Question 1

What types of flexo printing machines do you offer?

Accepted Answer

We offer a comprehensive range of flexo printing machines including Gearless CI (Central Impression) Flexo Presses, Gear-driven CI Flexo Presses, and Stack Type Flexo Presses (both servo and gear driven).

Question 2

What is the difference between CI and Stack flexo presses?

Accepted Answer

CI (Central Impression) flexo uses a single large drum with print stations around it, ideal for flexible films with superior registration. Stack flexo has vertically arranged print stations, better for paper/cardboard with lower investment cost.

Question 3

What is the difference between CI flexo and Stack flexo?

Accepted Answer

CI (Central Impression) flexo uses one large central drum for all printing units, ensuring precise registration for thin extensible films (BOPP, PET, PE). Stack flexo has independent impression cylinders per unit, better suited for paper/board. CI is the industry standard for food packaging films.

Question 4

What materials can your machines print on?

Accepted Answer

Our machines can print on a wide variety of substrates including plastic films (PE, BOPP, PET, CPP, NY, etc.), paper (kraft paper, cup paper, etc.), and non-woven fabrics.

Question 5

How much does a flexo printing machine cost?

Accepted Answer

Flexo press costs vary by configuration: Entry-level (Honor Series): $300K-600K, Professional (King Series): $600K-1.5M, Premium (Master Series): $1.5M-2.5M. ROI typically achieved in 18-36 months depending on production volume.

Question 6

How many colors can LISHG flexo machines support?

Accepted Answer

LISHG CI presses support 2–10 colors in a single pass. Common configurations are 6, 8, and 10 colors. 8-color machines enable Extended Color Gamut (ECG) printing—matching 90%+ of Pantone colors using only CMYK+OGV fixed inks without spot ink changes.

Question 7

Do you provide installation and training services?

Accepted Answer

Yes, we provide professional installation and commissioning services worldwide. Our engineers will travel to your factory to set up the machine and train your operators until they are proficient in operating the equipment.

Question 8

What are the benefits of gearless flexo technology?

Accepted Answer

Gearless flexo provides: 5-minute changeovers (vs 20-30 min), 50% waste reduction, ±0.05mm registration accuracy, 30% productivity increase, lower maintenance costs, and real-time registration adjustment while running.

Question 9

What substrates can LISHG flexo presses handle?

Accepted Answer

LISHG machines handle BOPP, BOPET, BOPA, CPP, PE, PVC films (12–250 microns), paper, cardboard (up to 400 gsm), aluminum foil, and non-woven fabric. Substrate changeover requires tension and drying system adjustment—our team provides machine configuration support for each substrate.

Question 10

What is the warranty period for your machines?

Accepted Answer

We provide a standard 12-month warranty for all our machines. During this period, we provide free replacement parts for any non-human induced damages. We also offer lifetime technical support.

Question 11

What is the maximum print speed of your CI flexo press?

Accepted Answer

The King Series reaches 450 m/min. Master Series standard speed is up to 300 m/min. Speed depends on substrate, ink system, and number of colors. Water-based inks require lower speeds (200–250 m/min) due to longer drying time.

Question 12

Can you customize the machine according to my requirements?

Accepted Answer

Absolutely. We specialize in providing tailored solutions. We can customize printing width, number of colors, printing speed, and add auxiliary equipment (like inline slitting, auto splicing, etc.) based on your specific production needs.

Question 13

What is gearless drive technology?

Accepted Answer

Gearless (servo) drive uses individual servo motors per printing unit with no mechanical gears. Benefits: eliminates gear marks/banding, register accuracy ±0.05mm, electronic print repeat adjustment (no cylinder changes), 30-min setup vs 2-hour setup on geared machines, 40% lower maintenance costs over 5 years.

Question 14

Do LISHG machines support water-based ink systems?

Accepted Answer

Yes. All LISHG presses support water-based, solvent-based, and UV/LED-UV inks. Water-based ink reduces VOC emissions by 95% vs solvent. Our inter-deck hot-air drying system achieves complete evaporation at 200–250 m/min. Switching between ink systems requires cleaning and drying system adjustment.

