Our Products

Polyolefin’s sold by Quimtec are the most common plastic resins for Film Extrusion, Blow Molding and Injection Molding Processes.

Our products group includes:

• Low Density Polyethylene (LDPE)
• Linear Low Density Polyethylene (LLDPE)
• High Density Polyethylene (HDPE)
• Ethylene Copolymers, such as Ethylene Vinyl Acetate (EVA) and Ethylene n-butyl Acrylate (EnBA)
• Polypropylene and Propylene Copolymers (PP)

They are polymerized plastic resins from petroleum gases. Principal gases are ethylene, basic for polyethylene (PE) and copolymer resin of ethylene and propylene, major ingredient of copolymer resins of propylene and polypropylene.

Polyolefin’s are classified as thermoplastics, which means that they can be melted, solidified and melted again. This contrasts with thermoset resins which, once molded, cannot be processed again. Most polyolefin resins for film extrusion generally are used in pellet form about 1/8 inch long and 1/8 inch in diameter. Usually they are somewhat translucent and white in color.

MOST COMMON PLASTIC RESINS USED BY INDUSTRY

High Density Polyethylene (HDPE):HDPE is used to make among other things bottles for milk, juice, water and laundry products. Unpigmented HDPE bottles are translucent and have good barrier properties and stiffness. They are well suited to packaging products with short shelf lives such as milk. Pigmented HDPE bottles generally have better stress crack and chemical resistance than bottles made with unpigmented HDPE. These properties are needed for packaging such items as household chemicals and detergents, which have a longer shelf life. Injection-molded HDPE is resistant to warpage and distortion. It is used for products such as margarine tubs and yogurt.

Low Density Polyethylene (LDPE):

A plastic used predominantly in film applications due to its toughness, flexibility and relative transparency. LDPE has a low melting point, making it popular for use in applications where heat sealing is necessary. Typically, LDPE is used to manufacture flexible films such as those used for plastic retail bags and garment dry cleaning and grocery bags. LDPE is also used to manufacture some flexible lids and bottles, and it is widely used in wire and cable applications for its stable electrical properties and processing characteristics.

Polypropylene (PP):

Polypropylene has excellent chemical resistance, is strong and has the lowest density of the plastics used in packaging. It has a high melting point, making it ideal for hot-fill liquids. In film form it may or may not be oriented (stretched). PP is found in everything from flexible and rigid packaging to fibers and large molded parts for automotive and consumer products.