Used Ishida - Rovema - Paal Bag Forming, Filling And Sealing Machine for sale (72,673)

Condition: used, This line was filling trays of coleslaw and potato salad. 3 lane machine with 2 x 3 head depositors. Ppjdpfoqpd Svox Ampjr

Condition: excellent (used), Year of construction: 2009, functionality: fully functional, 1 x G. Mondini S.p.a. inline heat sealing machine fitted with ICE Zodiac thermal transfer overprinter. Supplied with User Manual, Electrical Diagrams, 4 x sets of tooling with arms for different sized punnets and 1 x tool trolley. Model – SF 90. Serial number – 3713/09-1. Date of manufacture – 2009. Tooling set 1 - Infia K62, 4 x 1 format, square punnets 163mm long x 163mm wide (approx). Tooling set 2 - Proseal SPL, 2 x 1 format, 270mm long x 174mm wide (approx). Tooling set 3 - T1478X PS48213, 5 x 1 format, 174mm long x 132mm wide (approx). Ppodpfx Asy Hl E Sompor Tooling set 4 - details TBC. Overall dimensions - 4220mm long x 900mm wide x 2150mm high. Tooling trolley dimensions - 1300mm long x 750mm wide x 1750mm high.

Condition: used, Year of construction: 2004, The Tortica Ice Group Family Tub Ice Cream Filler is a high-performance, purpose-built packaging solution engineered for efficient filling of family-size ice cream tubs and multi-serving containers. Designed for artisan creameries and industrial ice cream manufacturers alike, this machine combines precision dosing with gentle product handling to preserve texture and reduce waste. Built with robust stainless-steel construction and hygienic food-grade components, the Tortica filler ensures consistent portion control and maximum uptime. Its intuitive controls and flexible filling range make it ideal for a wide variety of frozen desserts — including ice cream, gelato, sorbet, frozen yogurt, and premium specialty blends. Key Features: - Accurate volumetric or servo dosing for consistent product weight and minimal giveaway - Adjustable fill heights and speeds to accommodate tubs from small family sizes to larger multi-serve formats - Hygienic design with easy-clean sanitary surfaces, CIP compatible components, and sealed guarding - User-friendly interface for quick changeovers and reduced operator training time - Heavy-duty construction suited for continuous production environments - Smooth, low-shear filling preserves ice cream structure and reduces air entrainment - Optional integrations for lid placement, sealing, date coding, and packing conveyors Whether you’re scaling up production or upgrading your existing line, the Tortica Ice Group Family Tub Filler delivers dependable performance, precise filling accuracy, and the flexibility to support product innovation and seasonal variety offerings. Cup size: 200 x 100 mm (LxW) Granular application: Available Main filling: Available Cap Closing: Available Stations: Cup Dispenser > Filler > Granular Filler > Lid Closing > Outlet Conveyor Ppodpeynr Axofx Amper Condition: Good Available: Immediately

Condition: used, Year of construction: 2010, This Filling machine has been running supporting a large supermarket Chain for the Greek Yoghurt Type cups from 500 gr to 1000 gr yoghurt. The machine has been maintained very well and will be available for dismantling October 2025 . It can be seen running in production. This consists of cup de nester, cup peroxide, filling, UV on film, Film sealing on roll off , Over lid Cap applicator . Ppedpfeyr Nlfsx Amper Capacity: 2000 cps/hr Filling Type: Piston Filler Filling Volumes : 500-1000 gr Controls: Siemens HMI Cup disinfection: Peroxide Film Disinfection: UV Cup Diameter: 120 mm Film application: Heat sealing and cutting off roll Over cap: Plastic lid after sealing

Condition: used, BENHIL 8380 Butter Filling and Wrapping machine for 250gr Current Format | IN STOCK Benhil 8380 Butter Filling and Wrapping Machine Machine Benhil 8380 Capacity up to 80 packets/min (4.800 p/h) Pack size 250 gram Dimensions 100mm x 75mm x 35mm Product Butter, margarine, etc. Wrap material Aluminium foil or parchment paper in reels. Weight 2.000 kg (gross) Dimensions Approx. 200 x 150 x 200 cm (l x w x h) Electricity 2,2 kW Condition ‘’as is’’ Good Condition (Complete) Pjdpfxsyc T Dyj Ampspr Price fully refurbished: Ask for Quote

