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A kind of low temperature preparation hot melt adhesive and its preparation method and a kind of adhesive tape

A hot-melt adhesive, low-temperature technology, used in adhesives, heat-activated films/sheets, non-polymer adhesive additives, etc. The effect of good performance

Active Publication Date: 2021-10-15
SHANGHAI YONGGUAN ADHESIVE PROD CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the existing adhesive tape can not meet the requirement of continuous high stickiness for more than 1 year

Method used

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  • A kind of low temperature preparation hot melt adhesive and its preparation method and a kind of adhesive tape
  • A kind of low temperature preparation hot melt adhesive and its preparation method and a kind of adhesive tape
  • A kind of low temperature preparation hot melt adhesive and its preparation method and a kind of adhesive tape

Examples

Experimental program
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Effect test

preparation example Construction

[0029] The invention provides a kind of preparation method of low-temperature preparation hot-melt adhesive, comprises the following steps:

[0030] Add synthetic rubber and additives to the feed port of the screw rubber machine, and after mixing in the first temperature zone, the second temperature zone and the third temperature zone, add naphthenic oil, and continue to process the fourth temperature zone, the fifth temperature zone temperature zone, the sixth temperature zone and the seventh temperature zone, and then add the resin, and then carry out the eighth temperature zone, the ninth temperature zone, the tenth temperature zone, the eleventh temperature zone, the twelfth temperature zone and the sixth temperature zone Mixing in thirteen temperature zones to obtain hot melt adhesives prepared at low temperature;

[0031] In terms of mass percentage, the raw material ratio for preparing the hot melt adhesive at low temperature is: 30-35% of synthetic rubber, 5-7% of addi...

Embodiment 1

[0055] like figure 1 Shown is the process flow diagram of the present embodiment, and concrete steps are as follows:

[0056] Set the temperature of the thirteen temperature zones of the screw rubber machine, specifically: the temperature of the first temperature zone is 30°C, the temperature of the second temperature zone is 110°C, the temperature of the third temperature zone is 120°C, and the fourth temperature zone The temperature in the temperature zone is 40°C, the temperature in the fifth temperature zone is 110°C, the temperature in the sixth temperature zone is 130°C, the temperature in the seventh temperature zone is 140°C, the temperature in the eighth temperature zone is 140°C, and the temperature in the ninth temperature zone is 140°C. The temperature in the temperature zone is 150°C, the temperature in the tenth temperature zone is 150°C, the temperature in the eleventh temperature zone is 155°C, the temperature in the twelfth temperature zone is 30°C, and the te...

Embodiment 2

[0069] Polyethylene particles are melted and coated on a 70-mesh cloth-based substrate (500m 2 ), the amount of coating is 87.5±2.5g / m 2 , and then use the anilox roll transfer method to coat the silicon solution on the surface of the film to obtain a 70-mesh cloth-based substrate with a good coating and silicon; wherein the silicon solution is a mixture of silicon and toluene in a ratio of 1:80 according to the mass ratio Obtained, the amount of silicon on the silicon is 1.25±2.5g / m 2 ;

[0070] Coat 60kg of the hot melt adhesive prepared at low temperature obtained in Example 1 on the 70-mesh cloth-based substrate coated with film and silicon according to two coating methods, wherein the amount of primer coating is 70g / m 2 , surface glue coating amount is 35g / m 2 , and then rewinding and cutting in turn to obtain 300 rolls of cloth tape with a width of 48mm and a length of 30m, and paste the sample number and use glue to identify.

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Abstract

The invention belongs to the technical field of hot-melt adhesives, and relates to a low-temperature prepared hot-melt adhesive, a preparation method thereof and an adhesive tape. The method for preparing hot-melt adhesive at low temperature provided by the invention uses synthetic rubber, additives, naphthenic oil and resin as raw materials, and obtains low-temperature hot-melt adhesive with high stickiness through ingenious design of feeding sequence and temperature setting in temperature zone , the experimental results show that when the hot melt adhesive prepared by the preparation method provided by the present invention is used to prepare adhesive tapes at low temperatures, the adhesive tapes obtained after being placed for 1 year still have a high holding force, which meets the requirement of continuous high holding viscosity for more than 1 year, and the adhesive tape The peel force is not affected, and the original good performance is still maintained.

Description

technical field [0001] The invention belongs to the technical field of hot-melt adhesives, and relates to a low-temperature prepared hot-melt adhesive, a preparation method thereof and an adhesive tape. Background technique [0002] Since the invention of adhesive tape, due to its convenience, people's production and life have been inseparable from it, and it is also widely used in some industries with relatively high requirements. However, in some applications with special requirements, the adhesive tape is required to maintain a good stickiness (about 1 to 2 years). At present, the holding force of general adhesive tape reaches its peak about 30 days after leaving the factory, and the holding time of the peak value will not be very high. The holding power will drop obviously in about 40 days. After 120 days, the holding power will generally drop to about 60% of the peak value, and after 180 days, the holding power will drop to about 20% of the peak value. It can be seen ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J153/02C09J157/02C09J193/00C09J191/00C09J11/04C09J11/06C09J7/35B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704C08K2003/2241C08L2205/025C08L2205/035C09J11/04C09J11/06C09J153/02C09J157/02C09J2400/263C09J2453/00C09J2491/00C09J2493/00C09J7/35C09J2301/122C09J2301/304C09J2301/408C08L91/00C08L93/00C08L57/02C08K3/22C08K5/1345
Inventor 柳友青
Owner SHANGHAI YONGGUAN ADHESIVE PROD CORP LTD
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