Types of Pulpers: 9 Designs Compared for Buyers

Types of pulpers are labels for several classification axes, so they can’t be compared as one flat list. The label drum pulper names a mechanism, high consistency names an operating condition, continuous pulping names a duty cycle, and a broke pulper names a job. Before a paper mill compares capacity, motor size, or price, every quotation has to be translated onto the same four axes.

Quick comparison facts

4 classification axes: geometry, pulp concentration, operating cycle, and process duty.
9 common labels: useful for shortlisting, but several can describe the same machine.
8 RFQ input groups: enough to expose quotations built on different furnish, reject, utility, or safety assumptions.
No universal winner: the right type of pulper depends on what enters the vat and what must leave it.

Key takeaway

A pulper name is not a complete specification. Normalize the geometry, consistency window, duty cycle, furnish, reject route, utilities, and service-access scope before comparing output or price.

Pulper Types Start With Four Different Classification Axes

The four questions inside a pulper label: what moves the slurry, at what consistency, on what operating cycle, for which mill duty

Pulper types answer four different questions: what moves the slurry, at what stock consistency, on what operating cycle, and for which mill duty. These are separate buying questions, but they aren’t guaranteed to be independent. One design may couple high-consistency operation with batch pulping, while another model may permit a different pairing.

This is why a supplier’s list can look longer or shorter without either list being wrong. The 1989 patent on waste paper pulping, for example, distinguishes vertical and horizontal rotor-shaft geometry from batch and continuous cycles. Another apparatus patent describes its own high-consistency configuration as batch. Those sources support a normalization method, not a menu in which every axis can be combined freely.

In the pulp and paper industry, “types of pulper machines” refers here to stock-preparation units that disintegrate sheet or bale furnish. It doesn’t mean mechanical pulping or chemical conversion of wood. This guide judges the complete pulping system by pulp quality, reject behavior, and downstream fit in paper making.

The four questions hidden inside common pulper labels
Axis	What it tells the buyer	Examples	What it does not prove
Geometry / mechanism	How the rotor, tub, or drum creates mixing and fiber pulping action	Drum, D-type, vertical rotor, horizontal rotor	A guaranteed energy or fiber-quality advantage
Consistency	The supplier-declared pulp concentration window	Low, medium, high consistency	That a higher percentage always produces higher quality paper
Operating cycle	How furnish enters and accepts or rejects leave	Batch pulper, continuous pulper	A universal throughput cutoff
Process duty	Why the pulper exists in the stock preparation line	Broke, OCC, deinking, virgin pulp bale	That identical paper grades carry identical contamination

Use the axes as a translation layer. Then ask the vendor which combinations its specific pulper machine supports, at which feed conditions, and with which included reject equipment. For a broader view of where pulping sits in paper production, see the guide to how pulping equipment works across the full line.

The Pulper Label Normalization Register: 9 Labels on Four Axes

Nine pulper labels sorted onto four axes: drum, D-type, vertical and horizontal rotor; high, medium, low; batch or continuous; duty

The Pulper Label Normalization Register puts nine common labels on comparable rows. Read the “axis” column first. If two suppliers use labels from different axes, their offers aren’t alternatives yet. Ask each one to declare its geometry, warranted operating window, cycle, furnish assumptions, and reject route before scoring the quotation.

