How wide do you want the jar?: the effect on diameter for ease of opening for wide‐mouth closures

Yoxall, Alaster; Langley, Joe; Janson, R.; Lewis, Roger; Wearn, J.; Hayes, Shannon; Bix, Laura

doi:10.1002/pts.874

Cited by 21 publications

(31 citation statements)

References 6 publications

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“…The results showed that force was applied at an angle of approximately 30 and the opening speed was of the order of 500-600 mm/min. This was used in developing the test method for assessing lid pull off force required (outlined in the next section).…”

Section: Resultsmentioning

confidence: 99%

“…30,31 However, less work has been undertaken assessing the use of flexible packaging by older people.…”

Section: Discussionmentioning

confidence: 99%

“…The index finger (of a 23-year-old female) was set in position at an angle of 30 to the counterface with the yogurt pot lid attached and the tip was placed on the counterface (Figure 16). The user then adjusted the load applied to be around 20 N. This was used as it was found that good control could be exerted at this level of load.…”

Section: Test Methodologymentioning

confidence: 99%

See 2 more Smart Citations

Investigating openability of rigid plastic containers with peelable lids: The link between human strength and grip and opening forces

Canty

Lewis

Yoxall

2012

Proceedings of the Institution of Mechanical Engineers, Part C:

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As society ages there is a growing need to understand issues surrounding declining user capabilities. One such area has been accessibility of packaging by older people. To date much of the current research in this area has focused on measuring strength of older people and analysing the force needed to open various pack formats and has largely concentrated on accessibility of jam or sauce jars. However, a survey by ‘Yours’ magazine indicated that problems with thin film pack forms and peelable packaging was also an issue for older people. Hence the authors undertook a small-scale study to understand the issues surrounding accessing a rigid plastic container with a peelable lid. To that end the authors built a bespoke measuring device to measure container peeling forces, measured finger friction between pack and finger and undertook an observational analysis on 60 users accessing packaging of this type. Results indicated that the force needed to open containers of this type is lower than measured user forces including older people and it is therefore likely that the issues surrounding accessibility of this type of pack format are related to dexterity not strength. However, the authors also showed that this can be affected by context of use in that oily fingers could reduce the friction coefficient between finger and pack such that older people may not have sufficient strength to open packs of this type.

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Section: Resultsmentioning

confidence: 99%

“…30,31 However, less work has been undertaken assessing the use of flexible packaging by older people.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Investigating openability of rigid plastic containers with peelable lids: The link between human strength and grip and opening forces

Canty

Lewis

Yoxall

2012

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Using the same equipment as described in section 2.1.4 above, the researchers undertook a series of measurements on different diameters of closure including repeating measurement on the 75mm closure [19]. The total number of tests undertaken was approximately 1100 with 317 participants being measured for the 75 mm closure (161 male, 156 female).…”

Section: Yoxall Et Al (2010)mentioning

confidence: 99%

Note: Talking about Torque: Measuring Pack Accessibility – a Review

Yoxall

Rowson

2016

Packag Technol Sci

Self Cite

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Vacuum Lug Closures (VLCs) are a simple, reliable and low cost packaging option used for the protection and promotion of jams, pickles and sauces. Several surveys and anecdotal evidence suggest that packaging of this type can be notoriously difficult to open. Given the difficulty which packaging of this type may pose there has been significant academic research in understanding the difficulties associated with accessing packaging of this type. In response to the qualitative data gathered in these surveys research teams have attempted to quantify the forces that users can apply. What emerges from the approaches taken is a complex picture. Researchers do make comparisons with previous work but numbers of people tested, materials used, diameter and posture differ between research groups as does the information and style of the dissemination of results.Future packaging research experimental design should be more thorough and consistent in the sampling and presentation of data to facilitate repeatability and validity and enable the data gathered to form a larger data set. Further, to create usable 'design limits' for manufacturers and designers to reduce the variability within the data set, more focused measurements should be taken on distinct user groups such as a specific female decile and subgroup, i.e. small handed women between 70 and 80. Working with distinct populations would enable the likelihood of design changes to packaging to be readily compared and assessed.

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“…1,2,15 As individuals age, there is generally a loss of visual acuity and dexterity and strength in their fi ngers. 16 This adds another dimension to the issue of packaging openability, that is, how diffi cult is it for the elderly to safely access the products in today's packaging. Although our study did not focus on the aged in particular, it identifi es complains related to food packaging and the occurrence of accidents and injuries associated with the opening, usage and disposal of food containers.…”

Section: Introductionmentioning

confidence: 99%

Consumer complaints and accidents related to food packaging

Caner

Pascall

2010

Packag Technol Sci

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This study investigated consumer complaints related to food packaging design and the occurrence of injuries associated with the opening of various types of containers. Each study participant (245) took a 15 min fact-to-face interview and was asked attitudinal questions about 10 different categories of packaging including cans, glass and plastic bottles and jars, and paper-based composite packages. The subjects were also asked whether they had been injured while opening these packaging types. The survey showed that cans which needed a tool for opening were most diffi cult to enter. In some cases the tool was the source of injury. The respondents were also most concerned about deformation, spillage and product wastage associated with these types of containers. This included brick-type composite packages without a peelable seal over the pour spout. A large percentage of the respondents felt that more information was needed on the various methods of opening packages in general. Glass bottles and jars were most likely to be used for storage of products after they were emptied of their original contents. The results of this study could be used by manufacturers to assist them in the design and development of packaging with a lower potential to cause accidents and injuries.

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How wide do you want the jar?: the effect on diameter for ease of opening for wide‐mouth closures

Cited by 21 publications

References 6 publications

Investigating openability of rigid plastic containers with peelable lids: The link between human strength and grip and opening forces

Investigating openability of rigid plastic containers with peelable lids: The link between human strength and grip and opening forces

Note: Talking about Torque: Measuring Pack Accessibility – a Review

Consumer complaints and accidents related to food packaging

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