JPH04227205A - Sack or bag - Google Patents

Abstract

PURPOSE: To relieve support force to be transmitted by adhering or fusing a bottom part to or on a leaf, sealing/connecting the leaf in/to an inside end part of a corner tuck and side tucks, and constituting so that leg-shaped strips of a grip part are adhered to or fused on the side tucks. CONSTITUTION: In a workpiece of a sack, a corner tuck 5 and side tucks 6 and 7 are partially separated from the corner tuck 5 by an obtained notch line 2 by installation of a bottom part, and a rectangular leaf 12 is placed on a square body of a bottom part, and covers an inside part 13 of the corner tuck 5 and a part of the side tucks 6 and 7, and is adhered or fused as a whole, and the bottom part is sealed. Though sideways directional leg-shaped strips 16 and 17 joined to a grip part are placed on the bottom part, since the side tucks 6 and 7 are adhered by being folded up on the leg-shaped strips, a flat tunnel passage 25 is formed between the leg-shaped strips 16 and 17 and the leaf 12, and support force is preferably transmitted to both side walls of the sack.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention has a bottom portion formed by side tucks that are rectangular in a filled state and partially overlap corner tucks, and a bottom portion that is adhered or fused to the bottom portion. The present invention relates to a sack or bag having a central web part provided with a gripping hole and a handle part with transverse leg-like strips of flexible material connected to the web part.

0002

BACKGROUND OF THE INVENTION A sack or bag of the above type is known, for example, from German Utility Model Registration No. 81 15 909 and No. 82 07 889. However, these known sacks or bags have the following disadvantages: leg strips forming the bottom leaf, which in their central region are provided with a web section provided with gripping holes. )
are entirely (or nearly entirely) glued to the bottom, so that when the sack or bag is carried, these bottoms have a longitudinal (in the region of the central plane), rather large distortions occur. This distortion means that the forces exerted by the web section
This is caused by the fact that there is significant transmission to the web portion in the area of the line extending through the center of the web.

0003

SUMMARY OF THE INVENTION The object of the invention is therefore to provide a sack or bag of the type mentioned above, the bottom of which is itself free from the supporting forces (carrying forces) transmitted via the web part with gripping holes. An object of the present invention is to provide a sack or bag configured to provide significant relief.

0004

[Means for Solving the Problems] According to the present invention for a general type of sack or bag, the above-mentioned problem is solved by the fact that the bottom part of the sack or bag is glued to a leaf in a conventional manner. or fused, the leaf being sealingly connected to the inner edge of the corner tuck and sealingly connected to at least the inner edge of the side tuck adjacent the fold line, and the handle portion is open. a sack or a sack, which is inserted into a bottom in a state, and wherein the leg-like strips of the handle portion are at least partially covered by and glued or fused to the side tucks; Solved by bags. In the sack or bag according to the invention, a transverse leg-like strip of the handle part facing the leaf, for example made of a piece of paper or a piece of foil, in the middle of which is a web part with a gripping hole. The sides of the leg-like strips (supporting the strips) are not glued to said leaves, and the side tacks are attached to the sides of the leg-like strips (on which sides the central web part with gripping holes is also arranged). The leg-like strips are overlapped and glued or fused to each other. The sack or bag of the invention is therefore characterized in that a tunnel is formed between the lower side of the handle portion and the outer side of the leaf. With this construction, the majority of the supporting force is transferred directly to the side walls of the filled sack or bag via the central web part and the leg-like strips connected to it, so that the handle Part is that the sack is damaged (
It is therefore possible to withstand considerably greater bearing forces without the bottom part peeling off from the sack.

Corner tacks are preferably formed by parallel slits in the flat tube pieces constituting the workpieces for manufacturing sacks or bags along at least part of their width. do it like this. A further feature of the invention is that one side tuck is shorter than the other side tuck, and the sack workpiece cut from the tubular web has at its open edge opposite the bottom the A retaining strip corresponding to a short length is formed.

A further feature of the invention is that the handle portion comprises a notch that is folded over itself, the leg strip being separated from its central web portion by a fold line. It is. Leg-like strips are
They can be inverted and folded onto themselves along at least part of their length. Also, some of the leg strips can be inverted and folded onto themselves to the extent that they partially overlap each other (Figure 11).
.

