Original Core Advantages
- Keep fountain solution clean & stabilize printing quality
- Reduce water‑changing frequency, save fountain‑solution & alcohol consumption
- Shorten downtime for water tank maintenance, improve production efficiency
- Prevent refrigeration compressor pipeline blockage caused by contaminated fountain‑solution
- Lower equipment maintenance cost & sewage‑treatment expense
- Non‑woven filter cotton construction, sewn edge, high tearing‑resistance
1. Material / Micron / Applicable Fluid Type Parameter Table
| Filter Material |
Available Micron |
Max Working Temp |
Chemical Resistance |
Applicable Liquid |
Not Recommended For |
| Polyester (PE‑Polyester Felt) |
1‑200 μm |
136℃ |
Good weak‑acid; fair weak‑alkali |
Standard offset fountain‑solution, ink‑particles, metallic dust, general solvent printing liquid |
Strong alkali, strong‑concentration corrosive solvent |
| Polypropylene (PP‑Polypropylene Felt) |
1‑200 μm |
94℃ |
Excellent acid & alkali resistance |
Acidic / alkaline fountain‑solution, alcohol‑rich dampening liquid, FDA‑compliant for food‑grade printing |
High‑temperature working condition＞94℃ |
| Nomex Felt |
5‑100 μm |
204℃ |
High‑temp resistant |
High‑temperature circulating fluid, special heat‑offset equipment |
High‑cost for regular workshop usage |
💡Selection Tip:
- Most common offset printing workshop → Polyester 25‑50 μm (4×8)
- Heavy‑ink‑residue, high‑alcohol dampening system → Polypropylene 10‑25 μm
- High‑temperature circulation system → choose Nomex version
2. Replacement Cycle Suggestion
Reference data based on printing‑factory real‑site usage；subject to actual ink‑dust pollution, running hours.
| Work‑load Condition |
Polyester Filter Bag |
Polypropylene Filter Bag |
Nomex Filter Bag |
Judgment for immediate replacement |
| Light load(＜8 hours/day, low‑ink coverage) |
25‑30 working days |
30‑35 working days |
45‑60 working days |
1. Filter bag surface blocked with thick ink sludge；2. Fountain‑solution turns turbid rapidly；3. Obvious pressure‑rise in circulating pump；4. Printing appears random burr / dot distortion；5. Bag fabric tearing / fiber shedding |
| Medium load(8‑16 hours/day, normal‑coverage printing) |
12‑18 working days |
15‑22 working days |
30‑40 working days |
|
| Heavy load(＞16 hours/day, large‑area solid‑ink printing) |
5‑8 working days |
7‑10 working days |
15‑20 working days |
|
Important note:Even with low‑pollution working environment, maximum service life shall not exceed 45 days, to avoid fiber aging and fiber‑shedding contaminating fountain‑solution.
3. Installation & Replacement Step‑by‑Step Guide
For offset press fountain‑solution tank filter housing
- Step1 Power‑off & pressure release【Pic‑A:Power‑off machine water‑circulation switch】 Shut down fountain‑solution circulating pump, cut off water‑tank power supply. Release residual pressure inside filter housing, avoid liquid splash during disassembly.
- Step2 Open filter housing & take out old filter bag【Pic‑B:Take out dirty old filter bag】 Open filter‑chamber cover carefully, grab the filter‑bag top edge, pull vertically upward. Do not shake heavily, prevent captured ink‑sediment dropping back into water tank. Seal waste filter‑bag for disposal.
- Step3 Clean filter basket & inner cavity【Pic‑C:Clean support basket & housing wall】 Take out support basket, wash off ink residue. Check basket surface: no burrs (sharp burrs will puncture new filter bag). Wipe housing sealing groove clean without granular dirt.
- Step4 Check & install new Ceres filter bag【Pic‑D:Put new filter bag into basket】 Confirm size, material & micron rating match your requirement. Lay filter bag flat inside support basket. Ensure bag‑mouth sealing edge fully fits into housing groove, no folding or wrinkle, prevent liquid bypass leakage.
- Step5 Reassemble housing & exhaust air【Pic‑E:Close housing cover, tighten lock】 Close filter‑chamber cover, lock fasteners evenly. Restart circulating pump slowly, exhaust air inside filter cavity. Check sealing position for liquid leakage.
- Step6 Commissioning & observe【Pic‑F:Observe fountain‑solution clarity】 Run circulation for 10‑15 minutes, check fountain‑solution clarity. Confirm no fiber‑shedding or abnormal pump noise. Finish replacement.
⚠️Warning:Do not operate filter‑housing with power‑on & pressure‑existing. Improper installation will cause filter bypass and lose filtration function.
4. Compatible Offset Printing Press Quick‑Check Table
表格
| Brand |
Typical Machine Model |
Recommended Filter‑Bag Size |
Recommended Material‑Micron |
| Heidelberg 海德堡 |
SM52, SM74, SM102, CD102, GTO52, MO |
4"×8" /4"×14" |
Polyester 25‑50 μm |
| Man Roland 罗兰 |
R700, R500, R300 |
7"×17" /4"×14" |
Polyester / PP 25‑50 μm |
| Komori 小森 |
L40, L50, S40 |
4"×8" /7"×17" |
Polyester 25‑50 μm |
| KBA 高宝 |
RA105, RA142 |
7"×17" /7"×32" |
Polypropylene 10‑25 μm |
| Mitsubishi 三菱 |
D3000, Diamond‑V3000 |
4"×14" /7"×17" |
Polyester 25‑50 μm |
| Technotrans 水箱单元 |
Universal Heidelberg water tank unit |
4"×8" |
Polyester 25‑50 μm |
Note:If your machine is not listed above, please provide original old filter‑bag dimension or machine part‑number, we give matching suggestion.
