| 释义 |
postˈforming, vbl. n.
[f. post- A. 1 b + forming vbl. n.]
Shaping of thermosetting laminated plastic carried out upon reheating before setting is complete. So post-ˈformed ppl. a., post-ˈform v. trans.
1945Metals & Alloys XXI. 392/1 (heading) Postformed laminated phenolic plastics. Ibid., 392/2 The term of post-forming is generally used to designate the procedure by which this material is formed after the laminations have been heat-set. 1945Plastics IX. 266/2 The first important reference to laminated plastics for hot post-forming was probably the announcement of ‘Micarta 444’ by the Westinghouse Electric and Manufacturing Co. of America. 1965Encycl. Polymer Sci. & Technol. II. 53 To facilitate this postforming ability, a melamine⁓formaldehyde resin with an added plasticizer is used for impregnation. 1967P. B. Schubert Die Methods II. ii. 53 (heading) Designing dies for postforming thermosetting laminates. 1970Interior Design Dec. 753/1 The 78 feet long, chevron-shaped post office counter is entirely clad in postforming grade Formica laminate. 1971P. Tooley High Polymers ii. 60 Polymethyl methacrylate..softens at about 120°C and becomes quite pliable at 160°C. This enables the sheet polymer to be ‘post-formed’ in the fabrication of smooth streamlined shapes such as windows. 1977Cleethorpes News 27 May 6/7 (Advt.), Worth a second look are..the wide range of worktops in ceramics square and postformed laminates. |