2019年11月20日（水）
Medical Mold - Effective Use: Medical Device Injection Molding
Injection molding enables equipment manufacturers to produce complex components with good inter-part integrity, but choosing the right materials and processes is critical.
Injection molding is a process that is suitable for the production of high-precision, complex parts for healthcare and medical applications, especially where large parts are required for part integrity. In this article, we will consider the main advantages of producing medical devices through injection molding and consider issues that may be of concern.
Wide range of application conditions, and as a liquid raw material, it has advantages in processing, making it the first choice for high-volume technical components.
Especially for medical applications, silicones have the highest purity. It demonstrates biocompatibility with recognized standards ISO 10993 and USP VI and is in accordance with European Pharmacopoeia 3.2.9. In addition, the material can withstand common sterilization methods such as steam, radiation, EtO.
Liquid injection molding (LIM) is a processing method often used to produce silicone medical devices. With this in mind, there is an opportunity to produce components by simultaneously injecting liquid silicone rubber (LSR) and engineering plastics (sometimes called 2C LSR). It is commonly referred to in the market as 2K, two injection molding, multi-component injection molding or co-injection molding. It allows the production of the most innovative solutions, combining two, three or more separate materials into one fully bonded, robust component.
The 2C LSR production method offers the opportunity to manufacture extremely complex components that are well suited for parts with a large amount of detail, such as undercuts or thin-walled sections. As a result, it provides designers with a high degree of freedom in design solutions, meaning that multiple components can be integrated into a fully bonded solution, ideal for medical applications that need to avoid dead space and create hygienic designs. Moreover, individual components are more robust and lighter to assemble than individual parts and have the potential to eliminate the risks and costs associated with secondary assembly.
It is important that only the equipment manufacturer's engineering team work closely with the silicone component manufacturer's injection engineering experts to fully enjoy these benefits.
On the one hand, tools are fundamental to any successful injection molded part. On the other hand, the biggest "disadvantage" of injection molding may be due to the complexity of the final product. Developing tool-level steel molds, hot runners or cold runners and associated process automation equipment can be expensive and in any manufacturing process. This cost must be considered.
The high initial tool cost must not be judged solely by cost, but by the investment within the life of the tool. Since injection molding - even liquid injection molding - can produce high integrity parts in very large batches, the price of the mold can be relatively low when considered piece by piece throughout the life of the program. To ensure long-term effectiveness, cost-effective and stable production, it is also important that the tool design is correct for the first time and that all aspects of tool design, construction and the entire process must be carefully considered.
The efficiency of the mold depends on options such as cavitation, parting line geometry, gates, exhaust, surface finish and auxiliary automation. It is important to ensure that the mold is strong enough to mitigate the inter-batch variation inherent in raw silicone. It also requires seamless integration with equipment for pumping, mixing, injecting, compressing, heating and ejecting components.
In terms of processing, there are two observation points. In order to avoid shrinkage problems, the thickness of the part may be limited. Parts may also require deburring but at an additional cost. Both of these issues can be solved again through close cooperation between device designers and silicone component manufacturers. For example, if the tools and process equipment are professionally designed, the edges can be eliminated.
The ability to formulate silicones to achieve specific properties, aesthetics or therapeutic properties makes them well suited for many medical devices. Injection molding of liquid silicone components creates complex geometries and designs that are not possible with any other manufacturing method. In addition to LIM, 2C LSR technology offers countless opportunities for part design and other benefits.
However, to take full advantage of the possibilities offered by silicone injection molding, you should avoid any drawbacks. Therefore, suppliers must demonstrate a deep understanding of the details involved in manufacturing silicone rubber parts and complex medical equipment. The key to success in the best solution, extended life, hygienic design, and standard and cost-effectiveness throughout the life of the product is undoubtedly the early and close collaboration between medical device designers and silicone component manufacturers.
Yuhuan Shengjiu Mould Co , Ltd. specializes in the production and supply of high-quality Medical Mould in China. The main production and supply: syringe molds, safety needle molds, oxygen mask molds, needle-free injection nozzles, and female molds. For more information visit: https://www.medicalmould.net
Injection molding is a process that is suitable for the production of high-precision, complex parts for healthcare and medical applications, especially where large parts are required for part integrity. In this article, we will consider the main advantages of producing medical devices through injection molding and consider issues that may be of concern.
Wide range of application conditions, and as a liquid raw material, it has advantages in processing, making it the first choice for high-volume technical components.
Especially for medical applications, silicones have the highest purity. It demonstrates biocompatibility with recognized standards ISO 10993 and USP VI and is in accordance with European Pharmacopoeia 3.2.9. In addition, the material can withstand common sterilization methods such as steam, radiation, EtO.
Liquid injection molding (LIM) is a processing method often used to produce silicone medical devices. With this in mind, there is an opportunity to produce components by simultaneously injecting liquid silicone rubber (LSR) and engineering plastics (sometimes called 2C LSR). It is commonly referred to in the market as 2K, two injection molding, multi-component injection molding or co-injection molding. It allows the production of the most innovative solutions, combining two, three or more separate materials into one fully bonded, robust component.
The 2C LSR production method offers the opportunity to manufacture extremely complex components that are well suited for parts with a large amount of detail, such as undercuts or thin-walled sections. As a result, it provides designers with a high degree of freedom in design solutions, meaning that multiple components can be integrated into a fully bonded solution, ideal for medical applications that need to avoid dead space and create hygienic designs. Moreover, individual components are more robust and lighter to assemble than individual parts and have the potential to eliminate the risks and costs associated with secondary assembly.
