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

The color matching of silicone products is quite important in production. For color matching and color matching work, operators need to have keen color perception and rich operational experience. Throughout the color matching process, follow the principle of light to dark and flexibly use various color masterbatches. The color matching in the color box of silicone products has two different color concepts. Color matching is the first color that we have a target color, and then we use our own experience to match colors, proportionally match various color masterbatches, and then match products that are close to the target color. Color matching is the process of adjusting existing colors to products that are close to the target color. The color matching operation between two people must be delayed according to the changes in color, and different colors need to be formulated and refreshed from the beginning. For the color matching work of silicone product color boxes, it is necessary for the operator to have rich operating experience and good color discrimination ability, and to flexibly use them based on their understanding of various color masterbatches.And the entire color matching process must be based on a slow transition from light to dark colors. Each color matching and color adjustment requires corresponding data recording. It is important to know that sometimes the data is accurate. Record the amount of colorants until the actual color is close to the target color. Summarize the color matching and color adjustment formula and record it to facilitate effective data accumulation for the next time and shorten the color matching and color adjustment time. During the color matching process of silicone products, attention should be paid to the application of mutual color fading. The so-called color fading refers to the use of the characteristic of two dyes reducing each other. For example, if there is a blue color with red light, if the product with excessive red light is considered unqualified, a small amount can be added.

Many families use dishwashers to clean dishes, so some consumers are confused. If I am using silicone tableware or kitchenware, can I use a dishwasher to wash? For example, a silicone bowl is a high-temperature molded silicone product made of food grade silicone material, and the color can be freely selected and customized. The surface of the silicone bowl is smooth, the material is soft, waterproof, and will not scratch or tear when washed in the dishwasher.In fact, the vast majority of silicone products produced from silicone are washed with clean water, such as silicone bibs. If a baby gets dirty, add some detergent or cleaning solution, rinse with water, and the whole product will return to its fresh appearance when just bought.With the influx of a large number of silicone kitchenware into the market, more and more silicone kitchenware is widely used in households. Although porcelain bowls may look high-end, washing them in a dishwasher is still not as reassuring. The strong collision force can scratch or shatter the surface of the bowl. And silicone bowls won't worry about such problems. Silicone products have good temperature resistance and can normally withstand temperature tests ranging from -40 ℃ to 240 ℃. But silicone is relatively soft and will deform under pressure. Moreover, ordinary silicone products are easily damaged when in contact with sharp objects. If there are other sharp utensils in the dishwasher, they need to be sorted and placed properly to avoid damage caused by silicone products coming into contact with sharp objects during the dishwashing process. In short, it doesn't matter which layer silicone products are placed in the dishwasher, it depends on the placement of your utensils. As long as you pay attention to the classification and placement, there's no need to worry.

