[특허]Reclosable food packaging having snap closure and method of making same

Reclosable food packaging having snap closure and method of making same 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B65D-013/00
출원번호	US-0855157 (1992-03-20)
발명자 / 주소	Hustad Gerald O. (McFarland WI) Grindrod Paul E. (Madison WI)
출원인 / 주소	Oscar Mayer Foods Corporation (Madison WI 02)
인용정보	피인용 횟수 : 36 인용 특허 : 0

초록 ▼

A food package container including a base and a body in alignment with and peelably sealed to each other is provided. At least one of snap closure assembly is provided on the respective peripheral flanges of the base and body, and this snap closure assembly provides an audible snapping signal when the consumer recloses the food packaging container. The closure assembly includes an insertion projection and an opening in general registry therewith which is undersized with respect to the projection.

대표청구항 ▼

A food packaging container, comprising: a base member having a panel portion for supporting a food product and a peripheral flange portion generally surrounding said base member panel portion; a body member having a bubble portion for cooperating with the base member panel portion to define a cavity to fully enclose the food produce therewithin, said body member further including a peripheral flange portion generally surrounding said body member bubble portion; peelable sealing means to provide hermetic sealing of the base member peripheral flange portion to the body member peripheral flange portion after the food product is filled into the cavity, said peelable sealing means providing a perimeter that is generally closely spaced outside of said cavity; locking means for snap locking said base member to said body member, said locking means including at least one closure assembly, said closure assembly including an insertion projection having a perimeter with a defined perimeter shape and an undersized opening having a perimeter shape which is generally the same as said defined perimeter shape of the insertion projection and which is undersized with respect to at least a part of said insertion projection perimeter, said insertion projection having been thermoformed into one of said base member peripheral flange or said body member peripheral flange, said thermoformed insertion projection having a surface spaced away from said peripheral flange and a sidewall joining said spaced surface and said peripheral flange, said undersized opening being in the other of said body member peripheral flange or said base member peripheral flange, said insertion projection and said undersized opening being in insertion interengagement registry with each other at a location outside of said peelable sealing means, and said undersized opening receives and enters into interference fit snapping engagement with said insertion projection; said sidewall of the insertion projection includes a post-thermoformed crimped portion which was formed by crimping said sidewall of said insertion projection after said projection has been thermoformed, said post-thermoformed crimped portion being an indent within said sidewall of the insertion projection, said spaced away surface of said insertion projection has a peripheral size greater than the periphery of the undersized opening through which the spaced away surface passes during snap locking, whereby said spaced away surface and said periphery of the undersized opening interfere with each other during snap locking movement of the food packaging container, and said indent of the insertion projection sidewall has a peripheral size not greater than said periphery of the undersized opening, whereby said indent and said periphery of the undersized opening do not interfere with each other when said food packaging container is snap locked; said undersized opening has a protruding wing portion which is generally perpendicular to said sidewall of the insertion projection and which engages said sidewall at a corresponding location thereof, said corresponding location being other than at said indent, said protruding wing portion deforms to provide pinching securement action when said closure assembly is joined together, said protruding wing portion providing an opening portion which is slightly narrower than said corresponding location of the insertion projection sidewall whereby said protruding wing portion and corresponding location of the sidewall slidably engage each other to deform said protruding wing portion or said corresponding location of the sidewall to provide said pinching securement action therebetween during movement of the insertion projection into the opening before snap locking and when said insertion projection is snap locked; and said closure assembly provides for reclosure of the food packaging container, which reclosure is signalled by an audible snapping sound generated by reinsertion of said insertion projection into said undersized opening and engagement of said post-thermoformed crimped portion with said undersized opening.

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Reclosable food packaging having snap closure and method of making same 원문보기

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연합인증

Reclosable food packaging having snap closure and method of making same 원문보기

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