JP4132554B2 - Plastic cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a plastic whose lid is connected to the cap body with a hinge and is plugged into a neck and neck of a plastic bottle or glass bottle filled with liquid contents and is easy to separate and collect during disposal after use. It is about the cap.
[0002]
[Prior art]
Conventionally, for plastic bottles and glass bottles filled with liquid contents, the lid is connected to the cap body with a hinge to ensure safety during distribution and ease of use, and it is attached to the inner peripheral surface of the lower end of the peripheral wall. It has an occlusal ring with the container, and the inside of the peripheral wall is sealed with a pour-out sealing plate with a pour tube on the top, and an annular thin wall weak line is formed at the opening position of this sealing plate. A plastic cap that erected a column having a pull ring at the tip on the upper surface near the wire was attached to the mouth and neck of the container with a stopper. When the contents were used, the lid was opened, the pull ring was pulled with a finger to tear the annular thin line of weakness of the sealing plate, and the sealing plate was opened to open the container.
[0003]
[Problems to be solved by the invention]
However, the above-mentioned plastic cap is difficult to remove from the container because the cap body is firmly fitted to the mouth and neck of the container by occlusion when the material is separated and collected during disposal after use. . In order to solve this problem, there is a cap that tries to easily separate the cap from the container by providing a thin weak line for separation and collection in the cap body, but it is not yet sufficiently stable and easy to separate, Also, a thin line of weakness breaks due to an external impact during distribution, causing a liquid leakage accident, weak cap fitting force on the container, entanglement of the cap with a separation knob on the filling line, or sealing with a pull ring. It was difficult to open the plate. Further, in the case of a snap hinge, there are some which have a large protrusion of the hinge part and poor snapping property.
[0004]
The present invention solves the above-mentioned problems of the conventional plastic cap, is easy to remove from the container at the time of separation and collection, has no risk of liquid leakage during distribution, has a strong fitting force on the container, and is entangled on the filling line. The present invention provides a plastic cap that is easy to open during use.
[0005]
[Means for Solving the Problems]
That is, according to the first aspect of the present invention, the lid is connected to the outer peripheral surface on one side of the peripheral wall of the cap body via a hinge, the occlusal ring with the container is provided on the inner peripheral surface of the lower end of the peripheral wall, and the peripheral wall A concave sealing plate is provided on the inner peripheral surface of the upper end of the pipe to seal the inside by providing a concave sealing plate standing on the upper surface, and an annular thin wall weak line is formed at the opening position of the sealing plate. In a plastic cap in which a pillar having a pull ring at the tip is erected on one side of the upper surface in the vicinity of the inner side of the wire, and on the lower surface, a seal ring with a container mouth neck is provided in the vicinity of one side of the hinge of the peripheral wall A separation knob having a handle portion parallel to the outer peripheral surface of the peripheral wall in a circumferential direction on one side of the hinge is projected on the outer peripheral surface of the upper end of the position, and one side of the hinge at the root of the classification knob on the peripheral wall A slit is formed at an adjacent position, and the lower end of the slit is below the peripheral wall Above the provided longitudinal vent grooves which increase the thickness of the lower and the thin line of weakness that increasing the thickness of the lower from above to reach the lower end inclined toward the other side a circumferential direction of the hinge from the slit lower wall leading to A thin line of weakness extending from the upper end of the slit through the upper end of the peripheral wall to the vicinity of the other side of the hinge at the outer peripheral edge of the sealing plate, in parallel with the peripheral wall. The thin fragile line is formed on the outer peripheral surface side, and is formed on the upper peripheral side of the outer peripheral edge of the outer peripheral edge of the peripheral wall, and the thin fragile line is formed on the outer peripheral surface side. It is a plastic cap.
[0006]
Next, according to a second aspect of the present invention, there is provided a substantially center in the circumferential direction of the occlusal ring provided on the inner peripheral surface of the lower end of the peripheral wall at a portion where a thin line of weakness is not formed on the outer peripheral edge of the sealing plate. 2. A plastic cap according to claim 1 , wherein the portion of the occlusal ring in position is lowered or deleted.
[0007]
Next, the third invention of the present invention, any of claim 1乃optimum 2, characterized in that the upper portion of the hinge band portion of the hinge to a trapezoidal section, and has a convex portion provided on both sides of the trapezoidal upper side Or a plastic cap according to claim 1 .
