Sulfur dioxide fresh-keeping laminate, preparation method and application

A technology of sulfur dioxide and laminates, which is applied in chemical instruments and methods, applications, and preservation of fruits and vegetables. Complicated and other issues, to achieve easy quality control, low production cost, and good fresh-keeping effect

Inactive Publication Date: 2019-11-15
山东营养源食品科技有限公司
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Grape fresh-keeping sheets (Chinese patent CN200410036500), grape fresh-keeping powder, and sulfur dioxide fresh-keeping pads filled with sodium pyrosulfite in a grid shape cannot meet high-speed and high-efficiency production due to the limitation of equipment production efficiency.
The sulfur dioxide fresh-keeping mat prepared by coating composite method has relatively advanced technology, but its coating agent preparation, coating process and equipment are relatively complicated, and the investment in environmental protection equipment and production equipment is relatively large.

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
  • Sulfur dioxide fresh-keeping laminate, preparation method and application
  • Sulfur dioxide fresh-keeping laminate, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] In this embodiment, the laminate and the contrast laminate all adopt the following raw materials: the first substrate: non-woven fabric, 40g / square meter; the second substrate: paper-plastic composite film, 45g / square meter; adhesive: EVA Rubber powder; sulfur dioxide release agent: sodium metabisulfite.

[0063] In all the laminates in this example, the mixed addition amount of adhesive and sulfur dioxide releasing agent is 40g / square meter.

[0064] The preparation method of all laminates in this example is as follows:

[0065] A, prepare described first base material and second base material;

[0066] B, prepare described adhesive;

[0067] C, prepare described sulfur dioxide releasing agent, raw material is used after pulverizing, crossing 50 mesh sieves;

[0068] D, the binding agent and the sulfur dioxide releasing agent are mixed evenly according to the ratio to form a mixture;

[0069] E. Spread the mixture prepared in step D evenly on the first base materia...

Embodiment 2

[0087] The composition of Laminate 2 is:

[0088] The first substrate: non-woven fabric, 35g / square meter; the second substrate: absorbent paper, 42g / square meter;

[0089] Binder: TPU rubber powder; Sulfur dioxide release agent: sodium metabisulfite and potassium metabisulfite, the mass ratio is 1:1;

[0090] The mass ratio of the adhesive to the sulfur dioxide releasing agent is 5:1, and the amount of the mixture of the adhesive and the sulfur dioxide releasing agent added to the laminate is 60 g / square meter.

[0091] The amount of the sulfur dioxide releasing agent of the laminate is 6.24g / square meter as sulfur dioxide, and the mass per unit area of ​​the laminate is 137g / square meter.

[0092] Preparation method of laminate 2:

[0093] A, prepare described first base material and second base material;

[0094] B, prepare described adhesive;

[0095] C, prepare described sulfur dioxide releasing agent, after mixing, raw material is used after pulverizing, crossing 60 ...

Embodiment 3

[0100] The composition of laminate 3 is:

[0101] The first substrate: non-woven fabric, 35g / square meter; the second substrate: polyester film, 15g / square meter;

[0102] Adhesive: LDPE rubber powder and EVA rubber powder, the mass ratio of the two is 1:1; sulfur dioxide release agent: sodium metabisulfite and sodium bisulfite, the mass ratio of the two is 4:1;

[0103] The mass ratio of the adhesive to the sulfur dioxide releasing agent is 1:5, and the addition amount of the mixture of the adhesive and the sulfur dioxide releasing agent in the laminate is 30 g / square meter.

[0104] The amount of the sulfur dioxide releasing agent of the laminate is 16.53 g / square meter as sulfur dioxide, and the mass per unit area of ​​the laminate is 80 g / square meter.

[0105] Preparation method of laminate 3:

[0106] A, prepare described first base material and second base material;

[0107] B, prepare described adhesive;

[0108] C, prepare described sulfur dioxide releasing agent,...

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
softening pointaaaaaaaaaa
particle size (mesh)aaaaaaaaaa
softening pointaaaaaaaaaa
Login to view more

Abstract

The invention provides a sulfur dioxide fresh-keeping laminate. The laminate at least comprises a first base material, a second base material, an adhesive and a sulfur dioxide releasing agent, whereina mixture of the adhesive and the sulfur dioxide releasing agent is uniformly distributed between the first base material and the second base material, the first base material and the second base material tightly adhere to each other under the action of the adhesive through heating and pressurizing, and the sulfur dioxide releasing agent tightly adheres to the adhesive through heating and pressurizing; the first base material is a breathable material; the sulfur dioxide releasing agent comprises one or more of sodium pyrosulfite, potassium metabisulfite, sodium hydrogen sulfite and potassiumhydrogen sulfite; the amount of sulfur dioxide in the laminate is 3-40 g per square meter. The laminate has is simple in process, the quality is easy to control, continuous production can be achieved,the production efficiency is high, the labor consumption is low, and the production cost is low.

Description

technical field [0001] The invention relates to the technical field of fruit preservation, and more specifically, relates to a sulfur dioxide preservation layer, a preparation method, and an application for fruit preservation. Background technique [0002] Grape is one of the important fruit varieties in my country and is deeply loved by the people. According to statistics, by the end of 2015, China's grape cultivation area was close to 12 million mu, with an output of 13.669 million tons. Since 2011, the production of table grapes has ranked first in the world, and since 2014, the grape cultivation area has jumped to the second place in the world. , wine production ranks eighth in the world, China has become the world's largest producer of grapes. According to statistics, due to the impact of post-harvest transportation and preservation factors, the loss of grapes after harvest is as high as 15% to 25%. [0003] At present, sulfur dioxide is widely used as a grape preserv...

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): A23B7/152B32B5/02B32B29/02B32B27/12B32B7/12B32B33/00B32B37/06B32B37/10B32B37/12B32B27/08B32B27/06B32B27/36B32B29/00B32B27/10B32B27/32
CPCA23B7/152B32B5/022B32B29/02B32B27/12B32B7/12B32B33/00B32B37/06B32B37/10B32B37/12B32B27/08B32B27/36B32B29/005B32B27/10B32B27/32A23V2002/00
Inventor 王庆国牟文良晏惠陈涛
Owner 山东营养源食品科技有限公司
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap