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

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.

In recent years, silicone dinner plates have been popular among many friends, but there are also many who are concerned that if they are heated in a microwave or oven, there may be any harmful substances released to the body? So what happens when silicone plates are heated at high temperatures? Actually, there's no need to worry about these, because silicone plates are made from food grade silicone raw materials, and silicone itself is relatively stable. Non toxic and odorless, the finished product is also problem free and can withstand high temperatures of around 350 ℃ when returned home. Advantages of Silicone Plate:1. The silicone plate adopts a split design, which can separate the baby's main food and soup, as well as fruits and rice. It is also convenient for babies to eat.2. The bottom of the silicone plate is designed with suction cups, which are non slip and not easy to overturn. No matter how you move it, it won't overturn, and you no longer have to worry about your baby overturning the bowl.3. Silicone plates are easy to clean because they are divided into compartments without any joints or places to hide food. Simply rinse them clean or put them in a dishwasher for cleaning.4. Silicone plates can not only be washed in the dishwasher, but also heated in the microwave, and can be directly placed in the refrigerator. Silicone plates can withstand temperatures ranging from minus 20 to 200 degrees Celsius without releasing harmful substances.So silicone plates can be heated, don't worry about them being unsafe.

Silicone tableware is a popular type of tableware in recent years, with its soft, durable, non-toxic and odorless characteristics that are highly favored by people. However, some people who use silicone tableware have reported that the tableware is prone to getting greasy and difficult to clean. So, today we will discuss the problem of greasy and difficult to wash silicone tableware, as well as the solutions to it.Firstly, let's take a look at the reasons why silicone tableware is greasy. Generally speaking, silicone tableware is difficult to wash and greasy because the oil stains are relatively viscous, and the surface of silicone is relatively smooth, making it difficult for the oil stains to stick on. Moreover, silicone tableware has adsorption properties. If left unwashed for a long time, a thin oil film will gradually form on the surface of the tableware, making it more difficult to clean. In addition, silicone tableware cannot use metal knives and forks. If used improperly for a long time, it can also cause scratches on the surface of the tableware, thereby affecting the cleaning effect.Now that we understand the reasons why silicone tableware is greasy and difficult to wash, let's take a look at how to solve this problem. Firstly, we need to prepare some cleaning tools, such as dishwashing sponges, dishwashing detergent, or lemon and other cleaning supplies. Then, soak the tableware in warm water and use a sponge or detergent to wipe off any stains on the surface of the tableware. If the stains are difficult to clean, you can try squeezing some lemon juice on a sponge or adding a little baking soda, and then wiping the surface of the tableware, which will have a better effect. Finally, rinse the tableware with clean water and place it in a ventilated and dry place.In addition, we can also pay attention to the following points when using silicone tableware: Firstly, do not use metal knives and forks to avoid scratching the surface of the tableware. Secondly, clean it as soon as possible after use and do not let stains adhere to the surface for a long time. Finally, do not place tableware in high temperatures or direct sunlight to avoid deformation or aging of the tableware.To sum up, the problem of greasy and difficult to wash silicone tableware is not difficult to solve. As long as we pay attention to it when using it and adopt the correct cleaning methods, we can keep the tableware clean and tidy. In addition, we can also learn more about silicone tableware to make our tableware more durable and healthy.

With the progress of science and technology and the development of society, people have been inseparable from plastic products and rubber products in their daily life. Today, I will introduce some simple methods to help you distinguish them. With the progress of science and technology and the development of society, people have been inseparable from plastic products and rubber products in their daily life. Today, I will introduce some simple methods to help you distinguish them. First, we start with the difference between plastic and rubber. Simply put, if plastic is deformed under the action of external force, it is difficult to restore to its original state, while rubber is easily restored to its original state. For example, if the rubber O-ring is stretched, it will return to its original shape immediately after loosening it. However, if the plastic product is deformed, it will not return to its original condition. In technical terms, under the action of external force, plastic deformation is plastic deformation, while rubber deformation is elastic deformation. Mainly depends on their molecular structure. The elasticity of plastics is generally less than 100%, while rubber can exceed 1,000% at most. Secondly, the production process is different. Rubber products have an additional vulcanization process. The silica gel sealing ring has an open porous structure and can absorb many substances. It is a good desiccant, adsorbent and catalyst carrier. The adsorption of silica gel is mainly physical adsorption, which can be regenerated and used repeatedly. Add acid to the alkali metal silicate (such as sodium silicate) solution to make it acidify, and then add a certain amount of electrolyte to stir to form a silicic acid gel; or add acid or Ammonium salts can also generate silica gel. Finally, plastic products may be repeatedly recycled and reused, while rubber products are not. It can only be processed into reclaimed rubber before being used again. O-rings are usually selected as large cross-section O-rings as possible. In the case of the same gap, the volume of O-rings squeezed into the gap should be less than the maximum allowable value. Silica gel has an open porous structure and can adsorb many substances. It is a good desiccant, adsorbent and catalyst carrier. The adsorption of silica gel is mainly physical adsorption, which can be regenerated and used repeatedly. Add acid to the alkali metal silicate (such as sodium silicate) solution to make it acidify, and then add a certain amount of electrolyte to stir to form a silicic acid gel; or add acid or Ammonium salts can also generate silica gel.