[0008]
Next, a fourth aspect of the present invention is characterized in that an entanglement preventing protrusion having an inclined upper part in the cross-sectional shape is provided at the outer peripheral position of the lower end of the lid portion facing the sorting knob of the cap body. a plastic cap according to any one of claims 1乃optimum 3,.
[0009]
Next, the fifth aspect of the present invention, any one of claims 1乃optimum 4, characterized in that the formation of the upper end of the strut is provided in the closing plate of the cap body in a V-shape to the left and right 1 The plastic cap according to the item .
[0010]
A sixth aspect of the present invention is a longitudinal support rib for supporting the support column at an angle with respect to the upper surface of the blocking plate at a central portion of the back surface of the support column provided on the closing plate of the cap body. a plastic cap according to any one of claims 1乃optimum 5, characterized in that provided.
[001 1 ]
DETAILED DESCRIPTION OF THE INVENTION
Next, it demonstrates in detail using figures based on embodiment of the plastic cap of this invention.
[001 2 ]
As shown in FIG. 2, the plastic cap (10) according to an embodiment of the present invention has a lid (200) on the outer peripheral surface on one side of the peripheral wall (110) of the cap body (100). It is a cap connected via a hinge (300) such as a hinge (which automatically opens and closes from the position where the lid is opened). As shown in FIG. 10, the lid part (200) is engaged with the occlusal ring cylinder (126) of the closure plate of the cap main body on the inner peripheral surface of the lower end part of the peripheral wall (220). (223) is provided, and an opening / closing knob (221) is projected from the outer peripheral surface of the lower end of the peripheral wall on the opposite side of the hinge (300) connected to the cap main body. The cap main body (100) ) Is provided with an occlusal ring (115) that engages and fits with an occlusal ring (22) provided in the mouth-neck part (21) of the container (20), and a peripheral wall (110). On the inner peripheral surface of the upper end, an occlusal ring tube (126) that engages with and engages with the occlusal ring (223) of the lid portion and a pour tube (127) provided on the inside thereof are recessed. The sealing plate (120) is continuously provided to seal the inside of the peripheral wall (110), An annular thin fragile line (122) having an arbitrary shape is formed at a predetermined opening position of the sealing plate, and an annular pull ring (124) is formed at one end of the upper surface near the inside of the annular thin fragile line. ) And a contact sealing ring (129) for sealing the container in close contact with the top surface of the mouth of the container mouth neck (21) and the container mouth An inner sealing ring (128) for sealing the container in close contact with the inner peripheral surface of the neck of the neck is provided. The contact sealing ring and the inner sealing ring are provided as necessary. Further, as shown in FIG. 1, the cap main body (100) is arranged on the outer peripheral surface of the upper end portion of the peripheral wall (110) near one end (lower side in the drawing) of the hinge (300). A separation knob (130) having a handle portion (132) parallel to the outer peripheral surface of the peripheral wall in the direction protrudes, and is shown at a position adjacent to one side of the hinge of the root portion (131) of the separation knob of the peripheral wall (110). 3 and 4 is formed, and a vertical draft groove (114) is provided from the lower end of the slit (111) to the lower end of the peripheral wall (110) as shown in FIG. A thin fragile line (112) inclined from the lower end of the slit to the other side of the hinge (left side in the figure) and extending to the lower end is formed on the outer peripheral surface side by providing a cut from the inner peripheral surface side of the peripheral wall. ) From the top of the circumference as shown in FIGS. (110) A thin fragile line (121) that reaches the position near the other side (upper side in FIG. 1) of the hinge (300) at the outer peripheral edge of the sealing plate (120) through the upper end is parallel to the peripheral wall (110). And formed on the upper surface side of the outer peripheral edge portion of the sealing plate (120), and continues to the thin fragile line (121) to reach the lower end from the upper end of the peripheral wall (110) as shown in FIGS. A thin weak line (113) is formed on the outer peripheral surface side. The cap of the present invention is produced by an injection molding method using a thermoplastic resin such as polypropylene or polyethylene.
