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Plastic foam products consisting of beads and mfg. method thereof

A technology of foam plastics and products, which is applied in the field of foam plastic products, can solve problems such as disturbing noise, achieve the effect of shortening cycle time and improving cycle time

Inactive Publication Date: 2005-10-26
伊佐博洛有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Another problem in cars is annoying noise

Method used

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  • Plastic foam products consisting of beads and mfg. method thereof
  • Plastic foam products consisting of beads and mfg. method thereof
  • Plastic foam products consisting of beads and mfg. method thereof

Examples

Experimental program
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Embodiment Construction

[0038] figure 1 The shape of an automatic molding machine is shown, comprising a lower part 1 and an upper part 7, and a seal 10 arranged on the edge between them. A wire fabric layer 5 is arranged on the lower part 1 .

[0039] After the mold is closed, a valve 3 is opened and a negative pressure is applied to the mold cavity through a pipe 2, which negative pressure is generated by pumping out the air in the mold cavity.

[0040] Simultaneously, a valve 9 is opened, and pressurized air is introduced through a pipe 8 . Material bead 6 is fed into mold cavity together with compressed air, and the diameter of material bead is 3 millimeters, is made of polypropylene. The air pressure is 6 bar.

[0041]The compressed air flows out through the fabric layer 5 . The fabric layer 5 optimally receives the compressed air and directs it to the opening 4 in the lower part 1 . The fabric layer 5 is double-layered and made of wire fabric. Each layer has a different mesh size. The me...

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Abstract

According to the invention, the production of plastic foam products consisting of beads comprises the molding of pimples in an automatic molding machine. Said pimples reduce the noise that is produced when the product is subjected to friction.

Description

technical field [0001] The present invention relates to a foamed plastic product made from beads. Beads are small sized particles of foam material. Various plastic materials such as polystyrene (PS), polyethylene (PE) or polypropylene (PP) can be used here. The beads can be spherical or other shapes. The shape of the beads is partly determined by the method of production. Regardless of the shape of the bead, the diameter of the bead is generally used as a sign to determine the size of the bead. Typically the beads have a diameter of 0.5 to 6 mm. This does not exclude smaller or larger beads. Background technique [0002] The main difference in bead production is whether to use an autoclave or an extruder. After the beads are produced, they are stored in silos or in a suitable manner until they are used. [0003] In a mold, a so-called automatic molding machine, the beads are connected to each other. This is done by heating the surface of the bead to cause a certain d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R13/02B29C44/00B29C44/34B29C44/44B29K101/12B60J5/00C08J9/24
CPCB29C44/588B29C44/445Y10T428/249953B29C44/3426
Inventor J·布鲁宁
Owner 伊佐博洛有限责任公司
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