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Structure and production process of lock type SPC stone plastic floor
Oct 11, 2018

◆The composition of the lock-type SPC stone plastic floor:


Floor composition: PVC resin powder, stone powder, plasticizer, stabilizer, carbon black, the main components are polyvinyl chloride and stone powder.

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◆Structure

From bottom to surface, it is composed of PVC base color film decorative paper and wear layer and UV coating.

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The lock type SPC stone plastic floor is a new environmentally-friendly floor developed based on high technology. It has zero formaldehyde, mildew proof, moisture proof, fireproof, insect proof and simple installation. SPC floor is extruded from the extruder with T-die to extrude the PVC substrate, and the three-roll or four-roll calender is used to respectively wear the PVC wear-resistant layer, PVC color film and PVC substrate, and heat-fit and emboss the product once. The process is simple, the fit is done by heat, and no glue is needed.

The lock-type SPC stone-plastic floor material uses an environmentally friendly formula and does not contain harmful substances such as heavy metals, phthalates, methanol, etc., and complies with EN14372, EN649-2011, IEC62321, and GB4085-83 standards. It is very popular in developed countries in Europe and America and in the Asia Pacific market.

With its excellent stability and durability, the stone-plastic floor not only solves the problem of moisture deformation and mildew of the solid wood floor, but also solves the formaldehyde problem of other decoration materials. It has a wide range of color patterns to choose from, suitable for indoor home improvement, hotels, hospitals, shopping malls and other public places.


Process for producing lock-type SPC stone-plastic floor:

  1. Mixing----Automatic metering according to the ratio of raw materials→High-speed mixer hot mixing (hot mixing temperature: 125°C, the function is to mix all kinds of materials evenly, remove the moisture in the material)→ Enter cold mixing (cool the material to prevent agglomeration and discoloration, Cold mixing temperature: 55 ° C) → mixing the material by cooling;

  2. Extrusion----Adding to the twin-screw extruder, heating and extruding → entering the sheet die extrusion molding, the formed sheet is subjected to four-roll calender, the substrate is thickened → the color film is applied → the wear layer is applied → the cooling → cutting;

  3. UV tempering----Surface UV→tempering (tempering hot water temperature: 80~120°C; cold water temperature: 10°C)

  4. Slitting and slotting----Slitting → Slotting, Trimming, Chamfering → Inspection → Packaging

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