Adhesion and Surface Treatment of Plastic

Surface treatment of plastic is not an uncommon procedure in the industrial world. Innumerable plastics are treated each and every day for improved wettability leading to proper adhesion of paints, inks, coats etc.

Although, the problem of attaining good quality adhesion of coatings, glues, sealants and paints as compared to other conventionally difficult to bond materials e.g. propylene has confronted engineers since the 1950’s where it all began.

Auto Devices for surface treatment

Adhesion problem is common in materials that possess low surface energies. Examples can include High-Density Polyethylene, Polypropylene, EPDM, and Polyethylene etc. With the surface energy ranging anywhere from twenty nine to thirty six Dyne/cm or mN/m (milinewton per meter). Obtaining a level of adhesion on any materials with low surface energy i.e. Polypropylene or Polyethylene etc. can sometimes become extremely difficult because of their slickness. Thus, this adhesion problem leads to the printed ink rubbing off, coatings or paint not sticking on the surface along with failed gluing and weak sealing.

Two plastic surfaces one surface treated and one not surface treated

Tantec produces several solutions for plastic surface treatment. Please refer to
our list of products: plasma treaters and corona treaters.
Should you have further questions, do not hesitate, our
specialists are here to help: sales@tantec.com

Industries dealing with medical devices or automotives are generally subject
to the adhesion problem as many others that coat plastics, print on them or
apply bonding techniques. And due to the increased use of Polyolefin, surface treatment of plastic is becoming more and more difficult. Normally, polyolefin
has a non-polar surface or low surface energy which is unresponsive to printing, bonding, coating or painting etc. unless you’re willing to apply treatments that are damaging to the environment and require a lot of effort.

tantec-managament

Solving your adhesion problems

We have more than 40 years of experience in delivering and manufacturing quality, high-end surface treatment products for any industry.

Tantec has both standard machines, but also custom-designed machines.

Contact us today and get a quote. We are standing by to service you.

Solving your adhesion problems

We have more than 40 years of experience in delivering and manufacturing quality, high-end surface treatment products for any industry.

Tantec has both standard machines, but also custom-designed machines.

Contact us today and get a quote. We are standing by to service you.

The management of Tantec contact people

Solving your adhesion problems

We have more than 40 years of experience in delivering and manufacturing quality, high-end surface treatment products for any industry.

Tantec has both standard machines, but also custom-designed machines.

Contact us today and get a quote. We are standing by to service you.

RotoTEC-X – plastic treater

Our RotoTEC-X product for example, offers a cost-effective method, of treating plastic materials. It is an example of a machine which treats plastic materials such as PP, PE, PEEK, ABS, PC, PS and others. Click here to see the machine.

Surface tension and the comparative surface energy of a material determine the potency of a bond existing between a coating and the material itself. If a solid possesses high levels of surface energy as compared to the surface tension of a liquid, there will be increased molecular attraction drawing closer together the adhesive and the ink or paint etc resulting in superior bond strength. Similarly, if the solid’s surface tension is lower than that of the liquid, then the attractive forces will weaken thus, resulting in repelling of the coat.

During the surface treatment of plastic, producers are often challenged with the task of increasing the surface’s energy level making it greater than the surface tension of the coating, printing ink, and paint or adhesive so as to increase the chemical attraction. This results in proper adhesion due to improved wettability of the surface. Generally, a substrate’s surface energy should range at least 5 mN/m (dyn/cm) above the surface tension of the adhesive, paint, coating or ink to be used on the surface.

Improving Adhesion and Corona treatment for plastics

Ideally, a surface to be bonded should be dust free, wettable i.e. high surface energy, clean, smooth, dry and non-porous. There are numerous methods available for increasing the polarity and surface energy of plastics. These include treatments involving high temperature, wet chemicals, etc. which are not so friendly for the environment. Other methods consist of treating the plastic surface to a high voltage corona and plasma surface activation which is friendlier towards the environment than wet chemicals and high flames.

Video: Tantec RotoTEC-X | Corona Treatment System

tantec-managament

Solving your adhesion problems

We have more than 40 years of experience in delivering and manufacturing quality, high-end surface treatment products for any industry.

Tantec has both standard machines, but also custom-designed machines.

Contact us today and get a quote. We are standing by to service you.

Solving your adhesion problems

We have more than 40 years of experience in delivering and manufacturing quality, high-end surface treatment products for any industry.

Tantec has both standard machines, but also custom-designed machines.

Contact us today and get a quote. We are standing by to service you.

The management of Tantec contact people

Solving your adhesion problems

We have more than 40 years of experience in delivering and manufacturing quality, high-end surface treatment products for any industry.

Tantec has both standard machines, but also custom-designed machines.

Contact us today and get a quote. We are standing by to service you.

Tantec Medical industry surface treatment system

Medical

Surface treatment machine nozzles

Plastic cards

Tantec Corona Treaters working on foam board

Foam and Board

Surface treatment nozzles treating automotive surface

Automotive

Electronic device which can be treated with surface treatment

Electronics

Surface treatment of cables and pipes

Cables & Pipe

Corona treatment of packaging products

Packaging

Tantec expert operating a surface treatment machine

Ask our plasma and corona expert today