Condition: good (used), Ward Bekker Auger Filler Stainless frame, 25Kg stainless agitated hopper, 35mm diameter screw, with foot pedal, mobile, 3Ph Pjdpfx Amjy Ax Rgspjpr

Condition: used, Year of construction: 2007, The Romaco Unipac U2080 is a versatile, high-performance tube filling and sealing machine designed for pharmaceutical, cosmetic, and chemical products. Operating at a mechanical speed of 80 tubes per minute, it features 9 stations and handles tube diameters from 10–50 mm and lengths from 60–220 mm, offering flexible, precise filling. Key Features and Technical Specifications: Machine Type: Automatic tube filling and sealing machine. Capacity: Up to 80 tubes per minute (mechanical speed). Working Stations: 9. Tube Dimensions: Diameter: 10 – 50 mm. Length: 60 – 220 mm. Application: Suitable for liquids, creams, and gels for pharmaceutical and cosmetic applications, say Makinate and MLTC-Europe. Ppedpoyvuhnsfx Ampjr

Condition: excellent (used), Otto Kremmling type oka Automata 600/7 Marzipan depositing and forming of soft mass. 25 kg blocks of Marzipan are put in squeezed through the roller and into the dies forms then goes into cooling system. Psdjylbz Sepfx Ampjpr

Condition: new, Year: 2023 • Type: Robotic pick and place cell Ppjdpfxey An Ego Ampor • Robots: 2 x Stäubli TS2-80 SCARA robots • Robot reach: 800 mm • Robot payload: 8.4 kg each • Guarding: Full enclosed safety cell • Controls: Integrated control cabinet with HMI • Teach pendants: 2 fitted • End of arm tooling: Vacuum gripper heads fitted • Conveyor system: Infeed/outfeed conveyors included • Application: High-speed food/product pick and place

Condition: new, Year of construction: 2025, functionality: fully functional, warranty duration: 12 months, Linear Weigher: Gentle and Precise Filling Technology Our linear weigher is the ideal solution for simple and accurate dosing and filling of products. It seamlessly combines precision with gentle handling. Thanks to the minimal drop height, product damage is effectively avoided, ensuring the quality of your goods, even with sensitive items. Flexible and Efficient Operating Principle The core of our technology is a simple yet highly effective operating principle: Products are conveyed via linear belts or vibratory feeders and precisely dosed into the weighing bins. Features: - Easy operation and cleaning - Convenient control via color touch screen - Memory for different weighing recipes - Precise weighing results through three-stage weighing (coarse / medium / fine), each stage individually programmable Psdoyazywjpfx Ampepr - Tool-free format change - Intuitive design enables quick changeover and easy cleaning - Gentle handling: minimal drop height protects delicate and fragile products - Versatile: flexible use in both food and non-food sectors - Accurate dosing ensures consistent product quality - Robust and hygienic: parts made from 304 stainless steel, easy to clean - Compact design and durable construction save space and reduce maintenance effort With our linear weigher, you receive a reliable, precise, and hygienic solution that enhances the efficiency of your production processes. Technical data - Weighing range: 20g to 2,000g - Accuracy: up to 1g, depending on product - 4.5-liter weighing bin - Max. speed: 30 weighings/minute (double-head weigher) - Material: stainless steel 304 (V4A / 316 on request) - Connection: 220V / 50Hz / 6A

Condition: new, functionality: fully functional, The Table Top Print bagging machine enables efficient packaging and sealing of products in pre-made bags and is suitable for various formats. The machine is easy to operate and features a user-friendly display for setting up, saving jobs, and controlling operating parameters. For maximum flexibility, it offers automatic and manual operating modes with a secure sealing bar. Training a packaging operator takes less than five minutes. With integrated thermal transfer printing technology, bags can be directly printed with high-resolution graphics, text, and barcodes—eliminating the need for separate labeling. Ppjdpfjxlzr Aox Ampjr Features: - Multi-color display for straightforward settings - Pre-selection of desired product quantity for packaging - Integrated total product counter (with reset function) - Roll change in under one minute - Sealing via foot pedal, automatically, or manual push-button - Feed systems for automatic bag filling available on request Technical Parameters: 1. Maximum bag length: 450 mm 2. Maximum bag width: 250 mm 3. Maximum bag thickness: 0.04–0.1 mm per layer 4. Packaging speed: up to 25 units/minute 5. Supply voltage: 1Ph. 220V 50Hz 6. Power consumption: approx. 1 kW 7. Machine weight: approx. 70 kg (including printer) 8. Machine dimensions: approx. 670 x 665 x 860 mm 9. Print area: 53 x 75 mm 10. Bag type: wicketed bags on rolls Base machine: €12,500 + Thermal transfer printer: €5,500 + Label dispenser: €2,900 + SATO label printer incl. dispenser: €6,500 to €9,000

