How we do it

How we do it?

In this section we show how we perform certain tests, measurements, studies, reviews, evaluations, etc., which are within the scope of our activities.

deca1One of the recent studies (studies) is currently assessing the safety of lighters . Test on physical- mechanical properties of lighters perform in BS EN ISO 9994. This standard regulates the following parameters: height of the flame; Sparking and flickering; Extinction of the flame; Compatibility of fuel; Endurance refillable; Capacity and volume of fuel; Endurance in free fall ; Resistance at high temperatures; Internal pressure; During the combustion cycle; Long-term fire; Compressive force. The actual study on the safety of lighters is raglamentirano in BS EN 13869

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This very interesting study requires testing to be conducted with one hundred children aged 42 to 51 months, boys and girls, divided into groups. The essence of this study was to examine whether within about 10 minutes, the child will be able to play sound (noise) from the ignition. Before being carried out this study, lighters must have passed a test in accordance with BS EN ISO 9994 .

The actual study is carried out by so -called lighter – substituent, which is essentially the same as the true lighter but meaningless /without propellant/. Thus, safety is ensured in the course of the experiment. We have contracts with several kindergartens in different geographic areas of the country.

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Childcare in turn received the necessary permits from regulatory authority to conduct such a study on their territory. Our lawyers have prepared informed consents with clearly specified course of study that every parent sign agrees that his child to participate in the experiment. Participation of each card is prepared to participate in which are recorded the names of the child’s date of birth in months, sex, date of the experiment, the beginning and end of the experiment , the name of the investigator, the number of lighter substitute to working the child, the name of the head of the organization, and the minute the child is able to vazproidvede sound of fire or failed to cope with the task. The survey results are summarized and compared with the rated requirements of the standard. To the final report and added many pictures. Already have considerable experience of conducting such studies and we are proud to say that our reports are highly appreciated by the supervisory authorities in Bulgaria and the EU Member States.

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This trial (research, study) be discontinued product packaging resembling food or packaging for pharmaceutical products. So far we have extensive experience with product packaging imitating foods. The test shall be conducted in accordance with the requirements of BS EN ISO 8317:2004/AC: 2005 – “Packaging resistant to opening by children. Requirements and test methods for packaging multiple closing (ISO 8317:2003)”. It is interesting to note that in addition to this requirement, the packaging must not impede age people to open it.
This study requires the test to be carried out with two hundred children aged 42 to 51 months, boys and girls, divided into groups of at least three geographical regions of Bulgaria. Furthermore, the test involved a group of 100 adult participants aged 65-80 years. The essence of this study was to examine whether within about 10 minutes, the child will be able to play sound (noise) of opening the package. Before being carried out this study, the packages are emptied of content and naparneni the same vmestivost water.

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We work with several kindergartens in Sofia, Pazardzhik and Montana. Childcare in turn received the necessary permits from regulatory authority to conduct such a study on their territory. Our lawyers have prepared informed consents with clearly specified course of study that every parent sign agrees that his child to participate in the experiment. Participation of each card is prepared to participate in which are recorded the names of the child’s date of birth in months, sex, date of the experiment, the beginning and end of the experiment, the name of the investigator, the number of the package that works with child the name of the head of the organization, and the minute the child is able to vazproidvede sound from opening or failed to cope with the task.
Group of adults gathered in the boardroom of IC GLOBALTEST and testing was performed in the same way.

The survey results are summarized and compared with the rated requirements of the standard. To the final report and added many pictures.
We have considerable experience of conducting such studies. Our reports are highly appreciated by the supervisory authorities in Bulgaria and the EU Member States.

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Other criteria on general physical and mechanical strength of glass packaging is tamper resistant internal pressure. Probably few of you have asked about what internal pressure could sustain a bottle designed to store carbonated liquids, given that a tire is loaded with about 2 atm.

