Thermoplastic Line Marking

Feb 28, 2017 at 11:06 o\clock

Advantages of Pavement Marking Tapes

Pavement marking materials mainly consist of thermoplastic paint, cold solvent paint and marking tapes. Thermoplastic paint and cold solvent paint are the most common materials for line marking projects. However, pavement tapes, a new marking method, have been widely used in urban road construction.

pavement marking tapes 

Thermoplastic paint is the most common used materials for line marking. It has advantages of long life on high volume road, quick set time, good night time visibility and excellent durability. However, pavement surface condition is an important factor that affects the performance. The road surface must be clean enough. It requires specialized installation equipment, which increase the initial cost of whole road marking project.

Cold solvent and waterborne paint cost less than thermoplastic paint. Apply and clean-up of them is also very easy. But the service life in high volume traffic road is much shorter. It also doesn't adhere well to concrete road.

Pavement marking tapes can be divided into temporary tapes and permanent tapes. The main materials of tapes are flexible polymer, synthetic rubber and thermoplastic paint etc.

Removable pavement marking tapes can also be used in road construction sites as temporary markers. The tapes can be placed to shift the lanes and black tapes can be used to temporarily blackout the existing markings. At the end of the constructions or within 6 months, the tapes can be pulled out off the surface without using heat, solvents, or machines. Temporary marking tapes are ideal for short-term applications such as work zones. 

Permanent tapes are designed to be long-term durable road markings capable of providing 5 to 8+ years of service life. The tapes are mainly used for marking edge lines, centerlines, legends and symbols.

Thermoplastic paint tapes, the latest launched permanent pavement tapes which are made from thermoplastic paint. Put tapes in correct place and melt, the tapes will conform and bond to the road surface.

thermoplastic paint tapes 

Advantages of permanent road marking tapes:

1. Easily installed without special equipment.
2. Durable. Providing 5 to 8 years of service life depending on the traffic environment.
3. High retro-reflectivity.
4. Environment friendly. Little damage to local environment and workers.

Pavement marking tapes also have some disadvantages: high initial cost and not suitable for old roads in poor conditions. The two factors limit the application of marking tapes.

For more info about road marking industry news, visit Roadsky News Center.

Nov 15, 2016 at 10:43 o\clock

Road Marking Project Details

Road marking is defined as devices or materials used on the road surface to convey official information. These markings are also applicable to other services used by vehicles in marking spaces for parking purposes and specified areas for other uses. The main purpose of road markings is to control and guide traffic on highways, city roads and on road crossings. They are an essentials part of traffic signs. These markings have effects of a psychological barrier and define the traffic path and lateral clearance from traffic accidents for the safety of vehicles and peddlers. Thus, these road markings are crucial for the safety of people and ensure a smooth, safe and continuous flow of traffic. There are various types of road markings present including longitudinal markings, transverse markings, unique markings and object markings to tell the driver about hazardous locations. Road markings are defined by lines, words, patterns and other devices, signs, and objects adjacent to the path for a warning, guiding, informing and guiding the travelers. These road markings are classified as transverse markings, longitudinal markings, object markings, marking for parking areas, word messages and hazardous locations marking, etc.

There are specified processes for road markings called road marking project. Particular substances like paints are formed by approved ways by authorities. The paint team use arrows, text and letters to define relative positions in measured form, thermoplastic paint gets sprayed and then reflective plastic pellets are thrown over it. The used white paint is made of raw materials of the thermoplastic resin that contains titanium dioxide pigment and small reflective glass beads in mixed form. On national highways and critical paths, this is applied using specified road marking machines and vehicles that spray the white paint under controlled environment by digital devices. Still, it is necessary to be highly precise while doing it and at the right pace suitable to conditions. So, these tasks are performed by highly trained persons and skillful steersman.

On smaller roads, the job becomes trickier as the clearances get decreased. This time, paint gets sprayed from a laying pram, defined as a single metal trolley that is fitted with a heater containing the paint fluid. One has to ensure that paint gets thrown on right rate, so lines acquire right width and thickness, to gain good patterns, the flow's timing is vital to be correct. This paint achieves solid powder form at room temperature. For preparing it, the thermoplastic paint is put into a kettle named thermoplastic pre-heater, to melt and mix the molten paint.

Yellow lines are mostly used in a two-way road as a separator, in the middle of a road. Vehicles are not permitted to cross this yellow line. Sometimes it is also used on the side of a path indicating the parking and waiting at that area is prohibited. They divide the traffic flow in the opposite direction and define the pavement edges.

Air blower machine is used to remove dust particles from the road by throwing pressurized as air on the road. This process removes dust particles from the road and thus increases the strength of paint as the material sticks directly to the road. Road cleaning machine also does the same job of removing outside matter from the road and preparing it for the road marking process.

By the coating used, road marking machines can be classified into categories like thermoplastic paint, cold plastic paint, and two-component paint type. The thermoplastic material is used hot and contains good durability and is suitable for all type roads. Cold plastics contain single or multi-component forms. This paint gets laid on a carriageway and a chemical activity forms a cohesive film. Regular hot and cold paints are formulated to make bonding with the road surface, and it holds glass beads, immediately thrown over the wet paint. Every machine of this type contains a rod as a hydraulic guide that ensures the accuracy and straightness of painting line. Before marking the road, a pre-marker is used to mark lines to increase accuracy.

Waterline paint is used for striping and adds beads of glass for reflectively. A striping truck is used for applying this. The thermoplastic resin is used while marking special pavements marks. Most highway constructions use thermoplastic type marking method, but cold plastic road marking is also used for the same as it also acts as a thermoplastic resin.