一． Basic Product Information

Q1: What is the ASFROM AEM-450 Double Taper Sheet Extruder?

A1: The ASFROM AEM-450 Double Taper Sheet Extruder is an auxiliary rubber & plastic extruding sheeting machine matched with kneader mixers. It adopts double-taper converging screw to realize secondary forced plasticization and conveying of materials, and cooperates with adjustable clearance cooling rollers to continuously press mixed agglomerates into uniform rubber or plastic sheets. It is suitable for automatic mass production of high-viscosity materials such as rubber, EVA, PVC and color masterbatch, serving as standard downstream forming equipment for rubber & plastic mixing production lines.

Q2: What are the standard capacity and matched kneader specification of AEM-450 Double Taper Sheet Extruder?

A2:The standard plastic capacity is 2-2.8 tons per hour. It is standardly matched with 2 sets of 110L ASFROM kneader mixers. The standard die baffle width is about 500mm, and customized non-standard width is available per customers’ production line demands.

Q3: What parameters are covered in the full technical specification of AEM-450 Double Taper Sheet Extruder?

A3:The specifications cover seven core items: screw system, roller system, driving motor, speed regulation range, temperature control matching, roller adjustment dimension and transmission components. Core parameter details:

1. Screw: Big head diameter 450mm, screw speed 2.1~31RPM; extruder main motor 30KW-6P
2. Roller: Diameter 355mm / working length 700mm, adjustable clearance 0.5~6mm, roller lift height ≥200mm; roller speed 2.5~26RPM, line speed 2.6~28.9m/min; sheeter motor 30KW-4P
3. Temperature control support: Standard equipped with 3 sets of 9KW oil heating machines for segmented heating of screw, material trough and roller
4. Transmission & electric parts: Hard tooth surface gear; Shenzhen Ambit inverter; Sino-foreign joint brand PLC & touch screen; French Schneider low-voltage electric components

2. อุตสาหกรรมและวัสดุที่เหมาะสำหรับการใช้งาน

Q4: What raw materials can be processed by AEM-450 Double Taper Sheet Extruder?

A4: It is applicable to all kinds of high-viscosity materials after kneading mixing: EVA, PVC, PE foaming materials, all types of rubber raw materials, black color masterbatch, color masterbatch, printing ink, high-filler chemical powder and rubber-plastic composite materials.

Q5: What finished products are mainly manufactured with AEM-450 Double Taper Sheet Extruder?

A5:It covers semi-finished sheets for the whole rubber and plastic industrial chain: EVA/PVC/PE foaming shoe compound sheet, rubber sole blank sheet, rubber sponge sheet, tire tread compound sheet, sports ball rubber sheet, rubber sealing ring blank, rubber tube blank sheet, shock-absorbing rubber sheet, color masterbatch base sheet, automotive rubber-plastic component blank and chemical mixed rubber sheet.

三. Special Knowledge of Output & Open Mixer Comparison

Q6: Does AEM-450 Double Taper Sheet Extruder have higher output than traditional two roll open mixer?

A6:Its production efficiency is remarkably higher than open mixer. AEM-450 realizes continuous automatic sheet output at 2~2.8 tons per hour. Traditional 24/26 inch open mixer adopts intermittent manual rubber folding operation, with stable single machine capacity of only about 1 ton per hour. The machine eliminates manual folding and material transfer processes, raising comprehensive capacity by 2~3 times.

Q7: Can one set of AEM-450 Double Taper Sheet Extruder replace two two roll open mixers?

A7: It can fully replace two standard 24-inch two roll open mixers under mass continuous rubber mixing conditions. In terms of capacity, one extruder equals the total output of two open mixers. For labor, two open mixers need two operators while the extruder only requires one attendant, supporting unattended automatic linkage with kneader. In process, kneaded compound can be fed directly to produce sheets with consistent thickness without fluctuation. Limitation: It cannot replace the flexible manual operation advantages of open mixers for small batch sampling, frequent light color formula switching and thorough cleaning.

