content can be stored in the neck and extruded as well as that a cap can be immediately replaced because of the immediate restoration resulting from the restorative flexibility subsequent to extrusion.

Embodiment 2

For the illustrated embodiment, the above-mentioned cap locking neck portion 30 is provided at the container shoulder side neck portion 14 constructed with a larger diameter than the opening side neck portion 13 of the container neck 10.
The wider the outer diameter of the thick neck portion in comparison to the outer diameter of the thin neck portion, the larger the cap locking neck portion 30 that can be used, and the larger the locking effect that can be expected.
It is appropriate that the outer diameter of the thick neck portion be at least roughly 1.2 times larger than the outer diameter of the thin neck portion, with somewhere between 1.6 and 2.4 times larger preferable for ordinary caps, although the factor can be either smaller or larger for special containers and/or caps.
For the illustrated embodiment, the cap locking neck portion 30 comprises a screw closing construction and is provided with four large-pitch male threads 31 at intervals of 90 degrees or less such that they do not overlap, such that the cap can be completely mounted with a rotation of substantially 90 degrees or less. Although omitted from the drawings, the cap is provided with four female threads for threading on the male threads 31, for a construction that enables the cap to be screwed and mounted with a sensation approximating a single movement.
According to the embodiment, when the male thread 31 comprises a flexible elastic body, the constitution is such that simply pressing the cap will advance the female threads of the cap over the male threads 31 for a fitted engagement, subsequent to which the cap may be firmly tightened simply by applying a rotational force in the threading direction.

Embodiment 3

In addition, the cap locking neck portion 30 of the container neck 10 is provided with a stopper 32 to prevent reverse rotation, and is constructed such that fixing of the mounted cap is secured by means of the stopper 32.
For the illustrated embodiment, the stopper 32 is placed in four locations at 90 degree intervals on a border portion 23 away from the above-mentioned opening side neck portion 13, and is constructed such that when a stopper on the cap side omitted in the drawings crosses the stopper 32 when the mounting completes, they engage, checking reverse rotation of the cap.
In addition, for the embodiment of the present invention, the stopper 32 is constructed such as to engage with a flexible deformation, engaging with a click stop due to the flexible release, enabling the cap to be fixed with a click sensation.

Embodiment 4

In addition, for other embodiments not illustrated, the cap locking neck portion 30 comprises a press locking construction, provided with a locking level 33 between the cap locking neck portion 30 and the container shoulder side neck portion 14, enabling a construction wherein mounting of the cap completes when the locking projection provided in the cap skirt portion engaged the locking level 33 due to pressing. Therefore, a construction is possible wherein the locking level 33 on the container side and the locking projection are constructed from a flexible, elastic body, the cap is mounted by a pressing operation with a click-stop method, and the cap comes off when the locking projection of the cap exceeds the locking level portion 33 when the cap is simply tugged after using the container.
In addition, for the embodiment of the present invention, a parison of a plastic tube corresponding to the entire container, including the cap locking neck portion 30 of the container, is introduced into an external mold, which is then closed, sandwiching the bottom therein, and through a conventionally known hollow molding process for feeding compressed air from the neck opening 12 side, a container of nearly uniform thickness is formed, making it possible to easily mold a container from hollow molding of plastic. In addition, for the embodiment of the present invention, a container has a construction comprising a squeeze container, enabling not only a large of amount of content to be filled into the container up to the thick neck 14 of the container opening 12, but enabling sealing with the thick cap locking neck portion in which content is stuck so that air is checked from flowing into the container even when the squeezed container body attempts to restore itself.

Embodiment 5

In addition, according to the embodiment shown in FIGS. 1 through 5, a container body 1 according to the present invention has a construction wherein a cap adhesion elastic structure 20 is provided at the border portion between the opening side neck portion 13 of the neck 10 and the cap locking neck portion 30.
The cap adhesion elastic structure 20 has a structure that maintains cap adhesion elasticity when a force is applied in the vertical direction on the neck 10 to which the cap is attached, enabling compression in the vertical direction.
Consequently, the neck opening 12 can be reliably sealed by means of the cap adhesion elasticity when the board-shaped lid body pressure joins the neck opening top surface 11 of the container body 1.
As a result, the gap between the cap top board portion and the neck portion opening board surface 11 arising because there is no longer any thickness in the sealing material or the inner stopper elastically deforms and disappears along with compression of the cap adhesion elastic structure 20, and the sealability due to the cap is maintained even when the user replaces the cap after removing an inner stopper and/or sealing material from container 1, having the inner stopper and/or the sealing material, purchased by the user.
In particular, for constructions wherein the cap is mounted by simply pressing without rotation and constructions wherein mounting is with a minute rotation, a sealing strength for the container opening is obtained from the adequate mounting strength of the cap adhesion elastic structure 20, liquid leaking and the like are prevented, and use is possible free of worry .
In addition, the present invention has a construction wherein a cap adhesion elastic structure 20 is provided between the opening top surface 11 of the container neck 10 and the cap locking neck portion 30, the cap top board portion thereby contacts the opening top surface 11, locking the cap, and sealability of the cap is obtained from the elasticity of the cap adhesion elastic structure 20 between the container neck 10 and the cap locking neck portion 30.

