How to process the purified resin into a monomeric self-adhesive vinyl product? What molding processes (such as extrusion, injection molding, calendering, etc.) are used?
Everything starts with high-quality resin raw materials. HANKER will first strictly purify the purchased resin to remove impurities and improve the purity and stability of the resin. This step is crucial to the performance of subsequent products, because purity directly affects key indicators such as durability, ink absorption and adhesion of the final product.
After purification, HANKER's R&D team will carefully design the formula according to market demand and product positioning. In addition to the base resin, the formula may also contain a variety of additives such as plasticizers, stabilizers, pigments, adhesives, etc. to achieve the predetermined physical and chemical properties. Especially when developing monomeric self-adhesive vinyl, choosing the right adhesive system and removable glue formula is the key to making the product easy to stick without leaving residual glue.
On HANKER's production line, the purified and optimized resin mixture is molded by a calendering process. Calendering is a method of pressing a molten or semi-molten plastic into a sheet or film through the gap between two or more parallel and relatively rotating rollers. Compared with extrusion and injection molding, calendering technology is more suitable for producing large-area, uniform-thickness film materials, such as PVC calendering film.
HANKER's domestic leading calender, through precise temperature control and pressure regulation, can ensure that the resin mixture is evenly distributed during the calendering process to form a monomeric vinyl film with a smooth surface and precise thickness. This process requires not only high precision of the equipment, but also rich experience and strict process control of the operator to ensure the consistency and stability of product quality.
The calendered film also needs to undergo a series of surface treatment and coating processes to meet the specific needs of monomeric self-adhesive vinyl. HANKER uses high-standard silicon coating machines and PE coating machines to apply specific coatings to the film, such as double PE coating, which not only enhances the printing adaptability of the film, such as meeting HP Latex printing requirements, but also improves the durability and tear resistance of the product.
In order to meet the customized needs of different customers, HANKER also provides a variety of functional coating options, such as bubble-free lining and removable glue. The bubble-free lining design can effectively reduce the generation of bubbles during the pasting process, improve the aesthetics and installation efficiency; while the removable glue ensures that the product can be easily removed without damaging the surface to be pasted, leaving no traces, which is especially important for short-term or temporary applications.
During the production process of the film, HANKER can flexibly adjust the thickness of the film according to customer requirements, ranging from 70mic to 150mic. Precise control of thickness has a direct impact on the performance of the product. For example, thicker films usually have better durability and puncture resistance, while thinner films are more suitable for application scenarios that require good flexibility and fit.
HANKER also pays attention to the surface characteristics of the product, such as the choice of matte and glossy surfaces, to meet the needs of different design styles and visual effects. By optimizing the formula and processing parameters, HANKER's monomeric self-adhesive vinyl exhibits excellent ink absorption, ensuring the clarity and color saturation of the printed pattern, which is particularly important for commercial advertising adhesive materials.
While pursuing product quality and technological innovation, HANKER never forgets to fulfill its environmental responsibilities. The use of advanced RTO (Regenerative Thermal Oxidation) environmental protection equipment has achieved an exhaust gas treatment rate of up to 99.9%, significantly reducing environmental pollution during the production process. HANKER also actively promotes the participation of all employees in environmental protection practices, from raw material procurement to production emissions, every link strives to meet green and low-carbon standards, and supports sustainable development with practical actions.
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