RCS 620 | Rubber Cleaning Sheets

Harmonization Code : 4005.91.00.00 |   Compounded rubber, unvulcanized, in primary forms or in plates, sheets or strip: Plates, sheets, and strip
Main features
  • No leadframe or preheat
  • Excellent effectiveness
  • For cavities and air vents

Product Description

CHEMLINQ RCS 620 is a rubber cleaning sheet,  used for the thorough cleaning of thermosetting transfer mold. RCS 620 displays exceptional reliability and is used for semiconductor applications. Due to it is flexible and versatile nature it can be used in a wide range of semiconductor packages. It doesn't require preheating or leadframe and has excellent releasing properties, regardless of package size. It has been successfully used in micropackages and it is the main reason it has been developed.

CHEMLINQ RCS 620 is mainly used to clean mold cavities, air vents, cavities gates and the mold surface in a single step. Its fast cure allows for a very clean and efficient cleaning process with short and one-step cycles. With almost nonexistent odor and excellent pressure resistance, it is an efficient and vfm solution for cleaning tiny mold cavities in a simple and effective way. It has a mild alkaline pH and is not water soluble.

Product Family
RCS620  
10 mm
5
230 mm

Catalog Product

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Packaging
TDS, SDS & Technical documents

Technical Specifications

General Properties
Color
Color
The color
 White
Specific Gravity
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.

For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
 1.1 to 1.3
Shelf Life
Shelf Life
Shelf life is the amount of time after manufacturing that a product is guaranteed to retain its properties.

It differs vastly per product and it is based on temperature and storage conditions.

The properties can be guaranteed for the temperature and time range indicated on the TDS since those are the ones tested to be the best for the product.
Shelf Life @ 5°C 365 days
Other Properties
Shots 3 - 6
Curing Conditions
Curing Schedule
Curing Schedule
Curing schedule is the time and temperature required for a mixed material to fully cure. While this applies to materials that cure with heat, there are also other materials that can be cured with UV.

Even though some materials can cure on ambient temperatures, others will require elevated temperature conditions to properly cure.

There are various curing schedules depending on the material type and application. For heat curing, the most common ones are Snap cure, Low temperature cure, Step cure and Staged cure.

Recommended cure type, schedule, time and temperature can always be found on the Technical data sheets.
Cure Time 2 - 5 min
Mold Temperature 175 /- 5 °C

Additional Information

 

Instructions

  • Place strips on the mold. Strip quantity depends on the mold dimension.
  • Clamp the mold and compress to fill all the cavities
  • Recommended cure time for 170°C is 2-5minutes. Cure time depends on the mold temperature.
  • Do not clamp with excessive pressure or cure too much (ie more than 10 minutes). Release properties might be affected.
  • Repeat until you achieve the required cleaning result. Typically 3 to 6 shots are requires, depending on the mold temperature.

 

Recommended Application Setting

RCS 620 / 880

Mold Pressure

1600 – 1800 psi or 

50 – 120 tons 

Mold Temperature

150 – 185 °C

Curing Time

150 – 600 seconds

No of Shots

4 to 8 shots 

 

Storage and packaging

These rubber sheets should be kept in room temperature. Their shelf life in these storage conditions is 9months.

They are packaged in PE bags and come in 10Kg (net) boxes. The exact width is not stated since the sheets can be arrayed for the application and width is adjusted to the box size to accommodate the net weight.

Use RCS620 within 48 hours after opening the bag. Excessive moisture may affect the performance.

 

Warning

It is recommended to use the sheets in a well ventilated area. Your skin should not come in contact with them when the rubber is hot and you should avoid storing them at temperatures above 30°C.