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MEIJI BLANKET

 

MEIJI RUB.BER & CHEMICAL Co., Ltd is established in 1900 in Tokyo, Japan. We have produced the progressive Blanket and improved it with the printing companies. MEIJI BLANKET is the most popular blanket in the world, and many printing machine manufactures adopted our blanket.

1) MEIJI AIR BLANKET (compressible type)

Our Brand "MEIJI BLANKET" has been enjoying so good reputation from user that it is like the pronoun of compressible blanket in The World. We have succeeded in developing the MEIJI BLANKET matching the high-speed printing work through our ceaseless efforts exerted to incorporate the compressible layer fine and uniform in air cells.

  • The improvement in quality of rubber and the fine air cells; these further improve the stability, displaying an excellent effect on a high-speed printing.
  • The prevention of bulge makes it possible to obtain a beautiful printed matter.
  • The good absorption of shocks solves the problem of shock-marks and gear-marks.
  • The trouble of sink, traces of paper, and the like can be solved.
  • Durability against printing is increased, while the service life of printing plates is prolonged.

2) In case the printing image runs in one direction, causing an overlapping phenomenon (Slurring)

Cause

  • Ink Spreads too thickly
  • The pressure applied between the blanket cylinder and the impression cylinder is too high.
  • The plate cylinder pressure is too high for the blanket cylinder.
  • The blanket tension is weak, or the elongation is large.
  • Cylinder arrangement is not appropriate.
  • Ink accumulates on the blanket

Countermeasure

  • Adjust the amount of ink to balance it with water.
  • Reduce the pressure.
  • Remove some under-lays until an image gets out of shape faintly when it is transferred. Then, add under-lays so that proper printing pressure can be obtained.
  • Adjust the tension properly. Our Meiji Blanket with less elongation is recommended for use.
  • Make the cylinder arrangement appropriate.
  • Replace the ink by other ink with a better transferable property

3) In case the thickness of blanket reduces during use

(Sinking)

Cause

Countermeasure

*After a blanket is set, it causes sinking on all the surface temporarily, but it becomes stable soon. But the fabric may tear partially if the blanket is set too forcibly.

*Set the blanket carefully using a wench attached to the printing machine. Do not apply force at a time to the blanket by resting your weight on it or remodeling the wrench.

4) In case low spots are found on the printed surface

Cause

Countermeasure

* Under-layers are not smooth and flat.

*Be sure to use our blanket type "packing".

*The thickness of under-layers is below

the specified thickness.

*Use additional under-layers to make the thickness same as the specified thickness.

* A mass of ink or foreign matter sticks to

the imprison cylinder.

*Check the cylinder and clean its surface.

*The blanket surface is not smooth and flat, or its thickness is not uniform.

*Use our blanket excellent in smoothness and flatness with uniform thickness.

Since our blankets have been manufactured by a special production process and have passed a rigorous inspection:, the thickness is uniform and the surface is excellent in smoothness and flatness.

5. Trouble-Shooting for Claims on Blanket

1) In case ink does not spreads well on blanket (Glazing)

Cause

Countermeasure

*Talc is left on the rubber surface of the blanket

*Thoroughly clean the surface of the blanket with detergent.

*Hardened rubber liquid sticks to the blanket

*Wipe the blanket well with a piece of cloth dipped in hot water.

*Spray powder sticks to the blanket

*Thoroughly clean the blanket with water and "BLANKEEPER", and dry it completely.

Our Product, "BLANKEEPER", is recommended for use as a blanket detergent.

6) In case· paper sticks to the blanket during printing (Tack)

Cause

  • As the surface rubber of blanket absorbs ink vehicle and solvents, the blanket surface is softened and subject to the sticking of paper to it.
  • The blanket absorbs the detergent of inferior quality
  • The viscosity of ink is too strong.
  • As ink dries too fast, a tightening phenomenon is caused.
  • Ink spreads too thickly.
  • The printing pressure is too high.
  • The gripper does not work properly.

Countermeasure

  • Use a blanket excellent in oil resistance.
  • When using a new blanket, clean it with "BLANKERPEER". After cleaning , wipe off the detergent well and dry the blanket.
  • Lower the ink viscosity by use of diluents.
  • Reduce the ink drying speed.
  • Decrease the amount of ink to a proper level.
  • Adjust the printing pressure properly.
  • Adjust the gripper.

7) In case the halftone lacks clearness (Blurring)

Cause

  • Ink is emulsified.
  • The blanket hardness is low.
  • The printing pressure applied is too high. (The pressure between the plate cylinder and the blanket cylinder is too high.)
  • Ink piles up on the blanket surface. (Pilling is caused.)
  • The Ph value of etching solution is not p roper.
  • Water absorption is excessive.

Countermeasure

  • Clean the ink distributing system such as a plate cylinder, blanket cylinder, rollers, etc., and adjust the balance between ink and water.
  • Choose a blanket with a proper hardness. Our blanket with a 6000A is designed at a proper hardness respectively.
  • Adjust the printing pressure.
  • Increase the viscosity of ink.
  • Check the Ph value and adjust etching solution.
  • Adjust water absorption.

8) In case the rubber surface dents the fabric tears (Smashing)

Cause

  • Several sheets of paper are fed into the machine at a time, or a folded sheet of paper is inserted.

Countermeasure

  • When the dents are not many, perform backing, or use our "BLANKEEPER" to recover the dents.
  • When there are many dents or the rubber surface tears, re lace the blanket with a new blanket.
  • Remove the blanket and wait for its recovery from dent depending upon the degree of denting.
  • As our blankets "9700A" and "940A- II" have superior elasticity to those 'produced by other manufacturers, they can stand to a considerable degree even if not a few sheets of paper are folded and inserted into the machine.

9) In case a solid image becomes uneven

Cause

  • The printing pressure is insufficient.
  • The blanket rubber is hardened due to its long use.
  • The fluidity of ink is insufficient.
  • The ink is emulsified.
  • Ink does not penetrate uniformly due to the improper sizing of paper (a method to prevent ink blotting).

Countermeasure

  • Add the under-layers to make the printing.
  • Replace the blanket with a new one.
  • Adjust the ink fluidity properly. (Do not use softer ink because such ink may cause a swimming phenomenon.
  • Wash the cylinder and adjust the balance between the ink and water.
  • Replace the paper with well-sized paper.

 

10) In case the blanket surface becomes blistered

Cause

Countermeasure

* Ink, solvent and others absorbed from the small pinholes produced on the blanket rubber surface during printing penetrate the inside fabric.

* Replace the blanket.

11) Separation of plies .................. the blanket looks like ripples as seen from the side

Cause

Countermeasure

* The solvent permeates between the blanket fabric and rubber.

* Replace the blanket if printing is influenced by it.

Coating the edge of blanket with sealing lacquer before use so that ink, detergent or lubricating oil may not penetrate can prevent ply separation.

12) Swelling ........................ flowing and thickening of dots and spots on the printed surface

Cause

  • The rubber surface a wells up due to the excessive use of a strong solvent or glazing preventing agent.

Countermeasure

  • The selection of a good detergent and glazing-preventing agent is important. Use our "BLANKEEPER" for cleaning a blanket. The blanket should be dried well after cleaned.

13) Spots (Hickies) on the printing surface

Cause

  • Fuzz, paper dust or small pieces of ink stick to the plate cylinder or blanket cylinder.

Countermeasure

  • Be sure to always keep clean the blanket and ink roller.