JPH0644774U - Cushion packaging material for cold storage or cooling - Google Patents

Abstract

(57) [Summary] [Purpose] To maintain the low temperature liquid in the container at a low temperature and to cool the liquid at room temperature in the container. [Structure] A buffer sheet with a check valve for injection / drainage and a buffer sheet with a check valve for injection / exhaust are joined so that they can be separated from each other at the edges so that the inner and outer buffer sheets carry the refrigerant. Then, during use, air is press-fitted into the buffer sheet of the outer layer so that the refrigerant is kept cool and adheres to the outer surface of the article to be cooled.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a buffer packaging material for cold storage or cooling, which is attached to an article that does not want to rise in temperature or an article that requires cooling, to maintain or cool the temperature, more specifically, low-temperature beer, wine, and chilled fruit juice. , One or more containers such as barrels, bottles, cans, etc. filled with soft drinks are surrounded and kept at low temperature for a long time, or cold at room temperature to cool them To a cushioning packaging material for cooling.

[0002]

[Prior art]

 It takes a considerable amount of time to transport beer barrels taken out from refrigeration equipment and refrigerators to the place where they are consumed and actually use them for drinking, and cold beer etc. warms up during this period and is used for commercial purposes such as in restaurants. Would be inappropriate. In addition, if the product is delivered to a place for drinking at room temperature and carried in, it must take a long time to cool. For the former right, a container with a double wall structure, such as a beer barrel, which has a double-wall structure to reduce the influence of external heat has been proposed.

[0003]

[Problems to be solved by the device]

 However, the double-walled container requires a very long time to cool the beer filled in it once it has warmed up, and requires careful handling in order to prevent vacuum breakage, and also the cost of the container. It wasn't realistic either. The present invention is intended to easily provide cold beer and the like without using a container having a double wall structure having such a defect. It is intended for resin and glass containers.

[0004]

[Means for Solving the Problems]

 The present invention utilizes the heat insulation effect of the air layer arranged on the outermost side of the ordinary container to limit or keep the heat in and out, and the cooling function of the refrigerant arranged inside the container in close contact with the container. The air layer is heat-sealed at the outer periphery of the two non-air-permeable sheets and the inner depth is divided into small air chambers, and a check valve for injection and exhaust is removed. It is formed and held by a so-called buffer sheet that is attached, and the refrigerant uses a buffer sheet that is the same as or slightly smaller than the right buffer sheet as the refrigerant-carrying sheet, and the small liquid chamber contains a line or a mixture of water-absorbent resin and water. Are filled and placed. As brine, sodium chloride brine is harmless and suitable, but has a relatively high freezing point (-21 ° C (d = 1.17)), and chloride is required when high adhesion to the outside of the container and even lower temperature are desired. Calcium brine (−55 ° C. (d = 1.286)) is preferable, and organic substances such as methanol and ethylene glycol can also be used. As the water-absorbent resin, it is possible to use a usual poval-based or polyacrylic acid-based powder or granular material that exhibits a water absorption of about 1,000 times.

The buffer sheet and the refrigerant carrying sheet are integrated by heat-sealing the left and right edge portions of both sheets so that when the refrigerant has a large weight, the welded portions overlap (in FIG. 1). It is achieved by additionally heat welding (in the dotted frame). Instead of heat welding, an adhesive may be used, and a separate unit such as a button or a fastener may be used so as to be separable. Since such an integrated product is in the form of a sheet, it is possible to attach hooks, buttons, fasteners, or other engaging means to the left and right edge portions thereof to maintain a tubular shape, or between the left and right edge portions. Is further fixed by heat welding or the like, and is used in the form of a cylinder-shaped body.

