90 Rubber seal strip extruder

Model XJ-75 XJ-90 XJ-120 XJ-150 Screw Diameter (mm) 75 90 120 150 Length-to-Diameter Ratio 20:1 20:1 20:1 20:1 Motor Power (kW) 30 55 110 132 Screw Speed (r/min) 30–65 30–60 30–50 30–50 Production Capacity (kg/h) 80–180 100–300 180–540 500–750 Applications Suitable for extruding rubber compounds such as EPDM, natural rubber, nitrile rubber, butyl rubber, and reclaimed rubber. It is used to produce composite sealing strips for building doors and windows, single-extruded sealing strips, as well as various dense and foamed rubber products in strip, rod, tube, or sheet forms for applications in construction, electrical appliances, machinery, water conservancy, and other industries. Working Stages The process consists of four stages: In the first stage, the machine receives feed material, conveying and compacting the compounded rubber; in the second stage, the rubber compound is heated and plasticized into a flowable mass; during the third stage, the extruder mixes and thermally homogenizes the compounded rubber; and in the fourth stage, pressure is built up to force the compounded rubber through the die. For hot-feed extruders, the second and third stages are provided by a pre-heated open mill. Cold-Feed Equipment Operation and Maintenance 1. Before use, the hardened gear reducer should be filled with 25–30 kg of lubricant (referencing the oil level indicator). Use gear oil in summer and No. 45 mechanical oil in winter. Regular oil changes can extend the service life of the reducer. 2. The fixed cover of cold-feed equipment should be opened every 1–2 months for routine maintenance, including cleaning the feed system, adjusting the clearance between the copper knife and the feed roller, and ensuring proper bearing alignment. Failure to do so may result in rubber leakage. Additionally, apply grease to the cold-feed gears at each shift. 3. Prior to starting up, calibrate the die diameter and tighten the flange bolts and securing components. 4. Operating temperature should be maintained between 40°C and 70°C. Temperatures that are too low can damage the machine, while excessively high temperatures may cause rubber vulcanization (over-curing), leading to equipment failure and impaired operation. 5. Before shutting down, ensure all rubber has been completely extruded from the barrel and screw, then cool the barrel and screw using circulating water until they reach room temperature. Otherwise, this could affect subsequent operations. 6. Winter operating precautions: Before freezing conditions set in, add antifreeze to the circulating water to prevent ice formation and potential equipment damage.

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Classification:

Rubber, rubber and plastic extrusion line

Business Hotline:

400-0319-386

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90 Rubber seal strip extruder

Model number	XJ-75	XJ-90	XJ-120	XJ-150
Screw diameter (mm)	75	90	120	150
Length-diameter ratio	20:1	20:1	20:1	20:1
Motor power (kw)	30	55	110	132
Screw speed r/min	30-65	30-60	30-50	30-50
Yield kg/h	80-180	100-300	180-540	500-750

Use

Suitable for extruded rubber (EPDM, natural, butyl green, butyl, regeneration), used for building doors and Windows sealing strip, automotive sealing strip composite strip, single extrusion strip production and construction, electrical appliances, machinery, water conservancy and other different shapes of strip, strip, tube, plate and other dense and foamed rubber products.

Working stage

The work is divided into four stages: one stage, the machine must accept the feeding, conveying and compacting of the compound; In the second stage, the rubber material must be heated and plasticized to make it a movable block material; In the third stage, the extruder must mix and heat homogenize the compound; In the fourth stage, pressure is built up to force the compound through the die. For a hot feed extruder, the second and third stages are provided by a preheated smelter.

Use and maintenance of cold feeding equipment

1 hard gear surface reducer before use need to add 25kg-30kg oil (based on the oil label), add gear oil in summer, add 45 mechanical oil in winter, regular change can prolong the service life of the reducer.

2. Open the fixed cover of cold feeding regularly for 1-2 months/time, and maintain the feeding regularly. Adjust the gap between the copper knife and the feeding roll in the roller bearing, otherwise there will be glue leakage.

Before starting, calibrate the caliber die and tighten the Harvard flange and fastener.

4 Boot operating temperature between 40℃-70℃, the temperature is too low easy to damage the machine, the temperature is too high prone to vulcanization of raw rubber (cooked rubber), resulting in damage to the machine can not work normally.

5. Before shutdown, the glue in the barrel screw should be extruded clean, and the temperature of the barrel screw should be reduced to the indoor temperature with circulating water, otherwise it will affect the next use.

6 Precautions for use in winter: Antifreeze should be added to circulating water before icing to avoid damage to equipment caused by freezing and icing.