L-Bar Shrink Sealing Equipment KPW-FL450 | PLC, 3–5kW

The L-bar shrink sealing equipment KPW-FL450 is the robust industrial version of the L-sealer with integrated shrinking, with PLC control and a dedicated touchscreen, an installed power of 3–5 kW, a maximum bag length of 450 mm, a compatible film thickness of 0,02–0,08 mm, a rate of 10–25 bags per minute, 220V/380V supply and a net weight of 150–250 kg — designed for continuous industrial use over multiple shifts, where lighter equipment does not provide the thermal stability and mechanical reliability required by an uninterrupted production flow.

The L-bar shrink sealing equipment KPW-FL450 combines automatic L-shaped sealing and integrated heat shrinking in a single unit with an industrial mass and construction: the L-shaped sealing bar simultaneously applies the front and side seam of the bag, cuts the film, and the product passes immediately into the integrated shrink zone, exiting fully shrink-wrapped, with no intermediate transfers. The PLC control with touchscreen allows recipes to be saved per product, parameters to be monitored in real time and any operating errors to be quickly diagnosed. Key Advantages of the L-Bar Shrink Sealing Equipment KPW-FL450

• PLC control with touchscreen — savable recipes per product, fast diagnostics — the L-bar shrink sealing equipment KPW-FL450 is controlled by an industrial PLC with a dedicated touchscreen, unlike models with a simple LCD panel; the PLC stores parameter recipes per product (sealing and shrinking temperatures, conveyor speed, cycle time), the operator selecting the recipe from the list when changing product without manually re-entering the parameters; error diagnostics are displayed on the touchscreen with an error code and description, reducing the time to identify and remedy problems.

• Power 3–5 kW — thermal stability for thick film and continuous production — the L-bar shrink sealing equipment KPW-FL450, with 3–5 kW power, keeps the sealing and shrinking temperature stable at high volumes of continuous production; lower-power equipment loses sealing temperature at high rates or on thicker films (0,06–0,08 mm), producing incomplete seals; the higher power ensures the temperature quickly returns to the set value after each sealing cycle, regardless of the production rate.

• Weight 150–250 kg — industrial mass for stability without vibration — the L-bar shrink sealing equipment KPW-FL450, weighing 150–250 kg, has a structural mass that eliminates sealing-bar vibration at high production rates; lightweight equipment moves on the workshop floor at high conveyor speeds and produces seals shifted from the centre of the bag; the industrial mass of the KPW-FL450 ensures that the sealing bar descends and returns along the same path on every cycle.

• Film thickness 0,02–0,08 mm — full range from ultra-thin to thick films — the L-bar shrink sealing equipment KPW-FL450 processes shrink film from 20 µm (thin POF films for cosmetics and pharmaceuticals) up to 80 µm (thick PE films for industrial products); this full range allows the equipment to be used with any film supplier and for any application, with no minimum or maximum thickness restriction.

• Bag max 450 mm length — full coverage for standard retail and industrial formats — the L-bar shrink sealing equipment KPW-FL450 processes bags up to 450 mm long, covering standard retail formats (cosmetic product boxes, food sets, medium-sized toys) and industrial formats (individually packaged components, small parts grouped together, technical devices).

• 220V/380V supply — flexibility for any electrical installation — the L-bar shrink sealing equipment KPW-FL450 is available in 220V single-phase and 380V three-phase configurations; at the 3–5 kW power, three-phase supply at 380V is preferred for uniform distribution of the load across phases; the configuration is chosen at order time together with UZINEX engineers according to the available electrical panel.

• Automatic sealing on product detection — full cycle with no manual actuation per package — the L-bar shrink sealing equipment KPW-FL450 automatically detects the presence of the product on the conveyor and triggers the full sealing, cutting and shrinking cycle; the operator feeds the products at the inlet and collects them packaged at the outlet, with no per-cycle actions; full cycle automation reduces sealing-quality variability and operator fatigue during intensive production.

• Anti-jam protection system — automatic shutdown on error without damaging the product — the L-bar shrink sealing equipment KPW-FL450 has sensors integrated in the sealing bar and on the conveyor that detect jams or incorrectly positioned products and automatically stop the cycle before the overheated bar damages the product or the film; the error code appears on the PLC touchscreen and the operator can remedy the situation and resume production without a complex parameter reset.