The Pulper Label Normalization Register: what each label says, where it helps, and what the RFQ must still establish
Label	Axis	What it describes	Likely buying context	Reject concern	RFQ limitation
Drum pulper	Mechanism	Lift-and-drop slushing plus screening along a rotating drum	Recovered paper where contaminant preservation matters	Define coarse rejects, accepts, and downstream washing	Requires layout, feed preparation, and complete line scope
D-type pulper	Geometry	A shaped vat and rotor circulation path	Continuous waste paper processing with active circulation	Ragger, junk trap, extraction plate, and detrasher interfaces	The name alone does not specify consistency or controls
Vertical rotor hydrapulper	Geometry	Bottom-mounted rotor on a vertical shaft	General wastepaper, market pulp, or mixed-duty service	Long and heavy contaminants need separate removal paths	Ask for tub profile, rotor, plate, and discharge details
Horizontal rotor pulper	Geometry	Side-entry rotor on a horizontal shaft	Broke and duties shaped by floor level or machine layout	Confirm the extraction and heavy-junk path	“Horizontal” does not define batch or continuous duty
High-consistency pulper	Consistency	A model designed to operate at high consistency	Duties where concentrated mechanical action is useful	Contaminant size, dilution, and extraction must be tested	Require a model-specific warranted window, not a generic band
Medium-consistency pulper	Consistency	An intermediate supplier-declared operating window	Applications balancing circulation, chemicals, and discharge	Check whether downstream equipment receives dilution	The boundary varies by machine and process
Low-consistency pulper	Consistency	A dilute slurry with active rotor circulation	Continuous extraction or duties needing pumpable stock	Rotor impact can reduce some contaminants before removal	Water loop and power consumption must be compared together
Batch pulper	Operating cycle	Fill, disintegrate, dump, clean, repeat	Variable furnish, recipe changes, or hard-to-pulp broke	Rejects can build during the cycle	State batch size, cycle time, dump and cleaning sequence
Continuous pulper	Operating cycle	Steady feed, dilution, accepts, and reject removal	Stable production where upstream and downstream can hold flow	Control and reject equipment must absorb load swings	Verify feed metering, chest capacity, alarms, and fallback
Broke pulper	Process duty	Paper machine broke recovery at a defined location	Clean or wet-strength machine broke	Wet-strength flakes may need time, heat, shear, or another step	Describe broke chemistry and worst-case sheet construction

Batch vs. continuous pulping is a control decision

Batch pulping gives the operator a defined fill, processing, dump, and cleaning window. Continuous pulping trades that separation for steady material flow and steadier pulp production. Neither mode wins at a universal tonnage. Bale arrival, stock chest volume, grade changes, wash-water timing, and reject discharge determine whether continuous operation stays stable.

A specific pulping machine can also couple cycle and concentration. One older high-consistency apparatus patent described its configuration as necessarily batch, while another patent treats batch and continuous as an operating-cycle distinction. The safe RFQ question is therefore: “Which cycle does this exact design support at our stated furnish and target consistency?”

The older apparatus patent reports one 300 gal deink-stock comparison: a standard rotor treated 200 lb of air-dry fiber at 8% consistency in 15–20 min, while the disclosed rotor treated 500 lb at 20% in 10 min. The patent itself calls that case exceptional. The comparison shows that design, consistency, and cycle can interact; it is not a benchmark for a current machine.

The continuous-detrashing patent makes the same point from the reject side. The patent contrasts a 10–20 min batch collection period with less than 2 min average residence in its continuous design. Another recovered-paper patent specifies a coarse-screen aperture no larger than 4 mm after breakup above 8% solids and an overflow around 20–30% of coarse-screen inflow. These values belong to those disclosures only.

Drum, D-Type, and Rotor Hydrapulpers Compared by Mechanism

A drum pulper and a D-type pulper differ first in how they move raw material and expose it to mechanical action. Conventional hydrapulpers use a rotor and pulper tub to create circulation. A D-type pulper changes the vat geometry around that rotor. Drum pulpers rely more on tumbling, lift, drop, and staged screening.

Drum pulper

Slushes through repeated lifting and dropping
Can combine disintegration and coarse separation along the drum
Often considered when keeping plastic and other debris large matters
Needs space, feed preparation, and downstream reject handling defined

D-type rotor pulper

Uses an active rotor and shaped vat circulation
Supports compact continuous waste paper pulping layouts
Can pair with ragger, junk trap, detrasher, and extraction screen
Needs the rotor, plate, consistency, and reject route stated together

“Hydrapulper” is often used as a broad name for a rotor-driven paper pulper; “hydra pulper” and “hydro pulper” appear as search variants. “D type pulper” likewise appears as an unhyphenated search form, not a separate design. Those terms do not identify one type of rotor, one consistency, or one accept quality. Ask for the rotor drawing, tub shape, plate opening, tip-speed basis, and contaminant trial method rather than treating the trademark-like name as a specification.

Contaminant behavior matters because an impurity that stays large can be caught by a ragger, junk trap, or coarse screen. If the pulping process breaks it into smaller pieces, it may pass with the slurry and become a problem for the next stage. Patent literature describes these mechanisms, but patent claims don’t prove that a current commercial model will deliver high pulp yield or low energy consumption in your mill.

For real product scope, compare paper pulper machine options only after the same furnish and reject specification is attached to every request.

