With the spread of Covid-19, wearing FFP2 face mask has become the “new normal.” It has become mandatory for everyone to cover their face whenever moving out in public.
During the pandemic time, we have been introduced to many types of face masks. Now the question is which one is most effective against Covid-19? Today, we will find the answer to that.
Types of Face Masks
There are different types of face masks available for Covid-19 protection. Here are the details you should know.
- FFP Masks
Filtering Face Piece masks or FFP masks are half masks. They are very effective against Covid-19 as they are designed to prevent the entry of the virus into the human body. It does not protect the wearer, but also the people around.
FFP masks can be of FFP2 or FFP3 types. An FFP2 mask manufacturer makes both types of FFP masks. These masks are different from surgical or cloth masks that you wear. An FFP mask is leak-proof and fits tightly and close to your face.
- Cloth Masks
This type of mask is meant for everyday use. They are made of a variety of fabrics such as a bandana, cloth pieces, etc. To make these masks more effective, you should use a combination of fabrics.
A cloth mask can trap the droplets when you sneeze or cough. They are effective in slowing down the spreading of the virus. The good thing about these masks is that they are reusable. You can wash them after coming back home and use them again. However, you shouldn’t touch your face when wearing these masks.
- N95 Masks
This is the most popular type of Covid-19 mask available. It provides a higher degree of protection than a cloth or surgical mask. These masks are effective because they can filter both large and small particles.
It is called N95 because it can block about 95% of liquids and particles from entering your system. However, these masks are meant for healthcare workers only.
- Surgical Masks
Lastly, we have surgical masks which are disposable face masks. This means you cannot use them more than once. Also, they have a loose fit. These masks are designed to protect you from splashes or sprays that could enter your mouth or nose.
However, you should know that a surgical mask is only good for filtering large particles. They are not effective against smaller particles.
The most effective face mask for Covid-19 is FFP masks. Make sure you look for a reputable FFP2 mask manufacturer when buying an FFP2 mask.
Plastics are fundamental mixes in our everyday life. PC frill, plastic injection molding toys, kitchen utensils, and numerous other family unit things which we utilize each day have experienced the trim procedures. The trim procedure isn’t hard to comprehend. In basic terms, it includes moving fluid plastic into shape at that point enabling it to cool and frame the necessary item.
For example, plastic resin can be utilized to make injection molding toys. At the point when this is done, liquid fluid plastic is embedded in a form that is molded like a toy and afterward permitted to cool. A similar procedure can be utilized to make different sorts of shaped items, for example, promoting things and signage.
Being an exceptionally specialized procedure, plastic trim ought to be finished by a solid producer. While picking somebody to plan your plastic shaped items, here are a few variables to consider.
Kinds of trim procedures utilized
There are a few kinds of trim procedures utilized when working with plastic items. Infusion shaping is among the most widely recognized procedures and it is ordinarily utilized in large scale manufacturing of plastic things like cell phone extras and toys. Pressure forming is another mainstream procedure for creating shaped items. Dissimilar to infusion forming, it utilizes vertical presses. There’s likewise rotational embellishment and basic froth forming which have gotten famous throughout the years.
Area
The area of your custom maker is significant on the grounds that it will assist you with saving on plenty of expenses. Much of the time, you should move the formed parts to the get-together and bundling to be finished. On the off chance that you pick a maker who is arranged outside your limits, you’ll need to pay a lot of transportation costs. There is additionally the burden and lead time increment of picking a producer who isn’t promptly accessible in your general vicinity. Having your formed parts made near your industry can truly diminish cost and time.
Think about how much time it takes to get the formed items
Various organizations will show differing pivot time and you have to consider this data while picking your maker. The additional time it will take for the formed parts to be prepared the more cost and time it takes to get the last item. In the event that you will depend on the formed items to make your last item then it is significant that you pick a maker who can convey inside the necessary courses of events.
Approach them to give you courses of events for the various procedures engaged with embellishment including structure, prototyping, changes, and creation. For the shaped parts to be finished on schedule, the structure ought to be finished inside the stipulated period with the goal that models can be made and any necessary changes are done before the items are sent to the client.
What alternatives to transportation and conveyance do they offer?
