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Vacuum plastic sucking molding process and vacuum plastic sucking molding device for regenerated leather skins of automobile door panels

A technology of vacuum blister and regenerated leather, which is applied to household appliances, other household appliances, household components, etc. It can solve problems such as uneven deformation, damage, and wrinkles, so as to avoid uneven deformation, avoid local wrinkles, and solve stretching problems. The effect of poor strength and tear strength

Active Publication Date: 2016-08-24
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of poor mechanical properties of the regenerated leather skin of automobile door panels and uneven deformation, damage, and wrinkles in the vacuum blister forming process, the present invention optimizes the blister forming process and device to obtain a door panel interior skin with excellent mechanical properties and formability

Method used

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  • Vacuum plastic sucking molding process and vacuum plastic sucking molding device for regenerated leather skins of automobile door panels
  • Vacuum plastic sucking molding process and vacuum plastic sucking molding device for regenerated leather skins of automobile door panels
  • Vacuum plastic sucking molding process and vacuum plastic sucking molding device for regenerated leather skins of automobile door panels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Evenly mix 4080 fiber and kraft fiber in a certain proportion, wherein the mass fraction of 4080 fiber is 13%. Then the mixed fibers are carded into a web, and then the regenerated leather 101 is produced through 7 spunlace non-woven processes. The thickness of the prepared regenerated leather was kept at 1.2 mm.

[0056] (2) Select the male mold for vacuum forming, uncoil the reclaimed leather obtained in (1) and the 0.5mm thick PU film coil 102 of the prefabricated pattern at the unfolding station A at the same time, and transfer it to the heating station through the conveyor belt b.

[0057] (3) by figure 2 The heating unit 201 arranged in a matrix is ​​shown to conduct precise temperature control and heating on the regenerated leather sheet and the PU film. The temperature regulation is realized through the temperature control program 103 . Raise the overall temperature of the heating zone to 130°C, and adjust the temperature range to 130±20°C in areas with...

Embodiment 2

[0063] (1) Evenly mix N720 fiber and kraft fiber in a certain proportion, wherein the mass fraction of N720 fiber is 15%. Then the mixed fibers are air-laid into a six-pass needling process to produce regenerated leather 101 . The thickness of the prepared regenerated leather was kept at 1.2 mm.

[0064] (2) Select the male mold for vacuum blister forming, and unwind the regenerated leather obtained in (1) and the 0.3mm thick PU film roll material 102 of the prefabricated pattern at the unfolding station A simultaneously, wherein the PU film is positioned above the regenerated leather and Transfer to heating station B by conveyor belt.

[0065] (3) by figure 2 The matrix-arranged heating units shown in the figure conduct precise temperature-controlled heating on the regenerated leather preformed sheet. Each heating unit is composed of six heating sleeves 202 , and the temperature control is realized through the temperature control program 103 . Raise the overall temperatu...

Embodiment 3

[0071] (1) Evenly mix 4080 fiber and kraft fiber in a certain proportion, wherein the mass fraction of 4080 fiber is 17%. The uniformly mixed fibers are air-laid, and then subjected to six spunlace processes to obtain regenerated leather 101 .

[0072] (2) Vacuum forming with a female mold is selected, and the obtained regenerated leather sheet is compounded with a layer of thermoplastic PU film 102. The thickness of the PU film is about 0.5mm, and it is located under the regenerated leather sheet. The PU film does not need to be processed in advance. The rolled composite sheet is transported to the unfolding station A for uncoiling, in which the PU film is located under the regenerated leather, and is transported to the heating station B through the conveyor belt.

[0073] (3) The heating station composed of heating units 201 arranged in a matrix realizes precise temperature-controlled heating of the preformed sheet.

[0074] (4) The heated preformed sheet is transported to ...

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Abstract

The invention provides a vacuum plastic sucking molding process and a vacuum plastic sucking molding device for regenerated leather skins of automobile door panels. The vacuum plastic sucking molding process includes uniformly mixing thermoplastic synthetic fibers of skin-core structures and animal skin fibers with one another; manufacturing regenerated leather with mixed skin-core type thermoplastic synthetic fibers for the automobile door panels by the aid of non-weaving technologies. The vacuum plastic sucking molding process and the vacuum plastic sucking molding device have the advantages that the regenerated leather skins of the automobile door panels can be integrally molded via multiple stations including regenerated leather roll material spreading, accurate temperature-control heating, molded skin fixing and vacuum plastic sucking and regenerated leather waste recycling stations and the like by the aid of the vacuum plastic sucking molding device in vacuum plastic sucking molding procedures, and accordingly automobile door panel skins which are excellent in service performance and molding performance can be obtained; the process includes simple methods and is easy to implement and high in practicality.

Description

technical field [0001] The invention relates to the field of automobile interior decoration, in particular to a vacuum suction molding process and device for regenerated leather skins of automobile door panels. Background technique [0002] With the rapid development of the automobile industry and material technology, people put forward higher requirements for the beauty, comfort, safety and environmental protection of automobile interiors. At present, synthetic polymer materials such as polyvinyl chloride (PVC) and polyurethane (PU) are mainly used for the interior skin of automobile door panels, and it is difficult to realize the recycling and reuse of waste materials. Among them, the skin of PVC car door panels has poor anti-aging performance, and organic additives such as plasticizers are easy to volatilize at high temperatures, which poses hidden dangers to the health and safety of drivers and passengers. Although PU skin has excellent elasticity, toughness, aging resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C51/10B29C51/46B29L31/58
CPCB29C51/10B29C51/46B29L2031/58
Inventor 贾玉玺智杰颖赵亚如周勇
Owner SHANDONG UNIV
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