JPH0610169U - Tying tape - Google Patents

Abstract

(57) [Summary] [Structure] A binding tape characterized in that a laminate of a tape-shaped substrate, a viscoelastic microporous membrane layer and a smooth surface layer is wound around a core material. [Effect] The binding tape of the present invention can be easily bonded / fixed and peeled off because it is bonded / fixed to the smooth surface layer by the microporous sucker action of the viscoelastic microporous membrane layer. Can be united, unbundled, and reused. In addition, conventional adhesive
Since the joining is not performed using an adhesive, an object such as an adhesive does not adhere to the object to be bound, and the object to be bound is not damaged when the adhesive is peeled off.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a binding tape. More specifically, it is useful for easily and repeatedly bundling objects to be bound with a smooth surface (such as metal or glass or plastic rods or tubes), vegetable bundles, fresh bouquets, and other bundles. A preferred binding tape.

[0002]

[Prior art]

 Instead of binding metal or glass or plastic sticks or tubes, bundles of vegetables, fresh bouquets, etc. with strings or tape to bind them together, you can wrap them with adhesive tape to save time and effort. Adhesive tape has come to be used as a binding material.

In the conventional adhesive tape, the adhesive adheres to a stick or a tube made of various materials, vegetables or products, or its packaging material, so that the bound material may be soiled or scratched when the tape is removed. There was a problem that it was easy to attach.

Therefore, there has been proposed an adhesive tape for binding raw vegetables having an adhesive layer having a weak adhesive force.

However, in this pressure-sensitive adhesive tape, since the pressure-sensitive adhesive is composed of specific components and compositions, it is complicated and expensive to adjust the pressure-sensitive adhesive. It could not be said that the adhesive strength of the bundle was small, and it was not satisfactory.

[0006]

[Problems to be solved by the device]

 An object of the present invention is to solve the above-mentioned conventional problems and to provide a binding tape that can be easily and repeatedly bound without using a special adhesive.

[0007]

[Means for Solving the Problems]

 The structure of the present invention for achieving the above object has the following structure. That is, the binding tape is characterized in that a laminate of a tape-shaped substrate, a viscoelastic microporous membrane layer and a smooth surface layer is wound around a core material.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an example of a binding tape according to the present invention.

FIG. 2 is a perspective view showing an example of a use mode of the binding tape according to the present invention. FIG. 3 is a partial front view showing an example of a binding mode of the binding tape according to the present invention. FIG. 4 is a partial front view showing an example of another binding mode of the binding tape according to the present invention. In the figure, 1 is a tape-shaped substrate, 2 is a viscoelastic microporous membrane layer, 3 is a smooth surface layer, and 4 is a perforation.

A feature of the present invention is that the viscoelastic microporous membrane and the smooth surface layer are joined. As a result, the tape components can be easily separated, and the tape can be repeatedly joined, fixed and separated.

The tape-like base material used in the present invention is not particularly limited in its material and form as long as it has tape-like flexibility. For example, a film or sheet made of thermoplastic plastic, various woven or knitted fabrics, non-woven fabrics or composites thereof can be used. More specifically, polypropylene, polyethylene, polyethylene terephthalate, polyvinyl chloride, plastics such as nylon, cellophane, acetate, etc., or a film or sheet made of a composite material thereof may be used. A film or sheet is selected and used according to the application and purpose. Further, the fiber is made of a fiber material such as a knitted fabric, a woven fabric, a non-woven fabric, a composite thereof, or a napped pile fabric, and is not limited in its form, shape, texture, or the like. That is, various fibers and threads that are usually applied to fiber base materials such as natural fibers, synthetic fibers, and inorganic fibers can be applied. As the material of the base material used in the present invention, synthetic fibers such as nylon, polyester and polyacrylonitrile, or natural fibers such as wool can be used. They may be filament yarns (including textured yarns) or spun yarns. In addition, it is preferable to use a so-called base material that is easily cut by hand, because it is easy to cut the binding tape to a required size during binding.

As the tape-shaped substrate, a biaxially oriented polypropylene film having a thickness of about 40 μm, cellophane having a thickness of about 35 μm, a soft polyvinyl chloride film having a thickness of about 150 μm, a hard polyvinyl chloride film having a thickness of about 35 μm A synthetic fiber woven fabric or a non-woven fabric having a thickness of about 120 μm is preferably used.

