Unlock instant, AI-driven research and patent intelligence for your innovation.

Weather-resistant food bag and preparation method thereof

A food bag, weather resistance technology, used in textiles and papermaking, fiber raw material processing, paper coatings, etc., can solve problems such as poor weather resistance

Active Publication Date: 2016-10-05
TONGLING FOUNDER PLASTICS TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although paper food bags have excellent degradability, the weather resistance of paper food bags is poor. At present, it is only necessary to paint the surface of paper food bags to improve their weather resistance, but the current coatings can only be used for them. It is difficult to improve the weather resistance of one or less items, so that it is difficult to make paper food bags have the characteristics of high temperature resistance, low temperature resistance, acid resistance, alkali resistance and oil resistance at the same time

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

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] The invention provides a preparation method of a weather-resistant food bag, comprising:

[0015] 1) contacting titanate, urushiol and epoxy resin to obtain modified urushiolphthalein resin;

[0016] 2) Mix the modified urushiolphthalein resin, epoxy resin, spider silk, expanded vermiculite, flue ash, lanolin, dimethylethanolamine, microcapsule curing agent, filler, organic solvent and dispersant to prepare a weather-resistant coating ;

[0017] 3) the weather-resistant coating is painted on the surface of the paper bag to obtain a weather-resistant food bag;

[0018] Wherein, the capsule core of the microcapsule curing agent is diaminodiphenylmethane, and the wall material is 2,2-toluene diisocyanate.

[0019] In step 1) of the present invention, the amount of each substance can be selected in a wide range, but in order to make the modified urushiolphthalein resin have a more excellent yield, preferably, in step 1), relative to 1 weight part The amount of urushiol, ...

preparation example 1

[0036] a. At 25°C, diaminodiphenylmethane and 2,2-toluene diisocyanate are dispersed in tetrachlorotoluene, and then an aqueous gelatin solution (the content of gelatin is 1% by weight) is added and mixed for 1 h to obtain an emulsion; two The weight ratio of aminodiphenylmethane, 2,2-toluene diisocyanate, tetrachlorotoluene and aqueous gelatin solution is 1:1:65:6.

[0037] b. At 25°C, the emulsion is mixed with an aqueous solution of sodium dodecylbenzenesulfonate (the content of sodium dodecylbenzenesulfonate is 1% by weight), followed by heat treatment at 45°C for 5h to obtain solidified microcapsules Agent D1; wherein, the mass ratio of the emulsion to the sodium dodecylbenzenesulfonate aqueous solution is 100:165.

preparation example 2

[0039] a. At 25°C, diaminodiphenylmethane and 2,2-toluene diisocyanate are dispersed in tetrachlorotoluene, and then an aqueous gelatin solution (the content of gelatin is 0.5% by weight) is added and mixed for 1 h to obtain an emulsion; two The weight ratio of aminodiphenylmethane, 2,2-toluene diisocyanate, tetrachlorotoluene and aqueous gelatin solution is 1:0.5:50:4.

[0040] b. At 25°C, the emulsion is mixed with an aqueous solution of sodium dodecylbenzenesulfonate (the content of sodium dodecylbenzenesulfonate is 0.8% by weight), followed by heat treatment at 40°C for 4h to obtain solidified microcapsules Agent D2; wherein, the mass ratio of the emulsion to the sodium dodecylbenzenesulfonate aqueous solution is 100:150.

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
epoxy equivalentaaaaaaaaaa
epoxy equivalentaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a weather-resistance food bag and a preparation method thereof. The method comprises the following steps: (1) carrying out contact reaction on titanate, urushiol and epoxy resin so as to obtain a modified urushiol titanate resin; (2) mixing the modified urushiol titanate resin, epoxy resin, nephila silk, expanded vermiculite, flue dust, wool fat, dimethylethanolamine, a microcapsule-type curing agent, filler, an organic solvent and a dispersing agent to obtain weather-resistance coating, wherein the capsule core of the microcapsule-type curing agent is made from diaminodiphenyl-methane and a wall material of the microcapsule-type curing agent is made from 2,2-toluene diisocyanate; and (3) brushing the surface of a paper bag with the weather-resistance coating to obtain the weather-resistance food bag. The weather-resistance food bag prepared by using the method has the advantages of excellent high-temperature resistance, low-temperature resistance and corrosion resistance.

Description

technical field [0001] The present invention relates to coatings, in particular, to a weather-resistant food bag and a preparation method thereof. Background technique [0002] Food bags, as the name suggests, are bags for food, a small bag, which brings great convenience to human life. Food bags can be divided into plastic food bags and paper food bags according to the material classification. Plastic food bags are widely used because of their waterproof, high mechanical strength and light weight, but plastic food bags are easy to cause environmental pollution and their usage is gradually increasing. At the same time, the plastic food bags are easily deformed in the process of containing high-temperature food, and the additives in the food bags are easily decomposed and cause contamination to the food. In view of the defects of plastic food bags, the use of paper food bags is gradually increasing. [0003] Although the paper food bag has excellent degradability, the weath...

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 Patents(China)
IPC IPC(8): D21H19/14D21H19/44
Inventor 陈可夏陈可亮
Owner TONGLING FOUNDER PLASTICS TECH