Question 15

How does flexographic printing work?

Accepted Answer

Flexo uses flexible photopolymer plates on rotating cylinders. An anilox roll (engraved ceramic cylinder) meters precise ink volume to the plate, which then prints onto the substrate. The anilox roll's cell volume (BCM) and line screen (LPI) determine ink lay-down. LISHG machines use servo-controlled anilox drive for consistent ink metering.

Question 16

What is anilox roll and how does it affect quality?

Accepted Answer

The anilox roll is an engraved ceramic cylinder with millions of micro-cells holding precise ink volume. Cell volume (BCM) determines ink lay-down; line screen (LPI) determines detail capability. Without regular cleaning, cell volume drops 10-15%/year causing color shift. LISHG recommends weekly ultrasonic cleaning and 6-month profilometer measurement.

Question 17

How is print registration controlled?

Accepted Answer

Registration uses servo-driven register systems with machine vision cameras. Automatic Register Control (ARC) detects marks at full speed and makes real-time micro-corrections within 0.5 seconds. Longitudinal and lateral accuracy: ±0.05–0.1mm. The CI drum design inherently provides superior registration because all units share one substrate contact point.

Question 18

What drying systems are available?

Accepted Answer

Options: (1) Hot Air Drying – for solvent/water-based inks, inter-deck + final oven with heat recovery; (2) UV Curing – medium-pressure mercury lamps; (3) LED-UV – 70% energy savings vs mercury, instant on/off, no ozone; (4) IR+Hot Air – for water-based on absorbent substrates. LISHG designs drying systems to substrate and ink requirements.

Question 19

What is CI flexo printing and why is it preferred for flexible packaging?

Accepted Answer

CI (Central Impression) flexo printing arranges all print stations around a single large central drum. The substrate is held continuously against the drum, providing stable web support across all color stations. This delivers tight registration, high speeds, and excellent quality on thin film substrates — making it the dominant technology for flexible food, pharmaceutical, and consumer goods packaging worldwide.

Question 20

How long is the warranty on LISHG machines?

Accepted Answer

Standard 12-month warranty covers all manufacturing defects on mechanical, electrical, and pneumatic components. Extended 24/36-month warranty packages are available. Wear parts (anilox rolls, doctor blades, plate cylinders) are consumables not covered. Spare parts supply available with 24-hour express shipping for critical items.

Question 21

What training is provided with a new machine?

Accepted Answer

Training includes: (1) Factory Acceptance Test – 3-day trial at LISHG factory before shipment; (2) On-site Installation Training – 5–7 days during commissioning; (3) Operator Training – machine operation, job setup, ink management; (4) Maintenance Training – daily/weekly/monthly procedures. Online video tutorials and manuals also provided.

Question 22

What is the delivery lead time?

Accepted Answer

Standard lead time is 90–120 days from deposit payment. Standard 6–8 color CI presses: 90 days. Custom configurations (special width, extra units, in-line lamination): 120–150 days. Express delivery on stocked models at additional cost. LISHG sends weekly production progress updates.

Question 23

Which machine is best for food packaging?

Accepted Answer

For food packaging films (BOPP, PET, PE), the LISHG Master Series or King Series 8-color CI press is recommended. Key features: gearless servo drive for zero gear marks, precise tension control for 12-micron films, water-based or UV ink compatibility for food safety compliance (FDA/EU 10/2011), and automatic register control. Over 200 installations in food packaging facilities worldwide.

Question 24

Can LISHG machines be customized?

Accepted Answer

Yes. Customization options include: printing width 650–1800mm, 2–10 color units, in-line lamination/slitting/rewinding, UV or water-based ink systems, special automation levels (semi-auto to full auto), Industry 4.0 connectivity (OPC-UA, MES integration), and ATEX-rated explosion-proof versions for solvent operations.

Question 25

What certifications do LISHG machines have?

Accepted Answer

LISHG machines hold: CE Mark (EU Machinery Directive 2006/42/EC), ISO 9001:2015 Quality Management, China Compulsory Certificate (CCC) where applicable, and proprietary technology patents. Electrical systems comply with IEC standards. ATEX-certified versions available for solvent printing rooms. GMP documentation support for pharmaceutical customers.

