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

Method for measuring thermal shrinkage performance of glass paper

A technology of cellophane and thermal shrinkage, which is applied in the direction of measuring devices, material thermal analysis, instruments, etc., can solve the problems of no measurement methods, etc., and achieve the effect of simple operation process

Inactive Publication Date: 2012-02-08
SHANDONG HENGLIAN NEW MATERIALS CO LTD
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no systematic national standard for the heat shrinkability of cellophane, let alone a specific measurement method.

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

Embodiment 1

[0023] Fold the cellophane to be inspected in half horizontally, and fold it into 6 layers. After folding, cut 6 square samples of 100mm×100mm vertically and horizontally with a squarer, cut a wedge-shaped corner at one corner, the long side of the corner is the vertical direction, and the corner The short side is landscape. Adjust the induction cooker to keep the temperature of the medium constant at 140°C, spread out the samples, take any one and immerse it in the medium bath, heat it for 5 minutes, take it out with tweezers, put it in the same medium at room temperature and cool it to room temperature, measure its longitudinal direction after heat shrinkage Dimensions and transverse dimensions, using the formula transverse thermal shrinkage = [( L 横 - L 横0 ) / L 横0 〕×100%, calculate the transverse heat shrinkage rate of the proof; longitudinal heat shrinkage rate=〔( L 纵 - L 纵0 ) / L 纵0 〕×100%, calculate the longitudinal thermal shrinkage rate of the proof, in the f...

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

No PUM Login to View More

Abstract

The invention discloses a method for measuring the thermal shrinkage performance of glass paper, which comprises the following steps of: cutting a plurality of glass paper samples with the same dimension; heating any one sample in a heating medium with constant high temperature for a while, then taking out and placing the heated sample into the kindred medium at room temperature to be cooled to the room temperature, and measuring and recording the longitudinal dimension and the lateral dimension of the sample; and calculating the lateral thermal shrinkage and the longitudinal thermal shrinkage of the sample respectively according to computational formulas of the lateral thermal shrinkage and the longitudinal thermal shrinkage in accordance with the recorded data. Repetitive operation is carried out to calculate the lateral thermal shrinkage and the longitudinal thermal shrinkage of each sample. The lateral thermal shrinkage and the longitudinal thermal shrinkage of the samples are respectively averaged, and the obtained average values are respectively used as the lateral thermal shrinkage and the longitudinal thermal shrinkage of the measured glass paper. The method disclosed by the invention has the advantages that: the heating speed is fast, the waiting time is short, the adjustment is convenient, the operation is simple and convenient, and the thermal shrinkage performance of the glass paper can be represented quantificationally by exact numerical values.

Description

technical field [0001] The invention relates to a method for measuring the heat shrinkability of cellophane. Background technique [0002] Cellophane is an environmentally friendly and biodegradable cellulose film with good moisture-proof, water-impermeable, and micro-breathable properties. At present, with the continuous expansion of the application field of cellophane products, the market's requirements for various indicators of cellophane are becoming more and more specific. In food packaging and other industries, when cellophane is used, it needs to have good thermal shrinkage properties. If the thermal shrinkability of cellophane is not good, it will affect the use characteristics and packaging quality of food packaging paper. At present, there is no systematic national standard for the heat shrinkability of cellophane, let alone a specific measurement method. Contents of the invention [0003] The technical problem to be solved by the present invention is to provid...

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
IPC IPC(8): G01N25/00
Inventor 王晓荣马后文刘彩霞
Owner SHANDONG HENGLIAN NEW MATERIALS CO LTD