Shanghai Sunland Industrial Co., Ltd is the top manufacturer of Personal Protect Equipment in China, with 20 years’experience. We are the Chinese government appointed manufacturer for government power,personal protection equipment , medical instruments,construction industry, etc. All the products get the CE, ANSI and related Industry Certificates. All our safety helmets use the top-quality raw material without any recycling material.
Creative slogan helmet
We provide exclusive customization of the products logo, using advanced printing technology and technology, not suitable for fading, solid and firm, scratch-proof and anti-smashing, and suitable for various scenes such as construction, mining, warehouse, inspection, etc. Our goal is to satisfy your needs. Demand, do your best.
Professional team work and production line which can make nice quality in short time.
The professional team provides 24 * 7 after-sales service for you, which can help you solve any problems
The ,pressure, is further reduced (e. g., to an absolute ,pressure, of 4 to 5 mm Hg). The final temperature and ,pressure, depend on whether ,low,- or high-viscosity PET is being produced. For high-viscosity PET, the ,pressure, in the final (or second) end finisher is less than 2 mm Hg. With high-viscosity PET, more process vessels are used than ,low,-
Linear ,Low,-density ,Polyethylene, Linear ,low,-density ,polyethylene, (LLDPE) is widely used not only in processing but also in daily life. Produced by a ,low,-,pressure, polymerization process, LLDPE has a linear polymer chain and short chain branch structure.
Low, density ,polyethylene, (LDPE) is the oldest form of ,polyethylene, and is produced under high ,pressure, conditions which promote the formation of a high degree of both long and short chain branching within the polymer structure. These ,characteristics, give rise to resins which are soft, tough and flexible, as well as being easy to process.
Low, Density ,Polyethylene, (LDPE) ,Low, Density ,Polyethylene, (LDPE) is a semi-rigid and translucent polymer. Compared to ,HDPE,, it has a higher degree of short and long side-chain branching. It is produced at high ,pressure, (1000-3000 bar; 80-300°C) via free radical polymerization process.
It is usually ,low,-cost, flexible, fairly rugged, and a flame/oil-resistant material. PVC can be made in either a matte,glossy or slick finish. IMSA 19-1 has a PVC jacket: PE (,Polyethylene,) Excellent electrical properties with very high insulation resistance. ,Polyethylene, can be stiff and very hard, however ,low, density PE (LDPE) is more flexible.
The 3M™ ,Safety Helmet, H-700 is comfortable but tough. Designed with a ,low, profile for improved stability and performance, the H-700 Series is engineered to provide ultimate full-shift comfort without compromising the protection against small objects striking the top of the hard hat. 3M™ ,Safety Helmet, H-700 Series Features and Benefits: Cool ...
HDPE,: Shrinkage Because ,HDPE, is a crystalline material, the shrinkage is high: about 0.015 – 0.04mm/mm or 1.5 – 4%. This will depend on the degree of orientation and the level of crystallinity in the part – and that, of course, depends on the processing conditions and even the design of the part that you’re manufacturing.
Polyethylene,, light, versatile synthetic resin made from the polymerization of ethylene. ,Polyethylene, is a member of the important family of polyolefin resins. It is the most widely used plastic in the world, being made into products ranging from clear food wrap and shopping bags to detergent bottles and fuel tanks.
cation of high-molecular-weight ,polyethylene, fiber material in ,helmets, created the misperception that ,helmets, might easily lose their form under ballistic events and potentially jeopardize soldiers’ ,safety,. Ultimately, the advantages of ,polyethylene helmets, for reduced weight and greater ballistic capability outweighed this concern.
Low, Maintenance/Limited Use Comfort-Air Series 400 is priced to be disposable, but can be used over and over again like our series 100 silicone or series 300 thermoplastic half masks. Dentec ,Safety, Comfort-Air ® Respirators fit over 99% of wearers (based on end-user fit test data).