Extruded pvc gloss profile are common items in both daily life and industrial industries. They have a wide range of uses and can be used to produce soft and hard items, such as furniture accessories, brackets, pipes, machine parts, protective products, and even clothing. This proves the widespread applicability of PVC.
There are many production processes for PVC profiles, such as extrusion, injection molding, molding, blow molding, rotary molding, casting, dip molding, etc. The extrusion process is further divided into vacuum molding, cold top (hard top molding), soft hard (dual color) co extrusion molding, etc.
Let’s talk about the differences between PVC cold top extrusion process and extrusion process?
If high productivity is required and there are no special requirements on the surface of the product, most people choose to vacuum form (mold) and vacuum inside. If the surface mirror effect of the product or high filling profile and pipe extrusion are required, cold top (hard top) molding is generally chosen. However, the production efficiency of hard top molding is relatively low, and the extrusion speed is relatively slow.
The advantage is that the surface of the product is bright and smooth, and high filling materials can be used.
Hard top molding involves directly ejecting materials from the screw head of the mold in the shape of the mold. Generally, after the mold is ejected, the product is cooled by water. Vacuum forming, on the other hand, generally has a certain stretching ratio from the mouth mold, so the material is required to have relatively higher toughness and strength, and the addition of fillers is also relatively less used by extruded pvc gloss profile.
PVC cold top hard top extrusion processing is a commonly used extruded pvc gloss profile production method for producing PVC high calcium pipes, PVC high calcium hard profiles, etc. PVC high calcium pipe cold top extrusion is also known as internal pressure extrusion method, which directly cools and shapes in the machine head without the need for shaping molds, and the production speed is relatively slow. The production process is to directly immerse the PVC material in the water tank or spray water for cooling after being discharged from the head mold, so that the PVC material can quickly cool down from the mold outlet and achieve the effect of cooling and shaping. The products processed by PVC cold top hard top extrusion method have a brighter appearance and good glossiness.
PVC cold roofing material or cold extruded material is a new type of material used for building roof waterproofing, which has advantages such as light weight, high strength, convenient construction, and good waterproofing effect. This material can be used at room temperature without heating, and it solidifies quickly, saving construction time and costs.
The main component of PVC cold top material or cold extruded material is polyvinyl chloride, which is processed by adding auxiliary components such as fillers, plasticizers, stabilizers, etc. This material has good water resistance, acid and alkali resistance, and UV resistance.
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