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Chemical Filling and Capping Machines
Cap Coder builds liquid filling machines, container filling machines and capping machines for UK chemical manufacturers, from household cleaning products and garden chemicals through to industrial cleaners, lubricants, solvents, adhesives and speciality formulations. Each line is specified around what your product does to seals, metal and the air around it, the containers and closures it ships in, and the hazard classification it carries, rather than adapted from a line designed for something more benign.
What Chemical Manufacturers Need to Work Out Before Buying a Filling or Capping Machine
Chemical products span a wider range of hazards than almost any other sector a filling line serves. A mild surfactant cleaner and a flammable solvent can share a bottle shape and very little else. Before a supplier can quote sensibly, it needs to know how the product behaves, how it is classified, where it is being filled and how it will travel once it leaves the line. Your product’s safety data sheet answers a good part of this, and is usually the first document a supplier will ask for.
Product behaviour and chemical compatibility
- Viscosity across the full range you run, from water-thin solvents and acids through to oils, gels, pastes and adhesives
- Compatibility of every wetted part, including seals, tubing and nozzles, with the acids, alkalis, oxidisers, solvents or oils in the formulation
- Foaming, stringing or dripping behaviour, which shapes nozzle design, drip control and how the fill is positioned relative to the container neck
- Off-gassing products, such as some hypochlorite or peroxide formulations, that may need vented closures
- Whether fill should be controlled by volume or by net weight, particularly where density shifts with temperature or batch
Hazardous areas and operator exposure
- Whether filling a flammable product creates a zoned area under DSEAR, and which zone, since that governs the build of every electrical and mechanical component nearby
- The UKEX or ATEX equipment category and marking needed for anything installed in that zone, under the Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres Regulations 2016
- Exposure control under COSHH, including local exhaust ventilation at the filling head where vapour or mist is released
- Drip trays, spill containment and bunding beneath the machine, and how a spill is cleared without putting operators in contact with the product
- Splash guarding for corrosive products, and how gloves, visors and other PPE affect the way operators use the HMI and carry out changeovers
Throughput and line integration
- Required output in units per minute or per shift, and the balance between small retail packs and larger trade sizes
- How many products and SKUs share the line, and whether any of them are chemically incompatible with one another
- The flushing and cleaning regime between products, including how wash water or solvent is collected and disposed of
- Upstream and downstream integration: bulk supply from an IBC or tank, labelling, induction sealing, case packing and coding for traceability
- Whether volumes justify full automation now, or whether a semi-automatic line with a defined upgrade path makes more sense today
Containers, closures and child safety
- Container format and size range: trigger bottles, HDPE bottles, jars, tins and larger trade or industrial packs
- Closure type: screw caps, trigger sprays, child-resistant closures, tamper-evident caps, vented caps or induction-sealed wads
- Whether the GB CLP classification of a product sold to the general public means it must carry a child-resistant fastening or a tactile warning of danger
- For reclosable child-resistant packs, the BS EN ISO 8317 performance the closure is tested to, and the application torque needed to keep it working as designed
- Batch, lot and date coding, and whether CLP hazard labelling is applied on the same line
Regulatory and transport requirements
- Classification and labelling under GB CLP, which sets hazard pictograms, signal words and certain packaging requirements for each product
- For products shipped as dangerous goods, UN-approved packaging closed in line with the packaging manufacturer’s closing instructions, which often specify an application torque
- For disinfectants and sanitising products, whether the product is a biocide, regulated in Great Britain by the Health and Safety Executive
- Registration and supply chain obligations under UK REACH, which may affect which formulations end up on the line and how often they change
- CE/UKCA marking of the finished machine, with the technical file and Declaration of Conformity to support it
Commercial and lifecycle support
- Realistic lead time from order to a tested line, allowing for any hazardous area build and the extra documentation it brings
- Availability of seals, tubing and other wear parts that see chemical attack and need replacing on a planned schedule
- UK-based service and calibration support, and whether visiting engineers are competent to work on hazardous area equipment
- Operator training and the documentation pack supplied with the machine, Declaration of Conformity included
- Whether the supplier can re-specify wetted materials if a formulation changes later, rather than leaving you with an incompatible machine
Packaging Machinery Built to UK and EU Safety Standards
Chemical filling brings its own hazards, but the machine underneath still has to meet general machinery safety law first. Every Cap Coder machine is designed and built against the Machinery Directive (2006/42/EC) and the UK Supply of Machinery (Safety) Regulations 2008, and is supplied CE marked with a Declaration of Conformity as standard. Hazards are identified while the machine is still being designed, so the protection your operators rely on is part of the engineering rather than an afterthought fitted to a finished frame.
CE Marked Filling and Capping Machines
Each machine is supplied with CE marking and a Declaration of Conformity, backed by a technical construction file that is retained for the working life of the machine.
Risk Assessment on Every Build
Every build goes through a structured risk assessment, with the aim of removing hazards at the design stage before relying on guards, warnings or working procedures to control what remains.
Machine Guarding, Interlocks & Light Curtains
Guarding, interlocks and, where needed, light curtains or safety scanners are selected for the real hazards of your process, including splash and spray risks from corrosive or irritant products.
