SK14562000A3 - An envelope with lateral folds - Google Patents

Abstract

The envelope is formed from one section (1) and has a front wall (2), a rear wall (4) which is connected to the base, a closure flap (3) and two side flaps (5). The side flaps each have a fold having two side edges (7a,8a) from which one forms the rear wall and the other the front wall. Both side edges of at least one side flap are located are offset with respect to one another.

Description

Technical field

The present invention relates to a rectangular side fold envelope comprising a front wall to which a bottom flap, also referred to as a back wall, is attached by a bottom fold, a closing flap adjoining the front wall, and two side flaps each forming a double fold with two side edges, one of which forms the side edge of the rear wall and the other side edge of the front wall, the front wall and the rear wall being flat, ie The empty state of the envelopes are substantially planar and parallel to the plane of the envelope.

Each double lateral fold of the envelope has an inverted bend groove formed between the two lateral edges, which is located between the front wall and the rear wall in the flat state of the envelope. Each side double fold further comprises two portions, one of which joins the side edge with the bend groove in the reverse direction and faces outwardly from the bend groove in the reverse direction in the flat state of the envelope.

The envelope with the side folds is particularly suitable for relatively bulky cartridges such as multi-leaflet brochures and documents, so that

to send such as prospectuses. which can contain up to 100 parties. present stav technky U.S. Pat. 3.198 420 And envelopes are known with side the folds they have one of both side grooves

··································································· · Breaks at each lateral fold, supplemented by one additional break line.

The envelopes known from European patent specification no. 0 522 383 A are provided with two double side folds and, in addition, when folding at the bottom of the envelope, they have a bottom part which is connected to the front wall and / or to the front wall by means of one fold line. with rear wall.

In British patent specification no. 1 003 716 And the disclosed envelope is provided with two lateral double folds and one lower fold at the bottom of the envelope with three fold lines. In the flat state of the envelope, the middle fold line of the lower fold is located at the lowest point of the envelope, forming the lower edge of the envelope. The other two folds of the bottom fold fold the adjacent portions of the bottom fold into the middle fold line with the front wall, respectively. back cover.

Mechanical envelopes with side folds are very often filled with various filling devices known for this purpose. Known mechanical filling processes have envelopes filled at one of the side edges grasped by the feeder and thereby moved on the filling path.

If the envelope formed according to one of the three cited patents is to be filled mechanically, there is a problem that the feeder grips the caught edge of the envelope so that the lateral fold cannot be opened. Other known mechanical filling methods have the feeder temporarily open during the filling process, and often do not collapse when the envelope is very filled. Thus, with known envelopes, mechanical loading causes failures or that the side-fold envelopes cannot be completely filled.

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SUMMARY OF THE INVENTION

These drawbacks of the known side-folded envelopes in mechanical filling are overcome by the envelope of the invention, in which the two lateral edges of the at least one curved side flap are aligned parallel to the plane of the envelope and offset by at least 3 mm. When viewed from above the plane of the unfilled envelope, the sections adjacent to the side edge of the envelope form opposing sections for catching the envelope by the feeder, which are located outside the remainder of the envelope, respectively. outside the second side edge of the envelope. In the flat state of the envelope, the two opposing enveloping portions are located approximately in one plane parallel to the plane of the envelope and for the most part abutting one another.

Instead, optionally, additionally, the envelope according to the invention may be provided with a pair of fold lines parallel to the lower edge of the envelope at the location of the lower fold, at least on one side thereof. The lower edge of the envelope may then be offset by at least 3 mm in the plane parallel to the plane of the envelope relative to the nearest lower fold line or the outer edge of the envelope. pairs, bottom grooves up. Thus, between the lower edge and the closest groove that is located, respectively. an envelope-catching section for each feeder, which in this case also forms two opposing parts. On each side of the lower edge there is always one pair of lower fold lines. Thus, the lower fold and the envelope catching section are symmetrical with respect to the plane passing through the lower edge of the envelope. The opposing portions of the envelope-engaging section at the bottom fold are in the flat state of the envelope when viewed from above are outside the other portions of the envelope, are almost parallel to each other, and for the most part abut each other.

The envelope according to the invention thus has at least one side on one side of the envelope. And / or two sections opposite each other at the bottom of the envelope, which, when viewed from the top in the flat state of the envelope, are located outside the other parts of the envelope . In mechanical loading of the envelope, the opposing envelope grasping portions can be tightly gripped by the feeder of the feeder without causing the side double fold to wrinkle or crease or pull the front wall away from the back wall of the envelope to prevent mechanical loading.

