EP3277588A1

EP3277588A1 - Bag for transferring and packaging components of a contained enclosure

Info

Publication number: EP3277588A1
Application number: EP16712878.4A
Authority: EP
Inventors: Cédric Lambert; Stéphanie Armau
Original assignee: Lourd'innov
Current assignee: Lourd'innov
Priority date: 2015-03-30
Filing date: 2016-03-30
Publication date: 2018-02-07
Anticipated expiration: 2036-03-30
Also published as: WO2016156419A1; FR3034405B1; EP3277588B1; FR3034405A1; US10807771B2; US20180079558A1

Abstract

The invention relates to a bag (1) for sealingly packaging components, which includes: a flexible body (10) defining an inside space, including a communication opening (12) and a side wall (13) including a plurality of strips (130) folded against one another; and a joining device (14) which can selectively open or close the communication opening, and is shaped so as to be mounted on an enclosure to allow sealed communication between an inner cavity of the enclosure and the inside space of the bag, the bag being characterised in that at least one fold (131) made up of two strips opposite one another is detachably connected to at least one other fold (131).

Description

BAG FOR TRANSFERRING AND PACKAGING COMPONENTS OF A

CONFINED ENCLOSURE

FIELD OF THE INVENTION

The invention relates to a bag for the sealed package of components, and a method of packaging components with said bag. The invention applies in particular to the packaging of components transferred from a confined and controlled area such as a clean room or an insulator. These components may be sterile and / or contaminants.

STATE OF THE ART

Activity in confined areas such as insulators or clean rooms requires controlling the input and output of components of these areas, without loss of containment, to avoid contact between the controlled atmosphere of the confined area and the atmosphere exterior.

In particular for the output of confined zone components, it is known, in order to limit the number of manipulations and the operational cost of such transfers, to use a single package for a series of transfers, that is to say for remove components from the enclosure several times.

This package is typically a flexible bag of significant length, whose mouth is positioned in communication with the interior of the enclosure.

To achieve this communication without risk of loss of containment or contamination of the atmosphere confined by the outside atmosphere and vice versa, the flexible bag and the enclosure are advantageously equipped with a junction system such as that described in the document WO 1/023906.

Other possible joining systems are described, for example, in documents FR 2 721 289 and EP 2 091 051.

As can be seen in FIG. 1a, once the bag S has been placed in communication with the inside of the enclosure E, components C can be transferred from inside the enclosure to the inside of the bag. Then the bag is typically heat sealed, as shown in Figure 1b, to isolate the components in a closed compartment and detach the compartment from the rest of the bag.

In Fig. 1c, an additional length of bag may then be unfolded to be filled with other components. In order to store the unused length of the bag ergonomically while facilitating its handling, the bag is typically mounted on a rigid tube T. The assembly is mostly done manually by gradually fitting the entire length of the bag on the tube. This is a work requiring a significant time and may also cause problems cleaning and sterilization of the tube between the establishment of two successive bags.

In some other cases the bag is delivered already pre-mounted on a rigid tube, this tube is generally located inside the fold zone, which requires to throw the tube from the confined area after the bag has been completely used.

In addition, in all cases, such a tube has a large footprint.

Solutions to overcome the use of a rigid tube have already been proposed, as for example in WO 2009/153676. This solution provides to fold a length of the bag in a cavity of a circular box. However this system is also very bulky and can not be used in a narrow area.

There is therefore a need for a packaging bag compact, easy to use and less restrictive from an ergonomic point of view.

PRESENTATION OF THE INVENTION

The object of the invention is to propose a system for packaging components from a confined enclosure that does not have the drawbacks of the prior art. In particular, an object of the invention is to provide a packaging system less cumbersome than the prior art, and not posing a problem of cleaning or sterilization.

Another object of the invention is to provide a packaging system generating less waste than pouches mounted on tubes ready for use.

In this regard, the subject of the invention is a bag for the sealed package of components, comprising:

a flexible body delimiting an internal volume, comprising:

o an opening of communication, and a side wall comprising a plurality of folded strips against each other, and

a connecting device that can selectively close or release the communication opening, and being shaped to be mounted on an enclosure to allow tight communication between an internal cavity of the enclosure and the internal volume of the bag,

the bag being characterized in that at least one fold formed of two bands facing one another, is detachably connected to at least one other fold. Advantageously, but optionally, the sachet according to the invention may further comprise at least one of the following characteristics:

At least one web of a fold is detachably connected to at least one web facing a peelable weld of these webs.

