China Xiamen Juguangli Import & Export Co., Ltd Company News

What material is the mold for silicone products made of? In the production process of silicone products, the mold is a crucial tool that directly determines the shape, size, and accuracy of the product. In the selection of mold materials, different materials will bring different characteristics and applicable ranges.   Mold material for silicone products There are various types of mold materials for silicone products, including the following: Aluminum alloy mold Aluminum alloy molds are a commonly used type in the production of silicone products. It has the advantages of good thermal conductivity, high strength, and light weight, making it suitable for making small and medium-sized silicone products with simple structures. The processing accuracy of aluminum alloy molds is high, which can meet the strict requirements of silicone products for size and shape. Steel mold Steel molds are commonly used to make large or structurally complex silicone products. Steel has high hardness and wear resistance, and can withstand significant pressure and wear, so the service life of steel molds is relatively long. However, the processing cost of steel molds is relatively high, and their weight is large, which is not conducive to handling and operation. resin mold Resin molds are commonly used in some small-scale production or sample making due to their low cost and ease of processing. The molding speed of resin molds is fast, and they can quickly produce the required mold shape. However, the strength and wear resistance of resin molds are relatively poor, making them unsuitable for long-term high-intensity use. Silicone mold (for replication) It is worth noting that silicone is also used as the mold material during the replication process of silicone products. This type of silicone mold is usually formed by injecting liquid silicone into the surface of the prototype and curing it, which has the advantages of good elasticity, easy demolding, and reusability. Silicone molds are particularly suitable for making silicone products with complex structures and rich details. The selection of mold material for silicone products has a significant impact on product quality and production efficiency. When selecting mold materials, it is necessary to comprehensively consider factors such as specific product requirements, production scale, and budget.

Which is stronger and more durable, PVC or silicone? Both of them have their own abilities, but overall, silicone is more durable. Silicone has stable chemical properties, good physical properties, and is not easily aged or worn out; PVC has decent hardness and impact resistance, but its performance may decrease over time due to environmental factors. 1.Is the material stable, resistant to sunlight and heat? The molecular structure of silicone is unique and its chemical properties are particularly stable. It is not afraid of cold or heat (from minus 40 degrees Celsius to over 200 degrees Celsius), and it is not easily cracked, hardened, or brittle under wind, sun, or ozone environments. Silicone sealing rings can maintain elasticity even after being used on high-temperature equipment for 3 years; But the same PVC sealing ring, under the same conditions, will harden after about a year of use. PVC contains chlorine, and if it is exposed to temperatures above 60 degrees Celsius or direct sunlight for a long time, it is prone to damage, releasing a gas that can cause the material to become brittle and crack. For example, outdoor PVC water pipes may age and leak after 3-5 years of use, while silicone water pipes can last 8-10 years in the same environment. 2.Will it deform if it is wear-resistant or not? Silicone has a dense molecular structure and is also very elastic. After being ground or compressed, it can quickly return to its original state without leaving permanent deformation. Under the same pressure, silicone products can be ground 100000 times, with only slight scratches on the surface; But after grinding PVC products for about 50000 times, there are obvious scratches and pits. PVC has a high hardness (similar to that of a plastic ruler), and its impact resistance is better than silicone in a short period of time, but it is more brittle and easily broken by a strong impact. For example, children's toys, silicone dolls, are still in good condition after being thrown around; Toys made of PVC may crack at the corners. 3.Are you afraid of chemical corrosion? Silicone is not afraid of acids, alkalis, oils, and other substances. It will not swell or deteriorate when in contact with cleaning agents or cosmetics. Silicone has been exposed to oil stains and hot detergent for a long time, and its performance has not changed much. PVC is afraid of organic solvents, such as alcohol and gasoline, which can become soft, swollen, and even melt off when touched. For example, if the PVC keychain is stained with nail polish, the surface will become sticky and deformed soon. 4.How should I choose? If it is used outdoors for a long time, in high temperature environments, or frequently in contact with chemicals (such as sealing rings, high-temperature resistant parts), choosing silicone is more durable; If it is for short-term use, requires high hardness, and has a relatively stable environment (such as hard pipes, cheap daily necessities), PVC can also meet basic needs. The choice of materials depends on the specific application: if long-term durability and stability are important, silicone is preferred; If you want to save money and use it in the short term, and need high hardness, then PVC can be considered. These two materials each have their own advantages, but in terms of overall strength and durability, silicone is better able to withstand the test of time and environment.

