This infant cognitive puzzle block produced by Xiangchu is made of food-grade liquid silicone rubber, with soft texture, bite-resistant, rounded edges without burrs. It helps babies exercise cognitive and hands-on abilities, is safe and reliable, and supports customization.
Material
Food-grade LSR
Hardness
Shore A 30-50
Temperature
Certifications
Applications
-40°C ~ +200°C
Colors
Black, White, Transparent, Customizable
# Food-grade LSR Infant Cognitive Puzzle Blocks
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Designed specifically for early sensory development and cognitive learning for infants aged 6 months to 3 years, our Food-grade LSR Infant Cognitive Puzzle Blocks are made entirely from high-purity liquid silicone rubber (LSR) produced in-house at 橡楚（湖北）橡胶有限公司. These soft, interlocking puzzle blocks combine the safety benefits of food-contact approved silicone with the developmental benefits of shape recognition play, creating a durable, non-toxic play solution that grows with your child.
Unlike traditional wooden or plastic puzzle blocks that can splinter, leach harmful chemicals, or chip with repeated use, our LSR puzzle blocks offer unmatched softness and impact resistance. They are fully chewable, making them ideal for teething infants who naturally explore objects through mouthing, while retaining enough structural rigidity to hold interlocking shapes during play. Every block is manufactured in our controlled production facility located at 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号, with strict material sourcing and end-product testing to ensure compliance with global food-contact safety standards.
Core selling points of this product include 100% food-grade liquid silicone rubber construction, BPA and phthalate-free formulation, soft impact-absorbing design to prevent injury during play, easy cleaning and disinfection, and long-term durability that resists fading, staining, and degradation from repeated use and sanitization.
Manufactured via precision liquid injection molding (LIM) with the following controlled production parameters:
As a chewable play product for young children, safety is our top priority. All puzzle blocks are produced from virgin food-grade LSR with no recycled materials or harmful additives. The post-curing process eliminates residual volatile compounds, resulting in an odorless product that meets the strictest global food-contact safety standards. Unlike plastic puzzle blocks that can leach endocrine-disrupting chemicals over time, our LSR material remains chemically stable throughout its product lifecycle, even when exposed to high temperatures during cleaning or sterilization.
Infants learning to sit, crawl, and play are at high risk of impact injuries from hard toy blocks. Our soft LSR material absorbs impact far better than wood, rigid plastic, or foam, reducing the risk of cuts, bruises, or dental damage when blocks are dropped or thrown during play. The matte non-slip surface is easy for small, developing hands to grip, helping infants build fine motor skills and hand-eye coordination as they grasp, sort, and assemble the blocks.
LSR has natural resistance to dirt, stains, bacteria, and mold, making our puzzle blocks far easier to clean and maintain than porous foam or wood products. Blocks can be safely disinfected by boiling, steam sterilization, dishwasher washing, or wiping with food-grade sanitizer, without degrading the material or causing fading. LSR does not crack, splinter, or absorb liquids, so the blocks retain their shape and performance for years of use, even with frequent teething and rough play.
Manufactured via precision liquid injection molding at our facility, each puzzle block has consistent, tight-tolerance interlocking edges that hold shapes together during play, while still being easy enough for small hands to take apart. Unlike cut foam or hand-finished plastic blocks, our LIM process ensures every block has smooth, rounded edges with no sharp corners or burrs that could irritate an infant’s skin or gums.
Our Food-grade LSR Infant Cognitive Puzzle Blocks are designed for a range of early development use cases across consumer and institutional settings:
Because all materials are food-grade safe, the blocks are also suitable for use as teething accessories and sensory play tools for infants who engage in exploratory mouthing behavior, a normal part of early development.
We offer our Food-grade LSR Infant Cognitive Puzzle Blocks in a single standard hardness of 35 Shore A, which is optimized for infant use. This hardness provides the ideal balance of softness for safe chewing and impact absorption, and enough structural rigidity to hold interlocking shapes during play. We do not recommend harder LSR grades for infant puzzle blocks, as higher hardness increases the risk of injury during use.
We offer two standard sets to match different developmental stages:
Custom sizes and shape designs are available for bulk orders, with a minimum order quantity applied.
All our infant cognitive puzzle blocks are produced exclusively from our highest-grade food-grade LSR material. We do not offer lower-grade industrial or non-food-contact materials for this product, to ensure consistent safety for all users.
At 橡楚（湖北）橡胶有限公司, we maintain a strict quality management system certified to ISO 9001, covering every stage of production from raw material incoming inspection to final product testing. Every batch of our Food-grade LSR Infant Cognitive Puzzle Blocks undergoes third-party testing for harmful substances, including heavy metals, phthalates, BPA, and volatile organic compounds, to ensure compliance with global safety standards.
Our production facility is located at 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号, where we control every step of the manufacturing process in-house, from LSR compounding to final molding and finishing. This allows us to maintain full traceability of all raw materials and consistent quality across every production batch.
For bulk orders, custom inquiries, or additional product information, please contact us at:
