Equipment Components: Single-screw extruder – Die – Cooling and shaping water tank – Belt traction machine – Winding machine
(1) Extrusion Section: For the production of profiles with small cross-sectional dimensions, such as thermal insulation strips, a single-screw extruder or co-extrusion is generally chosen for molding to avoid wasting production resources and energy. The selection of a single-screw extruder depends on two main factors: the size of the product cross-section and the required output. The larger the extrusion output, the larger the screw diameter; the larger the cross-sectional area (larger cross-sectional size) of the profile, the larger the screw diameter.
(2) Extrusion Die: The extrusion die is the main component for product molding. Its function is to continuously and uniformly transform the cylindrical melt provided by the extruder into a well-plasticized mold with a cross-section and geometric dimensions similar to the channel. After cooling and other processes, a high-performance profile product is obtained.
(3) Cooling and Shaping Section: A water tank and water circulation system are installed on the cooling and shaping platform. The water tank is made of stainless steel, and cooling is achieved through circulating water spray cooling. The shaping platform is equipped with a forward and backward movement device and left/right and height adjustment devices.
(4) Traction section: The traction machine is used to continuously and automatically pull the cooled and hardened sealing strip out from the machine head. It is a frequency converter.
(5) Rewinder section: Its core function is to achieve non-stop roll changing through "alternating operation of dual reels," while precisely controlling the winding tension and wire arrangement accuracy to ensure that the roll is neat and undamaged.
The characteristics of plastic fireproof expansion strip equipment are "targeted design based on the special raw materials, performance and compliance requirements of fireproof expansion strips", and the advantage is that these designs directly solve the industry's pain points of "difficulty in meeting standards, low efficiency, high cost and high risk" - it can not only ensure that the products meet fire protection standards, but also achieve efficient, compliant and flexible production, which is the core support for the large-scale and high-quality production of plastic fireproof expansion strips.
High-efficiency sealing: Isolating from the outside world and improving environmental comfort
This is the core value of sealing strips, achieving multiple layers of isolation by filling gaps:
Dustproof: Prevents outdoor dust and indoor particles from entering gaps (e.g., door and window sealing strips reduce floor dust accumulation, and car sealing strips prevent dust from entering the driver's cabin);
Waterproof: Blocks rainwater and dew from seeping in (e.g., building curtain wall sealing strips prevent rainwater from leaking into the room, and washing machine door seals prevent water leakage);
Sound insulation: Reduces airborne sound transmission (e.g., door and window sealing strips can reduce outdoor noise by 10-20 decibels, and car sealing strips reduce wind and road noise during driving);
Heat insulation/preservation: Reduces the exchange of hot and cold air (e.g., refrigerator door seals prevent cold air leakage, and door and window sealing strips reduce air conditioning/heating energy consumption, which is estimated to save 15%-20% on heating/cooling costs).
Easy Installation: Reduces construction and maintenance costs
Lightweight: Low material density, saving effort during handling and installation;
Easy to Cut: Can be cut to the required length with ordinary scissors, no professional tools required (e.g., DIY replacement of household door and window sealing strips);
Easy to Fix: Can be fixed via adhesive backing (with self-adhesive), slots, screws, etc., with high installation efficiency (e.g., appliance sealing strips are directly embedded in slots, no glue required).
Long-lasting and Durable: Reduces replacement frequency and lowers life cycle costs
Aging resistance and deformation resistance result in a long service life: Building door and window sealing strips can typically be used for 8-15 years, and automotive sealing strips can last for more than 10 years, far exceeding the lifespan of simple sealing materials such as sponge and felt strips (only 1-3 years);
No special maintenance is required daily, only periodic wiping of surface dust is needed, avoiding the labor and material costs of frequent replacements.
Widely Adaptable: Covers the needs of multiple fields
The flexibility of the material and shape of plastic sealing strips makes them adaptable to almost all scenarios requiring sealing.