What are the coloring processes for silicone products? Silicone products are widely used in daily life and industrial production due to their softness, durability, and environmental friendliness. In order to meet the diverse needs of different customers for product appearance, the coloring process of silicone products is particularly important. Appropriate coloring techniques can not only enhance the aesthetic appeal of products, but also strengthen their market competitiveness.   Common coloring techniques for silicone products 1. Screen printing process Screen printing is a commonly used technique for coloring silicone products. It uses silk screen as the printing base and is made into a silk screen printing plate with graphics and text by photosensitive plate making method. During printing, a scraper is used to press and transfer ink through the mesh holes of the graphic and text parts to the surface of the silicone product, thereby forming the same graphic and text as the original. The advantage of screen printing technology is that it can achieve high-precision pattern printing, with bright and full colors, and can print a variety of complex patterns and text. However, the silk screen printing process has a relatively weak effect on the layering and three-dimensional sense of the pattern, and there may be uneven color distribution when coloring on a large area. 2. Spray coating process The spraying process is a coating method that uses a spray gun or disc atomizer to disperse the coating into uniform and fine droplets under pressure or centrifugal force, and apply them to the surface of silicone products. This process can achieve uniform coloring over a large area and quickly cover the entire surface of silicone products, resulting in good color consistency of the product. The spraying process can also create a smooth and delicate surface effect, enhancing the texture of the product. But it also has some shortcomings, such as relatively low utilization rate of coatings, which may result in some waste of coatings; Moreover, during the spraying process, improper operation can easily lead to defects such as sagging and orange peel. 3. Transfer printing process Pad printing is an indirect concave adhesive head printing technology. First, etch the designed pattern onto a printing plate, apply ink to the etching plate, and then transfer most of the ink onto the surface of the silicone product through a silicone head. The advantage of transfer printing technology is that it can print on the surface of irregularly shaped silicone products, with strong adaptability, and can print fine patterns and text, especially suitable for products with curved or uneven surfaces. However, the production efficiency of transfer printing technology is relatively low, and for multi-color printing, multiple transfer prints are required, which may affect the accuracy of pattern registration. 4. Immersion dyeing process The immersion dyeing process involves immersing silicone products in a solution containing dyes, allowing the dyes to gradually penetrate into the interior of the silicone, thereby achieving the purpose of coloring. This process has uniform coloring, and the color can penetrate deep into the interior of silicone products, which is not easy to fade and has good washing and friction resistance. The immersion dyeing process is commonly used for some silicone products that require high color durability, such as silicone bracelets, silicone keychains, etc. However, the color selection of immersion dyeing process is relatively limited, mainly suitable for some dark colors, and it is difficult to achieve complex patterns and texts through immersion dyeing process.   Preparation before coloring silicone products 1. Surface treatment of silicone products Before coloring, it is necessary to clean the surface of silicone products to remove oil stains, dust, impurities, etc., to ensure that ink or paint can adhere well to the silicone surface. You can use specialized cleaning agents for cleaning, then rinse with clean water and air dry. For some silicone products with rough or rough surfaces, polishing treatment is also needed to make the surface smooth and flat. 2. Ink or coating selection Choose the appropriate ink or coating based on the selected coloring process and the requirements for the use of silicone products. Consider factors such as ink or coating adhesion, weather resistance, wear resistance, and environmental friendliness. For example, for silicone products used outdoors, it is necessary to choose inks or coatings with good weather resistance to ensure that they do not fade easily after prolonged exposure to sunlight. At the same time, it is important to ensure that the selected ink or coating is compatible with silicone material and does not undergo chemical reactions. 3. Color adjustment According to the color samples or color cards provided by the customer, use color matching equipment to mix ink or paint into the desired color. During the color mixing process, it is necessary to accurately control the proportion of various pigments, and through multiple color tests and adjustments, ensure that the blended color is consistent with the target color. After color matching is completed, the ink or coating should be stirred evenly to ensure color consistency.   Coloring process for silicone products 1. Positioning and fixation Place the silicone product to be colored on the workbench of the coloring equipment, and accurately position and fix it to ensure that the silicone product does not move during printing or spraying, thereby ensuring the accuracy and quality of coloring. Special fixtures or positioning devices can be used to fix silicone products. 