Heated lunch box moulding

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 Heated lunch box 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 Heated lunch box products, we can make corresponding plastic parts, which is mainly done through injection molds.

The full-process technical solution for the production of heating lunch box injection molds is systematically explained by integrating the latest intelligent injection molding technology to meet the core requirements of electric heating element integration, sealing and temperature resistance, and food-grade safety:

1. Function-oriented mold design (focusing on thermal management & sealing)

Embedded architecture of electric heating components

Using in-mold electronics (IME) technology, the nickel-chromium alloy heating circuit is directly injected into the PPSU material, and the conductivity accuracy of 0.1Ω/m is achieved through laser activation to avoid stress cracking caused by traditional inserts.

The temperature sensor slot is designed with a nano-coated insert (AlCrN), and the thermal conductivity is increased to 180W/m·K, and the response delay is <0.3 seconds.

Multi-layer sealing system construction

The main body and cover are made of dual-material injection molding: hard PPO support layer (thickness 1.5mm) + food-grade LSR liquid silicone sealing layer (Shore hardness 30A), and the in-mold vulcanization time is compressed to 8 seconds.

The pressure relief valve integrates a micro-slider structure, which can achieve precise control of the opening and closing force of 20N within a 0.5mm stroke, ensuring automatic opening when the steam pressure is >50kPa.

Thermal expansion compensation structure

The wave-shaped reinforcement rib array (amplitude 0.8mm/wavelength 6mm) is designed to absorb 0.15mm linear expansion at an operating temperature of 120℃.

A 0.25mm dynamic gap is reserved at the buckle connection, and the shape memory alloy (SMA) ejection mechanism is used to compensate for thermal deformation.

2. Intelligent mold manufacturing system

Ultra-precision machining cluster

The five-axis magnetic suspension machining center (repeat positioning accuracy ±0.8μm) is used to mill the heating cavity surface, and the surface roughness Ra≤0.12μm reduces the risk of bacterial attachment.

The steam channel uses femtosecond laser drilling technology to achieve a Φ0.3mm micropore array (depth-to-diameter ratio 15:1), and the flow error is <3%.

Adaptive temperature control system

Deploy phase change material (PCM) cooling module, implant paraffin/graphene composite material in the heating area, and achieve an instantaneous heat absorption capacity of 400J/cm³.

The mold temperature controller is linked with the injection molding machine to switch the gradient temperature field from 80℃→40℃ within 0.1 seconds to eliminate the anisotropy caused by glass fiber orientation.

Industry 4.0 quality center

The mold is equipped with a 32-channel fiber optic sensor network to monitor the cavity pressure in real time (sampling rate 10kHz), and predict the wall thickness deviation of the heating zone through digital twins.

The visual inspection system uses terahertz imaging technology to penetrate 3mm material to detect the integrity of the internal circuit, with a defect recognition rate of 99.7%.

III. Key technologies for verification and mass production

Extreme working condition simulation test

Hot and cold shock test: After 1000 cycles from -20℃→125℃, the compression permanent deformation of the sealing ring is ≤8% (ASTM D395 standard).

Pressure alternating test: 72 hours under 30kPa positive and negative pressure alternation environment, leakage rate <0.05ml/min.

Innovative application of materials

Developed silicone modified PPE material, the temperature resistance level was increased to 150℃ and passed FDA 21 CFR 177.2460 certification.

Using the micro-foam injection molding (MuCell®) process, the density was reduced by 18% while the bending modulus was maintained at 2100MPa.

Smart factory production configuration

Configure collaborative robots to complete automatic lamination of heating films, positioning accuracy ±0.03mm, and production cycle compressed to 45 seconds/piece.

The energy management system optimizes the heating power in real time, saving 32% energy compared to traditional processes (ISO 50001 certification data).

IV. Frontier technology embedded solution

Self-repairing mold coating: Spray WC/Co coating containing microcapsules on the surface of the cavity, automatically release the repair agent after wear, and extend the mold life to 3 million times.

Quantum dot temperature control indication: Photochromic materials are embedded during injection molding to intuitively display regional temperature distribution through color changes (accuracy ±1.5℃).

Neuromorphic computing parameter adjustment: The autonomous process optimization system based on the spiking neural network (SNN) can achieve the best parameter combination within 20 trial molds.

We are a Heated lunch box mold manufacturer, providing high-quality Heated lunch box mold manufacturing. As long as you want to customize/develop Heated lunch box 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.