| 单词 | vacuum forming |
| 释义 | > as lemmasvacuum forming vacuum forming n. a type of thermoforming in which a vacuum is used to draw the plastic into the mould (see quot. 1974). ΘΚΠ society > occupation and work > industry > working with specific materials > working with rubber or plastic > [noun] > moulding plastics preforming1931 injection moulding1932 compression moulding1940 transfer moulding1940 slush moulding1943 postforming1945 vacuum forming1946 drape forming1958 thermoforming1958 1946 J. Sasso Plastics Handbk. for Product Engineers v. 308 In the vacuum-forming process the plastic sheet is heated to approximately 250F. 1974 Encycl. Brit. Macropædia XIV. 521/1 In simple vacuum forming, the plastic sheet is clamped over an airtight box, from which air is exhausted, rapidly drawing the heated plastic down on a ‘former’ within the box, thus reproducing its shape. < as lemmas |
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