Case Studies

The supplied machine profile is a 5600 mm tissue line operating in the 1800–2000 m/min range and making 12.5–16 g/m² grades. The listed candidate is 3CSSBW70204B, an SSB triple-layer forming fabric. The model schedule records a 2+4 shaft structure, warp density of 72–74 per centimetre, weft density of 64–72 per centimetre, a 0.66 mm caliper and a 380–420 g/m² fabric weight. Its stated permeability range is 6300–8200 m³/m²·h, equivalent to 400–520 CFM, and should be confirmed for the intended position.

For a high-speed tissue application, the first technical discussion is whether the sheet-side support and drainage window correspond to the furnish and forming-element layout. The supplied description identifies fine yarns and high warp density for the sheet-support surface. Those facts can guide a shortlist, but they do not establish a guaranteed formation, softness, retention or machine efficiency result. The mill should compare its current fabric construction, vacuum conditions, forming-board arrangement and measured drainage behavior before confirming a replacement.

The schedule lists 850 N/cm breaking strength. The quotation review should confirm the test basis and whether the supplied value refers to the fabric specification required for this position. Width, loop length, seam arrangement, edge design and orientation also need to match the machine drawing. The 1800–2000 m/min range is a machine descriptor supplied for the case, not a performance warranty for the fabric.

A useful inquiry package for this configuration includes the current fabric model, target grade range, speed by grade, width, loop length, seam and installation method, forming-element layout, permeability measurement and any documented operating observations. If the mill is considering a permeability change, state whether the goal is a measured drainage adjustment or a surface-support review. This prevents a model-level catalog value from being mistaken for a position-specific final specification.

This is an anonymized configuration summary based on the machine envelope and candidate-model information supplied for this project. No customer identity, before-and-after measurements, run length or quantified production outcome was provided, so none is claimed here. The configuration should be checked against the mill’s current drawings, operating records and the final technical quotation.

This configuration note uses the same supplied tissue-machine envelope: 5600 mm width, 1800–2000 m/min and 12.5–16 g/m². The candidate model is 3CSSBW70204B. The purpose here is to organize the replacement inquiry, not to imply a separate customer installation or a measured result. Keeping the operating envelope attached to the model helps a buyer request a quote using enough context for a technical review.

The listed fabric is an SSB triple-layer design with a 2+4 shaft pattern. Warp density is 72–74 per centimetre and weft density is 64–72 per centimetre. The schedule gives a 0.66 mm caliper, 380–420 g/m² fabric weight, air permeability of 6300–8200 m³/m²·h (400–520 CFM), and 850 N/cm breaking strength. Since permeability appears as a range, the buyer should identify the requested value and confirm the applicable measurement method rather than using the range as a fixed operating target.

Before ordering, compare those figures with the incumbent fabric record and the machine position. Confirm whether the width is finished width, the loop length is measured on the same basis, and the seam and edge details match the installation. Ask the supplier to identify any tolerance, test method or variation from the model schedule in the written offer. These checks are especially important when the machine runs multiple grades across the supplied basis-weight range.

For a useful selection conversation, provide the speed and basis weight for each principal grade, current model and construction, measured permeability, fabric width and loop length, seam arrangement, forming-element details and the relevant drainage or sheet-quality objective. Include only observed issues that can be described or measured. This gives both parties a clear technical baseline and helps separate a construction question from an installation or operating adjustment.

This is an anonymized configuration summary based on the machine envelope and candidate-model information supplied for this project. No customer identity, before-and-after measurements, run length or quantified production outcome was provided, so none is claimed here. The configuration should be checked against the mill’s current drawings, operating records and the final technical quotation.

The supplied paper-machine profile is a 5280 mm single long-wire machine with a D-wire former, running at 1300–1350 m/min and producing 60–80 g/m² cultural paper. The forming-fabric candidate is 3CSSB603020, an SSB triple-layer design with a 2+5 shaft construction. The schedule records a plain-weave sheet side, a satin wear side, warp density of 61–64.5 per centimetre, weft density of 64–81 per centimetre, 0.83 mm caliper and fabric weight of 450–530 g/m².

