CZ300392B6 - Seal for bags and other similar packages - Google Patents

Abstract

In the present invention, there is disclosed a seal made of groove-shaped flattened base body (1), which has at one of its ends a narrowing shackle (7), organized in the way that the shape and size of this shackle correspond to shape and size of a zipper tongue (8), connectable to this shackle of the base body (1) like groove and spring, enabling only frontal connection while lengthwise blocking both parts. The depth of the groove of the base body (1) is remarkably larger than the thickness of the zipper tongue (8), whereas in the base body (1) there are built-in peripheral and internal supports for this tongue (8), defining one level alignment among the tongue (8) and the shackle of the base body (1), where in this alignment the both parts are lockable by means of a third part (21) forming the seal itself, and being identically connectable both to the base body (1) and to the zipper tongue (8).

Description

Seal for sacks and similar packings

Technical field

The invention relates to a seal, in particular intended to ensure the integrity of bags, bale closures or any other packaging, using zippers or other similarly usable and reusable components,

BACKGROUND OF THE INVENTION

Sacks, packages and any other packaging reusable indefinitely for the delivery of confidential documents or any other kind of items requiring such confidentiality and the use of zippers or similar fasteners where the zippers create this reusability are already known.

In order to achieve the integrity of the consignment, commonly used seals attached to a bag or other container are already known which are capable of catching and fastening the tongue of the zipper by means of an easy-to-engage snap fastener, but unlocking inevitably results in breakage of the seal and evidence of damage to the fastener.

In this context, Spanish Patent Specification 421407 is known, disclosing a seal formed in a base body commonly attached to a bag or other used packaging and having a prismatic protrusion tightly extending through an opening operatively formed in the zipper tongue, which protrusion protrudes from the tongue and includes side an opening with access to the internal cavity, wherein a portion of the seal itself is made as an arrowhead capable of penetrating into the cavity by elastic deformation, but cannot subsequently be pulled out without breaking the parts forming the arrowhead Other examples related to the state techniques are given by the security seal shown in EP-A 0 374 539 and the locking device shown in the document ΕΡ-Α0 552 959.

SUMMARY OF THE INVENTION

The seal designed in accordance with the present invention is designed and constructed to reduce the volume of the fastener and, in particular, to achieve a better flat configuration when fastened, while at the same time providing greater operational reliability, i.e., improved sealing performance.

For this purpose, the proposed seal consists of a base body attachable to the bag or other used packaging, the base body having a longitudinal groove shape and having a tapered yoke at one end such that the yoke is adapted to the zipper tongue in shape and size, the zipper it is retained by the graduation defined by the edges of this constriction.

Side recesses are provided in the base body for abutting the tongue of the zipper so that the zipper is flush with the yoke of the base body, and corresponding longitudinal, slightly staggered and opposing bridges are provided on opposite sides of the tongue and base body, which in the joined position of the two parts. define respective axially opposed cut-outs, and to this end both the base body and the zipper tongue have some additional recesses for engaging the webs of the opposing parts.

The seal itself is intended to engage between the two parts, the base body and the zipper tongue, the seal consisting of a thin rectangular and longitudinal plate, terminated at one of its ends with two resilient protrusions flush with the wafer, wherein the resilient protrusions passage of the openings defined by the aforementioned bridges are locked into the base part, whereby the seal itself forming the tongue fastener of the zipper to the base body thus prevents the first part from detaching from the second, while not allowing the seal itself to be pulled out; without breaking these flexible projections.

According to further features of the invention, an arrangement is provided wherein a prismatic rectangular protrusion acts as a separating wedge between two resilient protrusions of the seal itself in the base body at the outlet of the cut-out defined by its bridge to ensure full integrity of the fastener.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to complete the description in this application and to better understand the features of the invention, the following explanatory description, forming an integral part of the invention, is supplemented by a set of drawings in which an explanatory and not exhaustive example is shown. seals for sacks and other containers according to the present invention, Fig. 2 shows half of the base body in side view and in longitudinal section along line A-B of Fig. 1; Fig. 3 shows a plan view of a zip tab; Fig. 4 is a side elevational and longitudinal sectional view taken along line C-D of Fig. 3; Fig. 5 is a plan view of the third and last portion forming the seal itself, in Fig. 5; Figure 6 is a side view of the part of Figure 5; Figure 7 is a perspective exploded view of the seal as a whole; The mounting assembly of FIG. 7, in the fastening position and in longitudinal section, and shown in half along the mounting assembly and in the longitudinal plane.

DETAILED DESCRIPTION OF THE INVENTION

According to the drawing, it can be seen that the seal intended for sacks and the like is comprised of a base body 1 which is clearly flat and equipped with side perforated tabs 2 for positioning it against the wall of the bag 3 or other packaging used, together with an auxiliary inner plate 4 and rivets 5 or any other positioning means passing through the openings 6 of the two parts, in particular the base body 1 has a groove-shaped shape having a taper 7 at one end of its yoke so that the yoke is adapted to the tongue 8 of the zipper. More specifically, the shoulder 9 of the base body 1 coincides with the lateral step 10 of the tongue 8 so that after engagement of the tongue 8 in the base body 1, the caliper remains locked against the longitudinal withdrawal exerted by the zip head connected to its opening přičemž. the tab 8 with respect to the base body 1, so that the zipper can be conveniently handled.

