Pressing equipment adopted in method for making molded part and raw material mixture thereof

Abstract

The invention relates to pressing equipment adopted in a method for making a molded part and a raw material mixture thereof. A moldable mixture does not contain formaldehyde, a hardening agent, an impact-resistant modifier or a co-solvent, and has the characteristics of low water content and the like; the molded part produced through the method for making the molded part has high stretching viscosity and uniform density, and thermal treatment and fumigation are not required; through adoption of the molded part pressing equipment, automatic implementation of the method is realized, and labor force is reduced; and the pressing equipment has the characteristics of high speed and the like.

Description

technical field [0001] The invention relates to a molded product raw material mixture, a method for making the molded product and a pressing device for making the molded product, belonging to the field of crop waste recycling. Background technique [0002] The pallet is a flat transport structure made of wood, plastic, paper, metal and composite materials to support various items. At the same time, the pallet can facilitate the lifting and placement of the items. In addition, the pallet can be lowered during transportation. The vibration amplitude of the item improves the integrity rate of the item. [0003] Today, according to statistics, more than one billion pallets are manufactured in the world every year, of which 93% are directly made of wood. Due to the use of wood as its raw material, a large number of forests will be cut down every year, which is recognized as the cause of global change. One of the main factors of warming. According to the International Agency for...

AI Technical Summary

Problems solved by technology

[0008] Disadvantages of using large quantities of liquid binders to facilitate the flow of the moldable mixture during the molding process include: a) a high level of moisture vaporized during the molding process increases the pressure in the molding mixture while opening the mold due to The sudden release of pressure increases the risk of delamination of the molded product; b) the liquid adhesive has a high water content, which dilutes the concentration of the adhesive to a certain extent, which in turn leads to a longer molding time and requires a hardener. Accelerated hardening to ensure that the molded product is fully hardened in the mold before it is discharged; c) If it is not released in time, high pressure will be generated through the moisture / liquid vaporization process, which may cause the explosion of the mold. Therefore, the pressure discharge port must be Incorporated into the mold design, making the structure of the mold more complex; d) the molded products produced by this method usually quickly lead to mold, which makes the molded products warp; e) the excess moisture needs to be removed by repeated opening and closing of the mold / Steam escapes during molding

However, it is difficult to mold products with more complex contours if the moldable mixture contains materials that are difficult to flow in the molding cavity at low moisture content

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