2. oloring operation Screen printing: Install the prepared screen printing plate on the screen printing machine and adjust the distance and angle between the plate and the silicone product. Pour the prepared ink into the ink tank of the screen printing machine, start the screen printing machine, and transfer the ink through the mesh to the surface of the silicone product through the squeezing of the scraper. After printing is completed, take out the silicone product for inspection and reprint if necessary. Spraying: Connect the spray gun to the air compressor, adjust the spray amplitude, air pressure, and paint output of the spray gun. Pour the prepared coating into the coating cup of the spray gun, hold the spray gun in hand, maintain an appropriate distance and angle from the surface of the silicone product, and evenly spray the coating. During the spraying process, attention should be paid to the speed and direction of the moving spray gun to avoid uneven coating. Pad printing: Install the etching plate on the pad printing machine, apply an appropriate amount of ink on the etching plate, and then use a scraper to scrape off excess ink, leaving only the graphic and text parts. Press the silicone head onto the etching plate to transfer ink onto the silicone head. Move the silicone head onto the surface of the silicone product and gently press to transfer the ink onto the silicone product. Dip dyeing: Pour the prepared dye solution into the dip dyeing tank and control the temperature and concentration of the solution. Slowly place the silicone product into the immersion tank and soak for a period of time to allow the dye to fully penetrate into the interior of the silicone. After soaking, remove the silicone product and rinse it with clean water to remove excess dye on the surface. 3. Drying and curing After coloring is completed, the silicone product needs to be dried and cured to firmly adhere the ink or coating to the surface of the silicone. The drying method can be selected based on the properties of the ink or coating, such as natural drying, hot air drying, or ultraviolet curing. Natural drying time is longer, but the cost is lower; Hot air drying can accelerate the drying speed, but it is necessary to control the temperature well to avoid deformation of silicone products caused by excessive temperature; UV curing is suitable for some UV curable inks, with fast curing speed and high efficiency.

Why has silicone sealing ring become a key material in modern times? In medical equipment, household appliances, and industrial machinery, a seemingly inconspicuous component is quietly playing an important role - silicone sealing ring. It is not only the core component that ensures the sealing performance of equipment, but also the bridge that connects technological progress with safety requirements. From precise oxygen supply for home ventilators to efficient operation of car engines, silicone seals have become an indispensable material in modern industrial and medical fields due to their excellent high temperature resistance, aging resistance, and biocompatibility. The core value of silicone sealing rings lies in their unique material properties. Firstly, it has excellent temperature resistance and can work stably for a long time in the extreme temperature range of -60 ℃ to 200 ℃. Even special formula products can withstand high temperatures up to 300 ℃. This characteristic makes it perform excellently in high-temperature environments such as automotive engines and aerospace equipment. In terms of application scenarios, the permeability of silicone sealing rings continues to increase. In the field of household appliances, the sealing demand for products such as rice cookers, water dispensers, and coffee makers has driven the popularity of silicone sealing rings, whose non-toxic and odorless characteristics meet food contact safety standards. In the medical field, with the outbreak of the home ventilator market in the post pandemic era, the market share of silicone sealing rings is expected to grow from 60% in 2024 to 55% in 2030, and the market size is expected to exceed 330 million US dollars. In the industrial field, emerging application scenarios such as battery pack sealing for new energy vehicles and protection for photovoltaic equipment have further expanded demand. Data shows that the market size of silicone seals in China has reached 8.5 billion yuan in 2024, and is expected to exceed 13.5 billion yuan by 2030, with an average annual compound growth rate of 9.7%. In the future, the development of silicone sealing rings will focus on three major directions: high-performance, intelligent, and environmentally friendly. In terms of high performance, the company improves the tensile strength to over 10MPa and maintains a fracture elongation of over 400% by optimizing the formula, in order to extend the product life. Intelligence is reflected in integrated sensor technology, which improves the safety of equipment operation by real-time monitoring of sealing status and warning of abnormalities. In terms of environmentally friendly manufacturing, the industry is promoting the use of biodegradable additives and the development of clean production processes to reduce pollution during the production process. In addition, breakthroughs in 3D printing technology have provided new possibilities for customized sealing rings. For example, the silicone 3D printed seals developed in Germany have passed biocompatibility certification, opening up new paths for medical prostheses and precision industrial components. Silicone sealing rings, with their irreplaceable performance advantages, will continue to play a key role in fields such as new energy vehicles, medical equipment, and intelligent manufacturing, becoming the core force driving high-quality development in the industry.

