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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![Beyond Manufacturing: Analyzing Nypro's Vertical Integration Strategy]()
Beyond Manufacturing: Analyzing Nypro's Vertical Integration StrategyThe contract manufacturing landscape is fiercely competitive, yet one name, Nypro (a Jabil company), has maintained a distinctive position for decades. While many molders compete on cost and capability, Nypro competes on a different plane: through deep vertical integration and customer intimacy. Analyzing their strategy provides a masterclass in how to move beyond being a supplier to becoming an indispensable partner.
04/03/2026
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![Navigating Global Markets: A Primer on Key Safety Standards for Baby Teethers and Sippy Straws (FDA, EU, etc.)]()
Navigating Global Markets: A Primer on Key Safety Standards for Baby Teethers and Sippy Straws (FDA, EU, etc.)Selling baby products globally requires compliance with a complex array of safety regulations. Understanding the major standards is crucial for market access. This article provides an overview of key requirements for teethers and sippy straws.
04/03/2026
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Beyond Safety: How Material Science and Design Innovation Create the Next Generation of Best-Selling Baby Teethers
The baby teether market is highly competitive. Success requires products that are not only safe but also uniquely appealing to both babies and parents. This article explores how combining advanced materials with innovative design creates winning products.
04/03/2026
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![Beyond Single-Shot: The Evolution of Multi-Material Molding Technologies]()
Beyond Single-Shot: The Evolution of Multi-Material Molding TechnologiesLiquid Silicone Rubber (LSR) is often chosen for its superb properties: flexibility, biocompatibility, and temperature resistance. But what gives it these characteristics, and how does it transform from a liquid into a durable elastomer? The answer lies in its cure chemistry. For processors, moving beyond empirical "settings" to understand the science of curing is the key to unlocking consistency, quality, and innovation in LSR molding.
04/03/2026
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![Material Deep Dive: Performance and Cost Analysis of LSR vs. TPE-S for Cup Lid Seals]()
Material Deep Dive: Performance and Cost Analysis of LSR vs. TPE-S for Cup Lid SealsChoosing the right material for a cup lid seal involves weighing performance against cost. This article provides a comparative analysis of Liquid Silicone Rubber (LSR) and Styrenic Block Copolymer Thermoplastic Elastomers (TPE-S) for this application.
04/03/2026
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![The Science Behind Silicone: Understanding Cure Chemistry for Better Molding]()
The Science Behind Silicone: Understanding Cure Chemistry for Better MoldingLiquid Silicone Rubber (LSR) is often chosen for its superb properties: flexibility, biocompatibility, and temperature resistance. But what gives it these characteristics, and how does it transform from a liquid into a durable elastomer? The answer lies in its cure chemistry. For processors, moving beyond empirical "settings" to understand the science of curing is the key to unlocking consistency, quality, and innovation in LSR molding.
04/03/2026
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![From Single Cavity to Fully Automatic Line: Scaling Up Medical Bulb Syringe Production Capacity]()
From Single Cavity to Fully Automatic Line: Scaling Up Medical Bulb Syringe Production CapacityMeeting sudden surges in demand for medical supplies like bulb syringes requires a strategic plan for capacity expansion. This article outlines the pathway from small-scale production to a high-throughput, automated line.
04/03/2026
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![From Prototype to Production: A Brief Overview of a Nasal Mask Cushion Mold's Iterative Optimization Journey]()
From Prototype to Production: A Brief Overview of a Nasal Mask Cushion Mold's Iterative Optimization JourneyBringing a new product to market often involves refining the mold design through several iterations. This brief case study outlines the typical optimization path for a nasal mask cushion mold, highlighting lessons learned from initial trials.
04/03/2026
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![Ensuring Breathable Safety: A Durable Valve Disc Supply Solution for Reusable Respirator Facepieces]()
Ensuring Breathable Safety: A Durable Valve Disc Supply Solution for Reusable Respirator FacepiecesReusable respirator facepieces depend on high-quality, durable valve discs for effective exhalation. Ensuring a consistent, reliable supply of these critical components is essential for PPE programs. This article outlines a robust supply solution.
04/03/2026
The Science Behind Silicone: Understanding Cure Chemistry for Better Molding
LSR cures via an addition reaction, also known as hydrosilylation. This is fundamentally different from the radical-based peroxide cure used for High Consistency Rubber (HCR). The reaction involves a platinum-based catalyst facilitating the addition of a silicon-hydride (Si-H) group to a vinyl (C=C) group on another silicone polymer chain. This forms a direct silicon-carbon bond, cross-linking the polymer chains into a three-dimensional network.
The Two-Part System: LSR is supplied as a two-component system (A and B). Part A contains the vinyl-terminated polymers and the platinum catalyst. Part B contains the polymers with the Si-H crosslinker and an inhibitor. They are stored separately and only mixed in the precise 1:1 ratio at the machine's metering unit. The inhibitor temporarily prevents reaction at room temperature, giving the mixed material a usable "pot life."
The Cure Triggers: Heat and Kinetics. When heat is applied in the mold, the inhibitor is deactivated, and the platinum catalyst becomes active. The rate of this crosslinking reaction is not linear; it follows cure kinetics. Initially, the reaction is slow (induction period), then accelerates rapidly to a point of vitrification where the material solidifies, before slowing down as it reaches full cure. The mold temperature is the primary driver: too low, and the cure is incomplete, leading to poor physical properties; too high, and it can cause porosity (from by-product gases) or even "burn" the catalyst.
- Drives the cure to completion, maximizing tensile strength, tear strength, and compression set.
- Drives off any low molecular weight volatiles, which is critical for achieving the required levels of biocompatibility (e.g., USP Class VI) and preventing odor or taste transfer.
- Stabilizes the material's properties, ensuring they remain consistent over the product's lifetime.
- Why vacuum degassing is needed: The mechanical mixing of A and B can introduce air, and the reaction itself can produce hydrogen gas. Trapped air causes bubbles. A vacuum applied to the mixing chamber or the mold itself removes these gases.
- The danger of contamination: Substances like sulfur, tin, amines, and some plastics (like PVC) are "catalyst poisons." Even trace amounts from a dirty mixer, contaminated tools, or nearby processes can inhibit the platinum catalyst, leading to spots of uncured, sticky material.
- The importance of temperature uniformity: A variation of just 5-10°C across the mold surface can lead to inconsistent cure states, causing differential shrinkage, warpage, or areas of weakness.