Pedrini Automatic Resin Treatment Line
Natural stone carries fissures and voids: scrapping it is wasteful, yet using it untreated affects strength and appearance. Hengsheng runs the Italian Pedrini automatic resin line, infusing resin into micro-cracks and voids under vacuum to repair fissures, reinforce the surface and apply protection, returning material that would otherwise be downgraded to usable stock.
Core Strengths
- Vacuum infusion filling: resin penetrates micro-cracks and voids under vacuum with greater depth and uniformity than hand application, raising face strength after repair.
- Fissure repair and reinforcement: slabs with hidden cracks or fragile veining receive backing mesh reinforcement and crack filling, reducing breakage risk in handling and installation.
- Surface densification: resin-treated faces are denser, so polishing reaches stable gloss more easily with fewer pinholes and less orange peel.
- Continuous inline processing: drying, infusion, curing and cooling complete in one line, holding batch quality consistent regardless of operator technique.
Key Figures
Service Process
- Grading: slabs assessed by fissure, void and veining fragility to decide whether resin or reinforcement is needed.
- Cleaning and drying: faces cleaned and dried so resin penetrates the pores fully.
- Vacuum infusion: vacuum drawn, resin injected to fill micro-cracks and voids.
- Curing and cooling: resin cured and cooled to parameters, setting the face.
- Post-treatment check: fill saturation and face strength inspected before polishing.
Applications
- Marble and travertine slabs with natural fissures and voids
- Fragile slabs needing reinforcement before handling and installation
- Polished work demanding high gloss without pinholes
- Volume projects where raising yield controls cost
Sustainability & Certification
The line is fitted with organic vapour collection and treatment, with resin dosed by formulation to reduce residue; the plant also runs 95% water recycling and efficient lighting.
Resin treatment returns slabs that would otherwise be downgraded or scrapped, raising yield and reducing pressure on extraction; offcuts and slurry are still sorted for reuse.
Deep Selection Guide
Resin treatment is not concealing defects — it converts a natural flaw into usable material. What matters is whether the resin tone harmonises with the stone, whether filling is complete, and whether it will yellow later. State the acceptable degree of resin treatment and colour tolerance when ordering, and confirm the visual result on a sample; for travertine, decide whether voids are left expressed or filled. For exterior or high-temperature settings, confirm the resin's weathering and anti-yellowing performance so colour drift does not appear over time.
- Selection criteria：For Marble and travertine slabs with natural fissures and voids, fix the stone type and finish by position and traffic intensity first, then align colour and veining direction; Vacuum infusion filling is the criterion that follows.
- Specification & thickness：Take Core process (Vacuum impregnation) as the baseline for thickness and size, then adjust to the actual conditions of Fragile slabs needing reinforcement before handling and installation; where junctions, cut-outs or corners are involved, mark them on the fabrication drawing in advance to avoid cutting on site.
- Acceptance & records：Complete checks on Fissure repair and reinforcement: slabs with hidden cracks or fragile veining receive backing mesh reinforcement and crack filling, reducing breakage risk in handling and installation. before dispatch and keep the record; accept on site by numbering, so any dispute can be traced back to that batch and its test data.
- Sustainability：The line is fitted with organic vapour collection and treatment, with resin dosed by formulation to reduce residue; the plant also runs 95% water recycling and efficient lighting. Build this into the acceptance documents and align it with the green building requirements where the project sits.
On Pedrini Automatic Resin Treatment Line, Hengsheng manages the full chain from quarry-direct sourcing, smart manufacturing, global delivery and on-site installation. The advantage lies not in a single product but in connecting selection, fabrication, QC and delivery into an auditable loop, giving project teams clear assurance on programme, quality and compliance.
FAQ
- Will resin-treated slabs show colour difference or yellowing?
- Resin is tinted to the stone and harmonises with the face once cured; for exterior or high-temperature use, weathering-resistant and anti-yellowing formulations are selected and confirmed at sample stage to limit later discolouration.
- Do all slabs need resin treatment?
- No. Slabs are graded on arrival by fissure, void and veining fragility, and only those needing repair or reinforcement enter the resin line; dense material with no obvious defects goes straight to polishing.