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

As we all know, silk screen glass materials mainly include silk screen, mesh frame, ink, etc. Among them, ink is necessary for silk screen printing. Without ink, there would be no pattern. Next, let's talk about which types of silk screen ink can be classified according to their different characteristics.   According to the processing temperature, it can be divided into: 1. Ordinary glass ink: Natural drying, surface drying time is about 30 minutes, actual drying time is about 18 hours. Suitable for printing various types of glass and polyester adhesive paper. 2. High temperature glass ink: also known as high-temperature tempered glass ink, with a sintering temperature of 720-850 ℃. After high-temperature tempering, the ink and glass are firmly fused together. Widely used in building curtain walls, automotive glass, household appliance glass, etc; 3. Low temperature glass ink: Concave convex plate and color crystal ink, baked at 100-150 ℃ for 15 minutes, with good ink adhesion and strong solvent resistance 4. Glass baking ink: High temperature baking, sintering temperature around 500 ℃. Widely used in industries such as glass, ceramics, and sports equipment. 5. Tempered glass ink: Tempered glass ink is strengthened by instant baking and instant cooling at high temperatures of 680 ℃ -720 ℃, which melts glass pigments and glass bodies into one, achieving color adhesion and durability. After coloring and strengthening, the glass has rich color, high structural strength, safety, and resistance to atmospheric corrosion. It has good corrosion resistance and covering power.   According to the solvent used for ink adjustment, it can be divided into: 1. Water based glass ink: Developed by Zhenbo Ink as one of the first successful batches, it is a non-toxic and organic solvent free glass ink that meets EU environmental standards. It is easy to clean and will not cause harm to personnel. 2. Oil glass ink: Due to the use of ink adjusting solvents and diluents, it has a strong irritating odor that evaporates. Long term use can cause significant physical harm to operators;   According to environmental standards, it can be divided into: 1. Lead containing glass ink: Ink pigments contain metallic substances such as chromium, nickel, and lead, which often pose certain pollution hazards. 2. Lead free environmentally friendly glass ink: Due to the use of ink pigments with relatively low lead content, it greatly reduces the harm of pollution, so it is often referred to as environmentally friendly glass ink. The above is the classification of screen printing ink.  

Products produced with food grade silicone can directly touch the body and human esophagus without causing any harm, and there are many common silicone products for infants, including bibs, silicone pacifiers, silicone toys, silicone scrapers, silicone drinking cups, as well as silicone fresh-keeping covers, silicone folding cups, etc.   The development of silicone products had already moved to China before 1980, and silicone products were very popular and widely used in developed countries such as Europe and America. However, in China, although the development of various silicone products is still in its infancy, with the continuous improvement of people's living standards, everyone's awareness of health and the improvement of silicone products are increasingly valued. In our current life, silicone products have become the preferred choice for most consumers, especially for making household items, which has been largely proven. Food grade silicone products are made of high-quality materials that are resistant to high temperatures, easy to clean, have a long lifespan, and are soft and comfortable. The important thing is that the hardness can be adjusted and changed according to the environment and requirements of the product. Nowadays, most silicone product manufacturers have realized that silicone products are not only of high material quality, but also of high quality. More and more important. As for silicone bibs, in addition to the materials that many testing agencies need to certify, design and color are also very important. If silicone products can make greater discoveries and breakthroughs in production processes and materials, then in the future, silicone products will occupy a large part of household products, especially food grade silicone products, which will be the main users in mother and baby, home, life, and gifts.

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 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. 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. 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. 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.

The products produced by laser engraving and silk screen printing may appear similar on the surface, but in reality, there are still significant differences.   1. 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. 2. For laser engraved products, the color of the font and pattern 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. 3. 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. 4. 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. 5. Price difference: The price is determined based on the difficulty and size of the font and pattern of the product to be processed. 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.

