Dispensing Technique Overview – P2

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101 Dispensing System

At the previous article, we talked about What is Dispensing technique, its application and why it is important when coming to chemical. At this part II, we will continue with key benefits of dispensing technique and some related certifications.

Key benefits of dispensing technique

Quality

Higher accuracy and precision: with optimized dispensing, exact application of the adhesive or sealant can be achieved, which enhances overall quality.

Higher process repeatability and reliability: the efficient process control provided by a dispensing system contributes to higher repeatability and reliability of the overall process.

Reduced defects: with efficient process control the required bead size and shape may be reached more easily, avoiding adhesion and cohesion failures.

Productivity

Reduced cycle times: the efficient process control offered by a dispensing system enables shorter cycle times. The reduction may happen at different levels depending on the degree of automation.

Minimized rework: in certain cases improved application quality can minimize rework.

Lower material consumption and waste: as a result of higher accuracy material waste can be reduced and costs are therefore minimized.

Standards in Dispensing Technique

DIN 2304 - Adhesive bonding technology - Quality requirements for adhesive bonding processes

Consisting of three parts, this standard regulated the general adhesive bonding processes regardless of the industry.

The standard series specifies the requirements for quality-oriented design of bonded joints along the process chain of bonding, from development to production and maintenance.

The DIN 2304 consists of the following three core concepts:

1. Classification of boned joints in accordance with safety requirements

2. Appointment of supervisors in change of adhesive bonding work

3. Verification: Actual load < load limit of bonded joint

In addition to the DIN 2304, there is another standard regarding adhesive bonding, the DIN 6701 which regulates the use of adhesive bonding in the manufacturing of rail vehicles and parts of rail vehicles. This is a comprehensive set of regulations for quality assurance in adhesive bonding technology that will make its use safer and more reliable in the rail vehicle sector.

The classification of the adhesive bond is given by the responsible engineer with regard to the potential impact of its failure in the following safety classes:

Safety classes	Definition of safety requirements
S1	High safety requirements The failure of the adhesive bond can lead, directly or indirectly, to: inevitable risk of personal injury or loss of life loss of functionality, which is very likely to lead to inevitable risk of personal injury or loss of life
S2	Medium safety requirements. The failure of the adhesive bond can lead to: possible risk of personal injury or loss of life loss of functionality, which is likely to lead to personal injury or major environmental damage loss of functionality, which is very likely to lead to inevitable risk of financial losses
S3	Low safety requirements. The failure of the adhesive bond can lead to: loss of functionality, which is unlikely to lead to personal injury or major environmental damage loss of functionality, which is primarily linked to degradation of comfort or performance loss of functionality, which is very likely to lead to inevitable risk of high financial losses
S4	No safety requirements. The failure of the adhesive bond can lead to: loss of functionality, which is unlikely under foreseeable conditions to lead to personal injury or major environmental damage loss of functionality, which is exclusively linked to degradation of comfort or performance loss of functionality, which does not lead to inevitable risk of high financial losses

For more information, please contact GLUDITEC at:

Hotline: (+84) 969 469 089

Email: info@gluditec.com