What is a Thermoplastic Adhesive Film?
Thermoplastic adhesive film, commonly known as hotmelt adhesive film, is typically presented in the form of a roll. This adhesive solution can be manufactured using different techniques, resulting in either monolayer or multi-layer structures.
- Monolayer Thermoplastic Adhesive Film: This film consists of a single layer of adhesive material.
- Multi-layer Thermoplastic Adhesive Film: This film combines up to 5 layers coextruded into a single film.
Examples include:
- 3-layer ABA films (Adhesive+Barrier+Adhesive)
- 2-layer AB films (Adhesive+Barrier) or 2-layer AA films (Adhesive+Adhesive)
Thermoplastic adhesive film production processes
Those adhesive films are produced through extrusion, a process that extrudes materials by using a die.
Two common methods for film extrusion are:
- Blown Film Extrusion: is the process of melting plastic granules, blending them, and stretching them into a sizable, continuous tube (bubble). Subsequently, this tube is flattened to produce the film.
- Cast film extrusion: In the cast film extrusion method, liquefied materials are forced through a slot die onto a chill roll that is internally cooled. Subsequently, the material passes through a sequence of rollers, crucial for defining the properties of the cast film, including its thickness. Following this stage, the cast film undergoes trimming and rolling processes.
Protechnic and Bemis covers both types of film extrusion technologies, offering a diverse range of polymers including Coployamide, Copeslyester, Polyolifine, and TPU.
Adhesive films functions & applications
Thermoplastic adhesive films serve various functions and find applications in markets such as transportation, footwear, apparel, construction, leather goods, medical, composites, consumer electronic and industrial sectors.
Depending on specific application needs, thermoplastic adhesive films offer several advantages:
– Resistance to washing and dry cleaning.
– Elasticity (low modulus).
– High bonding strength.
– Sustainable alternatives, with bio-based adhesive films.
– Barrier to fluids and air
Would you like to learn more about our thermo-adhesive film range?
Contact our Expert Team:
commercial@protechnic.bemisworldwide.com
