This question is the most common question asked by purchaser because in the era of sports shoes being ultra-light so back of the mind they are always comparing the shoe with a sports shoe and they expect it to be light & they think that the lighter the shoe, the better it is.
It is not entirely accurate because every shoe sole is designed for a specific purpose and material to make the sole are used to achieve that purpose so if a sports shoe is for running then it should be light in weight to achieve the purpose of running so in the same way the safety shoe cannot be made in the sports shoe material because it has to perform in the rugged and harsh environment, so it must have solid material which does not get broken in harsh conditions.
Sometimes, people mix less thickness leather or low quality steel toe from the prescribed standard which a buyer cannot find out without destroying the shoe & normally a user does not know many technical details about it & problem comes when some accident happens or the shoe does not perform as per the expectations.
We deliver what we commit. When you receive our goods, the first to the last pair will be the same, and no variation in leather finishing, no odor from sole or similar concerns.
So we have to compare an apple to an apple.
Benefit in PU
The benefit of dual density in PVC
All leather used in safety shoes are made from buffalo skin. Each leather skin has a different layer.
The top layer of the skin is the strongest and highest quality –It is called grain leather after finishing & tanning
The next layer is weaker and after tanning and finishing, it is called split.
The shoe made of grain will have the following advantages:
IS 15298 is broader & the latest standard that covers all types of safety footwear including safety shoes and safety gumboots but IS 12254 is an older standard that is specifically for PVC safety gumboots. Our company makes all ISI marked safety shoe in 15298 while ISI steel toe gumboot is made with 12254 standards .only in case of tenders and big quantity we make gumboots in IS 15298 standard.
EN stands for European Norms. Essentially IS 15298 is a copy of the EN 20344 Standard and all the specifications are the same.
For PVC Sole single density:
0 days for upper crack because it is synthetic and we cannot guarantee .no doubt our quality of synthetic is highest in the market but still we cannot take chances.
3 months for an upper and sole bond, sole cracking only (not abrasion because PVC has low abrasion resistance .still our PVC standards normally pass on 3-4 months )
For PU Sole single density (NON-ISI & ISI)
6 months for upper crack provided the shoe is taken care of in the way it should be.
Any visible mishandling, wetting, wrong way of wearing cannot be covered under warranty.
6 months for an upper and sole bond, sole cracking only.
For PU Sole single double (NON-ISI & ISI)
6 months for upper crack provided the shoe is taken care of in the way it should be.
Any visible mishandling, wetting, wrong way of wearing cannot be covered under warranty.
12 months for an upper and mid-sole bond, midsole and outsole bond & sole cracking only.
Safety Gumboots:
100% against leakage for 6 months or sole abrasion whichever is earlier.
Globally PU is more popular in safety footwear due to the following reasons
Still, PVC is widely used in India because of the following reasons:
Chemical resistance varies between polyurethane formulations. In general: Polyester type polyurethane is more resistant to oils, solvents, and weak acids/bases. And polyether type polyurethane is more resistant to water exposure.
Thus, PU sole is one of the best soles when it comes to manufacturing of both safety and fashion shoes. Both safety shoes for men and women use this sole to offer footwear that is comfortable and durable at the same time- not to mention affordable.
Synthetic is not bad but it is not leather and leather wins over synthetic in the following ways:
It means nothing – just trying to fool the buyer with low standards of marketing and covering up the noncompliance of the manufacturer.
DIP means making the shoe sole by direct injection process while pouring means making the sole of the shoe by pouring process.
Desma is the name of the company that makes the DIP Machine which is super expensive and is available with a few big companies.
ISI Standard does not describe the technology that has to be used for making the shoe .it is just concerned with the test results.
THE SHOE MADE BY ADIP PROCESS OR POURING PROCESS GIVE THE SAME LEVEL OF RESULTS. IT IS MAINLY THE MARKETING DONE BY BIG COMPANIES TO CREATE THE EDGE OF OTHERS.
Just marking a shoe with ISI is not sufficient. Following points can be cross-checked to identify the genuineness of a shoe marked with ISI:
Fiber toe is made of plastic and composite toe is also made of polymer but fiber toe is more brittle than composite because when it comes in contact with the adhesive used to glue the toe cap with the upper of the shoe, it becomes brittle after some time and the impact resistance drops in comparison to the composite toe cap.
Nitrile is a blend of natural rubber with some chemicals which gives it heat resistance properties around 300 degrees Celcius .we do not have it at present.
Other items can also be fulfilled.
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