Slit Sealing

admin  3/23/2022
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Slit Sealing 7,1/10 85 votes
All Categories > DOWNSTREAM EQUIPMENT > SLIT SEALERS
Below are is list of machines that are typically found after the extrusion process in the productions of bag machines.
Down Stream equipment includes Post Gusseters , Slit Sealers , Embossers , Edge Guides, Dancers and Folders (Bag Folder Stacker, Folder, Dual V Folder & C Folder).
Post Gussetters are used to form a diamond-shaped or triangular seam pattern at the bottom of the bag, to provide the bag to expand or to be reinforced.
Slit Sealing is a method that involves sealing two or more layers of film together in the machine direction. The slit-seal technique is usually used to convert a single large tube of film into smaller tubes.
Embossing is the process of pressing a raised pattern on to the film or bag, giving the film a textured pattern increasing the ease of opening and handling.
Film Edge Guide System sets unwinded roll position by means of stepped motor.
Web alignment is an important part of a converting operation as a moving web of material has a tendency to track off course and wander out of alignment during converting processes. To avoid these problems, Edge Gide Systems automatically guide the web to assure production accuracy and reduce waste. Sensors are used to monitor the web position for lateral tracking, an actuator is used to shift the running web mechanically back on course whenever the sensor detects movement out of alignment of the set path.
Dancers are the most commonly used controller for desired web tension, to avoid stress on fragile web materials. The dancer control system consists of a power supply, dancer control, pivot point sensor, and tension brake or clutch, AC/DC drive-motor or step/servo drive-motor. Dancers provide the web tension while the control and controlling element stabilize dancer operation for unwind, intermediate zone or rewind tension.
Various size V-Folder and C-Folder frames are used to fold the finished bag down to the desired size.
For NewPost Gusseters , Slit Sealers , Embossers , Edge Guides, Dancers and Folders (Bag Folder Stacker, Folder, Dual V Folder & C Folder).

Slit Seal

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Slit Seal Unit

The UHP slit valve door sealing element is molded-in-place, integrally vulcanized to the metal slit valve door. This process eliminates mechanical wearing between the sealing element and groove, creating a robustly bound seal providing reduced particulation up to 95%. The UHP slit valve door’s custom-engineered sealing element. ISOPIPE Slit & Seal has a secure double bonding along the slit's length, with strong inner self-adhesive mesh tape and self-adhesive overlapping tape. It is pre-cut at angle offering a larger bonding surface, better adhesive properties and less risk of heat loss. ISOPIPE Slit & Seal reduces significantly application and installation time and costs. Illustrations show slit sealer with 3 sealing heads mounted on a Harnden PP1500S single track machine producing 8 lanes of captive flap bags at 230 cpm. The Harnden Slit Sealer is adaptable and can be used in any continuous web fed process using heat sealable films from 6 micron - 100 micron thick including extruders - flexo presses, bag makers.