- At least one fold comprises at least one detachable connector with at least one other fold.

The detachable connector comprises at least one yoke, and the bag further comprises at least one yarn connecting member corresponding to one or more plies.

- The connecting member comprises a through hole made in each yoke, and at least one shaped link to extend through the orifices of the inserts.

Each yoke is permanently attached to the wall or integrated into the wall, and comprises at least one cutting line extending from the through hole to one edge of the yoke.

The yoke is removably attached to the wall, being peelably welded to the wall, or comprising a temporary fixing means to the wall adapted to cooperate with a corresponding fixing means of the wall, the fixing means comprising one of the following group:

o latching device comprising two components disposed respectively on the yoke and the wall, facing one another, o Velvet-hook connection device arranged on the yoke and the wall, facing one another,

o Adhesive areas of the yoke and / or the wall, facing one another.

The yoke comprises a portion permanently attached to the wall or integrated therewith, a detachable portion attached to the connecting member, and a cutting line extending between the two parts.

At least one fold comprises a connector adapted to cooperate with a connector of an adjacent fold.

The connectors of two adjacent folds comprise a detent device comprising two components disposed respectively on the outer surface of two strips, facing one another.

The connectors of two adjacent plies comprise a velvet-hook connection device arranged on areas of the outer surface of two strips, facing one another.

Connectors of two adjacent plies include adhesive strips attached to the outer surface of two strips facing one another.

The bag further comprises a yoke attached to a side panel of the side facing the communication opening, the yoke having at least one projecting portion to allow its gripping.

The invention also relates to a method for packaging at least one component contained in a controlled environment enclosure, comprising the steps of:

bring a bag as described above in sealed communication with the enclosure,

bringing at least one component of the interior of the enclosure into the bag,

closing a compartment of the bag comprising the components, and detaching the first fold of the bag before the bottom of the other folds, and unfolding said fold, Advantageously, but optionally, the closure of the compartment is implemented by heat-sealing the wall.

The folds of the bag are detachably connected with at least one other fold, thereby keeping the folds of the bag together and keeping it compact. In addition, the bag can be unfolded fold by fold thanks to this detachable connection, to be able to deploy an additional band of the flexible body and thus obtain a new volume that can be filled with components, without the need for a rigid structure to support it.

In addition, the entire length of the bag can be gradually used to package components, which reduces the amount of waste generated by the use of such a bag.

DESCRIPTION OF THE FIGURES

Other characteristics, objects and advantages of the invention will emerge from the description which follows, which is purely illustrative and nonlimiting, and which should be read with reference to the appended drawings, in which:

FIGS. 1a to 1c, already described, show schematically the filling of a packaging bag by components stored in a controlled atmosphere according to the prior art.

Figure 2 schematically shows a complete view and a detail of a bag according to one embodiment of the invention.

FIGS. 3a and 3b schematically illustrate a first embodiment of a bag,

FIGS. 4a and 4b illustrate variants of another embodiment of a bag,

FIGS. 5a to 5c illustrate variants of another embodiment of a bag,

FIG. 6 illustrates another embodiment of a bag,

FIGS. 7a to 7c show variants of another embodiment of a bag.

FIG. 8 illustrates a bag according to one embodiment of the invention, mounted on a confined enclosure, Figures 9a to 9d show the implementation of a method of packaging components with a bag according to an embodiment of the invention. DETAILED DESCRIPTION OF AT LEAST ONE EMBODIMENT OF THE INVENTION

Referring to Figure 2 there is shown a bag 1 for packaging components from a confined area. The confined zone, represented in FIGS. 9a to 9d, is an enclosure 2 comprising an internal volume 20 whose atmosphere must not communicate with the atmosphere outside the enclosure.

For example the confined area may be an insulator, a clean room, etc.

The bag 1 comprises a flexible body 10, typically made of a plastic material such as polyethylene, or polyurethane. The flexible body comprises a mouth or opening of communication 12, and a side wall 13, also flexible. The side wall 13 is closed at a bottom 1 1. The volume defined by the flexible body 10, extending between the bottom and the communication opening 12 is an internal volume of the bag.

The bag 1 also comprises a junction device 14 with the enclosure 2. The junction device 14 advantageously comprises a rigid frame 140 mounted around the communication opening 12, and a door 141 closing the frame 140, the door 141 being movable relative to the frame to selectively close or release the communication opening, thereby allowing the passage of component to the interior of the bag.