Embodiment 6

In another embodiment of the present invention, it is possible to reliably carry out the application of a sealing material from above the cap by means of heat sealing during the manufacture of the container in which the sealing material has been applied to the container opening top surface 11 because the cap top board adheres to the sealing material on the opening top surface 11 due to cap adhesion elasticity when the sealing material contacts the opening top surface 11 of the container body 1, and the sealing material adheres to the top board portion, fitting over the cap.

Embodiment 7

In addition, for the next illustrated embodiment, the cap adhesion elastic structure 20 in the container body 1 of the present invention has a construction comprising, in order from the opening side going outward, a small concave cross-section portion 21 projecting in a peak form, a large concave cross-section portion 22, and a border portion 23 either flat-surfaced or gently sloping.
In addition, this cap adhesion elastic structure 20 comprises, in order from the opening going inward, a small concave cross-section portion 24 projecting in a trough form, and a large concave cross-section portion 25. The cross-section portion 24 comprises the lower piece portion of the cross-section portion 21 and the upper piece portion of the cross-section portion 22, and the cross-section portion 25 comprises the lower piece portion of the cross-section portion 22 and the border portion 23.
Furthermore, trough-shaped concave cross-sections 24 and 25 of the cap adhesion elastic structure 20 are provided with an inner diameter at least as large as the opening 12, and because the cap adhesion elastic structure 20 therefore does not add a squeezing structure more narrow than the container opening 12 at the container neck 10, the inner contents can be smoothly extracted, and inspection of the adhesive state of the seal material for the container internal opening 12 from the bottom of the container body can made easy at the time of manufacture.
For the illustrated embodiment, the substantial cap adhesion elasticity of the cap adhesion elastic structure 20 is borne mainly by the elasticity of the large concave-shaped cross-section 22 in a peak form, whereas the small concave cross-section 21 contacts the inner cylinder portion of the cap covering the neck 10 to mainly function to support the sealability with the opening top surface 11 of the cap top board portion, and the border portion 23 functions mainly as a border portion for connecting the cross section 22 of the cap adhesion elastic structure 20 and the cap locking neck portion 30.

Embodiment 8

Consequently, an embodiment wherein the cap adhesion elastic structure 20 has one concave cross-section portion 21 or 22 rather than two continuous cross-section portions as in the embodiment is fine, in which case, the border portion 23 is also unneeded. As the cap adhesion elastic structures 20, the concave cross-section portions 21, 22, 24 and 25 all have a construction for maintaining cap adhesion elasticity in the vertical direction, deforming and shrinking slightly for elastic restoration, completely different from the folding bellows structure.

Embodiment 9

For the embodiment described in FIG. 6 and FIG. 7, the adhesion elastic structure 20 has a construction wherein three outwardly projecting small concave cross-sections 21 and one large concave cross-section 22 as well as three inwardly projecting small concave cross-sections 24 and one large concave cross-section 25 are provided, connecting to the cap locking portion 30 on the thick neck through the border portion 23, and as the adhesion elastic structure 20, the concave cross-sections 21, 22, 24 and 25 all maintain upright elasticity in the vertical direction, deforming and shrinking for elastic restoration.

Embodiment 10

For the embodiment described in FIG. 8 and FIG. 9, the adhesion elastic structure 20 has a construction wherein two outwardly projecting small concave cross-sections 21 and three large concave cross-sections 22 as well as two inwardly projecting small concave cross-sections 24 and three large concave cross-sections 25 are provided, connecting to the cap locking portion 30 on the thick neck through the border portion 23, and as the adhesion elastic structure 20, the concave cross-sections 21, 22, 24 and 25 all maintain upright elasticity in the vertical direction, deforming and shrinking for elastic restoration.

