Can the same set of molds be used for plastic water cups of the same type and different materials?

In the previous article, the editor has explained that the molds of plastic water cups and stainless steel water cups with the same cup type are not interchangeable.I recently received a call from a reader. Obviously, the reader should be a practitioner in the water cup industry, but not a production factory.She asked if the plastic water cups with the same shape are made of different materials, can they be produced with the same set of molds? This question needs to be answered in two ways.

First of all, plastic materials with similar material properties and the same production method can share a set of molds.However, these are based on the establishment of many conditions, such as the technological requirements of the product, the difficulty of production, and the structural characteristics of the product itself.

If the above conditions can be met, for example, AS blowing molds and PC materials can share a set of molds, and PC plastic molds can share a set of molds with Tritan materials.But it must not be because AS can be shared with PC, PC can be shared with Tritan, it means that AS and Tritan materials can share a set of molds.The production process of AS and tritan are obviously different, and the production parameters are also quite different.

Secondly, there are more cases where the same set of molds cannot be shared.Take a simple disposable coffee cup as an example.The same are injection molds, but if the material is melamine and Tritan, it must not share a set of molds.Because the two materials have completely different requirements on the production process, including the temperature, pressure, and production time required for production.

Whether it is an injection mold or a bottle blowing mold, the editor understands the buyer's friend's idea very well, because the cost of plastic mold is relatively high, and customers want to use as much compatibility as possible.Therefore, friends must consider which material to use in advance when determining plastic products, of course, the premise is a reasonable pre-order of cost performance and cost input.

Similarly, because the plastic material PP is soft, there will be material changes such as shrinkage during production, so it cannot share the mold with other plastic materials. And the editor will answer a friend's question, is it that the higher the cost of plastic materials, the higher the processing technology, and the better the production cost?Here, the editor will briefly talk about it, because if this issue is discussed from a professional point of view, a book can probably be published. At the same time, the editor does not have this ability.

The requirements of the production process are not entirely determined by the material, but also the requirements of the product structure and the quality of the finished product.The higher the material price is, the higher the production cost must be. It does not mean that the production time is longer or the production labor cost is high, but the material cost is high.

In addition to plastic water cups with mold clamping lines, what other material water cups have mold clamping lines?In this way, as long as the water cup is produced by hot-melt material and is produced by two half-mold clamping, there will be a clamping line.