Plastic Preservation Box Injection Mold

Preservation boxes are the most optimal food preservation. It is suitable for refrigerators, freezers, and dishwashers.  Meanwhile, these boxes may also be stacked and nested to maximize the space available as effectively as possible and to organize your fridge and cupboards perfectly. The freshness box is designed with a latch to secure closing and a nice smooth opening, which is easy to handle, be stackable for optimum refrigerator organization.

The Plastic Preservation Box Injection Mold is an important part of producing good preservation boxes. For making these molds, SWY will choose a standard mold base to ensure mold quality.

The technical information of mold base

The mold base is a comprehensive name used for the parts containing the cavity for plastic injection mold, and also has the role of directly installing the mold to the plastic injection molding machine.

A mold base is a set of parts that constitute the outer periphery part of a plastic injection mold and is constituted mainly from the following parts:

1. Fixed half retainer plate

2. Fixed half mold plate

3. Moving half mold plate

4. Spacer blocks

5. Ejector plate (top)

6. Ejector plate (bottom)

7. Moving half retainer plate

8. Runner stripper plates (in the case of a 3-plate structure)

Although previously the constituent parts of a mold base were all designed and manufactured as required, standard mold bases have recently come into wider use and are being used all over the world. In the case of large-sized molds or small-sized molds, even at present, they are being designed individually for each mold.

Although the standards for mold bases have been prepared in Japan in metric units, they are still being prepared in inch units in the U.S.A. In Europe, as in Japan, it is common to prepare them in metric units.

The following two types of structures are the most commonly used ones for the structure of a mold base:

1. 2-plates structure

2. 3-plate structure

The selection between these two structures is determined by the method of the gate used. When adopting a pinpoint gate structure, always structure 2 is used. In the case of a side gate or a tunnel gate, structure 1 is used normally.

The material for the constituent parts of the mold base is generally the carbon steel for machine construction (S55C, 220C, etc.,) and is used most often in non-hardened conditions. In special applications, pre-hardened steel, or stainless steel, or an aluminum alloy is used sometimes. A mold-based used in combination with accessory parts like guide pins, guide bushes, return pins, etc.