[0006]

【Example】

 As shown in FIG. 1, the cushioning sheet BS and the refrigerant carrying sheet CS were heat-welded and fixed at the left and right edge portions L and R of each to produce a cushioning packaging material AS. Here, the cushioning sheet BS has a check valve V1 for injecting / exhausting sandwiched between two polyethylene sheets, and the welding 1 is communicated to the outer peripheral portion and to the inner inner portion while leaving the injecting / exhausting passage. Are formed by heat-sealing the welding 2 and the spot welding 3 that form the chambers b, b 2, ..., Further, the check valves V2, V3 for pouring / discharging liquid and the small liquid chambers c, c ,, which communicate with each other. The refrigerant-carrying sheet CS having, is also formed similarly to the buffer sheet BS. The small liquid chambers c, c, ... Of this buffer packaging material AS are filled with sodium chloride brine from the check valves V2 and V3 for pouring / discharging to make a buffer packaging material for keeping cold or cooling, and this is set to -20 ° C. After cooling, as shown in FIG. 2, the beer barrel B 1 made of an aluminum alloy and having an internal volume of 10 l was wound around the body and used for cooling and cooling. When air is forced in through the check valve V1 for pouring / exhausting after being wrapped around the beer barrel B, the small air chambers b, b, ... Inflate, and along with this, the small liquid chambers c, c ,, filled with brine ,. Was pressed and conformed to the shape of the body and adhered closely.

The cold preservation test was performed by placing the beer barrel B cooled to 0.5 ° C. at room temperature of 20 ° C., immersing the temperature sensor in beer, and measuring the time-temperature (rise). The control is a bare, isothermal beer barrel B with no wrapped wrap AS. Cooling or cushioning for cooling The temperature of the product kept cold by the packaging material was 3.5 ° C and 10.1 ° C after 4 hours and 8 hours, and the temperature of the product not kept cold was 13.0 ° C and 16.8 ° C. . The cooling test was performed by placing the beer barrel B at 20 ° C. at room temperature at 20 ° C. and measuring the time-temperature (fall) in the same manner as the cold insulation test. As for the temperature of the product cooled with the buffer packaging material for cold storage or cooling, the lowest temperature of 12.7 ° C was recorded about 3 hours after the start of cooling, and it was 13.1 ° C, 15.7 ° C after 4 hours and 8 hours. Met.

[0008]

[Effect of device]

 As described above, the buffer packaging material for cold storage or cooling of the present invention uses the elasticity and heat insulating property of the air injected into the cushioning sheet in combination to buffer and heat-insulate the cold storage-required or cold-cooled article. However, the cooling effect of the refrigerant-carrying sheet lasts for a long time, and the attachment / detachment operation is simple, and it can be repeatedly used. Therefore, according to the present invention, the cold storage and cooling of the container can be effectively performed for 5 to 6 hours, which is a general purpose, and the container can be transported from the refrigeration facility to a restaurant, a restaurant, an open air without a cooling means, or a ship. It is possible to provide chilled beer and the like by utilizing the time required for.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a heat-sealing condition and the like of a cushioning packaging material AS.

FIG. 2 is an explanatory view showing a cross section of a use state of a buffer packaging material for keeping cold or cooling.

[Explanation of symbols]

 AS Buffer packaging material BS Buffer sheet CS Refrigerant carrying sheet b Small air chamber c Small liquid chamber

Claims (6)

[Scope of utility model registration request] 1. A buffer packaging material for keeping cold or cooling in which a buffer sheet with a check valve for injection and exhaust and a refrigerant carrying sheet with a check valve for injection and drainage are separably integrated. 2. An outer peripheral portion of two superposed synthetic resin sheets is welded, a check valve for injection / exhaust is attached to one side thereof, and an inner back portion is welded to divide into small air chambers communicating with each other. The buffer sheet thus formed and the outer peripheral portions of the two superposed synthetic resin sheets are welded to each other, and the check valve for pouring / discharging liquid is attached to one side thereof, and the inner deep portion is welded to the small liquid which communicates with each other. The buffer packaging material for cold storage or cooling according to claim 1, wherein the refrigerant-carrying sheets divided into the chambers are fixed or detachably joined to each other at a side edge portion of both sheets, a welding portion, or the like. 3. The refrigerant according to claim 1, wherein the refrigerant is brine.
Cushion packaging material for keeping cold or cooling. 4. The buffer packaging material for cold storage or cooling according to claim 1 or 2, wherein the refrigerant is a gel of a water absorbent resin. 5. The cushioning material for cold storage or cooling according to claim 1, further comprising means for engaging both ends of the cushioning material for cold storage or cooling with each other. 6. The buffer packaging material for cold storage or cooling according to claim 1, wherein the buffer packaging material for cold storage or cooling is welded to each other at both left and right edges thereof and formed into a tubular shape.