How to choose high-quality food grade silicone products? In daily life, food grade silicone products can be seen everywhere, such as baby pacifiers, silicone kitchenware, baking molds, etc. They are highly favored by consumers due to their softness, high temperature resistance, and ease of cleaning. However, the quality of silicone products on the market varies greatly, and if low-quality products are not carefully selected, they may pose a threat to health. So, how to choose high-quality food grade silicone products?   1. Check the authentication label Legitimate food grade silicone products will pass relevant authoritative certifications, which is an important basis for judging their quality. Common certification marks include FDA certification in the United States and LFGB certification in the European Union. FDA certification is a safety certification for food contact materials in the United States. Obtaining this certification for silicone products means that they meet the safety standards for food contact materials in the United States and will not release harmful substances into food under normal use. LFGB certification is the EU's strict certification standard for food contact materials, with more stringent requirements and covering more testing items. When purchasing, carefully check whether there are these certification marks on the product packaging or instructions. If not, the safety of the product is questionable and it is not recommended to purchase. For example, a high-quality silicone nipple is usually clearly labeled with FDA or LFGB certification marks on the product, allowing parents to buy with confidence.   2. Observe the appearance and texture High quality food grade silicone products often have distinct features in appearance. Firstly, the color should be uniform and natural, without being too bright, dazzling, or unevenly distributed. This is because inferior silicone may add a large amount of pigments to cover up the defects of the raw materials, while high-quality silicone uses natural or safe pigments with soft and uniform colors. Secondly, the surface should be smooth and flat, without obvious bubbles, impurities, burrs, or cracks. You can gently touch the surface of the product with your hand to feel its texture. High quality silicone has a soft and elastic feel, and can quickly return to its original state after pressing; Poor quality silicone may have a rough feel, poor elasticity, slow recovery after pressing, and even leave obvious indentations. For example, when selecting a silicone cake mold, if bubbles or cracks are found on the surface of the mold, it not only affects the appearance, but may also cause leakage and other problems during the baking process, affecting the production effect of the cake.   3. Judging by smell Food grade silicone itself is odorless or only has a faint silicone smell, and does not emit pungent chemical odors. When purchasing, you can get close to the product and smell it. If there is a strong pungent smell, it is likely that inferior raw materials have been used or harmful chemicals have been added. Such products must not be purchased. Some unscrupulous merchants, in order to reduce costs, may use recycled silicone or add some inferior additives, which can produce harmful gases during the production process and remain in the products. When products come into contact with food, these harmful substances may migrate into the food, posing a threat to human health. For example, if a newly purchased silicone tableware has a pungent odor that persists even after multiple washes, it indicates that the product's quality is not up to standard.   4. Test performance characteristics High temperature resistance: Food grade silicone products need to have good high temperature resistance, generally able to withstand a temperature range of -40 ℃ to 230 ℃. Silicone products can be frozen in the refrigerator for a period of time, then taken out and boiled in boiling water for a few minutes to observe whether they have deformed, softened, faded, and other conditions. If the product can still maintain good performance under these extreme temperature conditions, it indicates that its high temperature resistance is good. For example, silicone baking tools used in high-temperature ovens are prone to deformation or even melting if their high-temperature resistance is poor, which affects safety during use. Tear resistance: High quality food grade silicone has good tear resistance and is not easily pulled apart. You can gently pull the edges or weak areas of the product with your hands to feel its elasticity and toughness. If the product is easily broken, it indicates poor quality and may have a short service life. For example, silicone gloves require frequent stretching during use, and if their tear resistance is poor, they are easily damaged, affecting the user experience. Cleanliness: Food grade silicone products should be easy to clean and not prone to residual stains. You can apply some oil stains or sauce on the surface of the product, then rinse it with water and observe if it is easy to clean. High quality silicone has a smooth surface, making it difficult for stains to adhere. It can be easily cleaned with a gentle rinse; Poor quality silicone may have a rough surface, making it easy for stains to penetrate and difficult to thoroughly clean.

How to deal with yellowing of silicone products? Silicone products are widely used in daily life and industrial production due to their softness, durability, and environmental friendliness, such as silicone phone cases, kitchen supplies, medical accessories, etc. However, many users have found that silicone products may turn yellow after a period of use, especially transparent or light colored silicone products. This not only affects aesthetics, but may also raise concerns about its safety. So, why do silicone products turn yellow? How to effectively handle it?   Reasons for yellowing of silicone products 1. Oxidation reaction The silicon oxygen bond (Si-O) in silicone gel is prone to oxidation reaction when exposed to air, high temperature, or ultraviolet radiation for a long time, generating chromophores (such as carbonyl groups) and causing the surface to turn yellow. 2. Ultraviolet irradiation Ultraviolet radiation is one of the main factors causing the aging of silicone gel. Long term exposure to sunlight can cause changes in the molecular structure of silicone gel, accelerating yellowing. 3. Environmental pollution Dust, oil fumes, nitrogen oxides (NOx) and other pollutants in the air adhere to the surface of silicone gel, and long-term accumulation can lead to yellowing. 4. Contact with chemical substances If silicone products come into contact with strong acids, strong alkalis, or certain cleaning agents (such as bleach, disinfectant), they may undergo chemical reactions, resulting in surface discoloration. 5. Material issues Low quality silicone may contain impurities (such as iron ions) or incompletely polymerized monomers, which are more prone to oxidation and yellowing.   The treatment method for yellowing of silicone products 1. Home cleaning and restoration plan Suitable for silicone products with slight yellowing, simple operation and low cost: Toothpaste wiping: Apply white toothpaste to the yellowing area, gently wipe with a soft cloth, and then rinse with water. Baking soda paste: Mix baking soda with warm water in a ratio of 1:3, apply to the yellowed area and let it sit for 2 hours before brushing. Hydrogen peroxide soaking: Soaking in 3% concentration hydrogen peroxide for 6-8 hours can decompose deep pigments (suitable for white silica gel). Citric acid scrubbing: A 10% citric acid solution combined with a nano sponge is suitable for wiping oily yellow spots. White vinegar soaking: Mix white vinegar with water at a ratio of 1:2 and soak for 15-30 minutes to reduce yellowing. 2. Chemical methods for removing yellowing Suitable for stubborn yellowing, but should be handled with caution: Bleach treatment: Dilute bleach and soak (only for white silicone), pay attention to concentration and time. Alcohol wiping: Medical grade alcohol can remove some stains and yellowing, but it may affect the elasticity of silicone. 3. Professional renovation technology Suitable for valuable silicone products (such as high-end headphone covers, medical accessories): Ozone fumigation: Professional equipment decomposes pigment molecules to restore transparency. Plasma cleaning: High energy particles bombard the surface to thoroughly remove the oxide layer. Nano titanium dioxide coating: forming a protective layer to delay yellowing.

