JPH0126581Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention securely fixes the knob to the partition plate,
This invention relates to a can whose purpose is to make it easy and accurate to tear apart the partition plate, and is used in the field of manufacturing cans.

(Conventional technology/problems) When making a rupture incision through a score on a synthetic resin film partition plate, in order to be able to open it easily, the tab must be securely attached to the partition plate and removed during use. It is required that there is no risk. Conventionally, heat welding has been mainly used as a technique for fixing knobs to partition plates made of synthetic resin film, but there was a risk that the material would deteriorate.

Furthermore, in order to be able to open easily, the partition plate needs to be fixed under tension. Heat shrinkage is known as a technique for tensioning and fixing partition plates, but it tends to be insufficient to withstand the tensile force when opening.

(Means for Solving the Problems) The can of this invention has a partition plate provided with a score part and a knob piece attached to the can opening, and is covered with a lid, and the can mouth has a partition plate provided with a score part and a knob piece. In this method, the mounting holes are fitted into the hollow protrusions of the partition plate, and the hollow protrusions are tightly filled with a filling material for deforming the hollow protrusions, thereby deforming the heads of the hollow protrusions under pressure. It is fixed to. The mounting position of the knob piece is on the opening side of the partition plate, which is close to the end of the chord-shaped score for forming a sliding cutting edge.

Further, the partition plate is made of synthetic resin film,
Its peripheral edge is clamped and fixed between the can body wall and a metal ring.

(Function of the invention) In this invention, the filler filled in the hollow protrusions of the partition plate has the effect of imparting rigidity to the hollow protrusions obtained by molding the partition plate made of a non-rigid synthetic resin film, This allows the tabs to be caulked and fixed to the synthetic resin film partition plate.

In addition to fixing the partition plate to the mouth of the can, the metal ring has its lower side in contact with the partition plate, so that when the partition plate is pulled upward during opening, the breaking score part is fixed. It has the effect of pressing and supporting.

Furthermore, the knob piece attached close to the end of the score for forming a sliding incisal edge has the effect of cutting off the transition part of the score for breaking to the score for forming a sliding incisal edge with a force in the direction of arrow 16 in FIG. play.

(Example) This invention will be described below based on an example shown in the drawings.

A synthetic resin film 2 is stretched over the mouth of the can body 1 as a partition plate, and on the upper surface of the synthetic resin film 2,
A score 3 for breaking is provided in an incomplete annular shape (arc shape) along the periphery of the can opening, and a score 4 for forming a sliding edge is provided linearly from one end of the score 3 for breaking toward the other end. (chord-like), and the end of the score 3 and the score 4
A small non-scored part is provided between the edge of the
Insert the knob 6 toward the sliding incisal edge forming score 4 side of the opening 5 surrounded by both the scores 3, 4, and insert the proximal end 6 thereof.
The can is constructed by fixing the portion a close to the tearing score 3.

The synthetic resin film 2 is circular, and its peripheral edge is clamped between the inner wall of the can body 1 and the outer wall of a metal ring 7 fitted into the can opening, and the lower end of the metal ring 7 An annular portion 8 with a substantially circular cross section provided on the side is brought into contact with the peripheral edge of the synthetic resin film 2 and deformed under pressure toward the can wall, thereby being pressurized toward the can body wall and evenly tensioned. has been done.

In order to stretch the synthetic resin film 2 as described above, the synthetic resin film 2 formed into a push-top shape and the metal ring 7 are inserted into the upper end of the can body 1, and then the The resin film 2 and the metal ring 7 are overlapped and secured by winding. Said metal ring 7
An annular portion 8 having a circular cross section is provided at the lower end of the annular portion 8, and the lower wall of the annular portion 8 is brought into contact with the synthetic resin film 2. In the above, when the annular portion 8 of the metal ring 7 is deformed by applying pressure toward the can body wall, the peripheral edge of the synthetic resin film 2 is pulled toward the can body wall,
The whole thing is evenly tensioned.

Incidentally, it is not necessary to provide the annular portion 8 on the metal ring; instead, the lower part of the metal ring is slightly bulged toward the can body wall to provide an annular recessed portion, thereby pressing the synthetic resin film toward the can body wall. It can also make you nervous.

One side of the opening 5 of the synthetic resin film 2 (in the example, a score 3 for breaking and a score 4 for forming a sliding incisal edge)
A hollow protrusion 9 is formed in the vicinity of the end of the handle, and a mounting hole for the knob piece 6 is fitted into the hollow protrusion 9.
By tightly filling the hollow protrusion 9 with a filler for deforming the hollow protrusion and deforming the head of the hollow protrusion into a flattened shape, the hooking part 9a and the upper surface of the knob piece 6 are engaged, and the knob can be tightened. The piece 6 is fixed to the synthetic resin film 2.

In order to fix the knob as described above, a hollow cylindrical protrusion 9 with a top is heated and formed on the synthetic resin film 2, and then the attachment hole of the knob 6 is fitted into the protrusion 9, and the protrusion 9 A sphere 10 made of polyethylene is inserted as a filler into the inside of the holder, and then the protrusion 9 and the spherical element 10 are heated and deformed under pressure using a heated caulking mold to obtain the hooking part 9a.

