The application status of plastics in medical apparatus

 Medical equipment involves multiple sectors pharmaceuticals, machinery, electronics, plastics, etc., in which the rapid development of plastic medical devices. Since the 1930s, people first used synthetic polymer materials. Since celluloid film is made as an artificial kidney dialysis membrane used in clinical success. Polymer materials are gradually replacing traditional inorganic materials such as metals, glass, ceramics, phosphorus gray stone for the preparation of medical devices.

This is because:

(1) A polymer material with good mechanical properties and chemical stability, more suitable for medical use;

(2) A rich source of polymer materials, inexpensive, disposable medical supplies for made to avoid the traditional material products due to high prices. And had to repeatedly use disinfection and problems caused by secondary infections;

(3) Or more easily modified plastics have been good tissue compatibility, blood compatibility of products;

(4) Made of plastic low cost, suitable for a variety of molding methods, ease of processing into complex shapes. And the development of new medical products.

Compared with ordinary plastics, medical plastics require higher:

(1) Since most toxic monomers and oligomers, so medical plastics are strictly limited to the residual of the foregoing;

(2) Plastic in the polymerization process inevitably comes into contact with the reactor, metal catalysts. Which often contain trace metal ions, according to the medical plastics GB requirement for zinc, lead, cadmium, copper, barium, tin, and other metal ions residual cases are clearly defined;

(3) Resin requirements for medical plastics with high purity, narrow molecular weight distribution;

(4) Plastic processing or modified in the process need to add various additives. Such as the amount of plasticizer in PVC medical products often as high as 30-60%, thus requiring to maximize the use of toxic chemicals. To prevent long-term use or reduce the precipitation of additives to affect product performance and treatment;

(5) In accordance with the requirements of medical plastic, often need to make products with surface hydrophilicity, anti-radiation sterilization, and other functions.

USE OF PLASTICS IN MEDICAL INDUSTRY

 

USE OF PLASTICS IN MEDICAL INDUSTRY

Medical equipment involves multiple sectors pharmaceuticals, machinery, electronics, plastics, etc. In which the rapid development of China plastic medical devices. Plastics have been used widely to create medical tools. And devices like surgical gloves, syringes, insulin pens, IV tubes, catheters, inflatable splits, etc. Such products are created for one-time use. Help prevent the spread of dangerous diseases by eliminating the need to sterilize and re-use a device.

MEDICAL USES FOR PLASTIC MATERIALS INCLUDE:

Thin tubes called catheters are used to unblock blood vessels. The deposit obstructing the vessels can be broken down with a tiny spiral-shaped implant called vessel support. The vessel support is made of plastic developed specifically for the medical field and charged with active substances.

Plastic pill casings are made of tartaric acid-based polymers that gradually break down. Slowly releasing the required medication over the required amount of time. These tailor-made pharmaceutical delivery systems help limit the number of pills a patient must take to get the required dose.

Synthetic materials can also play an important role in repairing diseased arteries that cannot be helped via vessel support. After removing the affected section of the aorta. A flexible plastic prosthesis bridges the gap.

People with severely impaired hearing can now have plastic implants inserted that allow them to hear the sound again. The implant is made up of several components including a microphone. A transmission device that is connected to a micro-computer worn on the body. Additionally, there is a stimulator and an electrode carrier with 16 electrodes, and 16 different frequency ranges. This device transforms acoustic impulses into electrical ones bypassing the damaged cells and stimulating the auditory nerve directly.

There is also a whole array of plastic disposable medical products. Including bedpans, insulin pens, IV tubes, tube fittings, plastic cups and pitchers, eye patches, surgical and examination gloves, inflatable splints, inhalation masks, tubing for dialysis, disposable gowns, wipes and droppers, urine continence, and ostomy products. The use of plastic materials in hospitals is almost endless.

Use of Plastics in Medical Industry

THE ADVANTAGES OF INJECTION MOLDING TECHNIQUES IN MEDICAL APPLICATIONS:

(1) A polymer material with good mechanical properties, and chemical stability. More suitable for medical use.

(2) A rich source of polymer materials. Inexpensive disposable medical supplies are made to avoid traditional material products due to high prices.

They had to repeatedly use disinfection and problems caused by secondary infections.

(3) More easily modified plastics have good tissue compatibility. Flood compatibility of products.