[0007]Furthermore, reinforcing leaves can be attached to the lower side of the leg-like strips of the handle portion, which cover at least part of both leg-like strips.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a tube section 1 cut from a tubular web of paper or thermoplastic plastic, which constitutes the basic workpiece for producing a sack. Two slits 2 are provided in the upper edge of the tube part 1. These slits 2 are arranged parallel to each other and also to the lateral folding edges 3 and approximately equidistant from them. Although the cutting edge is aligned with the lateral portion between the lateral slits 2 of the upper wall, the lower cutting edge 4 is aligned with the lateral portion between both slits 2.
, so that the lower side wall of the sack opposite the workpiece has an edge strip of the same width as this distance "a".

In FIG. 2, the workpiece of the sack of FIG. 1 is shown conventionally provided with a bottom. This bottom attachment results in corner tacks 5 and side tacks 6, 7. Side tuck 6 is side tuck 7
by the width of the edge strip 8. side tuck 6
, 7 are partially separated from the corner tack 5 by a score line (slit) 2. Later, when closing the bottom, the side tacks 6, 7 are folded over at the pre-grooved lines 9, 10.

A rectangular leaf 12 is placed on the so-called bottom square shown in FIG. 2. This leaf 12 covers the inner part 13 of the corner tack 5 and a part of the side tuck 6, 7 adjacent to the grooved fold lines 9, 10. The leaf 12 is the inner part 13 of the corner tack 5
and are entirely glued or fused to the inner regions of the side tacks 6, 7, thereby sealing the bottom.

[0011] On the bottom thus prepared (but still in an open state), the handle part, ie the central web part 15 ( Said web section 15 has transverse leg-like strips 16, 17 joined to it (together with an edge strip of width "b" forming a rectangular sheet covering the leaf 12 in the area of the corner tack 5).

In order to clarify the state of the sack shown in FIGS. 3 and 4, a more detailed explanation will be given based on FIGS. 5 and 6. As can be seen from FIG. 5, the leaf 12, in the form of a rectangular leaf, is placed on the already attached flat bottom and glued to it in the manner described above. Thereby, the leaf 12 covers the inner edges of the side tucks 6, 7. The leaf 12 also covers the inner part 13 of the corner tuck 5, the edge of which is shown in the plan view of FIGS. 5 and 6.

According to FIG. 6, the handle portion shown in FIG.
It is shown additionally mounted on the leaf 12. Once the bottom is prepared in the manner shown in Figure 4, leaf 1
The side tacks 6, 7 to which 2 are glued are folded onto the outer parts of the leg-like strips 16, 17 of the handle part at the folding lines 9, 10 on both sides of the central web part 15, and glued to the part. In this state, as can be seen from FIG.
The wide side tucks 7 extend along part of the central web section 15.

The handle portion shown in FIG. 10 consists of a central web portion 15 and adjacent leg strips 16, 17, with a reinforcing strip 20 glued to the center of the back side of the leg strips 16, 17. ing. The length of this reinforcing strip 20 is equal to the length of the handle portion. The handle part shown in FIG. 11 is designed with wider lateral strips 16, 17;
overlap each other in the area of the web portion 15 (
They are folded inward in opposite directions so that they overlap.

In the embodiment shown in FIG. 12, reinforcing strips 2 are provided in the edge strips of the leg strips 16, 17 which are folded inwardly into each other and overlap.
1 is additionally inserted. This reinforcing strip 21
is only glued on one side to the top. FIG. 14 shows an embodiment similar to FIG. 12, but in this embodiment the adhesive beam is displaced relative to the sides. In the two embodiments shown in FIGS. 12 and 14, the lower part of the handle portion forms a leaf, and a tunnel is formed between the lower part and the reinforcing leaf (reinforcing strip) 21. Therefore, there is no need to use leaves in these embodiments.

In the embodiment of FIG. 13, the leg strips are folded inverted onto the leg strips at least along part of their length. FIG. 9 shows the filled sack with handle portion. The side tacks 6, 7 are folded over and glued onto the lateral leg strips of the handle part. A flat tunnel-like passage 25 is thus formed between the leg-shaped strips 16, 17 and the leaf 12. This passageway 25 has a section adjacent to the central web section 15 that provides a tension strap (so to speak, a supporting force).
It is formed by the fact that it constitutes a strap that transmits to the side walls of the filled sack.