Optionally, the junction device 14 may comprise a sheath (not shown) connecting the rigid frame 140 to the flexible body 10.

Advantageously, the chamber 2 similarly comprises a frame 21 and a door 22 movable relative to the frame 21 to selectively open or close access to the internal volume of the enclosure 20.

In order not to contaminate the atmosphere of the internal volume of the chamber with the external atmosphere, and conversely, the junction device 14 of the bag 1 on the one hand, and the frame 21 and the door 22 of the enclosure of on the other hand, are advantageously designed in accordance with WO 201 1/023906 (or other similar means already mentioned). As a result, the opening of the chamber is only performed concomitantly with the opening of the bag, so as to form a a sealed zone formed by the internal volume 20 of the enclosure and that of the bag 1, which eliminates the risk of cross-contamination between the outside atmosphere and the indoor atmosphere. In addition, the outer surface of the connecting device 14 is in sealing contact with that of the frame 21 and the door, for isolating these surfaces from the atmosphere inside the enclosure 2 and the bag 1.

The bag 1 typically has a longitudinal major dimension longer than its transverse dimension. The excess length in the longitudinal direction is as much potential volume available for the packaging of components as the use of the bag.

As shown in Figure 2, a portion of the side wall 13 disposed between the bottom 1 1 and the mouth 12 is folded accordion to store compactly this excess length. The folding accordion is made by folding strips 130 of the side wall against each other in parallel and alternating folds.

Advantageously, the strips 130 are all of the same length. Thus unfolding a fold always corresponds to the addition of a length identical to the bag 1, corresponding to twice the length of a band 130.

In the following is called fold 131 a portion of the side wall formed of two consecutive strips 130 facing each other, and fold line 132 the line of intersection of the two bands.

As can be seen in the close-up portion of FIG. 2, it can be seen that, according to the folding accordion, the folds can be counted in several ways: either a fold 131 is formed of two strips 130 facing each other at their inner face, a fold 131 'is formed of two bands facing one another at their outer face.

In this case, the following applies in the same way to both definitions of a fold. We therefore keep only the reference 131 to designate a fold according to one or the other definition. Nevertheless, for the sake of consistency, when several plies are designated for the same embodiment, the same definition must be applied for all the plies.

In order to maintain a limited bulk of the bag, while facilitating its use, the bag 1 comprises a reinforcement of at least one fold, and preferably several or all of the folds, to maintain all the folded strips 130 on each others. As described in more detail below, this reinforcement is achieved by temporarily connecting at least one fold 131 with at least one other fold.

Preferably, each fold is connected to at least one other fold. For example, each fold may be connected to at least one adjacent fold, or even to the two folds between which it is arranged, where appropriate. According to an embodiment described in more detail below with reference to Figures 3a to 6, each fold can also be connected to all other folds.

We will now describe the various embodiments of the possible connections.

Peelable solder connection

According to a first embodiment, shown in Figures 3a and 3b, at least two consecutive strips 130 may be welded together by a peelable weld 133, that is to say an area where the strips are releasably welded.

In Figure 3a, the strips welded together are facing their inner face.

In Figure 3b, the strips welded together are facing one another by their outer face.

It is possible to simultaneously perform a peelable weld of all the plies, in which case each ply is connected to all the other plies.

Connection via a dedicated connector

According to a second embodiment, represented in FIGS. 4a to 7c, the bag comprises, at the level of at least one fold 131, at least one connector 3 with another fold 131. Preferably, in order not to degrade the seal of the bag, the connector does not pass through a wall of the bag intended to be in contact with the components.

Advantageously, each fold 131 is connected to at least one other fold, preferably at least one adjacent fold, by a connector 3.

Thus the plies are all held together, without bulky holding means on the outside or inside the bag. In addition, in order to allow a progressive deployment of the folded bag by fold, all the connectors 3 are detachable, that is to say they allow a temporary joining of a fold with the adjacent folds or folds.

The connectors 3 may be the subject of several embodiments. Inserts and connecting member

A preferred embodiment of a connector 3 includes a yoke 30 attached to the outer surface of the fold 131. This embodiment is illustrated in Figures 4a to 6.

Alternatively, as shown in Figure 5c, the yoke 30 can be directly integrated in the fold. To do this, one part of each band forming the fold is welded to the part of the other strip lying opposite. This weld is a definitive weld. In this case, the area covered by the yoke 30 remains folded when the ply is detached from the other pleats, which slightly reduces the internal volume of the ply. On the other hand, it eliminates the need to bring additional pieces of material onto the fold.

