Extrusion die for composite sheet material formed through co-extrusion molding of wood plastic, foaming layer and metal section material

A technology for extruding molds and metal profiles, applied in the field of extrusion molds for composite sheets, can solve problems such as inability to produce metal profile composite sheets, and achieve the effects of eliminating potential safety hazards, reducing negative impacts, and enhancing thermal insulation performance.

Active Publication Date: 2016-03-30
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this extrusion die can only produce wood-plastic profiles, but cannot produce composite panels in which metal profiles, foam layers and wood-plastic composites are integrated.

Method used

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  • Extrusion die for composite sheet material formed through co-extrusion molding of wood plastic, foaming layer and metal section material
  • Extrusion die for composite sheet material formed through co-extrusion molding of wood plastic, foaming layer and metal section material
  • Extrusion die for composite sheet material formed through co-extrusion molding of wood plastic, foaming layer and metal section material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Weigh raw materials:

[0042] Weigh the raw materials of wood-plastic frame 1: 40 parts by weight of polyvinyl chloride, 35 parts by weight of wood powder (wood powder, aspect ratio less than 40:1, particle diameter less than 1mm), 2.6 parts by weight of foaming agent, 10 parts by weight of inorganic filler Parts by weight, 8 parts by weight of impact modifier, 2 parts by weight of lubricant, 2 parts by weight of stabilizer, 2 parts by weight of compatibilizer, and 1 part by weight of processing aid.

[0043]Raw materials of the foam inner layer: 70 parts by weight of polystyrene, 10 parts by weight of flame retardant, 5 parts by weight of cell regulator, 3 parts by weight of modifier, 1 part by weight of processing aid and 5 parts by weight of chemical blowing agent , 6 parts by weight of inorganic reinforcing agent.

[0044] (2) Manufacturing process:

[0045] Firstly, prefabricate the perforated plate structure on the surface of metal plates such as steel plate...

Embodiment 2

[0071] This embodiment produces as Figure 8 The preparation method and raw materials of the composite plate shown are basically the same as those in Example 1. The difference is that: using Figure 7 Extrusion die shown and as Figure 9 metal profiles shown. Figure 7 The metal profile 2 with figure 1 The position of the metal profile 2 in the composite panel is different, and the web of the metal profile 2 is bonded to the outer layer of the composite panel (the inner wall close to the surface of the composite panel) of the composite panel. and figure 1 The cross-sections at the same cutting position are basically the same, with only some differences in size.

[0072] Extrusion die: Figure 7 Dies shown can be fabricated Figure 8 Composite panels as shown, such as Figure 7 As shown, the extrusion die 3 includes a first core 34 and three second cores 32 .

[0073] The first core 34 is provided with an external shape that matches the semi-open metal profile 2. When ...

Embodiment 3

[0080] produce as Figure 10 Shown composite plate, its preparation method and raw material are basically the same as embodiment 2, difference is:

[0081] Extrusion die: the extrusion die 3 is only provided with the first core 34, and the second core 32 is not provided. The first core 34 is provided with an external shape that matches the semi-open metal profile 2, so that when the opening When the shaped metal profile 2 passes through the cavity 33, the open-shaped metal profile 2 is half-enclosed on the outside of the first mold core 34, and the metal profile 2 sent into the cavity 33 is entangled with the first core 34 to form a closed entity. . A gap for injecting molten wood-plastic material is provided between the airtight entity and the mold body 31. After the molten wood-plastic material enters the gap, a wood-plastic frame 1 of a composite plate is formed on the periphery of the sealed entity. After cooling and molding, the composite The board has only one specific...

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Abstract

The invention provides an extrusion die for a composite sheet material formed through co-extrusion molding of wood plastic, a foaming layer and a metal section material. The die comprises a die body and a first die core, the first die core is arranged in a cavity formed in the die body, the metal section material is an opened metal section material; the first die core possesses an appearance structure matched with the opened metal section material, and can form a sealed solid body together with the metal section material sent into the cavity through cooperation, and a gap for injecting the fused wood plastic material is reserved between the sealed solid body and the die body; and the extrusion die is provided with a flow channel, and the flow channel successively passes through the die body, the cavity and the first die core and reaches the extrusion end of the die. The extrusion die in the embodiment is capable of producing the composite sheet material which is a composite integral body formed by wood plastic, the metal section material and the foaming layer.

Description

technical field [0001] The invention relates to a mold, in particular to an extrusion mold for a composite board formed by co-extrusion of wood plastic, a foam layer and a metal profile. Background technique [0002] Solid clay bricks are often used for traditional building walls, which is not conducive to the protection of cultivated land; at present, wall materials such as aerated concrete blocks and hollow bricks need to be constructed on site, requiring cement wet work, generating a lot of construction waste on site and consuming a lot of labor. , The dimensional accuracy of the wall is also difficult to control, and the construction period is long, ranging from more than half a year to more than one year or even more than two years to complete. [0003] Chinese patent CN202915032U provides a wood-plastic profile and its extrusion die. A slot hole is arranged at the central position, and one end of the slot hole has a circular arc structure. The extrusion die includes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/02B29C47/06B29C47/14B29C48/305
Inventor 赵永生
Owner BEIJING NEW BUILDING MATERIALS PLC
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