KR20000048996A - Screw-type cap with safety and guarantee band - Google Patents

Abstract

PURPOSE: A screw-type cap with safety and guarantee band is provided in which is located at the bottler having a bottling machine of a high performance without a difficulty and can be entirely separated from a screw-lid at opening and can be remained at the state of being damaged or being connected to the screw-lid of a returnable bottle of which neck is maintained at the lower of the retaining rib. CONSTITUTION: A safety band (3) of a sealing unit (1) has two retaining noses (12a, 12b; 13a, 13b) arranged in diagonally facing pairs. The retaining noses standing out on the clear opening of the safety band are axially displaced. When the bottle (17) is closed, the pair of retaining noses (12a, 12b) is first split and then glides on the retaining rib (15). After that the retaining noses (13a, 13b) that are displaced 90 degree are split and also glide beneath the retaining rib. When the bottle is opened the retaining noses are first retained on the retaining rib and the connecting webs to the screw-type cap (2) are broken. Afterwards, the remaining webs (9) are also broken once the axially offset retaining noses are obstructed by the retaining rib.

Description

Screw stopper with safety strips {SCREW-TYPE CAP WITH SAFETY AND GUARANTEE BAND}

Today, security strips are formed on the majority of screw caps to indicate the opening of the bottle and to prevent the bottle contents from being contaminated by unauthorized persons.

The safety strip consists of a cylindrical jacket-shaped section connected via the connecting web to the lower end of the screw cap jacket.

The strip may include a weak portion around it that breaks when first opened. The strip section remains connected to the screw cap. However, it can be manufactured integrally and remains in retaining ribs axially located under the helix of the bottleneck even after the first opening.

In the conventional safety strip, multiple retaining cams disposed on the lower end or at the periphery of one of the inner surfaces and protruding in the cross-section are distributed around.

Turning the lid in a bottletler causes the retaining cam to slide into the retaining rib and the latch below it. Upon opening the screw cap the safety strip is held by a retaining cam including a connecting web between the retaining surface of the top and the screw lock and the safety strip brake.

Turning or hooking the lid of the screw cap in the bottletler causes problems due to the resistance forces simultaneously occurring at each of the four retaining cams as the cam passes through the retaining ribs, and the safety strips are produced at an angle. If it is pressurized, it may become clogged between the bottleneck and the jacket of the screw cap.

The safety strip or connecting web for locking has already been broken in the locking process and thus the safety strip loses its purpose.

The drawbacks of the type described above in a high power bottling plant cause the entire plant to stop.

The present invention relates to a screw cap having a safety strip of a bottle.

1 is a cross-sectional view of a screw cap having a safety strip at the bottom of the neck of a PET bottle.

Fig. 2 is a cross-sectional view along the line II-II between the upper end of the safety strip and the lower end of the jacket of the screw cap.

3 is a cross-sectional view taken along line II-II through the safety strip in FIG. 1 while the lid is turned.

4 is a perspective view of the closing unit according to FIGS. 1 to 3;

5 is a cross-sectional view taken along line III-III between the lower end of the jacket of the screw cap of FIG. 6 and the upper end of the safety strip.

6 is a perspective view of another embodiment of the present invention with a connected safety strip.

* Sign Description

1: closing device 2: screw stopper

3: safety strip 4: base

5: sealing rib 6: jacket

7: spiral winding 8: bottom end

9: web 10: top section

11: inner jacket surface 12a, 12b, 13a, 13b: holding cam

14: bottom 15: rib

16: bottleneck 17: bottle

18: spiral section 20: cylindrical region

22: stop position

It is an object of the present invention to place bottle without bottle in a bottle with a high power bottling machine and to be completely separated from the screw cap when the bottle is opened by the consumer and to remain in the bottleneck at the bottom of the retaining rib or to be broken with the screw cap in the returnable bottle To provide the remaining safety strips.

This object can be achieved by a security strip according to the features of claim 1. The retaining cam, located on the lid and moved axially, causes the force to develop with the safety strip lower and prevents the breakage of the strip from occurring too early.

The two retaining cams arranged in pairs and moving with each other on the shaft are locked on the screw leads and likewise the safety strip is difficult to stretch due to the elliptic deformation and slides together over the retaining ribs as necessary to allow some axial pressing force over the retaining ribs.

When the bottle is first opened, the two holding cams at the top are restrained by the retaining ribs, where a tension force occurs in the connecting web and breaks through it. The tensile force is preferably generated laterally with respect to the holding cam.

After the first connecting web is broken, the next holding cam reaches the holding rib and breaks through the adjacent connecting web. The inclined position of the safety strip is thus avoided and always located backwards from the bottom of the retaining rib in the bottleneck if formed integrally.

The safety strip, which is connected to the screw cap with the preset stop position, remains connected to the screw cap.

In FIG. 1 and FIG. 2 a closing device with screw stopper 2 and safety strip 3 is schematically shown by reference numeral 1.

The closing device 1 is made of thermoplastics and manufactured by casting. The screw plug 2 comprises a base 4 mounted with a sealing rib 5 running concentrically on the axis of symmetry A.

The base 4 is connected to a jacket 6 whose interior is conveyed to a spiral winding divided in a section. The formation of the screw plug 2 is generally known and will not be described in more detail here. The security strip 3 is connected to the bottom end 8 of the jacket 6 of a very thin web 9 which is tens of millimeters thick. The length of the connecting web 9 or the distance between the upper end 10 of the safety strip is very small and lies in the order of tens of millimeters.