5. FAQ
Q1: What is your minimum order quantity? A:Stock standard sizes MOQ is 1 piece. Mixed‑size order is acceptable. Custom‑spec products require higher MOQ.
Q2: What is your delivery time? A:In‑stock items: ship within 3 working‑days after receiving payment. Custom‑size / custom‑micron orders: 7‑12 working‑days production lead‑time, plus international shipping transit time.
Q3: Can you do customization? A:Yes. We support custom dimension, micron rating, material (Polyester / PP / Nomex), sewing‑process. Please send your detailed requirement. We quote MOQ & lead‑time accordingly.
Q4: What shipping options do you support? A:Sea freight, air freight, international express (DHL/FedEx/UPS/TNT). We calculate freight cost based on destination address & total weight.
Q5: How do I select correct micron rating for my press? A:General printing factory:25‑50 μm. Heavy‑ink‑solid printing:10‑25 μm. Fine‑dot high‑end packaging printing:5‑10 μm. Too‑low micron will cause fast‑blocking and frequent replacement.
Q6: Why fountain‑solution still turns dirty after installing new filter bag? A:Check 3 points:① Filter bag installed flat without bypass leakage；② Water‑tank internal sludge needs full cleaning；③ Over‑long service‑time beyond recommended replacement cycle.
Q7: What if goods arrive with damage / quality‑defect? A:Please send photos within 7 working‑days after receiving goods. We solve by replacement or negotiation based on real‑situation.
6. Similar‑Product Comparison Table
| Item |
Our Ceres Filter Bag |
Low‑cost generic non‑woven bag |
Import OEM original filter bag |
Ordinary domestic filter bag |
| Main Material |
High‑grade Polyester / PP /Nomex optional, reinforced sewing |
Recycled low‑grade fiber |
Import‑special polyester felt |
Ordinary polyester non‑woven cloth |
| Sewing Craft |
Double‑thread reinforced stitching, anti‑tear |
Simple single‑thread stitching, easy‑unravel |
Precision hot‑sewn / stitch |
Single‑layer common stitching |
| Anti‑fiber‑shedding |
✅Low fiber‑shedding, avoid contaminating fountain‑solution |
❌Easy fiber‑falling risk |
✅Zero fiber‑shedding |
⚠️Slight fiber‑shedding risk |
| Micron Accuracy |
Nominal precision 85% particle retention rate |
Large deviation of actual micron |
High‑precision calibration |
Medium deviation |
| Dimension Tolerance |
Fit perfectly for Heidelberg / Roland / Komori filter basket |
Big tolerance, easy bypass leakage |
Original‑exact dimension |
Partial size mismatch |
| Custom service |
✅Support multiple sizes, micron, material custom |
❌Almost no custom service |
❌High‑MOQ custom & long lead‑time |
Limited custom capacity |
| Unit Cost |
Cost‑effective, mid‑range price |
Very low price |
High price (3‑6 times our price) |
Low‑mid price |
| Core Advantages |
Balanced performance‑price ratio；rich stock；fast delivery；wide‑range compatibility；flexible custom |
Cheap purchase cost |
Perfect matching, stable performance |
General‑purpose, basic function |
| Core Disadvantages |
Performance slightly inferior to genuine imported original |
Short service‑life, fiber‑pollution risk |
Expensive, long delivery cycle |
Unstable raw‑material quality |
✅Ceres core selling point:Achieve most performance of imported OEM filter bag at much lower cost；full‑range stock sizes for mainstream offset presses；custom‑micron & custom‑material support for special‑production‑condition printing‑house.
7. Customer Cases & Feedback
Testimonial section for product page, you can replace real‑customer information later.
Case1: Printing house in South‑Asia(Heidelberg SM102 user)
“We adopt Ceres 4×8 polyester 25 μm filter bag for our SM102 fountain‑solution circulation. Before, we bought original OEM bags with very high cost. Ceres filter bag works well, fountain‑solution stays clean longer, less water‑changing frequency, effectively reduce our consumable cost. Fast shipment, fits perfectly without modification.”
Case2: Printing‑material trader in Latin America
“We mixed‑ordered 4×8,4×14,7×17 sizes. Multiple material options help us satisfy different local‑customer budget. Stock goods shipped within 3 days, independent‑piece package keeps goods clean during sea‑transport.”
Case3: Domestic large‑scale packaging printing factory in China
“We run heavy‑solid‑ink printing 16 hours per day. We select Polypropylene 25 μm grade. The reinforced sewing‑edge is not easy to tear. The filter‑bag service‑life meets our expectation, reduce pump‑blockage failure rate.”
General feedback summary
- Good dimensional compatibility, directly fit most Heidelberg, Roland, Komori filter‑basket；
- Reinforced stitching effectively reduce tearing‑risk during high‑flow circulation；
- Multiple micron & material options solve different printing‑work‑condition requirements.
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