MXPA97006100A

MXPA97006100A - Flexible bag to pack absorbing articles comprimib

Info

Publication number: MXPA97006100A
Application number: MXPA/A/1997/006100A
Authority: MX
Inventors: Hartz Wolfgang
Original assignee: Mcneilppc Inc
Priority date: 1995-02-08
Filing date: 1997-08-08
Publication date: 1998-10-15

Abstract

The present invention relates to a flexible bag for a plurality of compressible absorbent articles which are disposed arranged in parallel side by side, the bag comprising a plastic film and having an aprosimately rectangular base, a front side, a posteior side, two narrow sides, and an upper side, being closed on all sides, having a weakening line that marks an opening for the removal of one of the articles, and having a support band near the base, where (a) the weakening line extends from a first location to a longitudinal center of the upper one, towards and below the front side, draws the base to a second location approximately halfway down the forntal side, (b) the approximately rectangular base is sealed on its front, rear sides of the narrow sides to form a base seal, and (c) the support band comprises plastic film that is extends from the seal of the ba

Description

FLEXIBLE BAG PflRfi EMPRCRR COMPRESSABLE ABSORBENT ITEMS BACKGROUND OF THE INVENTION The invention relates to a flexible bag and to a process for producing the bag and for packaging in the same absorbable arycles. The Patent of l-.U.R. No. r), 282, bB7 describes bags of this genetically based product that, in terms of production and structure, are comparatively costly and complicated, and do not provide simple and hygienic handling. In the case of a stock exchange, at least one weakening line is provided which, after being destroyed, makes it impossible for items to be stored in a hygienically and reasonably safe manner. is due to the fact that said known pouch packing must be of such configuration that the opening of the pouch (-orinated by the debris weakening line is opened in order to allow the simple removal of other articles out of However, this leads to a risk of contamination of the 2th articles that, in the case of absorbent articles for feminine hygiene, can have consequences that are dangerous for the health. This is still considering that the known stock market is not stable, and that the stock can be easily dropped, resulting in the articles contained in the same can be connninar, thus aggravating the risks and disadvantages delineated before.

BRIEF DESCRIPTION OF THE INVENTION The object of the invention is thus to improve a flexible container of the known generic type, so that the bowl can be produced using a smaller amount of material and can be opened and closed in a friendly manner by the user. The invention is to make it possible to remove an article in a simple hygienic way. In addition, it is intended that the bag engages in a good dimensional abiity, with the result that the an + eni of the quality of the items packed in it is assured to a large extent. The invention relates to a flexible plasic bag for a plurality of compressible absorbent articles which are arranged in parallel side by side. The bag has an approximately rectangular base *, a front side, a back side, two narrow sides and an upper side. The bag closes on all sides and is provided with a weakening line that marks an opening for the individual removal of the items. The height of the bag is greater than the depth of the bag, the line of weakness is ex + ende, halfway along the bag, from the longitudinal center of the upper side towards the base, approximately half of the fron + side to the one in the bag. The base of the bag is closed by a support band directed downwards. Compressible items do not exert any large amount of pressure on any of the Sides of the bag filled with such items. It is possible to open the flexible bag simply by folding it to separate the bag in the weakening line. In this provision, you can easily remove an item from the bag, since the items in the bag are not exposed to any particular effort application. After removing an article, the opening closes to a high degree when the bag is placed in a vertical position on its support edge projecting down from the base.