(4) Made of plastic low cost, suitable for a variety of molding methods. Ease of processing into complex shapes. And the development of new medical products.

MEDICAL GRADE PLASTICS

The standards and limitations for the use of materials for medical applications are very stringent. The invention of various types of materials. With suitable properties and injection molding techniques. The possibilities of the use of plastic resins for medical applications have increased.

The following are the key considerations for selecting medical-grade plastic resins.

1. Strength: Depending on the type of medical equipment being considered.
2. FDA rules Are different for different medical devices (tubings, implants, surgical instruments, etc).
3. Thermal and Chemical resistance: Important aspects, considering medical sterilization needs.
4. Molding techniques: Different plastic resins can be selected depending on the molding technique being used- injection molding or insert molding.
5. Operating conditions: Includes factors like corrosion resistance, temperature, strength, flexibility, radiation exposure, etc present while the device is used.

COMPARED WITH ORDINARY PLASTICS, MEDICAL PLASTICS MOLDING PARTS REQUIRE HIGHER:

(1) Since most toxic monomers and oligomers. Medical plastics are strictly limited to the residual of the foregoing.

(2) Plastic molding in the polymerization process inevitably comes into contact with the reactor, and metal catalysts. Which often contain trace metal ions, according to the medical plastics GB. The requirement for zinc, lead, cadmium, copper, barium, and tin. Other metal ions residual cases are clearly defined.

(3) Requirements for medical plastics molding with high purity. Narrow molecular weight distribution.

(4) Chinese plastic molding processing or modified in the process need to add various additives. Such as the amount of plasticizer in PVC medical products is often as high as 30-60%. This required maximizing the use of toxic chemicals. To prevent long-term use or reduce the precipitation of additives to affect product performance and treatment.

(5) In accordance with the requirements of medical plastic. We often need to make products with surface hydrophilicity. Anti-radiation sterilization, and other functions.

What is medical injection moulding?

 

What is medical injection molding?

Injection molding is a widely used manufacturing process in the medical industry, offering numerous advantages for a variety of applications. Medical-grade plastics injection molding is used for medical devices, components, laboratory and facility equipment, and more.

When it comes to health and quality of life: with its injection moulding machines, CNMOULDING will always live up to the specific requirements of the sensitive medical industry. We offer utmost safety, cleanroom-compatible production, precision, and full documentation and traceability in the manufacturing process.

medical injection molding

medical injection molding

Medical Plastic Injection Moulding Benefits

Since medical device plastics provide increased versatility and can be combined with metal to create enhanced medical product attributes, medical-grade plastics have become the preferred material for numerous types of electronic medical devices. Some of the advantages that medical injection molding companies can provide include:

Improved ergonomics
Reduced weight
Increased functionality
Lower cost
The decreased burden of sterilization

Why Plastic Injection Molding is Important in the Medical Field

Since its inception, the use of plastics within modern medicine has steadily increased. Medical devices that are manufactured from injection molded plastic have contributed to a reduction in medical costs, infectious disease, and pain management. High-tech polymers are used within medical device prototype development and are commonly used to create improved artificial limbs and devices that reduce the risk of infection. Medical plastic injection molding directly leads to increased patient safety and the ability to save more lives.

Medical Device Plastic Injection Molding Applications

Our medical insert molding processes can create housings for medical devices including:

Medical Enclosures
Medical Knobs
Surgical instruments
Tubes
Dental instruments
Medical equipment components

Manufacturing capabilities in the medical field

• Wide range of medical materials
  Hundreds of plastic, metal, and elastomer materials such as PEEK, PEI (Ultem), PPSU, polycarbonate (PC), liquid silicone rubber (LSR), Ultem, TPEs, Radel, PSU, Delrin, Lexan, Pebax, ABS, etc.
• Machinable size
  From miniature to 2400 square centimeters (based on the processing size of our standard mold), in addition, we will also provide manufacturing services for larger size products according to customer needs
• Mold cavity tolerance
  +/-0.01mm when processing molds, increase +/-0.05mm per centimeter when calculating shrinkage
  • Consistency of parts
  Less than +/-0.1mm
• Mold type
  Customers can choose the most suitable mold core material based on the estimated sales of the product
• Optimize the supply chain
  Save resources and reduce manufacturing costs
• Machine equipment resources
  Single-color and two-color injection molding machines with different tonnages

How does CNMOULDING help the medical industry upgrade?

