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Conjugation method for resin molding product

A resin molding and joining method technology, which is applied in the joining field of resin molded products, can solve problems such as unstable creep failure life, achieve the effects of preventing defects such as residual voids, stable creep failure life, and easy implementation

Active Publication Date: 2014-04-09
POLYPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, resin products joined by hot plate welding have a problem of unstable creep failure life

Method used

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  • Conjugation method for resin molding product
  • Conjugation method for resin molding product
  • Conjugation method for resin molding product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0096] Joining preparation process

[0097] Using polyacetal ("DURACONM90-44" manufactured by Polyplastics Co., Ltd.) as the resin material, injection molding was performed under the following molding conditions to produce Figure 4 The resin test piece shown in (a).

[0098] Molding conditions

[0099] Molding machine: ROBOSHOTα-50C (manufactured by FANUC LTD.)

[0100] Barrel temperature: (nozzle) 200°C-200°C-180°C-160°C (hopper)

[0101] Injection speed: 10mm / s

[0102] Holding pressure: 60MPa

[0103] Injection time + holding time: 15 seconds

[0104] Cooldown: 10 seconds

[0105] Screw speed: 100rpm

[0106] Screw back pressure: 4MPa

[0107] Mold temperature: 80°C

[0108] The above two resin test pieces were mounted on a hot plate welding device ("PW-1" manufactured by Nakamori Kogyo Co., Ltd.). The schematic diagram of the hot plate welding device is as follows: Figure 5 shown. also, Figure 5 It shows the hot plate welding device in the formation of ...

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Abstract

A joint method for resin molding product is provided which can stabilize the creep deformation destroy life of the resin conjugant melt with two resin molding product. This invention conjugates the resin with the method having the following characteristics: Heat the predetermined melting parts of two resin molding product. Compress said melting layers of two resin molding product with each other to melt and conjugate, and the applied force is in the range of 0-10MPa (5MPa is preferred), the minimum thickness of the conjugation part is bellow 100mum.

Description

technical field [0001] The present invention relates to a joining method of a resin molded product in which two meltable resin molded products are welded together. Background technique [0002] Resin molded products are used in various fields because they are not corroded like metal and wood, and are inexpensive and lightweight. In addition, most of the resin molded products are formed of thermoplastic resins in order to save the earth's resources through recycling. In addition, since various molding methods such as compression molding, transfer molding, injection molding, extrusion molding, and blow molding can be used, as well as advances in molding machines and mold structures, resin molded products with complex shapes can be easily molded . [0003] However, it may be difficult to manufacture molded products with complex shapes by one-time molding. In addition, a part of the molded product often needs to be formed of different types of resins. In this case, a plurali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C65/02B29K101/12B29K59/00
Inventor 岸野直史加田雅博
Owner POLYPLASTICS CO LTD
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