The solventless machine is widely used for flexible packaging industry with good performance, green environmentally friendly, low energy consumption, no residual solvent and high precise coating.
Now Sinstar has several series of solventless laminating machines, including the series of WRJSi9, WRJi9, WRJFi9, SIL90, WRJSLi5, C180, E280, S380. Compared with the single station solventless laminating machine, the double station type mainly has the following advantages.
WRJSi9
On June 8, 2021, Sinstar has launched a new product - three-layer solventless laminator and machine model is WRJSi9.
Three-layer composite machines, as the name implies is a solventless machine realizing one-time composite forming of three-layer materials. In recent years, there is a high-speed development for solventless composite, and the requirements for composite process and equipment functions are increasing. The solventless lamination equipment which can carry out the substrates compounding of multi-layer materials on a composite machine, is in urgent need.
Sinstar three-layer solventless machine has a reasonable structural layout, simple loading, saving time and effort, realizing one-time molding for three-layer composite, which is beneficial to improve production efficiency and product quality.
Advantages
1. Simple and convenient to load
2.Shorten the delivery term
3.Increase productivity
4. Greatly reduces the labor intensity of employees
5.Save electricity energy
6. Easy to operate
S1L90 Series
The S1L90 series solventless laminator includes models of S1L90-1000A, S1L90-1300A, S1L90-1600A.
Features
1. Combination of ergonomics &green packaging technology
2.Redefining tension(Rational tension)
3.Farewell to sensuous tension（Tactile tension)
4.Same tension at high and low speeds
5.Digital tension system
6. External roll-diameter status display
WRJ i9 Series
The WRJ i9 Series solventless machine includes models of WRJ i9-1000A, WRJ i9-1300A, WRJ i9-1600A.
Advanced systems
CWDS: Coating Weight Directly Inputting system
MRPS: Multiple Ratio Protection System
CCMS: Coating Clearance Memorizing System
FCS: Fast Cleaning System
PCWD: Precise Coating Weight Detecting system
WRJF i9 Series
The WRJF i9 Series solventless lamination machine includes models of WRJF i9-1000A, WRJF i9-1300A, WRJF i9-1600A.
Characteristics
1. Simple Operation.
2. Automatic analyzing.
3. One-button multiple-points position system.
4. High viscosity glue feeding and coating applicable.
5. Accurate swinging arm tension to control aluminum foil movement.
6. Active unwinding for aluminum foil through motor control.
The solventless machine adopts a method that can composite two or more substrates by using solvent-free adhesives. The solventless laminating machine has a wide application with the advantages of environmental, hygiene, and high efficiency, especially used for the packaging industry of the food and the drug.
Development Of Solventless Laminating Machine
In 1974, the German company adopts the single component solventless-free adhesive in industrial production, marking the formal promotion of solvent-free composite.
In the 1980s, there was rapid development in developed countries such as Europe and the United States.
At the end of the 1990s, Japan gradually began to play an important to no solvent composite and had a great development. In India, Russia, Brazil, the solventless composite has gradually become the leading composite process.
In 1985, China had introduced the production technology and equipment of the solvent-free polyurethane adhesive from Germany, thereby enters the era of solventless composite process.
Competitive Solventless Laminating Machine Manufacturer In China - Sinstar
Sinstar, which is the abbreviation of Sinstar Packaging Machinery Co., Ltd, was founded in 2005. It is a professional company which focused on the R & D, production, sales and service of a solventless laminating machine. It is located in the National High-tech Industrial Park, Rongchang District, Chongqing, with an annual production capacity of 200 sets. Since its establishment, the company has characterized simple-operate, safety, high durability and perfect service. Sinstar has become one of the most competitive solventless laminating machine manufacturers in China.
Solventless lamination machine supplied by Sinstar, has independent innovation patented technology, including "CCMS coated clearance memory system"; "FGPS foolproof glue preparation system"; "precision metering control system"; "coating weight directly inputting system", "ratio pressure protection system" "quick cleaning system", "zero error tension control system", etc.
Sinstar has 135 authorized patents, including 7 authorized invention patents, 123 utility model patents, 5 appearance design patents. Sinstar is devoted to providing green and environmentally friendly solventless composite packaging machinery, technical guaranteeing the safety of food and drug packaging.
Sinstar is your trustworthy solventless laminating machine manufacturer and the solvent-free machine supplied by Sinstar has advanced systems, easy-to-operate, high safety, high efficiency and long service life.
In the flexible packaging color printing composite industry, the solvent-free adhesive will be the direction of future development, affecting the development trend of the flexible packaging industry. As the enhanced awareness for environmental protection and the importance for the safety of food packaging, how to reduce costs and improve competitive advantage, producing the commodities conforming to the hygienic requirements for food packaging, is the problem of most food manufacturer concerning. The promotion of solventless adhesive in the market is in line with this trend. In Europe, the solvent-free adhesive has a share of 40% in the flexible packaging composite adhesive market.
High-temperature resistant solvent-free adhesive
The universal solvent adhesive is suitable for general flexible packaging composite applications, not suitable for cooking with a temperature above 100 ° C . Usually the solventless adhesive can be classified into 3 grades. Low-grade type is generally used for dry content packaging with lightweight and simple structures. Medium grade type is typically applied to multi-layer composite products which can withstand load or having a liquid content and is resistant to cooking and steaming. High-grade types could have adhesive applications with certain tolerances. Currently, the solvent-free adhesive is rarely used for high-temperature cooking, but the solventless composite material completely replacing the dry composite material and developing high temperature resistant solventless adhesive will be inevitable trends.
