FR2513215A1 - WORKING POUCH FOR PHOTOGRAPHIC LABORATORY - Google Patents

Abstract

THE POUCH 1 ACCORDING TO THE INVENTION IS EQUIPPED WITH ANTERIOR AND REAR WALLS AND AN OPENING 7. THIS POUCH MUST BE CAPABLE OF BEING CLOSED. TO SIMPLIFY THE MANUFACTURING, WALL 2 SHOWS A BAND 8 PROJECTING RELATED TO THE OPENING AND PROVIDED WITH A RECESS. ABOVE THE RECESS IS GLUED FROM THE EXTERIOR TO A SUPPORT 12 PRESENTING AN ADHESIVE AND SILICONE LAYER ON ITS REAR FACE. THANKS TO THIS, ONLY ONE OF THE TWO WALLS NEEDS TO BE SUBJECT TO TREATMENT. THE POUCH ACCORDING TO THE INVENTION CAN IN PARTICULAR BE USED AS A WORK POUCH FOR A PHOTOGRAPHIC LABORATORY.

Description

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1 -

  Work bag for photographic laboratory.

  The invention relates to a working pouch for

  photographic laboratory with a front wall

  a posterior wall, one of which is formed of a material having a sufficient rigidity, of

  preference of paper and the other of a transparent material

  rent, preferably a sheet of synthetic

  thinner, the wall formed of paper having at its outer edge a tear strip and being provided with an opening and a portion projecting over the opening and foldable for closing, this portion having on its face turned towards the other side an adhesive region carrying an adhesive again detachable and on its other side, to

  the corresponding place, a nonstick area.

  By the utility model DE 78 34 984, we know

  a pocket of the species indicated above In this

  ci, there is provided in the transparent wall, in the region of the folding part, a recess to which is applied from the outside a support so that the transparent wall has on its inner side an adhesive in the region of the recess The paper wall also has a recess in the opposite portion to the previous one, so that the paper wall

  do not come in contact with the adhesive before closing.

  Since the two recesses must cotncider

  exactly, they are only formed in one operation.

  after connecting the two walls Then only

  For the first closing operation, the strip is separated from the paper wall as a tear strip.

  opposite to the folding part of the trans-

  The adhesive interacts with the paper surface, which can lead to tearing problems when opening the pouch and thus makes it more difficult

a new closure.

  The purpose of the invention is to provide a pocket

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  -2- working for photographic laboratory of the species mentioned above whose manufacture and handling

be simplified.

  This problem is solved by a working bag for photographic laboratory in which, according to the invention, the wall having the folding portion

  is formed of the material having sufficient rigidity

  health and the wall formed of the transparent material is

  ends below the adhesive region.

  According to an advantageous embodiment of the invention, below the edge of the opening is disposed a thread of adhesive preferably activatable by pressure and / or by

  With this, if desired, and in particular

  to link after the end of the photographic work, one can

close the cover permanently.

  One embodiment of the invention will be described

  hereinafter, by way of non-limiting example, with reference

  FIG. 1 is a perspective view of the pocket from the front; FIG. 2 shows the pocket of FIG. 1 in the closed state, the tear strip being removed, and FIG. 3 shows the pocket of FIG. 1,

not closed, seen from behind.

  The pouch has an anterior wall 2 in

  pier having sufficient rigidity or stability

  100 to 150 g quality and a posterior wall

  3 of a thin transparent sheet of synthetic material such as a sheet of polyethylene, or parchment The two walls are welded or glued along their two side edges 4, 5 and the edge of

  -Fond 6 For this purpose, the front wall formed of pa-

  pier can be a material coated with polyethylene.

  On the front wall 2 can be affixed

  the usual data in the case of labor

  for photographic laboratories The front wall

  2 has a strip 8 adjacent to the opening 3 - 7, projecting relatively thereto and being able to be folded, around the edge of the opening, over the rear wall 3 to the strip 8 follows a strip of tear 9 which is connected to the strip 8 by a perforation line 10. The anterior wall has, in the strip 8 which projects relative to the opening 7, a

  recess 11 which is circular in the example of execu-

  However, on the outer face of the front wall 2, opposite the rear wall 3, there is provided a support 12 covering the recess 11 and having on its face facing the recess 11 an adhesive 13 which adheres to the paper of the anterior wall 2 and can be detached again from the material of which the posterior wall 3 is formed. In addition, the adhesive 13 can also be connected, in a releasable manner, to a layer which can be provided on the posterior face 14 of the support 12, in particular a silicone layer. The posterior face 14 of the support 12 is coated for this purpose with silicone so that the

  collage is prevented when superimposing several pochet-

your.

  In the embodiment described, the posterior wall

  3, which cooperates with the adhesive 13 when the pouch 1 is closed, is in the form of a sheet of synthetic material or parchment. Another material may also be chosen and the decisive point is that the side of the wall 3 which cooperates with the adhesive 13 is constituted such that when the adhesive 13 is removed from the surface of the wall 3, it does not come off the fibers of

  the surface so that it is possible to close the

chette.

  At a small distance from the opening 7 extends

  towards the entire opening, a zone 15 carrying

  an activatable adhesive by heat and / or pressure.

  In service, when you accept a film, you separate the

  Tear strip 9 and have the handset to the customer.

  The film is inserted into the pocket 1 Then the pouch is closed so that it can be reopened, by folding the tape 8 over the opening 7 and pressing the adhesive 13 against the outer face of the tape. posterior wall 3 At the photographic laboratory, the cover is opened and the film is removed

  the end of all photographic work, one can refer

  By addition, by activating the adhesive of zone 15 by means of pressure and / or heat, the opening of the pouch is closed for a long time so that the contents do not fall out.

  when returning to the final recipient.

  When the pouches not yet used are stacked, the surface provided with adhesive 13 always rests on the posterior face 14, coated with silicone, with a support 12 of a neighboring pouch. Thus, the bonding is preferably avoided. is a little larger than the recess 11, so that gluing is avoided, even when the pockets are not aligned at 100 o% under

stack form.

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Claims (2)

  1. Work package for photogra-   plate comprising an anterior wall and a posterior wall, one of which is formed of a material having sufficient rigidity, preferably of paper and the other of a transparent material, preferably a thinner synthetic sheet, the wall formed of paper having at its outer edge a   tear tape and being provided with an opening   ture and a part protruding over the   verture and folding for closure, this part having, on its side facing the other walls an adhesive region carrying an adhesive again detachable and on its other side, in the corresponding place, taie nonstick region, pouch characterized by the fact that the wall (2) having the folding part (8) is formed of the material having the sufficient rigidity and that the wall (3) formed of the transparent material is   terminates below the adhesive region (13).   2, bag according to claim 1, characterized   by the fact that below the edge of the opening is dis-   placed an adhesive thread (15) activatable by pressure and / or by the heat.