Recent Posts
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![Meet TYM at K 2025 -The World’ s No.1 Trade Fair for Plastics and Rubber]()
Meet TYM at K 2025 -The World’ s No.1 Trade Fair for Plastics and RubberWelcome to the World’s No.1 Trade Fair for Plastics and Rubber -K 2025, taking place from October 8–15, 2025 at Messe Düsseldorf, Germany. As a professional LSR injection molding machine, mold, and robot solution provider, TYM Technology Co., Ltd. is proud to present our latest innovations at Booth 16E77.
09/23/2025
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![ISO 9001, CE, CCC: What These Certifications Actually Mean for Your Equipment Purchase]()
ISO 9001, CE, CCC: What These Certifications Actually Mean for Your Equipment PurchaseWhen you're evaluating LSR injection molding machines from an overseas supplier, certification logos on a company website can start to blur together. ISO 9001, CE, CCC — they all sound reassuring, but they don't all mean the same thing, and they don't all matter for the same reasons. Understanding what each certification actually covers will help you ask better questions during due diligence and avoid assuming a certificate guarantees something it doesn't.
07/17/2026
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![Turnkey LSR Injection Molding Solutions]()
Turnkey LSR Injection Molding SolutionsLaunching a liquid silicone rubber (LSR) injection molding operation involves far more than simply purchasing a machine. From material selection and mold design to automation integration and staff training, the journey from concept to full-scale production presents numerous challenges—each with the potential to delay your time-to-market and inflate your budget.
07/14/2026
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![Industrial Silicone Seals & Waterproof Parts: LSR Guide]()
Industrial Silicone Seals & Waterproof Parts: LSR GuideThis guide helps product and sourcing engineers who need reliable industrial sealing components-gaskets, O-rings, grommets, and enclosure seals-understand why LSR injection molding is the preferred process for waterproof parts at volume, and how to specify them.
07/10/2026
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![LSR Prototype to Production: Timeline & Process]()
LSR Prototype to Production: Timeline & ProcessA typical liquid silicone rubber (LSR) part moves from prototype to mass production in about 10-18 weeks, spanning design/DFM, prototyping, production mold fabrication, T1 sampling and validation, and pilot-to-ramp - with mold build and validation being the longest stages.
07/07/2026
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![LSR Injection Molding Machine Parameters Explained]()
LSR Injection Molding Machine Parameters ExplainedAn LSR injection molding machine spec sheet lists dozens of numbers, but only a handful decide whether your silicone parts cure fully, stay flash-free and cost little to run. This 2026 guide explains the parameters that matter most, so engineers and buyers can compare machines on the specs that actually affect part quality, not marketing figures.
07/02/2026
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![Automatic vs Semi-Automatic Silicone Molding Lines]()
Automatic vs Semi-Automatic Silicone Molding LinesThis guide is for production and procurement decision-makers sizing a new LSR line—comparing the two configurations across throughput, quality, cost, and payback so you can match the investment to real demand.
07/01/2026
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![LSR Cold Runner Systems: Cut Waste & Cost]()
LSR Cold Runner Systems: Cut Waste & CostLSR cold runner system is the single fastest way to cut material waste and labor out of liquid silicone rubber molding. By keeping the silicone liquid until it reaches the cavity, it eliminates cured runners and trimming entirely. This guide helps process engineers and buyers decide when a cold runner pays for itself.
06/30/2026
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![How to Select LSR Injection Molding Machine Tonnage]()
How to Select LSR Injection Molding Machine TonnageChoosing the right clamping force is the single most consequential spec decision when buying a liquid silicone rubber (LSR) injection molding machine. Pick too little and you fight flash on every shot; pick too much and you pay for energy and floor space you never use.
06/29/2026
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![Liquid Silicone Rubber Market 2026: Size, Growth & Demand Drivers]()
Liquid Silicone Rubber Market 2026: Size, Growth & Demand DriversThe global liquid silicone rubber (LSR) market is valued at roughly USD 3.4-3.8 billion in 2026 and growing about 7-9% annually, led by medical-grade demand (~44% of revenue) and rising EV production. Asia-Pacific dominates manufacturing capacity.
06/26/2026
How Does Vacuum Assistance Improve LSR Injection Molding Quality?
In liquid silicone rubber (LSR) manufacturing, product quality is heavily influenced by how effectively air is removed from the mold cavity. Trapped air can lead to bubbles, incomplete filling, surface defects, and reduced product consistency. This is why vacuum LSR injection molding has become an important technology for manufacturers producing high-precision silicone components.
Quick Answer
Vacuum-assisted LSR injection molding removes air from the mold cavity before injection, helping reduce air traps, improve cavity filling, and produce higher-quality silicone parts with fewer defects.
Why Air Traps Are a Problem in LSR Molding
LSR materials have low viscosity and can flow into very small mold features. However, when air remains inside the mold cavity, it can become compressed during injection.
Common problems caused by trapped air include:
Air bubbles
Short shots
Burn marks
Surface imperfections
Inconsistent product dimensions
These defects can increase scrap rates and reduce manufacturing efficiency.
How Vacuum Assistance Works
A vacuum system is connected to the mold cavity through specially designed channels. Before injection begins, the vacuum pump removes air from the cavity.
Once the desired vacuum level is reached, the machine injects the liquid silicone material into the mold. Because most of the air has already been removed, the material can fill the cavity more smoothly and evenly.
This process is particularly useful for thin-wall parts and complex geometries.
Industries That Benefit from Vacuum LSR Injection Molding
Vacuum-assisted molding is widely used in industries where product quality is critical:
Healthcare components
Automotive seals
Electronic connectors
Precision consumer products
For medical applications, reducing air bubbles is especially important because even small defects may affect product performance.
Expert Tip
When designing an LSR mold, vacuum channels should be considered during the early design stage. Proper venting and vacuum placement can significantly improve molding results.
FAQs
Q1:What is vacuum LSR injection molding?
A:It is a molding process that removes air from the mold cavity before silicone injection.
Q2:Why is vacuum assistance important?
A:It helps reduce bubbles, short shots, and other molding defects.
Q3:Which products benefit most from vacuum molding?
A:Medical, automotive, and precision silicone components benefit the most.
Q4:Does vacuum molding increase production costs?
A:The initial investment may be higher, but improved product quality often reduces overall production costs.
Q5:Can vacuum systems be added to existing molds?
A:In many cases, molds can be modified to incorporate vacuum functions.