You have to decide the sort of delivery and convey choices offered by the maker for the shaped plastic parts or injection molding toys. When they are prepared, you need to guarantee that they get to you at the earliest opportunity in order to proceed with creation. Dependable trim organizations will have set up an assortment of delivery choices so you can pick the one that is generally perfect for your item. Some of them have an armada of trucks that offer conveyance to clients inside their territory. In the event that you can locate a custom producer of shaped parts who offers fabricating together with gathering, bundling and dispatching then you’ll have the option to eliminate expenses and increment lead time. Take as much time as is needed when looking for an appropriate producer and pose every one of the inquiries with respect to their administrations before you join.
Being an exceptionally specialized procedure, plastic trim ought to be finished by a dependable maker.
Alloy Die Casting Description:
Aluminum Alloy Die Casting A380 is the most common of the aluminum die casting alloys. It offers the best combination of casting and product properties. It is used for a wide variety of products such as garden equipment, chassis for electronic equipment, engine brackets, housings for automotive alternators, starters and water pumps, home appliances, furniture, office equipment hand tools, and power tools. Alloys 383 and 384 are alternatives to 380 that are specified when very intricate components require improved die filling characteristics and improved resistance to hot cracking. Alloy 360 offers high corrosion resistance and superior strength at elevated temperatures than 380. Other properties are essentially equivalent. Alloy 413 offers the best die fill characteristics making it excellent for pressure tightness applications. it is the choice for products such as hydraulic cylinders and pressure vessels. Its casting characteristics make it useful for very intricate components.
Alloy 390 was developed for automotive engine blocks. Resistance to wear is excellent, but ductility is the lowest of the die casting alloys, with elongation less than 1%. Special surface treatment systems allow engine pistons to run directly on the alloy surface, eliminating the need for ferrous alloy liners. It can also be used for valve bodies and bearing surfaces subject to abrasion and wear.
Alloy 518 is used in escalator components, conveyor components, and marine and aircraft applications It offers good ductility and very good corrosion resistance. It can be polished and anodized for a decorative finish. Zinc Alloy Die Casting Zinc alloys are versatile, cost-effective materials which can be used in a diverse range of die casting applications. As precisely formulated metal alloys, they offer the mechanical properties of medium strength metals. Advantages of Zinc Alloy Die Casting Overall, zinc alloys have significant advantages as casting materials for small components, with excellent physical and mechanical properties, castability and finishing characteristics. Hot chamber die-cast zinc alloys can be cast to tight tolerances, complex detail, net shape, and the alloy¡¯s dimensional stability ensure part-to-part consistency over long production runs. Net shape manufacturing is one of the main advantages of hot chamber die-cast zinc alloys.
Zinc alloy die casting 
Zinc die casting part 
Zinc die casting parts
The most commonly used zinc alloys are ZAMAK™ 2, ZAMAK™ 3, ZAMAK™ 5, Acuzinc. These alloy families offer higher tensile strengths than most aluminum and magnesium alloys, higher yield strengths, greater impact resistance, higher Brinell hardness, and better ductility. ¡¡è Zinc alloys facilitate higher die casting cycle speeds versus aluminum and other metal alloys, more complex shapes, thinner sections, smoother surface finishes, surface finishes, and higher standards of dimensional accuracy. Compared to plastic, zinc alloys are several times stronger and many times more rigid. Their mechanical properties compare favorably with powdered iron, brass, and screw-machined steel. Zinc has inherent EMI/RFI shielding properties.
CNMCast uses only high-grade zinc alloys certified for purity. Although these materials are completely recyclable, scrap is never re-melted or re-used within our process. Zamak 3 die casting is the standard for the Zamak series of zinc alloys; all other zinc alloys are compared to this. Zamak 3 has the base composition for the Zamak alloys (96% zinc, 4% aluminum). It has excellent castability and long term dimensional stability. More than 70% of all North American zinc die castings are made from Zamak 3. ZAMAK #5 offers high tensile strength, hardness, and creep resistance than zamak# 3, and somewhat lower ductility.
It is preferred whenever these properties are required. Some die casters use only zamak# 5, which is usually an acceptable alternative to zamak# 3. ZAMAK #7 is essentially a high purity form of zamak# 3 with slightly higher ductility and lower hardness. The other mechanical properties are identical to zamak# 3.
The alloy also exhibits higher fluidity than zamak# 3 or3 5, which theoretically allows slightly thinner walls. Zamak# 7 may be specified when high ductility is required. ZA-8 is rapidly growing in popularity for pressure die casting.