Silicone release agent is an indispensable auxiliary material in the production of silicone products, which can effectively reduce the adhesion between molds and products and ensure the quality of product molding. Different types of silicone release agents are suitable for different scenarios and have their own characteristics in terms of usage. When selecting, it is necessary to consider production needs and mold conditions. The following are the usage methods and characteristics of common silicone release agents: Material and Type1. Solvent based release agent: using organic solvents as carriers, containing effective ingredients such as silicone oil and wax, suitable for most silicone molds, especially for demolding complex shaped products.2. Water based release agent: Using water as a carrier, it has good environmental friendliness, low odor, and is friendly to operators and the environment. It is commonly used in production scenarios with high environmental requirements. 3. Solvent free release agent: It does not contain solvents and exists directly in solid or paste form. It needs to be uniformly attached to the surface of the mold by heating or applying tools, and is suitable for high-temperature molding processes. Basic usage steps (general process)1. Mold pretreatment: Before demolding, the surface of the mold needs to be thoroughly cleaned to remove residual silicone debris, oil stains, dust, and other impurities. Special mold cleaning agents or alcohol can be used to wipe the mold surface to ensure it is dry and smooth, and to avoid impurities affecting the adhesion effect of the release agent.2. Selection and dilution of release agent (if necessary): Select the appropriate type of release agent based on the material of the silicone product, the complexity of the mold, and the production process. Partial solvent based or water-based release agents need to be diluted according to the instructions to avoid excessive concentration causing oil stains on the surface of the product, or low concentration affecting the release effect.3. Uniform application: Manual application: Use a brush, sponge, or cloth dipped in release agent to evenly apply it to all surfaces of the mold cavity, including corners, grooves, and other details, ensuring no omissions or accumulation. Spray coating method: For large-area molds or mass production, a spray gun can be used to atomize the release agent and evenly spray it, paying attention to controlling the spraying distance (usually 30-50 centimeters) to avoid local excess.4. Drying and curing: After application, wait for the release agent to fully dry. Solvent based release agents generally need to be naturally dried or evaporated with hot air (avoiding direct exposure to high temperatures on the mold); Water based release agents can promote water evaporation through ventilation or low-temperature drying; The solvent-free release agent needs to wait for it to form a uniform film on the surface of the mold.5. Reuse and touch up: After a single demolding, if there is insufficient residual release agent on the surface of the mold, it should be promptly touch up. During continuous production, it is recommended to check the demolding effect every 3-5 molds, and decide whether to reapply based on the smoothness of demolding to avoid mold damage caused by ineffective demolding agents. Special precautions for different types of release agents1. Solvent based release agent: When using, it should be operated in a well ventilated environment, away from sources of fire, to avoid safety hazards caused by organic solvent volatilization; Operators are required to wear protective gloves and masks to reduce the risk of skin contact and inhalation.2. Water based release agent: After application, ensure that the mold is completely dry before pouring silicone, otherwise it may cause bubbles or pinholes on the surface of the product; If there is rust or oxide layer on the surface of the mold, it needs to be derusted first, otherwise the release agent is difficult to adhere.3. Solvent free release agent: The paste like release agent needs to be evenly scraped with a special tool (such as a scraper) to avoid uneven thickness; When forming at high temperatures, it is necessary to choose high-temperature resistant models to prevent the release agent from decomposing and failing at high temperatures. Effect judgment and adjustmentIf the surface of the product after demolding is smooth and flawless, the edges are intact, and there is no residual silicone in the mold, it indicates that the demolding agent is used correctly; If the product sticks to the mold, has surface scratches, or has excessive mold residue, it may be due to uneven application of release agent, incomplete drying, or improper selection of type. The mold needs to be cleaned again and the usage method adjusted. If pursuing efficient demolding, adapting to complex molds, and accepting the operating standards of solvent based products, solvent based demolding agents are a reliable choice; If environmental protection and safety are emphasized, and high requirements are placed on odor and toxicity, water-based release agents are more suitable; For high-temperature molding processes or solvent-free demand scenarios, solvent-free release agents are more suitable. Mastering the correct usage method of silicone release agent can effectively improve production efficiency and ensure the molding quality of silicone products.

Many times, after purchasing a silicone product, we often feel dissatisfied with it, whether it is color difference, hand feel, odor, etc. There are certain differences, because for the silicone product industry, there are many processes from production to oil spraying to printing for a product. Therefore, many silicone products will be baked at high temperatures after production. The products that need to be baked are generally common ones that we often come into contact with, such as silicone jewelry, silicone kitchenware, silicone household products, etc., which have high requirements for the product. However, some special industrial silicone adhesives, suitable for medical grade or food grade products, also need to be baked. In order to meet the various testing requirements required by customers and satisfy them, the baking personnel in the molding department are almost busy frying the pot, from baking to cleaning the products every day, even rushing to eat! So the difference between food grade silicone products and ordinary silicone products lies in their odor, hand feel, and aging performance. During the baking process, various problems are inevitable that can lead to product defects, such as discoloration, deformation, and even burnout. So when baking, it is still necessary to pay attention to some details. After being placed in the oven, if the temperature inside the oven is too high, the flowability of the raw materials of the product will be poor, which will cause deformation of the product. Secondly, the reason for whitening is also due to discoloration caused by high temperature. If the baking time is too long, discoloration and yellowing will also occur. In recent observations, there are also certain influences in the raw materials, such as the fact that the raw material belongs to high-temperature adhesive but the colored adhesive is not heat-resistant, which can also cause discoloration and whitening of the product. Secondly, during the baking process, the product closest to the high-temperature port is more likely to be found defective, and if the baking time is too long, it is easy to catch fire.