Preferred exemplary embodiments of an envelope according to the invention are set forth in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is further elucidated by way of example embodiments shown in the drawings. Here means:

Fig. 1 is an outline for making an envelope with side folds,

Fig. 2 is a view of the back of the envelope, with the back wall partially open and partially folded;

3 is a view in the direction of the arrow III of FIG. 2 on an enlarged scale,

Fig. 4 is a rear view of another embodiment of the envelope with side folds, showing partially folded back and partly open back wall;

Fig. 5 is a cross-sectional view of the envelope with the side folds in the plane V-V shown in FIG. 4, on an enlarged scale

6 is a simplified view of the envelope with the side folds in the direction of the arrow VI of FIG. 4, to the same scale as FIG. 5, wherein the envelopes shown in FIG. 3, 5 and 6 represent the state when the lateral double side of the side is double. * The folds are only slightly folded, thus creating a free space between the front wall and the back wall of the envelope.

DETAILED DESCRIPTION OF THE INVENTION

For making the envelope with the side folds, the cut 11 shown in the following parts, side and / or front in FIG. 1, which is folded On one longitudinal edge of the front, the closing walls 2 of the flap 2 are attached. The other longitudinal edge is followed by a lower flap, which forms the bottom bend and for the most part the back wall, which can also be called the back of the envelope. On each of the narrower sides of the front wall 2 the side flaps 6 are connected. As shown in FIG. 2 and 3, the envelope 4 formed according to the slit 1, has side flaps 6 glued to the inner side of the rear wall. Thus, it is prevented from the envelope filling opening formed on one side by the front wall 2 and the closing flap 2 and on the other. the free edge 4a of the rear wall 4 * does not protrude any parts that could damage the cartridge when the cartridge is inserted into the envelope.

In order to be able to make the envelope 1 into the envelope 1, individual steps are necessary, in particular the formation of the fold lines, also referred to as the pre-fold line, the application of the adhesive layer and the gluing of the flaps along the fold lines.

In order to form the side folds according to the invention, four fold lines are required on each side of the envelope, which are arranged at approximately equal distances to one another, namely:

side fold lines Z and S »which in the folded state form the side edge 7a of the front wall 2 / respectively. side edge 8a of back wall 4 envelopes £, ···················

- bend grooves 2 for inverted bending, which together with the bend grooves Z and S serve to form side double folds, so that the side flaps are folded first around the groove grooves 7 inwards, then bent around the bend grooves 2 the outward bend, and finally the fold lines S are bent back inwards,

- break lines 10. located between the two lateral break lines Z and £ ·

To make the envelope shown in FIG. 2 and 3, five more break lines are needed, namely:

- a lower fold line 11 which defines the front wall 2 of the envelope 6 from the rear wall 6 and, at the same time as the defining region of the front wall 2 and the rear wall 4, forms a lower bend,

- fold lines 12 and 13 which run parallel and equidistant from the fold lines 11, which are both intended to form the bottom bend of the bottom of the envelope and which together with the folded side flaps & form the envelope pocket >

- fold lines 14 and 15, which serve to fold the closing flap 2 ·

In the next step of the process, the adhesive layer 16 is applied. The envelope according to the invention can be additionally modified so that it can be provided with a self-adhesive closure on which the adhesive layer is covered with protective tape.

Then, the slit 1 is folded according to the grooves shown in FIG. 2a to a conventional size, for example a size from A5 to A4, and a larger size envelope can also be formed. At the same time, starting from the notch 1, firstly, they are initially 9 e and are 9 e. The folded side flaps S are such that each of the two side flaps 5 &apos; forms a double fold. The lateral grooves of the fold 7 and then form the lateral edges. the lateral edges 8a of the rear wall 4 substantially define each other the plane of the envelope. Side edges 7a. flat, i.e. Unfilled envelope.

and 8a are at least equally parallel to each other.

In the same side fold, however, the lateral edge Za, compared to the lateral edge 8a located here, is largely offset so that when viewed from above the plane of the envelope, the lateral edge 7a is located outside the lateral edge Sa. Finally, the rear wall is as shown in FIG. 2, bent outwards near the bottom fold, thereby forming a common section here with the side edge 7a. The offset of the side edge 7a relative to the side edge 8a in the plane of the envelope is shown in FIG. 3. This flat offset, i. the unfilled state of the envelope is from approximately 10 with the flat state of the envelope to the lateral edge 8a and / or up to 10 mm. The fold line is located only slightly outward from the side edge 8a approximately as seen from the top of the envelope plane.

Each lateral double fold of the envelope is formed on the one hand by the fold portion 17 located between the side edge 7a and the fold line S, and on the other hand by the fold portion 18 located between the fold line S and the side edge 8a. The respective portions of the fold portion 17 and the front wall 2, seen from above in the plane of the envelope outside the side edge Sa, form opposing portions 31 and 32 for receiving the envelope. In this case, the inner edge of the envelope catching section is approximately or exactly at the fold line 10.

