Polymer Modified Bituminous Roofing Systems

Product Overview

Description

Polymer-Modified Bituminous Roofing Systems 

 

Polymer Modifiers
Both thermoplastic modifiers and elastomeric materials are used. Thermoplastics include atactic polypropylene (APP), alpha-polyolefins (APO), isotactic polypropylene (IPP), and ethylene-vinyl acetate (EVA). Elastomerics include styrene-butadiene-styrene (SBS), and styrene-butadiene rubber (SBR).

The choice of polymer modifier has a bearing on the application method. In general, the thermoplastic sheets (APP types) are heat-fused to the substrate, as the melting point of these sheets is too high to be reliably adhered with hot asphalt. The SBS-modified sheets can be either torched or mopped. The higher softening point of APP sheets sometimes makes them favored in very hot climates, while the better low-temperature flexibility of SBS sheets is preferred in cold climates.

 

Reinforcements
Glass fiber, polyester, and combinations are commonly used, although plastic core materials have been used in some waterproofing and shingle underlayment applications. The reinforcements carry the sheet during manufacture and provide tensile strength and stability to the finished membrane.
 
Surfacings
Many BUR systems use a flood-coat of hot bitumen and aggregate as a top surfacing. While this is durable and water- and fire-resistant, the surfacing is heavy (4 to 6 psf) as well as labor- and material-intensive. Since MB sheets are factory coated, most times roofing granules or metallic foils are factory applied as well. With recent attention toward achieving more highly reflective roof surfacings, a white coating can be factory applied over the granules or even over the polymeric sheet itself. In other cases, the cap sheet is installed unsurfaced, relying upon the glass mat internal reinforcement to provide weather resistance, or is field coated with a colored or asphalt-aluminum coating. Flood coat and gravel is rarely, if ever, used with MB systems.

 

 

Technical Parameter

 

ITEM	APP/SBS Modified Bitumen Membrane Production Line Technical Parameters
Capacity ,m2/year	For 3mm-thick products ,the annual output of various modified bitumen waterproofing membrane can be 10 millions sqm per year ,with 250 annual manufacturing days per year ,2 working shifts per day and 8 hour working time per shift
Width	1000mm
Reinforcement	Polyester mat ,fiberglass, compound
Modified materials	SBS,APP,Rubber powder
Facing materials	Self-adhesive ,Silver sand ,Slate flakes ,PE film ,Aluminum foil ,etc
Linear speed	5-60m/min(adjustable)

 

 

Five parts of waterproof membrane machine
1. Coiled material production line

2. Bitumen modification preparation system

3. Thermal oil heating system

4. Cooling water recycling system

5. Lampblack management system

 

 

Company information
Changzhou Benefit Waterproof Equipment Co.,Ltd,established in 1990, is a professional manufacturer which is specialized in researching, producing, marketing and service waterproof equipment. As a private-owned enterprise, Our company is a famous supplier in the line of waterproof equipment in China, also an important supplier in the international markets. On the basis of absorbing foreign advanced science and technology, our factory has developed various kinds of advanced waterproof equipment plants, and has got many national patents. The factory is strictly in accordance with international quality system to ensure product quality. Our factory pursues the enterprise culture of sincere, realistic and innovation, adheres to the service goal of honesty, customer-oriented and win-win situation. We are looking forward to cooperating with you.