Pâte de bagasse blanchie : caractéristiques techniques, catégories et utilisations

Équipe technique de Sheeon Pulp | Équipe chargée du contenu technique | Publié le 20 août 2026

Bleached bagasse pulp is sugarcane-fiber pulp processed to remove color and lignin residue, typically reaching brightness above 80%. It’s used in molded fiber tableware, food packaging board and printing-grade paper where a white base sheet and food-contact suitability both matter.

What the Brightness Number Actually Tells You

Most marketplace listings for bleached bagasse pulp stop at brightness and gram weight. That’s enough to compare price tags, but not enough to know whether a pulp lot will run cleanly through a molding line or hold up under wet-strength testing. Brightness measures whiteness, not fiber strength — a batch can hit 80%+ brightness and still underperform on tear resistance if the bleaching process degraded fiber length.

For Sheeon’s bleached bagasse pulp, the published brightness threshold is >80%, alongside separate — and independently important — figures for dirt count, tensile index, tear index and burst index. Treating any single number as a stand-in for overall quality is the first mistake buyers make when comparing suppliers off a summary spec.

Full Spec Sheet

Compared with the typical marketplace product page — which usually lists gram weight, MOQ and a price band and stops there — this covers the four values that actually predict runability: dirt count, tensile index, tear index and burst index.

Bleached vs. Unbleached: What Changes at the Fiber Level

Buyers sourcing for the first time sometimes assume “bleached” and “unbleached” are just a color choice. The spec sheet says otherwise.

The lower beating degree on the unbleached grade means less fiber refining before use, which typically suits lower-cost molded packaging where surface whiteness isn’t a requirement. Bleached stock’s higher beating degree reflects the additional processing needed to reach printing- and food-packaging-grade brightness.

Avantages et compromis

What works in bleached bagasse pulp’s favor:

• Brightness above 80% removes the need for a secondary bleaching or whitening step downstream in most molded-tableware and printing applications.
• Tensile index above 55 N·m/g and burst index above 4.0 kPa·m²/g put it in a usable range for pressed/molded fiber forming, not just flat sheet paper.
• Ash content under 0.7% keeps mineral residue low, which matters for consistent forming-machine performance.

Where it falls short for some buyers:

Bale weight and packaging format for the bleached grade are not published on the reviewed product pages (unlike the unbleached grade, which lists a 250 kg ADMT bale weight and defined bale dimensions); freight and container-loading planning may require a direct spec confirmation from Sheeon.

Pricing and Sourcing

Sheeon states pricing depends on grade, specification, order volume, packaging and delivery requirements, without publishing a fixed price list. Buyers should request a quote against their specific tonnage and delivery terms rather than expect a published per-ton figure; no bagasse pulp price range is currently disclosed to cite here.

FAQ

Q: What brightness level counts as “bleached” for bagasse pulp?

A: Sheeon’s pulpe de bagasse blanchie is published at >80% brightness, against 40–43% for the unbleached grade — a roughly 40-point spread rather than a marginal difference.

Q: What’s the beating degree difference between bleached and unbleached bagasse pulp, and why does it matter?

A: 22°SR for bleached versus 18°SR for unbleached. The higher figure reflects additional fiber refining tied to the bleaching process, which affects how the pulp behaves when re-pulped for molding or paper forming.

Q: Is a bale weight published for bleached bagasse pulp?

A: Not on the reviewed product pages — only sheet size (700 × 800 mm) is listed. The unbleached grade publishes a 250 kg ADMT bale weight, which buyers can use as a reference point when requesting bleached-grade packaging specs directly.

What to check before requesting a quote: confirm whether the intended end use is food-contact (and therefore needs a matched certificate, not just a website claim) or non-food packaging, since that changes which documentation to request alongside the spec sheet.