Next, the viscoelastic microporous membrane in the present invention is a membrane having a large number of micropores and exhibiting viscoelasticity. For example, polyurethane resin, SBR resin, NBR resin, silicone resin, vinyl chloride resin Those composed of a resin composition such as can be preferably applied. The viscoelastic microporous membrane of the present invention preferably has a dynamic loss E ″ peak temperature of −50 ° C. or higher and −10 ° C. or lower, and a loss normal cutoff (tan δ) peak value of 0.8 or lower. The lower the peak temperature of the dynamic loss E ″ is, the better, but if it is too low, the heat resistance decreases and problems occur in practical use, so −50 ° C. or higher is preferable. If it exceeds -10 ° C, low-temperature curability is increased, which is not preferable. On the other hand, if the peak value of loss normal cut (tan δ) exceeds 0.8, the pore structure of the microporous membrane is likely to collapse due to compression or the like, which is not preferable. Further, the dynamic elastic modulus (log ₁₀ E ′) in the rubber region is preferably 9.0 dyne / cm ² or less. If it exceeds this value, the Young's modulus and the modulus become large and it becomes hard, which is not preferable.

The viscoelastic property in the present invention is measured by the following method. Sheet-shaped test piece Vibron tester (manufactured by Orientec (Ltd.)), 11 0cps, in the temperature range of -90 ° C. to 200 DEG ° C., the dynamic elastic modulus of a rubber region (log ₁₀ E '), loss tangent ( tan δ) is a value obtained by measuring the peak temperature of the dynamic loss E ″.

The micropores of the microporous membrane in the present invention preferably have a maximum diameter of 3 μm or more and 250 μm or less, more preferably 20 to 100 μm. The maximum pore diameter referred to here is the diameter in the case of a perfect circle, and the longest pore diameter of a single pore in the case of an elliptical shape instead of a perfect circle. The pore size is obtained from an observation photograph by a scanning electron microscope (SEM). The pore structure of the microporous membrane in the present invention has a large number of fine small holes penetrating from the front surface to the back surface of the microporous membrane. It is preferable that a relatively large cavity communicating with the small holes exists inside the microporous membrane, and that a communication hole be provided in at least a part of the wall surface that separates the adjacent cavities. Here, it is preferable that the small holes have an average diameter of usually 250 μm or less, preferably 100 μm or less, and the cavities present therein have a diameter of 3.8 times or less the diameter of the small holes. The pore shape of the microporous membrane in the present invention is preferably such that circular or elliptical micropores occupy 50% or more of all the micropores. More specifically, it is an ellipse having a ratio of major axis to minor axis of 1.0 to 3.8, preferably 1.0 to 3.0, and major axis of 180 μm or less, preferably 10 μm to 100 μm. Those having substantially spherical pores in the following range are preferable.

The smaller the thickness of the microporous membrane is, the more the flexibility is increased, which is desirable, but from the viewpoint of adhesion, a thickness of 0.1 mm or more is preferable. On the other hand, when it exceeds 10.5 mm, flexibility and fastening property are deteriorated, which is not preferable. Since the larger the number of micropores, the better the fastening force, the density is preferably 0.6 g / cm ³ or less. If it exceeds 0.6 g / cm ³ , the fastening force is lowered and it becomes unpractical, which is not preferable. On the other hand, when the number of micropores is extremely large, the strength of the microporous membrane is lowered and the durability is deteriorated. Therefore, the density is preferably 0.01 g / cm ³ or more. It is more preferably 0.1 g / cm ³ or more and 0.5 g / cm ³ or less. Further, it is preferable that the micropores in the surface layer of the microporous membrane are opened, and the ratio of the area of the opened portion to the surface of the microporous membrane is 20% or more from the viewpoint of improving the fastening force. .

The microporous membrane of the present invention can be formed by directly applying a microporous membrane-forming resin to a support, or by forming a microporous membrane in advance and then laminating it on the support. It can be obtained by a method such as sticking. The microporous membrane may be coated or adhered on the entire surface of the support, but it may be partial such as ribbon-like or island-like.

Further, in the present invention, the fastening force of the microporous membrane is preferably 5 g / cm ² or more from the viewpoint of practicality. The fastening force referred to here means that measured by the following method. A sample of 2 cm x 10 cm is taken, and a loop made of thread and having a length of 4 cm is attached to the central portion 1 cm from one end in the length direction. This was stacked on a flat test plate (polyacrylic plate, thickness: 3 mm, surface irregularity difference: 3 μ or less) having a size of 50 cm × 125 cm and pressure-bonded, and a load of 0.4 kg / cm ² was placed for 10 minutes. It was left unloaded for 10 minutes. Next, pull the above loop thread with a spring measure and measure the force (maximum value) when the sample peels from the flat test plate to determine the smooth fastening force.

