In industrial manufacturing and equipment maintenance, the refurbishment and repair of metal parts is a common process. If the old paint film on the surface is not removed thoroughly, it will directly affect the quality and service life of subsequent coating - the remaining old coating can lead to a decrease in the adhesion of new paint, blistering and peeling of the coating, and even cause corrosion risks.
Case Details
1. Problem (Core Industrial Paint Stripping Pain Points)
Traditional acid/alkaline paint removers and common solvent strippers bring multiple efficiency, quality, safety and material damage troubles to machinery, auto, rail transit and hardware manufacturers:
- Ordinary paint strippers have weak vertical adhesion and severe dripping. Large integrated structural parts, pipelines and non-detachable equipment cannot be fully soaked; paint stripping efficiency drops sharply with incomplete film removal.
- Multi-layer composite coatings (anti-rust primer + intermediate paint + topcoat, two-component epoxy paint) feature tight adhesion. Conventional strippers lack deep penetration capacity; repeated coating and long soaking still leave residual paint film, requiring secondary polishing and rework.
- Most strong paint removers are highly corrosive with pungent heavy odor. They cause metal substrate etching, discoloration and dimensional loss; operators suffer respiratory and skin irritation during long-term operation.
- Many corrosive strippers contain acid, heavy metals or restricted volatile substances, failing RoHS and global environmental standards, triggering export compliance risks and high sewage treatment costs.
- Single-function strippers cannot match multiple paint types. Factories need to stock separate chemicals for nitro paint, alkyd paint and epoxy paint, raising inventory management costs.
- Flammable solvent-based paint removers create fire hazards in closed workshops and soaking tanks, requiring extra fire prevention investment.
- Disposable one-time use strippers consume large chemical volume and generate massive waste liquid, increasing long-term production expenditure.
Ruibao RSB-702 Neutral Paint Stripper is a recyclable neutral solvent compound product. It delivers powerful deep penetration for all mainstream coatings without metal corrosion, solving multi-layer paint removal difficulties while balancing workshop safety and environmental protection.
2. Material (Product Formula, Physical Indexes & Applicable Metal Substrates)
2.1 Core Raw Material Composition (Official MSDS Document)
RSB-702 is a two-phase neutral mixed stripper with layered liquid appearance:
- Modified substituted alkane: 60 ~ 75%
- Composite solvent oil: 5 ~ 8%
- Alcohol ether solvent: 3 ~ 10%
- Multi-functional additives: 3 ~ 10%
Biodegradable formula, non-flammable, classified as non-dangerous goods under EU CLP Regulation (EC) No 1272/2008; free of strong acid, strong alkali and heavy metals, equipped with built-in multi-metal anti-corrosion additives.
2.2 Applicable Metal Workpieces & Industries
Applicable base metals: Carbon steel, alloy steel, aluminum alloy, iron, cast metal, hardware structural parts
Cover application fields: Rail transit wheel axles, automobile & motorcycle parts, mechanical equipment, instrumentation, metal toys, metal molds
Compatible coating types: Oil-based paint, alkyd paint, amino baking paint, nitro paint, acrylic paint, partial low-temperature two-component epoxy paint
2.3 Physical & Chemical Parameters (Lab Test Standard)
| Test Item |
Standard Index |
| Appearance |
Two-phase liquid with floating upper layer & transparent lower layer |
| Odor |
Odorless / Low mild odor |
| Specific Gravity |
1.23 ~ 1.28 |
| Paint Stripping Rate |
≥90% |
| Acid Value |
≤0.08 |
| Corrosiveness |
Zero corrosion to all metal substrates |
2.4 Product Safety Attributes (MSDS Specification)
Non-combustible without explosion risk; only mild skin degreasing occurs under prolonged direct contact; low volatile components, low odor to reduce workshop air pollution.
3. Soil (Coating Layers That Can Be Fully Removed)
RSB-702 penetrates and delaminates all composite paint films rapidly:
- Single-layer topcoat: Nitro paint, acrylic paint, oil-based finish
- Multi-layer stacked coatings: Anti-rust primer + intermediate coating + decorative topcoat
- Thermosetting baking paint: Amino baking paint, alkyd industrial paint
- Partial low-temperature cured two-component epoxy coatings
- Aged, hardened, tightly bonded old paint film on mechanical metal surfaces
4. Cleaning Process (Standard Mass Production Paint Stripping Operation Flow)
4.1 Recommended Operation Method
Full immersion process (primary method); local brushing for non-detachable large structural workpieces
4.2 Standard Process Parameters
- Dilution Requirement: Use undiluted stock liquid only, no water mixing
- Operating Temperature: Ambient room temperature, no heating required
- Standard Soaking Time: 3 ~ 15 mins (extend duration for thick multi-layer paint)
4.3 Complete Post-Stripping Workflow
Workpiece full immersion / local brushing → paint film swelling & delamination → high-pressure water flushing / air gun blowing → wipe residual paint slag → anti-rust treatment for rust-prone metals
4.4 Tank Liquid Maintenance & Operation Rules
- Place workpieces separately without overlapping to ensure full liquid contact with coated surfaces;
- Recycle the tank liquid repeatedly; replenish new stock liquid when stripping efficiency declines; replace the whole tank if performance cannot recover after replenishment;
- Operators must wear full work uniforms, safety shoes and acid-alkali resistant latex gloves; maintain workshop full ventilation;
- Store sealed separately from strong acid, strong alkali and strong oxidants; avoid direct sunlight and high-temperature storage.