Q8: Is AEM-450 Double Taper Sheet Extruder only applicable to mass production of black materials?

A8:This statement is inaccurate. Mass production of black carbon black filled compounds is its optimal scenario instead of the only applicable material. 1. For long-term fixed mass production of black tire compound, conveyor belt rubber and black masterbatch, the screw retains little residual material without color contamination to reach peak efficiency. 2. The machine can normally process light-colored materials including EVA foam, transparent PVC, light sealing rubber and color masterbatch. 3. Disadvantage for light materials: The complex internal structure of screw and barrel takes much longer to clean during color switching than open mixer, and frequent switching between light and dark materials easily causes cross-contamination. Mass light-color production lines can solve contamination via full disassembly cleaning and special purging compound, while open mixers are prioritized for small-batch light-color production.

Q9: How to distinguish and select between double taper sheet extruder and traditional two roll open mixer?

A9: Choose AEM-450 Double Taper Sheet Extruder: Matched with kneader unit, ton-level mass single batch, long-term fixed black/dark formula, automatic labor-saving production, demand for long-term stable sheet thickness; Choose traditional two roll open mixer: Small batch trial sampling, frequent light/color formula switching, need flexible manual rubber adjustment, limited equipment budget, production lines with multiple daily color changes.

Q10: What is the complete standard operation process of AEM-450 Double Taper Sheet Extruder?

A10:Six-step standardized operation procedure, seamlessly linked with ASFROM kneader production lines:

1. Before Startup: Oil heating machines preheat, roller clearance and screw speed parameters preset, machine on standby;
2. Feeding: Kneaded agglomerated rubber compound is fed into the feeding trough;
3. Secondary Plasticization: Double taper screw conveys and shears materials forcibly for further homogenization;
4. Die Extrusion: Uniform molten material extrudes continuously from the die;
5. Roller Sheeting & Cooling: Materials pass through hollow cooling rollers with adjustable clearance to be pressed into standard-thickness sheets with synchronous temperature setting;
6. Continuous Discharge: Sheets are conveyed at constant speed to the next process for cyclic continuous production.

4. โครงสร้างและส่วนประกอบของเครื่อง

Q11: What are the 9 core components of the complete AEM-450 Double Taper Sheet Extruder?

A11:9 modular core components in total:

1. Double Taper Screw Extrusion System;
2. Hollow Cooling Sheeting Roller Assembly;
3. Oil Heating Machine Temperature Control System;
4. Main Hard-Tooth-Surface Transmission System;
5. Roller Lifting & Gap Adjusting Device;
6. Feeding Barrel Assembly;
7. Pneumatic Adjustment System;
8. Complete Electrical Control System & Drive Motors;
9. Frame & Safety Protection Assembly

Q12: What are the structure and processing advantages of AEM-450 double taper screw?

A12:It adopts 450mm big head double-taper single-head variable-pitch variable-depth converging structure, forged integrally from 38CrMoAl round steel with precision finishing molding and surface nitriding wear-resistant treatment. The converging taper structure strengthens material extrusion and plasticization without dead angle or residual material. It features abrasion and corrosion resistance, stable conveying for high-viscosity compound and extended service life.

Q13:What are the structure and advantages of AEM-450 sheeting roller?

A13: The roller is made of chilled alloy cast iron with hollow structure and built-in cooling water channel for circulating temperature control. Dimension: diameter 355mm, effective working length 700mm, infinitely adjustable clearance 0.5~6mm, maximum roller lift height ≥200mm. The roller body is anti-deformation, wear-resistant and corrosion-resistant with uniform cooling to accurately control sheet thickness. The lifting structure facilitates machine cleaning, maintenance and threading operation.

Q14: What is the working principle of the heating & cooling temperature control system of AEM-450?

