DE102007041005A1 - Opening aid with variable angle of attack - Google Patents

Abstract

The invention relates to an opening aid for cardboard packaging, carton folding boxes, mailbox boxes and the like with an at least partially bent perforation line (2), the material bridges (4) or material gaps (3) one of the tangential to the perforation line (2) deviating alignment with a over the course the perforation line (2) have variable angle of attack alpha.

Description

The The invention relates to an opening aid for cardboard packaging, Versandfaltschachteln, Versandfaltkisten and the like with a at least partially bent perforation line whose material bridges or material gaps a changeable one Have Anstellwinkel.

State of the art

For the packaging from a variety of liquid, gel-like, solid and / or free-flowing products such as For example, from the group of laundry detergents, dishwashing detergents, Pharmaceuticals, personal care products, Agrochemicals, building materials, dyes, adhesives or food, is it common today Carton packaging to use.

Out The prior art is a variety of cardboard for the purpose the storage and transport of free-flowing goods known, including those which one by means of a cardboard formed closure lockable Cover include.

Usually Such covers are over a Perforation connected to the hull of the cardboard box, thus the lid by tearing open opened the perforation and the contents can be taken out of the cardboard box.

Also are transport or outer packaging for storage and transport of a variety of packaging such as bottles, cans, cartons, etc. known. Such as carton as well as sales assistant container to be used, also often as Mailing cartons are often used in retail. The advantage is that the sales units both the Function of a transport protective overpack as well later when placing in business the function of a promotional Fulfill presentation of the goods, without a separate presentation would be required. In many cases The respective, any carton is even simply like that cut open that content for the customer, preferably in self-service stores, only becomes visible.

According to experience For this, the outer cartons are cut obliquely or almost diagonally at the side parts, so that after complete Removing the upper carton area the so-called display sales unit is created, which still holds the block of goods, the piece removal and pricing but readily possible.

The Interest of retailers in the use of packaging as Goods presentation will supported by the packaging industry with corresponding developments. It Therefore, there are a variety of Umverpackungsvarianten, dealing with more or less big Convert expenses after transport and storage to sales assistants to let. For example, on the inside of the outer carton Making a tear tape pre-fabricated, which is to be torn open before the goods presentation, so that the sales assistant is born. The boxes can also made of corresponding blanks with one or more parts such Be that converting from pure packaging to display sales unit is relieved.

Especially perforations are used as an opening aid provided to open one the dispatch folding box without additional aids such as a Scissors or a knife to allow.

such Perforations represent a weakening of the material that reduces the stability of cardboard packaging and drop shipping boxes so that it opens to unintentional opening Packaging during transport, storage or handling. Around It is usually necessary to prevent this the wall thickness or the material quality, For example, by better paper types such as Kraftliner, with a perforated wall can be increased, resulting in a higher material usage and thus leads to costs and resource consumption.

The usual activities in this direction, however, require over the pure shipping box construction an additional one Expenditure incurred for a mass product is usually hard to carry. This is especially true also for multipart Versandfaltschachteln because this additional or new cartoners and magazines become necessary.

Object of the invention

Of the Invention has for its object to provide a carton the above has an easy and convenient to handle opening aid, the without the aid of a tool, the folding box can be opened, but compared to a carton without opening aid comparatively little material needed.

solution the task

The Task is by a trained as a perforation opening aid solved, formed as at least partially curved perforation is, their material bridges or material gaps one have variable angles of incidence relative to the perforation line

Advantages of the invention

advantage the opening aid according to the invention is compared to classic perforations with high pile ups and indentation resistance. Furthermore, the inventive opening aid suitable for use, even with two- or multi-shaft corrugated cardboard and functioning to be.

opening aid

The opening aid Represents a linear material weakening material gaps and material bridges in the blank of the cardboard, which is by pushing in, pulling out, Tearing or tearing relatively easy to destroy leaves, so an effortless, Disconnect or open for the first time For example, to ensure a lid member.

The material weakening follows an imaginary line passing through the centers of the material bridges as bases is defined.

Perforationslinienverlauf

Of the Perforationslinienverlauf is designed such that the perforation line in the assembled state of the packaging a closed polyline forms so that the cardboard segment enclosed by the perforation line Completely can be separated from the packaging. This is special advantageous in shipping folding boxes, whose front wall, head wall as well as parts of the side walls to Purposes of product presentation and product removability on a shelf usually be separated.

