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

The softness and hardness of silicone products directly determine their sealing effect, tactile comfort, and compressive strength. Whether it is the need for extremely soft maternal and child products or the requirement for high hardness industrial seals, precise control of hardness is the core challenge in production. Formula design: the underlying logic for regulating hardnessThe softness and hardness of silicone products first depend on the formula design of the base material. The type of base polymer determines the initial range of hardness, while the ratio of filler to plasticizer is the key to fine-tuning. Adding inorganic fillers such as gas-phase white carbon black can effectively fill molecular gaps, restrict molecular chain movement, and significantly improve hardness and modulus; On the contrary, if it is necessary to reduce hardness, it can be achieved by adding an appropriate amount of plasticizers such as silicone oil. For example, adding 10% silicone oil to liquid silicone can reduce its hardness by approximately 2 to 5 degrees. However, it should be noted that excessive addition of silicone oil can damage the molecular weight, leading to a decrease in tear resistance and even frost spraying. Therefore, scientific proportioning must be carried out while ensuring physical properties. Blending and compounding: a clever way to quickly respond to non-standard demandsIn actual production, customers often request non-standard special hardness requirements (such as 45 degrees or 55 degrees). At this point, directly mixing raw rubber materials of different hardness in proportion is an efficient and economical solution. For example, mixing 50 degree silicone with 70 degree silicone in a 1:1 ratio theoretically yields a rubber material of approximately 60 degrees. This method is widely used in sampling or small batch non-standard orders, which can significantly reduce inventory models. However, Weishun Silicone reminds that after mixing, it is necessary to fully thin and test the vulcanization curve, and the tensile strength of the blended material may be slightly lower than that of the raw material. Products with high performance requirements should be used with caution. Sulfurization process and post-treatment: a crucial step in determining final performanceIn addition to the formula, the influence of vulcanization process on hardness cannot be ignored. The three elements of vulcanization temperature, time, and pressure need to be accurately matched. Appropriately increasing the vulcanization temperature or prolonging the vulcanization time can accelerate the crosslinking reaction rate and increase the hardness by 1 to 2 degrees Celsius; However, if the temperature is too high or the time is too long, it can lead to excessive vulcanization, making the product brittle. In addition, secondary vulcanization (heat treatment) is also an effective means of adjusting hardness. By extending the treatment time at a specific temperature, the molecular structure of silicone can be further crosslinked, thereby stabilizing and improving the overall hardness. The control of the softness and hardness of silicone products is a systematic engineering involving material science and process optimization.

Silicone plugs are a common small-sized accessory that also plays a significant role. Therefore, they cannot be said to have little effect, as their presence does help us solve some of the problems of tightness, blockage, dust and water resistance, especially in industrial products, electronic appliances and other products. The role and material properties of silicone plugs are important. Silicone plugs, most people think of silicone rubber plugs, and now silicone rubber plugs account for the majority of the market share, while other rubber types choose more silicone plugs. Therefore, for soft rubber plug products, silicone and rubber materials can be considered a way of comparing and using them in various industries, which exposes many questions. Which is better, silicone plugs or rubber plugs?Today we are going to popularize, where are their differences? First, let's take a look at the rubber plug products. They are common in our industrial products and have strong advantages, such as dust and water resistance, wear resistance, tear resistance, aging resistance, oil seal resistance, and ozone radiation. The rubber plug materials are divided into several types. The materials there can be combined by dozens of materials. Therefore, according to different needs, the rubber plug with different characteristics, such as some mechanical seals, electronic seals, transportation vehicles, and even aerospace and military industries, is most suitable.Silicone plugs are completely different. Their materials are mainly environmentally friendly, textured, and comfortable to use, so they are used in some electronic products, daily necessities, and small-scale waterproof electronic appliances. Their raw materials are made by mixing precipitation method silicone with high particle molecules, silicone gum and white carbon black. The product's molecular chain is commendable, the material is soft, and the use is comfortable! Silicone rubber plugs and rubber plugs have one thing in common, both of which can be molded in the vulcanizing machine of silicone product manufacturers. However, the difference is that they are environmentally friendly, have good resistance to high and low temperatures, have a better feeling of color when touched, and can be in contact with human skin for a long time. Therefore, their electronic headphone rubber plugs, medical rubber plugs, and even rubber plugs in food products are widely used, mainly due to the special characteristics of the material that enable their range of use.Compared with silicone rubber, the material of silicone rubber can be compared to the application of new technologies in traditional industries. Silicone rubber materials have been heard of by people in the early days, so the use of silicone rubber materials is everywhere. Nowadays, more and more silicone rubber products are reused because of their stronger substitutability, environmental performance, and various technologies, such as shape, color, etc.