Nowadays, new environmentally friendly materials are one of the important basic industries for the development of the national green economy. They not only provide us with various practical problems, but also solve many inconveniences in our daily lives. Among the new materials, organic silicone products are one of them, and the well-known silicone foot pads have provided us with great help in both daily life and industrial industries. Due to the excellent environmental friendliness of silicone products, the material will not emit odors when exposed to different environments for a long time, is non-toxic and environmentally friendly, and does not conflict with any substances. Therefore, silicone rubber pads have basically replaced most rubber materials in this type of product. It also plays a certain insulation role and softness. Compared with rubber pads, it is more technical and practical, and can be customized with different pattern designs in terms of appearance. The function of silicone pads is far beyond our imagination. In addition to daily life, catering, business and other industries, they can be used as auxiliary products to provide us with anti slip, shockproof, temperature resistant, wear-resistant, anti fall and other functions. With the increasing categories of silicone products industry and the gradual improvement of our lives, their functions have gradually spread around us, such as car floor mats, bathroom floor mats, furniture hardware pads, and so on. In addition, silicone adhesive foot pads have a wide range of applications in the mechanical and electronic industry. They are mainly cut, stamped, and formed by sticking adhesive paper on them. The processing technology is simple and the cost is low. Therefore, they are currently used in multiple industries, including electrical products, hardware tools, furniture and furniture, medical equipment, and light industry.

With the expansion of the scope of use of silicone products, more and more industries are beginning to use silicone miscellaneous parts as auxiliary accessories. The use of silicone miscellaneous parts is gradually becoming widespread, and it has also become a type of product that some silicone manufacturers focus on. Silicone miscellaneous parts are mainly suitable for electronic product sealing, children's toy accessories, daily product appearance decoration, and mechanical industry cushioning and shock absorption.   Customized processing is the main production method for silicone miscellaneous parts, and the unique shape of the product requires design and mold customization. The cost of mold opening for silicone molds is high, and many customers do not have a large demand, resulting in many customers being unable to accept mold costs. However, in addition to this, it still has many advantages.   Customized processing of silicone miscellaneous parts can achieve diversified and unique designs, and products can be designed without imitation, while achieving functional effects. In addition, compared with other materials, silicone raw materials can replace various materials such as rubber, plastic, etc., which are safe, non-toxic, and environmentally friendly. Silicone products have strong advantages in terms of tensile strength, tear resistance, and resistance to high and low temperatures. Simultaneously unaffected by environmental climate change. Its core advantage lies in the fact that it belongs to organic polymer elastomers, and silicon chains do not react or conflict with any substance, do not disperse, concentrate, evaporate, or melt water. Silicon molecules combine with each other to form a certain molecular chain body, thereby achieving advantages such as tensile rebound, temperature resistance, and aging resistance.   Silicone miscellaneous products can be customized and processed according to the customer's appearance design and functional requirements, such as the required hardness, sealing degree, appearance, and decorative effect of the product. After assembly, if the silicone miscellaneous parts cannot meet the usage requirements, they can be adjusted and repaired according to the customer's ideas and design. If the product needs to be glued, it can be repaired. However, if the product involves reducing the amount of glue, it can be more complicated. Therefore, customers need to carefully understand the material and process of silicone rubber products when designing drawings. Of course, the design drawings can also be entrusted to us to complete, and we can provide targeted solutions to the customer's product design and functionality from a professional perspective.

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. 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. 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.

