发明名称 |
PACKAGING FOR PRESERVING FRUITS AND VEGETABLES AND MANUFACTURING METHOD |
摘要 |
The invention presented herein includes a packaging for preserving fruits and vegetables, which is lightweight and made of flexible polymer materials which permit controlled ventilation, enabling the packaged fruits and/or vegetables to preserve the moisture thereof for a larger number of days, keeping same fresh for a longer time without the need for refrigeration. The body of the packaging consists of stacked layers of polymer materials; an outer layer of polymer material having a structural function, a porous polymer material having a moisture-absorbing function, and a third polymer material having micro-perforations that have a moisture-retaining function. Said materials are pre-arranged in the central portion of a strip of polymer material. The strip of multilayer polymer material is pre-arranged longitudinally such as to be folded and subsequently heat-sealed, thus forming a packaging bag having a planar base. The method used for heat-sealing the central strips of polymer material includes heat-sealing only the edges of polymer material by applying heat and pressure via cylinders having a temperature that is controlled by heat-welding machinery. Said unique heat-sealing method makes it possible only to adhere the edges of the polymer layers, leaving the central portion thereof joined together but not laminated. |
申请公布号 |
CA2924561(A1) |
申请公布日期 |
2015.04.09 |
申请号 |
CA20132924561 |
申请日期 |
2013.10.03 |
申请人 |
GRIJALVA VARILLAS, SERGIO FERNANDO |
发明人 |
GRIJALVA VARILLAS, SERGIO FERNANDO |
分类号 |
B65B25/02;B32B3/10;B32B7/02;B32B7/04;B65D65/40;B65D81/22;B65D81/26;B65D81/28;B65D81/34;B65D85/34 |
主分类号 |
B65B25/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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