undercurev.

1916 Jrnl. Soc. Chem. Industry 31 Aug. 872/1 It is..common in the case of many goods for manufacturers when vulcanising to undercure rather than overcure the rubber so as to avoid the danger of over-vulcanising and consequent deterioration.

1965 Encycl. Polymer Sci. & Technol. II. 53 To increase the bending capacity still more, the laminated sheets are usually slightly under~cured.

1912 Jrnl. Soc. Chem. Industry 16 Dec. 1100/1 Nos. (1) and (2) [sc. specimens of rubber] were distinctly under~cured at 35 lb.

1940 J. Osborne Dental Mech. xi. 128 Under-cured vulcanite is soft and weak, and permeable to mouth fluids and bacteria.

1952 J. Delmonte Plastics Molding ix. 265 An overcured plastics part is even more difficult to recognize than an undercured piece, primarily because most plastics are not critical in their time of cure.

1968 SPE Jrnl. Nov. 47/1 Undercured resins are inferior..but long cure times are uneconomical.

1916 Jrnl. Soc. Chem. Industry 31 Aug. 872/2 If the impulse is insufficient..we have the condition of undercuring and the rod falls back, corresponding with a gradual deterioration of the vulcanised product.

1969 Jrnl. Paint Technol. 41 702 (heading) Effect of undercuring on durability of siliconized polyester enamels with hexakis(methoxymethyl) melamine.

1915 Jrnl. Soc. Chem. Industry 15 Oct. 990/2 In the case of undercures the curve often breaks off too soon for this to be apparent.

1965 Encycl. Polymer Sci. & Technol. II. 53 This undercure slightly reduces the quality of the surface, but other advantages are gained so that today a substantial fraction of the total production of decorated, laminated sheet stock is plasticised.