NAC Machines

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Shooting and Clearance of Mechanical Faults which cause Paper Cup side wall defects.

Shaping Dislocation of Cup Wall

♦ Cause: There is dislocation on the left and right before cup wall shaping in paper cup machines.

♦Method of shooting: ♦ Adjust the position of the left and right locating stop rods and loosen the fastening screw, gently knock the locating stop rods inwards or outwards so as to keep the positions of the left and right locating stop rods nearly the same. While adjusting the locating stop rods, you should adjust the left and right push rods correspondingly so as to make the cup wall paper just be pushed to the place of the locating stop rod.

♦ The cup wall is adhered not firmly, discontinuously of Yellows Cause 1: The temperature of the ironing bar is set improperly. The ironing temperatures for the papers of different thickness and place of origin are not the same completely. The customer should try to find it out by himself. Generally speaking, yellowing adhesion indicates the temperature is improper. The improper temperature lies in the following two aspects:

♦ ♦ a. The temperature is on the low side. Because the temperature is on the low side, the thermo fusible film has not melted and the adhesiveness is not strong so that the cup wall can not be adhered firmly.

♦ ♦ b. The temperature is on the high side. Because the temperature is on the high side, the thermo fusible film has over melted and the cooling time after adhesion is not enough and it can not solidify fully so that the cup wall can not be adhered firmly.

♦ The adjustment of temperature can be finished on the temperature control meter. Find the temperature control meter which is marked with “Adhering Temperature Controller” press the “+” key, the digit will increase from small to big, press the “-“ key, the digit will decrease from big to small. The pressed digit will be the set temperature; the digit displayed on the meter is the actual heating temperature (which is always close to the set temperature).

♦ ♦ b. The temperature is on the high side. Because the temperature is on the high side, the thermo fusible film has over melted and the cooling time after adhesion is not enough and it can not solidify fully so that the cup wall can not be adhered firmly.

♦ Cause 2: The pressure of the iron bar is regulated improperly. The adhering degree is affected not only by temperature but also by pressure. Only when the temperature and the pressure are both maintained to the best position can the adhering effect be best. The regulating method of pressure. Loosening the locking screw, gently knock the left and right regulating plates to regulate the pressure of the ironing bar.

♦ Cause 3: The relative position of the ironing bar and the shaping mould is adjusted improperly, or there is partial gap when the ironing bar wholly touches the leather packing on the shaping mould at the paper cup forming machine.

♦ ♦ 1. Loosen the locking screw and swing the base body so as to make the ironing bar be basically parallel with the leather packing in machine.

♦ ♦ 2. Turn the paper cup machine with the handle to make the ironing bar go down to just touch the leather packing. Check the ironing bar and the leather packing whether there is partial gap between them. If yes, you can adopt the method of placing paper ups under the leather packing or adhering the temperature resistant adhesive tape onto the leather packing to eliminate the partial gap. After the above method of adjustment is adopted, the following effects can be reached.

1. The adhered place doesn’t yellow.

2. When the adhered place is torn open, all the adhered parts fluff.

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Technical Information

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