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Novel PET (polyethylene terephthalate) strap with multi-layer structure

A technology of plastic-steel packing belt and multi-layer structure, which is applied in the field of packaging materials, can solve the problems of insufficient tensile strength, insufficient breaking strength and elongation at break, hard hair and fried bags, etc., and achieve good antistatic performance and heat shrinkage The effect of small resistance and good wear resistance

Inactive Publication Date: 2016-08-24
铜陵永泰包装材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the belt body of the PET packing belt is a single-layer structure, and this layer is widely used for direct extrusion molding of PET raw materials or PET recycled materials. This kind of single-layer structure PET packing belt generally has insufficient tensile strength, low breaking strength and The elongation at break is not enough, the welding point of the joint is not strong, and the phenomenon of bursting and swelling occurs when packaging items.
At the same time, this kind of packing belt is easy to rub and generate sparks, and because it is easy to generate static electricity, the packaging effect of electronic products is not good, especially for high-precision instruments. It will have an irreversible impact and affect its use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1, a new type of PET plastic-steel packing belt with a multilayer structure, which includes a PET polyester layer, a PETN polyester layer, a PET modified layer and a PET film from the outside to the inside; the PET polyester layer includes a PET polyester layer Surface layer, BOPET transparent film, adhesion promotion layer and adhesive layer, the PET polyester surface layer adopts the polyester with melting point of 160~220°C and intrinsic viscosity of 0.65~0.75dL / g; the PETN polyester layer is made of PET and PETN melt extrusion, wherein the quality of PET is 80%, and the quality of PEN is 20%; The modified PET layer includes an adhesion promotion layer and a modified layer, and the modified layer is blended by PET, ECDP and PEG wherein the quality of PET is 90%, the quality of ECDP is 5%, and the quality of PEG is 5%; the surface layer of the PET sticking film is connected with a glue layer; the glue layer of the PET polyester layer and the PETN polyester l...

Embodiment 2

[0010] Embodiment 2, a new type of PET plastic-steel strapping belt with a multilayer structure, which includes a PET polyester layer, a PETN polyester layer, a PET modified layer and a PET film from the outside to the inside; the PET polyester layer includes a PET polyester layer. Surface layer, BOPET transparent film, adhesion promotion layer and adhesive layer, the PET polyester surface layer adopts the polyester with melting point of 160~220°C and intrinsic viscosity of 0.65~0.75dL / g; the PETN polyester layer is made of PET and PETN melt extrusion, wherein the quality of PET is 60%, and the quality of PEN is 40%; the modified PET layer includes an adhesion promotion layer and a modified layer, and the modified layer is blended by PET, ECDP and PEG wherein the quality of PET is 85%, the quality of ECDP is 8%, and the quality of PEG is 7%; the surface layer of the PET sticking film is connected with a glue layer; the glue layer of the PET polyester layer and the PETN polyeste...

Embodiment 3

[0011] Embodiment 3, a new type of PET plastic-steel packing belt with a multi-layer structure, which sequentially includes a PET polyester layer, a PETN polyester layer, a PET modified layer and a PET film from the outside to the inside; the PET polyester layer includes a PET polyester layer Surface layer, BOPET transparent film, adhesion promotion layer and adhesive layer, the PET polyester surface layer adopts the polyester with melting point of 160~220°C and intrinsic viscosity of 0.65~0.75dL / g; the PETN polyester layer is made of PET and PETN melt extrusion, wherein the quality of PET is 70%, and the quality of PEN is 50%; the PET modified layer includes an adhesion promotion layer and a modified layer, and the modified layer is blended by PET, ECDP and PEG Formed, wherein the quality of PET is 89%, the quality of ECDP is 7%, the quality of PEG is 4%; The surface layer of described PET sticking film is connected with adhesive layer; The adhesive layer of described PET poly...

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Abstract

The invention discloses a novel PET (polyethylene terephthalate) strap with a multi-layer structure. The novel PET strap comprises a PET polyester layer, a PETN (pentaerythritol tetranitrate) polyester layer, a PET modified layer and a PET film sequentially from outside to inside. The novel PET strap has excellent wear resistance, folding resistance, pinhole resistance, tear resistance and the like; the heat shrinkage is quite low and is only 1.25% after the strap is placed at the temperature lower than 120 DEG C for 15 min; the PET strap has good antistatic property. The novel PET strap with the structure has very high toughness, high wear resistance and good antistatic property, can still guarantee work in a complex environment and is particularly suitable for packaging products such as electronic products, high precision instruments and the like.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a novel PET plastic-steel packing belt with a multilayer structure. Background technique [0002] PET (polyethylene terephthalate) is a linear thermoplastic resin and one of the most widely used engineering plastics. Its density is (1.3~1.4) g / cm 3 , the intrinsic viscosity (IV) is (0.62-1.20) ml / g, and the melting point is (245-265) °C. PET plastic is transparent, high gloss, has good weather resistance and chemical stability, impact resistance, creep resistance and dimensional stability; it has high heat resistance and can be used in a wide temperature range, It maintains excellent physical and mechanical properties and is a high-value resin. PET can be processed into products by various plastic molding processes. Extruded PET sheets, tapes, and tubes can be stretched biaxially or uniaxially at a temperature of (80°C to 100°C) to significantly improve their mech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/36
CPCB32B27/08B32B27/36B32B2250/244B32B2307/21B32B2307/554B32B2307/558B32B2553/00
Inventor 王卫民高玲
Owner 铜陵永泰包装材料科技有限公司
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