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Method of no conglutination for packing blocky heat-molten contact adhesive

A technology of hot-melt pressure-sensitive adhesive and packaging method, which is applied to the non-adhesive packaging of block hot-melt pressure-sensitive adhesive in a viscous state, in the field of normal temperature, and can solve the problems of poor compatibility between film and hot-melt pressure-sensitive adhesive, sizing pipeline and Nozzle blockage, inconvenient production and use, etc., to achieve performance assurance, low packaging cost, and good compatibility

Inactive Publication Date: 2005-11-16
广州慧达精细化工有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantages of this packaging method are: low packaging efficiency, labor-intensive, inconvenient production and use, and pollution
This is a relatively advanced packaging method, but it still has the disadvantages of poor compatibility between the film and the hot-melt pressure-sensitive adhesive, and it is easy to cause blockage of the sizing pipeline and the nozzle during use.

Method used

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  • Method of no conglutination for packing blocky heat-molten contact adhesive

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Experimental program
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Embodiment Construction

[0016] The non-adhesive packaging method of block hot-melt pressure-sensitive adhesive has the following process steps:

[0017] 1) Prepare a liquid hot-melt pressure-sensitive adhesive in the mixing kettle 1, and prepare an anti-sticking coating in the coating kettle 11. Anti-stick coatings are paraffin wax, polyethylene wax, synthetic wax, modified polyethylene wax, polyamide wax, stearamide wax, ethylene-vinyl acetate copolymer, polyethylene, thermoplastic rubber, ethylene-methyl acrylate copolymer , ethylene-butyl acrylate copolymer, and one or more mixtures of high softening point tackifying resin raw materials. The thickness of the release coating is calculated as 0.05%-2% by weight percentage of the packaged hot-melt pressure-sensitive adhesive.

[0018] 2) Send the melted hot-melt pressure-sensitive adhesive from the mixing kettle 1 into the screw extruder 2 with a temperature control device 23 . And the release coating is sent into the mold cavity 31 of the release ...

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Abstract

A non-adhesive packing method for the hot-fusible pressure-sensitive adhesive block includes such steps as fusing, extruding out which coating an antisticking film layer on its surface, cooling, and cutting to obtain quasi-cylindrical solid blocks.

Description

technical field [0001] The invention relates to the technical field of colloidal material packaging, in particular to a non-adhesive packaging method for block hot-melt pressure-sensitive adhesives at normal temperature and in a viscous state. Background technique [0002] Hot-melt pressure-sensitive adhesive needs to be heated and melted before coating and construction, but it is a viscous solid at room temperature, so it needs to be packaged in anti-sticking packaging to meet the needs of storage, handling and convenient feeding during construction. The common molding and packaging methods of hot-melt pressure-sensitive adhesives are as follows: ① Directly inject the hot-melt pressure-sensitive adhesive melt into a box made of anti-sticking paper or an iron box or plastic box coated with anti-sticking agent. The hot melt pressure sensitive adhesive comes out of these boxes cleanly after cooling. The disadvantages of this packaging method are: low packaging efficiency, lab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B11/02
Inventor 王建峰吴永升
Owner 广州慧达精细化工有限公司
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