Question 26

What power supply is required?

Accepted Answer

3-phase power: 380V/50Hz (China), 415V/50Hz (Europe/Asia), or 460V/60Hz (North America). Total connected load: 30–120 kW depending on configuration. Voltage fluctuation must stay within ±5%. Dedicated distribution panel required. Power factor correction recommended for loads >100 kW.

Question 27

What environmental conditions are required for the printing room?

Accepted Answer

Temperature: 18–28°C (±2°C stability). Humidity: 45–65% RH. Compressed air: 6–8 bar, oil-free, ISO 8573-1 Class 1.4.2. For solvent printing: explosion-proof ventilation (15–20 air changes/hour), ATEX Zone 2 electrical classification. For water-based: standard ventilation (8–10 air changes/hour). Minimum 500 lux lighting at operator level.

Question 28

What is the ROI timeline for a LISHG machine?

Accepted Answer

Based on 50+ installations: entry-level 6-color CI press ROI in 18–24 months; 8-color mid-range in 24–36 months; high-speed King Series in 30–42 months. Key savings drivers: 40–60% reduction in outsourced printing costs, setup time reduction from 2 hours to 30 minutes (gearless), waste reduction from 3% to <0.5%, and premium contract capability.

Question 29

Is flexo printing suitable for pharmaceutical packaging?

Accepted Answer

Yes. LISHG offers pharmaceutical-grade configurations with: IQ/OQ/PQ validation documentation support, 100% vision inspection for serialization, low-migration UV ink system compatibility, 21 CFR Part 11 compliant electronic records, GMP-compliant construction and cleaning procedures. Serialization and track-and-trace systems integration available.

Question 30

What is the difference between flexo printing and gravure printing?

Accepted Answer

Flexo uses raised photopolymer plates and an anilox roller for ink metering. Gravure uses a chrome-engraved cylinder. Key differences: flexo plate cost USD 400–1,200 vs. USD 5,000–18,000 for gravure cylinders; flexo job changeover 30–90 min vs. 2–4 hours for gravure; gravure excels on ultra-long runs (200,000+ m). Modern gearless CI flexo matches gravure quality for most applications at dramatically lower prepress cost.

Question 31

How does Extended Color Gamut (ECG) printing work?

Accepted Answer

ECG uses 7 fixed inks (CMYK + Orange, Green, Violet) to simulate 90%+ of the Pantone library without mixing spot inks. Benefits: eliminate spot ink changeovers (60% faster setup), reduce ink inventory from 40–60 SKUs to 7 fixed inks, increase press utilization from 65% to 80%+. Requires 8-color press, HD flexo plates, and advanced color management software.

Question 32

What is the difference between flexo and rotogravure printing?

Accepted Answer

Flexo: flexible plates ($500–2,000 per job), 2–4 hour setup, compatible with water-based inks, better for short/medium runs, lower environmental impact. Gravure: engraved copper cylinders ($3,000–8,000 each), 4–8 hour setup, requires solvent inks, excellent for very long runs (1M+ meters). For most flexible packaging: flexo is more economical for run lengths under 500,000 meters.

Question 33

What tension control system is used?

Accepted Answer

LISHG uses closed-loop automatic tension control with load cell sensors in all web path zones: unwind, printing, optional lamination, and rewind. Each zone is independently controlled to ±0.5N accuracy. This ensures wrinkle-free running of delicate 12-micron films. Tension profiles are saved per job for consistent repeat setups.

Question 34

How do I choose between 6-color and 8-color machine?

Accepted Answer

Choose 6-color for: standard CMYK+2 brand colors, lower investment, shorter changeover. Choose 8-color for: Extended Color Gamut printing (eliminating spot inks), photographic-quality packaging, premium brands requiring exact Pantone matches, or complex designs with 6+ colors. ROI of 8-color over 6-color typically recovered within 12–18 months for ECG-capable operations.

Question 35

What floor space is required for a CI flexo press?