The depth of the base body 1, i.e. to the bottom 12 of its groove, is visibly greater than the thickness of the tongue 8, whereby edge supports are suitably formed to abut the tongue 8 in common plane with the yoke of the base body 1.

In addition to this construction, it protrudes from the bottom 12 of the base body 1, in a median plane defining a bridge 14 of a transversely extending rectangular slot 15, while a second bridge 16 extends from the underside of the tongue 8 defining a second slot 17; arranged so that the engagement between the two parts remains longitudinally and slightly phased, but its presence does not appreciably affect the reinforcement of the seal as a whole, since the bridge 14 of the base body 1 engages the recess 18 of the tongue 8 1.

In the coupled position, the slits 15 and 17 appear opposite each other by passing two resilient protrusions 20 therethrough, and the third portion 21 disposed thereon forms part of the seal and itself forms the seal, the seal then assuming a plate-like shape as seen. 5 and 6. These

The protrusions 20 extend resiliently over the bridge 14 of the base body prior to the elastic deformation of the protrusions 20, and their subsequent resilient restoration defines the connection of their free ends at the edge regions of the bridge 14, i.e. the lateral regions of the slot 15. The prismatic projection 22 of the noramen triangle, which, like a wedge, is embedded in the base body 1 at the bottom 12 of its groove in its central region, directly behind the bridge 14, also interacts with the original shape, so that the projection 22 pushes away the resilient projections 20 of the third part. 21, forming itself a seal, to separate them from each other during the self-engagement operation of the seal. This arrangement in all cases prevents the elastic deformation of the protrusions 20, while allowing the release of the third component 21, which itself forms the seal, in the direction of its displacement, without breaking the seal.

Finally, it remains to be noted that the third seal 21 itself constitutes a frangible component in each operating system, where a series of interconnected seals are formed by weak links forming a continuous tape, with separate uniformly arranged seals 15.

It is not the purpose of this disclosure to be more extensive, as any skilled artisan in the subject matter of the invention can understand the subject matter and the benefits thereof.

The materials, shape, size and arrangement of the individual components may be subject to variations, provided that they do not entail any change in the spirit of the invention.

All names used in the description of this application must always be understood in their own, not exhaustive, broad sense.

Claims (5)

A seal for sacks and the like, of the type intended to be used to fasten a zipper operating tongue forming a reusable means for sacks or other similar packages, characterized in that it is made of a flat, grooved-shaped base body (1) provided with a non-detachable clip (2) for said bag (3) or other packaging used, the base body (1) having at one end a yoke provided with a taper (7) arranged so that the shape and dimensions of the yoke correspond to the shape and dimension of the tongue (8) a zipper attachable to the yoke of the base body (1) in the form of a groove and tongue, allowing only a front connection with the longitudinal locking of both parts, the groove depth of the base body (1) being noticeably 40 greater than the thickness of the tongue (8) of the zipper, and in the base body (1) there are incorporated edge and inner supports for the tongue (8), defining an alignment between the tongue (8) and the yoke of the base body (1). in this arrangement, both parts are lockable by means of a third self-sealing portion (21) which is equally attachable to both the base portion (1) and the zip tab (8). Seal according to claim 1, characterized in that a bridge (14) defining a rectangular transversely extending cut-out (15) is installed in the central plane in the central body (1), and a second similar bridge is installed on the inside of the zipper tongue (8). (16) defining a second cut-out (17) which, in the coupled position, is arranged axially opposite to the first cut-out 50 (15), wherein both slits (15, 17) form a passage area for a third self-sealing portion (21), the third portion (21) having a pair of opposing resilient protrusions (20) arranged at its front end displaceable across a cut-out (15) of the base body (1), due to the elastic deformation of the protrusions (20) formed after being moved over said cut-out (15), wherein there are further A locking means for the seal itself is provided to prevent any subsequent pulling of the seal without breaking the resilient lugs. Seal according to claims 1 and 2, characterized in that a centrally-arranged protrusion (22) in the form of a prismatic isosceles triangle acting directly on the base body (1) is immediately behind the bridge (14). a wedge-like method for separating the elastic projections (20) of the third part (21) during engagement or penetration of the third part (21). Seal according to claims 1 to 3, characterized in that the bridge (14) of the base body 10 (1) is engaged with the recess (18) of the tongue (8), while the bridge (16) of the tongue (8) is engaged with the recess (19) the base body (1). Seal according to claims 1 to 4, characterized in that the third part (21), which itself forms the seal, forms part of a continuous tape, a number of these parts being joined by means of 15 easily breakable weak links for these self-assembled parts or seals.