Molded product and production method thereof

Abstract

The invention provides a molded product and a production method thereof. The molded product comprises a core part and a shell part at least partially wrapping the core part, and the core part is obtained through compression molding of a first mixture comprising 8-30 parts by weight of thermosetting resin and 70-92 parts by weight of straw powder having a first granularity; and the shell part is obtained through compression molding of a second mixture comprising 8-30 parts by weight of the thermosetting resin and 70-92 parts by weight of straw powder having a second granularity, wherein the first granularity is more than the second granularity. The method comprises the following steps: 1, respectively preparing the first mixture and the second mixture for the core part and the shell part; 2, sequentially adding the first mixture and the second mixture into the cavity of a die, and allowing the first mixture to be at least partially wrapped with the second mixture; and 3, carrying out compression molding in the die cavity in an airtight and sealed state. The molded product and the production method thereof have the advantage of low manufacturing cost.

Description

technical field [0001] The present invention relates to a molded product and a preparation method thereof, in particular to a toilet lid molded from a mixture comprising straw powder and a thermosetting resin and a preparation method thereof. Background technique [0002] Existing toilet lid (return lid and seat ring) adopt following material and preparation method usually: a, the injection molding of thermoplastic resins such as ABS, polypropylene, polystyrene; molding); c, machining the MDF to the desired shape; d, mixing wood powder with urea-formaldehyde resin or phenolic resin and then molding. [0003] In molded wood toilet seats waste wood from wood mills is used in most cases to provide the cellulose, but raw wood is also used in some cases. MDF, which is used to make toilet lids and other products, is primarily made from raw wood rather than waste wood from lumber mills. In addition, some artificial panels disclosed in patent documents use straw such as wheat or r...

AI Technical Summary

Problems solved by technology

This open molding method has the disadvantages of long resin curing reaction time and high energy consumption for mold heating.

[0008] In addition, the wood-based panels disclosed in the above-mentioned patent documents are all made of a single mixture. In order to meet the requirements for their apparent performance, the straw powder is generally required to have a finer particle size, and the finer the particle size of the straw powder, the lower the manufacturing cost. The higher the result, the higher the manufacturing cost of the product

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