Next, the smooth surface layer in the present invention means a tape-like material having excellent peelability and having at least one surface that is smooth. Examples of the tape-like material include cloth, paper, stainless steel, aluminum foil, natural rubber, synthetic resin film, slit cloth and the like. Synthetic resin films are made of thermoplastics such as polyolefin (polyethylene, polypropylene, etc.), polyurethane, polyamide, polyester, polyvinyl chloride, polyvinylidene chloride, silicone, etc., alone or in combination with various woven or non-woven fabrics. Can be used. Of these, polyolefin-based films are particularly preferable from the viewpoints of easy hand tearing, light weight, easy production, and low cost.

Further, in order to control hand-cutting property, flexibility, fastening force, etc., a sheet-shaped material may be perforated. Perforation is performed by a method such as needling with a needle or rod heated at room temperature or above the softening point of the sheet, punching perforation by an appropriate method, heating embossing a network pattern, or performing perforation processing. be able to.

The difference in surface roughness on at least one surface of the smooth surface layer is preferably 25 μm or less, and more preferably 20 μm or less. The fastening force tends to decrease as the difference in the unevenness increases, and the fastening force can be arbitrarily changed by changing the difference in the unevenness. In addition, if the smooth surface does not have good releasability, it may stick to the microporous membrane of the other party to be fixed and cannot be peeled off, and may damage the microporous membrane, which is not preferable.

Next, a method of using the binding tape of the present invention will be described. For example, wrap what you want to bind with the binding tape of the present invention, peel off the smooth surface layer at one end to be joined to expose the viscoelastic microporous membrane layer, and abut and secure it to the other smooth surface layer (see Fig. 3). ) Or, for example, when a synthetic resin film is used for both the tape-shaped base material and the smooth surface layer, one smooth surface layer is peeled off and fixed to the back surface of the other smooth tape-shaped base material (Fig. 4) to bind them together. When the tape-shaped base material is a knitted fabric, it can be bound in the same manner by bonding a synthetic resin film having a smooth surface to the back surface thereof. Since the viscoelastic microporous membrane layer and the smooth surface layer can be repeatedly joined, fixed and separated, the binding can be easily released, and the viscoelastic microporous membrane layer and the smooth surface layer can be reused.

In any case, the viscoelastic microporous membrane layer does not adhere to the object to be bound by leaving the smooth surface layer of the portion contacting the object to be bound without peeling off. Furthermore, since the viscoelastic microporous membrane layer according to the present invention is bonded and fixed to the smooth surface layer by the suction effect of the microporous layer, it is not necessary to use a conventional adhesive / adhesive, and an adhesive or the like can be attached to the object to be bound. There is no such thing as sticking. On the other hand, the viscoelastic microporous membrane layer is protected by the smooth surface layer and does not change, so that this portion can be reused after unbinding. It is preferable that the smooth surface layer has perforations or notched grooves in the width direction of the tape because the smooth surface layer can be easily peeled off when binding. The perforation or notch groove should be spaced according to the circumference of the bundle and the length of the binding and fastening surface of the binding tape, or a relatively short gap, for example, a few cm. It is preferable to provide a large number of perforations or notches so that the sheet can be peeled off only at the required points during use.

[0024]

【Example】

 Next, the present invention will be described in more detail based on embodiments.

Example 1 100 parts by weight of polyester-based polyurethane (solid content 50%) was mixed with 10 parts by weight of a fatty acid salt-based activator as a foaming agent and 3 parts by weight of a water-soluble epoxy as a cross-linking agent, and the mixture was obtained. Was mechanically foamed with a foaming machine, and then heat-treated at 123 ° C for 16 minutes → 165 ° C for 8 minutes to obtain viscoelasticity with a foaming ratio of 2.9 and a coating thickness of 1.5 mm. A plain woven cloth having a microporous membrane adhered thereto was obtained. The open area of the entire microporous film was 35% and the density was 0.27 g / cm ³ . The maximum diameter of the micropores was 30 to 80 μm, and the fastening force was 13 g / cm ² . Further, the dynamic properties of the constituent materials of the microporous membrane are as follows: dynamic elastic modulus (log ₁₀ E ') in the rubber region is 8.6 dyne / cm ² , peak value of tan δ is 0.69, dynamic loss E The peak temperature of ″ was -25 ° C. Next, using a 12 μm-thick polyethylene film with perforations at intervals of 2 to 3 cm (surface unevenness difference of 1.6 μm) as the smooth surface layer, the above-mentioned microporous layer was used. A plain woven fabric having a porous membrane adhered thereto was laminated on the surface of a microporous membrane, which was wrapped around a paper core 6 with a smooth surface layer 3 inside as shown in FIG. Using this tying tape, the vegetables were tied together using the tying tape as shown in Fig. 3, and then the tying was released, and no adhesive or the like was attached to the vegetables and no scratches were attached. The tape could be bundled and unbundled repeatedly and reused. The dirty Succoth was also no.

