ES2363431B1 - THERMOFORMED CONTAINER - Google Patents

Abstract

Thermoforming container, consisting of a tray (1) and a cover film (2) that is heat-sealed on it, the tray (1) having at least one corner a cutting line (4.1) that determines a tongue (4) opening that remains fixed to the cover film (2), so that said cutting line (4.1) defines a path of detachment of the cover film (2) for opening the container when pulling the tongue (4), said cutting line (4.1) being placed, at least a part of it, outside the perpendicular (P) to the bisector (B) of the angle ({al}) defined by that corner of the tray (1) , so that the detachment of the cover film (2) occurs progressively from specific areas, progressing along the path that defines the cutting line (4.1).

Description

Thermoforming container.

Technical sector

The present invention is related to the containers formed by a plastic tray or the like, in which the product to be packaged is housed, closing with a covering fi lm that is fixed to the tray by heat sealing, proposing such a container that is determined with an easy-opening solution of advantageous characteristics to open the container. State of the art

The product packaging solution is known by means of a container formed by a plastic tray or the like, in which the product to be packaged is housed and closed with a fi lm of cover that is fixed to the tray by heat sealing, determining a tight seal. .

These packages can be opened by cutting the closing fi lm, but for this it is necessary to have a suitable tool, such as a knife, scissors, etc., at the time and place of opening, with the risk of damaging the packaged product, when making the opening cut, in addition to the risk that the user may suffer damage.

Therefore, it is customary to determine the packages with solutions to perform the opening by detaching the fi lm of closing of its fixation on the tray of the container, which requires a manipulation that makes it necessary to have a means that allows the closing fi lm to be pulled to detach of its fixation.

In that sense, a solution consists in leaving a peripheral part of the closing fi lm, outside the fixation thereof, without binding to the tray of the container, so that that non-fixed outer peripheral part allows to grasp the fi lm and pull him to detach him from his fixation. This solution is problematic for opening the containers, due to the difficulty of making a suitable grip to pull with the force necessary to detach the closing fi lm.

Other solutions are oriented to the determination of an gripping tongue that allows to effectively grasp at a peripheral point the closing lm of the containers, to pull it; said tongue being determined, according to one embodiment, by an outer peripheral area of the closing fi lm, for example in a corner of the container, with said closing fi elm area fixed on a corresponding area of the sectioned tray of the package or joined by a weakened line compared to the rest of the tray.

In this way, a tongue formed by a piece of the tray of the container attached to the closing fi lm is achieved, by means of which an effective grip can be made to pull the closing fi lm in the sense of detaching it from its fixation from the line. separating the piece of the tray that corresponds to the tongue.

In known solutions of this type, the line at which the detachment of the closing fi lm begins is, however, a straight line perpendicular to the direction of traction exerted when pulling the fi lm, which determines despite everything considerable difficulty in initiating take-off, there is a great risk that the fi lm will tear without taking off along the entire start-off line. These problems are even more relevant in vacuum packaging, since the fi lm of coverage is contracted on the packaged product and on the tray of the container, the latter being fixed on the entire surface of contact with it, so it is much greater the surface that needs to be taken off.

Object of the invention

In accordance with the invention, a package made with an easy-to-open solution of advantageous characteristics for opening the package is proposed, correcting in a functional and practical manner the drawbacks of conventional solutions of the same application.

This package object of the invention consists of a tray for housing the product to be packaged, on which, once the product is housed, a cover fi lm is provided as a lid of the container, which by means of heat and vacuum contracts on the product and the tray and is fixed by heat welding on the mouth of the latter, determining a tight seal.

In the area of at least one corner of that package assembly, a tongue is determined by a cutting line that separates a piece of the corner of the tray from the rest of the tray, said piece of the tray being fixed to the fi lm lid, which keeps you in position.

In this way, an easy-opening solution formed by a tongue comprising a separate piece of the tray fixed on the fi lm lid is obtained, constituting a handle that allows the grip to be effectively pulled from the fi lm lid and detached from the tray.