In addition the bag 1 comprises a connecting member 31 of each yoke to the yokes of other folds, to maintain all the folds connected together. In addition, each fold is thus kept connected to the other folds by a structure independent of the other folds, formed by the connecting member 31, which makes it possible to form a fixed point for retaining the other folds when pulling on a fold for the detach from others.

The connecting member 31 may for example comprise a clamp holding the yokes together by clamping, or a hook extending through the inserts.

Alternatively, and preferably, the connecting member 31 comprises a through hole 310 formed in the thickness of each yoke. The through hole is arranged only in the thickness of the yoke 30, but not in the wall 13 of the bag to not put in communication the internal volume of the bag with the external atmosphere. In the case of Figure 5c, the orifice is arranged in the welded portion of the fold, so that the orifice passes through the wall 13 on either side, without causing communication between the internal volume of the bag and the outside.

The connecting member 31 also comprises at least one link 31 1 whose diameter is smaller than that of the openings of the inserts to be able to pass through the orifices and thus connect several inserts together, at the same time that it is thus connected to each of the inserts.

Of course, the variants of connecting members 31 are combinable with the embodiments of the inserts.

As described in more detail below, the detachable nature of the connection between two plies can be obtained in several ways:

Either the yoke can be detached from the wall 13 of the bag,

Either the yoke can be detached from the connecting member 31,

- Or the yoke can be separated into a portion attached to the wall 13 of the bag, and a portion attached to the connecting member.

Firstly, a detachable yoke 30 of the wall 13 of the bag can be implemented in various ways, some of which are illustrated in Figures 4a and 4b.

In the case where the inserts 30 are attached to the wall 13, each yoke 30 may for example be peelably welded to the wall 13, that is to say that it can be detached from the wall by a simple tension exercised on it.

Alternatively, each yoke 30 may be temporarily attached to the wall 13 by a detachable adhesive tape, or by mechanical means that can be detached by applying traction. Typically, the means described hereinafter with reference to FIGS. 7a, 7b and 7c (velvet-hook, snap-fastener or snap-fastener, etc.) may be applied to the attachment of the yoke to the wall 13. this case a yoke 30 has a first connecting element and the wall 13 has a second connecting element cooperating with the first element.

FIG. 4a shows an exemplary embodiment in which the inserts are removably attached to the wall by a detent device 32, and in FIG. 4b an embodiment in which the inserts are removably attached to the wall Velvet-hook type strips 32 attached to the wall 13 and the yoke, facing one another. In the second place, if the detachable connection is made by separating a yoke 30 from the connecting member 31, the yoke is then preferably permanently affixed to the wall 13 of the bag. This is the case of the yoke formed by welding two portions of strips of a fold, in Figure 5c.

Alternatively, in the case where the inserts 30 are reported, they can be welded (in a non-peelable manner) to the wall of the bag.

The detachment of a yoke from the connecting means 31 can be the subject of several variants.

For example, in FIG. 5a, in the case where the connecting member 31 is a clamp holding the inserts 30 integral, the clamping of the clamp can be adjusted to make it possible to disengage a yoke from the clamp by pulling on the wall 13.

Alternatively, in FIG. 5b, in the case where the fastening means comprises through orifices and a link 31 1, each yoke 30 may comprise one or more cutting lines 303, extending from the edge of the through orifice 310. at the edge of the yoke 30. A cutting line is a line of weakness that can open when tension is exerted on both sides of the line. This is for example a line along which micro-perforations are made to form a cutting primer. By pulling on the fold it is then possible to tear the cutting line and thus open the orifice 310 to separate the yoke 30 of the link 31 1.

Finally, finally, in the case where the yoke is detached in a portion 301 fixed to the wall and a portion 302 attached to the connecting member, this detachment may be a tear of the yoke or a separation along one (or more) cutting line 303 previously made. This is applicable whether the yoke is reported or integrally formed in the bag.

For example, as shown in FIG. 6, that the connecting member 31 comprises a clamp or a link passing through orifices, a cutting line 303 may be provided between a first portion 301 permanently attached to the wall 13, for example by being welded (non-peelable), glued, or fixed by any other means known to those skilled in the art, and a second portion 302 separable from the first. FIG. 5c also shows a cutting line 303 for separating a part 302 from the yoke attached to the connecting member of a part 301. As the part 301 is part of the zone of the strips welded between they, it closes the bag even after detachment of the portion 302 and thus retains its seal.