Around to realize a high stacking resistance of the cardboard packaging, it has proved to be advantageous that the perforation line arched over the side walls such mailing folding boxes runs. Especially advantageous Here is the parabolic Design of the perforation line.

It is particularly preferred that formed as a closed polyline Create a perforation line as a continuous function, over and above your course has at least four turning points. It is advantageous, respectively two turning points mirror symmetrical at the lower end of a side wall and to provide in the head wall.

In a further preferred embodiment of Invention is, starting from the first inflection point at least 50% of Perforationslinienwegs to the second turning point with the shaft alignment of Corrugated cardboard formed substantially parallel material gaps. This leaves a higher one Stacking resistance to achieve, as in material gaps, over the Perforation line course one from the parallel of the shaft alignment have different orientation.

The material bridges or gaps the opening aid according to the invention do not run tangentially to the perforation line, but point a different orientation from the tangential to the perforation line out.

These from the tangent deviating orientation can be described by the angle of attack α become.

angle of attack

Of the Angle of attack α is defined as the acute angle passing through the tangent line of the perforation line and the tangent of the material gap course in the piercing point formed by perforation line and material gap.

According to the invention the angle of attack α over the Course of the perforation on a variable size. This creates an optimal relationship between one possible huge transport stability and one as possible small, open the perforation line necessary tearing force configurable. So can the angle of attack α, for example in Field of the Kopflaschen be formed very pointed, since in this Area the packaging has hardly any load to bear, however, a comparative tear open light and clean the perforation line is advantageous while the angle of attack α in the area the side walls over one possible long path of the perforation line runs parallel to the shaft alignment and thus one possible realized high stacking resistance.

Especially It is advantageous that the angle of attack α is chosen such that the on the material gap at Rip the opening aid acting force vector an angle β between material gap and Force vector from 75 to 105 ° forms. This will be a for the user over The tear path following the perforation line has the same opening force realized by the user on a regular basis as convenient becomes.

packing material

When Material for such a container comes every foldable material in question. The container according to the invention is preferably made of paper, cardboard, corrugated cardboard and / or cardboard.

The Opening aid according to the invention is particularly suitable for single-, double- and multi-corrugated corrugated board.

One Paper should preferably have good printability and foldability exhibit as well as over one suitable stability feature. Furthermore, the paper should be for processing in automated manufacturing processes such as erecting and bottling plants suitable. The paper may be a chromo paper, vapor phase anticorrosion paper, Ceiling paper, duplex paper, vegetal parchment, gummed Paper, pressure-sensitive adhesive paper, heat seal paper, unilaterally smooth paper, highly elastic paper, woodfree paper, wood-containing paper, kraftliner, kraft paper, kraft paper, kraft paper, Light crepe, offset paper, wrapping paper, paraffin paper, parchment substitute, Glassine, satin paper, tempered paper, tissue paper, secondary kraft paper, Spun paper, straw paper, tincture paper, tracing paper, Velor paper, wax paper, wave paper and / or corrugated paper act.

One Cardboard should also be over have a good printability and foldability as well as a suitable stability feature. Furthermore, the box should be for processing in automated manufacturing processes such as erecting and bottling plants suitable. A carton may come from the group of chromo cartons, chromo replacement cartons, one-sided, smooth cartons, carton boxes, painted cartons, Multiplex cartons, corrugated cardboard, duplex boxes, triplex boxes are selected.

A Cardboard should have a suitable foldability as well as a suitable stability feature. Furthermore, the cardboard should be for processing in automated manufacturing processes such as erecting and bottling plants suitable. A cardboard can be corrugated or solid board solid board being a brown board, leather board, brownstone, one-sided smooth cardboard, felt board, gray board, hardboard, white board, Machine brown paperboard, machine board, mixed board, multiplex board, Duplex board, triplex board, corrugated board, card board, strong board, Straw cardboard, Wickelpappe, hand cardboard and / or drawing cardboard can.

in the The invention will be described below with reference to a mere exemplary embodiments drawing closer explained. In this case, particularly preferred embodiments and particularly preferred Combinations of features further described in detail. It shows:

