The stalk has layers and functions
Fibres of interest for textiles are found in the outer region of the stalk, associated with the bast. The inner woody portion becomes hemp shiv when it is separated and broken into fragments. “Hemp fibre” and “hemp shiv” therefore name different fractions. Microscopic observation of stalks allows researchers to study their tissues and the connections that initially hold them together. DTU: microscopic observation of stalks and fibres
A cross-section helps more than a photograph of an already processed bale. It lets us picture an interior and an outer layer, without assuming there is a perfect boundary that machines separate without losses. In plant materials, the quality of separation matters: attached fragments, different sizes and variation between batches may all occur.
From origin to behaviour
A long fibre offers different possibilities from a short fragment. Yet knowing the general shape is not enough to assign performance. In a fabric, spinning, blending and textile construction all contribute; in a panel, so do the proportions of its components, the binder and the process. The finished product has properties that must be measured in that product, rather than inferred solely from the crop it came from.
This is where a common showroom confusion appears: calling an object “made from hemp” does not tell us how much it contains or which fraction was used. The description can be correct and still be insufficient. Useful information would be more specific: the type of plant component, its proportion, its function and the relevant test for the intended application.
Separation leaves its mark too
A study of decortication compared stalks under different moisture conditions and observed consequences for separation and fibre damage. There is no need to turn its results into an industrial recipe to grasp the central idea: processing changes the material. Two batches of the same species are not necessarily equivalent when they leave a processing line. Study of decortication and stalk separation
As an illustrative example, a designer seeking a fabric and a manufacturer seeking a filling should not assess a batch against the same criteria. A short fraction unsuitable for the first application may be useful for another. Making use of materials means finding appropriate applications, not claiming that every leftover works in every object.
Four questions that improve a specification
Which part of the stalk is used? How are its size or structure described? What other materials is it combined with? Which test supports the advertised performance? These questions turn a broad expression into an understandable technical conversation. They also help compare products that share a plant photograph but have very different compositions.
The distinction between fibre and shiv also changes how we look at the plant. The stalk stops being merely a support accompanying the leaf and becomes a reserve of material possibilities. This is a particularly fertile perspective for design: it values each fraction for what it can actually contribute, without asking it to demonstrate every virtue attributed to hemp in general.
Take this with you
When comparing materials, start with the fraction of the stalk and finish with tests on the finished product.
Sources you can open
The source may be in its original language. English publication does not change the jurisdiction or date discussed.
Follow the thread
Open the cannabinoid encyclopedia
Check the identity, research, uncertainties and documented forms of each compound.