Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Biodegradable express bag sealing pressure-sensitive adhesive and preparation method thereof

A technology of pressure-sensitive adhesive and bag sealing, which is applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., and can solve problems such as pollution, waste of resources, and atmospheric environment

Pending Publication Date: 2022-04-12
SHANGHAI CHANGFA NEW MATERIAL CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, like non-degradable courier bags, because they are difficult to degrade, they can only be disposed of by incineration, which not only wastes resources but also pollutes the atmospheric environment.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Biodegradable express bag sealing pressure-sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 80 parts of aliphatic polyester adhesive into the reaction kettle, stir and heat up to 180°C under the protection of nitrogen, and the stirring speed is 50 rpm. After the materials in the kettle are completely melted, add 10 parts of hydrogenated rosin and 10 parts of Carbonic acid powder (800 mesh); stop nitrogen, turn on the vacuum pump to evacuate, the vacuum is maintained below 0.01Mpa, the stirring speed is adjusted to 80 rpm, after uniform mixing, heat preservation and pressure holding for 30 minutes; reduce the temperature of the system, when the temperature drops When the temperature is below 120°C, turn off the vacuum pump, slowly return the system pressure to normal pressure, and discharge the material to obtain a semi-solid white opaque express bag sealing adhesive product with an acid value of 23mg KOH / g, a hydroxyl value of 86mg KOH / g, and an initial viscosity of It is 20#.

Embodiment 2

[0035] Add 80 parts of aliphatic polyester adhesive into the reaction kettle, stir and heat up to 180°C under the protection of nitrogen, and the stirring speed is 50 rpm. After the materials in the kettle are completely melted, add 5 parts of terpene resin and 15 parts of carbon dioxide powder (1200 mesh); stop feeding nitrogen, turn on the vacuum pump to evacuate, the vacuum degree is maintained below 0.01Mpa, the stirring speed is adjusted to 80 rpm, after uniform mixing, heat preservation and pressure holding for 30 minutes; When the temperature drops below 120°C, turn off the vacuum pump, slowly restore the system pressure to normal pressure, and discharge the material to obtain a semi-solid light yellow opaque express bag sealing glue product with an acid value of 68 mg KOH / g and a hydroxyl value of 102 mg KOH / g. The viscosity is 18#.

Embodiment 3

[0037] Add 80 parts of aliphatic polyester adhesive into the reaction kettle, stir and heat up to 180°C under the protection of nitrogen, and the stirring speed is 50 rpm. After the materials in the kettle are completely melted, add 5 parts of terpene resin, 5 parts rosin glyceride and 10 parts of talcum powder (1200 mesh); stop nitrogen, turn on the vacuum pump to vacuum, the vacuum is maintained below 0.01Mpa, the stirring speed is adjusted to 80 rpm, after uniform mixing, heat preservation and pressure holding for 30 minutes ; reduce the temperature of the system, when the temperature drops below 120 ° C, turn off the vacuum pump, make the system pressure slowly return to normal pressure, discharge, and obtain the semi-solid light yellow opaque express bag sealing glue product, the acid value is 54mg KOH / g, the hydroxyl value It is 116mg KOH / g, and the initial viscosity is 19#.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
hydroxyl valueaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
Login to View More

Abstract

The invention relates to a biodegradable express bag sealing pressure-sensitive adhesive and a preparation method thereof. The biodegradable express bag sealing pressure-sensitive adhesive is prepared from an aliphatic polyester adhesive, tackifying resin and an inorganic filler according to a certain proportion. The preparation method comprises the following steps: adding an aliphatic polyester adhesive into a reaction kettle, heating to 140-200 DEG C in an N2 atmosphere, and stirring until the aliphatic polyester adhesive is molten; the preparation method comprises the following steps: adding a certain proportion of tackifying resin and inorganic filler, vacuumizing to 0.01-0.05 Mpa, uniformly mixing reactants, preserving heat for 20-60 minutes, cooling to 80-120 DEG C, and discharging glue. The plastic express bag sealing device can be used for sealing a plastic express bag, and articles in the bag can be taken out only by tearing the express bag after the plastic express bag is pressed and sealed. The biodegradable aliphatic polyester adhesive is used as a main body material, can be easily degraded under the catalysis of enzyme secreted by microorganisms in the natural environment, and is an environment-friendly novel material.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a preparation method of an organic-inorganic polymer composite material, in particular to a biodegradable express bag sealing pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the Internet and the Internet of Things industry, online shopping has become an indispensable way of consumption in people's production and life. Therefore, the rapid development of the express delivery industry also complies with the requirements of the times. Courier bags are widely used because of their advantages of cheapness, portability, and large capacity. However, it also brings many problems such as waste of resources and environmental pollution. This is why countries around the world are reconsidering whether to allow the use of express bags. In order to solve this problem, various degradable courier bags have b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J167/02C09J11/04
Inventor 施晓旦王冠南尹东华
Owner SHANGHAI CHANGFA NEW MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com