Filter pads
We manufacture virgin-pulp depth filter pads for rough filtration, clarification, polishing and fine filtration, with monitored formation and media properties.
Sri Bharathi Tech manufactures and supplies Pulp and Cellulose Filter Pads from Ankleshwar, Gujarat, India, with grade, size and configuration selection based on the buyer’s process and equipment.
Technical product information
Compare MMCR pads for rough and normal filtration with MMC pads for clarifying and polishing. Explore the construction and specifications of each grade below.
Cellulose filter pads
Cotton pulp & rag
Machine-made pads for rough and normal filtration, including solvent filtration before production. Used in pharmaceutical API and food processing applications.
| Grade | Thicknessmm | Grammageg/m2 | Porositysec | B.F.kg/cm2 |
|---|---|---|---|---|
| MMCR 1 | 1 | 500 | 5 | 4 |
| MMCR 15 | 1.5 | 650 | 7 | 7 |
| MMCR 2 | 2 | 800 | 8 | 10 |
| MMCR 25 | 2.5 | 1100 | 8 | 10 |
| MMCR 3 | 3 | 1300 | 10 | 10 |
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Cellulose filter pads
Cotton & wood pulps
Machine-made pads for clarifying and polishing filtration to improve liquid clarity, including end-product filtration in pharmaceutical, food and beverage applications.
| Grade | Thicknessmm | Grammageg/m2 | Porositysec | B.F.kg/cm2 |
|---|---|---|---|---|
| MMC 05 | 0.5 | 250 | 4 to 5 | 3 |
| MMC 01 | 1 | 500 | 6 to 7 | 5 |
| MMC 15 | 1.5 | 700 | 10 | 5 |
| MMC 02 | 2 | 850 | 8 | 7 |
| MMC 25 | 2.5 | 1050 | 14 | 10 |
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Operating principle
Pulp filter pads use a formed fibre network as a depth-filtration bed. Larger particles are intercepted near the upstream side while smaller particles follow tortuous paths into the sheet and are retained by mechanical interception and process-dependent interactions with the fibre matrix. A surface cake may contribute additional retention as the run proceeds.
Sri Bharathi groups its pulp-pad range by rough or normal filtration, clarifying and polishing duties, and fine or premium filtration. Those descriptions are functional categories—not interchangeable micron claims. A trial should confirm clarity, throughput and pressure rise with the intended fluid.
Media design
Sri Bharathi pulp filter pads are produced from virgin, unbleached pulp using an automated process from pulping through finished media. Wood pulp, cotton pulp and hybrid pulp constructions are available. Quality controls cover filtration efficiency, pad porosity, absorbency, filtration speed and bursting factor.
Applicable fibres receive a porous, chemically inert wet-strength impregnation to improve mechanical strength in aqueous filtration. The exact furnish, impregnation and food-contact documentation must be confirmed for the ordered grade.
Alpha cellulose describes the high-molecular-weight cellulose fraction that remains insoluble under a defined alkali test. Its grade-specific value supports consistency, purity and extractables assessment for sensitive applications.
What to evaluate
01
Particles can be retained through the sheet thickness instead of only at a single surface.
02
Available categories cover rough, normal, clarifying, polishing, fine and premium duties.
03
Porosity, absorbency, filtration speed, efficiency and bursting factor are listed process controls.
04
Applicable grades are impregnated to improve mechanical integrity during aqueous filtration.
05
Custom specifications are available, subject to technical and manufacturing review.
06
Dimensions and openings can be matched to supported filtration equipment.
Technical data
The specifications below provide a practical basis for product selection. Final grade and configuration are matched to the intended process conditions.
| Selection parameter | Product details | Engineering relevance |
|---|---|---|
| Raw material | Virgin, unbleached pulp. | Confirm furnish and contact documentation for the ordered grade. |
| Fibre options | Wood pulp, cotton pulp and hybrid pulp options. | Furnish influences formation, strength and process compatibility. |
| Filtration category | Rough/normal, clarifying/polishing, fine/premium. | Use as a starting point; approve final performance by trial. |
| Thickness / GSM | MMC grades: 0.5–2.5 mm and 250–1050 GSM; MMCR grades: 1–3 mm and 500–1300 GSM. | Confirm current grade, nominal value, tolerance and test method. |
| Porosity / filtration speed | Monitored parameters; grade values available through technical enquiry. | Influence pressure drop, throughput and cycle length. |
| Strength | Bursting factor monitored; applicable grades use wet-strength treatment. | Important for saturated handling and supported pressure filtration. |
| Alpha cellulose | Grade-specific values and supporting documentation are available on technical enquiry. | Relevant to purity assessment but not a stand-alone retention rating. |
Process fit
Pulp pads can be evaluated for pharmaceutical intermediates, chemicals, cosmetics, beverages, food-process liquids, gelatin and compatible edible-oil duties. Selection changes with clarification stage: an open precoat or rough grade may protect a finer polishing grade, while a denser final pad may be used when incoming solids have already been reduced.
Questions engineers ask
They are related cellulose media, but pads are typically thicker depth structures while papers may be thinner and used for fast or coarse filtration. The tested grade and equipment define the duty.
No. Cellulose purity concerns material composition; retention also depends on fibre geometry, sheet formation, density, thickness, porosity and operating conditions.
A finer or denser pad may blind sooner when upstream solids loading is high. Staged filtration or preclarification can improve the final polishing cycle.
Provide a dimensioned drawing, equipment details, current sample if available, process conditions and required acceptance documents.
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Application support
Share your fluid, temperature, desired clarity, existing equipment and dimensions. Our team can then recommend a suitable construction and prepare a quotation.