BRIEF DESCRIPTION BE THE DRAWINGS The invention is explained in more detail below with reference to the schematic drawing of an illustrative / in which drawing: Figure 1 shows a perspective view of a closed flexible bag in the vertical position; Figure 2 shows a perspective view of the bag according to Figure 1 in an inverted position; Figure 3 shows a view of the front side of the bag; Figure 4 shows a plan view of the upper side of the bag of Figure 3; Figure 5 shows a bottom view of the bag of Figure 3; The figure shows the narrow section of the bowl of figure A, and the fi les 7a to 7j show procedural steps that produce the bag and for packaging absorbent articles in the same manner. ami ma DETRLLRDR DESCRIPTION OF THE INVENTION In FIGS. 1 and finally, a flexible bag 10 for a plurality of compressible absorbent articles 54 which are arranged in parallel side by side. Preferably, these are feminine hygiene articles, such as sanitary napkins. The bag 10 has an approximately rectangular base 12, a front side 14, a rear side IB, two narrow sides 18, 20 and an upper side 22. Furthermore, the bag 10 is closed on all sides. The closure of the side of the cover 22 comprises, for example, a welded seam 24 extending over the longitudinal center of the upper side 22, between the two narrow sides 18, 20. The narrow sides 18, 20 of the bag 10 are closed, for example, by welded seams 26, 28 running vertically at the longitudinal center of the narrow sides 18, 20. The upper side 22 and the front side 14 are provided with a weakening line 30 extending from the central welded seam 24. of the upper side 22 and, approximately perpendicularly with r-mirror to said welded seam 24, approximately half the length of the bag 1U, downwards from the delivery above about half of the front side 14. The destruction of this line of weakness 30 provides an opening for the individual removal of one of the articles. The weakening line 30 can be formed in the manner of a grooved line by perforating the film material 30 or, preferably, by reducing the thickness of the film material. In a preferred embodiment illustrated in FIG. weakening line 30 is preferably about LL0 inm. The height of the bag 10 is defined essentially by the length of the articles to be packed therein. The length of its front side 14 is a multiple of the depth of the bag or the depth of a narrow side thereof. The base 12 is enclosed by a support band 32 that extends downwards, like a support-support. 1: 1 material to produce the bag 10 is preferably a polyethylene film having a thickness of 0.040 min. However, one can also make use, depending on the purpose of the application, of a different film material of different dimensions. The bag 10 comprises a single portion of said film, the base 12 being formed by a section pushed inward, in the form of an internal fold 42 of the film portions 44, 4b of the front side 14 and back side-16. A Production line The support band 32 which is guided around the base 1 2, on the lower side thereof, occurs sealing the entire surface of the inwardly pressed film portions 44, 46 to the front side. and adjacent Side Ib adjacent, and specifically, in the legion of * • > one of two external folds 41, 43 formed thereon, said seal being of a width corresponding to the tur-a of the support band 32. A method according to the invention provides the following steps, to produce the bag 10, the 0 which are represented in the schematic drawing of figures 7a to 7j: According to figure 7a, a flat, continuous band 38 comprising a plastic film, moves forward in the direction of the arrow " x ", in steps in 5 length portions 39 corresponding approximately to the length of the bar 10. According to figure 7b, the film web 38 is folded over itself about a longitudinal axis 37, thus forming a fold longitudinal 40 on a longitudinal side and two longitudinal halves 34, 36, 0 located one above the other, of the film band 3B. In accordance with FIG. 7c, a weakening line 30 is produced in each case at a longitudinal center 45 of the length portions 39 of the upper longitudinal half 36 of the continuous film web 38, 5 transversely with respect to the direction "x" of movement of the film band 38, which weakening line 30 extends from an edge ex + ei no '">; &, which is parallel < - the longitudinal fold 40 and belonging to the upper longitudinal half 36, in the direction of the opposite longitudinal fold 