High-, Medium-, and Low-Consistency Pulping Are Operating Classes

A consistency window is model-specific: furnish, temperature and chemistry, residence time, rotor design and downstream removal set it

Consistency isn’t merely a category label. It affects production capacity, defibering efficiency, pulp circulation, dilution, and the particle-size distribution of contaminants. It still isn’t a quality ranking: the effect depends on furnish, rotor design, temperature, chemistry, residence time, and what the downstream system can remove.

10%laboratory pulper consistency

46 ± 2 °Cmethod water temperature

8 minfull-speed pulping

25–30 Wh/kgmethod-specific energy target

A useful counterexample, with a narrow scope

A formally refereed TAPPI Journal study pulped pressure-sensitive-adhesive furnish at 5%, 10%, and 15% consistency. The 15% trial produced more small stickies than the other two. The authors called the result contrary to the accepted hypothesis and said it needed further study. This is a laboratory particle-size endpoint, not proof of deposition, machine runnability, finished-paper defects, or mill-scale reject performance.

The four-page TAPPI packaging method fixes its laboratory test at 10% consistency, 46 ± 2°C, a 10 min soak, 8 min of pulping, and 25–30 Wh/kg specific energy when conditions change. The method explicitly says pulping duration should be adjusted for a different pulper or consistency. Precision in a test method does not create a universal production range.

How to compare consistency classes without inventing universal ranges
Class label	Ask the supplier to declare	Verify in the trial	Watch downstream
Low consistency	Minimum/normal/maximum window and dilution basis	Defibering, power consumption, fiber length, contaminant size	Water load, pumping, screening, and cleaning
Medium consistency	Model definition and discharge condition	Mixing, chemistry distribution, accepts, and rejects	Dilution before screens or flotation
High consistency	Warranted range, cycle, dump/extraction, and motor basis	Defibering plus sticky/plastic fragmentation	Dilution, coarse screening, washing, and deinking

Don’t compare one vendor’s “normal consistency” with another vendor’s maximum claim. Ask both to state dry-solids basis, measurement point, furnish moisture assumption, and the consistency delivered to the next machine. That turns a high-consistency pulper versus low-consistency pulper debate into a testable process comparison.

Match the Pulper to Furnish, Not Just Paper Grade

Furnish decides the evidence: OCC needs worst-bale contaminant mass, wet-strength broke a flake test, deinking a stickies sample

The best type of pulper cannot be chosen from “kraft,” “tissue,” or “duplex board” alone. The furnish profile has to show bale form, moisture, OCC share, wet strength, coatings, adhesives, plastic, wire, ash, and seasonal variability. Different types of paper sold under the same grade can behave differently in fiber processing.

The 2026 BioResources laboratory study reported screened fiber yields above 80% for tissue, used brown kraft, OCC, and sorted clean news, while aseptic packaging, sorted office paper, and magazines averaged about 60%. The longest reported weighted fiber lengths were about 1.6–1.8 mm, with widths of 20–33 µm for several grades. The paper defines those figures as laboratory accepts under simplified recycling conditions, not total mill fiber yield. The authors call the results directional indicators, not certification values. Use the data to justify furnish testing, not to promise a mill yield.

Wet strength paper adds another constraint. NCSU’s paper-chemistry guidance notes that poorly dispersed flakes can persist when wet-strength broke or wastepaper is repulped. Time, temperature, shear, pH, chemistry, and sometimes refining can change the result. Bleached kraft and unbleached or high-yield furnish don’t always accept the same processing route.

Deinking changes the question again. If the line must detach ink from the fibers, the buyer has to define pulping chemistry, temperature, residence time, pulp washing, flotation, and the point at which dilution occurs. A machine that disintegrates the sheet may still be a poor fit if it creates small stickies that the deinking and cleaning train cannot remove.

