JPH03176361A - Bag shaped container cutting/opening device - Google Patents

Abstract

PURPOSE: To beautifully unseal an envelope by holding cutouts or slits extending through both walls of a pocket only at each end, and defining a boundary of a separable part having a return to store an opening thread. CONSTITUTION: An unsealing device is arranged in the middle of an overall length or along the overall length of a return of an envelope 4, and comprises an opening thread 2 not projected from an end part of the return. The opening thread 2 is fixed by either adhering means. The opening thread 2 is stored in the return of a closing lid 3, or in the return of other sides by either adhering means. At least two cut opening parts 1 are provided in both walls of the envelope to enable access to an unsealing position 2, and to remove a detachable part to beautifully open the envelope 4. The cut opening parts 1 may be inside the envelope body or in the closing lid 3. Thus, the cut opening parts define the boundary of the detachable part in a paper where the opening thread 2 is stored.

Description

Detailed Description of the Invention a. Industrial Field of Application The present invention relates to flat bag-like containers, such as envelopes or bags, which enable the bag-like container to be easily opened and its contents to be safely taken out. This invention relates to a device for easily incising.

b. Prior Art Flat bag-like containers such as envelopes and bags are usually closed on three sides and can be folded back on the fourth side and fixed, e.g. Contains a polygonal pocket with a closing lid.

For many years, pockets or envelopes of this configuration were cut open using tools such as paper knives, and cutting open mail items in this manner was a relatively time-consuming task, since cutting open the envelope This is because it depends on the dexterity of the person concerned and the difficulty of inserting the tip of the paper knife under the envelope lid. More importantly, it is not uncommon for people to tear open envelopes or even tear the contents out of frustration.

In an attempt to facilitate the opening of such bag-like containers, particularly mailing envelopes, some manufacturers have created
The cutting thread extends along the entire length of this lid into the two sides, especially the closed lid, and projects outwardly, in this way it is possible to grasp and pull a portion of the thread to incise the envelope. I tried to make it possible. In such an attempt, this device
This has been shown to be unsuitable as the traction force is applied over the entire length of the thread, usually crushing the top of the envelope and frequently cutting it unintentionally.

Then, rather than pulling on one end of the thread, the center of the thread is pulled.2 In this way, the two thread halves corresponding to either side in the area where the traction force is applied simultaneously incise the two halves of the envelope. It was considered that

The problem in this case is to grasp the thread that is trapped within the flap of the envelope. One proposal is to provide a semicircular cutout in the center of the fold and near the location of the thread, which allows the thread to be gripped from the outside. This solution was not technically or commercially successful for the following reasons.

Post Office regulations require that the contents of the mail item must not be damaged and that no third party should be able to touch or gain knowledge of any part of the envelope contents. It won't happen. However, the semicircular cutout allows clear access to the envelope contents at least partially, especially if the two sides of the envelope are separated.

Semicircular cutouts cannot be used for envelopes that do not require adhesive wetting, since the area of the semicircular cutout facilitates glue runoff. Obviously, this is undesirable for both manufacturers and users. Manufacturers currently prefer synthetic threads over cotton threads, and synthetic threads are extruded into the flap of the envelope near the flap edge. Such extrusion cannot be carried out in the presence of cutouts, since the cutouts create relatively significant discontinuities in the support.

Other proposals involve replacing semicircular cutouts with cutouts in paper for administrative purposes or with a series of holes used for tickets. This device was also not adopted by manufacturers and users because, no matter the size of the holes, these series of holes made it possible to cleanly separate the separable part containing the thread. Because they don't.

Tests have shown that it is practically impossible to apply sufficient traction to a small amount of material with or without a nail, even if this small amount of material has been previously perforated. More importantly, the force applied to separate the portion of paper held by the thread may tear the envelope somewhere other than the desired separable area. That's true.

The user therefore runs the risk of tearing or crushing at least a portion of the contents of the envelope.

