Evaluation of a biodegradable foam for protective packaging applications

2007 ◽  
Vol 20 (6) ◽  
pp. 413-419 ◽  
Author(s):  
Samina Arif ◽  
Gary Burgess ◽  
Ramani Narayan ◽  
Bruce Harte
Keyword(s):  
Protective Packaging

Tests on disposable and re-usable needles part I - disposable needles

1964 ◽  
Vol 2 (8) ◽  
pp. 29-31
Keyword(s):  
Therapeutics Bulletin ◽  
Protective Packaging

The Drug and Therapeutics Bulletin carried out a series of tests on all brands of disposable needles available in October, 1963 (see Table I). Our tests were intended to assess and compare the different brands for sharpness, strength, non-leaking mount, and protective packaging, which are the most important requirements. In our next issue we shall report the results of similar tests on re-usable needles and shall compare the two types. Most tests were based on the British Standards (BS) 3522:1962 ‘Specification for Hypodermic Mounted Needles (Luer Fitting)’1. We tested at least 125 samples of each brand, which we bought anonymously. We tested Size No. 12 if we could get it, and, if not, the nearest size we could - No. 2 or No. 15.

Protective Packaging for Light-sensitive Foods

2019 ◽  
pp. 1-31
Author(s):  
María Gabriela Passaretti ◽  
Mario Daniel Ninago ◽  
Marcelo Armando Villar ◽  
Olivia Valeria López
Keyword(s):  
Protective Packaging

scholarly journals Experimental study on vibration transmissibility of Pre-loaded XPE and PE packaging cushioning material

2021 ◽  
Vol 49 (4) ◽  
pp. 962-968
Author(s):  
Péter Csavajda ◽  
Péter Böröcz
Keyword(s):  
Experimental Study ◽  
Static Load ◽  
Damping Ratio ◽  
Packaging System ◽  
Static Loads ◽  
Resonance Frequencies ◽  
Vibration Transmissibility ◽  
Protective Packaging ◽  
Load Conditions ◽  
Cushioning Material

Most of the shipped products are sensitive against shock and vibration events during the distribution. Various cushioning materials are usually used to prevent the product damages. During the design process the protective packaging system is developed by the engineers based on the cushion and vibration transmissibility features (ie. cushion curve) of the material used. However, after the assembly of the packaged-product, these are stored for various long periods in warehouse. During this time the products pre-load the cushioning material and its parameters can be changed. The main goal of this study is to evaluate the vibration transmissibility of PE and XPE cushioning material at varied storage (pre-loaded) time and static load conditions. Four different kinds of duration (1 hour, 10 hours, 100 hours and 1000 hours) were used for the pre-loading period at three different static loads (3.488 kPa, 4.651 kPa, and 6.976 kPa), and then at 0.5 oct/min sine sweep vibration the peak frequencies of response and vibration transmissibility, and damping ratio were determined. The results show that the effect of pre-loading is minimal by PE material, but can influence the resonance frequencies by XPE cushioning material. The findings of this study help the packaging engineers to understand better the mechanism of these cushioning materials and to design suitable protective packaging systems.

scholarly journals Dynamic Shock Cushioning Characteristics and Vibration Transmissibility of X-PLY Corrugated Paperboard

2011 ◽  
Vol 18 (4) ◽  
pp. 525-535 ◽  
Author(s):  
Yanfeng Guo ◽  
Wencai Xu ◽  
Yungang Fu ◽  
Hongtao Wang
Keyword(s):  
Experimental Studies ◽  
Least Mean Square ◽  
Vibration Transmissibility ◽  
Characterization Of Properties ◽  
New Type ◽  
Vibration Tests ◽  
Vibration Damage ◽  
Protective Packaging ◽  
Frequency Curves

X-PLY corrugated paperboard is a new-type corrugated paperboard with three layers of orthotropic corrugated sandwiches structure, and may be employed to protect products from shock or vibration damage during distribution. This article deals with the characterization of properties of X-PLY corrugated paperboard relevant to its application for protective packaging in distribution, such as dynamic cushioning curves, vibration transmissibility and frequency curves. The main feature of article is the evaluation on the dynamic shock cushioning characteristics and vibration transmissibility of X-PLY corrugated paperboards by a series of experimental studies on the drop shock tester and vibration tester, the establishment of experimental formulas of dynamic cushioning curves, and the analysis of peak frequencies, vibration transmissibility and damping ratios. By using the fitting polynomial of curve and method of the least mean square, the experimental formulas and characteristic coefficients of dynamic cushioning curves have been obtained. From the vibration tests with slow sine sweep, the peak frequencies and vibration transmissibility are measured and used to estimate the damping ratios. These works provide basic data and curves relevant to its application for protective packaging in distribution.

Wavelet Transform to Index Road Vehicle Vibration Mixed Mode Signals

2015 ◽  
Author(s):  
Julien Lepine ◽  
Vincent Rouillard ◽  
Michael Sek
Keyword(s):  
Wavelet Transform ◽  
Transient Vibration ◽  
Road Vehicle ◽  
Time Frequency ◽  
Mode Detection ◽  
Vehicle Engine ◽  
Road Roughness ◽  
Protective Packaging ◽  
Precise Time ◽  
Orthogonal Wavelet Transform

Goods and products transported by road are subjected to vehicle vibration which, without proper protective packaging, can suffer damage. To reduce shipment costs, protection has to be optimised to limit product damage occurrence while keeping packaging weight and size to a minimum. Optimisation is realized by simulating the vibration of transport vehicles. To achieve an accurate simulation, each vehicle vibration mode has to be modelled. These include: the nonstationary random vibration induced by road roughness and speed variations, the transient vibration created by road surface aberrations and the harmonic vibration created by the vehicle engine and drive train. Identifying and indexing these mixed-modes within complex road vehicle vibration signals is essential to define the severity and occurrence of the different modes in order to develop an accurate model. This paper shows that indexing can be performed using the orthogonal wavelet transform such as Daubechies 10. Assuming that each mode is preponderant in different analysis scales, the wavelet coefficients can be used to perform the indexing. This allows more sensitive mode detection and a more precise time indexing thanks to the multi-resolution nature of the wavelet transform compared to other time-frequency analysis methods.

Sign in / Sign up

Export Citation Format

Share Document