Example 2 A polyester film having a thickness of 35 μm was used as a tape-shaped substrate, and the compounded resin containing the polyester-based polyurethane as a main component used in Example 1 was applied thereon and heat-treated to obtain a foaming ratio. A polyester film having a microporous film having a viscoelasticity of 2.7 times and a coating film thickness of 1.3 mm was attached was obtained. Next, a 15 μm-thick polyethylene film having perforations at 2 cm intervals was laminated on the microporous membrane. This product was slit into a width of 5 cm, and as shown in FIG. 1, a wound body of a binding tape was obtained by winding a polyethylene film on a paper core 6 inside. As shown in Fig. 4, using this tying tape, 10 hollow aluminum pipes with a diameter of 3 mm were bundled, and when the bundle was unwound, no adhesive was attached to the sides of the hollow pipe, and no scratches were formed. Did not attach. Furthermore, the above binding tape was able to be repeatedly bound and unbundled and reused.

[0027]

[Effect of device]

 The binding tape of the present invention has the viscoelastic microporous membrane and the member having the smooth surface as the constituent components, and therefore has the following excellent effects.

(A) Since the binding tape of the present invention is bonded / fixed to the smooth surface layer by the microporous suction cup action of the viscoelastic microporous membrane layer, it can be easily bonded / fixed / peeled. Yes, it can be bundled and untied repeatedly and can be reused.

(B) Further, since the conventional joining is not performed by using an adhesive / adhesive, an object such as an adhesive does not adhere to the object to be bound, and the object to be bound at the time of peeling the adhesive It does not damage the

(C) At the time of bundling, the bundling tape is cut into a required length, the smooth surface layer is peeled off only at the both ends or one end of the bundling tape, and the viscoelastic microporous membrane layer is exposed and joined, whereby all kinds of The object to be bound can be bound without attaching the viscoelastic microporous membrane layer, and there is no contamination or damage by the viscoelastic microporous membrane layer when the binding is released.

Further, the portion protected by the smooth surface layer can be repeatedly fixed and peeled and can be reused.

(D) In the tape-shaped substrate used for the binding tape of the present invention, the back surface of the tape (adhesive which is conventionally required) is adhered to so that the adhesive layer does not adhere to it unlike the conventional adhesive tape. The manufacturing cost is low because a high degree of demolding treatment is not required for the non-coated surface.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a binding tape according to the present invention. ◎

FIG. 2 is a perspective view showing an example of a use mode of the binding tape according to the present invention. ◎

FIG. 3 is a partial front view showing an example of a binding mode of the binding tape according to the present invention.

FIG. 4 is a partial front view showing an example of another binding mode of the binding tape according to the present invention.

[Explanation of symbols]

 1: Tape-shaped substrate 2: Viscoelastic microporous membrane layer 3: Smooth surface layer 4: Perforation 5: Bundling tape 6: Paper core 7: Bundling object

Claims (5)

[Scope of utility model registration request] 1. A tying tape comprising a core material and a laminate of a tape-shaped substrate, a viscoelastic microporous membrane layer and a smooth surface layer. 2. The tying tape according to claim 1, wherein the smooth surface layer has perforations or notches in the width direction. 3. The binding tape according to claim 1, wherein the surface irregularity difference of the smooth surface layer is 25 μm or less. 4. A viscoelastic microporous membrane having a dynamic loss E ″ peak temperature of −50 ° C. or higher and −10 ° C. or lower, and a loss normal cut (tan).
A resin having a peak value of δ) of 0.8 or less and a dynamic viscoelasticity (log ₁₀ E ') in the rubber region of 9.0 dyne / cm ² or less, wherein the resin is a resin.
The binding tape described. 5. A viscoelastic microporous membrane containing pores having a maximum diameter of 3 μm or more and 250 μm or less, a thickness of 0.1 mm or more and 10.5 mm or less, and a density of 0.01 g / cm ³ or more and 0.1.
6 g / cm ³ or less, and micropores in the surface layer of the viscoelastic microporous membrane are opened, and the ratio of the area of the opened portion to the surface of the viscoelastic microporous membrane is 20%. It is above, The binding tape of Claim 1, 2, 3 or 4 characterized by the above-mentioned.