Condition: new, Year of construction: 2025, functionality: fully functional, warranty duration: 12 months, The versatile all-rounder combines outstanding workmanship with a broad range of applications. Our machine also offers intuitive operation, optimizing your packaging processes. A high-quality unwind unit with double automatic roll centering ensures precise material guidance. Furthermore, our active material feed system guarantees optimal web tension for flawless packaging results. The highly efficient brushless motors and user-friendly color touchscreen control system provide maximum flexibility during format changes, significantly simplifying your packaging operations. The machine is equipped with memory storage for machine parameter settings and can save up to 50 different products. For this packaging line, we also offer fully and semi-automatic feeding solutions, which can be retrofitted upon request. The machine is available with either left- or right-hand operation and features a rotary cross-sealing unit with an electronic overload protection switch for maximum safety. Thanks to its performance, versatility, and technological advancement, our machine is ideally suited for packaging food products such as brioches, cakes, candies, pralines, chocolate, as well as pharmaceutical products and various gift items. If you are looking to optimize your packaging processes with high production capacity and superior quality, Impuls Packaging is your ideal partner. System features: 1. Chain conveyor belt 2.6 meters in length (other lengths available on request) 2. Adjustable bag former 3. Single film loader + automatic film centering device 4. Rotary end sealing, single sealing jaw 5. Robust central fin seal structure 6. Four servo drive controls - Active material feed shaft - Central sealing - End sealing - Conveyor belt 7. HMI control panel 8. Three individual temperature controllers 9. Housing made of stainless steel 304 10. Documentation in the local language 11. Print mark control 12. Programmable bag length or fully automatic product length detection 13. Standard direction: left to right Technical Parameters 1. Product length: L120–500 mm 2. Product width: W30–200 mm 3. Product height: H10–80 mm 4. Packaging speed: up to 100 products/min (depending on product, bag length, and material) 5. Maximum film width: 600 mm 6. Connection voltage: 1Ph. 220V 50Hz 7. General power: approx. 4.8 kW 8. Machine weight: approx. 550 kg 9. Machine dimensions: approx. 4280 x 1200 x 1230 mm Ppsdswld Upspfx Ampjr

Condition: new, Year of construction: 2025, functionality: fully functional, warranty duration: 12 months, The all-rounder combines outstanding build quality with a wide range of applications. Our machine also offers intuitive operation to optimize your packaging processes. A high-quality material unwinder with dual automatic roll centering ensures precise material guidance. Furthermore, our active material advance unit guarantees optimal web tension for flawless packaging results. The highly powerful brushless motors and user-friendly color touchscreen control system give you maximum flexibility during format changes and greatly simplify your packaging operations. The machine features memory slots for storing machine parameters—up to 50 different products can be saved. For this packaging line, we also offer fully and semi-automatic infeed systems, which can be retrofitted at your request. The machine is available in both directions of operation and features rotary cross-sealing with an electronic overload protection switch for maximum safety. Thanks to its powerful performance, versatility, and technological sophistication, our machine is ideally suited for packaging food items such as brioches, cakes, candies, pralines, chocolate, as well as pharmaceutical products and various gift articles. If you wish to optimize your packaging processes with strong production performance and high quality, Impuls Packaging is your ideal partner. System features: 1. Chain conveyor belt, 2.6 meters in length (other lengths available on request) 2. Adjustable bag former 3. Single film loader + automatic film centering device 4. Rotary end seal, single sealing jaw 5. Robust, central fin seal structure 6. Four servo-driven systems: - Active material advance shaft - Center sealing - End sealing - Conveyor belt 7. HMI control panel 8. Three individual temperature controllers 9. 304 stainless steel housing 10. Documentation in the local language 11. Register mark control 12. Bag length programmable or with fully automatic product length detection 13. Standard operation from left to right Ppjdpfx Amewld Tfspor Technical specifications: 1. Product length: L40–600 mm 2. Product width: W30-200 mm 3. Product height: H10–80 mm 4. Packaging speed: up to 80 products/min 5. Maximum film width: 600 mm 6. Power supply: 1Ph. 220V 50Hz 7. Total power: approx. 4.7 kW 8. Machine weight: approx. 550 kg 9. Machine dimensions: approx. 4300 x 1190 x 1210 mm