Quotation within 24 hours
CNMOULDING’s excellent structural engineering team and mature formwork solutions can guarantee a quotation within 24 hours

30% cost savings
Through standardized mold bases and the control of size, materials, bulk purchases, streamlined production, and machine efficiency, it can save customers 30% of manufacturing costs on average

50% shorter lead time
Save the mold base processing time, meanwhile, the mold production cycle is short, and some mold parts are standardized, which is 30% faster than the average delivery time of traditional suppliers.

For your free quote and design-for-manufacturability feedback, please upload your CAD file. We want to earn your business. If you get a lower injection molding quote, send it to us and we will try to beat it.

What are the advantages of die casting?

 

What are the advantages of die casting?

Die-casting applications in various industries

Aluminum Die-casting is a pressure-cast part, pressure Die-cast by casting machine, a heated liquid
aluminum or aluminum alloy is poured into the die casting machine feed inlet, the die-casting machine casting, casting mold limits the shape and size of aluminum parts or aluminum alloy parts, such parts usually called aluminum Die-casting. Casting is relatively early humans mastered a metal thermal processing, It is usually performed using gravity casting metal in a mold. However, aluminum die-casting is not done by gravity, but exert some pressure, A bit like “injection molding” But it has a high-tech pumping core cooling system. Overall, a centralized entrance through the material to be cast, “Note” made in the cavity formed parts. 

Since aluminum and aluminum alloy has good fluidity and plasticity, and the casting process is casting
pressure die casting machine, Die-cast aluminum and therefore can make a variety of more complex shapes
can also be made high accuracy and finish and thus greatly reduce the amount of machining and casting of
aluminum or aluminum alloy casting margin, not only saves electricity, metal materials, but also a significant
reduction in labor costs; and aluminum and aluminum alloy with excellent thermal conductivity, and a smaller
the proportion of high workability; 

The Die casting advantages:

 1, good quality: high precision casting size, surface finish, high strength and hardness, dimensional stability, good interchangeability; 

2, high efficiency: high productivity machine, small hot chamber Die casting machine aluminum Die-cast aluminum can on average every eight hours from 3000 to 7000; long life die-cast aluminum type, a pair of Die-cast aluminum type, Die-cast aluminum alloy bell, the life of up to tens of million times, or even millions of
times; easy to mechanization and automation. 

3, the economic effect of the fine: As the die-cast aluminum precise size, smooth sheet pan and so on.
Generally, no longer be machined directly use or processing volume is small, so not only improves the
utilization rate of the metal but also reduces the amount of processing equipment and labor; casting cheap
price; a combination of Die-cast aluminum with other metals or non-metallic materials may be used. Saving
assembly work and metal. 

 Therefore, aluminum die-casting is widely used in automobile manufacturing, engine production, motorcycle manufacturing, motor manufacturing, pump manufacturing, transmission machinery, precision instruments, landscaping, power construction, architectural decoration, and other industries. Aluminum die casting can be manufactured as a Die-cast aluminum auto parts, aluminum die-casting automobile engine fittings, aluminum Die-casting engine cylinder, Die-cast aluminum cylinder gasoline engine cylinder head, valve rocker aluminum Die-casting, Die-cast aluminum valve seat, aluminum die-casting power accessories, Die-cast aluminum motor cover, Die-cast aluminum housing, Die-cast aluminum pump housing, aluminum Die casting construction accessories, decorative accessories aluminum Die-casting, die-casting aluminum fence parts, aluminum Die-cast aluminum wheels and so on parts.

Troubleshooting for PC plastic molded parts

 

Focus on Polycarbonate Project success

We are very honored, for a Polycarbonate molded parts project between China and US injection mold company. We become the winner.

There is an American medical company needs 1 set of high precision injection molding part, the part we are going to mold is made in PC raw resin, also called Polycarbonate. Although the transparent plastics piece is our strength, in the actual production process, some problems. Our experts cost time and solve it finally, it should be we can learn and share.

Here’s a simple idea about the injection mold for PC medical products.

Deep Injection Molding Manufacturing Expertise

As you can see the transparent body is a hook surface.  The product surface needs to be transparent and no rod traces and dirty marks. We need to ensure that the plastic products will not stick in the side of the cavity during the injection molding process. So it is necessary to use a slider block structure. Because the customer needs all the wall thickness must be uniform, then the light reflection is the same. Look at the pictures and videos can know, for an elliptic shape, the problem is difficult to solve.

