1. Basic guidelines for choosing materials for syringe injection moulds
When it comes to medical moulds, the materials used to make syringes' injection moulds usually have to follow certain basic rules:
First of all, the material needs to be able to withstand corrosion well.
This is because many of the plastic raw materials used to make syringes need to be processed at high temperatures, and the production environment needs to be very clean. If the mould material doesn't resist corrosion well enough, it can easily harm the surface and lower the quality of the result.
The material also needs to be very resistant to wear.
Syringes are made in large quantities, and many of the moulds used to make them are high cavity moulds, like:
mould with 32 cavities
mould with 48 cavities
64 cavity mould or more
the materials used to make medical injection moulds need to have outstanding processing performance, strong thermal stability, and excellent polishing performance. This is because syringe products need to be clear and look beautiful.
2. Common materials used to make injection moulds for syringes
1 S136 mould steel
S136 is a highly common material for medical moulds and is often used to make injection moulds for syringes.
This substance has the following features:
Very good at resisting rusting
High hardness and good polishing performance
Quality of the surface stays the same
S136 material is often utilised in the hollow part because it meets the high transparency criteria of syringe goods and is good for mirror polishing.
2 H13 mould steel
H13 mould steel is also used a lot in medical injection moulds, notably for structural pieces or sections that have to hold up under a lot of stress.
The primary things that make it what it is are:
Good strength
High strength and good resistance to thermal fatigue
Long life
H13 material is typically used for portions of moulds or sliders.
3 1.2344 Mould Steel
1.2344 mould steel is also quite common in the world of precision moulds. This substance can help keep things stable in some high-end syringe injection mould production.
Some of its benefits are:
Strong and resistant to wear
Stable at high temperatures
Good for making things over a lengthy time
4 1.2083 Mould Steel
1.2083 is also a typical choice for medical injection mould materials that need to be very resistant to corrosion.
This stuff has:
Works well to stop corrosion
Good polishing results
Stability in many dimensions
a lot of mould makers use it to make cavities with very high accuracy.
2. Guidelines for choosing the right materials for different areas of syringe injection moulds
When designing injection moulds for syringes, it's common to use more than one material. Instead, the design is based on how the many pieces of the mould work together.
Choosing the materials for the cavity
The cavity part is what makes the syringe look good and fit together correctly, therefore in general:
S136 one point two zero eight three
High-quality stainless steel mould steel
These materials can make polishing look great and also resist rust well.
Choosing Type 2 Core Materials
The core element gets a lot of wear, so the material needs to be very strong and resistant to wear.
Some common alternatives are:
H13 one point two three four four High strength mould steel
This can make injection moulds for syringes last longer.
3. Choosing the materials for the mould frame
The mould frame mostly needs to be strong enough to hold its shape, and it doesn't normally need to be polished very well, therefore it is usually chosen:
45# steel P20
Steel for standard formwork
This can lower the cost of making things while yet keeping the structure stable.
4. The medical field has special needs for mould materials.
Medical injection moulds frequently have to meet some extra requirements that regular plastic moulds don't have to. For example:
Mould materials that are very stable
resistant to rust
Products that don't pollute
The surface can make a really good mirror effect.
The product needs to be very clean, especially when making disposable syringes, thus the mould material must not be able to get into the product.
A lot of high-end medical moulds will also go through:
heat treatment in a hoover
Treatment to make the surface stronger
Polishing with high precision
To make the mould even better.
5. How to choose the right resources based on what you need to make
Companies normally need to think about the following things when picking injection mould materials for syringes:
the amount of production. If the production scale is big, it's best to use materials that don't wear out as quickly to make sure the mould lasts as long as possible.
the product must be accurate. If you need very precise dimensions and a good look, you need to use mould steel that polishes better.
