Lubricant G60 is a PVC processing lubricant used to control friction between PVC compounds, processing equipment, and finished surfaces during extrusion, injection molding, or other forming operations. In many commercial formulations, G60 is positioned as an internal and external lubricant, meaning it can support melt flow inside the compound while also reducing sticking at metal processing surfaces. However, the exact chemical composition, softening behavior, dosage, and performance profile of “G60” can vary by supplier, so I recommend confirming the product’s technical data sheet before approving it for production.
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At Shitong, I treat G60 selection as a formulation and process-matching decision rather than a simple product substitution. The correct choice depends on the PVC resin, stabilizer system, filler loading, processing temperature, equipment design, and required surface finish. This article explains what G60 does, where it is commonly used, and which technical and commercial questions B2B buyers should ask before placing an order.
PVC has limited thermal stability and can develop high friction during processing if the lubrication balance is not suitable. A lubricant helps regulate the interaction between PVC particles, additives, metal surfaces, and the developing melt. G60 may therefore influence fusion behavior, torque, melt release, surface appearance, and the stability of continuous production.
Internal lubrication mainly supports movement between PVC polymer particles and within the melt. This can help the compound reach a more uniform flow condition and may reduce excessive resistance during processing. If internal lubrication is too strong or used at an unsuitable dosage, it can delay fusion or affect mechanical performance, so the formulation must be evaluated as a complete system.
External lubrication focuses more on reducing adhesion between the PVC compound and metal surfaces such as barrels, screws, dies, and molds. This function can support cleaner release and reduce the risk of deposits or surface defects. Excessive external lubrication may also create poor fusion, plate-out, weld-line weakness, or inconsistent appearance, which is why balanced use is important.
G60 is generally considered for PVC applications where stable processing, controlled friction, and acceptable surface quality are required. Typical use areas include rigid PVC profiles, pipes, fittings, sheets, panels, and injection-molded components. The suitability of a specific G60 grade should be verified through laboratory trials or controlled production testing because the same product may perform differently across equipment and formulations.
Rigid PVC profiles require a stable balance between fusion, die release, dimensional control, and surface appearance. G60 may be used in window profiles, door profiles, construction trims, edge profiles, and decorative sections. In these applications, I recommend checking die pressure, melt temperature, surface gloss, weld quality, and any evidence of lubricant migration during extended extrusion.
Pipe and fitting compounds often contain stabilizers, impact modifiers, processing aids, pigments, and mineral fillers. A lubricant such as G60 may help manage friction and improve release through the die or mold. For pressure or structural products, lubricant selection must not be separated from fusion and mechanical testing, because processing ease alone does not confirm final product performance.
In PVC sheets and panels, the lubricant system can affect calendering or extrusion behavior, surface smoothness, release, and appearance. G60 may be considered when the processor needs a controlled balance between melt flow and metal release. Buyers should compare the result at the intended filler level, color system, and thickness rather than relying only on a general product description.
Injection molding requires attention to filling, demolding, weld lines, cycle consistency, and mold deposits. G60 may help reduce friction and support release, but the correct level depends on the machine, mold design, residence time, and compound formulation. A short molding trial should examine both first-shot quality and repeated-cycle cleanliness.
G60 is most commonly evaluated in rigid or semi-rigid PVC systems, but compatibility is formulation-specific. The result may change when the compound contains high levels of calcium carbonate, impact modifier, acrylic processing aid, pigment, stabilizer, or another lubricant. I therefore recommend reviewing the entire additive package before changing the lubricant type or dosage.
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For flexible PVC, the requirements can be different because plasticizers significantly affect flow, migration, surface behavior, and fusion. A G60 grade designed for rigid PVC should not automatically be transferred to flexible PVC without testing. The supplier should confirm the intended material scope and provide handling, storage, and compatibility information where available.
A product name such as G60 is not sufficient for technical approval. I advise buyers to request a current technical data sheet, safety data sheet, certificate of analysis where applicable, packaging details, and a recommended application range. The most useful specifications normally include physical form, color or appearance, melting or softening range, acid value or saponification information when relevant, moisture, bulk density, and recommended dosage.
| Parameter | Why It Matters | Buyer Question |
|---|---|---|
| Physical form | Affects feeding, blending, dust control, and handling | Is the material supplied as powder, flake, or granule? |
| Thermal behavior | Influences release, fusion, and processing stability | What is the softening or melting range? |
| Recommended dosage | Provides a starting point for formulation trials | What dosage range is suitable for our PVC system? |
| Moisture and consistency | Supports repeatable feeding and batch quality | What incoming inspection limits are used? |
As a practical development reference, PVC lubricant trials are often discussed in phr, meaning parts per hundred parts of resin. A processor may begin with a controlled screening range such as 0.3–2.0 phr, but this is only a trial framework and not a universal recommendation for G60. Actual dosage should be confirmed through torque, fusion, surface, release, and mechanical evaluations.
I recommend beginning with a clear production objective: easier die release, lower processing torque, improved surface appearance, reduced deposits, or more consistent fusion. Next, I would record the current formulation, resin K-value or grade, filler percentage, stabilizer type, equipment configuration, screw design, and normal processing window. This information allows the supplier to propose a more relevant sample and avoids comparing products under uncontrolled conditions.
Run a blank or current-lubricant reference before testing G60. Then evaluate at least two or three dosage levels while keeping the other additives unchanged. For PVC extrusion, a practical starting process window may be around 160–210°C depending on the compound and equipment, but the actual setpoints must follow the processor’s formulation and thermal-stability requirements.
During the trial, record torque, output, melt pressure, die appearance, fusion behavior, surface gloss, color stability, and deposit formation. For injection molding, also review filling behavior, demolding, cycle repeatability, and mold cleanliness. A single successful sample run is not enough evidence for scale-up; I prefer confirming performance across repeated batches or an extended production period.
At Shitong, I support B2B buyers by connecting lubricant selection with the real processing application. We can discuss whether the requirement is primarily internal lubrication, external release, or a balanced function for a specific PVC compound. Our technical communication should cover the intended application, packaging, documentation, sample evaluation, and commercial supply requirements without treating a general grade name as a substitute for testing.
Before requesting a quotation, buyers should prepare the target application, annual or monthly demand, preferred packaging, destination market, current formulation limitations, and required delivery schedule. For example, a buyer may need 25 kg bags for trial work and larger shipment planning after approval, but packaging and minimum order quantities must be confirmed for each project. Lead time can also depend on production scheduling, order quantity, export documentation, and destination requirements.
Lubricant G60 may be a suitable choice when you need balanced internal and external lubrication for PVC processing, particularly in rigid profiles, pipes, fittings, sheets, panels, or molded parts. The correct answer depends on your formulation, equipment, processing window, and performance target rather than on the G60 designation alone. I recommend confirming the technical data, requesting a representative sample, and comparing it against your current lubricant under controlled conditions.
For the next step, send Shitong your PVC application, resin and filler information, current lubricant system, processing method, target output, and purchasing requirements. I can then help define a practical evaluation plan and identify the documentation and sample quantity needed for technical approval. This approach gives procurement and production teams a clearer basis for deciding whether G60 fits their process and supply program.
Contact us to discuss your requirements of Lubricant G60. Our experienced sales team can help you identify the options that best suit your needs.
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