For this kind of application, the former configuration and the role of each fabric position should be stated explicitly. A long-wire and D-wire arrangement can involve different drainage and sheet-support duties; the model name alone does not identify which position is under review. The supplied features for 3CSSB603020 describe multiple support points, a smooth sheet-side surface, a wear-side design, and an open structure. These are construction notes to verify against the mill’s formation targets, not claims that a particular result has already been achieved.

The listed forming-fabric permeability is 4500–7000 m³/m²·h (285–450 CFM), with an 850 N/cm breaking-strength value. The schedule also gives FSI 172 and DI 27.7. A buyer should confirm the test methods and target values before comparing these with another fabric or a historical data sheet. The range should be narrowed to the actual position and operating window in the final specification.

SJ16904 is included as a related dryer-section candidate for the same paper-machine profile, not as a substitute forming fabric. Its double-warp, double-layer construction and configurable air-permeability range of 1817–4500 m³/m²·h (90–300 CFM) are listed for high-speed dryer applications. If both positions are being quoted, provide separate width, loop length, seam, position and permeability data for each fabric so the two specifications are not conflated.

The request should include the grade and basis-weight range, speed by grade, former arrangement, position map, current fabric constructions, measured drainage or permeability, width, loop length and seam details. State which quality or runability objective is being evaluated. Without those details, a catalog match can only be preliminary.

This is an anonymized configuration summary based on the machine envelope and candidate-model information supplied for this project. No customer identity, before-and-after measurements, run length or quantified production outcome was provided, so none is claimed here. The configuration should be checked against the mill’s current drawings, operating records and the final technical quotation.

This configuration note focuses on the dryer-section side of the supplied 5280 mm cultural-paper machine profile. The line is described as a single long-wire plus D-wire former operating at 1300–1350 m/min on 60–80 g/m² paper. SJ16904 is the listed dryer-mesh candidate. It uses a double-warp, double-layer structure with flat warp yarn measuring 0.36 x 1.06 mm, weft yarns of 0.90/0.60 mm, 16.2 warp ends per centimetre, 6.5–9.5 weft picks per centimetre and 1.62 mm caliper.

The air-permeability range in the supplied schedule is 1817–4500 m³/m²·h, corresponding to 90–300 CFM, configurable by dryer position. That range should not be ordered without specifying the intended cylinder group and target. The schedule also gives mesh breaking strength of at least 2000 N/cm and seam strength of at least 800 N/cm. Confirm test basis, seam type and whether the requested values are applicable to the final width and joint design.

SJ16904 is described for high-speed single-felted and multi-cylinder dryer service, including packaging grades, linerboard and corrugating paper. For the cultural-paper machine in this case, the buyer should verify that the actual dryer arrangement and fabric position match the intended service. The product description also notes that permeability can be configured by position and that belt and leader-web arrangements are available; any such request should be written into the quotation rather than inferred from the base model.

The related forming-fabric candidate 3CSSB603020 belongs to a separate position. Its data includes an SSB 2+5 shaft construction, 4500–7000 m³/m²·h permeability and an 850 N/cm strength value. If both the forming and dryer sections are part of one procurement, list them as separate line items and give each its own current construction, width, loop length, seam and operating target. This avoids applying a forming-section value to a dryer fabric or vice versa.

The inquiry should state speed by grade, paper basis weight, dryer group, fabric position, width, loop length, seam, current permeability and installation details. Any target adjustment should be based on documented operating data and confirmed by the supplier.

This is an anonymized configuration summary based on the machine envelope and candidate-model information supplied for this project. No customer identity, before-and-after measurements, run length or quantified production outcome was provided, so none is claimed here. The configuration should be checked against the mill’s current drawings, operating records and the final technical quotation.

