Plastic-injection-mould-in-umbrella

In addition, our company has established cooperative relationships with plastic raw material suppliers, printing manufacturers, etc. to ensure the supply of raw materials and printing quality.  Through our rich experience and perfect supply chain, our company can provide customers with high-quality customized plastic-injection-mould-in-umbrella products to meet their specific needs.  At the same time, we have 10 years of professional foreign trade service experience, understand the foreign trade process, and better serve our customers.  For plastic-injection-mould-in-umbrella products, we can make corresponding plastic parts, which is mainly done through injection molds.

The injection molding process for umbrella plastic parts is a typical process for multi-component, highly functional, and weather-resistant products. An umbrella typically consists of multiple plastic components, such as the crown, bead, switch, and center rod connector, each with distinct requirements.

The following is a detailed process and key points for the injection molding of umbrella plastic parts.

The Complete Process of Injection Molding of Umbrella Plastic Parts

Phase 1: Component Analysis & Material Selection

Due to the varying functions of different components, material selection is a critical first step.

Umbrella Crown/Tail Bead: Impact-resistant, weather-resistant, and UV-resistant. Materials: ABS and PP. They are low-cost and offer excellent strength. Weather resistance can be enhanced by adding UV inhibitors.

Switch Button: Wear-resistant, pleasant feel, and fatigue-resistant. Materials: POM (polyoxymethylene) and PA (nylon). POM offers excellent wear resistance, self-lubrication, a smooth feel, and a long service life. Middle rod connector: High strength and rigidity. Materials: PA+GF (nylon with glass fiber), PC. Glass fiber-reinforced nylon provides extremely high strength and creep resistance, ensuring a stable rib structure.

Umbrella beads: Excellent toughness and bend resistance. Materials: PP and PE, low cost, good toughness, and resistant to breakage.

Material pretreatment: All materials (especially PA and PC) must be thoroughly dried to prevent silver streaks, bubbles, or strength loss in the finished product.

Phase Two: Mold Design & Manufacturing

Umbrella molds are mostly small or medium-sized multi-cavity molds, with the key focus on ensuring functional structural precision.

Multiple cavities per mold: To improve efficiency, small parts such as switches and beads often utilize a multi-cavity design (e.g., 1-out 8, 1-out 16).

Sliders and core pull mechanisms: Switches often have lateral snaps and undercuts. The mold must utilize slides to accommodate these features for smooth demolding.

High Polish/Texture: The cavity surface is polished (e.g., for switches) or textured (e.g., for umbrella tops, to hide scratches) according to product requirements.

Hot Runner System: For multi-cavity molds, a hot runner system is recommended to reduce gate waste and improve automation.

Cooling and Venting: Design a uniform cooling system to ensure efficiency; provide good venting grooves to prevent burning.

Stage 3: Injection Molding Process

Process adjustments must be tailored to the core requirements of each component.

Umbrella Top/Tail Bead:

Core: Weather resistance. Materials with UV inhibitors must be used.

Processing: Sufficient holding pressure is used to prevent shrinkage and ensure a full appearance.

Switch Button:

Core: Feel and wear resistance.

Processing: Use a higher mold temperature (e.g., 80-90°C for POM) to reduce surface defects and internal stress, ensuring a smooth feel and long-term durability.

Center Rod Connector:

Core: Strength.

Processing: For PA+GF materials, higher material and mold temperatures are required to fully utilize the glass fiber reinforcement and achieve optimal mechanical strength. Be mindful of potential warpage caused by glass fiber orientation.

Beads:

Core: Toughness.

Processing: Use a lower injection speed to reduce internal stress and maintain material toughness.

Stage 4: Post-Processing & Quality Control

Post-Processing:

De-gating: Remove the gate manually or robotically and smooth the surface.

(Optional) Assembly: Some factories offer assembly services, combining the plastic components with the metal ribs and fabric.

**Rigorous Quality Inspection**:

Dimensional Inspection: Use calipers and 2D imagers to inspect critical mating dimensions, such as the snap-on dimensions of switches and the inner diameter of connectors.

Appearance Inspection: Check for defects such as shrinkage, flash, missing material, and air marks.

Functionality Testing (Core):

Switch Testing: Switches are subjected to a reciprocating press test thousands or even tens of thousands of times to verify their ability to detect sticking, wear, or failure.

Strength Testing: The center rod connector undergoes a tensile test to ensure it meets strength standards.

Toughness Testing: The umbrella beads undergo a bending test to ensure they remain breakable.

Weathering Test: The top and tail beads are placed in a QUV test chamber to simulate long-term exposure to sunlight and rain, verifying their resistance to yellowing and aging.

We are a plastic-injection-mould-in-umbrella manufacturer, providing high-quality plastic-injection-mould-in-umbrella manufacturing.  As long as you want to customize/develop plastic-injection-mould-in-umbrella products, you can find us.  We have professional injection mold design and mature manufacturing technology, providing you with one-stop service, from product design-mold making-product production-product packaging-product transportation, we can help you in every link.  As long as you come to us, we will provide you with the ultimate service and satisfy you in terms of product quality, production time, information dialogue, etc.

Plastic Injection Mould making

Plastic molding specifications

Mold design:

Transaction process:

Mold testing:

Product packaging

Factory

We are Custom Plastic Mold factory. Our factory is plastic injection mold maker. we has 17 years of experience in professional custom plastic mold and 10 years of foreign trade experience. We are custom Plastic Mold supplier. We can provide custom Plastic Mold service. Our factory can make the Injection molded plastic parts, and the quality of the products will satisfy you.

We have more than 50 high-end machines and hundreds of engineers and designers. We can provide one-stop service, from product design - mold making - product production - product packaging - transportation. We have a complete production chain. We can meet all your requirements.

Services we provide:

Professional custom mold service, Plastic mold design and manufacturing .plastic product production, product design, mold design, blow mold customization, rotational mold customization, die-casting mold customization. 3D printing services, CNC manufacturing services, product packaging, customized packaging, shipping services.

We always adhere to the principles of quality first and time first. While providing customers with the highest quality products, try to maximize the production efficiency and shorten production time. We are proud to tell every customer that our company has not lost any customer since its establishment.If there is a problem with the product, we will seek a solution actively and take responsibility to the end.

FAQ

Q1: Are you trading company or manufacturer ?

A: We are manufacturers.

Q2. When can I get the quotation?

A: We usually quote within 2 days after we get your inquiry.

If you are very urgent, please call us or tell us in your email so that we can quote for you first.

Q3. How long is the lead-time for mold?

A: It all depends on the products' size and complexity. Normally, the lead time is 25 days.

Q4. I have no 3D drawing, how should I start the new project?

A: You can supply us a molding sample, we will help you finish the 3D drawing design.

Q5. Before shipment, how to make sure the products quality?

A: If you don't come to our factory and also don't have the third party for inspection, we will be as your inspection worker.

We will supply you a video for production process detail include process report, products size structure and surface detail, packing detail and so on.

Q6. What is your payment terms?

A: Mold Payment: 40% deposit by T/T in advance, 30% second mold payment before sending out the first trial samples, 30% mold balance after you agree the final samples.

B:Production Payment: 50% deposit in advance, 50% before sending out the final goods.

Q7: How do you make our business long-term and good relationship?

A:1. We keep good quality and competitive price to ensure our customers benefit for best quality products.

2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.