Nowadays, injection molding has become the most common method of manufacturing plastic parts, it is ideal for mass production.
Many things can be made by injection molding, such as buckle, packaging, bottle caps, automotive parts and components, toys, mechanical parts (including gears), components of medical products, one-piece chairs and small tables, storage containers, etc.
In order to facilitate the molding process, engineers must be very carefully to consider all molding conditions, below elements must be taken into account while designing:
1. The material that injected
2. The material of the mold
3. The desired shape and features of the part
4. The properties of the molding machine
How:
Heat the plastic material until it becomes fluid, deliver the molten material with plunger or screw to injection nozzle at the same time, and then inject the material into mold cavities, after the molded plastic article cooling down and curing, eject it out with ejector pin.
Advantages:
1. Can be used to manufacture plastic parts in complicated shape or different material
2. Suitable to be used for mass production because of the efficiency
3. Fine dimensional stability
4. Can be fully automatic
5. With less material wasted
Disadvantages:
1. Unavoidable results including parting line, ejector pin marks, or gate marks are usually present on the finish products
2. The cost of mold and equipment is high
3. The overall structure of the mold is complicated, thus it's not easy to do further processing
Notices:
The quality of the mold is one of the important parts during production, in order to have nice performance and benefit from the production, it is necessary to select suitable die steel.
Ideal die steel should have below features:
1. Easy to polished
2. Corrosion resistance
3. Crack resistance
4. Transcalent
5. Abrasion resistance
Some beginner to the world of buckles may be not sure about how to measure the size of buckle and may ask “Which buckle size should I use?”, this question is what we are frequently asked by our customers.
Please note: the size of buckles are not determined by their exterior dimension, they are measured by interior dimension, i.e. side release buckles, tension locks, and slide buckles are measured by the inner widths, when it comes to cord stopper or horn toggle button, we have to check out the cord diameter and find out cord lock with suitable hole diameter.
Common Sizes:
The most common sizes of the derlrin buckles that frequently be used in our daily life including 8 mm, 10 mm, 1/2”, 5/8”, 3/4”, 1”, 1-1/4”, 1-1/2”, 1-3/4”, and 2 inch, please take references of below :
However, inner width is not the only key element when we are selecting the buckles, if the webbing is thicker, then we have to use slide buckles with larger inner length, i.e.Hope that above guide could help you find out the appropriate size of buckle, if you have any further question, please feel free to let us know.
For any product information, please contact us with below information:
888@22889999.com
PVC (Polyvinyl Chloride) as a material used for luggage and bag components are as follows:
Durability: PVC is a highly durable material, with excellent resistance to wear and tear. It can withstand repeated use and handling without significant damage or degradation.
Water resistance: PVC is inherently water-resistant, making it suitable for bag applications where protection from moisture and water is important. It helps to keep the contents of the bag dry and protected.
Easy maintenance: PVC is relatively easy to clean and maintain. It can be wiped clean with a damp cloth or mild detergent, making it ideal for bag components that are exposed to dirt and stains.
Flexibility: PVC is a flexible material, which allows it to be easily molded and shaped into various bag components such as handles, straps, and trim. It can also be heat-sealed or welded to create strong and secure seams.
Versatility: PVC can be manufactured in different colors, textures, and finishes, providing versatility in design options for bag components. It can mimic the appearance of leather or other materials, offering aesthetic possibilities for different bag styles.
Cost-effective: PVC is generally a more cost-effective material compared to genuine leather or other high-end alternatives. It provides a more affordable option for bag components without compromising on durability and performance.
Weight: PVC is typically lighter in weight compared to certain materials like metal or thick leather. This can contribute to the overall weight reduction of bags and make them more comfortable to carry.
It's worth noting that the specific characteristics of PVC can vary depending on the quality of the material and the manufacturing processes used. Also, environmental considerations should be taken into account since PVC is a type of plastic and has implications for recycling and sustainability.
