Tri-Star Plastics, Inc.
Phone 714-533-7360
Fax 714-533-4383
info@tri-starplastics.com

Guide for Manufacturer
CLASSIFICATION OF INJECTION MOLDS UP TO 400 TONS
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Here we will attempt to detail the materials and the processes to be used in producing the various classifications of molds

GENERAL SPECIFICATIONS

1. Customer to approve mold design prior to start of construction.

2. All molds, with the exception of prototype, to have adequate channels for temperature control.

3. Wherever feasible, all details should be marked with steel type and rockwell hardness approximately .005 deep.

4. Customer name, part number, and mold number should be steel stamped on all mold and/or inserts.

5. All molds should have eyebolt holes on the top side. There should be one above and one below the parting line to facilitate mold removal, if required, in halves.

CLASS 101 MOLD

1. Detailed mold design required.

2. Mold base to be minimum hardness of 280 BHN.

3. Molding surfaces (cavities and cores) must be hardened to a minimum of 48 R/C range. All other details, such as sides as slides, heel blocks, gibs, wedge blocks, etc. should also be of hardened toof steels.

4. Ejection should should be guide.

5. Slides must have wear plates.

6. Temperature control provisions to be in cavities, cores and slide cores wherever possible.

7. Over the life of a mold, corrosion in the cooling channels decreases cooling efficiency thus degrading part quality and increasing cycle time. It is therefore recommended that plates or inserts containing cooling channels be of a corrosive resistant material or treated to prevent corrosion.

8. Parting line locks are required on all molds.