Lubricants & Slips
Polyvel masterbatches a wide variety of additives that modify the surface of the resin to reduce the coefficient of friction. The additives used include:
These masterbatches are used by injection molders, film processors and compounders to add surface lubrication and mold release properties directly into the resin pellet feed without release sprays or pre-compounded resins. This class of masterbatches can also serve as a process aid. In the case of molybdenum disulfide in nylon, the active ingredient will promote the growth of a fine crystalline structure through nucleation, raising the heat distortion temperature.
For detailed product information and technical data on lubricating masterbatches, choose a specific Polyvel product below. For information on our PLA lubricants please visit our PLA masterbatch page.
Product: RE20 & RO20
Industry: Film/Sheet Manufacturing, Injection Molding
Function: Erucamide and oleamide based release aids for polyolefin and TPE (thermoplastic elastomer) processing
RE20 & RO20 Slip Masterbatches
Polyvel’s RE- (erucamide) and RO- (oleamide) series of slip additive masterbatches for film are:
The high coefficient of friction of LDPE, LLDPE & PP film contributes to adhesion to film or metal surfaces in production. Low erucamide or oleamide levels decrease the film coefficient of friction and reduce or eliminate sticking.
When using these masterbatches, the new coefficient of friction will be a function of both bloom time and letdown.
Product: RM40 & RM70 series
Industry: Film/Sheet Manufacturing, Injection Molding
Function: MoS2-based internal lubricant for most Nylon grades
Molybdenum Disulfide Masterbatches
Polyvel is the leading supplier of molybdenum disulfide (MoS2) masterbatches for internal lubrication of nylon films and injection-molded parts.
Polyvel’s molybdenum disulfide (MoS2) masterbatches enable injection molders to incorporate the benefits and lubricating properties of MoS2 into their molded nylon parts without purchasing costly pre-compounded MoS2 modified resins.
MoS2 is an internal lubricant for nylon compounds. It reduces or eliminates mold drag during molding and acts as a mold release. Post molding component assembly is made easier because of the self-lubricating properties.
Typical physical properties:
Header | Header | PA-6RM40 | PA-6,6RM40Z | PA-6,6RM70 |
|---|---|---|---|---|
MoS2 | % | 40 | 40 | 70 |
Pellet form | Cell | Dustless, black | Dustless, black | Dustless, black |
Specific grav. | gm/cc | 2.64 | 2.64 | 3.40 |
Softening pt | °C | 220 | 250 | 107 |
Use level | % | 4.0 – 6.0 | 4.0 – 6.0 | 2.5 - 3.5 |
Process | Cell | Injection molding Sheet, Profile extr. | Injection molding Sheet Profile extr. | Injection molding, Compounding |
When using these masterbatches, the new coefficient of friction will be a function of both bloom time and letdown.
Product: RZ40
Industry: Film/Sheet Manufacturing, Injection Molding
Function: Zinc stearate-based release aid for high impact polystyrene (HIPS), ABS, Nylon, and PBT.
Zinc Stearate Masterbatch
Polyvel’s RZ40 release aid masterbatch contains zinc stearate and is used in injection molding high impact polystyrene, ABS, nylon, and PBT. Polyvel RZ40 functions at low levels to reduce adhesion between mold surface and polymer. Polyvel offers zinc stearate masterbatches for other polymer applications including: polypropylene; polyethylene and others upon request.
Typical physical properties:
Recommended Use Levels (%) | |
|---|---|
High impact polystyrene (HIPS) | 1-2 |
ABS | 1-2 |
Nylon | 1-2 |
PBT | 1-2 |
Polyvel RZ40 is not recommended for use in crystal styrene if clarity is an issue.
Typical Physical Properties:
Physical Form | Translucent pellet |
Additive | Zinc stearate |
% Active Additive | 40% |
Softening Point | 94°C |
Product: Silicone-based aids
Industry: Film/Sheet Manufacturing, Injection Molding
Function: Masterbatches for polystyrene, Nylon, PP, and PE containing silicone
Silicone Masterbatches
Polyvel silicone processing aid and mold release masterbatches are comprised of polydimethylsilicone* fluid dispersed in polyethylene, polypropylene, nylon, high impact polystyrene resin, acetal copolymers and others upon request.
Custom formulating is available on request if another silicone viscosity is needed.
Typical Process and Property Benefits:
Process | Property |
|---|---|
Reduced cycle time | Smoother surface |
Lower injection pressure | Lower molded-in stress |
Increased flow | Reduced warping |
Eliminate manually applied mold release | Reduced cost |
Reduced breakage when ejecting parts | Reduced cost |
Typical Concentrate Product Properties:
Property | Unit | CM-S01 | CM-N02 | CM-E02 | CM-P03 |
|---|---|---|---|---|---|
Carrier resin | Cell | polystyrene | nylon | polyethylene | polypropylene |
Additive | *12,500 cS | silicone | silicone | silicone | silicone |
Loading | % | 15 | 15 | 15 | 15 |
Color | Cell | natural | natural | natural | natural |
Pellet count | pellets/gm | 50 +/- 5 | 50 +/- 5 | 50 +/- 5 | 40 +/- 5 |
Letdown | % | 0.5 – 1.0 | 0.5 – 1.0 | 0.5 – 1.0 | 0.5 – 1.0 |
Regulatory Status
Silicone fluid 12,500 cS meets the requirements of the FDA regulation "Code of Federal Regulations 21 CFR” concerning food contact applications when used in accordance with sections 175.105; 175.300; 176.170; 176.180; 1350; 177.1520 or 181.28.
For more information, or to receive a sample, please contact us.
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