JPS629304Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an adhesive tape for binding various vegetables, fresh flowers, and the like.

Conventional adhesive tapes for binding vegetables and other items include (A)
Self-adhesive adhesive is applied to one end of the base material on the front side and the other end on the back side, and when tied together, the two ends overlap and the adhesive self-adheres to each other and fixes the base material. Similar self-adhesive adhesive is applied continuously on one side and at regular intervals on the other side, and when bundled, the adhesive on one side is overlapped with the adhesive on the other side, and the adhesives are bonded together. (C) Self-adhesive adhesive is applied to both the front and back sides of the base material, and when wrapped around the material to be wound, the adhesive on the front and back will self-adhere to each other. These self-adhesive adhesives adhere to each other, but do not adhere to other objects, so the self-adhesive adhesive in areas other than the areas where the adhesives adhere to each other is wasted. In addition, (A) with self-adhesive adhesive applied only to the ends requires binding tape of different lengths depending on the type of items to be bound and the amount to be bound in one bundle, making the work easier. It is troublesome and time-consuming, and it is difficult to perform the work smoothly and efficiently even when binding by machine. In addition, as mentioned above, these self-adhesive adhesives adhere to each other, but do not adhere to different types of objects such as objects to be bound, so when tying vegetables, etc., the tape will have adhesives self-adhering to each other at the edges. Although it is possible to bind the vegetables, etc., the parts that come into contact with the vegetables, etc. do not adhere to the vegetables, etc. at all, so the binding tape cannot be stably held on the outer surface of the bound vegetables, etc., and the tape may shift or move during handling. To prevent this, it may be possible to tie the vegetables tightly together, but if the ties are too strong, the vegetables will be damaged by being torn or crushed, resulting in a loss of commercial value.

The present invention has a water-resistant base material on one side that has weak adhesion to objects to be bound such as fresh vegetables and flowers;
The adhesive layer has a pressure-sensitive adhesive layer with a composition that has strong adhesive strength, so regardless of the type of vegetables to be bound or the size of the bundle, it can be bound with the same binding tape and with moderate binding pressure. It can be easily tied mechanically, and when tied, it adheres lightly on the entire surface that comes into contact with the vegetables and strongly self-adheses at both ends, so the binding tape does not shift or the vegetables etc. fall out during transportation or other handling, so it can be used at all times. Reliable binding can be maintained by proper tightening. Furthermore, even when vegetables etc. bound with this binding tape are unbound, the binding tape is easily peeled off from the vegetables and does not damage the vegetables.

Examples will be described below.Water resistant base material 1
One side of the tape has an adhesion force of 100 to 500 g/cm (adhesion force when the adhesive tape is pressed onto a steel plate with a pressure of 2 kg/cm ² ) for soft and easily damaged objects 4 containing moisture such as fresh vegetables and fresh flowers. 18mm wide, adhesive strength (self-adhesion strength) between adhesive layers (self-adhesion strength after 10 minutes of pasting pressure-sensitive adhesive layers of adhesive tape together) is 900.
A binding adhesive tape 3 is formed by providing a pressure-sensitive adhesive layer 2 having a composition having a width of ~2500 g/18 mm.

The base material 1 has good water resistance and is preferably printable, such as films such as polypropylene, polyethylene, unplasticized vinyl chloride, polyester, etc., and its thickness is preferably about 20 to 60 μm, but it can be printed by machine or hand. In addition to improving workability, the amount may be further increased or decreased to prevent damage to vegetables. Further, the product value can be further increased by coloring the base material as desired by blending a coloring agent or by printing, using it according to the type of vegetables, etc., or displaying the product name, place of origin, date of collection, etc.

If the adhesive force of the pressure-sensitive adhesive layer to the object to be bound is too strong, for example, when binding soft leafy vegetables such as spinach, the parts that come into contact with the pressure-sensitive adhesive layer will strongly adhere to the leafy vegetables, causing the adhesive tape to When removing the leaf vegetables, damage such as the adhesive part of the leaf vegetables is likely to be cut off, reducing the product value.
Moreover, if it becomes weaker than this, tied vegetables etc. will be easier to pull out during handling. Such a pressure-sensitive adhesive layer has a molecular weight of about 100 parts (by weight) of an elastic material containing one or more of butyl rubber, polyisoprene rubber, natural rubber, etc.
Polyisobutylene of about 7000 to 20000, molecular weight approx.
Mainly containing about 3 to 40 parts of a polymer containing one or more types of polybutene, etc., and about 5 to 30 parts of a tackifier, containing one or more types of polyterpene, rosin ester resin, etc. This can be formed by making a solvent solution of an appropriate concentration and applying the required amount onto the surface of the substrate by a conventional method. In addition, even if the pressure-sensitive adhesive layer is formed on a base material in the same manner as described above and is made of, for example, about 100 parts of butyl rubber, about 30 parts of polyisobutylene, and about 10 parts of polyterpene, and does not contain the above polymer, its water resistance remains. A product having excellent properties similar to those of the above formulation was obtained, except that the properties were slightly inferior.

As described above, this adhesive tape 3 has a pressure-sensitive adhesive layer 2 provided over the entire surface of one side of the base material 1, so when binding objects 4 such as vegetables, it can be used regardless of the size of the bundle. For example, binding can be performed using one type of long adhesive tape 3 wound into a roll, making it easy to bind by machine. In addition, the pressure-sensitive adhesive layer of the adhesive tape weakly adheres to the surface that comes into contact with vegetables, etc., and the pressure-sensitive adhesive layers strongly self-adhere and bind together at both ends 3a, 3a, so the adhesive tape is It can be stably held on the outside of the bound vegetables, and not only will the adhesive tape for binding not slip or move during transportation or other handling, or the bound vegetables, etc. Even if it grows and expands, the self-adhesive parts at both ends will not peel off and the binding will not be broken. Furthermore, even if the bound adhesive tape is unraveled, a part of the vegetables will not adhere to the tape and be cut off, so even soft leafy vegetables will not be damaged and their quality will not deteriorate. In addition, it does not require special materials or troublesome labor to manufacture, and can be easily mass-produced.It is used for binding vegetables such as root vegetables, leafy vegetables, and fruit vegetables, fresh flowers, and cultivated crops in horticulture. (Plant) Suitable for binding to supports, etc.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view, FIG. 2 is a cross-sectional view taken along the line -- in FIG. 1, and FIG. 3 is a schematic explanatory view showing the state of use. 1 is a base material, 2 is a pressure-sensitive adhesive layer, 3 is an adhesive tape, and 4 is vegetables.

Claims (1)

[Scope of utility model registration request] A component that has an adhesive force of 100 to 500 g/18 mm width to objects to be bound such as fresh vegetables and fresh flowers on the surface of the water-resistant base material, and an adhesive force of 900 to 2500 g/18 mm width between adhesive layers. Adhesive tape for binding vegetables, fresh flowers, etc. with a pressure-sensitive adhesive layer of the same composition.