Silicone gasket miscellaneous parts are widely used in automotive, electronics, medical and other industries, and their size accuracy directly determines the sealing performance and assembly adaptability. To achieve effective size control, it is necessary to implement systematic management throughout the production process, focusing on four core links. 1. Material Selection and Pre-control The shrinkage rate of silicone material is the core factor affecting product size. It is recommended to select low-shrinkage silicone (shrinkage rate ≤0.8%) for production, and strictly control the batch consistency of materials to ensure that the shrinkage fluctuation between batches is within ±0.1%. For products with different hardness requirements, note that the shrinkage rate of soft silicone (30 Shore A) is 3%-4%, while that of hard silicone (60 Shore A) is only 1.2%-1.5%, and corresponding mold compensation adjustments should be made according to this difference. 2. Mold Design and Precision Control Mold accuracy is the foundation of size control. The cavity processing accuracy should be matched with the product requirements: ultra-precision products (tolerance ±0.01-0.03mm) require cavity accuracy of ±0.005mm, while conventional products (tolerance ±0.05-0.1mm) can use cavities with ±0.02mm accuracy. At the same time, the shrinkage compensation should be accurately calculated according to the material shrinkage rate and product structure, and the mold cavity size should be appropriately enlarged to offset the size reduction caused by silicone vulcanization shrinkage. In addition, the mold positioning mechanism should adopt double positioning such as conical pins to ensure that the positioning deviation is ≤0.05mm. 3. Process Parameter Optimization Stable molding process is the key to reducing size fluctuation. First, control the vulcanization parameters: adopt PID closed-loop temperature control to ensure that the mold temperature fluctuation is ±1℃, and the temperature difference between each area is within ±2℃; the injection pressure fluctuation should be ≤5%, and multi-stage injection can be used to avoid uneven filling caused by excessive speed deviation. Second, reasonably set the holding time and cooling time: the holding time is adjusted according to the product thickness, and the cooling time is controlled to ensure that the demolding temperature is ≤40℃, reducing post-shrinkage deformation. Finally, avoid demolding too early to prevent size rebound due to incomplete silicone shaping. 4. Detection and Post-processing Correction Establish a full-process detection system: conduct full-size inspection of the first piece of each shift and each mold, use visual inspection systems for online automatic detection during mass production, and sample inspection with coordinate measuring machines (accuracy ±0.01mm) every hour to monitor size fluctuation in real time. For products with slight size deviation, low-temperature shaping treatment (60℃×2h, applying 0.5MPa pressure) can be used to correct the size and improve the qualification rate. At the same time, establish a shrinkage rate database, and dynamically adjust mold compensation and process parameters according to the actual shrinkage rate of each batch of products. Through the above four-link control, the size tolerance of silicone gasket miscellaneous parts can be stably controlled within the required range, meeting the application needs of different industries from conventional industrial scenarios to high-end fields such as medical treatment and semiconductors.

There are various types of customized processing techniques for silicone products, and different types of silicone products require different processes to be made. Most products cannot avoid the silk screen printing process, which is not only applied in the silicone industry. In daily life, many product patterns and logos need to be printed using silk screen printing. Due to its many advantages, silk screen printing can be recognized in many industries. Its printing process uses two-component liquid silicone and curing agent color paste to mix and produce the required silk screen colors, and finally completes the silk screen printing process through a silk screen machine. In the silicone product industry, its purpose is to achieve the engraving of product appearance patterns with fonts, such as the commonly seen silicone gift logo. The screen printing process has many excellent characteristics compared to other processes. Firstly, it has good fluidity, strong adhesive viscosity and clear effect, high and low temperature printing stability, and good weather resistance and aging performance. The patterns printed by screen printing have a more three-dimensional and tactile feel, and the screen printing patterns also have excellent peel strength, wear resistance, and brightness; It also has waterproof, anti slip, breathable, high and low temperature resistance, and outstanding leveling properties.What are the details that silicone product manufacturers need to pay attention to during the screen printing process? The quality of silk screen printing is closely related to the quality of the pattern. Therefore, in some processes such as silicone buttons and silicone gift cups, the ink applied to the product is also crucial for the silk screen printing process. High quality ink can improve the quality of the pattern. However, some products may experience color fading after long-term use, mainly due to the following reasons:1. The quality of screen printing ink is relatively poor, which affects the surface of silicone products and leads to poor screen printing effect;2. After silk screen printing, the baking temperature of silicone products is too low or the baking time is short, resulting in poor wear resistance of the printed silicone product patterns. After several uses, the patterns begin to become blurry;3. The surface of silicone products is too dirty and not cleaned before screen printing, which hinders the adsorption between screen printing ink and silicone, causing characters to fall off with a slight force.

