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Method and device for simultaneous coating and moulding of body

An object and coating technology, which is applied to the device, coating, metal material coating process, etc. for applying liquid to the surface, which can solve the problem of impossible to manufacture objects of any shape.

Inactive Publication Date: 2008-05-07
SCHOTT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the device known from WO 99 / 17334 is that only one hollow body can be produced per coating station
Another disadvantage is that with the device known from WO99 / 17334 it is not possible to manufacture objects of any shape

Method used

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  • Method and device for simultaneous coating and moulding of body
  • Method and device for simultaneous coating and moulding of body
  • Method and device for simultaneous coating and moulding of body

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Embodiment Construction

[0041] figure 1 A mold 1 of the invention is shown in , comprising two mold halves 1.1 and 1.2. In one embodiment of the invention, for plasma excitation, one half of the mold 1.1 is used as an anode and placed at ground potential 2, while the other half is used as a cathode, to which a high-frequency alternating electric field 3 can be applied.

[0042] In a first method step, the two mold halves 1 . 1 and 1 . 2 are assembled so that their upper regions 5 touch each other and form a channel 8 in the lower region 7 of the mold 1 . Injection material is injected therein, for example plastics such as polyethylene or the like. In order to avoid short circuits between the mold halves when an alternating voltage is applied to generate the plasma, an electrically insulating material, such as mica, quartz or polytetrafluoroethylene, is applied in the upper region 5 of the mold halves where the mold halves are in contact with each other (Teflon).

[0043] Injection material injecti...

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Abstract

The invention relates to a process and an apparatus for simultaneously coating and forming a body (11), comprising the following steps: two mold halves (1.1, 1.2) of a mold (1) for forming a molding (11) are moved together and brought into contact with one another, an injection-molding material is introduced into the mold halves (1.1, 1.2) so that a molding (11) is formed, the molding (11) is evacuated, a gas is admitted into the molding (11), the plasma in the molding (11) is ignited, so that a coating is deposited on the inner side of the molding (11), after the coating step has ended, the mold halves (1.1, 1.2) are moved apart so that the molding drops out.

Description

technical field [0001] The invention relates to a method and a device for coating and shaping objects and objects produced by the method or device. Background technique [0002] In order to reduce the penetration of gases and liquids in the field of plastic packaging and to protect the plastic against chemical attack or UV radiation, it is advantageous if the matrix material, in particular the three-dimensional hollow body, is provided with a coating, in particular a barrier coating. By means of the coating, the same properties can be achieved with inexpensive common plastics as in the case of expensive special plastics and can be used as a substitute for, for example, glass in the field of pharmaceutical packaging. The deposition of coatings on plastic substrates is known from the following applications: [0003] US 5 798 139 [0004] US 5 833 752 [0005] US 6 001 429 [0006] WO 99 / 17334 [0007] US 5,798,139 describes the manufacture of plastic containers with a car...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/24B29C49/06B29C49/24B29C45/17B29C45/00B05D7/22C23C16/44
CPCB05D7/227B29C2045/0079B29C45/0053B05D1/62B29C45/1703
Inventor 斯特凡·贝勒马库斯·库尔马滕·瓦尔特德特勒夫·沃尔夫马蒂亚斯·比克尔
Owner SCHOTT AG