Condition: new, Year of construction: 2025, functionality: fully functional, warranty duration: 12 months, Our state-of-the-art VFFS packaging machine is a true all-rounder, specifically designed to optimally support companies that demand the highest quality standards. With exceptional build quality and a wide range of applications, our machine features intuitive operation that streamlines your packaging processes. The highly powerful motors and user-friendly color touchscreen control system provide maximum flexibility during format changes and significantly simplify your packaging operations. The machine is equipped with memory slots for storing machine parameter settings. For this packaging line, we also offer fully and semi-automatic infeed systems, including weighing solutions, which can be retrofitted according to your requirements. If you want to optimize your packaging processes with robust productivity and high quality, Impuls Packaging is your ideal partner. Machine features: 1. Single film unwind 2. Individually servo-driven sealing jaw 3. Three servo drive controllers 4. HMI control panel 5. Two independent temperature controllers 6. Housing made of stainless steel 304 7. Documentation in the local language 8. Registration mark control 9. Programmable bag length 10. Vertical product flow 11. One format set is included in the price. Technical parameters: 1. Product length: L50-290mm 2. Product width: W80-200mm 3. Packaging speed: up to 45 products/min (depending on product, bag length, and material) 4. Maximum film width: 420mm 5. Power supply: 1Ph. 220V 50Hz Pjdjwlgnropfx Ampspr 6. Total power: approx. 3.9 kW 7. Machine weight: approx. 300 kg 8. Machine dimensions: approx. 1300x1170x1585mm Bag types: 1. Classic flow pack bag 2. Stand-up pouch (classic flow pack bag with side gusset – available as an optional extra)

Condition: excellent (used), Year of construction: 2022, functionality: fully functional, input voltage: 230 V, type of input current: AC, input frequency: 50 Hz, DGUV certified until: 05/2027, White Electric Spritz Pastry Device Spritz pastry machine, electrically operated Model: ESFG Ppedpfx Ajy H Ur Uompor with wall mounting bracket DGUV V3 tested Stepless adjustment Connection 230V, ready to plug in Used machine Option: Quark balls Spritz pastries Ring doughnuts / Donuts

Condition: used, Year of construction: 1997, functionality: unexamined, total height: 2,500 mm, total length: 33,223 mm, total width: 2,000 mm, table width: 700 mm, input frequency: 60 Hz, input voltage: 460 V, table length: 5,000 mm, table height: 1,200 mm, control cabinet width: 600 mm, control cabinet length: 1,500 mm, control cabinet height: 2,500 mm, compressed air connection: 5.5 bar, Stud & Track Rollforming Machine With 4.5 Tonnes Decoiler & Crane 5 Tonnes Capacity - Fully Dismantled - Ready to be transported MACHINE MANUFACTURER: BRADBURY UK GENERAL SPECIFICATIONS STUD LINE MATERIAL : GALVANIZED COLD ROLLED STEEL MATERIAL STRENGTH : 85.000 PSI MAX YIELD STRENGTH 55.000 PSI MIN· YIELD STRENGTH THICKNESS: 20 GA. TO 16 GA.-"HEAVY GAUGE" Psdpsxya Hzjfx Ampepr 22 GA. TO 25 GA.-"LIGHT GAUGE" ENTRY COIL WEIGHT: 10.000 LB MAX ENTRY STRIP WIDTH: 12" MAX C APPROX. 5" MIN C APPROX. ENTRY COIL I .D: 20" MAX ENTRY COIL O.D: 72" MAX EFF. LINE SPEED : l20-150 FPM-"HEAVY GAUGE" 175-250 FPM-"LIGHT GAUGE" ROLLFORMER SPEED: 120-250 FPM PASS LINE HEIGHT: 51" LINE DIRECTION : RIGHT TO LEFT MODE OF OPERATION : PREPUNCH/POSTCUT CUT LENGTH : 20' MAX. 5· MIN GAUGE" : 90 % C APPROX. ) OF PRODUCT iON < i 6' LENGTH TOLERANCE : •/- 1/16" AT 250 FPM MAIN POWER : ELEC : 460 VOLTS 60 HERTZ 3 PHASE 192.2 FLA : AIR : 80 PSI MIN. CLEAN 6 DRY : HYO : 1500 PSI WORKING PRESSURE CONTROL : 115 VOLT AC AIR CONSUMPTION: 2 CFM MAX. AT 80 PSI