With the continuous development of food industry technology, the raw materials for the inner and outer packaging of many products are also constantly upgrading. Among them, food grade silicone tubes are also very common in this field. Of course, in the process of understanding a new material, we should also pay attention to its stability and safety.1. Strong high temperature resistanceFor the inner and outer packaging materials of food, high temperature resistance is a very important characteristic, which directly affects the safety of the material. If the high temperature resistance is weak, it is likely to release a certain amount of water that is harmful to health.2. Good transparencyThe permeability of food grade silicone tubing is relatively high. In this way, when making materials and processes, high-tech methods can enhance the adhesion of the sol, thereby utilizing the increased permeability of the product. This can improve the visual effect for consumers.3. No odorNo matter what type of material is used in food, if there is an odor during the production and manufacturing process, it is likely to affect the quality of the product. Therefore, food grade silicone tubing also has this advantage. It does not have any odor, so it will not affect the quality of the product during the manufacturing process, and it is not easy to rot in a sealed environment.Overall, the advantages of food grade silicone tubing are quite obvious. In the process of comparing materials, it can be identified as a high-quality silicone material. Therefore, from this plastic material, it can meet the current human demand for healthy eating and ensure the production of high-quality food.

In the production process of silicone products, the demolding step is the most crucial one. No matter who is involved, they will inevitably encounter problems with difficult demolding. If such problems are severe, they will seriously affect the production efficiency of silicone products. So, how can we solve the problem of difficult demolding? 1. Surface treatment of moldsThe molding mold for silicone products should be cleaned before using the hydraulic molding machine, especially for newly removed molds that must be sandblasted first.Choose different detergents for mold.The sandblasted mold must be heated to a sufficient temperature before mold placement, and the release agent must be sprayed well before molding.It is worth noting that electroplating molds cannot be sandblasted, including resin sand. 2. Spray treatmentIn the molding process of silica gel products, silica gel products do not stick to either side of the mold or the mold spray, but sometimes it is difficult to stick.Solution: Spray bottle or other clean water. If you want the product to stick, after spraying, the product will stick to the place you want to stick. 3. Adjustment of mold temperatureThe product likes to stick to the lower half of the mold temperature. When the upper mold temperature is 175 ℃ and the lower mold temperature is 165 ℃, the product usually sticks to the lower mold when lifting the mold.In short, when silicone products are difficult to demold, do not use better demoulding agents instead of demoulding agents to facilitate drawing, or increase the use and frequency of demoulding agents. Excessive demoulding agents can easily cause dirt on the surface of the mold, which will have a certain impact on the appearance of the product. The use of excessive demoulding agents can also affect the adhesion ability of silk screen printing and injection oil in the later stage. If the above method is not very effective, it can be considered to add an appropriate amount of internal release agent when preparing the material, but it will increase the additional cost of the product.How to quickly demold silicone productsSilicone product factories know that the more modules they can produce in a day, the lower the corresponding cost. The lower the unit price of silicone sleeves, the more obvious the price advantage. Beijite Silicone Products from Silicone Products Factory, as well as the secrets revealed by customers, have these methods for improving the demolding speed of silicone sleeves.After refining raw materials, adding mold release agents and rapid curing agents, the silicone product factory enhances the fluidity of the silicone sleeve. The original 200 second silicone sleeve can shorten the molding time by 30% under the same temperature and pressureThe silicone product factory adjusts the temperature and pressure of the machine. Usually, the higher the temperature, the faster the silicone sleeve is formed. However, excessively high temperatures can also cause explosive edges.Reduce the exhaust frequency of the machine, exhaust the upper and lower molds at a slower speed. If the silicone sleeve is not particularly complex, the exhaust can be reduced twice.Silicone product factories need to work hard on molds and open more discharge tanks to allow the remaining materials to come out. If there are a large number of silicone sleeves, you can choose to open several more holes on the large mold to increase the output of each mold.

