Waterproof zipper bag

SZIP SuperSeal Waterproof zipper bag Applications:Diving suits (dry and semi-dry suits) Watersports clothing Tents, flexible covers Protective clothing for leisure, safety and industrial applications (gas and chemical protection) Flexible containers for electronic instruments, documents, machines and apparatus for storage and transport Inflatable objects, jumping castles, advertising balloons, etc. Bags and backpacks for daily use and outdoor activities such as cycling, biking, sailing, hiking, climbing ...and various others. The technical principle The SZIP SuperSeal is made from a strong, plastic coil zipper on a high strength fabric. Every coil half is safely embedded and secured in a plastic profile. When the SZIP SuperSeal is closed the sealing lips above and below the coil are compressed making a perfect seal. The entire plastic profile is highly abrasion resistant. The unique design prevents the slider from wearing down the sealing lips when the zipper is opened or closed. The physical design of the SZIP SuperSeal increases the seal strength when the pressure is raised or when cross tension is applied. Both actions lead to an increased mechanical pressure on the top sealing lip. Tightness The SZIP Super Seal is pressure tested with 700 mbar air pressure, applied to the front surface including the end stops. The slider engages positively into the docking end. Heavy bending may cause leakage. Please try to avoid! LimitationsThe SZIP SuperSeal is a strong, durable, very forgiving zipper, which will hold up to 700 mbar air pressure in lab conditions. These attributes ideally qualify the SuperSeal zipper for use in diving drysuits. The SuperSeal construction is very different from the well known waterproof metal zippers. When bent, curved or twisted underwater the SuperSeal may allow a little water permeation. This is not a zipper malfunction or the beginning of an increasing problem. The amount of water permeation is never enough to harm the diver or make him feel uncomfortable. Provided installation and lubrication is done correctly, the SuperSeal zipper’s advantages of durability, forgiveness and wearing comfort speak in its favour. However if there is no tolerance in terms of water permeation a metal zipper is still superior. Testing The sealing function of the SZIP SuperSeal is tested by fastening the zipper in a straight rectangular frame, 3 cm wide, face down. Compressed air is applied to the front side of the zipper and water poured over the back until it is submersed. To pass the test no air bubbles may occur for a period of 20 seconds. Random testing is performed during the production of every batch. Dirt or Sand The SZIP SuperSeal is highly resistant to damage caused by dirt or sand. However if dirt or sand are present, the zipper should be cleaned with soap and water. Dirt particles can affect the sealing function if they get caught between the chain profiles. If the SZIP SuperSeal closure is used to protect life or sensitive material, the sealing function and cleanness of the chain area should be double checked prior to every usage. Stability The SZIP SuperSeal´s performance in terms of strength and durability is outstanding. It can take weight, it is abrasion resistant and it will survive short term sharp bending and twisting without separating. When closed, the SZIP SuperSeal has a cross-breaking strength of minimum 300 N/cm. However, in the event the SZIP is over-stressed during closing, the chain may stay separated. In this case, simply move the slider back, reduce the cross tension, then reclose the zipper. The SZIP will not be damaged by this procedure. Lubrication Prior to installation in a product, no lubricant is applied to the SZIP. However, lubrication is essential to maintain the ease of operation and proper coupling of the chain. After installation into a product, manufacturers are requested to lubricate the SuperSeal all along the chain tips, and to operate the slider the full length of the chain, in both directions, at least 5 times. Acid free, grease or oil lubricants may be used. Initial lubrication and operation is essential for the full strength of the seal! If the chain is dry, re-lubricating by the user is recommended from time to time (apx. every 10 uses). Operating Force For the sealing function the SZIP SuperSeal requires a fairly strong pull of the slider. Please allow a slightly higher pulling force as compared to regular zippers. A wet surface or lubricant on the outer flanges of the sealing profile reduces the pulling force greatly. Resistance UV-lightVery GoodMicrobesSatisfactoryOil and petrolVery GoodHydrolysis (normal temperatures)GoodHydrolysis (extreme temperatures and humidity)SufficientTemperature range-30°C - +70°CLight acids and alkalis (normal temperature)Good