FR2570680A3 - Plastic or paper bag - Google Patents

Plastic or paper bag Download PDF

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Publication number
FR2570680A3
FR2570680A3 FR8414843A FR8414843A FR2570680A3 FR 2570680 A3 FR2570680 A3 FR 2570680A3 FR 8414843 A FR8414843 A FR 8414843A FR 8414843 A FR8414843 A FR 8414843A FR 2570680 A3 FR2570680 A3 FR 2570680A3
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FR
France
Prior art keywords
bag
faces
folded
order
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8414843A
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French (fr)
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FR2570680B3 (en
Inventor
Marcello Andelini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANDELINI DORICA PLASTIK
Original Assignee
ANDELINI DORICA PLASTIK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ANDELINI DORICA PLASTIK filed Critical ANDELINI DORICA PLASTIK
Priority to FR8414843A priority Critical patent/FR2570680B3/en
Publication of FR2570680A3 publication Critical patent/FR2570680A3/en
Application granted granted Critical
Publication of FR2570680B3 publication Critical patent/FR2570680B3/en
Expired legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45CPURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C3/00Flexible luggage; Handbags

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  • Bag Frames (AREA)

Abstract

Bag made of plastic material or of paper, characterised in that there is folded longitudinally, and in a manner which is more pronounced at its ends, a tubular sheet 1 which forms the bag, in order to obtain a right prism having, as a base, a regular polygon with an even number of sides, greater than four, and preferably greater than six, and in that each lateral face 5 of this right prism is folded longitudinally towards the inside, with the exception of two opposite lateral faces 4, 4a, forming two half-faces 5a, 5b which are closed in bellows fashion against the opposite lateral faces 4, 4a forming an edge 6 in such a way that, in order to form the bottom of the bag, this edge 6 which holds the folded panels together and fixes them is welded to a support disc 2, inside the bag, and in that in order to form the neck of the bag, at the opposite end to the base, the folded panels are reinforced at the location of the faces 4, 4a and regularly pierced in order to be traversed by a closing string 3.

Description

L'invention concerne un sac réalisé de préférence en partant d'une feuille tubulaire en matière plastique fermée à une extrémité sur une base de renforcement et traversée à l'autre extrémité par un cordon servant à resserrer le col du sac. The invention relates to a bag preferably made from a tubular plastic sheet closed at one end on a reinforcement base and crossed at the other end by a cord used to tighten the neck of the bag.

Les sacs classiques de ce type sont réalisés comme les sachets normaux dans lesquels on obtient le fond en pliant longitudinalement une feuille tubulaire suivans deux dièdres opposés transversalement dont les origines respec tives sont situées dans le même plan central et en soudant suivant une ligne diamétrale l'extrémité de fond de la feuille tubulaire. De cette manière, le fond se termine en coin et le sac, s'il est vide, a une forme écrasée une fois rempli, ce sera pratiquement un parallélipipède. The classic bags of this type are produced like normal sachets in which the bottom is obtained by longitudinally folding a tubular sheet following two transversely opposite dihedrons whose respective origins are located in the same central plane and by welding along a diametrical line the bottom end of the tubular sheet. In this way, the bottom ends in a corner and the bag, if empty, has a crushed shape when filled, it will be practically a parallelepiped.

Si l'on veut conserver toujours au sac une telle forme et une certaine rigidité, même quand il est vide, on applique à son fond une plaque de base, par exemple rectangulaire, jouant le rôle de support.If one wants to always keep the bag such a shape and a certain rigidity, even when it is empty, one applies to its bottom a base plate, for example rectangular, playing the role of support.

Si l'on préfère que le sac ait une forme cylindrique, le pliage du fond, décrit plus haut, n' est pas appropriée étant donné que l'application d'une base circulaire déser- mine des gonflements peu esthétiques. Pour éviter cela, on peut réaliser le sac en deux pièces, à savoir une feuille cylindrique qui constitue la paroi latérale et une feuille circulaire qui représente le fond du sac et qui est soudée comme base du cylindre ; mais cela entrain de nombreuses complications et une augmentation du prix de revient. If it is preferred that the bag has a cylindrical shape, the folding of the bottom, described above, is not suitable since the application of a circular base results in unsightly swellings. To avoid this, the bag can be made in two pieces, namely a cylindrical sheet which constitutes the side wall and a circular sheet which represents the bottom of the bag and which is welded as the base of the cylinder; but this leads to many complications and an increase in the cost price.