Condition: excellent (used), 4 Bag fillers for sale all working call or email for inquiries Pedpsyryqxsfx Ampepr

Condition: new, Year of construction: 2026, machine/vehicle number: MH-FJ-1A, The VOGEL MH-FJ-1A carton sealing machine has a side drive belt system and an additional drive belt in the upper section of the machine. The advantage lies in the stability - high cartons cannot tip to the side. Carton formats: Length 150 - ∞ mm Pedey Drplspfx Ampjpr Width: 120 - 480 mm Height: 120 - 480 mm Technical data: Length 1,090 mm Width 1,050 mm Weight 200 kg Operating voltage 220 V CE marking Accessories: For our VOGEL carton sealer program we offer rollers, leading and trailing tables, roller conveyors.

Condition: new, Year of construction: 2026, machine/vehicle number: MH-FJ-1AW, The VOGEL MH-FJ-1AW carton sealing machine has a side drive belt system. Including leading and trailing table. Carton formats: Length 150 - ∞ mm Width: 100 - 480 mm Psdpfxjy Drnze Ampspr Height: 120 - 480 mm Technical data: Length 1,090 mm Width 890 mm Weight 180 kg Operating voltage 220 V CE marking Accessories: For our VOGEL carton sealer program we offer rollers, leading and trailing tables, roller conveyors.

Condition: new, Year of construction: 2026, machine/vehicle number: MH-FJ-3A, The VOGEL MH-FJ-3A carton sealing machine is equipped with a lid sealing mechanism, i.e. the cartons can be fed in an open state. The short and long lid parts of the carton are closed first, only then is the carton glued. Carton formats: Ppjdpfx Aoy Drnuompor Length 150 - 600 mm Width: 115 - 490 mm Height: 110 - 510 mm Technical data: Length 1,800 mm Width 880 mm Weight 300 kg Operating voltage 220 V Air 5 kg/cm2 CE marking IMPORTANT: An air pressure supply is required to operate the machine, which is not included in the scope of delivery. Accessories: For our VOGEL carton sealer program we offer rollers, leading and trailing tables, roller conveyors.

Condition: new, Year of construction: 2026, machine/vehicle number: MH-FJ-1AWS, The VOGEL MH-FJ-1AWS carton sealing machine has a side drive belt system. The machine is specially designed for cartons in smaller formats. Ppedpfx Amey Drnnjpjr Carton formats: Length 160 - ∞ mm Width: 90 - 320 mm Height: 60 - 280 mm Technical data: Length 1,090 mm Width 890 mm Weight 85 kg Operating voltage 220 V CE marking Accessories: For our VOGEL carton sealer program we offer rollers, leading and trailing tables, roller conveyors.

Condition: new, Year of construction: 2026, machine/vehicle number: MH-FJ-2_1, Our VOGEL MH-FJ-2 demonstration case sealer is equipped with a side drive belt system. The machine automatically adjusts to the respective carton size within the specified range. Carton formats: Length 150 - ∞ mm Width 140 - 480 mm Height: 120 - 480 mm Technical data: Length 1,150 mm Width 1,005 mm Weight 250 kg Operating voltage 220 V Air 5 kg/cm2 CE marking IMPORTANT: An air pressure supply is required to operate the machine, which is not included in the scope of delivery. Our MH-FJ-2 carton sealer has been specially developed for changing carton formats. formats. Thanks to the pneumatic adjustment of height and width, it is possible to changing carton formats can be processed quickly and easily without manual intervention. be processed quickly and easily. The machine adapts to the different formats at lightning speed. Thanks to two side & two upper conveyor belts, your cartons are conveyed safely through the carton sealer. The lid flaps of the cartons are pressed down manually before being fed into the machine. the machine. This machine is designed for adhesive tapes with 76 mm core diameter and 50 mm width. We recommend the use of machine adhesive tape with more meters per roll (than with hand rolls), so you can work longer without work without having to change the adhesive tape! You can use PP & PVC adhesive tapes as well as environmentally friendly paper adhesive tapes can be used. The adhesive units can be easily removed to change the adhesive rolls. However, this can also be used if you only want to tape the top of cartons ( Ppedpfx Ajy Drl Tjmpjr (keyword: automatic bottom cartons). Of course, this machine also bears the the CE mark. An on-site air pressure connection is required to operate this machine! is necessary! Accessories: For our VOGEL carton sealer program we offer rollers, leading and trailing tables, roller conveyors.