How to prevent oxidation of silicone products? Silicone products have become an indispensable material in daily life and industrial production due to their environmental friendliness, high temperature resistance, softness, and durability. However, problems such as yellowing and hardening caused by oxidation have been a headache for many users. From oxidation principles, preventive measures, daily maintenance to purchasing skills, we provide comprehensive knowledge of silicone products to help you easily extend product life.   Silica gel oxidation is the result of long-term interaction between materials and the external environment, mainly influenced by the following factors: Ultraviolet attack: Ultraviolet (UV) rays in sunlight can damage the molecular chains of silica gel, triggering oxidation reactions and generating yellowish substances. For example, phone cases and outdoor items that are left by the window for a long time are often more prone to oxidation. Oxidation and pollution: Acidic substances in sweat and cosmetics penetrate the pores of silicone gel, accelerating oxidation; Ozone in the air and free radicals in car exhaust can also directly erode the surface of materials. Material defects: Cheap silicone may contain unstable additives such as sulfides and plasticizers, which can easily decompose and turn yellow; Incomplete vulcanization leads to loose molecular structure and poor anti-aging ability. Extreme environment: High temperature, humidity, or long-term exposure to chemicals can accelerate the breakage of silicone molecular chains, leading to a decrease in performance.   Four Steps to Anti Oxidation: From Selection to Daily Care 1. "Polish your eyes" when making a purchase Priority should be given to high transparency raw materials: high-quality silicone raw materials (such as inlet gas phase silicone) have more stable molecular structures and stronger resistance to yellowing. Pay attention to vulcanization process: vulcanization temperature and time directly affect product performance. Excessive mold temperature or insufficient vulcanization can easily cause molecular chain breakage and accelerate oxidation. Avoid the low price trap: Low priced silicone products may use recycled materials or inferior additives, which pose a higher risk of oxidation. 2. Storage environment: "Three Avoidances and Three Requirements" Avoid light: Store silicone products in a cool and dry place, away from direct sunlight or ultraviolet radiation. Avoid moisture: Maintain ventilation, stay away from damp environments, and prevent mold and deformation. Avoid chemical substances: Avoid contact with strong acids, bases, solvents, etc. to prevent corrosion. To seal: When not in use for a long time, seal with a dark sealed bag to reduce contact with oxygen. To isolate: Store separately from other items to prevent contamination or impact. Temperature control: The storage temperature should be controlled at around 20 ℃ to avoid extreme high or low temperatures. 3. Cleaning and maintenance are "gentle first" Regular cleaning: Gently wipe with warm water and neutral detergent (such as dishwashing detergent) to avoid damaging the surface with hard brushes or abrasive cleaners. Stubborn stain treatment: Dip a small amount of toothpaste or baking soda and gently rub, then rinse with clean water. Drying method: After cleaning, place in a cool and ventilated place to air dry naturally. Do not dry at high temperatures or expose to direct sunlight. 4. Targeted protection for special scenarios Outdoor products: Silicone products that are exposed to the outdoors for a long time (such as sealing rings and handles) can be coated with a small amount of food grade lubricant to form a protective film. Kitchen utensils: Silicone spatulas and baking molds that come into contact with grease should be cleaned immediately after use to avoid residue corrosion. Maternal and child products: pacifiers, dental implants, etc. need to be regularly disinfected at high temperatures, but the time and temperature should be controlled to avoid deformation.   The oxidation problem of silicone products is not unsolvable, the key lies in "prevention first, maintenance as a supplement". From selecting high-quality raw materials, controlling storage environment, to gentle cleaning and targeted protection, every step is related to product lifespan. Meanwhile, understanding the characteristics and cold knowledge of silicone products can help you better use and maintain them. Remember: Scientific maintenance of silicone products.

