Heat Sealer for Biodegradable Packaging
Heat Sealer for Biodegradable Packaging
Heat sealers for biodegradable packaging need precise temperature control. Bio-films like PLA, cellulose, and NatureFlex have narrow seal windows — too hot and they shrink or burn, too cool and the seal fails. We stock temperature-controlled impulse sealers, foot pedal sealers, and continuous band sealers from £134.99, all suited to compostable and sustainable packaging films.
Why biodegradable films need temperature-controlled sealers
Conventional polythene seals across a wide temperature range. Biodegradable films do not. PLA-based packaging typically seals between 120–160°C, while cellulose films like NatureFlex need even tighter control at 130–150°C. Go outside these windows and you get weak seals, film distortion, or burn-through.
That means the sealer matters. A machine with adjustable heat timers — or better, digital temperature control — lets you dial in the exact settings for each bio-film. The Audion Magneta 621MG offers digital control of heat and cooling times, making it one of the most precise impulse sealers we stock for biodegradable packaging. For standard compostable films at lower volumes, an adjustable-timer foot pedal sealer like the 400mm Foot Pedal Sealer handles the job from £134.99.
Types of heat sealer for sustainable packaging
Impulse sealers heat only during the seal cycle, then cool under pressure. This controlled approach suits biodegradable films because the element does not stay hot between seals. The Hulme Martin HM 1300 CD adds dual-timer control (heat and cool separately), giving you fine adjustment for different compostable materials.
Continuous band sealers run bags through heated rollers at a set speed and temperature. The PSC980 offers 0–300°C temperature control with adjustable conveyor speed — ideal for production-line sealing of bio-film pouches where you need consistent results at volume. If you also seal standard polythene bags, a band sealer with variable temperature handles both materials without swapping machines.
Foot pedal sealers free both hands for positioning bags. For biodegradable packaging at low to medium volume, the PSF4510 delivers a 10mm seal width with adjustable timer control.
Biodegradable packaging and the UK Plastic Packaging Tax
The UK Plastic Packaging Tax charges £217.85 per tonne on packaging with less than 30% recycled content. Many businesses are switching to biodegradable and compostable alternatives to reduce or eliminate this liability. Extended Producer Responsibility (EPR) regulations add further cost pressure on non-recyclable packaging.
Switching films often means switching — or upgrading — your sealer. Bio-films like PLA and cellulose have different seal characteristics to conventional polythene. A sealer with temperature control pays for itself quickly when it prevents wasted film from failed seals. If you are also packing food products, food-safe compostable films typically require tighter temperature tolerances than industrial bio-packaging.
Matching your sealer to your film type
Home compostable films (certified to EN 13432 for home composting) tend to be thinner and seal at lower temperatures. Industrial compostable films are often thicker and need more heat energy. PLA blends vary widely between manufacturers — always test a sample before committing to a production run.
Cellophane and NatureFlex films seal well with impulse sealers that have adjustable timers. For recyclable paper-film laminates, a wider seal (8–10mm) gives a stronger bond. If you are unsure which machine suits your packaging, call us on 0121 704 0294 — we test films against our sealers daily and can recommend the right fit in minutes.
Heat sealers for biodegradable packaging
Replacement parts for sealers we sell
Temperature controllers, heater cartridges, drive belts, and speed controllers for continuous band sealers. Element wire and PTFE tape for impulse sealers. Keep spare consumables on hand to avoid production downtime.
Shop Spare Parts →What customers say
"They tested heat sealers on some sample bags I sent them to confirm suitability, even though the sale was relatively low value. Ultimately the unit I ended up purchasing was perfect for my needs."
"Packsealer helped us choose the best vacuum sealer for our application and its now working flat out."
"Wasn't sure which machine was most suitable for my requirements, phoned up and spoke to very friendly and knowledgeable staff member. Ordered a machine based on their advise and it's just what I needed. Would highly recommend."
Common questions
Some can, but results are inconsistent. Biodegradable films like PLA and cellulose have a much narrower seal window than standard polythene. A basic sealer without adjustable timers may overheat the film or produce weak seals. For reliable results, use a sealer with adjustable heat and cooling timers — or digital temperature control.
It varies by material. PLA-based films typically seal between 120–160°C. Cellulose films like NatureFlex need 130–150°C. Starch-based bio-films may need lower temperatures. Always run a test seal on sample material before production — manufacturers’ data sheets give starting points, but real-world testing is essential.
Yes. Both PLA and cellulose films are heat-sealable. The key is using a sealer with adjustable settings. Impulse sealers with timer control (like the Hulme Martin HM 1300 CD) and continuous band sealers with temperature dials (like the PSC980) both work well with these materials.
Not necessarily a different machine, but different settings. Home compostable films are generally thinner and seal at lower temperatures. Industrial compostable films are thicker and need more heat energy. A sealer with adjustable timers or temperature control handles both — you just dial in different settings for each material.
The UK Plastic Packaging Tax charges £217.85 per tonne on packaging with less than 30% recycled content. Switching to biodegradable or compostable films can reduce or eliminate this cost. However, bio-films need sealers with temperature control to seal reliably — so upgrading your sealer is often part of the switch to sustainable packaging.
Not sure which sealer is right? Our free assessment matches you in two minutes.
Find My MachineFind the right heat sealer for your biodegradable packaging
Temperature-controlled sealers from £134.99. UK stock, fast dispatch, and expert advice on 0121 704 0294.
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