Furnish facts that can change a pulper recommendation
Furnish signal	Why it changes the duty	Evidence to send with the RFQ
Clean virgin pulp bales	Defibering and bale wet-out dominate; reject load is usually secondary	Bale size, moisture, pulp type, production rate
OCC / mixed recovered paper	Wire, plastic, tape, wax, glass, sand, and grade variability shift the reject route	Sorted sample, contaminant mass, moisture, ash, worst bale
Wet-strength broke	Flakes may resist disintegration under ordinary time and shear	Sheet construction, resin/chemistry, cure age, target flake test
Deinking furnish	Ink, adhesive, coating, pH, heat, washing, and flotation interact	Recipe boundary, ink/stickies test, accepts/rejects sampling plan

Detrashing and Reject Handling Can Reverse the Type Decision

Reject route after the pulper: ragger junk removal, detrasher washing, then pressure screens and cleaners split accepts from rejects

Reject handling can reverse a pulper choice because the vessel is only the first separation point. The system may need a ragger for stringing material, a junk trap for heavy objects, a detrasher for light and heavy fractions, a wash drum for fiber recovery, and downstream screens or cleaners for smaller impurities.

Patent architecture for continuous detrashing separates accepts, light contaminants, and heavy contaminants, then sends the light fraction to washing and dewatering. It treats feed flow, pressure, solids content, rotor speed, and reject residence time as connected variables. This is useful mechanism evidence; claimed patent benefits are not an operating guarantee.

Reject-route boundary: what must be included, excluded, or verified
Stage	Material handled	Quote must state	Acceptance evidence
Pulper / coarse extraction	Fiber slurry plus oversized material	Plate/slot, dilution, accepts flow, dump sequence	Accepts, flake, and contaminant-size samples
Ragger / junk removal	Wire, straps, rope, fabric, metal, glass, stones	Included equipment, drive/control, safe clearing access	Worst-furnish trial and reject photographs/weights
Detrasher / reject washing	Light/heavy contaminants with carryover fiber	Flow range, wash water, fiber recovery, dewatering	Reject solids, fiber loss, water balance
Pressure screens / cleaners	Smaller coarse and density-separated impurities	Feed consistency, reject load, bypass and upset case	Cleanliness, reject rate, plugging response

Scale is not theoretical. DS Smith reports that its Kemsley reject-processing centre handles 12,000 tonnes/year of ragger material and recovers 6,000 tonnes/year of fiber from pulper rejects. Those numbers are first-party and site-specific. Their role here is to show that reject processing can be a plant-level system, not to predict another mill’s recovery.

Downstream equipment also has a finite envelope. A 2023 peer-reviewed review of chemical-pulp screening reports typical screen-room rejects of 1–3 wt.% and describes plugging around 4–5 wt.% in that specific chemical-pulp context. It also explains that more reject flow can improve cleanliness while reducing capacity. Don’t copy those values into a recycled-paper pulper guarantee; use the tradeoff to require an upset case in the stock preparation process.

Map the handoff to pressure-screen operation and troubleshooting and paper-mill cleaner process stages before approving the vessel. Otherwise, “low power consumption at the pulper” can be paid back as pumping, clogging of the screen, fiber loss, or cleaning downtime elsewhere.

The Contaminant-to-Exit Boundary Trace

Contaminant-to-exit boundary trace: name the worst objects, keep them large, draw every exit, apply peak load, bind acceptance

The Contaminant-to-Exit Boundary Trace maps each worst-case incoming object to the outlet, load, duty, and downstream capacity that must handle it. It’s a scope-mapping method, not a model selector. A quotation fails the trace when its attractive type name depends on reject equipment, water, controls, or maintenance work that the supplier leaves outside scope.

Name the worst incoming objects. List wire, plastic film, tape, wet-strength flakes, glass, sand, wood, metal, and other prohibitives by mass and size.
Decide what must remain large. Ask which contaminants should survive pulping so a ragger, junk trap, or coarse screen can remove them.
Draw every exit. Mark accepts, stringing rejects, heavy junk, light rejects, wash water, recovered fiber, and final disposal.
Apply the peak load. Use the worst bale and the maximum feed interval, not an average sample chosen for a demonstration.
Check the next bottleneck. Confirm pump, chest, pressure screen, cleaner, flotation, and waste-handling capacity at the resulting flow and consistency.
Bind the result to acceptance. Put contaminant size, fiber loss, throughput, energy, water, and cleaning response into the test protocol.

An old EPA-hosted technical report made the core limitation clear: equipment requirements vary with furnish, the character and amount of foreign particles, and stock volume. A newer patent example shows one process breaking recovered paper above 8% solids while trying to keep plastic film relatively firm, with a coarse-screen overflow described around 20–30% of feed flow. Those are historical and patent-specific values. The portable lesson is to preserve a removal path, not to reuse the percentages.

