The STR Series Automatic Shrink Sealers provide a high-performance and flexible solution for fully automatic shrink wrapping. Designed around an innovative 3-belt conveying system, the STR Series provides controlled product transfer through the sealing process while maintaining excellent accessibility for operation, cleaning and maintenance.
Available in multiple machine sizes and configurations, the STR Series can handle a wide range of single products, multipacks, boxes, cartons, trays, food products and other packaged goods. Side-seal configurations can accommodate products of virtually unlimited length, providing excellent flexibility for facilities running multiple product sizes and formats.
Depending on the required production speed, systems can be configured with intermittent or continuous box-motion sealing. Intermittent configurations can operate at speeds of up to 30 packs per minute, while box-motion models can reach up to 100 packs per minute, depending on the machine size, product and film.
The STR Series can operate with a wide range of films, including POF, PE, BOPP, using either center-folded or flat film. Both clear and pre-printed films can be accommodated, providing flexibility for protective shrink packaging as well as branded retail applications.
Different sealing technologies can be incorporated according to the application, including side seal, top seal and bottom seal, as well as large/fine seal configurations. This allows each system to be engineered around the product dimensions, film characteristics and desired package presentation.
For increased automation, the STR Series can incorporate a double film dispenser, automatic film splicer, scrap film collection system, printed-film capability, sheet applicator and labeler. These options can reduce operator intervention and improve efficiency on continuous production lines.
Systems can be supplied as a standalone automatic sealer or as a COMBO unit with an integrated heat shrink tunnel. Multiple machine widths are available, including larger configurations for oversized products.
For food, pharmaceutical and demanding production environments, the STR Series can also be manufactured in stainless steel, with a washdown configuration available where increased sanitation and frequent equipment cleaning are required. The accessible machine structure further simplifies cleaning, adjustment and maintenance.
Specialized configurations are also available for more demanding packaging applications, including MAP with hermetic sealing and gas injection, vacuum chamber systems and automatic film splicing.
Challenge: High-speed wrapping of fresh bread without product deformation. Solution: Integrated flow wrapping line with low-backpressure buffering. Result: 25% increase in line efficiency.
Challenge: Cold-chain handling of liquid cartons. Solution: NEMA 4X rated robotic pickers. Result: 40% reduction in manual labor and improved line safety.
Challenge: High-speed bundling of PET bottles. Solution: Continuous-motion shrink bundler. Result: 15% reduction in film usage and 30% increase in throughput.