C1 Problem to be Solved by the Invention Accordingly, a new method of gripping the thread is proposed, which makes it possible to cleanly remove the separable part that houses the cutting system, and thus to cleanly cut the envelope. need to find out.

d. Means for solving the problem The present invention makes it obvious that even to a person skilled in the art the use is obvious (judging by the decades that this problem has existed and the number of unsuccessful attempts in the past). In the present invention, it is possible to realize this objectively effective means in which the cutting thread is accommodated in the central plane of the envelope, in other words at a position substantially equidistant from the two adjacent sides. at least two aligned cutouts are provided in a plane substantially parallel to the edge at right angles to the edge. These cutouts or slits extending through both walls of the pocket-foot delimit a separable portion that is held by only the ends and has a turn-up to accommodate the cutting thread. This embodiment facilitates simultaneous gripping of the separable part and the thread that this part accommodates, thus making it possible to apply a traction force to these combinations to immediately sever the paper part. This makes it possible to freely grasp the incision thread.

e. Examples Next, the present invention will be explained in detail based on examples using figures. The lancing device according to the invention will be described in relation to a conventional envelope.

The cutting device consists of a cutting thread 2 which is arranged in and along the entire length of the flap of the envelope 4 and does not protrude from the end of the flap. The cutting thread 2 is fixed by any adhesive means. The cutting thread 2 is housed in the folds of the closed M3 or in the folds on any other side of the envelope 4.

In order to allow access to the incision location 2 and the envelope 4
At least two cut openings l are provided in both walls of the envelope in order to make it possible to apply the necessary traction force to remove the separable part in order to cleanly open the envelope. These force openings l may be located in the envelope body and in the closure lid 3, as shown in FIG.

A force opening passes through each wall on the side containing the cutting thread, is located as close as possible to the edge, and lies in a plane substantially parallel to the side edge.

The cut opening thus delimits a separable portion of the paper in which the cutting thread 2 is accommodated.

When the envelope is closed, the cutting thread 2 is trapped in the flap and over the cut opening). To open the envelope (see FIG. 1), the user grasps the separable portion that is substantially equidistant from two sides that are perpendicular and adjacent to each other and removes this separable portion. Apply a slight traction force.

The cutting device according to the invention is particularly suitable for use for opening postal envelopes, however polygonal pockets having at least one folded closure lid which can be cut open and which are secured to the corresponding outer part of the pocket. It may also be used in any other flat bag-like container made of flexible material of any shape, including containers in the shape of. The incision thread is on the open lid side,
Or it may be housed in any other side of the pocket.

This device is the only one that is able to cut open pocket sheets cleanly and without any hindrance, especially when opening mail items, without the risk of arbitrary tearing, damage to the contents, or hesitation that results in wasted time.

[Brief explanation of drawings]

1 shows a schematic view of a closed envelope provided with a cutting device according to the invention, and FIG. 2 shows a schematic view of the envelope of FIG. 1 when opened. l...Cut opening, 2...Incision thread, 3...
・Close the lid, 4...Envelope.

Claims (1)

[Claims] 1) at least one member fixed to the outer portion of the pocket;
A flat bag-like container made of a flexible material that can be torn, such as an envelope or a bag, of the type comprising a container in the form of said polygonal pocket with two flap closures, the cutting thread being accommodated in said flaps. and extending the entire length of one side of the pocket, the pocket being disposed at right angles to two other edges along which the cutting thread is disposed, and extending substantially equidistantly from these two edges. a weakened region formed by at least two aligned cut openings through each wall of the pocket in spaced apart edges, the cut openings extending as far as possible into the edges of the pocket; A pouch-like container, characterized in that it forms a severable region which is arranged in close proximity in a plane substantially parallel to said edges, and in this way the cutting thread is gripped. 2) the cutting thread is housed within the fold and extends along the entire length of the closure lid, and the weakened region is located on a side with the closure lid and perpendicular to the weakened region; The bag-shaped container according to claim 1, wherein the bag-shaped container is arranged at substantially equal intervals from two adjacent sides of the container.