Injection Moulding Machine for Compact Cases
Compact cases are made on horizontal injection moulding machines, with the base, lid and mirror frame moulded in ABS, SAN, PP or POM, often in family or multi-cavity moulds. Machine size follows the lid projected area, cavity count and mould height, while gate position and mould polish decide how many cosmetic faces pass inspection.
For a compact, machine selection focuses on steady injection for colour and gloss, a clamp that does not distort the thin lid, and accurate hinge filling. Pratishna Engineers supplies horizontal and hybrid injection moulding machines for compact case production and can recommend a configuration for your mould.
Manufacturing Compact Cases?
Share your compact drawing, hinge design, material and monthly volume, and Pratishna Engineers will recommend a suitable machine.
Machine Requirements for Compact Case Moulding
A compact case is judged on its outer face and on how well the lid closes. Points to check when selecting a machine:
- Stable melt temperature for even colour across every cavity
- Gate placed away from the visible top face
- Controlled clamp setting so the thin lid stays flat
- POM or PP grades for an integral living hinge
- Repeatable snap latch fit between lid and base
- Mould height and stroke for family moulds of base and lid
Recommended Machine for Compact Cases
Compact parts are light, so tonnage comes from the number of cavities and the lid area. Hybrid PH Series (120-140 T) machines suit many base and lid moulds where repeatable electric injection helps the cosmetic face. Smaller tools run on the E Series (75-180 T), and the C or H Series takes larger family moulds.
Not Sure Which Machine You Need?
Send your compact drawings or samples for a machine recommendation.
Why Choose Pratishna Engineers?
- Application-Based Machine Selection
- In-House Engineering & Manufacturing
- Multiple Machine Series
- Production-Focused Solutions
- End-to-End Technical Support
- Industry-Specific Solutions
- Machine Lifecycle Support
Injection Moulding Machine Buyer Resources
Download practical resources to help you select, size and specify the right machine.
Horizontal Injection Moulding Machine Selection Guide
A step-by-step guide covering the key inputs needed to select the right machine: product weight, projected area, number of cavities, plastic material, required clamping force, shot / injection capacity, mould dimensions, production quantity, cycle time and automation requirement.
Download PDFPDF · 265 KB
How to Calculate Clamping Force for an Injection Moulding Machine
A clear methodology that explains how clamping force is calculated, covering projected area, injection pressure, safety factor, number of cavities and material considerations.
Download PDFPDF · 363 KBCosmetics & Personal Care Components & Machine Guide
A guide to Cosmetics & Personal Care components, covering compacts, lipstick cases, cream jars, caps, pumps, combs, brushes and hair accessories. It explains cosmetic surface finish, thick-wall clear parts, precise mating components, and how to match each part to a suitable machine.
Download PDFPDF · 203 KB
FAQs / Buyer Questions
Questions compact makers ask before choosing a machine.
Which Injection Moulding Machine Is Used to Make Compact Cases?
Compact moulds usually sit in the lower part of the horizontal range. Hybrid PH or E Series machines suit base and lid tools with a few cavities, while family moulds carrying base, lid and mirror frame together may need the C or H Series.Which Material Suits a Compact Hinge?
An integral living hinge needs POM or PP, which flex repeatedly without cracking. ABS and SAN give a harder, glossier case but crack at a thin hinge, so they are used with a separate pin hinge.Why Does a Compact Lid Warp or Leak Powder?
Lid warpage usually comes from uneven cooling, high holding pressure or excess clamp force bending a thin lid. A lid that is not flat lets powder escape at the rim, so mould temperature and pack settings are set for flatness first.
How Is the Mirror Fitted to a Compact Case?
The mirror is glass or metallised sheet, bought in and fitted after moulding. A moulded frame or lid recess holds it by snap fit or adhesive, so recess depth and flatness must stay consistent from shot to shot.Can Pratishna Recommend a Machine for My Compact Case?
Yes. Share the part drawings or samples, material, hinge and latch design, mould dimensions, cavity layout, finish requirement and monthly volume, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other Cosmetic Packaging Parts Too?
Yes. The same class of machine can mould lipstick cases, cream jars, cosmetic bottle caps and mascara tubes, subject to the mould size and the material.
Technical Disclaimer
Disclaimer: The information provided in this webpage is for general informational and educational purposes only. It is based on technical references and industry information available at the time of preparation and may be subject to change. It does not constitute engineering, technical, commercial or professional advice, nor does it constitute a quotation, specification, warranty or contractual commitment by Pratishna Engineers.
Actual injection moulding machine and process requirements vary according to the component design, material, mould, production volume, machine configuration and operating conditions. The information, examples, calculations and recommendations provided should be independently evaluated and verified for the specific application before making any equipment, process or production decision. Information obtained from third-party sources remains subject to the accuracy and limitations of those sources.
Limitation of Liability: Pratishna Engineers makes no representation or warranty, express or implied, regarding the completeness, accuracy or suitability of the information for any particular application. To the extent permitted by applicable law, Pratishna Engineers shall not be liable for any loss, damage, cost or consequence arising from reliance on or use of the information contained in this webpage. Final machine selection, configuration and application suitability should be confirmed with Pratishna Engineers based on complete and accurate project requirements.
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Planning a New Injection Moulding Project?
Share your component, material, mould and production target. Our engineering team will help you identify the right machine configuration.
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