The cutting line that separates the piece of tray constituting said opening tongue from the container extends transversely in the corresponding corner of the container, between the free edges of the sides that concur in said corner, said cutting line correlatively determining a line Start of detachment of the fi lm lid to open the container when the tongue is pulled.

According to the invention, said cutting line that determines the opening tongue of the package, is located in its entirety or, at least in one part, outside the perpendicular to the bisector of the angle of the corresponding corner of the package, said line being defined according to a con fi guration, curved, angled, broken, sinusoidal or mixtilinear, in such a way that it determines specific areas from which the detachment of the fi lm lid begins, when pulling the tongue, progressing the detachment then along the defined path by said cutting line.

In this way the detachment of the fi lm lid occurs in a progressive manner from one or more specific areas, so that the force necessary to initiate the detachment is minimal, therefore being easier to open the container than with Conventional solutions and, also, lower the risk of tearing the fi lm lid at the start of detachment for opening.

In one embodiment, the determining cutting line of the opening tongue is defined in an arcuate shape with the convexity towards the inside of the package, whereby the tongue results from an ergonomic configuration that adapts to the shape of the user's finger, facilitating further action to open the container.

Therefore, said package object of the invention results in very advantageous characteristics, its realization acquiring its own life and preferential character

with respect to packages with conventional easy-opening solutions of the same function.

Description of the fi gures

Figure 1 is an elevation view of a machine prepared to make the thermoformed container object of the present invention.

Figure 2 is the top plan view of the machine shown in Figure 1.

Figure 3 is an elevation view of a thermoformed container, provided with the solution object of the present invention, all according to a non-limiting example of practical embodiment.

Figure 4 shows the top plan view of Figure 3.

Figure 5 corresponds to a schematic perspective view of the package shown in Figures 3 and 4.

Figure 6 shows a perspective detail of the corner that incorporates the easy-to-open solution into the thermoformed container of Figures 3 to 5.

Figure 7 corresponds to section VII-VII indicated in Figure 6.

Figure 8 shows a top plan view of the corner of the container where the easy-opening solution is located.

Figures 9 to 18 show schematically details such as that of Figure 8, but with different possibilities for practical realization. Detailed description of the invention

The object of the present invention is a thermoformed container, of those constituted, as can be seen in Figures 3, 4 and 5, by a tray (1), in which the product (6) to be packaged is housed, going arranged on the tray (1) a fi lm in functions of the lid of the container.

This fi lm that we will call from now on fi lm lid (2), by heat and vacuum adapts to the shapes of the product (6), to the shape of the tray (1) and, depending on the compatibility between the materials of the fi lm lid (2) and tray (1), the fi lm lid

(2) It can be glued to the entire surface in contact with the tray (1), or it can only be welded to the mouth of the tray (1), establishing a tight seal on the product (6).

As can be seen in Figures 3, 4, 5 and 6, in at least one of the corners of the package, an easy solution is provided, which, according to the scheme in Figure 8, presents the following structural and morphological characteristics:

First, in the corner of the opener, a tongue (4) is determined, which, by means of a cutting line (4.1) that crosses the entire thickness of the wall of the tray (1), is independent from the rest of the tray (1), said tongue (4) being held in position by the action of the fi lm cover (2) that holds it.

As shown in Figure 8, the cut line

(4.1) extends to the free edges (1.1) and (1.2) of the tray (1), that is to the endpoints indicated with the numerical references (3 and 5). The extension lines of these free edges (1.1) and

(1.2) of the tray (1), delimit an angle (α), whose bisector is indicated with the reference (B). Well, according to the object of the present invention, the cutting line (4.1) is located in its entirety or at least in a part of it, outside the perpendicular (P) to the bisector (B) of the angle (α).

