Zhongsuwang TPE | What are the factors that affect the softness of TPR teethers?

Zhongsuwang TPE | What are the factors that affect the softness of TPR teethers?

In infant products, the satisfied little expression of the baby when chewing the teether hides the great knowledge of materials science. The softness of the seemingly ordinary TPR teether is not accidental, but the result of multiple factors. How do these factors affect the touch of the teether? How to ensure the balance between safety and comfort? Follow the steps of Huizhou Zhongsuwang editor and let us explore it in depth.

I. Component ratio design in the formula

TPR material is a mixture of thermoplastic resin and softening oil and other ingredients. Among them, the ratio of each component is extremely critical, and different ratios will significantly change the softness of the teether TPR material.

Softening oil content: This ingredient is the key to adjusting softness. The higher the content, the softer the material, and vice versa. For example, when the softening oil content is low, the teether made of TPR material will have a slightly harder texture, while the teether with a high softening oil content can provide a softer touch for babies who have just teethed and reduce gum discomfort.

Resin type characteristics: The molecular structure and distribution of different resins will affect the toughness of the material, and there are also differences in compatibility with softening oil, which indirectly affects the overall softness. Resins with narrow molecular weight distribution can make the material texture more uniform and the touch more delicate.

At the same time, the mixing uniformity of resin and softening oil cannot be ignored. Only by fully mixing can the softness of TPR material teeth glue be consistent everywhere, avoiding local overhardness or oversoftness.

2. Temperature and treatment methods of production process

Processing temperature control: The melting temperature during production will affect the state of the molecular chain of TPR material. Inappropriate temperature may cause the material to harden or change its performance;.

Crosslinking degree adjustment: By controlling the crosslinking degree between molecular chains, the material can be kept elastic while avoiding overhardness, but excessive crosslinking will reduce the softness of TPR material teeth glue.

3. Product structure and additive effects

Fillers and plasticizers: Adding fillers to TPR materials may increase hardness, while environmentally friendly plasticizers can adjust softness within a safe range;

Shape and thickness design: For teethers of the same material, the thinner the thickness or the more special the structure, such as the hollow design, the softer the touch, and the local raised parts may also enhance softness through structural optimization.

In short, the softness of TPR teethers is the collaboration of material formula, production process and product design. Every adjustment of the proportion of ingredients, every degree of temperature control, and every optimization of the shape are to bring a safer and more comfortable chewing experience to infants and young children. Understanding these influencing factors can not only help parents choose better quality teethers, but also let everyone see the ingenuity and science behind our Zhongsuwang TPR material infant products.