Embodiment 11

For the embodiment described in FIG. 10 and FIG. 11, the adhesion elastic structure 20 has a construction wherein one outwardly projecting small concave cross-section 21 and two large concave cross-sections 22 as well as one inwardly projecting small concave cross-section 24 and two large concave cross-sections 25 are provided, connecting to the cap locking portion 30 on the thick neck through the border portion 23, and as the adhesion elastic structure 20, the concave cross-sections 21, 22, 24 and 25 all maintain upright elasticity in the vertical direction, deforming and shrinking for elastic restoration.

Embodiment 12

For the embodiment described in FIG. 12 and FIG. 13, the adhesion elastic structure 20 has a construction wherein two outwardly projecting small concave cross-sections 21 and two large concave cross-sections 22 as well as two inwardly projecting small concave cross-sections 24 and two large concave cross-sections 25 are provided, connecting to the cap locking portion 30 on the thick neck through the border portion 23, and as the adhesion elastic structure 20, the concave cross-sections 21, 22, 24 and 25 all maintain upright elasticity in the vertical direction, deforming and shrinking for elastic restoration.

Embodiment 13

In addition, the adhesion elastic structure 20 may be used in an embodiment without any of the concave cross-sections 21, 22, 24 or 25 provided as in the above-mentioned embodiments, using instead only a border portion 23 with a flat or gradually sloping surface connecting the small diameter opening side neck portion 13 and the large diameter container shoulder side neck portion 14. In the case of gradually sloping surfaces, with dish-shaped sloping surfaces, for example, the elastic deformation strength can be set stronger for downward slopes than it is for horizontal surfaces as illustrated, and the elastic deformation strength can be set weaker in the case of upward slopes than for horizontal surfaces.
For the illustrated embodiment, the use of hollow molding of plastic molds a thicker container shoulder side neck portion 14 in comparison to the nearly uniform thickness of the opening side neck portion 13 of the container neck 10 for a structure that provides the connection frame portion with an adhesion elastic structure 20. Consequently, the concave cross-sections 21, 22, 24 and 25 and the border portion 23 composing the adhesion elastic structure 20 in the above-mentioned embodiments compose the connecting frame portion according to the present invention.

Embodiment 14

FIGS. 14 through 16 show an embodiment of the cap 40, produced as one piece by injection molding of comparatively hard plastic, in which 48 engaging teeth 42 are provided inside the skirt portion 41. 43 is a female thread in 4 positions capable of threading at a substantially 90° angle and provided directly above the engaging teeth 42, 44 is the top board portion, and 45 is the cap portion opening downward within the neck, provided from the center of the top board portion 44 to directly above the female threads 43 in four cylindrical positions concentric with the skirt portion 41.
The neck-internal cap 45 is provided with an upper cylinder 48 for covering the upper half portion of the thin-neck container neck 10 and a lower cylinder 49 in which notches 46 are provided relative to concave cross-section portions 21 and 22 with a somewhat thick neck shape, and is constituted such that the locking piece 47 provided inside the bottom edge of the lower cylinder 49 fits elastically into the large diameter concave cross-section portion 22 of the container 1 by means of the notches 46 accompanying an elastic click sensation.

Embodiment 15

FIGS. 17 through 20 show an embodiment of the tube container 1, a squeeze tube container produced by blow molding of comparatively soft plastic and provided with 9 integrated locking teeth 34 at equal intervals on the container shoulder portion 35. 31 is male threads at four locations on the thick neck portion, provided to thread the female threads 43 in four locations on the cap 40. 13 is a thin-neck opening side neck, and concave cross-sections 21 and 22 capable of elastic deformation in the vertical direction are provided between the opening side neck portion 13 and female threads 31 in four locations such as to contact the top board portion 44 when the cap is being mounted and pressure attach to the opening portion 11. The cap portion 45 inside the neck of the cap 40 is provided to fit onto the opening side neck 13, including the bellows-shaped portions 21 and 22. It is preferable that the tube container 1 is formed by a transparent plastic material allowing the contents to be seen. If it holds contents up to the swell-neck portion provided with the four female threads 31, the contents can be squeezed out by pressing up to the swell-neck during use.
FIG. 20 is an enlarged schematic view of the essential portion showing the state of engagement of the engaging teeth 42 of the cap 40 and the locking teeth 34 of the container 1.

