Mixing
Plastic wrap
A roll of Plastic Wrap
Plastic wrap, cling film, shrink wrap, Saran wrap, cling wrap or food wrap is a thin plastic film typically used for sealing food items in containers to keep them fresh over a longer period of time. Plastic wrap, typically sold on rolls in boxes with a cutting edge, clings to many smooth surfaces and can thus remain tight over the opening of a container without adhesive. Common plastic wrap is roughly 0.0005 inches (12.7 μm) thick.[1][2] The trend has been to produce thinner plastic wrap, particularly for household use (where very little stretch is needed), so now the majority of brands on shelves around the world are 8, 9 or 10 μm thick.
Contents
1 Materials used
2 Food use
3 Medical use
4 See also
5 References
6 External links
Materials used
Plastic wrap was initially created from polyvinyl chloride (PVC), which remains the most common component globally. PVC allows permeability to water vapor and oxygen transmission,[3] which can add to the duration of peak freshness of the food products wrapped. There are concerns about the transfer of plasticizers from PVC into food.
A common, cheaper alternative to PVC is low-density polyethylene (LDPE). It is less adhesive than PVC, but this can be remedied by adding linear low-density polyethylene (LLDPE), which also increases the film's tensile strength.[4]
In the US and Japan, plastic wrap is sometimes produced using polyvinylidene chloride (PVdC), though some brands, such as Saran wrap, have switched to other formulations due to environmental concerns.[5]
Food use
Plastic wrap is often used to wrap food to preserve its freshness and to prevent contact with insects and any other potential contaminants.
Medical use
- Wrapping premature babies in plastic wrap immediately after birth helps prevent low temperature before arrival to the neonatal intensive care unit.[6]
- Plastic wrap is used to contain the external organs of babies with rare medical conditions prior to surgery.[7]
See also
Stretch wrap, plastic wrap used in large-scale industrial/commercial packaging- Overwrap
- Wax paper
- Aluminium foil
References
^ "Dow SARAN WRAP™ 3 Plastic Film". Retrieved 10 December 2016..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
^ "FAQs: Microwave, Dishwasher & Freezer Q&A - Glad®". 20 November 2014. Archived from the original on 23 February 2011. Retrieved 10 December 2016.
^ Coultate, Tom (2015-08-17). Food: The Chemistry of its Components: 6th Edition. Royal Society of Chemistry. ISBN 9781849738804. Archived from the original on 2016-04-28.
^ "Cling Wrap Explained - Darren Barefoot". Archived from the original on 25 September 2016. Retrieved 10 December 2016.
^ mburke@journaltimes.com, MICHAEL BURKE Racine Journal Times. "CEO explains why SC Johnson made Saran Wrap less sticky, hurting sales". madison.com. Archived from the original on 2017-06-20. Retrieved 2017-06-20.
^ McCall, Emma M.; Alderdice, Fiona; Halliday, Henry L.; Vohra, Sunita; Johnston, Linda (February 2018). "Interventions to prevent hypothermia at birth in preterm and/or low birth weight infants". The Cochrane Database of Systematic Reviews. 2: CD004210. doi:10.1002/14651858.CD004210.pub5. ISSN 1469-493X. PMID 29431872.
^ Tracey, Mollie (3 March 2016). "Baby born 'inside out' saved by quick-thinking medics who wrapped her cling film". Daily Mirror. Trinity Mirror. Archived from the original on 14 February 2017. Retrieved 13 February 2017.
External links
 | Wikimedia Commons has media related to Cling film. |
Comments
Post a Comment