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- SPC stone plastic floor structure and production process
SPC stone plastic floor structure and production process
SPC stone plastic floor: European and American countries call it RVP, rigid plastic floor. SPC stone plastic floor is in the stage of active promotion and rapid development in domestic and foreign markets.
The composition of locking SPC stone plastic floor:
Ground ingredients: PVC resin powder, stone powder, plasticizer, stabilizer, carbon black, mainly PVC and stone powder.
Structure: It is composed of polyvinyl chloride-based layer color filter decorative paper and wear-resistant layer and UV shower coating in sequence from bottom to surface.
The lock-type SPC floor is a new type of environmentally friendly floor based on high-tech development. It has the characteristics of zero formaldehyde, mildew proof, moisture proof, fireproof, insect proof and simple installation. SPC floor is a product that extrudes PVC substrate by extruder combined with T-die, and uses three-roll or four-roll calender to heat and emboss PVC wear-resistant layer, PVC color film and PVC substrate at one time. , The process is simple, the lamination is done by heat, and no glue is required.
The locked-type SPC stone-plastic floor material adopts an environmentally friendly formula, does not contain heavy metals, phthalates, methanol and other harmful substances, and meets the standards of EN14372, EN649-2011, IEC62321, and GB4085-83. It is very popular in developed countries in Europe and America and the Asia-Pacific market.
With its excellent stability and durability, stone-plastic floor not only solves the problems of damp, deformation and mildew on solid wood floors, but also solves the formaldehyde problem of other decorative materials. There are many colors and patterns to choose from, suitable for indoor home decoration, hotels, hospitals, shopping malls and other public places.
The technological process of producing locked SPC floor:
Process step: mixing.
Automatic metering according to the ratio of raw materials → hot mixing by high-speed mixer (hot mixing temperature: 125°C, the function is to mix various materials evenly and remove moisture in the materials) → enter cold mixing (cooling materials, preventing agglomeration and discoloration, cold mixing Temperature: 55°C) → Cool and mix the material evenly;
Step 2: Extrusion.
Add twin-screw extruder, heat and extrude → enter the sheet die for extrusion molding.
The material adopts a four-roll calender, and the thickness of the base material is determined → pasted with color film → pasted with wear-resistant layer → cooled → cut;
Process three: UV tempering.
Surface UV → tempering (tempering hot water temperature: 80~120℃; cold water temperature: 10℃)
Step 4: Separate the grooves.
Cutting→grooving, trimming, chamfering→inspection→packaging.