How to Control Silicone Rubber Molding Line Quality EffectivelyRaw Material ControlCheck silicone hardness, purity and shelf life strictly; separate different materials to avoid mixing impurities.Stable Equipment & MoldsKeep molding temperature, pressure and curing time fixed; clean and maintain molds regularly, ensure smooth venting to avoid bubbles and flash.Standard OperationFollow unified production SOP; do first article inspection before mass production.In-process InspectionSpot check size, appearance, hardness hourly; stop production timely once defects occur.Finished Product InspectionCheck appearance, dimension and physical properties; screen out unqualified goods.Environment ManagementKeep workshop dry, dust-free and constant temperature to ensure stable product quality.

To ensure that the seal plays a positive role and avoid failure, the following points must be noted:Material compatibility: Rubber materials must be compatible with the medium they come into contact with (oil, water, chemicals, etc.), otherwise swelling, shrinkage, softening, or hardening may occur, leading to failure.Working temperature: Each rubber material has its applicable temperature range. Excessive temperature can accelerate rubber aging, become brittle, and lose elasticity; If it is too low, it will make the rubber harder and lose its sealing ability. Pressure: Seals must be able to withstand the working pressure of the system, and special sealing structures with retaining rings may be required for high-pressure conditions.Surface quality: The roughness, hardness, and flatness of the metal surface (such as shafts, holes) in contact with the seal are crucial. Rough or scratched surfaces can rapidly wear down seals, leading to early failure.Installation quality: Incorrect installation (such as using violence, not adding protective covers, and not paying attention to cleaning) is a common cause of seal damage before being put into use.

Silicone, as a widely used flexible material, many users are concerned about whether it will age during use? How long is the service life of silicone? How to maintain it for longer? In fact, any polymer material will experience performance degradation over long-term use, and silicone is no exception. However, the aging rate of silicone is much slower than that of materials such as rubber and plastic. This article will provide a detailed explanation of the aging reasons, service life, and scientific maintenance methods of silicone, helping everyone to extend the use time of silicone products. Silicone does experience aging, but the aging rate is very slow. The service life of silicone products in ordinary environments can usually reach 5 to 10 years, and high-quality food grade and industrial grade silicone can even be used for more than 10 years. The aging of silicone mainly manifests as surface hardening, cracking, yellowing, loss of elasticity, decreased sealing, etc. The reasons for aging mainly include long-term high temperature exposure, ultraviolet exposure, acid-base corrosion, oil contamination contact, oxidation reaction, and long-term repeated bending and extrusion. Among them, ultraviolet radiation and high temperature are the main factors accelerating the aging of silicone gel. Long term use in direct sunlight outdoors will significantly shorten the lifespan of silicone gel. The lifespan of silicone varies greatly in different usage environments. Silicone products used in indoor dark, room temperature, and dry environments, such as silicone kitchenware, silicone tableware, silicone gaskets, etc., can almost maintain long-term stability and age extremely slowly. Silicone products that are used in outdoor, high-temperature, sun exposed, and humid environments for a long time, such as silicone hoses, silicone sealing strips, outdoor silicone accessories, etc., will age relatively faster, but are still much more durable than other materials. Medical silica gel and food grade silica gel have stronger anti-aging ability because of their high purity and less additives.The correct maintenance method is crucial for delaying the aging of silicone and extending its service life. Firstly, it is necessary to avoid prolonged direct sunlight and high temperature baking. Silicone products should be placed in a cool, dry, and ventilated place as much as possible, and should not be near heat sources, open flames, or exposed areas. Secondly, it is advisable to minimize long-term contact between silicone gel and strong acid-base, chemical solvents, engine oil, diesel and other media to avoid corrosion of the surface structure and performance degradation. When cleaning, use clean water or neutral detergent, do not use highly corrosive disinfectants, air dry naturally after cleaning, and do not dry or expose to high temperatures.In addition, avoiding silicone products from being excessively stretched, squeezed, or folded for a long time and maintaining their natural shape can effectively reduce internal structural fatigue and delay aging. For industrial silicone accessories such as seals, hoses, gaskets, etc., the surface condition should be regularly inspected. If obvious hardening, cracks, or deformation occur, they should be replaced in a timely manner to avoid affecting equipment operation. Household silicone kitchenware should avoid being scratched by sharp objects, maintain surface integrity, and also improve durability. In summary, silicone will age, but at a slow pace and with a long lifespan, it can be used normally for several years or even over a decade. By understanding the causes of aging and adopting maintenance methods that avoid light, high temperatures, corrosion, and proper cleaning, the service life of silicone products can be significantly extended.