Avec le sac selon l'invention, on vise à éviter les inconvénients susdits en réalisant, grâce à des pliages lon gitudinaux, en partant d'une feuille tubulaire, de préférence en matière plastique, un prisme droit ayant pour base un polygone régulier à nombre pair de cotes, supérieur à quatre, de préférence à six côtés, les faces latérales de ce prisme, à l'exception de deux faces latérales opposées, étant encore pliées et fermées en soufflet, afin que des deux extrémités de la feuille tubulaire initiale, l'une soit scellée par des soudures et soit renforcée par un disque de raidissement intérieur au sac, et l'autre soit percée à intervalles réguliers pour pouvoir être traversée par un lacet de fermeture. With the bag according to the invention, the aim is to avoid the abovementioned drawbacks by producing, by means of lengthwise folds, starting from a tubular sheet, preferably made of plastic, a straight prism based on a regular polygon with a number pair of dimensions, greater than four, preferably six sides, the lateral faces of this prism, with the exception of two opposite lateral faces, being still folded and closed in bellows, so that at the two ends of the initial tubular sheet, one is sealed by welds and is reinforced by a stiffening disc inside the bag, and the other is pierced at regular intervals so that it can be crossed by a closure lace.

On obtiens de cette manière un article qui ne nécessite pas de mesures particulières de fabrication, différentes de celles des sacs classiques mais qui, au contraire, présente des améliorations fonctionnelles et esthétiques nota- bles.In this way, an article is obtained which does not require any particular manufacturing measures, different from that of conventional bags, but which, on the contrary, presents notable functional and aesthetic improvements.

Les avantages et les caractéristiques de l'invention seront rendus plus évidents par sa description qui suit, considérée en même temps que les dessins annexés qui sont des perspectives schématiques et sur lesquels
La fig. 1 représente le sac selon l'invention, fermé et appuyé sur le fond.
The advantages and characteristics of the invention will be made more evident by its description which follows, considered at the same time as the appended drawings which are schematic views and on which
Fig. 1 shows the bag according to the invention, closed and supported on the bottom.

Les fig. 2 et 3 montrent partiellement, à deux moments successifs, la façon dont on obtiens le fond. Figs. 2 and 3 partially show, at two successive moments, the way in which the background is obtained.

La fig. 4 représente le sac fermé et couché sur un côté. Fig. 4 shows the bag closed and lying on one side.

La fig. 5 montre partiellement le sac quand il est ouvert. Fig. 5 partially shows the bag when it is open.

Comme on le comprend immédiatement d'après les dessins, et en particulier les fig. 1 et 4, le sac selon l'invention est formé en une seule feuille 1, par exemple en matière plastique, de préférence déjà tubulaire, munie intérieurement, à la base, d'un disque de renforcement 2 ayant aussi une fonction de support et à l'ouverture d'un cordon 3 passant dans des trous pratiqués dans le col du sac. As can be understood immediately from the drawings, and in particular FIGS. 1 and 4, the bag according to the invention is formed in a single sheet 1, for example of plastic material, preferably already tubular, provided internally, at the base, with a reinforcing disc 2 also having a support function and at the opening of a cord 3 passing through holes in the neck of the bag.