In the inner jacket surface 11 of the safety strip shown as an example, two pairs of retaining cams 12a, 12b; 13a, 13b are formed.

Like the retaining cams 13a and 13b, the retaining cams 12a and 12b lie diagonally opposite and move about 90 ° and move axially, i.e., by magnitude a with respect to the axial expansion of the safety strip 3. As a result, the holding cams 12a and 12b are closer to the bottom end 14 of the safety strip 3 than the holding cams 13a and 13b by the size a.

The distance a is preferably smaller than the height b of the peripheral retaining ribs 15 on the neck 16 of the bottle 17 made from, for example, PET.

On the neck 16 of the bottle 17, a spiral section 18 protruding outward from the bottle neck 16 is visible, which is connected with a matching spiral winding 7 inside the jacket 6 of the screw cap 2. It looks like. The connecting web 9 observed in the peripheral direction is between the retaining cams 12a, 12b; 13a, 13b.

Optionally in the web 9 it is also possible to fix the screw cap 2 and the safety strip 3 to each other in a film-like connection.

The way in which the safety strip operates in the first embodiment is illustrated in FIG. 3. When the bottle 17 with the locking device 1 is locked, the locking device is seen from the top so as to be located at the bottleneck 16 from the top on the axis and rotate clockwise.

First, in the screw cap the spiral section 7 is connected with the spiral section 18 of the bottleneck. At other rotations and when the locking device 1 progresses axially, the two retaining cams 12a, 12b are pushed out on the shaft and simultaneously the two retaining cams 13a, 13b moved about 90 ° are pulled inward.

Accordingly, the safety strip 3 becomes elliptical and finely stretches within the limit elasticity.

When the two points S ₁ on the retaining cams 12a and 12b slide with each other similarly to one point S ₂ on the retaining rib 15, the two retaining cams 13a and 13b which are radially moved at this moment are held by the retaining rib 15 And the two cams 12a, 12b are pulled back radially inward because they are forced radially outward on two different ribs. Accordingly, the cross section of the safety strip 3 is again elliptical.

After a short time, the two retaining cams 13a, 13b are already slid onto the retaining rib 15, like the two retaining cams 12a, 12b, in the cylindrical region 20 of the bottleneck.

When the bottle is closed, the thin connecting web 9 is mechanically supported by the safety strip 3 with the upper end 10 under axial pressure supporting the lower end 8 of the jacket and at the same time only the connecting web 9 is pressed. Under load

When the screw cap is opened for the first time, the two retaining cams 13a, 13b, which are placed diagonally opposite, come into contact with the two retaining ribs 15 on the bottleneck 16 with each other. However, because neither the holding cams 13a, 13b nor the holding ribs 15 come into contact, the inclined surfaces are pressed apart from the two parts when they meet each other and are closed or turned. However, the holding ribs 15 do not pass through the holding cams 13a and 13b. The holding cam is fixed and the connecting web 9 on the sides of the holding cams 13a and 13b is split in two.

In other rotations, for example 1/4 or 1/2 rotation, the holding cams 12a and 12b are also supported by the holding ribs 15.

Because of the already split web 9, the safety strip 3 is again deformed into an oval shape and is thus connected under the retaining rib 15 to pull the retaining cams 12a and 12b. Thereby, the remaining connecting web 9 is split. The safety strip 3 is now left in the area 20 at the bottom of the retaining rib 15. If the safety strip 3 is not broken, the screw cap 2 can be turned in the direction of the neck 16 to close the bottle 17 again.

In the form of the invention according to FIGS. 5 and 6, the safety strip 3 in the area X is connected so as not to loosen with the jacket 6 of the screw cap 2. The remaining peripheral area of the safety strip is fixed to be broken by the thin connecting web 9 on the bottom end 10.

A pre-set cut-off stop position 22, a weak line or a film-shaped reduction in wall thickness allows the safety spring to break when the screw stopper is opened.

The first retaining cam 12a is around the preset stop position 22 at the lower end of the connection area X. It is preferable that retaining cams, which are adjacent to each other individually or in pairs, are formed in the connection region X immediately opposite. There are two other retaining cams 13a and 13b which are moved 90 ° here.

The holding cams 13a or 13a and 13b are further axially spaced from the bottom end 14 of the safety strip 3 and are thus supported by the holding ribs 15 before the holding cams 12a and 12b. Like the preset stop area 22, the side webs 9 of the retaining cams 13a and 13b are broken before the rest.

Claims (7)

The annular safety strip is connected to the jacket of the screw cap by a web and moves the retaining cams protruding from the inner surface into cross-sections, wherein the first pair of retaining cams are diagonally opposite each other and one or more other retaining cams. Is a safety screw screw cap for a bottle, characterized in that it moves about 90 ° and moves on the axis by a. 2. The security screw cap as claimed in claim 1, wherein two or more retaining cams are disposed on the safety strip and are arranged diagonally in opposite directions and move on the axis. 3. The security screw cap according to claim 1 or 2, wherein the axial movement (a) of the holding cam is smaller than the height (b) of the holding rib on the bottleneck. 4. A security screw cap according to any one of claims 1 to 3, wherein the web observed in the peripheral direction is between the holding cams. 5. A security screw cap according to any one of the preceding claims, wherein in each case two webs are between the holding cams. 6. The security screw cap according to any one of claims 1 to 5, wherein the safety strip includes a rigid body having a jacket of the screw cap, an undamaged connection area, and a preset stop position. 7. The security screw cap as claimed in claim 6, wherein one retaining cam is disposed diagonally opposite the connecting area.