Compression molding hollow structure
AssigneesMagna Exteriors Inc., Centre Technologique En Aérospatiale C.T.A.
InventorsHenry E. Moore, Ranjit Pachha, Joseph J. Laux, John A. Ingram, Bruno Croteau-Labouly, Carl Ouellet, Alexandre Chagnon, Robin Dubé
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Abstract
A process for molding a hollow structure comprising the steps of: a. Forming a mandrel in a shape of a proposed cavity from a water-soluble substance capable of withstanding temperatures and pressures from a predetermined compression molding process; b. Positioning the mandrel in a suitable mold for forming an article which includes the mandrel within the article; and, c. Removing the mandrel by loosening and dissolving the mandrel with a water solution, thereby creating a cavity in the article.
Claims23
A process for molding a hollow structure comprising the steps of:
- a. Forming a mandrel in a shape of a proposed cavity from a water-soluble substance capable of withstanding temperatures and pressures from a predetermined compression molding process;
- b. Positioning the mandrel in a suitable mold for forming an article which includes the mandrel within the article;
- and,
- c. Removing the mandrel by loosening and dissolving the mandrel with a water solution, thereby creating a cavity in the article.
A process for compression molding of a hollow structure comprising the steps of:
- a. Forming a mandrel in a shape for forming a predetermined cavity a water-soluble substance comprising a mixture of sugar selected from the group of saccharose maltose, trehalose, starch and mixtures thereof and a group 1A metal and group 7A halogen containing salt material which is capable of withstanding temperatures of up to about 150° C. and pressures of up to about 3000 PSI compression molding process of from about;
- b. Positioning the mandrel between layers of thermoformable or thermosetable material in a suitable mold for forming an article which includes the mandrel within the article and compression molding the part including the mandrel;
- and,
- c. Removing the mandrel by loosening and dissolving the mandrel with a water solution, thereby creating a cavity in the article.
Dependencies are inferred from the claim text.