40, approximately up to the central longitudinal axis of the longitudinal half of the thickness 36 of the film web 38. The longitudinal half in The kidney 34 projects laterally towards the outside, by means of an outer edge 58, beyond the outer edge 56 of the upper longitudinal half -i6. According to Figure 7d, the film portions 44, 46, located one above the other, of the lower and upper longitudinal halves 34, 36 are pushed inwardly inwardly in the longitudinal fold 40 in order to produce a internal fold 42. In this arrangement, the lower longitudinal half 34 of the film web 38 forms a lower external fold 41 with the lower film portion 44 of the internal fold 42, and the upper longitudinal half 36 forms an upper external fold 43 with The upper film portion 46. According to FIG. 7e, sealing of the entire surface occurs in each case of the lower longitudinal half 34 of the film web 38 to the lower film portion 44 of the internal fold 40 in the region of the outer fold 41, and, separately therefrom, sealing of the upper longitudinal half 36 of the film web 38 occurs to the upper film portion 46 of the internal fold 42, in the region of the external fold 43, forming a support band 32 in the process, and said sealing occurring over a width corresponding to the height of, for example, 7 inrn of the support band 32. According to Figure 7f, the ends Frontal and, subsequently, the posterior 48, 49 of the portions of length 50, corresponding to the length of a bag 10, of the longitudinal halves 34, 36, located one above the other, of the film band. 38 are sealed one after the other in order to form the narrow sides 10, 29 of the bag 10 and are separated from the film band 38. In accordance with Figure g, an inlet opening 51, formed by the external edges 56, 58 of the two longitudinal halves 34, 36 and located opposite the base 12, the LO bag is opened and widened by a compressed air jet "and" and two suction elements 62 in the "z" direction . According to Figure 7h, a stack 52 of longitudinally extending articles 54 is inserted into the bag 10, the articles being arranged with their main planes parallel to the narrow sides 18, 20. The number of articles 54 can be selected, which in a preferred embodiment can be from 18 to 20 sanitary napkins, so that the articles do not exert on the front side 14 and the back side-16, located in parallel opposite to said front side, or on the narrow sides 18, 20, separated opposites between each other in par-allele, from the bag 10 a force sufficient to cause the beeper to remain open in a relaxed condition. Also, in accordance with figure 7? , the outer boards 56, 58, enclosing the insertion opening 51, of the film material 38 are bent inwardly on the narrow sides 18, 20 in order to partially * close the insertion opening 51. According to Figure 7j , the introduction opening is closed after pressing the outer edges 5b, 58, so to the Front side 14 and the rear side 16 of the bag 10, against each one and sealing them, for example, by means of a pair of Welding rollers 60, any film projecting beyond the welded seam 24, is separated by means of the stiffening pieces 1. When the closed bag 10 filled with the absorbent articles 54 is opened, a force is exerted. of compression on the upper region of the back side 16 of the bag 10, while, at the same time, bending forces or tensile forces are exerted on the bag 10., on both sides of the weakening line 30, with the result that the line of weakness 30 is destroyed and a removal opening is provided in its place, through which removal opening in each case can be removed. absorbent article 54, such as a toal The sanitary. Said removal is readily possible since the sanitary napkin has been introduced into the bag, in a stack comprising a plurality of elements, without any large amount of application of pro-efforts, such as compression. As a matter of fact, the compressible articles packed in the bag do not exert any large amount of expansion force, by means of which axis the removal opening produced destroying the weakening line 30 could maintain a widely open position on the sides. narrow 18, 20 of the bag 10 from the inside- »On the contrary, the removal opening closes again to a high degree after having removed an article from the bag 10. Furthermore, this closing of the removal opening it is assisted by the support band 32 if the bag 10 is deposited on a flat surface after it has been used.