Silicone products are widely used in our daily lives, among which silicone kitchenware, silicone gifts, and silicone daily necessities are currently popular silicone products worldwide. With the increasing popularity of silicone products, consumers' demands for silicone products are becoming more personalized.The silicone products that are self molded have gained the favor of most consumers in the market because they are different from the general public, and their sales and profits are higher than those of public molded products. But what should be paid attention to in the production of silicone product molds?Customer1. Silicone product manufacturers not only need mold design capabilities, but also experienced mold designers, as experienced designers can avoid many misunderstandings, save time and costs, and improve production efficiency.2. Silicone product manufacturers need to have their own mold workshops because outsourcing will increase costs, slow efficiency, and other issues.manufacturer1. Carefully confirm the sample or product design drawings;2. Confirm if there are any special process requirements for silicone products;3. Reasonably design the number of mold holes to improve production efficiency;4. First produce the sample mold, and then make the bulk mold after the customer confirms the sample.

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.

The use of kitchenware is a skill, and the same goes for silicone kitchenware. The maintenance and cleaning processes are both important to prolong the lifespan of the objects and increase their cost-effectiveness. Do you know how to maintain silicone kitchenware? Let me share with you the knowledge of maintaining silicone kitchenware.Firstly, when we buy silicone kitchenware, we first remove the labels on the kitchenware, and then clean it with detergent. While cleaning, we also need to prepare a pot of hot water for later use. Then, we put the cleaned kitchenware into the hot water and boil it for a few minutes, mainly for the purpose of disinfecting and killing bacteria.So when we use it, such as stir frying or frying, there is a lot of oil on the spatula. At this time, we cannot use steel balls or pot brushes to clean it, to avoid damage or scratches to the kitchen utensils. Use a regular dishwashing cloth and detergent to clean it. Place the cleaned kitchen utensils in a ventilated place or disinfect the cupboard for easy use in the future.In daily life, cleaning and regular maintenance of silicone kitchenware is really important, as it can prolong its use time and also consider one's own health.

Staining is a common problem with silicone products, and we often encounter situations where the surface of silicone products is very dusty. So, how should we deal with this situation? The phenomenon of sticking to dust and debris is due to the inherent chemical properties of silica, and the phenomenon of adsorption force is an inevitable factor in raw materials. Therefore, for silicone products used in daily life and placed in textiles, plush, etc., adhesion will definitely occur. However, for such phenomena, they need to be processed and solved by silicone product manufacturers.It should be noted that adsorption force is the main reason for the accumulation of dust powder in silicone products. Therefore, the additives in organic silicon and inorganic silicon are different in the raw materials. Different adsorption methods can reduce the silicon chain structure units in silicone materials. Adding a large amount of water during raw material mixing can destroy the adsorption strength of silicon hydroxyl groups and reduce the active proportion in silicone adsorption.After molding, silicone products belong to the untreated process, so the surface will have the ability to automatically adsorb dust. However, static electricity can be covered by electrostatic oil surface spraying to prevent adsorption ability. There are two methods of treatment. Before processing and production by silicone product manufacturers, anti-static glue is used to control the adsorption energy and anodization of silicone in the raw materials. Another method is to spray oil on the generated silicone product surface to achieve a smooth and anti-static effect.