Customized development of silicone wristbands has become a hot topic, with various designs such as electronic design, functionality, quantum energy, etc. emerging in recent years. Different years have seen updates in appearance and functionality. With the rapid development of today, the definition of wristbands is no longer just a spiritual symbol of the past, but has gradually become a comfort that improves the quality of life! Is customizing a wristband really that troublesome? The answer is definitely negative. The first thing to consider is to define the raw materials and color structure in the later stage of the consumer market, and then evaluate whether the drawings can achieve the expected effect. The most important factor for customizing silicone bracelets is to consider cost and process selection. If a product is positioned at the low end but chooses a complex structure and process, it will probably be more troublesome! On the other hand, silicone wristband manufacturers need to assess the quality standards of their product manufacturing processes, such as self rewiring, product hardness and softness, and stretching strength, in advance. However, for the current silicone products industry, quality and testing requirements are explained in advance according to customer needs based on drawings, and a single line sampling is carried out to achieve the desired effect. Therefore, for customized silicone wristbands, besides the necessary investment, there is no need to worry about too many ideas. The most important thing is whether your product can meet market demand!

Whether silicone rubber produces and releases toxic gases and carcinogenic substances during processes such as heat refining has sparked widespread public discussion and even caused panic among residents. After being explained by professionals, it is completely worry free and the rubber products are safe and non-toxic, so you can use them with confidence.   According to relevant professionals, the process of silicone mixing, which involves the uniform mixing and thermal refining of rubber and additives, belongs to the physical mixing process. The silica gel raw materials and ingredients are evenly dispersed, just like the "noodle" when steaming Mantou, which will not produce chemical reactions, carcinogens and toxic gases. Under normal circumstances, during the rubber mixing process, it is accompanied by the physical odor of the rubber material itself, which is not a toxic gas or carcinogenic substance, thus ensuring the safety of silicone products. Since the 1980s and 1990s, the European Union and other countries have issued a series of environmental laws and regulations. The raw materials used in silicone products have achieved green substitution and upgrading. Potential toxic and harmful raw materials have been discarded and replaced with non-toxic and harmless environmental additives and silicone raw materials, isolating toxic and harmful substances in the rubber mixing process from the source. Experts further pointed out that although the odor of silicone produced during the rubber mixing process is non-toxic to the human body, many people still feel uncomfortable. Therefore, in order to reduce the impact of odors, it is recommended to use advanced equipment such as enclosed mixers and relatively enclosed spaces for gas collection during the production process to purify the exhaust gas appropriately.   Moreover, the production of silicone products is a complex process that requires real-time monitoring and attention. Besides mechanical and human factors, they are two important aspects that affect product quality, and the intermediate inspection process is the node for discovering and solving major product quality problems. Therefore, maintaining normal machine operation, good mold quality status, continuously strengthening the operational skills of molding operators and quality inspectors, and improving quality awareness are effective measures to reduce production defects, and are also a major benefit for silicone product factories.

Sealing rubber rings have their presence in various industries, especially in our electronic products. As a sealing, dustproof, and waterproof material, it has become one of the irreplaceable materials. Therefore, more and more products will be customized according to their own product appearance. However, some complex and varied design structures still have a certain impact on the waterproof interference fit, deformation, and shrinkage of the product. So, what issues should we pay attention to when customizing sealing rings?   Firstly, the structure and size of the product are closely related. In the field of silicone sealing rings, due to the inability to control the dimensional tolerances of silicone products to be very precise, all products in the silicone ring field need to be appropriately reduced to ensure their assembly tightness. If the size of the product is relatively small, the interference fit required for its size and assembly position can be appropriately reduced. However, if the product is relatively large, both shrinkage and size need to be made larger during the manufacturing process. The inner diameter is designed to fit the sealing groove, which may loosen and fail to achieve a complete sealing effect. Therefore, it is necessary to ensure the normal tolerance range and expansion range of the size during design. When designing the mold, the overall inner diameter needs to be reduced to achieve a tight sealing effect by squeezing and shrinking under force. Secondly, there are issues related to the material of the product, such as the softness and hardness of the material. The softness and hardness of silicone seals under different forces can affect the sealing performance of the product. If the material hardness is too high, it may cause the sealing ring to deform under long-term stress, leading to leakage and loosening. If the hardness of the product is too low during assembly, it is due to the influence of force, back and forth friction, or problems such as flipping and displacement during assembly, resulting in poor fit or insufficient tightness during assembly, which affects the service life. So the material selection of the sealing ring is quite important, in addition to its softness and hardness, it also has a significant impact on its material, such as tensile strength, friction resistance, and deformation rebound strength, such as high tensile silicone, oil emitting silicone, high rebound silicone, and other different types of rubber.   The precision in the production and processing process also needs to be prevented and controlled, such as the precision of the mold and the thickness of the fractal line. For silicone rings that are relatively precise and small, strict control is required over their cloaking, self-healing, and processing dimensions.

