High-strength plastic tray containing reinforced plastic framework insert

Abstract

The invention belongs to the technical field of trays and relates to a high-strength plastic tray containing a reinforced plastic framework insert. A layer of coating layer is formed through injection molding on the outer surface of the reinforced plastic framework insert which is formed through injection molding and adaptive to a tray bearing structure, and the high-strength plastic tray containing the reinforced plastic framework insert is formed. The hardness of the coating layer is smaller than the hardness of the reinforced plastic framework insert. The high-strength plastic tray has the advantages of being high in weight bearing capacity, high in strength, good in weather resistance, wide in application field, long in service life, low in cost, convenient to recycle and suitable for various types of bearing trays.

Description

technical field [0001] The invention belongs to the technical field of pallets, in particular to a high-strength plastic pallet containing reinforced plastic frame inserts. Background technique [0002] At present, plastic pallets are all made of ordinary plastics, which have sufficient strength and rigidity only in the temperature range of +40 to -25°C, and have anti-skid properties, which can ensure safe operation during transportation, loading and unloading, and stacking. It can only partially meet the general-level performance requirements of (road, railway, waterway, aviation) intermodal general-purpose flat pallets, and cannot meet its special-level performance requirements. Moreover, due to the limitation of the temperature range of use, it can only be used in suitable climate regions and fields. [0003] For plastic pallets with special grade performance requirements, there are currently two methods: [0004] 1: Increase the wall thickness of the plastic tray to im...

AI Technical Summary

Problems solved by technology

[0004] 1: Increase the wall thickness of the plastic tray to improve its mechanical and physical properties, but the thermal properties cannot meet the wide range of use

Moreover, due to the increase of wall thickness, the molding shrinkage increases, the pallet carrying pavement is easily deformed, and the load is not stable; the increase of wall thickness leads to an increase in the weight of the pallet, and the cost of the production system of the pallet increases significantly.

[0005] 2: Insert metal reinforcing components into the plastic tray to improve the local mechanical and physical properties of the tray's bearing surface, but the thermal performance still cannot meet the needs of large-scale use

In this way, it is necessary to reserve several vertical and horizontal insertion holes through the tray in the tray. After the tray is formed, the metal reinforcement components are manually knocked in, which is labor-intensive and time-consuming.

In addition, the through-hole and the metal reinforcement member have high matching precision requirements. If it is loose, the reinforcement effect is not obvious, but if it is tight, it will destroy the structural strength of the plastic. Part of the metal reinforcement member is exposed. Affected by rain and humid environments, the exposed part is in use. During the process, it will slowly rust, reduce the structural strength, and pose a potential safety hazard

During the process of carrying, transporting, loading and unloading, and stacking, this kind of pallet is affected by impact, drop, uneven load, etc., which will cause the inserted metal reinforcement components to bend and deform, and it is difficult to knock out when recycling, and manual stripping is even more laborious. The cost of recycling is also greatly increased

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