Two-component coating solvent-free adhesive
Two-component coating solvent-free adhesive is developed in 2016. The so-called two-component coating, that is, a primary agent, a curing agent, is a separate coating, when the two-component adhesives are mixed, the curing reaction is rapidly generated and the corresponding mechanical strength is achieved. The entire composite process does not require an ultraviolet lamp. It is a new type of flexible packaging composite technology. It has been widely concerned in the flexible packaging industry, mainly because it has the advantages of separate coating, quickly curing at normal temperature, easy to operate. It is clear that the two-component coating type will become the trend of solvent-free adhesive in the future.
Solvent-free adhesives are the trend and direction of flexible packaging composite adhesives, with the advantages of high efficiency, environment-friendly, lost-cost, no residual solvent, high safety, and high initial adhesion.
Environmentally friendly, High efficiency will be the main trend of future packaging industries. In terms of composite adhesives, solvent-free adhesives will replace traditional solvent-based adhesives, which has become a consensus of the packaging industry. The solvent-free adhesive is more widely used in the flexible packaging industry.
What Are Solvent-free Adhesives
Solvent-free adhesives are a viscous substrate, which can connect together by means of their viscosity. They are viscous liquid at normal temperatures, such as an epoxy resin which Is one of the most important auxiliary materials and has extremely wide applications in the packaging industry. Solvent-free adhesive mostly is adopted for the solventless laminating machine, also can be used on existing solvent drying compound equipment which is suitable for many color printing plants to improve the high residual solvent, reducing production costs, no need to input new equipment.
Composite adhesive for flexible packaging is constantly undergoing technical improvement and innovation. The new type of solventless adhesive performance can completely meet the dry composite requirements among the most flexible packaging materials and can be used on a solvent dry compound machine. It can meet the requirements of drug & food packaging.
Features And Advantages Of Solvent-free Adhesives
Solvent-free adhesive is an ideal replacement for solvent adhesive.
1. Effectively reducing the residual solvent
Since it is a solvent-free adhesive, the adhesive itself does not bring the second solvent contamination, the printed film can further decrease the residual solvent when passing through the drying oven, adopting a solventless adhesive is quite effective to control residual solvent.
2.High initial adhesion
The high initial shear strength of solventless adhesives makes it possible for real-time slitting and delivery without curing. This performance is quite effective for shortening delivery time.
3.Relatively low cost
Usually, the required coating amount is 1.6g to 2.4 g per square meter, not any solvent used, so its composite cost per square meter will significantly lower than solvent-based composite.
4.Improving the working environment, reducing pollution, reducing work strength, and avoiding the risk of the fires
Since the solventless adhesive does not need to be diluted, it can be directly used for production, reducing the labor of the operating worker and also avoiding the concentration of solvent in air, which is advantageous for workers. Of course, without the existence of solvent, it also can avoid the hidden risks of fire.
5.Effectively reducing the occurrence of quality accidents
With a solventless composite product, it can directly see the quality of the product. Only the appearance and composite intensity of the product should be carefully checked when going off the production line. After a period of time, as the increase of adhesive composite strength among the adhesive molecules, the appearance will become better. For the composite of the aluminized product, the solventless adhesive can effectively prevent aluminizing transfer.
Solventless laminator adopts green environment-protection technology. It has occupied a high market share in Europe and the United States, accounting for 80% to 90% of the composite machine. It can ensure the non-pollution of the composite packaging of food & drugs, increasingly applied to the composite film packaging industry and the flexible packaging industry.
Solventless laminator has many advantages such as reducing cost, improve product quality, environmental protection, safety and stability production, which has a high production practical value.
1.Taking the S1 L90 series solventless lamination machine as an example, solvent composite is safer and more healthy, compared with the ordinary dry compound process, 100% of the adhesive can be achieved when using S1 L90 Series laminator, because there is no solvent composite in the production process, avoiding the use of organic solvents, at all solve the residual solvents problem. Solvent-free composite is a healthier composite process. And there is no solvent residue, reducing the contamination of packaging content, especially for the packaging of food, pharmaceuticals, etc.
2. Solventless composite equipment can reduce production costs. It doesn’t have a drying channel, so the structure is compact, with small occupied space. The equipment cost is low, which can significantly reduce the cost of composite film production.
3. In general, the coating amount solvent-free composite is usually from 1.3-1.8 g / m2, while dry composite is 2.5-4 g / m2, and therefore, the amount of adhesive consumption can be reduced by about 50% compared to dry composite. Although solvent-free glue has a higher price, the overall raw material cost can also decrease by about 20%.
4. There’s no solvent-type adhesive and can reduce energy consumption. At the same time, eliminating the long-time volatility of the solvent adhesive in a drying oven.
5. Solvent-free machine has a high-speed composition production line and the highest speed can reach 480m/minute, generally approximately at 300m/minute, with high production efficiency.
6. The structure of the solvent lamination machine is compact with fewer operators, reducing labor costs.
7. Solvent-free composite has a high safety and fire and explosion risk can be reduced to the minimum. The factory and production workshops do not require special measures for fire prevention, explosion-proof.