It is important that only the equipment manufacturer's engineering team work closely with the silicone component manufacturer's injection engineering experts to fully enjoy these benefits.
On the one hand, tools are fundamental to any successful injection molded part. On the other hand, the biggest "disadvantage" of injection molding may be due to the complexity of the final product. Developing tool-level steel molds, hot runners or cold runners and associated process automation equipment can be expensive and in any manufacturing process. This cost must be considered.
The high initial tool cost must not be judged solely by cost, but by the investment within the life of the tool. Since injection molding - even liquid injection molding - can produce high integrity parts in very large batches, the price of the mold can be relatively low when considered piece by piece throughout the life of the program. To ensure long-term effectiveness, cost-effective and stable production, it is also important that the tool design is correct for the first time and that all aspects of tool design, construction and the entire process must be carefully considered.
The efficiency of the mold depends on options such as cavitation, parting line geometry, gates, exhaust, surface finish and auxiliary automation. It is important to ensure that the mold is strong enough to mitigate the inter-batch variation inherent in raw silicone. It also requires seamless integration with equipment for pumping, mixing, injecting, compressing, heating and ejecting components.
In terms of processing, there are two observation points. In order to avoid shrinkage problems, the thickness of the part may be limited. Parts may also require deburring but at an additional cost. Both of these issues can be solved again through close cooperation between device designers and silicone component manufacturers. For example, if the tools and process equipment are professionally designed, the edges can be eliminated.
The ability to formulate silicones to achieve specific properties, aesthetics or therapeutic properties makes them well suited for many medical devices. Injection molding of liquid silicone components creates complex geometries and designs that are not possible with any other manufacturing method. In addition to LIM, 2C LSR technology offers countless opportunities for part design and other benefits.
However, to take full advantage of the possibilities offered by silicone injection molding, you should avoid any drawbacks. Therefore, suppliers must demonstrate a deep understanding of the details involved in manufacturing silicone rubber parts and complex medical equipment. The key to success in the best solution, extended life, hygienic design, and standard and cost-effectiveness throughout the life of the product is undoubtedly the early and close collaboration between medical device designers and silicone component manufacturers.
Yuhuan Shengjiu Mould Co , Ltd. specializes in the production and supply of high-quality Medical Mould in China. The main production and supply: syringe molds, safety needle molds, oxygen mask molds, needle-free injection nozzles, and female molds. For more information visit: https://www.medicalmould.net
2019年10月24日（木）
Syringe Mold Process Structure And Characteristics
A mold assembly and method for making a syringe container that is provided with a needle and a syringe barrel. The mold assembly includes: a first mold sleeve; a second mold sleeve movably abutting on the first mold sleeve to define a mold cavity; a core portion located in the mold cavity; and a first clamp fixed to the first mold sleeve a holding member; and a second clamping member fixed to the second mold sleeve; wherein the needle is held by the clamping member. The method includes: placing one end of the needle into the port of the core; moving each of the mold sleeves such that the clamp retains the needle when the mold sleeves abut each other; injecting the polymer material into the mold cavity; a mold sleeve; and the syringe container is removed from the core.
The production process and production mold of the syringe rubber plug belong to the field of medical device technology. The utility model solves the problems that the existing syringe rubber plug production process is complicated and the syringe rubber plug production mold structure is complicated. The syringe rubber plug production process, the rubber plug is cylindrical, and the production process comprises the following steps:
A, loading;
B, molding;
C, finished product.
The syringe rubber plug mold comprises a concave mold and a convex mold which can be engaged with each other, the concave mold has a cylindrical cavity, and an axially convex inner rod is arranged at the center of the bottom of the cylindrical cavity, and the center of the punch has an axial protrusion The plunger is inserted into the cylindrical cavity when the die and the punch are engaged, and the plunger is disposed coaxially with the inner rod. The utility model has the advantages of simple processing, easy operation, high work efficiency, effective removal of flash, convenient processing, and reasonable structural design.
Yuhuan Shengjiu Mould Co , Ltd. is one of the leaders in disposable medical equipment in the medical mold industry. Specializing in the manufacture and supply of high quality Syringe Mould and other medical molds, product details visit: https://www.medicalmould.net
The production process and production mold of the syringe rubber plug belong to the field of medical device technology. The utility model solves the problems that the existing syringe rubber plug production process is complicated and the syringe rubber plug production mold structure is complicated. The syringe rubber plug production process, the rubber plug is cylindrical, and the production process comprises the following steps:
A, loading;
B, molding;
C, finished product.
The syringe rubber plug mold comprises a concave mold and a convex mold which can be engaged with each other, the concave mold has a cylindrical cavity, and an axially convex inner rod is arranged at the center of the bottom of the cylindrical cavity, and the center of the punch has an axial protrusion The plunger is inserted into the cylindrical cavity when the die and the punch are engaged, and the plunger is disposed coaxially with the inner rod. The utility model has the advantages of simple processing, easy operation, high work efficiency, effective removal of flash, convenient processing, and reasonable structural design.
Yuhuan Shengjiu Mould Co , Ltd. is one of the leaders in disposable medical equipment in the medical mold industry. Specializing in the manufacture and supply of high quality Syringe Mould and other medical molds, product details visit: https://www.medicalmould.net
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