JPH05201454A - Clip to close folded end of flexible bag - Google Patents

Abstract

PURPOSE: To obtain a clip that can hold a bag firmly without sudden slip-off by forming a pressure tab in the center of a widened relief opening, and providing sharp facing pressure points with hooks on both sides of this pressure tab. CONSTITUTION: This clip 30 has a flat body 32 preferably having a pair of central pressure tabs, and each pressure tab is formed in the center of a widened relief opening 36. The relief opening 36 is symmetrical and is connected with a narrow pinching channel on both sides of the pressure tab 34. The pressure tab 34 has sharp facing pressure points having a hook part 42 on one side of it. The pressure point 40 and the hook part 42 form a part of the bag folding line opening 44, and the center of this opening 44 is dislocated from the pressure point 40. A folded end of the bag is inserted under the pressure tab 34, and the end of the bag is pinched and held by engagement of the pressure point 20 on both sides of the pressure tab 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag closure clip of the type that holds a folded end of a bag to keep the bag closed.

[0002]

BACKGROUND OF THE INVENTION Traditionally, plastic bag closure clips have generally been attached around the twisted or jumbled neck of the bag to keep it closed. Another type of clip was to hold the bag closed by pinching the edges of a flat-fitted or folded bag. A typical closure of this type is described in US Pat.
No. Another closure that holds the folded end of the bag closed is in the form of large clothespins that use the clamping pressure of a spring to close the bag.

These spring-closure closures are expensive to manufacture and bulky.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a clip for closing the folded end of a bag which is inexpensive to manufacture. Another object of the invention is to clamp the folded ends of the bag at sharply spaced spaced pressure points provided in a narrow nipping channel and to grip the bag securely without accidental slipping, thereby The purpose is to provide a plastic closure for closing the folded end.

Basically, this object is achieved by providing a clip having a flat plastic body with a central pressure tab. The pressure tabs terminate at the opposite ends as sharp pressure points adjacent the narrow pinching channels. These pressure points press the folded end of the bag firmly against the opposite side of the channel, while exerting a strong gripping pressure on the bag. The area above the pinch point is preferably depressurized as a fold receiving opening that is centered inward from the pressure point. In addition, the pinch channel is widened under the pressure tab to retain the bag material and allow the bag material to move under the pressure tab without applying excessive bending pressure to the pressure tab. It is preferably connected to the relief opening.

With the clip of this construction, sharp pressure points are provided in the narrow, confined pinching channel on the opposite side of the pressure tab. The relief opening then relieves the pressure on the pressure tab, so that the clamping pressure rises at the pressure point. This causes the folded end of the bag to bend sharply at the pressure point so that the pressure point engages the material approximately perpendicular to the surface of the material. This exerts a firm gripping pressure so that the folded end of the bag is less likely to slip out of the clip.

The clip may have a single pressure tab, but preferably has multiple pressure tabs to increase the number of pressure points that engage the material at the folded end of the bag. .. There may be opposing pressure points in each sandwich channel.

[0008]

DETAILED DESCRIPTION OF THE INVENTION As best shown in FIG.
Has a flat body 12 with a central pressure tab 14. The pressure tab 14 is formed in the center of the widened relief opening 16. The relief openings are symmetrical and have a narrow pinching channel (pinching) on either side of the pressure tab.
channel) 18.

The pressure tab further has sharp facing pressure points 20 with hook portions 22 on one side.
The pressure points and hook portions form part of the bag fold opening 24. The center of the bag fold opening is offset inward from the pressure point. Since the pressure points, hook portions and openings are symmetrical in the clip, only one side will be described.
It can be seen that the folded end of the bag is inserted under the pressure tab and is engaged by the pressure points 20 in the clamping channels on either side of the pressure tab.

FIG. 1 shows a clip having a flat body 32, a pair of pressure tabs 34 each having a central relief opening 36 leading to a nipping channel 38. The central tab has a pair of sharp pressure points 40, each pressure point 40 having an adjacent hook portion 42 that partially defines a fold opening 44. The center of the crease opening is
Inward from the pressure point. In this embodiment, the pressure tabs, pressure points, pinch channels, and relief openings are
It is repeatedly provided in the second position of the body 32, so that it acts as four pressure points 40, 40a, 40b and 40c. When four pressure points are used, the clamping force is synergistically improved as compared with the case where there are only two pressure points, and the four points which are combined are the clamping points of a single pressure tab as shown in FIG. Provides a total clamping action that is more than double the force.