In this way, when the user wishes to proceed to the opening of the container, he takes the tongue (4) and, when pulling it, starts detaching the fi lm lid (2) in a progressive manner. In fact, according to the practical embodiment represented in Figure 8, the cutting line (4.1) has an arcuate configuration, with the convexity oriented towards the inside of the package. With this embodiment, when pulling the tongue (4), the initial detachment of the fi lm cover (2) takes place at the two points (3 and 5) and, from this initial detachment of the points (3 and 5), the Continuing to pull on the tongue (4) there will be a progressive detachment that will advance from points (3 and 5) to the center of the cutting line (4.1).

With this solution of openable, it is possible to reduce, in an important way, the effort that the user must make in the opening of the container, since said opening starts from points (3 and 5), and even, as will be seen later, it could be started from a single point, to progress progressively along the entire cutting line (4.1); so, from that moment on, it is easier to continue with the total detachment of the fi lm cover (2).

In conventional solutions, when pulling the tongue (4), the detachment starts simultaneously along a whole straight line that joins the points (3 and 5), said straight line coinciding with the perpendicular to the bisector (B) of the angle (α); so that, in front of what allows the solution now advocated, which is a take off initiated from one or a few points, to progressively advance in the take off, the conventional solutions establish a take off that occurs simultaneously throughout a whole line, which requires a considerably greater effort on the part of the user.

Furthermore, with the solution represented in Figure 8, the tongue (4) adopts a configuration that adapts to the shape of the user's finger, when the finger is disposed on it. This is achieved by matching the curvature of the cutting line (4.1), with the curvature of the user's finger, which gives said tongue an ergonomic character.

Figures 1 and 2 show the views of a machine capable of manufacturing the thermoformed container object of the present invention. This machine has, at its inlet end, a coil (18), in which the band of plastic material is wound, from which the trays (1) will be formed. This band is unwound from the coil (18) and then passes through a preheated zone (17), to reach a station (16) in which, by means of molds, pressure and / or vacuum, the cuvettes of the trays (1).

At the exit of the forming station (16), the trays of the formed trays (1) appear, as can be seen in Figure 2. According to the example of practical non-limiting embodiment represented in Figures 1 and 2, they form the tray trays (1) in sets of three trays (1) according to a direction transverse to the machine.

In one stage (15), blades carry out the cutting line (4.1) of the easy opener of each tray (1). This cutting line (4.1) crosses the entire thickness of the constituent material of the tray wall (1), but the tongue (4) of each tray (1) remains in position because all the trays (1) still follow forming part of the continuous band of plastic material that is developed from the coil (18). The cutting line (4.1) can also be rea

Use the tray (1) for the tray tray (1), depending on the type of cover (2) and the number of containers made per machine cycle.

Then you enter a loading area (14), in which, manually or robotically, the product (6) to be packaged inside the tray trays (1) is deposited. Then it goes to a stage

(13) in which the fi lm cap (2) is unwound from a corresponding coil and its preheating is carried out, to then proceed to a sealing stage (12), in which the fi lm cap (2), by The application of vacuum adapts to the shapes of the product (6) and the shape of the trays (1). Depending on the compatibility between the cover fi lm material (2) and the tray material (1), the cover fi lm (2) can stick to the entire surface in contact with the trays (1), or it is heat welded only to the mouth of the trays (1).

In a stage (11) the packaging is marked, to then pass them to a stage (10), in which a transverse blade passes and cuts the continuous band of packages, in groups of three correlative units in the transverse direction Finally, by means of four circular blades (9), proceed to a longitudinal cut. Different forms of cutting can be raised, without altering the concept of the invention, such as cutting with a rounded corner, cutting with a straight corner, or other shapes.

On both sides of each central container, the two central blades (9) make respective cuts that separate these central containers from the lateral containers; while the two extreme blades (9) cut the leftover strips that are generated along the two lateral longitudinal edges of the package assembly; so that these leftover strips are rolled into a pair of rollers (8) that collect them properly.

At the end of the machine there is an exit belt (7), through which the finished and independent containers leave each other.

