Prior to Motion Design’s involvement, ARL relied on employees folding filter papers outside of work hours. To process their soil samples ARL requires many filter papers to be folded into a conical shape. Remove labour dependence, increase throughput, prevent Occupational Overuse Syndrome (OOS) for employees and reduce the potential for contamination. The secondary stations associated with K-machines (crossfold unit with knife) always use Classic rollers and hard PU.Ī PRODUCT OVERVIEW THAT COVERS OUR FOLDING ROLLERS AND SEGMENT FOLDING ROLLERS CAN BE FOUND HERE.Ravensdown Fertiliser Co-operative Ltd (ARL) Problem:Īutomating the process of folding round filter papers into a cone shape for use in a laboratory Key benefits: Under such circumstances, on account of the wear and tear, one would tend to use hard PU, along with a Classic or Extra Grip roller. These items are then scored or perforated. The secondary stations usually deal with 4-fold, 8-fold or 16-fold paper thicknesses. In such scenarios, it is usually necessary to perform the folding operations in a very precise manner, and at a high speed. This is a result of the higher-level grip.Įxperience has shown us that when it comes to most 1.st folding stations, the Extra Grip folding roller is used in conjunction with soft PU. if the situation involves letter folds or gate folds). Furthermore, in comparison with soft PU, the hard PU folding roller does not tend to produce double fold (e.g. This can, for example, be important in situations involving multiple zigzag folds. This results in a significantly ‘sharper and flatter fold’, in comparison with soft PU. Compared to soft PU, the ring features a smaller projection vis-à-vis the metal. Hard PU has a significantly higher life expectancy. Under such circumstances, hard PU would be significantly more advantageous. We would advise against the use of soft PU if the item is to be used in conjunction with glue, or if the situation involves freshly-printed products, since it is very difficult to clean the spongy and foamed material. However, it wears out a lot faster than hard PU. It is easier to adjust and it folds in a more precise manner. It touches the paper along an entire surface, and not just at a single point. The material is pressed when the paper is being transported. WHAT IS THE DIFFERENCE BETWEEN SOFT PU AND HARD PU?Ĭompared to hard PU, soft PU has a higher projection vis-à-vis the steel. colour: Natural colours, and it becomes a range of dark brown to black can only be pressed with the fingernail Hard PU can be spotted based on the following factors: colour: yellowish beige, and it becomes light brown Soft PU can be spotted based on the following factors: WHICH POLYURETHANE RINGS ARE PRESENT ON MY FOLDING ROLLER?īoth types of folding rollers (Classic and Extra Grip) can be equipped with polyurethane rings made of soft PU or hard PU. The benefits of Extra Grip folding rollers: A higher degree of folding accuracy, a lack of markings on sensitive papers and a low degree of static charge. This ensures that there is no overlapping of the steel segments. On account of the low degree of wear and tear suffered by the polyurethane rings, they last for a particularly long period of time.Įxtra Grip folding rollers contain about 30% more polyurethane rings. WE HAVE BEEN USING CLASSIC FOLDING ROLLERS.WHAT IS THE DIFFERENCE BETWEEN THIS ITEM AND AN EXTRA GRIP FOLDING ROLLER?Ĭlassic folding rollers are time-proven and inexpensive. This item contains a smaller amount of steel. The PU ring intersects on an upper and lowerįolding roller. This item contains a smaller amount of PU. The knurled metallic part intersects on an upper and From an optical point of view, you can differentiate between the two types as follows: There are two different types of folding rollers. To identify the version, please remove the upper folding pocket and note down the type of the folding roller. If you were satisfied with the fold-quality and the durability of the folding rollers, we would recommend replacing the folding rollers with the same version. WHICH TYPE OF ROLLER IS CURRENTLY INCLUDED IN MY MACHINE? WE WERE CONTENT WITH THE QUALITY AND DURABILITY OF OUR PREVIOUS FOLDING ROLLERS. Since this question can only be answered in connection with your specific form of utilisation, the following section contains information regarding folding rollers in general, information regarding the differences between the ‘Classic and ‘Extra Grip’ variants and information regarding whether one should select a soft PU variant or a hard PU variant. WHICH FOLDING ROLLER IS THE RIGHT ONE FOR US? WHAT WOULD YOU RECOMMEND?
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