1 Faltzuschnitt with opening aid

2 Detail view of the trained as perforation opening aid

3 Section of the perforation line with attacking force vector and variable angle α

4 Perforation line with variable angle of attack α and a first and a second inflection point

1 shows a blank for a product packaging of cardboard. Such a cardboard box is also called a "shelf-ready box." The blank 1 has a first sidewall 6a , a second side wall 6b as well as a front wall 7a and a back wall 7b on. In the assembled state of Produktumverpackung is the blank 1 shaped into a tube. At the top of the tube forming walls 6a . 6b . 7a . 7b are head-bags 8a . 8b . 9a . 9b pivotally arranged, which cover the head opening of the tube at least partially in the assembled state of Produktumverpackung.

The cut 1 has a perforation line 2 on, which is mirror symmetrical of the front wall 7a out over the side walls 6a and 6b as well as over the head-bags 8a and 8b extends. The perforation line 2 forms in the assembled state of the blank 1 a closed polyline, the areas of the front wall 7a , the side walls 6a . 6b as well as the head-bags 8a and 8b includes. The front wall 7a has at its bottom end a handle opening 5 on, by which a user tears through the perforation line 2 limited range can intervene.

The course of the perforation line 2 points in the lower part of the side wall 6a respectively. 6b each a first turning point 10a respectively. 10b on. A second turning point 11a respectively. 11b is on the head 8a respectively. 8b arranged. Between the two turning points, the perforation line runs approximately parabolic.

2 shows a detailed view of the perforation line 2 and its course over the front wall, a side wall and a Kopflasche. The perforation line 2 consists of material gaps 3 and material bridges 4 , where the material gap 4 is formed in a line shape. The in the 2 shown and labeled W, the wave orientation of the corrugated board, from which the blank 1 is shaped. The dash-dot line W thus runs parallel to a wave trough or wave crest of the corrugated cardboard.

How out 2 also visible, run the line-shaped material gaps 3 in the lower part of the perforation line 2 substantially parallel to the shaft alignment W, wherein they have a deviating from the parallel orientation in the upper region.

3 shows a detailed view of the perforation line 2 with at the material gap 3 adjoining Force vectors, wherein it is selected angle of attack α in such that the on the material gap 3 during the tearing of the opening aid acting force vector an angle β between the material gap 3 and force vector of 75 to 105 ° forms.

The course of the angle of attack α between the first turning point 10 and the second turning point 11 is good based on 4 to recognize.

1

folding blank

2

perforation

3

material gap

4

material bridge

5

grip opening

6

Side wall

7

Front / rear wall

8th

top flap

9

top flap

10

turning point

11

turning point

Claims (7)

Opening aid for cardboard packaging, shipping folding boxes, shipping crates and the like with an at least partially a curved perforation line ( 2 ), their material bridges ( 4 ) or material gaps ( 3 ) one from the tangential to the perforation line ( 2 ) deviating alignment with one over the course of the perforation line ( 2 ) has variable angle of attack α. Opening aid according to one of the preceding claims, characterized in that the angle of attack α is selected in such a way that on the material gap ( 3 ) acting upon tearing open the opening aid force an angle β between material gap ( 3 ) and force vector from 75 to 105 °. Opening aid according to one of the preceding claims, characterized in that the perforation line a first turning point ( 10 ) and a second turning point ( 11 ) having. Opening aid according to one of the preceding claims, characterized in that the perforation line between the first turning point ( 10 ) and the second turning point ( 11 ) shows a parabolic course. Opening aid according to one of the preceding claims, characterized in that starting from the first turning point ( 10 ) at least 50% of the perforation line path to the second inflection point ( 11 ) having material gaps substantially parallel to the shaft alignment (W) of the corrugated board ( 3 ) is trained. Opening aid according to one of the preceding claims, characterized in that the perforation line ( 2 ) over the front wall ( 7a ), the first side wall ( 6a ), the second side wall ( 6b ) as well as the first Kopflasche ( 8a ) and the second Kopflasche ( 8b ) runs. Opening aid according to one of the preceding claims, characterized in that the perforation line ( 2 ) in the assembled state of the packaging ( 1 ) forms a closed polyline.