Bearing adhesive tape and preparation method thereof

Abstract

The invention relates to a bearing adhesive tape which comprises an acrylic acid modified hot-melt pressure-sensitive adhesive layer and an unilateral stretching film layer, which are fixedly connected with each other; the bearing adhesive tape is high in tensile strength, and low in elongation, can bear a heaviest weight of 10 kg / cm<2>, is high in bearing performance, and low in hardness, cannot cut operators, is low in requirements on used ambient temperature, can be used at the temperature of -20-40 DEG C, and is convenient to use; the acrylic acid modified hot-melt pressure-sensitive adhesive layer is high in cohesion, adhesion force, ageing resistance, and adhesive force on a substrate, has an excellent adhesion stress on polar materials and non-polar materials, is wide in application range, contains no solvent, has no pollution to an environment, does not need to be used with a tackifying primer, is convenient to use, and reduces the use cost. A preparation method of the bearing adhesive tape is simple in process, easy to operate, high in production efficiency, high in coating precision, and high in qualified rate, and can be used for producing adhesive tapes with any widths and any lengths.

Description

technical field [0001] The invention relates to the technical field of adhesive tapes, in particular to a load-bearing adhesive tape and a preparation method thereof. Background technique [0002] Load-bearing tape is a type of tape that is attached to an object and used as a handle. [0003] As a new type of tape, load-bearing tape has been widely concerned in various packaging and transportation industries. At present, the base materials used in domestically produced tapes are mostly ordinary BOPP, PE, PET, and PVC. These tapes have low tensile strength and low elongation. Tall, not suitable for bearing heavier substances. Although the tape made of PET film with a very thick base material can meet the requirements of load-bearing tape, its hardness is high and it is easy to cut the operator, so its application is also limited accordingly. Existing adhesive tapes have higher requirements on ambient temperature, and cannot be used below 0°C, which is inconvenient to use. ...

AI Technical Summary

Problems solved by technology

[0003] As a new type of tape, load-bearing tape has been widely concerned in various packaging and transportation industries. At present, the base materials used in domestically produced tapes are mostly ordinary BOPP, PE, PET, and PVC. These tapes have low tensile strength and low elongation. Tall, not suitable for bearing heavier substances

Although the tape made of PET film with a very thick substrate can meet the requirements of load-bearing tape, its hardness is high and it is easy to cut the operator, so its application is also limited accordingly.

Existing adhesive tapes have higher requirements on the operating environment temperature and cannot be used below 0°C, which is inconvenient to use

[0004] In addition, most of the existing hot-melt pressure-sensitive adhesive tapes have low cohesion, low cohesive force, poor aging resistance, and poor adhesion to PP and PET substrates.

Existing acrylic adhesive tapes have high polarity, poor adhesion to non-polar materials such as PP, and narrow application range; most of the adhesives used in existing adhesive tapes are solvent-based adhesives, containing toluene, etc. The solvent is not recovered during coating, and it is directly discharged into the atmosphere, causing great environmental pollution; the existing rubber-type hot-melt adhesive needs to be used in conjunction with a tackifying primer to enhance its adhesion on the substrate. Adhesive force, troublesome to use, and increase the cost of use

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