Welcome Professional Custom Parts Machining and Mold Service Provider
PqMold is your trusted one-stop custom manufacturing solution, from prototype design to manufacturing, through huge manufacturing resources, suitable technology, streamlined process, expert guidance, and perfect quality inspection process to turn your ideas into reality.
PqMold offers quick turnaround times as fast as 15 days or more for your prototypes, and stock various grades and durometers of LSR materials. To make the most precise and high-quality molding in as little time and cost as possible.
With many years of manufacturing experience, PqMold offers the best solutions for all rapid prototyping and low-volume manufacturing needs. We streamline the innovation cycle into four simple but effective steps.CNC Machining Services
Just simply upload your CAD files and submit RFQs with clear information online.
We'll send you design for manufacturability analysis and transparent pricing.
Our experts will produce your parts with the required technologies and materials.
Your parts will be delivered to your door directly with stringent deadlines.
Using liquid silicone as the raw material, liquid silicone is injected into the mold using an injection molding machine, and after additional steps involving heating and cooling, the finished product is created. In comparison to solid silicone, liquid silicone is odorless, safe, and ecologically friendly. It is often referred to as liquid silicone rubber. Liquid silicone injection molding is a straightforward process; it does not require the manual steps of solid silicone processing, such as dosing, refining, cutting, and laying out, which call for manual product handling or even a completely automated production line without human involvement.
LSR parts are manually removed from the mold due to their flexible nature, which eliminates the need for ejector pins in the mold design. A CNC machining process creates a high-temperature tool that can withstand the LSR molding process. Once the tool is milled, it is polished by hand according to customer specifications, providing six standard surface finish options.
The final tool is then loaded into a state-of-the-art LSR-specific injection molding press that is precisely geared to ensure accurate shot size control, resulting in consistently high-quality LSR parts. LSR is permanently molded once it is set as a thermosetting polymer, unlike thermoplastics that can be melted and remolded. Once the production run is complete, the parts, or the initial sample run, are promptly boxed and shipped.
The use of PqMold’s LSR can enhance part formability, improve appearance, decrease production time, and boost efficiency. PqMold can maintain a machining tolerance of +/- 0.003 in. (0.08mm) with a linear tolerance of +/- 0.025 in./in. (0.025mm/mm).
US | Metric | |
SIZE | 12 in. x 8 in. 4 in. | 304.88mm x 203.2mm x 101.6mm |
VOLUME | 13.3 cu. in. | 217,948 cu. mm |
DEPTH | No greater than 2 in. from any parting line; deeper parts are limited to a smaller outline | No greater than 50.88mm from any parting line; deeper parts are limited to a smaller outline |
PROJECTED MOLD AREA | 48 sq. in. | 30968 sq. mm |
Polymer comprised of siloxane that features a rubber-like consistency with molecules that have chains of alternating oxygen and silicon atoms.
Medical grade silicones are silicones tested for biocompatibility and are appropriate to be used for medical applications.
Optical grade silicon is used in infrared optics for systems operating in the mid-infrared range MWIR 3-5 um. Optical transparent LSR polymers, as well as thermoplastic and thermoset optical polymers, offer benefits over glass.
Fluorosilicone rubber is based on silicone rubber but has fluorine groups added to the main polymer chain. Like silicone, fluorosilicone is a stable, long-lasting elastomer that resists compression set across temperature extremes.
Polymer comprised of siloxane that features a rubber-like consistency with molecules that have chains of alternating oxygen and silicon atoms.
Medical grade silicones are silicones tested for biocompatibility and are appropriate to be used for medical applications.
Optical grade silicon is used in infrared optics for systems operating in the mid-infrared range MWIR 3-5 um. Optical transparent LSR polymers, as well as thermoplastic and thermoset optical polymers, offer benefits over glass.
Fluorosilicone rubber is based on silicone rubber but has fluorine groups added to the main polymer chain. Like silicone, fluorosilicone is a stable, long-lasting elastomer that resists compression set across temperature extremes.
Here are some surface finishes for Liquid Silicone Rubber Molding:
Non-cosmetic, finish at PqMold’s discretion
Low-cosmetic, most tool marks removed
Non-cosmetic, EDM permissible
600 grit stone, 10-12 Ra
SPI-C1 + light bead blast
Non-cosmetic, finish at PqMold’s discretion
Low-cosmetic, most tool marks removed
Non-cosmetic, EDM permissible
600 grit stone, 10-12 Ra
SPI-C1 + light bead blast
From prototyping to silicone injection molding for customers at competitive prices, which showcases some of our finished high-quality consistent-performance liquid silicone injection molding parts, and trust us to create your LSR project according to your exacting specifications.
Since injection molding can achieve high precision at good manufacturing speeds without changing the material’s structure, it is becoming more familiar with the ever-expanding range of machines, control systems, and tools used for injection molding. PqMold is committed to providing precision machining services for all walks of life, our injection-molded precision parts are found in all walks of life, including.
The primary difference lies in the fact that liquid silicone rubber (LSR) is a “flowable” or “liquid” material, while high-consistency rubber (HCR) is not. LSR is cured using only platinum-based additives, while HCR can be cured using either peroxide or platinum.
The siloxane bond strength of silicone rubber makes it different from other elastomers. The strength of the siloxane bond is 433 kJ/mol, whereas the binding energy of carbon bonds is 355 kJ/mol.
Typically, it takes around 24 hours for silicone sealants to fully cure and become sturdy enough to withstand exposure to water, moisture, and regular usage.
The cost depends on your requirements, many factors contribute to the price, like the size of the component, mold complexity, number of injection cavities, materials, post-processing needs, etc.
If you have a project in mind, our team is ready to guide you from concept to completion with expert support and reliable engineering solutions. Reach out to us and let’s build it together.
Have questions or need support? Fill out the form below and our team will get back to you as soon as possible with the assistance you need.