It should be noted that, once the transverse cutting blade (10) has acted and the four blades (9) have also acted, the tongue (4) of each package is held in position, held by the fi lm lid

(2) and only for this one, since at that time, by virtue of the cutting line (4.1), each tongue (4) is independent of the rest of the respective tray (1). Accordingly, the present invention is also applicable to any thermoforming package, not being limited to the preferential embodiment of the type of second skin packaging as described above.

With the same concept that the cut line

(4.1) be located outside the perpendicular of the bisector

(B) of the angle (α) and without altering the essence of the invention, different configurations of said cutting line (4.1) can be carried out. Thus, in Figure 9 the cutting line (4.1) is made up of two straight sections at an angle with the vertex oriented towards the inside of the container; so that again, with this solution, the detachment of the fi lm cover (2) starts from points (3 and 5), then progressing along the mentioned straight sections of the cutting line (4.1), until get to the point of the vertex.

A solution is shown in Figure 10 in which the cutting line (4.1) is a sinusoid. With this con fi guration, the detachment of the fi lm cover (2) also starts from points (3 and 5) and, at a time of said detachment, it also begins to take off from a third point (19).

In Figure 11 the cutting line (4.1) offers a sawtooth configuration; so that the detachment of the fi lm cover (2) begins simultaneously with points (3, 5 and 20).

The solution in Figure 12 is a variant of that represented in Figure 11; with which the detachment of the fi lm cover (2) begins at a point (21) and, after a slight progression, subsequently begins at points (3 and 5).

Figure 13 shows a solution in which the cutting line (4.1) is arched, as in the solution represented in Figures 3, 4, 5 and 6, but now with the convexity facing outwards of the container; so that the detachment of the fi lm cover (2) occurs from a central point (22), progressing towards the extreme points (3 and 5).

Figure 14 shows a solution in which the cutting line (4.1) is defined by two straight sections, such as the solution in Figure 9, but now with the vertex facing outwards from the container; so that detachment occurs as with the solution of Figure 13, that is, it starts from a central point (22), progressing towards the extreme points (3 and 5).

Figure 15 is an embodiment like that of Figures 3, 4, 5 and 6, but now with the cutting line (4.1) con fi gured by two arched sections joined by a central straight section.

The solution of Figure 16 shows an embodiment, in which the cutting line (4.1) is a single straight line, but does not coincide with the perpendicular

(P) to the bisector (B) of the angle (); so that

α the condition is still fulfilled that, by pulling on the tongue (4), the detachment of the fi lm cover (2) starts from one extreme point (3) and progresses towards the other extreme point (5).

Figure 17 shows a solution in which the cutting line (4.1) is defined according to a broken shape, so that the detachment of the cover (2) starts at two points (23 and 24), to progress through the zones lateral towards the extreme points (3 and 5) and through the middle area towards a central point (25).

Figure 18 shows a solution with a cut line (4.1) similar to that of Figure 17 but with said cut line (4.1) defined in sinusoidal form.

Accordingly, the object of the invention is not modified by the possible different configurations adopted by the cutting line (4.1), as long as it is satisfied that said cutting line (4.1) is located, at least in one part from it, outside the perpendicular (P) to the bisector (B) of the angle (α); so that when the opening tongue (4) is pulled, the detachment occurs progressively, starting from at least one point, as is the case of point (21) in the solution of Figure 12 or the point

(22) in the solution of Figures 13 and 14, or even the end point (3) in Figure 16 and, preferably, from the end points (3 and 5) of the cutting line (4.1), then progressing the detached along the path that defines the con fi guration of said cutting line (4.1).