The yokes of the plies connected to a connecting member and / or interconnected by said member, allow to gather the folds of the bag in a compact manner, for example in a pre-established configuration. When an additional length of bag is desired, it is sufficient to pull on the first fold or on the bottom of the bag 1 1 to separate all or part of the corresponding yoke of the wall 13 and unfold the strips 130 of the fold.

Folded pleat connectors

According to another embodiment, the connectors 3 of a fold 131 are shaped to cooperate with the connectors 3 of an adjacent fold, the connectors being preferably arranged facing one another to cooperate.

The connectors 3 can be arranged on the inner surface or the outer surface of the strips 130, as long as they do not pass through the wall 13 of the bag, so as not to compromise its sealing.

This other embodiment can also be the subject of several variants.

In FIG. 7a, the connectors 3 of two adjacent folds form a velvet-hook connection device; a connector 3 comprises a zone 321 covered with loops forming the velvet, and the other connector comprises a zone 322 covered with hooks which hook the loops of the opposite zone 321.

In Figure 7b, the connectors 3 of two adjacent folds form an elastic latching device; a connector 3 may comprise a male element 331 and the other connector a female element 332 adapted to removably receive the male element. According to a particular embodiment, the male element and the female element form a snap button.

In FIG. 7c, the connectors 3 comprise adhesive strips 341 attached to the outside face of the side wall, on two strips 130 in look at each other, the adhesive strips being arranged opposite one another.

As shown in the figures, the folds are made on the entire circumference of the side wall 13 so as not to hinder the communication from the chamber 2 to the inside of the bag 1.

However, a fold may comprise a single connector 3, or a plurality distributed over the circumference of the side wall. Thus, according to an embodiment visible for example in FIG. 5b, each fold 131 comprises a single connector 3. According to an alternative embodiment represented in FIG. 6, each fold 131 comprises several connectors 3, for example two connectors 3.

For example, the side wall 13 may be formed of two panels 133 comprising lateral edges 134 and transverse edges 135, the panels being joined edge to edge at least by their lateral edges and a transverse edge. The other transverse edges may be free to form the communication opening 12 of the bag. Alternatively they can be welded together, and in this case the communication opening 12 can be made in one of the sections.

In this case, the two connectors of a fold are advantageously made on the same pan 133, preferably equidistant from the side edges of the pan. The connectors then form two distinct alignments.

In this case where the connectors are inserts 30, the connecting member 31 may comprise at least a first link 31 1 passing through orifices of a first alignment of inserts, and at least one second passing through orifices of a second alignment of inserts.

As a variant, it is also possible for inserts to be attached to the two panels 133, being arranged on the whole of the circumference of the wall 13.

The variants of the connectors are of course combinable with the variants concerning their number and their arrangement.

All the embodiments proposed above make it possible to stiffen the folds to maintain them in the folded position and / or to connect the folds to each other. temporarily, and selectively separate a fold from the others when an additional length of bag is desired.

Finally, with reference to FIG. 8, the bag 1 may further comprise at least one additional attachment means 15 disposed on an outer surface of the side wall 13 of the bag, advantageously facing the communication opening. 12.

This additional fastening means 15 may advantageously take the form of an additional insert permanently attached to the wall, that is to say not peelable. This additional yoke comprises at least one protruding portion relative to the side wall, to be hooked to another element. Optionally, this part may comprise a through hole 150 for the passage of a link 4.

This attachment means makes it possible in particular to grip the wall 13 facing the communication opening to keep it away from the communication opening 12. In fact, in the case where the bag is in communication with the enclosure 2 and that it is subjected to a pressure lower than the atmospheric pressure surrounding the enclosure, this pressure differential can tend to drive the bag into the enclosure.

In Figure 8, exerting tension on the attachment means 15 in a direction away from the communication opening 12 avoids this displacement of the bag. Optionally, the tension can be exerted on the attachment means by a system connected to the enclosure itself (shown schematically in the figure by a pulley system). Thus, the enclosure being stationary, the tension exerted on the bag is constant and does not require adjustment or intervention of an operator.

FIGS. 9a to 9d show a process for packaging components initially stored in the confined enclosure 2, in a bag 1 according to the preceding description.

In FIG. 9a, a bag 1 is fixed to the door 22 of the enclosure by its junction device 14, then, in FIG. 9b, the door 22 of the enclosure and the door 141 of the connection device of the bag are opened. to put in communication the internal volume of the bag with that of the enclosure. An operator can then transfer C components contained in the enclosure to the inside of the bag via open communication between the enclosure and the bag.