A14:It is standardly equipped with 3 sets of independent 9KW oil heating machines, with split pipelines separately connected to screw, material trough and roller. Thermal oil circulates for segmented constant temperature heating, matched with roller water channel cooling. Built-in temperature sensors collect real-time data, and the electric control system adjusts temperature automatically in linkage to stabilize material plasticization temperature and guarantee uniform physical properties of sheets.

Q15: What is the function of roller lifting & gap adjusting device of AEM-450?

A15: Pneumatic drive lifts the whole roller set with maximum lift height ≥200mm. It supports stepless adjustment of roller clearance from 0.5~6mm to precisely control sheet thickness. After lifting, the roller gap is fully exposed for convenient manual residual glue cleaning, roller surface maintenance and material threading, greatly reducing machine maintenance difficulty.

Q16: How does the dust and residual material prevention design of AEM-450 reduce color cross-contamination risk?

A16:The double-taper converging screw has no dead space to fully push all materials to rollers, and smooth barrel inner wall reduces material adhesion. The whole roller set can be lifted to avoid material accumulation in gaps. Wide-opening feeding trough supports fast cleaning. Residual material and cross-contamination risk are extremely low during fixed mass dark-color production. Special purging compound can eliminate residues further for light-color production.

Q17: What are the configuration features of the main transmission system of AEM-450?

A17: It consists of two independent transmission units for extrusion screw and sheeting roller respectively, both adopting hard-tooth-surface reducer and ratio gearbox. Extruder main motor:30KW-6P; sheeter motor:30KW-4P. Hardened gears feature strong bearing capacity, high transmission efficiency, low operation noise and long-term stable durability. The screw and roller are equipped with independent Ambit inverters for separate speed regulation to adapt to different production speeds.

Q18: What is the function of the pneumatic control system of AEM-450?

A18:Double-acting cylinder drives roller lifting and lowering to complete gap adjustment and machine opening for cleaning. It links with automatic production line logic to remotely control roller lifting and closing. When material jamming occurs, one-click roller lifting releases pressure to protect rollers and transmission parts and reduce failure loss.

Q19: What is the standard configuration of the electrical control system of AEM-450?

A19:Frequency conversion unit adopts Shenzhen Ambit inverter; HMI PLC touch screen is Sino-foreign joint venture brand; full set of low-voltage contactors, circuit breakers and relays are French Schneider brand. Built-in temperature acquisition module can store multiple sets of process parameters including screw speed, roller speed and temperature control, supporting signal linkage with upstream kneader mixer for fully automatic unattended operation.

五.Core Functions & Features of Equipment

Q20: What core advantages does AEM-450 Double Taper Sheet Extruder have compared with ordinary sheeting and open mixing equipment?

A20:Five core highlights:

1. Continuous automatic mass production: Replace intermittent manual rubber folding with 2~2.8 tons/hour capacity, one machine equals output of two open mixers to greatly cut labor cost;
2. Residue-free converging screw: Variable-pitch & variable-depth double taper structure delivers full material conveying without dead space, nearly zero color cross-contamination for mass dark-color production;
3. Independent segmented precise temperature control: 3 sets of 9KW oil heaters separately control temperature of screw, trough and rollers to realize highly uniform sheet thickness and physical properties;
4. Independent variable frequency speed regulation: Separate frequency converters for screw and rollers to adapt to formulas of different viscosity and capacity;
5. Strong matching adaptability: Standardly matched with ASFROM 110L kneader unit, customized die width available, compatible with all types of rubber & plastic mixing production lines.

Q21: What capabilities does the temperature control system of AEM-450 possess?

A21:Split fully automatic oil heating temperature control system with three independent circulating thermal oil heating circuits and roller water channel auxiliary cooling. Multi-point real-time temperature measurement enables the electric control system to adjust heating power automatically, locking material plasticization temperature range throughout the process to produce sheets with uniform temperature without local overheating or under-plasticization.