Claims (9)

1. Thermoforming container, which is constituted by a tray (1), in which the product (6) to be packaged is housed, and a fi lm lid (2) that is heat sealed on the tray (1), having the latter, in at least one of its corners, an easy solution, from which the detachment of the fi lm lid (2) begins, along a path that extends between the two edges (1.1, 1.2) of the tray (1) that delimit said corner and specifically between two points (3, 5) ends, located on either side of the bisector (B) of the angle (α) defined in said corner; characterized in that the initial detachment path of the fi lm cover (2) corresponds to a cutting line

(4.1)

that cuts to the corner of the tray (1) and that extends to the edges (1.1, 1.2) free of the latter, defining an opening tab (4) independent of the rest of the tray (1) and that remains fixed all lm cover (2); and because the cut line

(4.1)

it is located, at least in a part of it, outside the perpendicular (P) to the bisector (B) of the angle (α) defined in that corner, where the opening tab (4) is located; all this so that, when pulling the opening tab (4), the detachment of the fi lm cover (2) occurs progressively, starting from at least one point and, preferably from the two points (3 and 5 ) ends, then progressing along the take-off path defined by the cutting line (4.1).

2. Thermoforming container, in all according to the first claim, characterized in that the cutting line (4.1) has an arc configuration.

3.

Thermoformed container, in all according to the first claim, characterized in that the cutting line (4.1) has a con fi guration defined by two or more straight sections.

Four.

Thermoformed container, in all according to the first claim, characterized in that the cutting line (4.1) has a mixtilinear configuration, defined by one or more arcuate sections and one

or more straight sections.

5.

Thermoforming container, in all according to the first claim, characterized in that the cutting line (4.1) has a sinusoidal configuration.

6.

Thermoforming container, in all according to the first claim, characterized in that the cutting line (4.1) has a sawtooth configuration.

7.

Thermoforming container, in all according to the first claim, characterized in that the cutting line (4.1) has a straight configuration which, with respect to the bisector (B) of the angle (α) of the opening corner, forms a non-right angle.

8.

Thermoforming container, in all according to the first and second claims, characterized in that the cutting line (4.1) has convexity oriented towards the inside of the container, defining an ergonomic detachment tongue (4), with a configuration that adapts to the conformation of the user's finger.

 ES3233 3343 3B   SPANISH OFFICE OF THE PATENTS AND BRAND Application no .: 201100479 SPAIN Date of submission of the application: 03.05.2011 Priority Date: REPORT ON THE STATE OF THE TECHNIQUE 51 Int. Cl.: See Additional Sheet RELEVANT DOCUMENTS

Category

Documents cited Claims Affected

X

US 5516035 A (STONE) 05/14/1996, Summary; figures 1-10 1,2,8

X

JP 59199463 (TERUMO) 11/12/1984, Figures 6-9 1,3,5,6

X

US 2003056475 A1 (NAKABAYASHI ET AL.) 03/27/2003, Summary; figure 3 1.4

X

US 5393032 A (CEDERROTH) 02/28/1995, Summary; figure 3 1.6

X

EP 2159164 A1 (ALCAN TECHNOLOGY & MANAGEMENT) 03/03/2010, Summary; figures 1,2,8

X

EP 2284097 A1 (SEALPAC) 02/16/2011, Summary; figures 1,2,8

X

GB 2161782 A (TOYO SEIKAN KAISHA) 01/22/1986, Summary; figures 1.4

X

EP 0001094 A1 (BEHRINGWERKE) 03/21/1979, Summary; Figure 1 1.3

Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the date of priority submission of the application E: previous document, but published after the date of submission of the application

This report has been prepared • for all claims • for claims no:

Date of realization of the report 20.07.2011

Examiner F. Monge Zamorano Page 1/5

REPORT OF THE STATE OF THE TECHNIQUE Application number: 201100479 CLASSIFICATION OBJECT OF THE APPLICATION B65D77 / 20 (2006.01) B65D75 / 32 (2006.01) B65D75 / 58 (2006.01) Minimum documentation sought (classification system followed by classification symbols) B65D Electronic databases consulted during the search (name of the database and, if possible, terms of search used) INVENTIONS, EPODOC State of the Art Report Page 2/5  WRITTEN OPINION Application number: 201100479 Date of Written Opinion: 20.07.2011 Statement