In the flat state of the envelope, the envelope grasping portions 31 and 32 are approximately parallel and nearly adjacent to each other. Thus, when the envelope is subsequently filled, the envelope catching portions 21 and 32 may be at least one lateral fold. · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Tightly gripped, for example, by the feeder of the filling device.

After folding the side flaps &lt; &apos; &gt;, the front wall 4 is folded about the fold line 11 inwardly and glued to the curved side flaps on the sides.

The distances between the folds of the folds 12 and 13 and the folds of the folds 14 and 15 at the envelope closing point are equally large and correspond essentially to the distances between the folds of the folds 10 and S of the side flaps. 20 mm.

In FIG. 4, the plan view 101, partially unfolded, serves to produce an envelope 106, partly shown in FIG. 4 and FIG. 5. The cut 101 is composed of a plurality of parts, namely a rectangular front and a front, respectively. the front wall 102, the closure flap 103 further from the bottom flap, constituting for the most part the rear wall 104 and the two side flaps 105. All these parts serve to make the envelope 106 with side folds. FIG. 4 and 5 it is further evident that the envelope shown in FIG. 4 shows the envelope in a flat, i. an unfilled state whose front wall 102 and rear wall 104 abut each other. In contrast, in the envelope shown in FIG. 5 and 6, the front wall 102 is separated from the rear wall 104 by an interspace so that the envelope can be used for filling. In FIG. 5, the closure flap 103 is shown with solid lines in the open position and, on the other hand, dashed in a position where the closure flap 103 is folded.

The envelope 106 is, like the envelope 6, provided with a plurality of fold lines which, in a planar not yet folded notch 101, represent preliminary bending lines. On either narrower side of the front wall 102, three lateral fold lines 107, 108, 109 are formed, which are at a certain distance in the not-folded notch 101 and are parallel to each other. The lateral grooves 107a form the side edges 107a of the front wall 102 in the finished envelope while the lateral grooves are folded in the finished envelope. 108 form the lateral edges 108a of the rear wall 104. If the envelope is empty, and its front wall 102 and the rear wall 104 at least partially abut one another, the regions located between the fold lines 107, 108 are folded inwardly so that the fold lines 109 located between the fold lines 107 and 108, respectively. between the lateral edges 107a and 108a thus creating fold lines in the reverse direction. The fold lines 107, 108 and 109, and / or the boundary portions therebetween, form side folds of the envelope, which are equally formed as the side folds, with a central, inwardly folded portion.

At the bottom, at the bottom of the envelope, the longitudinal edge of the front wall 102 and its passage to the rear wall 104, there are five lower fold lines 111, 112, 113, 114 and 115, which are flat, i. in the unfilled state, the envelopes are spaced apart, parallel to each other, and together with the sections located between them and / or the sections bounded therebetween, form the bottom fold of the envelope.

The bottom fold line 111 in the finished envelope 106 is located in the middle of the bottom fold, at its lowest point, thereby forming the bottom edge 11a of the envelope 106. The two bottom fold lines 112, 113 are located on one side of the bottom fold line 111, respectively. between the lower edge 11a and the front wall 102, thereby forming a first side fold of the lower fold. On the other hand, the two fold lines 114, 115 are on the other side of the fold lines 111 and 115 respectively. between the lower edge 11a and the rear wall 104, thereby forming a second side fold of the lower fold. The lower grooves of the fold 113, 115 are arranged symmetrically to each other relative to the center plane of the envelope 106 extending through the lower edge 111a. The bottom of the envelope 106, or even the lower fold, is composed of two parts 127 e ·· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · And 128. which are located on opposite sides of the fold line 111. and &lt; RTI ID = 0.0 &gt; respectively. &Lt; / RTI &gt; on opposite sides by the lower edge 111a formed by it. and which follow the fold lines of the 113th, respectively. 115. and with respect to the aforementioned plane of symmetry, they are symmetrical to each other. If the envelope is unfilled, as shown in FIG. 4, there are sections between the fold line 111 and 110 respectively. the bottom edge 111a and the fold lines 113, 115. longitudinal edges 113a. 115a is substantially flat and parallel to one another. Conversely, in the filled state, the lower edge 111a is offset by a distance dz relative to the lower grooves of the fold 112, 114 that form the lower double fold, as shown in FIG. 5, wherein the offset should at least in the flat state of the envelope correspond to di. The sections formed by the lower fold lines 111, 112 and between the fold lines 111, 114 of the envelope form the sections 131, respectively. 132 for catching the envelope, there may be a gripping of the feeder of the filling device (not shown here), by means of which the envelope is caught. If the front wall 102 and the rear wall 104 are spaced apart, the bottom portions of the envelope that follow the fold lines 112 and 114 are directed outwardly to the fold lines 113, 115, respectively. a longitudinal edge 113a. 115a.