Q22: What customized adjustments are supported by AEM-450?

A22:Multi-dimensional non-standard customization is supported: die baffle width, screw length-diameter ratio, roller dimension, matched production capacity, electric control process program, oil heater power configuration and overall machine layout. Exclusive solutions can be customized according to customers’ material viscosity, single batch output, workshop size and color change frequency.

六. Safety & Performance

Q23:What safety protection designs are equipped on AEM-450 Double Taper Sheet Extruder?

A23: Multiple safety protections: 1. Roller lifting safety limit, automatic speed limiting and stop after full lifting; 2. Electric control overload protection, automatic speed reduction when screw or roller load exceeds standard; 3. Emergency stop buttons arranged all over the machine for one-click power cut under sudden failure; 4. External protective cover for transmission gears to avoid human contact with rotating parts; 5. Automatic heating circuit cut-off under over-temperature to prevent rubber scorch.

Q24: Why can AEM-450 realize uniform and stable extrusion plasticization?

A24:

1. Continuous extrusion and shearing by variable-pitch variable-depth double taper screw to fully re-disperse kneaded compound;
2. 2. Three-section independent temperature control system stabilizes material temperature in each zone to avoid uneven plasticization caused by temperature difference;
3. 3. Independent variable frequency speed regulation for screw and rollers matches material conveying and sheeting speed with controllable material residence time;
4. . Uniform overall discharge from die without unilateral thickness deviation.

七.Brand & Applicable Production Lines

Q25: What upstream and downstream machines can be matched with AEM-450 Double Taper Sheet Extruder to form a complete production line?

A25:pstream standard matching: ASFROM K-110L / K-150L kneader unit; downstream compatible with pelletizer, foaming molding machine, shoe sole vulcanizer, rubber sheet cooling cutter and extrusion pelletizing equipment. It can build full-automatic integrated production lines for EVA shoe foam, tire compound mixing, color masterbatch pelletizing and rubber sealing parts. Matching with back-charging kneader is suitable for high-dust carbon black mass production lines.

Q26: What is the brand positioning of ASFROM AEM series double taper extruder?

A26: It belongs to ASFROM full-set rubber & plastic mixing equipment solution product line with brand slogan “Right Solution”. Specially designed for automatic continuous sheeting process after kneading, it targets shoe material, tire rubber, chemical color masterbatch and automotive rubber-plastic component industries, featuring high capacity, labor saving, low residual material and stable continuous sheet output. Full machine non-standard customization is supported with seamless matching for all ASFROM kneader models.

八. Model Selection Consultation

Q27: How to judge whether AEM-450 Double Taper Sheet Extruder is suitable for your production?

A27:Four model selection judgment standards:

1. Capacity demand: Hourly output ≥2 tons with long-term mass uninterrupted production;
2. Matched main machine: Equipped with ASFROM kneader of 110L volume or above;
3. Material type: Mainly carbon black filled black compound, or mass fixed production of light-colored materials;
4. Production demand: Pursuit of automatic labor reduction, uniform sheet thickness and lower color-switch cleaning frequency.

Production lines with small batch, frequent daily light/color formula switching and regular deep cleaning prioritize traditional two roll open mixers.

Q28: Can the heating power configuration of AEM-450 temperature control system be adjusted?

A28:Standard configuration includes 3 sets of 9KW oil heating machines. For high-viscosity and hard-to-plasticize materials, single higher-power oil heaters can be upgraded, and cooling water flow can be increased to optimize cooling effect. Power schemes can be adjusted on demand before delivery without whole machine refitting later.

Q29: Can die width and roller size be modified or replaced after machine delivery?

A29:Die, roller and screw are customized matching components, whose dimensions must be confirmed before factory delivery. The frame, transmission and temperature control pipelines are designed according to fixed sizes and cannot be directly refitted or replaced after delivery. Sheet width and thickness production demands need to be confirmed synchronously during model selection stage.