Novelty (Art. 6.1 LP 11/1986)

Claims Claims 7 1-6, 8 IF NOT

Inventive activity (Art. 8.1 LP11 / 1986)

Claims Claims 1-8 IF NOT

The application is considered to comply with the industrial application requirement. This requirement was evaluated during the formal and technical examination phase of the application (Article 31.2 Law 11/1986).  Opinion Base.- This opinion has been made on the basis of the patent application as published. State of the Art Report Page 3/5  WRITTEN OPINION Application number: 201100479 1. Documents considered.- The documents belonging to the state of the art taken into consideration for the realization of this opinion are listed below.

Document

Publication or Identification Number publication date

D01

US 5516035 A (STONE) 05/14/1996

D02

JP 59199463 (TERUMO) 12.11.1984

D03

US 2003056475 A1 (NAKABAYASHI et al.) 03/27/2003

D04

US 5393032 A (CEDERROTH) 28.02.1995

D05

EP 2159164 A1 (ALCAN TECHNOLOGY & MANAGEMENT) 03.03.2010

D06

EP 2284097 A1 (SEALPAC) 02/16/2011

D07

GB 2161782 A (TOYO SEIKAN KAISHA) 22.01.1986

D08

EP 0001094 A1 (BEHRINGWERKE) 21.03.1979

2. Statement motivated according to articles 29.6 and 29.7 of the Regulations for the execution of Law 11/1986, of March 20, on Patents on novelty and inventive activity; quotes and explanations in support of this statement The purpose of the application is, as stated in the preamble of the first claim, “a thermoformed container, which is constituted by a tray (1), in which the product (6) to be packaged is housed, and a film lid (2) that is heat sealed on the tray (1), the latter possessing, in at least one of its corners, an easy-opening solution, from which the detachment of the lid film (2) begins, along a path which extends between the two edges (1.1, 1.2) of the tray (1) that delimit said corner and specifically between two end points (3.5), located on either side of the bisector (B) of the angle (a) defined in said corner. ” The application contains eight claims, of which the first is independent, the second to seventh claims depend directly on it and the eighth depends on the second. The first claim characterizes the invention by two aspects thereof: a) That the initial detachment path of the cover film (2) corresponds to a cutting line (4.1) that cuts to the corner of the tray (1) and that extends to the edges (1.1, 1.2) free of the latter, defining an opening tab (4) independent of the rest of the tray (1) and that remains fixed to the cover film (2) b) That the cutting line (4.1) is located, at least in a part of it, outside the perpendicular (P) to the bisector (B) of the angle (a) defined in that corner, where the opening tab (4) is located. The second to eighth claims characterize the invention by the shape of the detachment path of the lid, that is, by the geometric shape of the glue or weakening line in the corner from which the opening is initiated and constituting the device "Easy" of the object of the request. This device is not only disclosed, with different embodiments, in the field of thermoformed packaging, but also in other types of packaging, such as bags, brik containers, canned cans, etc. Having made the relevant search, numerous disclosures have been found that anticipate the characterization of the first claim. All documents cited in the State of the Art Report disclose tabs with peel lines that are not perpendicular to the bisector. It should be taken into account that the angle (a) is unique and therefore its bisector is also unique. The perpendicular to the bisector form a family of relatively small parallel straight lines by comparison with the number of straight, curved or mixed lines, which can be drawn and which do not coincide with said perpendicular to the bisector. The rest of the claims refer to as many alternative embodiments of the invention and the forms of the take-off line that serve to characterize it have been found disclosed in the cited documents: both the sawtooth (more common) and the sinusoidal line, or Convexity orientation is anticipated in the cited documents. The characterization of claim 7 has not been disclosed: a straight line with an orientation different from that perpendicular to the bisector. However, it is so close to the others (it is still a component of the composite line of claim three) that it can hardly be recognized by itself inventive activity. In that sense, it should also be noted that although the device that facilitates the opening of the package by the proper installation of the welding or bonding cord or the weakening line, fulfills an easy