The secret to opening a glass jar
Japanese researchers have developed a parallelogram-shaped container that even the weakest of hands will be able to get to grips with
Most of us have struggled to open a glass jar. Whether you’re desperate to add some jam to your toast, mayonnaise to your sandwich or pickles to your burger, those tightly screwed-on lids can prove a real nuisance.
But Japanese researchers have come up with a solution through the development of a glass jar whose lid can be removed with ease.
And it turns out the fundamental problem lies in the shape of those pesky glass containers.
Noriko Hashida, a professor at the Shibaura Institute of Technology, and Hakuyo Glass, which is based in Tokyo, have developed a container that can be opened by men, women, children and the elderly.
The body of the jar has a parallelogram-shaped cross-section so that the user can tightly grip it, Nikkei Technology Online reported. Additionally, a weaker force is required to remove the lid.
Hashida asked men and women in their 20s to 80s to remove the lids of 15 different glass containers and evaluate “the ease of opening a lid” and “the ease of holding a bottle”.
The results showed that glass jars that fir the shape of users’ hands are easier to hold, while a glass container that is smooth from its neck to its body is easier to open.
Further tests revealed that a parallelogram was the optimum shape for the cross-section of a glass jar.
Hakuyo Glass now plans to use the design to package its products, including jam and tsukudani (seafood, meat or seaweed preserved in soy sauce and mirin).
Meanwhile, back here in the UK you'll have to keep on struggling...
- 1 President of Argentina adopts Jewish godson to 'stop him turning into a werewolf'
- 3 Sir Winston Churchill’s family begged him not to convert to Islam, letter reveals
- 4 UK weather: 'Coldest night of the year' tonight as freezing temperatures plummet to -10C
- 5 Game of Thrones is most-pirated TV show of 2014
President of Argentina adopts Jewish godson to 'stop him turning into a werewolf'
Exclusive: Abusers using spyware apps to monitor partners reaches 'epidemic proportions'
Stoke-on-Trent becomes first British city to be classified as 'disaster resilient' by the United Nations
Sir Winston Churchill’s family begged him not to convert to Islam, letter reveals
AirAsia flight QZ8501 missing: Search for plane carrying 162 passengers from Indonesia to Singapore suspended overnight
Millions of Britons struggling to feed themselves and facing malnourishment
British actor Idris Elba cannot star as James Bond because he is black, says shock jock Rush Limbaugh
Ukip member gets into Christmas spirit with Union Flag plea to Santa 'for our country back'
Germany anti-Islam protests: 17,000 march on Dresden against 'Islamification of the West'
Nigel Farage: Ukip leader named 'Briton of the year' by The Times
Immigrants make UK racist, says Ukip councillor Trevor Shonk
£32000 - £40000 per annum: Recruitment Genius: A Business Manager is required ...
£45000 - £55000 per annum: Recruitment Genius: This is an exciting opportunity...
£20000 per annum: Recruitment Genius: Panel Wireman required for small electro...
£25000 - £27000 per annum: Recruitment Genius: An SME based in East Cheshire, ...