Method and appartus for moulding
AssigneeBBM Technology Ltd
InventorsGraham John Bratton, Roger Leslie Brown
Life of this patent
Estimating the term…
Abstract
In the moulding of cementitious articles, a flexible plastics mould e.g. of LDPE may be used to permit de-moulding of the articles e.g. by flexion of the mould. Moulds filled with hydraulically settable material may be supported in frames configured e.g. with plug and socket formations on upper and lower faces for cooperation with moulds to retain them in position and for cooperation with overlying and underlying frames to permit stacking.
Claims21
1-51. (canceled)
A method for casting a shaped article from hydraulically settable material which includes the steps of:
- introducing the hydraulically settable material into a mould and allowing it to harden at least to a green state;
- and
- removing the hardened material from the mould,
- wherein the mould is of a flexible low surface energy thermoplastics material and removal is by deformation of portions at least of the mould.
A frame for supporting a plastics mould for complex shapes in cement paste, said frame being configured to permit vertical stacking of the moulds.
A method for casting or otherwise forming of a shaped article from a settable material requiring a flexible mould for ease of release which includes the steps of:
- introducing the settable material into a mould and allowing it to harden;
- and
- removing the hardened material from the mould,
- wherein the mould is of a flexible low surface energy thermoplastics material and removal is by deformation of portions at least of the mould.
Dependencies are inferred from the claim text.