N-CS series is sheet type cleaning materials which removes stains from molding die for semiconductor encapsulation. With higher cleaning performance, it can reduce the time to clean-up molding die, compared with conventional cleaning compounds.

Realize rapid mold cleaning! You can clean even a heavy mold without detaching and attaching molds, which improves work safety and significantly reduce the number of cleaning processes.

N-CS series is sheet type cleaning materials which removes stains from molding die for semiconductor encapsulation. With higher cleaning performance, it can reduce the time to clean-up molding die, compared with conventional cleaning compounds.

Complete removal of rubber residue and gas stains that stick to a mold is required in order to maintain the quality of molded rubber products. However, cleaning molds with a solvent, blasting material, or brush has problems: it cannot remove stains sufficiently and it requires additional processes and time other than cleaning, such as cooling and disassembling molds.
The mold cleaning sheets in the QM Series that we developed can clean molds by simply sandwiching them between molds and heating them. They not only shorten the cleaning time but also boost productivity and ensure quality.

• N-CS series can reduce the time to clean-up molding die.
• N-CS provides good solution for burrs on surface of molding die, stains from gas and blocking of air vent.
• As N-CS series are environment safety materials, there is less noxious fumes, contamination and corrosion of molding die after cleaning.

Example of how our cleaning sheets reduce the required time in a mold:

Save time and ensure safety! You can clean molds without removing them from a molding machine.

The conventional mold cleaning method includes numerous processes other than cleaning, such as cooling and removing a mold before cleaning, and attaching and warming a mold after cleaning, which are labor- and time-consuming.
Our mold cleaning sheets in the QM Series are cleaning materials composed of thermosetting synthetic rubber. The cleaning agent contained in the sheets permeates and dissolves stains, and the adhesive force of the synthetic rubber removes the stain components. Our cleaning sheets do not require the disassembly of a mold for cleaning. Moreover, rubber residue and gas stains sticking to the mold can be removed in the same process as in the molding process: they are sandwiched between the molds equipped to the molding machine and heated.

Cleaning Mechanism of Mold Cleaning Sheets

Improve safely in mold cleaning processes

The blast cleaning method, where stains sticking to the surface of molds are removed by colliding blast materials (granular materials) to them, has problems: it may deteriorate the quality of molded products, such as making scratches on the mold surface due to the blast materials and scattering blast material. Our mold cleaning sheets remove stains by adhering them to the surface of the sheets, which prevents mold deterioration caused by cleaning.

N-CS W type -High filling performance for small-sized cavity

• N-CS W type completely fills cavity of mold die without air gap.
• N-CS W type is suitable for molding die with small cavity for small-sized semiconductor, diodes and mini transistor.
• N-CS W type is designed in a way that cavity is not blocked when the sheet is set on the mold die at any position.
• With N-CS W type, the air inside cavity can completely escape to outside and can remove off stains from the entire cavity.

Cleaning Performance

Tentative data after 300 shot of continuous molding with our green compounds

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