Accepted Answer

8-color CI press footprint: ~15m (L) × 5.5m (W) × 3.8m (H). Including clearance zones: 22m × 10m total. Minimum ceiling height: 4.5m. LISHG provides detailed 2D layout drawing for facility planning during project phase. Foundation slab minimum 300mm thick reinforced concrete rated 1,500 kg/m².

Question 36

What does 'gearless' mean in CI flexo printing?

Accepted Answer

In gearless CI flexo, each print unit is driven by its own independent servo motor with no mechanical gears connecting them. Registration is controlled electronically through a digital 'electronic shaft' that maintains precise phase relationships between all servo motors thousands of times per second. The result is ±0.05 mm registration accuracy, unaffected by gear wear or speed-dependent resonance.

Question 37

What print widths are available for LISHG CI flexo presses?

Accepted Answer

LISHG CI flexo presses are available in print widths from 600 mm to 2200 mm. Standard configurations: 800 mm, 1000 mm, 1200 mm, 1450 mm, and 1600 mm. Custom widths can be engineered on request. The optimal width depends on your substrate roll widths, order sizes, and target substrates — buy 10–15% more than your current largest order.

Question 38

What ink systems are compatible with LISHG CI flexo presses?

Accepted Answer

LISHG CI flexo presses support water-based, solvent-based, and UV-curable ink systems. The drying/curing configuration is specified at order time. Water-based configurations include inter-station hot-air drying. UV configurations include UV lamp or LED-UV curing units. Hybrid configurations for mixed ink systems are available. The industry trend is toward water-based for regulatory and sustainability compliance.

Question 39

What substrates can LISHG CI flexo presses print on?

Accepted Answer

LISHG CI flexo presses print on the full range of flexible packaging substrates: BOPP, BOPET, CPP, PE (LDPE, HDPE, LLDPE), PA (nylon), aluminum foil, paper, non-woven fabric, and FFS films. Substrate-specific tension control profiles are stored in the press control system and configured for each substrate at commissioning.

Question 40

What is the minimum order quantity (MOQ) for purchasing a LISHG flexo press?

Accepted Answer

LISHG machines are sold as individual units — there is no minimum order requirement beyond one machine. Each press is configured to specification for the customer's production requirements including print width, color count, substrate type, ink system, and automation level.

Question 41

How do I request a quotation for a LISHG CI flexo press?

Accepted Answer

Contact LISHG through the website inquiry form or directly via email or WhatsApp. For an accurate quote, provide: target substrate and thickness range, required print width, color count, ink system (water-based, solvent, or UV), estimated annual production volume, and any special requirements (corona treatment, web inspection, automatic register).

Question 42

What warranty does LISHG provide on its CI flexo presses?

Accepted Answer

LISHG provides a standard 12-month warranty from installation acceptance, covering manufacturing defects in mechanical, electrical, and pneumatic systems. Consumables, wear items (doctor blades, seals, belts), and damage from improper operation are excluded. Extended warranty programs and annual service contracts are available.

Question 43

Does LISHG provide operator training for new press installations?

Accepted Answer

Yes. On-site operator and maintenance training is included with every new press installation as standard. Training covers press setup, job changeover sequences, quality troubleshooting, daily/weekly maintenance, and emergency procedures. Duration: 5–10 days depending on configuration. Remote training and refresher courses are also available.

Question 44

What is the lead time for a new LISHG CI flexo press?

Accepted Answer

Typically 90–150 days from order confirmation to factory acceptance testing, depending on press configuration and production schedule. Shipping and installation add 15–30 days. LISHG maintains a limited inventory of standard configurations that may be available for shorter lead times.

Question 45

Does LISHG export worldwide?

Accepted Answer

LISHG exports to customers in 100+ countries across Asia Pacific, Southeast Asia, South Asia, the Middle East, Africa, Europe, and Latin America. All presses meet international electrical and safety standards. CE compliance documentation, customs clearance support, and local installation coordination are provided.

Question 46

What registration accuracy does the Master Series achieve?