They are all a process in the surface treatment of silicone products. The products produced by laser engraving and silk screen printing may appear similar on the surface, but in reality, there are still significant differences. Below, the editor will briefly introduce the difference between the two for friends: The fonts and patterns of laser engraved products have translucency; Screen printed products are opaque. Laser engraving is similar to the carving form of stone tablets, and there will be a concave feeling when touched by hand.The color of the font and pattern of laser engraved products is the material color, and the base color is the ink color; At this point, silk screen products are exactly the opposite of laser engraved products. In terms of wear resistance, silicone products using laser engraving technology are higher than those using screen printing technology. The patterns carved from radium will not wear out over time, but their disadvantage is that they cannot be as colorful and vivid as silk screen products. The principles of the two processes are different: laser engraving uses laser burning to treat the surface of the product, which belongs to the optical principle; Screen printing is a physical principle that allows ink to adhere to the surface of a product.Price difference: The price is determined based on the difficulty and size of the font and pattern that need to be processed for the product. The specific price will be quoted in detail by professional laser engraving and screen printing manufacturers based on the actual situation. The full name of silk screen printing is screen printing, which works by exposing graphics to a screen and performing ink leakage printing through ink. So screen printing is also plate printing. The same screen printing plate only needs to change the color of the ink to print various different colors according to customer requirements, and multiple colors can be printed on the same pattern at the same time. Nowadays, multi-color screen printing machines are very popular in the market. Laser engraving, due to its laser burning process, results in a concave pattern when touched by hand; Screen printing does not damage the surface of the product. After printing and baking, touching with your hand will reveal that the graphic is convex upwards. Compared to laser engraving, screen printing has a richer and more three-dimensional pattern hierarchy, and the color of the pattern can also be varied. Moreover, the screen printing process does not damage the surface of the product. But the silicone products carved with radium are more wear-resistant and transparent. Both have their own advantages and disadvantages, and are indispensable processes in our silicone products.

More and more silicone products are becoming popular in the market, inevitably with advantages and disadvantages. After using some silicone products for a period of time, the surface may not be smooth enough and there may be a sticky feeling, especially in kitchen utensils or silicone phone cases. What is the reason for the uneven surface of silicone products?1. Caused by raw material issues or improper maintenance.2. It is unreasonable to control and use curing agents during the mixing process of raw materials. The amount of curing agent added is not fully cured, resulting in a sticky surface of the product.3. During the kneading process, the curing agent and silicone gel are unevenly stirred, and the mold solidifies while curing, causing deformation of the product due to differences in hardness and hardness after vulcanization.4. When cleaning the machine, if the mold is not cleaned, it will not be smooth enough. The residue in the mold can cause unevenness in the product, resulting in an uneven surface and insufficient treatment, such as the absence of secondary vulcanization and spray paint.In short, the production of silicone products should pay attention to every detail to avoid unnecessary cost waste.

The qualification standards for silicone kitchenware are mainly based on GB 4806.1-2016 "Food Contact Materials Part 1: General Requirements", which provides detailed specifications for the definition, requirements, testing methods, etc. of silicone materials. Specifically, the qualification standards for silicone materials include the following: 1. Safety requirements: Silicone materials must not contain harmful substances.2. Physical requirements: silica gel material shall have the characteristics of using machinery, physics, kinematics, wear, aging resistance, etc.3. Thermal stability: Silicone materials should have thermal stability that meets application requirements and can maintain the characteristics and stability of the material under elevated temperature conditions.4. Soakability: Silicone materials should have soakability that meets application requirements, can directly come into contact with food without causing adverse reactions.5. Production process requirements: The production process of silicone materials must comply with safety production, environmental protection, hygiene and other requirements. In addition, silicone materials are required to pass the following tests in the GB 4806.1-2016 standard to ensure their safety:Physical performance testing: The tensile strength, elongation, hardness, density, and other physical properties of silicone materials need to be tested to ensure their strength and stability.Migration testing: Contact silicone material with simulated food,? Measure the substances that migrate from food contact materials under certain time and temperature conditions.Light intensity accelerated aging test: Conduct a certain period of light intensity accelerated aging test on silicone materials to evaluate the performance changes of the material under long-term use and storage conditions.When consumers purchase silicone kitchenware, they should pay attention to the food grade environmental certification test report provided by the manufacturer, or the FDA and LFGB certification test report of the raw materials, to ensure that the purchased silicone kitchenware is safe and reliable.