Technical Specifications — L-Bar Shrink Sealing Equipment KPW-FL450

The L-Bar Shrink Sealing Equipment KPW-FL450 versus the Other FL Models in the Range

The UZINEX range of L-sealers with integrated shrinking includes three models with distinct technical characteristics; the correct choice depends on the required film width, the power demanded by the type of film and the production volume:

• The L-bar shrink sealing equipment KPW-FL450 (this model) — the robust industrial version with PLC and touchscreen, 3–5 kW power, 150–250 kg weight; suitable for intensive continuous production over multiple shifts, film up to 80 µm thick and products with a bag length up to 450 mm; the PLC with savable recipes reduces format changes to a few seconds.

• The L-bar shrink sealing device KPW-FL450-2 — the compact version with an LCD panel, reduced footprint, film max 450 mm wide; suitable for medium-volume packaging stations with limited space, without requirements for saving multiple recipes or PLC diagnostics.

• The L-bar shrink sealing machine KPW-FL550 — the version with wider film of 550 mm; suitable for products whose cross perimeter exceeds the capacity of 450 mm film; the same family of equipment, sized for larger formats.

Applications — What Products the L-Bar Shrink Sealing Equipment KPW-FL450 Packages

• Food industry — continuous production over multiple shifts — the L-bar shrink sealing equipment KPW-FL450 is chosen for food packaging lines operating on 2–3 shifts, where the thermal stability of the PLC and the 3–5 kW power ensure the consistency of the sealing temperature throughout the shift; frozen products, portioned refrigerated products, trays with fruit and vegetables, individually packaged culinary preparations.

• Pharmaceutical industry — parameter control and traceability through the PLC — the L-bar shrink sealing equipment KPW-FL450 with PLC control allows monitoring and recording of sealing parameters per production batch, useful in pharmaceutical compliance audits; the tamper-evident packaging with tightly shrunk POF or PVC film meets the tamper-resistance requirements of pharmaceutical products.

• Cosmetic and personal-care products — multiple formats with fast recipe changes — the L-bar shrink sealing equipment KPW-FL450 with PLC-saved recipes allows cosmetics manufacturers to switch quickly between different formats (small sets, individual boxes, promotional packs) by selecting the recipe from the touchscreen, without manual adjustments at every product change.

• Industrial components and technical parts — the L-bar shrink sealing equipment KPW-FL450 packages, in shrink film, industrial components, spare parts and individual technical accessories; the shrunk packaging protects metal surfaces against moisture, dust and scratches in storage and transport, with a bag length up to 450 mm covering the standard range of small and medium technical components.

• Retail and consumer products — high volume of uniform products — the L-bar shrink sealing equipment KPW-FL450 at 25 bags per minute produces 1.500 packages per hour in continuous operation; for retail lines with volumes of thousands of packages per day, the mechanical and thermal stability of the industrial equipment ensures sealing uniformity from the first bag of the day to the last, without quality degradation throughout the shift.

• Printers and promotional materials — the L-bar shrink sealing equipment KPW-FL450 packages catalogues, brochures, calendars and promotional kits in transparent high-gloss POF film; the PLC recipes allow quick switching between packaged publication formats without long stoppages for adjustments.

The Complete Packaging Cycle of the L-Bar Shrink Sealing Equipment KPW-FL450

The L-bar shrink sealing equipment KPW-FL450 completes shrink packaging in four automatic, PLC-controlled stages, all integrated within the same industrial body:

• Stage 1 — Product feeding and centring — the operator places the product on the conveyor of the L-bar shrink sealing equipment KPW-FL450; the shrink film from the roll forms a flat tube open at both ends, in which the product advances centred towards the L-shaped sealing bar; the PLC detects the presence of the product via the inlet sensor and prepares the sealing cycle.

• Stage 2 — L sealing and cutting — the sealing bar of the L-bar shrink sealing equipment KPW-FL450 descends and simultaneously applies the perpendicular front seam and the side seam parallel to the product; the integrated blade cuts the film simultaneously with the sealing; the 3–5 kW power ensures the bar temperature immediately returns to the value set in the PLC for the next cycle.

• Stage 3 — Integrated heat shrinking — the sealed product passes automatically into the integrated shrink zone of the L-bar shrink sealing equipment KPW-FL450; the temperature and exposure time are controlled by the PLC according to the saved recipe; the film shrinks uniformly over all surfaces of the product, fully conforming to its contour.

• Stage 4 — Discharge and cycle restart — the finished package exits onto the discharge belt of the L-bar shrink sealing equipment KPW-FL450, ready for labelling or shipping; the PLC records the cycle and immediately prepares the bar for the next product; at 25 bags per minute, the complete cycle takes under 2,5 seconds per package.

Frequently Asked Questions about the L-Bar Shrink Sealing Equipment KPW-FL450

What is the practical difference between PLC control and a simple LCD panel on L-bar sealing equipment?

The L-bar shrink sealing equipment KPW-FL450 with a PLC allows saving and recalling parameter recipes per product, real-time monitoring of all operating values, error diagnostics with code and description, and optional integration with SCADA or line-monitoring systems; the simple LCD panel on the more compact models displays and allows parameter setting but does not save recipes and does not offer advanced diagnostics — the choice depends on the complexity of the operations and the number of different formats produced. What does "maximum bag length 450 mm" mean versus "maximum film width 450 mm"?

The L-bar shrink sealing equipment KPW-FL450 has a limit of 450 mm on the bag length (the dimension parallel to the conveyor advance direction); the compatible film width is separate and depends on the mounted film roll; for a product 300 mm long with 200 mm width and 80 mm height, the bag length is 300 mm (below the 450 mm limit) — so the product is compatible; UZINEX engineers calculate the exact compatibility on request. Does the L-bar shrink sealing equipment KPW-FL450 require compressed air?

No. The L-bar shrink sealing equipment KPW-FL450 operates exclusively on electricity at 220V or 380V; no compressed-air installation or additional compressor is required; an electrical connection at the voltage configured at order time is sufficient for full operation. Can the L-bar shrink sealing equipment KPW-FL450 work with PVC film?

Yes. The L-bar shrink sealing equipment KPW-FL450 is compatible with shrink PVC film; when using PVC film, adequate ventilation of the work area is necessary because PVC releases fumes during sealing; UZINEX engineers provide the specific temperature-parameter recommendations for PVC film at commissioning. Why Choose UZINEX for the L-Bar Shrink Sealing Equipment KPW-FL450

The L-bar shrink sealing equipment KPW-FL450, with its 3–5 kW power and PLC control, is industrial equipment whose correct commissioning — calibrating the bar temperature relative to the shrinking temperature, programming the PLC recipes and testing on the specific film and products — directly determines the packaging quality and long-term reliability.

• Pre-purchase consultancy — confirming compatibility with your products and film — UZINEX engineers analyse the product dimensions, the thickness and type of the desired film, the required production rate and the workshop's electrical configuration to confirm that the L-bar shrink sealing equipment KPW-FL450 is suited to the application and that the correct supply voltage (220V or 380V) is configured at order time.

• Free shipping and commissioning included — the L-bar shrink sealing equipment KPW-FL450 is delivered free of charge anywhere in Romania; at commissioning, UZINEX engineers program the PLC recipes for the customer's products and film, calibrate the sealing and shrinking temperatures, set the conveyor speed and train the operators in using the touchscreen, saving new recipes and the bar-cleaning procedure.

• Extended 60-month warranty and spare parts in stock — the L-bar shrink sealing equipment KPW-FL450 benefits from a 60-month warranty; the wear components — the L sealing bar heating elements, the teflon strips, the shrink-zone heating elements, the PLC sensors — are kept permanently in stock at UZINEX for rapid intervention with no import wait times.

• National service with 24–48h response — UZINEX service engineers with PLC expertise intervene on site anywhere in Romania; the L-bar shrink sealing equipment KPW-FL450 with PLC control allows remote diagnostics via the error code shown on the panel, reducing the time to identify the problem before the technician arrives.

• Financing through credit and leasing — financing solutions available for the purchase of the L-bar shrink sealing equipment KPW-FL450; the equipment qualifies for EU-funded projects as an investment in the automation and digitalization of the primary packaging line.

• Complete range for shrink packaging — UZINEX offers complete solutions for shrink packaging: the L-bar shrink sealing equipment KPW-FL450 for intensive industrial production, the FL450-2 and FL550 models for medium volumes and different formats, the BSE6040A tunnel for standalone industrial shrinking and the sleeve wrapping machines for long products — all available with integrated national service.

The L-bar shrink sealing equipment KPW-FL450 is the choice for manufacturers packaging over multiple shifts, with multiple formats and film up to 80 µm thick — automatic L sealing with an industrial PLC, 3–5 kW power for thermal stability and 150–250 kg mass for mechanical stability, with no compromises compared with compact equipment with a simple LCD panel.