 

Another problem is the bubble inside, the product safety reason, customer have to design and make the wall thickness reaches 5 MM, PC accessories will have some bubbles, from the picture you are hard to find, but the actual existence, made a bubble in the PC material parts get cooling and sealing the door quickly,  there are some defects on the surface is easy to produce because of big thickness, to do the right thing, there are a few things you might want to check if the resin completely drying, a suitable mold temperature, injection speed, using multi-point hot runner feeding, etc. here is the final approved sample to see the clean off, there is no bubble at all!

 

“INCREASE YOUR COMPANY PROFIT WITHOUT SACRIFICING QUALITY “

Trusty Tooling & Mold Making, China Supplier– CNMOULDING.COM

Mold making in China is generally much more affordable than in the West .Cnmoulding.com will devise the appropriate tool and mold-making strategy for you.

China plastic injection molding and injection moulds will save your company 50% to 70% of the cost of U.S. Manufactured molds and we will produce them in half the time it takes to produce the same mold in the U.S.

Manufacture your injection molded products and injection molding with us in China. Send us your 3D solid model CAD drawings or sample or even only your idea. And we will provide you with the absolute lowest price for injection molds as well as your injection molded products with quality standards meeting or exceeding your expectations.

New energy vehicles put forward new requirements for plastics

 

New energy vehicles put forward new requirements for plastics

With the rapid development of the automotive industry, especially the rapid development of new energy vehicles (including hybrid, pure electric, and hydrogen energy). In recent years, the automotive industry has had a demand for lightweight, integrated, miniaturized, and electrified auto parts Also increasing day by day.

Plastic is an indispensable material in the automotive field, and its process and performance requirements are increasingly becoming everyone’s attention. At the same time, higher requirements are also placed on the R&D capabilities and rapid response capabilities of material suppliers.

Miniaturization of turbocharged engines requires high-temperature resistance of plastic materials

The latest development trend of internal combustion engines is miniaturization and intake supercharging (that is, turbocharged high). The huge benefits brought by these two technologies are a significant reduction in fuel consumption. An increase in engine power, and a reduction in overall engine mass. For example, The two-piece structure design of the previous engine intake manifold has been changed to an intake manifold with an integrated intercooler.

This design puts forward higher requirements for the high-temperature resistance and high strength of the material. It needs to withstand high temperatures of 190°C and 230°C for a long time and has excellent strength.

Electrification requires low precipitation and neutrality of plastic materials

As more sensors have been placed in various positions of the vehicle. The integration of electrification continues to improve, and the requirements for materials of this electrified equipment are more stringent than before. Such as low precipitation (not to block the oil circuit of the capillary structure), Electrically neutral (not to cause a short circuit in the circuit), and materials need to meet the requirements of relevant laws and regulations (not to contain prohibited substances), etc.

Polyamide (nylon) materials are widely used in the automotive industry for their excellent mechanical strength and long-term heat resistance. Its heat resistance is related to the heat stabilizer. Common heat-resistant stabilizers include metal salts (such as copper iodide/copper halide, metal stearate, etc.) and aromatic amines (such as aniline substances, etc.). With the increasing awareness of environmental protection, some of these heat-resistant stabilizers have been banned by relevant regulations due to their side effects. For example, the latest EU regulations strictly control N, N’-diphenyl-p-phenylenediamine (DPPD) substances.

New energy vehicle requirements for flame retardant properties of plastic materials

With the rapid development of new energy vehicles (including hybrid, pure electric, and hydrogen energy), related standards for parts and materials in this field are also rapidly refined. For example, requirements for different flame retardant systems, flame retardant systems Cover roughly 5 types, namely. Halogen flame retardant, nitrogen flame retardant, inorganic flame retardant, phosphorus flame retardant. And nitrogen-phosphorus synergistic flame retardant. Among them, the flame retardant mechanism is divided into gas phase flame retardant and corrosive” Carbonized” flame retardant. Such as red phosphorus, inorganic flame retardant, etc.

Different flame-retardant systems have different flame-retardant effects. At the same time have obvious changes in the physical properties of the material (such as density, rigidity, and toughness). So how choosing a flame-retardant system to match the flame-retardant effect and mechanical strength requirements of the components is a very complicated problem that must be solved.