The machine envelope supplied for this anonymous linerboard configuration is 6600 mm, three-ply construction, 750–1100 m/min and 130–230 g/m². The listed forming-fabric candidate is 3CSSB365020, an SSB triple-layer fabric with a 2+10 shaft construction, 40.5–41.5 warp ends and 39–45 weft picks per centimetre. The schedule gives 1.5 mm caliper, 840–900 g/m² fabric weight, permeability of 6300–7500 m³/m²·h (400–475 CFM) and 1200 N/cm breaking strength.

The product data describes a coarse-weft design for higher-basis-weight corrugating and kraft liner grades and identifies possible use as a bottom fabric in a three-ply arrangement. The position still needs to be stated: a top, middle or bottom ply may have different furnish and drainage requirements. The supplied description also mentions longitudinal and transverse stability and stiffness, but no measured formation or runability outcome was provided for this case. Those characteristics should be validated against the mill’s own operating criteria.

GW22504K is the related dryer-mesh candidate. Its listed construction is a 4-harness double-layer round-monofilament design using 0.50 mm hydrolysis-resistant PET warp and weft. The schedule states permeability of 11200 m³/m²·h (709 CFM), 2.0 mm caliper and breaking strength of at least 2000 N/cm. The product notes target high-basis-weight linerboard and corrugating paper where high permeability is specified. The final dryer position and airflow requirement should be confirmed; a high nominal value is not a universal target for all groups.

When quoting the two fabrics together, identify each position separately and provide its width, loop length, seam arrangement, edge requirements and current model. For the forming fabric, include ply, furnish, basis weight and drainage or retention objectives. For the dryer mesh, include dryer group, current permeability and the measurement basis. This gives the supplier enough detail to check whether the listed construction matches the machine rather than assuming a whole-machine replacement.

The supplied brief does not include customer identity, installation date, run duration or before-and-after performance measurements. This page therefore presents the configuration and specification-matching questions only, with no claim of a quantified result.

The supplied corrugating-medium profile is a 5600 mm single long-wire machine, running at 800–1000 m/min and making 60–120 g/m² grades. The forming-fabric candidate is 3CSSB404520, an SSB triple-layer design with a 2+10 shaft structure. Its listed warp density is 42.5–45 per centimetre, weft density 41–53 per centimetre, caliper 1.25 mm and fabric weight 720–780 g/m². The supplied permeability window is 5500–7580 m³/m²·h (348–480 CFM), and the strength value is 1100 N/cm.

The supplied feature notes describe a plain-weave sheet side and coarse weft with a 5-shaft twill wear-side design. They also state a 3:2 weft ratio and identify the construction for low-basis-weight corrugating and kraft packaging grades, with possible use as a middle fabric in a three-ply forming arrangement. For the single-long-wire machine in this profile, confirm which part of the description applies to the actual fabric position and whether the machine layout matches the proposed structure.

SJ16904 is the dryer-fabric candidate for the dryer section, not a forming-wire alternative. The double-warp double-layer design is listed with flat warp yarn of 0.36 x 1.06 mm, 0.90/0.60 mm wefts and a configurable permeability range of 1817–4500 m³/m²·h (90–300 CFM). The chosen point within the range should reflect the dryer group and operating conditions. Mesh and seam strength are listed separately, so the quotation should preserve that distinction.

For an RFQ, separate forming and dryer positions into different specification lines. Include the paper grade and basis weight, machine speed by grade, width, loop length, forming-element or dryer-group details, current fabric construction, seam and edge requirements, and current permeability or drainage information. Where values are configurable, request the proposed value and test method in writing. This makes the review auditable and reduces the risk of comparing unlike measurement bases.

No plant identity, failure diagnosis, service-life figure or production improvement was supplied. This anonymous note is limited to the stated machine envelope, candidate models and the technical checks needed before a final selection.