to understand function, the different shapes of said cord or line they do not seem to fulfill an equally decisive mission for the invention. Neither the description nor any other part of the application can infer what technical problem solves a sinusoidal bond line that does not solve a broken paste line formed by two lines. The “problem-solution” method for the evaluation of inventive activity, recommended by the exam guidelines of the Spanish Patent and Trademark Office, page 159 and following, (available on the SPTO website: State of the Art Report Page 4/5  WRITTEN OPINION Application number: 201100479 http://www.oepm.es/export/sites/oepm/comun/documentos_relacionado/PDF/DiredaresExamenPatentes.pdf), in turn in accordance with the guidelines of the European Patent Office, would result here that the existence of the line or cord is the answer to the problem of opening a container without the use of tools, but that the shape of said line or cord is an aesthetic solution, therefore lacking relevance in the field of patent law, although perhaps not in other areas of industrial property law, such as design law or trademark law. In any case, whether they are considered aesthetic or functional, these forms are anticipated in the documents cited in the EIT. Thus, we find in D1 (Stone, figure 3, elements 16 and 20), D5 (Alcan, figure 2, elements 24 and 26) and D6 (Sealpack, figure 1) the arched configuration of the cutting line, which in the application It is represented in Figure 4 (elements 4 and 4.1) and characterizes the invention in the second claim. The cutting line 4.1 formed by two straight sections, which characterizes the invention in claim three, is disclosed in documents D2 (Terumo, figure 9) and D8 (Behringwerke, figure 1). More abundantly, as the characteristic part specifies that they can be "... two or more straight sections." Said characterization can be understood as disclosed in the documents that anticipate the sawtooth-shaped line and that are cited in relation to the sixth claim The fourth claim characterizes the invention in general, as it claims that the cutting line has any geometric shape composed of one or more straight sections and one or more curved sections. Documents D3 (Nakabayashi, figure 3) and D7 (Toyo, figures 7 and 9, elements 7 and 8) disclose cut lines conforming to said characterization The fifth claim characterizes the invention by the sinusoidal shape of the cutting line, which is also disclosed in D2 (Terumo, figure 8) The sixth claim characterizes the invention because the cutting line is shaped like a sawtooth. Again D2 (Terumo, figures 6 and 7) and D4 (Cederroth, figure 3) disclose said form for the cutting line of the "easy" tongue. The seventh claim characterizes the invention because the cutting line is a simple straight line that cuts to the bisector of the angle (a) but with an angle other than 90 °. Taking into account that no surprising effect can be seen in said angle of 90 ° with respect to slightly higher or lower angles, it is not possible to recognize inventive activity to this claim, which, if it were done, would reserve for the applicant the rights over all containers with transverse opening lines, except those that will cut the bisector at 90º. And this, without a technical function appreciably different from the one that meets the normal to the bisector. To a greater extent and as stated in a previous paragraph, this claim may be understood in advance by the disclosures of the aforementioned documents in relation to claim three, which characterizes the invention because the cut line is formed by two straight lines, of the that at least one, for strictly geometric reasons, cannot coincide with the normal one to the bisector. Finally, the eighth claim characterizes the invention by the ergonomic design, with inward-facing convexity and a configuration related to the geometric characteristics of the finger of a normal user. D1 (Stone, figures 1 to 3), D5 (Alcan, figure 1, elements 24 and 26) and D6 (Sealpack) that gets to draw the user's hand in the opening operation of its container (figures 2, 3 and 4 ), disclose this feature of the invention. Thus, taking into account the foregoing considerations and in the opinion of the examiner, the attribute of novelty, within the meaning of article 6 of the current Patent Law 11/1986, to the first to sixth and eighth claims could not be recognized; nor that of inventive activity, within the meaning of article 8 of said law, to any of the first to eighth claims of the application. State of the Art Report Page 5/5