Cylinders are designed to store champagne or sparkling wine must have resistance to internal pressure of at least 18 atm. Another interesting fact is that some brands of soft drinks have required the manufacturer of glass packaging, resistance to internal pressure is above 30-35 atm. This indicator depends on many factors – the design of the packaging, chemical composition of the molten glass defects of workmanship, thinning walls, irregular transitions in double – bottom rounded body inhomogeneity of molten glass, high internal stresses and others. As a rule it can be said that the cylindrical shape of the package implies a higher resistance, and internal pressure. The cylinders with the lowest resistance are those who have a square cross-section of the body. This is the reason for the high fragility of such products in the filling lines, transport, storage and trade.
Methods which can determine the resistance to internal pressure were:
– Standard method – increasing pressure is applied to a specified value set in the legal document.
– Loading and subsequent retention – increasing pressure to perform a certain value and retention at this value for a specified period of time;
– Testing With the constantly increasing internal pressure to burst;
– Testing by sudden hammering;
– Testing by impulses to breakage.
Our apparatus for measuring the resistance to internal pressure is manufactured by leading companies worldwide – American glass research and is capable of measuring the above methods.

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The existence of tensions among important characteristics of glass products and is a criterion for their general physical and mechanical strength. There are two types of stress in the glass Residual internal stress and controlled imported.
– The first type is the result of improper process water cooling products /tempering/ neprosredstveno after molding them. This gives rise to a compressive force and tension between rapid solidification surface layer of glass and this in depth. In this case, the stresses are randomly located and if they exceed the permissible norm cause the destruction of the glass due to minimal mechanical or self-destruction without the intervention of any external factor.

polariscope– The second type is when tensions are kontrolilano imported. These are thermally toughened glass or so-called special purpose lenses – safety glasses and dangerous. As an example, these are all glass doors, glass walls, etc. . In this case, the voltages are made ​​by special technology of heating and subsequent quenching. They are evenly distributed, which is the reason for their high physico- mechanical and thermal resistant to this type of glass. Another reason why they are preferred building product is that in case of breakage, they are broken into small pieces nerezheshti and without risk of injury. There is also a technology imported controlled internal stresses in the glass by a special chemical treatment of already produced izdeliya. This category includes refractory glass products and a special glass located prolozhenie military industry. We measure the stresses in the glass with polyariskop – polarimeter. In the Republic of Bulgaria, there are several polyariskopa in different laboratories, but polarimeter can boast just us. The principle of measurement is quantitative and the unit is nanometer to centimeter thick. The method is optical and based on the birefringence of the light that occurs in the glass under the action of the internal stress. The test was performed by the method of compensation, and the quantitative determination of the difference in the beam path. We use compensator Senarmont. The field of vision of the compensator is a size of 250 mm.

In laboratory practice for some tests use glass containers and products to be produced from a neutral /borosilicate/ molten glass . These glasses have a high value .
In our own patent technology can do from any glass product manufactured by a simple molten glass , one with offset surfaces. These are the slides, watch glass, cans and containers for storage of liquids with a specific pH , all kinds of glass packaging. The value of such “neutral glass” is significantly lower than that of the borosilicate .
Processing of products is thermochemical . The determination of chemical resistance /waterproof/ is performed in accordance with BS ISO 4802-1. The method is autoclaved and the determination shall be done titrimetrically.
Our factory has a capacity to perform “neutralization” of glassware . Our clients are manufacturers of banks infusion and transfusion solutions, eye drops , vaccines and other pharmaceutical industries.

Fragility accompanies the application of glass containers. Fractures usually are treated as a result of poor quality or inadequate design of the package, taking into account the influence of various factors that could give rise to (examine the relationship be machine – packing and packaging, transport) .
Often in practice, however, the fragility continues after the packaging process – in warehouses, in transit, commercially. These are the most undesirable fractures because of costs due to broken glass container and add losses spilled contents. In such cases recourse to diagnose fractures, to detect the cause of the occurrence. Approach in conducting the diagnosis is as follows – view pictures of the cracks and their character can diagnose with 100 % probability what was the cause of the destruction of the glass product in operation.
Our team consists of professionals highly qualified experts, the author of numerous books and scientific pupblikatsii on physico- mechanical and chemical properties of glass products. This makes us a sought after expert on a number of insurance companies, experts in court to prove the causes of breakage occurred in the areas of glass facades, windows, car windows and headlights fragility in filling installations and transport of bottled wines or canned foods and many other fields.

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