HTG has processes in place to ensure we meet the highest safety, quality and environmental standards in the design and development, manufacturing, delivery of our products. We use a common quality management system throughout the company. Our environment, equipment and procedures are designed to achieve the highest level of process control and conformance with current good manufacturing practices through every step of the manufacturing and distribution process.
An example of our quality manufacturing process is as follows:
1. Transport: All fibers used in making HTG products are from agricultural residue “Post Production Sugarcane Waste”. Freight trucks transport many tons per load from nearby farmers and distilleries. Distilleries and farms are all within a 10-15km distance of our South American paper mill.
2. Bagasse Store Yard: Trucks transporting our fibers unload all fibers next to the starting point of production.
3. Feeding Conveyor: Loading fibers onto a conveyor belt efficiently and safely relocates fibers
4. Sieve/Screen: One of many steps taken to ensure overall quality. Sieve acts to filter and remove any unwanted substances that may have found its way into the raw material.
5. Boiler: Powered by Natural Gas, our boiler produces over 500psi of steam to operate our paper making facility. With a newly installed steam turbine, all electricity used for our facility is generated on site.
6. Cooking/Pulping: The process of Semi-chemical pulping gives us the best of both worlds. The minimal application of chemicals is used to soften the binding agents (lignin) and mechanical abrasion in refiners to separate fibers from lignin.
7. Cleaning: At this point, our pulp is in liquid form (slurry) containing chemicals no longer necessary. During this step we remove all chemicals and lignin from the slurry through our chemical recovery processes for reuse.
8. Depuration: This stage is another step taken to ensure overall quality, which involves a series of machines to further cleanse and purify the slurry before whitening treatment.
9. Chemical Recovery: There are two main functions of this stage: 1. To recover the inorganic chemicals from black liquor. 2. To produce high pressure and high temperature steam for captive power generation and also provide steam for use in Pulp and Paper Mill operations. Pulp mill operations totally depend upon the chemical recovery boiler. Generally, each paper mill is linked up with one recovery boiler and hence its availability and efficient operation are of utmost importance. Unlike other types of boiler, in chemical recovery boiler the combustion takes place in reducing atmosphere output and with coarser particle sizes for higher chemical recovery.
10. Bleaching Stages: All of our bleached stationery products are whitened using ECF bleaching processes. ECF bleaching can substantially reduce but not fully eliminate chlorinated organic compounds, including dioxins, from effluent. Our modern ECF plant can achieve chlorinated organic compounds (AOX) emissions of less than 0.08 kg per ton of pulp produced. Our food packaging products are all natural and not bleached using TCF processes.
11. Paper Production Machine: Pulp is fed into the Fourdrinier machine on a moving belt of fine mesh screening. The pulp is squeezed through a series of rollers, while suction devices below the belt drain off water. The paper then moves onto the press section of the machine, where it is pressed between rollers of wool felt. The paper then passes over a series of steam-heated cylinders to remove the remaining water. A large machine may have from 40 to 70 drying cylinders.
12. Paper Rolls: The paper can now be immediately transported to one of our nearby converting facilities or stored for future use.