In FIG. 9c, a compartment 16 of the bag is closed, preferably by heat-sealing, to isolate the components in the compartment 16 in a sealed manner. The compartment 16 can then be detached from the rest of the bag. A new bottom of the bag is formed by closing the wall, for example by heat sealing the wall closing the compartment 16.

Then in Figure 9d, a fold is detached from the other folds to obtain an additional volume of sachet. The detached fold is preferably the first fold before the bottom 1 1 of the bag. This fold is unfolded to obtain an additional length of pouch equal to the length of two strips 130. Steps 9c to 9d can be reproduced with new components. Thus it has been proposed a bag that can be used for the successive packaging of several components contained in a confined space, while maintaining an excess storage length folded and maintained ergonomically and space-saving. The need for a rigid support structure is eliminated, and thus the amount of waste and the requirements for cleaning or sterilization between two successive bags.

Claims

1. Bag (1) for the sealed package of components, comprising:

a flexible body (10) defining an internal volume, comprising:

an opening (12) for communication, and

a side wall (13) comprising a plurality of strips (130) folded against each other, and

a junction device (14) which can selectively close or release the communication opening, and being shaped to be mounted on an enclosure to allow tight communication between an internal cavity of the enclosure and the internal volume of the bag,

the bag (1) being characterized in that at least one fold (131) formed of two strips

(130) facing each other is detachably connected to at least one other fold (131).

2. Bag (1) according to claim 1, wherein at least one strip (130) of a fold is detachably connected to at least one strip (130) lying opposite a peelable weld of these strips.

3. Bag (1) according to one of claims 1 or 2, wherein at least one fold

(131) has at least one connector (3) detachable with at least one other fold.

4. Bag (1) according to claim 3, wherein the detachable connector (3) comprises at least one yoke (30), and the bag further comprises at least one connecting member (31) of the inserts (30) corresponding to one or more plies (131).

5. Bag (1) according to claim 4, wherein the connecting member (31) comprises a through hole (310) formed in each yoke (30), and at least one shaped link to extend through the orifices yokes.

6. Bag (1) according to claim 5, wherein each yoke (30) is permanently attached to the wall or integrated into the wall, and comprises at least one cutting line extending from the through hole (310) to an edge of the yoke.

Bag (1) according to one of claims 4 or 5, wherein the yoke (30) is removably attached to the wall (13), being peelably welded to the wall, or comprising a temporary fixing means to the wall adapted to cooperate with a corresponding fixing means of the wall, the fixing means (32) comprising one of the following group:

detent device comprising two components disposed respectively on the yoke and the wall, facing each other, velvet-hook connection device arranged on the yoke and the wall, facing one of the other,

adhesive areas of the yoke and / or the wall, facing one another.

8. Sachet (1) according to one of claims 4 or 5, wherein the yoke (30) comprises a portion permanently attached (301) to the wall or integrated therewith, a detachable portion (302) attached to the connecting member, and a cutting line (303) extending between the two parts.

9. Sachet (1) according to one of claims 3 to 8, wherein at least one fold comprises a connector (3) adapted to cooperate with a connector (3) of a fold (131) adjacent.

The bag (1) according to claim 9, wherein the connectors (3) of two adjacent plies (131) comprise a detent device (331, 332) comprising two components respectively disposed on the outer surface of two strips, look at each other.

1 1. Bag (1) according to claim 9, wherein the connectors (3) of two adjacent plies comprise a velvet-hook connection device arranged on areas (321, 322) of the outer surface of two strips (130), in look at each other.

12. Sachet (1) according to claim 9, wherein the connectors (3) of two adjacent folds comprise adhesive strips (341) attached to the outer surface of two strips, facing one another.

13. Bag (1) according to one of the preceding claims, further comprising a yoke (30) attached to a side panel of the side wall (13) facing the communication opening (12), the yoke comprising the less a projecting portion to allow its grip.

A method of packaging at least one component contained in a controlled environment enclosure (2), comprising the steps of:

bringing a bag (1) according to one of the preceding claims in sealed communication with the enclosure (2),

bringing at least one component (C) from the inside of the enclosure into the bag,

closing a compartment (16) of the bag comprising the components (C), and detaching the first fold of the bag before the bottom (1 1) of the other folds (131), and unfolding said fold.

15. The packaging method according to claim 14, wherein the closure of the compartment is implemented by heat-sealing the wall (13).