During the production, transportation, or use of PVC craft products, various quality issues may arise, such as deformation, fading, cracking, and surface imperfections. These issues not only affect the aesthetics of the product but may also shorten its lifespan. Understanding the causes of common quality problems and mastering corresponding solutions can help manufacturing enterprises improve product quality and assist consumers in better handling issues that arise during use. This article examines common quality issues of PVC craft products, analyzes their causes, and provides solutions.
Deformation is one of the most common issues in PVC craft products, with causes primarily falling into production and usage stages. In the production stage, inadequate mold precision and unreasonable injection molding/rotational molding process parameters (such as excessively high or low temperatures, insufficient cooling time) can lead to deformation after the product cools down. In the usage stage, prolonged exposure to sunlight, high-temperature environments, heavy pressure, or collisions can cause the PVC material to soften and deform. Solutions: Manufacturers need to optimize mold design to ensure precision meets standards, strictly control process parameters, extend cooling time, and avoid demolding products before they are fully cured. Consumers should avoid placing products in high-temperature or direct sunlight environments, refrain from applying heavy pressure or colliding with products, and if products have undergone minor deformation, they can be placed in a suitable temperature environment (such as 40-50°C warm water) to soften, gently corrected to the correct shape, and then cooled to set.
Fading issues are often related to the material and usage environment. Causes include: using inferior pigments or color masterbatch, resulting in poor color fastness; products not being treated with UV resistance, leading to pigment decomposition due to long-term exposure to sunlight; and using corrosive cleaners during cleaning, damaging the surface coating. Solutions: Manufacturers need to choose high-quality coloring materials and add UV resistance additives to products intended for outdoor use or high-frequency light exposure to enhance color fastness; consumers should avoid using corrosive cleaners, take sunscreen measures for outdoor products, and if the product has slightly faded, use a special PVC refurbishing agent to gently wipe it and improve its appearance; for severely faded products, it is recommended to replace them to avoid affecting the user experience.
Cracking and aging issues primarily stem from material and environmental factors. Causes include the use of recycled PVC materials or inferior additives, leading to insufficient material toughness; long-term exposure to sunlight, high temperatures, or low temperatures, causing the material to age and become brittle; and unreasonable product design, leading to stress concentration in a particular area. Solutions: Manufacturers need to choose high-quality, environmentally friendly PVC raw materials, add appropriate toughening agents to enhance material toughness, optimize product structural design, and avoid stress concentration; consumers need to properly protect products from sunlight and temperature control, avoiding exposure to extreme temperature environments. If small cracks appear on the product, PVC-specific glue can be used for repair; products with severe cracks cannot be repaired and need to be replaced promptly.
Surface imperfections (bubbles, burrs, scratches) primarily arise during the production process. The causes include excessive impurities in raw materials, which can lead to bubbles due to poor ventilation during injection molding; uneven edges of molds, which can result in burrs due to improper demolding; and improper handling during production or transportation, which can cause scratches. Solutions: Manufacturers need to strictly screen raw materials, optimize production processes to enhance ventilation, polish mold edges to ensure smoothness, and strengthen protection during production and transportation. Consumers can use fine sandpaper to gently polish away minor burrs, and apply PVC polishing agent to improve minor scratches. Products with bubbles, severe burrs, or scratches are considered production defects, and it is recommended to contact the merchant for a return or exchange.