In the production and customization of silicone products, screen printing, oil spraying, and pad printing are the most commonly used surface decoration processes, widely used for the appearance processing of silicone logos, patterns, scales, text, and so on. Many customers and factories encounter the same common problem: ink on the surface of silicone is easy to peel off, scrape off, wash off, and peel off after a period of use.Most people mistakenly believe that it's just poor ink quality, but in fact, silicone ink peeling is a common problem in the industry, with the core being inadequate material characteristics and process details. This article provides a brief overview of the industry's real reasons and standardized solutions.The core reason why silicone ink is prone to detachment1. Silicone material itself has poor adhesion (root cause)Silicone is an inert material with a stable surface molecular structure, low surface tension, and inherent non stick, anti slip, and isolation properties. Simply put, silicone is naturally not easy to stick to any ink.Ordinary plastics and hardware can be directly printed and colored, but if silicone is not specially treated, the ink can only float on the surface and will peel off with light friction. This is a physical characteristic of the industry and cannot be changed.2. Residual release agent and oil stains on the surface of the product (most common problem)During the silicone molding production process, in order to facilitate demolding, a very thin layer of demoulding agent, silicone oil, and dust may remain on the surface of the product. Invisible to the naked eye, but a layer of isolation film will form on the surface of the silicone gel.If the ink is not thoroughly cleaned before printing, it will not be able to penetrate and adsorb, and there is a high risk of the entire piece falling off or the tape falling off as soon as it sticks.3. Ink selection error, mixing ordinary inkMany small factories use ordinary plastic ink and universal ink instead of silicone specific ink to save costs. Ordinary ink cannot react with silicone material and is only physically attached.In the short term, the printing effect appears normal, but after friction, water washing, and changes in high and low temperature environments, it will quickly fade, peel, and peel off. Silicone with different hardness and formulations also need to be matched with corresponding specialized ink systems.4. The curing process is not standardized, and the ink is not completely dryThe adhesion of ink depends on both the material and the baking process. Common process issues include: insufficient baking temperature, too short time, natural drying, humid environment, and excessive ink spraying.Excessive ink layer can easily generate internal stress, leading to foaming and peeling; Incomplete curing can cause the ink layer to become soft, have poor wear resistance, and gradually peel off during use.5. Lack of critical surface activation treatment processHigh quality silicone printing products that do not fade must undergo surface activation treatment. The industry standard process includes: spraying silicone treated water (primer), flame treatment, and plasma activation treatment.By activating, the surface inertness of silicone can be broken, greatly improving surface adhesion and firmly bonding ink with silicone, solving the problem of ink loss from the root.Industry standard solution and improvement planIf you want silicone ink to be wear-resistant, colorfast, washable, and friction resistant, you only need to standardize the following processes:1. Thoroughly clean the surface: Before printing, professionally wipe and clean the release agent, oil stains, and dust to eliminate any residual isolation layer.2. Surface activation treatment is necessary: select treatment water, flame or plasma processes according to product requirements to enhance adhesion.3. Special ink matching: Use food grade and industrial grade corresponding silicone special ink, as well as matching diluents and curing agents throughout the process, without mixing miscellaneous ink brands.4. Standardized printing and curing: Adopting thin spray multi-layer process, strictly controlling baking temperature and time to ensure complete ink curing.5. Standard storage of finished products: After complete cooling and solidification, stack and package to avoid friction damage to the ink layer in the early stage.summaryThe detachment of silicone ink is not simply a quality issue, but a multi-dimensional process matching problem of material characteristics, surface treatment, ink selection, and curing process.A professional silicone customization factory will customize corresponding printing schemes based on product usage and environment, ensuring that the text and patterns on the surface of the product are wear-resistant, scratch resistant, washable, and will not fade after long-term use, and stably delivering high-quality silicone customized products.