Is it normal for silicone products to have an odor? Silicone products are widely used in the fields of mother and baby, medical, electronics, industry, etc. due to their high temperature resistance, corrosion resistance, biocompatibility, and other characteristics. However, newly purchased silicone products often come with a slight odor, causing consumers to doubt their safety and quality.   The source of odor in silicone products: Production residues Silicone products need to be formed through vulcanization process, with vulcanizing agents acting as catalysts to promote cross-linking and curing of silicone molecules at high temperatures. Although vulcanizing agents may evaporate after molding, some low-quality vulcanizing agents may still have a pungent odor and have a volatilization period of several weeks. In addition, additives such as release agents and colorants may also have residual odors due to improper process control. Raw material characteristics Industrial grade silicone may be mixed with recycled materials or non environmentally friendly catalysts to reduce costs, resulting in a strong odor. Food grade and medical grade silicone use platinum vulcanizing agent, with very little residue and a lighter odor. For example, a certain brand of silicone nipple has been tested and found to have only 1/5 of the residual sulfurizing agent of ordinary silicone, making the odor almost imperceptible. Packaging and storage environment Silicone products may absorb the odor of packaging materials such as plastic bags and cardboard boxes in sealed packaging, and are particularly prone to mold odor in humid environments. A comparative test in a certain laboratory showed that after being stored in a closed environment for 30 days, the odor intensity of the same batch of silicone products increased by 40%.   How to determine if the odor is normal: Odor intensity and duration The slight rubber smell of new silicone products is a normal phenomenon and can usually dissipate naturally after being placed in a ventilated environment for 3-7 days. If the odor is pungent and lasts for more than 15 days, or if the odor worsens after heating, there may be defects in the raw materials or processes. For example, a consumer purchased a silicone spatula that had a burnt smell during its first use, and upon testing, it was found that the vulcanizing agent exceeded the standard by three times. Usage scenarios and safety standards Food contact grade silicone must comply with relevant standards, and its odor threshold is much lower than that of industrial grade products. If silicone products are used to hold food or come into contact with infants and young children, caution should be exercised even if the odor is mild. In a certain case, a silicone placemat labeled as "food grade" caused allergies in children due to residual sulfurizing agents. After inspection, it was found that its heavy metal content exceeded the standard.

As for why silicone rubber products turn yellow, in fact, silicone yellowing is not its essence. Silicone rubber raw materials are composed of hundreds of thousands of molecular crystals, and adding different components can change their composition freely. Therefore, even if there are hundreds of thousands of molecular chains that have not undergone chemical reactions, they will still turn yellow due to external obstacles such as vulcanizing agents, raw materials, anti yellowing agents, etc.   As for silicone vulcanization, most silicone rubber product manufacturers use ordinary vulcanizing agents, which can be used in many products. When used as high transparency or semi transparent products, white often appears yellow when it is transparent. Therefore, many manufacturers will use anti yellowing vulcanizing agents and add anti yellowing agents for high transparency and semi transparency products, which will not cause discoloration. It can be guaranteed that there will be no color change during the secondary odor vulcanization process in high-temperature vulcanization production, and the product will not undergo color change after long-term use.   In addition, there are certain factors in terms of raw materials. Generally, transparent silicone rubber raw materials are mainly reinforced with white carbon black, and the amount of white carbon black used is lower in material cost and has different performance adjustments. Therefore, while improving other properties, the anti yellowing effect will also be affected. Therefore, as the material itself changes, it is more affected by the quality of the material itself.   Another reason is that transparent silicone rubber products are not preheated during use, resulting in yellowing of ordinary precipitation method silicone rubber. Therefore, transparent silicone rubber products may have some yellowing effects, and it is recommended not to expose them to prolonged sunlight or acidic or alkaline liquids.