1.High chemical resistance: PP exhibits excellent resistance to a wide range of chemicals, including acids, alkalis, and solvents. This makes it suitable for applications involving contact with various chemical substances.
2. Low density: PP is a lightweight material with a low density, which makes it ideal for applications where weight reduction is desired. It offers a high strength-to-weight ratio. Such use for the school bag trolley plastic part.
3.Good heat resistance: PP has a relatively high melting point, allowing it to withstand elevated temperatures without significa nt deformation. It has a heat resistance of around 130-170 C (266-338 F), depending on the grade. Such use for Bag bottom , PP bag Bottom.
4. Excellent moisture resistance: PP is highly resistant to moisture absorption, making it suitable for applications in humid or wet environments. It does not absorb water easily, which helps maintain its mechanical properties.
5.High impact resistance: PP exhibits excellent toughness and impact resistance, making it suitable for applications where parts need to withstand sudden impacts or loads.
6. Low cost: PP is relatively inexpensive compared to other engineering plastics, making it a cost-effective choice for many applications.
High mechanical strength: POM exhibits excellent toughness and resilience, allowing it to withstand significant loads and impact without deformations or fractures.
Low friction coefficient: POM has a low coefficient of friction, making it suitable for applications where smooth and low-wear surfaces are required.
Excellent dimensional stability: POM has low water absorption and minimal sensitivity to temperature and humidity changes, ensuring good dimensional stability and consistent performance over time.
Good chemical resistance: POM is resistant to a wide range of chemicals, including solvents, fuels, and detergents, making it suitable for applications in various environments.
Low creep and fatigue resistance: POM has a high resistance to creep, which is the tendency to deform under prolonged loads, and it also exhibits good fatigue resistance, making it suitable for long-term use.
Effective electrical insulation: POM has excellent electrical insulation properties, making it suitable for electrical and electronic applications.
Meifeng use brand Pom widely use for Quick Side Release Buckles, Adjustable Buckles , Bag accessories, etc.
1.Are you a factory or trading company?
Our company is a factory established in 1990, we focus on plastic accessories for bags. We have varies of products, such as Plastic side release buckles, adjustable buckles, plastic handles,wheels and trolleys etc. We could offer you very low factory price and we could also do FOB price for you.
2. Can I get some free sample?
If we have stock, we’d like to send you for free, you only have to pay for the freight fee or kindly provide us the courier account for sample sending. We also offer OEM service (mold cost exclude) which you could design your own products, we have strong R&D team with over 30 years’ experience.
3. How long can I get the sample from you?
For stock samples, we can send out right away, for special request samples, it takes 3-5days for production.
4. What kind of payment term do you accept?
T/T 30% as deposit is required, 70% balance to be paid before shipment. If it is a small payment we suggest to pay full in advance to save both bank cost.
5. How long does it take for bulk order?
Usually it takes 7-10 days depends on your quantity.
6.How can I trust your quality?
(1)our factory established in 1990, which is over 30 years.
(2)we use brand material
(3)strong R&D team and mold team
(4)Fully-own factory with 15,000 meters area
(5)quality control system
(6)testing machines for quality check.
5. Can you accept OEM or ODM?
Yes, of course.
Any questions,pls kindly e-mail us,thanks!
Plastic buckles are often used as fasteners for backpack straps, allowing for easy adjustment and secure closure.
And they have many sizes, such as below and also see the attached pictures:
Plastic buckle width 3/4inch, fit the 3/4-inch wide strap Webbing 3/4inch =20mm
Plastic buckle width 1 inch, fit the 1-inch wide strap Webbing 1 inch =25mm
Plastic buckle width 1.2 inch, fit the 1.2-inch wide strap Webbing 1.2 inch =32mm
Plastic buckle width 1.5 inch, fit the 1.5-inch wide strap Webbing 1.5inch =38mm or40mm
Plastic buckle width 2 inch, fit the 2-inch wide strap Webbing 2inch =51mm