LIST OF APPOINTMENTS LO Bag 12 Base 14 Front side 16 Side post 18, 20 Narrow sides 22 Top side 24 Welded seam (upper side 22) 26 Welded seam (narrow left side) 28 Welded seam (narrow right side) 30 Line of weakness 32 Support band 34, 36 Longitudinal halves (film band 38) 37 Axis lon iu < l? nal 38 Film band 39 Length portions 40 Longitudinal bending (film band) 41, 43 External bends 42 Plain bends 45 Center length 44, 46 Portions of film 48, 49 End (front and rear of 39) 50 Portions length separate 51 Introductory opening 52 Battery 54 Items (sanitary napkins) 56, 58 External edges 60 Pair of solder rollers 62 Suction elements x Movement direction and Compressed air stream z Direction of the suction element

Claims

NOVELTY OF THE INVENTION CLAIMS i.- A flexible bag (10) for a plurality of compressible absorbent articles (54) which are arranged in parallel side by side, the bag (LO) having a height greater than the width and having a base approximately rectangular (12), a front side (14), a back side (16), two narrow sides (L8, 20) and an upper side (22) and being closed on all sides and being provided with a weakening line (30) which marks an opening for the removal of one of the articles (54), characterized in that the Line of weakening (30) extends from a first location close to a longitudinal center of the upper side '22), towards and down the front side (14) to the base (12) to a second location approximately halfway down the front side (14).
2. The flexible bag according to claim 1, further characterized in that the bag (10) comprises s the length portion (50) of a plastic film, the front side (14) and the rear side (16) of the bag (10) comprising the longitudinal halves (34, 36), of a film strip (38), folded longitudinally one above the other to form a long tudinal fold (40), and the base (12) being formed pushing the longitudinal fold (40) inward to form an internal fold (42) between the two long integral halves (34, 36) thereof, which halves are sealed in each case to one of the two portions of film (44, 46), forming the internal fold (42), so as to form a support band (32), and the two narrow sides (18, 20) being formed from the front and rear ends (48, 49) in each case of a portion of Long tud (50) l The film strip (38) folded, which front and rear ends are sealed between s and, in the region of the base (12), to the internal fold (40), while the upper side (22) is formed by the lateral external edges (56, 58) that are located opposite to the internal fold (42) , parallel thereto, belong to the two longitudinal halves (34, 36) of the film web (38) and are sealed together by a seam (24) along a longitudinal centerline parallel to the base (12). ).
3. The flexible bag according to claim 1, further characterized in that the weakening line (30) is formed by perforating the film material (38).
4. The flexible bag according to claim 1, further characterized in that the weakening line (30) is formed by reducing the thickness of the film material (38).
5. The flexible bag according to one of claims 1 to 4, further characterized in that the height of the weakening line '0) is 110 m on the front side.
6. The flexible bag according to claim 1, further characterized in that the support band (32) arranged around the edge of the base (12) is of a height of 7 nm. 7 - The flexible bag according to one of the claims ab, also characterized in that the film material (38) consists of a polye i lene axis 8. - The flexible bag in accordance with claim 7, characterized in that the thickness - The film of polietiJeno is 0.040 RMN. 9"~ The flexible bag shaft according to claim 1, further characterized by the articles (54) are sanitary napkins. 10. A method to produce a flexible bag and to pack-in the same absorbent, compressible articles, comprising the steps: transporting a flat, continuous band (38) comprising a plastic film forward in steps , in length portions (39) that correspond to approximately the length of the bag (LO); folding the film axis band (38) on itself around a longitudinal axis, thus forming a longitudinal fold (40) on one longitudinal side and two longitudinal halves (34, 36), located one on top of the other, of the band of film (38); pushing the portions of film (44, 46), located appendably in e *, i, of two longitudinal halves (34, 36) continuously inward in the long bending fold (40) in order to form an internal fold ( 42), The length halves (34; 36) of the film axis band (30) forming two external folds (41; 43) with the portions of the film (44; 46) of the inner fold (42); sealing a Longitudinal half (34) of the peel band (38) to a portion of the film (44) of the internal lobe (40) in the region of the external fold (41), and, separating it from, but simultaneously, sealing the top longitudinal length * (36) of the bathe < the film (38) to the upper film portion (46) of the internal fold (40) in the region of the external bend (43), said seal being over a width corresponding to the height of a support band (32); sealing the front and, subsequently, posterior ends (48, 49) of the length portions (50), which correspond to the length of a bag (10), of the longitudinal halves (34, 36), located adjacent to each other. yes, from the movie band (38) in order to form Los la < The stitches (18, 20) of the bag (10) and substantially simultaneously axis way separating the bag (10) axis the film band (38); characterized because: the flat baneja of the movieThe plastic axis is bent in a horizontal plane, i. forming longitudinal halves (34, 36) located one over the other; a weakening line (30) proximate a longitudinal center of the upper longitudinal half (36) of said length axis portions (39) is produced, substantially substantially transverse to the direction of movement (x) of the band Ib. movie (30), i to which li < 1e should have been taken (30), extended to an external edge (56), and parallel to the Longitudinal elbows (40) and corresponds to the upper longitudinal half * (36), towards the long tudinal fold (40), Approximately half of the external fold (43); an introduction opening (51), formed by external edges (56, 58) of the longitudinal halves (34, 36) and located opposite the base (12), of the bag (10) is opened and widened by a jet of compressed air (y); a stack (52) of articles (54) is inserted into the bag (10); the outer edges (56, 58), which enclose the introduction aperture (51), of the film material (38) are bent inwardly on the narrow sides (18, 20) in order to close-the aperture of introduction (51) partially, and the beech < The introduction (51) is closed after pressing the edges (56, 58), which correspond to the front side (14) and the back side (16) of the bag (10), one against the other and sealing them. 11. The method according to claim 10, further characterized in that the number of articles (54) combined to form a stack and inserted into a bag (10) in each case is such that the articles (54) do not exert any large amount of expansion force on either side (1 2, 14, 15, 18, 20, 22). 12. The method according to one of claims 10 or 11, further characterized in that use is made. of a plastic film?] that consists of poLie ileno. 13. - the process according to one of claims 10 to 12, further characterized in that the opening of the bag (10) is aided by suction means (62).