BRIEF DESCRIPTION OF THE DRAWINGS

(FIG. 1) Frontal view of one embodiment of the container of the present invention

(FIG. 2) Side view thereof

(FIG. 3) Surface view thereof

(FIG. 4) Bottom view thereof

(FIG. 5) Center vertical cross-section view of the essential portion

(FIG. 6) Frontal view of another embodiment of the container of the present invention

(FIG. 7) Expanded edge view of line A-A in FIG. 6

(FIG. 8) Frontal view of another embodiment of the container of the present invention

(FIG. 9) Expanded edge view of line A-A in FIG. 6

(FIG. 10) Frontal view of another embodiment of the container of the present invention

(FIG. 11) Expanded edge view of line A-A in FIG. 6

(FIG. 12) Frontal view of another embodiment of the container of the present invention

(FIG. 13) Expanded edge view of line A-A in FIG. 6

(FIG. 14) Frontal view of an embodiment of the cap of the present invention

(FIG. 15) Bottom view thereof

(FIG. 16) Center vertical cross-section view of the frontal view thereof

(FIG. 17) Enlarged frontal view of the essential portion of another embodiment of the container of the present invention

(FIG. 18) Surface view thereof

(FIG. 19) Use aspect view thereof

(FIG. 20) Enlarged explanatory view of the essential portion thereof

EXPLANATION OF REFERENCES

1 Container Body
10 Neck
11 Neck Opening Top Surface
12 Neck Opening
13 Opening Side Neck Portion
14 Container Shoulder Side Neck Portion
20 Upright Elastic Construction
21, 22 Concave Cross-Section Portions
23 Border Portion
24, 25 Concave Cross-Section Portions
30 Cap Locking Neck Portion
31 Male Thread
32 Stopper
33 Locking Level Portion
34 Locking Tooth
35 Container Shoulder
40 Cap
41 Skirt Portion
42 Engaging Tooth
43 Female Thread
44 Top Portion
45 Neck-Internal Cap Portion
46 Notched Portion
47 Locking Piece
48 Upper Cylinder
49 Lower Cylinder

Claims

1. A container provided with a cap locking neck whose inner and outer diameters are larger than those of an opening side neck portion at a container shoulder side neck portion of a container neck.

2. A container for furnishing extrusion flexibility to a cap locking neck portion in the container described in claim 1.

3. A container for furnishing extrusion restoration elasticity to a cap locking neck portion in the container described in claim 1.

4. A container in which a cap locking neck portion comprises a screwing construction in the container described in claim 1.

5. A container in which a screwing construction comprises a rotation screw closing construction no more than 90 degrees of a cap in the container described in claim 4.

6. A container in which a screwing construction comprises a multi-threaded screwing construction in the container described in claim 4.

7. A container provided with a stopping stopper that can be released with a reverse movement at a cap locking neck portion of a container neck in the container described in claim 1.

8. A container in which a stopper comprises a click stop mechanism in the container described in claim 7.

9. A container in which a cap locking neck portion comprises a press locking construction in the container described in claim 1.

10. A container constituted such that a push locking construction is provided with a locking level portion at a large diameter neck, and mounting of a cap completes when a locking projection provided at a cap skirt portion engages the above-mentioned locking level portion due to pushing in the container described in claim 9.

11. A container provided with a locking level portion where a neck portion between a large diameter neck portion and a container shoulder portion is made with a small diameter in the container described in claim 10.

12. A container wherein a push locking construction is a click stop type in the container described in claim 9.

13. A container wherein a border portion between an opening side neck portion of a container neck and a cap locking neck portion is a cap adhesion elastic structure in the container described in claim 1.

14. A container whose cap adhesion elastic structure comprises a concave cross-section in the container described in claim 13.

15. A container whose cap adhesion elastic structure is provided an inner diameter at least as large as that of an opening in the container described in claim 13.

16. A container whose cap adhesion elastic structure comprises a connecting frame portion for connecting to an opening side neck portion and a cap locking neck portion in the container described in claim 13.

17. A container whose connecting frame portion comprises a dish shape in the container described in claim 16.

18. A container whose connecting frame portion comprises a concave cross-section in the container described in claim 16.

19. A container whose connecting frame portion comprises two levels of concave cross-sections in the container described in claim 18.

20. A container whose top board portion adheres to an opening top board portion of a neck, covering a cap in the container described in claim 1.

21. A container whose seal contacts an opening top portion of the container, and a ceiling top portion adheres to the seal, covering a cap in the container described in claim 20.

22. A container whose neck is molded by hollow molding of plastic in the container described in claim 1.

23. A container comprising a squeeze container described in claim 1.