With the widespread application of silicone materials, we will see more and more various silicone products in daily life. As a result, people's questions about it will also increase. Recently, many netizens have asked whether silicone products with high hardness will become brittle? The answer is affirmative. What are the specific reasons that can make silicone products brittle? 1. Hardness of silicone products. After silicone products reach a Shore hardness of 60 degrees or above, their tear resistance and elasticity will decrease linearly, leading to the brittleness of silicone products. Most of the silicone products produced by our manufacturers have a hardness below 60 degrees on the Shore hardness scale, except for silicone buttons and some special products requested by customers. 2. Environment and duration of use. During use, if the ambient temperature is too low, the usage time is too long (such as frequent use for several years), and the environment is too humid, it will accelerate the aging rate of silicone products and cause aging phenomena. Brittle is one of its aging phenomena. Especially for silicone products for infants and children, we must clean and disinfect them promptly after use. It should be stored in a ventilated and cool place, avoiding direct sunlight. 3. Some mistakes during the production process. Unreasonable mold design structure can lead to various problems in the production process, such as mold fracturing and brittle finished products. During the processing of silicone products, if the machine temperature is too low, the heating time is too long, and the secondary vulcanization time is too long, it will cause the silicone products to become brittle easily. 4. Silicone material. The inferior silicone material does not meet the performance standards in all aspects. For example, the most basic tear resistance and elasticity properties directly lead to the brittleness of silicone products. So when choosing a manufacturer, we should check their production qualifications and corresponding testing reports for silicone materials.

Silicone rubber O-ring is the most widely used sealing product, and its production process is relatively simple, using a variety of materials. 1.Due to different formulations of silicone rubber O-rings, the tightening and stretching amounts of silicone rubber O-rings produced by different manufacturers are also different. When a product is in a long-term compressed state, there will be a scenario of compressive stress relaxation, which gradually expands over time. The longer the time, the smaller the amount of compression and stretching, resulting in insufficient elasticity and leakage. The most direct method is to increase the cross-sectional size of the product, but it can also lead to an increase in the structural size of the product.2.The correlation between temperature and the relaxation process of silicone rubber O-ring seals. Temperature is very important for the relaxation degree of silicone rubber O-ring seals. Regardless of the rubber material, it will accelerate its aging rate at high temperatures. When the temperature in the environment is higher and the product deformation exceeds 40%, the silicone rubber O-ring will slowly lose its elasticity, leading to leakage. These sealing rings will experience initial stress during the installation of silicone rubber O-ring seals in equipment. They will remain dormant for a long time and gradually relax as the temperature decreases. In some cases, they may dissipate with a sharp drop in temperature. Even if the rubber material is resistant to low temperatures, the stress generated at 20 degrees Celsius will not exceed 25%. Therefore, when setting the initial stress for installing silicone rubber O-ring seals, the factor of working environment temperature should be fully considered. 3.Compared with the above two factors, the influence of medium working pressure on the deformation of silicone rubber O-ring is greater. This is the most common situation that causes deformation of silicone rubber O-ring under various working conditions. With the development of hydraulic equipment, the pressure of hydraulic medium increases. Long term operation of silicone rubber O-ring in this high-pressure environment will lead to irreversible deformation. In this high-pressure environment, the deformation of rubber material will increase with the increase of temperature. The working fluid pressure is an important factor causing permanent deformation of silicone rubber O-ring seals. Therefore, suitable pressure resistant rubber materials should be selected according to the working pressure during design. The greater the homework pressure, the higher the hardness and high pressure resistance of the materials used.