ZA-8 can be cast in hot chamber die casting machines for fast cycle rates, It has improved strength, hardness and creeps properties over the ZAMAK alloys with the exception of a No. 2 alloy which is very similar in performance. ZA-8 is readily plated and finished using standard procedures for ZAMAK. When the performance of Zamak No. 3 or No. 5 is in question, ZA-8 is often the die casting choice because of high strength and creep properties and efficient hot chamber castability.
ZA-12 is also a good pressure die casting alloy, using the cold chamber process, which provides a sounder structure than ZA-27, as well as higher die-cast elongation and impact properties. For these reasons, die-cast ZA-12 often competes with ZA-27 for strength application. An excellent bearing alloy, ZA-12 is also platable, although plating adhesion is reduced compared to the ZAMAK alloys. ZA-27 is the high strength performer of the zinc alloys and is die-cast using the cold chamber process.
It is also the lightest alloy and offers excellent bearing and wear resistance properties. ZA-27, however, requires care during melting and casting to assure sound internal structure, particularly for heavy wall sections. It may also need stabilization heat treatment when tight dimensional tolerances are required. ZA-27 is not recommended for plating. However, when brute strength or wear-resistant properties are needed, ZA-27 has demonstrated extraordinary performance.
What is die casting?
Die casting is a casting liquid die forging method. Die casting die forging process is a kind of special casting forging machine to accomplish the process. Its basic technological process is: first metal liquid in low or high-speed casting filling into the mold cavity, die with a moveable type cavity surface, it with the liquid metal cooling process pressure forging blank, both the elimination of shrinkage defects, also make the rough internal Aluminum Die Casting organization to forge the broken crystal. Rough comprehensive mechanical properties are improved significantly.
Aluminum die casting is a method of using high pressure forced the molten metal into complex shapes of hydraulic die within a precision casting method. In 1964, Japan Die Casting Association for die casting is defined as” in the high temperature melting alloy pressing precision molds, in a short time a large number of production of high precision and excellent casting surface”.
The United States said casting for Aluminum die Casting, the UK Pressure Die Casting is called die casting, and the most common domestic industry are familiar with is the Japanese version, called die casting. Through the method of die casting produced in the casting, is called die casting ( Die-castings ).
This material tensile strength, compared to ordinary casting alloy high nearly doubled, for aluminum alloy automobile wheels, frame and hope to use more high strength and impact resistant material production parts, have more positive significance.
Acetals: Delrin® – Celcon®
Acetals are available as a homopolymer (Delrin by Du Pont) or a co-polymer (Celcon by Celanese). Both materials offer excellent machining properties and are ideal for holding close tolerances. The high compression strength and stiffness of acetal make it a good material for high-load applications. Acetal is also available with additives such as moly dry lubricants and Teflon® fibers. These reduce friction and aid machinability.
Nylons
Nylon is available in several compounds and co-polymers. The most commonly used nylons for industrial components are Type 6 (cast) and Type 6/6 (extruded). Both materials exhibit excellent wear resistance and tensile strength, with Type 6 offering slightly better mechanical properties. Nylon generally absorbs more moisture than other bearing materials and therefore may be dimensionally unstable in wet applications requiring close tolerances. Nylon is available in oil or molybdenum disulphide filled compounds which offer a lower coefficient of friction for bearings and wear parts.
PTFE: Teflon®
Polytetrafluoroethylene (PTFE) provides exceptional chemical, electrical, mechanical and thermal properties for many applications. The most recognized source of PTFE resin is Teflon manufactured by Du Pont. PTFE is capable of operating at temperatures up to 550ºF, making it a versatile high-temperature material. Glass fibers are often added to improve the dimensional stability of PTFE under load.
UHMW-PE: Duro-Glide®
UItra-high molecular weight polyethylene (UHMW-PE) has the highest impact and abrasion resistance of any thermoplastic. These properties and its reasonable cost make UHMW a versatile material for many applications where abrasion, impact, or chemical resistance is desired. The low coefficient of friction and high-slip properties of UHMW make it ideal as a wear liner for handling bulk commodities. UHMW can operate successfully at temperatures as low as – 375ºF, making it excellent for cryogenic applications.
