injection molding
C1Technical/Industrial
Definition
Meaning
A manufacturing process where molten material is forced into a mold cavity under high pressure, then cooled to form a solid part.
The process, technology, and industry related to producing plastic or metal components using this method; also refers to the resulting product or the act of performing this process.
Linguistics
Semantic Notes
Primarily a noun phrase referring to both the process and the industry. Can be used attributively (e.g., injection molding machine). The spelling 'moulding' is British; 'molding' is American.
Dialectal Variation
British vs American Usage
Differences
Spelling: British English uses 'injection moulding'; American English uses 'injection molding'. No difference in meaning or process.
Connotations
None beyond regional spelling preference.
Frequency
Equally common in both varieties within technical/industrial contexts; rare in everyday conversation.
Vocabulary
Collocations
Grammar
Valency Patterns
[material] + injection moldinginjection molding + of + [material]specialise in + injection moldingVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None specific to this technical term.”
Usage
Context Usage
Business
We need to reduce costs in our injection molding division.
Academic
The study compared the tensile strength of parts produced by injection molding versus extrusion.
Everyday
This toy car was made using injection molding. (Rare in casual conversation)
Technical
The gate design is critical for minimising weld lines in high-volume injection molding.
Examples
By Part of Speech
verb
British English
- The component is injection moulded from polypropylene.
- They specialise in injection moulding complex parts.
American English
- The part is injection molded in a 300-ton press.
- We outsource the injection molding of these housings.
adverb
British English
- The part was produced injection-moulding style.
American English
- The prototype was created, essentially, via injection molding.
adjective
British English
- The injection-moulding tool requires maintenance.
- It's a standard injection-moulding technique.
American English
- We purchased a new injection-molding machine.
- He works in an injection-molding plant.
Examples
By CEFR Level
- This plastic bottle is made by injection molding.
- Injection molding is used to make many things, like toys and car parts.
- The company invested in automated injection molding to increase production speed.
- Optimising the cooling phase is paramount for reducing cycle times in high-precision injection molding.
Learning
Memory Aids
Mnemonic
Think of a doctor giving an injection: a syringe forces liquid into the body. Injection molding forces molten material into a mold.
Conceptual Metaphor
MANUFACTURING IS SHAPING; MATERIAL IS FLUID.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid literal translation as 'впрыскивающая лепка'. The standard term is 'литьё под давлением'.
Common Mistakes
- Confusing 'molding' (process) with 'mould' (fungus).
- Using 'injection' alone to mean the manufacturing process.
- Misspelling as 'injectional molding'.
Practice
Quiz
What is the primary advantage of injection molding?
FAQ
Frequently Asked Questions
No, while most common for thermoplastics and thermosets, the process is also used for metals (die casting) and other materials like glasses and ceramics.
Injection molding is a formative, high-pressure process ideal for mass production. 3D printing is an additive, layer-by-layer process ideal for prototypes and low-volume custom parts.
The high initial cost is due to the need for precision-engineered, durable metal molds (tools/dies), which are expensive to design and manufacture.
Yes, colourants (masterbatches) are mixed with the base polymer pellets before or during the process, allowing for a wide range of colours.