TWI624527B - Polyethylene tape - Google Patents

Abstract

A polyethylene tape includes a tape body layer, only a first tape body and the second tape body superimposed on the first tape body, and the first tape body and the second tape system are made of polyethylene (Polyethylene, abbreviated as PE); and an adhesive layer attached to one surface of the tape layer, and the adhesive layer is made of acrylic glue; wherein the tape layer and the adhesive layer meet the following conditions: 40 μm ≦ T1 ≦ 130 μm; 10 μm ≦ T2 ≦ 50 μm; 50 μm ≦ Tt ≦ 180 μm; where T1 is the thickness of the tape layer; T2 is the thickness of the adhesive layer; Tt is the sum of the thickness of the tape layer and the adhesive layer.

Description

Polyethylene tape

The present invention relates to an adhesive tape for sticking to an object to protect or fix the object; in particular, it refers to a polyethylene tape.

With the advancement of industrial technology, the use of tape has become increasingly popular in many fields such as daily life and engineering. The belt body of general tapes usually uses polyvinyl chloride (Polyyinylchloride, PVC for short) as a raw material for production. The main reason is that polyvinyl chloride has the advantages of low cost and good processability.

In addition, when the polyvinyl chloride tape is exposed to high temperatures or large temperature differences, the plasticizer of the adhesive material will leak out of the adhesive material, which will cause the lack of tackiness on the cross-section, overflow, running, and poor aging resistance of the tape. In other words, the The vinyl chloride tape not only easily causes the user to have a bad look and feel, but also causes the user the trouble of subsequent cleaning and the disadvantage of poor durability.

In addition, in the past ten years, in response to environmental protection trends, advanced countries around the world have actively developed environmentally friendly materials, or eco-materials. Among them, the European Union has initiated initiatives since 2004. Do not use products containing lead and halogen in electrical appliances or industrial supplies. Therefore, there is an urgent need for other more environmentally friendly materials to replace chlorine-containing PVC tapes.

Therefore, some industry players began to research and develop single-layer polyethylene (PE) as the raw material for the tape body, and then attached the plastic material to the polyethylene tape body to replace the Chlorine polyvinyl chloride tape. However, although the above-mentioned polyethylene tape (hereinafter referred to as polyethylene tape) can solve the above problems, in practice, ordinary polyethylene tapes still have a problem of insufficient adhesive strength (about 1g / 25cm). It cannot be effectively used in various fields, and thus cannot effectively improve the versatility of polyethylene tapes.

In view of this, an object of the present invention is to provide a polyethylene tape, which can provide better adhesive strength.

In order to achieve the above object, a polyethylene tape provided by the present invention includes a tape body layer and an adhesive layer. The belt body layer has only a first belt body and the second belt body superimposed on the first belt body, and the first belt body and the second belt system are made of polyethylene (PE). The adhesive layer is attached to a surface of the belt layer, and the adhesive layer is made of acrylic glue. The belt layer and the adhesive layer meet the following conditions: (1) 40 μm ≦ T1 ≦ 130 μm; (2) 10 μm ≦ T2 ≦ 50 μm; (3) 50 μm ≦ Tt ≦ 180 μm; where T1 is the thickness of the belt layer; T2 Is the thickness of the adhesive layer; Tt is the sum of the thickness of the tape body layer and the adhesive layer.

In this way, through the thickness planning and design described above, the affinity between the tape layer and the adhesive layer can be effectively improved, so that the adhesive layer can be more stably attached to the tape layer, and can be effectively The adhesive strength of the polyethylene tape is increased, so that the polyethylene tape can be widely used in various fields, thereby improving the versatility of the polyethylene tape.

〔this invention〕

10‧‧‧Polyethylene tape

11‧‧‧ with body layer

12‧‧‧ Adhesive layer

20‧‧‧Polyethylene tape

20a‧‧‧ Adhesive surface

20b‧‧‧Open side

21‧‧‧ with body layer

21a‧‧‧First Zone

21b‧‧‧Second Zone

22‧‧‧ Adhesive layer

FIG. 1 is a structural diagram of a preferred embodiment of the present invention.

Fig. 2 is a sectional view of a preferred embodiment of the present invention.

FIG. 3 is a structural diagram of another embodiment of the present invention.

FIG. 4 is a sectional view taken along the direction of 4-4 in FIG. 3.