Duro Lube
Oil-filled UHMW polyethylene is ideally suited for applications such as wear strips, slider plates and some bearing surfaces where lubrication is desirable to lower the coefficient of friction. All additives in Duro-Glide (white) and Duro-Lube meet FDA requirements for direct food contact.
From a humble effort to localize Bicycle Chains and Hubs in early 60’s to Worlds Largest Producer and now to a leading Supplier of Aluminium Die Casting, Machined and Painted Assemblies, the journey so far has been full of growth and full of passion for excellence.
Today we are one of the leading partners in Aluminium Die Casting, Machined and Painted Assemblies to Hero Honda, the Largest Manufacturer of Two Wheels in the World. Besides being Customer Centric, a company has to keep Innovating, Facilitating Change, adopting World – Class Manufacturing and Management Practices. We at GC Precision Mould, are always striving and challenging conventions to exceed our customer’s expectations in terms of quality, cost, development, and delivery.
GC Precision Mould has witnessed a very sharp growth in volume and revenue in the last 5 years. Our biggest strength to achieve this rapid growth has been a unique work culture always willing to learn and proactively contribute towards the common goal of achieving excellence and high level of customer satisfaction.
GC Precision Mould is one of the largest suppliers of Drive Chains and Timing Chain to World’s largest two-wheeler company Hero Honda. GC Precision Mold produces chains as per International standards like 420, 428.
Project Management
With a team of designers with over two decades of experience in designing, GC Precision Mold combines together the latest technologies/platforms and rich experience. Once the tool design is complete, the design data is converted into machining data using software and this data is transferred directly to High Speed and High Precision Machining Centers.
We can produce tools up to a weight of 5 tons. Maximum tool that can be produced in-house can go up to a dimension of 850 X 850 X 950 mm.
GC Precision Mold also designs complex machining fixtures for CNC Machining of components.
Producing critical safety components and assemblies for instance braking systems is not easy. To ensure compliance with customers requirement, each and every employee is aware of its responsibility and is committed to individually towards achieving our goal of zero defects.
Total employee involvement in delivering the highest quality products is achieved by encouraging employees to participate in Quality Circles, Kaizen Activities and Suggestion Schemes. We even reward all the employees participating in such activities to motivate them.
A manufacturing process that takes care of monitoring, measuring and analysis of all the processes responsible for the quality of the product including capability studies help our customers reduce the need of part inspection at their lines. FMEAs are live documents and are continuously improved.
Aluminium High-Pressure Die Casting
With 9 years of experience in High Pressure Die Casting, GC Precision Mould has developed in-house expertise in this field. Not only we have developed systems for handling multiple alloys, but have mastered the art of large scale mass production. We produce over 30,000 die-cast components/day from our machines ranging from 150T to 800T locking force capacity. The HPDC machines are fully automatic with real-time controls to ensure uniform quality.
Customer’s quality requirements are continuously increasing. Pressure-tight castings free from pores is the order of the day. GC Precision Mould has the experience and expertise in such castings.
Our expertise in processes, ability to offer creative solutions, always meeting the timeline and offering the entire range of services have made us what we are today.
Gravity Die Casting Machine
With technological know-how from the second largest 2 wheeler alloy wheel maker in the World, GC Precision Mould is staring the production of 2 wheeler allow wheels from April 2008 in its greenfield project in Haridwar GC Precision Mould is staring the production of 2 wheeler allow wheels from April 2008 in its greenfield project in Haridwar” to “With technological knowhow from the World’s second-largest alloy wheel manufacturer, GC Precision Mould produces Alloy Wheels for 2 wheelers.
Gravity Die Casting
The key to customer delight is timely execution of projects and project management plays the most important goal in delivering the right product, at the right time and at the right location.
The Cross-Functional Team takes care of the complete Process of Project Management right from defining the project goal and targets, until the final PSW Submission. Close interaction is maintained with the customer throughout the development process.
Process Development is the key to ensure timely identification and deployment of all the necessary resources not only in terms of machines but also inspection facilities, trained manpower, utilities, etc, to ensure smooth development, trial, inspection and submission of PPAP lots as per defined timelines.
The use of advanced simulation and testing software give GC Precision Mould the advantage of testing all the tool designed for cast fill, gate design, overflow design by doing mould fill simulations and thermal analysis of the designs at actual production parameters. This not only avoids the number of tool corrections required but also ensure good castability as optimum machine parameters are already known.