The cheapest pulper vessel can become the most expensive stock preparation system when reject handling, dilution, screen capacity, or safe cleaning access appears only after the purchase order.

Build an RFQ That Makes Different Pulper Types Comparable

Eight RFQ input groups that make pulper quotes comparable, from furnish and bale data to safety, service and acceptance evidence

Pulper boundary-trace findings become a useful RFQ only when the same eight input groups go to every supplier. This checklist doesn’t set an unsupported recommended range. Instead, it records the measured plant value, asks the vendor for a warranted response, and names the test that will decide acceptance.

Pulper RFQ checklist — copy these eight groups into every quote request:

Parameter	Plant value / vendor declaration	Why it matters	How to verify
1. Furnish and bale data	Grade mix, bale size, moisture, ash, seasonal range	Sets wet-out, circulation, and usable fiber basis	Representative and worst-bale sampling
2. Contaminants and chemistry	Wire/plastic/adhesive/wet-strength load; pH, heat, deinking route	Changes fragmentation, flakes, washing, and flotation	Sort test, stickies/flake method, recipe boundary
3. Throughput and duty	ADT/day, peak bale interval, hours/day, grade changes	Separates average capacity from feed and cleaning reality	Timed cycle or continuous mass balance
4. Consistency window	Inlet, normal, maximum, discharge, measurement point	Affects capacity, defibering, dilution, and contaminants	Calibrated solids sampling at named points
5. Geometry and cycle	Drum/D-type/rotor; batch/continuous; supported combinations	Prevents labels from being compared across axes	GA drawing, P&ID, sequence and control narrative
6. Reject and downstream route	Ragger, junk, light/heavy rejects, wash/dewater, screens/cleaners	Exposes hidden equipment and fiber loss	Reject mass balance and upset-case trial
7. Utilities and environment	Water m³/t, energy kWh/t, drains, emissions, waste route	Makes vessel efficiency comparable at installation level	Metered acceptance period and permit/interface review
8. Safety, service, and acceptance	Opening height, manual charge, guarding, entry isolation, spares, tests	Changes layout, maintenance time, and legal comparability	Drawing review, lockout walkdown, FAT/SAT evidence

For US installations, OSHA 29 CFR 1910.261(j)(5) is more than a maintenance footnote. Pulper openings below 42 in (107 cm) require guarding or an equivalent enclosure; the rule also addresses manual charging, fall protection, an outside observer and lifeline for entry, and lockout or tagout of steam, water, and other controls. Local law and the plant’s own safety standard may add requirements.

The European Commission’s pulp-and-paper BAT reference covers recovered-paper processing with and without deinking alongside raw materials, water, energy, emissions, and waste. It does not declare one pulper type to be BAT. It does show why a vessel-only quote is incomplete.

Use the RFQ board with the complete pulping equipment and stock-preparation line page; when recovered furnish is in scope, add the waste paper OCC recycling line solution to the same review. Henan Zejiang Paper Machinery Co., Ltd. describes its scope as equipment design, manufacturing, refurbishment, installation, and technical support. That organizational capability does not replace model data; it gives the engineering discussion a defined handoff. Henan Zejiang’s public pulper selector can organize the first pass, but the RFQ and trial remain decisive.

Have a furnish and reject problem, not just a pulper name?

Send the eight input groups so the discussion starts from your actual stock preparation duty.

Discuss Your Pulper Duty

What Is Changing in 2025–2026 Pulper Selection

2025-2026 pulper selection loop: variable recovered furnish, wear history, reject adjustment, manual fallback and retrofit access

The strongest current change isn’t a universal new pulper family. It is greater pressure to handle variable recovered paper, see wear before failure, adjust reject removal, and fit upgrades into existing buildings and stock preparation lines. Search-demand trend data showed directional movement for “drum pulper” and “paper mill pulper,” but the exact focus phrase had insufficient history; no market-growth percentage belongs here.

The PITA-hosted practitioner article from Aikawa Fiber Technologies (AFT), dated 27 April 2025, describes batch-to-batch raw material variation, changing detrashing demand, wear in rotors and screening parts, and the use of historical flow, power, and pressure values to plan maintenance. Its association host does not make the commercial practitioner source independent, so it supports RFQ questions rather than a guaranteed outcome.