In order to explain the present invention more clearly, the preferred embodiment will be described in detail with reference to the drawings. As shown in FIG. 1 and FIG. 2, the polyethylene tape 10 according to the preferred embodiment of the present invention includes a tape body layer 11. And an adhesive layer 12 attached to the tape body layer 11, wherein the tape body layer 11 is made of polyethylene (Polyethylene (PE) for short) by blow molding into a film shape. It is worth mentioning that the purpose of using polyethylene as a raw material in the present invention is that polyethylene is odorless, non-toxic, has excellent low temperature resistance, and has good chemical stability and can withstand most alkaline erosion. In addition, after being exposed to sunlight for a long period of time, polyethylene will automatically embrittle and decompose, and when polyethylene is completely burned in the air, it will only produce carbon dioxide (CO ₂ ) and water (H ₂ O) without generating other atmospheric pollutants. Will reduce the environmental burden and achieve the purpose of environmental protection.

The adhesive layer 12 is made of environmentally-friendly acrylic glue and is attached to the belt layer 11. The thickness of the adhesive layer 12 is smaller than the thickness of the belt layer 11. In addition, the reason why the adhesive layer 12 of this embodiment is made of environmentally-friendly acrylic adhesive is that the environmentally-friendly acrylic adhesive has no solvent residue, which can avoid causing damage to the environment during manufacture and use, and can therefore effectively To achieve the effect of environmental protection.

In addition, in addition to the selection of the above structure and material, another important point of the present invention is that the thicknesses of the belt layer 11 and the adhesive layer 12 satisfy the following conditions: (1) 40 μm ≦ T1 ≦ 130 μm; (2) 10 μm ≦ T2 ≦ 50 μm; (3) 50 μm ≦ Tt ≦ 180 μm; (4) 1/13 ≦ T2 / T1 ≦ 5/8.

T1 is the thickness of the tape layer 11; T2 is the thickness of the adhesive layer 12; Tt is the sum of the thickness of the tape layer 11 and the adhesive layer 12.

In addition, based on the structural foundation of the conditional expressions described above, when the tape layer 11 and the adhesive layer 12 are actually implemented, the thicknesses of the tape layer 11 and the adhesive layer 12 are combined as follows:

In this way, by matching the thickness of the tape layer 11 and the adhesive layer 12 described above, the polyethylene material of the tape layer 11 and the environmentally-friendly acrylic adhesive material of the adhesive layer 12 will exhibit a high degree. Affinity makes the adhesive layer 12 made of environmentally-friendly acrylic adhesive stable Adhesion to the tape body layer 11 makes the adhesive layer 12 difficult to peel off from the tape body layer 11, and can effectively and stably increase the adhesion amount of the adhesive layer 12, thereby increasing the adhesive strength of the polyethylene tape 10, Among them, the adhesive strength is best when the total thickness of the belt layer 11 and the adhesive layer 12 is 130 μm to 140 μm. At this time, the grip area of the adhesive strength can reach 1 g / 2.5 cm, which is higher than the conventional polyethylene. A lot of tape.

It is worth mentioning that the purpose of the present invention to design the thickness of the band body layer 11 between 40 μm and 130 μm is that when the band body layer 11 is less than 40 μm, there is a concern that it is too thin and easily broken. When 11 is larger than 130 μm, it will be too thick and difficult to flex, which will cause inconvenience in use. In addition, the purpose of the present invention to limit the thickness of the adhesive layer 12 to less than 50 μm is to avoid that the acrylic adhesive is too thick and part of the acrylic adhesive fails to adhere to the tape layer 11, which leads to the Some acrylic adhesives are easy to peel off and cause overflow, degumming, or residue.

In other words, under the above-mentioned thickness limitation, in addition to effectively increasing the adhesion amount of the adhesive layer 11 and increasing the adhesive strength of the polyethylene tape 10, the present invention can also improve the conventional polyvinyl chloride tape to accommodate overflowing glue, degumming, or It is the disadvantage of residual glue.

In another embodiment, as shown in FIGS. 3 and 4, the thickness of the body layer 21 and the adhesive layer 22 of the polyethylene tape 20 is the same as that of the polyethylene tape 10 described in FIGS. 1 and 2. The polyethylene tape 20 may further include the following structure. The tape body layer 21 of the polyethylene tape 20 has only a first tape body 21a and the second tape body 21b superimposed on the first tape body 21a. The belt body 21a and the second belt body 21b are in a film shape and are made of polyethylene (PE). In addition, the first belt body 21a and the second belt body 21b can be pressed or bonded. The tape body layer 21 is fixed to each other.

