DE9200302U1 - Device for packing photo works - Google Patents

Description

GLAWE, DELFS ₁ MOLL & PARTNER PATENT ATTORNEYS

ANNOYED REPRESENTATIVES BEFORE THE EUROPEAN PATENT OFFICE

RICHARD GLAWE, Dr.-Ing. (1952-1985)

KLAUS DELFS, Dipl.-Ing., Hamburg

WALTER MOLL, Dipl.-Phys. Dr. rar. nat, Munich

ULRICH MENGDEHL, Dipl.-Chem. Dr. rer. nat., Hamburg

HEINRICH NIEBUHR, Dipl.-Phys. Dr. phil. habil., Hamburg

ULRICH GLAWE, Dipl.-Phys. Dr. rer. nat., Munich

Albin Spitzke KG BERNHARD MERKAU, Dipl.-Phys., Munich

(GmbH Sc Co) ,

Hamburg PO Box 26 01 62 PO Box 25 70

Liebherrstrasse 20 Rothenbaumchaussee

8000 Munich 26 2000 Hamburg 13

Phone (089) 22 46 65 Phone (040) 4 10 20

Fax (089) 22 39 38 Fax (040) 45 89

Tel. 5 22 505 Tel. 17 403 156

Teletex403156=SPEC

HAMBURG

&rgr; 14922/91 D/te (#79)

Device for packing photo works

The invention relates to a device for packaging photographic works in customer bags with adhesive closure.

Retailers, as customers of a photo lab, use so-called order bags to send photo orders to a lab, which are referred to here as customer bags or simply as bags and which have a closure flap that can be closed using an adhesive. The lab then returns the photo work to the customer in the same bags. It can happen that the adhesive has lost its sealing security as a result of previous use or as a result of contamination.

Thanks to the invention, the security of the closure can be restored by providing a device for heating the adhesive glue in the device for packaging photographic works. The impaired adhesive strength of the adhesive glue can thus be increased so that it is activated even if the adhesive layer is partially destroyed or covered by dirt.

DRESDNER BANK AG HAMBURG 04 030 448 OC (3LZ 200 500 00) · POSTORO HAH ¹ JUPi ^7S 07-200 (BLZ 200 100 20) * TELEGRAMMES: SPECHTZIES

that sufficient sealing security is achieved. This also applies if the adhesive is actually only intended for use at ambient temperature. This applies in particular to adhesives that are made from a permanently adhesive hot melt.

If the adhesive closure requires two adhesive layers that must come into contact with each other, it is generally sufficient to heat only one of these two layers.

If the packaging device contains a conveyor for transporting the bags step by step, it is advisable to provide a heated surface in a station where the bags are stationary in the area where the bag parts containing the adhesive are located. Guide devices, pressure stamps or blow nozzles can be provided to ensure sufficient contact between the adhesive points and the heated surface. Heating can also be carried out using warm air or radiation instead.

The heating power is designed for a short stay of the bags in the heating area. If the stay time becomes longer as a result of a fault, this could pose a risk to the bags or the bag contents. To avoid this, according to the invention, a device for removing the bag or the endangered part of the bag from the heating area can be provided, which is equipped with a control device that responds to a fault signal. In principle, it is irrelevant how the fault signal is generated. It is preferably derived from the machine being at a standstill or from a temperature sensor in the area of the endangered part of the bag.

The invention is explained in more detail below with reference to the drawing, which schematically illustrates an embodiment. They show:

Fig. 1 is a partial perspective view of the device

and
Fig. 2 a cross section.

Lying on the table 1, the bag 2 is moved forward step by step in the chain direction by a conveyor chain 3, whereby it is held on the chain by means of clamps 4. The bag has two surfaces 5, 6 provided with adhesive glue, the latter being attached to the closure flap 7 and coming to rest on the other when the closure flap is closed in the direction of the arrow (Fig. 1). After the photographic work has been inserted into the bag, it is closed in station A. It then moves to station B.

At the point where the folded closure flap lies on the adhesive surface 5, a heating surface 8 is embedded in the table 1. Above this there is a stamp 10 which presses the part of the bag containing the adhesive surfaces 5, 6 against the heating surface 8, which causes the adhesive surface 5, 6 to heat up and thereby activates the adhesive.

In the table 1 there is a stamp 9 which can be pushed up in the event of a fault in order to protect the pocket from continuous heating, as shown in Fig. 2. For this purpose, a drive (not shown) is provided for the stamp 9, which is preferably switched on automatically in response to a fault signal.

Claims (3)

Protection claims 1. Device for packaging photographic work in customer bags (2) with adhesive closure (5, 6), characterized in that it has a device (8) for heating the adhesive glue points (5, 6). 2. Device according to claim 1, characterized in that in a standstill station of a conveyor (3) that moves the pockets (2) step by step, in the location area of the adhesive surface (5 and/or 6) containing the adhesive, a heated surface (8) and a pressing device (10) are provided. 3. Device according to claim 1 or 2, characterized in that a device (9) for removing the pocket or a pocket part from the heating area with a control device responsive to a fault signal is provided.