FIG. 2 shows what the folded end FE of bag B is under pressure tab 34. The width w shown in FIG. 5 must be, for example, substantially effective, and must also be approximately equal to or wider than the width t shown in FIG. These substantially effective widths give the pressure tab and the plastic material around the pressure tab considerable rigidity. This rigidity is achieved by the pressure tab 34 as the folded end of the bag slides under the tab.
Is very resistant to outward bending. In addition, the crease opening 24 relieves pressure on the tab created by the thickness of the fold, again ensuring that the tab does not deviate significantly from the plane of the body 12.
The large relief opening 36 at the bottom of the tab also provides enough opening to allow the bag to flex and exit the bottom of the tab, so again there is too much bending pressure to flex the tab outward. It does not affect

In contrast to these large relief openings, the pressure points exert their pressure in a very narrow channel 18. This allows the pressure points to exert a considerable pressure substantially perpendicular to the face of the folded end of the bag material. The fact that these forces are applied at approximately right angles causes the pressure points to be tightly clamped and the clip to be clipped to the bag.

The center of the fold opening is offset inward from the pressure point to allow the bag material to be drawn into the opening and again the amount of pressure to push the rigid pressure tab away from the plane of the body. Lower. FIG. 6 shows an embodiment in which two sets of pressure points 60 and 61 are provided on each sandwich channel 68.

While the preferred embodiments of the invention have been illustrated and described, it will be obvious to those skilled in the art that the modifications are obvious. Therefore, the present invention is not limited to the specific embodiments shown in the drawings.

[Brief description of drawings]

FIG. 1 is a front view of a clip for closing the folded end of a bag.

2 is a cross-sectional view of the clip taken along line 2-2 of FIG.

FIG. 3 is an enlarged perspective view of a part of the clip shown in FIG.

4 is a partial cross-sectional view taken along line 4-4 of FIG.

FIG. 5 is a front view of a clip having a single pressure tab.

FIG. 6 is a diagram showing another embodiment of the present invention.

[Explanation of symbols]

10 ... Clip 12, 32 ... Flat body 14, 34 ... Pressure tab 16, 36 ... Relief opening 18, 38, 68 ... Nip channel 20, 40, 40a, 40b, 40c, 60, 61 ... Pressure point 22, 42 ... Hook part 24, 44 ... Fold opening FE ... Folded end of bag B ... Bag

Claims (4)

[Claims] 1. A plastic body having a central pressure tab in a widened relief opening, and the tab for applying pressure at transversely spaced positions on opposite sides of the pressure tab. And a means for maintaining the folded end of a flexible bag provided with the means for applying the pressure to the narrowed channel. Including sharp pointed pressure points, wherein the folded end of the bag is gripped at two points on opposite sides of the tab within the narrowed channel; The narrowest width in the area facing the pressure point, to give a relief area to receive,
A wider area adjacent the pressure point and beyond the pressure point towards the free end of the pressure tab; the means for exerting pressure is a bag spaced above the pressure point. Clip comprising a fold receiving opening; said bag fold receiving opening forming a hook surface, said hook surface facing upwards and ending at said sharp pressure point located above said hook surface. .. 2. The flat plastic body has a front surface and a back surface and, in the undeflected state, has a front surface and a back surface, respectively, which are in a single plane; 2. In its absence, the pressure points are uniformly flat over their width from one pressure point to another so that the pressure points are flush with the rest of the plastic body. Clip of. 3. The pressure point and the sandwiching channel are respectively
The clip according to claim 1, wherein the clip is laterally offset from a center line of adjacent bag fold openings. 4. Means provided on the second central pressure tab and a second central pressure tab for applying pressure at transversely spaced positions on opposite sides of the second pressure tab. The means for exerting pressure includes a pressure point directed outward toward the narrowed pinching channel, wherein the folded end of the bag is the first and the second. The clip of claim 1, wherein the clip is gripped at four points, two sets of points on opposite sides of each second pressure tab.