New energy vehicle requirements for thermal aging stability of materials

In the high-voltage parts of new energy vehicles. According to regulatory requirements, bright orange materials are required to mark the relevant parts as high-voltage areas. The components in the high-voltage area tend to continue to heat up after the current is connected. Therefore, most vehicle manufacturers also put forward related thermal aging stability requirements for orange materials. For example, after 90℃+1000h thermal aging, the color change of RAL2003 shall not exceed Darker oranges such as RAL2008 and RAL2009.

In the future automotive industry, lightweight and weight reduction, electrification, high transmission efficiency, and miniaturization of turbocharged engines will surely become a whole. And become the indicators for the development and verification of most highly integrated auto parts. . Material manufacturers also need to actively respond to the market and improve material performance to meet the new requirements of the automotive industry.

Overview of China Auto Mould

 

Overview of China Auto Mould

China Auto Mould[/caption]

 

The rapid development of China's automobile industry has brought a broad development space for domestic automobile molds. In addition, due to cost and market factors. The focus of mold manufacturing in developed countries has gradually shifted to developing countries represented by China. Comprehensive factors at home and abroad have promoted the rapid development of the domestic automotive mold industry. And many emerging automotive mold companies have emerged. According to statistics, injection molds account for about 37%. China has become a veritable automobile mold manufacturing country.

 

China’s automotive mold production capacity is extremely advantageous in the world. However, due to the slow technological improvement of domestic high-end automotive mold companies, technical innovation capabilities. And insufficient capabilities in R&D and application of new mold technologies. The development capabilities of domestic high-end molds are not yet complete. To meet the supporting needs of the domestic automobile industry. A large part of high-end automobile molds still needs to be imported. Therefore, the domestic automobile mold industry needs to make up for this shortcoming as soon as possible to make up for a major shortcoming of my country's automobile mold industry.

 

As China's top ten industries for revitalization

China Auto Mould

China's automobile industry has been supported by national policies, coupled with the promotion of autos to the countryside. And China's major auto companies have increased their production, reaching 40 million vehicles in 2020, maintaining the world's first position in production and sales. It is understood that about 1,500 molds are needed to manufacture an ordinary car, among which are close to 1,000 stamping molds and more than 500 interior trim injection molds. Affected by the rapid development of China's auto industry. China's auto mold industry has shown rapid growth and its market capacity has continued to expand.

 

With the gradual increase of China's automobile production year by year. Domestic and foreign automobile mold companies have shown their talents in the Chinese automobile market. Meeting the hot domestic demand and export demand to a certain extent. And at the same time. It has created a new generation in my country's automobile mold industry. Good opportunity. It can be seen that the prospects of China's automobile mold industry are very broad.

 

Scientific management and informatization are the development direction of mold enterprises

 

Another important aspect of the development of automobile mold technology is scientific and information management. Scientific management has enabled mold companies to continue to develop in the direction of Just-in-Time Manufacturing and Lean Production. Enterprise management is more precise, production efficiency is greatly improved, and ineffective institutions, links, and personnel are continuously streamlined. With the progress of modern management techniques. Many advanced information management tools, including enterprise resource management systems (ERP), customer relationship management (CRM), supply chain management (SCM), project management (PM), etc., are used in mold companies It is widely used.

 

Refined manufacturing of molds is an inevitable trend

 

The so-called refined manufacturing of molds refers to the development process and manufacturing results of molds. It is specifically manifested in the rationalization of the stamping process and mold structure design. High precision of mold processing, high reliability of mold products, and strict technical management. Sex. Refined mold manufacturing is actually not a single technology, the second is a comprehensive reflection of design, processing, and management technology. The realization of refined mold manufacturing not only depends on technical excellence but also on strict management.

 

China is the world's largest country in automobile production and sales. The number of automobiles is also expected to be the largest in the world, but it has never been able to produce its own high-end cars. This has a lot to do with the lagging development of the automobile mold industry. Which is known as the "mother of the automobile industry". Auto mold refers to the mold used in the automotive field, known as the "mother of the automobile industry". More than 90% of the parts in automobile production need to be formed by molds, and automobile body molds, extensive huge and medium-sized panel molds. Are used for body manufacturing. An important part of technology is also a key link in the formation of autonomous vehicle development capabilities.

Automobile mold products include automobile cover molds, tire molds, interior, and exterior plastic parts molds, automobile lamp molds, automobile bumper molds, automobile dashboard molds, etc.