[001 3 ]
Since the plastic cap of the present invention described above forms a thin weak line continuous to the peripheral wall and the sealing plate of the cap body, the cap can be easily separated from the container when it is disposed of after the container is used. Sorting and collection are easy. That is, the cap fitted to the mouth and neck of the container is a slit provided on the peripheral wall when the handle part of the sorting knob attached to the peripheral wall of the cap is raised with a finger and pulled in the circumferential direction on the other side of the hinge. As a result, the peripheral wall continuing to the slit and the thin weak line of the sealing plate are torn, and the peripheral wall on the opposite side of the hinge is largely separated (for example, the central angle is approximately 260 degrees in FIG. 3). As a result, the fitting force of the cap to the container neck becomes weak, and the cap can be easily pulled away from the container by pulling the lid with a finger. Therefore, there is little scattering of the liquid content adhering to the container at the time of removal, and the hand is not injured.
[001 4 ]
Further, as shown in FIGS. 4 and 5, the plastic cap of the present invention is provided with a punching groove (114) and a separation for reducing unreasonable punching resistance provided at the lower end of the peripheral wall (110) from the lower end of the slit (111). The thickness of the thin line of weakness (112, 113) provided in the vertical direction for recovery may be increased from the upper side to the lower side, and in this way, the fitting force to the container neck can be increased.
[001 5 ]
In addition, the occlusal ring portion at the substantially central position in the circumferential direction of the occlusal ring provided on the inner peripheral surface of the lower end of the peripheral wall of the portion where the thin fragile line is not formed on the outer peripheral edge of the sealing plate is lowered or deleted. In this case, the fitting force of the cap to the container mouth neck after separation of the peripheral wall on the opposite side of the hinge is weakened, and the cap can be easily removed from the container.
[001 6 ]
In the case of the snap hinge (300), as shown in FIG. 8, the upper portion of the hinge band (310) may be formed in a trapezoidal cross section, and convex portions (311) may be provided on both sides of the upper side of the trapezoid. In this way, the protrusion of the hinge can be reduced and the snapping property is improved.
[001 7 ]
Further, when the lid is attached to the cap body, as shown in FIGS. 1 and 2, the outer peripheral position of the lower end of the lid 200) facing the separation knob (130) of the cap body (100), as shown in FIGS. An entanglement preventing protrusion (222) inclined upward in the cross-sectional shape may be provided. If it does in this way, the entanglement of the caps resulting from the separation knob on the filling line will not be blocked by the entanglement preventing projection, and high speed filling will be possible.
[001 8 ]
Moreover, as shown in FIG. 9, when the upper end part of the support | pillar (123) standingly arranged in the closure board (120) of a cap main body is formed in the left-right V shape, and the pull ring (124) is continuously provided in the front-end | tip. When the pull ring is pulled with a finger to open, the force concentrates in the direction of the back side of the support column, and the annular thin line weak line of the sealing plate is easily torn.
[00 19 ]
Further, as shown in FIG. 9, the root portion is at an angle (for example, 45 degrees) with respect to the upper surface of the sealing plate at the left and right central positions of the back surface of the support column (123) standing on the closing plate (120) of the cap body. When the vertical support rib (125) that supports the support column is provided, when the pull ring is pulled with a finger to open it, the lower end on the center side of the sealing plate that contacts the sealing plate of the support rib serves as a fulcrum. It becomes easy to tear the annular thin thin line of the sealing plate with a relatively small force.
[002 0 ]
【The invention's effect】
The plastic cap of the present invention forms a continuous thin line of weakness on the peripheral wall and the sealing plate of the cap body, so when discarding after use of the container, the thin line of weakness can be easily torn by a separation knob. In addition, the cap can be separated from the container, and it is easy to separate and collect.
[002 1 ]
In addition, the plastic cap of the present invention can increase the fitting force to the container neck by increasing the thickness of the thin fragile wire for separating and collecting provided vertically in the vertical direction from above. There is no risk of liquid leakage during storage. In addition, by providing the entanglement preventing protrusion on the lid, the entanglement of the caps caused by the sorting knob on the filling line is prevented, and high-speed filling is possible. Also, by forming the upper end of the support column standing on the closing plate in a V shape and connecting the pull ring, it becomes easy to tear the annular thin line of weakness of the sealing plate, and further, the vertical support that supports the back surface of the support plate By providing the ribs, the annular thin fragile line of the sealing plate can be torn with a relatively small force, and the container can be easily opened during use.
[Brief description of the drawings]
FIG. 1 is a bottom view of a plastic cap according to an embodiment of the present invention with a lid portion opened.
FIG. 2 is a side view of FIG.