Accepted Answer

The Master Series gearless CI flexo press achieves ±0.05 mm registration accuracy in production conditions, maintained consistently at all speeds up to 450 m/min. The gearless electronic shaft architecture with closed-loop servo control corrects position at microsecond intervals — unlike gear-driven presses where registration degrades at higher speeds.

Question 47

What is the maximum printing speed of the Master Series?

Accepted Answer

The Master Series achieves up to 400–500 m/min depending on configuration, substrate, and ink system. Practical speeds for food-grade flexible packaging on film typically run 250–380 m/min. Registration accuracy and color consistency are maintained at all speeds within the operating range.

Question 48

How many color stations does the Master Series support?

Accepted Answer

The Master Series is available in 4, 6, 8, and 10 color configurations. Most flexible packaging applications use 6 or 8 colors (CMYK plus spot colors and white for film). 10-color configurations support Extended Color Gamut (ECG) printing with CMYK+OGV plus white, enabling reproduction of virtually any Pantone color without custom spot ink mixing.

Question 49

Is the Master Series suitable for food packaging on BOPP film?

Accepted Answer

Yes — the Master Series gearless CI press is the recommended choice for food packaging on BOPP film. Its central impression drum provides continuous web support, eliminating tension variations that cause registration errors on sensitive film. Combined with closed-loop tension control and validated water-based ink drying, it meets food packaging quality and compliance requirements including EU 10/2011 and FDA standards.

Question 50

What is the startup waste on a Master Series press?

Accepted Answer

Well-operated Master Series presses generate 50–150 meters of startup waste per job using stored job recipes and automatic register control. This compares to 200–500 meters on older gear-driven equipment. Actual waste depends on substrate type, job complexity, and operator training level.

Question 51

What is the difference between the King Series and the Master Series?

Accepted Answer

The King Series uses a servo-gear architecture (servo motors driving through precision gearboxes), achieving ±0.1 mm registration at a lower investment than the gearless Master Series (±0.05 mm). The King Series is ideal for converters needing high production speed and good quality without the premium of a fully gearless system. Both are CI flexo presses with central impression drum substrate support.

Question 52

Does the King Series support variable repeat lengths?

Accepted Answer

Yes. The King Series supports variable repeat lengths through software parameter changes — no physical gear swaps required. This is a major advantage over traditional gear-driven presses where repeat length changes require manually swapping gears (30–60 min extra). The repeat length range depends on sleeve specifications and is confirmed at order configuration.

Question 53

Can the King Series handle both paper and film substrates?

Accepted Answer

Yes. The King Series is designed for versatile substrate handling including paper, board, BOPP, PET, and PE films. Substrate-specific tension profiles and adjustable impression settings allow operators to switch between substrate types. It is particularly well-suited for converters running mixed order profiles across paper and film packaging.

Question 54

What is the King Series job changeover time?

Accepted Answer

On the King Series with pre-mounted sleeve system and stored job recipes, a typical job changeover takes 25–45 minutes. Servo auto-register achieves specification in the first 80–150 meters of substrate. This compares to 60–120 minutes on gear-driven presses requiring manual registration setup.

Question 55

What is the Honor Series best suited for?

Accepted Answer

The Honor Series stack flexo press is best suited for paper labels, simple plastic bags, paper bags, and short-to-medium print runs where the highest registration accuracy (±0.2–0.3 mm) is sufficient. It offers a compact structure, lower upfront investment, and simpler operation compared to CI flexo. Ideal for converters starting out in flexible packaging or running simpler packaging applications.

Question 56

What print widths does the Honor Series cover?

Accepted Answer

The Honor Series stack flexo press is optimized for narrower web widths, typically 300–800 mm. This makes it well-suited for label printing, paper bag production, and small-format flexible packaging. For wider substrates and film packaging, the Master or King Series CI flexo press is recommended.

Question 57

What is the maximum speed of the Honor Series?

Accepted Answer

The Honor Series stack flexo press operates at 100–150 m/min depending on substrate, color count, and application. This speed range is appropriate for short-to-medium production runs on paper and simple film substrates. For higher-volume production requiring speeds above 200 m/min, the King or Master CI flexo series is recommended.

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