In the single-use coffee cup industry, the vast majority of commercial coffee cups are PE waterproof coated paper cups, divided into single-sided coated paper cups and double-sided coated paper cups. They are mainstream consumer goods for storing hot and cold drinks. A lot of novice cup processing manufacturers have a mistake, the production process of coated paper cups compared to ordinary non coated paper cups is relatively common, do not need to go through special process adaptation, you can use the same equipment for processing. In fact, the water-proof coating with food-grade food grade polyethylene coating layer the surface of paper paper cups has significant differences in material characteristics, molding requirements and adhesion logic compared to ordinary base paper. Common paper cup machine in the process of use, it is easy to appear coating damage, glue leakage, cup deformation and other defects. To produce a high-quality waterproof coffee cups, you have to rely on the exclusive customization process of the coffee cup maker.
First of all, from the material characteristics, laminated paper cups has a dense waterproof film, the production process has special requirements. paper cups is made of pure wood pulp paper, soft texture, easy to adhere to shape, processing tolerance high. PE coating on the coated paper cup is waterproof, impermeable, fixed melting point point, and cannot be bonded like regular paper. It can only rely on hot molten glue. Ordinary paper cup machines often use adhesive technology, which is completely incompatible with coating material. Forced production can lead to problems such as failure to bond seams, cracking and water leakage. This is also the core reason why coated paper cups must be professionally pressed.
The special thermostatic process is the core special process for manufacturing waterproof coated coffee cups. The fully automatic coffee cup maker is equipped with a special intelligent thermostatic system, which can control the temperature accurately and stabilize the optimum melting temperature according to the physical characteristics of PE coating. During processing, no glue is needed. The coating layer at the seams is fused by precise high temperature and then compacted steadily to achieve seamless sealing. This unique process not only ensures that the cup seams are tight and safe, ensures long-term waterproofing and leakproofing, but also prevents the coating layer from burning or cracking due to high temperatures, local water leakage and cup damage, and is fully compliant with the production standards of hot beverage coffee cups.
The tension-free and gentle forming process is another unique advantage, suitable for coating materials. The paper cup machine adopts drawing feed to form, in the process, the paper body of the paper cup is forced to be stretched. The coating has low toughness and is prone to brittle cracking. Pulling process will lead to the surface coating cracking, shedding, wrinkling, completely destroy the waterproof structure of the paper cup. When the finished product is filled, it quickly leaks out and rehydrates. The special coffee cup machine adopts a flat forming process with no tension, no tensile force and no tension in the whole process. It fully protects the surface coating structure of the coffee cup surface, makes the coffee cup body smooth and smooth, the water-proof layer is uniform and complete, and retains the water resistance of the paper cup from the source.
The necessity for exclusivity is even more pronounced for double-sided coated coffee cups. The double-sided coated paper cup inside and outside have waterproof film, mainly used in hot coffee and milk tea, can effectively prevent the cup body because of water absorption and softening, prevent the outer wall because of condensation and skid. The production of these high grade paper cups is difficult, common equipment cannot achieve precise adhesion of double coating, easy to appear inner and outer membrane damage, incomplete adhesion and other problems. The coffee machine is custom-made to meet the requirements of double-sided coating material. The strength of the adhesive and the integrity of the film were considered by optimizing the thermostatic pressure and molding speed. The production of double face paint cup heat resistance, no water leakage, no deformation, in line with the chain coffee brands quality requirements.
In addition, the exclusive curling process is a key detail to ensure the quality of the coated cup. The paper cup coated with waterproof film, the edge of general equipment rough rolling, it is easy to cause paper cup mouth membrane cracking, paper breakage, burr, and other phenomena. The special coffee cup machine adopts the slow rolling process step by step, compacts the double layer structure of the cup mouth evenly, so that the coating layer can be fully bonded and not damaged or cracked. The formed cup mouth smooth and firm, not only feel better, but also avoid water leakage and layering, improve the overall product qualification rate and user experience.
Overall, waterproof coated coffee cups requires professional coffee cup production process, cannot be replaced by ordinary paper cup production process. Adhesion, stretching, molding and rough-edged rolling of common equipment will completely destroy the waterproof structure of laminated paper cups, leading to leakage, deformation and scrapping of the finished product. It is necessary to mass produce high quality commercial coffee cups by using thermo-controlled molten glue, tension-free forming and precision roller nozzle, which can be completely adapted to the characteristics of coating material and keep the core properties of paper cups waterproof, heat resistant and leakage prevention to the maximum extent.
ZHEJIANG SAYEAH MACHINERY CO.,LTD
Language