5. Test Standard (Physical, Material Safety & Environmental Compliance Criteria)
- Physical Performance Standard: Meet official appearance, specific gravity, acid value and ≥90% paint stripping rate indexes under normal temperature testing;
- Metal Anti-Corrosion Standard: No etching, discoloration, pitting or dimensional change on carbon steel, aluminum and iron after complete soaking cycle;
- Coating Removal Standard: Multi-layer paint film fully swells, peels off without residual coating after simple water flushing;
- Ecological Environmental Standard: Biodegradable components, low volatile odor, no strong acid/alkali heavy metal hazardous substances, meet industrial wastewater discharge regulations;
- Safety Classification Standard: Non-dangerous, non-flammable, low occupational skin & respiratory irritation risk;
- Waste Liquid Disposal Standard: Waste stripping liquid needs factory pre-treatment to reach emission standards, or delivered to qualified hazardous waste disposal institutions.
6. Result (Field Production Test Outcomes)
- Ultra-Fast Penetration & Stripping: Rapidly infiltrate multi-layer coatings within 3–15 mins; paint film swells and delaminates completely without stubborn residue, eliminating secondary polishing rework;
- Universal Coating Compatibility: One stripper fits all mainstream industrial paints, unify chemical procurement and reduce multiple product inventory;
- Low-Odor Neutral Safe Formula: No pungent irritating gas, greatly improve workshop operation environment; neutral formula protects all metal substrates from corrosion;
- Recyclable & Cost-Saving: Tank liquid can be reused multiple times by filtering paint slag, cut overall chemical consumption and waste liquid generation;
- Wide Scene Adaptability: Suitable for small precision hardware and large non-detachable mechanical structural parts via immersion or local brushing process;
- Low Environmental Governance Pressure: Biodegradable low-odor formula reduces sewage treatment burden and eliminates export RoHS compliance inspection risks;
- Fire-Safe Workshop Production: Non-flammable formula completely avoids fire hazards brought by traditional solvent paint removers.
7. Buyer Takeaway (Core Commercial Value for Manufacturing Factories)
- Solve Non-Detachable Large Part Stripping Pain: Good liquid adhesion with less dripping, realize local paint removal for integrated equipment without disassembly;
- Cut Rework & Scrap Loss: ≥90% stripping rate removes multi-layer paint thoroughly, no residual film leading to defective rework;
- Protect All Metal Workpieces: Neutral corrosion-free formula avoids substrate etching, save costs for metal part replacement;
- Reduce Chemical Inventory Costs: Single product matches nitro, alkyd, amino and partial epoxy paints, no need to purchase multiple special strippers;
- Lower Long-Term Production Cost: Reusable tank liquid extends service life, less chemical procurement and waste liquid treatment expense;
- Improve Workshop Staff Safety: Low-odor, non-flammable neutral formula reduce occupational health risks and fire prevention investment;
- Complete Stable Supply System: 25kg / 200kg sealed plastic drums, 2-year shelf life under cool dry ventilated sealed storage, standardized sun/rain-proof transportation.
MSDS Safety Emergency Handling Guide
- Skin Contact: Take off contaminated clothes immediately, rinse skin with plenty of clean water for 5 mins; seek medical care for persistent dryness or irritation;
- Eye Splashing: Flush eyes with clean water/saline for 5 mins, remove contact lenses before washing; consult doctors if redness and pain remain;
- Inhalation Exposure: Move to well-ventilated fresh air area and rest;
- Accidental Ingestion: Induce vomiting, rinse mouth and seek emergency medical treatment at once;
- Fire Control: Product itself is non-combustible; use foam or CO₂ fire extinguishers for burning plastic barrels, prohibit 1211 fire extinguishers; stand on upwind during fire disposal;
- Leak Treatment: Collect spilled liquid into sealed containers, block inflow into sewers; never mix polluted waste liquid with fresh stock liquid.
Storage & Transportation Specifications
- Packaging Specifications: 25kg plastic drum, 200kg plastic drum
- Shelf Life: 2 years under sealed, cool, dry and ventilated storage conditions
- Storage Rules: Tightly seal barrel lids, isolate from strong acid, alkali and oxidants; avoid long-term sunlight and high temperature;
- Transportation Requirements: Handle gently to prevent barrel damage; shield products from sunlight, rain and high temperature during transit;
- Waste Barrel Disposal: Dispose empty packaging per national & local environmental laws, forbidden random stacking and dumping.
