JPH0219397B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a cooling pack used for cooling affected areas or various foodstuffs.

[Prior art] Conventionally, by welding the left and right edges of the overlapping front and back injection channel films, an injection channel is formed on the inside thereof, and these front and back injection channel films are used to form an overlapping rectangular front and back injection channel film. A film made of a different material that cannot be welded to the injection channel film is inserted between the main films, and the center of the upper edge of the injection channel film corresponds to the center of the upper edge of the main film. A cooling pack is manufactured by welding the top and bottom and left and right edges of both the front and back main films.

[Problems to be Solved by the Present Invention] According to the above-mentioned conventional manufacturing method, when welding the upper edges of the overlaid front and back main films,
In order to form the water injection port, a film made of a different material that cannot be welded to the water injection channel film must be inserted into the top of the water injection channel, and this work is difficult to automate and must be done manually.
The drawback was that it was not possible to mass-produce packs efficiently.

In view of the above-mentioned conventional problems, the present invention provides a water inlet at the top of the inlet channel in a cooling pack to be manufactured, without having to insert a film made of a different material that cannot be welded to the inlet channel film. The purpose of this is to improve productivity and significantly reduce costs by forming .

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a printed surface 1 for forming a water inlet at the center of the upper edge of at least one of the superimposed surfaces, and a film for both front and back water injection channels which are stacked one on top of the other. By sandwiching the printed surfaces 2 and 2' and applying welding lines 4 and 4' on the left and right sides, crossing both the upper and lower sides, an injection channel 5 is formed inside the lines 4 and 4'. , 2' are sandwiched between the overlapping rectangular front and back main films 6, 6', and the printed surfaces of the injection channel films 2, 2' correspond to the center of the upper edges of the main films 6, 6'. In this state, the upper and lower sides 7, 7' and left and right 8 of the front and back main films 6, 6',
By performing a welding process on the edge of 8', a water inlet 9 is formed by the printed surface 1 of the water inlet film 2' and the overlapping surface of the film 2 that overlaps the printed surface.

[Function] Since the method for manufacturing a cooling pack according to the present invention is configured as described above, the cooling pack manufactured by this method consists of overlapping rectangular front and back main films 6, 6'. The left and right shoulders are welded leaving a water inlet 9 at the left and right edges 8, 8', the lower edge 7', and the center of the upper edge 7, and the front and back main films 6, 6 are welded in correspondence with the water inlet 9. The injection channel 5 is formed on both the front and back injection channel films 2, 2' which are sandwiched between If you pour water into the pack from the water inlet 9 through the water injection channel 5 with an appropriate amount of ice pack in it, the contents will gel in a few minutes, so put the contents in the freezer. It is used after being frozen.

[Examples] Examples of the present invention will be described below with reference to the drawings.

The above-mentioned printed surface of the front and back water injection channel films 2, 2' made of transparent polyethylene that are overlapped with a rectangular white printed surface 1 for forming a water injection port provided at the center of the upper edge of at least one of the overlapping surfaces. Inserting 1,
By applying weld lines 4', 4' on the left and right sides, crossing both the upper and lower sides 3, 3' of the injection channel films 2, 2',
An injection channel 5 is formed inside the injection channel, and the front and back injection channel films 2, 2' are sandwiched between overlapping transparent polyethylene rectangular main films 6, 6'. The upper and lower edges 7 of both the front and back main films 6, 6' are aligned with the printed surface 1 of the film 2' and the center of the upper edges of the main films 6, 6'.
7 and the left and right edges 8, 8' are welded, the printed surface 1 of the injection channel film 2' and the overlapping surface of the film 2 that overlaps the printed surface 1 cannot be welded. A water inlet 9 is left in the center of the upper edge of the rectangular-shaped front and back main films 6, 6', and both shoulders are welded, and the left and right edges 8, 8' and the lower edge 7' are welded. , and a cooling pack is produced in which a water injection channel 5 is formed on both the front and back water injection channel films 2, 2' which are sandwiched between the front and back main films 6, 6' in correspondence with the water injection port 9. It is.

In the cooling pack shown in the attached drawings, the widths of the injection channel films 2, 2' and the main films 6, 6' are the same; It is possible that the width is narrower than the width of ′. Further, although the injection channel 5 provided in the injection channel films 2, 2' is shown as an extremely simple example, it is conceivable that the injection channel may have a more complicated shape, such as a zigzag-shaped injection channel.

[Effects of the Invention] As described above, the method for manufacturing a cooling pack according to the present invention includes providing a printed surface for forming a water inlet at the center of the upper edge of at least one overlapping surface of both the front and back water injection channel films. This allows the water inlet to be formed at the top of the water injection channel in the manufactured cooling pack without having to insert a different material into the upper part of the water injection channel that cannot be welded to the water injection channel film as in the past. Because of this, fully automatic bag making using a bag making machine can be easily carried out, so efficiency is greatly improved and costs can be significantly reduced. However, the printing on the inside of the water inlet is
Since it can be seen through from the outside of the manufactured pack, it can be conveniently used as an indicator of the water injection port, and since the printing is printed on the inner surface of the overlapping front and back water injection channel films, it can be easily seen from the outside of the pack. Since there is no risk of peeling off during the manufacturing and sales process, it can be sold and used without spoiling its aesthetic appearance.

[Brief explanation of drawings]

FIG. 1 is a perspective view of both the front and back injection channel films at an early stage of the manufacturing method according to the present invention. Figure 2 is a slope view of both front and back injection channel films with injection channels formed. FIG. 3 is a front view of a cooling pack manufactured by the manufacturing method according to the present invention. FIG. 4 is a longitudinal sectional front view of the center portion of the same as above. In the figure, 1 is the printing surface. 2 and 2' are injection channel films.
3 and 3' are both the upper and lower sides of the injection channel film. 4 and 4' are welding lines. 5 is the injection channel. 6 and 6' are main films.
7 and 7' are the upper and lower edges of the main film. 8 and 8' are the left and right edges of the main film. 9 is the water inlet.

Claims (1)

[Claims] 1 A printed surface 1 for forming a water inlet is provided at the center of the upper edge of at least one of the overlapping surfaces, and intersects both the upper and lower sides of the overlaid front and back inlet channel films 2, 2' by sandwiching the above printed surface. By applying weld lines 4 and 4' on the left and right sides, an injection channel 5 is formed inside the weld lines 4 and 4'.
, and these front and back injection channel films 2, 2',
Overlapping rectangular front and back main films 6, 6'
The top and bottom 7,
7' and the left and right edges 8, 8' by welding, the printed surface 1 of the injection channel film 2, 2' is
A method for producing a cooling pack, characterized in that a water inlet 9 is formed by the printed surface and the overlapping surface of the film 2 overlapping.