The double-sided adhesive laminating film 4040D is an especially thin polyester film designed for laminating by hand (for small sizes) and with a laminator. Its extreme thinness makes it difficult to manually apply without imperfections, which is why it is primarily used with a machine. For small sized jobs, though, hand application is actually recommended (as a rule, with a squeegee-type applicator). The 4040D can be applied to practically any smooth surface. The adhesive strength of the film is 11 N (per FINAT/FTM 1). The DIN formats are cut from a flat sheet, which accounts for their extreme flatness – if they had been produced from a customary film roll, such flatness would never have been accomplished. The double-sided 4040D adhesive film, in contrast to the 4040 version, has release liner on both sides.
Application: Posters, layouts, photographs, blueprints or maps can be firmly attached to suitable surfaces with adhesive film, adhesive with non-woven paper centres or transfer film. All types of panels with smooth surfaces like CARDBOARD, KAPA BOARDS or PLASTIC SHEETS can serve as the substrate material. Please note: Alternatives to double-sided adhesive films or double-sided adhesive non-woven paper include SPRAY ADHESIVE, TRANSFER ADHESIVE, XYRON adhesive and laminating machines, standard ADHESIVE NON-WOVEN ADHESIVE or GUDY 870, and, finally, self-adhesive panels like, for example, KAPA FIX.
Processing: Working with the double-sided adhesive film by hand is done as follows: the film is mounted by applying it from one corner to the other and made secure and smooth with the help of a sqeegee-type applicator during which time the the release liner paper is simultaneously and gradually removed as required for exposing the adhesive. Before the PE film liner is removed at a sharp angle, any bubbles should be punctured with a NEEDLE and smoothed out.
The same procedure applies to all the Gudy products. Because, however, only one of their sides has a protective liner, more care must be taken when working on larger areas in order to prevent the adhesive side from sticking to places where it shouldn’t.
Applying your object to the prepared substrate requires a certain amount of dexterity because double-sided adhesive films are very clingy (like plastic wrap). Once the paper has been placed on the film, it must sit perfectly. Large folds or creases cannot be remedied or removed because the paper can no longer be separated from the film. Here too, you can work radially from the middle of a side outwards and do the necessary pressing with a soft brush or cloth.