The adhesive layer 22 is attached to one surface of the tape body layer 21, and the adhesive layer 22 is made of acrylic glue, so that one surface of the polyethylene tape 20 is an adhesive surface 10a, and the other surface The surface is an open surface 10b. In this embodiment, the adhesive layer 22 is attached to a surface of the second tape body 21b, so that the second tape body 21b is interposed between the first tape body 21a and the adhesive layer 22.

In addition, when the polyethylene tape 20 is manufactured, the first tape body 21a and the second tape body 21b having different colors, hardness, or ductility can be manufactured according to different purposes of use. E.g:

Different colors:

The first tape body 21a has a light color (for example, white or off-white) and the second tape body 21b has a dark color (for example, black), and the adhesive layer 22 is attached to the surface of the second tape body 21b to make the polyethylene tape. The adhesive surface 10a is black, so that when the user uses the polyethylene tape, it can be clearly known that the black surface is the adhesive surface 10a. In addition, characters or patterns may be printed on the surface of the first tape body 21 a (that is, on the open surface 20 b of the polyethylene tape 20) to increase the appearance and recognition of the polyethylene tape 20.

Difference in ductility:

If the polyethylene tape is used to surround a columnar body, the area of the open surface 10b of the polyethylene tape will be larger than the area of the adhesive surface 10a. Therefore, when the polyethylene tape is manufactured, the first tape body The ductility of 21a is greater than the ductility of the second tape body 21b, so that the polyethylene tape is less likely to break during use, and the open surface 10b is relatively flat.

Difference in hardness:

If the polyethylene tape is used to attach the surface of an object to protect the object, the hardness of the first tape body 21a can be designed to be greater than the hardness of the second tape body 21b, so that the open surface 10b of the polyethylene tape is relatively Scratch and abrasion resistant.

In addition to the above, in addition to the colors, ductility, and hardness defined by the first belt 21a and the second belt 21b, the manufacturer can make different designs according to different purposes of use, and does not take the above description as limit.

Finally, it must be noted that the above is only the preferred and feasible embodiment of the present invention, and in actual use, the open side of the polyethylene tape can be further attached with a protective film or a release film to make the polymer The vinyl tape is used in a cylindrical form to prevent the adhesive surface from sticking to the open surface. For example, equivalent changes in the scope of the present invention and the scope of patent application should be included in the scope of patent of the present invention.

Claims (6)

A polyethylene tape includes: a tape body layer having only a first tape body and the second tape body superimposed on the first tape body, and the first tape body and the second tape system are made of polyethylene (Polyethylene (Referred to as PE); and an adhesive layer attached to one surface of the tape body layer, and the adhesive layer is made of acrylic glue; wherein when the thickness of the tape body layer is 40 μm to 50 μm, the The adhesive layer meets the following conditions: 10 μm <T2 ≦ 20 μm; where the thickness of the tape layer is 60 μm, the adhesive layer meets the following conditions: 10 μm ≦ T2 ≦ 30 μm; where the thickness of the tape layer is 70 μm, the The adhesive layer meets the following conditions: 10 μm ≦ T2 ≦ 40 μm; where the thickness of the tape layer is 80 μm to 130 μm, the adhesive layer meets the following conditions: 10 μm <T2 ≦ 50 μm; where T2 is the thickness of the adhesive layer . The polyethylene tape according to claim 1, wherein the first tape body and the second tape body have different colors, respectively. The polyethylene tape according to claim 1, wherein the ductility of the first tape body is greater than the ductility of the second tape body, and the adhesive layer is attached to a surface of the second tape body such that the second tape body is ductile. The band body is interposed between the first band body and the adhesive layer. The polyethylene tape according to claim 1, wherein the hardness of the first tape body is greater than the hardness of the second tape body, and the adhesive layer is attached to a surface of the second tape body, so that the second tape body Interposed between the first band body and the adhesive layer. The polyethylene tape according to claim 1, wherein a thickness of the tape body layer is greater than a thickness of the adhesive layer. The polyethylene tape according to claim 5, wherein the tape body layer and the adhesive layer more satisfy the following conditions: 1/13 ≦ T2 / T1 ≦ 5/8; wherein T1 is the thickness of the tape body layer.