Le disque de renforcement 2 est en tire té sur les fig. 1 et 4. Pour pouvoir le fermer et le fixer sur le disque à l'endroit d'une de ses extrémités, on plie d'abord longitudinalement la feuille tubulaire 1 pour obtenir un prisme droit ayant pour base un hexagone régulier. On laisse telles quelles deux faces latérales opposées de ce prisme 4, 4a tandis que l'on replie longitudinalement les autres faces latérales 5 vers l'intérieur, en particulier aux deux extrémités de la feuille tubulaire, en deux demi-faces 5a, 5b (fig. 2).En rapprochant entre elles les demi-faces 5a, 5b contre les faces latérales 4, 4a jusqu'à ce qu'elles se rejoignent à l'endroit des deux extrémités de la feuille tubulaire 1, devenue un prisme droit, on obtiens d'un côté la base et de l'autre le col d'ouverture. En efffes, dans la base de fond, les pans pliés des demi-faces 5a, 5b et des faces latérales LI, L'a forment une arête transversale 6 (fig. 3) et, on les soude ensemble ; on écrase les pans repliés formant l'arête 6, les plis étant indiqués en tireté sur la fig. 4, contre le disque de renforcement 2 disposé à l'intérieur du sac et on les fixe sur celui-ci et entre eux par des soudures 7. A l'extrémité d'ouverture, on renforce les pans pliés à l'endroit des faces 4, L'a et on y perce des trous alignés pour le passage du cordon de ferme ture 3 (fig. 5).  The reinforcing disc 2 is drawn in fig. 1 and 4. In order to be able to close it and fix it on the disc at one of its ends, the tubular sheet 1 is first folded longitudinally to obtain a straight prism based on a regular hexagon. Two opposite lateral faces of this prism 4, 4a are left as they are while the other lateral faces 5 are folded inwards longitudinally, in particular at the two ends of the tubular sheet, into two half-faces 5a, 5b ( Fig. 2). By bringing the half-faces 5a, 5b together against the lateral faces 4, 4a until they meet at the location of the two ends of the tubular sheet 1, which has become a straight prism, you get the base on one side and the opening neck on the other. In efffes, in the bottom base, the folded sides of the half-faces 5a, 5b and of the lateral faces LI, A form a transverse edge 6 (fig. 3) and, they are welded together; the folded sides are crushed forming the edge 6, the folds being indicated in dotted lines in FIG. 4, against the reinforcing disc 2 placed inside the bag and they are fixed on it and between them by welds 7. At the opening end, the folded sides are reinforced at the location of the faces 4, A and we drill holes aligned for the passage of the closure cord ture 3 (fig. 5).

Claims (1)

REVENDICATION CLAIM Sac en matière plastique ou en papier, caractérisé en ce que l'on plie longitudinalemens et de façon plus marquée à ses extrémités une feuille tubulaire (1) qui forme le sac, pour obtenir un prisme droit ayant pour base un polygone régulier à nombre pair de côtés, supérieur à quatre, de préférence à six côtés, que l'on plie longitudinalement vers l'intérieur chaque face latérale (5) de ce prisme droit, à l'exception de deux faces latérales opposées (4, 4a) for mant deux demi-faces (5a, 5b) que l'on ferme en soufflet contre les faces latérales opposées (4, L'a) en réalisant une arrête (6), de sorte que pour former le fond du sac on soude cette arête (6) qui maintiens assemblés les pans pliés et les fixe sur un dispositif de support (2) intérieur au sac, et en ce que, pour former le col du sac à l'extrémité opposée à la base, les pans pliés sont renforcés à l'endroit des faces (4, 4a) et percés régulièrement pour être traversés par un cordon (3) de fermeture.  Plastic or paper bag, characterized in that a tubular sheet (1) which forms the bag is folded longitudinally and more markedly at its ends, to obtain a straight prism based on a regular polygon with an even number sides, greater than four, preferably six sides, which are folded longitudinally inwards each side face (5) of this straight prism, with the exception of two opposite side faces (4, 4a) for mant two half-faces (5a, 5b) which are closed in bellows against the opposite lateral faces (4, A) by making a stop (6), so that to form the bottom of the bag this edge is welded ( 6) which hold the folded panels together and fix them on a support device (2) inside the bag, and in that, to form the neck of the bag at the end opposite to the base, the folded panels are reinforced at the 'location of the faces (4, 4a) and regularly drilled to be crossed by a closure cord (3).
FR8414843A 1984-09-27 1984-09-27 PLASTIC OR PAPER BAG Expired FR2570680B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8414843A FR2570680B3 (en) 1984-09-27 1984-09-27 PLASTIC OR PAPER BAG

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8414843A FR2570680B3 (en) 1984-09-27 1984-09-27 PLASTIC OR PAPER BAG

Publications (2)

Publication Number Publication Date
FR2570680A3 true FR2570680A3 (en) 1986-03-28
FR2570680B3 FR2570680B3 (en) 1986-09-19

Family

ID=9308137

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8414843A Expired FR2570680B3 (en) 1984-09-27 1984-09-27 PLASTIC OR PAPER BAG

Country Status (1)

Country Link
FR (1) FR2570680B3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764029A (en) * 1987-07-02 1988-08-16 Abblett Donald R Disposable and collapsible trash receptacle
CN105795688A (en) * 2016-04-25 2016-07-27 泉州理工职业学院 Novel knapsack

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764029A (en) * 1987-07-02 1988-08-16 Abblett Donald R Disposable and collapsible trash receptacle
CN105795688A (en) * 2016-04-25 2016-07-27 泉州理工职业学院 Novel knapsack

Also Published As

Publication number Publication date
FR2570680B3 (en) 1986-09-19

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