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What are the equipment and production capacity of a PVC thermal break extrusion line?

Time：

2020-04-23

[Product Function] The thermal break strip is the key component of stick‑in‑place insulated profiles. It acts as a “thermal bridge breaker” along the heat‑transfer path within the aluminum profile, reducing heat transfer at that location. At the same time, it serves as a structural connector between the two aluminum sections of the insulated profile; its integration unifies the three constituent parts into a single unit capable of bearing loads together. Unlike sealing strips, it is manufactured via mechanical rolling to form a new composite material and cannot be replaced individually. If replacement is necessary, the entire profile must be swapped out. The energy‑saving performance of PVC‑steel doors and windows stems from the combination of two distinct cross‑sections joined by an energy‑efficient thermal break strip—also known as a nylon strip—which…

[Product Features]

The thermal break strip is the key component of a thermal‑break profile. It serves as a “thermal bridge breaker” along the heat‑transfer path within the aluminum extrusion, thereby reducing heat transfer at that location. At the same time, it acts as a structural connector between the two aluminum sections of the profile, integrating the three constituent parts into a single unit that collectively bears loads. Unlike sealing strips, it is manufactured through mechanical rolling to form a new composite material and cannot be replaced individually; if replacement is necessary, the entire profile must be swapped out. The energy‑saving performance of uPVC windows and doors stems from the combination of two distinct cross‑sections joined by an energy‑efficient thermal break strip—also known as a nylon strip. Its primary function is to interrupt heat conduction, either preventing rapid heat transfer or moderating it. For this reason, the thermal break strip is also referred to as a PVC thermal break strip.

[Processing Equipment]

The PVC thermal break strip processing equipment is a PVC thermal break strip extrusion production line.

1. Feeder

2. Dryer

3. Extruder (65 mm screw, universal type)

4. Molds (comprising hot molds and cold molds)

5. Stainless Steel Sink (Lift-Style)

5. Automatic cutting (four cylinders)

Currently, this production line is highly mature and can be configured with equipment of varying capacities to meet diverse customer requirements. Common screw diameters are 55 mm and 65 mm, with hourly output ranging from 15 to 25 kg. The extrusion die consists of a heated section and a cooled section, and is designed—based on the product’s dimensions—to produce either two or four strands per pass, thereby enhancing both the machine’s efficiency and throughput. The line is equipped with an automatic cutting unit featuring pneumatic cylinder‑driven trimming, offering simplicity, convenience, and clean, even cuts.

Hebei Shuangda Rubber and Plastics Machinery Co., Ltd. is a modern enterprise that integrates research and development, manufacturing, and sales of complete sets of extrusion equipment for rubber, silicone, and plastics. The company’s main products include rubber extruders, rubber hose extrusion lines, three‑layer composite sealing strip extrusion lines, silicone sealing strip production lines, plastic sealing strip production lines, plastic profile production lines, plastic pipe production lines, elastomer extruders, and other extrusion equipment, as well as production machinery for engineering seals, automotive seals, wire and cable applications, air‑conditioning hoses, braided hoses, automotive hoses, waterstop strips, and related products.