In addition to polyethylene and other low-melting point synthetic resins, the spheres may also be made of soft metals such as aluminum that are easily deformed under pressure; in this case, heating is not necessary. Moreover, this shape is not limited to a sphere. Furthermore, the filler does not necessarily have to be solid, but may be hollow.

In the figure, reference numeral 11 denotes a non-scored portion interposed between the end of the tearing score 3 and the end of the sliding incisal edge forming score 4, and its width is usually 1 to 2 mm.

In the figure, reference numeral 12 denotes a can lid, which is made by fixing the periphery of a cap-shaped metal plate 14 (top plate) to a synthetic resin ring 13 having an annular hook portion that engages with the seaming portion of the can opening.

According to the above embodiment, the synthetic resin film 2 is clamped between the metal ring 7 and the can body wall as a partition plate, and the synthetic resin film 2 is held by the metal ring 7.
Since the material is pressurized in the direction of the can body wall, a tensioned partition plate can be obtained without requiring processes such as heat shrinkage. Since the lower side of the metal ring 7 is brought into contact with the synthetic resin film 2, the outer side of the tearing score is pressed down by the metal ring 7. Therefore, even when pulling up the knob at the time of opening, the partition plate is not pulled upward and the opening can be performed without applying unnecessary force. Therefore, by adjusting the force with which the knob is pulled up, the magnitude of the force applied to the score can be easily finely adjusted, making it easy to accurately cut along the score. Note that the synthetic resin film may be stretched by heat shrinkage or the like.

Further, according to the above embodiment, the partition plate is provided with an annular incomplete breaking score 3 and a linear sliding cutting edge forming score 4, and the knob piece 6 is attached to the end of the sliding cutting edge forming score 4. Since it was installed close to the knob 6
The opening 5 can be separated by making a cut in the tearing score 3 at the base end 6a (at this time, the non-scored part 11 can also be cut) and then pulling up the knob 6. If you pull up the knob 6 again,
The tearing score 3 and the sliding edge forming score 4 are torn off at the same time. Therefore, a straight incisal edge can be obtained at the same time. Furthermore, since the non-scored portion 11 is provided, there is no risk of unnecessary tearing.
Note that the no-score section 11 is not an essential requirement. Since the knob piece 6 is attached to the above position, the transition portion of the tearing score 3 to the sliding edge forming score 4 is the first
It will be torn by the force in the direction of arrow 16 in the figure, and no force in the direction of arrow 15 will be applied to that part. Therefore, there is no fear that the edge of the partition plate will be torn beyond the transition portion of the tearing score 3 to the sliding edge forming score, and a stable sliding edge can be obtained.

Furthermore, according to the above embodiment, the knob piece 6 is fitted into the hollow protrusion 9 of the partition plate, and is hooked to the hook part 9a formed at the upper end of the hollow protrusion 9, so that the knob piece 6 is not attached to the partition plate. It can be fixed easily and reliably.

Here, since the hollow protrusion 9 is filled with the sphere 10, the knob piece 6 can be caulked and fixed even to a non-rigid partition plate made of a synthetic resin film. Further, according to this structure, there is no risk of problems such as material deterioration due to thermal welding or peeling during use.

(Effect of the invention) That is, according to this invention, since the knob piece is fixed to the partition plate using the filler for deforming the hollow protrusion, the knob piece can be caulked and fixed to the non-rigid synthetic resin film. The adhesion state of the pieces becomes strong,
There is no risk of it coming off during use. Furthermore, since a metal ring is used and the lower side of the metal ring is brought into contact with the partition plate, there is little risk of the partition plate lifting up when the opening is made. Furthermore, since the knob piece is attached close to the end of the score for forming a sliding incisal edge, the score for forming a sliding incisal edge and the score for tearing can be cut out at the same time by pulling up the knob piece. Further, there is no risk of tearing the edge of the partition plate beyond the transition area with the sliding edge forming score. However, according to the can of this invention, it is possible to easily and reliably obtain a predetermined opening in the partition plate.

[Brief explanation of the drawing]

FIG. 1 is a partially cut-away plan view of the lid of this embodiment of the invention, and FIG. 2 is a partially cut-away front view of the lid. 1...Can body, 2...Synthetic resin film, 3...
Score for breaking, 4...Score for forming sliding incision, 5...
...Opening, 6...Knob piece, 7...Metal ring, 8
... Annular part, 9 ... Hollow projection, 10 ... Sphere, 1
1...No score section, 12...Can lid.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A can whose mouth part is covered with a partition plate made of synthetic resin film having a score part and a knob, and (a) the score part is: It is composed of a breaking score provided in an annular shape along the peripheral edge of the can mouth and a score for forming a sliding cutting edge provided in a string shape, (b) the mounting position of the knob piece is set at the position for forming a sliding cutting edge. The opening side of the partition plate is close to the end of the score; fill with filling material,
The filler and the head of the hollow protrusion are deformed and fixed under pressure; (d) The partition plate is stretched by clamping the peripheral edge of the partition plate between a metal ring and the can body wall, and A can made by combining the above (a), (b), (c), and (d) by bringing the lower side of the ring into contact with the partition plate. 2. The can according to claim 1, wherein the lid is constituted by a synthetic resin ring that is placed on the end of the can mouth and is hooked to the can body wrapper, and a metal top plate that protects the center of the ring. 3. The can according to claim 1, which is a registered utility model, in which a narrow non-scored part is interposed between the tearing score and the sliding edge forming score.