[0017] However, at least the upper layer of the leg-shaped strip is not fused or adhered to the parts being tacked (ie the parts overlapping each other);
It is advantageous if a tunnel-like channel is formed which preferably transmits the supporting forces to the side walls of the sack.

[Brief explanation of the drawing]

1 is a plan view of a tube section cut from a tubular web in a flat state; FIG.

2 is a plan view of the part of FIG. 1 provided with a bottom; FIG.

3 is a plan view of the bottom of FIG. 2 with leaves placed and glued onto the provided bottom square; FIG.

4 is a plan view similar to FIG. 3 showing the handle portion placed on the leaf; FIG.

5 is a cross-sectional view of the sack workpiece along line V-V in FIG. 3; FIG.

6 is a sectional view of the sack workpiece along line VI-VI in FIG. 4; FIG.

FIG. 7 is a plan view of a flat sack with a web portion of the handle portion forming a right angle to the bottom;

8 is a cross-sectional view of the sack taken along line VIII-VIII in FIG. 7. FIG.

FIG. 9 is a perspective view of the bottom of a filled sack.

FIG. 10 is a sectional view showing a handle portion.

FIG. 11 is a sectional view showing a handle portion of another embodiment.

12 is a sectional view of a handle part similar to that of FIG. 11, with reinforcing leaves inserted at the overlap of the inwardly folded edge strips of the lateral leg strips of the handle part; FIG. .

FIG. 13 is a cross-sectional view of the handle portion in which the leg-shaped strips are inverted and folded along their length;

FIG. 14 is a sectional view showing an embodiment in which the handle portion of FIG. 12 is modified.

[Explanation of symbols]

1 Tube section 2 Slit (score line) 3 Lateral folded edge 4 Lower cutting line 5 Corner tacks 6, 7 Side tacks 8 Edge strips 9, 10 Pre-grooved line (grooved fold line) 12
Leaf 13 Inner part of corner tack 15 Center web part

Claims (8)

[Claims] Claim 1: A bottom part formed by side tucks that are rectangular in a filled state and partially overlap the corner tucks, and a gripping hole that is glued or fused to the bottom part. A sack or bag having a central web portion and a handle portion having transverse leg-like strips of flexible material connected to the web portion, the sack or bag having said The bottom part is glued or fused in a conventional manner to a leaf (12), which leaf (12) is sealingly connected to the inner edge of the corner tack (5) and at the fold line (9, 10).
are sealingly connected to at least the inner edges of the side tacks (6, 7) adjacent to the handle portions (15, 16, 1
7) is inserted into the bottom in the open position, and the leg-like strips (16) of the handle parts (15, 16, 17)
, 17) is at least partially covered by the side tucks (6, 7), and the side tucks (6, 7)
A sack or bag characterized by being glued or fused to. 2. The corner tacks (5) are formed along at least part of their width by parallel slits (2) in the flat tube pieces (1). 1. The sack or bag according to 1. 3. One side tuck (6) is shorter than the other side tuck (7), and the sack workpiece cut from the tubular web has an open edge opposite to the bottom. Sack or bag according to claim 1 or 2, characterized in that a retaining strip (8) corresponding to said short length is formed at. 4. The handle part comprises a notch which is folded over itself and extends from its central web part (15) to the leg-like strips (16, 17).
A sack or bag according to any one of claims 1 to 3, characterized in that the bags are separated by a fold line. 5. Claims 1 to 4, characterized in that the leg-shaped strips (16, 17) are folded inverted onto themselves along at least part of their length. The sack or bag according to any one of the above. 6. Parts of the leg-shaped strips (16, 17) are folded inverted onto themselves in such a way that they partially overlap each other. sack or bag. 7. Parts of the leg-shaped strips (16, 17) are folded inverted onto themselves and partially overlap each other and cover the inserted reinforcing strips. 7. The sack or bag according to claim 6. 8. The lateral leg-like strips (16, 17) of the handle portion (15, 16, 17) are connected to the inner edges of the side tucks (6, 7) and the corner tucks (5). 8. The sack and bag according to claim 7, wherein the sack and bag form a leaf.