EXPERT IN PLASTIC INJECTION MOLD&MOLDING&PROTOTYPING
GALAXY3DM assists you in the design and manufacture of your parts and sub-assemblies in silicone materials. Our integrated offer of service in China provides you with a trusted collaboration with a single silicone engineering sub-contractor
EXPERT IN PLASTIC INJECTION MOLD&MOLDING&PROTOTYPING
GALAXY3DM assists you in the design and manufacture of your parts and sub-assemblies in silicone materials. Our integrated offer of service in China provides you with a trusted collaboration with a single silicone engineering sub-contractor
Liquid Silicone Rubber Molding
Galaxy3DM uses a variety of methods to produce Silicone Mold and Molding parts.
Our experienced engineers will select the best method for your project based on factors such as production volume, parts dimensions, budget, and other requirements.
Our extensive experience with LSR Molding enables us to produce innovative and cost effective parts for our OEM customers.
Designing Silicone Rubber Parts:
Learn how to design parts for the liquid silicone rubber molding process, including maximum feature thickness, surface finish options, and more.
Design Guidelines: Liquid Silicone Rubber Molding
Our basic guidelines for liquid silicone rubber molding include important design considerations to help improve part moldability, enhance cosmetic appearance, and reduce overall production time.
Size Maximum Dimensions IN
| SIZE | 12 in. x 8 in. x 4 in. |
|---|---|
| VOLUME | 26 cu. in. |
| DEPTH | No greater than 2 in. from any parting line; deeper parts are limited to a smaller outline |
| PROJECTED MOLD AREA | 65.5 sq. in. |
Size Maximum Dimensions MM
| SIZE | 304.88mm x 203.2mm x 101.6mm |
|---|---|
| VOLUME | 426064 cu. mm |
| DEPTH | No greater than 50.8mm from any parting line; deeper parts are limited to a smaller outline |
| PROJECTED MOLD AREA | 42257.98 sq. mm |
Typically, Galaxy3DM can maintain a machining tolerance of +/- 0.003 in. (0.08mm) with a linear tolerance of +/- 0.01 in./in. (0.01mm/mm).
Material
Standard silicone (30, 40, 50, 60, and 70 durometers)
Medical-grade silicone
Optical-grade silicone
Fluorosilicone (fuel and oil resistant)
Surface Finishes
| FINISH | DESCRIPTION |
|---|---|
| PM-F0 | non-cosmetic, finish to Galaxy3DM discretion |
|
PM-F1 |
low-cosmetic, most toolmarks removed |
|
SPI-C1 |
600 grit stone, 10-12 Ra |
| PM-T1 | SPI-C1 + light bead blast |
| PM-T2 | SPI-C1 + medium bead blast |
| SPI-A2 | grade #2 diamond buff, 1-2 Ra |
Draft
| VERTICAL FACES | 0.5° |
|---|---|
| MOST SITUATIONS | 2° |
| MINIMUM FOR SHUT OFF | 3° |
| MINIMUM FOR LIGHT TEXTURE (PM-T1) | 3° |
| MINIMUM FOR LIGHT TEXTURE (PM-T2) | 5°+ |
While 1 degree of draft is common in LSR parts, zero draft can occasionally be tolerated on shallow parts. The nature of LSR allows the rules of draft to be stretched more so than thermoplastics, if mold construction permits.Adding draft angles to design, even on LSR parts, helps facilitate ejection of a part from a mold, and improves overall moldability.
Wall Thickness
Galaxy3DM Recommended wall thickness considerations for LSR molding:
Walls as thin as 0.010 in. (0.254mm) are possible, depending on the size of the wall and the location of adjacent thicker sections.
Rib thickness should be from 0.5 to 1.0 times the adjoining wall thickness.The radii of inside fillets should typically be approximately equal to the wall thickness. Radii that are much larger or smaller than this may cause porosity.
Note: Proper wall thickness will reduce the risk of cosmetic defects in plastic parts.
Undercuts
LSR molding has the ability to produce parts with undercuts. Many simple undercuts can be easily removed by the press operator without mechanical assistance. Each part will be reviewed on a case by case basis for feasibility.
Undercuts, such as those shown, can complicate and, in some cases, prevent part ejection, so eliminate them if possible.
Radii
Some part corners will have a radius rather than a sharp edge since we use an automated CNC milling process to make the mold for your parts. This typically does not require a change to your model, but resulting radii are identified before the mold is milled.
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Contact：
Tel: 86-755-23000620 Fax: 86-755-23000621
Email:info@galaxy3dm.com/info@seetoptech.com
Address: A3 , Dingfeng Industrial Zone, Fuyong Town, Shenzhen, China
Galaxy 3D Manfacturing Solution
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