In order to improve the cold resistance of rubber materials, researchers have adopted various methods. These methods mainly include rubber copolymerization and chemical modification, rubber blending, addition of plasticizers, rational selection of vulcanization and filling systems, etc.1. Rubber copolymerization and chemical modification Rubber copolymerization and chemical modification are effective methods to improve the cold resistance of rubber materials. By introducing monomers with large side groups for copolymerization, the regularity of rubber molecular chains can be disrupted, and their Tg and Tb can be reduced. For example, introducing monomers with flexible structures into fluororubber molecules can increase the flexibility of the molecular chains, reduce intermolecular forces, and thus improve the cold resistance of fluororubber. In addition, chemical modification methods such as epoxidation and isomerization can be used to alter the structure of rubber molecular chains and improve their cold resistance.2. Rubber blending is a common method to adjust cold resistance in rubber formula design. By combining different types of rubber, their respective advantages can be comprehensively utilized to improve the cold resistance of rubber materials. For example, combining styrene butadiene rubber (SBR) with butadiene rubber (BR) can improve the cold resistance of the rubber. This is because SBR and BR have lower Tg and good molecular chain flexibility, and can still maintain a certain degree of elasticity at low temperatures.3. Adding plasticizers is one of the effective measures to improve the cold resistance of rubber materials. Plasticizers can increase the flexibility of rubber molecular chains, reduce intermolecular forces, and make molecular segments easier to move. At low temperatures, plasticizers can act as lubricants, reducing friction and resistance between rubber molecular chains, thereby improving the cold resistance of rubber. Common plasticizers include petroleum based hydrocarbon solvent plasticizers and non solvent plasticizers.

Silicone protective covers are generally made of silicone, with a soft and elastic texture, and are often used to protect electronic and digital products from accidental drops or wear. How much do you know about the function and process of silicone protective covers? Below, I will briefly explain to everyone.Silicone protective cover function1. Prevent hard objects from leaving scratches on the phone screen or body;2. Can print various colors, beautiful and generous;3. Prevent nails from being scratched or damaged by prolonged contact with buttons, and protect the screen and buttons;4. The anti slip function; And the tactile quality is very good;5. Protect your phone from accidental drops to prevent damage. production processSilicone sleeve is a silicone product produced by high-temperature molding and vulcanization process using silicone as the main raw material.Ordinary silicone sleeves need to go through the following processes:1. Raw material preparation (also known as rubber mixing): including the mixing of raw rubber, color blending, etc;2. Sulfurization molding (also known as hydraulic molding): High pressure hydraulic press is used for high-temperature vulcanization to solidify the silicone collagen material into a solid state;3. Removing burrs (also known as deburring): The silicone sleeve products that come out of the mold will have burrs and hole debris that need to be removed; Generally completed by hand, some can use a deburring machine;4. Screen printing, this process is only used for some silicone sleeve products with patterns or logos on the surface of the silicone sleeve;5. Spray oil, silicone products are easy to adsorb dust in the air and have a certain viscosity; Spray hand feel oil on the surface of the silicone sleeve, which can prevent dust and enhance the hand feel;6. Other, including providing additional functions such as dispensing glue, laser engraving, or assembling other materials and components.