3 is a cross-sectional view taken along the line AA showing the main part of the cap body shown in FIG. 4. FIG.
4 is a cross-sectional view taken along the line BB showing the main part of the cap body shown in FIG. 3;
5 is a cross-sectional view taken along the line C-C showing the main part of the cap body shown in FIG. 3; FIG.
6 is a bottom view of a portion of the cap body shown by arrow D in FIG. 3. FIG.
7 is an explanatory view showing the structure of the inner surface of FIG. 6. FIG.
FIG. 8 is a cross-sectional view of the periphery of the hinge showing the structure of the hinge.
FIG. 9 is a cross-sectional view showing a structure of a support column erected on a sealing plate of a cap body.
FIG. 10 is a cross-sectional view of a plastic cap according to an embodiment of the present invention when a lid is attached to the cap body.
[Explanation of symbols]
10 ... Cap 20 ... Container 21 ... Mouth and neck portion 22, 115, 223 ... Occlusal ring 100 ... Cap body 110, 220 ... Peripheral wall 111 ... Slit 112, 113, 121, 122 ... Thin-walled weak wire 114 …… Drilling groove 120 …… Blocking plate 123 …… Still 124 …… Pull ring 125 …… Supporting rib 126 …… Occlusal ring cylinder 127 …… Pouring cylinder 128, 211 …… Inner sealing ring 129 …… Contact sealing Ring 130... Separation knob 131... Base portion 132... Pattern portion 200 .. Lid portion 210 .. Top plate 221. ... convex

Claims (6)

  The lid is connected to the outer peripheral surface on one side of the peripheral wall of the cap body via a hinge, the occlusal ring with the container is provided on the inner peripheral surface at the lower end of the peripheral wall, and the extraction tube is disposed on the upper peripheral surface of the peripheral wall. A concave sealing plate standing upright is provided and the inside is sealed, an annular thin line of weakness is formed at the opening position of the sealing plate, on one side of the upper surface near the inside of the annular thin line of weakness, In a plastic cap in which a pillar having a pull ring at the tip is erected and a sealing ring with a container neck is provided on the lower surface, an outer peripheral surface of the hinge is located on the outer peripheral surface of the peripheral wall in the vicinity of one side of the hinge. A separation knob having a handle portion parallel to the outer peripheral surface of the peripheral wall is protruded in the circumferential direction on one side, and a slit is formed at a position adjacent to one side of the hinge of the root portion of the separation knob on the peripheral wall. Thickness below the upper part from the lower end of the peripheral wall to the lower end of the peripheral wall is increased Forming a thin fragile line on the outer peripheral surface side of the peripheral wall, which is provided with a vertical cut groove and has a thickness that is inclined downward from the upper end reaching the lower end by inclining from the lower end of the slit to the other circumferential side of the hinge, A thin line of weakness extending from the upper end of the slit through the upper end of the peripheral wall to the vicinity of the other side of the hinge of the outer peripheral edge of the sealing plate is formed on the upper surface side of the outer peripheral edge of the sealing plate in parallel with the peripheral wall. And a thin-walled fragile line that is continuous with the thin-walled fragile line and has a lower thickness from the upper end to the lower end of the peripheral wall, and is formed on the outer peripheral surface side.   Whether the portion of the occlusal ring at the substantially central position in the circumferential direction of the occlusal ring provided on the inner peripheral surface of the lower end of the peripheral wall of the portion where the thin fragile line is not formed on the outer peripheral edge of the sealing plate is lowered 2. The plastic cap according to claim 1, wherein the plastic cap is deleted. Plastic cap according to any one of claims 1 to 2, characterized in that the upper portion of the hinge band portion of the hinge to a trapezoidal section, and has a convex portion provided on both sides of the trapezoidal upper side. The peripheral position of the lower end of the lid facing the separation knob of the cap body, any one of claims 1 to 3 above the cross-sectional shape, characterized in that projecting from the preventing projection tangle inclined Plastic cap as described in. Plastic cap according to any one of claims 1 to 4, characterized in that formed in a V-shaped upper end portion of the strut is provided in the closing plate of the cap body to the left and right. The longitudinal support rib which supports a support | pillar with the root part having an angle with respect to the upper surface of the said sealing board in the left-right center position of the back surface of the said support | pillar provided in the said closure board of the said cap main body thru | or characterized by the above-mentioned. The plastic cap according to any one of 5.

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