For joining the top longitudinal edge of the front wall

102 with a closing flap 103 at least two, for example three fold lines 121, 122, 123 are formed, which are equally parallel to one another and arranged at certain intervals when planarly cut. Closing flap

103 is provided with an adhesive layer 125.

The distances of the lower fold lines 115 and 115 from the lower fold line 111 are equally large and are at least 3 mm, but at most 10 mm, in particular 5 mm. The distances of the lateral grooves 107, 108, and the groove 109, the distances of the lower grooves, 113, 115, from the grooves, 112, respectively. 114 and the distances of the top grooves 121, 123 from the grooves 122 are approximately, or exactly the same, and are ······················· Depending on the required maximum distance of the front wall 102 from the rear wall 104 at least 5 mm, but not more than 15 mm, in particular approximately 10 mm.

The envelope 106 may be formed and fabricated in the same way or similar to the envelope 8 shown in FIG. First

The envelope with the side folds can be made in several kinds. For example, it is possible to combine the features of the two envelopes 8, 106 to form an envelope having the same side double folds as the envelope 8 and the same bottom fold as the envelope 106. The envelope described above may be caught by the feeder on one of the machines. double folds, while the envelope 106 shown in FIG. 4 to 6, the feeder can catch at the bottom fold. In the type of envelope just described with some common envelope features 8 and 106, the feeder can grab the envelope at any one of at least one of the side folds and / or at the bottom fold location.

With the envelope described in FIG. 1 to 4, which is intended to be grasped by a feeder on one of the side folds, the three lower fold lines 11, 12, 13 may be replaced by one fold line located at the bottom of the envelope.

In order to eventually grab the envelope by the feeder at the bottom fold, an envelope having an asymmetric bottom formed in the transverse cross-section and having only one pair of fold lines on only one side of the bottom edge.

Thus, for example, 111a may merge with and / or directly form the gravel. Between the lower and rear walls 104 are then formed two fold lines corresponding to the fold lines 114. 115. The lower edge can also be formed as the lower edge 115a. while then

The lower edge of the edge 113a of the edge 111a between the lower edge and the front wall 102 is provided with two fold lines corresponding to the fold lines 112, 113.

Claims (5)

PATENT CLAIMS An envelope with side folds, made of a notch (101, 101), which consists of a front wall (2, 102) and with it, by means of a bottom fold, a connected rear wall (4, 104), further on the front wall (2, 102) of the adjacent closing flap (3, 103) and the two side flaps (5, 105), wherein the side flaps (5, 105) form a double side fold with two side edges (7a, 8a, 107a, 108a), which form both the side edge of the rear wall (4, 104) and the side edge of the front wall (2). , 102), wherein the front wall (2, 102) and the rear wall (4, 104) of the blank, flat envelope are substantially flush to define the plane of the envelope, characterized in that the flat envelope has both side edges ( 7a, 8a) of at least one side flap (5) substantially offset from each other by at least 3 mm, and / or that at the bottom fold of the bottom edge (111a), and at least one side therefrom, one pair is formed of the lower fold lines (112, 113, 114, 115), and that the lower edge (111a) of the envelope is flat in the direction away from the closure flap (103) parallel to the envelope plane opposite the nearest lower fold lines (112) , 114) bottom pair of pleats, offset by at least 3 mm. Envelope according to claim 1, characterized in that the two side flaps (5) have lateral edges (7a, 8a) offset by at least 3 mm relative to one another in a direction parallel to the plane of the envelope. Envelope according to claim 1 or 2, characterized in that for each side flap (5) comprising offset lateral edges (7a, 8a), it is formed parallel to these edges (7a, 8a) and together with them a double fold forming a groove bends (9) for bending in the reverse direction, wherein the side flaps (5) of the envelope in a flat ·· ···· state contain side fold lines (17, 18) located ···················· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · a fold line extending along the lateral edge of the fold (10). and with lateral edges (7a, 8a), (9) and further therefrom (7a), a groove is formed by the lower edge of the fold (112, Envelope according to one of Claims 1 to 3, characterized in that a pair of grooves 113) is provided between the front wall (102) and (111a) and between the rear wall (104) and the bottom edge (111a) is one pair of fold lines (114, 115) is formed and that the lower edge (IIIa) is offset by at least 3 mm relative to the closest bottom fold lines (112, 114) disposed thereon. Envelope according to one of claims 1 to 4, characterized in that the lateral edges (7a, 8a) are offset by at least 5 mm relative to one another in the direction parallel to the plane of the envelope and / or that the lower edge (IIIa) is in the same plane as the lower folding grooves (112, 114) nearest to it, offset by at least 5 mm.