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Tips using Peach Sense film

TIPS ABOUT PEACH SENSE WET & DRY

 
Date: July 2014

 

1. Peach Sense film has a special matte surface which gives the velvety effect. In order to keep the surface at its best, it is recommended to work with clean hands or use protective gloves when handling it.

2. If you create some stains for manipulation with uncovered hands, you can eliminate the traces by wiping the area with clean cotton without any kind of chemical product.

3. It is suggested to avoid to laminate both sides in one step. If it is necessary, be sure that both sides are well chilled before make the stack.

4. When a both sides laminated with Peach Sense cardboards are varnished, it is suggested to stack them vertically and not horizontally. This to prevent varnish migration from one side to the other. To prevent this phenomenon it is also recommended to reduce the speed of the machine by 20-30% compared to the speed used normally with polypropylene film, to make sure that the varnish is completely dried.

5. During bookbinding of hard covers laminated with Peach Sense film, slipperiness problems may occur because higher coefficient of friction Peach Sense film/metal than with conventional films and this can cause scratches on the surface. It is therefore suggested to keep the guides of the machines perfectly clean and make some testing before the industrial production. It is also suggested to cover the rails with adhesive Teflon tape which greatly reduces friction. This should resolve the problem.

6. We do not recommend lamination of one side with Peach Sense film and the other with a gloss film for problems of additives in the Peach Sense side. This type of lamination can be done if you insert am unprinted cardboard between each of the laminated sheets.

7. We recommend to check bonding strength to ensure the film suitability to support and inks, in the start up of the lamination work. In order to know if the strength is enough, we suggest to make the following test: prepare a sample of 40mm and involve it to a weight of 500g (you can use a water bottle of 0,5liter). In case the sample support the weight without delamination it can be considered that the adhesion strength is enough, otherwise, the film can be delaminated by making slit, dry strokes etc. In this case, we recommend waiting

 

 

two or three days, to get better ink drying and repeat the test before moving on to subsequent.

8. For creasing and embossing process we recommend wait several days after lamination due to bonding strength increases over time.

9. The heating roll of lamination must be free of defects because these defects can be transmitted or copied to the metalized surface of the film.

10. For the manufacture of boxes, we only have experiance with Hot Melt adhesives, applied properly, and considering that during the periods when the ambient temperature is lower during winter time, the temperature of application of hot melt adhesives must be increased between 10 and 15°C. Other adhesives are not guaranteed and it is the end user who must ensure proper operation. In the case of water based acrylic adhesives, the amount and viscosity of these adhesives is important to guarantee a good bonding adhesion.

11. Stamping and varnishes process should not present any problem on this film. Any way, we recommend previous tests.

12. Printed support must be totally dry, it is recommended store printed support 2-3 days at 25 or 30°C before laminate, in order to guarantee a total dried of ink.

13. For any application of making books, folders, involving the use of cardboards of more than 250 g/m2 on cards, or hardcover and applications which use thick cardboard of more than 0,5mm, it is suggested to use the Peach Sense version coded as BMS035 which has an higher bonding power.

 
Specific tips for Peach Sense WET (code BMW017)

1. If it is allowed by machine, lamination roll temperature and lamination pressure must be increased to optimize penetration of the adhesive into support. Temperature must be between 60 and 90°C.

2. For dark backgrounds printings you need to use more water based adhesive, at least 30-50% for improve the adhesion and add curing crosslinking additive.

3. According with our experience, we recommend water based acrylic adhesives. For dark background printings we recommend 8 and 10g/m2 dried adhesive. We don’t have positive experience with solvent less adhesives.

 

 

 

Specific tips for Peach Sense DRY (code BMD035)
1. We recommend to use temperature between 110 and 130°C to laminate to laminate with dry version. With this film, the temperature of the heating roll can be increased from 10 to 20°C, due to this matt film is more resistant to temperature than conventional one.
Higher temperatures can be applied if the film does not shrink more than 1,5%.

2. It is strongly suggested to decrease the lamination speed to 30-50% to ensure enough adhesion strength of film to the support. This because the film is more thick and it keeps more time to melt EVA, by other hand, extra matt side is worse to transmits heat. Because these reasons also it is recommended to threat machine in any away to allow maximum involve angle on heating roll.

3. In order to guaranty good adhesion, film must shrink between 1 to 1,5% keeping soft unwinding tension.

4. Before lamination, it is strongly recommended to verify that the inks are perfectly dried even in the internal layers. It is possible to brush a little quantity of turpentine on printed cardboards and check if there are strips of un dried inks.

5. In order to reach a sufficient bonding power, it is suggested to wait some days after the lamination before proceeding with the further process like folding, creasing or shaping.

6. Finally, in case of critical lamination, e.g. very smooth papers printed with dark inks and creased, if the already mentioned tips have not helped and the film has still a poor bonding power, it is possible to try to use the Peach Sense coded as BMS035 which has a specific adhesive layer with an higher bonding power.

 

 

Lamtech srl

 

 

 

 

 

 

Note: The above mentioned information represent the best of our present knowledge, are given in good faith and are not binding. We disclaim any responsibility for the specific conditions of use of our products and defers the burden of appropriate checks to the end user.