Adhesive Tape Manufacturing Process

The tamper evident tape production process consists of several key steps. Below is a general step-by-step guide to the tape manufacturing process:

Unrolling polypropylene film

Whether you are producing shipping tape, electrical tape, or any other type of tape, the production process begins with rolls of polypropylene plastic film. These rolls are loaded onto a machine called an unwinder. Workers then place a strip of adhesive splicing tape along the end of each row to connect the rolls and ensure continuous feeding of the line.
Unwinding the rolls onto the splicing tape
As the rolls unwind, their ends are glued to the splicing tape at the beginning of the next row. This process is repeated over and over again, with the end of each roll sticking to the beginning of the next.

Automatic Tension Adjustment

The automatic tension adjuster ensures even film pulling and prevents tearing.

Applying Solvent

The unwinder applies solvent to the surface of the film to prevent sticking during unwinding. The machine then coats one side with a hot adhesive made from various components, known as hot melt glue.

Preheating Holding Tank

The hot melt adhesive is loaded into a preheated holding tank and kept at 390 degrees Fahrenheit to prevent hardening. The holding tank pumps the adhesive to a machine called a blower, which wipes away excess adhesive and then rolls the film.

Use of Cooling Rolls

Cooling rollers immediately harden the adhesive. A computerized sensor ensures even adhesive application and adjusts output when needed. For double-sided tape, a barrier layer is inserted during the winding process and the process is repeated on the other side.

Rewinders

The rewinder rolls the tape into spools and separates the spliced spools. Once loaded, a knife is used to separate the tape at the splice point for the next stage.
Slitter

Slitters with blades divide the tape on a reel into strips according to the desired width. For example, transportation tapes can be produced in 31 strips per reel.
Finished tape rolls

Each tape is wrapped around a cardboard core and sealed with a label. The length of each tape roll varies according to customer specifications. The finished tape rolls are ejected from the packaging.

Quality Control Inspection

Prior to packaging and shipment, the tape undergoes a quality control inspection. A common test method is to unroll the tape with the adhesive side facing up, then place a stainless steel ball down the incline and measure the adhesive force over a specified distance.

Backing materials for adhesive tapes

Adhesive tapes use a variety of backing materials, including

Paper: Known as flat-backed tape.
Cloth: Woven fabric is used for strength.
Felt: Non-woven tape that prevents scratching.
Foam: Used for sealing, mounting and weatherstripping.
Metal Foil: Aluminum, lead or copper for strength and resistance.
Plastic Film/Polymer: Thermoplastic or thermoset, clear or colored.
PET (polyethylene terephthalate): Polyester backing.
Polyimide: Polyimide film for flexible circuit materials.
PVC (Polyvinyl Chloride): Vinyl backing, resistant to abrasion.
Glass/Fiberglass Stable in harsh environments.
Filament Contains threads used to bind objects.

Conclusion

Duct tape plays a vital role in various industries. We hope this article has provided useful insights. For reliable tapes, visit Eco Securitytape and we will provide you with products at a good price.

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