What are the details of silicone product processing technology? Silicone products are widely used in medical, baby products, kitchen utensils, electronic products and other fields due to their environmental protection, durability, high and low temperature resistance and other characteristics. However, the processing technology of silicone products is complex, involving multiple links and details. 1. Raw material preparation and quality control The processing of silicone products begins with the preparation of raw materials. The main raw materials include silicone rubber, vulcanizing agents, fillers (such as white carbon black and silicone oil), plasticizers, coloring agents, etc. Among them, silicone raw rubber needs to have the characteristics of high purity and low impurities to ensure the biocompatibility and stability of the product. Vulcanizing agents are key substances that promote crosslinking of silicone gel, and their types and amounts directly affect the physical and chemical properties of the product. In terms of raw material storage, the principles of dryness, coolness, and ventilation should be followed, avoiding direct sunlight and high temperature environments to prevent material aging or performance degradation. In addition, batch management of raw materials is crucial to ensure stable quality of each batch and avoid product performance fluctuations caused by material differences. 2. Mixing process: the key to uniformity and stability Mixing is the process of uniformly mixing silicone rubber, vulcanizing agents, fillers, etc. in proportion. This step requires strict control of temperature, time, and stirring speed to prevent premature vulcanization caused by high temperature or uneven mixing caused by low temperature. Specifically, the mixing temperature is usually controlled within a certain range, and the specific value needs to be adjusted according to the material properties. The stirring speed should be moderate to ensure that the materials are thoroughly mixed and no bubbles are generated. After the mixing is completed, the quality of the mixed rubber needs to be tested, including indicators such as hardness and tensile strength, to ensure that it meets the requirements for subsequent processing. 3. Molding process: shaping of shape and performance There are various molding processes for silicone products, including compression molding, injection molding, extrusion molding, rolling molding, and injection molding. Compression molding: suitable for products with complex shapes and precise size requirements. By applying pressure through high-temperature molds and vulcanization machines, the silicone raw material is vulcanized into shape. This process requires strict control of mold temperature, pressure, and time to ensure product dimensional accuracy and surface quality. Injection molding: Combining the characteristics of liquid silicone and plastic, suitable for products with high quality requirements. Its products have excellent thermal stability, cold resistance, and electrical insulation properties, and are widely used in medical, infant products, and other fields. Extrusion molding: suitable for producing long or tubular products, such as silicone hoses, sealing strips, etc. During the extrusion process, it is necessary to control the extrusion speed and temperature to ensure stable product shape and uniform size. Rolling forming: used for producing larger products such as silicone sheets and silicone sheets. By using a rolling mill to press the mixed rubber into a predetermined shape and thickness, attention should be paid to the effects of rolling temperature, pressure, and speed on product performance. Injection molding: suitable for products with simple shapes and smooth surfaces. By pouring liquid silicone into the mold and allowing it to dry and form, the product can be removed. This process is labor-saving and time-saving, but attention should be paid to the accuracy of the mold and the design of the demolding slope. 4. Sulfurization process: Formation of cross-linked structure Sulfurization is a key step in the processing of silicone products, which forms cross-linked structures between silicone molecular chains through vulcanization, thereby improving the strength and stability of the products. The vulcanization temperature, time, and pressure need to be adjusted according to the specific requirements of the product. During the vulcanization process, it is necessary to closely monitor the operating status and vulcanization effect of the vulcanizing machine to avoid performance problems caused by insufficient or excessive vulcanization. Insufficient vulcanization can lead to low hardness and poor strength of the product; Excessive sulfurization may make the product brittle and prone to cracking. 5. Post processing and inspection: the ultimate guarantee of quality After molding, silicone products need to undergo post-processing, including trimming, deburring, cleaning, and other steps. Trimming mainly involves removing excess scraps and burrs; Cleaning is the process of removing stains and impurities from the surface of a product. During the post-processing process, attention should be paid to operational skills and safety to avoid damage or contamination to the product. Inspection is an important step in ensuring the quality of silicone products. The inspection covers multiple aspects such as appearance quality, dimensional accuracy, physical properties, chemical properties, etc. Only products that have undergone strict quality inspection and meet standard requirements can be sold after leaving the factory. 6. Safety production and environmental protection: the cornerstone of sustainable development In the processing of silicone products, safety production and environmental protection cannot be ignored. Strict adherence to safety operating procedures is required to ensure the safety of employees and equipment. At the same time, pollutants such as exhaust gas and wastewater generated during the processing need to be effectively treated to reduce their impact on the environment. The processing technology of silicone products involves multiple links and details, and each link requires strict control of quality and technical parameters. Only through precise processing techniques and strict quality management can high-quality silicone products that meet market demand be produced. With the continuous advancement of technology and the continuous development of the market, the field of silicone product processing will usher in more opportunities and challenges.