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

Physical foaming lightweight sheet and preparation method thereof

A technology of physical foaming and physical foaming agent, applied in the field of plastic products, can solve the problems of heavy sheet material, unfavorable sheet material processing and use, etc., and achieve the effects of expanding the scope of use, reducing weight, and reducing costs

Inactive Publication Date: 2021-09-17
USEON NANJING EXTRUSION MACHINERY CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that the processing of the sheet in the blister process is usually integrally formed, resulting in a large weight of the sheet, which is not conducive to the subsequent processing and use of the sheet

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
  • Physical foaming lightweight sheet and preparation method thereof
  • Physical foaming lightweight sheet and preparation method thereof
  • Physical foaming lightweight sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as figure 1 As shown, a physical foaming lightweight sheet, the material of the sheet is polyethylene terephthalate, the sheet includes a middle layer 11 and side layers 12, and the side layers 12 are located on both sides of the middle layer 11 , and in the present embodiment, the thickness of the middle layer 11 is 1 mm, the thickness of the two side layers is 0.143 mm, and the ratio of the thickness of the middle layer 11 to the total thickness of the side layers 12 on both sides is 3.5. Simultaneously, some closed microbubbles 2 are arranged in the middle layer 11, the pore diameter of the microbubbles 2 is 0.05-0.07 microns, the expansion ratio of the sheet is 1.05, and the cell density is 10. 16 piece / cm3.

[0052] Embodiment 1 of the present application also discloses an inflating device.

[0053] Such as figure 2 with image 3 As shown, the inflating device 3 in this embodiment is used in conjunction with the extruder. The inflating device 3 includes a...

Embodiment 2-11

[0072] The difference between Examples 2-11 and Example 1 lies in that the expansion ratio of the sheet, the diameter of microbubbles 2 and the cell density of the sheet are different, see the table below for details.

[0073] Table 1

[0074]

Embodiment 12-15

[0076] The difference between Examples 12-15 and Example 1 is that the ratio of the thickness of the middle layer 11 to the total thickness of the side layers 12 on both sides is different, see the table below for details.

[0077]

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
pore sizeaaaaaaaaaa
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a physical foaming lightweight sheet and a preparation method thereof. The sheet comprises a sheet body, wherein the sheet body comprises a middle layer and side layers, the side layers are located on the two sides of the middle layer, and a plurality of microbubbles are arranged in the middle layer. The preparation method comprises the following steps: S1, melting raw materials: melting a middle layer material, and melting a side layer material; S2, after the middle melt is plasticized, injecting a physical foaming agent into the middle to obtain a melt containing the foaming agent; and S3, forming: introducing the side melt and the melt containing the foaming agent into a forming mold so as to position the side melt on the two sides of the melt containing the foaming agent, and carrying out mold stripping to obtain the lightweight sheet. According to the invention, the weight of the sheet can be effectively reduced, and follow-up machining and using of the sheet are facilitated.

Description

technical field [0001] The present application relates to the field of plastic products, in particular to a physically foamed lightweight sheet and a preparation method thereof. Background technique [0002] As a common processing technology for plastics, blister is widely used in the production of packaging materials such as electronics, electrical appliances, food, cosmetics, and stationery. The main principle of blistering is to heat the flat hard plastic sheet to soften it, then use vacuum to absorb it on the surface of the mold, and then mold it to obtain the corresponding plastic product after cooling. [0003] Blister packaging products mainly include blisters, trays, blister boxes, etc. Blister packaging not only has the advantages of saving raw and auxiliary materials, light weight, convenient transportation, and sealing performance, but also meets the requirements of environmentally friendly green packaging. [0004] Regarding the related technologies mentioned ab...

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): B32B27/36B32B27/06C08J9/12C08L67/02C08K3/04C08J5/18B29C44/24B29L7/00B29L9/00
CPCB32B27/36B32B27/065B32B5/18C08J9/122C08J9/0066C08J5/18B29C44/24B32B2266/0264B32B2307/102B32B2307/304B32B2307/718B32B2307/72B32B2419/00B32B2605/08C08J2367/02C08K3/04C08J2205/044C08J2205/042C08J2205/04B29L2007/002B29L2009/00
Inventor 陈志强
Owner USEON NANJING EXTRUSION MACHINERY CO LTD