Condition: new, Year of construction: 2026, machine/vehicle number: MH-FJ-1AWS_1, The VOGEL MH-FJ-1AWS carton sealing machine has a side drive belt system. The machine is specially designed for cartons in smaller formats. Carton formats: Pedey Drlgjpfx Ampopr Length 160 - ∞ mm Width: 90 - 320 mm Height: 60 - 280 mm Technical data: Length 1,090 mm Width 890 mm Weight 85 kg Operating voltage 220 V CE marking Accessories: For our VOGEL carton sealer program we offer rollers, leading and trailing tables, roller conveyors.

Condition: new, Year of construction: 2026, machine/vehicle number: YS501X, Die Kartonverschließmaschine vom Typ VOGEL YS501X ECONOMIC ist unsere Empfehlung speziell für eher große Kartonformate, welche in Serien verklebt werden Karton-Formate: Länge 150 – ∞ mm Breite 150 – 500 mm Höhe: 140 – 560 mm Technische Daten: Betriebsspannung 220 V CE-Kennzeichnung Zubehör: Zu unserem VOGEL-Karton-Verschließer-Programm bieten wir Laufrollen, Vor- und Nachlauftische, Rollenbahnen an. Unser Kartonverschliesser YS501X ECONOMIC ist eine günstige Lösung, wenn es darum geht Kartons in eher großen Formaten sicher zu verschließen. Durch zwei seitliche Förderbänder werden Ihre Kartons sicher durch den Kartonverschliesser befördert. Die Einstellung der Kartonbreite erfolgt mechanisch über eine Kurbel. Die Höheneinstellung ist bei dieser Maschine besonders leicht und schnell zu lösen, denn das obere Klebeaggregat muss nur entriegelt werden und kann dann einfach auf die jeweilige Höhe gebracht werden. Auf Grund der mechanischen Einstellung der Formate ist diese Maschine für Serienproduktionen gedacht, bei welcher eine längere Zeit hintereinander Kartons im gleichen Format verschlossen werden sollen. Die Deckelklappen der Kartons werden vor dem Zuführen in die Maschine manuell niedergedrückt. Ausgelegt ist diese Maschine für Klebebänder mit 76mm Kerndurchmesser und 50 mm Breite. Wir empfehlen dazu den Einsatz von Maschinenklebeband mit mehr Metern je Rolle ( als bei Handrollen), so können Sie länger arbeiten ohne das Klebeband wechseln zu müssen! Es können gleichermaßen PP & PVC Klebebänder, wie auch umweltfreundliche Papierklebebänder genutzt werden. Die Klebeaggregate können leicht heraus genommen werden, um die Kleberollen zu wechseln. Pedpfx Aey Dri Ssmpopr Ebenso kann dies aber auch genutzt werden, wenn Sie Kartons vielleicht nur oben zukleben wollen ( Stichwort: Automatikbodenkartons). Selbstverständlich trägt auch diese Maschine das CE Zeichen.

Condition: new, Year of construction: 2026, machine/vehicle number: MH-FJ-1A, It features a side drive belt system as well as an additional drive belt at the top section of the machine. The advantage lies in increased stability – this prevents tall cartons from tipping over to the side. Carton formats: Length: 150 – ∞ mm Width: 120 – 480 mm Height: 120 – 480 mm Technical specifications: Podpfxjy Drgqs Ampopr Length: 1,090 mm Width: 1,050 mm Weight: 200 kg Operating voltage: 220 V CE marking Accessories: Our VOGEL carton sealer program is complemented by transport castors, infeed and outfeed tables, as well as roller conveyors.