Safety-Rated Emergency Stop Circuits
Emergency stop and interlock circuits are designed to a defined performance level, so they respond predictably whenever an operator or guard door calls on them
Declaration of Conformity & Full Documentation
The machine arrives with its Declaration of Conformity, user manual, electrical and mechanical drawings and maintenance guidance, giving your team the information needed to operate, inspect and maintain it in line with PUWER.
Built Around Your Operators
Straightforward HMIs, clear access for changeovers and cleaning, and controls that can be used with the gloves and PPE your chemical products require, because filling and capping machines that are easy to operate correctly are safer machines.
EU/UK Standards
Design is carried out with reference to harmonised EU/UK standards, including EN ISO 12100 for risk assessment and risk reduction, EN ISO 13849 for safety-related parts of control systems, and EN 60204-1 for the electrical equipment of machines. The standards applied to an individual machine are listed in its technical file and Declaration of Conformity.
Filling and Capping Machine Range Cap Coder Provides to Chemical Manufacturers
Cap Coder has manufactured filling, capping and labelling machinery in the UK since 1976. The current range, from the Sigma Fill through to the CC1160, is specified for chemical manufacturers who need fill accuracy that holds across very different products, closures applied at a controlled and recorded torque, and a machine built for the hazards of the product rather than one that simply tolerates them.
Chemical liquid filling machines
Volumetric, piston and peristaltic filling heads chosen against the viscosity, foaming and dripping behaviour of the product, from thin solvents and cleaners through to oils, gels and adhesives, with nozzles and drip control designed so product ends up in the container and not on the outside of it.
Wetted parts specified for the chemistry
Product contact parts, seals and tubing selected against the formulation on your safety data sheet, whether that calls for 316L stainless steel or a compatible polymer and elastomer for products that would attack stainless steel over time.
Bottle, jar and trigger-pack filling machines
Container filling machines set up for the bottles, jars and trigger packs in your range, with format parts built for quick changeover between pack sizes, so a line running consumer and trade sizes does not lose half a shift each time it switches.
Capping machines for hazardous products
The CC570 semi-automatic inline capper applies consistent torque at up to 35 bottles per minute. On a chemical pack that consistency is a safety matter: an under-tightened cap can leak a hazardous product in transit, and an over-tightened one can strip a thread or stop a child-resistant closure working as intended. Quick-release tooling allows format changes in around five minutes, and a Zone 1 or Zone 2 ATEX build is available for flammable products, with FAT/SAT documentation supplied.
Torque transducers for a recorded closure
Fitted to the capping head, an independently calibrated, UKAS-traceable torque transducer measures both application and release torque to within 0.1% resolution, shows live readings on the HMI and exports to CSV, XML or a US Digital-compliant file. Sampling can be set to one closure in every 10, 20 or 50, and any out-of-tolerance closure is rejected or flagged. Where dangerous goods packaging instructions specify a closing torque, this gives you a calibrated record that it was met.
Builds for zoned areas
For solvents, alcohol-based cleaners and other flammable products, capping machines can be built for Zone 1 or Zone 2 areas, including an all-pneumatic control option for the more demanding zone, so the machine suits the classification your DSEAR assessment arrives at.
Semi-automatic to fully automatic pathways
Start with semi-automatic chemical filling and capping machines while a product range is establishing itself, then move to full automation as volumes grow, keeping the format tooling and wetted-part specification already proven on your products.
Chemicals FAQs
GENERAL ANSWER
It depends on the outcome of your DSEAR risk assessment. If filling creates a zoned area, any equipment installed there must be of the right category for that zone and marked accordingly. Zone classification is the responsibility of the employer operating the line, not the machine supplier.
CAP CODER’S APPROACH
We ask for your zone classification at the enquiry stage and build to it, with Zone 1 and Zone 2 capping options, including all-pneumatic control for the more demanding zone.
GENERAL ANSWER
Under GB CLP, certain hazardous substances and mixtures supplied to the general public must be sold with child-resistant fastenings, and some must also carry a tactile warning of danger. Whether a particular product is caught depends on its hazard classification, which is a question for your own regulatory advisers.
CAP CODER’S APPROACH
Once you know which closure you need, we set the capping process around the torque range the closure manufacturer specifies, and can record it, so the closure performs as it was tested to.
GENERAL ANSWER
UN-approved packaging is tested with its closure applied in a specific way, and the packaging manufacturer’s closing instructions usually state how that should be repeated in production, often as a torque value. A pack closed outside those instructions may no longer perform as it did when tested.
CAP CODER’S APPROACH
A calibrated torque transducer on the capping head measures application and release torque on a sample you set, rejects closures outside tolerance and exports the readings, giving you evidence that each batch was closed as instructed.
GENERAL ANSWER
Often, provided every product is compatible with the wetted parts and there is an effective flushing regime between runs. Products that react with each other, such as acids and hypochlorite, need particular care, and in some cases separate lines or dedicated contact parts are the safer option.
CAP CODER’S APPROACH
We capture your full product list at the specification stage, so material choices, cleaning access and changeover parts cover everything the line will run, not just the product you are quoting for today.
CAP CODER’S APPROACH
Every machine comes with guarding, interlocks and emergency stops as standard. Where the risk assessment for your process calls for more, such as additional splash protection, light curtains, safety scanners or integration with wider line safety systems, we add it.
Specifying a Chemical Filling or Capping Line?
Share your product, container, cleanroom grade and validation requirements and Cap Coder’s engineering team will work through the specification with you before quoting.
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