A major advantage of rotamoulding is the low tooling cost compare to plastic injection mold, and die casting, is you are looking for China Plastic Mold Company, you can contact us.
Since the heating and fusing of resin inside a slowly rotating closed mould does not require high pressure, moulds, therefore, need not be as costly or complex as those tooled for other processes. Depending on requirements, moulds can be made from several materials:
Cast aluminium alloy: the popular choice, with good heat transfer and excellent mould definition. It is best for small to medium sized mouldings.
Sheet mild steel: for fabricating moulds for large mouldings.
Cast beryllium copper: for quality moulds producing very detailed surface finishes.
Electroformed copper nickel: suitable for undercuts and the highest surface reproduction and finish.
90% of rotational mouldings are made of polyethylene (PE), a polymer with immense versatility ranging from food grade to vandal-resistant and flame retardant grades for handling waste materials, fuels and corrosive substances.
Cross-linkable PE has been developed with superior resistance to chemicals and environmental stress cracking suitable for the production of canoes, chemical plant and high performance containers.
In addition to polyvinyl chloride, EVA, polyester elastomers and certain rubbers for moulding flexible and inflatable products, engineering polymers have also been developed including polypropylene, nylon, polycarbonate, and polyurethane.
Some thermosets have been introduced too. However, the flow characteristics of the resin are all important for successful processing, hence the ubiquity of polyethylene. if plastic molding parts made in polyethylene, it is PP injection molding, need this service? Contact us.
These materials and technological advances, combined with well designed surface finishes and graphics, are leading to the rotamoulding process away from traditional solutions into new areas of product application.
We are a plastic mold company, provide plastic molds and moding service.
the last year, An important customer came to ST Tooling from US, CA, requiring a new servcie palstic mold and plastic molding company.Driver’s Side Airbag Cover in critically short time. Initial parts from productive materials were required in only 4 weeks. Several rapid tooling processes were considered for this project. The PolySteel™ process was selected for the following reason:
- Tool accuracy
- Lowest cost
- Fastest timing
- Robust process
PolySteel™ is a new polymeric tooling process developed by ST Tooling of Fresno, CA. Tools are created directly from rapid prototype or other patterns. The material is highly loaded with steel (greater than 90% by weight). A very high degree of accuracy is maintained from the pattern due to negligible process shrinkage (.0002 in./in.). The resulting tools have exceptional strength and durability for injection molding applications.
This major Original Equipment Manufacturer (OEM) had confidence the PolySteel™ process would work for this Airbag Cover project since PolySteel™ had already been proven successful with more abrasive materials requiring higher molding temperatures and pressures (such as ABS and Nylon 40% glass filled).
The 12.5″ x 12.5″ x 6 Airbag Cover mold (317mm x 152mm) would normally require 8 separate components, 4 of which are slides. Due to the versatile nature of the PolySteel™ process the tool was produced with a 1-piece stripper plate, 2 core sections and 1 cavity, completely eliminating the need for slides, thus reducing total components by 50%.
The part used to create the Airbag Cover mold was a stereolithography (SL) pattern. Since time was of the essence, the OEM’s in-house service bureau built the pattern over a weekend. Leather grain texture was applied to the exposed surface of the pattern using a special 2-day process. This greatly reduced the typical lead time required for conventional graining procedures. The PolySteel™ material was molded directly over the pattern without the need for machined inserts. The tool was constructed in a simple welded frame, which replaced the conventional mold base. Holes for the ejection system were molded in place. The characteristics of PolySteel™ made it possible to meet the demanding requirements of the Airbag Cover mold without the need for water cooling lines. Since the PolySteel™ process replicated the grain on the pattern, the parts produced from production intent materials were able to be used for show as well as deployment testing.
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More than 100 Airbags Covers were molded in the PolySteel™ tool to meet initial requirements. Over the following month, the mold was used for parametric studies by revising the tear seam and changing the emblem embossment area. Modifications of this nature are accomplished quickly and easily in PolySteel™ tools. An additional 225 parts were then produced from three (3) alternate productive materials.
Even with the premium paid for expedited delivery, the PolySteel™ tooling process still saved the OEM 12% in tool costs and even more significantly 80% in typical timing. This tooling technology played a key role enabling delivery of a new Driver’s Side Airbag Cover in a timely manner for a very important customer.
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