One 2025 ragger patent application points in the same direction. It proposes sensing tail size, density, slippage, metal content, production rate, recycled-to-virgin furnish ratio, slurry consistency, and temperature, then adjusting pull rate, pressure, torque, or speed. One patent shows the technical direction; it does not show how many installations have achieved the claimed result.

Ask for historian tags and alarm logic, not an “automatic” label.
Specify manual fallback and safe clearing when a sensor or ragger fails.
Check retrofit access, floor level, foundations, chests, pumps, valves, and cable routes.
Buy drawings and wear-part records so a future replacement is not a reverse-engineering exercise.
Include a variable-furnish acceptance run rather than one clean demonstration bale.

Frequently Asked Questions

What are the main types of pulpers used in paper mills?

The main labels include drum, D-type, vertical or horizontal rotor, high/medium/low consistency, batch, continuous, and broke pulpers, but those labels describe different classification axes rather than exclusive machine families.

They do not form one exclusive list. Drum and D-type describe mechanism or geometry; consistency labels describe pulp concentration; batch and continuous describe operating cycle; broke describes process duty. One paper pulper may carry several labels at once. Classify the quote on all four axes, then compare furnish, reject route, utilities, safety layout, and acceptance evidence.

What raw materials can a pulper machine process?

Pulper machines can process market pulp, paper machine broke, OCC, mixed recovered paper, and other fiber-based furnish when the design and stock preparation route match the material.

The important fields are bale form, moisture, wet strength, coatings, adhesives, plastic, wire, ash, and variability. Clean wood pulp or virgin fiber presents a different duty from waste paper bales with prohibitives. Wet-strength paper and deinking furnish can need extra time, heat, chemistry, washing, flotation, or refining. A material type should be trialed under the proposed operating window.

What detrashing equipment is used with pulpers?

Common detrashing equipment includes a ragger, junk trap or junk remover, detrasher, reject screen, wash drum, dewatering equipment, pressure screens, and cleaners, each assigned to a different contaminant fraction.

Each item handles a different fraction. A ragger targets long stringing material; heavy junk needs a gravity or centrifugal path; light contaminants may need washing and dewatering; smaller impurities reach coarse screens and cleaners. The RFQ should show every accept, reject, water, and recovered-fiber stream. Otherwise contaminants from the pulp can simply move downstream.

Is a drum pulper always better for recycled paper?

No. A drum pulper may suit a duty that values gentle slushing and coarse separation, but plant fit decides the result under the stated furnish, reject route, and downstream screening limits.

Compare furnish variability, layout, feed preparation, accepts, reject washing, downstream screening, water and energy, maintenance access, and the warranted trial. A compact D-type or another hydrapulper may fit a different constraint better.

What is the cost of a pulper machine?

A defensible price requires a defined furnish, throughput, consistency window, reject route, utilities, controls, safety layout, installation scope, and acceptance test in one documented supply boundary.

Two offers with the same nominal capacity can exclude different conveyors, raggers, junk removal, detrashing, wash drums, pumps, chests, piping, instruments, platforms, guarding, commissioning, and spares. Ask for an included/excluded register and a metered acceptance period. Separate the vessel price from controls, freight, civil work, erection, utilities, initial wear parts, operator training, and performance testing. Also define the currency, trade term, validity date, tax handling, and warranty boundary. Without that scope, a low equipment price can hide water, energy, downtime, fiber loss, or downstream upgrades. Henan Zejiang can review a complete paper mill duty, but no model price is invented in this guide.

Can one pulper handle both virgin and recycled furnish?

Sometimes, but only when the model’s operating window, cleaning sequence, and reject equipment cover both duties, and the supplier verifies each furnish under a separate acceptance run.

Virgin pulp emphasizes wet-out and disintegration. Recycled paper adds wire, plastic, adhesives, ash, and other contaminants. Ask the supplier to test both the clean furnish and the worst recovered-paper mix, state changeover steps, and guarantee the accepts and rejects for each recipe.

Buying rule

Use the Pulper Label Normalization Register to standardize names, then use the Contaminant-to-Exit Boundary Trace and eight RFQ groups to expose the real system scope.

References & Sources

These sources carry the technical and safety claims in this guide. Commercial practitioner and first-party case sources appear only when the body identifies their origin and narrows their use; generic vendor pages and competitor articles used only for search-context analysis are excluded. Laboratory, patent, and first-party case data remain bound to the scope stated in the body.